JP2002056900A - Nonaqueous electrolyte type battery device and battery pack - Google Patents
Nonaqueous electrolyte type battery device and battery packInfo
- Publication number
- JP2002056900A JP2002056900A JP2000245611A JP2000245611A JP2002056900A JP 2002056900 A JP2002056900 A JP 2002056900A JP 2000245611 A JP2000245611 A JP 2000245611A JP 2000245611 A JP2000245611 A JP 2000245611A JP 2002056900 A JP2002056900 A JP 2002056900A
- Authority
- JP
- Japan
- Prior art keywords
- secondary battery
- voltage
- main body
- temperature
- battery main
- 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
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
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は非水電解液型の二次
電池本体を備えた電池装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery device having a non-aqueous electrolyte type secondary battery body.
【０００２】[0002]
【従来の技術及び発明が解決しようとする課題】二次電
池を充電する際には、電池電圧が過剰に高くならないよ
うに制御される。しかし、非水電解液を使用した電池、
例えばリチウムイオン電池では、充電電圧を制御するだ
けでは、充電後に二次電池本体内の圧力が異常に上昇す
ることがあるという問題が指摘されてきた。2. Description of the Related Art When charging a secondary battery, control is performed so that the battery voltage does not become excessively high. However, batteries using non-aqueous electrolytes,
For example, in lithium ion batteries, it has been pointed out that the pressure in the secondary battery main body may abnormally increase after charging simply by controlling the charging voltage.
【０００３】その原因は、リチウムイオン電池を４．１
Ｖ以上の充電状態として高温雰囲気に放置すると、正極
表面で電解液が分解反応を起こし、それによってガスが
発生するためであることが究明されている。このような
条件は、例えばリチウムイオン電池を電源とした携帯電
話を、充電状態のまま夏の車中に放置することにより成
立することがある。近年のリチウムイオン電池は、高電
圧充電化が進み、しかも二次電池本体は耐圧が低いアル
ミニウムケースやアルミニウムラミネートフィルムを使
用しているものがあるから、内圧上昇によって二次電池
本体が膨らみ、最悪の場合には破裂や漏液に至るおそれ
もある。そこで、本発明は、過剰な内圧上昇を防止でき
る非水電解液型電池装置を提供することを目的とする。[0003] The cause is that the lithium-ion battery is used in 4.1.
It has been determined that when the battery is left in a high-temperature atmosphere with a charged state of V or more, a decomposition reaction of the electrolyte occurs on the surface of the positive electrode, thereby generating gas. Such a condition may be satisfied when, for example, a mobile phone powered by a lithium ion battery is left in a car in a summer while being charged. In recent years, lithium-ion batteries have been increasingly charged at high voltage, and some secondary batteries use aluminum cases or aluminum laminate films with low withstand voltage. In such a case, there is a risk of rupture or liquid leakage. Therefore, an object of the present invention is to provide a non-aqueous electrolyte battery device that can prevent an excessive increase in internal pressure.
【０００４】[0004]
【課題を解決するための手段及び作用】本発明者らは、
非水電解液を使用した二次電池本体の圧力上昇が、電解
液の種類及び正負極の種類に応じた所定の電圧、例えば
リチウムイオン電池においては４．１Ｖ以上の電圧以上
で充電した場合に正極表面での電解液の分解反応による
ガスの発生によるものであるという事実を見いだした。
本発明はこのような知見に基づいてなされたものであ
る。すなわち、請求項１の発明に係る電池装置は、非水
電解液型の二次電池本体を備えて構成された電池装置に
おいて、前記二次電池本体の電圧を検出する電圧検出手
段を設け、この電圧検出手段により充電時における前記
二次電池本体の電圧が第１の所定電圧に上昇したことを
検出したときには、充電を停止するとともに前記二次電
池を前記第１の所定電圧電圧以下の第２の所定電圧に放
電させることを特徴とする。従って、本発明によれば、
充電時において電圧検出手段により非水電解液型二次電
池本体の電圧が第１の所定電圧に上昇したことを検出し
たときには、二次電池本体をそれより低い第２の所定電
圧に放電させることにより、電解液の分解反応を抑える
ことができる。Means and Action for Solving the Problems The present inventors have
When the pressure rise of the secondary battery main body using the non-aqueous electrolyte is charged at a predetermined voltage according to the type of the electrolyte and the type of the positive and negative electrodes, for example, at a voltage of 4.1 V or more in a lithium ion battery, It has been found that this is due to the generation of gas due to the decomposition reaction of the electrolyte solution on the positive electrode surface.
