CN103457002A - Lithium ion battery storage or transportation method - Google Patents
Lithium ion battery storage or transportation method Download PDFInfo
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Abstract
The invention relates to a lithium ion battery storage or transportation method, belongs to the secondary battery field, and particularly relates to the lithium ion battery storage or transportation method in the storage and transportation of lithium ion battery cores and packs. Before storage or transportation of lithium ion batteries, the lithium ion batteries are charged and discharged to enable the states of charge of the lithium ion batteries to be 1%-15%, then the lithium ion batteries are put in the environment of the temperature of -20 DEG C to 40 DEG C and the relative humidity of 1%-99% for storage or transportation, the states of charge of the lithium ion batteries are low, potential safety hazard is small, the security is high, in low states of charge, serious electric leakage batteries can be easily found and removed, the quality levels of shipment batteries can be improved, the battery cores are stored in the low states of charge, before group matching, battery cores in a same voltage grade are selected for group matching, self power consumption differences among the battery cores in a same group can be controlled, the battery packs with high consistency and high reliability can be assembled. The lithium ion battery storage or transportation method is safe, fast and simple, and is easy to operate in actual application, and has good market application prospects.
Description
Technical field
The method of a kind of lithium ion battery storage of the present invention or transportation belongs to the secondary cell field, particularly relates to the method that lithium ion battery cell and the battery pack a kind of lithium ion battery in storing and transporting stores or transports.
Background technology
All lithium ion batteries circulate and use from producing to, all have storage and the transportation of battery, and following lithium ion battery comprises lithium ion battery cell and lithium ion battery group.How lithium ion battery is stored or is transported, and has some diverse ways.
The Chinese patent application that application number is 201010128558.X " a kind of method that improves stability of LiMnO secondary lithium ion battery ", described method comprises LiMnO secondary lithium ion battery under the depth of charge condition of 50%SOC-70%SOC, or stores under the stored voltage condition of 3.95-4.05V.Can improve the stability of LiMnO secondary lithium ion battery, suppress lithium manganate cell volume decay to a certain extent.
The test of State Standard of the People's Republic of China's " cell phone lithium ion battery general specification " about storing: battery or battery pack are stored front full charging, with 0.2C
5the A 2.5h that discharges, control chargedly 50%, and 40 ℃ ± 2 ℃ of ambient temperatures, relative humidity is higher than storing 90 days in 75% environment.
People's Republic of China's light industry standard " the automobile-used lithium-ions battery of electrical salf-walking and batteries general specification " is about the test of shelf characteric: fill 50%～60% capacity before storage, 40 ℃ ± 5 ℃ of ambient temperatures, the environment of relative humidity 45%～75% is stored 90 days.
Lithium ion battery for cobalt acid lithium commonly used-graphite system, the common understanding of people is: the self-discharge phenomenon that lithium ion battery exists, if cell voltage stores for a long time below 3.6V, can cause battery over-discharge and destroy the inside battery structure, reduce battery life; Therefore the lithium ion battery of long preservation should be mended electricity once in every 3 ~ 6 months, and being charged to voltage is that 3.8 ~ 3.9V(lithium ion battery Optimum storage voltage is about 3.85V), remain on the 40%-60% depth of discharge and be advisable, should not be full of; Battery should be stored in the dry environment of 4 ℃ ~ 35 ℃ or damp-prrof packing; Want stow away from heat, also be not placed in the place of direct sunlight.
Mostly all disclosed storing technologies, the interior physical holding of the stock way of the industry that we recognize, be the charged 40%-60% of lithium ion battery is stored or transports.
Present battery warehouse or means of transportation, deposit the lithium ion battery of a large amount of charged 40%-60%, and electric leakage battery bigger than normal may be arranged in these batteries, store or transportation in heat accumulation occurs and electric leakage is accelerated; Also presumable battery diaphragm part is in critical condition, store or transportation in because variations in temperature, electrode expand with heat and contract with cold, barrier film shrinks and sends out inside life short circuit; Perhaps pole piece corner or burr are stabbed barrier film, in storage or transportation, because ambient temperature alternately changes, cause internal short-circuit, are easy to occur thermal runaway.Lithium ion battery has obtained applying more and more widely as power supply, and the capacity requirement of battery is also more and more higher, especially as the electrokinetic cell product, even charged 40%-60% is still carrying huge energy.Present battery warehouse and means of transportation have the point image explosives magazine, in fact also have the battery warehouse of lithium ion battery factory and the aircraft of transportation lithium ion battery that accident on fire from explosion occurred, and have caused heavy losses.
