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A vehicle-mounted DC auxiliary power supply for an extended-range electric vehicle

An electric vehicle and auxiliary power supply technology, applied in electric vehicle charging technology, electric vehicles, motor vehicles, etc., can solve the problems of inability to meet the requirements of DC power generation and active dynamic control, unsuitable fuel efficiency and emission level, etc. The effect of charging the car, extending the comprehensive driving range, and improving the passenger comfort

Active Publication Date: 2018-05-22
SUZHOU DSM GREEN POWER LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this invention cannot meet the DC power generation and active dynamic control requirements required by electric vehicles, and its fuel efficiency and emission levels are not suitable for automotive applications.

Method used

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  • A vehicle-mounted DC auxiliary power supply for an extended-range electric vehicle
  • A vehicle-mounted DC auxiliary power supply for an extended-range electric vehicle
  • A vehicle-mounted DC auxiliary power supply for an extended-range electric vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Embodiment 1: A vehicle-mounted DC auxiliary power supply for an extended-range electric vehicle, including an engine 9, an engine controller 10, a radiator 11, a muffler 12, an air filter 13, a system controller 14, and a generator 15.

[0035] The system controller 14 includes a power generation and system control unit 3, a power generation drive unit 7, and a remote communication and GPS module 8;

[0036] The system controller 14 is directly connected to the doubly salient generator 15, and is connected to the engine controller 10 and the vehicle controller 6 through two CAN buses respectively, so as to adjust the output power of the doubly salient generator 15 , the output can directly charge the power battery 5 or directly output the DC current and DC voltage to the motor controller 4, and automatically identify the vehicle speed and vehicle power consumption rate of the electric vehicle, determine different power generation control modes, and optimize the power ge...

Embodiment 2

[0039] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the doubly salient pole generator 15 receives the excitation control from the generating drive unit 7, and its generating output is directly connected to the DC power bus, and through the DC power The bus is connected to the power end of the power battery 5 and the motor controller 4 at the same time, and feeds the generated current and DC voltage back to the power generation and system control unit 3 .

[0040] In this embodiment, the three-phase high-frequency power output of the doubly salient generator 15 is rectified and directly outputs a DC current, and the power generation voltage is determined by the power battery 5 .

[0041] In this embodiment, a coupling is used to flexibly connect the engine and the generator to reduce vibration transmission.

Embodiment 3

[0042] Embodiment 3: The difference between this embodiment and Embodiment 1 is that the engine 9 described in this embodiment is directly connected to the engine controller 10, and its 12V power supply comes from the electric vehicle before the switch control of the power generation and system control unit 3 12V constant power supply, when the temperature of the engine 9 is high and enters the shutdown operation, the power generation and system control unit 3 can delay cutting off the power supply of the engine controller 10, so that the engine 9 can continue to run at an idle speed until the temperature drops to the set range .

[0043] The engine 9 described in this embodiment performs automatic speed conversion and stable control through the electronic damper according to the speed command from the CAN bus communication, and simultaneously publishes engine temperature, speed, fuel consumption rate and error codes through the CAN bus communication.

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PUM

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Abstract

The invention relates to a car-mounted direct-current auxiliary power supply for a distance-increasing electric car, which belongs to the technical field of distance-increasing electric car distance-increasing power systems. The car-mounted direct-current auxiliary power supply comprises an engine, a doubly salient direct-current power generator, a power generation driving unit and a power generation / system control unit. A power battery on the distance-increasing electric car is used as an excitation source of the doubly salient power generator, the structure of the power generator is simplified, the power generation / system control unit with a power generator control function is arranged inside, and an engine reverse driving starting and power generation volume initiative control capacity can be realized, so that the whole auxiliary power supply is compact in structure, the system structure is simplified, and the cost is decreased on the basis of improving the reliability. The invention also discloses a control method for adjusting a rotation speed of a power apparatus and managing working noise and vibration of the auxiliary power supply according to the variation of load and car speed, so that the global optimization of power generation, noise, efficiency and emission is realized, and a power-off heat radiation control method greatly prolongs the service life of the power supply.

Description

technical field [0001] The invention relates to a vehicle-mounted DC auxiliary power supply for an extended-range electric vehicle. According to design requirements, the electric vehicle can charge the battery while driving, directly supply power to the motor, or simultaneously charge the battery and directly supply power to the motor. It belongs to the extended-range electric vehicle. The field of power system technology. Background technique [0002] The core technology of the range-extended electric vehicle is the vehicle-mounted range-extended power generation system. A specially designed extended-range power generation system needs to have the characteristics of small size, high system integration, low operating noise, high fuel efficiency, and emission compliance with national standards. The power of the traditional range-extended electric vehicle (such as the Volt of GM or GAC’s Transki) has a relatively large power generation system, which can basically match the ra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L11/12B60L11/18B60L50/15
CPCB60L50/61B60L58/10Y02T10/62Y02T10/70Y02T90/16
Inventor 吴德平
Owner SUZHOU DSM GREEN POWER LTD
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