WO2017098846A1 - Charging device and charging control method - Google Patents
Charging device and charging control method Download PDFInfo
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- WO2017098846A1 WO2017098846A1 PCT/JP2016/083007 JP2016083007W WO2017098846A1 WO 2017098846 A1 WO2017098846 A1 WO 2017098846A1 JP 2016083007 W JP2016083007 W JP 2016083007W WO 2017098846 A1 WO2017098846 A1 WO 2017098846A1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/18—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for batteries; for accumulators
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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
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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
- H02J1/00—Circuit arrangements for dc mains or dc distribution networks
- H02J1/10—Parallel operation of dc sources
- H02J1/12—Parallel operation of dc generators with converters, e.g. with mercury-arc rectifier
Definitions
- the present invention relates to a charging device and a charging control method.
- Several power supply units may be mounted in the inside of a charging device.
- the operation of the power supply unit in which the abnormality is detected is stopped, and charging is continued only with the normal power supply unit.
- Patent Documents 1 to 3 are known as related techniques.
- the abnormality may be detected in all the power supply units.
- the charging by the charging device is stopped.
- An object according to one aspect of the present invention is to provide a charging device capable of performing charging as much as possible regardless of whether an abnormality detected in a power supply unit is caused by an internal factor or an external factor of a power supply unit. It is to be.
- a charging device includes a plurality of power supply units and a charge control unit.
- the plurality of power supply units execute a charging operation of converting the input AC power into DC power and outputting the DC power.
- the charge control unit includes all the power supply units in which the abnormality is detected and the power supply units in which the abnormality is not detected when an abnormality is detected in a predetermined number or more of power supply units larger than 1 among the plurality of power supply units. Stop the charging operation of the power supply unit and make all the power supply units retry the charging operation.
- charging can be performed as much as possible regardless of whether the abnormality detected in the power supply unit is caused by an internal factor or an external factor of the power supply unit.
- FIG. 1 is a diagram showing a configuration example of a charging device according to the embodiment.
- the charging device 1 includes a plurality of power supply units 11-1 to 11-N (N is an integer of 2 or more) connected in parallel and a charge control unit (ECU: Electronic Control Unit) 12.
- ECU Electronic Control Unit
- the plurality of power supply units 11-1 to 11-N will be simply referred to as the power supply unit 11 when not particularly distinguished.
- Power supply unit 11 converts AC power input from AC power supply 2 via power cable 3 into predetermined DC power, and outputs the converted DC power to power storage device 4 via charging cable 5.
- the power supply units 11-1 to 11-N each include an alternating current-direct current (AC-DC) converter 111 and a direct current-direct current (DC-DC) converter 112.
- the power supply units 11-1 to 11-N each include a power supply unit control unit 113, a current sensor 114, and a voltage sensor 115.
- AC-DC converter 111 converts the input AC power into DC power according to the instruction of power supply unit control section 113, and outputs the converted DC power to DC-DC converter 112.
- the DC-DC converter 112 converts the input DC power into predetermined DC power according to the instruction of the power supply unit control section 113 and outputs it.
- the power supply unit control unit 113 is, for example, a processor such as a central processing unit (CPU), a field programmable gate array (FPGA), or a programmable logic device (PLD).
- the power supply unit control unit 113 transmits and receives control signals to and from the charge control unit 12, and controls the overall operation of the power supply unit 11. For example, when the power supply unit control unit 113 detects that there is an abnormality in the measured values of the current sensor 114 or the voltage sensor 115, that is, detects an overcurrent or an overvoltage, the charge control unit 12 detects an abnormality (or operation stop) of the power supply unit 11. The notification is given to stop the operation of each part of the power supply unit 11.
- a processor such as a central processing unit (CPU), a field programmable gate array (FPGA), or a programmable logic device (PLD).
- the power supply unit control unit 113 transmits and receives control signals to and from the charge control unit 12, and controls the overall operation of the power supply unit 11. For example
- the current sensor 114 measures the output current from the DC-DC converter 112, but, for example, measures the input current to the AC-DC converter 111, and other current values It may be configured to measure.
- the voltage sensor 115 measures the output voltage from the DC-DC converter 112, but, for example, measures other voltage values such as measuring the input voltage to the AC-DC converter 111. It may be configured to measure.
- a temperature sensor may be installed to measure the temperature at any point in the power supply unit 11.
- the power supply unit control unit 113 is configured to notify the charge control unit 12 of an abnormality (or operation stop) of the power supply unit 11 when detecting an abnormality in the measurement value of the temperature sensor, and to stop the operation of each unit of the power supply unit 11 May be
- the charge control unit 12 is, for example, a processor such as a CPU, an FPGA, or a PLD.
- the charge control unit 12 transmits and receives control signals to and from the power supply unit control unit 113 of each of the power supply units 11-1 to 11-N and the battery control unit (not shown) in the storage device 4, and operates the entire charging device 1 Control.
