CN106711508A - Capacity grading method of high-voltage lithium ion battery - Google Patents
Capacity grading method of high-voltage lithium ion battery Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 30
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 29
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 29
- 238000007599 discharging Methods 0.000 claims abstract description 5
- 208000028659 discharge Diseases 0.000 claims description 18
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 230000032683 aging Effects 0.000 abstract description 4
- 230000007547 defect Effects 0.000 abstract 1
- 230000005611 electricity Effects 0.000 abstract 1
- 230000009469 supplementation Effects 0.000 abstract 1
- 238000000926 separation method Methods 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 229910052987 metal hydride Inorganic materials 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- -1 nickel metal hydride Chemical class 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- 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
- H01M10/058—Construction or manufacture
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- 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
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- 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
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- 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
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
Description
技术领域technical field
本发明涉及锂离子电池制作技术领域，具体涉及一种高压锂离子电池的分容方法。The invention relates to the technical field of manufacturing lithium-ion batteries, in particular to a method for dividing the capacity of high-voltage lithium-ion batteries.
背景技术Background technique
锂离子电池作为新能源领域的重要组成部分，已成为全球经济发展的一个新热点，相对于与传统的铅酸电池和镍氢、镍镉电池而言，锂离子电池的比容量高、循环寿命长、安全性能好，对环境友好，已逐步取代铅酸电池和镍氢、镍镉等电池，广泛地应用于手机、笔记本和电动汽车等方面，随着这些行业的迅速发展，锂离子电池的生产及需求量也会与日俱增，具有广阔的市场空间。现有的锂离子电池在制造过程中，成品锂离子电池在入库或出货前均会进行分容、补电阶段。目前，常规锂离子电池的分容补电方法是将电池恒流恒压充电到3.9V-4.0V，使锂离子电池产品控制在3.8V-3.95V，这个状态的电压比较稳定且安全，然而在实际生产过程中，由于柜点异常或电池接触不良等因素，导致电池充放电过程中虚压较大，从而造成分容不准、补电补不满及电池一致性差等问题。针对此问题，通常采用重新上下柜的方法对不良电芯进行重分容，这就造成了制作工序的复杂性，降低了生产效率及成品合格率，尤其是对于电池出货电压要求达到4.18V以上的高压锂离子电池产品，现有常规的分容补电方法更是难以满足高效率生产的要求。As an important part of the new energy field, lithium-ion batteries have become a new hotspot in global economic development. Compared with traditional lead-acid batteries, nickel-metal hydride and nickel-cadmium batteries, lithium-ion batteries have higher specific capacity and longer cycle life. Long, good safety performance, friendly to the environment, has gradually replaced lead-acid batteries and nickel metal hydride, nickel cadmium and other batteries, widely used in mobile phones, notebooks and electric vehicles, etc., with the rapid development of these industries, lithium-ion batteries Production and demand will also increase day by day, with a broad market space. During the manufacturing process of existing lithium-ion batteries, the finished lithium-ion batteries will undergo capacity separation and power replenishment stages before storage or shipment. At present, the conventional lithium-ion battery charging method is to charge the battery with a constant current and constant voltage to 3.9V-4.0V, so that the lithium-ion battery product is controlled at 3.8V-3.95V. The voltage in this state is relatively stable and safe. However, In the actual production process, due to factors such as abnormal cabinet points or poor battery contact, the virtual voltage during the charging and discharging process of the battery is relatively large, resulting in problems such as inaccurate capacity distribution, insufficient power supply and poor battery consistency. In response to this problem, the method of re-loading and re-loading the cabinet is usually used to re-separate the bad batteries, which causes the complexity of the production process, reduces the production efficiency and the qualified rate of finished products, especially for the battery shipment voltage requirement of 4.18V For the above-mentioned high-voltage lithium-ion battery products, it is even more difficult to meet the requirements of high-efficiency production by the existing conventional capacity-dividing power supply method.
发明内容Contents of the invention
为了克服现有技术的不足，本发明的目的在于提供一种高压锂离子电池的分容方法，该方法相对简单，可以消除因分容柜触点接触不良而造成的补电不足，经过该分容方法处理的锂离子电池经过老化后的电池电压仍能达到4.18V以上。In order to overcome the deficiencies in the prior art, the object of the present invention is to provide a method for capacity division of high-voltage lithium-ion batteries. The battery voltage of the lithium-ion battery processed by the capacitance method can still reach more than 4.18V after aging.
