Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
  • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
  • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
  • B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
  • H02M3/00—Conversion of dc power input into dc power output
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
  • B60Y2400/00—Special features of vehicle units
  • B60Y2400/60—Electric Machines, e.g. motors or generators
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
  • Y02T10/00—Road transport of goods or passengers
  • Y02T10/60—Other road transportation technologies with climate change mitigation effect
  • Y02T10/72—Electric energy management in electromobility

Definitions

• the invention is based on a device and a method with such a device
• Apparatus comprising an electric motor for supporting at least one function and a method for supporting the function by means of the electric motor and a motor vehicle having such an electric motor according to the preamble of the independent claims.
• DE 60304291 A1 is a device with an electric motor in one
• the kinetic energy generated by the electric motor is used, e.g. to move an adjustable component of the motor vehicle.
• the power supply of the electric machine must also be constant.
• the power is supplied by the connection of the electric motor to a system voltage of the motor vehicle.
• the system voltage fluctuates when the internal combustion engine is switched off, since the electric generator of the motor vehicle is therefore also off.
• the electric motor which is part of the device, provides a constant power independent of the system voltage of the motor vehicle. This is achieved by the electric motor for supporting at least one function in a motor vehicle - preferably a car - a DC converter is connected upstream.
• a function includes movable components that are adjusted by the electric motor and may, for example
• the drive train comprises the entire assembly, which transfers the power from the engine to the wheels of the motor vehicle. These include the internal combustion engine, the transmission with its drives and drives and the wheels.
• the electric motor acts as a linear divider and adjusts a component in a linear movement and / or as a radial actuator and adjusts components in an arcuate movement.
• the DC-DC converter outputs an electrical output voltage which is constant and independent of the fluctuations of the system voltage.
• the DC-DC converter is connected to the system voltage of the motor vehicle, and the electric motor is connected to the output voltage of the DC-DC converter.
• the DC-DC converter is connected between the system voltage and the electric motor. Providing the functions with a constant power by the electric motor can thus be ensured even when the internal combustion engine is switched off.
• the electric motor according to the invention is relevant for a sailing mode and a start-stop function of the motor vehicle. Both in the sailing mode and in the start-stop function, the internal combustion engine of the motor vehicle is turned off to save combustion fuel. It also comes to turning off the electric generator of the motor vehicle. Turning the electric generator ON and OFF will cause the system voltage to fluctuate around its setpoint each time. By the DC-DC converter, this fluctuation can be compensated by the output voltage of the
• the DC-DC converter is connected to a vehicle system controller
• the vehicle system control represents the central computing, storage and control unit of the vehicle. With the vehicle system control communicate all the functions of the motor vehicle, so that operating data of the motor vehicle and the
• the electric motor can be supplied by the DC-DC converter at least briefly, for example, an increased voltage, so that its output power is above its rated power.
• the functions of the motor vehicle can be supported or operated as a function of the vehicle system control.
• the function can be supported by the electric motor by the electric motor acts as a servomotor and, for example, in addition to a hydraulic pressure additionally gives off mechanical energy to components of the function.
• the electric motor is an auxiliary unit for an additional function - and in particular no traction drive for locomotion - of the vehicle.
• the electric motor operates the function completely on its own, and not only supports.
• the electric motor can respond optimally to operating situations of the motor vehicle, since the operating data of the vehicle are stored in the vehicle system control. There may be situations when the electric motor needs an increased voltage to keep its constant output
• Such situations are e.g. given at an elevated temperature of the electric motor. It may also occur situations in which the electric motor has to deliver an increased power compared to its rated power. Such a situation arises e.g. in emergency situations like a traffic accident. It is conceivable that in the event of a traffic accident pedestrian protection, e.g. of the
• Windscreen wiper motor is driven with an increased voltage, so that the windshield wiper at an increased speed in a position, e.g. under the
• Hood is moved in which the wiper for accident participants poses no danger.
• an advantageous signal feedback is established starting from the function.
• information about the operating state of the function is transmitted by the signal feedback to the vehicle system control.
• This information may e.g. the temperature of the function exporting components of the motor vehicle. It is also possible information of an acceleration sensor and / or information about the hydraulic pressure from the function to the
• Vehicle control system processes, then a control signal to the
• the electric motor is supplied optimally with respect to the operating situation with voltage.
• the function gets - adapted to the operating situation of the motor vehicle - always provided the right power.
• the power may be higher or lower, or correspond to the rated power of the electric motor.
• the electric motor is an auxiliary unit for an additional function is - and in particular no traction drive for locomotion - of the vehicle.
• the output voltage of the DC-DC converter increases or remains constant when the fluctuation of the system voltage is a decrease.
• the system voltage can also rise above its nominal value, so that the
• FIG. 1 shows a flowchart of the method according to the invention, in which an electric motor with an upstream DC-DC converter is used.
• FIG. 1 a method according to the invention is shown in a flowchart.
• a system voltage 14 is shown which includes a DC-DC converter 16 provided.
• the DC-DC converter 16 with a
• Vehicle system controller 18 is connected, so that the vehicle system controller 18 transmits information to the DC-DC converter 16.
• an electric motor 10 is connected.
• an output voltage 22 of the DC-DC converter 16 supplies the electric motor 10 with electrical energy.
• the electric motor 10 operates a function 12, such as e.g. a pedestrian protection and / or a steering assistance and / or a brake assist and / or a powertrain component and / or a braking function such as ABS and / or autonomous driving and / or autonomous braking by moving movable components of the function 12.
• system voltage 14, DC / DC converter 16, electric motor 10 and the function 12 operated by the electric motor form a timing chain.
• a signal feedback 20 is set up, so that the function 12 and the
• Vehicle system control 18 are connected to each other and each other
• the signal feedback 20 allows information 200 to be transmitted to the vehicle system controller 18 about the operating state of the function 12.
• This information 200 is e.g. Signals of the temperature-dependent components of the function 12, the hydraulic or pneumatic pressure, the force and / or the torque, the current and / or the voltage, and / or other system-relevant information.
• Vehicle system controller 18 it is possible to adjust the DC-DC converter 16 to the acute operating situation of the motor vehicle in which the function 12 is located.
• the vehicle system controller 18 is coupled to the DC-DC converter 16.
• the DC-DC converter 16, the electric machine 10, the function 12 and the vehicle system controller 18 form a control loop, wherein the system voltage 14 is equal to the reference variable of the control loop.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Power Engineering (AREA)
• Electric Propulsion And Braking For Vehicles (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=54251492

Family Applications (1)

Country Status (5)

Family Cites Families (8)

• 2014
  • 2014-10-06 DE DE102014220162.4A patent/DE102014220162A1/de not_active Withdrawn
• 2015
  • 2015-09-23 CN CN201580054084.XA patent/CN107107845A/zh active Pending
  • 2015-09-23 WO PCT/EP2015/071868 patent/WO2016055273A1/de active Application Filing
  • 2015-09-23 KR KR1020177009236A patent/KR20170063681A/ko unknown
  • 2015-09-23 EP EP15774885.6A patent/EP3204265A1/de not_active Withdrawn

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