The method that present lithium ion battery stores, charged 40%-60% stores, cell voltage is in its workbench stage, can store for a long time and can not become and put damage, but stock's lithium ion battery still has the fraction battery bigger than normal from power consumption, is not easy to identify by measuring voltage, be used as the qualified product shipment to the client, finally cause customer complaint.
There are the deficiency of two maximums in present storage and transportation technology: store or there is potential safety hazard in transportation; Be not easy to find and reject the battery that electric leakage is large.
In order to solve this two problems, we have carried out low electric state and have stored or transportation technology research.
Summary of the invention
Order of the present invention be avoid existing store or transportation technology in weak point, and provide a kind of store or transportation safely, a kind of lithium ion battery of being easy to find and reject the battery that electric leakage is large stores or the method for transportation.
Order of the present invention reaches by following measures, a kind of method that lithium ion battery stores or transports, before battery enters storage or transportation, by lithium ion battery is discharged and recharged, making its charging state is 1% ~ 15%, then battery is put into to temperature-20 ℃ to 40 ℃, the environment of relative humidity 1% ~ 99% and is stored or transportation.
Order of the present invention is realized by following steps:
(1) before battery enters storage or transportation, lithium ion battery is discharged to its state of charged 1% ~ 15% that makes, lithium iron phosphate/carbon series battery voltage n*2.7～3.25V after electric discharge, or the rear cobalt acid of electric discharge lithium/carbon series battery voltage n*3.4～3.75V; Or LiMn2O4/carbon series battery voltage n*3.4～3.75V after electric discharge; Or nickle cobalt lithium manganate/carbon series battery voltage n*3.4～3.75V after electric discharge; Or cobalt acid lithium-LiMn2O4-nickle cobalt lithium manganate arbitrary proportion mixing/carbon series battery voltage n*3.4～3.75V after electric discharge; N is the battery serial number.
(2) battery being put into to temperature-20 ℃ to 40 ℃, the environment of relative humidity 1% ~ 99% stores or transportation.
The objective of the invention is to realize by following steps:
(1) before battery enters storage or transportation, after being discharged, lithium ion battery charged again, make its state of charged 1% ~ 15%, lithium iron phosphate/carbon series battery voltage n*2.7～3.25V after charging, or cobalt acid lithium/carbon series battery voltage n*3.4～3.75V after charging; Or LiMn2O4/carbon series battery voltage n*3.4～3.75V after charging; Or nickle cobalt lithium manganate/carbon series battery voltage n*3.4～3.75V after charging; Or cobalt acid lithium-LiMn2O4-nickle cobalt lithium manganate arbitrary proportion mixing/carbon series battery voltage n*3.4～3.75V after charging; N is the battery serial number.
(2) battery being put into to temperature-20 ℃ to 40 ℃, the environment of relative humidity 1% ~ 99% stores or transportation.
The objective of the invention is to realize by following steps:
(1) before battery enters storage or transportation, lithium ion battery is charged, made its state of charged 1% ~ 15%, lithium iron phosphate/carbon series battery voltage n*2.7～3.25V after charging, or the rear cobalt acid of charging lithium/carbon series battery voltage n*3.4～3.75V; Or LiMn2O4/carbon series battery voltage n*3.4～3.75V after charging; Or nickle cobalt lithium manganate/carbon series battery voltage n*3.4～3.75V after charging; Or cobalt acid lithium-LiMn2O4-nickle cobalt lithium manganate arbitrary proportion mixing/carbon series battery voltage n*3.4～3.75V after charging; N is the battery serial number.
(2) battery being put into to temperature-20 ℃ to 40 ℃, the environment of relative humidity 1% ~ 99% stores or transportation.
Order of the present invention reaches by following measures, a kind of method that lithium ion battery stores or transports, before battery enters storage or transportation, by lithium ion battery is discharged and recharged, making its charging state is 5% ~ 10%, and the environment of then battery being put into to 0 ℃ to 35 ℃ of temperature, relative humidity 10% ~ 75% stores or transportation.
The objective of the invention is to realize by following steps:
(1) before battery enters storage or transportation, lithium ion battery is discharged to its state of charged 5% ~ 10% that makes, lithium iron phosphate/carbon series battery voltage n*3.15～3.20V after electric discharge, or the rear cobalt acid of electric discharge lithium/carbon series battery voltage n*3.6～3.7V; Or LiMn2O4/carbon series battery voltage n*3.6～3.7V after electric discharge; Or nickle cobalt lithium manganate/carbon series battery voltage n*3.6～3.7V after electric discharge; Or cobalt acid lithium-LiMn2O4-nickle cobalt lithium manganate arbitrary proportion mixing/carbon series battery voltage n*3.6～3.7V after electric discharge; N is the battery serial number.
(2) battery is put into to environment storage or the transportation of 0 ℃ to 35 ℃ of temperature, relative humidity 10% ~ 75%.
The objective of the invention is to realize by following steps:
(1) before battery enters storage or transportation, after being discharged, lithium ion battery charged again, make its state of charged 5% ~ 10%, lithium iron phosphate/carbon series battery voltage n*3.15～3.20V after charging, or cobalt acid lithium/carbon series battery voltage n*3.6～3.7V after charging; Or LiMn2O4/carbon series battery voltage n*3.6～3.7V after charging; Or nickle cobalt lithium manganate/carbon series battery voltage n*3.6～3.7V after charging; Or cobalt acid lithium-LiMn2O4-nickle cobalt lithium manganate arbitrary proportion mixing/carbon series battery voltage n*3.6～3.7V after charging; N is the battery serial number.
(2) battery is put into to environment storage or the transportation of 0 ℃ to 35 ℃ of temperature, relative humidity 10% ~ 75%.
The objective of the invention is to realize by following steps:
(1) before battery enters storage or transportation, lithium ion battery is charged, made its state of charged 5% ~ 10%, lithium iron phosphate/carbon series battery voltage n*3.15～3.20V after charging, or the rear cobalt acid of charging lithium/carbon series battery voltage n*3.6～3.7V; Or LiMn2O4/carbon series battery voltage n*3.6～3.7V after charging; Or nickle cobalt lithium manganate/carbon series battery voltage n*3.6～3.7V after charging; Or cobalt acid lithium-LiMn2O4-nickle cobalt lithium manganate arbitrary proportion mixing/carbon series battery voltage n*3.6～3.7V after charging; N is the battery serial number.
(2) battery is put into to environment storage or the transportation of 0 ℃ to 35 ℃ of temperature, relative humidity 10% ~ 75%.
Order of the present invention reaches by following measures, a kind of method that lithium ion battery stores or transports, before battery enters storage or transportation, by lithium ion battery is discharged and recharged, making its charging state is 1% ~ 5%, and the environment of then battery being put into to 0 ℃ to 35 ℃ of temperature, relative humidity 10% ~ 75% stores or transportation.
The objective of the invention is to realize by following steps:
(1) before battery enters storage or transportation, lithium ion battery is discharged to its state of charged 1% ~ 5% that makes, lithium iron phosphate/carbon series battery voltage n*2.7～3.15V after electric discharge, or the rear cobalt acid of electric discharge lithium/carbon series battery voltage n*3.4～3.6V; Or LiMn2O4/carbon series battery voltage n*3.4～3.6V after electric discharge; Or nickle cobalt lithium manganate/carbon series battery voltage n*3.4～3.6V after electric discharge; Or cobalt acid lithium-LiMn2O4-nickle cobalt lithium manganate arbitrary proportion mixing/carbon series battery voltage n*3.4～3.6V after electric discharge; N is the battery serial number.
(2) battery is put into to environment storage or the transportation of 0 ℃ to 35 ℃ of temperature, relative humidity 10% ~ 75%.
The objective of the invention is to realize by following steps:
(1) before battery enters storage or transportation, after being discharged, lithium ion battery charged again, make its state of charged 1% ~ 5%, lithium iron phosphate/carbon series battery voltage n*2.7～3.15V after charging, or cobalt acid lithium/carbon series battery voltage n*3.4～3.6V after charging; Or LiMn2O4/carbon series battery voltage n*3.4～3.6V after charging; Or nickle cobalt lithium manganate/carbon series battery voltage n*3.4～3.6V after charging; Or cobalt acid lithium-LiMn2O4-nickle cobalt lithium manganate arbitrary proportion mixing/carbon series battery voltage n*3.4～3.6V after charging; N is the battery serial number.
(2) battery is put into to environment storage or the transportation of 0 ℃ to 35 ℃ of temperature, relative humidity 10% ~ 75%.
The objective of the invention is to realize by following steps:
(1) before battery enters storage or transportation, lithium ion battery is charged, made its state of charged 1% ~ 5%, lithium iron phosphate/carbon series battery voltage n*2.7～3.15V after charging, or the rear cobalt acid of charging lithium/carbon series battery voltage n*3.4～3.6V; Or LiMn2O4/carbon series battery voltage n*3.4～3.6V after charging; Or nickle cobalt lithium manganate/carbon series battery voltage n*3.4～3.6V after charging; Or cobalt acid lithium-LiMn2O4-nickle cobalt lithium manganate arbitrary proportion mixing/carbon series battery voltage n*3.4～3.6V after charging; N is the battery serial number.
