JP2019068708A - Charging method of lithium ion battery correcting and compensating voltage - Google Patents
Charging method of lithium ion battery correcting and compensating voltage Download PDFInfo
- Publication number
- JP2019068708A JP2019068708A JP2018056321A JP2018056321A JP2019068708A JP 2019068708 A JP2019068708 A JP 2019068708A JP 2018056321 A JP2018056321 A JP 2018056321A JP 2018056321 A JP2018056321 A JP 2018056321A JP 2019068708 A JP2019068708 A JP 2019068708A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- charging
- battery
- constant
- charge
- 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.)
- Granted
Links
- 238000007600 charging Methods 0.000 title claims abstract description 154
- 238000000034 method Methods 0.000 title claims abstract description 105
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 59
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 58
- 238000010280 constant potential charging Methods 0.000 claims abstract description 47
- 238000010277 constant-current charging Methods 0.000 claims description 34
- 229910052744 lithium Inorganic materials 0.000 claims description 20
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical group [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 19
- 230000008859 change Effects 0.000 claims description 16
- 238000010281 constant-current constant-voltage charging Methods 0.000 claims description 6
- 230000000052 comparative effect Effects 0.000 description 22
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 description 12
- 238000005259 measurement Methods 0.000 description 8
- 210000004027 cell Anatomy 0.000 description 5
- 238000007599 discharging Methods 0.000 description 5
- 229940085991 phosphate ion Drugs 0.000 description 5
- 238000012937 correction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 210000003771 C cell Anatomy 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 229920006395 saturated elastomer Polymers 0.000 description 3
- 229910012851 LiCoO 2 Inorganic materials 0.000 description 2
- 238000003795 desorption Methods 0.000 description 2
- 229910000625 lithium cobalt oxide Inorganic materials 0.000 description 2
- BFZPBUKRYWOWDV-UHFFFAOYSA-N lithium;oxido(oxo)cobalt Chemical compound [Li+].[O-][Co]=O BFZPBUKRYWOWDV-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 229910010707 LiFePO 4 Inorganic materials 0.000 description 1
- NCZYUKGXRHBAHE-UHFFFAOYSA-K [Li+].P(=O)([O-])([O-])[O-].[Fe+2].[Li+] Chemical compound [Li+].P(=O)([O-])([O-])[O-].[Fe+2].[Li+] NCZYUKGXRHBAHE-UHFFFAOYSA-K 0.000 description 1
- SOXUFMZTHZXOGC-UHFFFAOYSA-N [Li].[Mn].[Co].[Ni] Chemical compound [Li].[Mn].[Co].[Ni] SOXUFMZTHZXOGC-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- QHGJSLXSVXVKHZ-UHFFFAOYSA-N dilithium;dioxido(dioxo)manganese Chemical compound [Li+].[Li+].[O-][Mn]([O-])(=O)=O QHGJSLXSVXVKHZ-UHFFFAOYSA-N 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- -1 lithium titanate ion Chemical class 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/0071—Regulation of charging or discharging current or voltage with a programmable schedule
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/52—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron
- H01M4/525—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
- H02J7/007182—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage
-
- 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
Abstract
Description
本発明は、電池の充電方法技術分野に属し、特にリチウムイオン電池とポリマーリチウムイオン電池の充電方法を開示するものである。 The present invention belongs to the technical field of battery charging methods, and in particular discloses a method of charging lithium ion batteries and polymer lithium ion batteries.
中国の特許ＣＮ１０１３８８４７７Ｂには、充電上限電圧を増加することによって、電池内部の電圧降下を補償するリチウムイオン電池の充電方法である急速充電方法が開示され、該リチウムイオン電池やポリマーリチウムイオン電池が充電されるとき、電池が充電上限電圧まで充電されると電池は充電を停止し、電池の両極における充電上限電圧はＵ＝２Ｕｏ−Ｕｓに設定され、Ｕｓは、定電流でＵｏまで充電した後の電圧が降下した標準安定電圧であり、Ｕｏは、通常産業界で受け入れられる小倍率の定電流−定電圧充電方式により使用される通常の充電終止電圧である。安定電圧Ｕｓは、電池の定電流充電が停止され、放置が始まった時点から計時し、ある時間帯の開始から、電池の開路電圧の降下が、ある時間帯内においてある値よりも小さくなり、即ち電池の電圧が安定になった時間帯の第一時点と対応する電圧が、電池の標準安定電圧Ｕｓとして選択される。 Chinese patent CN101388477B discloses a rapid charging method which is a charging method of a lithium ion battery that compensates for the voltage drop inside the battery by increasing the charging upper limit voltage, and the lithium ion battery and the polymer lithium ion battery are charged When the battery is charged to the charging upper limit voltage, the battery stops charging, the charging upper limit voltage at both ends of the battery is set to U = 2 Uo-Us, and Us is after charging to Uo with constant current. Uo is the normal charge termination voltage used by the industry-accepted low magnification constant current-constant voltage charging scheme, which is a standard stable voltage with a dropped voltage. The stable voltage Us is measured from the time when the constant current charging of the battery is stopped and the leaving starts, and the drop of the open circuit voltage of the battery becomes smaller than a certain value within a certain time zone from the start of the certain time zone, That is, the voltage corresponding to the first time point of the time zone in which the voltage of the battery is stabilized is selected as the standard stable voltage Us of the battery.
該方法がリン酸鉄リチウム電池に応用される際に、Ｕｏは、通常産業界で受け入れられる小倍率の定電流−定電圧充電方式に採用される標準的充電終止電圧の３．６０Ｖであり、電池を充電上限電圧Ｕ＝２Ｕｏ−Ｕｓまで充電したが、飽和状態に充電することができず、８８％程度であり、電池の機能を十分に発揮できなかった。リン酸鉄リチウム電池産業界で受け入れられる小倍率の定電流−定電圧充電方式に採用される標準的充電終止電圧Ｕｏは、さらに、３．５０Ｖ、３．６５Ｖや３．７Ｖとしてもよく、電池を充電上限電圧Ｕ＝２Ｕｏ−Ｕｓまで充電したが、いずれも電池を飽和状態に充電することができず、電池の機能を十分に発揮できなかった。 When the method is applied to lithium iron phosphate cells, Uo is 3.60 V of the standard charge termination voltage that is usually adopted in the industry accepted small constant current-constant voltage charging system, Although the battery was charged to the charging upper limit voltage U = 2 Uo-Us, it could not be charged to the saturation state, and it was about 88%, so that the battery function could not be sufficiently exhibited. The standard charge termination voltage Uo adopted for the small magnification constant current-constant voltage charge system accepted by lithium iron phosphate battery industry may be 3.50 V, 3.65 V or 3.7 V, Were charged to the charging upper limit voltage U = 2 Uo-Us, but none of them could charge the battery in a saturated state, so that the battery function could not be sufficiently exhibited.
該方法がコバルト酸リチウム電池に応用される際に、Ｕｏは、通常産業界で受け入れられる小倍率の定電流−定電圧充電方式に採用される標準的終止電圧の４．２０Ｖであり、電池を充電上限電圧Ｕ＝２Ｕｏ−Ｕｓまで充電したが、飽和状態に充電することができず、９７％程度であり、電池の機能を十分に発揮できなかった。 When the method is applied to lithium cobaltate batteries, Uo is the standard termination voltage of 4.20 V usually employed in industry accepted small magnification constant current-constant voltage charging system, Although charging was performed to the charging upper limit voltage U = 2 Uo-Us, it could not be charged to the saturation state, and it was about 97%, and the function of the battery could not be sufficiently exhibited.
電池の機能を十分に発揮するためには、電池の充電上限電圧に対して、適当な修正が必要となった。 In order to make full use of the function of the battery, it is necessary to make an appropriate correction to the charging upper limit voltage of the battery.
本発明は、電池の機能を十分に発揮するために、電圧を修正・補償するリチウムイオン電池の充電方法を提供することを目的とする。
定義
理想的充電は、定電流・定電圧充電方式でリチウムイオン電池を充電する場合は、充電回路を切断した後に、リチウムイオン電池の開回路の安定電圧が定電圧充電の電圧に達するようになるものである。理論的には、定電流・定電圧充電方式でリチウムイオン電池を充電する場合は、定電圧で無限小電流になるまで充電された時に、充電回路を切断した後において、リチウムイオン電池の開回路の安定電圧は定電圧充電の電圧に達することができる。実際的に、定電流・定電圧充電方式でリチウムイオン電池を充電する場合は、定電圧でリチウムイオン電池が自己消費電流になるまで充電された時に、リチウムイオン電池の充電電流と自己消費電流は動的平衡状態にあるので、充電回路を切断した後において、リチウムイオン電池の開回路の安定電圧は定電圧充電の電圧に極めて近くなる。標準安定電圧は、標準によって規定した、或いはサプライヤと合意した電流を定電流として、Ｕｏまで充電した後、標準によって規定した、或いはサプライヤと合意した終止電流まで、定電圧で充電してから停止し、電池の定電流・定電圧充電が停止され、放置が始まった時点から計時し、ある時間帯の開始から、電池の開路電圧の降下が、ある時間帯内おいてある値よりも小さくなり、電池の電圧が安定になった場合に、この時間帯の第一時点と対応する電圧が電池の標準安定電圧Ｕｓｏとして選択される。
An object of the present invention is to provide a method of charging a lithium ion battery in which the voltage is corrected and compensated in order to fully exhibit the function of the battery.
Definition The ideal charge is that when charging a lithium ion battery with constant current and constant voltage charging, the open circuit of the lithium ion battery will reach the constant voltage charging voltage after disconnecting the charging circuit. It is a thing. Theoretically, in the case of charging a lithium ion battery by a constant current / constant voltage charging method, the open circuit of the lithium ion battery after cutting the charging circuit when charging to an infinitesimally small current with a constant voltage The stable voltage of can reach the voltage of constant voltage charge. In practice, when charging a lithium ion battery by a constant current / constant voltage charging method, when the lithium ion battery is charged to a self consumption current by a constant voltage, the charging current and the consumption current of the lithium ion battery are Being in a dynamic equilibrium state, after disconnecting the charging circuit, the open circuit of the lithium ion battery becomes very close to the constant voltage charging voltage. The standard stable voltage is charged up to Uo after charging to Uo with a current specified by the standard or agreed with the supplier as a constant current, then charged with a constant voltage to a termination current agreed with the standard or agreed with the supplier and then stopped. The constant current and constant voltage charging of the battery is stopped, counting from the start of leaving, the drop of the open circuit voltage of the battery from the start of a certain time zone becomes smaller than a certain value within a certain time zone, When the voltage of the battery becomes stable, the voltage corresponding to the first time point of this time zone is selected as the standard stable voltage Uso of the battery.
