JP2019097235A - Renewable energy storage and utilization method - Google Patents
Renewable energy storage and utilization method Download PDFInfo
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- JP2019097235A JP2019097235A JP2017222338A JP2017222338A JP2019097235A JP 2019097235 A JP2019097235 A JP 2019097235A JP 2017222338 A JP2017222338 A JP 2017222338A JP 2017222338 A JP2017222338 A JP 2017222338A JP 2019097235 A JP2019097235 A JP 2019097235A
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- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- 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
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- 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
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
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- Electric Propulsion And Braking For Vehicles (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
Description
本願発明は、太陽光発電等再生可能エネルギーの安定供給および普及促進を目的としたエネルギー蓄積（蓄電）およびその利用方法に関する。 The present invention relates to energy storage (storage) for the purpose of stable supply and diffusion promotion of renewable energy such as solar power generation and a method of using the same.
再生可能エネルギーの主たる蓄エネルギー（蓄電）方法として、専用大容量蓄電池への蓄電（特許文献１）、あるいは水素ガス等他のエネルギー媒体への変換（特許文献２、特許文献３）がある。 As a main energy storage (storage) method of renewable energy, there is storage of electricity in a dedicated large-capacity storage battery (Patent Document 1), or conversion to another energy medium such as hydrogen gas (Patent Document 2, Patent Document 3).
従来の再生可能エネルギーの蓄積方法では、エネルギー蓄積のための専用装置（大容量二次電池等）が必要となること、あるいは再生可能エネルギーを他の形態のエネルギー蓄積媒体（水素等）に変換することによって、再生可能エネルギーの利用効率が低下すること、等の問題がある。 Conventional methods for storing renewable energy require that a dedicated device (such as a large capacity secondary battery) for energy storage be required, or convert renewable energy into another form of energy storage medium (such as hydrogen) In some cases, the use efficiency of renewable energy decreases, etc.
本願発明は、再生可能エネルギーの利用目的としてバッテリー交換式ＥＶ（ＥＶ用の電力補給を、ＥＶに搭載されているバッテリーに直接行うのではなく、あらかじめ満充電されている交換用バッテリーと交換・搭載することによって行うＥＶ）用の交換バッテリーへの充電を想定し、再生可能エネルギーの蓄積方法として、その利用目的であるＥＶ用交換バッテリーを利用することによって、再生可能エネルギーの利用効率を上げるとともに、ＥＶ（電気自動車）の大容量二次電池用充電電力を、通常の化石燃料を使用した発電電力ではなく、再生可能エネルギーによる発電電力とすることによって、ＥＶとしての総合エネルギー効率を向上させる方法を提供しようとするものである。 In the present invention, battery-replaceable EV (not for directly supplying power to an EV with a battery mounted on the EV but for replacement with a fully charged replacement battery for the purpose of using renewable energy) Assuming that the replacement battery for EV) is charged, and using the EV replacement battery, which is the purpose of its use, as a method of accumulating renewable energy, to increase the utilization efficiency of the renewable energy, A method to improve the overall energy efficiency as an EV by converting the charging power for a large capacity secondary battery of an EV (electric car) into a power generated by renewable energy instead of using a normal fossil fuel It is intended to be provided.
現状のＥＶ用大容量二次電池はそのエネルギー密度の不足から、ＥＶとしてガソリン車並みの航続距離を得ようとすると、大容量二次電池の重量が大きくなるため、一定以上の容量とすることが困難となり、必然的に航続距離が短くなる、という致命的な欠陥を有している。
この問題を解決する一方法として、ＥＶをＥＶ本体部とバッテリー部に分離し、前記分離したバッテリー部の容量は許容できる範囲で小容量とする方法が提案されている（特許文献４）。
上記方法では、バッテリー部のエネルギー補給は、ＥＶに搭載されたバッテリー部への直接充電ではなく、バッテリーステーションで事前に充電済の（ＥＶに搭載されているバッテリーと同一仕様の）バッテリー部との交換を原則としている。
Due to the lack of energy density, the current high-capacity secondary batteries for EVs should have a certain capacity or more because the weight of the large-capacity secondary batteries increases when trying to obtain a cruising distance equivalent to gasoline vehicles as an EV. It has a fatal defect that the cruising distance becomes difficult and inevitably the cruising distance becomes short.
As a method of solving this problem, a method has been proposed in which EV is separated into an EV main body and a battery, and the capacity of the separated battery is made small within an acceptable range (Patent Document 4).
In the above method, energy supply to the battery unit is not direct charging to the battery unit mounted in the EV, but with the battery unit charged in advance in the battery station (of the same specifications as the battery mounted in the EV) The principle is exchange.
上記の如くバッテリー部容量を小容量とすることによって、ＥＶの航続距離は従来のＥＶに比べて当然短くなるが、この問題は、走行によって残電力が少なくなったバッテリーは、あらかじめ満充電されているバッテリーとの交換・搭載で解決される。
即ち走行中にバッテリー残電力が乏しくなったＥＶは、バッテリーステーションで、残電力が少なくなったバッテリーに代えて満充電済のバッテリーに交換・搭載するが、このバッテリーの交換・搭載に要する時間が、搭載されているバッテリーへ急速充電する場合に比べて、はるかに短ければ（例えば数分以内であれば）、実質的に航続距離は無限大とみなすことができる。
As described above, by making the battery part capacity small, the cruising distance of the EV naturally becomes shorter compared to the conventional EV, but the problem is that the battery whose remaining power is reduced by running is fully charged in advance. It is solved by exchange and installation with the battery.
