JP2016054590A - Vehicle charging system - Google Patents

Vehicle charging system Download PDF

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JP2016054590A
JP2016054590A JP2014178973A JP2014178973A JP2016054590A JP 2016054590 A JP2016054590 A JP 2016054590A JP 2014178973 A JP2014178973 A JP 2014178973A JP 2014178973 A JP2014178973 A JP 2014178973A JP 2016054590 A JP2016054590 A JP 2016054590A
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charger
current value
normal
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quick
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林 悟
Satoru Hayashi
悟 林
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Nitto Kogyo Co Ltd
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Nitto Kogyo Co Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/70Energy storage systems for electromobility, e.g. batteries

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  • Electric Propulsion And Braking For Vehicles (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)
  • Supply And Distribution Of Alternating Current (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a technique enabling reduction of capacities of a transformer and a master breaker to be used in a vehicle charging system that includes a fast charger and a standard charger both connected to an identical system power supply.SOLUTION: A controller 7 which connects a fast charger 1 and a standard charger 2 includes: a detector unit 9 which detects a connection state between the fast charger or the standard charger and the vehicle; a determination unit 10 which, on detection of a new connection of the fast charger, performs either of determination whether or not to suppress an allowable current value to be used for vehicle charging by the standard charger, or calculation of a maximum input current value to be input to the fast charger; and an output unit 11 which outputs the maximum input current value to the fast charger and, on determination by the determination unit that suppression is necessary, outputs the allowable current value after the suppression to the standard charger.SELECTED DRAWING: Figure 3

Description

本発明は、同一の系統電源で構成される車両充電システム内に、急速充電器と普通充電器の双方を備えた車両充電システムに関するものである。   The present invention relates to a vehicle charging system including both a quick charger and a normal charger in a vehicle charging system constituted by the same system power supply.

車両用充電器には、一般家庭用電源と同じ交流電源(単相100〜200V)で、おおよそ5時間〜14時間程度かけて充電を行う普通充電器と、50kWの高容量(もしくは20kWの中容量)で、電池がほぼ空に近い状態から80%まで15分〜30分程度(もしくは30分〜1時間程度)で充電を行う急速充電器とがある。
これらは、それぞれ独立のシステムとして構築されることが一般的であるが、同一の系統電源で構成される車両充電システム内に、急速充電器と普通充電器の双方を備えた車両充電システムに関する技術も開示されている(特許文献1)。
Vehicle chargers include ordinary chargers that charge for approximately 5 to 14 hours with the same AC power supply (single-phase 100 to 200 V) as general household power supplies, and a high capacity of 50 kW (or 20 kW) (Capacity), there is a quick charger that charges the battery from almost empty to 80% in about 15 minutes to 30 minutes (or about 30 minutes to 1 hour).
These are generally constructed as independent systems, but a technology related to a vehicle charging system including both a quick charger and a normal charger in a vehicle charging system composed of the same system power supply. Is also disclosed (Patent Document 1).

ただし系統電源の容量が不足する場合には、普通充電器は充電制御信号(CPLT信号)により充電途中で充電電流値を抑制することが可能であるが、急速充電器では仕様上、充電途中で充電電流値を抑制することができない。従って、前記システムで使用する変圧器や主幹ブレーカの容量選定は、急速充電器と普通充電器の全てが使用された状態で必要となる電力量に基づいて行われている。このため、変圧器や主幹ブレーカとして容量の大きなものを使用せざるを得ず、設備が大型化する問題やコストが嵩む問題があった。   However, when the capacity of the system power supply is insufficient, the normal charger can suppress the charging current value during the charging by the charging control signal (CPLT signal). The charging current value cannot be suppressed. Therefore, the capacity of the transformer and main breaker used in the system is selected based on the amount of electric power required in a state where all of the quick charger and the ordinary charger are used. For this reason, a transformer or a main breaker having a large capacity has to be used, and there is a problem that the equipment is enlarged and the cost is increased.

特開2010−28913号公報JP 2010-28913 A

本発明の目的は前記の問題を解決し、急速充電器と普通充電器の双方を備えた車両充電システムにおいて、システムで使用する変圧器や主幹ブレーカの容量を低下させることができる技術を提供することである。   The object of the present invention is to solve the above problems and provide a technique capable of reducing the capacity of a transformer and a main breaker used in the system in a vehicle charging system having both a quick charger and a normal charger. That is.

