CN106532131A - Pressure formation method for lithium ion battery - Google Patents
Pressure formation method for lithium ion battery Download PDFInfo
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- CN106532131A CN106532131A CN201611162528.4A CN201611162528A CN106532131A CN 106532131 A CN106532131 A CN 106532131A CN 201611162528 A CN201611162528 A CN 201611162528A CN 106532131 A CN106532131 A CN 106532131A
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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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- 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
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The invention relates to a pressure formation method for a lithium ion battery. The pressure formation method for the lithium ion battery is carried out by the steps of performing thermal insulation and pressure maintaining at the intensity of pressure of 0.8-2.0MPa and at a temperature of 10-85 DEG C for 30-120min, and then performing high-temperature pressurizing shaping and hardening on a cell of the lithium ion battery to improve the hardness of the cell. The problem of insufficient hardness of the battery caused by the fact that the cell is softened easily after a certain standing time when pressure is released in a thermal state condition is solved; and the problem of high probability of deformation in the post repeated charging-discharging use process of the battery is effectively avoided.
Description
Technical field
The present invention relates to technical field of lithium-ion battery, more particularly to a kind of lithium ion battery pressure chemical conversion side
Method.
Background technology
At present, it is fast-developing and wide with electric automobile, various portable electric appts and radio mobile communication equipment
General application, people are for having extended cycle life, energy density is high, operating voltage is high, the lithium ion battery of memory-less effect and environmental protection
Demand increases increasingly.
Lithium ion battery need to pass through chemical conversion step using front.The chemical conversion of lithium ion battery is acted on of both mainly having,
On the one hand, the active material of activated batteries positive and negative electrode, so that battery reaches optimal charging and discharging state.On the other hand, exist
In the formation process of lithium ion battery, there is reduction and decompose in electrode surface, mainly negative terminal surface in organic electrolyte, formed
Fine and close electronic isolation, the solid electrolyte interface film that lithium ion can be conductive, solid electrolyte interface film are referred to as SEI (Solid
Electrolyte Interface) film.As the telescopiny of lithium ion is necessarily via the SEI films being covered on Carbon anode,
Chemical property of the characteristics such as the uniformity and stability of SEI films to whole lithium ion battery, such as method of battery capacity, battery
Draw efficiency, cycle life, self-discharge performance, cryogenic property, stability and security etc. to have a great impact, be to determine lithium
One of major reason of ion battery performance quality.
In order to obtain uniformity and the preferable SEI films of stability, traditional chemical synthesis technology is the change using high temperature high current
Into technique, high temperature high current into main flow be：Under the high temperature conditions, lithium ion battery is carried out high current into, with
Afterwards, cooling down is carried out to completing the battery being melted into, take shorter.However, the lithium ion battery of above-mentioned chemical synthesis technology production
Battery core stands a period of time and easily feels like jelly after shedding pressure, the not enough problem of battery hardness occur, cause battery the later stage repeatedly
It is easily deformed during the use of discharge and recharge.
The content of the invention
Based on this, it is necessary to shed one section of standing after pressure for the battery core of the lithium ion battery of tradition chemical conversion technique productions
After time, hardness is not enough, the technical problem for causing battery to be easily deformed during the use of later stage repeated charge, there is provided
Plant lithium ion battery pressure chemical synthesizing method.
A kind of lithium ion battery pressure chemical synthesizing method, comprises the following steps：
S110：Under the first preset temperature and the first default pressure, using 0.03CmA～0.06CmA electric currents to lithium ion
Battery carries out constant-current charge, and the charging interval is 4min～6min；
S120：Under the second preset temperature and the second default pressure, using 0.1CmA～0.3CmA electric currents to the lithium from
Sub- battery carries out constant-current charge, and the charging interval is 4min～6min；
S130：Under the 3rd preset temperature and the 3rd default pressure, using 0.9CmA～1.1CmA electric currents to the lithium from
Sub- battery carries out constant-current charge, and the charging interval is 55min～66min；
S140：Under the 4th preset temperature and the 4th default pressure, using 0.09CmA～0.11CmA electric currents to the lithium
Ion battery carries out constant-current charge, and the charging interval is 30min～35min；
S150：Under the 5th preset temperature and the 5th default pressure, the lithium ion battery to completing constant-current charge enters
Row heat-insulation pressure keeping 30min～120min；
Wherein, the 5th preset temperature is 10 DEG C～85 DEG C, and the described 5th default pressure is 0.8MPa～2.0MPa,
In S110, S120, S130 and S140, the upper voltage limit of constant-current charge is less than or equal to highest charge cutoff voltage.
