JP2000299136A - Battery charging device - Google Patents
Battery charging deviceInfo
- Publication number
- JP2000299136A JP2000299136A JP11108634A JP10863499A JP2000299136A JP 2000299136 A JP2000299136 A JP 2000299136A JP 11108634 A JP11108634 A JP 11108634A JP 10863499 A JP10863499 A JP 10863499A JP 2000299136 A JP2000299136 A JP 2000299136A
- Authority
- JP
- Japan
- Prior art keywords
- charger
- battery
- charging
- chargers
- output power
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000007600 charging Methods 0.000 title claims abstract description 47
- 238000001514 detection method Methods 0.000 claims description 7
- 230000007423 decrease Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000004904 shortening Methods 0.000 description 2
- 102100033029 Carbonic anhydrase-related protein 11 Human genes 0.000 description 1
- 101000867841 Homo sapiens Carbonic anhydrase-related protein 11 Proteins 0.000 description 1
- 101001075218 Homo sapiens Gastrokine-1 Proteins 0.000 description 1
- 101001125854 Homo sapiens Peptidase inhibitor 16 Proteins 0.000 description 1
- 102100029324 Peptidase inhibitor 16 Human genes 0.000 description 1
- 238000010280 constant potential charging Methods 0.000 description 1
- 238000010277 constant-current charging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、バッテリ充電装置
に関する。[0001] The present invention relates to a battery charger.
【０００２】[0002]
【従来の技術】例えば、電気自動車は、ある距離を走行
した後、バッテリの充電が必要である。この種のバッテ
リ充電装置として、例えば、特開平６ー３４３２０３号
公報は、バッテリの種類の応じた充電電圧と、電流と
を、自動的に設定して充電を行う電気自動車用充電器を
開示している。2. Description of the Related Art For example, an electric vehicle needs to charge a battery after traveling a certain distance. As this type of battery charging device, for example, Japanese Patent Application Laid-Open No. 6-343203 discloses an electric vehicle charger that automatically sets and charges a charging voltage and a current according to the type of a battery. ing.
【０００３】上述した公知文献記載の技術を含め、従来
のこの種のバッテリ充電装置は、１つの充電器を備える
だけである。従って、バッテリ充電装置は、充電開始直
後に要求される大きな出力電力（充電電力）領域から、
充電が進んでバッテリに注入される出力電力が小さくな
る領域までの全スパンにおいて、動作させなければなら
ない。[0003] Including the technology described in the above-mentioned known literature, a conventional battery charger of this type has only one charger. Therefore, the battery charging device starts from a large output power (charge power) region required immediately after the start of charging.
It must operate over the entire span up to the region where charging progresses and the output power injected into the battery decreases.
【０００４】ところが、バッテリ充電装置は、一般に
は、定格電力出力時に最大効率となるように設計され
る。この最大効率を、定格電力出力領域から、定格電力
出力の１０％程度の低出力電力領域まで維持することは
できない。低出力電力領域では効率が低下するのが普通
である。However, a battery charger is generally designed to have a maximum efficiency at the time of rated power output. This maximum efficiency cannot be maintained from the rated power output range to a low output power range of about 10% of the rated power output. In the low output power region, the efficiency usually decreases.
【０００５】このため、大出力電力領域から、低出力電
力領域までの全スパンにおいて、動作させなければなら
ない従来の方式では、低出力電力領域において、充電効
率が悪くなり、充電に長時間を要することになってしま
うという問題点があった。[0005] For this reason, in the conventional system which must be operated in the entire span from the large output power range to the low output power range, the charging efficiency is deteriorated in the low output power range, and charging takes a long time. There was a problem that would be.
【０００６】[0006]
【発明が解決しようとする課題】本発明の課題は、充電
効率を向上させ、充電時間を短縮し得るバッテリ充電装
置を提供することである。SUMMARY OF THE INVENTION An object of the present invention is to provide a battery charger capable of improving charging efficiency and shortening charging time.
【０００７】[0007]
【課題を解決するための手段】上述した課題を解決する
ため、本発明に係るバッテリ充電装置は、複数の充電器
を含んでおり、前記複数の充電器は、出力端が共通に接
続されている。In order to solve the above-mentioned problems, a battery charger according to the present invention includes a plurality of chargers, and the plurality of chargers have output terminals commonly connected. I have.
