Life safety device with extended shelf life

A life safety device and storage battery technology, which is applied in the direction of circuit devices, battery circuit devices, safety/protection circuits, etc., can solve the problem of device shelf life, inconvenient removal of products, costly and other problems, and achieve the purpose of prolonging the shelf life Effect

Inactive Publication Date: 2015-03-11
WALTER KIDDE PORTABLE EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] While overcurrent protection reduces the amount of current drawn from the battery prior to installation, limited device shelf life remains an issue
It is inconvenient and costly to remove products from stores due to expired shelf life of battery packs

Method used

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  • Life safety device with extended shelf life
  • Life safety device with extended shelf life

Examples

Experimental program
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Effect test

Embodiment Construction

[0012] figure 1 Shown is a block diagram of a built-in life safety device 10, which may be, for example, a smoke alarm, carbon monoxide (CO) alarm, combination smoke and CO alarm, or the like for use in providing alarms to homes or other buildings A device that warns occupants of a potentially life-threatening condition. The flush-mounted life safety device 10 is typically mounted on a wall or ceiling and is connected to an alternating current (AC) power source.

[0013] as in figure 1 As shown, the life safety device includes a low voltage supply 12, a battery assembly 14 (which includes a rechargeable battery 16, a battery charging circuit 18, a booster circuit 20, and a battery protection circuit 22), regulator electronics Device 24 , hazard detector 26 , microcontroller unit (MCU) 28 , sounder circuit 30 and battery test electronics 32 .

[0014] As represented by line input L and neutral input N, the low voltage supply 12 is connected to the AC mains input. The low vo...

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PUM

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Abstract

A life safety device includes a battery assembly with a rechargeable battery. Extended shelf life is achieved by annually initiating an over-discharge protection mode in which a battery protection circuit prevents current flow from the battery. The life safety device remains in the over-discharge protection mode until the device is connected to a charging power source at the time of installation. The battery assembly then exits the protection mode and enters its normal mode of operation.

Description

technical field [0001] The present invention relates to a life safety device having a battery assembly with a rechargeable battery. Background technique [0002] Flush mount life safety devices are used in residential and commercial buildings to warn occupants of hazards such as fire or the accumulation of unsafe gases such as carbon monoxide. Life safety devices are usually installed on the walls or ceilings of buildings. Typically, flush-mounted life safety devices are powered by battery packs that include rechargeable batteries. The life safety device is connected to an AC power source that provides current for charging the rechargeable battery. [0003] Rechargeable batteries are part of battery assemblies that are installed in life safety devices at the factory. Once the battery assembly is connected to the circuit of the life safety device, power can be drawn from the battery before the device is put into service. Under those conditions, the life safety device is n...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00H01M10/44H02H7/18
CPCH01M10/48H02J7/0031H01M10/448H02J2007/004H02J7/00306Y02E60/10
Inventor M.J.布赫霍尔茨T.西尔弗
Owner WALTER KIDDE PORTABLE EQUIP
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