リチウムイオンの自由度は、リチウムイオンが正極で自由に運動する程度を表す。充電中に、リチウムイオン電池は、リチウムイオンが正極から脱離し、電解質を通じて、負極に嵌入される。リチウムイオンは正極の結晶格子の中で自由に分布し、各自の適する位置を見つけ、脱離過程において、近くにある大自由度のリチウムイオンは先に脱離し、遠くにある小自由度のリチウムイオンはその後に脱離するが、正極に厳密に結ばれたリチウムイオンの自由度は極めて低いため、脱離しにくい。自由度の低いリチウムイオンを脱離させるようにするには、より大きな充電パワーが必要となっている。 The degree of freedom of lithium ion represents the degree to which lithium ion moves freely on the positive electrode. During charging, in a lithium ion battery, lithium ions are desorbed from the positive electrode and inserted into the negative electrode through the electrolyte. The lithium ions are freely distributed in the crystal lattice of the positive electrode, find their own suitable position, and in the desorption process, the lithium ions in the vicinity with a large degree of freedom are desorbed first, and the lithium in a small degree of freedom far away Although the ions are subsequently desorbed, the degree of freedom of lithium ions strictly bound to the positive electrode is so low that they are difficult to desorb. In order to desorb lithium ions having a low degree of freedom, higher charging power is required.
原理
ＣＮ１０１３８８４７７Ｂにおける充電方法では、Ｕ＝２Ｕｏ−Ｕｓ＝Ｕｏ＋（Ｕｏ−Ｕｓ）に充電すると停止することで、定電流ＩでＵｏまで充電した後に、開回路として放置して生じる電池内部の電圧降下（Ｕｏ−Ｕｓ）を補償した。しかし、電流Ｉと対応するオーム電圧降下、濃度分極電圧降下、電気化学分極電圧降下とその他のインピーダンス電圧降下のみが補償可能であり、定電流ＩでＵｏまで充電しても飽和状態にならないことと、リチウムイオンにおける自由度が極めて低い一部の脱離を考慮しておらず、補償した電圧降下は電池を１００％の飽和状態まで充電するには不十分で、理想的充電状態に達することはできない他、ＣＮ１０１３８８４７７Ｂの充電方法では設備の誤差と測定の誤差による影響も考えていなかった。１００％の飽和状態は、標準によって規定した、或いはサプライヤと合意した電流を定電流として、Ｕｏまで充電した後、標準によって規定した、或いはサプライヤと合意した終止電流まで定電圧で充電して停止し、標準によって規定した、或いはサプライヤと合意した電流を採用して、標準によって規定した、或いはサプライヤと合意した放電終止電圧まで定電流で放電すると、放出した容量は１００％に達し、放電前の充電状態が１００％の飽和状態である。Ｕ＝２Ｕｏ−Ｕｓ＝Ｕｏ＋（Ｕｏ−Ｕｓ）に基づいて、（Ｕｏ−Ｕｓｏ）分を追加し、電流ＩでＵ＝Ｕｏ＋（Ｕｏ−Ｕｓ）＋（Ｕｏ−Ｕｓｏ）＝３Ｕｏ−Ｕｓ−Ｕｓｏまで充電することは、リチウムイオンの自由度が低い一部の脱離を考え、それにより電池を１００％の飽和状態により近いように充電可能であり、設備の誤差と測定の誤差による影響を削減し、理想的な充電状態により近くなる。
Principle In CN101388477B, the charging method in U = 2Uo-Us = Uo + (Uo-Us) stops when charging to Uo with constant current I, and then the voltage drop inside the battery caused by leaving it as an open circuit ( Uo-Us) was compensated. However, only the current I and the corresponding ohmic voltage drop, concentration polarization voltage drop, electrochemical polarization voltage drop and other impedance voltage drops can be compensated, and they will not be saturated even if they are charged to Uo with constant current I. The lithium ion does not take into account some desorption with very low degree of freedom, the compensated voltage drop is not enough to charge the battery to 100% saturation and it is not possible to reach the ideal state of charge Other than that, the charging method of CN101388477B did not consider the effects of equipment errors and measurement errors. 100% saturation condition is stopped after charging to Uo with constant current specified by the standard or agreed with the supplier and then charged with constant voltage to the termination current agreed with the standard or agreed with the supplier Discharging with constant current up to the discharge termination voltage specified by the standard or agreed with the supplier, adopting the current prescribed by the standard or agreed with the supplier, the capacity released reaches 100%, and charging before discharge The state is 100% saturated. Add (Uo-Uso) minutes based on U = 2 Uo-Us = Uo + (Uo-Us), and with current I up to U = Uo + (Uo-Us) + (Uo-Uso) = 3 Uo-Us-Uso Charging allows for the partial elimination of lithium ions with a low degree of freedom, which allows the battery to be charged closer to 100% saturation, reducing the effects of equipment errors and measurement errors. , Get closer to the ideal state of charge.
本発明は上記課題を解決するために、下記技術手段を採用する。 The present invention adopts the following technical means in order to solve the above-mentioned problems.
標準的定電流・定電圧充電方式を使用して、電池を飽和状態まで充電し、開回路とする場合において、リン酸鉄リチウムイオン電池の標準安定電圧と、標準的充電終止電圧とは大きく違っており、コバルト酸リチウム電池の標準安定電圧と、標準的充電終止電圧とは小さく違っていることが示され、これはリン酸鉄リチウムイオン電池の飽和程度が低いが、コバルト酸リチウム電池の飽和程度が高いということに直接的に関連する。 When charging the battery to saturation using the standard constant current / constant voltage charging method and making the open circuit, the standard stable voltage of the lithium iron phosphate ion battery and the standard charging end voltage are significantly different. It is shown that the standard stable voltage of lithium cobaltate battery and the standard end of charge voltage are slightly different, which is less saturation of lithium iron phosphate ion battery but the saturation of lithium cobaltate battery Directly related to the high degree.
電池の機能を十分に発揮するためには、電池を飽和状態まで充電する毎に、本来のＵ＝Ｕｏ＋（Ｕｏ−Ｕｓ）を基礎に、（Ｕｏ−Ｕｓｏ）という修正値の追加が必要となり、修正・ 補償した電圧は、
Ｕ＝Ｕｏ＋（Ｕｏ−Ｕｓ）＋（Ｕｏ−Ｕｓｏ）＝３Ｕｏ−Ｕｓ−Ｕｓｏ
となる。これによると、リン酸鉄リチウムイオン電池とコバルト酸リチウム電池を充電する場合に、修正・補償した電圧によって、電池を１００％の飽和状態により近いように充電可能になった。
In order to fully demonstrate the function of the battery, it is necessary to add a correction value of (Uo-Uso) based on the original U = Uo + (Uo-Us) every time the battery is charged to saturation. The corrected and compensated voltage is
U = Uo + (Uo-Us) + (Uo-Uso) = 3 Uo-Us-Uso
It becomes. According to this, when charging a lithium iron phosphate ion battery and a lithium cobaltate battery, the corrected and compensated voltage makes it possible to charge the battery closer to 100% saturation.
三元系リチウムイオン電池、マンガン酸リチウムイオン電池、チタン酸リチウムイオン電池に対して、同じ方法で検証を行えば、同じ効果を有することが分かる。 It will be understood that the same effect can be obtained if the verification is performed on the ternary lithium ion battery, the lithium manganate ion battery, and the lithium titanate ion battery by the same method.
電圧を修正・補償するリチウムイオン電池の充電方法は、電池が充電される時、電池が充電上限電圧Ｕまで充電されると電池は定電圧充電方式に変更し、充電電流が定電圧充電方式の前の電流の５％〜９９．９９％下がった時に終了し、電池の充電上限電圧は、Ｕ＝３Ｕｏ−Ｕｓ−Ｕｓｏである。 When the battery is charged, when the battery is charged up to the charging upper limit voltage U, the battery is changed to a constant voltage charging system, and the charging current is a constant voltage charging system. It ends when 5% to 99.99% of the previous current is dropped, and the battery's upper charging limit voltage is U = 3 Uo-Us-Uso.
電圧を修正・補償するリチウムイオン電池の充電方法は、電池が充電される時、電池が充電上限電圧Ｕまで充電されると電池は定電圧充電方式に変更し、充電電流が定電圧充電方式の前の電流の５０％〜９９．９９％下がった時に終了し、電池の両極における充電上限電圧は、Ｕ＝３Ｕｏ−Ｕｓ−Ｕｓｏである。 When the battery is charged, when the battery is charged up to the charging upper limit voltage U, the battery is changed to a constant voltage charging system, and the charging current is a constant voltage charging system. It ends when 50% to 99.99% of the previous current is dropped, and the charge upper limit voltage at both poles of the battery is U = 3 Uo-Us-Uso.
Ｕｓｏは定電流・定電圧でＵｏまで充電した後の電圧が降下した標準安定電圧であり、Ｕｓは定電流でＵｏまで充電した後の電圧が降下した安定電圧であり、Ｕｏは標準的充電終止電圧である。 Uso is a standard stable voltage where the voltage drops after charging to Uo with constant current and constant voltage, Us is a stable voltage where the voltage drops after charging to Uo with constant current, and Uo is a standard charge termination It is a voltage.
Ｕｓｏは定電流・定電圧でＵｏまで充電した後、電圧が降下した標準安定電圧であり、その値は、電池に定電流・定電圧充電を停止し、放置が始まった時、ある時間帯Ｔｕｓｏが開始して、電池の開路電圧降下が、ある時間帯Ｔｕｓｏ内である値よりも小さくなり、電池の電圧が安定になる場合、この時間帯Ｔｕｓｏの第一時点と対応する電圧は電池の安定電圧Ｕｓｏとして選択されることが考えられる。 Uso is a standard stable voltage in which the voltage drops after charging to Uo with constant current and constant voltage, and the value indicates that the constant current and constant voltage charging has been stopped in the battery, and when it has started to be left, a certain time zone Tuso When the open circuit voltage drop of the battery becomes smaller than a value within a certain time zone Tuso and the voltage of the battery becomes stable, the voltage corresponding to the first time point of this time zone Tuso becomes stable of the battery. It is conceivable that the voltage Uso is selected.
