Inverter power supply

Abstract

The application relates to the technical field of power supply equipment, and discloses an inverter power supply, which comprises a shell body, a power distribution unit arranged in the interior of the shell body, the power distribution unit being provided with an input terminal used for accessing first alternating current, the power distribution unit further comprising a rectifier bridge electrically connected with the input terminal, the rectifier bridge being used for converting the first alternating current into direct current, an inverter unit arranged in the interior of the shell body, the inverter unit comprising a busbar capacitor plate, the busbar capacitor plate being electrically connected with the rectifier bridge, the busbar capacitor plate being connected with an IGBT module, the IGBT module being connected with an output terminal, and a control unit arranged in the interior of the shell body, the control unit being connected with the IGBT module, the control unit being used for controlling the IGBT module so that the IGBT module converts the direct current into second alternating current, and the second alternating current is output through the output terminal. The inverter power supply provided by the application can control the parameters of output current more accurately.

Description

Technical Field

[0001] This application relates to the field of power supply equipment technology, and more particularly to an inverter power supply. Background Technology

[0002] An inverter is a power electronic device that can convert direct current (DC) to alternating current (AC). Its core function is to convert DC to AC energy to meet the needs of loads that require AC power (such as motors, home appliances, and industrial equipment).

[0003] In related technologies, traditional inverter power supplies cannot accurately control the parameters of the output current (such as voltage, frequency, and waveform) to adapt to the diverse and demanding load requirements in industrial scenarios. Utility Model Content

[0004] This application provides an inverter power supply that can control the parameters of the output current with relatively precise control.

[0005] This application provides an inverter power supply, including:

[0006] outer shell;

[0007] A power distribution unit is disposed inside the housing. The power distribution unit has an input terminal for connecting a first alternating current (AC) power. The power distribution unit also includes a rectifier bridge electrically connected to the input terminal for converting the first AC power into direct current (DC).

[0008] An inverter unit is disposed inside the housing. The inverter unit includes a busbar capacitor board electrically connected to the rectifier bridge. An IGBT module is connected to the busbar capacitor board, and the IGBT module is connected to an output terminal.

[0009] A control unit is disposed inside the housing and is connected to the IGBT module. The control unit is used to control the IGBT module so that the IGBT module converts the DC power into a second AC power, which is output through the output terminal.

[0010] In some embodiments, the housing has a first cavity and a second cavity, with the power distribution unit and the inverter unit respectively disposed inside the first cavity and the second cavity.

[0011] In some embodiments, the control unit includes a control board and an inner housing, with at least a portion of the control board disposed inside the inner housing, which is disposed inside the outer housing.

[0012] In some embodiments, the inverter unit and the inner housing are arranged sequentially with the power distribution unit along a first direction, and the inverter unit and the inner housing are arranged sequentially along a second direction, which is perpendicular to the first direction.

[0013] In some embodiments, the power distribution unit further includes a filter electrically connected to the rectifier bridge, the filter including the input terminal.

[0014] In some embodiments, the power distribution unit further includes a contactor and a soft starter module, the filter, the contactor and the rectifier bridge are electrically connected in sequence, and the contactor is electrically connected to the control unit through the soft starter module.

[0015] In some embodiments, the power distribution unit further includes a circuit breaker, through which the filter is electrically connected to the contactor.

[0016] In some embodiments, a fuse is installed between the filter and the circuit breaker.

[0017] In some embodiments, the IGBT module includes multiple IGBT devices; the inverter power supply also includes a heat dissipation unit, which includes a heat sink plate, and the heat sink plate has a heat dissipation pipe inside. The heat dissipation pipe has a liquid inlet and a liquid outlet. The IGBT devices are connected to the heat sink plate, and the multiple IGBT devices are arranged sequentially along the extension direction of the heat dissipation pipe.

[0018] In some embodiments, the plurality of IGBT devices include a first device and a second device, wherein the distance between the first device and the liquid outlet in the extension direction of the heat dissipation pipe is less than the distance between the second device and the liquid outlet in the extension direction of the heat dissipation pipe; the heat dissipation unit further includes a heat-conducting element connected to the heat sink plate, and the heat-conducting element extends along the arrangement direction of the first device and the second device.

