Inventor: Sun Quanbin; Zhang Mingliang; Xie Dilin

Recently, a utility model patent independently developed by our company was authorized by the China National Intellectual Property Administration, patent number ZL 2021 2 1742197.8. The patent application was filed in July 2021 and the patent certificate was officially obtained on February 8, 2022, adding new achievements to the company's scientific and technological innovation work.

★ Patent certificate ★

★ technology ★

This utility model relates to the technical field of electric vehicle water cooling devices, particularly to a dual layer water cooling vehicle mounted multi in one device.

★ Technical background ★

In addition to the drive motor that drives the wheels to run, there are also some supporting accessories on new energy electric vehicles, such as steering motor, inflation motor, DC/DC, and high-voltage distribution box. On electric vehicles equipped with these supporting accessories, in addition to the drive motor controller, auxiliary component controllers such as steering DC/AC, pumping DC/AC, DC/DC, high-voltage distribution box, and insulation tester are also required.

There are usually two types of solutions used in the current market:

Separate the drive motor controller and various auxiliary component controllers;

Another type is an integrated multi in one motor controller.

Compared to discrete combination controllers, integrat

ed multi in one controllers have a compact structure that can reduce the total volume of the controller, thereby saving space for the entire vehicle and providing more degrees of freedom for the lightweight and structural design of automobiles. At the same time, the integrated multi in one controller reduces external wiring between discrete controllers, lowers fault points, and improves product reliability while saving costs. It will be the development direction of new energy electric vehicles in the future.

At present, in multi in one controllers, there are usually multiple high-power modules included, and as automobiles move towards lightweighting, higher requirements are placed on the cooling system of multi in one controllers. When using high-power modules, the device has very high requirements for heat dissipation performance, so how to improve heat dissipation efficiency is also an urgent problem that needs to be solved for multi in one controllers.

★ Patent Introduction ★

The purpose of this utility model is to overcome the shortcomings of existing technology. To achieve the above objectives, a dual layer water-cooled vehicle mounted multi in one device is adopted to solve the problems proposed in the background technology.

The specific content includes:

① Body;

② A heat dissipation substrate component, which is set on the inner side of the shell and forms a double-layer water channel with the shell;

③ The power module includes a vehicle power circuit board, a thin film capacitor, an IGBT module, and an OBC circuit board located at the bottom of the housing, which are arranged in a double-layer waterway. By introducing liquid into the double-layer waterway, heat can be dissipated through convection

This utility model combines multiple control devices and designs a dual channel structure using a heat dissipation substrate component, thereby introducing cooling liquid for heat dissipation. The device has a compact structure, which can reduce the total volume of the controller and save the space of the entire vehicle, providing more freedom for the lightweighting and structural design of automobiles.