上記課題を解決するためになされた本発明の車両充電システムは、急速充電器と普通充電器の双方を備え、前記急速充電器と普通充電器を、各々、通信手段を介してコントローラに接続した車両充電システムであって、前記コントローラは、前記急速充電器および普通充電器と車両の接続状況を検出する検出部と、前記検出部により急速充電器の接続が新たに検出された際、車両が接続されている普通充電器での車両充電に使用する許容電流値を抑制するか否かの判定、および、該急速充電器に入力される最大入力電流値の算出を行う判定部と、前記最大入力電流値を急速充電器に向けて出力し、かつ、前記判定部が抑制を必要と判定した場合には、その抑制後の許容電流値を普通充電器に向けて出力する出力部を備え、前記急速充電器は、前記の最大入力電流値を受信して、その値を設定電流として設定する設定部を備え、前記普通充電器は、前記の抑制後の許容電流値を受信して、その値を、該普通充電器と接続された車両に伝達する制御部を備えることを特徴とするものである。
ここで、普通充電器での車両充電に使用する「許容電流値」とは、普通充電を行う際の制限値(上限値)であり、随時変更可能な値である。また、急速充電器に入力される最大入力電流値である「設定電流」として設定される値は、充電開始時に行われる前記の設定時に固定される値であり、その後の変更は行われない。
The vehicle charging system of the present invention made to solve the above problems includes both a quick charger and a normal charger, and each of the quick charger and the normal charger is connected to a controller via communication means. In the vehicle charging system, the controller detects a connection state between the quick charger and the normal charger and the vehicle, and when the connection of the quick charger is newly detected by the detection unit, the controller A determination unit for determining whether or not to suppress an allowable current value used for vehicle charging in a connected normal charger, and calculating a maximum input current value input to the quick charger; and the maximum When the input current value is output toward the quick charger and the determination unit determines that suppression is required, the output unit includes an output unit that outputs the allowable current value after suppression toward the normal charger. The quick charger is The normal charger includes a setting unit that receives the maximum input current value and sets the value as a set current, and the normal charger receives the allowable current value after the suppression and converts the value into the normal charge. And a control unit for transmitting to a vehicle connected to the vessel.
Here, the “allowable current value” used for vehicle charging with a normal charger is a limit value (upper limit value) when normal charging is performed, and is a value that can be changed at any time. The value set as the “set current”, which is the maximum input current value input to the quick charger, is a value that is fixed at the time of the setting performed at the start of charging, and is not changed thereafter.

なお、本明細書において、「急速充電器と普通充電器の双方を備えた車両充電システム」の具体的形態として、急速充電器と普通充電器を同一の変圧器に接続するものや、急速充電器と普通充電器を同一の主幹ブレーカに接続するもの、あるいは、急速充電器と普通充電器を同一の受電設備に接続するものが挙げられる。
このうち、同一の変圧器あるいは同一の主幹ブレーカに接続する形態では、急速充電器と普通充電器の双方に単相3線式で電力供給が行われ、同一の受電設備に接続する形態では、急速充電器には三相3線式で電力供給が行われ、普通充電器には、単相3線式で電力供給が行われる。
In this specification, as a specific form of the “vehicle charging system including both a quick charger and a normal charger”, the quick charger and the normal charger are connected to the same transformer, Connecting the charger and the ordinary charger to the same main breaker, or connecting the quick charger and the ordinary charger to the same power receiving facility.
Among these, in the form connected to the same transformer or the same main breaker, power is supplied in a single-phase three-wire system to both the quick charger and the ordinary charger, and in the form connected to the same power receiving equipment, The quick charger is supplied with power by a three-phase three-wire system, and the ordinary charger is supplied with power by a single-phase three-wire system.

請求項2記載の発明は、請求項1記載の車両充電システムにおいて、前記判定部は、前記の許容電流値を抑制するか否かの判定を、前記の急速充電器と普通充電器の上流に配置された変圧器もしくは主幹ブレーカの定格容量を基準とした閾値に基づいて行うことを特徴とするものである。なお、本明細書において、「閾値」とは、系統電源における使用電流の制限値を意味し、例えば、「主幹電流の80%」等の基準で定められる値である。   According to a second aspect of the present invention, in the vehicle charging system according to the first aspect, the determination unit determines whether or not to suppress the allowable current value upstream of the quick charger and the normal charger. It is based on a threshold value based on the rated capacity of the arranged transformer or main breaker. In the present specification, the “threshold value” means a limit value of the current used in the system power supply, and is a value determined by a standard such as “80% of the main current”.

