JP2003174734A - Hybrid secondary battery - Google Patents
Hybrid secondary batteryInfo
- Publication number
- JP2003174734A JP2003174734A JP2001372350A JP2001372350A JP2003174734A JP 2003174734 A JP2003174734 A JP 2003174734A JP 2001372350 A JP2001372350 A JP 2001372350A JP 2001372350 A JP2001372350 A JP 2001372350A JP 2003174734 A JP2003174734 A JP 2003174734A
- Authority
- JP
- Japan
- Prior art keywords
- secondary battery
- battery
- lead
- lithium
- hybrid
- 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.)
- Abandoned
Links
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
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ハイブリッド二次
電池に係り、特に、水溶液系二次電池と非水系二次電池
とを並列に接続したハイブリッド二次電池に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hybrid secondary battery, and more particularly to a hybrid secondary battery in which an aqueous solution type secondary battery and a non-aqueous type secondary battery are connected in parallel.
【０００２】[0002]
【従来の技術】従来、自動車には１２Ｖ系鉛蓄電池を内
蔵した電源システム（１４Ｖシステム）が用いられてき
た。該１４Ｖシステムでは、１２Ｖ系鉛蓄電池から自動
車のエンジンを始動する起動装置（スターターモータ）
に電流を供給（放電）し、エンジンが始動した後は、エ
ンジンの回転力によって作動する発電機から１２Ｖ系鉛
蓄電池に電流が常時供給（充電）される。ところが、自
動車の減速時のエネルギーは、熱として消費されてい
た。2. Description of the Related Art Conventionally, a power supply system (14V system) incorporating a 12V lead storage battery has been used in an automobile. In the 14V system, a starting device (starter motor) for starting an automobile engine from a 12V lead-acid battery
After the electric current is supplied (discharged) to the engine and the engine is started, the electric current is constantly supplied (charged) from the generator operated by the rotational force of the engine to the 12V lead-acid battery. However, the energy when the vehicle is decelerated was consumed as heat.
【０００３】近年、１２Ｖ系鉛蓄電池に代って、３６Ｖ
系鉛蓄電池を搭載する新電源システム（４２Ｖシステ
ム）が提案されている。該４２Ｖシステムでは、自動車
のエンジンを始動する車輌起動装置として、高出力なモ
ータジェネレータを使用することが可能となった。この
ため、従来熱として消費されていた自動車の減速時にお
けるエネルギーは、モータジェネレータにより電気エネ
ルギーに変換され、回生エネルギーとして３６Ｖ系鉛蓄
電池に供給（充電）される。また、停止状態からの加速
時には、３６Ｖ系鉛蓄電池からの電気エネルギーでモー
タを回転させて走行することができる。走行中には、該
３６Ｖ系鉛蓄電池は、自動車の減速時の回生エネルギー
を変換した電気エネルギーにより、電流を供給（充電）
される。従って新電源システムによれば、エネルギー効
率が高められ、自動車の燃費向上、排気ガスの排出量の
低減を図ることができる。In recent years, instead of the 12V lead-acid battery, 36V
A new power supply system (42V system) equipped with a lead-acid battery has been proposed. In the 42V system, a high-power motor generator can be used as a vehicle starting device for starting the engine of an automobile. Therefore, the energy that is conventionally consumed as heat when the vehicle is decelerated is converted into electric energy by the motor generator and is supplied (charged) to the 36V lead acid battery as regenerative energy. Further, at the time of acceleration from the stopped state, it is possible to rotate the motor by electric energy from the 36V lead acid battery to run. While running, the 36V lead acid battery supplies (charges) a current with electric energy converted from regenerative energy during deceleration of the automobile.
To be done. Therefore, according to the new power supply system, the energy efficiency can be improved, the fuel efficiency of the automobile can be improved, and the exhaust gas emission amount can be reduced.
