Symmetrically arranged power source for electric vehicles and its motor driving system

A motor-driven system, symmetrical distribution technology, applied in electric vehicles, engine-driven traction, electric traction, etc., can solve problems such as increasing system redundancy, and achieve the effect of flexible layout, optimized power distribution, and small physical size of components

Active Publication Date: 2007-06-13
SHANGHAI DAJUN TECH
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantage of this system is that it increases system redundancy and improves the overall reliability of the drive system; the physical size of each component in the system is small so that it can be arranged flexibly in the car and can adapt to a variety of car power system structures. However, to further improve If the total drive power is used to drive electric vehicles with higher power, it will almost encounter the insoluble problems encountered by the system shown in Figure 1

Method used

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  • Symmetrically arranged power source for electric vehicles and its motor driving system
  • Symmetrically arranged power source for electric vehicles and its motor driving system
  • Symmetrically arranged power source for electric vehicles and its motor driving system

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Embodiment Construction

[0012] A preferred embodiment of the present invention is given below according to FIG. 3 and described in detail so as to better illustrate the structural features and functional features of the present invention, rather than to limit the scope of the present invention.

[0013] Please refer to Figure 3, which shows a 4×4 symmetrically distributed power source hybrid electric vehicle wheel motor direct drive system, in which a low-voltage battery 1, a starter motor 2, an internal combustion engine 3 and a generator 4 are sequentially connected to form a conversion drive power source A group of three-phase power supply terminals 4a of the generator 4 are connected in a circuit with the power battery 11 through the power rectifier 10 to provide a hybrid driving power source for the drive motors 13 and 16, and the drive motor 13 is connected to the power battery 11 through the drive inverter 12. Circuit connection and direct mechanical connection with an electric drive wheel thro...

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Abstract

A kind of symmetrically distributed supply and a motor drive system used in electric cars includes an energy conversion power source composed of a low-voltage battery, a starting motor, an engine and a generator driven by energy sources, in which, the three-phase AC supply end of the generator is connected with a power battery by a power rectifier to make up of a mixed drive power source to drive a set of motor driven branch composed of a driving inverter and a driving motor and connect said power battery and low voltage battery by a DC/DC conversion unit characterizing that another set of independent three-phase AC supply end is added to the generator connecting to symmetrically added another power rectifier and a power battery to constitute another mixed driving power source, which is connected with anther motor drive branch composed of symmetrically added drive inverter and a motor and adds another DC/DC conversion unit to connect another power battery and a low voltage battery.

Description

technical field [0001] The invention relates to an improved power supply and motor drive system for a series hybrid electric vehicle, in particular to a symmetrically distributed power supply and a motor drive system for a series hybrid electric vehicle. Background technique [0002] At present, the power supply and motor drive system commonly used in series hybrid electric vehicles are shown in Figure 1. The driving system is composed of a low-voltage battery 1, a starter motor 2, an internal combustion engine 3 and a generator 4 connected in sequence. The mechanical energy generated by rotating the internal combustion engine 3 through fuel combustion drives the generator 4 to generate electricity, that is, converts the mechanical energy into a driving power source. The low-voltage battery 1 provides power for lighting systems and other systems (not shown) in the car, and is used to supply power to the starter motor 2 to start the internal combustion engine. The generator...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L11/12B60L50/15
CPCY02T10/7241Y02T10/7077Y02T10/7005Y02T10/70Y02T10/7072Y02T10/72
Inventor 徐性怡赵一凡
Owner SHANGHAI DAJUN TECH
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