JP2014030340A - 蓄電ユニット及び太陽光発電ユニット - Google Patents
蓄電ユニット及び太陽光発電ユニット Download PDFInfo
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- JP2014030340A JP2014030340A JP2013133020A JP2013133020A JP2014030340A JP 2014030340 A JP2014030340 A JP 2014030340A JP 2013133020 A JP2013133020 A JP 2013133020A JP 2013133020 A JP2013133020 A JP 2013133020A JP 2014030340 A JP2014030340 A JP 2014030340A
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- Prior art keywords
- power storage
- storage device
- temperature
- heater
- terminal
- Prior art date
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- Granted
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Images
Classifications
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- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
- H01M10/443—Methods for charging or discharging in response to temperature
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- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
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- H—ELECTRICITY
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- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
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- H01M10/465—Accumulators structurally combined with charging apparatus with solar battery as charging system
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- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
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- H01—ELECTRIC ELEMENTS
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- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/657—Means for temperature control structurally associated with the cells by electric or electromagnetic means
- H01M10/6571—Resistive heaters
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- H—ELECTRICITY
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- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
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- H01M10/052—Li-accumulators
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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
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Abstract
【解決手段】蓄電装置と、当該蓄電装置に隣接して設置されるヒータと、当該蓄電装置及び当該ヒータの少なくとも一方に隣接して配置され、当該蓄電装置及び当該ヒータの少なくとも一方の温度を検知する温度センサと、当該蓄電装置の温度が第1の温度より低い場合は、当該蓄電装置の充電を行わず、当該ヒータにより当該蓄電装置を加熱する制御を行い、当該蓄電装置の温度が当該第1の温度以上の場合は、当該ヒータによる当該蓄電装置の加熱を行わず、当該蓄電装置を充電する制御を行う制御回路と、を有する蓄電ユニットに関する。
【選択図】図2
Description
本実施の形態を以下に説明する。
本実施の形態の蓄電装置について、以下に説明する。
図2に本実施の形態の蓄電ユニットの構成を示す。図2(A)は、蓄電ユニットに含まれる蓄電装置310、ヒータ400、温度センサ410を示している。蓄電装置310の詳細な説明は上述したので、ここでは省略する。なお蓄電装置として、図2ではラミネート型の蓄電装置310を用いるが、別の形状の蓄電装置を用いてもよい。ヒータ400は端子401a及び端子401bを有しており、温度センサ410は端子411a及び端子411bを有している。
以下に、PTCサーミスタの電気抵抗の温度依存性を利用して充電の可否を制御する回路について説明する。
図3(A)に、ヒータ400としてPTCサーミスタを用いた場合の蓄電ユニットの回路の一部を示す。
図3(A)に示す回路において、温度Tがキュリー温度Tcより低い温度での動作を、図4に示す。本実施の形態において、キュリー温度Tcは0℃以上10℃以下とし、具体的には、例えば概略5℃とする。