为解决上述问题，本发明所采用的技术方案如下：In order to solve the above problems, the technical scheme adopted in the present invention is as follows:
一种高压锂离子电池的分容方法，按步骤依次包括第一充电阶段、放电阶段、第二充电阶段和第三充电阶段，其中第一充电阶段的充电电流为0.02～0.5C、截止电压为4.0～4.2V，第二充电阶段的充电电流为0.5～1.0C、截止电压为4.0～4.2V，第三充电阶段的充电电流为0.02～0.5C、截止电压为4.21～4.23V。A method for dividing the capacity of a high-voltage lithium-ion battery, which includes a first charging stage, a discharging stage, a second charging stage, and a third charging stage in sequence, wherein the charging current of the first charging stage is 0.02～0.5C, and the cut-off voltage is 4.0-4.2V, the charging current of the second charging stage is 0.5-1.0C, the cut-off voltage is 4.0-4.2V, the charging current of the third charging stage is 0.02-0.5C, and the cut-off voltage is 4.21-4.23V.
较佳地，所述放电阶段的放电电流为0.02～0.5C、截止电压为2.8～3.5V。Preferably, the discharge current in the discharge stage is 0.02-0.5C, and the cut-off voltage is 2.8-3.5V.
优选地，所述第一充电阶段的充电电流为0.5C、截止电压为4.2V、截止电流为0.02C，时间限制为90～150min。Preferably, the charging current of the first charging stage is 0.5C, the cut-off voltage is 4.2V, the cut-off current is 0.02C, and the time limit is 90-150min.
优选地，所述第二充电阶段的充电电流为0.5C、截止电压为4.2V、截止电流为0.02C，时间限制为180～250min。Preferably, the charging current of the second charging stage is 0.5C, the cut-off voltage is 4.2V, the cut-off current is 0.02C, and the time limit is 180-250min.
优选地，所述第三充电阶段的具体步骤如下：先以电流0.02～0.5C恒流恒压下充电至4.21V，截止电流为0.02C，静置60min；再以电流0.02～0.5C恒流恒压下充电至4.22V，截止电流为0.02C，静置60min；先以电流0.02～0.5C恒流恒压下充电至4.23V，截止电流为0.02C。Preferably, the specific steps of the third charging stage are as follows: first charge to 4.21V with a current of 0.02-0.5C constant current and constant voltage, the cut-off current is 0.02C, and stand for 60 minutes; then use a current of 0.02-0.5C constant current Charge to 4.22V under constant voltage, with a cut-off current of 0.02C, and let it stand for 60 minutes; first charge it to 4.23V with a current of 0.02-0.5C at a constant current and constant voltage, with a cut-off current of 0.02C.
作为本发明优选的实施方式，本发明所述的分容方法的具体步骤如下：As a preferred embodiment of the present invention, the specific steps of the volume division method described in the present invention are as follows:
a、第一充电阶段：取经化成的电池，以电流0.5C恒流恒压下充电至4.2V，截止电流为0.02C，时间限制为130min，静置5min；a. The first charging stage: take the formed battery, charge it to 4.2V with a current of 0.5C constant current and constant voltage, the cut-off current is 0.02C, the time limit is 130min, and stand for 5min;
b、放电阶段：以电流05C恒流恒压下放电至30V，时间限制为130min，静置5min；b. Discharge stage: Discharge to 30V under constant current and constant voltage of 05C, the time limit is 130min, and stand for 5min;
c、第二充电阶段：以电流0.5C恒流恒压下充电至4.2V，截止电流为0.02C，时间限制为200min，静置60min；c. The second charging stage: charge to 4.2V with a current of 0.5C constant current and constant voltage, the cut-off current is 0.02C, the time limit is 200min, and stand for 60min;
d、第三充电阶段：先以电流0.5C恒流恒压下充电至4.21V，截止电流为0.02C，时间限制为60min，静置60min；再以电流0.5C恒流恒压下充电至4.22V，截止电流为0.02C，时间限制为60min，静置60min；先以电流0.5C恒流恒压下充电至4.23V，截止电流为0.02C，时间限制为60min；d. The third charging stage: first charge to 4.21V with a current of 0.5C constant current and constant voltage, the cut-off current is 0.02C, the time limit is 60min, and stand for 60min; then charge to 4.22V with a current of 0.5C constant current and constant voltage V, the cut-off current is 0.02C, the time limit is 60min, and it stands still for 60min; first charge it to 4.23V with a current of 0.5C constant current and constant voltage, the cut-off current is 0.02C, and the time limit is 60min;
得到分容完成的电池。Obtain the battery with the finished capacity.