- the charge control unit 12 operates, for example, as described below.
- FIG. 2 is a diagram showing an example of a processing flow of the charge control method according to the embodiment.
- the charge control method shown in FIG. 2 may be executed before charging of storage device 4 by charging device 1 is started, or may be performed after charging of storage device 4 by charging device 1 is started. It is also good.
- a predetermined number M (M is an integer greater than 1 and less than or equal to N) of the plurality of power supply units 11-1 to 11-N. It is determined whether an abnormality is detected in the above power supply unit 11 (S2). As described above, when an abnormality occurs in the power supply unit 11, the charge control unit 12 receives a notification (or notification of operation stop) of the abnormality of the power supply unit 11 from the power supply unit control unit 113 of the power supply unit 11.
- the predetermined number M is preset according to the probability that the predetermined number M of power supply units 11 simultaneously fail among the plurality of power supply units 11-1 to 11-N. Specifically, among the plurality of power supply units 11-1 to 11-N, the probability that a failure occurs simultaneously in M (for example, two) power supply units 11 is M-1 (for example, one) power supply unit If the probability of failure occurring simultaneously in 11 is sufficiently lower, the predetermined number is set to M (for example, 2).
- the charge control unit 12 detects an abnormality that is caused by an internal factor of the power supply unit 11, that is, The power supply unit 11 is determined to be faulty (S3). Examples of failure of the power supply unit 11 include failure of the AC-DC converter 111 and failure of the DC-DC converter 112.
- the charge control unit 12 stops the charging operation of the power supply unit 11 in which the abnormality is detected (S4), and executes the charging operation by the power supply unit 11 other than the power supply unit 11 in which the abnormality is detected, that is, the normal power supply unit 11 Continue (S5). Specifically, charge control unit 12 notifies the battery control unit (not shown) in power storage device 4 of the maximum current value that can be supplied by normal power supply unit 11, and the current control value is output from the battery control unit. To receive. The charge control unit 12 instructs a desired current value to the power supply unit control unit 113 of the normal power supply unit 11 according to the received current command value, and causes the normal power supply unit 11 to output a desired DC current.
- charge control unit 12 detects an abnormality that is caused by an external cause of power supply unit 11. (S6).
- the probability that the failures occur simultaneously in the predetermined number M or more of power supply units 11 is sufficiently lower than the probability that the failures occur simultaneously in the power supply units 11 less than the predetermined number M. Therefore, when an abnormality is detected in the power supply units 11 of a predetermined number or more, it can be said that there is a high possibility that an abnormality has occurred due to an external factor of the power supply unit 11.
- the power failure of AC power supply 2 As an example of an external factor, the power failure of AC power supply 2, the breakage of power supply cable 3, the breakage of charge cable 5, etc. are mentioned.
- the charge control method according to the embodiment it is possible to control the charge by separating the abnormality due to the internal factor of the power supply unit (the failure of the power supply unit) or the abnormality due to the external factor.
- the charge control unit 12 When it is determined that the detected abnormality is an abnormality that has occurred due to an external factor, it is desirable that charging by the charging device 1 be temporarily stopped until the external factor is eliminated and the abnormality is resolved. Therefore, the charge control unit 12 outputs a stop instruction signal to each power supply unit control unit 113 to stop the charging operation of all the power supply units 11-1 to 11-N (S7).
- the all power supply units include the power supply unit 11 in which the abnormality is detected and the power supply unit 11 in which the abnormality is not detected. However, if there is no failure in the power supply unit 11, it is desirable that charging be resumed promptly after the abnormality is eliminated.
- the charge control unit 12 outputs a retry instruction signal to each of the power supply unit control units 113 to cause all the stopped power supply units 11-1 to 11-N to retry the charge operation (S8).
- the retry is resuming that the power supply units 11-1 to 11-N convert the input AC power into DC power and output it.
- the charging control unit 12 may cause the plurality of power supply units 11 to repeatedly retry the charging operation until the abnormality detected in the predetermined number M or more of the power supply units 11 is recovered.
- the charge control unit 12 may cause the plurality of power supply units 11 to repeatedly retry the charge operation for a predetermined time.
- the charge control method when a failure occurs in the power supply unit, charging is performed by the normal power supply unit, and an abnormality occurs due to an external cause of the power supply unit.
- the charging is performed immediately after the abnormality caused by the external factor is eliminated. Therefore, according to the charging device according to the embodiment, charging can be performed as much as possible regardless of whether the abnormality detected in the power supply unit is caused by an internal factor or an external factor of the power supply unit.
- the charge control unit 12 stops the charging operation of the power supply unit 11 in which the abnormality is detected (S4), and causes the normal power supply unit 11 to execute (continue) the charging operation (S5).
- the charge control unit 12 may stop the charging operation of all the power supply units 11-1 to 11-N and cause the normal power supply unit 11 to execute (retry) the charging operation. According to such processing, the charging operation by the normal power supply unit 11 is newly started after the stop of all the power supply units 11.
