Tandem type hybrid power electric drive system

An electric drive system, hybrid technology, applied in the electrical field, can solve the problems of heavy peak power supply, limited performance and practical design, and achieve the effect of low cost

Inactive Publication Date: 2014-07-23
苏州紫荆清远新能源汽车技术有限公司
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a series hybrid electric drive system, which is used to solve the problem that the performance of the existing series hybrid vehicle drive system is limited by the actual design during low-speed regenerative braking, and if the engine / generator power supply module and the peak power supply The constraint of having the same rated voltage can lead to heavy peak power problems

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Embodiment Construction

[0027] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0028] Such as figure 2 Shown is a schematic structural diagram of a series hybrid electric drive system provided by an embodiment of the present invention, the system includes: engine / generator power supply module 1, peak power supply 2, traction motor 3, motor drive device 4 and DC - DC converter 9 . The power supply voltage output end of the engine / generator power supply module 1 is electrically connected to the voltage input end of the motor drive device 4 to form a DC bus; the voltage output end of the motor drive device 4 is electrically connected to the power supply voltage input end of the traction motor 3; the peak power supply 2 It is connected to the DC bus through a DC-DC converter 9 , that is, one voltage input / output terminal of the DC-DC...

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Abstract

The invention provides a tandem type hybrid power electric drive system, and belongs to the field of electric engineering. The tandem type hybrid power electric drive system is used for solving the problems that in the prior art, the performance is limited by actual design in the low-speed regeneration braking process, and an engine / generator power supply module and a peak value power supply have to meet the constraint condition that the rated voltages are identical. The tandem type hybrid power electric drive system comprises the engine / generator power supply module, the peak value power supply, an electromotor drive device, a traction electromotor and a DC-DC converter. The power supply voltage output end of the engine / generator power supply module is electrically connected with the voltage input end of the electromotor drive device to form a DC bus. The voltage output end of the electromotor drive device is electrically connected with the power supply voltage input end of the traction electromotor. The peak value power supply is connected with the DC bus through the DC-DC converter. The constraint condition that the rated voltage of the engine / generator power supply module and the rated voltage of the peak value power supply are identical is broken through in the system, and the peak value power supply can be miniaturized.

Description

technical field [0001] The invention relates to the electrical field, in particular to a serial hybrid electric drive system. Background technique [0002] With the development of electric vehicles, the successful design of the electric drive system means ensuring that the vehicle can obtain the desired performance, such as: acceleration, hill climbing ability, high vehicle speed and high operating efficiency. Traction motors, engines / generators, peak power supplies and electrical couplings are the design components of major concern and their design should basically be studied at the system level in order to ensure that all components work in harmony. [0003] figure 1 Shown is a brief structural diagram of an existing series hybrid electric vehicle drive system, wherein the electric coupling device, namely the motor drive device 4 in the figure, is used to connect three power sources—the engine / generator power supply module 1, the peak The only coupling point where the po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60K6/46
CPCY02T10/62
Inventor 金达锋
Owner 苏州紫荆清远新能源汽车技术有限公司
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