図3(A)に示す回路250において、温度Tがキュリー温度Tc以上の温度での動作を、図5に示す。
図3(A)に示す回路250では、温度Tがキュリー温度Tc以上の温度で充電が許容される。従って、蓄電装置300の温度Tが、不動態被膜が破壊される程度の高温、又は、蓄電装置300が発火する恐れがある高温となっても、充電が許容される。
本実施の形態では、ヒータ400としてPTCサーミスタではなく、温度によらず抵抗がほぼ一定のヒータを用い、かつ、温度センサを用いた蓄電ユニットについて説明する。
図7(A)に、本実施の形態の蓄電ユニットの回路の一部を示す。
図7(A)に示す回路260において、温度Tが温度T1より低い温度での動作を、図8に示す。
図7(A)に示す回路260において、温度TがT1以上での動作を、図9に示す。
図7(A)に示す回路260では、T1以上の温度で、上述のように、充電が許容される。従って、蓄電装置300の温度Tが、不動態被膜が破壊される程度の高温、又は、蓄電装置300が発火する恐れがある高温となっても、充電が許容される。
以下に、図7(A)及び図10とは異なる回路構成を有する蓄電ユニットについて説明する。
図11に示す回路270において、温度TがT1より低い場合の動作を、図12(A)及び図12(B)に示す。
図11に示す回路270において、温度TがT1以上の温度での動作を、図13に示す。
図11に示す回路270では、温度T1以上の温度で、上述のように、充電が許容される。この場合、蓄電装置300の温度Tが、不動態被膜が破壊される程度の高温、又は、蓄電装置300が発火する恐れがある高温となっても、充電が許容される。
本実施の形態では、蓄電装置に蓄えられる電力の電源として、太陽電池を用いた例について説明する。
200 太陽電池
201 抵抗
202 トランジスタ
203 ダイオード
211 端子
212 端子
221 端子
222 端子
250 回路
255 回路
260 回路
261 トランジスタ
262 ダイオード
263 トランジスタ
264 ダイオード
270 回路
300 蓄電装置
301 正極集電体
302 正極活物質層
304 負極活物質層
305 負極集電体
307 セパレータ
308 電解質
309 外装体
310 蓄電装置
311 正極
312 負極
400 ヒータ
403 配線
401a 端子
401b 端子
410 温度センサ
411a 端子
411b 端子
500 外装体
501a 端子
501b 端子
502a 端子
502b 端子
503a 端子
503b 端子
550 電流制御回路
551 コンデンサ
552 抵抗
553 コイル
554 ダイオード
555 トランジスタ
561 電源
562 負荷
570 制御回路
580 制御回路
590 制御回路
611 抵抗
612 抵抗
650 MPPT回路
651 コンデンサ
652 抵抗
653 コイル
654 ダイオード
655 トランジスタ
670 制御回路
680 制御回路
690 制御回路
Claims (11)
- 蓄電装置と、
前記蓄電装置に隣接して設置されるヒータと、
前記蓄電装置及び前記ヒータの少なくとも一方に隣接して配置され、前記蓄電装置及び前記ヒータの少なくとも一方の温度を検知する温度センサと、
前記蓄電装置の温度が第1の温度より低い場合は、前記蓄電装置の充電を行わず、前記ヒータにより前記蓄電装置を加熱する制御を行い、前記蓄電装置の温度が前記第1の温度以上の場合は、前記ヒータによる前記蓄電装置の加熱を行わず、前記蓄電装置を充電する制御を行う制御回路と、
を有することを特徴とする蓄電ユニット。 - 請求項1において、
前記蓄電装置の温度が、前記第1の温度より高い第2の温度以上の場合は、充電を行わないことを特徴とする蓄電ユニット。 - 蓄電装置と、
前記蓄電装置に隣接して設置され、キュリー温度Tc以上で電気抵抗が増加するヒータと、
前記蓄電装置の温度をTとすると、T<Tcの場合は、前記蓄電装置の充電を行わず、前記ヒータにより前記蓄電装置を加熱する制御を行い、T≧Tcの場合は、前記ヒータによる前記蓄電装置の加熱を行わず、前記蓄電装置を充電する制御を行う制御回路と、
を有することを特徴とする蓄電ユニット。 - 蓄電装置と、
前記蓄電装置に隣接して設置され、キュリー温度Tc以上で電気抵抗が増加するヒータと、
前記蓄電装置及び前記ヒータの少なくとも一方に隣接して配置され、前記蓄電装置及び前記ヒータの少なくとも一方の温度を検知する温度センサと、
前記蓄電装置の温度をTとすると、T<Tcの場合は、前記蓄電装置の充電を行わず、前記ヒータにより前記蓄電装置を加熱する制御を行い、T≧Tcの場合は、前記ヒータによる前記蓄電装置の加熱を行わず、前記蓄電装置を充電する制御を行う制御回路と、
を有することを特徴とする蓄電ユニット。 - 請求項3又は請求項4において、
前記ヒータは、PTCサーミスタであることを特徴とする蓄電ユニット。 - 請求項4又は請求項5において、
任意の温度Th(ただしTh>Tc)とし、
前記制御回路は、T≧Thの場合は、前記蓄電装置を充電しない制御を行うことを特徴とする蓄電ユニット。 - 蓄電装置と、
前記蓄電装置に隣接して設置され、温度によらず電気抵抗が一定であるヒータと、
前記蓄電装置及び前記ヒータの少なくとも一方に隣接して配置され、前記蓄電装置及び前記ヒータの少なくとも一方の温度を検知する温度センサと、
前記蓄電装置の温度をTとし、所定の温度をTdとすると、T<Tdの場合は、前記蓄電装置の充電を行わず、前記ヒータにより前記蓄電装置を加熱する制御を行い、T≧Tdの場合は、前記ヒータによる前記蓄電装置の加熱を行わず、前記蓄電装置を充電する制御を行う制御回路と、
を有することを特徴とする蓄電ユニット。 - 請求項7において、
任意の温度Th(ただしTh>Td)とし、
前記制御回路は、T≧Thの場合は、前記蓄電装置を充電しない制御を行うことを特徴とする蓄電ユニット。 - 請求項4乃至請求項8のいずれか一項において、
前記蓄電装置は、定電流により充電されることを特徴とする蓄電ユニット。 - 請求項1乃至請求項9のいずれか一項において、
前記蓄電装置は、負極の活物質に炭素材料が用いられたリチウム二次電池であることを特徴とする蓄電ユニット。 - 請求項1乃至請求項10のいずれか一項に記載の蓄電ユニットと、
太陽電池と、
を有し、
前記蓄電装置に蓄えられる直流電力は、前記太陽電池により発電された直流電力であることを特徴とする太陽光発電ユニット。
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