The present invention has been made based on such findings. That is, in the battery device according to the first aspect of the present invention, in a battery device including a nonaqueous electrolyte type secondary battery main body, a voltage detecting means for detecting a voltage of the secondary battery main body is provided. When the voltage detecting means detects that the voltage of the secondary battery main body at the time of charging has risen to a first predetermined voltage, the charging is stopped and the secondary battery is set to a second voltage lower than the first predetermined voltage voltage. Discharge to a predetermined voltage. Thus, according to the present invention,
When detecting that the voltage of the non-aqueous electrolyte secondary battery body has risen to the first predetermined voltage by the voltage detecting means during charging, discharging the secondary battery body to a second predetermined voltage lower than the first predetermined voltage. Thereby, the decomposition reaction of the electrolytic solution can be suppressed.
【０００５】電池電圧が所定電圧以上であっても電池温
度が低い場合、例えば、リチウムイオン二次電池におい
ては、６０℃未満では、電解液の分解反応は起こらない
という事実を見いだしたため、請求項２の発明に係る電
池装置は、非水電解液型の二次電池本体を備えて構成さ
れた電池装置において、前記二次電池本体の電圧を検出
する電圧検出手段と、前記二次電池本体の温度を検出す
る温度検出手段とを設け、前記電圧検出手段により充電
時における前記二次電池本体の電圧が第１の所定電圧に
上昇したことを検出したときであって、かつ、前記温度
検出手段により前記二次電池本体の温度が所定温度以上
に上昇したことを検出したときには、充電を停止すると
ともに前記二次電池本体を前記第１の所定電圧以下の第
２の所定電圧に放電させることを特徴とする。[0005] The inventors have found that when the battery temperature is low even when the battery voltage is higher than a predetermined voltage, for example, in a lithium ion secondary battery, the decomposition reaction of the electrolyte does not occur below 60 ° C. A battery device according to a second aspect of the present invention is a battery device including a non-aqueous electrolyte type secondary battery main body, wherein a voltage detecting means for detecting a voltage of the secondary battery main body; Temperature detecting means for detecting a temperature, when the voltage detecting means detects that the voltage of the secondary battery body during charging has risen to a first predetermined voltage, and wherein the temperature detecting means When it is detected that the temperature of the secondary battery body has risen to a predetermined temperature or more, charging is stopped and the secondary battery body is discharged to a second predetermined voltage equal to or lower than the first predetermined voltage. Characterized in that to.
【０００６】リチウムイオン二次電池においては、二次
電池本体の電圧が４．１Ｖ以上に上昇したときであっ
て、かつ、二次電池本体の温度が６０℃以上に上昇した
場合に電解液の分解反応が起きることから、請求項３の
発明に係る電池装置は、リチウムイオン二次電池本体を
備えて構成された電池装置において、前記二次電池本体
の電圧を検出する電圧検出手段と、前記二次電池本体の
温度を検出する温度検出手段とを設け、前記電圧検出手
段により充電時における前記二次電池本体の電圧が４．
１Ｖ以上に上昇したことを検出したときであって、か
つ、前記温度検出手段により前記二次電池本体の温度が
６０℃以上に上昇したことを検出したときには、充電を
停止するとともに前記二次電池本体を４．１Ｖ未満に放
電させることを特徴とした。In a lithium ion secondary battery, when the voltage of the secondary battery body rises to 4.1 V or more and when the temperature of the secondary battery body rises to 60 ° C. or more, the electrolyte solution is Since the decomposition reaction occurs, the battery device according to the invention of claim 3 is a battery device including a lithium ion secondary battery main body, wherein the voltage detection means for detecting a voltage of the secondary battery main body; 3. a temperature detecting means for detecting a temperature of the secondary battery main body, wherein the voltage of the secondary battery main body at the time of charging is set by the voltage detecting means.
When it is detected that the temperature of the secondary battery has risen to 1 V or more, and when the temperature detecting means detects that the temperature of the secondary battery body has risen to 60 ° C. or more, charging is stopped and the secondary battery is charged. It is characterized in that the main body is discharged to less than 4.1V.
