Electric power balance control method of hybrid vehicle

A hybrid vehicle and balance control technology, which is applied to hybrid vehicles, motor vehicles, electric vehicles, etc., can solve the problems of reduced stability of system components, low reliability, and inability to balance system power demand and electric power, etc., to achieve The effect of ensuring stability

Inactive Publication Date: 2015-04-29
励春亚
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AI Technical Summary

Problems solved by technology

[0002] The traditional electric power balance control method of hybrid electric vehicles can not solve the problem of electric power balance well, and then greatly reduces the stability and reliability of the system components, and cannot balance the power demand and electric power of the system, resulting in excessive battery life. Overcharging and overdischarging greatly reduces the service life of the power battery pack

Method used

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  • Electric power balance control method of hybrid vehicle
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Embodiment Construction

[0009] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0010] refer to figure 1 , the specific embodiment adopts the following technical solutions: the electric power balance control method of hybrid electric vehicle, its steps are: 1, according to data such as busbar voltage and battery internal resistance, battery pack SOC online observation or identification battery pack power, thereby calculate different Balanced electric power; the integrated controller of the hybrid hybrid power system calculates the electric power that motors A and B need to compensate additionally according to the unbalanced electric power, and sends the control command to the motor controller to make the two electric motors generate additional absorbed or released electric power, thereby Stabilize the bus voltage.

[0011] 2...

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Abstract

The invention discloses an electric power balance control method of a hybrid vehicle, and relates to the electric power balance control method which comprises the following steps: 1, observing or recognizing power of a battery pack on line according to data such as busbar voltage, internal resistance of a battery and battery pack SOC, and calculating the unbalance electric power; calculating electric power needing to be additionally compensated to a motor A and a motor B by a series-parallel hybrid power system comprehensive controller according to the unbalance electric power, sending a control instruction to a motor controller to enable the two motors to generate additionally absorbed or released electric power to cause the busbar voltage to return to the stable state; 2, calculating the target current of the battery pack through battery target power, calculating the actual current estimation value through a battery pack model or related parameters, and defining the specific value between the actual current and the target current as a reference value. The working stability and reliability of system components are ensured, the electricity demand and electric power balance of the system are ensured, and the service life of the battery pack is prolonged.

Description

technical field [0001] The invention relates to an electric power balance control method, in particular to an electric power balance control method for a hybrid vehicle. Background technique [0002] The traditional electric power balance control method of hybrid electric vehicles can not solve the problem of electric power balance well, and then greatly reduces the stability and reliability of the system components, and cannot balance the power demand and electric power of the system, resulting in excessive battery life. Overcharging and overdischarging greatly reduces the service life of the power battery pack. Contents of the invention [0003] Aiming at the deficiencies in the prior art, the purpose of the present invention is to provide an electric power balance control method of a hybrid vehicle to ensure the stability and reliability of the system components, and to ensure the balance between the system's electricity demand and electric power. Avoiding overcharge a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00H01M10/42B60R16/033
CPCB60W10/26B60W10/08B60W20/10B60W2510/085B60W2510/242B60W2710/086
Inventor 励春亚
Owner 励春亚
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