(2) battery is put into to environment storage or the transportation of 0 ℃ to 35 ℃ of temperature, relative humidity 10% ~ 75%.
Order of the present invention reaches by following measures, a kind of method that lithium ion battery stores or transports, before battery enters storage or transportation, by lithium ion battery is discharged and recharged, making its charging state is 10% ~ 15%, and the environment of then battery being put into to 0 ℃ to 35 ℃ of temperature, relative humidity 10% ~ 75% stores or transportation.
The objective of the invention is to realize by following steps:
(1) before battery enters storage or transportation, lithium ion battery is discharged to its state of charged 10% ~ 15% that makes, lithium iron phosphate/carbon series battery voltage n*3.20 ~ 3.25V after electric discharge, or the rear cobalt acid of electric discharge lithium/carbon series battery voltage n*3.70～3.75V; Or LiMn2O4/carbon series battery voltage n*3.70～3.75V after electric discharge; Or nickle cobalt lithium manganate/carbon series battery voltage n*3.70～3.75V after electric discharge; Or cobalt acid lithium-LiMn2O4-nickle cobalt lithium manganate arbitrary proportion mixing/carbon series battery voltage n*3.70～3.75V after electric discharge; N is the battery serial number.
(2) battery is put into to environment storage or the transportation of 0 ℃ to 35 ℃ of temperature, relative humidity 10% ~ 75%.
The objective of the invention is to realize by following steps:
(1) before battery enters storage or transportation, after being discharged, lithium ion battery charged again, make its state of charged 10% ~ 15%, lithium iron phosphate/carbon series battery voltage n*3.20～3.25V after charging, or cobalt acid lithium/carbon series battery voltage n*3.70～3.75V after charging; Or LiMn2O4/carbon series battery voltage n*3.70～3.75V after charging; Or nickle cobalt lithium manganate/carbon series battery voltage n*3.70～3.75V after charging; Or cobalt acid lithium-LiMn2O4-nickle cobalt lithium manganate arbitrary proportion mixing/carbon series battery voltage n*3.70～3.75V after charging; N is the battery serial number.
(2) battery is put into to environment storage or the transportation of 0 ℃ to 35 ℃ of temperature, relative humidity 10% ~ 75%.
The objective of the invention is to realize by following steps:
(1) before battery enters storage or transportation, lithium ion battery is charged, make its state of charged 10% ~ 15%, lithium iron phosphate/carbon series battery voltage n*3.20～3.25V after charging, or cobalt acid lithium/carbon series battery voltage n*3.70～3.75V after charging; Or LiMn2O4/carbon series battery voltage n*3.70～3.75V after charging; Or nickle cobalt lithium manganate/carbon series battery voltage n*3.70～3.75V after charging; Or cobalt acid lithium-LiMn2O4-nickle cobalt lithium manganate arbitrary proportion mixing/carbon series battery voltage n*3.70～3.75V after charging; N is the battery serial number.
(2) battery is put into to environment storage or the transportation of 0 ℃ to 35 ℃ of temperature, relative humidity 10% ~ 75%.
When charging state 100%, battery from power consumption, be relatively large, now the danger of battery is also maximum, and security incident easily occurs.Battery is not suitable for full charging state and stores or transport.Usually the consumable TV university that people say is little, is to shelve the percentage of 28 days loss of electricities after the battery full charging.
When charging state 40% ~ 60%, battery from power consumption relatively completely electricity be less, the danger of relatively low charging state battery is larger, battery is in the working voltage platform stage, consumable electricity not easy to identify battery bigger than normal in storage process.This is the way of most Battery Plants, because danger is larger, and consumable electricity not easy to identify battery bigger than normal, half electric state 40% ~ 60% stores or transportation is not best storage or transportation resources.
When low charging state 1% ~ 15%, battery is safer, battery from power consumption relatively completely electricity be smaller, its magnitude of voltage on discharge curve in the electric discharge end, the easy battery bigger than normal from power consumption by voltage identification.Battery Plant has before the assembled battery group first measures the internal resistance of battery core voltage to guarantee the custom of battery core quality, have before the battery shipment and first measure battery voltage internal resistance to guarantee the custom of battery quality, low electric state 1% ~ 15% stores the battery that more is conducive to reject low pressure, consumable TV university, guarantees product quality.It is best storage or transportation resources that low electric state 1% ~ 15% stores.
