Driving method and system of tandem type hybrid vehicle

A technology for hybrid vehicles and driving methods, applied in hybrid vehicles, motor vehicles, transportation and packaging, etc., can solve problems such as poor fuel economy, achieve the effects of reducing fuel consumption, improving fuel economy, and reducing energy loss

Active Publication Date: 2009-02-04
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention aims at the disadvantage of poor fuel economy of the driving method of the serial hybrid

Method used

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  • Driving method and system of tandem type hybrid vehicle
  • Driving method and system of tandem type hybrid vehicle
  • Driving method and system of tandem type hybrid vehicle

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Example Embodiment

[0016] Such as figure 1 As shown, the drive system of a series hybrid vehicle includes an engine, a first motor (used as a generator), an inverter, and a battery connected in sequence, and a second motor (used as a motor) connected to the battery through the inverter The second motor is connected to the wheels through a speed change mechanism (not shown) to provide power for the vehicle to drive it to travel. The vehicle controller can control the engine, the first motor, and the second motor at the same time, and control their start and stop. In addition, the battery can also be charged by the power supply.

[0017] The driving method of a series hybrid vehicle provided by the present invention includes: driving a vehicle in a driving state, wherein, when the battery charge is greater than a lower limit threshold and the acceleration is not greater than the upper limit acceleration, the battery supplies power to the motor to drive the motor The vehicle is running and the engine ...

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Abstract

The invention provides a driving method and a system for a series type hybrid power vehicle. The method comprises the steps: a vehicle in running state is driven, wherein, when the carrying capacity of a battery is more than a lower limit threshold value and acceleration is not more than upper limit acceleration, the battery supplies power to a motor to drive the vehicle to run and keeps the motor not working; when the carrying capacity of the battery is less than the lower limit threshold value or the acceleration is more than the upper limit acceleration, the motor is started up to drive a generator to generate electricity. Therefore, power can be applied to the utmost extent so as to reduce the application of fuel and realize the best fuel economy.

Description

Technical field [0001] The present invention relates to the technical field of control of hybrid electric vehicles, and more specifically, to a driving method and system for series hybrid electric vehicles. Background technique [0002] At present, the importance of environmental protection is increasing in the world, and the problem of oil resource shortage is also becoming more and more prominent. The effective solution to this is to restrict the use of vehicles powered by internal combustion engines and switch to those powered by rechargeable batteries. Vehicles are used instead, which makes the technology of using electric vehicles to become the direction of research and development in the industry. At present, due to the limitation of battery technology, pure electric vehicles have the limitation of mileage, while hybrid vehicles can avoid such problems, and the cost is relatively cheap, so it has become the dominant technology in the field of electric drive vehicles. [000...

Claims

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Application Information

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IPC IPC(8): B60W20/00B60W20/10
Inventor 周波祖波龚剑张飞候贻真刘凯
Owner BYD CO LTD
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