A self-compensating single-bus and double-bus active balancing BSU module and control method

An active equalization and single-bus technology, which is applied in charge equalization circuits, control/regulation systems, electric vehicles, etc., can solve the problems of reducing the accuracy of equalization judgment, slow equalization speed, and excessive equalization, so as to save connection harnesses and connection terminals , Avoid voltage exceeding or insufficient equalization, and ensure the effect of equalization accuracy

Active Publication Date: 2022-04-12
湖南九州节能科技有限公司
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is a secondary transfer of energy during each equalization of this scheme, which leads to large efficiency loss, slow equalization speed (charge first, then discharge, and long consumption time), and has extremely high requirements on the cycle performance and life of the intermediate energy storage unit.
[0007] 4) The loop current is generally large when active equalization is adopted, and both ends of each battery string in the battery module are connected to the BSU through a certain length of insulated wire, so a certain voltage drop will be generated on the loop wire during equalization. And superimposed on the real terminal voltage of the corresponding battery string, and will lead to excessive or insufficient equalization
The conventional equalization scheme does not take effective measures to avoid the impact on the sampling voltage when the voltage drops or rises, so that the reference to the equalization judgment is the distorted voltage data, which ultimately reduces the accuracy of the equalization judgment and causes repeated equalization. under- or over-balanced condition

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
  • A self-compensating single-bus and double-bus active balancing BSU module and control method
  • A self-compensating single-bus and double-bus active balancing BSU module and control method
  • A self-compensating single-bus and double-bus active balancing BSU module and control method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] see figure 1 and Figure 5, single-female single-open balanced acquisition module includes DC / DC isolated boost and constant current source circuit 1, battery module balanced current sampling circuit 2, DC / DC isolated constant current source circuit 3, split-series balanced current sampling circuit 4, polarity Control circuit 5, charging bus and gating circuit 6, battery monitoring circuit 7, battery string and interface circuit 8, intelligent control chip 9, sub-series gating and decoding circuit 10, memory 11, wake-up circuit 12, temperature sampling circuit 13, A battery module temperature control circuit 14 and a communication circuit 15 . The external DC working power supply 16 is the working power supply of each device in the battery management system, the communication bus 17 is the communication line and equipment of each device in the battery management system, and the battery pack temperature control module 18 is a cooling and heating module in the battery ma...

Embodiment 2

[0087] Such as figure 2 , Figure 6 As shown, the single-female double-open balanced acquisition module of the present invention mainly includes: DC / DC isolated boost and constant current source circuit 1, battery module balanced current sampling circuit 2, DC / DC isolated constant current source circuit 3, split-string balanced current sampling Circuit 4, charging bus and strobe circuit 6, voltage monitoring circuit 7, battery string and interface circuit 8, intelligent control chip 9, sub-string strobe decoding circuit 10, memory 11, wake-up circuit 12, temperature sampling circuit 13, battery Module temperature control circuit 14, communication circuit 15. The external DC working power supply 16 is the working power supply of each device in the battery management system, the communication bus 17 is the communication line and equipment of each device in the battery management system, and the battery pack temperature control module 18 is a cooling and heating module in the b...

Embodiment 3

[0094] Such as image 3 , Figure 7 As shown, the dual-female single-open balanced acquisition module of the present invention mainly includes: DC / DC isolated boost and constant current source circuit 1, battery module balanced current sampling circuit 2, DC / DC isolated constant current source circuit 3, split-string balanced current Sampling circuit 4, polarity control circuit 5, charging bus and gating circuit 6, voltage monitoring circuit 7, battery string and interface circuit 8, intelligent control chip 9, sub-string gating decoding circuit 10, memory 11, wake-up circuit 12 , a temperature sampling circuit 13 , a battery module temperature control circuit 14 , a communication circuit 15 , a discharge bus and a gating circuit 19 , and a bridge rectifier circuit 20 . The external DC working power supply 16 is the working power supply of each device in the battery management system, the communication bus 17 is the communication line and equipment of each device in the battery...

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 provides a self-compensating single busbar and double busbar active balancing BSU module and a control method, belonging to the technical field of storage batteries. The BSU module includes a single-female single-open balanced acquisition module, a single-female double-open balanced acquisition module, a double-female single-open balanced acquisition module, and a double-female double-open balanced acquisition module; wherein each circuit module includes two types of direct equalization and intermittent Control mode, that is, single-female single-open or single-female double-open balanced acquisition module direct equalization control mode, double-female single-open or double-female double-open equalized acquisition module direct average control mode, single-female single-open or single Intermittent control mode of double-open balanced acquisition module, double-female single-open or double-female double-open balanced acquisition module intermittent control mode. The invention adopts intelligent control and DC / DC isolation switching power supply technology, can balance a single battery string or a plurality of continuous battery strings in a module unit, and can also use the system working power supply to perform self-balancing among battery modules.

Description

technical field [0001] The invention belongs to the technical field of storage batteries, and in particular relates to a self-compensating single busbar and double busbar active balancing BSU module and a control method. Background technique [0002] The battery can be charged and discharged cyclically, and the device that converts chemical energy or electromagnetic energy to electrical energy, mainly including lead-acid batteries, nickel-based series batteries, lithium-ion batteries, sodium-ion batteries, supercapacitors, flow batteries, etc. However, due to differences in raw materials, production processes, and micro-environments of each battery cell, there are obvious differences in internal resistance, voltage, and capacity in actual use. At the same time, the voltage of the corresponding battery cells is relatively low. Generally, multiple battery cells need to be connected in series and parallel to form a single battery module (module), and then multiple battery modul...

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 Patents(China)
IPC IPC(8): H02J7/00H02M3/335H01M10/42H01M10/44H01M10/613H01M10/615H01M10/635
CPCH02J7/0014H02J7/0016H02J7/0019H02M3/33523H01M10/425H01M10/441H01M10/613H01M10/615H01M10/635H02J2207/20H01M2010/4271Y02E60/10
Inventor 郭清华
Owner 湖南九州节能科技有限公司
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