[0019] The inverter power supply provided in this application embodiment has at least the following beneficial effects:

[0020] Because the power distribution unit has input terminals for connecting to a first AC power source, and also includes a rectifier bridge electrically connected to the input terminals, and an inverter unit located inside the housing, the inverter unit includes a busbar capacitor board electrically connected to the rectifier bridge, an IGBT module connected to the busbar capacitor board, and an output terminal connected to the IGBT module. The control unit is also located inside the housing and connected to the IGBT module. Therefore, the first AC power connected to the input terminals can be converted to stable DC power via the rectifier bridge, avoiding the influence of fluctuations in the first AC power. Then, the control unit controls the IGBT module to convert the DC power to a second AC power source, thereby enabling more precise control of the parameters of the second AC power source and flexible adjustment of these parameters. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the inverter power supply structure in one embodiment of this application;

[0023] Figure 2 yes Figure 1 The diagram shows the internal structure of the inverter power supply.

[0024] Figure 3 yes Figure 2 The diagram shows the structural schematics of the outer casing, power distribution unit, and inverter unit in the inverter power supply.

[0025] Figure 4 yes Figure 3 Another structural schematic diagram of the outer casing, power distribution unit, and inverter unit shown;

[0026] Figure 5 yes Figure 3 Another structural schematic diagram of the outer casing, power distribution unit, and inverter unit shown;

[0027] Figure 6 yes Figure 2 A top view of the casing, power distribution unit, and inverter unit in the inverter power supply shown.

[0028] Figure 7 yes Figure 6 The diagram shows a top view of the inverter power supply's housing, power distribution unit, IGBT modules within the inverter unit, and heat dissipation unit.

[0029] Figure 8 yes Figure 7 The diagram shows a top view of the inverter power supply's casing, power distribution unit, and heat dissipation unit.

[0030] The markings in the diagram mean:

[0031] 100. Inverter power supply;

[0032] 10. Outer shell;

[0033] 101. First cavity; 102. Second cavity;

[0034] 20. Power distribution unit;

[0035] 201. Input terminals;

[0036] 21. DC power supply; 22. Filter; 221. Fuse; 23. Contactor; 24. Soft starter module; 25. Circuit breaker; 26. First copper busbar; 27. Second copper busbar; 28. Third copper busbar; 29. ​​Fourth copper busbar;

[0037] 301. Output terminals;

[0038] 30. Busbar capacitor board; 31. IGBT device; 32. Fifth copper busbar;

[0039] 40. Control unit;

[0040] 41. Control board; 42. Inner housing; 43. First drive board; 44. Second drive board;

[0041] 50. Heat dissipation unit;

[0042] 51. Heat sink; 52. Heat dissipation piping; 521. Liquid inlet; 522. Liquid outlet; 53. Thermal conductive component. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0044] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0045] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0046] In this specification, references to "one embodiment," "some embodiments," or simply "embodiment" mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. Furthermore, in one or more embodiments, specific features, structures, or characteristics may be combined in any suitable manner.

[0047] To illustrate the technical solution of this application, the following description is provided in conjunction with specific accompanying drawings and embodiments.

[0048] An inverter is a power electronic device that can convert direct current (DC) to alternating current (AC). Its core function is to convert DC to AC energy to meet the needs of loads that require AC power (such as motors, home appliances, and industrial equipment).

[0049] In related technologies, traditional inverter power supplies cannot accurately control the parameters of the output current (such as voltage, frequency, and waveform) to adapt to the diverse and demanding load requirements in industrial scenarios.

[0050] Therefore, embodiments of this application provide an inverter power supply, including a housing, a power distribution unit, an inverter unit, and a control unit.

[0051] The power distribution unit (PDU) is located inside the housing. The power distribution unit has input terminals for connecting a first AC power source. The power distribution unit also includes a rectifier bridge electrically connected to the input terminals for converting the first AC power source into DC power.

[0052] The inverter unit (INU) is located inside the housing. The inverter unit includes a busbar capacitor board, which is electrically connected to the rectifier bridge. The busbar capacitor board is connected to an IGBT module, which is connected to the output terminal.