- Charging device 11 (11-1 to 11-N) power supply unit 111 AC-DC converter 112 DC-DC converter 113 power supply unit control unit 114 current sensor 115 voltage sensor 12 charge control unit 2 AC power supply 3 power cable 4 storage device 5 charging cable
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Abstract
A charging device (1) equipped with: multiple power supply units 11-1 - 11-N that execute a charging operation wherein input AC power is converted to DC power, which is then output; and a charging control unit 12 which, when a fault is detected in at least a prescribed number which is more than one of the power supply units, stops the charging operation of all of the power supply units 11-1 - 11-N, including the power supply units for which a fault has been detected and the power supply units for which a fault has not been detected, and causes all of the power supply units 11-1 - 11-N to retry the charging operation.
Description
本発明は、充電装置及び充電制御方法に関する。
The present invention relates to a charging device and a charging control method.
充電装置の内部には複数の電源ユニットが搭載されることがある。搭載された複数の電源ユニットの内、ある電源ユニットで異常が検出された場合、異常が検出された電源ユニットの動作は停止され、正常な電源ユニットのみで充電が続けられる。
Several power supply units may be mounted in the inside of a charging device. When an abnormality is detected in a certain power supply unit among the plurality of mounted power supply units, the operation of the power supply unit in which the abnormality is detected is stopped, and charging is continued only with the normal power supply unit.
なお、関連する技術として特許文献１～３に記載の技術が知られている。
The techniques described in Patent Documents 1 to 3 are known as related techniques.
しかしながら、電源ユニットの外的要因により異常が発生した場合には、全ての電源ユニットで異常が検出される可能性がある。全ての電源ユニットで異常が検出されて、全ての電源ユニットの動作が停止されると、充電装置による充電が停止してしまう。
However, when an abnormality occurs due to an external factor of the power supply unit, the abnormality may be detected in all the power supply units. When an abnormality is detected in all the power supply units and the operation of all the power supply units is stopped, the charging by the charging device is stopped.
本発明の一側面に係る目的は、電源ユニットで検出された異常が電源ユニットの内的要因で発生したか外的要因で発生したかに関係なく充電を可及的に実施できる充電装置を提供することである。
An object according to one aspect of the present invention is to provide a charging device capable of performing charging as much as possible regardless of whether an abnormality detected in a power supply unit is caused by an internal factor or an external factor of a power supply unit. It is to be.
本発明に係る一つの形態である充電装置は、複数の電源ユニットと充電制御ユニットとを含む。複数の電源ユニットは、入力された交流電力を直流電力に変換して出力する充電動作を実行する。充電制御ユニットは、複数の電源ユニットの内、１より大きい所定数以上の電源ユニットに異常が検出された場合に、異常が検出された電源ユニットと異常が検出されなかった電源ユニットを含む全ての電源ユニットの充電動作を停止させ、全ての電源ユニットに充電動作をリトライさせる。
A charging device according to one aspect of the present invention includes a plurality of power supply units and a charge control unit. The plurality of power supply units execute a charging operation of converting the input AC power into DC power and outputting the DC power. The charge control unit includes all the power supply units in which the abnormality is detected and the power supply units in which the abnormality is not detected when an abnormality is detected in a predetermined number or more of power supply units larger than 1 among the plurality of power supply units. Stop the charging operation of the power supply unit and make all the power supply units retry the charging operation.
一実施形態に従った充電装置によれば、電源ユニットで検出された異常が電源ユニットの内的要因で発生したか外的要因で発生したかに関係なく充電を可及的に実施できる。
According to the charging device according to one embodiment, charging can be performed as much as possible regardless of whether the abnormality detected in the power supply unit is caused by an internal factor or an external factor of the power supply unit.
以下図面に基づいて実施形態について詳細を説明する。
図１は、実施形態に従った充電装置の構成例を示す図である。充電装置１は、並列接続される複数の電源ユニット１１－１～１１－Ｎ（Ｎは２以上の整数）及び充電制御ユニット（ＥＣＵ：Electronic Control Unit）１２を含む。以下の説明において複数の電源ユニット１１－１～１１－Ｎを特に区別しない場合には、単に電源ユニット１１と記載する。 Hereinafter, embodiments will be described in detail based on the drawings.
FIG. 1 is a diagram showing a configuration example of a charging device according to the embodiment. The charging device 1 includes a plurality of power supply units 11-1 to 11-N (N is an integer of 2 or more) connected in parallel and a charge control unit (ECU: Electronic Control Unit) 12. In the following description, the plurality of power supply units 11-1 to 11-N will be simply referred to as thepower supply unit 11 when not particularly distinguished.