【０００４】しかし、４２Ｖシステムに使用されるモー
タジェネレータは、３〜４ｋＷと高出力であり、回生時
の電流値は４０〜８０Ａ（２〜４ＣＡ相当）に達する。
鉛蓄電池は、充電率が１ＣＡ以上の電流値になると、充
電時の副反応である水の分解反応が促進され、充電効率
が落ちて電池寿命に悪影響を及ぼす。このため、従来の
鉛蓄電池で、このような大電流充電を受け入れることは
難しい。そこで、大電流を受け入れる受け入れ性能のよ
いリチウムイオン二次電池とのハイブリッド二次電池が
考案されている。However, the motor generator used in the 42V system has a high output of 3 to 4 kW, and the current value during regeneration reaches 40 to 80 A (equivalent to 2 to 4 CA).
When the charging rate of the lead storage battery reaches a current value of 1 CA or more, the decomposition reaction of water, which is a side reaction at the time of charging, is promoted, the charging efficiency drops, and the battery life is adversely affected. Therefore, it is difficult for the conventional lead-acid battery to accept such a large current charge. Therefore, a hybrid secondary battery with a lithium-ion secondary battery that accepts a large current and has good acceptance performance has been devised.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、リチウ
ムイオン二次電池を鉛蓄電池と組み合わせることにより
受け入れ性能を確保することはできるがコスト高にな
る。コスト高を抑えるためには、電源システムに用いら
れるリチウムイオン二次電池の容量を小さくすればよい
が、容量を小さくするとエンジン始動時などの放電率が
大きくなるという出力性能の面での問題が生じる。However, by combining the lithium ion secondary battery with the lead storage battery, the receiving performance can be secured, but the cost becomes high. In order to keep the cost down, it is sufficient to reduce the capacity of the lithium-ion secondary battery used in the power supply system, but if the capacity is reduced, there is a problem in terms of output performance that the discharge rate at engine start and the like increases. Occurs.
【０００６】本発明は、上記事案に鑑み、受け入れ性能
を確保すると共に出力性能に優れたハイブリッド二次電
池を提供することを課題とする。[0006] In view of the above problems, it is an object of the present invention to provide a hybrid secondary battery that secures acceptance performance and is excellent in output performance.
【０００７】[0007]
【課題を解決するための手段】上記課題を解決するため
に、本発明は、水溶液系二次電池と非水系二次電池とを
並列に接続したハイブリッド二次電池において、充電時
に前記非水系二次電池に流れる電流値が前記水溶液系二
次電池に流れる電流値より大きく、放電時に前記水溶液
系二次電池に流れる電流値が前記非水系二次電池に流れ
る電流値より大きいことを特徴とする。In order to solve the above problems, the present invention relates to a hybrid secondary battery in which an aqueous solution type secondary battery and a non-aqueous type secondary battery are connected in parallel, and the non-aqueous type secondary battery is used during charging. The current value flowing in the secondary battery is larger than the current value flowing in the aqueous solution secondary battery, and the current value flowing in the aqueous solution secondary battery at the time of discharging is larger than the current value flowing in the non-aqueous secondary battery. .
【０００８】本発明では、水溶液系二次電池と非水系二
次電池とが並列に接続されており、水溶液系二次電池の
抵抗より非水系二次電池の抵抗が小さいので、充電時に
非水系二次電池に流れる電流値を水溶液系二次電池に流
れる電流値より大きくすることができると共に、水溶液
系二次電池の容量を非水系二次電池の容量より大きくす
ることで、放電時に水溶液系二次電池に流れる電流値を
非水系二次電池に流れる電流値より大きくすることがで
きるので、受け入れ性能と出力性能に優れたハイブリッ
ド二次電池とすることができる。According to the present invention, the aqueous secondary battery and the non-aqueous secondary battery are connected in parallel, and the resistance of the non-aqueous secondary battery is smaller than the resistance of the aqueous secondary battery. The current value flowing in the secondary battery can be made larger than the current value flowing in the aqueous secondary battery, and the capacity of the aqueous secondary battery can be made larger than that of the non-aqueous secondary battery, so that the aqueous solution at the time of discharge can be obtained. Since the value of the current flowing through the secondary battery can be made larger than the value of the current flowing through the non-aqueous secondary battery, a hybrid secondary battery having excellent receiving performance and output performance can be obtained.
