JPH04151581A - Combined battery - Google Patents
Combined batteryInfo
- Publication number
- JPH04151581A JPH04151581A JP2276990A JP27699090A JPH04151581A JP H04151581 A JPH04151581 A JP H04151581A JP 2276990 A JP2276990 A JP 2276990A JP 27699090 A JP27699090 A JP 27699090A JP H04151581 A JPH04151581 A JP H04151581A
- Authority
- JP
- Japan
- Prior art keywords
- battery
- discharge
- discharging
- discharge capacity
- diode
- 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
- 238000007599 discharging Methods 0.000 abstract description 16
- 230000003247 decreasing effect Effects 0.000 abstract 2
- 208000028659 discharge Diseases 0.000 description 122
- 238000010586 diagram Methods 0.000 description 10
- SOZVEOGRIFZGRO-UHFFFAOYSA-N [Li].ClS(Cl)=O Chemical compound [Li].ClS(Cl)=O SOZVEOGRIFZGRO-UHFFFAOYSA-N 0.000 description 6
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 5
- 229910052744 lithium Inorganic materials 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 229910000733 Li alloy Inorganic materials 0.000 description 1
- FBDMJGHBCPNRGF-UHFFFAOYSA-M [OH-].[Li+].[O-2].[Mn+2] Chemical compound [OH-].[Li+].[O-2].[Mn+2] FBDMJGHBCPNRGF-UHFFFAOYSA-M 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000001989 lithium alloy Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Landscapes
- Tests Of Electric Status Of Batteries (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】 〔産業上の利用分野］ 本発明は二段放電が可能な組電池に関する。[Detailed description of the invention] [Industrial application field] The present invention relates to an assembled battery capable of two-stage discharge.
一次電池、特にその中でもリチウムまたはリチウム合金
を負極に用い、その量で電池の放電容量を規制するリチ
ウム電池は、放電末期まで内部抵抗に変化が認められな
いので、電池の作動電圧は放電末期まで平坦性が維持さ
れる。Primary batteries, especially lithium batteries that use lithium or lithium alloy as the negative electrode and regulate the battery's discharge capacity by the amount, do not show any change in internal resistance until the end of discharge, so the operating voltage of the battery remains constant until the end of discharge. Flatness is maintained.
たとえば、リチウム規制のリチウム塩化チオニル電池を
２０℃、３にΩで放電させたときの放電特性は第７図に
示す通りであり、リチウムがなくなるまでは平坦な放電
が続き、リチウムがなくなった時点で放電電圧が急激に
低下し、電池の寿命が終わる（たとえば、米国特許第４
，２９３，６２２号明細書）。For example, when a lithium-regulated lithium-thionyl chloride battery is discharged at 20°C and 3Ω, the discharge characteristics are as shown in Figure 7. Flat discharge continues until the lithium runs out, and at the point when the lithium runs out, the discharge characteristics are as shown in Figure 7. The discharge voltage drops rapidly and the battery life ends (for example, as described in U.S. Patent No. 4
, 293, 622).
そのため、この電池では、その寿命が終わる前に放電末
期を知ることができず、その結果、適切な時期に電池交
換をすることがむつかしい。Therefore, with this battery, it is not possible to know the end of discharge before the end of its life, and as a result, it is difficult to replace the battery at an appropriate time.
したがって、本発明は、そのような問題点を解決し、電
池の寿命が終わる前に放電末期を検知することができ、
適切な時期での電池交換を可能にすることを目的とする
。Therefore, the present invention solves such problems and can detect the end of discharge before the battery life ends.
The purpose is to enable battery replacement at an appropriate time.
本発明は、放電容量の異なる２個の電池を並列に接続し
てＭｌを池にし、放電容量の小さい側の電池にダイオー
ドを直列に接続することによって、二段放電を可能にし
、上記目的を達成したものである。The present invention enables two-stage discharge by connecting two batteries with different discharge capacities in parallel to form a pond, and connecting a diode in series to the battery with the smaller discharge capacity, thereby achieving the above object. This has been achieved.