[0053] The control unit (CIU, Control and Interface Unit) is located inside the housing. The control unit is connected to the IGBT module and is used to control the IGBT module so that the IGBT module converts DC power into a second AC power, which is then output through the output terminal.

[0054] The inverter power supply provided in this application embodiment has an input terminal for the power distribution unit to connect to a first AC power source. The power distribution unit also includes a rectifier bridge electrically connected to the input terminal. The inverter unit is located inside the housing and includes a busbar capacitor board electrically connected to the rectifier bridge. An IGBT module is connected to the busbar capacitor board, and the IGBT module is connected to an output terminal. The control unit is located inside the housing and connected to the IGBT module. Therefore, the first AC power connected to the input terminal can be converted into a stable DC power source first through the rectifier bridge, avoiding the influence of fluctuations in the first AC power source. Then, the control unit controls the IGBT module to convert the DC power source into a second AC power source, thereby enabling more precise control of the parameters of the second AC power source and flexible adjustment of the parameters of the second AC power source.

[0055] Please refer to Figures 1 to 5 , Figure 1 This is a schematic diagram of the inverter power supply 100 in one embodiment of this application. Figure 2 yes Figure 1 The diagram shows the internal structure of the inverter power supply 100. Figure 3 yes Figure 2 The schematic diagram shown illustrates the structure of the housing 10, power distribution unit 20, and inverter unit in the inverter power supply 100. Figure 4 yes Figure 3 The diagram shows another view of the structure of the outer casing 10, the power distribution unit 20, and the inverter unit. Figure 5 yes Figure 3 Another structural schematic diagram of the outer casing 10, power distribution unit 20, and inverter unit shown.

[0056] This application provides an inverter power supply 100, including a housing 10, a power distribution unit 20, an inverter unit, and a control unit 40.

[0057] The power distribution unit 20 is disposed inside the housing 10. The power distribution unit 20 has an input terminal 201 for connecting a first AC power. The power distribution unit 20 also includes a rectifier bridge electrically connected to the input terminal 201 for converting the first AC power into DC power.

[0058] A rectifier bridge is a power electronic component consisting of multiple diodes connected in a specific manner. The rectifier bridge can be integrated into a DC power supply 21. The first AC power supply can be three-phase, such as 360V AC or 480V AC.

[0059] The inverter unit is located inside the housing 10. The inverter unit includes a busbar capacitor board 30, which is electrically connected to the rectifier bridge. An IGBT module is connected to the busbar capacitor board 30, and the IGBT module is connected to the output terminal 301.

[0060] The busbar capacitor board 30 can be composed of conductive busbars (usually copper busbars with strong current carrying capacity) and high-voltage capacitors (mostly electrolytic capacitors or film capacitors). The high-voltage capacitors are directly soldered or fixed to the conductive busbars, forming a modular circuit board assembly. The IGBT module can include multiple IGBT (Insulated Gate Bipolar Transistor) devices, enabling high-frequency, high-current control of power supply switching.

[0061] The control unit 40 is located inside the housing 10. The control unit 40 is connected to the IGBT module and is used to control the IGBT module so that the IGBT module converts DC power into a second AC power, which is output through the output terminal 301.

[0062] The control unit 40 can be responsible for coordinating the operation of various functional modules of the inverter power supply 100, realizing intelligent management and external interaction of the inverter power supply 100. The control unit 40 may include driver chips, etc.

[0063] As can be seen from the above, the inverter power supply 100 provided in this application embodiment has an input terminal 201 in the power distribution unit 20, which is used to connect to the first AC power. The input terminal 201 is used to connect to the first AC power. The power distribution unit 20 also includes a rectifier bridge electrically connected to the input terminal 201. The inverter unit is located inside the housing 10 and includes a busbar capacitor board 30. The busbar capacitor board 30 is electrically connected to the rectifier bridge. The busbar capacitor board 30 is connected to an IGBT module. The IGBT module is connected to an output terminal 301. The control unit 40 is located inside the housing 10 and is connected to the IGBT module. Therefore, the first AC power connected to the input terminal 201 can be converted into a stable DC power through the rectifier bridge to avoid the influence of fluctuations in the first AC power. Then, the control unit 40 controls the IGBT module so that the IGBT module converts the DC power into the second AC power. This allows for more precise control of the parameters of the second AC power and flexible adjustment of the parameters of the second AC power.

