A control method and control system for automatic shifting of a two-speed transmission of an electric vehicle

A control method and transmission technology, which are applied to control devices, vehicle components, driver input parameters, etc., can solve the problems of predicting the driver's intention in advance and poor drivability of the whole vehicle, achieving easy and precise control, rapid action, and improved driving. sexual effect

Inactive Publication Date: 2017-08-08
CHONGQING SOKON IND GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method cannot effectively predict the driver's intention in advance, making the drivability of the vehicle poor.

Method used

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  • A control method and control system for automatic shifting of a two-speed transmission of an electric vehicle
  • A control method and control system for automatic shifting of a two-speed transmission of an electric vehicle

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Embodiment Construction

[0016] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0017] In the description of the present invention, unless otherwise specified and limited, it should be noted that the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be mechanical connection or electrical connection, or two The internal communication of each element may be directly connected or indirectly connected through an intermediary. Those skilled in the art can understand the specific meanings of the above terms according to specific situations.

[0018] The inventio...

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PUM

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Abstract

The invention provides a control method for automatic gear shifting of an electric vehicle two-gear transmission. The control method includes the steps that after a finished vehicle is normally supplied with power, a gear shifting device is propelled to the forward gear, an accelerator pedal is treaded, a motor controller controls the output of a motor, and a transmission controller detects the rotating speed of the motor and the input quantity of the accelerator pedal. The transmission controller judges whether the finished vehicle meets the gear shifting condition or not according to the rotating speed of the motor and the input percentage of the accelerator pedal, and gear shifting is conducted when the rotating speed of the motor and the input percentage of the accelerator pedal meet the gear shifting condition; if the rotating speed of the motor and the input percentage of the accelerator pedal do not meet the gear shifting condition, the current status is maintained; the transmission controller is in communication with the motor controller, speed regulating and gear shifting begin, and the driving force of the finished vehicle is reduced to be zero; after gear shifting is completed, the finished vehicle recovers the driving force, and the finished vehicle runs continuously. The intention of a driver can be prejudged effectively, and the driving performance of the finished vehicle is good.

Description

technical field [0001] The invention relates to the field of gear shifting of electric vehicles, in particular to a control method for automatic gear shifting of a two-speed transmission of an electric vehicle and a control system thereof. Background technique [0002] At present, electric vehicles on the market are mostly driven by manual gearboxes or single-stage reducers, and manual gearboxes have disadvantages such as inconvenient operation and single-stage reducers that are difficult to match motors, which makes the economy and drivability of electric vehicles uneffective. combination. In order to solve this problem, CN200810125793 discloses a clutchless shift control method for pure electric vehicles. The driver controls the speed of the vehicle through the throttle, and the shift process in the gearbox is controlled by the relevant control device of the vehicle. auto-complete. However, this method cannot effectively predict the driver's intention in advance, making ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60W30/19B60W10/08B60W10/11
CPCB60W10/08B60W10/11B60W30/19B60W2510/081B60W2540/10B60W2710/1005
Inventor 张兴海梁鹏刘锋南富乾彭自力王承兵冯鹏
Owner CHONGQING SOKON IND GRP CO LTD
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