具体的には、標準によって規定した、或いはサプライヤと合意した電流を定電流として、Ｕｏまで充電した後、標準によって規定した、或いはサプライヤと合意した終止電流まで定電圧方式で充電した後に電池は充電を停止する。電池に定電流・定電圧充電が停止され、放置が始まった時点から計時し、ある時間帯Ｔｕｓｏが開始して、電池の開路電圧降下が、ある時間帯Ｔｕｓｏ内である値よりも小さくなり、電池の電圧が安定になる場合、この時間帯Ｔｕｓｏの第一時点と対応する電圧は電池の標準安定電圧Ｕｓｏとして選択される。 Specifically, after charging up to Uo with the current specified by the standard or agreed with the supplier as a constant current, the battery is charged after charging by the constant voltage method until the termination current prescribed by the standard or agreed with the supplier Stop. The constant current / constant voltage charging to the battery is stopped, counting from the point when leaving starts, a certain time period Tuso starts, and the open circuit voltage drop of the battery becomes smaller than the value within the certain time zone Tuso, If the voltage of the battery becomes stable, the voltage corresponding to the first point in time zone Tuso is selected as the standard stable voltage Uso of the battery.
Ｕｓは、定電流でＵｏまで充電した後に電池の電圧が降下する安定電圧であって、電池に定電流充電を停止し、放置が始まった時点から計時し、ある時間帯Ｔｕｓが開始して、電池の開路電圧降下が、ある時間帯Ｔｕｓ内である値よりも小さくなり、電池の電圧が安定になる場合、この時間帯Ｔｕｓの第一時点と対応する電圧は電池の安定電圧Ｕｓとして選択されることが考えられる。 Us is a stable voltage at which the voltage of the battery drops after being charged to Uo with a constant current, and the constant current charging to the battery is stopped, clocking is performed from the point when leaving starts, and a certain time zone Tus starts When the open circuit voltage drop of the battery is smaller than a value within a certain time zone Tus and the voltage of the battery becomes stable, the voltage corresponding to the first time of this time zone Tus is selected as the stable voltage Us of the battery It is conceivable that
Ｕｏは、通常産業界で受け入れられる小倍率の定電流−定電圧充電方式により使用される通常の充電終止電圧である。改善した技術様態として、本発明の電圧を修正・補償するリチウムイオン電池の充電方法は、定電流充電方式で電池をＵ＝３Ｕｏ−Ｕｓ−Ｕｓｏまで充電した後に、充電を停止することができる。 Uo is the normal charge termination voltage used by the industry accepted small magnification constant current-constant voltage charging scheme. As an improved technical aspect, the method of charging and recharging a lithium ion battery according to the present invention can stop charging after charging the battery to U = 3 Uo-Us-Uso by a constant current charging method.
その他の改善した技術様態として、本発明の電圧を修正・補償するリチウムイオン電池の非定電圧充電方法は、電池を多段定電流充電方式で充電し、Ｕ＝３Ｕｏ−Ｕｓ−Ｕｓｏに達すると、定電圧充電方式に変更し、充電電流が定電圧充電方式の前の電流の５０％〜９９．９９％下がった後に、充電を終了することができ、Ｕｓは充電を停止する直前の電流を測定したものとすることができる。 As another improved technical aspect, the non-constant voltage charging method of a lithium ion battery according to the present invention which corrects and compensates the voltage of the present invention charges the battery by multistage constant current charging method and reaches U = 3 Uo-Us-Uso After changing to the constant voltage charging method and charging current drops 50% to 99.99% of the current before constant voltage charging method, charging can be terminated, and Us measures the current just before stopping charging It can be done.
その他の改善した技術様態として、本発明の電圧を修正・補償するリチウムイオン電池の非定電圧充電方法は、電池を非定電流充電方式で充電し、Ｕ＝３Ｕｏ−Ｕｓ−Ｕｓｏに達すると定電圧充電方式に変更し、充電電流が定電圧充電方式の前の電流の５０％〜９９．９９％下がった後に、充電を終了することができ、Ｕｓは充電を停止する直前の電流を測定してものとすることができる。 As another improved technical aspect, the non-constant voltage charging method of a lithium ion battery according to the present invention for correcting and compensating the voltage according to the present invention charges the battery by non-constant current charging and is constant when U = 3 Uo-Us-Uso is reached. After changing to voltage charging mode and charging current drops 50% to 99.99% of the current before constant voltage charging mode, charging can be finished, and Us measure the current just before stopping charging It can be done.
Ｕｓｏの測定方法として、電圧を修正・補償するリチウムイオン電池の充電方法は、電池に定電流・定電圧充電を停止し、放置が始まった時点から計時し、各５分を一つの時間帯として、ある時間帯Ｔ５が開始して、５分の時間帯Ｔ５内で電池の開路電圧降下が２ｍＶよりも小さくなった後に、電池の電圧が安定になったと認め、この時間帯Ｔ５の第一時点と対応する電圧は、電池の標準安定電圧Ｕｓｏとして選択される。 As a measuring method of Uso, the charging method of the lithium ion battery which corrects and compensates the voltage stops the constant current and constant voltage charging to the battery, counts from the time when leaving starts, and takes 5 minutes each as one time zone After the open circuit voltage drop of the battery becomes smaller than 2mV within the 5-minute time period T5 after a certain time period T5 starts, it is recognized that the voltage of the battery becomes stable, and the first time point of this time period T5 And the corresponding voltage is selected as the battery's standard stable voltage Uso.
Ｕｓｏのもう一つの測定方法として、電圧を修正・補償するリチウムイオン電池の充電方法は、電池に定電流・定電圧充電を停止し、放置が始まった時点から計時し、各１０分を一つの時間帯として、ある１０分の時間帯Ｔ１０が開始して、１０分の時間帯Ｔ１０内で電池の開路電圧降下が１ｍＶよりも小さくなった後に、電池の電圧が安定になったと認め、この時間帯Ｔ１０の第一時点と対応する電圧は、電池の標準安定電圧Ｕｓｏとして選択される。 As another measurement method of Uso, the charging method of the lithium ion battery which corrects and compensates the voltage stops the constant current and constant voltage charging to the battery, counts from the time when leaving starts, and 10 minutes each is one As a time zone, it is recognized that the voltage of the battery becomes stable after the open window voltage drop of the battery becomes smaller than 1 mV within the time zone T10 after a certain 10 minute time zone T10 starts. The voltage corresponding to the first point in time of band T10 is selected as the standard stable voltage Uso of the battery.
Ｕｓの測定方法として、Ｕｓの値は、電池に定電流充電を停止し、放置が始まった時点から計時し、ある時間帯Ｔｕｓ’が開始して、電池の開路電圧降下が、ある時間帯Ｔｕｓ’内である値よりも小さくなり、即ち電池の電圧が安定になった時間帯Ｔｕｓ’の第一時点と対応する電圧は、電池の安定電圧Ｕｓとして選択される。 As a measurement method of Us, the value of Us stops constant current charging to the battery, counts from the point when leaving starts, certain time zone Tus' starts, and the open circuit voltage drop of the battery takes some time Tus The voltage corresponding to the first point in time period Tus ′ in which the voltage of the battery becomes stable, which is smaller than the value within ', is selected as the battery stable voltage Us.
Ｕｏは、通常産業界で受け入れられる小倍率の定電流−定電圧充電方式に採用された充電終止電圧である。
電池がコバルト酸リチウム電池であり、且つＵｏ＝４．２Ｖである場合は、
まで充電した後に、充電を停止する。
Uo is a charge termination voltage employed in a low magnification constant current-constant voltage charging system generally accepted in the industry.
If the battery is a lithium cobaltate battery and Uo = 4.2 V, then
After charging up, stop charging.
明確にすべきことは、標準安定電圧Ｕｓｏと標準的充電終止電圧Ｕｏや標準的充電終止電流とは関連しているが、充電倍率とは少しのみ、或いは全く関連しない。 What should be clarified is that although the standard stable voltage Uso is related to the standard charge termination voltage Uo and the standard charge termination current, it has little or no relation to the charge ratio.
広く知られているのは、リン酸鉄リチウム電池の標準的充電終止電圧Ｕｏは、３．５Ｖ、３．６Ｖ、３．６５Ｖや３．７Ｖとしてもよく、異なるＵｏに応じて、異なる標準的容量Ｃｏを得る。標準的容量は、標準によって規定した、或いはサプライヤと合意した電流を定電流として、Ｕｏまで充電した後、標準によって規定した、或いはサプライヤと合意した終止電流まで定電圧で充電し、次に標準によって規定した、或いはサプライヤと合意した放電電流を採用して、標準によって規定した、或いはサプライヤと合意した放電終止電圧まで放電させると、放出した容量は標準的容量Ｃｏとなるように定義される。リン酸鉄リチウムイオン電池の標準的充電終止電圧Ｕｏは、何れかの公知の値を選択してもよいが、急速充電の場合、標準的容量Ｃｏに近づく容量を急速に充填するためには、全部に修正・補償した電圧がＵ＝Ｕｏ＋（Ｕｏ−Ｕｓ）＋（Ｕｏ−Ｕｓｏ）＝３Ｕｏ−Ｕｓ−Ｕｓｏである充電方法を適用できる。 It is widely known that the standard charge termination voltage Uo of lithium iron phosphate batteries may be 3.5V, 3.6V, 3.65V or 3.7V, and different standard according to different Uo Get the capacity Co. The standard capacity is charged up to Uo after charging to Uo with a constant current specified by the standard or agreed with the supplier, then charged with a constant voltage to a termination current agreed with the standard or agreed with the supplier, then by the standard The discharge capacity is defined to be the standard capacity Co when discharging to a discharge termination voltage defined by a standard or agreed with a supplier by adopting a regulated or agreed with a supplier. The standard charge termination voltage Uo of the lithium iron phosphate battery may be selected from any known value, but in the case of quick charge, in order to rapidly charge the capacity approaching the standard capacity Co, It is possible to apply a charging method in which the voltage corrected and compensated entirely is U = Uo + (Uo-Us) + (Uo-Uso) = 3 Uo-Us-Uso.
広く知られているのは、コバルト酸リチウム電池に対して、従来の伝統的な標準的充電終止電圧Ｕｏは、４．２Ｖで、今まで４．３Ｖと４．３５Ｖの高電圧を持つコバルト酸リチウム電池が開発されるとともに、４．４Ｖと４．５Ｖの高電圧型コバルト酸リチウム電池も開発中で、それらが対応する標準的充電終止電圧Ｕｏは、４．３Ｖ、４．３５Ｖ、４．４Ｖ、４．５Ｖとなり、異なるＵｏから異なった標準的容量Ｃｏを得る。異なる電圧を持つコバルト酸リチウム電池の標準的充電終止電圧Ｕｏは、対応する公知の値を選択してもよいが、急速充電の場合、標準的容量Ｃｏに近づく容量を急速に充填するためには、全部に修正・補償した電圧がＵ＝Ｕｏ＋（Ｕｏ−Ｕｓ）＋（Ｕｏ−Ｕｓｏ）＝３Ｕｏ−Ｕｓ−Ｕｓｏである充電方法を適用できる。 It is widely known that, for lithium cobaltate cells, the traditional traditional standard charge termination voltage Uo is 4.2 V, cobalt acid with 4.3 V and 4.35 V high voltage so far As lithium batteries are being developed, 4.4V and 4.5V high voltage lithium cobaltate batteries are also being developed, and their corresponding standard end-of-charge voltages Uo are: 4.3V, 4.35V, 4. It will be 4 V, 4.5 V, and different standard capacitance Co will be obtained from different Uo. The standard end-of-charge voltage Uo of lithium cobaltate cells with different voltages may be selected from the corresponding known values, but in the case of rapid charging it is possible to rapidly fill the capacity approaching the standard capacity Co. The charging method in which the voltage corrected and compensated U = Uo + (Uo-Us) + (Uo-Uso) = 3Uo-Us-Uso can be applied to all.