【０００７】請求項４の発明に係る電池パックは、リチ
ウムイオン二次電池本体を電池ケース内に収容してなる
ものにおいて、前記二次電池本体の電圧を検出する電圧
検出手段と、前記二次電池本体の温度を検出する温度検
出手段と、前記二次電池本体を放電させる放電回路を設
け、前記電圧検出手段により充電時における前記二次電
池本体の電圧が４．１Ｖ以上に上昇したことを検出した
ときであって、かつ、前記温度検出手段により前記二次
電池本体の温度が６０℃以上に上昇したことを検出した
ときには、充電を停止するとともに前記放電回路にて前
記二次電池本体を４．１Ｖ未満に放電させることを特徴
とする。According to a fourth aspect of the present invention, there is provided a battery pack in which a lithium ion secondary battery main body is accommodated in a battery case, wherein voltage detecting means for detecting a voltage of the secondary battery main body, Temperature detecting means for detecting the temperature of the battery body, and a discharging circuit for discharging the secondary battery body are provided, and the voltage detecting means determines that the voltage of the secondary battery body during charging has risen to 4.1 V or more. When it is detected, and when the temperature detecting means detects that the temperature of the secondary battery body has risen to 60 ° C. or higher, charging is stopped and the secondary battery body is discharged by the discharging circuit. It is characterized by discharging to less than 4.1V.
【０００８】[0008]
【発明の効果】本発明によれば、充電時において電圧検
出手段により非水電解液型二次電池本体の電圧が第１の
所定電圧に上昇したことを検出したときには、二次電池
本体をそれより低い電圧に放電させることにより、電解
液の分解反応によるガス発生は未然に防止され、二次電
池本体の内圧上昇が防止される。また、電池電圧が高く
ても電池温度が低ければガスの発生はないため、電池電
圧及び電池温度の両方を検出し、いずれもが所定電圧及
び所定温度を超えた場合に放電し、いずれか一方のみが
越えている場合には放電しない構成とすることにより過
剰な放電を防止することができる。According to the present invention, when the voltage detecting means detects that the voltage of the nonaqueous electrolyte secondary battery body has risen to the first predetermined voltage during charging, the secondary battery body is released. By discharging to a lower voltage, gas generation due to the decomposition reaction of the electrolytic solution is prevented beforehand, and an increase in the internal pressure of the secondary battery body is prevented. In addition, even if the battery voltage is high, if the battery temperature is low, no gas is generated.Therefore, both the battery voltage and the battery temperature are detected, and when both exceed the predetermined voltage and the predetermined temperature, discharge is performed. If only one of them is exceeded, excessive discharge can be prevented by employing a configuration in which discharge is not performed.
【０００９】[0009]
【発明の実施の形態】本発明を携帯電話用の電池パック
に適用した一実施形態について図面を参照して説明す
る。図１は本実施形態に係る電池パックの全体構造を分
解して示すものである。これは、例えば扁平箱形をなす
合成樹脂製の電池ケース１０の内部に二次電池本体２０
を収容して蓋１１にて密閉した構造をなし、図示しない
携帯電話に着脱自在に装着される。電池ケース１０の一
方の面の端部には外部電極用窓１２から二次電池本体２
０に設けた外部電極２６が覗いており、電池ケース１０
が図示しない携帯電話機に装着されたときにその携帯電
話機の内部回路と接続されて二次電池本体２０の充電及
び放電が可能になる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment in which the present invention is applied to a battery pack for a portable telephone will be described with reference to the drawings. FIG. 1 is an exploded view of the overall structure of the battery pack according to the present embodiment. This is because a secondary battery main body 20 is placed inside a battery case 10 made of, for example, a synthetic resin having a flat box shape.
And housed in a structure sealed with a lid 11 and detachably attached to a mobile phone (not shown). An end of one surface of the battery case 10 is connected to the secondary battery main body 2 through a window 12 for an external electrode.
The external electrode 26 provided on the battery case 10
Is connected to an internal circuit of the mobile phone when it is mounted on a mobile phone (not shown), so that the secondary battery body 20 can be charged and discharged.
【００１０】前記二次電池本体２０は、扁平な渦巻き状
に巻回されている発電要素２１をプラスチックフィルム
製の袋２２に収容し、その開口を密閉して製造されてい
る。上記発電要素２１は、詳細には図示しないが、正負
の両極板をセパレータを挟んで巻回して構成され、正極
活物質を例えばリチウムコバルト酸化物とすると共に負
極活物質をグラファイトとし、かつセパレータに含浸さ
せた電解液としてエチレンカーボネイト及びジエチルカ
ーボネイト及びジメチルカーボネイトを３：７の割合に
混合した混合液に六弗化リン酸リチウムを添加したもの
を使用した周知の非水電解液型二次電池であるリチウム
イオン二次電池を構成する。また、プラスチックフィル
ムは、アルミニウム箔をラミネートした耐圧性及び密閉
性に優れたものを使用している。The secondary battery body 20 is manufactured by housing a power generation element 21 wound in a flat spiral shape in a bag 22 made of a plastic film and sealing the opening thereof. Although not shown in detail, the power generating element 21 is configured by winding a positive / negative electrode plate with a separator interposed therebetween, and for example, the positive electrode active material is made of lithium cobalt oxide and the negative electrode active material is made of graphite. A well-known non-aqueous electrolyte type secondary battery using a mixture of ethylene carbonate, diethyl carbonate, and dimethyl carbonate in a ratio of 3: 7 to which lithium hexafluorophosphate is added as an impregnated electrolyte is used. A certain lithium ion secondary battery is constructed. Further, a plastic film having excellent pressure resistance and airtightness obtained by laminating an aluminum foil is used.
【００１１】この二次電池本体２０の端部からは正負一
対のリード線（図示せず）が導出され、これが二次電池
本体２０の端部に設けた制御回路基板２５に接続され、
この制御回路基板２５に設けた安全回路等を介して外部
電極２６に接続されている。A pair of positive and negative lead wires (not shown) are led out from the end of the secondary battery body 20 and connected to a control circuit board 25 provided at the end of the secondary battery body 20.
It is connected to an external electrode 26 via a safety circuit or the like provided on the control circuit board 25.
【００１２】また、前記二次電池本体２０の外表面に
は、温度検出手段に相当する温度センサー２７が固定さ
れている。この温度センサー２７は、二次電池本体２０
が電池ケース１０内に収容された状態で電池ケース１０
の内面と二次電池本体２０の外面との間に挟まれ、二次
電池本体２０の温度を検出する。A temperature sensor 27 corresponding to temperature detecting means is fixed on the outer surface of the secondary battery body 20. The temperature sensor 27 is connected to the
Is stored in the battery case 10 and the battery case 10
Is sandwiched between the inner surface of the secondary battery and the outer surface of the secondary battery body 20 to detect the temperature of the secondary battery body 20.
【００１３】上記制御回路基板２５に搭載された電気的
構成は図３に示す通りである。二次電池本体２０の正極
側のリードが外部電極２６の一方に接続され、負極側の
リード線が常時はオン状態にされている制御用ＦＥＴ２
８を介して他方の外部電極２６に接続されている。ま
た、リード線間には放電抵抗２９及び放電用ＦＥＴ３０
を順に連ねた放電回路３１が設けられ、その放電用ＦＥ
Ｔ３０は常時はオフ状態にあるが、これがオンすること
により二次電池本体２０を放電させることができる。そ
して、リード線間の電圧を供給した放電制御ＩＣ３２が
設けられ、ここから温度センサー２７に電圧が印加され
ている。この放電制御ＩＣ３２は、二次電池本体２０の
温度を監視すると共に、二次電池の電圧も監視してい
る。この放電制御ＩＣ３２は、常時は、放電用ＦＥＴ３
０をオフ、制御用ＦＥＴ２８をオン状態としているが、
温度センサー２７が６０℃以上を検知し、かつ、二次電
池本体２０の電圧が第１の所定電圧である４．１Ｖとな
ると各ＦＥＴ２８，３０を反転させ、そして二次電池本
体２０のリード線間の電圧が例えば４．１Ｖ以下のある
値（第２の所定電圧）にまで低下すると、各ＦＥＴ２
８，３０を再び反転させて当初の状態に戻すように構成
されている。The electrical configuration mounted on the control circuit board 25 is as shown in FIG. The control FET 2 in which the positive electrode lead of the secondary battery body 20 is connected to one of the external electrodes 26 and the negative electrode lead wire is normally on.