When charging state 0%; battery is safest; battery almost can consume without electricity; residual capacity in can only consuming cells, particularly, with the battery pack of baffle or power-supply management system, battery core can be from power consumption; baffle or power-supply management system have quiescent current; can make battery pack enter the state of putting, if the baffle that 0V can not fill or power-supply management system, battery pack there will be disabler.Battery is not suitable for zero charging state and stores or transportation.
For effect and the security performance of battery under low charging state of verifying that battery stores under low charging state, assessment is the extent of damage to low charging state battery from power consumption, we have done large sample, long-term follow research to the lithium iron phosphate dynamic battery of selecting qualified nominal 3.2V10Ah by technique, after being discharged, the sample battery is filled with 1%, 5%, 10%, 15%, 50% capacity, each 1000 batteries of each class, be placed on warehouse and shelve for a long time and reach 1 year; Measuring voltage again, find the battery qualified from consumption rate, and before storing, charging state is 1%, and voltage is 2.80 ~ 2.90V, and in warehouse storage, after 1 year, voltage is 2.50 ~ 2.60V, there is no the damage of putting, and charge/discharge capacity keeps initial 98% ~ 100%; The battery bigger than normal from consumption rate, before storing, charging state is 1%, and voltage is 2.82 ~ 2.87V, and in warehouse storage, after 1 year, voltage is 1.1 ~ 1.9V, and battery existed to be put, but still can discharge and recharge, and charge/discharge capacity keeps initial 93% ~ 97%.The qualified battery from consumption rate, take charging state as 1% storage 1 year, can not damage.
The various charging state 3.2V10Ah of table 1. lithium iron phosphate dynamic battery stores 1 year voltage and distributes
 |
1% | 5% | 10% | 15% | 50% |
| [1.0,2.0） | 2 | 0 | 0 | 0 | 0 |
| [2.0，2.1） | 1 | 1 | 0 | 0 | 0 |
| [2.1，2.2） | 0 | 1 | 0 | 0 | 0 |
| [2.2，2.3） | 2 | 0 | 0 | 0 | 0 |
| [2.3，2.4） | 2 | 1 | 1 | 1 | 0 |
| [2.4，2.5） | 11 | 2 | 1 | 0 | 0 |
| [2.5，2.6） | 972 | 1 | 0 | 1 | 0 |
| [2.6，2.7） | 10 | 3 | 1 | 1 | 0 |
| [2.7，2.8） | 0 | 8 | 2 | 2 | 0 |
| [2.8，2.9） | 0 | 975 | 1 | 1 | 0 |
| [2.9，3.0） | 0 | 8 | 5 | 2 | 1 |
| [3.0，3.1） | 0 | 0 | 985 | 6 | 1 |
| [3.1，3.2） | 0 | 0 | 4 | 984 | 4 |
| [3.2，3.3） | 0 | 0 | 0 | 2 | 994 |
| [3.3，3.4） | 0 | 0 | 0 | 0 | 0 |
As seen from Table 1, even qualified battery is still discrepantly from consumption rate, after long term storage, can break up out; Charging state is low, easily by the TV university of voltage identification consumable and from power consumption little battery; Charging state 50%, in the voltage platform stage, more difficult by the TV university of voltage identification consumable and from power consumption little battery.
More incident nail thorn, short circuit, extruding test when the 3.2V10Ah lithium iron phosphate dynamic battery of charging state 1%, 5%, 10%, 15%, 50% is done to storage, 10, various charging state samples, the results are shown in Table 2.
The various charging state 3.2V10Ah of table 2. lithium iron phosphate dynamic battery safety test result
| charging |
1% | 5% | 10% | 15% | 50% |
| the nail thorn | do not explode and not on firely do not smolder, 28 ~ 32 ℃ of maximum temperatures. | do not explode and not on firely do not smolder, 40 ~ 50 ℃ of maximum temperatures. | do not explode and not on firely do not smolder, 70 ~ 80 ℃ of maximum temperatures. | do not explode not on fire, slightly smolder, 91 ~ 109 ℃ of maximum temperatures. | do not explode not on fire, can smolder, 132 ~ 149 ℃ of maximum temperatures. |
| short circuit | do not explode and not on firely do not smolder, 30 ~ 36 ℃ of maximum temperatures. | do not explode and not on firely do not smolder, 45 ~ 55 ℃ of maximum temperatures. | do not explode and not on firely do not smolder, 72 ~ 85 ℃ of maximum temperatures. | do not explode not on fire, do not smolder, 88 ~ 102 ℃ of maximum temperatures. | do not explode not on fire, can smolder, 98 ~ 122 ℃ of maximum temperatures. |
| extruding | do not explode and not on firely do not smolder, 30 ~ 35 ℃ of maximum temperatures. | do not explode and not on firely do not smolder, 42 ~ 53 ℃ of maximum temperatures. | do not explode and not on firely do not smolder, 70 ~ 82 ℃ of maximum temperatures. | do not explode not on fire, slightly smolder, 92 ~ 108 ℃ of maximum temperatures. | do not explode not on fire, can smolder, 138 ~ 157 ℃ of maximum temperatures. |
Annotate: the maximum temperature that when maximum temperature is test, each battery sample middle part measures.