図１は、実施形態に従った充電装置の構成例を示す図である。充電装置１は、並列接続される複数の電源ユニット１１－１～１１－Ｎ（Ｎは２以上の整数）及び充電制御ユニット（ＥＣＵ：Electronic Control Unit）１２を含む。以下の説明において複数の電源ユニット１１－１～１１－Ｎを特に区別しない場合には、単に電源ユニット１１と記載する。 Hereinafter, embodiments will be described in detail based on the drawings.
FIG. 1 is a diagram showing a configuration example of a charging device according to the embodiment. The charging device 1 includes a plurality of power supply units 11-1 to 11-N (N is an integer of 2 or more) connected in parallel and a charge control unit (ECU: Electronic Control Unit) 12. In the following description, the plurality of power supply units 11-1 to 11-N will be simply referred to as the
電源ユニット１１は、電源ケーブル３を介して交流電源２から入力された交流電力を所定の直流電力に変換し、変換された直流電力を充電ケーブル５を介して蓄電装置４へ出力する。電源ユニット１１－１～１１－Ｎは、ＡＣ－ＤＣ（Alternating Current - Direct Current）コンバータ１１１及びＤＣ－ＤＣ（Direct Current - Direct Current）コンバータ１１２を夫々含む。また、電源ユニット１１－１～１１－Ｎは、電源ユニット制御部１１３、電流センサ１１４、及び電圧センサ１１５を夫々含む。
Power supply unit 11 converts AC power input from AC power supply 2 via power cable 3 into predetermined DC power, and outputs the converted DC power to power storage device 4 via charging cable 5. The power supply units 11-1 to 11-N each include an alternating current-direct current (AC-DC) converter 111 and a direct current-direct current (DC-DC) converter 112. The power supply units 11-1 to 11-N each include a power supply unit control unit 113, a current sensor 114, and a voltage sensor 115.
ＡＣ－ＤＣコンバータ１１１は、電源ユニット制御部１１３の指示に従って、入力された交流電力を直流電力に変換し、変換された直流電力をＤＣ－ＤＣコンバータ１１２へ出力する。ＤＣ－ＤＣコンバータ１１２は、電源ユニット制御部１１３の指示に従って、入力された直流電力を所定の直流電力に変換して出力する。
AC-DC converter 111 converts the input AC power into DC power according to the instruction of power supply unit control section 113, and outputs the converted DC power to DC-DC converter 112. The DC-DC converter 112 converts the input DC power into predetermined DC power according to the instruction of the power supply unit control section 113 and outputs it.
電源ユニット制御部１１３は、例えば、ＣＰＵ（Central Processing Unit）といったプロセッサ、ＦＰＧＡ（Field Programmable Gate Array）、又はＰＬＤ（Programmable Logic Device）である。電源ユニット制御部１１３は、充電制御ユニット１２と制御信号を送受信し、電源ユニット１１全体の動作を制御する。例えば、電源ユニット制御部１１３は、電流センサ１１４や電圧センサ１１５の測定値に異常があること、すなわち過電流や過電圧を検出すると、電源ユニット１１の異常（又は動作停止）を充電制御ユニット１２に通知し、電源ユニット１１各部の動作を停止させる。
The power supply unit control unit 113 is, for example, a processor such as a central processing unit (CPU), a field programmable gate array (FPGA), or a programmable logic device (PLD). The power supply unit control unit 113 transmits and receives control signals to and from the charge control unit 12, and controls the overall operation of the power supply unit 11. For example, when the power supply unit control unit 113 detects that there is an abnormality in the measured values of the current sensor 114 or the voltage sensor 115, that is, detects an overcurrent or an overvoltage, the charge control unit 12 detects an abnormality (or operation stop) of the power supply unit 11. The notification is given to stop the operation of each part of the power supply unit 11.
