Control circuit for parallel charging of multiple chargers

A technology for controlling circuits and chargers, applied to battery circuit devices, current collectors, circuit devices, etc., can solve problems such as uneven power distribution, damage to chargers, and reduced duty cycle of PWM control circuits to reduce charging power , The effect of reducing the output voltage

Pending Publication Date: 2022-07-01
CHONGQING SENCI ELECTRIC MACHINERY
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problem in the prior art that multiple chargers are directly connected in parallel to charge, the uneven power distribution will lead to damage to the chargers. The present invention proposes a control circuit for parallel charging of multiple chargers of the same specification. The n The input voltage of two parallel chargers is compared

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Control circuit for parallel charging of multiple chargers

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0021] The present invention will be further described in detail below with reference to the examples and specific implementation manners. However, it should not be construed that the scope of the above-mentioned subject matter of the present invention is limited to the following embodiments, and all technologies realized based on the content of the present invention belong to the scope of the present invention.

[0022] In the description of the present invention, it should be understood that the terms "portrait", "horizontal", "upper", "lower", "front", "rear", "left", "right", "vertical", The orientations or positional relationships indicated by "horizontal", "top", "bottom", "inside", "outside", etc. are based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than An indication or implication that the referred device or element mu...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a control circuit for parallel charging of multiple chargers. The control circuit comprises n chargers connected in parallel, a voltage comparison circuit, a PWM control circuit, a charging output circuit and a constant voltage sampling circuit. The negative electrode of the charger is grounded, the positive electrode of the charger is connected with the input end of the voltage comparison circuit and the voltage input end of the charging output circuit, the output end of the voltage comparison circuit is connected with the input end of the PWM control circuit, and the output end of the PWM control circuit is connected with the signal input end of the charging output circuit. The output end of the charging output circuit is connected in parallel with the constant voltage sampling circuit and then outputs voltage to the rechargeable battery. The voltage comparison circuit compares the input voltage of the charger with a set value, and when the output and input are smaller than the set value, the duty ratio of the PWM circuit is controlled to be reduced, so that the charging output voltage is reduced, the output voltage of the charger is stabilized at the set value all the time, and the output current is output according to the constant current value of each charger. Therefore, the output ports of the plurality of chargers are connected in parallel for charging.

Description

technical field [0001] The invention relates to the technical field of electronic circuits, in particular to a control circuit for parallel charging of multiple chargers. Background technique [0002] Products need to be diversified, such as energy storage power charging products, according to the different needs of different customers, for different charging speeds, charging times and usage scenarios, choose chargers. Users can purchase several chargers in the form of accessories according to their needs to quickly complete charging, and multiple chargers can be used in parallel at the same time. If there is no related control circuit and the chargers of the same specification are used directly in parallel, there will be uneven power distribution, which will damage the chargers. SUMMARY OF THE INVENTION [0003] Aiming at the problem of uneven power distribution and damage to the chargers caused by the direct parallel charging of multiple chargers in the prior art, the p...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H02J7/00
CPCH02J7/007H02J2207/20H02J2207/40
Inventor 艾纯侯春明
Owner CHONGQING SENCI ELECTRIC MACHINERY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap