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Safety device for preventing overcharging of battery

A safety device, overcharging technology, applied in secondary battery charging/discharging, emergency protection circuit devices, batteries, etc., can solve the problems of unable to block current flow, difficult to ensure safety, etc., to improve marketability and increase energy The effect of density

Active Publication Date: 2015-06-24
HYUNDAI MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, the technique of interrupting the power supply to the relay when the relay is short-circuited cannot stop the flow of current
In emergency situations such as accidents, active type safety structures to prevent overcharging It is difficult to ensure safety when electrical / electronic components fail, for example, when sensors or switches fail

Method used

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  • Safety device for preventing overcharging of battery
  • Safety device for preventing overcharging of battery
  • Safety device for preventing overcharging of battery

Examples

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Embodiment Construction

[0029] It should be understood that the term "vehicle" or "vehicular" or other similar terms as used herein includes motor vehicles in a broad sense, such as including sport utility vehicles (SUVs), buses, trucks, various passenger vehicles including commercial vehicles; boats of various types, seagoing vessels; spacecraft, etc.; and including hybrid vehicles, electric vehicles, plug-in hybrid electric vehicles, hydrogen-powered vehicles and other alternative fuel vehicles (e.g., fuel source non-gasoline energy sources), as referred to herein, a hybrid vehicle is a vehicle that has two or more sources of power, for example, gasoline-powered and electric-powered vehicles.

[0030] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It shou...

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Abstract

A safety device for preventing overcharging of a battery includes: a battery stack including a plurality of cells; a safety circuit connected to two or more cells and provided with an electrical conduction control unit that controls electrical conduction; and a closed circuit disposed between the cells connected to the safety circuit and provided with a switching unit which is switched on or off upon cell swelling, such that when cell swelling occurs, the switching unit is switched on by a pressing force, disabling the electrical conduction control unit of the safety circuit so electrical conduction between the cells is established via the switching unit, and when cell swelling occurs again, the switching unit is switched off, cutting off the electrical conduction between the cells.

Description

technical field [0001] The present invention relates to a safety device for preventing battery overcharging, and more particularly, to a safety device capable of preventing safety accidents due to battery overcharging by interrupting power supply to a battery stack. Background technique [0002] Recently, in order to avoid environmental pollution caused by the use of fossil fuels, there has been a greater demand for environmentally friendly vehicles that operate using electricity, such as hybrid cars. [0003] Environmentally friendly vehicles typically use batteries that store electrical energy. The battery needs to have a large storage capacity so that the vehicle can run on electricity. Therefore, medium or large capacity batteries are used for eco-friendly vehicles. [0004] However, it is difficult to install a medium or high capacity battery in a vehicle because the medium or high capacity battery is generally large and heavy. Therefore, miniaturization of batteries...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/42H01M10/44
CPCH01M10/425H01M2220/20H01M2200/20Y02E60/10H01M50/578H02H7/18H01M50/20
Inventor 崔埈硕林海圭全伦哲徐正勋李容真
Owner HYUNDAI MOTOR CO LTD
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