CN1137527C - 电池的满充电显示方法 - Google Patents

电池的满充电显示方法 Download PDF

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CN1137527C
CN1137527C CNB011021225A CN01102122A CN1137527C CN 1137527 C CN1137527 C CN 1137527C CN B011021225 A CNB011021225 A CN B011021225A CN 01102122 A CN01102122 A CN 01102122A CN 1137527 C CN1137527 C CN 1137527C
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饲手治
国贺俊治
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Abstract

一种电池的满充电显示方法,在电池满充电后,经一段延迟时间后,再显示满充电状态;先设定一预定时间,若电池开始进行充电至充满电为止的充电时间比预定时间短时,采用较长的延迟时间,若电池的充电时间比预定时间长时,采用较短的延迟时间;另一种电池的满充电显示方法,延迟时间与充电时间呈函数关系,充电时间越长的电池延迟时间越短;在显示器上显示所述延迟时间及电池的充满电状态;待充电的电池可为镍-镉电池或镍-氢电池。

Description

电池的满充电显示方法
技术领域
本发明涉及一种电池的充电方法,特别是一种电池的满充电显示方法,本方法主要是在电池充满电时不立即显示满充电状态,而是延迟预定的延迟时间再显示满充电状态。
背景技术
电池在充电过程中温度会上升,尤其是越接近充满电时,或在充满电后,电池温度会急遽升高。因为充电电流并不是完全用在电池的充电上,其中一部分成为热损失,使电池加热。图1显示电池的表面温度随着电池的充电而上升的状态曲线图,图中,在已经充满电时,即使将充电电流切断,电池的表面温度仍会继续上升。因为,电池的内部热量传达至表面时会有一段时间延迟。
如图1所示,电池的表面温度在充满电后仍会继续上升,因此,若在充满电并切断充电电流时,立即进行充满电的显示,则当使用者将已经充满电的电池从充电器上卸下时,碰触到已被加热成高温状态的电池,而会感到热烫,尤其是在增加充电电流,以快速充电时,表面温度变高更加明显。此外,表面露出金属的电池,以及利用薄覆盖层覆盖住表面的电池也可感觉到表面温度很高。碰触到电池会有灼热感。
因此,防止使用者碰触到发烫的电池与快速显示充满电,两件事故无法同时满足。
发明内容
本发明的目的在于提供一种可在电池温度降低的状态下快速显示充满电的一种电池的满充电显示方法。
为达到上述目的,本发明采取如下技术措施:
本发明主要是对电池的满充电状态延迟显示的方法。即可在电池的表面温度降低时,再加以显示。延迟时间可适当选择。
本发明方法具体叙述如下:
本发明的一种电池的满充电显示方法,其特征在于:在检测出电池充满电后经过一预定的延迟时间后,再显示满充电指示;设定一预定时间,电池开始进行充电至充满电为止的充电时间比预定时间短的电池采用较长的延迟时间,充电时间比预定时间长的电池采用较短的延迟时间。
本发明的另一种电池的满充电显示方法,在检测出电池充满电后经过一预定的延迟时间后,再显示满充电指示;该延迟时间与电池充电时间呈函数关系,充电时间越长的电池延迟时间越短。
上述的显示方法中,在显示器上显示所述延迟时间及电池的充满电状态。
上述的显示方法中,待充电的电池为镍-镉电池或镍-氢电池。
附图说明
结合附图及实施例对本发明的结构特征详细说明如下:
图1:电池的充电状态与电池的表面温度的关系曲线图;
图2:本发明电池的满充电显示方法中所使用的充电器的电路框图;
图3:对残存容量不同的电池进行充电时的电池电压与电池温度的变化曲线图;
图4:本发明充满电显示方法实施例的充电时间长短与延迟时间的关系曲线图;
图5、6、7:依照充电时间而改变延迟时间的状态曲线示意图。
具体实施方式
如图2所示,其为本发明方法中所使用的充电器的电路框图;其中,该充电器用于对镍-镉电池及镍-氢电池等二次电池,或是锂离子二次电池等的二次电池充电。充电器包括:电源电路2、将电源电路2连接于电池1的开关元件3、控制开关元件3的充电控制电路4、检测电池温度并将温度信号输入于充电控制电路4的温度检测电路5、检测电池电压并输入充电控制电路4的电压检测电路6以及显示电池1充满电的显示器7。
电源电路2输出可对电池1进行充电的电压及电流。充电电池1为镍-镉电池或镍-氢电池时,电源电路2的输出电流可在0.5至4C,较佳为1至3C,最佳为1至2C,用以对电池1快速充电。
电源电路2可为一个交换电源。交换电源具备有:对100伏特的交流进行整流的整流电路、将整流电路所输出的直流变换交流电的变换电路、将所变换的交流输入于一个变压器初级线圈,变压器将所输入的电压下降至次级线圈的充电电压,对变压器所输出的交流进行整流以变成直流,且经由二极管所构成的整流电路整流。电源电路并不一定必须为交换电源。电源电路亦可为将所输入的100V交流电以变压器降压并进行整流,再将整流过的直流电进行稳压的电路。
开关元件3可为场效应晶体管或普通晶体管等半导体开关元件。开关元件3在电池1充满电之前处于接通状态,以提供给电池1充电电流,当电池1充满电时即切换为切断电流状态。
在安装有电池1时,充电控制电路4可使开关元件3形成接通状态,以开始进行充电。当电池1充满电时,再控制开关元件3形成断路状态,以结束充电。此外,在电池1充满电并使开关元件3形成断路状态后,充电控制电路4经过预定的延迟时间后再输出用以使满充电显示器7显示满充电的信号。
充电控制电路4是以电压检测电路6所输入的电压信号来检测电池1是否充满电。充电控制电路4是以随电池1的形式而不同的方法检测电池1是否充满电。如果充电电池为镍-镉电池或镍-氢电池时,是检测电池电压是否已到达峰值电压,或是检测是否由峰值电压下降ΔV以检测出是否充满电。如果电池为锂离子二次电池时,则以检测电池电压是否已到达设定电压,以检测是否充满电。
充电控制电路4储存有在电池1充满电后所需的延迟时间,充满电状态信号及延迟时间显示在显示器7上。延迟时间并非是固定的,延迟时间可根据电池1开始充电到达充满电为止的充电时间确定的。电池1开始充电至充满电为止的充电时间较短的电池的延迟时间要比充电时间较长的电池延迟时间长。
如图3所示,其为对残存容量不同的电池进行充电时的电池电压与温度的变化曲线图。其显示镍-镉电池或镍-氢电池的电压、温度特性。如该图所示,到达充满电时,电池电压会上升至峰值电压,再继续充电时则由峰值电压下降ΔV。当电池电压到达峰值电压或下降ΔV的电压时,充电控制电路4会判定电池1已经充满电,并使开关元件3断路,以停止充电。
充电电流被切断后,电池的温度会因为馀温而继续上升。充电时间较短的电池,换言之,残存容量大且接近充满电的电池的温度会比残存容量少且充电时间长的电池高。在实际使用状态下,有时会将已经充满电的电池置入充电器,以进行再充电。该电池的残存容量极大,且充满电后的温度上升幅度会特别大。
如图4所示,其为本发明充满电显示方法实施例的充电时间长短与延迟时间的关系曲线图;其中,充电控制电路4是以充电时间的长短确定延迟时间的。充电时间较短的电池由于充满电后的温度上升幅度大,需延长其延迟时间;对充电时间较长的电池,由于充满电后的温度上升幅度小,因此可缩短其延迟时间。
如图5至图7所示,其表示依照充电时间而改变延迟时间的状态曲线,图5表示延迟时间相对于充电时间呈直线变化,但延迟时间相对于充电时间不一定必须设定为直线变化关系,亦可设成各种函数关系。图6表示以一个预定时间为准,根据充电时间较预定时间长或短,确定延迟时间的长短。图7表示依充电时间阶段性地改变延迟时间。由图5及图7可看出,可根据电池残存容量不同,改变延迟时间,以达到理想的状态。如图5至图7所示,充电时间与延迟时间的函数关系储存在充电控制电路4的存储电路(未图示)中。
充电控制电路4在检测出电池1充满电而将开关元件3切换成断路,然后经过所储存的延迟时间后,在输出将充满电状态的信号,显示于显示器7上。显示器7在从充电控制电路4输入充满电信号时,即点亮例如发光二极管(LED),或是改变所点亮的发光二极管的颜色,或是改变发光二极管的亮灭状态等。
本发明的电池的满充电显示方法,是在电池温度下降的状态下一面显示充满电状态,一面将显示充满电的延迟时间快速地显示在显示器上。
与现有技术相比,本发明具有如下效果:
本发明的方法中,主要延长充电时间较短的电池的延迟时间,该种电池由于充电时间短,即使延长其延迟时间,开始充电至显示充满电为止的时间仍然很短,所以使用者不会感到不方便。而且,对充电时间较长的电池采取较短的延迟时间,所以本方法具有结束充电后可较快地显示充满电状态的特点。
上述内容是利用实施例说明本发明的技术特征,并非用于限制本发明的保护范围。

