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Control for hybrid electric vehicle and control method

A hybrid vehicle and control device technology, which is applied to hybrid vehicles, motor vehicles, electric vehicles, etc., can solve the problem of setting multiple power supply paths for one motor to distinguish between uses, so as to suppress the operating rate, prevent heat generation, and improve efficiency effect

Inactive Publication Date: 2008-12-31
MAZDA MOTOR
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Problems solved by technology

[0005] However, in the structure described in Patent Document 1, there is no structure such as setting a plurality of power supply paths for one motor or using each power supply path according to the operating status.
Therefore, problems such as reduced operating efficiency or aging of components connected to the power supply path cannot be avoided

Method used

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  • Control for hybrid electric vehicle and control method
  • Control for hybrid electric vehicle and control method
  • Control for hybrid electric vehicle and control method

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Embodiment Construction

[0037] Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

[0038] However, in each of the following embodiments, the same reference numerals are assigned to equivalent components, and overlapping descriptions will be omitted. In addition, the term "regeneration" in this specification means converting kinetic energy into electrical energy and storing the electrical energy in a broad sense. In a narrow sense, it means that the electric motor is operated as a generator, and the kinetic energy of the vehicle is converted into electrical energy and recovered.

[0039] First, specific problems of the embodiments shown below will be described.

[0040] figure 1 is the characteristic diagram of the inverter.

[0041] refer to figure 1 , a typical inverter has diodes. Therefore, in an operating region where the load factor (output current) is low, the efficiency is remarkably lowered. On the other hand, the capacity requ...

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Abstract

The present invention relates to a hybrid electric vehicle, a control system and method thereof. The hybrid electric vehicle comprises a first inverter (23) for converting the DC of a generator (20) into AC and a second inverter (24) connected with the first inverter (23) in parallel. A generator (25) connects with the first inverter (23) and the second inverter (24). The hybrid electric vehicle calculates needed current when generator (25) is driving, and controls selective operation of the first inverter (23) and the second inverter (24) based on the current so as to drive the first inverter and the second inverter to operate with optimal efficiency. In addition, the hybrid electric vehicle calculates the current generated by the generator (25) when using a current generating accumulator generated by the generator (25), and controls selective operation of the first inverter (23) and the second inverter (24) based on the current so as to drive the first inverter and the second inverter to operate with optimal efficiency. The hybrid electric vehicle can also avoid inverters overloading.

Description

technical field [0001] The present invention relates to a hybrid vehicle, a control device thereof, and a control method thereof. Background technique [0002] The so-called series hybrid vehicle, as shown in, for example, Japanese Patent Laid-Open Publication No. 2005-204370 (hereinafter referred to as Patent Document 1), uses an internal combustion engine to drive a generator, supplies power from the generator to an electric motor, and is driven by the electric motor. Drive wheels of the vehicle. Unlike a parallel hybrid vehicle, in a series hybrid vehicle, the internal combustion engine is dedicated to generating electricity and the power generated by the internal combustion engine is not mechanically transferred to the drive wheels. [0003] In order to improve the efficiency of hybrid vehicles, Patent Document 1 discloses a method that uses a diode rectifier to rectify the generated current of a generator driven by an internal combustion engine, thereby reducing the lo...

Claims

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Application Information

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IPC IPC(8): B60L11/08B60W20/00B60L50/13B60L50/15
CPCY02T10/62Y02T10/70Y02T10/7072
Inventor 米盛敬濑尾宣英齐藤行平赤木泰文藤田英明
Owner MAZDA MOTOR
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