CN110896159A - 电子设备及电子设备处理方法 - Google Patents

电子设备及电子设备处理方法 Download PDF

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CN110896159A
CN110896159A CN201910861688.5A CN201910861688A CN110896159A CN 110896159 A CN110896159 A CN 110896159A CN 201910861688 A CN201910861688 A CN 201910861688A CN 110896159 A CN110896159 A CN 110896159A
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power supply
electronic device
secondary battery
emergency notification
processing unit
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成田幸一
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Alpine Electronics Inc
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Alpine Electronics Inc
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    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0007Measures or means for preventing or attenuating collisions
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    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/42Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/4285Testing apparatus
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0092Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption with use of redundant elements for safety purposes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/03Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
    • B60R16/033Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for characterised by the use of electrical cells or batteries
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R21/013Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01DMEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D21/00Measuring or testing not otherwise provided for
    • G01D21/02Measuring two or more variables by means not covered by a single other subclass
    • GPHYSICS
    • G07CHECKING-DEVICES
    • G07CTIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
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    • GPHYSICS
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    • G08G1/205Indicating the location of the monitored vehicles as destination, e.g. accidents, stolen, rental
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007Regulation of charging or discharging current or voltage
    • H02J7/00712Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
    • H02J7/007182Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
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    • H02J7/007Regulation of charging or discharging current or voltage
    • H02J7/007188Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters
    • H02J7/007192Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters in response to temperature
    • H02J7/007194Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters in response to temperature of the battery
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    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
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    • H04B1/38Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/3822Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving specially adapted for use in vehicles
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    • H04W4/44Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for communication between vehicles and infrastructures, e.g. vehicle-to-cloud [V2C] or vehicle-to-home [V2H]
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    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02Power saving arrangements
    • H04W52/0209Power saving arrangements in terminal devices
    • H04W52/0261Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level
    • H04W52/0274Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level by switching on or off the equipment or parts thereof
    • H04W52/0277Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level by switching on or off the equipment or parts thereof according to available power supply, e.g. switching off when a low battery condition is detected
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02Power saving arrangements
    • H04W52/0209Power saving arrangements in terminal devices
    • H04W52/0261Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level
    • H04W52/0296Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level switching to a backup power supply
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00Control parameters of input or output; Target parameters
    • B60L2240/40Drive Train control parameters
    • B60L2240/54Drive Train control parameters related to batteries
    • B60L2240/545Temperature
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00Control parameters of input or output; Target parameters
    • B60L2240/60Navigation input
    • B60L2240/66Ambient conditions
    • B60L2240/662Temperature
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00Control parameters of input or output; Target parameters
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R2021/01204Actuation parameters of safety arrangents
    • B60R2021/01252Devices other than bags
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
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    • Y02D30/70Reducing energy consumption in communication networks in wireless communication networks
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract

提供不使得结构大型化,就能够将基于二次电池的动作时间变长的电子设备及电子设备处理方法。电子设备(100)将二次电池(122)作为电源而进行紧急通报动作,具备:对二次电池(122)的温度进行检测的温度传感器(124);在由温度传感器(124)检测到的温度与规定值相比为低温状态时将紧急通报动作间歇地实施的间歇紧急通报处理部(134);以及在由温度传感器(124)检测到的温度比规定值高时将紧急通报动作连续地实施的连续紧急通报处理部(132)。

Description

电子设备及电子设备处理方法
技术领域
本发明涉及被搭载于车辆等而进行紧急通报等的电子设备及电子设备处理方法。
背景技术
在最近,搭载了始终连接于互联网的功能的被称为互联汽车(connected car)的车辆得到实用,为了进行通信处理而使用TCU(远程信息控制单元(Telematics controlunit))。该TCU内置GPS接收机,将车辆的位置信息、车辆信息等发送至云服务器,从而在事故产生时发出紧急通报,在车辆产生问题时进行支援等。
然而,有从车载电池向TCU供应动作电力的电源供应线在事故产生时切断或连接部位脱离的情况。为了在产生这样的状况时也继续进行救急通报等动作,在TCU中具备内置二次电池。作为内置二次电池,已知锂离子电池、镍氢电池等,但在TCU的情况下使用镍氢电池的情况较多。
一般来说,这些二次电池具有在低温时内部阻抗变大的特性,例如在-30℃等低温时,即使在电源供应线产生异常时动作电源从车载电池向内置二次电池切换后开始紧急通报等的动作,输出电压也剧烈地降低,不能继续进行紧急通报等的动作。
作为用于防止低温时二次电池导致电子设备的驱动时间缩短的现有技术,已知在检测到低温状态时,对加热器进行通电而抬高二次电池的温度,改善二次电池的放电特性的方法(例如,参照专利文献1、2)。
现有技术文献
专利文献
专利文献1:(日本)特开平10-285813号公报
专利文献2:(日本)特开2013-37672号公报
发明内容
发明要解决的课题
然而,在上述的专利文献1、2中公开的方法中,对加热器进行通电而抬高二次电池的温度,但在作为该加热器的电源而使用相同的二次电池的情况下,需要使用较大的容量的二次电池,并且需要具备加热器,有结构大型化这样的问题。特别是,在电源供应线的连接被维持的情况或除了极端的低温时以外的情况下,不产生这种问题,所以如果仅考虑低温时的应对,就将二次电池的容量变大或具备加热器,则大多情况下是无用的,从降低成本的观点来看不优选。
本发明是鉴于这样的问题而做出的,其目的在于,提供不使结构大型化就能够将基于二次电池的动作时间变长的电子设备及电子设备处理方法。
用于解决课题的手段
为了解决上述的课题,本发明的电子设备是将二次电池作为电源而进行规定的处理的电子设备,具备:对二次电池的温度进行检测的温度检测部;对由温度检测部检测到的温度比规定值低/高进行判定的低温判定部;在由温度检测部检测到的温度比规定值低时,将规定的处理间歇地实施的间歇处理部;以及在由温度检测部检测到的温度比规定值高时,将规定的处理连续地实施的连续处理部。
本发明的电子设备处理方法是将二次电池作为电源的电子设备处理方法,具有:由低温判定部对由温度检测部检测到的二次电池的温度比规定值低/高进行判定的低温判定步骤;在由温度检测部检测到的温度比规定值低时,将规定的处理间歇地由间歇处理部来实施的间歇处理步骤;以及在由温度检测部检测到的温度比规定值高时,将规定的处理连续地由连续处理部来实施的连续处理步骤。
通过在二次电池的内部电阻增大的低温时将规定的处理间歇地实施,能够定期地使二次电池的端子电压恢复,所以不使得二次电池的容量增加或追加加热器等而导致结构大型化,就能够将作为规定的处理的合计的动作时间的基于二次电池的动作时间变长。
此外,优选还具备电压检测部,其对上述的二次电池的端子电压进行检测,间歇处理部在将实施规定的处理的动作时间设为T1,将停止实施的非动作时间设为T2时,在由电压检测部检测到的端子电压变得比规定的阈值低时,将非动作时间T2变更为比此前更长的时间T3。由此,即使在二次电池的剩余容量降低而端子电压降低的情况下也能够使电压恢复,能够将基于二次电池的动作时间进一步变长。
此外,优选上述的间歇处理部在由电压检测部检测到的端子电压再次变得比规定的阈值低时,将非动作时间T2变更为比T3更长的时间T4。通过根据端子电压的降低的程度而将间歇动作中的非动作时间依次变长,即使在二次电池的端子电压再次降低的情况下也能够使其恢复。
此外,优选在从外部电源停止供电时开始基于二次电池的供电。此外,优选还具备电源控制部,其在检测到从上述的外部电源停止供电时开始基于二次电池的供电。在通过从外部电源供应的电力而进行动作的电子设备的情况下,一般来说,作为预备电源的二次电池的容量倾向于较小,低温时的端子电压的降低也显著,但即使在这样的情况下,通过将规定的处理间歇地实施,也能够在某种程度上确保合计的动作时间。
