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

A battery pack undervoltage protection circuit

A technology for undervoltage protection and battery packs, applied in battery circuit devices, emergency protection circuit devices, safety/protection battery circuits, etc., can solve problems such as increased costs and reduced utilization of battery pack storage energy, and achieve the goal of avoiding injury accidents Effect

Inactive Publication Date: 2020-10-02
WINTEK ELECTRONICS TECH
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the voltage values ​​of each battery pack are inconsistent and the difference is too large, it is possible that the BMS will perform under-voltage protection before the main board control system. If you set the under-voltage protection voltage>>n*over-discharge protection voltage, the priority protection of the BMS can be greatly reduced. probability, but the storage energy utilization rate of the battery pack will be greatly reduced, increasing the cost of the product

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 battery pack undervoltage protection circuit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only the technical solutions of the present invention. Some, but not all, embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present invention.

[0023] Combine below figure 1 The embodiments of the present invention are further described in detail. figure 1 It is a circuit diagram of a battery pack undervoltage protection circuit provided in Embodiment 1 of the present invention, as shown in figure 1 As shown, in some preferred embodiments, the battery pack undervoltage protection circuit inc...

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 an under-voltage protection circuit of a battery pack. The under-voltage protection circuit comprises a main board control system, a battery management system and a battery pack. The battery pack is a battery array formed by series connection of a preset number of battery groups. The battery management system is used for detecting the voltages of each battery group according a preset period; and when the voltage of the battery group is lower than or equal to a preset over-discharging protection voltage, the output of the battery pack is turned off. The main board control system is used for obtaining a lowest voltage in the preset number of battery groups from the battery management system; and when the lowest voltage is lower than or equal to a preset under-voltage protection voltage, the main board control system is turned off in a soft stop manner. The preset under-voltage protection voltage is lower than the preset over-discharging protection voltage. According to the under-voltage protection circuit, the stored energy of the battery pack can be utilized fully and the under-voltage protection function of the main board control system is superior to the battery management system, so that any injury accident caused by sudden outage of the battery management system can be avoided.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a battery pack undervoltage protection circuit. Background technique [0002] When electric sports equipment, such as a balance car, is in use, its energy source is the battery pack. During the process of providing energy, the voltage of the battery pack will gradually decrease. When the voltage drops to the preset over-discharge protection voltage, the output needs to be turned off. Protect the battery itself, because excessive discharge will cause permanent damage to the battery, this part of the work is done by the battery management system (Battery Management System, BMS). However, if the battery pack suddenly loses power and the main board control system loses the energy source, the sports equipment will stop suddenly, and the user may lose balance, resulting in falling and injury. In order to avoid this situation, general electric sports equipment adopts a two-level prot...

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): H02H7/18H02J7/00
CPCH02H7/18H02J7/0026
Inventor 钟乃昌朱曲波
Owner WINTEK ELECTRONICS TECH
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