【０００８】上記構成のバッテリ充電装置によれば、バ
ッテリの種類、または、充電状態に応じて、それに適し
た特性の充電器を選択して動作させることができるの
で、充電効率を向上させることができる。例えば、第１
の充電器と、第２の充電器とを含み、低出力電力領域で
は前記第１の充電器を動作させ、大出力電力領域におい
ては、前記第１の充電器と前記第２の充電器を動作させ
ることによって、複数の充電器と全出力領域で同時に動
作させた場合に比べ、低出力電力領域の効率を高くする
ことができる。[0008] According to the battery charging device having the above-described structure, a charger having characteristics suitable for the type of the battery or the state of charge can be selected and operated, so that the charging efficiency can be improved. it can. For example, the first
And a second charger, wherein the first charger is operated in a low output power range, and the first charger and the second charger are operated in a high output power range. By performing the operation, the efficiency in the low output power region can be increased as compared with the case where the plurality of chargers are simultaneously operated in the entire output region.
【０００９】また、前記第１の充電器は低出力電力領域
において第２の充電器よりも高効率で動作し、前記第２
の充電器は大出力電力領域において前記第１の充電器よ
りも高効率で動作するように選定することも可能であ
る。Further, the first charger operates with higher efficiency than the second charger in a low output power range, and
May be selected to operate with higher efficiency than the first charger in the large output power range.
【００１０】この構成によれば、低出力電力領域では前
記第１の充電器を動作させ、低出力電力領域での効率を
向上させることができる。大出力電力領域では、前記第
１の充電器及び前記第２の充電器を同時に動作させる。
これにより、充電開始直後に要求される大きな出力電力
領域から、充電が進んでバッテリに注入される出力電力
が小さくなる領域までの全スパンにおいて、高効率で充
電し、充電時間を短縮することが可能になる。According to this configuration, the first charger can be operated in the low output power range, and the efficiency in the low output power range can be improved. In the large output power region, the first charger and the second charger are operated simultaneously.
As a result, charging can be performed with high efficiency and the charging time can be shortened in the entire span from the large output power region required immediately after the start of charging to the region where the output power injected into the battery decreases as the charging proceeds. Will be possible.
【００１１】本発明の他の目的、構成及び効果について
は、添付図面を参照し、更に具体的に説明する。図は単
なる例示に過ぎない。Other objects, configurations and effects of the present invention will be described more specifically with reference to the accompanying drawings. The figures are merely examples.
【００１２】[0012]
【発明の実施の形態】図１は本発明に係るバッテリ充電
装置のブロック図である。図示されたバッテリ充電装置
は、複数ｎの充電器１０１〜１０ｎを含んでいる。充電
器１０１〜１０ｎは、出力端が共通に接続されている。
共通に接続された出力端は、出力端子１５に接続されて
いる。出力端子１５は、スイッチ１１等を経て、充電さ
れるべきバッテリ７に導かれる。バッテリ７は、例え
ば、電気自動車のメインバッテリ等である。メインバッ
テリは、車輪駆動モータに電力を供給する。FIG. 1 is a block diagram of a battery charger according to the present invention. The illustrated battery charger includes a plurality n of chargers 101-10n. The output terminals of the chargers 101 to 10n are commonly connected.
The commonly connected output terminals are connected to the output terminal 15. The output terminal 15 is guided to the battery 7 to be charged via the switch 11 and the like. The battery 7 is, for example, a main battery of an electric vehicle. The main battery supplies power to the wheel drive motor.
【００１３】充電器１０１〜１０ｎのそれぞれは、入力
側が共通に接続され、入力端子１３を介して、交流電源
９等から電力が供給される。充電器１０１〜１０ｎは、
一般には、交流電源９から供給される交流電力を直流に
変換し、更に、ＤＣーＤＣコンバータ等によって、異な
る電圧値を持つ直流に変換して出力する機能を有する。
その他、ＤＣーＤＣコンバータを制御する制御回路や、
過電圧保護回路等を含む。充電器１０１〜１０ｎによる
充電方式としては、定電流充電モード及び定電圧充電モ
ードの何れの方式を採用してもよい。Each of the chargers 101 to 10n has an input side commonly connected, and is supplied with power from an AC power supply 9 or the like via an input terminal 13. The chargers 101 to 10n
Generally, it has a function of converting AC power supplied from the AC power supply 9 to DC, and further converting the DC power into DC having different voltage values by a DC-DC converter or the like and outputting the converted DC.