【０００９】この場合において、水溶液系二次電池は、
鉛蓄電池で構成されていることが好ましく、鉛蓄電池
は、１８セルを直列に接続した３６Ｖ系鉛蓄電池である
ことが更に好ましい。また、非水系二次電池は、リチウ
ム二次電池で構成されていることが好ましく、リチウム
二次電池は、１０又は１１セルを直列に接続した３６Ｖ
系リチウムイオン二次電池であることが更に好ましい。In this case, the aqueous solution type secondary battery is
The lead-acid battery is preferably a lead-acid battery, and the lead-acid battery is more preferably a 36V lead-acid battery in which 18 cells are connected in series. Further, the non-aqueous secondary battery is preferably composed of a lithium secondary battery, and the lithium secondary battery is 36 V in which 10 or 11 cells are connected in series.
A lithium-ion secondary battery is more preferable.
【００１０】[0010]
【発明の実施の形態】以下、図面を参照して、本発明が
適用されるハイブリッド二次電池の実施の形態について
説明する。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a hybrid secondary battery to which the present invention is applied will be described below with reference to the drawings.
【００１１】（構成）
〔ハイブリッド二次電池〕図１に示すように、本実施形
態のハイブリッド二次電池は、密閉型鉛蓄電池を１８個
（１８セル）直列に接続した鉛蓄電池１（３６Ｖ−９Ａ
ｈ）と、３．６Ｖ−２Ａｈのリチウムイオン二次電池を
１０又は１１個（１０又は１１セル）直列に接続したリ
チウム二次電池２とが並列接続されて構成されている。
従って、鉛蓄電池１は、リチウム二次電池２より設計容
量で４．５倍程大きな容量を有している。鉛蓄電池１及
びリチウム二次電池２の正極端子は、一端がＧＮＤに接
続されたモータージェネレータ３の他端及び一端がＧＮ
Ｄに接続された起動装置（スタータモータ）等の負荷４
の他端に接続されている。また、鉛蓄電池１及びリチウ
ム二次電池２の負極端子はＧＮＤに接続されている。(Constitution) [Hybrid Secondary Battery] As shown in FIG. 1, the hybrid secondary battery of the present embodiment is a lead storage battery 1 (36V-) in which 18 sealed lead storage batteries (18 cells) are connected in series. 9A
h) and a lithium secondary battery 2 in which 10 or 11 (10 or 11 cells) lithium ion secondary batteries of 3.6V-2Ah are connected in series are configured to be connected in parallel.
Therefore, the lead storage battery 1 has a design capacity that is about 4.5 times larger than the lithium secondary battery 2. The positive electrode terminals of the lead storage battery 1 and the lithium secondary battery 2 have the other end and one end of the motor generator 3 whose one end is connected to GND.
Load 4 such as a starter (starter motor) connected to D
Is connected to the other end of. Further, the negative electrode terminals of the lead storage battery 1 and the lithium secondary battery 2 are connected to GND.
【００１２】〔鉛蓄電池〕本実施形態に使用される鉛蓄
電池としては、いわゆる密閉型鉛蓄電池を例示すること
ができる。この電池は次のようにして準備される。正極
には二酸化鉛、負極には海綿状鉛を使用し、正、負極及
びガラス繊維セパレータを用いて、積層した極板群を作
製し、電槽内に挿入する。これに制御弁取付箇所を開放
した蓋をつけ、電解液である希硫酸を注入し、制御弁を
取付けて電池を密閉化する。[Lead Storage Battery] As the lead storage battery used in the present embodiment, a so-called sealed lead storage battery can be exemplified. This battery is prepared as follows. Lead dioxide is used for the positive electrode and spongy lead is used for the negative electrode. A positive electrode group, a negative electrode and a glass fiber separator are used to prepare a laminated electrode plate group, which is inserted into a battery case. A lid with an open control valve attachment point is attached to this, dilute sulfuric acid as an electrolytic solution is injected, and a control valve is attached to seal the battery.