Wherein in one embodiment, the described 5th default pressure is 0.98MPa～1.8MPa.
Wherein in one embodiment, the 5th preset temperature is 45 DEG C～75 DEG C.
Wherein in one embodiment, first preset temperature, second preset temperature, the 3rd preset temperature
And the 4th preset temperature is 10 DEG C～85 DEG C.
Wherein in one embodiment, the described first default pressure and the second default pressure be 0.08MPa～
0.12MPa。
Wherein in one embodiment, the described 3rd default pressure and the 4th default pressure be 0.6MPa～
1.2MPa。
Wherein in one embodiment, the highest charge cutoff voltage is 4.2V～4.4V.
Wherein in one embodiment, the highest charge cutoff voltage is 4.2V, 4.35V or 4.4V.
Wherein in one embodiment, before step S110, also comprise the steps：0.05MPa～0.12MPa's
Under pressure, the lithium ion battery is carried out into dormancy process.
Wherein in one embodiment, the time of dormancy is 4min～6min.
Above-mentioned lithium ion battery pressure chemical synthesizing method, under the pressure of 0.8MPa～2.0MPa, in 10 DEG C～85 DEG C of temperature
Under degree, heat-insulation pressure keeping 30min～120min carries out high-temperature pressurizing shaping hardening to the battery core of lithium ion battery so that battery core is hard
Degree is lifted, solve battery core it is hot in the case of shed pressure after stand a period of time and easily feel like jelly, there is battery hardness not enough
Problem, effectively prevent the problem appearance that battery is easily deformed during the use of later stage repeated charge.
Description of the drawings
Fig. 1 is the schematic flow sheet of the lithium ion battery pressure chemical synthesizing method of an embodiment.
Specific embodiment
It is understandable to enable the above objects, features and advantages of the present invention to become apparent from, below in conjunction with the accompanying drawings to the present invention
Specific embodiment be described in detail.Elaborate many details in order to fully understand this in the following description
It is bright.But the present invention can be implemented with being much different from alternate manner described here, and those skilled in the art can be not
Similar improvement is done in the case of running counter to intension of the present invention, therefore the present invention is not limited by following public specific embodiment.
In describing the invention, it is to be understood that term " first ", " second " are only used for describing purpose, and can not
It is interpreted as indicating or implying relative importance or the implicit quantity for indicating indicated technical characteristic.Thus, define " the
One ", at least one this feature can be expressed or be implicitly included to the feature of " second ".In describing the invention, " multiple "
It is meant that at least two, such as two, three etc., unless otherwise expressly limited specifically.
Lithium ion battery pressure chemical synthesizing method according to embodiments of the present invention is described below in conjunction with the accompanying drawings.
As shown in figure 1, the lithium ion battery pressure chemical synthesizing method of an embodiment comprises the steps：
S110：Under the first preset temperature and the first default pressure, using 0.03CmA～0.06CmA electric currents to lithium ion
Battery carries out constant-current charge, and the charging interval is 4min～6min.
It should be noted that fluid injection step of the lithium ion battery before chemical conversion step for lithium ion battery.So, opening
During the chemical conversion step that begins, in the battery core of lithium ion battery, there is the unnecessary electrolyte in unnecessary gas and part.It is follow-up in order to prevent
In chemical conversion step at high temperature under high pressure, the unnecessary electrolyte in unnecessary gas and part bursts the forward position of battery core, in chemical conversion step
Suddenly before starting, under the pressure of 0.05MPa～0.12MPa, lithium ion battery is carried out into dormancy process, the time of dormancy is
4min～6min, discharges the unnecessary electrolyte in unnecessary gas and part in lithium ion battery core body in advance, prevents follow-up in height
In chemical conversion step under warm high pressure, the unnecessary electrolyte in unnecessary gas and part bursts the forward position of battery core.Wherein, dormancy is referred to
In chemical conversion step show as not doing charge or discharge, in the present embodiment, show as not doing and charge.
