Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Two-way no-wear equalization circuit based on normal shock DC (Direct Current) /DC convertor

A lossless equalization and converter technology, which is applied in the direction of conversion equipment, circuit devices, battery circuit devices, etc. that have intermediate conversion to AC, can solve the problems of battery energy waste, small equalization current, etc., shorten the equalization time and increase the equalization current , easy-to-achieve effects

Inactive Publication Date: 2013-01-30
力高(山东)新能源技术股份有限公司
View PDF5 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the excess power in the single battery is consumed in vain by the bypass resistor, it causes waste of battery energy, and the discharge of the resistor will generate a lot of heat, so the equalization current of this method is also small

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
  • Two-way no-wear equalization circuit based on normal shock DC (Direct Current) /DC convertor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] Such as figure 1 As shown, a bidirectional lossless equalization circuit of a forward DC / DC converter includes a forward DC / DC converter 1, and the forward DC / DC converter 1 includes a bidirectional forward circuit 2 and an active clamping circuit 3. It also includes a series battery pack 4, a positive and negative switching circuit 5, a matrix switch circuit 6, a voltage acquisition circuit 7 and a vehicle-mounted 24V lead-acid battery 8, and the input terminal of the forward DC / DC converter 1 is connected to the vehicle-mounted 24V lead-acid battery. The acid battery 8 is connected, and its output terminal is connected with SQ1~SQ of the positive and negative electrode switching circuit 5, and one end of the matrix switch element S1~Sn of the matrix switch circuit 6 is connected with the positive and negative electrodes of each battery cell B1~Bn of the battery pack 4 , the other end is connected to SQ1~SQ4 of the positive and negative switching circuit 5, one end of ...

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 two-way no-wear equalization circuit based on a normal shock DC (Direct Current) / DC convertor. The two-way no-wear equalization circuit comprises a battery group, a positive electrode-negative electrode switching circuit, a matrix switch circuit, a voltage collection circuit and a vehicle-mounted 24V lead-acid battery, which are connected in series, wherein the input end of the normal shock DC / DC convertor is connected with the vehicle-mounted 24V lead-acid battery, and the output end of the normal shock DC / DC convertor is connected with the positive electrode-negative electrode switching circuit; one end of the matrix switch circuit is connected with the positive electrode and the negative electrode of each battery monomer of the battery group, and the other end of the matrix switch circuit is connected with the positive electrode-negative electrode switching circuit; and one end of the voltage collection circuit is connected with the corresponding battery monomer of the battery group through a voltage detection flat cable, the other end of the voltage collection circuit is accessed to a main control module, and the control signals of the normal shock DC / DC convertor, the positive electrode-negative electrode switching circuit and the matrix switch are respectively accessed into the main control module. The two-way no-wear equalization circuit provided by the invention has the advantages that the equalization current is high, the equalization time is shortened, the equalization efficiency is improved, the circuit design is simple, the cost is low, the volume is small, and the two-way no-wear equalization circuit is easy to realize.

Description

technical field [0001] The invention designs a bidirectional lossless equalization circuit based on a forward DC / DC converter, which belongs to the technical field of battery protection. Background technique [0002] With the aggravation of energy crisis and environmental pollution, energy-saving and environment-friendly electric vehicles have become a research hotspot. Power lithium batteries have the advantages of high energy density, long cycle life, low automatic discharge rate, and low pollution, and have gradually become the preferred power source for electric vehicles. In order to ensure the safe and long-life operation of the lithium battery, it is necessary to manage the power lithium battery pack correctly and effectively. The detection and control of the performance parameters of the power lithium battery pack become the key factors affecting the performance of electric vehicles. [0003] The three key technologies for the development of electric vehicles are: ba...

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
Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00H02M3/28
Inventor 徐波张殿明张伟余铿钟良
Owner 力高(山东)新能源技术股份有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com