請求項3記載の発明は、請求項1または2記載の車両充電システムにおいて、前記判定部は、急速充電器で使用される充電電流の減少に応じて、許容電流値の抑制を解除することを特徴とするものである。   According to a third aspect of the present invention, in the vehicle charging system according to the first or second aspect, the determination unit cancels the suppression of the allowable current value in accordance with a decrease in the charging current used in the quick charger. It is a feature.

本発明では、急速充電器と普通充電器の双方を備え、前記急速充電器と普通充電器を、各々、通信手段を介してコントローラに接続した車両充電システムにおいて、前記コントローラは、前記急速充電器および普通充電器と車両の接続状況を検出する検出部と、前記検出部により急速充電器の接続が新たに検出された際、車両が接続されている普通充電器での車両充電に使用する許容電流値を抑制するか否かの判定、および、該急速充電器に入力される最大入力電流値の算出を行う判定部と、前記最大入力電流値を急速充電器に向けて出力し、かつ、前記判定部が抑制を必要と判定した場合には、その抑制後の許容電流値を普通充電器に向けて出力する出力部を備え、前記急速充電器は、前記の最大入力電流値を受信して、その値を設定電流として設定する設定部を備え、前記普通充電器は、前記の抑制後の許容電流値を受信して、その値を、該普通充電器と接続された車両に伝達する制御部を備える構成としているため、従来技術(同一の系統電源で構成される車両充電システム内に急速充電器と普通充電器の双方を備え、そのシステムで使用する変圧器や主幹ブレーカの容量選定は、急速充電器と普通充電器の全てが使用された状態で必要となる電力量に基づいて行われていたケース)と比べて、システムで使用する変圧器や主幹ブレーカの容量を低下させることができる。   In the present invention, in a vehicle charging system that includes both a quick charger and a normal charger, and the quick charger and the normal charger are connected to the controller via communication means, the controller includes the quick charger. And a detection unit for detecting a connection state between the normal charger and the vehicle, and an allowance for charging the vehicle with the normal charger to which the vehicle is connected when the connection of the quick charger is newly detected by the detection unit. Determining whether to suppress the current value, and calculating a maximum input current value input to the quick charger; and outputting the maximum input current value to the quick charger; and When the determination unit determines that suppression is necessary, the determination unit includes an output unit that outputs an allowable current value after suppression to a normal charger, and the quick charger receives the maximum input current value. And set the current The normal charger has a control unit that receives the suppressed allowable current value and transmits the value to a vehicle connected to the normal charger. Therefore, the conventional technology (with both a quick charger and a normal charger in a vehicle charging system composed of the same system power supply, the capacity selection of the transformer and main breaker used in the system is Compared to the case where the normal charger is used based on the amount of electric power required when it is used, the capacity of the transformer and main breaker used in the system can be reduced.

実施形態1のシステム構成を示すブロック図である。1 is a block diagram showing a system configuration of Embodiment 1. FIG. コントローラの構成を示すブロック図である。It is a block diagram which shows the structure of a controller. 実施形態1のシステムによる制御フロー図である。FIG. 3 is a control flow diagram by the system of the first embodiment. 実施形態2のシステム構成を示すブロック図である。It is a block diagram which shows the system configuration | structure of Embodiment 2.

以下に本発明の好ましい実施形態を示す。   Preferred embodiments of the present invention are shown below.

(実施形態1)
本実施形態では、図1に示すように、1台の急速充電器1と複数台の普通充電器2が、同一の主幹ブレーカ3に接続されている。本実施形態の普通充電器2は、接続された車両に、交流電力(定格200V・16A)を供給し、急速充電器1は、接続された車両に、直流電力を供給する。なお、商用電源から急速充電器1、普通充電器2への電力供給は、単相3線式で行っているが三相3線式とすることもできる。
(Embodiment 1)
In the present embodiment, as shown in FIG. 1, one quick charger 1 and a plurality of ordinary chargers 2 are connected to the same main breaker 3. The normal charger 2 of this embodiment supplies AC power (rated at 200 V · 16 A) to the connected vehicle, and the quick charger 1 supplies DC power to the connected vehicle. The power supply from the commercial power source to the quick charger 1 and the ordinary charger 2 is performed by a single-phase three-wire system, but may be a three-phase three-wire system.