[0064] Please refer to Figure 2 and Figure 3In some embodiments, the housing 10 has a first cavity 101 and a second cavity 102, and the power distribution unit 20 and the inverter unit are respectively disposed inside the first cavity 101 and the second cavity 102.

[0065] By adopting the above scheme, the power distribution unit 20 and the inverter unit can be separated, avoiding interference from the high voltage of the inverter unit to the low voltage in the power distribution unit 20, so as to ensure the stable and reliable operation of the equipment.

[0066] It is understandable that the first cavity 101 and the second cavity 102 can be separated by a partition.

[0067] Optionally, the control unit 40 includes a control board 41 and an inner housing 42, with at least a portion of the control board 41 disposed inside the inner housing 42, which is disposed inside the outer housing 10.

[0068] This configuration separates the control unit 40 from the inverter unit, preventing the high voltage of the inverter unit from interfering with the low voltage in the control unit 40, thus ensuring stable and reliable operation of the equipment.

[0069] It is understood that both the inner housing 42 and the inverter unit can be located inside the second cavity 102. The control board 41 can be connected to the IGBT module via the drive board.

[0070] As one possible implementation, the inverter unit and the inner casing 42 are arranged sequentially with the power distribution unit 20 along a first direction, and the inverter unit and the inner casing 42 are arranged sequentially along a second direction, which is perpendicular to the first direction. The first direction can be... Figure 2 and Figure 3 The direction indicated by the middle arrow M can be either the width direction of the outer shell 10 or a second direction. Figure 2 and Figure 3 The direction indicated by the middle arrow N can be the height direction of the outer shell 10.

[0071] By adopting the above scheme, the power distribution unit 20, the inverter unit and the control unit 40 can be separated, while the structure of the power distribution unit 20, the inverter unit and the control unit 40 can be made more compact, thereby reducing the size of the inverter unit.

[0072] Please refer to Figures 1 to 5 In some embodiments, the power distribution unit 20 further includes a filter 22 electrically connected to the rectifier bridge, and the filter 22 includes an input terminal 201.

[0073] By adopting the above scheme, the filter 22 can be used to remove the interference of the first AC power to the DC power, making the DC power more stable. Furthermore, by integrating the input terminal 201 with the filter 22, assembly space can be greatly saved.

[0074] Optionally, the power distribution unit 20 also includes a contactor 23 and a soft starter module 24. The filter 22, contactor 23 and rectifier bridge are electrically connected in sequence, and the contactor 23 is electrically connected to the control unit 40 through the soft starter module 24.

[0075] This configuration allows the DC voltage of the input inverter unit to rise slowly, thereby preventing the power distribution unit 20 from experiencing excessively high instantaneous voltage that could damage the inverter unit and protect the back-end circuitry.

[0076] Optionally, the power distribution unit 20 also includes a circuit breaker 25, through which the filter 22 is electrically connected to the contactor 23.

[0077] With this setup, circuit breaker 25 can provide safety protection.

[0078] Optionally, a fuse 221 is installed between the filter 22 and the circuit breaker 25.

[0079] This configuration allows the entire output of the inverter 100 to be disconnected by the fuse 221 when the inverter 100 experiences an overcurrent, preventing damage to the load of the inverter 100 and improving system reliability.

[0080] As one possible implementation, the first AC power is a 480V three-phase power supply. The three-phase power is transmitted to the filter 22 through the input terminal 201. After filtering, the voltage and current are transmitted to the circuit breaker 25 via the first copper busbar 26. The circuit breaker 25 is connected to the contactor 23 via the second copper busbar 27. The contactor 23 is connected to the rectifier bridge via the third copper busbar 28. The DC power rectified by the rectifier bridge is transmitted to the busbar capacitor board 30 of the inverter unit via the fourth copper busbar 29. The various components of the power distribution unit 20 are arranged in a reasonable manner according to the current flow, saving assembly space.