組み合わせる電池は、放電容量が異なっておりさえすれ
ば、同一電池系のものでもよいし、また、異種電池系の
ものでもよい。The batteries to be combined may be of the same battery type, or may be of different types of batteries, as long as they have different discharge capacities.
上記の組電池では、放電容量が異なる２個の電池を並列
に接続し、放電容量の小さい側の電池にダイオードを直
列に接続しているので、この組電池を放電させると、ま
ず、放電容量の大きい側の電池が放電し、その放電容量
の大きい側の電池の放電が終了して電圧が降下しはしめ
、ダイオードの順方向電圧降下に相当するぶん電圧が降
下したときに、放電容量の小さい側の電池の放電が始ま
り、二段放電が生じる。In the above battery pack, two batteries with different discharge capacities are connected in parallel, and a diode is connected in series to the battery with the smaller discharge capacity, so when this battery pack is discharged, the discharge capacity When the battery with the larger discharge capacity discharges and the battery with the larger discharge capacity finishes discharging and the voltage drops, and the voltage drops by an amount equivalent to the forward voltage drop of the diode, the battery with the smaller discharge capacity The battery on the other side begins to discharge, resulting in a two-stage discharge.
したがって、組電池全体としての寿命が終わる前に放電
容量の大きい側の電池の放電末期を検知することができ
、適切な時期での電池交換が可能になる。Therefore, the end of discharge of the battery with the larger discharge capacity can be detected before the life of the battery pack as a whole ends, and the battery can be replaced at an appropriate time.
つぎに本発明の実施例を図面に基づいて説明する。 Next, embodiments of the present invention will be described based on the drawings.
実施例１ 第１図は本発明の実施例１の組電池の回路図である。Example 1 FIG. 1 is a circuit diagram of a battery pack according to a first embodiment of the present invention.
第１図において、（１）は第１放電電圧を与える放電容
量の大きい側の電池であり、（２）は第２放電電圧を与
える放電容量の小さい側の電池である。これらの電池（
１）と電池（２）とは並列に接続されている。In FIG. 1, (1) is a battery with a larger discharge capacity that provides a first discharge voltage, and (2) is a battery with a smaller discharge capacity that provides a second discharge voltage. These batteries (
1) and battery (2) are connected in parallel.
（３）はダイオードであり、（４）はダイオード保護用
の抵抗である。この抵抗（４）は、使用されるダイオー
ド（３）の順方向最大許容電流で放電容量の小さい側の
電池（２）の電圧を割ったときの商以上の値を持つもの
が用いられる。ただし、抵抗（４）はダイオード（３）
と放電容量の小さい側の電池（２）を含む直列回路に短
絡のおそれがない場合は必ずしも必要ではない。(3) is a diode, and (4) is a resistor for protecting the diode. This resistor (4) has a value greater than or equal to the quotient of the voltage of the battery (2) with the smaller discharge capacity divided by the maximum allowable forward current of the diode (3) used. However, the resistor (4) is a diode (3)
This is not necessarily necessary if there is no risk of short circuit in the series circuit including the battery (2) with the smaller discharge capacity.
この組電池では、電池（１）と電池（２）とが並列に接
続され、電池（２）とダイオード（３）とが直列に接続
されているので、この組電池を放電させると、最初は放
電容量の大きい側の電池（１）が放電する。電池（１）
の放電は平坦な放電電圧で進行し、それが電池（１）の
放電容量がなくなるまで続く、そして、電池（１）の放
電が終了した時点で電圧が降下しはじめ、ダイオード（
３）の順方向電圧降下に相当するぶん電圧が降下すると
、放電容量の小さい側の電池（２）が放電しはじめ、二
段放電になる。In this assembled battery, battery (1) and battery (2) are connected in parallel, and battery (2) and diode (3) are connected in series, so when this assembled battery is discharged, initially The battery (1) with the larger discharge capacity discharges. Battery (1)
The discharge proceeds at a flat discharge voltage, which continues until the discharge capacity of the battery (1) is exhausted, and when the discharge of the battery (1) is finished, the voltage begins to drop and the diode (
When the voltage drops by an amount corresponding to the forward voltage drop in 3), the battery (2) with the smaller discharge capacity begins to discharge, resulting in a two-stage discharge.
この実施例１の組電池において、放電容量の大きい側の
電池（１）としてＡＡ形（単３形）のリチウム−塩化チ
オニル電池（放電容量１，９００ｍＡ ｈ ）を用い、
放電容量の小さい側の電池（２）として同一電池系で１
／Ｚ ＡＡ形のリチウム−塩化チオニル電池（放電容
量８５０ｍ Ａ ｈ ）を用い、ダイオード（３）とし
て１５９５３を用い、抵抗（４）として抵抗値３０Ωの
ものを用い、２０℃、３にΩで放電させたときの放電特
性を第２図に示す。In the assembled battery of Example 1, an AA type (AA type) lithium-thionyl chloride battery (discharge capacity 1,900 mAh) was used as the battery (1) on the larger discharge capacity side,
1 in the same battery system as the battery (2) with smaller discharge capacity
/Z Using a AA type lithium-thionyl chloride battery (discharge capacity 850 mA h), using 15953 as the diode (3) and using a resistance value of 30 Ω as the resistor (4), discharge at 20°C at 3 Ω. Figure 2 shows the discharge characteristics when
第２図に示すように、この組電池では、約３．６Ｖでの
平坦な放電の後、３．Ｏｖ付近に二段目の放電が現れる
。As shown in FIG. 2, after a flat discharge at about 3.6V, this battery pack has a 3. A second stage of discharge appears near Ov.
第２図における約３．６ｖでの平坦な放電は放電容量の
大きい側の電池（１１に基づくものであり、二段目の放
電は放電容量の小さい側の電池（２）によるものである
。The flat discharge at about 3.6 V in FIG. 2 is based on the battery (11) with the higher discharge capacity, and the second stage discharge is due to the battery (2) with the lower discharge capacity.
この組電池では、上記のように二段放電が生じるので、
この電圧変化によって、組電池全体としての寿命が終わ
る前に放電容量の大きい側の電池（１）の放電末期を検
知することができ、適切な時期での電池交換が可能にな
る。In this assembled battery, two-stage discharge occurs as described above, so
Due to this voltage change, it is possible to detect the end of discharge of the battery (1) with the larger discharge capacity before the life of the battery pack as a whole ends, and it becomes possible to replace the battery at an appropriate time.
実施例２ 実施例２の組電池の回路図を第３図に示す。Example 2 A circuit diagram of the assembled battery of Example 2 is shown in FIG.
第３図において、（１）は放電容量の大きい側の電池で
、（２）は放電容量の小さい側の電池である。そして、
電池（１）と電池（２）とは並列に接続されている。In FIG. 3, (1) is a battery with a larger discharge capacity, and (2) is a battery with a smaller discharge capacity. and,
Battery (1) and battery (2) are connected in parallel.
（３）はダイオードであり、この実施例２の組電池では
２個のダイオード（３）が使用されており、これらダイ
オード（３）は２個とも放電容量の小さい側の電池（２
）に直列に接続されている。（４）は抵抗である。(3) is a diode, and two diodes (3) are used in the assembled battery of Example 2, and both of these diodes (3) are connected to the battery (2) with a smaller discharge capacity.
) are connected in series. (4) is resistance.
