WO2017110498A1 - Storage battery system - Google Patents

Storage battery system Download PDF

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Publication number
WO2017110498A1
WO2017110498A1 PCT/JP2016/086547 JP2016086547W WO2017110498A1 WO 2017110498 A1 WO2017110498 A1 WO 2017110498A1 JP 2016086547 W JP2016086547 W JP 2016086547W WO 2017110498 A1 WO2017110498 A1 WO 2017110498A1
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Prior art keywords
storage battery
control unit
battery system
rectifying element
power
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PCT/JP2016/086547
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French (fr)
Japanese (ja)
Inventor
正直 島▲崎▼
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カルソニックカンセイ株式会社
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Publication of WO2017110498A1 publication Critical patent/WO2017110498A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric 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
    • B60R16/02—Electric 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
    • B60R16/03—Electric 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
    • B60R16/033—Electric 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
    • 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
    • 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
    • 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
    • H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • 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

Definitions

  • the present invention relates to a storage battery system.
  • Patent Documents 1 and 2 an in-vehicle power supply device that supplies power to an opening / closing means that switches between energization and interruption between an in-vehicle lead storage battery and a lithium ion battery by using only the lead storage battery is known (for example, Patent Documents 1 and 2).
  • An object of the present invention made in view of such circumstances is to provide a storage battery system capable of supplying power to a load even when power supply from one storage battery is cut off.
  • a storage battery system is: A first storage battery; A second storage battery; A switch having a switch control unit and a switching element opened and closed by the switch control unit, and an electrically driven switch;
  • the switch control unit is configured to be able to supply power from both the first storage battery and the second storage battery, and receives power from at least one of the first storage battery and the second storage battery to energize the switching element.
  • a storage battery system includes:
  • the switching element preferably includes a plurality of MOSFETs.
  • a storage battery system is: And a rectifying element having a first rectifying element and a second rectifying element, The first rectifying element is provided in a direction in which power is supplied from the first storage battery to the switch control unit, and the second rectifying element is provided in a direction in which power is supplied from the second storage battery to the switch control unit. It is preferable to be provided.
  • a storage battery system includes: Both the first rectifying element and the second rectifying element are preferably composed of a plurality of rectifying elements.
  • a storage battery system is: Furthermore, it has a control part, a sensor, and a notification part, When the control unit determines that power supply from the second storage battery is impossible based on the current value and the voltage value detected by the sensor connected to the second storage battery, It is preferable to notify the contents of the determination.
  • the switch control unit receives power from at least one of the first storage battery and the second storage battery. For this reason, even if the power supply from the second storage battery is cut off, the switch can be electrically driven by supplying power from the first storage battery to the switch control unit. Thus, it is possible to supply electric power to the load and operate the entire vehicle without stopping it.
  • the switching element includes a plurality of MOSFETs. For this reason, it is possible to distribute the power load.
  • the first rectifying element is provided in a direction in which power is supplied from the first storage battery to the switch control unit, and the second rectifying element is switch-controlled from the second storage battery. It is provided in a direction in which power is supplied to the unit. For this reason, for example, current does not flow from the first storage battery 1 to the second storage battery 2 or from the second storage battery 2 to the first storage battery 1, and power supply to the switch control unit is ensured.
  • each of the first rectifying element and the second rectifying element includes a plurality of rectifying elements. For this reason, a proof pressure can be raised.
  • the control unit can supply power from the second storage battery to other elements based on the current value and the voltage value detected by the sensor connected to the second storage battery.
  • the content of the determination is notified via the notification unit. For this reason, it is possible to notify the driver that an urgent measure of supplying power from the second storage battery to the switch control unit is being performed, and it is possible for the driver to take measures early.
  • FIG. 1 A solid line in FIG. 1 indicates a power line, and a broken line indicates an information transmission line.
  • the storage battery system 10 is mounted on a vehicle such as a hybrid vehicle (HEV vehicle).
  • HEV vehicle hybrid vehicle
  • the storage battery system 10 includes at least a first storage battery 1, a second storage battery 2, and a switch 4, and may further include a sensor 3, a load 5, a control unit 6, and a notification unit 7.
  • the first storage battery 1, the second storage battery 2, the switch 4 and the load 5 are connected in parallel.
  • the first storage battery 1 is, for example, a lithium ion battery.
  • the first storage battery 1 may also be configured by connecting in series one or more secondary batteries (cells) other than a lead storage battery, such as a lithium ion battery or a nickel hydride battery.
  • the positive terminal of the first storage battery 1 is connected to the switch control unit 4a and the switching element 4b, and the negative terminal is connected to the ground.
  • the first storage battery 1 can supply power to a switch control unit 4a described later, and can supply power to the load 5 and the like when a switching element 4b described later is energized.
  • the first storage battery 1 can also supply electric power to an auxiliary machine and an ECU (Engine Control Unit) while the engine drive (idling) is stopped.
  • the first storage battery 1 is connected in parallel with the second storage battery 2.
  • the second storage battery 2 is, for example, a lead storage battery. Although the 2nd storage battery 2 may be the same voltage as the 1st storage battery 1, or a different voltage, when it is a different voltage, a DC / DC converter is used.
  • the positive terminal of the second storage battery 2 is connected to the switch control unit 4a and the switching element 4b, and the negative terminal is connected to the ground.
  • the 2nd storage battery 2 can supply electric power to the switch control part 4a mentioned later.
  • the second storage battery 2 can also supply power to the load 5.
  • the second storage battery 2 is connected in parallel with the first storage battery 1.
  • Sensor 3 is a current sensor and a voltage sensor that detect values of current and voltage flowing through second storage battery 2. The sensor 3 outputs the detected information to the control unit 6.
  • the switch 4 has a switch control unit 4a and a switching element 4b opened and closed by the switch control unit 4a, and is electrically driven.
  • the switch control unit 4a described above is configured to be able to supply power from both the first storage battery 1 and the second storage battery 2.
  • the switch control unit 4 a can receive power from at least one of the first storage battery 1 and the second storage battery 2 and can open and close the switching element 4 b under the control of the control unit 6. That is, even if the power supply from the second storage battery 2 is interrupted for some reason, the switch control unit 4a can continue the opening / closing control of the switching element 4b by receiving the power supply from the first storage battery 1.
  • the aforementioned switching element 4b is connected in series with the first storage battery 1 and the second storage battery 2, and when the switching element 4b is opened (when turned off) by the control of the switch control unit 4a, the first storage battery 1 and the second storage battery 1 are connected. Power to and from the storage battery 2 is cut off.
