CN104578244B - 环保型车辆的车载充电器 - Google Patents
环保型车辆的车载充电器 Download PDFInfo
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- H—ELECTRICITY
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- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
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- 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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- B60L—PROPULSION 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
- B60L50/00—Electric propulsion with power supplied within the vehicle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
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- B60L—PROPULSION 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION 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
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
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- B60—VEHICLES IN GENERAL
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
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Abstract
本发明提供一种环保型车辆的车载充电器,其包括:控制导向(CP)检测电路,其通过连接器被连接至电动车辆供电设备(EVSE),i)检测经上述连接器从上述EVSE传输而来的作为输入信号的CP信号,ii)输出作为被识别为DC的直流(DC)信号的上述CP信号,以及iii)通过上述DC信号使用于控制充电的车载充电器(OBC)控制电路维持在接通状态。
Description
技术领域
本发明的示例性实施例涉及环保型车辆,具体地涉及环保型车辆的车载充电器,该充电器使用具有高可靠性的从电动车辆供电设备(EVSE:electric vehicle supplyequipment)传输至车载充电器的控制导向(CP:Control Pilot)信号的检测电路,以便能够实现性能的改善以及充电器成本的降低和尺寸的减少。
背景技术
一般来讲,电动车辆(EV:Electric Vehicle)或插电式混合动力电动车辆(PHEV:plug-in hybrid electric vehicle)被认为是环保型车辆,并且配备有用于对牵引电池充电的充电器电源系统。这种充电器电源系统被连接至电动车辆供电设备(下文,被称为“EVSE”),并且EVSE被分类为快速充电器和缓速充电座。快速充电器以使用直流(DC)电源的方式配置并且通过控制电池管理系统(battery management system;下文被称为“BMS”),对电池进行快速充电,然而,缓速充电座按使用AC电源的方式配置并且通过控制BMS和车载充电器(on-boardcharger;下文被称为“OBC”),对电池进行缓速充电。
通常,当在车辆点火(ignition)关闭的状态下,在OBC的控制下对电池进行充电时,EVSE的连接器被连接至控制电路,使得控制电路接通。另一方面,应该将控制电路维持在接通的状态,同时执行充电。然而,由于作为充电标准的J1772标准,不可能使用所提供的信号来直接接通控制电路。由于该原因,从EVSE传输至充电器的控制导向(下文被称为“CP”)信号被用来直接接通控制电路。然而,因为CP信号是脉宽调制(PWM:Pulse-widthModulation)信号,所以直接使用该信号来维持接通状态存在限制。