この組電池を放電させると、実施例１の組電池と同様に
、最初は放電容量の大きい側の電池（１）が放電し、平
坦な放電電圧での放電が電池（１）の放電容量がなくな
るまで続く、そして、電池（１）の放電が終了した時点
で電圧が降下しはじめ、２個のダイオード（３）の順方
向電圧降下に相当するぶん電圧が降下したときに、放電
容量の小さい側の電池（２）が放電しはじめ、二段放電
になる。When this assembled battery is discharged, like the assembled battery of Example 1, the battery (1) with the larger discharge capacity discharges first, and discharge at a flat discharge voltage causes the discharge capacity of the battery (1) to increase. The voltage continues until the battery (1) has finished discharging, and when the voltage drops by an amount equivalent to the forward voltage drop of the two diodes (3), the discharge capacity is small. The battery on the side (2) begins to discharge, resulting in a two-stage discharge.
この実施例２の組電池において、放電容量の大きい側の
電池（１）としてＡＡ形のリチウム−塩化チオニル電池
（放電容量１，９００ｍ Ａ ｈ ）を用い、放電容量
の小さい側の電池（２）として１／２ＡＡ形のりチウム
−塩化チオニル電池（放電容量８５０ｍＡｈ）を用い、
ダイオード（３）には２個ともｌ５９５３を用い、抵抗
（４）として抵抗値３０Ωのものを用い、２０℃、３に
Ωで放電させたときの放電特性を第４図に示す。In the assembled battery of Example 2, an AA type lithium-thionyl chloride battery (discharge capacity 1,900 mA h) was used as the battery (1) with the larger discharge capacity, and the battery (2) with the smaller discharge capacity was used. Using a 1/2 AA type lithium-thionyl chloride battery (discharge capacity 850mAh),
Both diodes (3) were made of 15953, and the resistor (4) had a resistance value of 30Ω, and the discharge characteristics when discharged at 3Ω at 20° C. are shown in FIG.
第４図に示すように、この組電池では、約３．６Ｖでの
平坦な放電の後、２．４Ｖ付近に二段目の放電が現れる
。As shown in FIG. 4, in this assembled battery, after a flat discharge at about 3.6V, a second stage of discharge appears at around 2.4V.
第４図における約３．６ｖでの平坦な放電は放電容量の
大きい側の電池（１）に基づくものであり、二段目の放
電は放電容量の小さい側の電池（２）によるものである
。The flat discharge at approximately 3.6V in Figure 4 is based on the battery (1) with the larger discharge capacity, and the second stage discharge is due to the battery (2) with the smaller discharge capacity. .
この組電池では、上記のように二段放電が生じるので、
この電圧変化によって、組電池全体としての寿命が終わ
る前に放電容量の大きい側の電池（１）の放電末期を検
知することができ、適切な時期での電池交換が可能にな
る。In this assembled battery, two-stage discharge occurs as described above, so
Due to this voltage change, it is possible to detect the end of discharge of the battery (1) with the larger discharge capacity before the life of the battery pack as a whole ends, and it becomes possible to replace the battery at an appropriate time.
特に、この実施例２の組電池では、ダイオード（３）を
２個用い、放電容量の小さい側の電池（２）に直列に接
続しているので、電池（２）と放電容量の大きい側の電
池（１）との放電電圧の差が、実施例１の場合の２倍に
なるので、二段放電がより明確に現れる。In particular, in the assembled battery of Example 2, two diodes (3) are used and are connected in series to the battery (2) with the smaller discharge capacity, so that the battery (2) and the battery (2) with the larger discharge capacity Since the difference in discharge voltage with battery (1) is twice that of Example 1, two-stage discharge appears more clearly.
実施例３ 実施例３の組電池の回路図を第５図に示す。Example 3 A circuit diagram of the assembled battery of Example 3 is shown in FIG.
第５図において、（１）は放電容量の大きい側の電池で
、（２）は放電容量の小さい側の電池であり、（３）は
ダイオードで、（４）は抵抗である。In FIG. 5, (1) is a battery with a larger discharge capacity, (2) is a battery with a smaller discharge capacity, (3) is a diode, and (4) is a resistor.