In this step, lithium ion battery is put in pressure formation device, in the first preset temperature and the first default pressure
It is melted under strong environment, constant-current charge, charging interval is carried out to lithium ion battery using 0.03CmA～0.06CmA electric currents
For 4min～6min, the upper voltage limit for reaching is 3.4V～3.8V, less than highest charge cutoff voltage 4.2V～4.4V.Pass through
S110, can release inside lithium ion cell major part gas, for example：CO、CO2、CH4、C2H4Deng.Wherein, pressure formation device
For the pressure formation device being usually used in prior art.Wherein, abbreviations of the C for battery capacity capacity in CmA, mA are electricity
Stream unit milliampere, for example, 0.03CmA～0.06CmA electric currents carry out constant-current charge to lithium ion battery and are expressed as：With 0.03
The electric current of electric current～0.06 amount of capacity of individual amount of capacity carries out constant-current charge to lithium ion battery.
For example, the first preset temperature is 10 DEG C～85 DEG C.And for example, the first preset temperature is 20 DEG C～55 DEG C.And for example, first
Preset temperature is 40 DEG C～60 DEG C.It should be noted that when temperature is too low, during less than 10 DEG C, being easily caused in lithium ion battery
Portion's gas is released incomplete situation and is occurred.When temperature is too high, during higher than 85 DEG C, inside lithium ion cell generation is easily caused different
Gross chemistry reacts, and then causes the problems such as battery temperature is raised extremely, electrolyte fails to occur.
For example, the first default pressure is 0.08MPa～0.12MPa.And for example, the first default pressure be 0.09MPa～
0.1MPa.And for example, the first default pressure is 0.88MPa～0.11MPa.It should be noted that when pressure is too low, being less than
0.08MPa, is easily caused chemical conversion and takes long, the low problem appearance of production efficiency.When pressure it is too high, higher than 0.12MPa, no
Best technological effect can be reached.
For example, at a temperature of 10 DEG C～85 DEG C, under 0.08MPa～0.12MPa pressure, using 0.03CmA～0.06CmA
Electric current carries out constant-current charge to lithium ion battery, by said temperature, the reasonable setting of three technological parameters of pressure and electric current, fills
The electric time is only 4min～6min, just can release inside lithium ion cell major part gas, highly shortened the time-consuming of S110,
Improve production efficiency.
S120：Under the second preset temperature and the second default pressure, using 0.1CmA～0.3CmA electric currents to the lithium from
Sub- battery carries out constant-current charge, and the charging interval is 4min～6min.
For example, it is at a temperature of 10 DEG C～85 DEG C, under 0.08MPa～0.12MPa pressure, electric using 0.1CmA～0.3CmA
Stream carries out constant-current charge to the lithium ion battery, and the charging interval is 4min～6min, proceeds chemical conversion, in formation process
In, the upper voltage limit for reaching is 3.4V～3.8V, less than highest charge cutoff voltage 4.2V～4.4V, inside lithium ion cell material
Material starts activation, and preliminarily forms SEI films.
Wherein, by using 0.1CmA～0.3CmA electric currents so that the depths that lithium ion can be substantially embedded into negative pole is empty
Cave, forms preliminary SEI films, and then it is finer and close to enable to the SEI films of follow-up generation.It is placed in by making lithium ion battery
Under 0.08MPa～0.12MPa pressure, the speed of material activation is can speed up, is preferably shortened the time-consuming of S120, and then can be carried
High efficiency.
By the reasonable setting of the multinomial technological parameter such as said temperature, pressure and electric current, work in coordination so that in S120,
Lithium ion can be substantially embedded into the depths hole of negative pole, form preliminary SEI films, and then enable to the SEI of follow-up generation
Film is finer and close, meanwhile, preferably described chemical conversion it is time-consuming, improve production efficiency.
S130：Under the 3rd preset temperature and the 3rd default pressure, using 0.9CmA～1.1CmA electric currents to the lithium from
Sub- battery carries out constant-current charge, and the charging interval is 55min～66min.
For example, at a temperature of 10 DEG C～85 DEG C, under 0.6MPa～1.2MPa pressure, using 0.9CmA～1.1CmA electric currents
Constant-current charge is carried out to the lithium ion battery, the charging interval is 55min～66min, proceeds chemical conversion, in formation process
In, the upper voltage limit for reaching is about highest charge cutoff voltage 4.2V～4.4V, and inside lithium ion cell material is fully activated, shape
Into SEI films.Meanwhile, while forming SEI films, the gas produced with side reaction is discharged in time, it is to avoid these gases are in electricity
Core inner accumulation causes battery core bulging, casing deformation, even produces the situation generation of blast, it is ensured that the electrical property and peace of battery core
Full performance.
