Method and device for operating a hybrid vehicle in the event of a fault in the energy system
一种混合动力、机动车的技术，应用在混合动力车辆、动力装置、通用动力装置的多个不同原动机的布置等方向，达到防止抛锚的效果
Inactive Publication Date: 2014-09-24
ROBERT BOSCH GMBH
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Problems solved by technology
But this has the consequence that the motor is no longer supplied with high voltage and the high voltage battery can no longer be recharged
Method used
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Embodiment Construction
[0026] figure 1 A schematic diagram of a motor vehicle with a parallel hybrid drive is shown. The hybrid drive is formed by an internal combustion engine 1 as a first drive unit and an electric motor 2 as a second drive unit.
[0027] The internal combustion engine 1 is connected via a drive train 3 to a transmission 4 , which in turn leads via a differential 5 to an axle 6 for driving wheels 7 .
[0028] The electric motor 2 is arranged on the shaft 8 of the internal combustion engine 1 and thus also leads to the drive train 3 , which is connected to the transmission 4 . A starter clutch 12 is arranged between the transmission 4 and the drive train 3 , which connects the drive train 3 to the transmission in order to pick up motor vehicle motions of the motor vehicle. The electric motor 2 thus contributes to the drive of the wheels 7 and to the overall torque of the motor vehicle. The electric motor 2 and the internal combustion engine 1 are connected to each other via a se...
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The invention relates to a method for operating a hybrid motor vehicle with a faulty energy system, wherein the hybrid motor vehicle is driven jointly or separately by at least two drive units (1, 2) and at least one electric drive unit (2) charging a high-voltage energy system (11) that supplies electrical energy to a low-voltage energy system (22, 23), wherein the high-voltage voltage is converted into a low-voltage voltage for supplying at least one control unit of a hybrid vehicle units (13, 14, 15, 17, 18) and in the event of a detected fault in the high-voltage energy system (11), the high-voltage energy system is separated from the electric drive unit (2), so that even if the high-voltage energy system has Even in the event of a fault, the energy supply to the control device via the low-voltage energy system is maintained, and after disconnection of the high-voltage energy system (11), the electric drive unit (2) is placed in an In a state of voltage, wherein said non-safety-critical voltage is converted into a low-voltage voltage for supplying at least one control unit (13, 14, 15, 17, 18).
Description
technical field [0001] The invention relates to a method for operating a hybrid motor vehicle in the event of an energy system failure, wherein the hybrid motor vehicle is driven jointly or separately by at least two drive units and at least one electric drive unit charges a high-voltage energy system, A high-voltage energy system supplies electrical energy to a low-voltage energy system, wherein the high-voltage voltage is converted into a low-voltage voltage for supplying at least one control unit of a hybrid motor vehicle, and a device for carrying out the method. Background technique [0002] Motor vehicles with a hybrid drive have an internal combustion engine and usually at least one electric machine as a second drive unit. Thus, during driving operation of the hybrid vehicle, a drive torque can be applied by both drive assemblies. In this case, the electric drive is connected to an energy store which supplies the electric drive with electrical energy. If the interna...
Claims
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IPC IPC(8): B60L3/00B60L11/12B60L50/15B60L50/16
CPCY02T10/7066B60L11/1868Y02T10/7077B60L3/0092Y02T10/7005B60L3/0069B60L3/04Y02T10/6221B60K6/48Y02T10/70B60L11/14B60L50/16B60L58/20Y02T10/62Y02T10/7072B60W10/26B60W20/50B60W50/02B60Y2200/92
Inventor N.施奈德M.莱纳
Owner ROBERT BOSCH GMBH