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Tandem type hybrid electric vehicle energy management method and device and hybrid electric vehicle

A technology for hybrid electric vehicles and energy management, applied in hybrid electric vehicles, motor vehicles, transportation and packaging, etc., can solve the problems of not being able to guarantee the high efficiency and energy saving of the whole vehicle, and not proposing serial hybrid energy management and corresponding control methods

Active Publication Date: 2020-12-04
CHONGQING CHANGAN AUTOMOBILE CO LTD
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  • Application Information

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Problems solved by technology

The invention patent does not control the operating conditions of the engine, cannot guarantee the high efficiency and energy saving of the whole vehicle, does not specify the working mode of the powertrain based on the current state and different working environments, and does not propose specific series hybrid energy management and corresponding control method

Method used

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  • Tandem type hybrid electric vehicle energy management method and device and hybrid electric vehicle
  • Tandem type hybrid electric vehicle energy management method and device and hybrid electric vehicle
  • Tandem type hybrid electric vehicle energy management method and device and hybrid electric vehicle

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Embodiment Construction

[0079] Such as figure 1 It is a structural diagram of a series hybrid powertrain, in which there are mechanical connections 2 between the engine ICE and the generator G, between the drive motor M and the wheels, and wire connections 4 between the generator G, the drive motor M and the power battery B . Since this application mainly emphasizes the energy management and control of the powertrain of hybrid electric vehicles, all relevant power transmissions mentioned below, such as engine power and battery output power, already include the transmission efficiency of generators, driving machines, and power batteries. will not be mentioned again.

[0080] The key of the invention patent is based on figure 1 A hybrid electric vehicle manages the operating state of the powertrain engine and the operating state of the power battery.

[0081] First of all, for the division of the operating area of ​​the engine, in this embodiment, considering the needs of the economy, emission and p...

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Abstract

The invention provides a tandem type hybrid electric vehicle energy management method and device and a hybrid electric vehicle for a tandem type hybrid power system. By means of the characteristics ofa power battery, an engine can be promoted to avoid a high-oil-consumption and high-emission area and only work in an efficient working area; and efficient cleaning of the hybrid power assembly is realized under the condition of considering power, economy and emission performance. The method comprises the following steps: collecting the whole vehicle demand power of a vehicle at the current moment and the state of charge (SOC) of a battery; comparing the required power of the whole vehicle with each power in an engine working MAP to obtain a first comparison result; comparing the SOC of the battery with a state of charge upper limit value SOC_high and a state of charge lower limit value SOC_low corresponding to the economic working area of the engine to obtain a second comparison result;according to the first comparison result and the second comparison result, dividing the working modes of the power assembly of the vehicle; and controlling each power assembly of the vehicle to work according to the divided working modes.

Description

technical field [0001] The invention relates to a control method of a hybrid electric vehicle, in particular to an energy management method and device of a series hybrid electric vehicle and the hybrid electric vehicle. Background technique [0002] In view of the current situation of serious global environmental pollution and increasingly stringent emission regulations, hybrid technology, as an important technology for energy saving and emission reduction, has attracted the attention of the automotive industry, and has been included in the important strategic planning of the world's major car companies in the future. [0003] The search for control invention patents related to series hybrid power that is similar to the patent of this invention is as follows: [0004] 1. A series hybrid electric vehicle energy management control method and device (authorized announcement number: CN106585618B). This patented technology limits the upper limit (point A) and lower limit (point ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W10/06B60W20/00B60W40/00
CPCB60W10/06B60W20/00B60W40/00
Inventor 汤雪林李潜吴学松张晓宇余涛甄涛兴韩宇聂相虹
Owner CHONGQING CHANGAN AUTOMOBILE CO LTD
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