相比现有技术，本发明的有益效果在于：Compared with the prior art, the beneficial effects of the present invention are:
本发明所述的高压锂离子电池的分容方法相对简单，可以消除因分容柜触点接触不良而造成的补电不足，经过该分容方法处理的锂离子电池经过老化后的电池电压仍能达到4.18V以上，可以消除因分容柜触点接触不良而造成的补电不足。锂离子电池经过本发明的分容方法分容补电后，使得电池的电压保持比较稳定，衰减很慢，老化3天后电池电压还可以保持在4.18V以上，提高了生产合格率，满足了对高压锂离子电池的出货需求。The capacity division method of the high-voltage lithium-ion battery described in the present invention is relatively simple, and can eliminate the insufficient power supply caused by the poor contact of the contacts of the capacity division cabinet. It can reach more than 4.18V, which can eliminate the insufficient power supply caused by the poor contact of the contacts of the sub-container. After the lithium-ion battery is recharged through the capacity division method of the present invention, the voltage of the battery is kept relatively stable, and the attenuation is very slow. After aging for 3 days, the battery voltage can also be kept above 4.18V, which improves the production pass rate and meets the requirements for Shipment demand for high-voltage lithium-ion batteries.
附图说明Description of drawings
图1为采用本发明所述的分容方法制得的高压锂离子电池与采用常规的分容方法制得的电池经过老化后的电压对比图。Fig. 1 is a voltage comparison diagram after aging of a high-voltage lithium-ion battery prepared by the capacity separation method of the present invention and a battery prepared by a conventional capacity separation method.
具体实施方式detailed description
下面结合附图和具体实施方式对本发明作进一步详细说明。The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.
一种高压锂离子电池的分容方法，按步骤依次包括第一充电阶段、放电阶段、第二充电阶段和第三充电阶段，其中第一充电阶段的充电电流为0.02～0.5C、截止电压为4.0～4.2V，第二充电阶段的充电电流为0.5～1.0C、截止电压为4.0～4.2V，第三充电阶段的充电电流为0.02～0.5C、截止电压为4.21～4.23V。A method for dividing the capacity of a high-voltage lithium-ion battery, which includes a first charging stage, a discharging stage, a second charging stage, and a third charging stage in sequence, wherein the charging current of the first charging stage is 0.02～0.5C, and the cut-off voltage is 4.0-4.2V, the charging current of the second charging stage is 0.5-1.0C, the cut-off voltage is 4.0-4.2V, the charging current of the third charging stage is 0.02-0.5C, and the cut-off voltage is 4.21-4.23V.
较佳地，所述放电阶段的放电电流为0.02～0.5C、截止电压为2.8～3.5V。Preferably, the discharge current in the discharge stage is 0.02-0.5C, and the cut-off voltage is 2.8-3.5V.
优选地，所述第一充电阶段的充电电流为0.5C、截止电压为4.2V、截止电流为0.02C，时间限制为90～150min。Preferably, the charging current of the first charging stage is 0.5C, the cut-off voltage is 4.2V, the cut-off current is 0.02C, and the time limit is 90-150min.
优选地，所述第二充电阶段的充电电流为0.5C、截止电压为4.2V、截止电流为0.02C，时间限制为180～250min。Preferably, the charging current of the second charging stage is 0.5C, the cut-off voltage is 4.2V, the cut-off current is 0.02C, and the time limit is 180-250min.