As seen from Table 2, when 1% ~ 15% low charging state stores, battery itself meets with various accidents, and the cell body temperature is no more than poly fusing point, can not cause the battery diaphragm fusing, can not cause chain reaction, safe; When 50% charging state stores, battery itself meets with various accidents, and the cell body temperature can surpass poly fusing point, can cause the battery diaphragm fusing, can cause chain reaction, causes whole warehouse battery on fire, and fail safe is low.
A kind of lithium ion battery of the present invention stores or the method advantage of transportation is: storage or transportation battery charge state are low, and storage or transportation potential safety hazard are little, safe; Under low charging state, be easy to find and reject the battery that electric leakage is large, improve the quality level of shipment battery; The battery core stored through too low charging state, before combo, select voltage with the battery core of shelves for combo, can control on the same group between battery core from power consumption difference, assemble out the battery pack that consistency is high, reliability is high.Quick during practical application, simple, easy to operate, there is good market application foreground.
The accompanying drawing explanation
Fig. 1 is that embodiment and Comparative Examples store the voltage distribution map after 28 days.
Embodiment
Below in conjunction with embodiment, the present invention will be further described.
Embodiment 1: our company produces 11585135Fe type flexible package ferric phosphate lithium ion battery, nominal voltage 3.2V, rated capacity 10Ah.According to the method for the invention, battery is proceeded as follows.
1) battery after forming and capacity dividing is discharged to 2.1V with 2A, electric discharge is voltage bounce to 2.8 ~ 2.9V later, and its charging state is about 1%;
2) battery is placed in to the warehouse storage of normal temperature (20 ~ 30 ℃) and common humidity range (RH50 ~ 80%) on above-mentioned electric discharge basis.
Embodiment 2: our company produces 11585135Fe type flexible package ferric phosphate lithium ion battery, nominal voltage 3.2V, rated capacity 10Ah.According to the method for the invention, battery is proceeded as follows.
1) the 2A constant-current constant-voltage charging is to 3.15V 0.5A cut-off again after the battery after forming and capacity dividing is discharged, and 3.13 ~ 3.14V is fallen back in charging voltage later, and its charging state is about 5%;
2) battery is placed in to the warehouse storage of normal temperature (20 ~ 30 ℃) and common humidity range (RH50 ~ 80%) on above-mentioned electric discharge basis.
Comparative Examples: our company produces 11585135Fe type flexible package ferric phosphate lithium ion battery, nominal voltage 3.2V, rated capacity 10Ah.Battery is proceeded as follows.
1) by the battery 2A constant-current constant-voltage charging after forming and capacity dividing to 3.6V 0.5A cut-off, then, with 2A electric discharge 2.5h, control its charging state and be about 50%;
2) battery is placed in to the warehouse storage of normal temperature (20 ~ 30 ℃) and common humidity range (RH50 ~ 80%) on above-mentioned electric discharge basis.
Checking:
Fail safe: above-mentioned three kinds of different storage method gained batteries are carried out respectively to safety test.
Test environment: 25 ℃;
Method of testing: the battery of directly getting warehouse storage is done nail thorn, short circuit and extruding test.Each tests 1, the results are shown in Table 3.
Several routine battery security test results of table 3.
| ? | |
embodiment 2 | comparative Examples |
| the nail thorn | do not explode and not on firely do not smolder, 28 ℃ of maximum temperatures. | do not explode and not on firely do not smolder, 40 ℃ of maximum temperatures. | do not explode not on fire, can smolder, 140 ℃ of maximum temperatures. |
| short circuit | do not explode and not on firely do not smolder, 30 ℃ of maximum temperatures. | do not explode and not on firely do not smolder, 45 ℃ of maximum temperatures. | do not explode not on fire, can smolder, 90 ℃ of maximum temperatures. |
| extruding | do not explode and not on firely do not smolder, 30 ℃ of maximum temperatures. | do not explode and not on firely do not smolder, 42 ℃ of maximum temperatures. | do not explode not on fire, can smolder, 145 ℃ of maximum temperatures. |
Above example clearly demonstrates, and according to the inventive method, lithium ion battery is controlled to low charging state in warehouse storage, and security performance is high, and various accidents are difficult to make more than battery is warmed up to burning-point; Half electric state storage safe is poor, is short-circuited may cause and smolder or on fire.
