Hybrid power automobile, battery electric quantity balance control method and control system

Abstract

The invention relates to a hybrid power automobile, a battery electric quantity balance control method and a control system. During the operation of the hybrid power vehicle, when the battery electricquantity is reduced to a low set threshold value, the power generation power of a generator is increased, as the output power of a driving motor is kept unchanged or only floats in a small range, then the power generation power of the generator and the output power of the driving motor have a certain difference, and thus the electric quantity is saved, and the electric quantity is used for recharging the battery; and when the electric quantity of the battery increases to a high set threshold value, the power generation power of the generator is controlled to be switched to the value before the increase, and thus the consistency of input and output is realized, and the electric quantity of the battery is ensured to be stable in a balanced state. Therefore, the power generation quantity ofthe generator and the power consumption of the driving motor are dynamically coordinated and controlled, so that the electric quantity balance under multiple working conditions can be realized, the situations that the electric quantity cannot be balanced such as under-voltage and over-voltage of the battery are avoided, and the service life of the battery is prolonged.

Description

technical field [0001] The invention relates to a hybrid electric vehicle, a battery power balance control method and a control system, and belongs to the technical field of battery power balance control of the hybrid power vehicle. Background technique [0002] It is critical for a hybrid vehicle to maintain a balanced battery charge during operation. During the operation of the vehicle, it must not only meet the requirements of the working conditions, but also meet the requirements of the battery in real time, keep the battery power balanced, control the battery within the available power range, and prevent undervoltage and overvoltage. If the whole vehicle can ensure the balance of battery power, the battery life will be greatly improved. Therefore, realizing the balance of battery power has become an urgent problem to be solved. [0003] At present, during the use of hybrid vehicles, there are situations where the battery power is not balanced, such as undervoltage and ...

AI Technical Summary

Problems solved by technology

[0003] At present, during the use of hybrid vehicles, there are situations where the battery power is not balanced, such as undervoltage and overvoltage, especially when climbing a long slope, the battery power continues to decrease, and the battery is prone to undervoltage, which affects its life.

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