CN110365098A - 供电装置 - Google Patents

供电装置 Download PDF

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CN110365098A
CN110365098A CN201910284496.2A CN201910284496A CN110365098A CN 110365098 A CN110365098 A CN 110365098A CN 201910284496 A CN201910284496 A CN 201910284496A CN 110365098 A CN110365098 A CN 110365098A
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switch
capacitor
battery
load
power supply
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CN110365098B (zh
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岩崎胜幸
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Yazaki Corp
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Yazaki Corp
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    • 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
    • B60L1/00Supplying electric power to auxiliary equipment of vehicles
    • B60L1/02Supplying electric power to auxiliary equipment of vehicles to electric heating circuits
    • B60L1/04Supplying electric power to auxiliary equipment of vehicles to electric heating circuits fed by the power supply line
    • B60L1/10Supplying electric power to auxiliary equipment of vehicles to electric heating circuits fed by the power supply line with provision for using different supplies
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • H02J9/061Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J1/00Circuit arrangements for dc mains or dc distribution networks
    • H02J1/08Three-wire systems; Systems having more than three wires
    • H02J1/084Three-wire systems; Systems having more than three wires for selectively connecting the load or loads to one or several among a plurality of power lines or power sources
    • H02J1/086Three-wire systems; Systems having more than three wires for selectively connecting the load or loads to one or several among a plurality of power lines or power sources for providing alternative feeding paths between load or loads and source or sources when the main path fails
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J1/00Circuit arrangements for dc mains or dc distribution networks
    • H02J1/10Parallel operation of dc sources
    • 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
    • H02J7/0068Battery or charger load switching, e.g. concurrent charging and load supply
    • 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
    • H02J7/34Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • 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
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J1/00Circuit arrangements for dc mains or dc distribution networks
    • H02J1/10Parallel operation of dc sources
    • H02J1/106Parallel operation of dc sources for load balancing, symmetrisation, or sharing
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2310/00The network for supplying or distributing electric power characterised by its spatial reach or by the load
    • H02J2310/40The network being an on-board power network, i.e. within a vehicle
    • H02J2310/46The network being an on-board power network, i.e. within a vehicle for ICE-powered road vehicles
    • 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
    • H02J7/0029Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/0031Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
    • 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
    • H02J7/34Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • H02J7/345Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Stand-By Power Supply Arrangements (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

当发生电池异常时,有效地使用用于将电力供给到负载的电容器。用于连接到电池和电力从电池供给到的负载的供电装置包括:电容器;第一开关,其用于切换电池与电容器之间的连接状态;第二开关,其用于切换电容器与负载之间的连接状态;以及控制单元,其用于检测电容器的充电状态以及电池的异常。当没有检测到电池的异常时,当电容器未充电时,控制单元接通第一开关并且断开第二开关,并且在电容器完全充电之后,控制单元将第一开关维持为接通。