Specifically, in S130 formation processes, apply 0.6MPa～1.2MPa pressure in the relative two sides of battery core, together
When, heat temperature raising, temperature in the case where ensureing that battery core inner pole piece interface is good, are carried out big in the range of 10 DEG C～85 DEG C
Electric current constant-current charge, charging interval are 55min～66min, for example with 0.9CmA～1.1CmA electric currents to the lithium-ion electric
Pond carries out constant-current charge.By applying pressure in the relative two sides of battery core, it is to avoid produce during with high current constant-current charge
Polarize and the generation of caused charging problem of non-uniform, uniform SEI films can be formed in negative terminal surface.
S140：Under the 4th preset temperature and the 4th default pressure, using 0.09CmA～0.11CmA electric currents to the lithium
Ion battery carries out constant-current charge, and the charging interval is 30min～35min.
In order to ensure the SEI film complete stabilities of lithium ion battery cell negative terminal surface, for example, will complete the lithium of S130 from
Sub- battery at a temperature of 10 DEG C～85 DEG C, under 0.6MPa～1.2MPa pressure, using 0.09CmA～0.11CmA electric currents to institute
Stating lithium ion battery carries out constant-current charge, and the charging interval is 30min～35min, proceeds chemical conversion, in formation process, reaches
The upper voltage limit for arriving is about highest charge cutoff voltage 4.2V～4.4V, thus it is ensured that lithium ion battery cell negative terminal surface
SEI film complete stabilities, with side reaction produce gas be completely exhausted out.
The battery core phase that the battery core of the lithium ion battery obtained by above-mentioned chemical conversion step is charged with traditional small current long-time
Than electrical property is similar, even preferably, but it is possible to greatly shorten pre-charging time, improves process efficiency, and reduction is produced into
This.
S150：Under the 5th preset temperature and the 5th default pressure, the lithium ion battery to completing constant-current charge enters
Row heat-insulation pressure keeping 30min～120min, wherein, the 5th preset temperature is 10 DEG C～85 DEG C, and the described 5th default pressure is
0.8MPa～2.0MPa.
It should be noted that after lithium battery completes chemical conversion, immediately battery is taken from chemical conversion environment or formation device
Go out, battery core stands a period of time and easily feels like jelly after shedding pressure in the case of hot, it is not enough battery hardness occur, causes battery to exist
It is easily deformed during the use of later stage repeated charge.
In order to solve the above problems, in the present embodiment, the 5th in 0.8MPa～2.0MPa is preset under pressure, at 10 DEG C
Under～85 DEG C of the 5th preset temperature, by the lithium ion battery the continuous heat-insulation pressure keeping 30min of pressure formation device relaying～
120min, carries out high-temperature pressurizing shaping hardening to the battery core of lithium ion battery so that battery core hardness is lifted, and stands a period of time
Still keep preferable hardness afterwards, solve battery core it is hot in the case of shed pressure after stand a period of time easily feel like jelly, occur electricity
The not enough problem of pond hardness, effectively prevent the problem that battery is easily deformed during the use of later stage repeated charge and goes out
It is existing.
For example, the 5th default pressure is 0.89MPa～1.0MPa.And for example, the 5th default pressure be 0.98MPa～
1.8MPa.It should be noted that work as hypotony, during less than 0.8MPa, it is impossible to reach preferable hardening effect, when pressure mistake
Height, during higher than 2.0MPa, easily occur pressure it is excessive and damage battery core situation.When pressure is between 0.8MPa～2.0MPa
When, can avoid damaging battery core, and enable battery core to reach preferable hardening effect.
For example, the 5th preset temperature is 30 DEG C～50 DEG C.And for example, the 5th preset temperature is 45 DEG C～75 DEG C, when temperature mistake
It is low, during less than 10 DEG C, it is impossible to reach preferable hardening effect.When temperature is too high, during higher than 85 DEG C, lithium ion battery is easily caused
It is internal that abnormal chemical reactions occur, and then cause the problems such as battery temperature is raised extremely, electrolyte fails to occur.When temperature is in
When 10 DEG C～85 DEG C, preferable hardening effect can either be reached, can avoid inside lithium ion cell that abnormal chemical occurs again anti-
Should.By the reasonable setting of two technological parameters of said temperature and pressure, work in coordination, it is ensured that battery core is shaped so that battery core
Hardness is lifted well, and heat-insulation pressure keeping remains to keep preferable hardness for a period of time afterwards, and then can avoid the later stage repeatedly
Situation about deforming after discharge and recharge occurs.
