JP3605733B2 - Charging method - Google Patents

Charging method Download PDF

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JP3605733B2
JP3605733B2 JP2325794A JP2325794A JP3605733B2 JP 3605733 B2 JP3605733 B2 JP 3605733B2 JP 2325794 A JP2325794 A JP 2325794A JP 2325794 A JP2325794 A JP 2325794A JP 3605733 B2 JP3605733 B2 JP 3605733B2
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charging
secondary battery
temperature
time
range
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JPH07211354A (en
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正隆 山下
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株式会社エイ・ティーバッテリー
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage
    • Y02E60/12Battery technologies with an indirect contribution to GHG emissions mitigation

Description

【0001】 [0001]
【産業上の利用分野】 BACKGROUND OF THE INVENTION
本発明は、非水系の二次電池の充電方法に係り、特に温度範囲条件に対応し各温度にて二次電池を最適かつ最短の充電時間で充電することのできる充電方法に関する。 The present invention relates to a method of charging a secondary battery as a nonaqueous, it relates to a charging method capable of charging at especially at temperatures ranging from conditions optimum and shortest charging time of the secondary battery at each temperature.
【0002】 [0002]
【従来の技術】 BACKGROUND OF THE INVENTION
近年、携帯電話、ビデオムービー、携帯型ノートパソコン等のコードレスで使用される電子機器がめざましく普及してきている。 In recent years, mobile phone, video movies, portable notebook computers such as the electronic equipment used in cordless has been spread remarkably. そして、更なる高性能化、小型軽量化が図られていることから、これら電子機器の電源となる二次電池の高容量化及び高エネルギー化の要請が高まっている。 Then, higher performance, since the reduction in size and weight, there is an increasing demand for high capacity and high energy of the secondary battery as a power source of these electronic devices.
【0003】 [0003]
この二次電池としては、鉛二次電池、ニッケルカドミウム二次電池が従来から用いられているが、最近では更に小型で且つ高電圧が得られるすなわち高エネルギー密度化が図れるリチウムイオン二次電池の如き非水系電解液の二次電池の開発が進んでいる。 As the secondary battery, a lead battery, Nickel-cadmium secondary batteries have been conventionally used, recently more of lithium ion secondary battery attained is to small and a high voltage is obtained i.e. higher energy density is such as the development of the secondary battery of the non-aqueous electrolyte solution is progressing.
【0004】 [0004]
このリチウムイオン二次電池の如き非水系の二次電池にあっては、端子間電圧が所定電圧以上になると安全上好ましくないことから、その充電に際しては二次電池の端子間電圧が一定電圧になるまでは定電流充電若しくは準定電流充電を行い、そして端子間電圧が一定電圧に達した後は定電圧充電を行う充電電流制限型の定電圧充電方法等が用いられていた。 In the secondary battery of such non-aqueous lithium ion secondary battery, since the terminal voltage is not safe on preferably becomes equal to or larger than a predetermined voltage, the constant voltage is the voltage between the terminals of the secondary battery during the charge until a constant current charge or quasi constant current charging, and after the terminal voltage reaches a certain voltage is constant-voltage charging method, etc. of the charging current limiting type that performs constant voltage charging has been used.
【0005】 [0005]
しかし、従来の充電電流制限型の定電圧充電方法にあっては、充電時間を短縮すべく急速充電を行う際には、充電電流の制限を緩め充電電流を大きくすることが必要となるものの、充電電流の増大は充電装置における電流定格の増大を招くものであり、これは充電装置の低コスト化や充電装置の小型化の流れと逆行するものであるとともに、充放電の繰り返しでの容量保持率の低下の虞れもあった。 However, in the constant voltage charging method of a conventional charge current-limited, when performing rapid charging in order to shorten the charging time, although it is necessary to increase the charging current to loosen the limit of the charging current, increase in the charging current are those causing an increase in current rating in the charging device, with which is to reverse the flow of the miniaturization of cost reduction and charging device of the charging device, the capacity retention in repeated charge and discharge possibility of reduction in the rate was also there.