[0081] The busbar capacitor board 30 is installed above the IGBT module. Meanwhile, the IGBT module is connected to the control board 41 of the control unit 40 through the driver board. The control board 41 controls the IGBT module to turn on and off through the control driver board. Finally, the inverter bridge composed of IGBT modules connects the DC voltage and current to the output terminal 301 through the fifth copper busbar 32 and converts it into the second AC voltage and current before outputting it.

[0082] The inverter power supply 100 provided in this application embodiment can integrate the power distribution unit 20, the inverter unit and the control unit 40 together within a limited volume through a rational structural layout, and output controllable voltage and current, with a maximum output power of up to 25kW to meet the back-end load requirements.

[0083] In order to output controllable voltage and current, the IGBT device 31 of the IGBT module generates a lot of heat during operation. If this heat is not dealt with, it is difficult to ensure that the entire inverter power supply 100 can work stably and reliably.

[0084] To solve the above problems, please refer to Figure 1 , Figure 2 as well as Figures 6 to 8 , Figure 6 yes Figure 2 The diagram shows a top view of the housing 10, power distribution unit 20, and inverter unit in the inverter power supply 100. Figure 7 yes Figure 6 The diagram shows a top view of the inverter power supply 100, including the housing 10, power distribution unit 20, IGBT module in the inverter unit, and heat dissipation unit 50. Figure 8 yes Figure 7 The top view of the inverter power supply 100, including the housing 10, power distribution unit 20, and heat dissipation unit 50.

[0085] In some embodiments, the IGBT module includes multiple IGBT devices 31; the inverter power supply 100 also includes a heat dissipation unit 50, which includes a heat sink 51. The heat sink 51 has a heat dissipation pipe 52 inside, which has an inlet 521 and an outlet 522. The IGBT devices 31 are connected to the heat sink 51, and the multiple IGBT devices 31 are arranged sequentially along the extension direction of the heat dissipation pipe 52.

[0086] By adopting the above scheme, the heat of multiple IGBT devices 31 can be carried away by the coolant introduced through the inlet 521 and discharged through the outlet 522. It has strong heat dissipation capacity, low noise, and stable operation, thereby ensuring that the entire inverter can work stably and reliably and achieve a large power density.

[0087] It should be noted that the coolant can be water or similar. The heat sink 51 can be an aluminum heat sink, and the heat pipes 52 can be copper heat pipes. The copper heat pipes and the aluminum heat sink are pressed together to form a complete liquid-cooled heat sink. Lower-temperature coolant enters the copper heat pipes through the inlet 521, while higher-temperature coolant flows out through the outlet 522. The IGBT module is fixed to the liquid-cooled heat sink, and the heat it generates is transferred to the copper heat pipes, which then transfer the heat to the coolant and carry it away.

[0088] It is understandable that the multiple IGBT devices 31 can be divided into two groups. One group of IGBT devices 31 is connected to the control board 41 through the first driver board 43, and the other group of IGBT devices 31 is connected to the control board 41 through the second driver board 44.

[0089] Since multiple IGBT devices 31 are arranged sequentially along the extension direction of the heat dissipation pipe 52, the multiple IGBT devices 31 are equivalent to being connected in series along the extension direction of the heat dissipation pipe 52. The coolant in the heat dissipation pipe 52 is heated once every time it passes through an IGBT device 31. Therefore, the temperature of the coolant in the heat dissipation pipe 52 will become higher and higher. This results in the heat dissipation effect of IGBT devices 31 that are closer to the outlet 522 in the extension direction of the heat dissipation pipe 52 being less effective than that of IGBT devices 31 that are farther away from the outlet 522 in the extension direction of the heat dissipation pipe 52, thereby affecting the performance and lifespan of some IGBT devices 30.

[0090] To address the aforementioned issues, optionally, the plurality of IGBT devices 31 include a first device and a second device, wherein the distance between the first device and the liquid outlet 522 in the extension direction of the heat dissipation pipe 52 is less than the distance between the second device and the liquid outlet 522 in the extension direction of the heat dissipation pipe 52; the heat dissipation unit 50 further includes a heat-conducting element 53, which is connected to the heat sink 51 and extends along the arrangement direction of the first device and the second device.

