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Charging discharging fast equalizing apparatus for accumulator set or capacitor set

A technology of supercapacitors and battery packs, applied in battery circuit devices, circuit devices, current collectors, etc., can solve problems such as slow equalization speed

Inactive Publication Date: 2009-02-04
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of slow equalization speed of the existing equalization device, the present invention effectively avoids the disadvantages of overcharging or overdischarging of individual cells in the charging and discharging process, and proposes a fast charging and discharging equalizing device for a battery pack or a supercapacitor pack

Method used

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  • Charging discharging fast equalizing apparatus for accumulator set or capacitor set
  • Charging discharging fast equalizing apparatus for accumulator set or capacitor set
  • Charging discharging fast equalizing apparatus for accumulator set or capacitor set

Examples

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specific Embodiment approach 1

[0008] Specific implementation mode one: combine figure 1 or figure 2 Describe this embodiment, this embodiment is made up of buck-boost conversion type flying capacitor equalizer 1 and equalization controller 2; Digital output converter 25, decoder 26, photoelectric relay group 27 and relay array 28 are composed. The voltage signal output end of the current sensor 23 is connected to the input end of the first AD converter of the single-chip microcomputer 21, and the two-way pulse width modulation signal output end of the single-chip microcomputer 21 is connected to the two-way pulse signal input end of the MOSFET driver 24, and the two-way pulse signal input ends of the MOSFET driver 24 The control signal output end of the circuit is connected to the controlled signal input end of the buck-boost conversion type flying capacitor equalizer 1, and the two energy input and output ends of the buck-boost conversion type flying capacitor equalizer 1 pass through the n number of re...

specific Embodiment approach 2

[0009] Specific implementation mode two: combination figure 2 Describe this embodiment, the difference between this embodiment and specific embodiment 1 is that the buck-boost conversion type flying capacitor equalizer 1 is composed of a first MOSFET switch tube T 1 , the second MOSFET switch tube T 2 , the first freewheeling diode D 1 , the second freewheeling diode D 2 , inductance L and flying capacitance C F Composition; the first MOSFET switch tube T 1 gate and the second MOSFET switch T 2 The gate is the controlled signal input end of the buck-boost conversion type flying capacitor equalizer 1, and the two control signal output ends of the MOSFET driver 24 are respectively connected to the first MOSFET switch tube T 1 gate and the second MOSFET switch T 2 gate of the first MOSFET switch T 1 The source, the second MOSFET switch tube T 2 The drain is connected to one end of the inductor L, the first MOSFET switch tube T 1 The drain is an energy input and output t...

specific Embodiment approach 3

[0010] Specific implementation mode three: combination figure 1 Illustrate this embodiment, the difference between this embodiment and the specific embodiment is that CAN driver 29 is added, the data receiving and sending ends of CAN driver 29 are respectively connected with the CAN data receiving and sending ends of single-chip microcomputer 21, and the CAN communication interface of CAN driver 29 communicates with the outside The CAN communication interface of the device is connected. Other compositions and connection methods are the same as those in Embodiment 1.

[0011] working principle:

[0012] After the system is started, it first detects the voltage of the battery pack or supercapacitor pack, the voltage of the flying capacitor and the charging and discharging current. That is, the equalization operation is started.

[0013] with C 1 and Cn Between the voltage balance as an example, let C 1 The voltage is the highest voltage, C n The voltage is the lowest volta...

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Abstract

Disclosed is a fast balancing device for electric charge and discharge of a storage battery and a super capacitor bank. The invention relates to electric charge and discharge monitoring area of the storage battery and the super capacitor bank. The device solves the problem of slow balancing speed of an existing balancing device thus effectively avoids overcharge or overdischarge of individual monomer during the electric charge and discharge process. A single chip microcomputer of a balancing controller is in connection with a charge and discharge monomer and a voltage measuring and conditioning circuit of a flight capacitor, of which the voltage controls the photoelectric relay to gate through a decoder, and the single chip microcomputer is also in connection with a current sensor which is used to detect charge and discharge current, and an MOSFET drive which is used to control a buck-boost transform type flight capacitance equalizer and a digital output translator which is used to control the relay array, in which the relay array is used to control the switching of the equalizer and the charge and discharge monomer, and the MOSFET drive is controlled by the single chip microcomputer to control the quantity of the equalizing current. The device achieves the aims of protecting charge and discharge monomer and prolonging service life by meeting the demand for the balancing speed from high current charge and discharge.

Description

technical field [0001] The invention relates to the field of charge and discharge monitoring of storage battery packs or supercapacitor packs. Background technique [0002] Due to the two major problems of environmental pollution and energy crisis, countries around the world have extensively carried out the research and development of electric vehicles, and the battery is the bottleneck of the development of electric vehicles. The main reason is that the specific energy and specific power of the battery cannot meet the requirements of electric vehicles at the same time. In addition, The cycle life of the battery is also an important issue. The former awaits the advent of new batteries, while the latter - the life of the battery can be extended through the monitoring and management of the battery charge and discharge process. Overcharge or overdischarge during battery charging and discharging is the main cause of shortened battery life or direct damage. Charge and discharge ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00H02J15/00
Inventor 逯仁贵朱春波武国良
Owner HARBIN INST OF TECH