  • the switching element 4b is closed by the control of the switch control unit 4a (when turned on), the switching element 4b is energized, and a current flows between the first storage battery 1 and the second storage battery 2.
  • the switching element 4b may be opened and closed as follows, for example. That is, the switching element 4b is closed when the voltage of the second storage battery 2 falls below a predetermined value, thereby providing an alternator (not shown, but provided on the side where the first storage battery 1 is connected as viewed from the switch 4) or Charging from the first storage battery 1 to the second storage battery 2 is performed, and overdischarge protection of the second storage battery 2 is performed. Similarly, the switching element 4b prevents the second storage battery 2 from being charged from the alternator or the first storage battery 1 by opening when the voltage of the second storage battery 2 exceeds another predetermined value. 2 overcharge protection.
  • the switching element 4b is composed of one or more MOSFETs (Metal, Oxide, Semiconductor, Field, Effect Transistor).
  • FIG. 2 is an enlarged view of region A in FIG.
  • the switching element 4b includes a plurality of (six) MOSFETs.
  • the switching element 4b is configured by connecting three sets of one set of MOSFETs facing left and right. As the number of the sets increases, the power load can be distributed.
  • the switch control unit 4a and the switching element 4b are connected by a plurality of transistors. The switching element 4b is energized under the control of the switch control unit 4a, and at this time, power supply from the alternator or the first storage battery 1 to the load 5 can be ensured.
  • An alternator is a generator that is mechanically connected to an engine started by a starter.
  • the alternator can generate electricity by driving the engine.
  • the alternator may generate power by regeneration when the vehicle is decelerated or the like.
  • the electric power generated by the alternator may be used for charging the first storage battery 1 and the second storage battery 2 after adjusting the output voltage by a regulator.
  • the load 5 is, for example, an audio, an air conditioner, a navigation system, or the like provided in the vehicle.
  • One end of the load 5 is connected to the sensor 3, the switch control unit 4a and the switching element 4b, and the other end is connected to the ground.
  • the load 5 operates by receiving power supply from the first storage battery 1 and the second storage battery 2 while the engine driving is stopped, and operates by receiving power supply from the alternator, the first storage battery 1 and the second storage battery 2 while driving the engine. To do.
  • the control unit 6 is a processor that includes an ECU provided in a vehicle, for example, and controls the overall operation of the storage battery system 10. For example, the control unit 6 acquires information on the current value and the voltage value from the sensor 3, and when the current value is 0 and the voltage value is 0 (cannot be acquired), the second storage battery 2 transfers to other elements. It is determined that power supply is impossible. For example, the power supply is impossible because the terminal of the second storage battery 2 is disconnected from the storage battery system 10. At this time, the control unit 6 notifies the notification unit 7 that power cannot be supplied from the second storage battery 2 to other elements.
  • control unit 6 controls opening and closing of the switching element 4b via the switch control unit 4a.
  • the notification unit 7 When the notification unit 7 obtains notification that power supply from the second storage battery 2 to other elements is impossible, the notification unit 7 notifies the driver of the vehicle to that effect. Specifically, the notification unit 7 notifies by turning on the lamp. As an alternative example, the notification unit 7 notifies the user that power supply is impossible due to a disconnection of the terminal or the like as a sound or an image output to a vehicle-mounted monitor.
  • the switch controller 4a can receive power from at least one of the first storage battery 1 and the second storage battery 2 to open and close the switching element 4b. Therefore, even if the power supply from the second storage battery 2 is cut off, the power can be supplied from the first storage battery 1 to the switch control unit 4a to open and close the switching element 4b. Accordingly, it is possible to supply electric power to the load 5 and operate the entire vehicle without stopping the system.
  • the control unit 6 notifies the driver via the notification unit 7 that power cannot be supplied from the second storage battery 2 to other elements.
  • FIG. 3 is a diagram showing an operation flow that the control unit 6 executes regularly or irregularly.
  • the control unit 6 can execute this operation flow both when the switching element 4b is open and when it is closed.
  • the control unit 6 determines whether or not the current value detected by the sensor 3 is 0 and the voltage value is 0 (step S1). When Yes in step S1, the control unit 6 determines that power supply from the second storage battery 2 to other elements is impossible (step S2). When No in step S1, the control unit 6 executes step S1.
  • Step S2 the control unit 6 notifies the content of the determination via the notification unit 7 (that is, that it is impossible to supply power from the second storage battery 2 to other elements) (Ste S3).
  • Step S3 the control unit 6 performs open / close control of the switching element 4b via the switch control unit 4a using the power supplied from at least one of the first storage battery 1 or the second storage battery 2 (step S4).
  • step S4 the notification unit 7 executes step S1.
  • the switch control unit 4a can receive power supply from the first storage battery 1 even if power supply from the second storage battery 2 to other elements is impossible.
  • the control unit 6 can notify the driver that power supply from the second storage battery 2 is impossible and can take early measures. . For example, it is desirable for the control unit 6 to promptly retreat the vehicle to a safe place and reconnect the terminals of the second storage battery 2.
  • FIG. 4 is a functional block diagram showing a schematic configuration of the storage battery system 10 according to a modification of the present invention.
  • the storage battery system 10 has a rectifying element 8 between the switch control unit 4 a and the first storage battery 1 and between the switch control unit 4 a and the second storage battery 2.
  • the first rectifying element 8a and the second rectifying element 8b are provided so that their cathodes face each other.
  • the description of the contents common to the above embodiment will be omitted.
  • the rectifying element 8 is a diode and includes a first rectifying element 8a and a second rectifying element 8b.
  • the first rectifying element 8a is provided between the switch control unit 4a and the first storage battery 1 in such a direction that power is supplied from the first storage battery 1 to the switch control unit 4a.
  • the first rectifying element 8a is composed of two rectifying elements, but the first rectifying element 8a may be composed of one or three or more rectifying elements. By providing a plurality of rectifying elements, the breakdown voltage can be increased.
  • the second rectifying element 8b is provided between the switch control unit 4a and the second storage battery 2 in such a direction that power is supplied from the second storage battery 2 to the switch control unit 4a.
  • the second rectifying element 8b is composed of two rectifying elements, but the second rectifying element 8b may be composed of one or three or more rectifying elements. By providing a plurality of rectifying elements, the breakdown voltage can be increased.
  • first rectifying element 8a and the second rectifying element 8b for example, current does not flow from the first storage battery 1 to the second storage battery 2 or from the second storage battery 2 to the first storage battery 1, and the switch controller 4a Power supply is secured.
