Suzuki Motor has filed a patent for an electric apparatus designed for electric vehicles. The apparatus includes multiple electrical devices, an electrical drive system, and an accommodation case. The case features intake and discharge ports for cooling air, with a cooling fan located at either the intake or discharge port. GlobalData’s report on Suzuki Motor gives a 360-degree view of the company including its patenting strategy. Buy the report here.

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According to GlobalData’s company profile on Suzuki Motor, HEV energy management was a key innovation area identified from patents. Suzuki Motor's grant share as of September 2023 was 23%. Grant share is based on the ratio of number of grants to total number of patents.

Electric apparatus for cooling electrical devices in electric vehicles

Source: United States Patent and Trademark Office (USPTO). Credit: Suzuki Motor Corp

The filed patent (Publication Number: US20230302893A1) describes an electric apparatus installed in an electric vehicle. The apparatus includes a plurality of electrical devices, such as an electric motor, a battery, and an inverter, which are housed in an accommodation case. The accommodation case has an upper surface with an intake port and a discharge port for cooling air. A cooling fan is provided at either the intake port or the discharge port.

The plurality of electrical devices in the apparatus includes an electric motor that drives the electric vehicle, a battery that supplies power to the motor, and an inverter that rotationally drives the motor. The battery is installed with gaps between the battery and the front wall and side walls of the accommodation case. The intake port overlaps the battery in a plan view.

An intake duct is connected to the intake port, and the downstream side of the intake duct is inclined forward as it approaches the upper surface of the accommodation case. The gap between the battery and one side wall of the accommodation case is larger than the gap between the battery and the other side wall. The inverter is installed near the side of the one side wall.

The intake port is formed at a position deviated to the side of the one side wall with respect to a center line of the accommodation case extending in a front-rear direction. This arrangement allows for efficient cooling of the electrical devices.

The inverter is installed with gaps between the inverter and the rear wall and side wall of the accommodation case. At least a part of the discharge port overlaps the inverter in a plan view. A discharge duct is connected to the discharge port, and the upstream side of the discharge duct is inclined forward as it recedes from the upper surface of the accommodation case.

Overall, this patent describes an electric apparatus for an electric vehicle that efficiently cools the electrical devices, such as the motor, battery, and inverter, through the use of intake and discharge ports, cooling fans, and ducts. The arrangement of the electrical devices and the cooling system allows for effective cooling and optimal performance of the electric apparatus in the vehicle.

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