优选地，所述第三充电阶段的具体步骤如下：先以电流0.02～0.5C恒流恒压下充电至4.21V，截止电流为0.02C，静置60min；再以电流0.02～0.5C恒流恒压下充电至4.22V，截止电流为0.02C，静置60min；先以电流0.02～0.5C恒流恒压下充电至4.23V，截止电流为0.02C。Preferably, the specific steps of the third charging stage are as follows: first charge to 4.21V with a current of 0.02-0.5C constant current and constant voltage, the cut-off current is 0.02C, and stand for 60 minutes; then use a current of 0.02-0.5C constant current Charge to 4.22V under constant voltage, with a cut-off current of 0.02C, and let it stand for 60 minutes; first charge it to 4.23V with a current of 0.02-0.5C at a constant current and constant voltage, with a cut-off current of 0.02C.
实施例1：Example 1:
一种高压锂离子电池的分容方法，其具体步骤如下：A kind of capacity dividing method of high-voltage lithium-ion battery, its concrete steps are as follows:
a、第一充电阶段：取经化成的电池，以电流0.5C恒流恒压下充电至4.2V，截止电流为0.02C，时间限制为130min，静置5min；a. The first charging stage: take the formed battery, charge it to 4.2V with a current of 0.5C constant current and constant voltage, the cut-off current is 0.02C, the time limit is 130min, and stand for 5min;
b、放电阶段：以电流0.5C恒流下放电至3.0V，时间限制为130min，静置5min；b. Discharge stage: Discharge to 3.0V at a constant current of 0.5C, the time limit is 130min, and stand for 5min;
c、第二充电阶段：以电流0.5C恒流恒压下充电至4.2V，截止电流为0.02C，时间限制为200min，静置60min；c. The second charging stage: charge to 4.2V with a current of 0.5C constant current and constant voltage, the cut-off current is 0.02C, the time limit is 200min, and stand for 60min;
d、第三充电阶段：先以电流0.5C恒流恒压下充电至4.21V，截止电流为0.02C，时间限制为60min，静置60min；再以电流0.5C恒流恒压下充电至4.22V，截止电流为0.02C，时间限制为60min，静置60min；先以电流0.5C恒流恒压下充电至4.23V，截止电流为0.02C，时间限制为60min；d. The third charging stage: first charge to 4.21V with a current of 0.5C constant current and constant voltage, the cut-off current is 0.02C, the time limit is 60min, and stand for 60min; then charge to 4.22V with a current of 0.5C constant current and constant voltage V, the cut-off current is 0.02C, the time limit is 60min, and it stands still for 60min; first charge it to 4.23V with a current of 0.5C constant current and constant voltage, the cut-off current is 0.02C, and the time limit is 60min;
得到分容完成的电池。Obtain the battery with the finished capacity.
实施例2：Example 2:
一种高压锂离子电池的分容方法，其具体步骤如下：A kind of capacity dividing method of high-voltage lithium-ion battery, its concrete steps are as follows:
a、第一充电阶段：取经化成的电池，以电流0.05C恒流恒压下充电至4.0V，截止电流为0.02C，时间限制为150min，静置5min；a. The first charging stage: take the formed battery, charge it to 4.0V with a current of 0.05C constant current and constant voltage, the cut-off current is 0.02C, the time limit is 150min, and stand for 5min;
b、放电阶段：以电流0.05C恒流下放电至3.0V，时间限制为150min，静置5min；b. Discharge stage: discharge to 3.0V at a constant current of 0.05C, the time limit is 150min, and stand for 5min;
c、第二充电阶段：以电流1.0C恒流恒压下充电至4.2V，截止电流为0.02C，时间限制为180min，静置60min；c. The second charging stage: charge to 4.2V with a current of 1.0C constant current and constant voltage, the cut-off current is 0.02C, the time limit is 180min, and stand for 60min;
d、第三充电阶段：先以电流0.05C恒流恒压下充电至4.21V，截止电流为0.02C，时间限制为120min，静置60min；再以电流0.5C恒流恒压下充电至4.22V，截止电流为0.02C，时间限制为60min，静置60min；先以电流0.05C恒流恒压下充电至4.23V，截止电流为0.02C，时间限制为120min；d. The third charging stage: first charge to 4.21V with a current of 0.05C constant current and constant voltage, the cut-off current is 0.02C, the time limit is 120min, and stand for 60min; then charge to 4.22V with a current of 0.5C constant current and constant voltage V, the cut-off current is 0.02C, the time limit is 60min, and the time limit is 60min; first charge to 4.23V with a current of 0.05C constant current and constant voltage, the cut-off current is 0.02C, and the time limit is 120min;
得到分容完成的电池。Obtain the battery with the finished capacity.