Description

供电装置
技术领域
本发明涉及一种当发生电池异常时将电力供应到负载的供电装置。
背景技术
诸如汽车这样的车辆包括电池,所述电池用于将电力供给到电子控制装置、电气装置等的负载。广泛地使用12V铅蓄电池作为电池。电力从电池供应到的负载涉及诸如行驶、转向、停车、车门的打开和关闭等这样的功能,并且包括即使当电池故障时也优选地维持电力供给的负载(后文称为“备用负载”)。
在专利文献1中,如图8所示,描述了通过使用连接到电池310的降压电路320对电容器330预先充电,并且当控制单元360检测到电池310的异常时,控制升压电路340以使电容器330的充电电压升高,并且供给到备用负载350。
引用列表
专利文献
专利文献1:JP 5618024 B
发明内容
技术问题
在专利文献1中描述的发明中,仅为了当电池310故障时操作备用负载350而使用电容器330,并且不能说电容器330被有效地充分利用。
因此,本发明的目的是当发生电池异常时有效地使用向负载供给电力的电容器。
解决问题的方案
为了解决上述问题,根据本发明的第一方面,提供了一种供电装置,用于连接到电池和电力从所述电池供给到的负载,所述供电装置包括:
电容器;
第一开关,该第一开关用于切换所述电池与所述电容器之间的连接状态;
第二开关,该第二开关用于切换所述电容器与所述负载之间的连接状态;以及
控制单元,该控制单元用于检测所述电容器的充电状态以及所述电池的异常,
其中,当没有检测到所述电池的异常时,在所述电容器未完全充电时,所述控制单元接通所述第一开关并且断开所述第二开关,并且在所述电容器完全充电之后,所述控制单元将所述第一开关维持为接通。
这里,当检测到所述电池的异常时,所述控制单元断开所述第一开关并且接通所述第二开关。
此外,当满足预定条件时,所述控制单元判定优先将电力供给到所述负载,并且断开所述第一开关并且断开所述第二开关。
此外,所述第一开关包括:
第二半导体开关和第三半导体开关,该第二半导体开关与第三半导体开关在所述电池与所述电容器之间串联连接,以及
第一半导体开关,该第一半导体开关与所述第二半导体开关并联连接,并且与电阻串联连接。
此时,在所述第一半导体开关和所述第二半导体开关中,寄生二极管的阳极设置在所述电池侧,并且在所述第三半导体开关中,寄生二极管的阳极布置在所述电容器侧。
发明的有益效果
根据本发明,能够在电池发生异常时有效地使用用于将电力供给到负载的电容器。
附图说明
图1是示出根据本实施例的供电装置的配置的框图;
图2是用于说明开关切换的图;
图3是用于说明在启动后立即对电容器充电时的供电路径的图;
图4是用于说明在电容器充电期间的供电路径的图;
图5是用于说明在电池支持期间的供电路径的图;
图6是用于说明在电池异常时的供电路径的图;
图7是用于说明在给与备用负载供电优先时的供电路径的图;以及
图8是用于说明当产生电源故障时将电力供给到负载的电容器的图。
参考标记列表
100 供电装置
110 电容器
120 控制单元
130 第一开关
140 第二开关
200 电池
210 备用负载
具体实施方式
将参考附图详细描述本发明的实施例。图1是示出根据本实施例的供电装置100的配置的框图。在该附图中,电力从电池200供给到备用负载210。
例如,供电装置100安装在车辆中,并且是当电池200故障时将电力供给到备用负载210的装置。此处,备用负载210涉及诸如行驶、转向、停车、车门的打开和关闭等这样的功能,并且优选地,即使当电池200异常时也维持供电。虽然未示出,但是除了备用负载210之外的普通负载也连接到电池200。另外,可以连接ISG(带有电动机功能的发电机)等。
如在该附图中所示,供电装置100包括:SW1、SW2、SW3和SW4,其分别由半导体开关构成;电阻R1;电容器110;以及控制单元120。电容器110能够是例如具有长寿命和高容量的双电层电容器(EDLC)。另外,DCDC转换器可以布置于电容器110的前级。
SW2、SW3和电容器110串联连接到电池200。另外,SW1与电阻R1的串联电路与SW2并联连接。此外,电容器110经由SW4连接到备用负载210。
在SW1和SW2中,寄生二极管的阳极设置在电池200侧,并且SW3的寄生二极管的阳极设置在电容器110侧。即,SW2和SW3的阴极互相连接。此外,在SW4中,寄生二极管的阳极布置在备用负载210侧。
SW1、SW2和SW3用作切换电池200与电容器110之间的连接状态的第一开关130。SW4用作切换电容器110与备用负载210之间的连接状态的第二开关140。
控制单元120监控车辆的状态、电池200的状态、电容器110的充电状态等,并且控制SW1、SW2、SW3和SW4的接通/断开。顺便提及,可以为切换电容器110与备用负载210之间的连接状态的SW4设置控制功能。在该情况下,当SW4检测到电池200的异常、车辆的事故等时,其控制为使得电容器110与备用负载210连接。
接着,将描述具有以上配置的供电装置100的操作。图2是用于说明各个开关的接通/断开的图。当电容器110充电时,例如,当车辆启动时,SW1和SW3接通以将电池200与电容器110电连接。在初始状态下,SW2断开。此外,开关SW4断开从而将电力从电容器110供给到备用负载210。
图3示出了此时的电流路径(粗线)。备用负载210被供给有来自电池200的电力。电容器110通过从电池200经由SW1到SW3的路径充电。由于电阻R1连接到SW1,所以能够防止到电容器110的过大的浪涌电流。
在从SW1和SW3接通开始过去预定时间之后,SW2接通。图4示出了此时的电流路径。由于对电容器110充电的主路径从SW1切换到SW2,所以能够抑制在电阻R1处的电力消耗。
针对在对电容器110充电时电池200与电容器110之间的连接关系以及电容器110与备用负载210之间的连接关系,用于切换电池200与电容器110之间的连接状态的第一开关130接通,并且用于切换电容器110与备用负载210之间的连接状态的第二开关140断开。
在正常行驶等期间,控制单元120监控电容器110的充电电压,并且当检测到完成充电时,将SW1断开。图4示出了此时的电流路径。如该附图中示出的,形成了从电容器110经由SW3、SW2到电池200的电流路径。顺便提及,当使用SW3的寄生二极管时,SW3可以断开。
已经利用该电流路径充电的电容器110能够与电池200一起将电力供给到备用负载210和普通负载(未示出)。即,电容器110还起到支持电池200的作用。从而,能够有效地使用电容器110。
例如,在负载瞬时要求大的电流的情况下,电容器110释放电荷,从而防止过大的负担施加到电池200。然而,假设保留能够供给到备用负载210的电荷。
针对在对电容器110充电之后电池200与电容器110之间的连接关系以及电容器110与备用负载210之间的连接关系,用于切换电池200与电容器110之间的连接状态的第一开关130接通,并且用于切换电容器110与备用负载210之间的连接状态的第二开关140断开。即,在本实施例中,即使在电容器110充电之后也维持电池200与电容器110之间的连接。
当在驾驶期间由于电池故障等而在电池200中产生异常时,开关SW1、SW2和SW3断开,以断开电池200与电容器110之间的路径,并且开关SW4接通。图6示出了此时的电流路径。电容器110代替发生异常的电池200向备用负载210供给电力。
针对在电池200异常时电池200与电容器110之间的连接关系以及电容器110与备用负载210之间的连接关系,用于切换电池200与电容器110之间的连接状态的第一开关130断开,并且用于切换电容器110与备用负载210之间的连接状态的第二开关140接通。
在充电之后进行滑行等时优先将电力供给到备用负载210的情况下,SW1、SW2和SW4可以断开,并且可以仅接通SW3。此处,滑行是如下的驾驶操作:其中,发动机与轮胎彼此断开,并且车辆由于车辆的惯性而滑动。控制单元120判定当车辆进入诸如滑行这样的预定状态时优先将电力供给到备用负载210。图7示出了此时的电流路径。
由于该电流路径,备用负载210能够优先地从电池200接收到电源电力。由于SW3接通,所以电容器110能够使用SW2的寄生二极管充电。
针对在对电容器110充电之后优先将电力供给到备用负载210的情况下的电池200与电容器110之间的连接关系以及电容器110与备用负载210之间的连接关系,用于切换电池200与电容器110之间的连接状态的第一开关130断开,并且用于切换电容器110与备用负载210之间的连接状态的第二开关140断开。然而,通过第一开关130的寄生二极管形成从电池200到电容器110的电流路径。
如上所述,根据本实施例的供电装置100,由于即使在电容器110的充电之后也维持第一开关130,该第一开关130在电池200处于异常状态时切换将向备用负载210供给电力的电容器110与电池200之间的连接状态,所以电容器110能够支持电池200,从而有效地使用电容器110。