  • the storage battery system 10 mounted on the hybrid vehicle has been described, but the present invention is not limited to this.
  • the storage battery system 10 may be mounted on an electric vehicle (EV vehicle).
  • EV vehicle electric vehicle

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  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
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  • Electrochemistry (AREA)
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Abstract

Provided is a storage battery system with which power can be supplied to a load even if the power supply from one storage battery is cut off. This storage battery system (10) has a first storage battery (1), a second storage battery (2), and an electrically driven switch (4) that has a switch control unit (4a) and a switching element (4b) that is opened/closed by the switch control unit (4a), wherein the first storage battery (1) and the second storage battery (2) are connected in parallel, the switch control unit (4a) is configured to be capable of supplying power from both the first storage battery (1) and the second storage battery (2), and power supply is received from the first storage battery (1) and/or the second storage battery (2) to energize the switching element (4b).

Description

蓄電池システムBattery system 関連出願へのクロスリファレンスCross-reference to related applications
　本出願は、日本国特許出願２０１５－２５４７８６号（２０１５年１２月２５日出願）の優先権を主張するものであり、当該出願の開示全体を、ここに参照のために取り込む。 This application claims the priority of Japanese Patent Application No. 2015-254786 (filed on Dec. 25, 2015), the entire disclosure of which is incorporated herein by reference.
　本発明は蓄電池システムに関する。 The present invention relates to a storage battery system.
　従来から、車載の鉛蓄電池とリチウムイオン電池との通電および遮断を切り替える開閉手段への電力供給を鉛蓄電池のみで行う車載電源装置が知られている（例えば特許文献１および２）。 2. Description of the Related Art Conventionally, an in-vehicle power supply device that supplies power to an opening / closing means that switches between energization and interruption between an in-vehicle lead storage battery and a lithium ion battery by using only the lead storage battery is known (for example, Patent Documents 1 and 2).
特開２０１１－０７８１４７号公報JP 2011-078147 A 特開２０１１－１７６９５８号公報JP 2011-176958 A
　ここで、鉛蓄電池の端子が外れる等の理由で鉛蓄電池から開閉手段への電力供給が絶たれると、車両全体のシステムが停止してしまう。 Here, if the power supply from the lead storage battery to the opening / closing means is cut off due to the disconnection of the terminal of the lead storage battery, the system of the entire vehicle is stopped.
　かかる事情に鑑みてなされた本発明の目的は、一の蓄電池からの電力供給が絶たれても、負荷へ電力を供給することが可能な蓄電池システムを提供することにある。 An object of the present invention made in view of such circumstances is to provide a storage battery system capable of supplying power to a load even when power supply from one storage battery is cut off.
　上記課題を解決するために本発明の第１の観点に係る蓄電池システムは、
　第１蓄電池と、
　第２蓄電池と、
　スイッチ制御部と前記スイッチ制御部により開閉されるスイッチング素子とを有し、電気駆動するスイッチと、
　を有する蓄電池システムにおいて、
　前記第１蓄電池と前記第２蓄電池とは並列接続され、
　前記スイッチ制御部は、前記第１蓄電池と前記第２蓄電池との双方より給電可能に構成され、前記第１蓄電池と前記第２蓄電池との少なくとも一方から電力供給を受けて前記スイッチング素子を通電させる。 In order to solve the above problems, a storage battery system according to the first aspect of the present invention is:
A first storage battery;
A second storage battery;
A switch having a switch control unit and a switching element opened and closed by the switch control unit, and an electrically driven switch;
In a storage battery system having
The first storage battery and the second storage battery are connected in parallel,
The switch control unit is configured to be able to supply power from both the first storage battery and the second storage battery, and receives power from at least one of the first storage battery and the second storage battery to energize the switching element. .
　上記課題を解決するために本発明の第２の観点に係る蓄電池システムは、
　前記スイッチング素子は複数個のＭＯＳＦＥＴを含むことが好ましい。 In order to solve the above-mentioned problem, a storage battery system according to a second aspect of the present invention includes:
The switching element preferably includes a plurality of MOSFETs.
　上記課題を解決するために本発明の第３の観点に係る蓄電池システムは、
　さらに、第１整流素子と第２整流素子とを有する整流素子を有し、
　前記第１整流素子は、前記第１蓄電池から前記スイッチ制御部に電力が供給される向きに設けられ、前記第２整流素子は前記第２蓄電池から前記スイッチ制御部に電力が供給される向きに設けられることが好ましい。 In order to solve the above problems, a storage battery system according to a third aspect of the present invention is:
And a rectifying element having a first rectifying element and a second rectifying element,
The first rectifying element is provided in a direction in which power is supplied from the first storage battery to the switch control unit, and the second rectifying element is provided in a direction in which power is supplied from the second storage battery to the switch control unit. It is preferable to be provided.
　上記課題を解決するために本発明の第４の観点に係る蓄電池システムは、
　前記第１整流素子および前記第２整流素子はいずれも、複数個の整流素子からなることが好ましい。 In order to solve the above-mentioned problem, a storage battery system according to a fourth aspect of the present invention includes:
Both the first rectifying element and the second rectifying element are preferably composed of a plurality of rectifying elements.
　上記課題を解決するために本発明の第５の観点に係る蓄電池システムは、
　さらに制御部と、センサと、報知部とを有し、
　前記制御部は、前記第２蓄電池に接続された前記センサが検出した電流値および電圧値に基づいて前記第２蓄電池からの電力供給が不可能であると判定したとき、前記報知部を介して前記判定の内容を報知することが好ましい。 In order to solve the above problems, a storage battery system according to a fifth aspect of the present invention is:
Furthermore, it has a control part, a sensor, and a notification part,
When the control unit determines that power supply from the second storage battery is impossible based on the current value and the voltage value detected by the sensor connected to the second storage battery, It is preferable to notify the contents of the determination.
　本発明の第１の観点に係る蓄電池システムによれば、スイッチ制御部は、第１蓄電池と第２蓄電池との少なくとも一方から電力供給を受ける。このため、第２蓄電池からの電力供給が絶たれても、第１蓄電池からスイッチ制御部に電力を供給してスイッチを電気駆動することが可能になる。もって負荷に電力を供給し、車両全体のシステムを停止させることなく動作させることが可能となる。 According to the storage battery system according to the first aspect of the present invention, the switch control unit receives power from at least one of the first storage battery and the second storage battery. For this reason, even if the power supply from the second storage battery is cut off, the switch can be electrically driven by supplying power from the first storage battery to the switch control unit. Thus, it is possible to supply electric power to the load and operate the entire vehicle without stopping it.
