Control method for quick parallel charging of hybrid electric vehicle batteries

A technology of a hybrid electric vehicle and a control method, which is applied in the field of control, and can solve problems such as inability to meet rapid acceleration and inability to quickly replenish battery power, so as to achieve the effect of improving driving experience

Pending Publication Date: 2021-04-23
IAT AUTOMOBILE TECH
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

If the current multi-frequency rapid acceleration working condition is required, because the battery cannot be quickly replenished, of course it cannot meet the demand for rapid acceleration

Method used

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Embodiment Construction

[0009] The present invention will be described in further detail below, so that those skilled in the art can implement it with reference to the description.

[0010] In the control method for rapid parallel charging of hybrid electric vehicle batteries described in the present invention, the hybrid electric vehicle has two parallel charging control modes, one is based on the existing control method, that is, the current parallel charging mode is determined according to the opening degree of the accelerator pedal and the speed of the motor. charging demand torque, and perform parallel charging on the battery according to the determined current parallel charging demand torque.

[0011] The other is to solve the demand for fast parallel charging of the battery under the condition of multiple rapid accelerations. By presetting the target torque required for fast parallel charging and setting an external command input switch, when the external command input is received When the swi...

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Abstract

The invention discloses a control method for quick parallel charging of hybrid electric vehicle batteries, which comprises the following steps that: a hybrid electric vehicle determines the current parallel charging required torque according to the opening degree of an accelerator pedal and the rotating speed of a motor so as to perform parallel charging on the batteries; setting a target torque required by quick parallel charging, and setting an external instruction input switch; and when an instruction that the external instruction input switch is switched on is received, switching from the current parallel charging required torque to the target torque required by the quick parallel charging, and performing parallel charging on the battery according to the target torque required by the quick parallel charging. According to the control method for quick parallel charging of the hybrid electric vehicle battery, due to the fact that the set target torque required by quick parallel charging is much larger than the torque required by current parallel charging, the battery can quickly recover the electric quantity, the power assisting requirement of a quick acceleration motor is met, and the driving feeling is improved.

Description

technical field [0001] The invention relates to a control method, in particular to a control method for rapid parallel charging of a battery of a hybrid electric vehicle. Background technique [0002] Due to the limited battery capacity of hybrid electric vehicles, when the vehicle undergoes several consecutive rapid accelerations, the battery power will drop to the point where it cannot support the electric motor. [0003] At this time, if the power of the battery is to be quickly restored, parallel charging is required; however, the current parallel charging control strategy only takes into account the situation that the usual rapid acceleration frequency is not high, so the parallel charging speed is relatively slow. If multiple rapid accelerations are required at present, the demand for rapid acceleration cannot be met because the battery cannot be replenished quickly. Contents of the invention [0004] Aiming at the drawbacks of the prior art, the invention provides ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W20/00B60W40/00B60L53/00
CPCB60W20/00B60W40/00B60L53/00Y02T10/62Y02T10/70Y02T10/7072Y02T90/14
Inventor 李振文王守军刘吉顺杜燕蒙王晓宇
Owner IAT AUTOMOBILE TECH
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