なお、図１に示す構成例では、電流センサ１１４は、ＤＣ－ＤＣコンバータ１１２からの出力電流を測定するが、例えば、ＡＣ－ＤＣコンバータ１１１への入力電流を測定する等、他の電流値を測定するように構成されてもよい。また、図１に示す構成例では、電圧センサ１１５は、ＤＣ－ＤＣコンバータ１１２からの出力電圧を測定するが、例えば、ＡＣ－ＤＣコンバータ１１１への入力電圧を測定する等、他の電圧値を測定するように構成されてもよい。さらに、電源ユニット１１内の任意の箇所の温度を測定する温度センサが設置されてもよい。電源ユニット制御部１１３は、温度センサの測定値に異常を検出すると、電源ユニット１１の異常（又は動作停止）を充電制御ユニット１２に通知し、電源ユニット１１各部の動作を停止させるように構成されてもよい。
In the configuration example shown in FIG. 1, the current sensor 114 measures the output current from the DC-DC converter 112, but, for example, measures the input current to the AC-DC converter 111, and other current values It may be configured to measure. Further, in the configuration example shown in FIG. 1, the voltage sensor 115 measures the output voltage from the DC-DC converter 112, but, for example, measures other voltage values such as measuring the input voltage to the AC-DC converter 111. It may be configured to measure. Furthermore, a temperature sensor may be installed to measure the temperature at any point in the power supply unit 11. The power supply unit control unit 113 is configured to notify the charge control unit 12 of an abnormality (or operation stop) of the power supply unit 11 when detecting an abnormality in the measurement value of the temperature sensor, and to stop the operation of each unit of the power supply unit 11 May be
充電制御ユニット１２は、例えば、ＣＰＵといったプロセッサ、ＦＰＧＡ、又はＰＬＤである。充電制御ユニット１２は、電源ユニット１１－１～１１－Ｎ夫々の電源ユニット制御部１１３及び蓄電装置４内の電池制御ユニット（図示せず）と制御信号を送受信し、充電装置１全体の動作を制御する。充電制御ユニット１２は、例えば、以下の説明のように動作する。
The charge control unit 12 is, for example, a processor such as a CPU, an FPGA, or a PLD. The charge control unit 12 transmits and receives control signals to and from the power supply unit control unit 113 of each of the power supply units 11-1 to 11-N and the battery control unit (not shown) in the storage device 4, and operates the entire charging device 1 Control. The charge control unit 12 operates, for example, as described below.
図２は、実施形態に従った充電制御方法の処理フローの一例を示す図である。なお、図２に示す充電制御方法は、充電装置１による蓄電装置４に対する充電が開始される前に実行されてもよいし、充電装置１による蓄電装置４に対する充電が開始された後に実行されてもよい。
FIG. 2 is a diagram showing an example of a processing flow of the charge control method according to the embodiment. The charge control method shown in FIG. 2 may be executed before charging of storage device 4 by charging device 1 is started, or may be performed after charging of storage device 4 by charging device 1 is started. It is also good.
充電制御ユニット１２は、電源ユニット１１の異常を検出すると（Ｓ１で“ＹＥＳ”）、複数の電源ユニット１１－１～１１－Ｎの内、所定数Ｍ（Ｍは１より大きくＮ以下の整数）以上の電源ユニット１１に異常が検出されたか否かを判定する（Ｓ２）。前述したように、電源ユニット１１に異常が発生した場合、充電制御ユニット１２は、電源ユニット１１の異常の通知（又は動作停止の通知）を当該電源ユニット１１の電源ユニット制御部１１３から受ける。
When the charge control unit 12 detects an abnormality of the power supply unit 11 ("YES" in S1), a predetermined number M (M is an integer greater than 1 and less than or equal to N) of the plurality of power supply units 11-1 to 11-N. It is determined whether an abnormality is detected in the above power supply unit 11 (S2). As described above, when an abnormality occurs in the power supply unit 11, the charge control unit 12 receives a notification (or notification of operation stop) of the abnormality of the power supply unit 11 from the power supply unit control unit 113 of the power supply unit 11.
所定数Ｍは、複数の電源ユニット１１－１～１１－Ｎの内、所定数Ｍの電源ユニット１１に同時に故障が発生する確率に従って予め設定される。具体的には、複数の電源ユニット１１－１～１１－Ｎの内、Ｍ個（例えば２個）の電源ユニット１１に同時に故障が発生する確率がＭ－１個（例えば１個）の電源ユニット１１に故障が同時に発生する確率よりも十分低い場合には、所定数はＭ（例えば２）に設定される。
The predetermined number M is preset according to the probability that the predetermined number M of power supply units 11 simultaneously fail among the plurality of power supply units 11-1 to 11-N. Specifically, among the plurality of power supply units 11-1 to 11-N, the probability that a failure occurs simultaneously in M (for example, two) power supply units 11 is M-1 (for example, one) power supply unit If the probability of failure occurring simultaneously in 11 is sufficiently lower, the predetermined number is set to M (for example, 2).
所定数Ｍ未満の電源ユニット１１に異常が検出されたと判定された場合（Ｓ２で“ＮＯ”）、充電制御ユニット１２は、検出された異常は電源ユニット１１の内的要因により発生した異常、すなわち、電源ユニット１１の故障であると確定する（Ｓ３）。電源ユニット１１の故障の一例としては、ＡＣ－ＤＣコンバータ１１１の故障及びＤＣ－ＤＣコンバータ１１２の故障等が挙げられる。
When it is determined that an abnormality is detected in the power supply units 11 less than the predetermined number M ("NO" in S2), the charge control unit 12 detects an abnormality that is caused by an internal factor of the power supply unit 11, that is, The power supply unit 11 is determined to be faulty (S3). Examples of failure of the power supply unit 11 include failure of the AC-DC converter 111 and failure of the DC-DC converter 112.