Voltage distributes: will above-mentioned three kinds of different storage methods storages after 28 days the gained battery respectively take out at random 1000 and carry out respectively voltage tester.
Test environment: 25 ℃;
Method of testing: the battery of directly getting warehouse storage, to 25 ℃ of constant temperature of test cabinet test voltage after 4 hours, is done the voltage distribution map.
Several routine cell voltage distribution figure are shown in Fig. 1.Always there are differences between battery, adopt low charging state to store, easily identify A-battery; Half electric state stores A-battery not easy to identify.
A kind of lithium ion battery of the present invention stores or the method main points of transportation are: before battery enters storage or transportation, lithium ion battery is not first through limitting discharging and recharging of number of times and order, controlling the lithium ion battery charging state by electric discharge or charging is 1% ~ 15%, battery is put into to warehouse and store or transport, improve the fail safe in battery storage or transportation.It is optional that the rear voltage of storage is selected, and can carry out voltage and select, and also can not carry out voltage and select.Just low electric state stores, and is conducive to the identification battery bigger than normal from power consumption, preferably carries out voltage and selects, and is beneficial to the assurance battery quality, avoid the battery bigger than normal from power consumption to flow into after operation or shipment, avoid the battery bigger than normal from power consumption to do again discharging and recharging and produce danger.Charging state is 1% ~ 15%, can select according to actual needs, and generally, battery core is selected low carrying capacity, such as 1% ~ 10%; The battery core capacity is large, selects low carrying capacity, such as 1% ~ 5%; The battery core capacity is little, selects more highly charged amount, such as 5% ~ 10%; Baffle or power-supply management system are arranged in battery pack, the meeting consumes power, battery pack is selected more highly charged amount, such as 10% ~ 15%.
As long as adopt marrow of the present invention, increase dispensable test or additional operations, all belong to the protection range of this patent.
Claims (10)
1. a lithium ion battery stores or the method for transportation, it is characterized in that: battery enter store or transportation before, by lithium ion battery is discharged and recharged, making its charging state is 1% ~ 15%, then battery is put into to environment stores or transportation.
2. the method that a kind of lithium ion battery according to claim 1 stores or transports is characterized in that: lithium iron phosphate/carbon series battery voltage n*2.7～3.25V after electric discharge, or the sour lithium of cobalt/carbon series battery voltage n*3.4～3.75V after electric discharge; Or LiMn2O4/carbon series battery voltage n*3.4～3.75V after electric discharge; Or nickle cobalt lithium manganate/carbon series battery voltage n*3.4～3.75V after electric discharge; Or cobalt acid lithium-LiMn2O4-nickle cobalt lithium manganate arbitrary proportion mixing/carbon series battery voltage n*3.4～3.75V after electric discharge; N is the battery serial number.
3. the method that a kind of lithium ion battery according to claim 1 stores or transports, it is characterized in that: after lithium ion battery is discharged, charged again, lithium iron phosphate/carbon series battery voltage n*2.7～3.25V after charging, or cobalt acid lithium/carbon series battery voltage n*3.4～3.75V after charging; Or LiMn2O4/carbon series battery voltage n*3.4～3.75V after charging; Or nickle cobalt lithium manganate/carbon series battery voltage n*3.4～3.75V after charging; Or cobalt acid lithium-LiMn2O4-nickle cobalt lithium manganate arbitrary proportion mixing/carbon series battery voltage n*3.4～3.75V after charging; N is the battery serial number.
4. the method that a kind of lithium ion battery according to claim 1 stores or transports, it is characterized in that: lithium ion battery is charged, lithium iron phosphate/carbon series battery voltage n*2.7～3.25V after charging, or cobalt acid lithium/carbon series battery voltage n*3.4～3.75V after charging; Or LiMn2O4/carbon series battery voltage n*3.4～3.75V after charging; Or nickle cobalt lithium manganate/carbon series battery voltage n*3.4～3.75V after charging; Or cobalt acid lithium-LiMn2O4-nickle cobalt lithium manganate arbitrary proportion mixing/carbon series battery voltage n*3.4～3.75V after charging; N is the battery serial number.
