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Automobile 48v energy recovery system and method

An energy recovery, 48V technology, used in electric vehicles, electric braking systems, motor vehicles, etc., can solve the problems of low generator power, difficult fuel consumption improvement, and low battery charging reception capacity.

Active Publication Date: 2022-03-11
CHONGQING CHANGAN AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the power of the generator used in the traditional 12V electrical system is small, and the charging and receiving capacity of the battery is low, resulting in less recovered energy, and it is difficult to improve the fuel consumption by more than 2%.

Method used

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  • Automobile 48v energy recovery system and method
  • Automobile 48v energy recovery system and method
  • Automobile 48v energy recovery system and method

Examples

Experimental program
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Embodiment Construction

[0044] The present invention will be further described below in conjunction with accompanying drawing.

[0045] Such as figure 1 and figure 2 The 48V energy recovery system of a car shown includes a controller, a neutral position sensor 2, a reverse position sensor 3, a clutch switch 4, a brake pedal travel switch 5, an accelerator pedal 6, an ESP 7, and a 48V BSG motor (that is, a belt drive start / power generation integrated motor) 8, 48V lithium battery 9 and DCDC 10.

[0046] In this embodiment, the controller adopts the EFI controller 1, and the DCDC 10 is used to convert 48V electric energy into 12V electric energy. ESP is the electronic stability system of the body.

[0047] Such as figure 1 and figure 2As shown, the EFI controller 1 is connected to the neutral position sensor 2, the reverse gear position sensor 3, the clutch switch 4, the brake pedal travel switch 5, and the accelerator pedal 6 through hard wires, and the EFI controller 1 is connected to the ESP...

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PUM

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Abstract

The invention discloses an automobile 48V energy recovery system and method, including a controller, and a 48V BSG motor connected to the controller, a 48V lithium battery and a DCDC; the 48V BSG motor has two working states of power generation mode and electric mode; When the controller judges that the vehicle is in the accelerating state, it controls the 48V BSG motor to work in the motor mode to provide auxiliary power for the engine. In the running state, the 48V BSG motor is controlled to be in the power generation mode. At this time, the 48V lithium battery is in the charging state, which is used to store the electric energy output by the 48V BSG motor. The invention realizes more efficient braking energy recovery, and at the same time increases the motor power assist function, while improving the acceleration performance of the vehicle, the fuel saving effect is increased to more than 6%.

Description

technical field [0001] The invention belongs to the technical field of automobile electric appliances, and in particular relates to an automobile 48V energy recovery system and method. Background technique [0002] As fuel consumption regulations become more and more stringent, automobile OEMs and suppliers have carried out a lot of research on how to improve energy utilization efficiency and reduce energy loss. During the braking process of traditional vehicles, the kinetic energy of the vehicle is converted into heat energy, which is consumed in the air. [0003] In order to reduce the energy loss during braking, various OEMs have proposed braking energy recovery systems. By adding energy storage devices such as lithium batteries or supercapacitors to traditional models, when the vehicle brakes, the system controls the generator to charge the energy storage device, converts kinetic energy into electrical energy and stores it in the energy storage device, and realizes brak...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L7/10B60K6/26B60W20/14
CPCB60W20/14B60K6/26B60L7/10Y02T10/92
Inventor 王显杨诺杨振石健喻国伦金灿灿郑质
Owner CHONGQING CHANGAN AUTOMOBILE CO LTD