【００１３】〔リチウムイオン二次電池〕本実施形態に
使用されるリチウムイオン二次電池としては、マンガン
系のリチウムイオン二次電池を例示することができる。
この電池は次のようにして準備される。正極にはリチウ
ムを含んだマンガン酸化物、負極には活物質である炭素
粉末が使用される。正、負極及びセパレータを用いて、
捲回式の電極体を作製し、円筒状電池缶に挿入する。エ
チレンカーボネート（ＥＣ）とジメチルカーボネート
（ＤＭＣ）とジエチルカーボネート（ＤＥＣ）との混合
有機溶媒に、６フッ化リン酸リチウム（ＬｉＰＦ６）を
１モル／リットル溶解した電解液を電池缶内に注入し、
正極端子を兼ねる封口体にて密閉する。[Lithium Ion Secondary Battery] As the lithium ion secondary battery used in the present embodiment, a manganese-based lithium ion secondary battery can be exemplified.
This battery is prepared as follows. Manganese oxide containing lithium is used for the positive electrode, and carbon powder that is an active material is used for the negative electrode. Using positive, negative and separator,
A wound electrode body is prepared and inserted into a cylindrical battery can. An electrolyte solution prepared by dissolving 1 mol / liter of lithium hexafluorophosphate (LiPF 6 ) in a mixed organic solvent of ethylene carbonate (EC), dimethyl carbonate (DMC) and diethyl carbonate (DEC) was injected into the battery can. ,
Seal with a sealing body that also serves as the positive electrode terminal.
【００１４】リチウム二次電池２は、その電池電圧を鉛
蓄電池１（３６Ｖ）に合わせる場合には、リチウムイオ
ン二次電池を１０個直列（３．６Ｖ×１０）に接続し、
充電電圧を鉛蓄電池１（４２Ｖ）に合わせる場合には、
リチウムイオン二次電池を１１個直列（３．６Ｖ×１
１）に接続したものとなるが、回生時の充電電圧に合わ
せる方が望ましい。When the battery voltage of the lithium secondary battery 2 is adjusted to that of the lead storage battery 1 (36 V), 10 lithium ion secondary batteries are connected in series (3.6 V × 10),
When adjusting the charging voltage to lead acid battery 1 (42V),
11 lithium-ion secondary batteries in series (3.6V x 1
It will be connected to 1), but it is preferable to match it to the charging voltage during regeneration.
【００１５】（作用・効果）本実施形態のハイブリッド
二次電池では、鉛蓄電池１とリチウム二次電池２とが並
列に接続されており、鉛蓄電池１の内部抵抗よりリチウ
ム二次電池２の内部抵抗が小さいので、充電時にリチウ
ム二次電池２に流れる電流値を鉛蓄電池１に流れる電流
値より大きくすることができる。従って、鉛蓄電池１の
充電率を小さくできるので、水の分解反応に伴う回生エ
ネルギーの損失を抑制して受け入れ性能を確保できる。
また、鉛蓄電池１の容量（９Ａｈ）をリチウム二次電池
２の容量（２Ａｈ）より大きくすることで、放電時に鉛
蓄電池１に流れる電流値をリチウム二次電池２に流れる
電流値より大きくすることができるので、リチウム二次
電池２の放電率を小さくすることができ、リチウム二次
電池２の放電率が小さい分、出力性能に優れたハイブリ
ッド二次電池とすることができる。従って、エンジン始
動性能に優れたハイブリッド二次電池を得ることができ
る。(Operation / Effect) In the hybrid secondary battery of the present embodiment, the lead storage battery 1 and the lithium secondary battery 2 are connected in parallel, and the internal resistance of the lead storage battery 1 causes the internal portion of the lithium secondary battery 2 to be different. Since the resistance is small, the current value flowing through the lithium secondary battery 2 during charging can be made larger than the current value flowing through the lead storage battery 1. Therefore, since the charge rate of the lead storage battery 1 can be reduced, the loss of regenerative energy due to the water decomposition reaction can be suppressed and the acceptance performance can be secured.