【0006】 [0006]
そこで本出願の発明者は、特開平4−123771号公報に開示されている非水系二次電池の急速充電方法を案出した。 Therefore, the inventors of the present application has devised a rapid charging method of a non-aqueous secondary battery disclosed in Japanese Patent Laid-Open No. 4-123771. これは、充電開始当初は定電流充電若しくは準定電流充電を行い、次いでパルス充電に移行するもので、従来の充電電流制限型の定電圧充電方法における定電圧充電に要する時間を大幅に短縮させることにより、充電装置の定格電流を増大させることなく充電時間を短縮できるという優れた充電方法である。 This charge start initially performs constant current charging or quasi constant current charging, and then as to shift to pulse charging greatly reduces the time to the constant voltage charging in the constant voltage charging method of a conventional charge current-limited by an excellent charging method that can shorten the charging time without increasing the rated current of the charging device.
【0007】 [0007]
【発明が解決しようとする課題】 [Problems that the Invention is to Solve
しかしながら、前述したパルス充電による充電方法は、適宜最大電流値を設定することにより急速充電することができるものの、過酷な使用条件を想定した低温から高温までの広い温度範囲の全ての条件に対応して、好適な充電率で充電を行うことは困難であった。 However, the method charging by pulse charging described above corresponds to all conditions of a wide temperature range but can rapidly charge by setting an appropriate maximum current value, the low-temperature assuming a harsh conditions up to a high temperature Te, it is difficult to charge a suitable charging rate.
【0008】 [0008]
そこで、本発明にあっては、低温から高温までの温度範囲条件に対応し、各温度での二次電池の最適かつ最短の充電時間を可能とする充電方法を実現することを目的とする。 Therefore, in the present invention corresponds to the temperature range conditions from low to high temperatures, and to realize a charging method that allows the optimum and shortest charging time of the secondary battery at each temperature.
【0009】 [0009]
【課題を解決するための手段】 In order to solve the problems]
上述した目的を達成すべく、本発明の充電方法は、非水系の二次電池のパルス充電方法において、該二次電池における−40℃から+80℃の温度範囲条件に対応し、該二次電池を充電するパルス電流の1サイクル中のオン時間をほぼ一定としかつ二次電池の温度が低温から高温に変移するのに応じてオフ時間を100秒間乃至1秒間の範囲から0.5秒間乃至0.0001秒間の範囲まで負の温度係数で連続的にもしくは段階的に減少変化させてデューティ比を大きくするとともに、オン時間とオフ時間の和を1周期とするパルス電流の1サイクルの周波数を−40℃で1Hzから0.01Hzの間、+80℃で10kHzから2Hzの間の範囲で正の温度係数で連続的にもしくは段階的に変化させることを特徴とするものである。 To achieve the above object, the charging method of the present invention, in the pulse charge method for a secondary battery of nonaqueous, corresponding to the temperature range condition of + 80 ° C. from -40 ℃ in said secondary battery, said secondary battery substantially constant Toshikatsu to 0.5 seconds off time from a range of 100 seconds to 1 second depending on the temperature of the secondary battery is displaced from a low temperature to a high temperature on-time in one cycle of the pulse current charging the 0 with the extent of .0001 seconds continuously or stepwise decreased changes with a negative temperature coefficient to increase the duty ratio, on-time and off-time of 1 cycle frequency of the pulse current to sum the 1 cycle - between 1Hz of 0.01Hz at 40 ° C., and it is characterized in successively or be stepwise varied in the positive temperature coefficient in the range between 2Hz from 10kHz at + 80 ° C..
