CN108215880A - 电动车辆的电源装置 - Google Patents
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- B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
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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
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- B60L58/19—Switching between serial connection and parallel connection of battery modules
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- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M10/4257—Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries
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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
- H01M10/44—Methods for charging or discharging
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/509—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the type of connection, e.g. mixed connections
- H01M50/51—Connection only in series
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- H—ELECTRICITY
- 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
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
- H02J7/0016—Circuits for equalisation of charge between batteries using shunting, discharge or bypass circuits
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- H—ELECTRICITY
- 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
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
- H02J7/0019—Circuits for equalisation of charge between batteries using switched or multiplexed charge circuits
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- H—ELECTRICITY
- 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
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
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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
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/54—Drive Train control parameters related to batteries
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- H—ELECTRICITY
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- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
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- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J2207/20—Charging or discharging characterised by the power electronics converter
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
- H02J2310/40—The network being an on-board power network, i.e. within a vehicle
- H02J2310/48—The network being an on-board power network, i.e. within a vehicle for electric vehicles [EV] or hybrid vehicles [HEV]
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Abstract
提供能防止成本提高、布局受限的电动车辆的电源装置。其具有:连接电路(8),其将多个二次电池模块(3)连接且能使多个二次电池模块(3)切换为串联或者并联;切换控制部(20),其控制连接电路(8)的切换状态;以及快速充电用连接器(4),其连接对多个二次电池模块进行充电的快速充电用充电器,切换控制部(20)在快速充电用充电器连接到快速充电用连接器(4)的情况下,控制连接电路(8)的切换状态使多个二次电池模块(3)连接成并联连接。
Description
技术领域
本发明涉及电动车辆的电源装置。
背景技术
以往,专利文献1提出了以下技术:能将电池包内的多个电池的连接状态切换为串联连接或并联连接,在与以规定电压充电的普通充电相比以较大的电压进行充电的快速充电时,使电池的连接状态为串联连接。
现有技术文献
专利文献
专利文献1:特开2015-122866号公报
发明内容
发明要解决的问题
在上述现有技术中,由于在与普通充电相比流动较大电流的快速充电时,使电池包内的多个电池的连接状态为串联连接,因此存在如下问题:从电池产生的热会变大,导致用于对电池进行冷却的冷却装置大型化,成本提高、布局受限。
因此,本发明的目的在于提供一种能防止成本提高、布局受限的电动车辆的电源装置。
用于解决问题的方案
在解决上述问题的本发明的电动车辆的电源装置中,上述电动车辆具有向驱动电动机提供电力的多个二次电池模块,上述电动车辆的电源装置具有:连接电路,其将上述多个二次电池模块连接且能使上述多个二次电池模块切换为串联或者并联;切换控制部,其控制上述连接电路的切换状态;以及快速充电用连接器,其连接对上述多个二次电池模块进行充电的快速充电用充电器,上述切换控制部在上述快速充电用充电器连接到上述快速充电用连接器的情况下,控制上述连接电路的切换状态使上述多个二次电池模块连接成并联连接。
发明效果
本发明能提供能防止成本提高、布局受限的电动车辆的电源装置。
附图说明
图1是示出搭载有本发明的实施例的电动车辆的电源装置的车辆的主要部分的构成图。
图2是示出本发明的实施例的电动车辆的电源装置的电力控制动作的流程图。
附图标记说明
1 车辆(电动车辆)
2 驱动电动机
3 二次电池模块
4 快速充电用连接器
5 普通充电用连接器
8 连接电路
20 切换控制部
具体实施方式
在本发明的一个实施方式的电动车辆的电源装置中,电动车辆具有向驱动电动机提供电力的多个二次电池模块,电动车辆的电源装置具有:连接电路,其将多个二次电池模块连接且能使多个二次电池模块切换为串联或者并联;切换控制部,其控制连接电路的切换状态;以及快速充电用连接器,其连接对多个二次电池模块进行充电的快速充电用充电器,切换控制部在快速充电用充电器连接到快速充电用连接器的情况下,控制连接电路的切换状态使多个二次电池模块连接成并联连接。由此,本发明的一个实施方式的电动车辆的电源装置能防止成本提高、布局受限。
(实施例)
以下,参照附图对将本发明的电动车辆的电源装置应用于以驱动电动机为驱动源的车辆的例子进行说明。
如图1所示,车辆1构成为包括:作为车辆1的驱动源的驱动电动机2、多个二次电池模块3、快速充电用连接器4、普通充电用连接器5、转换器6、逆变器7、连接电路8以及ECU(Electronic Control Unit:电子控制单元)9。
驱动电动机2作为用从多个二次电池模块3提供的电力进行驱动的电动机发挥功能。驱动电动机2也作为利用车辆1的驱动力生成对多个二次电池模块3进行充电的电力的发电机发挥功能。
各二次电池模块3包括串联连接的多个电池单元。此外,在图1中,虽然图示了2个二次电池模块3,但是不限定设于车辆1的二次电池模块3的数量,也可以在车辆1中设置3个以上的二次电池模块3。在以下的说明中,也将多个二次电池模块3仅通称为“电池模块”。
快速充电用连接器4连接对电池模块进行充电的快速充电用充电器。在快速充电用连接器4设有用于在快速充电用充电器与ECU9之间发送接收控制信号的连接端子。
例如,在快速充电用充电器连接到快速充电用连接器4的情况下,通过连接端子从快速充电用充电器向ECU9发送连接信号。在快速充电用充电器连接到快速充电用连接器4的状态下,通过连接端子从ECU9向快速充电用充电器发送指示充电的开始或者结束等的控制信号。
普通充电用连接器5连接与快速充电用充电器相比需要较长的时间进行充电的普通充电用充电器。普通充电用充电器提供比快速充电用充电器低的商用电力。普通充电用连接器5是与家庭用电源插座同样的构成。
