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A limp control method for a 48v hybrid vehicle

The technology of a hybrid electric vehicle and a control method, which is applied in the field of vehicles, can solve the problems of limited limp driving of hybrid electric vehicles, and achieve the effect of extending the distance

Active Publication Date: 2020-09-22
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, when the 48V battery fails and the engine, 48V motor generator and DCDC are in normal state, it usually stops driving directly, causing the limp driving of the hybrid vehicle to be limited.

Method used

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  • A limp control method for a 48v hybrid vehicle
  • A limp control method for a 48v hybrid vehicle
  • A limp control method for a 48v hybrid vehicle

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Embodiment Construction

[0030] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved more clear, the technical solutions of the present invention will be further described below in conjunction with the drawings and specific implementations. It can be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for ease of description, the drawings only show parts related to the present invention, but not all.

[0031] Such as figure 1 with figure 2 As shown, this embodiment provides a limp control method for a 48V hybrid vehicle. The 48V hybrid vehicle includes a 12V starter, an engine, a 48V motor generator 1, a DCDC6 and a 48V lithium battery 4, where the 12V starter is used for Drive the engine; the engine is the main power source of the 48V hybrid vehicle. When the clutch is engaged, the transmi...

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Abstract

The invention relates to the field of vehicles, and discloses a 48 V hybrid power vehicle limp control method. By adopting the method, when a 48 V lithium battery fails, if a motor can work and a 48 Velectric power generator and a DCDC are normal in state, the 48 V electric power generator is driven to generate power by the motor; and the DCDC continuously supplies power to a 12 C low-voltage electric equipment, so that limp driving of a vehicle is realized, and the limp driving distance is prolonged.

Description

Technical field [0001] The present invention relates to the field of vehicles, in particular to a limp control method for a 48V hybrid vehicle. Background technique [0002] In a 48V hybrid vehicle with P0 configuration (the 48V motor generator is connected to the engine through a belt and is located at the front end of the engine), the engine is used as the main power source of the 48V hybrid vehicle. When the engine fails, the vehicle cannot limp; When the 48V motor generator or DCDC fails, the vehicle cannot go limp for a long time, because the power supply of the 12V electrical accessories is all from the 12V battery at this time. The power of the 12V battery will drop quickly and it needs to be parked in a safe area as soon as possible. [0003] However, when the 48V battery fails and the engine, 48V motor generator and DCDC are in normal state, the driving is usually stopped directly, which causes the limp driving of the hybrid vehicle to be restricted. Summary of the invent...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60W10/06B60W20/10B60W50/029B60R16/03
CPCB60R16/03B60W10/06B60W20/00B60W50/029B60W2710/06
Inventor 郁大嵬宋浩源尹建坤李想赵永强刘元治程健徐家良郭丁伊
Owner CHINA FIRST AUTOMOBILE
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