広く知られているのは、三元系リチウムイオン電池（ニッケル・マンガン・コバルト酸リチウム電池）に対して、従来の伝統的な標準的充電終止電圧Ｕｏは、４．２Ｖで、今まで４．３Ｖと４．３５Ｖの高電圧を持つ三元系リチウムイオン電池は開発中で、それらが対応する標準的充電終止電圧Ｕｏは、４．３Ｖ、４．３５Ｖとなり、異なるＵｏから異なった標準的容量Ｃｏを得る。異なる電圧を持つ三元系リチウムイオン電池の標準的充電終止電圧Ｕｏは、対応の公知の値を選択してもよいが、急速充電の場合、標準的容量Ｃｏに近づく容量を急速に充填するためには、全部に修正・補償した電圧がＵ＝Ｕｏ＋（Ｕｏ−Ｕｓ）＋（Ｕｏ−Ｕｓｏ）＝３Ｕｏ−Ｕｓ−Ｕｓｏである充電方法を適用できる。 It is widely known that, compared to ternary lithium ion batteries (nickel-manganese-cobalt-lithium batteries), the conventional traditional standard charge termination voltage Uo is 4.2 V, so far. Ternary lithium ion batteries with 3V and 4.35V high voltage are under development, and their corresponding standard charge termination voltage Uo is 4.3V, 4.35V, different standard capacity from different Uo Get Co. The standard charge termination voltage Uo of the ternary lithium ion battery with different voltage may select the corresponding known value, but in the case of quick charge, to rapidly charge the capacity approaching the standard capacity Co The charging method in which the voltage corrected and compensated U = Uo + (Uo-Us) + (Uo-Uso) = 3Uo-Us-Uso can be applied to all.
特別な例では、コバルト酸リチウム電池のＵｏ＝４．２Ｖ（図２に示すように）として、
まで充電して停止すれば、定電流・定電圧で４．２Ｖまで充電する方法と、ほぼ同じ効果を取得することができ、すなわち、コバルト酸リチウム電池のＵｏ＝４．２Ｖである場合は、（Ｕｏ−Ｕｓｏ）修正値を無視してもよい。しかしながら、他の標準的充電終止電圧Ｕｏであれば、図３に示すように、Ｕｏ＝４．３５Ｖで、ＵｏとＵｓｏとの誤差は比較的に大きく、修正値の（Ｕｏ−Ｕｓｏ）を考慮することで、電池を１００％に充電可能である。
In a particular example, as Uo = 4.2 V (as shown in FIG. 2) of a lithium cobaltate battery,
By charging up to and stopping, it is possible to obtain almost the same effect as the method of charging up to 4.2 V with constant current and constant voltage, ie, when Uo = 4.2 V of lithium cobaltate battery, (Uo-Uso) The correction value may be ignored. However, in the case of other standard charge termination voltage Uo, as shown in FIG. 3, the error between Uo and Uso is relatively large at Uo = 4.35 V, and the correction value (Uo-Uso) is taken into account. By doing this, the battery can be charged to 100%.
従来の充電方法と比較すると、本発明は、
１．リチウムイオン電池は急速な充電、及び飽和状態に接近する電気量の充電を実現できること、
２．本発明の充電方法は様々なリチウムイオン電池に対する充電に適用可能で、電池を１００％の飽和状態により近く充電することができ、電池の機能を十分に発揮できることと、
３．本発明の方法でリチウムイオン電池を充電する場合、標準的又はユーザによる方法での放電は、同等な倍率の電流による定電流・定電圧充電方式と比べて、より長いサイクル寿命、又は同じサイクル回数を有し、本発明の方法による充電は、放出する電気容量がより大きいことと、
４．本発明の方法は、充電回路の設計、及び充電器を製造するために使用されることができることと、
５．本発明の方法は、共に使用されるための電池で組み立てられる電子コンポーネントを製造するために使用されることができること、
６．本発明の方法は定電圧充電方式を利用することができるので、リチウムイオン電池ユーザの充電習慣や充電式集積回路の使用と適合することと、
７．本発明の方法は、定電圧充電方式で、ある電流の値まで充電した後に終了することができ、より実現しやすいこと、を含む有益な効果を有する。
Compared to conventional charging methods, the present invention
1. Lithium-ion batteries can realize rapid charging and charging of electric quantities approaching saturation,
2. The charging method of the present invention is applicable to charging of various lithium ion batteries, can charge the battery closer to 100% saturation, and can fully exhibit the function of the battery.
3. When charging a lithium ion battery according to the method of the present invention, the discharge in a standard or user method has a longer cycle life, or the same number of cycles, as compared to a constant current, constant voltage charging system with equivalent magnification current The charge according to the method of the present invention has a higher discharge capacity and
4. The method of the present invention can be used to design a charging circuit and to manufacture a charger.
5. The method of the invention can be used to manufacture battery-assembled electronic components to be used together.
6. Because the method of the present invention can utilize a constant voltage charging scheme, it is compatible with the charging habits of lithium ion battery users and the use of rechargeable integrated circuits;
7. The method of the present invention has beneficial effects including that it can be terminated after charging up to a certain current value with a constant voltage charging scheme, which is easier to realize.
以下、本発明の具体的実施の形態と利点を反映するために、実施例と比較例を参照しながら、本発明を詳細に説明する。 Hereinafter, the present invention will be described in detail with reference to Examples and Comparative Examples in order to reflect specific embodiments and advantages of the present invention.
比較例１．１：リン酸鉄リチウムイオン電池、標準的充電方法 Comparative Example 1.1: Lithium iron phosphate battery, standard charging method
４０２０４５Ｆｅ１５Ｃは３．２Ｖ１９０ｍＡｈの高倍率型リン酸鉄リチウム電池であり、電池システムはＬｉＦｅＰＯ４／Ｃ系単電池（Ｕｏ＝３．６Ｃ）、定格容量Ｃｒ＝１９０ｍＡｈであり、ＧＢ／Ｔ１８２８７−２０１３の標準的充電方法を参照する。 402045 Fe15C is a 3.2 V 190 mAh high-magnification lithium iron phosphate battery, the battery system is LiFePO 4 / C cells (Uo = 3.6 C), rated capacity Cr = 190 mAh, and is standard for GB / T 18287-2013 Refer to the charging method.
１．３８ｍＡ（０．２Ｃ）の定電流で３．６Ｖまで充電し、３．６Ｖの定電圧に変更して、電流が３．８ｍＡ（０．０２Ｃ）に下がるまで充電した後に、充電を停止し、充電時間Ｔｃと充電容量Ｃｃを記録する。
２．３８ｍＡ（０．２Ｃ）の定電流で２．０Ｖまで放電し、放電容量Ｃｄを記録する。（このステップは、充電を評価するために放出する容量で、充電方法には必要ないものである。）
３．サイクル：
３．１ １１４０ｍＡの定電流で３．６Ｖまで充電し、３．６Ｖの定電圧に変更して、電流が３．８ｍＡに下がるまで充電する
３．２ ５ｍｉｎ休止する
３．３ １１４０ｍＡの定電流で２．０Ｖまで放電する
３．４ ５ｍｉｎ休止する
３．５ ステップ３．１から３．４を１０００サイクル繰り返す
３．６ 終了
Charge to 3.6V with constant current of 1.38mA (0.2C), change to constant voltage of 3.6V, stop charging after charging until current drops to 3.8mA (0.02C) Charge time Tc and charge capacity Cc are recorded.
Discharge to 2.0 V at a constant current of 2.38 mA (0.2 C) and record the discharge capacity Cd. (This step is the capacity to release to evaluate the charge, which is not necessary for the charge method.)
3. cycle:
3.1 Charge to 3.6 V with a constant current of 1140 mA, change to a constant voltage of 3.6 V, and charge until the current drops to 3.8 mA 3.2 rest for 5 min 3.3 with a constant current of 1 140 mA Discharge to 2.0 V 3.4 5 min pause 3.5 Repeat steps 3.1 to 3.4 for 1000 cycles 3.6 Finish
比較例１．２：リン酸鉄リチウムイオン電池、ＣＮ１０１３８８４７７Ｂの充電方法
比較例１．１の電池と同様の電池を、ｔ＝１０ｍｉｎの時間内で完全に充電することを期待すると、ＣＮ１０１３８８４７７Ｂに開示した急速充電方法によれば、必要とする定電流充電の電流は、Ｉ＝Ｃｒ／ｔ＊６０＝１９０／１０＊６０＝１１４０ｍＡ（６Ｃ倍率）となる。
Comparative Example 1.2: Charging Method of Lithium Iron Phosphate Ion Battery, CN101388477B Disclosed in CN101388477B is a battery similar to the battery of Comparative Example 1.1 in the expectation of completely charging within a time of t = 10 min. According to the quick charge method, the required current of constant current charge is I = Cr / t * 60 = 190/10 * 60 = 1140 mA (6 C magnification).
１．安定電圧の測定：１１４０ｍＡの定電流で３．６Ｖまで充電してから停止し、開路電圧を検出して、安定電圧Ｕｓを測定する。安定電圧Ｕｓ曲線は図１を参照する。電池が定電流充電を停止され、放置が始まった時点から計時し、各１０分を一つの時間帯として、ある１０分の時間帯が開始して、１０分の時間帯内で電池の開路電圧降下が１ｍＶよりも小さくなった後に、電池電圧が安定になったものと認め、この時間帯の第一時点と対応する電圧が電池の安定電圧Ｕｓとして選択される。 1. Measurement of stable voltage: Charge to 3.6 V with a constant current of 1140 mA and then stop, detect open circuit voltage and measure stable voltage Us. For the stable voltage Us curve, refer to FIG. When the battery is stopped from constant current charging and clocked from the start of leaving, each 10 minutes is one time zone, and a certain 10-minute time zone starts, the open-circuit voltage of the battery in the 10-minute time zone After the drop becomes smaller than 1 mV, it is recognized that the battery voltage has become stable, and the voltage corresponding to the first time point of this time zone is selected as the stable voltage Us of the battery.