转换器6在ECU9的控制下将从连接到普通充电用连接器5的普通充电用充电器提供的交流电转换为提供给电池模块的直流电。
逆变器7在ECU9的控制下将从电池模块提供的直流电转换为提供给驱动电动机2的三相交流电。逆变器7在ECU9的控制下将从驱动电动机2提供的三相交流电转换为提供给电池模块的直流电。
连接电路8构成为包括继电器10至15、第1开关16以及第2开关17。继电器10和11在ECU9的控制下使快速充电用连接器4与电池模块电连接或者切断。
继电器12和13在ECU9的控制下使转换器6与电池模块电连接或者切断。继电器14和15在ECU9的控制下使逆变器7与电池模块电连接或者切断。
第1开关16和第2开关17在ECU9的控制下将多个二次电池模块3连接且能使多个二次电池模块3切换为串联或者并联。此外,图1示出了使多个二次电池模块3并联连接的状态。
即,在使多个二次电池模块3并联连接的状态下,第1开关16为连接状态,第2开关17为使端子17a与端子17b连接的状态。
另一方面,在使多个二次电池模块3串联连接的状态下,第1开关16为切断状态,第2开关17为使端子17a与端子17c连接的状态。
ECU9包括计算机单元,该计算机单元具备:CPU(Central Processing Unit:中央处理单元)、RAM(Random Access Memory:随机存取存储器)、ROM(Read Only Memory:只读存储器)、闪存、输入端口以及输出端口。
计算机单元的ROM中保存有各种常数、各种映射等,并且保存有用于使该计算机单元作为ECU9发挥功能的程序。即,在该计算机单元中,CPU执行ROM中保存的程序,由此该计算机单元作为本实施例中的ECU9发挥功能。
ECU9的输入端口连接有:快速充电用连接器4的连接端子;为了检测普通充电用充电器已与普通充电用连接器5连接而设于普通充电用连接器5的未图示的电压传感器;以及包括检测电池模块的SOC(State of Charge:充电状态)的未图示的SOC传感器在内的各种传感器类。
ECU9的输出端口连接有包括转换器6、逆变器7、连接电路8的各开关在内的各种控制对象类。ECU9基于从各种传感器类得到的信息控制各种控制对象类。具体地说,如以下说明的那样,ECU9具有作为控制连接电路8的切换状态的切换控制部20的功能。
(快速充电)
在快速充电用充电器连接到快速充电用连接器4的情况下,ECU9使继电器10至15中的至少继电器10和11为连接状态,使第1开关16为连接状态,使第2开关17的端子17a与端子17b连接。即,在快速充电用充电器连接到快速充电用连接器4的情况下,ECU9使电池模块并联连接。
(普通充电)
在普通充电用充电器连接到普通充电用连接器5的情况下,ECU9使继电器10至15中的至少继电器12和13为连接状态,使第1开关16为切断状态,使第2开关17的端子17a与端子17c连接。
即,在普通充电用充电器连接到普通充电用连接器5的情况下,ECU9使电池模块串联连接。ECU9在使电池模块串联连接的状态下,对转换器6进行控制,用从连接到普通充电用连接器5的普通充电用充电器提供的电力对电池模块进行充电。
(驱动电动机的驱动)
ECU9在利用电池模块对驱动电动机2进行驱动的情况下,使继电器10至15中的至少继电器12和13为连接状态,使第1开关16为切断状态,使第2开关17的端子17a与端子17c连接。
即,在利用电池模块对驱动电动机2进行驱动的情况下,使电池模块串联连接。ECU9在使电池模块串联连接的状态下,控制逆变器7,从电池模块向驱动电动机2提供电力。
(驱动电动机的充电)
ECU9在利用驱动电动机2使电池模块充电的情况下,使继电器10至15中的至少继电器12和13为连接状态,使第1开关16为切断状态,使第2开关17的端子17a与端子17c连接。
即,在利用驱动电动机2使电池模块充电的情况下,使电池模块串联连接。ECU9在使电池模块串联连接的状态下,控制逆变器7,从驱动电动机2向电池模块提供电力。
参照图2说明如以上那样构成的本发明的实施例的电动车辆的电源装置的电力控制动作。在ECU9工作的期间反复执行以下说明的电力控制动作。
此外,为了使本发明容易理解,以下,关于电力控制动作,主要说明电池模块的连接状态的控制,省略转换器6和逆变器7的控制和继电器10至15的连接状态的控制等的说明。
首先,在步骤S1中,ECU9判断快速充电用充电器是否连接到快速充电用连接器4。具体地说,ECU9在从快速充电用充电器接收到连接信号的情况下,判断为快速充电用充电器连接到快速充电用连接器4,在未从快速充电用充电器接收到连接信号的情况下,判断为快速充电用充电器未与快速充电用连接器4连接。
在判断为快速充电用充电器连接到快速充电用连接器4的情况下,ECU9执行步骤S2的处理,在判断为快速充电用充电器未与快速充电用连接器4连接的情况下,ECU9执行步骤S6的处理。
在步骤S2中,ECU9使电池模块并联连接。具体地说,ECU9使第1开关16为连接状态,使第2开关17的端子17a与端子17b连接。在执行了步骤S2的处理后,ECU9执行步骤S3的处理。
在步骤S3中,ECU9使快速充电开始。具体地说,ECU9将指示充电开始的控制信号发送到快速充电用充电器。在执行了步骤S3的处理后,ECU9执行步骤S4的处理。
