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Multi-power-supply system containing super capacitor and control method thereof

A supercapacitor and supercapacitor technology, applied in current collectors, charge balance circuits, battery circuit devices, etc., can solve the problems of high cost and low system efficiency, and achieve the effect of improving service life, improving system efficiency, and improving output response.

Active Publication Date: 2020-04-10
CHINA FIRST AUTOMOBILE
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a multi-power supply system containing supercapacitors and a control method. Aiming at the problems of high cost and low system efficiency of supercapacitors in existing multi-power supply systems, the parameters of supercapacitors are determined by energy, cost and volume. The power state selects the working mode of multiple power sources, reasonably allocates the energy and power input or output of supercapacitors and batteries, and manages battery balance

Method used

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Embodiment Construction

[0022] The invention provides a multi-power supply system containing a supercapacitor, including a supercapacitor, a DC / DC converter, a battery and a system control unit. The system control unit includes a charge and discharge module, an equalization module, an acquisition module and a microprocessor module.

[0023]In the embodiment of the present invention, the balance module 5 is electrically connected to the supercapacitor 1 and the battery 3, and the battery 3 and the DC / DC converter 3 are electrically connected to the charging and discharging module 4; the DC / DC converter 2 is connected to the super capacitor The capacitor 1 is connected; the acquisition module 6 is communicated with the supercapacitor 1 and the battery 3; the microprocessor module 7 is communicated with the DC / DC converter 2, the acquisition module 6 and the equalization module 5. Multi-power system with motor and load structure diagram as shown in figure 1 As shown, the charging and discharging module ...

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Abstract

The invention belongs to the technical field of batteries, and particularly relates to a multi-power-supply system containing a super capacitor and a control method thereof. The system comprises a super capacitor, a DC / DC converter, a battery and a system control unit, the system control unit comprises an acquisition module, a charging and discharging module, a microprocessor module and an equalization module. According to the multi-power-supply system containing the super capacitor, the parameters of the super capacitor are determined through energy, cost and volume, a multi-power-supply working mode is selected according to the state of charge, input or output of energy and power of the super capacitor and the battery is reasonably distributed, impact damage of a large current to the battery is effectively relieved, the service life of the battery is prolonged, output response is improved, system efficiency is improved, and battery equalization management is achieved.

Description

technical field [0001] The invention belongs to the technical field of batteries, and specifically relates to a multi-power supply system containing supercapacitors and a control method. Background technique [0002] As the electrification of vehicles progresses, the role of batteries as electrical energy storage is becoming more and more important. When the battery meets the high power demand of the vehicle and the frequent start and stop, it bears the impact of the ever-changing transient current, and the excessive charge and discharge current will cause great damage to the battery. In view of this, people began to study the system composed of multiple power sources with different energy and power characteristics, especially the multi-power system containing supercapacitors. Based on the characteristics of high energy density of batteries and high power density of supercapacitors, in a multi-power system, the rational distribution of power between batteries and supercapac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00H02J7/34
CPCH02J7/0014H02J7/345
Inventor 荣常如赵子亮王君君付磊张昶陈永胜许立超王书洋任毅窦智
Owner CHINA FIRST AUTOMOBILE
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