２．３８ｍＡ（０．２Ｃ）の定電流で２．０Ｖまで放電する。（このステップは、電池を充電待状態にさせるように、前のステップで充電した容量を放出するもので、充電方法には必要ないものである。）
３．１１４０ｍＡの定電流で２Ｕｏ−Ｕｓまで充電してから停止し、充電時間Ｔｃと充電容量Ｃｃを記録する。
４．３８ｍＡ（０．２Ｃ）の定電流で２．０Ｖまで放電し、放電容量Ｃｄを記録する。（このステップは、充電を評価するために放出する容量で、充電方法には必要ないものである。）
５．サイクル：
５．１ １１４０ｍＡの定電流で２Ｕｏ−Ｕｓまで充電する
５．２ ５ｍｉｎ休止する
５．３ １１４０ｍＡの定電流で２．０Ｖまで放電する
５．４ ５ｍｉｎ休止する
５．５ ステップ５．１から５．４を１０００サイクル繰り返す
５．６ 終了
Discharge to 2.0 V at a constant current of 2.38 mA (0.2 C). (This step is to discharge the capacity charged in the previous step so that the battery is put in charge standby state, and is not necessary for the charging method.)
3. Charge to 2 Uo-Us with constant current of 140 mA and then stop, and record charge time Tc and charge capacity Cc.
Discharge to 2.0 V at a constant current of 4.38 mA (0.2 C) and record the discharge capacity Cd. (This step is the capacity to release to evaluate the charge, which is not necessary for the charge method.)
5. cycle:
5.1 Charge up to 2 Uo-Us at a constant current of 1140 mA 5.2 Pause for 5 minutes 5.3 Discharge up to 2.0 V at a constant current of 1140 mA 5.5 Pause for 5 minutes 5.5 Steps 5.1 to 5. Repeat 4 1000 cycles 5.6 End
実施例１：リン酸鉄リチウムイオン電池、本発明の方法 EXAMPLE 1 Lithium Iron Phosphate Ion Battery, Method of the Invention
比較例１．１の電池と同様の電池に、比較例１．２で測定した安定電圧Ｕｓを使用する。 For the same battery as the battery of Comparative Example 1.1, the stable voltage Us measured in Comparative Example 1.2 is used.
１．標準安定電圧の測定：３８ｍＡ（０．２Ｃ）の定電流で３．６Ｖまで充電し、３．６Ｖの定電圧に変更して、電流が３．８ｍＡ（０．０２Ｃ）に下がるまで充電した後に、充電を停止し、標準安定電圧Ｕｓｏを測定する。標準安定電圧Ｕｓｏ曲線は図１を参照する。電池が定電流・定電圧充電を停止され、放置が始まった時点から計時し、各１０分を一つの時間帯として、ある１０分の時間帯が開始して、１０分の時間帯内で電池の開路電圧降下が１ｍＶよりも小さくなった後に、電池電圧が安定になったものと認め、この時間帯の第一時点と対応する電圧が電池の標準安定電圧Ｕｓｏとして選択される。
２．３８ｍＡ（０．２Ｃ）の定電流で２．０Ｖまで放電する。（このステップは、電池を充電待状態にさせるように、前のステップで充電した容量を放出するもので、充電方法には必要ないものである）。
３．１０ｍｉｎで電池を完全に充電することを期待すると、本発明の電圧を修正・補償するリチウムイオン電池の充電方法によれば、必要とする定電流充電の電流は１１４０ｍＡ（６Ｃ倍率）であり、Ｕ＝３Ｕｏ−Ｕｓ−Ｕｓｏまで充電してから定電圧充電方式に変更し、電流が定電圧充電方式の前の電流の９５％に下がった後に終了し、充電時間Ｔｃと充電容量Ｃｃを記録する。
４．３８ｍＡ（０．２Ｃ）の定電流で２．０Ｖまで放電し、放電容量Ｃｄを記録する。（このステップは、充電を評価するために放出する容量で、充電方法には必要ないものである。）
５．サイクル：
５．１ １１４０ｍＡの定電流で３Ｕｏ−Ｕｓ−Ｕｓｏまで充電してから定電圧充電方式に変更し、電流が１０８３ｍＡ（定電圧充電方式の前の電流の９５％）に下がった後に終了する
５．２ ５ｍｉｎ休止する
５．３ １１４０ｍＡの定電流で２．０Ｖまで放電する
５．４ ５ｍｉｎ休止する
５．５ ステップ５．１から５．４を１０００サイクル繰り返す
５．６ 終了
1. Standard stable voltage measurement: Charge to 3.6V with a constant current of 38mA (0.2C), change to a constant voltage of 3.6V, charge after the current drops to 3.8mA (0.02C) Stop charging, and measure the standard stable voltage Uso. The standard stable voltage Uso curve is shown in FIG. The battery is stopped from constant current and constant voltage charging, and counting from the start of leaving, each 10 minutes as one time zone, a certain 10 minute time zone starts, the battery within 10 minutes time zone After the open circuit voltage drop of V.sub.b becomes smaller than 1 mV, it is recognized that the battery voltage has become stable, and the voltage corresponding to the first time point of this time zone is selected as the standard stable voltage Uso of the battery.
Discharge to 2.0 V at a constant current of 2.38 mA (0.2 C). (This step discharges the capacity charged in the previous step to put the battery on standby, and is not required for the charging method).
Assuming that the battery is fully charged in 3.10 min, according to the charging method of a lithium ion battery of the present invention for correcting and compensating the voltage of the present invention, the required current of constant current charging is 1140 mA (6 C magnification) , U = 3 Uo-Us-Uso, then change to constant voltage charging method, end after current drops to 95% of current before constant voltage charging method, record charge time Tc and charge capacity Cc Do.
Discharge to 2.0 V at a constant current of 4.38 mA (0.2 C) and record the discharge capacity Cd. (This step is the capacity to release to evaluate the charge, which is not necessary for the charge method.)
5. cycle:
5. Charge to 3 Uo-Us-Uso with a constant current of 1140 mA and change to the constant voltage charging method, and end after the current drops to 1083 mA (95% of the current before constant voltage charging method). Pause for 2 5 minutes 5.3 Discharge to 2.0 V at a constant current of 1 140 mA 5. 4 Pause for 5 minutes 5.5 Steps 5.1 to 5.4 are repeated 1000 cycles 5.6 Finish
比較例１．１、比較例１．２、実施例１の実験結果を表１に表す。
The experimental results of Comparative Example 1.1, Comparative Example 1.2, and Example 1 are shown in Table 1.
充電の飽和度は、標準的充電方法で充電し、標準的放電方法で放電する場合に放出する容量が１００％である。非標準的充電方法で充電し、標準的放電方法で放電する場合に放出した容量と、標準的放電容量との百分率が充電の飽和度になる。 The saturation of charge is 100% of the capacity released when charged by the standard charge method and discharged by the standard discharge method. The percentage of the capacity discharged when charging by the non-standard charging method and discharging by the standard discharging method is the percentage of the standard discharging capacity is the saturation of the charge.
比較例２．１：コバルト酸リチウム電池、標準的充電方法
７０３０４８Ｈ１０Ｃは３．７Ｖ８００ｍＡｈの高倍率型ポリマーリチウムイオン電池であり、電池システムはＬｉＣｏＯ２／Ｃ系単電池（Ｕｏ＝４．２Ｖ）、定格容量Ｃｒ＝８００ｍＡｈであり、ＧＢ／Ｔ１８２８７−２０１３の標準的充電方法を参照する。
Comparative example 2.1: Lithium cobaltate battery, standard charging method 703048H10C is a 3.7 V 800 mAh high magnification type polymer lithium ion battery, and the battery system is a LiCoO 2 / C cell (Uo = 4.2 V), rated capacity Cr = 800 mAh, refer to the standard charging method of GB / T 18287-2013.
１．１６０ｍＡ（０．２Ｃ）の定電流で４．２Ｖまで充電し、４．２Ｖの定電圧に変更して、電流が１６ｍＡ（０．０２Ｃ）に下がるまで充電し、充電時間Ｔｃと充電容量Ｃｃを記録する。
２．１６０ｍＡ（０．２Ｃ）の定電流で３．０Ｖまで放電し、放電容量Ｃｄを記録する。（このステップは、充電を評価するために放出する容量で、充電方法には必要ないものである。）。
３．サイクル：
３．１ ４８００ｍＡの定電流で４．２Ｖまで充電し、４．２Ｖの定電圧に変更して電流が１６ｍＡに下がるまで充電する
３．２ ５ｍｉｎ休止する
３．３ ４８０００ｍＡの定電流で３．０Ｖまで放電する
３．４ ５ｍｉｎ休止する
３．５ ステップ３．１から３．４を５００サイクル繰り返す
３．６ 終了
Charge to 4.2 V with a constant current of 1.160 mA (0.2 C), change to a constant voltage of 4.2 V, charge until the current drops to 16 mA (0.02 C), charge time Tc and charge capacity Record Cc.
2. Discharge to 3.0 V at a constant current of 160 mA (0.2 C) and record the discharge capacity Cd. (This step is the capacity to release to evaluate the charge, which is not required for the charge method).
3. cycle:
3.1 Charge to 4.2 V with constant current of 4800 mA, change to constant voltage of 4.2 V and charge until current drops to 16 mA 3.2 Pause for 5 min 3.3 3.0 V with constant current of 48000 mA Discharge up to 3.4 5 min pause 3.5 Repeat steps 3.5 to 3.1 for 500 cycles 3.6 Finish
比較例２．２：コバルト酸リチウム電池、ＣＮ１０１３８８４７７Ｂの充電方法 Comparative example 2.2: Lithium cobaltate battery, charging method of CN101388477B
比較例２．１の電池と同様に、電池をｔ＝１０ｍｉｎの時間内で完全に充電することを期待すると、ＣＮ１０１３８８４７７Ｂに開示した急速充電方法によれば、必要とする定電流充電の電流は、Ｉ＝Ｃｒ／ｔ＊６０＝８００／１０＊６０＝４８００ｍＡ（６Ｃ倍率）となる。 Similar to the battery of Comparative Example 2.1, in the case of expecting the battery to be fully charged within the time of t = 10 min, according to the rapid charging method disclosed in CN101388477B, the required current of constant current charging is I = Cr / t * 60 = 800/10 * 60 = 4800 mA (6 C magnification).
