Automobile torque control method and system

Active Publication Date: 2020-11-03
ZHEJIANG GEELY HLDG GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention discloses an automobile torque control method and system, which solves the problem that the power battery is prone to overdischarge and overcharge during the use of the existing automobile and reduces the service life of the power battery, and can effectively improve the safety and performance of the power battery. Improve the coordination ability of the whole vehicle operation

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  • Automobile torque control method and system
  • Automobile torque control method and system
  • Automobile torque control method and system

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Embodiment Construction

[0069] In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is an embodiment of a part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0070] Reference herein to "one embodiment" or "an embodiment" refers to a particular feature, structure or characteristic that can be included in at least one implementation of the present invention. In the description of the present invention, it should be understood that the terms "first", "second", "third" and "fourth" in the de...

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Abstract

The invention relates to the technical field of automobile charging and discharging control, in particular to an automobile torque control method and system, and the method comprises the steps: determining the current allowable working power of a battery according to the obtained current state information of the battery; according to the current allowable working power of the battery, determininga first threshold value and a second threshold value of the current allowable working power of the motor; determining the current allowable use power of the motor according to the current use power ofthe motor, the first threshold value and the second threshold value; determining the current allowable use torque of the motor according to the current allowable use power of the motor; and controlling the automobile according to the current allowable torque of the motor. The available charging and discharging power limit values allowed by two stages are set, and the first threshold value is gradually released to the second threshold value when the calculated current use power of the motor reaches the first threshold value, so that overdischarging and overcharging of the battery are avoided while the potential of the maximum charging and discharging power allowed by the battery is mined.

Description

technical field [0001] The invention relates to the technical field of automobile charging and discharging control, in particular to an automobile torque control method and system. Background technique [0002] In pure electric vehicles or (plug-in) hybrid vehicles, the power battery is used as the power source. However, due to the limitations of the technical conditions of the current power battery industry, the electrical performance of the power battery is affected by various factors such as ambient temperature, stability, and charge capacity. Affected, the electrical performance fluctuates greatly. For example, at low temperature or when the battery power is low, the maximum discharge power allowed by the battery is limited. If high-power discharge is required to meet the power requirements of the vehicle, it will easily lead to over-discharge of the power battery, which will reduce the service life of the power battery. At this time, it is necessary to ensure the drive...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L15/20
CPCB60L15/20B60L2240/423Y02T10/72
Inventor 叶先军
Owner ZHEJIANG GEELY HLDG GRP CO LTD
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