　本発明の第２の観点に係る蓄電池システムによれば、スイッチング素子は複数個のＭＯＳＦＥＴを含む。このため電力負荷を分散することが可能である。 According to the storage battery system according to the second aspect of the present invention, the switching element includes a plurality of MOSFETs. For this reason, it is possible to distribute the power load.
　本発明の第３の観点に係る蓄電池システムによれば、第１整流素子は、第１蓄電池からスイッチ制御部に電力が供給される向きに設けられ、第２整流素子は第２蓄電池からスイッチ制御部に電力が供給される向きに設けられる。このため、例えば第１蓄電池１から第２蓄電池２または第２蓄電池２から第１蓄電池１に電流が流れこむことがなく、スイッチ制御部への電力供給が確保される。 According to the storage battery system of the third aspect of the present invention, the first rectifying element is provided in a direction in which power is supplied from the first storage battery to the switch control unit, and the second rectifying element is switch-controlled from the second storage battery. It is provided in a direction in which power is supplied to the unit. For this reason, for example, current does not flow from the first storage battery 1 to the second storage battery 2 or from the second storage battery 2 to the first storage battery 1, and power supply to the switch control unit is ensured.
　本発明の第４の観点に係る蓄電池システムによれば、第１整流素子および第２整流素子はいずれも、複数個の整流素子からなる。このため、耐圧を上げることができる。 According to the storage battery system according to the fourth aspect of the present invention, each of the first rectifying element and the second rectifying element includes a plurality of rectifying elements. For this reason, a proof pressure can be raised.
　本発明の第５の観点に係る蓄電池システムによれば、制御部は、第２蓄電池に接続されたセンサが検出した電流値および電圧値に基づいて第２蓄電池から他の要素への電力供給が不可能であると判定したとき、報知部を介して当該判定の内容を報知する。このため、第２蓄電池からスイッチ制御部への電力供給という緊急的な処置が行われていることをドライバに報知することができ、ドライバに早期に対策をとらせることができる。 According to the storage battery system of the fifth aspect of the present invention, the control unit can supply power from the second storage battery to other elements based on the current value and the voltage value detected by the sensor connected to the second storage battery. When it is determined that it is impossible, the content of the determination is notified via the notification unit. For this reason, it is possible to notify the driver that an urgent measure of supplying power from the second storage battery to the switch control unit is being performed, and it is possible for the driver to take measures early.
本発明の実施形態に係る蓄電池システムの概略構成を示す機能ブロック図である。It is a functional block diagram which shows schematic structure of the storage battery system which concerns on embodiment of this invention. 図１の領域Ａの拡大図である。It is an enlarged view of the area | region A of FIG. 図１の制御部が実行する動作フローを示す図である。It is a figure which shows the operation | movement flow which the control part of FIG. 1 performs. 本発明の変形例に係る蓄電池システムの概略構成を示す機能ブロック図である。It is a functional block diagram which shows schematic structure of the storage battery system which concerns on the modification of this invention.
　以下、本発明の実施形態を説明する。 Hereinafter, embodiments of the present invention will be described.
　はじめに図１を参照して、本発明の実施形態に係る蓄電池システム１０の概略構成を説明する。図１の実線は電力ラインを示し、破線は情報伝達ラインを示す。蓄電池システム１０は、例えばハイブリッド車（ＨＥＶ車）等の車両に搭載される。蓄電池システム１０の概略構成を説明するが、蓄電池システム１０の他の機能を排除したものではないことに留意されたい。 First, a schematic configuration of a storage battery system 10 according to an embodiment of the present invention will be described with reference to FIG. A solid line in FIG. 1 indicates a power line, and a broken line indicates an information transmission line. The storage battery system 10 is mounted on a vehicle such as a hybrid vehicle (HEV vehicle). Although a schematic configuration of the storage battery system 10 will be described, it should be noted that other functions of the storage battery system 10 are not excluded.
　蓄電池システム１０は、少なくとも第１蓄電池１と第２蓄電池２とスイッチ４とを有し、さらに、センサ３と負荷５と制御部６と報知部７とを有してもよい。第１蓄電池１と第２蓄電池２とスイッチ４と負荷５とは並列に接続される。 The storage battery system 10 includes at least a first storage battery 1, a second storage battery 2, and a switch 4, and may further include a sensor 3, a load 5, a control unit 6, and a notification unit 7. The first storage battery 1, the second storage battery 2, the switch 4 and the load 5 are connected in parallel.
　第１蓄電池１は、例えばリチウムイオン電池である。第１蓄電池１はまた、例えばリチウムイオン電池やニッケル水素電池等、鉛蓄電池以外の１以上の二次電池（セル）が直列に接続されて構成されてもよい。第１蓄電池１のプラス端子はスイッチ制御部４ａおよびスイッチング素子４ｂと接続され、マイナス端子はグランドに接続される。第１蓄電池１は後述するスイッチ制御部４ａへ電力を供給可能であり、また、後述するスイッチング素子４ｂが通電しているとき、負荷５等に対して電力を供給可能である。第１蓄電池１はまた、エンジン駆動（アイドリング）の停止中に、補機およびＥＣＵ（Ｅｎｇｉｎｅ　Ｃｏｎｔｏｒｌ　Ｕｎｉｔ）等に対して電力を供給可能である。第１蓄電池１は第２蓄電池２と並列接続される。 The first storage battery 1 is, for example, a lithium ion battery. The first storage battery 1 may also be configured by connecting in series one or more secondary batteries (cells) other than a lead storage battery, such as a lithium ion battery or a nickel hydride battery. The positive terminal of the first storage battery 1 is connected to the switch control unit 4a and the switching element 4b, and the negative terminal is connected to the ground. The first storage battery 1 can supply power to a switch control unit 4a described later, and can supply power to the load 5 and the like when a switching element 4b described later is energized. The first storage battery 1 can also supply electric power to an auxiliary machine and an ECU (Engine Control Unit) while the engine drive (idling) is stopped. The first storage battery 1 is connected in parallel with the second storage battery 2.