１．安定電圧の測定：４８００ｍＡの定電流で４．２Ｖまで充電してから停止し、開路電圧を検出して、安定電圧Ｕｓを測定する。安定電圧Ｕｓ曲線は図２を参照する。電池が定電流充電を停止され、放置が始まった時点から計時し、各１０分を一つの時間帯として、ある１０分の時間帯から、１０分の時間帯内で電池の開路電圧降下が１ｍＶよりも小さくなった後に、電池電圧が安定になったものと認め、この時間帯の第一時点と対応する電圧が電池の安定電圧Ｕｓとして選択される。
２．１６０ｍＡ（０．２Ｃ）の定電流で３．０Ｖまで放電する（このステップは、電池を充電待状態にさせるように、前のステップで充電した容量を放出するもので、充電方法には必要ないものである）。
３．４８００ｍＡの定電流で２Ｕｏ−Ｕｓまで充電してから停止し、充電時間Ｔｃと充電容量Ｃｃを記録する。
４．１６０ｍＡ（０．２Ｃ）の定電流で３．０Ｖまで放電し、放電容量Ｃｄを記録する。（このステップは、充電を評価するために放出する容量で、充電方法には必要ないものである。）
５．サイクル：
５．１ ４８００ｍＡの定電流で２Ｕｏ−Ｕｓまで充電する
５．２ ５ｍｉｎ休止する
５．３ ４８００ｍＡの定電流で３．０Ｖまで放電する
５．４ ５ｍｉｎ休止する
５．５ ステップ５．１から５．４を５００サイクル繰り返す
５．６ 終了
1. Measurement of stable voltage: Charge to 4.2 V with constant current of 4800 mA and then stop, detect open circuit voltage and measure stable voltage Us. For the stable voltage Us curve, refer to FIG. The battery is stopped from constant current charging and counted from the start of leaving, each 10 minutes is one time zone, and the open circuit voltage drop of the battery is 1 mV in a 10 minute time zone from a 10 minute time zone After becoming smaller, it is recognized that the battery voltage has become stable, and the voltage corresponding to the first time point of this time zone is selected as the stable voltage Us of the battery.
2. Discharge to 3.0 V with a constant current of 2. 160 mA (0.2 C) (This step releases the capacity charged in the previous step to put the battery in standby mode. Not necessary).
After charging to 2 Uo-Us with a constant current of 3.4 800 mA, stop and record the charging time Tc and the charging capacity Cc.
4. Discharge to 3.0 V at a constant current of 160 mA (0.2 C) and record the discharge capacity Cd. (This step is the capacity to release to evaluate the charge, which is not necessary for the charge method.)
5. cycle:
5.1 Charge to 2 Uo-Us at constant current of 4800 mA 5.2 Pause at 5 minutes 5.3 Discharge to 3.0 V at constant current of 4800 mA 5.5 Pause at 5.5 5.5 Steps 5.1 to 5. Repeat 4 500 cycles 5.6 End
実施例２：コバルト酸リチウム電池、本発明の方法 Example 2: Lithium cobaltate battery, method of the invention
比較例２．１の電池と同様の電池に、比較例２．２で測定した安定電圧Ｕｓを使用する。
１．標準安定電圧の測定：１６０ｍＡ（０．２Ｃ）の定電流で４．２Ｖまで充電し、４．２Ｖの定電圧に変更して、電流が１６ｍＡ（０．０２Ｃ）に下がるまで充電した後に、充電を停止し、開路電圧を検出して、標準安定電圧Ｕｓｏを測定する。標準安定電圧Ｕｓｏ曲線は図２を参照する。電池が定電流・定電圧充電を停止され、放置が始まった時点から計時し、各１０分を一つの時間帯として、ある１０分の時間帯が開始して、１０分の時間帯内で電池の開路電圧降下が１ｍＶよりも小さくなった後に、電池電圧が安定になったものと認め、この時間帯の第一時点と対応する電圧が電池の標準安定電圧Ｕｓｏとして選択される。
２．１６０ｍＡ（０．２Ｃ）の定電流で３．０Ｖまで放電する（このステップは、電池を充電待状態にさせるように、前のステップで充電した容量を放出するもので、充電方法には必要ないものである）。
３．１０ｍｉｎで電池を完全に充電することを期待すると、本発明の電圧を修正・補償するリチウムイオン電池の充電方法によれば、必要とする定電流充電の電流は４８００ｍＡ（６Ｃ倍率）となり、Ｕ＝３Ｕｏ−Ｕｓ−Ｕｓｏまで充電してから定電圧充電方式に変更し、電流が定電圧充電方式の前の電流の９５％に下がった後に終了し、充電時間Ｔｃと充電容量Ｃｃを記録する。
４．１６０ｍＡ（０．２Ｃ）の定電流で３．０Ｖまで放電し、放電容量Ｃｄを記録する。（このステップは、充電を評価するために放出する容量で、充電方法には必要ないものである。）
５．サイクル：
５．１ ４８００ｍＡの定電流で３Ｕｏ−Ｕｓ−Ｕｓｏまで充電した後、定電圧充電方式に変更し、電流が４５６０ｍＡ（定電圧充電方式の前電流の９５％）に下がった後に終了する
５．２ ５ｍｉｎ休止する
５．３ ４８００ｍＡの定電流で３．０Ｖまで放電する
５．４ ５ｍｉｎ休止する
５．５ ステップ５．１から５．４を５００サイクル繰り返す
５．６ 終了
For the same battery as the battery of Comparative Example 2.1, the stable voltage Us measured in Comparative Example 2.2 is used.
1. Measurement of standard stable voltage: Charge to 4.2V with constant current of 160mA (0.2C), change to constant voltage of 4.2V, charge after charging until current drops to 16mA (0.02C) Stop, detect the open circuit voltage, and measure the standard stable voltage Uso. The standard stable voltage Uso curve is shown in FIG. The battery is stopped from constant current and constant voltage charging, and counting from the start of leaving, each 10 minutes as one time zone, a certain 10 minute time zone starts, the battery within 10 minutes time zone After the open circuit voltage drop of V.sub.b becomes smaller than 1 mV, it is recognized that the battery voltage has become stable, and the voltage corresponding to the first time point of this time zone is selected as the standard stable voltage Uso of the battery.
2. Discharge to 3.0 V with a constant current of 2. 160 mA (0.2 C) (This step releases the capacity charged in the previous step to put the battery in standby mode. Not necessary).
Assuming that the battery is fully charged in 3.10 min, according to the charging method of a lithium ion battery of the present invention for correcting and compensating the voltage of the present invention, the required constant current charging current is 4800 mA (6 C magnification), Change to constant voltage charging method after charging to U = 3 Uo-Us-Uso, end after current drops to 95% of current before constant voltage charging method, record charge time Tc and charge capacity Cc .
4. Discharge to 3.0 V at a constant current of 160 mA (0.2 C) and record the discharge capacity Cd. (This step is the capacity to release to evaluate the charge, which is not necessary for the charge method.)
5. cycle:
5.1 After charging to 3 Uo-Us-Uso with constant current of 4800 mA, change to constant voltage charging method and end after current drops to 4560 mA (95% of pre-current of constant voltage charging method) 5.2 Pause for 5 minutes 5.3 Discharge to 3.0 V with a constant current of 4800 mA 5.4 Pause for 5 minutes 5.5 Repeat steps 500 from step 5.1 to 5.4 5.6 Finish
比較例２．１、比較例２．２、実施例２の実験結果を表２に表す。
The experimental results of Comparative Example 2.1, Comparative Example 2.2, and Example 2 are shown in Table 2.
比較例３．１：４．３５Ｖの高電圧コバルト酸リチウム電池、標準的充電方法
６０１２５０ＨＶ１０Ｃは４．３５Ｖ２３５ｍＡｈの高倍率型リン酸鉄リチウムイオン電池であり、電池システムは４．３５Ｖの高電圧型ＬｉＣｏＯ２／Ｃ系単電池（Ｕｏ＝４．３５Ｖ）、定格容量Ｃｒ＝２３５ｍＡｈであり、ＧＢ／Ｔ１８２８７−２０１３の標準的充電方法を参照する。
Comparative example 3.1: 4.35 V high voltage lithium cobaltate battery, standard charging method 601250HV10C is a 4.35 V 235 mAh high power lithium iron phosphate lithium battery, and the battery system is 4.35 V high voltage LiCoO 2 / C cells (Uo = 4.35 V), rated capacity Cr = 235 mAh, and refer to the standard charging method of GB / T 18287-2013.
１．４７ｍＡ（０．２Ｃ）の定電流で４．３５Ｖまで充電し、４．２Ｖの定電圧に変更して、電流が４．７ｍＡ（０．０２Ｃ）に下がるまで充電し、充電時間Ｔｃと充電容量Ｃｃを記録する。
２．４７ｍＡ（０．２Ｃ）の定電流で３．０Ｖまで放電し、放電容量Ｃｄを記録する。（このステップは、充電を評価するために放出する容量で、充電方法には必要ないものである。）
３．サイクル：
３．１ ４７０ｍＡの定電流で４．３５Ｖまで充電し、４．３５Ｖの定電圧に変更して、電流が４．７ｍＡに下がるまで充電する
３．２ ５ｍｉｎ休止する
３．３ ４７０ｍＡの定電流で３．０Ｖまで放電する
３．４ ５ｍｉｎ休止する
３．５ ステップ３．１から３．４を５００サイクル繰り返す
３．６ 終了
Charge to 4.35 V with a constant current of 1.47 mA (0.2 C), change to a constant voltage of 4.2 V, charge until the current drops to 4.7 mA (0.02 C), and charge time Tc with Record the charge capacity Cc.
Discharge to 3.0 V at a constant current of 2.47 mA (0.2 C) and record the discharge capacity Cd. (This step is the capacity to release to evaluate the charge, which is not necessary for the charge method.)
3. cycle:
3.1 Charge to 4.35 V with a constant current of 470 mA, change to a constant voltage of 4.35 V, charge until the current drops to 4.7 mA 3.2 5 min pauses at a constant current of 3.3 470 mA Discharge to 3.0 V 3.4 Pause for 5 minutes 3.5 Repeat steps 500 through 500 for 3.6 steps 3.6 Finish
比較例３．２：４．３５Ｖの高電圧型コバルト酸リチウム電池、ＣＮ１０１３８８４７７Ｂの充電方法 Comparative example 3.2: 4.35 V high voltage type lithium cobalt oxide battery, charging method of CN101388477B
比較例３．１の電池と同様の電池を、ｔ＝３０ｍｉｎの時間内で完全に充電することを期待すると、ＣＮ１０１３８８４７７Ｂに開示した急速充電方法によれば、必要とする定電流充電の電流は、Ｉ＝Ｃｒ／ｔ＊６０＝２３５／３０＊６０＝４７０ｍＡ（２Ｃ倍率）となる。 Assuming that a battery similar to the battery of Comparative Example 3.1 is completely charged within the time of t = 30 min, according to the rapid charging method disclosed in CN101388477B, the required current of constant current charging is I = Cr / t * 60 = 235/30 * 60 = 470 mA (2C magnification).