In addition, a control circuit for controlling the DC-DC converter,
Including overvoltage protection circuit. As a charging method by the chargers 101 to 10n, any of a constant current charging mode and a constant voltage charging mode may be adopted.
【００１４】上記構成のバッテリ充電装置によれば、複
数ｎの充電器１０１〜１０ｎの中から、バッテリ７の種
類、または、充電状態に応じて、それに適した特性の充
電器を選択して動作させることができるので、充電効率
を向上させることができる。According to the battery charger having the above-described structure, a charger having characteristics suitable for the type or the state of charge of the battery 7 is selected from the plurality of n chargers 101 to 10n to operate. Therefore, charging efficiency can be improved.
【００１５】充電器１０１〜１０ｎの個数ｎは任意であ
るが、説明の簡単化と、理解の容易化のために、１つの
具体例として、第１の充電器１０１及び第２の充電器１
０２の２つを備える場合について説明する。Although the number n of the chargers 101 to 10n is arbitrary, for simplification of explanation and easy understanding, as one specific example, the first charger 101 and the second charger 1
02 will be described.
【００１６】この場合、例えば、第１の充電器１０１
は、低出力電力領域において、第２の充電器１０２より
も高効率で動作するような特性を有するものとする。第
２の充電器１０２は大出力電力領域において、第１の充
電器１０１よりも高効率で動作するような特性を有する
ものとする。In this case, for example, the first charger 101
Have a characteristic that operates with higher efficiency than the second charger 102 in the low output power region. The second charger 102 has such a characteristic that it operates with higher efficiency than the first charger 101 in the large output power region.
【００１７】図２は第１の充電器１０１及び第２の充電
器１０２を上述のように設定した場合の出力特性を示す
図である。横軸に充電の時間（ｈ）をとり、縦軸に出力
電力（ｋＷ）をとってある。出力電力（ｋＷ）は第１の
充電器１０１または第２の充電器１０２から出力される
電力であり、バッテリ７が受ける充電電力と等価であ
る。曲線Ｌ１１は本発明に係るバッテリ充電装置の出力
特性（充電特性）、曲線Ｌ２１は１つの充電器を用いた
従来のバッテリ充電装置の出力特性を示す。FIG. 2 is a diagram showing output characteristics when the first charger 101 and the second charger 102 are set as described above. The horizontal axis indicates the charging time (h), and the vertical axis indicates the output power (kW). The output power (kW) is the power output from the first charger 101 or the second charger 102, and is equivalent to the charging power received by the battery 7. A curve L11 indicates an output characteristic (charging characteristic) of the battery charger according to the present invention, and a curve L21 indicates an output characteristic of a conventional battery charger using one charger.
【００１８】まず、バッテリ７の充電に当たり、大きな
出力電力が要求される充電開始後のある時間領域では、
第１の充電器１０１及び第２の充電器１０２を同時に動
作させる。図２の場合、充電を開始したｔ０時に４（ｋ
Ｗ）であった出力電力が２（ｋＷ）になるｔ１時まで
は、第１の充電器１０１及び第２の充電器１０２を同時
に動作させる。これにより、バッテリ７を急速に充電す
ることができる。First, in charging the battery 7, in a certain time region after the start of charging in which a large output power is required,
The first charger 101 and the second charger 102 are operated simultaneously. In the case of FIG. 2, 4 (k) at t0 when charging was started.
The first charger 101 and the second charger 102 are operated at the same time until t1 when the output power, which is W), becomes 2 (kW). Thereby, the battery 7 can be charged quickly.
【００１９】次に、バッテリ７の充電が進行した低出力
電力領域では、第１の充電器１０１のみを動作させる。
第２の充電器１０２は動作を停止させる。図２の場合、
出力電力が２（ｋＷ）となるｔ１時から、第１の充電器
１０１のみを動作させ、第２の充電器１０２は動作を停
止させる。第１の充電器１０１は、低出力電力領域での
効率がよいから、低出力電力領域での充電効率を向上さ
せることができる。これにより、充電開始直後に要求さ
れる大きな出力電力領域から、充電が進んでバッテリに
注入される出力電力が小さくなる領域までの全スパンに
おいて、高効率で充電し、充電時間を短縮することが可
能になる。図２の場合は、従来はｔ３時まで要していた
充電時間が、それよりも短いｔ２時に終了できる。Next, in the low output power region where the charging of the battery 7 has progressed, only the first charger 101 is operated.
