IGBT power module cooling structure of new energy automobile motor controller

Abstract

An IGBT power module cooling structure of a new energy automobile motor controller relates to the technical field of new energy automobile accessories, and connects water channel structures of three IGBT power modules in series, so that the flow rate of cooling liquid in water channels is higher, the upper and lower water channels are cooled simultaneously, and the cooling effect can be effectively improved. In the IGBT power module cooling structure of the new energy automobile motor controller, cooling liquid enters the lower-layer cooling water channel on the back surface of the IGBT power module cooling structure through the main water inlet channel, enters the upper-layer cooling water channel from the first water inlet, enters the lower-layer cooling water channel from the first water outlet, then enters the upper-layer cooling water channel from the second water inlet, and finally enters the lower-layer cooling water channel from the second water inlet. And the water enters the lower-layer cooling water channel from the second water outlet, then enters the upper-layer cooling water channel from the third water inlet, finally enters the lower-layer cooling water channel from the third water outlet, and finally flows out from the main water outlet channel.

Description

Technical Field

[0001] This utility model relates to the field of new energy vehicle parts technology, and in particular to a cooling structure for the IGBT power module of a new energy vehicle motor controller. Background Technology

[0002] Currently, the common cooling structure for IGBT power modules in new energy vehicle motor controllers typically adopts a parallel structure. That is, the coolant enters the IGBT power module cooling structure from the main inlet channel, flows in through three inlets to cool the IGBT power modules, and then flows out from the outlet. The inlets of the three IGBT power modules are on the same side, and the outlets are on the other side, thus ensuring that the coolant flows in through the inlets of the three IGBT power modules simultaneously and flows out through the outlets of the three IGBT power modules simultaneously to the main outlet.

[0003] However, the inventors of this application have discovered that, due to the parallel structure used in the prior art, the cooling structure of each IGBT power module will separately divert the coolant flow from the main inlet channel, which will reduce the coolant flow rate and pressure of each IGBT power module cooling structure. The reduced flow rate and pressure will affect the cooling effect of the IGBT power module. To achieve the expected cooling effect, it is necessary to increase the flow rate or pressure of the main inlet channel, which requires the use of a larger power pump, ultimately leading to increased costs. Utility Model Content

[0004] The purpose of this utility model is to provide a cooling structure for the IGBT power module of a new energy vehicle motor controller. It connects the water channel structure of three IGBT power modules in series, thereby increasing the flow rate of coolant in the water channel and cooling the upper and lower water channels simultaneously, thus effectively improving the cooling effect.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A cooling structure for an IGBT power module of a new energy vehicle motor controller includes: a housing assembly and three IGBT power modules; the housing assembly is responsible for the circuit configuration of the IGBT cooling structure and consists of an upper cooling water channel and a lower cooling water channel; the upper cooling water channel is responsible for cooling the IGBT power modules, and the lower cooling water channel is responsible for the diversion of the coolant and cooling the housing assembly.

[0007] The coolant enters the lower cooling channel on the back of the IGBT power module cooling structure through the main inlet channel, then enters the upper cooling channel through the first inlet, and enters the lower cooling channel through the first outlet. Next, it enters the upper cooling channel through the second inlet, and enters the lower cooling channel through the second outlet. Then, it enters the upper cooling channel through the third inlet, and finally enters the lower cooling channel through the third outlet, and finally flows out through the main outlet channel.

[0008] Compared with existing technologies, the IGBT power module cooling structure of the new energy vehicle motor controller described in this utility model has the following advantages:

[0009] The IGBT power module cooling structure of the new energy vehicle motor controller provided by this utility model connects the inlet and outlet of three IGBT power modules in series, which improves the flow rate of the coolant and prevents the coolant pressure from dropping too much. In addition, the structure is divided into upper and lower cooling channels. The upper cooling channel provides primary cooling and the lower cooling channel provides secondary cooling, resulting in better cooling effect through dual cooling. Attached Figure Description

[0010] Figure 1 A front view of the cooling structure of the IGBT power module of the new energy vehicle motor controller provided in this embodiment of the utility model.

[0011] Figure 2 A schematic diagram of the back structure of the cooling structure of the IGBT power module of the new energy vehicle motor controller provided in this embodiment of the utility model;

[0012] Figure 3 A schematic diagram of the coolant flow direction of the IGBT power module cooling structure of the new energy vehicle motor controller provided in this embodiment of the utility model.

[0013] Figure label:

[0014] 1-Box assembly; 2-IGBT power module; 3-Upper cooling water channel; 4-Lower cooling water channel; 51-Main water inlet; 52-Main water outlet; 61-First water inlet; 62-First water outlet; 71-Second water inlet; 72-Second water outlet; 81-Third water inlet; 82-Third water outlet. Detailed Implementation

[0015] For ease of understanding, the cooling structure of the IGBT power module of the new energy vehicle motor controller provided in this embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

[0016] This utility model embodiment provides a cooling structure for the IGBT power module of a new energy vehicle motor controller, such as... Figures 1-3 As shown, it includes: a housing assembly 1 and three IGBT power modules 2; the housing assembly 1 is responsible for the circuit configuration of the IGBT cooling structure and consists of an upper cooling channel 3 and a lower cooling channel 4; the upper cooling channel 3 is responsible for cooling the IGBT power modules 2, and the lower cooling channel 4 is responsible for the diversion of the coolant and cooling the housing assembly 1.

[0017] The coolant enters the lower cooling channel 4 on the back of the IGBT power module cooling structure through the main inlet channel 51, and then enters the upper cooling channel 3 through the first inlet 61, and the lower cooling channel 4 through the first outlet 62. Next, it enters the upper cooling channel 3 through the second inlet 71, and the lower cooling channel 4 through the second outlet 72. Then, it enters the upper cooling channel 3 through the third inlet 81, and finally enters the lower cooling channel 4 through the third outlet 82, and finally flows out through the main outlet channel 52.

[0018] Compared with the prior art, the IGBT power module cooling structure of the new energy vehicle motor controller described in this embodiment of the invention has the following advantages:

[0019] In the IGBT power module cooling structure of the new energy vehicle motor controller provided in this embodiment, the inlet and outlet of the three IGBT power modules are connected in series, which improves the flow rate of the coolant and prevents the coolant pressure from dropping too much. Furthermore, the structure is divided into upper and lower cooling channels, with the upper channel providing primary cooling and the lower channel providing secondary cooling, resulting in better cooling performance through dual cooling.

[0020] In summary, the IGBT power module cooling structure for the new energy vehicle motor controller provided in this embodiment of the invention has the following advantages:

[0021] First, it has a high degree of integration, a compact structure, which facilitates layout and has a low cost;

[0022] Second, for IGBT power modules of the same power, series cooling is more effective than parallel cooling.

[0023] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A cooling structure for the IGBT power module of a new energy vehicle motor controller, characterized in that, include: The enclosure assembly includes a housing assembly and three IGBT power modules. The housing assembly is responsible for the circuit configuration of the IGBT cooling structure and consists of an upper cooling channel and a lower cooling channel. The upper cooling channel is responsible for cooling the IGBT power modules, and the lower cooling channel is responsible for directing the coolant and cooling the housing assembly. The coolant enters the lower cooling channel on the back of the IGBT power module cooling structure through the main inlet channel, then enters the upper cooling channel through the first inlet, and enters the lower cooling channel through the first outlet. Next, it enters the upper cooling channel through the second inlet, and enters the lower cooling channel through the second outlet. Then, it enters the upper cooling channel through the third inlet, and finally enters the lower cooling channel through the third outlet, and finally flows out through the main outlet channel.

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