主幹ブレーカ3の上流には、変圧器4と負荷開閉器5が配置されている。本実施形態では、全ての充電器1,2に対し、単相3線式で電力供給が行われる。他の実施形態として、急速充電器1と普通充電器2を、各々、別の主幹ブレーカに接続し、これらの各主幹ブレーカの上流に、共通の変圧器と負荷開閉器を配置することもできる。   A transformer 4 and a load switch 5 are arranged upstream of the main breaker 3. In the present embodiment, power is supplied to all the chargers 1 and 2 in a single-phase three-wire system. As another embodiment, the quick charger 1 and the normal charger 2 can be connected to different main breakers, and a common transformer and load switch can be arranged upstream of each main breaker. .

急速充電器1と普通充電器2は、各々、通信手段6を介してコントローラ7に接続されている。   The quick charger 1 and the ordinary charger 2 are each connected to the controller 7 via the communication means 6.

図2に示すように、コントローラ7は、以下に説明する登録部8と、検出部9と、判定部10と、出力部11を備えている。   As shown in FIG. 2, the controller 7 includes a registration unit 8, a detection unit 9, a determination unit 10, and an output unit 11 described below.

登録部8には、主幹ブレーカ3の定格容量を表す指標として、主幹電流(例えば、200A)が記憶されている。また、この主幹ブレーカ3の使用電流の制限値である「閾値」が、前記の主幹電流を基準として設定されている(例えば、主幹電流200Aの80%を基準として、160A)。   The registration unit 8 stores a main current (for example, 200 A) as an index representing the rated capacity of the main breaker 3. Further, the “threshold value”, which is a limit value of the current used by the main breaker 3, is set with the main current as a reference (for example, 160A with 80% of the main current 200A as a reference).

検出部9は、急速充電器1に車両が接続されたこと、および、普通充電器2に車両が接続されたことを検出する機能を備えている。例えば、急速充電器1については、車両接続後、充電スタートボタンが押圧操作され、急速充電が開始したことを検出信号としたり、充電ケーブルの接続を物理的に検出して検出信号として、車両の接続を検出することができる。普通充電器2については、車両接続後、車両と普通充電器との間でやり取りされる通信電文を検出信号として、車両の接続を検出することができる。また、検出部9は、普通充電器2に接続された車両が使用する充電電流値を実測し、その実測値に基づいて、その普通充電器2に許容する許容電流値を決定する機能も備えている。通常の普通充電は、6A〜16Aの範囲で行われるため、許容電流値の最大値は16Aとなる。   The detection unit 9 has a function of detecting that the vehicle is connected to the quick charger 1 and that the vehicle is connected to the normal charger 2. For example, for the quick charger 1, after the vehicle is connected, the charging start button is pressed and a quick start of charging is used as a detection signal, or the connection of the charging cable is physically detected as a detection signal. Connection can be detected. With respect to the ordinary charger 2, after the vehicle is connected, the connection of the vehicle can be detected by using a communication message exchanged between the vehicle and the ordinary charger as a detection signal. The detection unit 9 also has a function of measuring a charging current value used by a vehicle connected to the normal charger 2 and determining an allowable current value allowed for the normal charger 2 based on the actual measurement value. ing. Since normal normal charging is performed in the range of 6A to 16A, the maximum allowable current value is 16A.

図3に示すように、判定部10は、検出部9により急速充電器1の接続が新たに検出された際、その時点で既に車両が接続されて充電が行われている普通充電器2の許容電流値の合計値を、前記の「閾値」から引いた値(以下、初期計算値)、と、急速充電器1の定格入力電流として予め定められているされている最大入力電流値(以下、定格入力値)を比較して容量判定を行う。   As shown in FIG. 3, when the connection of the quick charger 1 is newly detected by the detection unit 9, the determination unit 10 is connected to the normal charger 2 that is already connected and charged at that time. A value obtained by subtracting the total value of allowable current values from the “threshold value” (hereinafter referred to as an initial calculated value) and a maximum input current value (hereinafter referred to as a rated input current of the quick charger 1). The rated input value) is compared and the capacity is determined.