The second charger 102 stops operating. In the case of FIG.
From t1 when the output power becomes 2 (kW), only the first charger 101 is operated, and the operation of the second charger 102 is stopped. Since the first charger 101 has high efficiency in the low output power region, the charging efficiency in the low output power region can be improved. As a result, charging can be performed with high efficiency and the charging time can be shortened in the entire span from the large output power region required immediately after the start of charging to the region where the output power injected into the battery decreases as the charging proceeds. Will be possible. In the case of FIG. 2, the charging time conventionally required until t3 can be ended at t2, which is shorter than that.
【００２０】図３は出力電力と効率との関係を示すグラ
フである。図において、横軸に出力電力（ｋＷ）をと
り、縦軸に効率（％）をとってある。曲線Ｌ１２は、２
（ｋＷ）以上の大出力電力領域では、第１の充電器１０
１及び第２の充電器１０２を同時に動作させ、２（ｋ
Ｗ）未満の低出力電力領域では、第１の充電器１０１の
みを動作させた場合の特性である。曲線Ｌ２２は、全出
力電力領域において、第１の充電器１０１、及び、第２
の充電器１０２を同時に動作させた場合の特性である。FIG. 3 is a graph showing the relationship between output power and efficiency. In the figure, the horizontal axis indicates the output power (kW), and the vertical axis indicates the efficiency (%). Curve L12 is 2
(KW) or more, the first charger 10
The first and second chargers 102 are operated simultaneously, and 2 (k
In the low output power range below W), the characteristics are obtained when only the first charger 101 is operated. A curve L22 indicates the first charger 101 and the second charger 101 in the entire output power region.
Are characteristics when the chargers 102 are operated simultaneously.
【００２１】図３の特性Ｌ１２に示すように、２（ｋ
Ｗ）未満の低出力電力領域で、第１の充電器１０１のみ
を動作させた場合は、低出力電力領域において高効率で
動作する第１の充電器１０１の特性を有効に発揮させ、
高い充電効率を確保することができる。As shown by the characteristic L12 in FIG. 3, 2 (k
When only the first charger 101 is operated in the low output power region of less than W), the characteristics of the first charger 101 operating with high efficiency in the low output power region are effectively exhibited,
High charging efficiency can be ensured.
【００２２】これに対して、２（ｋＷ）未満の低出力電
力領域でも、第１の充電器１０１及び第２の充電器１０
２を同時に運転させた場合は、第１の充電器１０１の特
性を有効に発揮させることができず、充電効率が悪くな
る。On the other hand, even in the low output power region of less than 2 (kW), the first charger 101 and the second charger 10
When the battery chargers 2 are operated at the same time, the characteristics of the first charger 101 cannot be effectively exhibited, and the charging efficiency deteriorates.
【００２３】図１に図示されたバッテリ充電装置は、更
に、制御回路３を含んでいる。制御回路３は充電器１０
１〜１０ｎの動作を制御する。より具体的には、出力電
流Ｉ０を検出する電流検出検出手段５及び出力端子１５
に結ばれた出力電圧検出手段（図示しない）を含む。制
御回路３は、出力電流検出手段１３及び出力電圧検出手
段から供給される検出信号に基づいて、バッテリ７の充
電状態を監視する。そして、充電器１０１、１０２を制
御する。例えば、出力電流Ｉ０がある値よりも大きく、
かつ、出力電圧Ｖ０が低い場合は、大きな出力電力を必
要とするから、充電器１０１、１０２を同時に動作せる
ように制御する。The battery charger shown in FIG. 1 further includes a control circuit 3. The control circuit 3 includes a charger 10
The operations of 1 to 10n are controlled. More specifically, current detection detecting means 5 for detecting output current I0 and output terminal 15
And an output voltage detecting means (not shown) connected to the control circuit. The control circuit 3 monitors the state of charge of the battery 7 based on the detection signals supplied from the output current detecting means 13 and the output voltage detecting means. Then, the chargers 101 and 102 are controlled. For example, the output current I0 is larger than a certain value,
In addition, when the output voltage V0 is low, a large output power is required, so that the chargers 101 and 102 are controlled to operate simultaneously.