5. a kind of lithium ion battery according to claim 1 stores or the method for transportation, it is characterized in that: battery is put into to temperature-20 ℃ to 40 ℃, the environment of relative humidity 1% ~ 99% and store or transportation.
6. a lithium ion battery stores or the method for transportation, it is characterized in that: before battery enters storage or transportation, by lithium ion battery is discharged and recharged, making its charging state is 5% ~ 10%, and the environment of then battery being put into to 0 ℃ to 35 ℃ of temperature, relative humidity 10% ~ 75% stores or transportation.
7. the method that a kind of lithium ion battery according to claim 6 stores or transports, it is characterized in that: by the lithium-ion electric tank discharge, lithium iron phosphate/carbon series battery voltage n*3.15～3.20V after electric discharge, or cobalt acid lithium/carbon series battery voltage n*3.6～3.7V after electric discharge; Or LiMn2O4/carbon series battery voltage n*3.6～3.7V after electric discharge; Or nickle cobalt lithium manganate/carbon series battery voltage n*3.6～3.7V after electric discharge; Or cobalt acid lithium-LiMn2O4-nickle cobalt lithium manganate arbitrary proportion mixing/carbon series battery voltage n*3.6～3.7V after electric discharge; N is the battery serial number.
8. the method that a kind of lithium ion battery according to claim 6 stores or transports, it is characterized in that: after lithium ion battery is discharged, charged again, lithium iron phosphate/carbon series battery voltage n*3.15～3.20V after charging, or cobalt acid lithium/carbon series battery voltage n*3.6～3.7V after charging; Or LiMn2O4/carbon series battery voltage n*3.6～3.7V after charging; Or nickle cobalt lithium manganate/carbon series battery voltage n*3.6～3.7V after charging; Or cobalt acid lithium-LiMn2O4-nickle cobalt lithium manganate arbitrary proportion mixing/carbon series battery voltage n*3.6～3.7V after charging; N is the battery serial number.
9. a lithium ion battery stores or the method for transportation, before battery enters storage or transportation, by lithium ion battery is discharged and recharged, making its charging state is 1% ~ 5%, and the environment of then battery being put into to 0 ℃ to 35 ℃ of temperature, relative humidity 10% ~ 75% stores or transportation.
10. the method that a kind of lithium ion battery according to claim 9 stores or transports is characterized in that: lithium iron phosphate/carbon series battery voltage n*2.70～3.15V, or cobalt acid lithium/carbon series battery voltage n*3.4～3.6V; Or LiMn2O4/carbon series battery voltage n*3.4～3.6V; Or nickle cobalt lithium manganate/carbon series battery voltage n*3.4～3.6V; Or cobalt acid lithium-LiMn2O4-nickle cobalt lithium manganate arbitrary proportion mixing/carbon series battery voltage n*3.4～3.6V; N is the battery serial number.
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| CN106371023A (en) * | 2016-08-16 | 2017-02-01 | 林飞 | Safe storing apparatus for lithium battery and the storing method |
| CN106374151A (en) * | 2016-09-30 | 2017-02-01 | 上海空间电源研究所 | Adjusting device and adjusting method for charged states of space lithium-ion batteries |
| CN108711909A (en) * | 2018-06-13 | 2018-10-26 | 广东小天才科技有限公司 | Lithium battery charging method and device for electronic equipment, electronic equipment and storage medium |
| CN112421031A (en) * | 2020-11-24 | 2021-02-26 | 宁德新能源科技有限公司 | Electrochemical device and electronic device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106371023A (en) * | 2016-08-16 | 2017-02-01 | 林飞 | Safe storing apparatus for lithium battery and the storing method |
| CN106371023B (en) * | 2016-08-16 | 2019-09-24 | 安徽川马新能源科技有限公司 | Lithium battery secure store and storage method |
| CN106374151A (en) * | 2016-09-30 | 2017-02-01 | 上海空间电源研究所 | Adjusting device and adjusting method for charged states of space lithium-ion batteries |
| CN108711909A (en) * | 2018-06-13 | 2018-10-26 | 广东小天才科技有限公司 | Lithium battery charging method and device for electronic equipment, electronic equipment and storage medium |
| CN112421031A (en) * | 2020-11-24 | 2021-02-26 | 宁德新能源科技有限公司 | Electrochemical device and electronic device |
| CN112421031B (en) * | 2020-11-24 | 2022-04-05 | 宁德新能源科技有限公司 | Electrochemical device and electronic device |
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Application publication date: 20131218 |