Additionally, in conventional art, on pressure formation device, additional configuration is colded pressing module, guarantees that by colding pressing battery core is fixed
Type, so, undoubtedly increased equipment cost.In the present embodiment, it is not necessary to extra to increase module of colding pressing, using without module of colding pressing
Pressure formation device, 0.8MPa～2.0MPa the 5th preset pressure under, under 10 DEG C～85 DEG C of the 5th preset temperature,
By the lithium ion battery in the continuous heat-insulation pressure keeping 30min～120min of pressure formation device relaying, the battery core to lithium ion battery
High-temperature pressurizing shaping hardening is carried out, not only guarantees that battery core hardness meets technological standards, prevent lithium ion battery from subsequently using
Deform after repeated charge in journey phenomenon, additionally it is possible to preferably saves equipment cost.
And for example, first preset temperature, second preset temperature, the 3rd preset temperature and the described 4th preset
Temperature is identical；And for example, first preset temperature, second preset temperature, the 3rd preset temperature and described 4th pre-
If temperature is 10 DEG C～85 DEG C.For example, first preset temperature, second preset temperature, the 3rd preset temperature
And the 4th preset temperature is 25 DEG C, 30 DEG C, 35 DEG C, 40 DEG C, 45 DEG C, 50 DEG C or 55 DEG C；And for example, the described first default pressure
The strong and second default pressure is identical；And for example, the described 3rd default pressure and the 4th default pressure are identical；For example, institute
The first default pressure is stated less than the described 3rd default pressure.
Above-mentioned lithium ion battery pressure chemical synthesizing method, forms uniform and stable SEI in negative terminal surface by lithium ion battery
After film, under the pressure of 0.8MPa～2.0MPa, at a temperature of 10 DEG C～85 DEG C, heat-insulation pressure keeping 30min～120min, to lithium
The battery core of ion battery carries out high-temperature pressurizing shaping hardening so that battery core hardness lifted, and stand a period of time after still keep compared with
Good hardness, solve battery core it is hot in the case of shed pressure after stand a period of time and easily feel like jelly, there is battery hardness not enough
Problem, effectively prevent the problem that battery is easily deformed during the use of later stage repeated charge and occur.
It is specific embodiment below：
Embodiment 1：
Step 1：Lithium ion battery is put in pressure formation device, under the pressure of 0.05MPa, lithium ion battery is entered
Row dormancy, the time of dormancy is 4min；
Step 2：At a temperature of 40 DEG C, under the pressure of 0.09MPa, using 0.03CmA electric currents to complete the lithium of step 1 from
Sub- battery carries out constant-current charge, and the charging interval is 4min, and in formation process, the upper voltage limit for reaching is 3.4V～3.8V, low
In highest charge cutoff voltage 4.2V～4.4V.
Step 3：The lithium ion battery of step 2 will be completed, at a temperature of 40 DEG C, under 0.08MPa pressure, using 0.1CmA
Electric current carries out constant-current charge to lithium ion battery, and the charging interval is 4min, and in formation process, the upper voltage limit for reaching is 3.4V
～3.8V, less than highest charge cutoff voltage 4.2V～4.4V.
Step 4：The lithium ion battery of step 3 will be completed at a temperature of 50 DEG C, it is under 0.8MPa pressure, electric using 0.9CmA
Stream carries out constant-current charge to the lithium ion battery, and the charging interval is 58min, and in formation process, the upper voltage limit for reaching is about
For highest charge cutoff voltage 4.2V～4.4V.
Step 5：The lithium ion battery of step 4 will be completed at a temperature of 50 DEG C, under 0.9MPa pressure, using 0.09CmA
Electric current carries out constant-current charge to the lithium ion battery, and the charging interval is 31min, in formation process, the upper voltage limit for reaching
About highest charge cutoff voltage 4.2V～4.4V.
Step 6：Under the pressure of 0.89MPa, at a temperature of 75 DEG C, the lithium ion battery of step 5 will be completed in pressure
The continuous heat-insulation pressure keeping 40min of formation device relaying.