8 is connected to the other external electrode 26. A discharge resistor 29 and a discharge FET 30 are provided between the lead wires.
Are provided in order, and the discharging FE is provided.
T30 is normally in an off state, but when it is turned on, the secondary battery body 20 can be discharged. A discharge control IC 32 that supplies a voltage between the lead wires is provided, and a voltage is applied to the temperature sensor 27 from the discharge control IC 32. The discharge control IC 32 monitors the temperature of the secondary battery body 20 and also monitors the voltage of the secondary battery. The discharge control IC 32 is always connected to the discharge FET 3
0 is off and the control FET 28 is on,
When the temperature sensor 27 detects 60 ° C. or higher and the voltage of the secondary battery body 20 reaches the first predetermined voltage of 4.1 V, the FETs 28 and 30 are inverted, and the lead wire of the secondary battery body 20 is turned on. When the voltage between them drops to a certain value (second predetermined voltage) of, for example, 4.1 V or less, each FET 2
The configuration is such that 8, 30 is reversed again to return to the initial state.
【００１４】ここで、二次電池の電圧とガスの発生につ
いて図４により説明する。電池パックを所定の定電圧
（２．８Ｖ〜４．５Ｖ）において、１Ｃ充電を３時間し
た後、電池パックを所定の温度（６０℃、７０℃、８０
℃）に７２時間放置したときの発生したガス量の測定結
果を図４に示した。試験に使用した電池パックは、放電
容量５５０ｍＡｈである。この図４から７０℃、８０℃
に電池パックを放置した場合においては、電圧が４．１
Ｖ以上になると正極の触媒作用により、電解液が酸化分
解されることが判る。従って、電池電圧が４．１Ｖ以上
であり、かつ電池温度が６０℃以上である場合には、放
電することにより電池電圧を下げることにより、ガスの
発生を防止し、電池本体の内圧の上昇を防止することが
できる。Here, the voltage and gas generation of the secondary battery will be described with reference to FIG. After charging the battery pack at a predetermined constant voltage (2.8 V to 4.5 V) for 1 hour at 1 C, the battery pack is heated to a predetermined temperature (60 ° C., 70 ° C., 80 ° C.).
FIG. 4 shows the measurement results of the amount of generated gas when left at 72 ° C.) for 72 hours. The battery pack used for the test has a discharge capacity of 550 mAh. From FIG. 4, 70 ° C. and 80 ° C.
When the battery pack is left unattended, the voltage is 4.1
It is understood that when the voltage exceeds V, the electrolytic solution is oxidatively decomposed by the catalytic action of the positive electrode. Therefore, when the battery voltage is 4.1 V or more and the battery temperature is 60 ° C. or more, the generation of gas is prevented by lowering the battery voltage by discharging, and the internal pressure of the battery body is increased. Can be prevented.
【００１５】本実施形態の作用は次の通りである。携帯
電話機が充電器にセットされているとき、制御ＦＥＴ２
８はオン、放電用ＦＥＴ３０はオフされており、二次電
池本体２０は充電器に接続された状態にある。二次電池
本体２０が満充電に至ると、その電圧は４．２Ｖ程度に
達するが、通常は雰囲気の温度が６０℃以下であるため
特に問題は生じない。ここで、万一、携帯電話機が例え
ば夏の車中に放置される等の高温雰囲気に晒されると、
二次電池本体２０も異常な高温度となり、その結果、二
次電池本体２０内の正極表面で電解液が分解反応を起こ
し、それによってガスが発生することがある。The operation of this embodiment is as follows. When the mobile phone is set in the charger, control FET2
8 is on, the discharging FET 30 is off, and the secondary battery body 20 is in a state of being connected to the charger. When the secondary battery body 20 is fully charged, its voltage reaches about 4.2 V, but there is no particular problem since the temperature of the atmosphere is usually 60 ° C. or less. Here, if the mobile phone is exposed to a high-temperature atmosphere such as being left in a car in summer, for example,
The temperature of the secondary battery body 20 also becomes abnormally high, and as a result, the electrolytic solution may cause a decomposition reaction on the surface of the positive electrode in the secondary battery body 20, thereby generating gas.