【0010】 [0010]
【作用】 [Action]
非水系の二次電池のパルス充電方法において、該二次電池における−40℃から+80℃の温度範囲条件に対応し、該二次電池を充電するパルス電流の1サイクル中のオフ時間を100秒間乃至1秒間の範囲から0.5秒間乃至0.0001秒間の範囲まで負の温度係数で連続的にもしくは段階的に減少変化させることで、低温時には二次電池における緩慢な化学反応に応じたゆっくりした小さな充電率で好適に充電するとともに、高温時には二次電池が対応し得る大きな充電率で急速に充電することができる。 In the pulse method of charging a secondary battery as a nonaqueous, corresponding to the temperature range condition of + 80 ° C. from -40 ℃ in said secondary battery, 100 seconds OFF time during one cycle of the pulse current for charging the rechargeable battery to be to continuously or stepwise decrease changes with a negative temperature coefficient from a range of one second to the range of 0.5 seconds to 0.0001 seconds, slowly corresponding to slow chemical reactions in the secondary battery at low temperatures with suitably charged with the small charging rate, it is possible to rapidly charge a large charging rate secondary battery may correspond at high temperatures.
【0011】 [0011]
また、非水系の二次電池を充電するパルス電流の1サイクル中のオン時間の比率を示すデューティ比を、二次電池の温度が低温から高温に変移するのに応じて連続的にもしくは段階的に大きくすることで、低温の二次電池にとって好適なゆっくりした小さな充電率から、高温の二次電池が対応し得る急速な大きな充電率まで、低温から高温まで各温度に対応した最適でかつ最速の充電時間で充電することができる。 Further, the duty ratio indicating the ratio of the ON time in one cycle of the pulse current charging the secondary battery of nonaqueous, continuously or stepwise the temperature of the secondary battery in response to transition from a low temperature to a high temperature by greatly enough, from a small charging rate was suitable slow for low temperature of the secondary battery, to rapid large charging rate is high temperature of the secondary battery may correspond, optimal and fastest corresponding to each temperature from a low temperature to a high temperature it can be charged in the charging time.
【0012】 [0012]
また、非水系の二次電池を充電するパルス電流の1サイクル中のオン時間をほぼ一定とするとともに、前記1サイクル中のオフ時間を、二次電池の温度が低温から高温に変移するのに応じて連続的にもしくは段階的に短くすることで、低温の二次電池にとって好適なゆっくりした小さな充電率から、高温の二次電池が対応し得る急速な大きな充電率まで、低温から高温まで連続的に各温度に対応した最適でかつ最速の充電時間で充電することができる。 Further, substantially with a constant on-time in one cycle of the pulse current charging the secondary battery of nonaqueous, the off-time during said one cycle, to a temperature of the secondary battery is displaced from a low temperature to a high temperature correspondingly the continuously or stepwise be shortened, continuously from the small charging rate was suitable slow for low temperature of the secondary battery, to rapid large charging rate is high temperature of the secondary battery may correspond, from low to high temperature it can be charged by the optimal and fastest charge time corresponding to each temperature manner.
【0013】 [0013]
【実施例】 【Example】
図1は、本発明の充電方法の第1の実施例におけるパルス電流の波形図である。 Figure 1 is a waveform diagram of the pulse current in the first embodiment of the charging method of the present invention. このパルス電流1は矩形波からなり、オン時間t(on)とオフ時間t(off)とで1サイクルを形成し、このうちオン時間t(on)をほぼ一定に保持しつつ、オフ時間t(off)の温度特性を負の温度係数としている。 The pulse current 1 comprises a rectangular wave, to form a 1 cycle out with the on-time t (on) Off Time t and (off), while maintaining these on-time t (on) substantially constant, the off time t It has a temperature characteristic of the (off) a negative temperature coefficient.