判定部10は、前記の初期計算値が定格入力値より大きい場合には、記憶値を「最大入力電流値」として採用した上で、その時点で既に車両が接続されて充電が行われている普通充電器2の許容電流値は抑制しない判定を行う。
一方、初期計算値が定格入力値より小さい場合には、定格入力値を「最大入力電流値」として採用した上で、この「最大入力電流値」による充電を実行可能とすべく、その時点で既に車両が接続されて充電が行われている普通充電器2の許容電流値を抑制するとともに、抑制中は、新規の普通充電を禁止する判定を行う。許容電流値を抑制は、急速充電器で使用される充電電流の減少に応じて解除される。また、許容電流が所定値(例:16A)を回復した段階で、新規の普通充電を再開する。
When the initial calculation value is larger than the rated input value, the determination unit 10 adopts the stored value as the “maximum input current value”, and the vehicle is already connected and charged at that time. It is determined that the allowable current value of the ordinary charger 2 is not suppressed.
On the other hand, if the initial calculated value is smaller than the rated input value, the rated input value is adopted as the “maximum input current value”, and at that point in time, charging with this “maximum input current value” is possible While suppressing the allowable current value of the normal charger 2 that is already connected to the vehicle and being charged, a determination is made to prohibit new normal charging during the suppression. The suppression of the allowable current value is released according to a decrease in the charging current used in the quick charger. In addition, when the allowable current recovers a predetermined value (for example, 16 A), new normal charging is resumed.

なお、普通充電器2の許容電流値を制限値(例えば、最小値6A)に抑制しても、定格入力値による充電が実行できない場合には、普通充電器2の許容電流値を制限値に抑制した上で、「閾値―制限値×車両接続中の普通充電器2の台数」として求められる値(以下、再計算値)を、急速充電器1の「最大入力電流値」として採用する。   If charging with the rated input value cannot be performed even if the allowable current value of the normal charger 2 is suppressed to a limit value (for example, the minimum value 6A), the allowable current value of the normal charger 2 is set to the limit value. After the suppression, a value (hereinafter, recalculated value) obtained as “threshold−limit value × number of ordinary chargers 2 connected to the vehicle” is adopted as the “maximum input current value” of the quick charger 1.

上記の各判定に従う本発明のシステムによれば、主幹ブレーカ3の定格容量を増加させるという手段によらず、かつ、普通充電を頻繁に停止させることなく、急速充電を優先した効率のよい充電を行うことができる。   According to the system of the present invention according to each of the above determinations, efficient charging with priority given to rapid charging is performed without increasing the rated capacity of the main breaker 3 and without frequently stopping normal charging. It can be carried out.

出力部11は、判定部10で算出された前記の「最大入力電流値」を急速充電器1に向けて出力する。また、前記判定部10が抑制を必要と判定した場合には、その抑制後の許容電流値を普通充電器に向けて出力する。   The output unit 11 outputs the “maximum input current value” calculated by the determination unit 10 toward the quick charger 1. When the determination unit 10 determines that suppression is necessary, the allowable current value after the suppression is output to the normal charger.

急速充電器1は、出力部11が出力した「最大入力電流値」を受信して、その値を設定電流として設定する設定部を備えている。この設定部に設定された設定電流は、車両に出力可能な最大出力(電流・電圧)として、車両に伝達(CAN通信)される。   The quick charger 1 includes a setting unit that receives the “maximum input current value” output from the output unit 11 and sets the value as a set current. The set current set in the setting unit is transmitted to the vehicle (CAN communication) as the maximum output (current / voltage) that can be output to the vehicle.

普通充電器2は、出力部11が出力した「抑制後の許容電流値」を受信し、その値に応じて、車両への充電電流を制限する制御を行う制御部を備えている。この制御は、充電制御信号(CPLT信号)にて行われる。このように本実施形態では、普通充電器2に接続した充電電流を制限し、急速充電器1の最大入力電流値を設定する制御を行うことができる。   The ordinary charger 2 includes a control unit that receives the “allowable current value after suppression” output from the output unit 11 and performs control for limiting the charging current to the vehicle according to the value. This control is performed by a charge control signal (CPLT signal). As described above, in the present embodiment, it is possible to perform control for limiting the charging current connected to the normal charger 2 and setting the maximum input current value of the quick charger 1.