【００２４】出力電流Ｉ０が小さく、出力電圧Ｖ０が低
い場合は、バッテリ７の充電が進んだのであるから、第
１の充電器１０１のみを動作させ、第２の充電器１０２
は動作を停止させるように制御する。When the output current I0 is small and the output voltage V0 is low, since the charging of the battery 7 has advanced, only the first charger 101 is operated and the second charger 102 is operated.
Controls to stop the operation.
【００２５】[0025]
【発明の効果】以上述べたように、本発明によれば、充
電効率を向上させ、充電時間を短縮し得るバッテリ充電
装置を提供することことができる。As described above, according to the present invention, it is possible to provide a battery charger capable of improving charging efficiency and shortening charging time.
【図１】本発明に係るバッテリ充電装置のブロック図で
ある。FIG. 1 is a block diagram of a battery charging device according to the present invention.
【図２】本発明に係るバッテリ充電装置の出力特性を、
従来のバッテリ充電装置の出力特性と比較して示す図で
ある。FIG. 2 shows output characteristics of the battery charger according to the present invention.
FIG. 7 is a diagram showing a comparison with output characteristics of a conventional battery charger.
【図３】出力電力と効率との関係を示すグラフである。FIG. 3 is a graph showing a relationship between output power and efficiency.
１０１〜１０ｎ 充電器 ７ バッテリ 101-10n Charger 7 Battery
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 5G003 AA01 BA01 CA01 CA11 CC08 5H030 AA02 AA08 AS18 BB04 DD04 DD09 5H115 PG04 PI16 PI29 PO09 PU01 PV02 TI05 TI06 TR19 TU05 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 5G003 AA01 BA01 CA01 CA11 CC08 5H030 AA02 AA08 AS18 BB04 DD04 DD09 5H115 PG04 PI16 PI29 PO09 PU01 PV02 TI05 TI06 TR19 TU05
Claims (5)
ッテリ充電装置。1. An apparatus for charging a battery, comprising: a plurality of chargers, wherein the plurality of chargers have their output sides connected in common.
であって、 前記複数の充電器は、第１の充電器と、第２の充電器と
を含み、 低出力電力領域では、第１の充電器を動作させ、 大出力電力領域では、第１の充電器及び第２の充電器を
同時に動作させるバッテリ充電装置。2. The battery charger according to claim 1, wherein the plurality of chargers include a first charger and a second charger, and in a low output power region, the first charger includes a first charger and a second charger. A battery charger that operates the first charger and the second charger simultaneously in a large output power range.
であって、 第１の充電器は、低出力電力領域において、他の充電器
よりも、高効率で動作し、 第２の充電器は、大出力電力領域において前記第１の充
電器よりも高効率で動作するバッテリ充電装置。3. The battery charger according to claim 2, wherein the first charger operates with higher efficiency than the other chargers in a low output power range. Is a battery charger that operates with higher efficiency than the first charger in a large output power range.
ッテリ充電装置であって、 制御回路を含み、前記制御回路は、前記複数の充電器の
動作を制御するバッテリ充電装置。4. The battery charger according to claim 1, further comprising a control circuit, wherein the control circuit controls an operation of the plurality of chargers.
であって、 出力電流検出手段及び出力電圧検出手段を含み、 前記制御回路は、前記出力電流検出手段及び出力電圧検
出手段から供給される検出信号に基づいて、前記充電器
を制御するバッテリ充電装置。5. The battery charging device according to claim 4, further comprising an output current detection unit and an output voltage detection unit, wherein the control circuit is supplied from the output current detection unit and the output voltage detection unit. A battery charger that controls the charger based on a detection signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11108634A JP2000299136A (en) | 1999-04-15 | 1999-04-15 | Battery charging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11108634A JP2000299136A (en) | 1999-04-15 | 1999-04-15 | Battery charging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000299136A true JP2000299136A (en) | 2000-10-24 |
Family
ID=14489781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11108634A Pending JP2000299136A (en) | 1999-04-15 | 1999-04-15 | Battery charging device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000299136A (en) |
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