由于该原因,使用除控制电路外还通过单独地提供始终运行的CP检测电路来使信号使能(enable)的方法(例如“第一方法”),或者在辅助性电源单元通过CP信号的初始输入而被接通后处理CP信号从而连续地生成使能信号的方法(例如,“第二方法”),对控制电路进行控制,使其在电池的充电期间接通。然而,控制控制电路使其在电池的充电期间被接通的第一方法可受到暗电流的不利影响。此外,由于按照6至12V的输入电压范围和5至95%的占空比改变的CP信号的各种条件,第二方法限制于均匀地生成输出信号。为此,可使用平滑电路和/或放大电路,但是会出现如下问题,即电路的驱动时间受到限制,并且电路具有不稳定运行的可能性。
发明内容
本发明的实施例涉及环保型车辆的车载充电器,该充电器将定时器电路用作检测电路,用于将从EVSE传输至OBC的CP信号转换成被识别为DC的DC信号并且用于输出DC信号,这样通过移除因未知电压所致的异常运行的可能性来增强操作可靠性,以及只要CP信号被传输至OBC,就连续地维持DC信号的输出,由此实现快速响应速度和稳定的可操作性。本发明实施例能够实现OBC性能的改善以及成本的降低和尺寸的减小。
通过以下说明可以理解本发明的其他目标和优点,并且参考本发明的实施例将变得显而易见。同样地,对于本发明所属的本领域技术人员而言显而易见的是本发明的目标和优点可通过权利要求所述的装置和其中的组合来实现。
根据本发明的实施例,环保型车辆的车载充电器包括CP检测电路,其通过连接器被连接至EVSE,i)检测经连接器从EVSE传输而来的作为输入信号的CP信号,ii)输出作为被识别为DC的DC信号的CP信号,以及iii)通过DC信号使用于控制充电的OBC控制电路维持在接通状态。
CP检测电路可以是定时器型CP检测电路,并且该定时器型CP检测电路可具有设定成比CP信号的周期长的输出持续时间(duration)。
CP检测电路可以是比较器型CP检测电路,并且该比较器型CP检测电路可由2ch开漏(集电极)型比较器构成。
CP检测电路可以是集成电路(IC)定时器型CP检测电路,并且该IC定时器型CP检测电路可以由定时器IC构成,该定时器IC是555定时器电路的丢失脉冲检测器。
定时器型CP检测电路、比较器型CP检测电路、或IC定时器型CP检测电路可被供应来自辅助性电源单元的电力,DC信号可经开/关逻辑被传输至主电源单元,该开/关逻辑被供应来自辅助性电源单元的电力,并且OBC控制电路可通过主电源单元而被接通。
附图说明
图1是示出本发明的实施例的包括定时器型检测电路的环保型车辆的车载充电器的结构的图。
图2A和2B是示出本发明的实施例的通过定时器型检测电路从CP信号转换得到的DC信号的输出的时序图。
图3是示出由2ch开漏(集电极)型比较器构成的本发明的实施例的检测电路的第一变形例的图。
图4是示出由作为通用定时器IC的555定时器电路的丢失脉冲检测器构成的本发明的实施例的检测电路的第二变形例的图。
具体实施方式
下面,将参考附图,对本发明的示例性实施例进行更详细地说明。然而,本发明可体现为不同形式并且不应被理解为被限制为如本文所示的实施例。相反,这些实施例是用来使本发明全面和完善,并且用来将本发明的范围充分地传达给本领域技术人员。贯穿本发明,相同附图标记指代本发明的多幅图形和实施例的相同部件。
本文使用的术语仅仅是为了说明示例性实施方式的目的而不是意在限制本发明。如本文所使用的,单数形式“一个、一种(a、an和the)”也意在包括复数形式,除非上下文中清楚指明。还可以理解的是,在说明书中使用的术语“包括(comprises和/或comprising)”是指存在所述特征、整数(Integer,整体)、步骤、操作、元件和/或部件,但是不排除存在或添加一个或多个其它特征、整数、步骤、操作、元件、部件和/或其群组。如本文所使用的,术语“和/或”包括一个或多个相关所列项目的任何和所有组合。