【００１６】従って、二次電池本体２０において温度セ
ンサー２７が６０℃以上の高温度を検知し、かつ、二次
電池本体２０の電圧が４．１Ｖ以上であることを検知し
た場合には放電制御ＩＣ３２は制御用ＦＥＴ２８をオフ
とし、かつ、放電用ＦＥＴ３０をオンとする。この結
果、二次電池本体２０が充電器から切り離されると共
に、放電回路３１によって放電が行われ、電池電圧は徐
々に低下する。そして、電池電圧が電解液の分解電圧未
満に低下すると、放電制御ＩＣ３２は放電用ＦＥＴ３０
をオフさせ、制御用ＦＥＴ２８をオンさせる。この結
果、ガスの発生が防止され、内圧上昇が抑えられるか
ら、電池パックが異常に膨張したり、甚だしくは破裂に
至ったりすることを未然に防止することができる。Accordingly, when the temperature sensor 27 detects high temperature of 60 ° C. or more in the secondary battery body 20 and detects that the voltage of the secondary battery body 20 is 4.1 V or more, discharge control is performed. The IC 32 turns off the control FET 28 and turns on the discharge FET 30. As a result, the secondary battery main body 20 is disconnected from the charger, and the discharge is performed by the discharge circuit 31, so that the battery voltage gradually decreases. When the battery voltage falls below the decomposition voltage of the electrolytic solution, the discharge control IC 32
Is turned off, and the control FET 28 is turned on. As a result, generation of gas is prevented, and an increase in the internal pressure is suppressed, so that the battery pack can be prevented from abnormally expanding or severely ruptured.
【００１７】以上述べたように、本実施形態では二次電
池本体の電圧及び温度が所定の値よりも上昇すると検知
して電池電圧を電解液の分解電圧以下まで放電させるか
ら、電池パックが異常に膨張したり、破裂したりするこ
とを確実に防止することができるという効果を奏する。As described above, in this embodiment, when the voltage and temperature of the secondary battery body are detected to rise above predetermined values, the battery voltage is discharged to below the decomposition voltage of the electrolytic solution. This has the effect of reliably preventing expansion or rupture.
【００１８】本発明は上記記述及び図面によって説明し
た実施の形態に限定されるものではなく、例えば次のよ
うな実施の形態も本発明の技術的範囲に含まれ、さら
に、下記以外にも要旨を逸脱しない範囲内で種々変更し
て実施することができる。The present invention is not limited to the embodiments described above with reference to the drawings. For example, the following embodiments are also included in the technical scope of the present invention. Various changes can be made without departing from the scope of the present invention.
【００１９】上記実施形態では、二次電池本体２０を電
池ケース１０内に保護回路等と共に収容して電池パック
として構成し、これを携帯電話機に着脱自在に装着する
構成を例示したが、これに限られるものではない。例え
ば、二次電池本体を機器内に直接に組み込んだ組み込み
構造の電池装置にも適用することができる。In the above-described embodiment, the secondary battery main body 20 is housed in the battery case 10 together with a protection circuit and the like to constitute a battery pack, and the secondary battery body 20 is detachably attached to the portable telephone. It is not limited. For example, the present invention can also be applied to a battery device having a built-in structure in which a secondary battery main body is directly built in a device.
【図１】 本発明の一実施形態を示す電池パックの一部
破断斜視図FIG. 1 is a partially cutaway perspective view of a battery pack showing one embodiment of the present invention.
【図２】 その断面図FIG. 2 is a sectional view thereof.
【図３】 電池パック内の電気回路を示すブロック図FIG. 3 is a block diagram showing an electric circuit in the battery pack.
【図４】 電池パックの電圧と発生したガス量の相関関
係を示す図FIG. 4 is a diagram showing a correlation between a voltage of a battery pack and an amount of generated gas.
