CN108336779A - 蓄电池模块及具备其的蓄电池*** - Google Patents

蓄电池模块及具备其的蓄电池*** Download PDF

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CN108336779A
CN108336779A CN201810053038.3A CN201810053038A CN108336779A CN 108336779 A CN108336779 A CN 108336779A CN 201810053038 A CN201810053038 A CN 201810053038A CN 108336779 A CN108336779 A CN 108336779A
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battery
monitoring circuit
battery module
circuit
switching
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三野孝之
山嶋雅之
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TDK Corp
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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
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • 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
    • 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
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
    • B60L3/0046—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electric energy storage systems, e.g. batteries or capacitors
    • 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
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
    • B60L58/19—Switching between serial connection and parallel connection of battery modules
    • 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
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
    • B60L58/22—Balancing the charge of battery modules
    • 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
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • 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
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
    • 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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • 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
    • 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
    • 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
    • H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
    • H02J7/0048—Detection of remaining charge capacity or state of charge [SOC]
    • 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
    • H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
    • 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
    • B60L2240/547—Voltage
    • 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
    • B60L2240/549—Current
    • 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
    • H01M10/425—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
    • 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
    • H02J2207/10—Control circuit supply, e.g. means for supplying power to the control circuit
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
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  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
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Abstract

本发明提供一种蓄电池模块及具备其的蓄电池***，其不会产生不必要的容量损耗，可将蓄电池模块的电池剩余容量均衡化。蓄电池模块具备：监视电路(43)，监视蓄电池单体(40)的状态；开关电路(50)，基于切换信号(SW1、SW2)，将从外部电源端子(13)及蓄电池单体(40)供给的电力中的任一方供给到监视电路(43)。根据本发明，可从外部电源和蓄电池单体这两种中有选择地向监视电路(43)供给电力，所以在电池剩余容量较少的情况下，利用外部电源使监视电路(43)动作，在电池剩余容量较多的情况下，能够利用从内部的蓄电池单体(40)供给的电力使监视电路(43)动作。由此，即使在使用多个蓄电池模块的情况下，也不会产生不必要的容量损耗，能够将电池剩余容量均衡化。