在步骤S4中,ECU9判断快速充电的结束条件是否成立。具体地说,ECU9在由SOC传感器检测出的电池模块的SOC为阈值以上的情况下、快速充电用充电器被取下的情况下或者检测出快速充电用充电器等的故障的情况下,判断为快速充电的结束条件成立。
在判断为快速充电的结束条件不成立的情况下,ECU9结束电力控制动作,使快速充电用充电器的充电继续。在判断为快速充电的结束条件成立的情况下,ECU9执行步骤S5的处理。
在步骤S5中,ECU9使快速充电结束。具体地说,ECU9将指示充电结束的控制信号发送到快速充电用充电器。在执行步骤S5的处理后,ECU9结束电力控制动作。
在步骤S6中,ECU9判断普通充电用充电器是否连接到普通充电用连接器5。具体地说,ECU9在由电压传感器检测出规定值以上的电压的情况下,判断为普通充电用充电器连接到普通充电用连接器5,在未检测出规定值以上的电压的情况下,判断为普通充电用充电器未与普通充电用连接器5连接。
在判断为普通充电用充电器连接到普通充电用连接器5的情况下,ECU9执行步骤S7的处理,在判断为普通充电用充电器未与普通充电用连接器5连接的情况下,ECU9执行步骤S10的处理。
在步骤S7中,ECU9使电池模块串联连接。具体地说,ECU9使第1开关16为切断状态,使第2开关17的端子17a与端子17c连接。在执行了步骤S7的处理后,ECU9执行步骤S8的处理。
在步骤S8中,ECU9判断普通充电的结束条件是否成立。具体地说,ECU9在由SOC传感器检测出的电池模块的SOC为阈值以上的情况、普通充电用充电器被取下的情况下或者检测出普通充电用充电器等的故障的情况下,判断为普通充电的结束条件成立。
在判断为普通充电的结束条件不成立的情况下,ECU9结束电力控制动作,使普通充电用充电器的充电继续。在判断为普通充电的结束条件成立的情况下,ECU9执行步骤S9的处理。
在步骤S9中,ECU9使普通充电结束。具体地说,ECU9使转换器6的全部开关切断。此外,在步骤S5中,ECU9也可以使继电器12和13中的至少一方切断。在执行了步骤S5的处理后,ECU9结束电力控制动作。
在步骤S10中,ECU9使电池模块串联连接。具体地说,ECU9使第1开关16为切断状态,使第2开关17的端子17a与端子17c连接。在本实施例中,在利用电池模块对驱动电动机2进行驱动的情况下或者利用驱动电动机2使电池模块充电的情况下等执行步骤S10。在执行了步骤S10的处理后,ECU9结束电力控制动作。
如以上那样,本实施例的电动车辆的电源装置在快速充电用充电器连接到快速充电用连接器4的情况下,控制连接电路8的切换状态使多个二次电池模块3连接成并联连接。
因此,本实施例的电动车辆的电源装置能使由于从快速充电用充电器提供的电力而流动的电流分散到多个二次电池模块3,从而能抑制从二次电池模块3产生的热。
因此,本实施例的电动车辆的电源装置不需要将用于对多个二次电池模块3进行冷却的冷却装置大型化,因此能防止成本提高、布局受限。
另外,本实施例的电动车辆的电源装置减少了快速充电时流动的电流,因此二次电池模块3不需要使用对大电流具有耐性的电池模块,因此能实现成本降低,二次电池模块3的选择范围变大。
另外,本实施例的电动车辆的电源装置在普通充电用充电器连接到普通充电用连接器5的情况下或者通过多个二次电池模块3对驱动电动机2进行驱动的情况下,控制连接电路8的切换状态使多个二次电池模块3连接成串联连接。
因此,本实施例的电动车辆的电源装置能使普通充电的充电时间缩短。另外,本实施例的电动车辆的电源装置由于使多个二次电池模块3串联连接,因此能使电池模块的端子间电压变高,能扩大二次电池模块3和驱动电动机2的使用电压和电流范围。
此外,在本实施例中,说明了将本发明的电动车辆的电源装置应用于以驱动电动机2为驱动源的车辆的例子,但是也能应用于以发动机和驱动电动机为驱动源的车辆即所谓的插电式混合动力车辆。
以上,公开了本发明的实施例,但是显然能不脱离本发明的范围而对本实施例施加变更。本发明的实施例是以将施加了这种变更的等价物包含于权利要求所记载的发明为前提而公开的。
Claims (2)
1.一种电动车辆的电源装置,上述电动车辆具有向驱动电动机提供电力的多个二次电池模块,上述电动车辆的电源装置的特征在于,具有:
连接电路,其将上述多个二次电池模块连接且能使上述多个二次电池模块切换为串联或者并联;
切换控制部,其控制上述连接电路的切换状态;以及
快速充电用连接器,其连接对上述多个二次电池模块进行充电的快速充电用充电器,
上述切换控制部在上述快速充电用充电器连接到上述快速充电用连接器的情况下,控制上述连接电路的切换状态使上述多个二次电池模块连接成并联连接。
2.根据权利要求1所述的电动车辆的电源装置,其特征在于,
还具有用于连接普通充电用充电器的普通充电用连接器,上述普通充电用充电器与上述快速充电用充电器相比需要较长的时间对上述多个二次电池模块进行充电,
上述切换控制部在上述普通充电用充电器连接到上述普通充电用连接器的情况下或者通过上述多个二次电池模块对上述驱动电动机进行驱动的情况下,控制上述连接电路的切换状态使上述多个二次电池模块连接成串联连接。
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