Charging and discharging control method and device for automobile electronic double layer super-capacitor

A technology of charge and discharge control and supercapacitor, which is applied in the automotive field, can solve the problems of halving the life of EDLC, affecting the service life, and rising internal temperature, so as to ensure the service life and improve the use efficiency.

Active Publication Date: 2017-05-10
GUANGZHOU AUTOMOBILE GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The life of EDLC is greatly affected by the temperature. Every time the temperature rises by 10°C, the life of EDLC will be halved, and EDLC cannot work beyond the temp

Method used

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  • Charging and discharging control method and device for automobile electronic double layer super-capacitor
  • Charging and discharging control method and device for automobile electronic double layer super-capacitor
  • Charging and discharging control method and device for automobile electronic double layer super-capacitor

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Embodiment 1

[0110] Corresponding to Embodiment 1 of the present invention, Embodiment 2 of the present invention provides a charge and discharge control device for electric double layer supercapacitors for automobiles, including:

[0111] An acquisition unit, configured to acquire voltage and temperature information of the EDLC;

[0112] Judgment unit, used to judge whether the EDLC is to be used continuously or stored for a long time;

[0113] A storage control unit, used to control the EDLC to store at a voltage not exceeding its storage voltage when the judging unit judges that the EDLC is long-term storage;

[0114] The charge and discharge control unit is used to determine whether the EDLC is to be continuously used when the judgment unit judges that the EDLC is to be used, according to the charge and discharge instructions of the vehicle controller, when the EDLC needs to be discharged, it is determined that the EDLC is to be discharged for vehicle startup or for vehicle load discha...

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Abstract

The invention provides a charging and discharging control method and device for an automobile electronic double layer super-capacitor. The control method comprises the steps of 1, obtaining voltage and temperature information of the electronic double layer capacitor (EDLC); 2, judging whether the EDLC continues to be used or is stored for a long time, executing the step 3 if the EDLC is stored for a long time, and executing the step 4 if the EDLC continues to be used; 3, controlling the EDLC to be stored with voltage not larger than the storage voltage; 4, according to a vehicle control unit charging and discharging instruction, determining whether automobile starting discharging or automobile load discharging is performed when the EDLC needs to be discharged, and determining whether constant voltage charging or low current pre-charging or high current rapid charging is performed when the EDLC needs to be charged. The using efficiency of the EDLC can be improved on the premise that the service life of the EDLC is ensured.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a charging and discharging control method and device for electric double layer supercapacitors used in automobiles. Background technique [0002] EDLC (Electric Double Layer Capacitor), an electric double layer supercapacitor, is currently mainly used in the recovery of vehicle braking energy, energy recovery of cranes and other machinery, solar power generation, and UPS emergency power supply. [0003] In the recovery of vehicle braking energy, the requirement for EDLC is to convert as much energy as possible from the braking of the vehicle or the falling of heavy objects into electrical energy, store it in the capacitor, and release the electrical energy in the capacitor when electricity is needed. Other loads are powered, so as to achieve the purpose of energy recovery, energy saving and emission reduction. Because EDLC has low energy density and high power density, in or...

Claims

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Application Information

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IPC IPC(8): B60L11/00B60L1/00
CPCB60L1/00B60L50/40Y02T10/70
Inventor 李剑阮先轸郑淳允梁伟强马彪温京岩
Owner GUANGZHOU AUTOMOBILE GROUP CO LTD
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