Embodiment 2：
Step 1：Lithium ion battery is put in pressure formation device, under the pressure of 0.1MPa, lithium ion battery is entered
Row dormancy, the time of dormancy is 5min；
Step 2：At a temperature of 55 DEG C, under the pressure of 0.88MPa, using 0.04CmA electric currents to complete the lithium of step 1 from
Sub- battery carries out constant-current charge, and the charging interval is 5min, and in formation process, the upper voltage limit for reaching is 3.4V～3.8V, low
In highest charge cutoff voltage 4.2V～4.4V.
Step 3：The lithium ion battery of step 2 will be completed, at a temperature of 55 DEG C, under 0.88MPa pressure, using 0.2CmA
Electric current carries out constant-current charge to lithium ion battery, and the charging interval is 5min, and in formation process, the upper voltage limit for reaching is 3.4V
～3.8V, less than highest charge cutoff voltage 4.2V～4.4V.
Step 4：The lithium ion battery of step 3 will be completed at a temperature of 55 DEG C, under 1MPa pressure, using 1CmA electric currents pair
The lithium ion battery carries out constant-current charge, and the charging interval is 60min, and in formation process, the upper voltage limit for reaching is about most
High charge blanking voltage 4.2V～4.4V.
Step 5：The lithium ion battery of step 4 will be completed at a temperature of 60 DEG C, under 1MPa pressure, using 0.1CmA electric currents
Constant-current charge is carried out to the lithium ion battery, the charging interval is 32min, in formation process, the upper voltage limit for reaching is about
Highest charge cutoff voltage 4.2V～4.4V.
Step 6：Under the pressure of 1.0MPa, at a temperature of 45 DEG C, the lithium ion battery of step 5 will be completed in pressure
The continuous heat-insulation pressure keeping 80min of forming apparatus relaying.
Embodiment 3：
Step 1：Lithium ion battery is put in pressure formation device, under the pressure of 0.11MPa, lithium ion battery is entered
Row dormancy, the time of dormancy is 5.5min；
Step 2：At a temperature of 75 DEG C, under the pressure of 0.1MPa, using 0.05CmA electric currents to complete the lithium of step 1 from
Sub- battery carries out constant-current charge, and the charging interval is 5.5min, and in formation process, the upper voltage limit for reaching is 3.4V～3.8V,
Less than highest charge cutoff voltage 4.2V～4.4V.
Step 3：The lithium ion battery of step 2 will be completed, at a temperature of 75 DEG C, under 0.88MPa pressure, using 0.2CmA
Electric current carries out constant-current charge to lithium ion battery, and the charging interval is 5min, and in formation process, the upper voltage limit for reaching is 3.4V
～3.8V, less than highest charge cutoff voltage 4.2V～4.4V.
Step 4：The lithium ion battery of step 3 will be completed at a temperature of 55 DEG C, under 1MPa pressure, using 1CmA electric currents pair
The lithium ion battery carries out constant-current charge, and the charging interval is 60min, and in formation process, the upper voltage limit for reaching is about most
High charge blanking voltage 4.2V～4.4V.
Step 5：The lithium ion battery of step 4 will be completed at a temperature of 60 DEG C, under 1MPa pressure, using 0.1CmA electric currents
Constant-current charge is carried out to the lithium ion battery, the charging interval is 32min, in formation process, the upper voltage limit for reaching is about
Highest charge cutoff voltage 4.2V～4.4V.
Step 6：Under the pressure of 0.98MPa, at a temperature of 50 DEG C, the lithium ion battery of step 5 will be completed in pressure
The continuous heat-insulation pressure keeping 110min of formation device relaying.
Embodiment 4：
Step 1：Lithium ion battery is put in pressure formation device, under the pressure of 0.12MPa, lithium ion battery is entered
Row dormancy, the time of dormancy is 4.5min；
Step 2：At a temperature of 80 DEG C, under the pressure of 0.12MPa, using 0.06CmA electric currents to complete the lithium of step 1 from
Sub- battery carries out constant-current charge, and the charging interval is 4.5min, and in formation process, the upper voltage limit for reaching is 3.4V～3.8V,
Less than highest charge cutoff voltage 4.2V～4.4V.
Step 3：The lithium ion battery of step 2 will be completed, at a temperature of 80 DEG C, under 0.12MPa pressure, using 0.3CmA
Electric current carries out constant-current charge to lithium ion battery, and the charging interval is 6min, and in formation process, the upper voltage limit for reaching is 3.4V
～3.8V, less than highest charge cutoff voltage 4.2V～4.4V.