１．安定電圧の測定：４７０ｍＡの定電流で４．３５Ｖまで充電してから停止し、開路電圧を検出して、安定電圧Ｕｓを測定する。安定電圧Ｕｓ曲線は図３を参照する。電池が定電流充電を停止され、放置が始まった時点から計時し、各５分を一つの時間帯として、ある時間帯が開始して、５分の時間帯内で電池の開路電圧降下が２ｍＶよりも小さくなった後に、電池電圧が安定になったものと認め、この時間帯の第一時点と対応する電圧が電池の安定電圧Ｕｓとして選択される。
２．４７ｍＡ（０．２Ｃ）の定電流で３．０Ｖまで放電する（このステップは、電池を充電待状態にさせるように、前のステップで充電した容量を放出するもので、充電方法には必要ないものである）。
３．４７０ｍＡの定電流で２Ｕｏ−Ｕｓまで充電してから停止し、充電時間Ｔｃと充電容量Ｃｃを記録する。
４．４７ｍＡ（０．２Ｃ）の定電流で３．０Ｖまで放電し、放電容量Ｃｄを記録する。（このステップは、充電を評価するために放出する容量で、充電方法には必要ないものである。）
５．サイクル：
５．１ ４７０ｍＡの定電流で２Ｕｏ−Ｕｓまで充電する
５．２ ５ｍｉｎ休止する
５．３ ４７０ｍＡの定電流で３．０Ｖまで放電する
５．４ ５ｍｉｎ休止する
５．５ ステップ５．１から５．４を５００サイクル繰り返す
５．６ 終了
1. Measurement of stable voltage: Charge to 4.35 V with a constant current of 470 mA and then stop, detect open circuit voltage and measure stable voltage Us. For the stable voltage Us curve, refer to FIG. The battery is stopped from constant current charging and counting from the start of leaving, each 5 minutes is one time zone, a certain time zone starts, and the open circuit voltage drop of the battery is 2mV within the time zone of 5 minutes After becoming smaller, it is recognized that the battery voltage has become stable, and the voltage corresponding to the first time point of this time zone is selected as the stable voltage Us of the battery.
Discharge to 3.0 V with a constant current of 2.47 mA (0.2 C) (This step releases the capacity charged in the previous step to put the battery in standby mode. Not necessary).
After charging to 2 Uo-Us with a constant current of 3.470 mA, stop and record the charging time Tc and the charging capacity Cc.
Discharge to 3.0 V at a constant current of 4.47 mA (0.2 C) and record the discharge capacity Cd. (This step is the capacity to release to evaluate the charge, which is not necessary for the charge method.)
5. cycle:
5.1 Charge to 2 Uo-Us at a constant current of 470 mA 5.2 Pause for 5 minutes 5.3 Discharge to 3.0 V at a constant current of 470 mA Pause for 5 5.5 minutes 5.5 Steps 5.1 to 5. Repeat 4 500 cycles 5.6 End
実施例３：４．３５Ｖの高電圧型コバルト酸リチウム電池、本発明の方法 Example 3 4.35 V High Voltage Lithium Cobalt Oxide Battery, Method of the Invention
比較例３．１の電池と同様の電池に、比較例３．２で測定した安定電圧Ｕｓを使用する。
１．標準安定電圧の測定：４７ｍＡ（０．２Ｃ）の定電流で４．３５Ｖまで充電し、４．３５Ｖの定電圧方式に変更し、電流が４．７ｍＡ（０．０２Ｃ）に下がるまで充電した後に、充電を停止し、開路電圧を検出して、標準安定電圧Ｕｓｏを測定する。標準安定電圧Ｕｓｏ曲線は図３を参照する。電池が定電流・定電圧充電を停止され、放置が始まった時点から計時し、各５分を一つの時間帯として、ある時間帯が開始して、５分の時間帯内で電池の開路電圧降下が２ｍＶよりも小さくなった後に、電池電圧が安定になったものと認め、この時間帯の第一時点と対応する電圧が電池の標準安定電圧Ｕｓｏとして選択される。
２．４７ｍＡ（０．２Ｃ）の定電流で３．０Ｖまで放電する（このステップは、電池を充電待状態にさせるように、前のステップで充電した容量を放出するもので、充電方法には必要ないものである）。
３．３０ｍｉｎで電池を完全に充電することを期待すると、本発明の電圧を修正・補償するリチウムイオン電池の充電方法によれば、必要とする定電流充電の電流は４７０ｍＡ（２Ｃ倍率）であり、Ｕ＝３Ｕｏ−Ｕｓ−Ｕｓｏまで充電してから定電圧充電方式に変更し、電流が定電圧充電方式の前の電流の９５％に下がった後に終了し、充電時間Ｔｃと充電容量Ｃｃを記録する。
４．４７ｍＡ（０．２Ｃ）の定電流で３．０Ｖまで放電し、放電容量Ｃｄを記録する。（このステップは、充電を評価するために放出する容量で、充電方法には必要ないものである。）
５．サイクル：
５．１ ４７０ｍＡの定電流でＵ＝３Ｕｏ−Ｕｓ−Ｕｓｏまで充電してから定電圧充電方式に変更し、電流が４４６．５ｍＡ（定電圧充電方式の前の電流の９５％）に下がった後に終了する
５．２ ５ｍｉｎ休止する
５．３ ４７０ｍＡの定電流で３．０Ｖまで放電する
５．４ ５ｍｉｎ休止する
５．５ ステップ５．１から５．４を５００サイクル繰り返す
５．６ 終了
For the same battery as the battery of Comparative Example 3.1, the stable voltage Us measured in Comparative Example 3.2 is used.
1. Measurement of standard stable voltage: Charge to 4.35V with constant current of 47mA (0.2C), change to constant voltage system of 4.35V, and charge after the current drops to 4.7mA (0.02C) Stop charging, detect open circuit voltage and measure standard stable voltage Uso. For the standard stable voltage Uso curve, refer to FIG. When the battery is stopped for constant current and constant voltage charging and clocked from the start of leaving, each 5 minutes is one time zone, a certain time zone starts, and the open circuit voltage of the battery in the time zone of 5 minutes After the drop becomes smaller than 2 mV, it is recognized that the battery voltage has become stable, and the voltage corresponding to the first time point of this time zone is selected as the standard stable voltage Uso of the battery.
Discharge to 3.0 V with a constant current of 2.47 mA (0.2 C) (This step releases the capacity charged in the previous step to put the battery in standby mode. Not necessary).
Assuming that the battery is fully charged in 3.30 minutes, according to the charging method of a lithium ion battery of the present invention for correcting and compensating the voltage of the present invention, the required current of constant current charging is 470 mA (2 C magnification) , U = 3 Uo-Us-Uso, then change to constant voltage charging method, end after current drops to 95% of current before constant voltage charging method, record charge time Tc and charge capacity Cc Do.
Discharge to 3.0 V at a constant current of 4.47 mA (0.2 C) and record the discharge capacity Cd. (This step is the capacity to release to evaluate the charge, which is not necessary for the charge method.)
5. cycle:
5.1 After charging to U = 3 Uo-Us-Uso with a constant current of 470 mA, change to constant voltage charging method and after the current drops to 446.5 mA (95% of the current before constant voltage charging method) Finish 5.2 Stop for 5 minutes 5.3 Discharge to 3.0 V at 470 mA 5.4 Pause for 5 minutes 5.5 Repeat steps 500 through 500 for steps 5.1 to 5.4 5.6 Finish
比較例３．１、比較例３．２、実施例３の実験結果を表３に表す。
The experimental results of Comparative Example 3.1, Comparative Example 3.2 and Example 3 are shown in Table 3.
具体的な実施工程中において、選択可能なことは、１．それぞれの電池を毎回充電する前にＵｓ、Ｕｓｏを測定し、次に、本発明（やＣＮ１０１３８８４７７Ｂ）の方法で充電することもできるが、これは明らかに面倒である。２．それぞれの電池を充電する前にＵｓ、Ｕｓｏを測定し、次に、毎回の充電を本発明（やＣＮ１０１３８８４７７Ｂ）の方法で行うこともできるが、これも非常に面倒である。３．各タイプの電池を充電する前にＵｓ、Ｕｓｏを測定し、次に該タイプのそれぞれの電池の各充電を本発明（やＣＮ１０１３８８４７７Ｂ）の方法で行うことができ、これはとても便利になる。同じタイプの異なる電池個体との間、或いはそれぞれの電池の異なる充電回数の前には、微小な差異が存在しているが、特許の実施に影響しない。本特許の実施により充電を飽和状態に達させることができるが、それぞれの電池の各充電が１００％の飽和状態に達することは保証しない。 What can be selected during the specific implementation process is: It is also possible to measure Us and Uso before charging each battery each time, and then charge it according to the method of the present invention (or CN101388477B), but this is obviously troublesome. 2. It is also possible to measure Us and Uso before charging each battery, and then perform each charge according to the method of the present invention (or CN101388477B), but this is also very troublesome. 3. Before charging each type of battery, Us, Uso can be measured, and then each charging of each type of battery can be performed by the method of the present invention (or CN101388477B), which is very convenient. There are minor differences between the same type of different battery individuals, or before the different charging times of each battery, but they do not affect the practice of the patent. The practice of this patent allows the charge to reach saturation, but does not guarantee that each charge of each cell will reach 100% saturation.
具体的な実施工程中において、リチウムイオン電池が完全に放電した後に、充電し始める必要はなく、リチウムイオン電池が空容量、半分や半分以上の容量を持つ状況において、本発明の方法で充電することができ、フル状態であれば充電しなくてもよい。
上記明細書の開示と教示によると、当業者にとっては、これらの実施例に対する多種類な変更と修正、例えば、各種類のリチウムイオン電池、電池セル、充電回路、充電器、充電制御部品などの製品への応用などは可能である。このように、本発明は上記開示と説明に関する具体的な実施様態に限るわけではない。本発明に対する修正と変更も、本発明の権利請求の保護範囲内に属するべきである。
During the specific implementation process, it is not necessary to start charging after the lithium ion battery is completely discharged, and the lithium ion battery is charged by the method of the present invention in the situation having empty capacity, half, half or more capacity. If it is full, it does not have to be charged.
According to the disclosure and teaching of the above specification, it will be understood by those skilled in the art that various changes and modifications to these embodiments, such as various types of lithium ion batteries, battery cells, charging circuits, chargers, charge control parts, etc. Application to products is possible. Thus, the present invention is not limited to the specific embodiments relating to the above disclosure and description. Modifications and alterations to the invention should also fall within the scope of the claims of the invention.