Claims (4)

1、一种电池的满充电显示方法,其特征在于:在检测出电池充满电后经过一预定的延迟时间后,再显示满充电指示;设定一预定时间,电池开始进行充电至充满电为止的充电时间比预定时间短的电池采用较长的延迟时间,充电时间比预定时间长的电池采用较短的延迟时间。
2.一种电池的满充电显示方法,其特征在于,在检测出电池充满电后经过一预定的延迟时间后,再显示满充电指示;该延迟时间与电池充电时间呈函数关系,充电时间越长的电池延迟时间越短。
3.根据权利要求1或2所述的显示方法,其特征在于,在显示器上显示所述延迟时间及电池的充满电状态。
4.根据权利要求1或2所述的显示方法,其特征在于,待充电的电池为镍-镉电池及镍-氢电池中的一种。
CNB011021225A 2000-01-27 2001-01-20 电池的满充电显示方法 Expired - Fee Related CN1137527C (zh)

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US6501247B2 (en) 2002-12-31
FR2804544A1 (fr) 2001-08-03
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TW478192B (en) 2002-03-01
JP4240722B2 (ja) 2009-03-18
FR2804544B1 (fr) 2005-05-27
US20010017533A1 (en) 2001-08-30
DE10103316A1 (de) 2001-08-30
GB2360646A (en) 2001-09-26
CN1312596A (zh) 2001-09-12
KR100494863B1 (ko) 2005-06-14

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