Step 4：The lithium ion battery of step 3 will be completed at a temperature of 80 DEG C, it is under 1.1MPa pressure, electric using 1.1CmA
Stream carries out constant-current charge to the lithium ion battery, and the charging interval is 60min, and in formation process, the upper voltage limit for reaching is about
For highest charge cutoff voltage 4.2V～4.4V.
Step 5：The lithium ion battery of step 4 will be completed at a temperature of 80 DEG C, under 1.1MPa pressure, using 0.11CmA
Electric current carries out constant-current charge to the lithium ion battery, and the charging interval is 35min, in formation process, the upper voltage limit for reaching
About highest charge cutoff voltage 4.2V～4.4V.
Step 6：Under the pressure of 1.8MPa, at a temperature of 70 DEG C, the lithium ion battery of step 5 will be completed in pressure
The continuous heat-insulation pressure keeping 100min of forming apparatus relaying.
To the battery core of lithium ion battery that obtains in embodiment 1 to embodiment 4 and not through the lithium ion of heat-insulation pressure keeping
The comparative example of the battery core of battery carries out hardness test.Specifically method of testing is：On the height of 1.5m, by quality for 134g's
Steel ball, by way of freely falling body is pounded steel ball to battery core surface, and measurement steel ball pounds out pit in lithium ion battery surface
Diameter, is reacted the size of battery core hardness by the numerical values recited of diameter, and the numerical value of diameter is less, and the hardness of battery core is bigger.
In order to obtain accurate test result, using repeatedly measure the method averaged come to embodiment 1 to enforcement
The battery core of the lithium ion battery obtained in example 4 and not through HTHP heat-insulation pressure keeping lithium ion battery battery core contrast
Example carries out hardness test, and specific test result is as shown in table 1 below：
1 test result contrast table of table
Substantially can know from table 1, the battery core obtained in embodiment 1, embodiment 2, embodiment 3 and embodiment 4 is in hardness
In test experiments, the numerical value of the diameter that steel ball is pounded out be significantly less than the battery core that obtained by prior art by steel ball pound out it is straight
Footpath, the battery core of the hardness of the battery core obtained in illustrating embodiment 1, embodiment 2, embodiment 3 and embodiment 4 apparently higher than comparative example
Hardness, preferably solve the problems, such as that battery core hardness is not enough in prior art, and then be prevented effectively from later stage repeated charge
Use during cause the problem that battery core is easily deformed.
Each technical characteristic of embodiment described above arbitrarily can be combined, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope of this specification record is all considered to be.
Embodiment described above only expresses the several embodiments of the present invention, and its description is more concrete and detailed, but and
Therefore can not be construed as limiting the scope of the patent.It should be pointed out that for one of ordinary skill in the art comes
Say, without departing from the inventive concept of the premise, some deformations and improvement can also be made, these belong to the protection of the present invention
Scope.Therefore, the protection domain of patent of the present invention should be defined by claims.
Claims (10)
1. a kind of lithium ion battery pressure chemical synthesizing method, it is characterised in that comprise the following steps：
S110：Under the first preset temperature and the first default pressure, using 0.03CmA～0.06CmA electric currents to lithium ion battery
Constant-current charge is carried out, the charging interval is 4min～6min；
S120：Under the second preset temperature and the second default pressure, using 0.1CmA～0.3CmA electric currents to the lithium-ion electric
Pond carries out constant-current charge, and the charging interval is 4min～6min；
S130：Under the 3rd preset temperature and the 3rd default pressure, using 0.9CmA～1.1CmA electric currents to the lithium-ion electric
Pond carries out constant-current charge, and the charging interval is 55min～66min；
S140：Under the 4th preset temperature and the 4th default pressure, using 0.09CmA～0.11CmA electric currents to the lithium ion
Battery carries out constant-current charge, and the charging interval is 30min～35min；
S150：Under the 5th preset temperature and the 5th default pressure, the lithium ion battery to completing constant-current charge is protected
Warm pressurize 30min～120min；
Wherein, the 5th preset temperature is 10 DEG C～85 DEG C, and the described 5th presets pressure for 0.8MPa～2.0MPa, S110,
In S120, S130 and S140, the upper voltage limit of constant-current charge is less than or equal to highest charge cutoff voltage.
2. lithium ion battery pressure chemical synthesizing method according to claim 1, it is characterised in that the described 5th default pressure is
0.98MPa～1.8MPa.