【0014】 [0014]
図1(a)は、二次電池もしくはその周囲温度が約−20℃のときのパルス電流の波形であり、オン時間t(on)とオフ時間t(off)の比率がほぼ1対1となっている。 Figure 1 (a) is a waveform of a pulse current when the secondary battery or ambient temperature that is about -20 ° C., ON time t (on) Off ratio of the time t (off) is substantially 1: 1 and going on. また、図1(b)は、二次電池もしくはその周囲温度が約0℃のときのパルス電流の波形であり、オン時間t(on)とオフ時間t(off)の比率がほぼ10対1となっている。 1 (b) is a waveform of a pulse current when the secondary battery or ambient temperature that is about 0 ° C., the on-time t (on) and off-time t (off) approximately 10 pairs a ratio of 1 It has become. そして、図1(c)は、二次電池もしくはその周囲温度が約+30℃のときのパルス電流の波形であり、オン時間t(on)とオフ時間t(off)の比率がほぼ100対1となっている。 Then, FIG. 1 (c) is a waveform of a pulse current when the rechargeable battery or an ambient temperature thereof is about + 30 ° C., the on-time t (on) and off-time t (off) approximately 100 to the ratio of 1 It has become.
【0015】 [0015]
図2は、本発明の充電方法の第1の実施例において、パルス電流のオン時間t(on)を10秒と一定にした場合に、オフ時間t(off)が設定されるべき温度特性を示すグラフ図である。 2, in the first embodiment of the charging method of the present invention, when a pulse current on-time t to (on) was constant at 10 seconds, the temperature characteristic to off time t (off) is set it is a graph showing. 枠Aにて囲繞された範囲が本発明の充電方法の第1の実施例における好適な範囲であり、この範囲内において二次電池の種類、定格等に応じて適宜好適な温度特性を選択する。 A preferred range in the first embodiment of the charging method in the range which is surrounded by the present invention in the frame A, the type of the rechargeable battery within this range, appropriately selected suitable temperature characteristic depending on the rated or the like . オフ時間t(off)は、−40℃では100秒から1秒の間、+80℃では0.5秒から0.0001秒の間の範囲内とすることが好適である。 Off time t (off) during the one second from -40 ℃ At 100 seconds, preferably be in the range of between 0.0001 seconds 0.5 seconds at + 80 ° C..
【0016】 [0016]
また、一般的な二次電池、例えば特開昭55−13613号公報、特開昭62−90863号公報、特開昭63−299056号公報等で開示されているリチウムイオン二次電池等の実用的な温度範囲である−20℃〜+60℃の範囲では、通常枠Bで示される−20℃で10秒から1秒の間、+60℃で0.1秒から0.001秒の間の範囲に設定するのが好ましい。 Also, common secondary battery, for example, JP 55-13613, JP-Sho 62-90863, JP-practical, such as a lithium ion secondary battery disclosed in JP 63-299056 Laid specific range of temperatures in the range -20 ° C. ~ + 60 ℃ is between 10 seconds -20 ° C. represented by the normal frame B of a second, the range between 0.001 seconds 0.1 seconds at + 60 ℃ preferably set to. また、オン時間t(on)は、100秒から0.01秒が好適で、更に好ましくは10秒から0.1秒の範囲内が望ましい。 Moreover, the on-time t (on) is 0.01 seconds preferably from 100 seconds, and more preferably is desirably in the range of 10 seconds to 0.1 seconds.
【0017】 [0017]
図3は、パルス充電の充電電流波形が矩形波の場合に、オン時間の長さをパラメータとしてオフ時間を変化させたときの充電率(平均充電電流値をピーク電流値で除した百分率)を示すグラフ図である。 3, when the charging current waveform of the pulse charging of the rectangular wave, the charging rate when changing the off time the length of on-time as a parameter (percentage divided by the average charging current value peak current value) it is a graph showing. このグラフ図を参考にして、各種二次電池における低温時に好適な充電率と高温時に好適な充電率とから、各温度におけるオフ時間を設定すればよいものである。 The graph with reference, and a low temperature suitable charge rate and a high temperature during a suitable charging rate to the various secondary batteries, in which may be set off time at each temperature.
