Kubota had 25 patents in batteries during Q3 2023.Kubota Corp has filed a patent for an electric tractor that features an electric motor, a battery, and an inverter. The tractor also includes a vehicle body frame with a hood to cover the battery, and a support frame attached to the vehicle body frame. The support frame includes a battery support positioned above the electric motor and the vehicle body frame, as well as an inverter support located between the battery support and the vehicle body frame, and in front of the electric motor. GlobalData’s report on Kubota gives a 360-degreee view of the company including its patenting strategy. Buy the report here.
Kubota grant share with batteries as a theme is 32% in Q3 2023. Grant share is based on the ratio of number of grants to total number of patents.
Application: Electric tractor (Patent ID: US20230227106A1)
The patent filed by Kubota Corp. describes an electric tractor with specific features and components. The tractor includes an electric motor that drives a traveling device, a battery, and an inverter that supplies electric power from the battery to the motor. The vehicle body frame is located below a hood in front of the operator's seat, which covers the battery. The tractor also has a support frame attached to the vehicle body frame. The support frame includes a battery support that holds the battery above the motor and the vehicle body frame, and an inverter support that holds the inverter between the battery support and the vehicle body frame, in front of the motor.
The battery support consists of a placement plate for the battery and a mounting bracket that protrudes downward from the placement plate. The inverter support includes a supporting plate for the inverter, which is located below the placement plate with a space in between. The supporting plate is attached to the vehicle body frame, and a support stay protrudes upward from the supporting plate to which the mounting bracket of the battery support is attached.
The inverter is positioned to overlap the electric motor when viewed from the front to rear direction. The support frame also includes a support portion that supports the rear portion of the placement plate. The support portion consists of a support plate located above the electric motor and a support leg fixed to the vehicle body frame on the same side as the lower surface of the support plate.
Additionally, the patent describes an electric tractor with an operator portion that includes an operator's seat and a steering portion. The tractor has a vehicle body, a traveling device, an electric motor, a battery, and a charging connector for the battery. The steering portion includes an operation member and a cover body that covers the lower portion of the operation member. The charging connector is located outside the cover body, exposed outward of the steering portion. The charging connector is oriented outward in the vehicle width direction and is positioned on the upper portion of the outer surface of the front cover of the steering portion.
The patent also mentions a connector bracket to which the charging connector is attached. The connector bracket includes a connector mounting portion outside the front cover and a mounting wall portion attached to a mounting portion inside the front cover. The connector bracket may also include a mirror mounting portion and a lamp mounting portion for attaching a side mirror and an indicator lamp, respectively.