Invention Grant
- Patent Title: Electric vehicle
- Patent Title (中): 电动车
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Application No.: US11429116Application Date: 2006-05-04
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Publication No.: US07478692B2Publication Date: 2009-01-20
- Inventor: Jun Taue , Gen Mizutani , Kiyohisa Sugii
- Applicant: Jun Taue , Gen Mizutani , Kiyohisa Sugii
- Applicant Address: JP Shizuoka-ken
- Assignee: Yamaha Hatsudoki Kabushiki Kaisha
- Current Assignee: Yamaha Hatsudoki Kabushiki Kaisha
- Current Assignee Address: JP Shizuoka-ken
- Agency: Knobbe Martens Olson & Bear, LLP
- Priority: JP2003-375177 20031105
- Main IPC: B60K6/24
- IPC: B60K6/24

Abstract:
In an electric vehicle driven by a drive motor with electric power generated by an engine-driven generator and with electric power from a battery, the electric vehicle includes a residual battery power detecting module for detecting a residual power capacity of the battery, and a motor control module. When the residual power capacity decreases below an established (e.g., preset) lower limit, the motor control module lowers a voltage of an accelerator output signal, which is output in response to a rotational angle of an accelerator, to a value less than a voltage given under a condition where the residual power capacity is greater than or equal to an established (e.g., preset) lower limit. In this manner, the larger rotational movement of the accelerator required to control a rotational speed of the drive motor provides a rider with a sensory indication of the operating state of the vehicle (e.g., the residual power capacity of the battery).
Public/Granted literature
- US20060260851A1 Electric vehicle Public/Granted day:2006-11-23
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