充電制御ユニット１２は、異常が検出された電源ユニット１１の充電動作を停止させ（Ｓ４）、異常が検出された電源ユニット１１以外の電源ユニット１１、すなわち正常な電源ユニット１１による充電動作を実行（続行）させる（Ｓ５）。具体的には、充電制御ユニット１２は、正常な電源ユニット１１により供給可能な最大電流値を蓄電装置４内の電池制御ユニット（図示せず）に通知し、該電池制御ユニットから電流指令値を受信する。充電制御ユニット１２は、受信した電流指令値に従って、正常な電源ユニット１１の電源ユニット制御部１１３に所望の電流値を指示し、正常な電源ユニット１１に所望の直流電流を出力させる。
The charge control unit 12 stops the charging operation of the power supply unit 11 in which the abnormality is detected (S4), and executes the charging operation by the power supply unit 11 other than the power supply unit 11 in which the abnormality is detected, that is, the normal power supply unit 11 Continue (S5). Specifically, charge control unit 12 notifies the battery control unit (not shown) in power storage device 4 of the maximum current value that can be supplied by normal power supply unit 11, and the current control value is output from the battery control unit. To receive. The charge control unit 12 instructs a desired current value to the power supply unit control unit 113 of the normal power supply unit 11 according to the received current command value, and causes the normal power supply unit 11 to output a desired DC current.
一方、所定数Ｍ以上の電源ユニット１１に異常が検出されたと判定された場合（Ｓ２で“ＹＥＳ”）、充電制御ユニット１２は、検出された異常は電源ユニット１１の外的要因により発生した異常であると確定する（Ｓ６）。前述したように、所定数Ｍ以上の電源ユニット１１に故障が同時に発生する確率は、所定数Ｍ未満の電源ユニット１１に故障が同時に発生する確率よりも十分低い。そこで、所定数Ｍ以上の電源ユニット１１に異常が検出された場合には、電源ユニット１１の外的要因により異常が発生した可能性が高いといえる。外的要因の一例としては、交流電源２の停電、電源ケーブル３の破損、及び充電ケーブル５の破損等が挙げられる。このように、実施形態に従った充電制御方法によれば、電源ユニットの内的要因による異常（電源ユニットの故障）なのか、外的要因による異常なのかを切り分けて、充電を制御できる。
On the other hand, when it is determined that an abnormality is detected in power supply units 11 of a predetermined number or more ("YES" in S2), charge control unit 12 detects an abnormality that is caused by an external cause of power supply unit 11. (S6). As described above, the probability that the failures occur simultaneously in the predetermined number M or more of power supply units 11 is sufficiently lower than the probability that the failures occur simultaneously in the power supply units 11 less than the predetermined number M. Therefore, when an abnormality is detected in the power supply units 11 of a predetermined number or more, it can be said that there is a high possibility that an abnormality has occurred due to an external factor of the power supply unit 11. As an example of an external factor, the power failure of AC power supply 2, the breakage of power supply cable 3, the breakage of charge cable 5, etc. are mentioned. As described above, according to the charge control method according to the embodiment, it is possible to control the charge by separating the abnormality due to the internal factor of the power supply unit (the failure of the power supply unit) or the abnormality due to the external factor.
検出された異常が外的要因により発生した異常であると確定された場合には、外的要因が除去されて異常が解消されるまで、充電装置１による充電は一端停止されることが望ましい。そこで、充電制御ユニット１２は、夫々の電源ユニット制御部１１３に停止指示信号を出力して、全ての電源ユニット１１－１～１１－Ｎの充電動作を停止させる（Ｓ７）。全ての電源ユニットとは、異常が検出された電源ユニット１１と異常が検出されなかった電源ユニット１１を含む。しかしながら、電源ユニット１１に故障がないのであれば、異常の解消後に速やかに充電が再開されることが望ましい。そこで、充電制御ユニット１２は、夫々の電源ユニット制御部１１３にリトライ指示信号を出力して、停止した全ての電源ユニット１１－１～１１－Ｎに充電動作をリトライさせる（Ｓ８）。リトライとは、電源ユニット１１－１～１１－Ｎが、入力された交流電力を直流電力に変換して出力することを再開することである。
When it is determined that the detected abnormality is an abnormality that has occurred due to an external factor, it is desirable that charging by the charging device 1 be temporarily stopped until the external factor is eliminated and the abnormality is resolved. Therefore, the charge control unit 12 outputs a stop instruction signal to each power supply unit control unit 113 to stop the charging operation of all the power supply units 11-1 to 11-N (S7). The all power supply units include the power supply unit 11 in which the abnormality is detected and the power supply unit 11 in which the abnormality is not detected. However, if there is no failure in the power supply unit 11, it is desirable that charging be resumed promptly after the abnormality is eliminated. Therefore, the charge control unit 12 outputs a retry instruction signal to each of the power supply unit control units 113 to cause all the stopped power supply units 11-1 to 11-N to retry the charge operation (S8). The retry is resuming that the power supply units 11-1 to 11-N convert the input AC power into DC power and output it.