Claims (12)
電池の充電上限電圧は、Ｕ＝３Ｕｏ−Ｕｓ−Ｕｓｏに従って設定される
ことを特徴とする電圧を修正・補償するリチウムイオン電池の充電方法。 It is a charging method of a lithium ion battery that corrects and compensates the voltage, and when charging the battery, when the charging voltage is charged up to the charging upper limit voltage U, it changes to the constant voltage charging method and the charging current becomes the constant voltage charging Stop charging after 5% to 99.99% of the current before
The charging upper limit voltage of the battery is set in accordance with U = 3 Uo-Us-Uso.
電池の充電上限電圧は、Ｕ＝３Ｕｏ−Ｕｓ−Ｕｓｏに従って設定される
ことを特徴とする請求項１に記載の電圧を修正・補償するリチウムイオン電池の充電方法。 When the battery is charged to the charging upper limit voltage U, change to the constant voltage charging method and stop charging after the charging current drops 50% to 99.99% of the current before the constant voltage charging method,
The charging method of a lithium ion battery according to claim 1, wherein the charging upper limit voltage of the battery is set in accordance with U = 3 Uo-Us-Uso.
ことを特徴とする請求項１又は２に記載の電圧を修正・補償するリチウムイオン電池の充電方法。 The value of Us is counted from the time when the constant current charging to the battery is stopped and leaving is started, a certain time zone Tus starts, and the open circuit voltage drop of the battery is smaller than the value within the time zone Tus The voltage according to claim 1 or 2, wherein, when the battery voltage becomes stable, the voltage corresponding to the first time point of this time zone Tus is selected as the stable voltage Us of the battery. How to charge the lithium ion battery to correct and compensate the
ことを特徴とする請求項１又は２に記載の電圧を修正・補償するリチウムイオン電池の充電方法。 The method of charging a lithium ion battery according to claim 1 or 2, wherein the battery is charged to a charging upper limit voltage U by a constant current charging method.
ことを特徴とする請求項１又は２に記載の電圧を修正・補償するリチウムイオン電池の充電方法。 A battery is charged to a charge upper limit voltage U by a multistage constant current charging method, and Us is measured by a current immediately before stopping charging. How to charge a lithium ion battery to compensate.
ことを特徴とする請求項１又は２に記載の電圧を修正・補償するリチウムイオン電池の充電方法。 The voltage according to claim 1 or 2, wherein the battery is charged to the upper limit voltage U by the non-constant current charging method, and Us is measured by the current immediately before stopping charging. How to charge a lithium ion battery to compensate.
ことを特徴とする請求項１又は２に記載の電圧を修正・補償するリチウムイオン電池の充電方法。 Uso is a standard stable voltage in which the voltage drops after charging to Uo with constant current and constant voltage, and the value of Us is the time at which constant current charging of the battery is stopped and counting is started from when storage is started When the band Tuso starts and the open circuit voltage drop of the battery becomes smaller than a value within a certain time zone Tuso and the battery voltage becomes stable, the voltage corresponding to the first time point of this time zone Tuso is the battery The method of charging a lithium ion battery according to claim 1 or 2, wherein the voltage is selected as a standard stable voltage Uso.
ことを特徴とする請求項７に記載の電圧を修正・補償するリチウムイオン電池の充電方法。 Stop the constant current / constant voltage charging to the battery, count from the point when leaving started, set 5 minutes each as one time zone, start the time zone T5 for a certain 5 minutes, time zone T5 of the said 5 minutes It is recognized that the voltage of the battery has become stable after the open circuit voltage drop of the battery has become smaller than 2mV, and the voltage corresponding to the first time of this time period T5 is selected as the standard stable voltage Uso of the battery 8. The method of charging a lithium ion battery according to claim 7, wherein the voltage is corrected and compensated.
ことを特徴とする請求項７に記載の電圧を修正・補償するリチウムイオン電池の充電方法。 The constant current / constant voltage charging to the battery is stopped, counting from the point when leaving is started, and a 10-minute time zone T10 starts with each 10 minutes as one time zone, the 10-minute time zone T10 It is recognized that the voltage of the battery has become stable after the open circuit voltage drop of the battery has become smaller than 1 mV, and the voltage corresponding to the first time point of this time period T10 is selected as the standard stable voltage Uso of the battery. 8. The method of charging a lithium ion battery according to claim 7, wherein the voltage is corrected and compensated.
ことを特徴とする請求項７に記載の電圧を修正・補償するリチウムイオン電池の充電方法。 The value of Us is measured from the time when the battery is stopped for constant current charging and left to stand, and from a certain time zone Tus ', the open circuit voltage drop of the battery becomes smaller than the value within a certain time zone Tus' The voltage according to claim 7, wherein the voltage corresponding to the first time point of this time zone Tus' is selected as the stable voltage Us of the battery when the voltage of the battery becomes stable. -How to charge the lithium ion battery to compensate.
ことを特徴とする請求項１又は２に記載の電圧を修正・補償するリチウムイオン電池の充電方法。 3. The lithium ion battery for correcting and compensating the voltage according to claim 1 or 2, wherein Uo is a charge termination voltage used by a low magnification constant current-constant voltage charging system generally accepted in the industry. Charging method.
まで充電した後に、充電を停止する
ことを特徴とする請求項１又は２に記載の電圧を修正・補償するリチウムイオン電池の充電方法。 If the battery is a lithium cobaltate battery and Uo = 4.2 V, then
The method of charging a lithium ion battery according to claim 1 or 2, wherein the charging is stopped after charging to a maximum.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US15/723216 | 2017-10-03 | ||
| US15/723,216 US10707541B2 (en) | 2015-12-31 | 2017-10-03 | Lithium-ion battery charging method for correcting and compensating voltage |
| CNPCT/CN2017/114911 | 2017-12-07 | ||
| PCT/CN2017/114911 WO2019109283A1 (en) | 2017-12-07 | 2017-12-07 | Lithium ion battery charging method for correcting compensation voltage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2019068708A true JP2019068708A (en) | 2019-04-25 |
| JP6694463B2 JP6694463B2 (en) | 2020-05-13 |
Family
ID=62643261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2018056321A Active JP6694463B2 (en) | 2017-10-03 | 2018-03-23 | Lithium-ion battery charging method to correct / compensate voltage |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP6694463B2 (en) |
| KR (1) | KR102185010B1 (en) |
| CN (1) | CN108235791A (en) |
| WO (1) | WO2019109283A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112448050B (en) | 2019-08-28 | 2022-06-24 | 北京小米移动软件有限公司 | Charging method and charging device for lithium ion battery |
| CN112448434B (en) * | 2019-09-03 | 2024-01-30 | 华为技术有限公司 | Charging control method and charging control device |
| EP3872957A4 (en) * | 2019-10-21 | 2022-11-16 | Ningde Amperex Technology Ltd. | Charging method, electronic apparatus, and storage medium |
| CN114362301A (en) * | 2021-12-27 | 2022-04-15 | 厦门芯阳科技股份有限公司 | Lithium battery charging voltage control method and device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004282881A (en) * | 2003-03-14 | 2004-10-07 | Mitsumi Electric Co Ltd | Apparatus and method for charging secondary battery |
| CN101635376A (en) * | 2009-05-28 | 2010-01-27 | 广州丰江电池新技术股份有限公司 | Performing method of flexible-packaging lithium-iron-phosphate aqueous positive-pole lithium battery |
| CN101640296B (en) * | 2009-08-28 | 2011-09-28 | 广州丰江电池新技术股份有限公司 | Quick charging method for improving storage battery specific capacity |
| KR101779949B1 (en) * | 2014-11-05 | 2017-09-19 | 주식회사 엘지화학 | Battery Pack Charger for Balancing Battery Units of Battery Pack |
| CN105609890B (en) * | 2015-12-31 | 2018-07-24 | 广州丰江电池新技术股份有限公司 | Correct the non-constant voltage charging method of lithium ion battery for making up voltage |
-
2017
- 2017-12-07 WO PCT/CN2017/114911 patent/WO2019109283A1/en active Application Filing
- 2017-12-07 CN CN201780002550.9A patent/CN108235791A/en active Pending
-
2018
- 2018-01-25 KR KR1020180009338A patent/KR102185010B1/en active IP Right Grant
- 2018-03-23 JP JP2018056321A patent/JP6694463B2/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| WO2019109283A1 (en) | 2019-06-13 |
| JP6694463B2 (en) | 2020-05-13 |
| KR102185010B1 (en) | 2020-12-01 |
| CN108235791A (en) | 2018-06-29 |
| KR20190039372A (en) | 2019-04-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6664002B2 (en) | Non-constant voltage charging method for lithium ion battery that corrects and compensates for voltage | |
| CN112366375B (en) | Quick charging method for lithium ion power battery | |
| US10236702B2 (en) | Method and apparatus for rapidly charging battery | |
| WO2010034179A1 (en) | Quick charge method | |
| JP6694463B2 (en) | Lithium-ion battery charging method to correct / compensate voltage | |
| TW200532966A (en) | Battery apparatus and discharge controlling method of battery apparatus | |
| CN110548702B (en) | Consistency screening method for power type lithium battery | |
| CN107437642B (en) | Intelligent charging method and device | |
| CN107808987A (en) | Secondary battery charging method | |
| WO2012129974A1 (en) | Fast charging method for rechargeable battery | |
| CN111697271A (en) | Lithium ion battery formation and capacity-dividing method | |
| CN101388562B (en) | Fast charging method | |
| CN111650518A (en) | Lithium ion battery full-capacity prediction method | |
| CN111799517A (en) | Method for charging secondary battery | |
| CN117039218A (en) | Method for making battery step charging strategy | |
| EP3467933A1 (en) | Lithium-ion battery charging method for correcting and compensating voltage | |
| CN111624491A (en) | Method and device for determining residual electric quantity of battery and battery management system | |
| CN112421137A (en) | Charging voltage matching method for power lead-acid storage battery | |
| CN116404727B (en) | Management method and management system for secondary battery | |
| CN117543756A (en) | Battery charging and discharging method and device, electronic equipment and medium | |
| CN116031512A (en) | Electrochemical device management method, electrochemical device management system, electrochemical device and electronic equipment | |
| CN116760143A (en) | Electric equalization method and battery pack | |
| CN117556182A (en) | SOH calculation method and application thereof | |
| CN116472633A (en) | Electrochemical device management method, electrochemical device management device, charging device, battery system, and medium | |
| CN114430077A (en) | Electrochemical device management method, electronic apparatus, and electrochemical device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20180323 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20181212 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20190306 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20190904 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20200407 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20200417 |
|
| R150 | Certificate of patent or registration of utility model |
Ref document number: 6694463 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |