CN104065113B - 充电装置及其操作方法 - Google Patents

充电装置及其操作方法 Download PDF

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CN104065113B
CN104065113B CN201410103408.1A CN201410103408A CN104065113B CN 104065113 B CN104065113 B CN 104065113B CN 201410103408 A CN201410103408 A CN 201410103408A CN 104065113 B CN104065113 B CN 104065113B
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任昌俊
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LS Electric Co Ltd
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    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
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    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
    • B60L53/14—Conductive energy transfer
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    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/60—Monitoring or controlling charging stations
    • B60L53/62—Monitoring or controlling charging stations in response to charging parameters, e.g. current, voltage or electrical charge
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
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    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
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Abstract

本发明公开了一种充电装置及其操作方法。所述充电装置包括：接地判定信号生成单元，其用于测量由电力供应单元施加的电力所产生的电流信号或电压信号，所述接地判定信号生成单元基于所述电流或电压信号来生成用于判定所述电力供应单元是否正常接地的信号；电力控制单元，其基于由所述接地判定信号生成单元生成的接地判定检测信号来生成电力控制信号；以及电力切断单元，其基于所述电力控制信号来切断到待充电目标设备的电力供应。

Description

充电装置及其操作方法
技术领域
本发明实施例涉及一种充电装置，尤其涉及一种能够判定电力供应设备是否接地的充电装置。
背景技术
在大城市的空气污染日益严重。来自车辆的尾气排放是空气污染的主要原因之一。在这种情况下，对于使用作为无污染能源的电力作为动力源的所谓电动车的商业化的研究正在积极地进展。电动车接收来自外部的电能来给其中的电池充电，然后使用在电池中充蓄的电压通过与车轮联接的电动机来获取作为机械能的驱动动力。也即，由于电动车需要通过使用电池中充蓄的电压来驱动电动机，所以需要使用高容量的可充电电池。因而，存在有为这些高容量可充电电池进行充电的充电装置。
充电装置分为高速电池充电器和低速电池充电器(idle-speed batterycharger)。
所述高速电池充电器安装在诸如在旅行期间用户停靠以快速给电动车充电的加油站的场所。这里，需要花费大约20分钟的时间来给电动车充电。另一方面，低速电池充电器安装在诸如停车场、购物中心等预期电动车会长时间停靠的地方。这里，大约需要花费五个小时的时间来给电动车充电。
这样的充电装置存在电击的风险，因为其使用的是电力。特别地，当电力供应单元没有正常接地时，使用该充电装置的用户可能会被电击，并且所述充电装置会被破坏。然而，与现有技术有关的充电装置存在不能判定所述电力供应设备是否接地的限制。
发明内容
本发明实施例提供了一种能够判定电力供应单元是否接地的充电装置。
本发明的实施例还提供一种充电装置，其包括：接地判定信号生成单元，其测量由电力供应单元施加的电力所产生的电流信号或电压信号，所述接地判定信号生成单元基于所述电流信号或电压信号来生成用于判定所述电力供应单元是否正常接地的信号；电力控制单元，其基于由所述接地判定信号生成单元生成的接地判定检测信号来生成电力控制信号；以及电力切断单元，其基于所述电力控制信号来切断到待充电目标设备的电力供应。
一个或多个实施例的详细情况将结合附图和以下的说明书进行详细说明。其他特征将通过说明书、附图和权利要求书变得清晰。
附图说明
图1为根据实施例的一种用于给车辆充电的充电装置的方框图。
图2为根据实施例的用于解释充电装置的操作的流程图。
图3为根据实施例的图示出电力供应单元理想接地的状态的图。
图4为根据实施例的图示出电力供应单元实际接地的状态的图。
具体实施方式
在以下说明书和权利要求范围内使用的术语不局限于在字典中的术语，其仅仅是用来解释具体的示例性实施例，而不是为了限制本发明。
因此，在这里描述的实施例和附图仅是示例性的，并不是详尽的，并且应当理解可以对这些实施例进行各种修改和等同替代。
图1为根据实施例的用于给车辆充电的充电装置的方框图。
将参考图1对根据实施例的充电装置进行描述。
根据实施例的充电装置100可由电力切断单元110、接地判定信号生成单元120和电力控制单元130构成。
充电装置100可从电力供应单元300接收电力以给待充电目标设备400(下文中称为“目标设备”)充电。这里，供应的电力可以是通常家用或工厂中使用的大约60Hz的电流或电压。尽管目标设备400在当前实施例下被例示为电动车，但是本发明并不限制于此。例如，所述电动车可以代替为能够充电的各种设备。
根据实施例，电力切断单元110可包括多个继电器115。根据实施例，电力切断单元110可包括两个继电器。两个继电器115中的一个继电器115a具有连接到电力供应单元300的线路L的一端和连接到控制信号生成部132的另一端。另一个继电器115b具有连接到线路N的一端和连接到控制信号生成部132的另一端。
当所述电力供应单元300接地状态不良时，根据实施例的电力切断单元110可以切断供应给目标设备400的电力。也即，当电力供应单元300处于接地故障时，根据实施例的电力切断单元110将所述多个继电器115关断以切断供应给目标设备400的电力。基于从控制信号生成部132施加的控制信号，根据实施例的电力切断单元110可以接通/关断继电器。
当所述电力切断单元110接收到来自所述控制信号生成部132的电力供应控制信号时，根据实施例的电力切断单元110可以接通继电器115。
当所述电力切断单元110接收到来自所述控制信号生成部132的电力供应控制信号时，根据实施例的电力切断单元110可以关断继电器115。
根据实施例的接地判定信号生成单元120可包括变压器T和电阻器R1。
变压器T具有初级线圈，初级线圈的一端连接到电力供应单元300的线路L，而另一端连接到电力供应装置的线路N。
变压器T具有次级线圈，次级线圈的一端接地，而另一端连接到电阻器R1的一端和接地判定部131。
电阻器R1具有连接到接地判定部131的另一端。
接地判定信号生成单元120生成能够判定所述电力供应单元300是否正常接地的接地判定信号。接地判定信号生成单元120生成能够判定电力供应单元300是否正常接地的电流信号或电压信号。
根据实施例的变压器T可将电力划分为用于普通线路的电力和用于感应线路的电力。
根据实施例的变压器T可将从电力供应单元300的两个线路L和N施加的电压进行变换。
在根据实施例的电阻器R1中，电流信号流动，并且基于由变压器T变换的电压来施加电压信号。根据实施例的接地判定信号可包括在电阻器R1中流动的电流信号或施加在电阻器R1上的电压信号。
根据实施例的电力控制单元130可包括接地判定部131和控制信号生成部132。然而，在图1中所示的部件并不是必要的，例如，可以根据实施例来实现具有更多或更少数量的部件的电力控制单元130。
电力控制单元130基于由接地判定信号生成单元120生成的接地判定信号来判定电力供应单元300是否正常接地。根据实施例的电力控制单元130基于接地判定信号生成单元120的电流信号或电压信号来判定所述电力供应单元300是否正常接地。根据实施例的电力控制单元130可以基于在电阻器R1中流动的电流信号或施加在所述电阻器R1上的电压信号来判定电力供应单元300是否正常接地。根据实施例的接地判定部131可以基于所述电流信号或电压信号来判定所述电力供应单元300是否正常接地。接地判定部131可以基于所述电流信号或电压信号来测量连接到电力供应单元300的线路PE上的电阻器的电阻值R2。这里，假如测量的电阻值R2在特定范围之上，那么可以判定电力供应单元300没有正常接地。根据实施例，当电力供应单元300具有大于大约100Ω的电阻值R2时，判定电力供应单元300没有正常接地。接地判定部131判定电力供应单元是否正常接地。
基于接地判定部131判定的结果，控制信号生成部132可以输出电力控制信号。响应于判定的结果，当电力供应单元130正常接地时，控制信号生成部132可生成电力供应控制信号，并且当电力供应单元130没有正常接地时，控制信号生成部132可生成电力切断控制信号。
下文中，将结合附图2至4详细描述根据实施例的充电装置100的操作。
图2为用于解释与根据实施例的充电装置的操作的流程图。
参考图2，在操作S202中，根据实施例的充电装置100接收来自电力供应单元300的电力。
在操作S204中，充电装置100的接地判定信号生成单元120可基于供应的电力来生成接地判定信号。
接地判定信号生成单元120的变压器T可以将施加到电力供应单元300的线路L和N上的电压进行变换。基于在变压器T中变换的电压，电流信号可以在电阻器R1中流动。这里，电压信号可施加在电阻器R1上。接地判定信号可以包括在电阻器R1中流动的电流信号或施加在电阻器R1上的电压信号。
在操作S206上，充电装置100的电力控制单元130可以测量接地判定信号。
电力控制单元130的接地判定部131可以测量在电阻器R1中流动的电流信号或施加在电阻器R1上的电压信号。
在操作S208中，电力控制单元130可以基于接地判定信号来判定电力供应单元300是否正常接地。
接地判定部131可以基于在电阻器R1中流动的电流信号或施加在电阻器R1上的电压信号来判定电力供应单元300是否正常接地。接地判定部131可以基于在电阻器R1中流动的电流信号或施加在所述电阻器R1上的电压信号来测量电力供应单元300的接地线路的电阻值。
图3为根据实施例的电力供应单元理想接地的状态的图。
参考图4，实际的电力供应单元300具有接地线路PE的电阻值R2。
再次描述图2。
当在电阻器R1中流动的电流信号或施加在所述电阻器R1上的电压信号超过正常范围时，根据实施例的接地判定部131可以判定电力供应单元300没有正常接地。
另一方面，当在电阻器R1中流动的电流信号或施加在电阻器R1上的电压信号处于正常范围内时，接地判定部131可以判定电力供应单元300正常接地。
当基于在电阻器R1中流动的电流信号或施加在电阻器R1上的电压信号计算出的电阻值R2的量值位于正常范围内时，接地判定部131可以判定电力供应单元300正常接地。
在电阻器R1中流动的电流信号、施加在电阻器R1上的电压信号或电阻值R2的范围可以由用户输入来设定。可替代地，该范围可提前存储在存储单元(未示出)中。
在操作S210中，假如电力供应单元300没有正常接地，则电力控制单元130可以生成电力切断控制信号。
假如电力供应单元300没有正常接地，则控制信号生成部132可以生成电力切断控制信号。电力切断控制信号为与继电器关断命令有关的控制信号。
在操作S212中，电力切断单元110可以接收电力切断控制信号以切断施加在目标设备400上的电力。也即，电力切断单元110可以关断继电器115以切断供应给所述目标设备400的电力。
在操作S214中，假如电力供应单元300正常接地，那么电力控制单元130可以生成电力供应控制信号。也即，当电力供应单元300正常接地时，电力控制单元130可以生成能够接通继电器的电力供应控制信号。
在操作S216中，电力切断单元110可以接收电力供应控制信号以供应施加在目标设备400上的电力。也即，电力切断单元100可以接通继电器115以给目标设备400供应电力。
尽管这里参考多个示范性实施例对实施例进行了描述，应当理解为本领域技术人员可以实现落在本发明原理的精神和范围内的许多其他的修改和实施方式。更特别地，在本公开说明书、附图和随附的权利要求的范围内构成部件和/或主题组合布置的布置的各种变化和修改是可能的。因此，与各种变化和修改有关的内容也应当解释为包含在本公开的范围内。
尽管这里参考多个示范性实施例对实施例进行了描述，应当理解本领域技术人员可以实现在本发明原理的精神和范围内的许多其他的修改和实施方式。更特别地，在本公开的说明书、附图和随附的权利要求的范围内构成部件和/或主题组合布置的布置的各种变化和修改是可能的。除了在构成部件和/或布置上的变化和修改，可替代的使用对于本领域技术人员来说也是显而易见的。

Claims (3)

1.一种充电装置，包括：
接地判定信号生成单元，其用于测量由从电力供应单元施加的电力所生成的电流信号或电压信号，所述接地判定信号生成单元基于所述电流信号或电压信号来生成用于判定所述电力供应单元是否正常接地的信号；
电力控制单元，其基于由所述接地判定信号生成单元生成的接地判定检测信号来生成电力控制信号；以及
电力切断单元，其基于所述电力控制信号来切断到待充电目标设备的电力供应；
其中所述接地判定信号生成单元包括：变压器，其基于从所述电力供应单元施加的电力来变换所生成的电压；电阻器，其基于由所述变压器变换的电压来检测输入的电流信号和电压信号；
其中所述变压器具有初级线圈和次级线圈，所述初级线圈的一端连接到所述电力供应单元的线路L，而另一端连接到所述电力供应单元的线路N，所述次级线圈的一端接地，而另一端连接到所述电阻器的一端和接地判定部，其中所述电力切断单元包括多个继电器，并且通过所述多个继电器的通/断操作来控制供应给所述待充电目标设备的电力，
其中所述接地判定信号生成单元基于所述电阻器中流动的电流信号或施加在所述电阻器上的电压信号来生成所述接地判定检测信号，
其中所述电力控制单元包括：
接地判定部，其用于测量所述电流信号或电压信号，所述接地判定部基于所述电流信号或电压信号来计算所述电力供应单元的电阻值并且基于所述电阻值来判定所述电力供应单元是否正常接地；以及
控制信号生成部，其基于由所述接地判定部判定的结果来生成电力控制信号。
2.根据权利要求1所述的充电装置，其中当所述电力供应单元正常接地时，所述控制信号生成部生成电力供应控制信号，并且当所述电力供应单元没有正常接地时，所述控制信号生成部生成电力切断控制信号。
3.根据权利要求1所述的充电装置，其中所述多个继电器中的第一继电器具有连接到所述电力供应单元的线路L的一端和连接到所述控制信号生成部的另一端，并且第二继电器具有连接到所述电力供应单元的线路N的一端和连接到所述控制信号生成部的另一端。
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