应理解,本文使用的术语“车辆”(vehicle)或“车辆的”(vehicular)或其它类似术语包括通常的机动车,例如,包括多功能运动车(SUV)在内的乘用车、公交车、卡车、各种商务车、包括各种船只和船舶的水运工具、飞行器等等,并且包括混合动力车、电动车、插入式混合电动车、氢动力车、燃料电池车和其它代用燃料车(例如,来源于石油以外的资源的燃料)。本文所使用的混合动力车是具有两种以上动力源的车辆,比如汽油动力和电动车。
图1是示出本发明的实施例的包括定时器型检测电路的环保型车辆的车载充电器的结构的图。
如图所示,OBC(车载充电器)1包括定时器型CP(控制导向)检测电路10,其检测从EVSE(电动车辆供电设备)100传输而来的CP信号并且将所检测的CP信号转换成被识别为DC的信号,从而输出DC信号。定时器型CP检测电路10经操作使得当CP信号100A作为PWM信号被输入时,信号被输入后在一定时间内将该信号维持在高电平状态(high state),从而作为DC信号10A输出。
此外,OBC1包括辅助性电源单元3和主电源单元7,其中辅助性电源单元用于将电力供应至定时器型CP检测电路10,主电源单元用于将电力供应至OBC控制电路9。此外,OBC1还包括被供应来自辅助性电源单元3的电力的开/关逻辑5。该开/关逻辑5将从定时器型CP检测电路10输出的信号传输至主电源单元7,使得CP信号在电池充电期间维持在使能状态(enabled state)。
另外,图2A和2B示出本发明的实施例的包括定时器型检测电路10的OBC1的运行状态。如图所示,当使用连接器将EVSE100连接至OBC1时,EVSE100将作为PWM信号的CP信号100A传输至OBC1,并且定时器型CP检测电路10检测输入至OBC1的CP信号100A。
此处,定时器型CP检测电路10使信号被输入后在一定时间内维持在高电平状态。具体而言,定时器型CP检测电路10具有被设定为比输入信号的周期长的输出持续时间。因此,在定时器型CP检测电路10中,相对于连续地输入的CP信号100A生成连续的高电平输出(highoutput),最终,由于比输入信号的周期长的输出持续时间,而形成并输出被识别为DC的DC信号10A。DC信号10A经开/关逻辑5被传输至主电源单元7,使得控制电路维持在接通状态的同时执行充电。
具体地,因为只要CP信号100A被输入至定时器型CP检测电路10,便连续维持从定时器型CP检测电路10输出的DC信号10A,所以在实现快速响应速度的同时实现了稳定的可操作性,并且通过移除因未知电压所致的异常运行的可能性而增强运行可靠性。另外,当实现相同功能时,相比于平滑电路和/或放大电路,能够减小定时器型CP检测电路10的尺寸。首要的是,通过高的可靠性能够实现性能的提高和OBC1成本的降低。
另外,图3是示出由2ch开漏(集电极)型比较器构成的本发明的实施例的检测电路的第一变形例的图。如图所示,比较器型CP检测电路10-1由2ch开漏(集电极)型比较器构成。因此,比较器型CP检测电路10-1具有与图1的定时器型CP检测电路10不同的结构。
此外,比较器型CP检测电路10-1经操作使得当在高电平状态下输入时,CP输入信号(例如,图1的CP信号100A)在具有高于第一基准电压Vref1的电压状态下被输入,并因此被充入电容器C的电压通过一个通道(pass)被释放。因此,输出信号(例如,图1的DC信号10A)在高电平状态下被输出。
因为CP输入信号(例如,图1的CP信号100A)在低电平状态(low state)下进入开漏状态,所以电容器C通过两个通道充电。因此,当因电阻R和电容器C的延迟而充入的电压值被设定成小于第二基准电压Vref2时,在指定的时间内,在高电平状态下将输出信号(例如,图1的DC信号10A)从电路中输出。
接下来,当下一个CP输入信号(例如,图1的CP信号100A)被输入至电路时,该电路再次通过一个通道将电压释放,使得输出信号(例如,图1的DC信号10A)在高电平状态下被输出。具体地,因为CP输入信号(例如,图1的CP信号100A)中占空比发生变化而频率不变,所以输入信号可在高电平状态下以规则的时间间隔被连续地输入,并且输出信号可在高电平状态下被连续地输出。因此,类似于图1的定时器型检测电路10,只要CP信号被输入至比较器型CP检测电路10-1,控制电路便稳定地并且连续地维持在接通状态。
另外,图4是示出由作为通用定时器IC的555定时器电路的丢失脉冲检测器构成的本发明的实施例的检测电路的第二变形例的图。