電池（１）と電池（２）とは並列に接続され、放電容量
の小さい側の電池（２）にダイオード（３）が直列に接
続されているが、この組電池には、さらに、電池（１）
と同じ放電容量を持つ電池（５）が電池（２）に並列に
接続されている。Battery (1) and battery (2) are connected in parallel, and a diode (3) is connected in series to battery (2) with a smaller discharge capacity. 1)
A battery (5) having the same discharge capacity as is connected in parallel to battery (2).
この組電池を放電すると、まず、電池（１）と電池（５
）とが平坦な放電電圧で放電し、電池（１）と電池（５
）との放電容量がなくなるまで平坦な放電が続く。When this assembled battery is discharged, first battery (1) and battery (5) are discharged.
) are discharged at a flat discharge voltage, and battery (1) and battery (5
) until the discharge capacity is exhausted.
そして、電池（１）と電池（５）の放電が終了した時点
で電圧が降下しはじめ、ダイオード（３）の順方向電圧
降下に相当するぶん電圧が降下したときに、放電容量の
小さい側の電池（２）が放電しはじめ、二段放電になる
。Then, when the battery (1) and battery (5) have finished discharging, the voltage begins to drop, and when the voltage drops by an amount equivalent to the forward voltage drop of the diode (3), the side with the smaller discharge capacity Battery (2) begins to discharge, resulting in a two-stage discharge.
この組電池において、放電容量の大きい側の電池（１）
および電池（５）としてＡＡ形のリチウム−塩化チオニ
ル電池（放電容量１，９００ｍＡ ｈ ）を用い、放電
容量の小さい側の電池（２）として電池（１）とは異種
電池系のリチウムー二酸化マンガン電池（放電容量２０
０ｍ Ａ ｈ ）を用い、ダイオード（３）として１Ｓ
９５３を用い、抵抗（４）として抵抗値３０Ωのものを
用い、２０℃、３にΩで放電させたときの放電特性を第
６図に示す。In this battery pack, the battery with larger discharge capacity (1)
A AA-type lithium-thionyl chloride battery (discharge capacity 1,900 mAh) was used as battery (5), and a lithium-manganese dioxide battery of a different type from battery (1) was used as battery (2) with a smaller discharge capacity. (discharge capacity 20
0m A h ) and 1S as diode (3).
FIG. 6 shows the discharge characteristics when a resistor (4) of 953 with a resistance value of 30 Ω was used and discharged at 20° C. with a resistance of 3 Ω.
第６図に示すように、この組電池では、約３．６■での
平坦な放電の後、２．３Ｖ付近に二段目の放電が現れる
。As shown in FIG. 6, in this assembled battery, after a flat discharge at about 3.6V, a second stage of discharge appears at around 2.3V.
第６図における約３．６Ｖでの平坦な放電は放電容量の
大きい側の電池（１）と電池（５）とに基づくものであ
り、二段目の放電は放電容量の小さい側の電池（２）に
よるものである。The flat discharge at about 3.6V in Figure 6 is based on batteries (1) and (5) with larger discharge capacity, and the second stage discharge is based on battery (1) with smaller discharge capacity ( 2).
この組電池では、上記のように二段放電が生じるので、
この電圧変化によって、組電池全体としての寿命が終わ
る前に放電容量の大きい側の電池（１）と電池（５）の
放電末期を検知することができ、適切な時期での電池交
換が可能になる。In this assembled battery, two-stage discharge occurs as described above, so
This voltage change makes it possible to detect the end of discharge for batteries (1) and (5), which have larger discharge capacities, before the end of the battery life as a whole, making it possible to replace the batteries at an appropriate time. Become.
以上説明したように、本発明では、放電容量の異なる２
個の電池を並列に接続し、放電容量の小さい側の電池に
ダイオードを直列に接続することによって、ダイオード
の有する順方向電圧降下特性を利用して、二段放電を発
生させ、組電池全体としての寿命が終わる前に放電容量
の大きい側の電池の放電末期を検知することができるよ
うになり、適切な時期での電池交換が可能になった。As explained above, in the present invention, two
By connecting two batteries in parallel and connecting a diode in series to the battery with the smaller discharge capacity, a two-stage discharge is generated by utilizing the diode's forward voltage drop characteristics, and the entire assembled battery It is now possible to detect the end of discharge of a battery with a larger discharge capacity before the end of its lifespan, making it possible to replace the battery at an appropriate time.