【0018】 [0018]
図4は、本発明の充電方法の第2の実施例を示し、オン時間t(on)とオフ時間t(off)の和を1周期とするパルス電流の1サイクルの周波数(以下、充電周波数という)の温度特性を示すグラフ図である。 Figure 4 shows a second embodiment of the charging method of the present invention, the on-time t (on) and off-time t (off) 1 cycle of the frequency of the pulse current to one period the sum of (hereinafter, charging frequency is a graph showing a temperature characteristic of) that. この充電周波数の温度特性は正の温度係数を有し、−40℃では1Hzから0.01Hzの間、+80℃では10kHzから2Hzの間の枠Cで示される範囲が好適である。 The temperature characteristics of the charging frequency has a positive temperature coefficient, between 0.01Hz from 1Hz at -40 ° C., it is preferably in a range represented by a frame C between 2Hz from 10kHz at + 80 ° C..
【0019】 [0019]
また、一般的な二次電池、例えば特開昭55−13613号公報、特開昭62−90863号公報、特開昭63−299056号公報等で開示されているリチウムイオン二次電池等の実用的な温度範囲である−20℃〜+60℃の範囲では、通常枠Dで示される−20℃で0.05Hz〜5Hzの間、+60℃で10Hz〜1kHzの間の範囲に設定するのが好ましい。 Also, common secondary battery, for example, JP 55-13613, JP-Sho 62-90863, JP-practical, such as a lithium ion secondary battery disclosed in JP 63-299056 Laid specific range of temperatures in the range -20 ° C. ~ + 60 ℃ during the 0.05Hz~5Hz at -20 ° C. represented by the normal frame D, preferably set to range between 10Hz~1kHz at + 60 ℃ . 尚、オン時間とオフ時間の比率(t(on)/t(off))は1対1とは限らず、二次電池の各温度での充電特性に合わせて設定する。 Incidentally, on-time and off-time ratio (t (on) / t (off)) is not limited to one-to-one set in accordance with the charging characteristics of the respective temperature of the secondary battery. 一般に、0.1〜10の範囲で変えれば充分であり、低温から高温になるにつれて増大するように設定するが、連続的に変化する必要はなく、段階的に変化させてもよい。 In general, it is sufficient to changing in the range of 0.1 to 10, but set to increase as they become from a low temperature to a high temperature, there is no need to change continuously, it may be changed stepwise. 勿論、オン時間とオフ時間の比率は一定でもよいが、この場合は低温側での特性に制約される。 Of course, the on-time and off time ratio may be constant, but this case is limited to the characteristic of the low temperature side.
【0020】 [0020]
また、本発明の第3の実施例としては、特に図示しないが、パルス電流のオン時間の温度特性を正の温度係数を有するものとするとともに、パルス電流のオフ時間の温度特性を負の温度係数を有するものとするものである。 As the third embodiment of the present invention, although not particularly shown, as well as to have a positive temperature coefficient temperature characteristics of the on-time of the pulse current, a temperature characteristic of the off-time of the pulse current negative temperature in which it shall have a coefficient. これは、上述した本発明の第1の実施例と同様に、パルス電流のオン時間に対するオフ時間の比率が温度の上昇とともに減少するものである。 This is similar to the first embodiment of the present invention described above, the ratio of the off time to the on-time of the pulse current is to decrease with increasing temperature.
【0021】 [0021]
尚、上述した各実施例において、充電電流波形を矩形波として説明したが、勿論これに限定されることはなく、半波の正弦波、歪んだ矩形波、歪んだ半波の正弦波、DCバイアスされた正弦波等であってもよいものである。 In each embodiment described above, has been described charging current waveform as a square wave, not of course limited thereto, sinusoidal half-wave, a distorted square wave, distorted sinusoidal halfwave, DC a biased sinusoidal like those may be.