　第２蓄電池２は、例えば鉛蓄電池である。第２蓄電池２は第１蓄電池１と同じ電圧であっても異なる電圧であってもよいが、異なる電圧である場合はＤＣ／ＤＣコンバータを用いる。第２蓄電池２のプラス端子はスイッチ制御部４ａおよびスイッチング素子４ｂと接続され、マイナス端子はグランドに接続される。第２蓄電池２は後述するスイッチ制御部４ａに電力を供給可能である。第２蓄電池２はまた、負荷５に対して電力を供給可能である。第２蓄電池２は第１蓄電池１と並列接続される。 The second storage battery 2 is, for example, a lead storage battery. Although the 2nd storage battery 2 may be the same voltage as the 1st storage battery 1, or a different voltage, when it is a different voltage, a DC / DC converter is used. The positive terminal of the second storage battery 2 is connected to the switch control unit 4a and the switching element 4b, and the negative terminal is connected to the ground. The 2nd storage battery 2 can supply electric power to the switch control part 4a mentioned later. The second storage battery 2 can also supply power to the load 5. The second storage battery 2 is connected in parallel with the first storage battery 1.
　センサ３は、第２蓄電池２を流れる電流および電圧の値を検出する、電流センサおよび電圧センサである。センサ３は、検出した情報を制御部６に出力する。 Sensor 3 is a current sensor and a voltage sensor that detect values of current and voltage flowing through second storage battery 2. The sensor 3 outputs the detected information to the control unit 6.
　スイッチ４は、スイッチ制御部４ａと、スイッチ制御部４ａにより開閉されるスイッチング素子４ｂとを有し、電気駆動する。 The switch 4 has a switch control unit 4a and a switching element 4b opened and closed by the switch control unit 4a, and is electrically driven.
　前述したスイッチ制御部４ａは、第１蓄電池１と第２蓄電池２との双方より給電可能に構成される。スイッチ制御部４ａは、第１蓄電池１と第２蓄電池２との少なくとも一方から電力供給を受け、制御部６による制御によりスイッチング素子４ｂの開閉を行うことが可能である。すなわち、第２蓄電池２からの電力供給が何らかの理由で途絶えたとしても、スイッチ制御部４ａは第１蓄電池１から電力供給を受けることでスイッチング素子４ｂの開閉制御を継続することができる。 The switch control unit 4a described above is configured to be able to supply power from both the first storage battery 1 and the second storage battery 2. The switch control unit 4 a can receive power from at least one of the first storage battery 1 and the second storage battery 2 and can open and close the switching element 4 b under the control of the control unit 6. That is, even if the power supply from the second storage battery 2 is interrupted for some reason, the switch control unit 4a can continue the opening / closing control of the switching element 4b by receiving the power supply from the first storage battery 1.
　前述したスイッチング素子４ｂは第１蓄電池１および第２蓄電池２と直列に接続され、スイッチ制御部４ａの制御によりスイッチング素子４ｂが開かれたとき（ＯＦＦになったとき）第１蓄電池１と第２蓄電池２との間の電力は遮断される。スイッチ制御部４ａの制御によりスイッチング素子４ｂが閉じられたとき（ＯＮになったとき）スイッチング素子４ｂは通電し第１蓄電池１と第２蓄電池２との間には電流が流れる。 The aforementioned switching element 4b is connected in series with the first storage battery 1 and the second storage battery 2, and when the switching element 4b is opened (when turned off) by the control of the switch control unit 4a, the first storage battery 1 and the second storage battery 1 are connected. Power to and from the storage battery 2 is cut off. When the switching element 4b is closed by the control of the switch control unit 4a (when turned on), the switching element 4b is energized, and a current flows between the first storage battery 1 and the second storage battery 2.
　スイッチング素子４ｂは、例えば以下のように開閉してもよい。すなわち、スイッチング素子４ｂは、第２蓄電池２の電圧が所定値を下回ったときに閉じることによって、オルタネータ（図示しないが、スイッチ４から見て第１蓄電池１が接続される側に設けられる）または第１蓄電池１から第２蓄電池２への充電を行い、第２蓄電池２の過放電保護を行う。同様にスイッチング素子４ｂは、第２蓄電池２の電圧が別の所定値を上回ったときに開くことによって、オルタネータまたは第１蓄電池１から第２蓄電池２へ充電が行われることを防ぎ、第２蓄電池２の過充電保護を行う。 The switching element 4b may be opened and closed as follows, for example. That is, the switching element 4b is closed when the voltage of the second storage battery 2 falls below a predetermined value, thereby providing an alternator (not shown, but provided on the side where the first storage battery 1 is connected as viewed from the switch 4) or Charging from the first storage battery 1 to the second storage battery 2 is performed, and overdischarge protection of the second storage battery 2 is performed. Similarly, the switching element 4b prevents the second storage battery 2 from being charged from the alternator or the first storage battery 1 by opening when the voltage of the second storage battery 2 exceeds another predetermined value. 2 overcharge protection.
　スイッチング素子４ｂは１つ以上のＭＯＳＦＥＴ(Metal Oxide Semiconductor Field Effect Transistor)で構成される。図２は図１の領域Ａの拡大図である。図２に示すように本実施形態においてスイッチング素子４ｂは複数個の（６つの）ＭＯＳＦＥＴを含む。図２に示すようにスイッチング素子４ｂは、互いに左右に向かい合う１組のＭＯＳＦＥＴを３組接続して構成される。当該組の数が多いほど、電力負荷を分散することが可能である。スイッチ制御部４ａとスイッチング素子４ｂとは複数個のトランジスタによって接続される。スイッチング素子４ｂは、スイッチ制御部４ａによる制御によって通電し、このときオルタネータまたは第１蓄電池１等から負荷５への電力供給を確保することができる。 The switching element 4b is composed of one or more MOSFETs (Metal, Oxide, Semiconductor, Field, Effect Transistor). FIG. 2 is an enlarged view of region A in FIG. As shown in FIG. 2, in this embodiment, the switching element 4b includes a plurality of (six) MOSFETs. As shown in FIG. 2, the switching element 4b is configured by connecting three sets of one set of MOSFETs facing left and right. As the number of the sets increases, the power load can be distributed. The switch control unit 4a and the switching element 4b are connected by a plurality of transistors. The switching element 4b is energized under the control of the switch control unit 4a, and at this time, power supply from the alternator or the first storage battery 1 to the load 5 can be ensured.
　オルタネータとは発電機であって、スタータによって始動されたエンジンに機械的に接続される。オルタネータはエンジンの駆動によって発電可能である。代替例としてオルタネータは車両の減速時等に回生によって発電してもよい。オルタネータで発電された電力はレギュレータで出力電圧を調整されて第１蓄電池１および第２蓄電池２の充電に使用されてもよい。 An alternator is a generator that is mechanically connected to an engine started by a starter. The alternator can generate electricity by driving the engine. As an alternative, the alternator may generate power by regeneration when the vehicle is decelerated or the like. The electric power generated by the alternator may be used for charging the first storage battery 1 and the second storage battery 2 after adjusting the output voltage by a regulator.
