A kind of for multiple IGBT module motor controller waterway and series way cooling device, new energy vehicle-mounted motor controller and vehicle

Abstract

The application discloses a kind of for multiple IGBT module motor controller water channel and series mode cooling system, new energy vehicle-mounted motor controller and vehicle, the device includes: liquid inlet, liquid outlet, partial pressure area, the partial pressure area includes shell and multiple active devices, the space formed by the shell and the multiple active devices as cooling water channel structure, when cooling liquid enters by the liquid inlet, by the cooling water channel structure, again by the liquid outlet discharge. The cooling water channel provided by the application can be cooled and depressurized, and can be used for motor controller.

Description

Technical Field

[0001] This application relates to the field of motor controllers for new energy vehicle equipment, and more particularly to a cooling water channel device, a new energy vehicle motor controller, and a vehicle. Background Technology

[0002] Motor controllers can be used in the field of new energy vehicle equipment.

[0003] In related technologies, in order to prevent excessive water pressure in the motor controller, it is necessary to reduce the possibility of water entering the controller and causing damage to its internal structure. Therefore, a pressure-dividing structure needs to be designed in the coolant inlet and inside the motor controller. Utility Model Content

[0004] This application provides a cooling device for multiple IGBT module motor controllers in a parallel-connected water channel configuration, a new energy vehicle motor controller, and a vehicle, to achieve better heat dissipation while controlling pressure loss.

[0005] The embodiments of this application adopt the following technical solutions: In a first aspect, embodiments of this application provide a cooling device for multiple IGBT module motor controllers in a parallel-connected cooling system. The device includes: an inlet, an outlet, and a pressure-dividing zone. The pressure-dividing zone includes a housing and multiple active devices. The space formed by the housing and the multiple active devices serves as a cooling channel structure. After the coolant enters through the inlet, it passes through the cooling water channel structure and is then discharged through the outlet.

[0006] In some embodiments, the active device includes an IGBT module.

[0007] In some embodiments, the plurality of IGBT modules are connected in parallel or in series.

[0008] In some embodiments, heat dissipation fins are provided on the substrate of the IGBT module.

[0009] In some embodiments, the coolant flows out from an on-board cooling system.

[0010] In some embodiments, the pressure N of the vehicle cooling system at the outlet after passing through the pressure dividing zone is N / 10.

[0011] In some embodiments, the housing includes the housing of a motor controller.

[0012] In some embodiments, the inlet and outlet are arranged parallel to each other and have the same opening orientation.

[0013] Secondly, embodiments of this application also provide a new energy vehicle motor controller, which includes the cooling device described in the first aspect for multiple IGBT module motor controllers in a parallel and series configuration.

[0014] Thirdly, embodiments of this application also provide a vehicle, which includes the new energy vehicle motor controller described in the second aspect.

[0015] The at least one technical solution adopted in this application embodiment can achieve the following beneficial effects: the cooling water channel device adopts an inlet, an outlet, and a pressure-dividing zone. The pressure-dividing zone includes a housing and multiple active devices. The space formed by the housing and the multiple active devices serves as the cooling water channel structure. When coolant enters through the inlet, it passes through the cooling water channel structure and is then discharged through the outlet. This cooling water channel device overcomes the shortcomings of insufficient pressure loss in the direct series pressure-dividing structure of existing new energy vehicle motor controllers, as well as the complex installation and large size of the pressure-reducing valve. By forming a cooling system with the motor controller housing and the heat dissipation fins of multiple active devices connected in series using a water channel pressure-dividing system, a greater pressure loss is achieved. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a schematic diagram of the internal structure of the cooling device for multiple IGBT module motor controllers in a parallel-connected manner, as described in the embodiments of this application. Figure 2 This is a schematic diagram of the internal structure of a cooling device for a parallel-connected cooling system for multiple IGBT module motor controllers in another embodiment of this application; Figure 3 This is a schematic diagram of the water flow direction in the parallel-connected cooling device for multiple IGBT module motor controllers in this embodiment of the application. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0018] The related technology proposes two pressure-sharing schemes: series pressure division and pressure-reducing valve installation. Specifically: (1) Although the flow rate and heat dissipation are uniform in the series pressure distribution scheme, the pressure loss is limited to within 30%, and it is difficult to achieve higher. For the cooling system of new energy vehicles, it is difficult to achieve a pressure loss of about 90%.

