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DC-DC conversion control system and control method of the mixed driven car

A hybrid electric vehicle, conversion control technology, applied in control/regulation systems, electric vehicles, program control in sequence/logic controllers, etc., can solve the problem of unfavorable changes in control methods and controllability, and the size of DC-DC converters Large and undiscovered solutions and other problems, to achieve the effect of improving energy utilization, high conversion efficiency, and high reliability

Inactive Publication Date: 2007-07-11
CHERY AUTOMOBILE CO LTD
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

The air-cooled DC-DC converter has the disadvantages of large size and difficult installation; after the independent control is designed, it is not suitable to change the control method and the disadvantages of poor controllability and upgradeability
Extensive searches for the above problems have found no relevant solutions

Method used

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  • DC-DC conversion control system and control method of the mixed driven car
  • DC-DC conversion control system and control method of the mixed driven car

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Embodiment Construction

[0020] As shown in Figure 1, the DC-DC conversion system in the present invention can be based on the state of charge of the power battery, the operating state of the engine, the load state of the low-voltage electrical system, the state of charge of the low-voltage small battery, and the DC-DC converter itself. Temperature and other information to intelligently select the working state of the DC-DC converter. It mainly completes the functions of supplying power from the high-voltage power system to the low-voltage vehicle electrical system, charging the low-voltage small battery, adjusting the low-voltage electrical system to a specific voltage value, and switching control of the DC-DC conversion system. The DC-DC converter makes full use of the resources of the hybrid vehicle itself to realize its functions. In terms of mechanical structure, it shares the water cooling system with the hybrid vehicle controller; in terms of control realization, the vehicle controller and DC-DC...

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Abstract

This invention relates to one mixture dynamic mobile DC to DC conversion control system and its method, which comprises high voltage dynamic power system and low voltage mobile electrical system and is characterized by the following parts: converter is connected to controller through one set of signal wire to combine converter and controller to fulfill control and execution, wherein, the converter determines the its work status according to low voltage electrical system and high voltage battery status and environment temperature and itself factors.

Description

Technical field: [0001] The invention relates to a DC-DC (direct current-direct current) conversion method of a hybrid electric vehicle, in particular to a DC-DC conversion control system and a control method for a high-voltage power supply system of a hybrid electric vehicle to supply power to a low-voltage electrical system. Background technique: [0002] At present, high-efficiency, energy-saving, and environmentally friendly clean cars have become a new trend in the development of the automotive industry. For this reason, hybrid electric vehicle (Hybrid Electric Vehicle, abbreviated as HEV) has attracted more and more attention due to its combination of low emission advantages of electric vehicles and high specific energy advantages of internal combustion engine vehicles, and has become one of the new vehicles being developed at the current stage . The so-called hybrid electric vehicle is exactly that low-power engine and auxiliary power source (such as: electric motor)...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00H02M3/00G05B19/04B60L11/00B60L11/18B60L1/00
CPCY02T10/7005Y02T10/7216Y02T10/92Y02T90/127Y02T10/70Y02T10/72
Inventor 王野
Owner CHERY AUTOMOBILE CO LTD
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