如图所示,IC定时器型CP检测电路10-2由使用555定时器电路的丢失脉冲检测器的通用定时器IC构成。因此,IC定时器型CP检测电路10-2具有与图1的定时器型CP检测电路10或图3的比较器型CP检测电路10-1不同的结构。
此外,IC定时器型CP检测电路10-2除了IC定时器型CP检测电路10-2与图1的定时器型CP检测电路10或图3的比较器型CP检测电路10-1不同,响应于负沿(negative edge)以外,具有与图1的定时器型CP检测电路10或图3的比较器型CP检测电路10-1相同的工作原理。例如,当CP输入信号(例如,图1的CP信号100A)被输入至IC定时器型CP检测电路10-2时,当输入信号在比指定的时间间隔长的状态下被输入时,输出信号在低电平状态下被输出。因此,类似于图1的定时器型检测电路10,只要CP信号被输入至IC定时器型CP检测电路10-2,控制电路便被稳定地且连续地维持在接通状态。
如上所述,本文公开的实施例的环保型车辆的车载充电器包括定时器型CP检测电路10,该检测电路通过连接器连接至EVSE100,其:i)检测经连接器的连接从EVSE传输而来的作为输入信号的CP信号100A,ii)输出作为被识别为DC的DC信号10A的CP信号100A,以及iii)通过DC信号10A使OBC控制电路9维持在接通状态。结果,因快速响应速度和稳定的可操作性,可以连续地维持在电池充电期间所需的OBC控制电路9的接通状态。具体地,通过移除因未知电压所致的异常运行的可能性,可以显著地增加定时器型CP检测电路10的操作可靠性。因此,通过高的可靠性能够实现性能的提高和OBC成本的降低和尺寸的减小。
如根据以上说明显而易见的,因为本发明将定时器电路用作检测电路,用于将从EVSE传输到OBC的CP信号转换成被识别为DC的DC信号,使得输出DC信号,其能够移除因未知电压所致的异常运行的可能性,以及基于DC信号的连续输出和快速响应速度,实现稳定的可靠性。此外,本发明可通过定时器电路的高的操作可靠性来增强OBC的性能,其中定时器电路能够实现稳定的可操作性以及移除因位置电压所致的操作异常的可能性。具体地,通过较大程度地减少故障发生的可能性,能够显著地改善在电池充电期间现场频繁发生的故障。因此,可以显著地提高客户满意度。此外,本发明通过使用定时器电路而简化CP输入驱动电路的结构,可减小印刷电路板(PCB)的尺寸,因尺寸减小而降低零件成本,以及根据通过增加PCB内的安装区域而提高电磁波的性能,减少研发成本。
虽然已参考特定实施例对本发明进行说明,但对本领域技术人员显而易见的是在不背离所附权利要求所限定的本发明的精神和范围的情况下可以做出各种改变和变形。
Claims (3)
1.一种环保型车辆的车载充电器,其包括:
控制导向检测电路,其通过连接器被连接至电动车辆供电设备,i)检测经所述连接器从所述电动车辆供电设备传输而来的作为输入信号的控制导向信号,ii)输出作为被识别为直流的直流信号的所述控制导向信号,以及iii)通过所述直流信号使用于控制充电的车载充电器控制电路维持在接通状态,
其中,所述控制导向检测电路是定时器型控制导向检测电路,
其中,所述定时器型控制导向检测电路检测输入至车载充电器的控制导向信号,然后在一定时间内维持高电平状态,以便生成所述直流信号,
其中,所述定时器型控制导向检测电路具有设定成比所述控制导向信号的周期长的输出持续时间。
2.根据权利要求1所述的车载充电器,其中,所述定时器型控制导向检测电路被供应来自辅助性电源单元的电力,所述直流信号经开/关逻辑被传输至主电源单元,所述开/关逻辑被供应来自所述辅助性电源单元的电力,并且所述车载充电器控制电路通过所述主电源单元而被接通。
3.一种通过控制导向检测电路来执行的环保型车辆的车载充电方法,所述控制导向检测电路通过连接器被连接至电动车辆供电设备,所述方法包括:
检测经所述连接器从所述电动车辆供电设备传输而来的作为输入信号的控制导向信号;
输出作为被识别为直流的直流信号的所述控制导向信号;以及
通过所述直流信号使用于控制充电的车载充电器控制电路维持在接通状态,
其中,所述控制导向检测电路是定时器型控制导向检测电路,
其中,当所述定时器型控制导向检测电路检测到输入至车载充电器的控制导向信号时,生成所述直流信号,
其中,所述定时器型控制导向检测电路具有设定成比所述控制导向信号的周期长的输出持续时间。
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