[0019] (2) In the installation scheme of pressure reducing valve, due to installation requirements, it is installed at the inlet, and the distance between it and the outlet is at least 4 meters. Furthermore, the volume of pressure range will be limited.

[0020] The technical solutions provided by the various embodiments of this application are described in detail below with reference to the accompanying drawings.

[0021] This application provides a cooling device for multiple IGBT module motor controllers in a parallel-connected cooling system, such as... Figure 1 as well as Figure 2 The diagram shows the internal structure of a cooling water channel device in an embodiment of this application. The device includes an inlet 1, an outlet 2, and a pressure-dividing zone 5. The pressure-dividing zone 5 includes a housing 3 and multiple active devices 4. The space formed by the housing and the multiple active devices serves as a cooling water channel structure. When coolant enters through the inlet, it passes through the cooling water channel structure and is then discharged through the outlet. The inlet 1 and the outlet 2 have the same opening orientation. The inlet 1 serves as the inlet for the coolant, and the outlet 2 serves as the outlet for the coolant. Figure 3 The flow direction is shown. It can be understood that the materials of the inlet 1 and the outlet 2 can be metal or other materials. The pressure-dividing zone 5 mainly includes a housing 3 and multiple active devices 4. The number of active devices 4 can be selected according to actual conditions. The housing 3 is mainly the housing of the motor controller. That is, the space formed by a part of the motor controller housing and the multiple active devices is the pressure-dividing zone 5. Preferably, the space formed by the housing 3 and the multiple active devices 4 is a cooling water channel structure. During operation, when the coolant enters through the inlet 1, it passes through the cooling water channel structure and is then discharged through the outlet 2.

[0022] The aforementioned cooling water channel device overcomes the shortcomings of insufficient pressure loss in the direct series pressure-splitting structure of existing new energy vehicle motor controllers, as well as the complex installation and large size of the pressure-reducing valve. By forming a cooling system with the motor controller housing and the heat dissipation fins of multiple active devices in series using a water-splitting pressure distribution system, a greater pressure loss is achieved.

[0023] As a preferred embodiment, the active device includes an IGBT module.

[0024] The active device preferably uses an IGBT module, and more preferably, the active device includes an IGBT module. An IGBT (Insulated Gate Bipolar Transistor) is a composite, fully controllable, voltage-driven power semiconductor device composed of a BJT (Bipolar Junction Transistor) and a MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor), combining the advantages of the high input impedance of a MOSFET and the low on-state voltage drop of a GTR. It should be noted that multiple IGBT modules can be connected in series or in parallel.

[0025] As a preferred embodiment, the multiple IGBT modules are connected in parallel and series.

[0026] like Figure 1 As shown, the multiple IGBT modules are connected in parallel first and then in series.

[0027] The space formed by the multiple IGBT modules and the housing serves as a cooling water channel structure. Assuming the pipe pressure of the vehicle cooling system is PN20, the pressure is divided through the pressure-dividing zone, thereby reducing the pressure of the entire heat dissipation area to PN2.

[0028] As a preferred embodiment, the substrate of the IGBT module is provided with heat dissipation fins.

[0029] like Figure 2 As shown, the heat dissipation fins 6 are as follows Figure 2 As shown, the heat dissipation fins 6 can include multiple fins. The coolant first enters the inlet, then enters the pressure-dividing area of ​​the IGBT module. This pressure-dividing area is the pressure-dividing structure formed by the main housing and the heat dissipation fins 6 of the IGBT module. Simultaneously, the area between the housing and the IGBT module heat dissipation fins forms a parallel-to-serial water channel structure. The pipe pressure of the vehicle cooling system is PN20, thus the entire heat dissipation area is divided into pressure PN2. Because the cooling water channel device uses the area between the housing and the IGBT heat dissipation fins as the pressure-dividing structure, its pressure loss is controlled to 90%. Therefore, for new energy vehicle cooling systems, the pressure loss space can be controlled to approximately 90%.