【0022】 [0022]
また、上述した各実施例において、低温時から高温時にかけてパルス電流のオフ時間が減少するが、電極と電解液の界面のインピーダンスが全電池の内部インピーダンスに対する寄与の割合が小さくなる、例えば特開昭55−13613号公報、特開昭62−90863号公報、特開昭63−299056号公報等で開示されているリチウムイオン二次電池にあっては、常温を超える高温域ではパルス電流のオン時間に対してオフ時間の比率が充分小さくなることから、パルス電流のオフ時間を必ずしも減少させる必要はない。 In each embodiment described above, the off-time of the pulse current over the time of high temperature from the low temperature is reduced, the impedance of the interface between the electrode and the electrolyte is the percentage of contribution is small relative to the internal impedance of the full cell, for example, Japanese Akira 55-13613, JP-Sho 62-90863 discloses, in the lithium ion secondary battery disclosed in JP 63-299056 Laid, on the pulse current in a high temperature range exceeding room temperature since the ratio of the off-time is sufficiently small with respect to time, it is not always necessary to reduce the off-time of the pulse current.
【0023】 [0023]
【発明の効果】 【Effect of the invention】
以上詳述した如く、本発明の充電方法によれば、非水系の二次電池のパルス充電方法において、該二次電池における−40℃から+80℃の温度範囲条件に対応し、該二次電池を充電するパルス電流の1サイクル中のオフ時間を100秒間乃至1秒間の範囲から0.5秒間乃至0.0001秒間の範囲まで負の温度係数で連続的にもしくは段階的に減少変化させることで、低温時には二次電池における緩慢な化学反応に応じたゆっくりした小さな充電率で好適に充電するとともに、高温時には二次電池が対応し得る大きな充電率で急速に充電することができるものである。 As described in detail above, according to the charging method of the present invention, in the pulse charging method for secondary battery of nonaqueous, corresponding to the temperature range condition of + 80 ° C. from -40 ℃ in said secondary battery, said secondary battery continuously or by reducing changed stepwise at a negative temperature coefficient oFF time during one cycle from a range of 100 seconds to 1 second to a range of 0.5 seconds to 0.0001 seconds pulse current charging the , at low temperatures with appropriately charged by a small charging rate was slow in response to the slow chemical reactions in the secondary battery, at high temperatures are those which can be rapidly charged with a large charging rate the secondary battery may correspond.
【0024】 [0024]
また、非水系の二次電池を充電するパルス電流の1サイクル中のオン時間の比率を示すデューティ比を、二次電池の温度が低温から高温に変移するのに応じて連続的にもしくは段階的に大きくすることで、低温の二次電池にとって好適なゆっくりした小さな充電率から、高温の二次電池が対応し得る急速な大きな充電率まで、低温から高温まで各温度に対応した最適でかつ最速の充電時間で充電することができる。 Further, the duty ratio indicating the ratio of the ON time in one cycle of the pulse current charging the secondary battery of nonaqueous, continuously or stepwise the temperature of the secondary battery in response to transition from a low temperature to a high temperature by greatly enough, from a small charging rate was suitable slow for low temperature of the secondary battery, to rapid large charging rate is high temperature of the secondary battery may correspond, optimal and fastest corresponding to each temperature from a low temperature to a high temperature it can be charged in the charging time.
【0025】 [0025]
また、非水系の二次電池を充電するパルス電流の1サイクル中のオン時間をほぼ一定とするとともに、前記1サイクル中のオフ時間を、二次電池の温度が低温から高温に変移するのに応じて連続的にもしくは段階的に短くすることで、低温の二次電池にとって好適なゆっくりした小さな充電率から、高温の二次電池が対応し得る急速な大きな充電率まで、低温から高温まで連続的に各温度に対応した最適でかつ最速の充電時間で充電することができる。 Further, substantially with a constant on-time in one cycle of the pulse current charging the secondary battery of nonaqueous, the off-time during said one cycle, to a temperature of the secondary battery is displaced from a low temperature to a high temperature correspondingly the continuously or stepwise be shortened, continuously from the small charging rate was suitable slow for low temperature of the secondary battery, to rapid large charging rate is high temperature of the secondary battery may correspond, from low to high temperature it can be charged by the optimal and fastest charge time corresponding to each temperature manner.