第１図は本発明の実施例１の組電池の回路図であり、第
２図は実施例１の組電池の放電特性を示す図である。第
３図は本発明の実施例２の組電池の回路図であり、第４
図は実施例２の組電池の放電特性を示す図である。第５
図は本発明の実施例３の組電池の回路図であり、第６図
は実施例３の組電池の放電特性を示す図である。第７図
は従来電池の放電特性を示す図である。
（１）・・・放電容量の大きい側の電池、（２）・・・
放電容量の小さい側の電池、（３）・・・ダイオ−ト
ド・・放電容量の大きい側の電池
２・・・放電容量の小さい側の電池
３・・・ダイオード
結２図
才（
を時
開
（ｈ）
ｌ・・・放電容量の大きい側の電池
２・・・放電容量の小さい側の電池
３・・・ダイオード
第
４図
１欠
上
胃し
晴
聞
（ｈ）
■・・・放電容量の大きい側の電池
２・・・放電容量の小さい側の電池
３・・・ダイオード
３α℃
方（
電
時
開
（ｈ）
入電時間
（ｈ）
１丁目１番羽号
日立マクセル株式会社FIG. 1 is a circuit diagram of a battery pack according to Example 1 of the present invention, and FIG. 2 is a diagram showing the discharge characteristics of the battery pack according to Example 1. FIG. 3 is a circuit diagram of the assembled battery according to the second embodiment of the present invention;
The figure is a diagram showing the discharge characteristics of the assembled battery of Example 2. Fifth
The figure is a circuit diagram of a battery pack according to Example 3 of the present invention, and FIG. 6 is a diagram showing the discharge characteristics of the battery pack according to Example 3. FIG. 7 is a diagram showing the discharge characteristics of a conventional battery. (1)...battery with larger discharge capacity, (2)...
Battery with smaller discharge capacity (3)...Diode...Battery with larger discharge capacity 2...Battery with smaller discharge capacity 3...Diode connection (open when open) (h) l...Battery 2 on the side with larger discharge capacity...Battery 3 on the side with smaller discharge capacity...Diode Battery 2 on the larger side...Battery 3 on the side with smaller discharge capacity...Diode 3α℃ side (Electrical open time (h) Power on time (h) 1-chome No. 1 Hitachi Maxell, Ltd.
Claims (1)
容量の小さい側の電池にダイオードを直列に接続したこ
とを特徴とする二段放電が可能な組電池。1. An assembled battery capable of two-stage discharge, characterized in that two batteries with different discharge capacities are connected in parallel, and a diode is connected in series to the battery with the smaller discharge capacity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2276990A JPH04151581A (en) | 1990-10-15 | 1990-10-15 | Combined battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2276990A JPH04151581A (en) | 1990-10-15 | 1990-10-15 | Combined battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04151581A true JPH04151581A (en) | 1992-05-25 |
Family
ID=17577233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2276990A Pending JPH04151581A (en) | 1990-10-15 | 1990-10-15 | Combined battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04151581A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008260346A (en) * | 2007-04-10 | 2008-10-30 | Nissan Motor Co Ltd | Power source system for hybrid electric vehicle, and its control device |
| JP2012085368A (en) * | 2010-10-06 | 2012-04-26 | Yokogawa Electric Corp | Power circuit |
-
1990
- 1990-10-15 JP JP2276990A patent/JPH04151581A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008260346A (en) * | 2007-04-10 | 2008-10-30 | Nissan Motor Co Ltd | Power source system for hybrid electric vehicle, and its control device |
| JP2012085368A (en) * | 2010-10-06 | 2012-04-26 | Yokogawa Electric Corp | Power circuit |
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