[0091] By adopting the above scheme, the heat of the first device which is closer to the liquid outlet 522 can be conducted to the second device which is farther from the liquid outlet 522 through the heat conduction component 53, thereby ensuring that the temperature of the entire heat sink 51 is relatively uniform, and finally achieving relatively uniform temperature of all IGBT devices 31.

[0092] It is understandable that multiple first devices, second devices, and heat-conducting components 53 can be provided, with each first device, second device, and heat-conducting component 53 corresponding to the other.

[0093] It should be noted that the heat-conducting component 53 can be a heat pipe (with a high thermal conductivity), a metal heat-conducting block, or a heat spreader, etc.

[0094] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. An inverter power supply, characterized in that, include: Outer shell (10); A power distribution unit (20) is disposed inside the housing (10). The power distribution unit (20) has an input terminal (201) for connecting a first AC power. The power distribution unit (20) also includes a rectifier bridge electrically connected to the input terminal (201) for converting the first AC power into DC power. An inverter unit is disposed inside the housing (10). The inverter unit includes a busbar capacitor board (30), which is electrically connected to the rectifier bridge. An IGBT module is connected to the busbar capacitor board (30), and the IGBT module is connected to an output terminal (301). A control unit (40) is disposed inside the housing (10). The control unit (40) is connected to the IGBT module. The control unit (40) is used to control the IGBT module so that the IGBT module converts the DC power into a second AC power, which is output through the output terminal (301).

2. The inverter power supply (100) according to claim 1, characterized in that, The outer casing (10) has a first cavity (101) and a second cavity (102), and the power distribution unit (20) and the inverter unit are respectively disposed inside the first cavity (101) and the second cavity (102).

3. The inverter power supply according to claim 2, characterized in that, The control unit (40) includes a control board (41) and an inner housing (42), at least part of the control board (41) is disposed inside the inner housing (42), and the inner housing (42) is disposed inside the outer housing (10).

4. The inverter power supply according to claim 3, characterized in that, The inverter unit and the inner housing (42) are arranged sequentially with the power distribution unit (20) along a first direction, and the inverter unit and the inner housing (42) are arranged sequentially along a second direction, which is perpendicular to the first direction.

5. The inverter power supply according to claim 1, characterized in that, The power distribution unit (20) further includes a filter (22) electrically connected to the rectifier bridge, and the filter (22) includes the input terminal (201).

6. The inverter power supply according to claim 5, characterized in that, The power distribution unit (20) also includes a contactor (23) and a soft starter module (24). The filter (22), the contactor (23) and the rectifier bridge are electrically connected in sequence. The contactor (23) is electrically connected to the control unit (40) through the soft starter module (24).

7. The inverter power supply according to claim 6, characterized in that, The power distribution unit (20) also includes a circuit breaker (25), and the filter (22) is electrically connected to the contactor (23) through the circuit breaker (25).

8. The inverter power supply according to claim 7, characterized in that, A fuse (221) is installed between the filter (22) and the circuit breaker (25).

9. The inverter power supply according to any one of claims 1 to 8, characterized in that, The IGBT module includes multiple IGBT devices (31); the inverter power supply (100) also includes a heat dissipation unit (50), the heat dissipation unit (50) includes a heat sink (51), the heat sink (51) is provided with a heat dissipation pipe (52) inside, the heat dissipation pipe (52) has a liquid inlet (521) and a liquid outlet (522), the IGBT devices (31) are connected to the heat sink (51), and multiple IGBT devices (31) are arranged sequentially along the extension direction of the heat dissipation pipe (52).

10. The inverter power supply according to claim 9, characterized in that, The plurality of IGBT devices (31) include a first device and a second device, wherein the distance between the first device and the liquid outlet (522) in the extension direction of the heat dissipation pipe (52) is less than the distance between the second device and the liquid outlet (522) in the extension direction of the heat dissipation pipe (52); the heat dissipation unit (50) further includes a heat-conducting element (53), which is connected to the heat sink (51) and extends along the arrangement direction of the first device and the second device.

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