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Power matching method and system for plug-in hybrid power vehicle

A hybrid power and power matching technology, which is applied in the direction of hybrid electric vehicles, electric vehicles, motor vehicles, etc., can solve the problem of vehicle power decline, failure to meet vehicle power requirements, and range extender input power cannot meet driving power requirements and other issues to achieve the effect of a large battery life advantage

Pending Publication Date: 2017-06-13
风度(常州)汽车研发院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The above method needs to convert the mechanical energy into the electrical energy of the battery pack first, and then the battery pack outputs the electric energy required by the wheels. A part of the energy will be lost during the conversion process of input and output to the battery pack.
[0004] When the remaining power of the battery pack is close to the charging threshold, the power of the vehicle is weak and cannot meet the power demand of the vehicle well.
[0005] When the vehicle continues to drive at high power, the input power of the range extender cannot meet the driving power demand, and the remaining power of the battery pack continues to decrease, the advantage of the extended range is weakened, and the power of the vehicle will show a cliff-like decline at this time

Method used

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  • Power matching method and system for plug-in hybrid power vehicle

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Embodiment 1

[0032] A power matching method for a plug-in hybrid vehicle described in a preferred embodiment of the present invention, the method utilizes figure 1 The power matching system of a plug-in hybrid electric vehicle, the system includes a range extender and a battery pack that output vehicle power, and the power output ends of the range extender and the battery pack are connected to the power input end of the drive motor, The driving motor drives the drive shaft of the wheel through the transmission device; wherein the range extender includes a generator for outputting electricity and an engine that provides energy for the generator, and the engine is connected to a fuel tank; the range extender The power output end is also connected with the charging interface of the battery pack, and the range extender charges the battery pack.

[0033] The method specifically includes: acquiring the driving condition of the vehicle,

[0034] If the vehicle is in the first driving condition, ...

Embodiment 2

[0042] The power matching method of the plug-in hybrid vehicle in this embodiment, on the basis of Embodiment 1, when the vehicle is in the first driving condition, and the remaining power of the battery pack is less than the first threshold, the output power of the range extender is increased so that It can simultaneously provide power and electric energy for the driving motor and charge the battery pack until the remaining power of the battery pack is greater than or equal to the second threshold. In this working condition, the power quantity required by the vehicle is first met.

Embodiment 3

[0044] The power matching method of the plug-in hybrid vehicle in this embodiment is based on Embodiment 1, and the vehicle uses the range extender and the battery pack to jointly output the power required by the vehicle under the second driving condition. Specifically, the range extender works at the maximum output power, and the remaining required power is provided by the battery pack.

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Abstract

The invention relates to a power matching method and system for a plug-in hybrid power vehicle. A power output line is that a range extender mainly provides energy for a driving motor for a vehicle to travel under normal operating conditions. When the driving motor requires high-power output, the range extender and a battery pack input energy to the driving motor together. The power matching is that the maximal output power of the range extender meets the requirements on the power required for the highest stable vehicle speed of the vehicle and the power of other energy consumption accessories (such as an air conditioning compressor) of the vehicle. The sum of the maximal output power of the range extender and the maximal output power of the battery pack is required to meet the requirement of the maximal required power of the driving motor and the power of the other energy consumption accessories (such as the air conditioning compressor) of the vehicle.

Description

technical field [0001] The invention relates to the technical field of power of a plug-in hybrid vehicle, in particular to a power matching method and system for a plug-in hybrid vehicle. Background technique [0002] At present, the power matching method of most plug-in hybrid electric vehicles is that the battery pack directly provides energy to the drive motor, and the drive motor outputs power to the drive shaft after connecting to the transmission device. When the SOC of the battery pack drops to a certain set value At this time, start the range extender (the integration of the engine and the generator, the range extender consumes fuel to drive the generator to generate electricity, and then outputs electric energy) to charge the battery pack. [0003] The above method needs to convert the mechanical energy into the electrical energy of the battery pack first, and then the battery pack outputs the electric energy required by the wheels, and part of the energy will be lo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L11/02B60L11/12B60L50/10B60L50/15
CPCB60L50/10B60L50/61B60L2240/54Y02T10/62Y02T10/7072Y02T10/70
Inventor 李常镱伍战平马世友陈艳艳王海涛蔡瑀赖赣明王德理鲁涛孙福凤马建生岳淑彪邹雪芹杨磊鲁骏石永泉任云强宋博周正问妮娜
Owner 风度(常州)汽车研发院有限公司