Ｓ８において、充電制御ユニット１２は、所定数Ｍ以上の電源ユニット１１に検出された異常が回復するまで、複数の電源ユニット１１に充電動作を繰り返しリトライさせてもよい。或いは、Ｓ８において、充電制御ユニット１２は、一定時間の間、複数の電源ユニット１１に充電動作を繰り返しリトライさせてもよい。
In S8, the charging control unit 12 may cause the plurality of power supply units 11 to repeatedly retry the charging operation until the abnormality detected in the predetermined number M or more of the power supply units 11 is recovered. Alternatively, in S8, the charge control unit 12 may cause the plurality of power supply units 11 to repeatedly retry the charge operation for a predetermined time.
このように、実施形態に従った充電制御方法によれば、電源ユニットに故障が発生した場合には、正常な電源ユニットにより充電が実行され、電源ユニットの外的要因による異常が発生した場合には、外的要因による異常が解消された後速やかに充電が実行される。したがって、実施形態に従った充電装置によれば、電源ユニットで検出された異常が電源ユニットの内的要因で発生したか外的要因で発生したかに関係なく充電を可及的に実施できる。
As described above, according to the charge control method according to the embodiment, when a failure occurs in the power supply unit, charging is performed by the normal power supply unit, and an abnormality occurs due to an external cause of the power supply unit. The charging is performed immediately after the abnormality caused by the external factor is eliminated. Therefore, according to the charging device according to the embodiment, charging can be performed as much as possible regardless of whether the abnormality detected in the power supply unit is caused by an internal factor or an external factor of the power supply unit.
なお、本発明は、以上の実施の形態に限定されるものでなく、本発明の要旨を逸脱しない範囲内で種々の改良、変更が可能である。
例えば、前述の説明では、充電制御ユニット１２は、異常が検出された電源ユニット１１の充電動作を停止させ（Ｓ４）、正常な電源ユニット１１に充電動作を実行（続行）させる（Ｓ５）。しかしながら、充電制御ユニット１２は、全ての電源ユニット１１－１～１１－Ｎの充電動作を停止させ、正常な電源ユニット１１に充電動作を実行（リトライ）させてもよい。こうした処理によれば、全ての電源ユニット１１の停止後正常な電源ユニット１１による充電動作が新たに開始される。このため、例えば、異常発生前に蓄電装置４が出力した電流指令値と、異常発生後に充電装置１が出力する電流値との不整合といった制御上の不都合が生じない。また、例えば、異常発生後に供給可能な最大電流値を充電装置１が蓄電装置４に通知するといった充電中の追加の処理が生じない。したがって、外的要因による異常発生後に充電装置１による充電が再開される場合と同様に、充電装置１による充電制御を単純化できる。 The present invention is not limited to the above embodiments, and various improvements and changes can be made without departing from the scope of the present invention.
For example, in the above description, thecharge control unit 12 stops the charging operation of the power supply unit 11 in which the abnormality is detected (S4), and causes the normal power supply unit 11 to execute (continue) the charging operation (S5). However, the charge control unit 12 may stop the charging operation of all the power supply units 11-1 to 11-N and cause the normal power supply unit 11 to execute (retry) the charging operation. According to such processing, the charging operation by the normal power supply unit 11 is newly started after the stop of all the power supply units 11. Therefore, for example, there is no control inconvenience such as a mismatch between the current command value output by power storage device 4 before occurrence of abnormality and the current value output by charging device 1 after occurrence of abnormality. In addition, for example, additional processing during charging does not occur in which the charging device 1 notifies the power storage device 4 of the maximum current value that can be supplied after occurrence of an abnormality. Therefore, charge control by the charging device 1 can be simplified as in the case where charging by the charging device 1 is resumed after occurrence of an abnormality due to an external factor.
例えば、前述の説明では、充電制御ユニット１２は、異常が検出された電源ユニット１１の充電動作を停止させ（Ｓ４）、正常な電源ユニット１１に充電動作を実行（続行）させる（Ｓ５）。しかしながら、充電制御ユニット１２は、全ての電源ユニット１１－１～１１－Ｎの充電動作を停止させ、正常な電源ユニット１１に充電動作を実行（リトライ）させてもよい。こうした処理によれば、全ての電源ユニット１１の停止後正常な電源ユニット１１による充電動作が新たに開始される。このため、例えば、異常発生前に蓄電装置４が出力した電流指令値と、異常発生後に充電装置１が出力する電流値との不整合といった制御上の不都合が生じない。また、例えば、異常発生後に供給可能な最大電流値を充電装置１が蓄電装置４に通知するといった充電中の追加の処理が生じない。したがって、外的要因による異常発生後に充電装置１による充電が再開される場合と同様に、充電装置１による充電制御を単純化できる。 The present invention is not limited to the above embodiments, and various improvements and changes can be made without departing from the scope of the present invention.