Description

蓄电池模块及具备其的蓄电池***
技术领域
本发明涉及蓄电池模块及具备其的蓄电池***，特别是涉及能够将电池剩余容量均衡化的蓄电池模块及具备其的蓄电池***。
背景技术
近年来，作为电动汽车、混合动力汽车等所使用的电源，广泛使用锂离子电池等的蓄电池。因为电动汽车、混合动力汽车等所使用的蓄电池正在寻求大电流且高电压，所以通常并联或串联连接地使用多个蓄电池模块(专利文献1)。
现有技术文献
专利文献
专利文献1：特开2016－146728号公报
发明内容
发明所要解决的课题
但是，当并联或串联连接地使用多个蓄电池模块时，往往会在蓄电池模块间在电池剩余容量上产生偏差。因为当在蓄电池模块间在电池剩余容量上产生了偏差时，就会发生过充电，或者产生一部分蓄电池模块提前劣化等问题，所以需要尽可能地将电池剩余容量均衡化。
作为将电池剩余容量均衡化的方法，想到的是在电池剩余容量多的蓄电池模块中进行内部放电的方法，但在该方法中，不仅会产生由内部放电引起的不必要的容量损耗、发热等，而且还需要追加内部放电机构，所以存在蓄电池模块大型化之类的问题。
因此，本发明的目的在于，提供一种蓄电池模块及具备其的蓄电池***，其不会产生不必要的容量损耗，能够将电池剩余容量均衡化。
用于解决课题的技术方案
本发明的蓄电池模块的特征为，具备：外部电源端子；至少一个蓄电池单体(cell)；监视电路，监视所述蓄电池单体的状态；开关电路，基于切换信号，将从所述外部电源端子及所述蓄电池单体供给的电力中的任一方供给到所述监视电路。
根据本发明，因为能够从外部电源和蓄电池单体这两种中有选择地(排他性)向监视电路供给电力，所以在电池剩余容量较少的情况下，利用外部电源使监视电路动作，在电池剩余容量较多的情况下，利用从内部的蓄电池单体供给的电力使监视电路动作。由此，即使在使用多个蓄电池模块的情况下，也不会产生不必要的容量损耗，能够将电池剩余容量均衡化。
在本发明中，所述切换信号也可以由所述监视电路生成。在这种情况下，本发明的蓄电池模块也可以还具备控制端子，所述监视电路也可以响应于经由所述控制端子从外部供给的控制信号，生成所述切换信号。据此，能够从外部切换监视电路的动作电源。
本发明的蓄电池***的特征为，具备：上述的多个蓄电池模块、向所述多个蓄电池模块的所述控制端子供给所述控制信号的控制器。根据本发明，能够通过控制器来切换监视电路的动作电源。
在本发明中，优选地，所述监视电路经由所述控制端子，将表示所述蓄电池单体的状态的状态信号供给到所述控制器，所述控制器基于从所述多个蓄电池模块供给的所述状态信号，生成所述控制信号。在这种情况下，所述控制器优选以所述多个蓄电池模块的电池剩余容量被均衡化的方式生成所述控制信号。据此，不会产生不必要的容量损耗，能够将电池剩余容量均衡化。
发明效果
这样，根据本发明，不会产生不必要的容量损耗，能够将电池剩余容量均衡化。
附图说明
图1是表示本发明优选的实施方式的蓄电池***的结构的方框图；
图2(a)表示的是并联连接多个蓄电池模块10的例子，图2(b)表示的是串联连接多个蓄电池模块10的例子。
图3是表示蓄电池模块10的结构的方框图；
图4是用于对控制器30的动作进行说明的流程图。
符号说明
10 蓄电池模块
11 正极端子
12 负极端子
13 外部电源端子
14 控制端子
20 外部电源
30 控制器
40 蓄电池单体
41 电压监视器
42 电流监视器
43 监视电路
44 通信电路
45 内部电源电路
50 开关电路
51、52 开关元件
CT 控制信号
P1 电力
ST 状态信号
SW1、SW2 切换信号
具体实施方式
下面，参照附图对本发明优选的实施方式进行详细说明。
图1是表示本发明优选的实施方式的蓄电池***的结构的方框图。
如图1所示，本实施方式的蓄电池***由多个蓄电池模块10、外部电源20及控制器30构成。蓄电池模块10具备：正极端子11、负极端子12、外部电源端子13及控制端子14。这些端子中的外部电源端子13与外部电源20连接，控制端子14与控制器30连接。正极端子11及负极端子12与未图示的负载或充电器连接。
关于多个蓄电池模块10和负载或充电器的连接方式，没有特别限定，可以如图2(a)那样并联连接，也可以如图2(b)那样串联连接。或者，还可以将多个蓄电池模块10分为几个组，然后将组内并联连接，并且将组间串联连接。
图3是表示蓄电池模块10的结构的方框图。
如图3所示，蓄电池模块10具备串联连接的多个蓄电池单体40。蓄电池单体40例如为层叠型锂离子电池。串联连接的多个蓄电池单体40的一端与正极端子11连接，另一端与负极端子12连接。由此，如果在正极端子11和负极端子12上连接负载，则能够将在蓄电池单体40充电的电荷供给到负载。另外，如果在正极端子11和负极端子12上连接充电器，则能够对蓄电池单体40进行充电。
各蓄电池单体40的电压通过电压监视器41来测量，并且流向蓄电池单体40的电流通过电流监视器42来测量。电压监视器41及电流监视器42与监视电路43连接。监视电路43是基于电压监视器41及电流监视器42的测量结果而监视各蓄电池单体40的单体电压及充放电电流的状态的电路，也一并具有根据测量、监视结果来判断各蓄电池单体40的状态，生成表示其判断结果的状态信号ST的功能。状态信号ST经由通信电路44及控制端子14反馈到控制器30。另一方面，从控制器30，经由控制端子14及通信电路44，向监视电路43供给控制信号CT。
经由开关电路50向监视电路43及通信电路44供给电力P1。开关电路50由开关元件51、52构成，分别通过从监视电路43供给的切换信号SW1、SW2来控制。虽然没有特别限定，但在本实施方式中，开关元件51、52均由N沟道型MOS晶体管构成。
开关元件51连接在外部电源端子13和监视电路43及通信电路44之间，在重置后的初始状态下，通过切换信号SW1的激活，维持在接通状态。另一方面，开关元件52连接在内部电源电路45和监视电路43及通信电路44之间，在重置后的初始状态下，通过切换信号SW2的非激活，维持在断开状态。内部电源电路45是与正极端子11连接的线性稳压器(regulator)或DC－DC转换器，接收从蓄电池单体40供给的电力，基于该电力，向监视电路43及通信电路44供给电力P1。
切换信号SW1、SW2在监视电路43的控制下，排他性地激活。由此，开关元件51、52中的任一方接通，另一方断开。而且，当开关元件51接通时，就经由外部电源端子13向监视电路43及通信电路44供给电力P1，所以蓄电池单体40的电池剩余容量不会因监视电路43及通信电路44的动作而减少。与此相对，当开关元件52接通时，就从蓄电池单体40向监视电路43及通信电路44供给电力P1，所以蓄电池单体40的电池剩余容量会因监视电路43及通信电路44的动作而减少。这种开关电路50的切换，即，切换信号SW1、SW2的生成基于从控制器30供给的控制信号CT，通过监视电路43来进行。
图4是用于对控制器30的动作进行说明的流程图。
在初始状态下，各蓄电池模块10所含的开关元件51接通，开关元件52断开(步骤S1)。在该状态下，控制器30与各蓄电池模块10进行通信(步骤S2)，通过从各蓄电池模块10取得状态信号ST，进行数据收集(步骤S3)。状态信号ST至少包含与该蓄电池模块10的电池剩余容量相关的信息，因此，当进行数据收集时，就能够计算出多个蓄电池模块10间的电池剩余容量的偏差。
然后，对多个蓄电池模块10间的电池剩余容量的偏差进行评价，判定该偏差是否在规定值以内(步骤S4)。其结果是，在偏差为规定值以内的情况下(步骤S5：Yes)，经过了一定时间以后(步骤S6)，返回到步骤S2。
与此相对，在偏差超过了规定值的情况下(步骤S5：No)，与电池剩余容量多的1或2个以上的蓄电池模块10进行通信(步骤S7)，进行开关电路50的切换(步骤S8)。开关电路50的切换是通过将切换信号SW2激活而使开关元件52接通的动作。这时，切换信号SW1未被激活，开关元件51设为断开状态。开关电路50的切换通过从控制器30向电池剩余容量多的蓄电池模块10供给控制信号CT来进行。开关电路50的切换除对电池剩余容量最多或者电池剩余容量比平均值多的蓄电池模块10进行以外，还可以对电池剩余容量超过了阈值的蓄电池模块10进行。另外，也可以向电池剩余容量少的蓄电池模块10供给指示重置的控制信号CT。但是，不需要对重置了开关电路50的蓄电池模块10重新进行重置。
如上所述，当开关元件52接通时，就从蓄电池单体40向监视电路43及通信电路44供给电力P1。因此，通过监视电路43及通信电路44的动作，蓄电池单体40的电池剩余容量减少(步骤S9)，结果是，各蓄电池模块10间的电池剩余容量的偏差缩小。而且，在由监视电路43维持该状态规定时间以后(步骤S10)，通过从控制器30供给指示重置的控制信号CT，来对各蓄电池模块10进行开关电路50的重置(步骤S11)。开关电路50的重置是通过将切换信号SW1激活而使开关元件51接通的动作。这时，切换信号SW2为非活性状态，开关元件52设为断开状态。但是，不需要对已经重置了开关电路50的蓄电池模块10重新进行重置。由此，返回到初始状态即步骤S1，重复上述的动作。通过重复这种动作，电池剩余容量的偏差缩小，被均衡化。
这样，本实施方式的蓄电池***在多个蓄电池模块10间产生了电池剩余容量的偏差的情况下，会通过电池剩余容量多的蓄电池模块10的内部电路(即，监视电路43及通信电路44)来消耗电力，所以不会产生不必要的容量损耗，能够将电池剩余容量均衡化。另外，因为由蓄电池模块10原本必要的内部电路进行电力消耗，所以也不需要另外追加内部放电机构。
以上对本发明优选的实施方式进行了说明，但本发明不局限于上述实施方式，在不脱离本发明宗旨的范围内，可进行种种变更，那些变更也包含在本发明的范围内，这是不言而喻的。
例如，在上述实施方式中，在初始状态下将开关元件51设为接通状态，但也可以相反地，在初始状态下将开关元件52设为接通状态。在这种情况下，只要在多个蓄电池模块10间的电池剩余容量上产生了超过规定值的偏差时，将电池剩余容量少的1或2个以上的蓄电池模块10的开关元件51接通，且将开关元件52断开即可。
另外，在上述实施方式中，通过控制器30的控制，进行开关电路50的切换，但也可以通过在多个蓄电池模块10间进行通信，不另外使用控制器30就能够进行开关电路50的切换。