Further, by setting the capacity (9 Ah) of the lead storage battery 1 to be larger than the capacity (2 Ah) of the lithium secondary battery 2, the current value flowing in the lead storage battery 1 at the time of discharging is made larger than the current value flowing in the lithium secondary battery 2. Therefore, the discharge rate of the lithium secondary battery 2 can be reduced, and the discharge rate of the lithium secondary battery 2 is small, so that the hybrid secondary battery having excellent output performance can be obtained. Therefore, a hybrid secondary battery with excellent engine starting performance can be obtained.
【００１６】更に、鉛蓄電池１とリチウム二次電池２と
が並列に接続されているので、自動車の減速時や停止状
態からの加速時に、発電機からの大電流（４０〜８０
Ａ）を一旦リチウム二次電池２で受け入れ、受け入れた
電気エネルギーを、鉛蓄電池１に充電することもでき
る。Further, since the lead storage battery 1 and the lithium secondary battery 2 are connected in parallel, a large current (40 to 80) from the generator is generated when the vehicle is decelerated or accelerated from a stopped state.
It is also possible to temporarily receive A) in the lithium secondary battery 2 and charge the lead storage battery 1 with the received electric energy.
【００１７】[0017]
【実施例】次に、上述した本実施形態に従って作製した
実施例のハイブリッド二次電池について説明する。比較
のために作製した比較例の電池についても併記する。EXAMPLE Next, a hybrid secondary battery of an example manufactured according to the above-described embodiment will be described. The batteries of Comparative Examples prepared for comparison are also shown.
【００１８】（実施例１）下表１に示すように、実施例
１では、充電時にリチウムイオン二次電池を１１個直列
（３．６Ｖ×１１）に接続したリチウム二次電池２に流
れる電流値（Ｉｍ）が鉛蓄電池１に流れる電流値（Ｉ
ｐ）より大きく、放電時に鉛蓄電池１に流れる電流値
（Ｉｐ）がリチウム二次電池２に流れる電流値（Ｉｍ）
より大きい電池を作製した。(Example 1) As shown in Table 1 below, in Example 1, the current flowing through the lithium secondary battery 2 in which 11 lithium ion secondary batteries were connected in series (3.6 V × 11) during charging. The value (Im) is the current value (I
p), and the current value (Ip) flowing through the lead storage battery 1 during discharge is the current value (Im) flowing through the lithium secondary battery 2.
A larger battery was made.
【００１９】[0019]
【表１】 [Table 1]
【００２０】（比較例１）表１に示すように、比較例１
では、充放電時共にリチウム二次電池２に流れる電流値
（Ｉｍ）が鉛蓄電池１に流れる電流値（Ｉｐ）より大き
くなるように、リチウム二次電池２の容量を鉛蓄電池１
の容量より大きくした以外は実施例１と同様に電池を作
製した。Comparative Example 1 As shown in Table 1, Comparative Example 1
Then, the capacity of the lithium secondary battery 2 is set so that the current value (Im) flowing through the lithium secondary battery 2 during charging and discharging is larger than the current value (Ip) flowing through the lead storage battery 1.
A battery was made in the same manner as in Example 1 except that the capacity was made larger than the capacity.
【００２１】＜試験・評価＞次に、上述した実施形態に
従って作製したハイブリッド二次電池を用いて、所定充
放電率（Ｃ）で充放電後、５秒目の電池電圧（５秒目電
池電圧）を測定する充放電試験を行った。なお、通常自
動車用などのハイブリッド二次電池の充放電時に求めら
れる電流値は、２．５ＣＡ〜８．５ＣＡ程度である。<Test / Evaluation> Next, using the hybrid secondary battery manufactured according to the above-described embodiment, after charging / discharging at a predetermined charge / discharge rate (C), the battery voltage at 5 seconds (5 second battery voltage ) Was measured. The current value required for charging and discharging the hybrid secondary battery for automobiles is usually about 2.5 CA to 8.5 CA.