[0030] In this embodiment, the coolant flows out from the vehicle cooling system.

[0031] The coolant flowing out of the vehicle's cooling system passes through the inlet, pressure dividing zone, and outlet, and the pressure of the flowing coolant is divided.

[0032] In this preferred embodiment, the pressure N of the vehicle cooling system at the outlet after passing through the pressure dividing zone is N / 10.

[0033] Coolant PN20 enters the inlet and then the pressure-dividing zone. This zone, primarily the space between the housing and the IGBT heat sink fins, forms a pressure-dividing structure, thus reducing the pressure in the entire heat dissipation area to PN2. The coolant is then connected in series to the outlet. The internal cooling water channel structure of the controller utilizes the area between the housing and the IGBT heat sink fins as a pressure-dividing structure to control pressure loss to approximately 90%.

[0034] As a preferred embodiment, the housing includes the housing of the motor controller.

[0035] It can be understood that the housing of the motor controller, as part of the pressure divider area, forms a space with the multiple active devices as a cooling water channel structure.

[0036] This application also provides a new energy vehicle motor controller in its embodiments, which includes the aforementioned cooling device for multiple IGBT module motor controllers connected in series with water channels. The device includes: an inlet, an outlet, and a pressure-dividing zone. The pressure-dividing zone includes a housing and multiple active devices, and the space formed by the housing and the multiple active devices serves as a cooling water channel structure. After the coolant enters through the inlet, it passes through the cooling water channel structure and is then discharged through the outlet.

[0037] In some embodiments, the active device includes an IGBT module.

[0038] In some embodiments, the plurality of IGBT modules are connected in parallel or in series.

[0039] In some embodiments, the IGBT module comprises six IGBTs.

[0040] In some embodiments, heat dissipation fins are provided on the substrate of the IGBT module.

[0041] In some embodiments, the coolant flows out from an on-board cooling system.

[0042] In some embodiments, the pressure N of the vehicle cooling system at the outlet after passing through the pressure dividing zone is N / 10, where N is a constant.

[0043] In some embodiments, the housing includes the housing of a motor controller.

[0044] This application also provides a vehicle in its embodiments, which includes the aforementioned new energy vehicle motor controller. In the vehicle, the vehicle coolant enters a pressure-dividing pipe formed by the motor controller housing and the IGBT module heat sink fins. The pressure-dividing pipe controls the pressure loss to 90%, dividing the PN20 voltage to PN2, achieving a large pressure difference within the motor controller. The pressure loss range is designable, and excellent heat dissipation is achieved simultaneously.

[0045] The above description is merely an embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this application should be included within the scope of the claims of this application.

Claims

1. A cooling device for multiple IGBT module motor controllers in a parallel-connected cooling system, wherein, The device includes: a liquid inlet, a liquid outlet, and a pressure-dividing zone. The pressure-dividing zone includes a housing and multiple IGBT modules. The space between the housing and the heat dissipation fins of the IGBT modules forms and connects to a cooling water channel structure. The housing includes the housing of a motor controller. The cooling channels of the multiple IGBT modules are connected in a parallel grouping and then in series confluence. The coolant flows sequentially along the inlet, parallel branches, series confluence, and outlet channels. The pressure-reducing zone reduces the coolant pressure from N to N / 10, achieving 90% pressure loss heat dissipation through pressure reduction.

2. The cooling device for multiple IGBT module motor controllers in parallel and series configuration as described in claim 1, characterized in that, Multiple IGBT modules are connected in parallel or in series.

3. The cooling device for multiple IGBT module motor controllers in parallel and series configuration as described in claim 1, characterized in that, The coolant flows out from the vehicle's cooling system.

4. The cooling device for multiple IGBT module motor controllers in parallel and series configuration as described in claim 1, characterized in that, The inlet and outlet are arranged parallel to each other and have the same opening direction.

5. A new energy vehicle on-board motor controller, characterized in that, Includes the cooling device for multiple IGBT module motor controller water channels in series as described in any one of claims 1 to 4.

6. A vehicle, characterized in that, Including the new energy vehicle motor controller as described in claim 5.

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