For example, in the above description, the
１ 充電装置
１１（１１－１～１１－Ｎ） 電源ユニット
１１１ ＡＣ－ＤＣコンバータ
１１２ ＤＣ－ＤＣコンバータ
１１３ 電源ユニット制御部
１１４ 電流センサ
１１５ 電圧センサ
１２ 充電制御ユニット
２ 交流電源
３ 電源ケーブル
４ 蓄電装置
５ 充電ケーブル 1 Charging device 11 (11-1 to 11-N)power supply unit 111 AC-DC converter 112 DC-DC converter 113 power supply unit control unit 114 current sensor 115 voltage sensor 12 charge control unit 2 AC power supply 3 power cable 4 storage device 5 charging cable
１１（１１－１～１１－Ｎ） 電源ユニット
１１１ ＡＣ－ＤＣコンバータ
１１２ ＤＣ－ＤＣコンバータ
１１３ 電源ユニット制御部
１１４ 電流センサ
１１５ 電圧センサ
１２ 充電制御ユニット
２ 交流電源
３ 電源ケーブル
４ 蓄電装置
５ 充電ケーブル 1 Charging device 11 (11-1 to 11-N)
Claims (4)
- 入力された交流電力を直流電力に変換して出力する充電動作を実行する複数の電源ユニットと、
前記複数の電源ユニットの内、１より大きい所定数以上の電源ユニットに異常が検出された場合に、異常が検出された電源ユニットと異常が検出されなかった電源ユニットとを含む全ての電源ユニットの前記充電動作を停止させ、前記全ての電源ユニットに前記充電動作をリトライさせる充電制御ユニットと
を含む、充電装置。 A plurality of power supply units that execute a charging operation that converts input AC power into DC power and outputs the DC power;
Of all the power supply units including the power supply unit in which the abnormality is detected and the power supply unit in which the abnormality is not detected when an abnormality is detected in a predetermined number or more of power supply units larger than 1 among the plurality of power supply units. A charging control unit that stops the charging operation and causes all the power supply units to retry the charging operation. - 請求項１に記載の充電装置であって、
前記充電制御ユニットは、前記所定数以上の電源ユニットに検出された異常が回復するまで、前記全ての電源ユニットに前記充電動作を繰り返しリトライさせる充電装置。 The charging device according to claim 1,
The charging device causes the all power supply units to retry the charging operation repeatedly until the abnormality detected in the predetermined number or more of power supply units is recovered. - 請求項１又は２に記載の充電装置であって、
前記充電制御ユニットは、前記複数の電源ユニットの内、所定数未満の電源ユニットに異常が検出された場合に、異常が検出された前記電源ユニット以外の電源ユニットに前記充電動作を実行させる
充電装置。 The charging device according to claim 1 or 2,
The charging control unit causes the charging device to execute the charging operation in a power supply unit other than the power supply unit in which the abnormality is detected when an abnormality is detected in a power supply unit less than a predetermined number of the plurality of power supply units. . - 入力された交流電力を直流電力に変換して出力する充電動作を実行する複数の電源ユニットの内、１より大きい所定数以上の電源ユニットに異常が検出された場合に、異常が検出された電源ユニットと異常が検出されなかった電源ユニットとを含む全ての電源ユニットの前記充電動作を停止させ、
前記全ての電源ユニットに前記充電動作をリトライさせること
を含む充電制御方法。 A power supply in which an abnormality is detected when an abnormality is detected in a predetermined number or more of power supply units among a plurality of power supply units that execute a charging operation that converts input AC power into DC power and outputs the DC power Stopping the charging operation of all the power supply units including the unit and the power supply unit in which no abnormality is detected;
A charging control method including causing all the power supply units to retry the charging operation.
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|---|---|---|---|---|
| JPH04347546A (en) * | 1991-05-24 | 1992-12-02 | Koufu Nippon Denki Kk | Redundant operation power supply system |
| US6031743A (en) * | 1998-10-28 | 2000-02-29 | International Business Machines Corporation | Fault isolation in a redundant power converter |
| JP2012139089A (en) * | 2010-12-10 | 2012-07-19 | Nichicon Corp | Charging control device |
| WO2013054680A1 (en) * | 2011-10-11 | 2013-04-18 | ニチコン株式会社 | Mounted-type charging system |
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| JPS57173337A (en) * | 1981-04-17 | 1982-10-25 | Noriyuki Sumitomo | Indoor wiring device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04347546A (en) * | 1991-05-24 | 1992-12-02 | Koufu Nippon Denki Kk | Redundant operation power supply system |
| US6031743A (en) * | 1998-10-28 | 2000-02-29 | International Business Machines Corporation | Fault isolation in a redundant power converter |
| JP2012139089A (en) * | 2010-12-10 | 2012-07-19 | Nichicon Corp | Charging control device |
| WO2013054680A1 (en) * | 2011-10-11 | 2013-04-18 | ニチコン株式会社 | Mounted-type charging system |
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