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Method for capacitive load charging

A capacitive load and capacitive technology, applied in the direction of current collectors, electric vehicles, electrical components, etc., can solve the problem of unbalanced power supply and achieve high charging efficiency

Inactive Publication Date: 2010-12-01
SILICON STAR TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the power supply of each power supply is unbalanced, which will lead to First discharge the electricity, if the sub-power supply uses batteries, then the batteries need to be replaced frequently

Method used

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  • Method for capacitive load charging
  • Method for capacitive load charging
  • Method for capacitive load charging

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Embodiment 1: as Image 6 As shown, it contains n power sources, assuming that i is any integer between 2 and n, all power sources e 1 to e n connected in series into a ring, the power supply e 1 and e n There is a switch SS in series between 1 , every two connected sources e i and e i-1 There is a switch SS between the strings i , the capacitive load has a first stage and a second stage, each supply e i the positive pole of the switch through a SP i Connect the first stage of the capacitive load, the power supply e 1 the positive pole of the switch through the SP 1 connected to the first stage of the capacitive load, each switch e i The negative pole of the switch SG through a i Connect the second stage of the capacitive load, the power supply e 1 The negative pole of the switch SG through the 1 The second stage connected to the capacitive load; the charging is divided into n steps, and the power supply e is selected for the first charging 1 , the i-th ch...

Embodiment 2

[0046]Embodiment 2: In addition to charging the capacitive load with a continuous time circuit such as Figure 9 As shown, a switching circuit can also be used to charge a capacitive load such as Figure 8 shown. If put Figure 9 R in 1 regarded as figure 1 middle switch SW 1 internal resistance, then Figure 9 can be equivalent to figure 1 . At the same time, it can be known from the relevant knowledge of the switched capacitor circuit that Figure 8 , if the switch S 1 with S 2 If the non-overlapping closed conduction is fast enough, then S 1 , S 2 and Ce can be equivalent to a resistance, then Figure 8 switched capacitor circuit with Figure 9 The continuous-time circuit of can be equivalent, and it can be deduced that Figure 8 and figure 1 can be equivalent. Based on this, the following introduces a Image 6 deformation, such as Figure 10 shown in the figure It represents the voltage value provided by the power module or the signal provided by the s...

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Abstract

The invention discloses a method for capacitive load charging and aims to provide the method for capacitive load charging which has higher charging efficiency and can use a power source of the same output voltage. A charging circuit comprises n power sources e, provided that i is any integer between 2 and n, all power sources e1 to en are connected in series into a loop, a switch SS is connected in series between every two adjacent power sources, the positive electrode of each power source is connected to capacitive load through a switch SP, and the negative electrode is connected to the capacitive load through a switch SG; the charging is divided into n steps, when e1 is selected for charging at the first time, the switches SP1 and SG1 are switched off; and when the i adjacent power source is selected for charging at the i-th time, the switch SG between the first power negative electrode in the i adjacent power sources and the capacitive load, the switch SP between the last power positive electrode and the capacitive load and the switch SS between the i adjacent power sources are switched off. The invention is suitable for all capacitive load charging circuits.

Description

technical field [0001] The invention relates to a charging method, in particular to a method for charging a capacitive load. Background technique [0002] Charging efficiency is defined as: the ratio of the power obtained on the load to the output power on the power supply. There are many capacitive loads, one of which is supercapacitor, which is a passive device that has been mass-produced in recent years. It is between batteries and ordinary capacitors. The energy storage characteristics of the battery have made amazing progress in terms of large capacity and high withstand voltage. It has become an auxiliary battery storage device, even replacing the battery, and has a long repeated service life. At the same time, it also brings the disadvantage of low efficiency when charging; the capacitive load can also be a general capacitor. When the power supply directly charges the capacitor with the traditional method, a large amount of energy will be consumed in the internal res...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00
Inventor 奚剑雄陈锋
Owner SILICON STAR TECH