以下、具体的な実施例として本発明を説明する。以下の実施例において、「閾値」は160A(主幹電流200Aの80%)、急速充電器1に予め定められている定格入力値は、135Aとする。
(実施例1)
検出部9により急速充電器1の接続が新たに検出された際、その時点で既に車両が接続されて充電が行われている普通充電器2は1台であり、その許容電流値が16Aであった。
このとき初期計算値(160−16=144A)>定格入力値(135A)であるから、定格入力値135Aを「最大入力電流値」として採用した上で、その時点で既に車両が接続されて充電が行われている普通充電器2の許容電流値は抑制しない判定を行い、「最大入力電流値135A」を急速充電器1に向けて出力し、急速充電を行う。
(実施例2)
検出部9により急速充電器1の接続が新たに検出された際、その時点で既に車両が接続されて充電が行われている普通充電器2は2台であり、その許容電流値が16Aであった。
このとき初期計算値(160−16×2=128A)<定格入力値(135A)であるから、定格入力値135Aを「最大入力電流値」として採用した上で、この「最大入力電流値135A」による充電を実行可能とすべく、その時点で既に車両が接続されて充電が行われている普通充電器2の許容電流値を、制限値として(160−135)/2=12.5Aに抑制するとともに、抑制中は、新規の普通充電を禁止する判定を行い、「最大入力電流値135A」を急速充電器1に向けて出力し、急速充電を行う。
(実施例3)
検出部9により急速充電器1の接続が新たに検出された際、その時点で既に車両が接続されて充電が行われている普通充電器2は10台であり、その許容電流値が16Aであった。
このときは、初期計算値(160−16×10=0A)<定格入力値(135A)であって、かつ、普通充電器2の許容電流値を最小値(6A)に抑制した場合でも、定格入力値(135A)による充電が実行できないため、普通充電器2の許容電流値を最小値(6A)に抑制しつつ、「閾値―最小値×車両接続中の普通充電器2の台数=160−6×10=100A」を、急速充電器1の「最大入力電流値」として採用する判定を行う。そして、「最大入力電流値100A」を急速充電器1に向けて出力し、急速充電を行う。
Hereinafter, the present invention will be described as specific examples. In the following embodiments, the “threshold value” is 160 A (80% of the main current 200 A), and the rated input value predetermined for the quick charger 1 is 135 A.
(Example 1)
When the connection of the quick charger 1 is newly detected by the detector 9, there is only one ordinary charger 2 that is already connected and charged at that time, and its allowable current value is 16A. there were.
At this time, since the initial calculated value (160-16 = 144A)> the rated input value (135A), the rated input value 135A is adopted as the “maximum input current value”, and the vehicle is already connected and charged at that time. Is determined so as not to suppress the allowable current value of the normal charger 2, and the “maximum input current value 135A” is output to the quick charger 1 to perform quick charging.
(Example 2)
When the connection of the quick charger 1 is newly detected by the detection unit 9, there are two normal chargers 2 that are already connected and charged at that time, and the allowable current value is 16A. there were.
At this time, since the initial calculated value (160−16 × 2 = 128 A) <rated input value (135 A), after adopting the rated input value 135 A as the “maximum input current value”, this “maximum input current value 135 A” The allowable current value of the normal charger 2 that has already been connected and charged at that time is suppressed to (160−135) /2=12.5 A as a limit value so that charging can be performed by At the same time, during suppression, it is determined that new normal charging is prohibited, and “maximum input current value 135A” is output to the quick charger 1 to perform quick charging.
(Example 3)
When the connection of the quick charger 1 is newly detected by the detection unit 9, there are 10 normal chargers 2 that are already connected and charged at that time, and the allowable current value is 16A. there were.
At this time, even if the initial calculated value (160−16 × 10 = 0 A) <rated input value (135 A) and the allowable current value of the ordinary charger 2 is suppressed to the minimum value (6 A), the rated value Since charging with the input value (135A) cannot be executed, while the allowable current value of the normal charger 2 is suppressed to the minimum value (6A), “threshold-minimum value × number of normal chargers 2 connected to the vehicle = 160− It is determined that “6 × 10 = 100 A” is adopted as the “maximum input current value” of the quick charger 1. Then, the “maximum input current value 100A” is output to the quick charger 1 to perform quick charge.

(他の実施形態)
その他の実施形態として、図4に示すように、急速充電器1には三相3線式で、普通充電器2には単相3線式で、各々、配電を行い、その上流に、共通の負荷開閉器5を設置することもできる。
(Other embodiments)
As another embodiment, as shown in FIG. 4, the quick charger 1 is a three-phase three-wire system, and the ordinary charger 2 is a single-phase three-wire system. The load switch 5 can also be installed.