【００２２】図２及び図３に、充放電試験の試験結果を
示す。図２に示すように、比較例１の電池では、充電率
が２Ｃを超えると、電池電圧が水溶液系二次電池から水
素発生が起こる４３Ｖ以上となり、充電が不可能となっ
た。一方、実施例１の電池では、充電率５Ｃにおいても
電池電圧が４３Ｖ以下であり、回生エネルギーを効率よ
く得ることができた。2 and 3 show the test results of the charge / discharge test. As shown in FIG. 2, in the battery of Comparative Example 1, when the charging rate exceeded 2C, the battery voltage became 43 V or higher at which hydrogen was generated from the aqueous secondary battery, and charging was impossible. On the other hand, in the battery of Example 1, the battery voltage was 43 V or less even at the charging rate of 5 C, and the regenerative energy could be efficiently obtained.
【００２３】また、図３に示すように、比較例１の電池
では、放電率が６Ｃを越えると、１４Ｖシステムで求め
られているＪＩＳ規格の６Ｖに対応する４２Ｖシステム
の１８Ｖを確保できなかった。一方、実施例１の電池で
は、１０Ｃにおいても１８Ｖの電圧を確保できており、
エンジン始動性能を確保することができた。Further, as shown in FIG. 3, in the battery of Comparative Example 1, when the discharge rate exceeded 6C, 18V of 42V system corresponding to 6V of JIS standard required for 14V system could not be secured. . On the other hand, in the battery of Example 1, a voltage of 18V can be secured even at 10C,
The engine starting performance was secured.
【００２４】以上のように、充電時にリチウム二次電池
２に流れる電流値（Ｉｍ）が鉛蓄電池１に流れる電流値
（Ｉｐ）より大きく、放電時に鉛蓄電池１に流れる電流
値（Ｉｐ）がリチウム二次電池２に流れる電流値（Ｉ
ｍ）より大きい電池は、受け入れ性能が確保されると共
に、出力性能に優れた電池であることが分かった。As described above, the current value (Im) flowing through the lithium secondary battery 2 during charging is larger than the current value (Ip) flowing through the lead storage battery 1, and the current value (Ip) flowing through the lead storage battery 1 during discharging is lithium. Current value flowing in the secondary battery 2 (I
It has been found that a battery larger than m) is a battery having excellent output performance while ensuring the receiving performance.
【００２５】なお、本実施形態では、鉛蓄電池１の容量
を９Ａｈ、リチウム二次電池２の容量を２Ａｈとした例
を示したが、これに限定されるものではなく、鉛蓄電池
１の容量はリチウムイオン二次電池の容量より大きけれ
ばよく、例えば３倍以上であることが好ましい。このよ
うに容量を設定することで、今後、３６Ｖ系電池で作動
する機器の負荷に対応することが可能となる。In the present embodiment, the lead storage battery 1 has a capacity of 9 Ah and the lithium secondary battery 2 has a capacity of 2 Ah. However, the capacity of the lead storage battery 1 is not limited to this. It is sufficient that the capacity is larger than that of the lithium ion secondary battery, and for example, it is preferably 3 times or more. By setting the capacity in this way, it becomes possible to cope with the load of equipment that operates on a 36V system battery in the future.
【００２６】また、本実施形態では、水溶液系二次電池
として３６Ｖ系密閉型鉛蓄電池１、非水系二次電池とし
て３６Ｖ系リチウム二次電池２を例示したが、本発明は
これに限定されるものではない。従って、開放型の鉛蓄
電池やニッケル−水素電池等を用いる場合にも本発明の
適用は可能である。Further, in the present embodiment, the 36V type sealed lead acid battery 1 and the 36V type lithium secondary battery 2 are exemplified as the aqueous solution type secondary battery and the non-aqueous type secondary battery, but the present invention is not limited thereto. Not a thing. Therefore, the present invention can be applied even when an open type lead storage battery, a nickel-hydrogen battery or the like is used.