　図１を再度参照するに、負荷５は、例えば車両に備えられたオーディオ、エアコンおよびナビゲーションシステム等である。負荷５の一端はセンサ３、スイッチ制御部４ａおよびスイッチング素子４ｂに接続され、もう一端はグランドに接続される。負荷５は、エンジン駆動の停止中に第１蓄電池１及び第２蓄電池２から電力供給を受けて動作し、エンジン駆動中にオルタネータ、第１蓄電池１および第２蓄電池２から電力供給を受けて動作する。 Referring to FIG. 1 again, the load 5 is, for example, an audio, an air conditioner, a navigation system, or the like provided in the vehicle. One end of the load 5 is connected to the sensor 3, the switch control unit 4a and the switching element 4b, and the other end is connected to the ground. The load 5 operates by receiving power supply from the first storage battery 1 and the second storage battery 2 while the engine driving is stopped, and operates by receiving power supply from the alternator, the first storage battery 1 and the second storage battery 2 while driving the engine. To do.
　制御部６は、例えば車両に備えられたＥＣＵを含んで構成され、蓄電池システム１０の動作全体を制御するプロセッサである。例えば制御部６は、センサ３から電流値および電圧値の情報を取得して、電流値が０で且つ電圧値が０（取得不可）となったとき、第２蓄電池２から他の要素への電力供給が不可能であると判定する。電力供給が不可能であることは例えば、第２蓄電池２の端子が蓄電池システム１０から外れたこと等である。このとき制御部６は、第２蓄電池２から他の要素への電力供給が不可能であることを報知部７に報知する。 The control unit 6 is a processor that includes an ECU provided in a vehicle, for example, and controls the overall operation of the storage battery system 10. For example, the control unit 6 acquires information on the current value and the voltage value from the sensor 3, and when the current value is 0 and the voltage value is 0 (cannot be acquired), the second storage battery 2 transfers to other elements. It is determined that power supply is impossible. For example, the power supply is impossible because the terminal of the second storage battery 2 is disconnected from the storage battery system 10. At this time, the control unit 6 notifies the notification unit 7 that power cannot be supplied from the second storage battery 2 to other elements.
　また、制御部６はスイッチ制御部４ａを介して、スイッチング素子４ｂの開閉を制御する。 Further, the control unit 6 controls opening and closing of the switching element 4b via the switch control unit 4a.
　報知部７は、第２蓄電池２から他の要素への電力供給が不可能であるとの報知を取得すると、その旨を車両のドライバに報知する。具体的には報知部７は、ランプを点灯させることで報知する。代替例として報知部７は、端子が外れる等の理由により電力供給が不可能であることを、音声として報知しまたは画像として車載のモニタに出力して報知する。 When the notification unit 7 obtains notification that power supply from the second storage battery 2 to other elements is impossible, the notification unit 7 notifies the driver of the vehicle to that effect. Specifically, the notification unit 7 notifies by turning on the lamp. As an alternative example, the notification unit 7 notifies the user that power supply is impossible due to a disconnection of the terminal or the like as a sound or an image output to a vehicle-mounted monitor.
　上記実施形態の通り、スイッチ制御部４ａは第１蓄電池１と第２蓄電池２の少なくとも一方から電力供給を受け、スイッチング素子４ｂの開閉を行うことが可能である。したがって、第２蓄電池２からの電力供給が絶たれても、第１蓄電池１からスイッチ制御部４ａに電力を供給してスイッチング素子４ｂを開閉することが可能になる。もって負荷５に電力を供給し、車両全体のシステムを停止させることなく動作させることが可能となる。第２蓄電池２からの電力供給が絶たれたとき、センサ３からの電流値および電圧値は共に０となる。このとき制御部６は、第２蓄電池２から他の要素への電力供給が不可能であることを、報知部７を介してドライバに報知する。 As described in the above embodiment, the switch controller 4a can receive power from at least one of the first storage battery 1 and the second storage battery 2 to open and close the switching element 4b. Therefore, even if the power supply from the second storage battery 2 is cut off, the power can be supplied from the first storage battery 1 to the switch control unit 4a to open and close the switching element 4b. Accordingly, it is possible to supply electric power to the load 5 and operate the entire vehicle without stopping the system. When the power supply from the second storage battery 2 is cut off, both the current value and voltage value from the sensor 3 become zero. At this time, the control unit 6 notifies the driver via the notification unit 7 that power cannot be supplied from the second storage battery 2 to other elements.
　図３は、当該制御部６が定期的または不定期的に実行する動作フローを示す図である。制御部６はこの動作フローを、スイッチング素子４ｂが開いているときと閉じているときとのいずれにおいても実行可能である。 FIG. 3 is a diagram showing an operation flow that the control unit 6 executes regularly or irregularly. The control unit 6 can execute this operation flow both when the switching element 4b is open and when it is closed.
　制御部６は、センサ３で検出された電流値が０であり且つ電圧値が０となったか否かを判定する（ステップＳ１）。ステップＳ１でＹｅｓのとき、制御部６は、第２蓄電池２から他の要素への電力供給が不可能であると判定する（ステップＳ２）。ステップＳ１でＮｏのとき、制御部６はステップＳ１を実行する。 The control unit 6 determines whether or not the current value detected by the sensor 3 is 0 and the voltage value is 0 (step S1). When Yes in step S1, the control unit 6 determines that power supply from the second storage battery 2 to other elements is impossible (step S2). When No in step S1, the control unit 6 executes step S1.
　ステップＳ２を実行した後、制御部６は、報知部７を介して、当該判定の内容を（すなわち、第２蓄電池２から他の要素への電力供給が不可能であることを）報知する（ステップＳ３）。次いで制御部６は、第１蓄電池１または第２蓄電池２の少なくとも一方から供給された電力を用いて、スイッチ制御部４ａを介してスイッチング素子４ｂの開閉制御を行う（ステップＳ４）。ステップＳ４の後、報知部７はステップＳ１を実行する。 After executing Step S2, the control unit 6 notifies the content of the determination via the notification unit 7 (that is, that it is impossible to supply power from the second storage battery 2 to other elements) ( Step S3). Next, the control unit 6 performs open / close control of the switching element 4b via the switch control unit 4a using the power supplied from at least one of the first storage battery 1 or the second storage battery 2 (step S4). After step S4, the notification unit 7 executes step S1.
