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A hybrid electric vehicle energy recovery system and recovery method

A technology of hybrid electric vehicles and hybrid power systems, applied in electric vehicles, braking safety systems, electric braking systems, etc. Large energy recovery power and the effect of reducing battery temperature rise

Active Publication Date: 2021-01-19
NINGBO GEELY AUTOMOBILE RES & DEV CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the predicted value is based on the two information of the brake switch and the master cylinder pressure, at the same time, in order to ensure fuel saving efficiency, improve energy recovery efficiency or under certain special working conditions, the battery will heat up rapidly, and at the same time affect the driving experience of the user. , due to the driver's different habits of stepping on the brake pedal, there will be torque fluctuations in the brake pedal travel recognition area

Method used

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  • A hybrid electric vehicle energy recovery system and recovery method
  • A hybrid electric vehicle energy recovery system and recovery method
  • A hybrid electric vehicle energy recovery system and recovery method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] like Figure 1 to Figure 4 Shown: a hybrid electric vehicle energy recovery system, including a main control module 1, a motor control module 2, a battery management system 3, a braking module 4, an information receiving module 8 and a brake pedal travel sensor 6;

[0054] The main control module 1 is used to collect the detection data of the brake pedal stroke sensor 6, and send the information to the motor control module 2 according to the current state information of the motor received by the information receiving module 8 and the internal information of the battery pack. Whether to carry out energy recovery and recovery power demand information instructions, send information instructions to the battery management system 3 whether the main relay of the battery pack is allowed to be opened or closed; Dynamic ability;

[0055] The motor control module 2 diagnoses the current state of the motor in real time, and performs energy recovery or maintains the original state ...

Embodiment 2

[0077] like Figure 1 to Figure 4 Shown: a hybrid electric vehicle energy recovery system, including a main control module 1, a motor control module 2, a battery management system 3, a braking module 4, an information receiving module 8 and a brake pedal travel sensor 6;

[0078] The main control module 1 is used to collect the detection data of the brake pedal stroke sensor 6, and send the information to the motor control module 2 according to the current state information of the motor received by the information receiving module 8 and the internal information of the battery pack. Whether to carry out energy recovery and recovery power demand information instructions, send information instructions to the battery management system 3 whether the main relay of the battery pack is allowed to be opened or closed; Dynamic ability;

[0079] The motor control module 2 diagnoses the current state of the motor in real time, and performs energy recovery or maintains the original state ...

Embodiment 3

[0102] Embodiment 3: the difference with embodiment 1 or embodiment 2 is:

[0103] Specifically, other control modules 5 can be any control module in the above-mentioned technical solutions that can realize the functions in the book, or a third-party control module (such as instrument, multimedia, etc.) Send it to the main control module through the communication module 7.

[0104] Preferably, the communication module 7 is a CAN bus, and the brake pedal stroke sensor 6 is connected to the main control module 1 or other control modules 5 through hard wires.

[0105] In addition, the main control module 1 can also control and jump over other functions in the hybrid system according to driving demands.

[0106] The above-mentioned embodiment 1-embodiment 3 can all be used to monitor the working conditions of sudden braking, and the energy recovery can keep the braking torque corresponding to the current recovered power unchanged, minimizing the impact on the braking process; and...

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Abstract

The invention discloses a hybrid vehicle energy recovery system, the hybrid vehicle energy recovery system comprises a master control module, a motor control module, a battery management system, a brake module, an information receiving module and a brake pedal stroke sensor; the invention further discloses a hybrid vehicle energy recovery method; the arranged brake pedal stroke sensor can monitorthe whole state of a brake pedal, particularly, an idle stroke section can be used to accurately pre-judge the sliding state of a vehicle actually driven by a user, the corresponding recovery power isoptimized, the fuel saving rate of the actual driving condition of the user is improved, the temperature rise of a battery under the high-speed sliding working condition is effectively reduced, the deviation of different feelings on the pedal at the same power, caused by manufacturing or assembling error, is further eliminated; by reducing the energy recovery power in the high-speed sliding process, the calorific value of the battery in the charging process of the high-frequency working condition is reduced, so that the speed of the temperature rise of the battery is reduced, the energy recovery power is increased when a driver intends to brake, and the better oil saving effect is guaranteed.

Description

technical field [0001] The invention relates to the technical field of hybrid vehicles, in particular to an energy recovery system and recovery method for hybrid vehicles. Background technique [0002] With the development of automobile technology and stricter fuel consumption regulations, various forms of hybrid power have emerged as the times require. In many hybrid power systems, energy recovery (including braking energy recovery and coasting energy recovery) is used as a part of each system. An important part of saving fuel. However, while realizing the energy recovery function, it either takes up a lot of cost, or affects the driving experience during energy recovery, and there are also problems such as poor drivability after paying high costs. [0003] The heating principle of the battery is Q=I2RT, R is the inherent property of the battery pack, and T is the uncontrollable driving time. Therefore, the heat generation of the battery pack is reduced by reducing the hig...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L7/10B60T17/22
Inventor 马恩山
Owner NINGBO GEELY AUTOMOBILE RES & DEV CO LTD
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