3. lithium ion battery pressure chemical synthesizing method according to claim 1, it is characterised in that the 5th preset temperature is
45 DEG C～75 DEG C.
4. lithium ion battery pressure chemical synthesizing method according to claim 1, it is characterised in that first preset temperature,
Second preset temperature, the 3rd preset temperature and the 4th preset temperature are 10 DEG C～85 DEG C.
5. lithium ion battery pressure chemical synthesizing method according to claim 1, it is characterised in that the described first default pressure and
Described second default pressure is 0.08MPa～0.12MPa.
6. lithium ion battery pressure chemical synthesizing method according to claim 1, it is characterised in that the described 3rd default pressure and
Described 4th default pressure is 0.6MPa～1.2MPa.
7. lithium ion battery pressure chemical synthesizing method according to claim 1, it is characterised in that the highest charge cutoff electricity
Press as 4.2V～4.4V.
8. lithium ion battery pressure chemical synthesizing method according to claim 7, it is characterised in that the highest charge cutoff electricity
Press as 4.2V, 4.35V or 4.4V.
9. lithium ion battery pressure chemical synthesizing method according to claim 1, it is characterised in that before step S110, also
Comprise the steps：
Under the pressure of 0.05MPa～0.12MPa, the lithium ion battery is carried out into dormancy process.
10. lithium ion battery pressure chemical synthesizing method according to claim 9, it is characterised in that the time of dormancy is 4min
～6min.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20000042002A (en) * | 1998-12-24 | 2000-07-15 | 김순택 | Formation and aging method of a secondary lithium battery |
| CN102593520A (en) * | 2012-02-20 | 2012-07-18 | 宁德新能源科技有限公司 | Method for improving hardness of lithium ion cell |
| CN105406129A (en) * | 2015-11-06 | 2016-03-16 | 珠海光宇电池有限公司 | Formation method of lithium ion battery |
| CN105406130A (en) * | 2015-11-30 | 2016-03-16 | 山东精工电子科技有限公司 | Soft package lithium-ion battery formation method |
| CN105489943A (en) * | 2015-11-25 | 2016-04-13 | 百顺松涛（天津）动力电池科技发展有限公司 | Lithium-ion battery formation method |
| CN106207293A (en) * | 2016-07-25 | 2016-12-07 | 珠海光宇电池有限公司 | The chemical synthesizing method of lithium ion battery |
-
2016
- 2016-12-15 CN CN201611162528.4A patent/CN106532131A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20000042002A (en) * | 1998-12-24 | 2000-07-15 | 김순택 | Formation and aging method of a secondary lithium battery |
| CN102593520A (en) * | 2012-02-20 | 2012-07-18 | 宁德新能源科技有限公司 | Method for improving hardness of lithium ion cell |
| CN105406129A (en) * | 2015-11-06 | 2016-03-16 | 珠海光宇电池有限公司 | Formation method of lithium ion battery |
| CN105489943A (en) * | 2015-11-25 | 2016-04-13 | 百顺松涛（天津）动力电池科技发展有限公司 | Lithium-ion battery formation method |
| CN105406130A (en) * | 2015-11-30 | 2016-03-16 | 山东精工电子科技有限公司 | Soft package lithium-ion battery formation method |
| CN106207293A (en) * | 2016-07-25 | 2016-12-07 | 珠海光宇电池有限公司 | The chemical synthesizing method of lithium ion battery |
Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108808095A (en) * | 2017-04-30 | 2018-11-13 | 深圳格林德能源有限公司 | A kind of polymer Li-ion battery rapid forming method |
| CN107195885A (en) * | 2017-06-01 | 2017-09-22 | 维动新能源股份有限公司 | A kind of carbon nanotube polymer lithium ion battery and preparation method thereof |
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| CN107910592A (en) * | 2017-10-10 | 2018-04-13 | 珠海格力电器股份有限公司 | Formation method of lithium ion battery and lithium ion battery |
| CN108110350A (en) * | 2017-12-18 | 2018-06-01 | 惠州Tcl金能电池有限公司 | Lithium ion battery pressure chemical synthesizing method |
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| CN112582698B (en) * | 2020-12-15 | 2022-07-15 | 惠州市恒泰科技股份有限公司 | Lithium ion battery and parallel formation method thereof |
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| CN114695989B (en) * | 2020-12-29 | 2023-12-15 | 双登集团股份有限公司 | Method for improving performance of lithium ion battery |
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