　本実施形態において、第２蓄電池２から他の要素への電力供給が不可能であってもスイッチ制御部４ａは第１蓄電池１から電力供給を受けることができる。しかしながら、このような電力供給処理は緊急的処置であるため、制御部６はドライバへ、第２蓄電池２からの電力供給が不可能であることを報知するとともに早期に対策をとらせることができる。例えば制御部６は安全な場所へ車両を一時的に退避して第２蓄電池２の端子を再接続するように促すことが望ましい。 In this embodiment, the switch control unit 4a can receive power supply from the first storage battery 1 even if power supply from the second storage battery 2 to other elements is impossible. However, since such power supply processing is an urgent measure, the control unit 6 can notify the driver that power supply from the second storage battery 2 is impossible and can take early measures. . For example, it is desirable for the control unit 6 to promptly retreat the vehicle to a safe place and reconnect the terminals of the second storage battery 2.
　図４は、本発明の変形例に係る蓄電池システム１０の概略構成を示す機能ブロック図である。上記実施形態と異なる点は、蓄電池システム１０がスイッチ制御部４ａと第１蓄電池１との間およびスイッチ制御部４ａと第２蓄電池２との間に整流素子８を有することである。別の異なる点は、第１整流素子８ａと第２整流素子８ｂとが、それらのカソードが向かい合うように設けられることである。以下、上記実施形態と共通する内容の説明は省略する。 FIG. 4 is a functional block diagram showing a schematic configuration of the storage battery system 10 according to a modification of the present invention. The difference from the above embodiment is that the storage battery system 10 has a rectifying element 8 between the switch control unit 4 a and the first storage battery 1 and between the switch control unit 4 a and the second storage battery 2. Another difference is that the first rectifying element 8a and the second rectifying element 8b are provided so that their cathodes face each other. Hereinafter, the description of the contents common to the above embodiment will be omitted.
　整流素子８はダイオードであり、第１整流素子８ａおよび第２整流素子８ｂを有する。 The rectifying element 8 is a diode and includes a first rectifying element 8a and a second rectifying element 8b.
　第１整流素子８ａは、第１蓄電池１からスイッチ制御部４ａに電力が供給されるような向きでスイッチ制御部４ａと第１蓄電池１との間に設けられる。図３において第１整流素子８ａは２つの整流素子からなっているが、第１整流素子８ａは１つのまたは３つ以上の複数個の整流素子からなってもよい。複数個の整流素子を設けることにより、耐圧を上げることが可能となる。 The first rectifying element 8a is provided between the switch control unit 4a and the first storage battery 1 in such a direction that power is supplied from the first storage battery 1 to the switch control unit 4a. In FIG. 3, the first rectifying element 8a is composed of two rectifying elements, but the first rectifying element 8a may be composed of one or three or more rectifying elements. By providing a plurality of rectifying elements, the breakdown voltage can be increased.
　第２整流素子８ｂは、第２蓄電池２からスイッチ制御部４ａに電力が供給されるような向きでスイッチ制御部４ａと第２蓄電池２との間に設けられる。図３において第２整流素子８ｂは２つの整流素子からなっているが、第２整流素子８ｂは１つのまたは３つ以上の複数個の整流素子からなってもよい。複数個の整流素子を設けることにより、耐圧を上げることが可能となる。 The second rectifying element 8b is provided between the switch control unit 4a and the second storage battery 2 in such a direction that power is supplied from the second storage battery 2 to the switch control unit 4a. In FIG. 3, the second rectifying element 8b is composed of two rectifying elements, but the second rectifying element 8b may be composed of one or three or more rectifying elements. By providing a plurality of rectifying elements, the breakdown voltage can be increased.
　第１整流素子８ａおよび第２整流素子８ｂにより、例えば第１蓄電池１から第２蓄電池２に、または第２蓄電池２から第１蓄電池１に電流が流れこむことがなく、スイッチ制御部４ａへの電力供給が確保される。 With the first rectifying element 8a and the second rectifying element 8b, for example, current does not flow from the first storage battery 1 to the second storage battery 2 or from the second storage battery 2 to the first storage battery 1, and the switch controller 4a Power supply is secured.
　本発明を諸図面、実施形態、変形例に基づき説明してきたが、当業者であれば本開示に基づき種々の変形や修正を行うことが容易であることに注意されたい。したがって、これらの変形や修正は本発明の範囲に含まれることに留意されたい。例えば、各手段、各ステップ等に含まれる機能等は論理的に矛盾しないように再配置可能であり、複数の手段やステップ等を１つに組み合わせたり、或いは分割したりすることが可能である。 Although the present invention has been described based on the drawings, embodiments, and modifications, it should be noted that those skilled in the art can easily make various modifications and corrections based on the present disclosure. Therefore, it should be noted that these variations and modifications are included in the scope of the present invention. For example, the functions included in each means, each step, etc. can be rearranged so that there is no logical contradiction, and a plurality of means, steps, etc. can be combined or divided into one. .
　また、上述した実施形態において、ハイブリッド車に搭載される蓄電池システム１０について説明したが、これに限られない。例えば、蓄電池システム１０は電気自動車（ＥＶ車）に搭載されてもよい。 In the above-described embodiment, the storage battery system 10 mounted on the hybrid vehicle has been described, but the present invention is not limited to this. For example, the storage battery system 10 may be mounted on an electric vehicle (EV vehicle).
１　　第１蓄電池
２　　第２蓄電池
３　　センサ
４　　スイッチ
４ａ　スイッチ制御部
４ｂ　スイッチング素子
５　　負荷
６　　制御部
７　　報知部
８　　整流素子
８ａ　第１整流素子
８ｂ　第２整流素子
１０　蓄電池システム DESCRIPTION OF SYMBOLS 1 1st storage battery 2 2nd storage battery 3 Sensor 4 Switch 4a Switch control part 4b Switching element 5 Load 6 Control part 7 Notification part 8 Rectification element 8a First rectification element 8b Second rectification element 10 Storage battery system

Claims (12)

  1. 　第１蓄電池と、
    　第２蓄電池と、
    　スイッチ制御部と前記スイッチ制御部により開閉されるスイッチング素子とを有し、電気駆動するスイッチと、
    　を有する蓄電池システムにおいて、
    　前記第１蓄電池と前記第２蓄電池とは並列接続され、
    　前記スイッチ制御部は、前記第１蓄電池と前記第２蓄電池との双方より給電可能に構成され、前記第１蓄電池と前記第２蓄電池との少なくとも一方から電力供給を受けて前記スイッチング素子を通電させる蓄電池システム。     A first storage battery;
    A second storage battery;
    A switch having a switch control unit and a switching element opened and closed by the switch control unit, and an electrically driven switch;
    In a storage battery system having
    The first storage battery and the second storage battery are connected in parallel,
    The switch control unit is configured to be able to supply power from both the first storage battery and the second storage battery, and receives power from at least one of the first storage battery and the second storage battery to energize the switching element. Storage battery system.
