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Energy management method and system for hybrid vehicle

A hybrid vehicle and energy management technology, which is applied in the field of energy management of hybrid vehicles, can solve the problems of over-discharge of power batteries and insufficiency of energy recovery power, and achieve the effect of preventing over-discharge

Active Publication Date: 2018-09-21
GEELY AUTOMOBILE INST NINGBO CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] An object of the present invention is to solve the problem in the prior art that when the hybrid vehicle is coasting or lightly braked, the power of the power battery is low and the power of the high-voltage accessories, that is, the high-voltage electrical components, is high , the energy recovery power cannot meet the technical problem of power battery over-discharge caused by high-voltage accessory power

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  • Energy management method and system for hybrid vehicle
  • Energy management method and system for hybrid vehicle
  • Energy management method and system for hybrid vehicle

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Embodiment Construction

[0034] figure 1 It is a working principle diagram of an engine gearbox of a hybrid vehicle according to an embodiment of the present invention. like figure 1 As shown, the hybrid vehicle includes an engine 1, a dual-clutch gearbox, a motor and a power battery. The dual-clutch gearbox includes a first clutch 2, a second clutch 3, an odd-numbered shaft 4 and an even-numbered shaft 5, and the first clutch 2 is arranged in On the odd-numbered shaft 4, between the engine 1 and the odd-numbered gear 6 arranged on the odd-numbered shaft 4, the second clutch 3 is arranged on the even-numbered shaft 5, and is located between the engine 1 and the even-numbered gear 7 arranged on the even-numbered shaft 5. During this time, the motor is suspended on the even-numbered shaft 5 and is connected to the engine 1 through the second clutch 3 . Wherein, the dual-clutch gearbox may be, for example, a 7DCTH gearbox. Wherein, the odd-numbered gear 6 may include 1st gear, 3rd gear, 5th gear and 7...

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Abstract

The invention provides an energy management method and system for hybrid vehicle. The energy management method comprises the following steps of: acquiring the residual electric quantity value, the energy recovery power and the high-voltage accessory power of the power battery in a downhill sliding working condition of the hybrid vehicle, wherein the energy recovery power is obtained according to the torque and the torsional moment of the motor when the energy is recycled; carrying out energy recovery according to the original energy recovery power when the residual electric quantity value is smaller than the first preset electric quantity value and the energy recovery power is larger than the high-voltage accessory power, wherein the first preset electric quantity value is the electric quantity value corresponding to the power battery when the power generation is forced under the driving mode; carrying out driving power generation while the energy recovery is carried out when the residual electric quantity value is smaller than the first preset electric quantity value, so that the power generation torque of the motor is the sum of the torque of the power generation torque and the energy recovery of the motor. The energy management method can prevent the occurrence of over discharge of the power battery.

Description

technical field [0001] The present invention relates to the technical field of energy management of hybrid vehicles, in particular to a method and system for energy management of hybrid vehicles. Background technique [0002] The drivetrain of a hybrid vehicle may employ an automatic transmission. An automatic transmission refers to a transmission that automatically selects and shifts gears according to engine operating conditions and the speed at which the vehicle is traveling. When the vehicle is coasting, the hybrid vehicle can continue to travel without power from the engine and only by virtue of the vehicle's inertia. At this time, since the power provided by the engine is not required, the engine can save fuel by cutting off the oil. [0003] However, when the hybrid vehicle is coasting or braking lightly, when the power of the power battery is low, and the power of the high-voltage accessories, that is, the high-voltage electrical components, is high, since the tran...

Claims

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Application Information

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IPC IPC(8): B60W20/14B60W10/08B60W10/26B60W10/02B60W10/11
CPCB60W10/02B60W10/08B60W10/11B60W10/26B60W20/14B60W2510/244B60W2710/021B60W2710/083B60W2710/1005B60W2710/248
Inventor 张剑锋陈帅朱家东杨超群李进尹兴起何付同文增友
Owner GEELY AUTOMOBILE INST NINGBO CO LTD
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