That is, the EV, which has run out of battery power while traveling, is replaced and mounted on a fully charged battery in place of the battery whose battery power is low in the battery station. If the battery is much shorter (e.g., within a few minutes) than when the battery is rapidly charged, the cruising distance can be substantially regarded as infinite.
しかし、上記の如きバッテリー交換式ＥＶに限らず、通常のＥＶにおいても、バッテリーへの充電電力が化石エネルギーを用いての発電によるものの場合、その総合エネルギー効率（ＷＥＬＬ ＴＯ ＷＨＥＥＬ 効率）は、ガソリン車と大差ないレベルとなる。
したがって、ＥＶを真にエコカーとする、即ち総合エネルギー効率をガソリン車に比べて大幅に向上させる、ためには、使用する電力の生成方法として、化石燃料によるものでなく、再生可能エネルギーによるものとする必要がある。
However, not only in the above-mentioned battery-replaceable EV but also in a normal EV, if the charging power to the battery is generated by generation using fossil energy, the overall energy efficiency (WELL TO WHEEL efficiency) is a gasoline car The level is not so different.
Therefore, in order to make EV a truly eco-car, that is, to significantly improve the overall energy efficiency as compared to a gasoline-powered vehicle, it is not a fossil fuel but a renewable energy as a method of generating power used. There is a need to.
本願発明は上記ＥＶの総合エネルギー効率向上のためであると同時に、再生可能エネルギーの蓄エネルギー方法として、前記バッテリー交換式ＥＶの交換用バッテリーを蓄エネルギー装置として直接使用することによって、再生可能エネルギーのエネルギー利用効率を高いレベルに保ったまま、バッテリー交換式ＥＶ用の交換バッテリー充電電力としようとするものである。 The present invention is intended to improve the overall energy efficiency of the EV, and at the same time, as a method of storing renewable energy, by directly using the replacement battery of the battery-replaceable EV as the stored energy device, While maintaining energy utilization efficiency at a high level, it is intended to be used as replacement battery charging power for a battery-replaceable EV.
この結果、太陽光発電等の再生可能エネルギーによる発電電力の一時蓄積のための専用蓄電装置あるいは蓄電用媒体は不要となると同時に、再生可能エネルギーによって発電された電力をバッテリー交換式ＥＶ用の小容量バッテリーにＥＶ用電力として直接効率よく利用することが可能となる。 As a result, a dedicated storage device or storage medium for temporary storage of generated power by renewable energy such as solar power generation becomes unnecessary, and at the same time power generated by renewable energy can be used as a small capacity for battery-replaceable EV It becomes possible to use the battery directly and efficiently as EV power.
本願発明の効果的な実施のためには、太陽光等の再生可能エネルギーによる発電出力を効率的に電池交換式ＥＶの交換用バッテリーの充電入力とする必要がある。そのためには原則的に、交換用バッテリーの充電および交換を行うバッテリーステーション毎に、当該バッテリーステーションでの再生可能エネルギー発電能力（電力量）と、交換用バッテリー（群）のトータル充電可能容量を整合させる必要がある。併せて交換用バッテリー（群）への充電すべき電力量と再生可能エネルギーによる発電電力量間に過不足が生じる場合に備えて、系統商用電力との電力売買も可能とする必要がある。 In order to effectively implement the present invention, it is necessary to efficiently use the power generated by renewable energy such as sunlight as the charge input for the replacement battery of the battery-replaceable EV. To that end, in principle, for each battery station that performs charging and replacement of the replacement battery, the renewable energy generation capacity (electric energy) at the battery station and the total chargeable capacity of the replacement battery (group) are matched. You need to At the same time, it is necessary to make it possible to exchange power with the system commercial power, in case an excess or deficiency occurs between the amount of power to be charged to the replacement battery (s) and the amount of power generated by the renewable energy.
本願発明によって、再生可能エネルギーの具体的用途として、バッテリー交換式ＥＶが特定・明確化されると同時に、再生可能エネルギーの蓄エネルギー方法として、その使用ターゲットであるバッテリー交換式ＥＶ用交換バッテリーに直接蓄電できることから、再生可能エネルギー利用効率の向上にもつながる。 According to the present invention, as a specific application of renewable energy, a battery-replaceable EV is specified and clarified, and at the same time, as a method of storing renewable energy, directly to a battery-replaceable EV replacement battery as a target of use. Being able to store electricity leads to the improvement of renewable energy utilization efficiency.
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| JP2017222338A JP2019097235A (en) | 2017-11-18 | 2017-11-18 | Renewable energy storage and utilization method |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006202660A (en) * | 2005-01-24 | 2006-08-03 | Ntt Power & Building Facilities Inc | Secondary battery control system and secondary battery control method |
| JP2013069691A (en) * | 2007-04-02 | 2013-04-18 | Mitoshi Ishii | Rechargeable battery, rechargeable battery housing device, rechargeable battery charging device, and used amount adjusting device for rechargeable battery |
| JP2015015827A (en) * | 2013-07-04 | 2015-01-22 | レスク株式会社 | Battery replacement system for electric vehicle and program |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006202660A (en) * | 2005-01-24 | 2006-08-03 | Ntt Power & Building Facilities Inc | Secondary battery control system and secondary battery control method |
| JP2013069691A (en) * | 2007-04-02 | 2013-04-18 | Mitoshi Ishii | Rechargeable battery, rechargeable battery housing device, rechargeable battery charging device, and used amount adjusting device for rechargeable battery |
| JP2015015827A (en) * | 2013-07-04 | 2015-01-22 | レスク株式会社 | Battery replacement system for electric vehicle and program |
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