  2. 　請求項１に記載の蓄電池システムにおいて、
    　前記スイッチング素子は複数個のＭＯＳＦＥＴを含む、蓄電池システム。     The storage battery system according to claim 1,
    The storage battery system, wherein the switching element includes a plurality of MOSFETs.
  3. 　請求項１に記載の蓄電池システムにおいて、
    　さらに、第１整流素子と第２整流素子とを有する整流素子を有し、
    　前記第１整流素子は、前記第１蓄電池から前記スイッチ制御部に電力が供給される向きに設けられ、前記第２整流素子は前記第２蓄電池から前記スイッチ制御部に電力が供給される向きに設けられる、蓄電池システム。     The storage battery system according to claim 1,
    And a rectifying element having a first rectifying element and a second rectifying element,
    The first rectifying element is provided in a direction in which power is supplied from the first storage battery to the switch control unit, and the second rectifying element is provided in a direction in which power is supplied from the second storage battery to the switch control unit. A storage battery system is provided.
  4. 　請求項２に記載の蓄電池システムにおいて、
    　さらに、第１整流素子と第２整流素子とを有する整流素子を有し、
    　前記第１整流素子は、前記第１蓄電池から前記スイッチ制御部に電力が供給される向きに設けられ、前記第２整流素子は前記第２蓄電池から前記スイッチ制御部に電力が供給される向きに設けられる、蓄電池システム。     The storage battery system according to claim 2,
    And a rectifying element having a first rectifying element and a second rectifying element,
    The first rectifying element is provided in a direction in which power is supplied from the first storage battery to the switch control unit, and the second rectifying element is provided in a direction in which power is supplied from the second storage battery to the switch control unit. A storage battery system is provided.
  5. 　請求項３に記載の蓄電池システムにおいて、
    　前記第１整流素子および前記第２整流素子はいずれも、複数個の整流素子からなる、蓄電池システム。     The storage battery system according to claim 3,
    Each of the first rectifying element and the second rectifying element is a storage battery system including a plurality of rectifying elements.
  6. 　請求項４に記載の蓄電池システムにおいて、
    　前記第１整流素子および前記第２整流素子はいずれも、複数個の整流素子からなる、蓄電池システム。     The storage battery system according to claim 4,
    Each of the first rectifying element and the second rectifying element is a storage battery system including a plurality of rectifying elements.
  7. 　請求項１に記載の蓄電池システムにおいて、
    　さらに制御部と、センサと、報知部とを有し、
    　前記制御部は、前記第２蓄電池に接続された前記センサが検出した電流値および電圧値に基づいて前記第２蓄電池からの電力供給が不可能であると判定したとき、前記報知部を介して前記判定の内容を報知する、蓄電池システム。     The storage battery system according to claim 1,
    Furthermore, it has a control part, a sensor, and a notification part,
    When the control unit determines that power supply from the second storage battery is impossible based on the current value and the voltage value detected by the sensor connected to the second storage battery, A storage battery system for informing the contents of the determination.
  8. 　請求項２に記載の蓄電池システムにおいて、
    　さらに制御部と、センサと、報知部とを有し、
    　前記制御部は、前記第２蓄電池に接続された前記センサが検出した電流値および電圧値に基づいて前記第２蓄電池からの電力供給が不可能であると判定したとき、前記報知部を介して前記判定の内容を報知する、蓄電池システム。     The storage battery system according to claim 2,
    Furthermore, it has a control part, a sensor, and a notification part,
    When the control unit determines that power supply from the second storage battery is impossible based on the current value and the voltage value detected by the sensor connected to the second storage battery, A storage battery system for informing the contents of the determination.
  9. 　請求項３に記載の蓄電池システムにおいて、
    　さらに制御部と、センサと、報知部とを有し、
    　前記制御部は、前記第２蓄電池に接続された前記センサが検出した電流値および電圧値に基づいて前記第２蓄電池からの電力供給が不可能であると判定したとき、前記報知部を介して前記判定の内容を報知する、蓄電池システム。     The storage battery system according to claim 3,
    Furthermore, it has a control part, a sensor, and a notification part,
    When the control unit determines that power supply from the second storage battery is impossible based on the current value and the voltage value detected by the sensor connected to the second storage battery, A storage battery system for informing the contents of the determination.
  10. 　請求項４に記載の蓄電池システムにおいて、
    　さらに制御部と、センサと、報知部とを有し、
    　前記制御部は、前記第２蓄電池に接続された前記センサが検出した電流値および電圧値に基づいて前記第２蓄電池からの電力供給が不可能であると判定したとき、前記報知部を介して前記判定の内容を報知する、蓄電池システム。     The storage battery system according to claim 4,
    Furthermore, it has a control part, a sensor, and a notification part,
    When the control unit determines that power supply from the second storage battery is impossible based on the current value and the voltage value detected by the sensor connected to the second storage battery, A storage battery system for informing the contents of the determination.
  11. 　請求項５に記載の蓄電池システムにおいて、
    　さらに制御部と、センサと、報知部とを有し、
    　前記制御部は、前記第２蓄電池に接続された前記センサが検出した電流値および電圧値に基づいて前記第２蓄電池からの電力供給が不可能であると判定したとき、前記報知部を介して前記判定の内容を報知する、蓄電池システム。     The storage battery system according to claim 5,
    Furthermore, it has a control part, a sensor, and a notification part,
    When the control unit determines that power supply from the second storage battery is impossible based on the current value and the voltage value detected by the sensor connected to the second storage battery, A storage battery system for informing the contents of the determination.
  12. 　請求項６に記載の蓄電池システムにおいて、
    　さらに制御部と、センサと、報知部とを有し、
    　前記制御部は、前記第２蓄電池に接続された前記センサが検出した電流値および電圧値に基づいて前記第２蓄電池からの電力供給が不可能であると判定したとき、前記報知部を介して前記判定の内容を報知する、蓄電池システム。     The storage battery system according to claim 6,
    Furthermore, it has a control part, a sensor, and a notification part,
    When the control unit determines that power supply from the second storage battery is impossible based on the current value and the voltage value detected by the sensor connected to the second storage battery, A storage battery system for informing the contents of the determination.
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