本実施形態では、登録部8に負荷開閉器5の定格容量を記憶し、負荷開閉器5の定格容量(例えば、300A)を基準とした「閾値」を設定して実施形態1と同様に普通充電器2に接続した充電電流を制限し、急速充電器1の最大入力電流値を設定する制御を行うことができる。   In the present embodiment, the rated capacity of the load switch 5 is stored in the registration unit 8, and a “threshold value” based on the rated capacity (for example, 300 A) of the load switch 5 is set, so that it is normal as in the first embodiment. Control for limiting the charging current connected to the charger 2 and setting the maximum input current value of the quick charger 1 can be performed.

登録部8にデマンド値を記憶させ、判定部10に、現在の使用電力と急速充電の接続時刻に基づき抑制要否を判定させることもできる。   It is also possible to store the demand value in the registration unit 8 and cause the determination unit 10 to determine whether or not the suppression is necessary based on the current use power and the connection time of the quick charge.

1 急速充電器
2 普通充電器
3 主幹ブレーカ
4 変圧器
5 負荷開閉器
6 通信手段
7 コントローラ
8 登録部
9 検出部
10 判定部
11 出力部
DESCRIPTION OF SYMBOLS 1 Quick charger 2 Normal charger 3 Master breaker 4 Transformer 5 Load switch 6 Communication means 7 Controller 8 Registration part 9 Detection part 10 Determination part 11 Output part

Claims (3)

急速充電器と普通充電器の双方を備え、
前記急速充電器と普通充電器を、各々、通信手段を介してコントローラに接続した車両充電システムであって、
前記コントローラは、
前記急速充電器および普通充電器と車両の接続状況を検出する検出部と、
前記検出部により急速充電器の接続が新たに検出された際、車両が接続されている普通充電器での車両充電に使用する許容電流値を抑制するか否かの判定、および、該急速充電器に入力される最大入力電流値の算出を行う判定部と、
前記最大入力電流値を急速充電器に向けて出力し、かつ、前記判定部が抑制を必要と判定した場合には、その抑制後の許容電流値を普通充電器に向けて出力する出力部を備え、
前記急速充電器は、前記の最大入力電流値を受信して、その値を設定電流として設定する設定部を備え、
前記普通充電器は、前記の抑制後の許容電流値を受信して、その値を、該普通充電器と接続された車両に伝達する制御部を備える
ことを特徴とする車両充電システム。
It has both a quick charger and a normal charger,
A vehicle charging system in which the quick charger and the normal charger are each connected to a controller via communication means,
The controller is
A detection unit for detecting a connection state between the quick charger and the normal charger and the vehicle;
When the connection of the quick charger is newly detected by the detection unit, the determination as to whether or not to suppress the allowable current value used for vehicle charging in the normal charger to which the vehicle is connected, and the quick charging A determination unit for calculating a maximum input current value input to the device;
An output unit that outputs the maximum input current value toward the quick charger and outputs the allowable current value after the suppression toward the normal charger when the determination unit determines that suppression is necessary. Prepared,
The quick charger includes a setting unit that receives the maximum input current value and sets the value as a set current,
The normal charger includes a control unit that receives the suppressed allowable current value and transmits the value to a vehicle connected to the normal charger.
前記判定部は、前記の許容電流値を抑制するか否かの判定を、前記の急速充電器と普通充電器の上流に配置された変圧器もしくは主幹ブレーカの定格容量を基準とした閾値に基づいて行う
ことを特徴とする請求項1記載の車両充電システム。
The determination unit determines whether to suppress the allowable current value based on a threshold value based on a rated capacity of a transformer or a main breaker arranged upstream of the quick charger and the normal charger. The vehicle charging system according to claim 1, wherein the vehicle charging system is performed.
前記判定部は、急速充電器で使用される充電電流の減少に応じて、許容電流値の抑制を解除することを特徴とする請求項1または2記載の車両充電システム。   The vehicle charging system according to claim 1, wherein the determination unit releases the suppression of the allowable current value in accordance with a decrease in charging current used in the quick charger.
JP2014178973A 2014-09-03 2014-09-03 Vehicle charging system Pending JP2016054590A (en)

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