【0026】 [0026]
したがって、本発明の充電方法によれば、低温から高温まで二次電池の周囲温度に対応し各温度での最適かつ最短の充電時間を可能とするとともに、充放電サイクルを重ねても容量保持率が低下することなく非水系二次電池の長寿命化が可能となるものである。 Therefore, according to the charging method of the present invention, with corresponding to the ambient temperature of the secondary battery from a low temperature to a high temperature to allow optimum and shortest charging time at each temperature, even if repeated charging and discharging cycle capacity retention rate There are those to realize an extended service life of the nonaqueous secondary battery without lowering.
【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS
【図1】本発明の充電方法の第1の実施例におけるパルス電流の波形図である。 1 is a waveform diagram of the pulse current in the first embodiment of the charging method of the present invention.
【図2】本発明の充電方法の第1の実施例におけるパルス電流のオフ時間の温度特性を示すグラフ図である。 2 is a graph showing the temperature characteristic of the off-time of the pulse current in the first embodiment of the charging method of the present invention.
【図3】本発明の充電方法の第1の実施例におけるオン時間をパラメータとしてオフ時間を変化させたときの充電率を示すグラフ図である。 3 is a graph showing the charging rate when changing the off time of the on-time as a parameter in the first embodiment of the charging method of the present invention.
【図4】本発明の充電方法の第2の実施例におけるパルス電流の周波数の温度特性を示すグラフ図である。 Is a graph showing the temperature characteristic of the frequency of the pulse current in the second embodiment of the charging method of the present invention; FIG.
【符号の説明】 DESCRIPTION OF SYMBOLS
1 パルス電流t(on) パルス電流のオン時間t(off) パルス電流のオフ時間 1 pulse current t (on) pulse current on-time t (off) pulse current off-time of

Claims (1)

  1. 非水系の二次電池のパルス充電方法において、該二次電池における−40℃から+80℃の温度範囲条件に対応し、該二次電池を充電するパルス電流の1サイクル中のオン時間をほぼ一定としかつ二次電池の温度が低温から高温に変移するのに応じてオフ時間を100秒間乃至1秒間の範囲から0.5秒間乃至0.0001秒間の範囲まで負の温度係数で連続的にもしくは段階的に減少変化させてデューティ比を大きくするとともに、オン時間とオフ時間の和を1周期とするパルス電流の1サイクルの周波数を−40℃で1Hzから0.01Hzの間、+80℃で10kHzから2Hzの間の範囲で正の温度係数で連続的にもしくは段階的に変化させることを特徴とする充電方法。 In the pulse method of charging a secondary battery as a nonaqueous, corresponding to the temperature range condition of + 80 ° C. from -40 ℃ in said secondary battery, the on-time in one cycle of the pulse current for charging the secondary battery substantially constant continuously or with a negative temperature coefficient of the off-time to a range of 0.5 seconds to 0.0001 seconds after the range of 100 seconds to 1 second in response to temperature change from a low temperature to a high temperature of Toshikatsu secondary battery as well as increase the duty ratio stepwise decreased change, during one cycle frequency of the pulse current to the sum of the on and off times as one cycle from 1Hz at -40 ℃ of 0.01 Hz, 10 kHz at + 80 ° C. charging method for causing continuous or stepwise changed in the positive temperature coefficient in the range between 2Hz from.
JP2325794A 1994-01-25 1994-01-25 Charging method Expired - Fee Related JP3605733B2 (en)

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JP6048278B2 (en) * 2013-03-28 2016-12-21 マツダ株式会社 Vehicle charging control device
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