Grouping method of organic super-capacitor modules

A technology of supercapacitors and capacitors, applied in capacitors, electrolytic capacitors, circuits, etc., can solve the problems of scrapped modules, over-discharge of cells with different cells, and failure to discharge electricity, etc., to achieve good consistency and improve cycle life. Effect

Inactive Publication Date: 2012-06-20
JIANGSU FRONT NEW ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The consistency of the voltage, resistance and capacity of the cell is the most important factor affecting the cycle performance of the ultracapacitor module, because the voltage, resistance, and capacity determine the length of charge and discharge time and the degree of charge and discharge of a single cell. The main factor is that the difference between the battery cells is too large, which leads to overcharge or overdischarge of the single cell of the module supercapacitor in the process of charging and discharging. After more than 100 cycles, the whole module cannot be charged or discharged. electricity, and eventually the entire module is scrapped

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0009] To make an organic soft-packed supercapacitor with a nominal capacity of 1500F, first select qualified batteries with a capacity of 1050F and above, and then divide the capacity, 1050-1080F is the first grade, 1081-1110F is the second grade, and 1111-1140F is the third grade , 1141~1170 is the fourth gear...Every 30F is divided into one gear until the battery with the largest capacity is the last gear. In each gear, the voltage difference is less than 0.2V and the resistance difference is less than 1 milliohm after being fully charged and left for three days. Group the cells, and assemble the same group of cells into 3 parallel 3 series supercapacitor modules, which is the basis The ultracapacitor module made by the method is tested and cycled more than 10W times.

example 2

[0011] To make an aluminum shell organic supercapacitor with a nominal capacity of 1500F, first select qualified batteries with a capacity of 1050F and above, and then divide the capacity, 1050-1080F is the first level, 1081-1110F is the second level, and 1111-1140F is the third level , 1141~1170 is the fourth gear...Every 30F is divided into one gear until the battery with the largest capacity is the last gear. In each gear, the voltage difference is less than 0.2V and the resistance difference is less than 1 milliohm after being fully charged and put aside for three days. Group the batteries into 6-parallel supercapacitor modules. In addition, 6 qualified supercapacitor cells are randomly selected to make a group of 6 parallel supercapacitor modules. The ultracapacitor modules composed of grouped and random combinations were compared and tested, and the cycle life of grouped cells was increased by more than 10% compared with that of random combinations.

example 3

[0013] To make a soft-pack supercapacitor with a nominal capacity of 2000F, first select qualified batteries with a capacity of 1400F and above, and then divide the capacity. ~1560F is the 4th gear...Every 40F is divided into one gear until the maximum capacity battery is the last gear. In each gear, group according to the standard that the voltage difference is less than 0.2V and the resistance difference is less than 1 milliohm after being fully charged and put aside for three days. The same group of single cells that have been divided into groups are composed of 6 series and 2 parallel supercapacitor modules. 12V / 20Ah lead-acid batteries are connected in parallel, and the overall circuit is discharged with a large current of 120A. Observe the current in the line. In the first 5s of discharge, the output current of the supercapacitor module is greater than 70A. Most of the current is provided, indicating that the supercapacitor module is connected in parallel with the power ...

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Abstract

The invention provides a grouping method of organic super-capacitor modules, relating to a super-capacitor manufacturing method. The grouping method comprises the steps of selecting and grouping capacitor cores before assembling the modules, wherein in the step of selecting the capacitor cores, the capacitor cores which are qualified in capacity, voltage and internal resistance are selected, in the step of grouping the capacitor cores, the capacitor cores which are qualified in capacity, voltage and internal resistance are grouped into a plurality of sets, in the process of assembling, the capacitor cores of the same set are assembled into the modules, in the process of grouping, the capacity difference of the capacitor cores of the same set is not beyond 5% of standard capacity, and, after charging and laying aside the capacitor cores for three days, the voltage difference is not more than 0.2 V, and the internal resistance difference is not beyond 1 m omega. By adopting the scheme disclosed by the invention, the consistency of modular monomer capacitor cores can be ensured, so that the circulation service lives of the super-capacitor modules are further prolonged.

Description

technical field [0001] The invention relates to a method for manufacturing a supercapacitor, in particular to a method for combining organic supercapacitor modules. Background technique [0002] A supercapacitor is an energy storage device that can be charged and discharged quickly. It can be fully charged in a short time, and can be discharged with a large current instantaneously. It has a relatively long cycle life and can be charged and discharged repeatedly. Based on this advantage, supercapacitors have incomparable advantages over other energy storage devices in electric vehicles, wind and solar power generation, etc. As a starting device for electric vehicles, it can provide instantaneous high current when the vehicle starts, and recover braking energy when the vehicle brakes, saving the manufacturing cost of the vehicle battery and reducing the energy consumption of the vehicle during driving. In wind energy and solar energy, since wind energy and solar energy are ba...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/26
CPCY02E60/13
Inventor 杨丛利程传捷
Owner JIANGSU FRONT NEW ENERGY
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