此外,优选上述的外部电源为所搭载的车辆的电池。由此,能够在通常时通过从电池的供电而实施连续的处理,在产生了电池脱离的异常时转移至间歇的处理。
此外,优选由上述的间歇处理部及连续处理部执行的规定的处理为在所搭载的车辆产生异常时进行的紧急通报动作。此外,优选还具备气囊检测部,其对车辆的气囊的动作进行检测,紧急通报动作在由气囊检测部检测到气囊的动作时被进行。由此,即使在低温时在车辆中产生了异常的情况下(特别是,事故产生时),也能够尽可能不半途中止紧急通报动作而使其结束。
附图说明
图1是表示一实施方式的电子设备的图。
图2是表示在事故产生时进行紧急通报的动作次序的流程图。
图3是表示在低温时进行了间歇的紧急通报动作的情况下的端子电压的推移的图。
标号说明:
100电子设备
110气囊检测部
112GPS接收机
114通信处理部
116声音处理部
118接口部
120电源控制部
122二次电池
124温度传感器
126电压传感器
130应用处理部(AP处理部)
132连续紧急通报处理部
134间歇紧急通报处理部
136事故判定部
138低温判定部
200电池。
具体实施方式
以下,关于应用了本发明的一实施方式的电子设备,参照附图进行说明。
图1是表示一实施方式的电子设备的图。图1所示的电子设备100例如是在车辆中搭载的TCU,具有用户(车辆的驾驶员等)在遭遇到某些问题时与呼叫中心(未图示)进行无线连接,通过车辆的位置信息、与电话员的通话而应对问题的功能。
该电子设备100具备气囊检测部110、GPS接收机112、通信处理部114、声音处理部116、接口部118、电源控制部120、二次电池122、温度传感器124、电压传感器126、应用处理部(AP处理部)130。
气囊检测部110对在事故产生时车辆的气囊(未图示)动作的情况进行检测。GPS接收机112对搭载了电子设备100的车辆的位置进行检测。
通信处理部114是NAD(网络接入设备(Network Access Device)),并且在与成为例如救急通报等的发送目的地的呼叫中心之间进行各信息的收发处理。
声音处理部116用于进行与声音(语音)相关的处理,例如将声音数据解码为模拟的声音信号而从扬声器140输出,或对由麦克风142集音的用户的声音进行编码而变换为数字的声音数据。
接口部118与供用户操作的操作部150、显示部152连接,在与它们之间进行信号的输入输出。
电源控制部120进行如下控制:在从作为外部电源的车载的电池200停止了供电时,开始基于在电子设备100中内置的作为预备电源的二次电池122的供电。本实施方式的电子设备100通过从电池200的供电而进行动作,但有时从电池200的供电线(电池线缆)断线,电池200的端子脱离,或者产生电池200的破损等,导致无法基于电池200供电,设想这样的情况而设置了二次电池122。另外,这样的断线、端子脱离、破损等可以考虑到在车辆产生事故等(追尾事故等)时产生,但也有时在通常行驶时产生。此外,作为二次电池122,例如使用镍氢电池(Ni-MH),但也可以使用锂离子电池等其他类型的二次电池。
温度传感器124对二次电池122的温度进行检测。电压传感器126对二次电池122的端子电压进行检测。
应用处理部130用于对电子设备100的整体进行控制,通过由CPU执行在ROM、RAM等中储存的规定的应用程序来实现。在该应用处理部130中包含:作为2种类的紧急通报处理部的连续紧急通报处理部132和间歇紧急通报处理部134、对事故有无产生进行判定的事故判定部136、以及低温判定部138。连续紧急通报处理部132在由温度传感器124检测到的二次电池122的温度比规定值(例如-20℃)高时,将规定的紧急通报动作“连续地”实施。此外,间歇紧急通报处理部134在由温度传感器124检测到的二次电池122的温度为比规定值(例如-20℃)低的低温状态时,将规定的紧急通报动作“间歇地”实施。另外,进行紧急通报动作时的“连续地”的含义是,“将规定的紧急通报动作从开始至结束连续进行”。此外,进行紧急通报动作时的“间歇地”的含义是,“将规定的紧急通报动作分割为多个,设置在间隙时使动作休止的待机时间,并且按顺序进行各分割紧急通报动作”。事故判定部136根据气囊的动作状态而对事故有无产生进行判定。低温判定部138对由温度传感器124检测到的二次电池122的温度比规定值低/高(是否低)进行判定。
上述的温度传感器124对应于温度检测部,低温判定部138对应于低温判定部,间歇紧急通报处理部134对应于间歇处理部,连续紧急通报处理部132对应于连续处理部,电压传感器126对应于电压检测部,电源控制部120对应于电源控制部,气囊检测部110对应于气囊检测部。
本实施方式的电子设备100具有这样的结构,接着,关于在低温时从电池200停止供电而切换为基于二次电池122的供电的动作进行说明。
图2是表示在事故产生时进行紧急通报的动作次序的流程图。事故判定部136对气囊是否动作进行判定(步骤100)。在气囊没有动作的情况下判断为否定,反复进行该判定。此外,若伴随搭载了电子设备100的车辆的事故产生而气囊动作,则在步骤100的判定中判断为肯定。
接着,电源控制部120对是否产生了电池脱离(从电池200供应的动作电力的停止)进行判定(步骤102)。在没有产生电池脱离的情况下判断为否定。在该情况下,连续紧急通报处理部132进行包含由GPS装置112检测到的本车位置、与事故产生相关的详细信息等的连续的紧急通报动作(步骤104)。