１０……電池ケース ２０……二次電池本体 ２５……制御回路基板 ２７……温度センサー（温度検出手段） ２８……制御用ＦＥＴ ２９……放電抵抗 ３０……放電用ＦＥＴ ３１……放電回路 ３２……放電制御ＩＣ DESCRIPTION OF SYMBOLS 10 ... Battery case 20 ... Secondary battery main body 25 ... Control circuit board 27 ... Temperature sensor (temperature detection means) 28 ... Control FET 29 ... Discharge resistance 30 ... Discharge FET 31 ... Discharge circuit 32 ... Discharge control IC
Claims (4)
成された電池装置において、前記二次電池本体の電圧を
検出する電圧検出手段を設け、この電圧検出手段により
充電時における前記二次電池本体の電圧が第１の所定電
圧に上昇したことを検出したときには、充電を停止する
とともに前記二次電池本体を前記第１の所定電圧以下の
第２の所定電圧に放電させることを特徴とする非水電解
液型電池装置。1. A battery device comprising a non-aqueous electrolyte type secondary battery main body, comprising: a voltage detecting means for detecting a voltage of the secondary battery main body; When detecting that the voltage of the secondary battery main body has risen to the first predetermined voltage, stopping charging and discharging the secondary battery main body to a second predetermined voltage equal to or lower than the first predetermined voltage. Characteristic non-aqueous electrolyte type battery device.
成された電池装置において、前記二次電池本体の電圧を
検出する電圧検出手段と、前記二次電池本体の温度を検
出する温度検出手段とを設け、前記電圧検出手段により
充電時における前記二次電池本体の電圧が第１の所定電
圧に上昇したことを検出したときであって、かつ、前記
温度検出手段により前記二次電池本体の温度が所定温度
以上に上昇したことを検出したときには、充電を停止す
るとともに前記二次電池本体を前記第１の所定電圧以下
の第２の所定電圧に放電させることを特徴とする非水電
解液型電池装置。2. A battery device comprising a non-aqueous electrolyte type secondary battery main body, a voltage detecting means for detecting a voltage of the secondary battery main body, and detecting a temperature of the secondary battery main body. Temperature detecting means, when the voltage detecting means detects that the voltage of the secondary battery body at the time of charging has risen to a first predetermined voltage, and When detecting that the temperature of the battery main body has risen to a predetermined temperature or higher, charging is stopped and the secondary battery main body is discharged to a second predetermined voltage lower than the first predetermined voltage. Water electrolyte type battery device.
成された電池装置において、前記二次電池本体の電圧を
検出する電圧検出手段と、前記二次電池本体の温度を検
出する温度検出手段とを設け、前記電圧検出手段により
充電時における前記二次電池本体の電圧が４．１Ｖ以上
に上昇したことを検出したときであって、かつ、前記温
度検出手段により前記二次電池本体の温度が６０℃以上
に上昇したことを検出したときには、充電を停止すると
ともに前記二次電池本体を４．１Ｖ未満に放電させるこ
とを特徴とするリチウムイオン二次電池装置。3. A battery device comprising a lithium ion secondary battery body, a voltage detecting means for detecting a voltage of the secondary battery body, and a temperature detecting means for detecting a temperature of the secondary battery body. Is provided when the voltage detecting means detects that the voltage of the secondary battery main body at the time of charging has risen to 4.1 V or more, and the temperature of the secondary battery main body is detected by the temperature detecting means. A lithium ion secondary battery device characterized in that when it is detected that the temperature has risen to 60 ° C. or higher, charging is stopped and the secondary battery body is discharged to less than 4.1 V.