【００２７】[0027]
【発明の効果】以上説明したように、本発明によれば、
水溶液系二次電池と非水系二次電池とが並列に接続され
ており、水溶液系二次電池の抵抗より非水系二次電池の
抵抗が小さいので、充電時に非水系二次電池に流れる電
流値を水溶液系二次電池に流れる電流値より大きくでき
ると共に、水溶液系二次電池の容量を非水系二次電池の
容量より大きくすることで、放電時に水溶液系二次電池
に流れる電流値を非水系二次電池に流れる電流値より大
きくすることができるので、受け入れ性能を確保できる
と共に、出力性能に優れたハイブリッド二次電池とする
ことができる、という効果を得ることができる。As described above, according to the present invention,
Since the resistance of the non-aqueous secondary battery is smaller than the resistance of the aqueous secondary battery because the aqueous secondary battery and the non-aqueous secondary battery are connected in parallel, the current value flowing through the non-aqueous secondary battery during charging. Can be made larger than the current value flowing in the aqueous solution type secondary battery, and the capacity of the aqueous solution type secondary battery is made larger than the capacity of the non-aqueous type secondary battery, so that the current value flowing in the aqueous solution type secondary battery at the time of discharge is Since the current value flowing through the secondary battery can be made larger, it is possible to obtain an effect that a receiving performance can be secured and a hybrid secondary battery having excellent output performance can be obtained.
【図１】本発明が適用可能な実施形態のハイブリッド二
次電池の概略を示すブロック図である。FIG. 1 is a block diagram schematically showing a hybrid secondary battery of an embodiment to which the present invention can be applied.
【図２】実施例１及び比較例１の各電池の５秒目電池電
圧と充電率との関係を示すグラフである。FIG. 2 is a graph showing the relationship between the battery voltage at 5 seconds and the charging rate of each battery of Example 1 and Comparative Example 1.
【図３】実施例１及び比較例１の各電池の５秒目電池電
圧と放電率との関係を示すグラフである。FIG. 3 is a graph showing the relationship between the battery voltage at 5 seconds and the discharge rate of each battery of Example 1 and Comparative Example 1.
１ 鉛蓄電池（水溶液系二次電池） ２ リチウム二次電池（非水系二次電池） 1 Lead-acid battery (aqueous secondary battery) 2 Lithium secondary battery (non-aqueous secondary battery)
Claims (5)
並列に接続したハイブリッド二次電池において、充電時
に前記非水系二次電池に流れる電流値が前記水溶液系二
次電池に流れる電流値より大きく、放電時に前記水溶液
系二次電池に流れる電流値が前記非水系二次電池に流れ
る電流値より大きいことを特徴とするハイブリッド二次
電池。1. In a hybrid secondary battery in which an aqueous solution type secondary battery and a non-aqueous type secondary battery are connected in parallel, a current value flowing through the non-aqueous type secondary battery during charging is a current flowing through the aqueous solution type secondary battery. A hybrid secondary battery, which is larger than a current value and a current value flowing through the aqueous solution-type secondary battery during discharge is larger than a current value flowing through the non-aqueous-system secondary battery.
成されていることを特徴とする請求項１に記載のハイブ
リッド二次電池。2. The hybrid secondary battery according to claim 1, wherein the aqueous secondary battery is a lead storage battery.
した３６Ｖ系鉛蓄電池であることを特徴とする請求項２
に記載のハイブリッド二次電池。3. The lead storage battery is a 36V lead storage battery in which 18 cells are connected in series.
The hybrid secondary battery according to.
池で構成されていることを特徴とする請求項１に記載の
ハイブリッド二次電池。4. The hybrid secondary battery according to claim 1, wherein the non-aqueous secondary battery is a lithium secondary battery.
セルを直列に接続した３６Ｖ系リチウムイオン二次電池
であることを特徴とする請求項４に記載のハイブリッド
二次電池。5. The lithium secondary battery is 10 or 11
The hybrid secondary battery according to claim 4, wherein the hybrid secondary battery is a 36V lithium-ion secondary battery in which cells are connected in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001372350A JP2003174734A (en) | 2001-12-06 | 2001-12-06 | Hybrid secondary battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001372350A JP2003174734A (en) | 2001-12-06 | 2001-12-06 | Hybrid secondary battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003174734A true JP2003174734A (en) | 2003-06-20 |
Family
ID=19181261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001372350A Abandoned JP2003174734A (en) | 2001-12-06 | 2001-12-06 | Hybrid secondary battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003174734A (en) |
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