Claims (6)

1.一种蓄电池模块，其特征在于，
具备：
外部电源端子；
至少一个蓄电池单体；
监视电路，监视所述蓄电池单体的状态；及
开关电路，基于切换信号，将从所述外部电源端子及所述蓄电池单体供给的电力中的任一方供给到所述监视电路。
2.根据权利要求1所述的蓄电池模块，其特征在于，
所述切换信号由所述监视电路生成。
3.根据权利要求2所述的蓄电池模块，其特征在于，
还具备控制端子，
所述监视电路响应于经由所述控制端子而从外部供给的控制信号而生成所述切换信号。
4.一种蓄电池***，其特征在于，
具备：
权利要求3所述的多个蓄电池模块；及
控制器，向所述多个蓄电池模块的所述控制端子供给所述控制信号。
5.根据权利要求4所述的蓄电池***，其特征在于，
所述监视电路经由所述控制端子而将表示所述蓄电池单体的状态的状态信号供给到所述控制器，
所述控制器基于从所述多个蓄电池模块供给的所述状态信号而生成所述控制信号。
6.根据权利要求5所述的蓄电池***，其特征在于，
所述控制器以所述多个蓄电池模块的电池剩余容量被均衡化的方式生成所述控制信号。
CN201810053038.3A 2017-01-20 2018-01-19 蓄电池模块及具备其的蓄电池*** Pending CN108336779A (zh)

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WO2016114116A1 (ja) * 2015-01-16 2016-07-21 パナソニックＩｐマネジメント株式会社 蓄電池制御システム

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