ス内に収容してなるものにおいて、前記二次電池本体の
電圧を検出する電圧検出手段と、前記二次電池本体の温
度を検出する温度検出手段と、前記二次電池本体を放電
させる放電回路を設け、前記電圧検出手段により充電時
における前記二次電池本体の電圧が４．１Ｖ以上に上昇
したことを検出したときであって、かつ、前記温度検出
手段により前記二次電池本体の温度が６０℃以上に上昇
したことを検出したときには、充電を停止するとともに
前記放電回路にて前記二次電池本体を４．１Ｖ未満に放
電させることを特徴とする電池パック。4. A battery comprising a lithium ion secondary battery main body housed in a battery case, a voltage detecting means for detecting a voltage of the secondary battery main body, and a temperature detecting means for detecting a temperature of the secondary battery main body. Means, and a discharge circuit for discharging the secondary battery main body is provided, and when the voltage detecting means detects that the voltage of the secondary battery main body at the time of charging has risen to 4.1 V or more, and When the temperature detecting means detects that the temperature of the secondary battery main body has risen to 60 ° C. or higher, it stops charging and discharges the secondary battery main body to less than 4.1 V by the discharging circuit. Characteristic battery pack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000245611A JP2002056900A (en) | 2000-08-14 | 2000-08-14 | Nonaqueous electrolyte type battery device and battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000245611A JP2002056900A (en) | 2000-08-14 | 2000-08-14 | Nonaqueous electrolyte type battery device and battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002056900A true JP2002056900A (en) | 2002-02-22 |
Family
ID=18736100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000245611A Pending JP2002056900A (en) | 2000-08-14 | 2000-08-14 | Nonaqueous electrolyte type battery device and battery pack |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002056900A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006064726A1 (en) * | 2004-12-15 | 2006-06-22 | Matsushita Electric Industrial Co., Ltd. | Power supply system and portable apparatus employing it |
| KR100786937B1 (en) | 2005-07-20 | 2007-12-17 | 주식회사 엘지화학 | Apparatus for protection of secondary battery |
| WO2008092087A1 (en) * | 2007-01-25 | 2008-07-31 | Eveready Battery Company, Inc. | Use extender device |
| JP2011061391A (en) * | 2009-09-08 | 2011-03-24 | Sharp Corp | Personal digital assistant |
| JP2011115040A (en) * | 2009-11-26 | 2011-06-09 | Samsung Sdi Co Ltd | Battery pack preventing high temperature swelling of battery cell, and method thereof |
| JP2014090664A (en) * | 2006-11-06 | 2014-05-15 | Nec Corp | Battery control system and electric cell |
| EP2221940B1 (en) * | 2009-02-18 | 2018-01-10 | Samsung SDI Co., Ltd. | Self-discharge circuit for secondary battery, and secondary battery including the same |
| EP4152475A4 (en) * | 2020-10-05 | 2024-01-03 | Lg Energy Solution Ltd | Secondary battery safety management device and method |
-
2000
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7872448B2 (en) | 2004-12-15 | 2011-01-18 | Panasonic Corporation | Power supply system and portable equipment using the same |
| WO2006064726A1 (en) * | 2004-12-15 | 2006-06-22 | Matsushita Electric Industrial Co., Ltd. | Power supply system and portable apparatus employing it |
| JP2013219033A (en) * | 2005-07-20 | 2013-10-24 | Lg Chem Ltd | Apparatus for protecting secondary battery |
| KR100786937B1 (en) | 2005-07-20 | 2007-12-17 | 주식회사 엘지화학 | Apparatus for protection of secondary battery |
| DE112006001895B4 (en) | 2005-07-20 | 2018-06-07 | Lg Chem, Ltd. | Accumulator and device for protecting an accumulator |
| JP2009502020A (en) * | 2005-07-20 | 2009-01-22 | エルジー・ケム・リミテッド | Secondary battery protection device |
| JP2014090664A (en) * | 2006-11-06 | 2014-05-15 | Nec Corp | Battery control system and electric cell |
| US9780593B2 (en) | 2006-11-06 | 2017-10-03 | Nec Corporation | Electric cells for battery pack, battery control system, and battery control method |
| US8343670B2 (en) | 2007-01-25 | 2013-01-01 | Eveready Battery Company, Inc. | Use extender device |
| WO2008092087A1 (en) * | 2007-01-25 | 2008-07-31 | Eveready Battery Company, Inc. | Use extender device |
| EP2221940B1 (en) * | 2009-02-18 | 2018-01-10 | Samsung SDI Co., Ltd. | Self-discharge circuit for secondary battery, and secondary battery including the same |
| JP2011061391A (en) * | 2009-09-08 | 2011-03-24 | Sharp Corp | Personal digital assistant |
| JP2011115040A (en) * | 2009-11-26 | 2011-06-09 | Samsung Sdi Co Ltd | Battery pack preventing high temperature swelling of battery cell, and method thereof |
| US8896271B2 (en) | 2009-11-26 | 2014-11-25 | Samsung Sdi Co., Ltd. | Battery pack capable of preventing battery cell from high-temperature swelling and method thereof |
| EP4152475A4 (en) * | 2020-10-05 | 2024-01-03 | Lg Energy Solution Ltd | Secondary battery safety management device and method |
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