Claims (5)

1.一种供电装置,该供电装置用于连接到电池和负载,电力从所述电池供给到该负载,所述供电装置包括:
电容器;
第一开关,该第一开关用于切换所述电池与所述电容器之间的连接状态;
第二开关,该第二开关用于切换所述电容器与所述负载之间的连接状态;以及
控制单元,该控制单元用于检测所述电容器的充电状态以及所述电池的异常,
其中,当没有检测到所述电池的异常时,在所述电容器未完全充电时,所述控制单元接通所述第一开关并且断开所述第二开关,并且在所述电容器完全充电之后,所述控制单元将所述第一开关保持为接通。
2.根据权利要求1所述的供电装置,
其中,当检测到所述电池的异常时,所述控制单元断开所述第一开关并且接通所述第二开关。
3.根据权利要求1或2所述的供电装置,
其中,当满足预定条件时,所述控制单元判定优先将电力供给到所述负载,并且断开所述第一开关且断开所述第二开关。
4.根据权利要求1至3的任意一项所述的供电装置,
其中,所述第一开关包括:
第二半导体开关和第三半导体开关,该第二半导体开关与第三半导体开关在所述电池与所述电容器之间串联连接,以及
第一半导体开关,该第一半导体开关与所述第二半导体开关并联连接,并且与电阻串联连接。
5.根据权利要求4所述的供电装置,
其中,在所述第一半导体开关和所述第二半导体开关中,寄生二极管的阳极设置在所述电池这一侧,并且在所述第三半导体开关中,寄生二极管的阳极布置在所述电容器这一侧。
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