实施例3：Example 3:
一种高压锂离子电池的分容方法，其具体步骤如下：A kind of capacity dividing method of high-voltage lithium-ion battery, its concrete steps are as follows:
a、第一充电阶段：取经化成的电池，以电流0.05C恒流恒压下充电至4.2V，截止电流为0.02C，时间限制为150min，静置5min；a. The first charging stage: take the formed battery, charge it to 4.2V with a current of 0.05C constant current and constant voltage, the cut-off current is 0.02C, the time limit is 150min, and stand for 5min;
b、放电阶段：以电流0.05C恒流下放电至3.0V，时间限制为180min，静置5min；b. Discharge stage: discharge to 3.0V at a constant current of 0.05C, the time limit is 180min, and stand for 5min;
c、第二充电阶段：以电流0.5C恒流恒压下充电至4.2V，截止电流为0.02C，时间限制为200min，静置60min；c. The second charging stage: charge to 4.2V with a current of 0.5C constant current and constant voltage, the cut-off current is 0.02C, the time limit is 200min, and stand for 60min;
d、第三充电阶段：先以电流0.05C恒流恒压下充电至4.21V，截止电流为0.02C，时间限制为120min，静置60min；再以电流0.05C恒流恒压下充电至4.22V，截止电流为0.02C，时间限制为120min，静置60min；先以电流0.5C恒流恒压下充电至4.23V，截止电流为0.02C，时间限制为60min；d. The third charging stage: first charge to 4.21V with a current of 0.05C constant current and constant voltage, the cut-off current is 0.02C, the time limit is 120min, and stand for 60min; V, the cut-off current is 0.02C, the time limit is 120min, and the time is limited to 60min; first charge to 4.23V with a current of 0.5C constant current and constant voltage, the cut-off current is 0.02C, and the time limit is 60min;
得到分容完成的电池。Obtain the battery with the finished capacity.
对比例：Comparative example:
a、第一充电阶段：取化成好的电池，用电流0.5C恒流恒压充电至4.20V，截止电流0.02C，时间限制为130min，静置5min；a. The first charging stage: Take a good battery, charge it to 4.20V with a current of 0.5C constant current and constant voltage, cut-off current 0.02C, time limit is 130min, and stand for 5min;
b、放电阶段：以电流0.5C恒流放电至3.0V，时间限制为130min，静置5min；b. Discharge stage: discharge to 3.0V with a constant current of 0.5C, the time limit is 130min, and stand for 5min;
c、第二充电阶段：以电流0.5C恒流恒压下充电至4.2V，截止电流为0.02C，时间限制200min，得到分容完成的电池。c. The second charging stage: charge to 4.2V with a current of 0.5C constant current and constant voltage, the cut-off current is 0.02C, and the time limit is 200min, and the battery with capacity division is obtained.
按实施例1的分容方法与上述对比例的分容方法分别制作锂离子电池，分别随机抽取样本200个，将两组样本在相同的工艺下老化3天并测试电池的电压，结果如图1所示。由图1可知，按实施例1所制得的锂离子电池的电压平均值3天后仍达4.18V以上，高于对比组的电压平均值，由此可见，经本发明的分容方法制得的电池能够很好地满足对高压锂离子电池的出货需求。Lithium-ion batteries were made respectively according to the capacity division method of Example 1 and the capacity division method of the above-mentioned comparative example, and 200 samples were randomly selected respectively, and the two groups of samples were aged for 3 days under the same process and the voltage of the battery was tested, the results are shown in the figure 1. As can be seen from Fig. 1, the voltage average value of the lithium ion battery made by embodiment 1 still reaches more than 4.18V after 3 days, which is higher than the voltage average value of the comparison group. The battery can well meet the shipment demand for high-voltage lithium-ion batteries.