此外,在产生了电池脱离的情况下,在步骤102的判定中判断为肯定。接着,低温判定部138对二次电池122的温度是否为规定值(例如,-20℃)以下的低温进行判定(步骤106)。在温度比规定值高,不是低温的情况下,判断为否定。在该情况下,转移至步骤104,基于连续紧急通报处理部132进行连续的紧急通报动作。
此外,在温度比规定值低,二次电池122的温度为低温的情况下,在步骤106的判定中判断为肯定。在该情况下,间歇紧急通报处理部134进行包含由GPS装置112检测到的本车位置、与事故产生相关的详细信息等的间歇的紧急通报动作(步骤108)。例如,在将分割为多次的紧急通报动作中的每1次的动作时间设为T1,将非动作时间(紧急通报动作休止的时间)设为T2时,设为T1=10秒、T2=60秒,进行间歇的紧急通报动作(间歇A)。
此外,间歇紧急通报处理部134与这样的间歇的紧急通报动作并行地,基于电压传感器126的检测结果,对二次电池122的端子电压是否成为2.2V以下进行判定(步骤110)。在本实施方式中,设为放电前的端子电压为3.6V,若伴随放电动作而端子电压逐渐降低而达到1.8V,则应用处理部130等被强制性地复位。在二次电池122的端子电压比2.2V高的情况下,在步骤110的判定中判断为否定。在该情况下,返回步骤108,间歇的紧急通报动作被继续进行。
此外,若二次电池122的端子电压降低到2.2V以下,则在步骤110的判定中判断为肯定。在该情况下,间歇紧急通报处理部134对间歇的紧急通报动作进行中断而转移至待机状态(步骤112)。紧急通报动作通过从通信处理部114收发信号来进行,所以消耗比较大的电力,若继续进行该动作则特别是在低温时二次电池122的端子电压降低,但若对耗电大的该动作进行中断而转移至待机状态,则二次电池122的端子电压逐渐恢复。
接着,间歇紧急通报处理部134对二次电池122的端子电压是否恢复到3.6V进行判定(步骤114)。在没有恢复的情况下判断为否定,步骤112的待机状态被继续。此外,若待机状态变长而二次电池122的端子电压恢复到3.6V,则在步骤114的判定中判断为肯定。其后,间歇紧急通报处理部134重新开始在步骤108中进行的间歇的紧急通报动作(设为T1=10秒、T2=60秒,间歇的紧急通报动作(间歇A))(步骤116)。
此外,间歇紧急通报处理部134与这样的间歇的紧急通报动作并行地,对二次电池122的端子电压是否成为比上次(步骤110)低的2.0V以下进行判定(步骤118)。在二次电池122的端子电压比2.0V高的情况下判断为否定。在该情况下,返回至步骤116,间歇的紧急通报动作被继续进行。
此外,若二次电池122的端子电压成为2.0V以下,则在步骤118的判定中判断为肯定。在该情况下,间歇紧急通报动作处理部134进行将非动作时间T2变长的间歇的紧急通报动作(步骤120)。例如,维持被分割为多次后的紧急通报动作中的每1次的动作时间T1(10秒),而将非动作时间T2(60秒)设为比此前更长的T3(例如120秒),进行间歇的紧急通报动作(间歇B)。这样,通过从非动作时间T2变更为更长的T3,从而二次电池122的端子电压易于恢复,所以能够使得端子电压不容易降低到2.0V。
其后,间歇紧急通报处理部134与这样的间歇的紧急通报动作并行地,对二次电池122的端子电压是否再次成为2.0V以下进行判定(步骤122)。在二次电池122的端子电压比2.0V高的情况下判断为否定。在该情况下,返回至步骤120,间歇的紧急通报动作(间歇B)被继续进行。
此外,若二次电池122的端子电压再次成为2.0V以下,则在步骤122的判定中判断为肯定。在该情况下,间歇紧急通报动作处理部134进行将非动作时间T3变得更长的间歇的紧急通报动作(步骤124)。例如,维持被分割为多次后的紧急通报动作中的每1次的动作时间T1(10秒),而将非动作时间T3(120秒)设为更长的T4(例如180秒),进行间歇的紧急通报动作(间歇C)。这样,通过从非动作时间T3变更为更长的T4,从而剩余容量低下的二次电池122的端子电压能够易于恢复。
其后,间歇紧急通报处理部134与这样的间歇的紧急通报动作并行地,对二次电池122的端子电压是否再次成为2.0V以下进行判定(步骤126)。在二次电池122的端子电压比2.0V高的情况下判断为否定。在该情况下,返回至步骤124,间歇的紧急通报动作(间歇C)被继续进行。
此外,若二次电池122的端子电压再次(第3次)成为2.0V以下,则在步骤126的判定中判断为肯定。在该情况下,间歇紧急通报动作处理部134停止间歇的紧急通报动作而转移至备用(stand-by)状态(步骤128)。其后,间歇紧急通报处理部134对在该备用状态中二次电池122的端子电压是否恢复到3.6V进行判定(步骤130)。在没有恢复的情况下判断为否定,反复进行该判定。此外,若二次电池122的端子电压恢复到3.6V,则在步骤130的判定中判断为肯定。在该情况下,转移至步骤106,反复进行低温判定以后的动作。
图3是表示在比-20℃低的低温时进行了间歇的紧急通报动作的情况下的二次电池122的端子电压的推移的图。如图3所示,由于进行紧急通报动作,二次电池122的端子电压剧烈地降低,但通过确保其后的非动作时间,能够使该端子电压恢复。
这样,在本实施方式的电子设备100中,通过在二次电池122的内部电阻增大的低温时(-20℃以下)将紧急通报动作间歇地实施,能够定期地使二次电池122的端子电压恢复,所以不使得二次电池122的容量增加或追加加热器等导致结构大型化来进行应对,就能够将作为紧急通报动作的合计的动作时间的基于二次电池122的动作时间变长。
此外,在二次电池122的端子电压降低到2.0V时,通过将间歇的紧急通报动作中的非动作时间T2变更为比此前更长的时间T3,即使在二次电池122的剩余容量降低而端子电压降低的情况下也能够使端子电压恢复,能够将基于二次电池122的动作时间进一步变长。
此外,在二次电池122的端子电压再次降低到2.0V时,通过将间歇的紧急通报动作中的非动作时间T3变更为更长的时间T4,即使在二次电池122的端子电压再次降低的情况下也能够使其恢复。
此外,使得在从作为外部电源的电池200停止供电时开始基于二次电池122的供电,因此具备电源控制部120。在通过从电池200供应的电力而进行动作的电子设备100的情况下,一般来说,作为预备电源的二次电池122的容量倾向于较小,低温时的端子电压的降低也显著,但即使在这样的情况下,通过将紧急通报动作间歇地实施,能够在某种程度上确保合计的动作时间。
此外,在由气囊检测部110检测到气囊的动作时进行紧急通报动作,即使在低温时中产生了车辆事故的情况下,也能够尽可能不半途中止紧急通报动作而进行到最后。
另外,本发明并非限定于上述实施方式,能够在本发明的主旨的范围内进行各种变形实施。例如,在上述的实施方式中,关于作为在车辆中搭载的TCU而动作的电子设备100进行了说明,但通常只要是以从外部电源的供电(不限定于从电池供应电源,也可以是从家庭用插座等被供应电源的情况)进行动作,在该停止供电时以从二次电池的供电进行动作的电子设备,则关于其他电子设备也能够应用本发明。
此外,在上述的实施方式中,关于进行紧急通报动作的情况进行了说明,但由间歇处理部、连续处理部进行的规定的处理不限定于紧急通报动作,也可以是其他处理。
此外,在上述的实施方式中,作为二次电池122的端子电压的比较对象而使用了3.6V、2.2V、2.0V的各电压值,但它们是一例,根据二次电池的种类、容量等而适当变更即可。
工业实用性
如上述那样,根据本发明,通过在二次电池的内部电阻增大的低温时将规定的处理间歇地实施,能够定期地使二次电池的端子电压恢复,所以不使得二次电池的容量增加或追加加热器等而导致结构大型化,就能够将作为规定的处理的合计的动作时间的基于二次电池的动作时间变长。

Claims (19)

1.一种电子设备,将二次电池作为电源而进行规定的处理,其特征在于,具备:
温度检测部,对所述二次电池的温度进行检测;
低温判定部,对由所述温度检测部检测到的温度比规定值低/高进行判定;
间歇处理部,在由所述温度检测部检测到的温度比所述规定值低时,间歇地实施所述规定的处理;以及
连续处理部,在由所述温度检测部检测到的温度比所述规定值高时,连续地实施所述规定的处理。
2.如权利要求1所述的电子设备,其特征在于,还具备:
电压检测部,对所述二次电池的端子电压进行检测,
所述间歇处理部在将实施所述规定的处理的动作时间设为T1,将停止实施的非动作时间设为T2时,在由所述电压检测部检测到的端子电压变得比规定的阈值低时,将所述非动作时间T2变更为比此前更长的时间T3。
3.如权利要求2所述的电子设备,其特征在于,
所述间歇处理部在由所述电压检测部检测到的端子电压再次变得比所述规定的阈值低时,将所述非动作时间T2变更为比时间T3更长的时间T4。
4.如权利要求3所述的电子设备,其特征在于,
在从外部电源停止供电时开始基于所述二次电池的供电。
5.如权利要求4所述的电子设备,其特征在于,还具备:
电源控制部,在检测到从所述外部电源停止供电时开始基于所述二次电池的供电。
6.如权利要求5所述的电子设备,其特征在于,
所述外部电源为所搭载的车辆的电池。
7.如权利要求6所述的电子设备,其特征在于,
由所述间歇处理部及所述连续处理部执行的所述规定的处理为在所搭载的车辆产生异常时进行的紧急通报动作。
8.如权利要求7所述的电子设备,其特征在于,还具备:
气囊检测部,对车辆的气囊的动作进行检测,
所述紧急通报动作在由所述气囊检测部检测到气囊的动作时被进行。
9.如权利要求1所述的电子设备,其特征在于,
在从外部电源停止供电时开始基于所述二次电池的供电。
10.如权利要求9所述的电子设备,其特征在于,还具备:
电源控制部,在检测到从所述外部电源停止供电时开始基于所述二次电池的供电。
11.如权利要求10所述的电子设备,其特征在于,
所述外部电源为所搭载的车辆的电池。
12.如权利要求11所述的电子设备,其特征在于,
由所述间歇处理部及所述连续处理部执行的所述规定的处理是在所搭载的车辆产生异常时进行的紧急通报动作。
13.如权利要求12所述的电子设备,其特征在于,还具备:
气囊检测部,对车辆的气囊的动作进行检测,
所述紧急通报动作在由所述气囊检测部检测到气囊的动作时被进行。
14.如权利要求2所述的电子设备,其特征在于,
在从外部电源停止供电时开始基于所述二次电池的供电。
15.如权利要求14所述的电子设备,其特征在于,还具备:
电源控制部,在检测到从所述外部电源停止供电时开始基于所述二次电池的供电。
16.如权利要求15所述的电子设备,其特征在于,
所述外部电源为所搭载的车辆的电池。
17.如权利要求16所述的电子设备,其特征在于,
由所述间歇处理部及所述连续处理部执行的所述规定的处理是在所搭载的车辆产生异常时进行的紧急通报动作。
18.如权利要求17所述的电子设备,其特征在于,还具备:
气囊检测部,对车辆的气囊的动作进行检测,
所述紧急通报动作在由所述气囊检测部检测到气囊的动作时被进行。
19.一种电子设备处理方法,将二次电池作为电源,其特征在于,具有:
低温判定步骤,由低温判定部对由温度检测部检测到的所述二次电池的温度比规定值低/高进行判定;
间歇处理步骤,在由所述温度检测部检测到的温度比所述规定值低时,间歇地由间歇处理部实施所述规定的处理;以及
连续处理步骤,在由所述温度检测部检测到的温度比所述规定值高时,连续地由连续处理部实施所述规定的处理。
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