上述实施方式仅为本发明的优选实施方式，不能以此来限定本发明保护的范围，本领域的技术人员在本发明的基础上所做的任何非实质性的变化及替换均属于本发明所要求保护的范围。The above-mentioned embodiment is only a preferred embodiment of the present invention, and cannot be used to limit the protection scope of the present invention. Any insubstantial changes and substitutions made by those skilled in the art on the basis of the present invention belong to the scope of the present invention. Scope of protection claimed.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107359376A (en) * | 2017-06-30 | 2017-11-17 | 宁德时代新能源科技股份有限公司 | Battery charging method, device and equipment |
| CN108336434A (en) * | 2018-02-28 | 2018-07-27 | 北京国能电池科技股份有限公司 | The charged partial volume processing method of lithium ion battery and its lithium ion battery obtained |
| CN108539277A (en) * | 2018-03-26 | 2018-09-14 | 南京国轩电池有限公司 | A kind of partial volume method of power-type lithium ion battery |
| CN110911757A (en) * | 2019-10-25 | 2020-03-24 | 合肥国轩高科动力能源有限公司 | Safe capacity grading method for ternary lithium battery |
| CN111710914A (en) * | 2020-06-24 | 2020-09-25 | 河南福森新能源科技有限公司 | Method for improving voltage consistency of high-capacity lithium battery |
| CN113839109A (en) * | 2021-08-17 | 2021-12-24 | 天能帅福得能源股份有限公司 | Method for rapidly grading capacity of lithium ion battery |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101154746A (en) * | 2006-09-28 | 2008-04-02 | 比亚迪股份有限公司 | Formation method for lithium ion secondary battery |
| CN103117412A (en) * | 2013-01-31 | 2013-05-22 | 深圳市海太阳实业有限公司 | Lithium ion battery and formation method thereof |
| CN104409778A (en) * | 2014-11-17 | 2015-03-11 | 东莞市久森新能源有限公司 | Capacity grading method for specially-shaped lithium ion batteries |
-
2016
- 2016-11-29 CN CN201611076666.0A patent/CN106711508B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101154746A (en) * | 2006-09-28 | 2008-04-02 | 比亚迪股份有限公司 | Formation method for lithium ion secondary battery |
| CN103117412A (en) * | 2013-01-31 | 2013-05-22 | 深圳市海太阳实业有限公司 | Lithium ion battery and formation method thereof |
| CN104409778A (en) * | 2014-11-17 | 2015-03-11 | 东莞市久森新能源有限公司 | Capacity grading method for specially-shaped lithium ion batteries |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107359376A (en) * | 2017-06-30 | 2017-11-17 | 宁德时代新能源科技股份有限公司 | Battery charging method, device and equipment |
| CN107359376B (en) * | 2017-06-30 | 2020-06-23 | 宁德时代新能源科技股份有限公司 | Battery charging method, device and equipment |
| CN108336434A (en) * | 2018-02-28 | 2018-07-27 | 北京国能电池科技股份有限公司 | The charged partial volume processing method of lithium ion battery and its lithium ion battery obtained |
| CN108336434B (en) * | 2018-02-28 | 2020-05-19 | 北京国能电池科技股份有限公司 | Lithium ion battery treatment method and lithium ion battery prepared by same |
| CN108539277A (en) * | 2018-03-26 | 2018-09-14 | 南京国轩电池有限公司 | A kind of partial volume method of power-type lithium ion battery |
| CN110911757A (en) * | 2019-10-25 | 2020-03-24 | 合肥国轩高科动力能源有限公司 | Safe capacity grading method for ternary lithium battery |
| CN110911757B (en) * | 2019-10-25 | 2020-11-10 | 合肥国轩高科动力能源有限公司 | Safe capacity grading method for ternary lithium battery |
| CN111710914A (en) * | 2020-06-24 | 2020-09-25 | 河南福森新能源科技有限公司 | Method for improving voltage consistency of high-capacity lithium battery |
| CN113839109A (en) * | 2021-08-17 | 2021-12-24 | 天能帅福得能源股份有限公司 | Method for rapidly grading capacity of lithium ion battery |
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