CN107861067A - The reversible loss quantitative detecting method of lithium battery - Google Patents
The reversible loss quantitative detecting method of lithium battery Download PDFInfo
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- CN107861067A CN107861067A CN201710966854.9A CN201710966854A CN107861067A CN 107861067 A CN107861067 A CN 107861067A CN 201710966854 A CN201710966854 A CN 201710966854A CN 107861067 A CN107861067 A CN 107861067A
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- voltage
- lithium battery
- lithium
- detecting method
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/392—Determining battery ageing or deterioration, e.g. state of health
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Abstract
The invention discloses a kind of reversible loss quantitative detecting method of lithium battery, including：A, the time S1 and lithium content initial content P for discharging into voltage V2 when lithium battery uses first from voltage V1 are obtained in temperature T environment, wherein, V2 is less than V1；The time S2 that lithium battery discharges into voltage V2 from voltage V1 is obtained when B, examining and determine equally in temperature T environment；C, according to time S1, time S2, lithium content initial content P computed losses.This programme calculates the loss of battery according to the time that voltage V2 is discharged into from voltage V1 and lithium content initial content P, and method is simple, easy to operation, and does not interfere with secondary use.
Description
Technical field
The present invention relates to battery detecting technical field, and in particular to a kind of reversible loss quantitative detecting method of lithium battery.
Background technology
Lithium ion battery be it is a kind of by lithium metal or lithium alloy be negative material, the battery using non-aqueous electrolytic solution.
Due to its energy density is high, specific power is big, have extended cycle life the advantages that, be widely used to the production of the electronics such as mobile phone, flat board at present
On product.
Although lithium ion battery has many protrusions a little, the capacity of battery and energy damage during recycling
Mistake is inevitable.In order to measure the reversible loss of lithium ion battery, the patent of Application No. 201410564161.3 is " a kind of
The quantitative detecting method of the reversible loss of lithium ion battery " provides a kind of detection method.This method is to being lost what is be measured
During, it is necessary to disassemble battery, and the lithium of extract solution dissolution negative pole.Using this kind of method, especially for mobile phone, flat-type
User's battery, its is cumbersome, and reuses that there is also problem.
The content of the invention
In order to solve the above-mentioned technical problem the present invention provides a kind of lithium battery reversible loss quantitative detecting method.
The present invention is achieved through the following technical solutions：
The reversible loss quantitative detecting method of lithium battery, including：
A, the time S1 and lithium for discharging into voltage V2 when lithium battery uses first from voltage V1 are obtained in temperature T environment
Content initial content P, wherein, V2 is less than V1；
The time S2 that lithium battery discharges into voltage V2 from voltage V1 is obtained when B, examining and determine equally in temperature T environment；
C, according to time S1, time S2, lithium content initial content P computed losses.
This programme calculates the loss of battery according to the time that voltage V2 is discharged into from voltage V1 and lithium content initial content P,
Method is simple, easy to operation, and does not interfere with secondary use.
Preferably, the pressure value difference between the voltage V1 and voltage V2 is 0.1V to 0.5V, and voltage V1 is more than etc.
In the 80% of rated voltage.
Further as such scheme, the pressure value difference between the voltage V1 and voltage V2 is 0.3V, and voltage V1 is
The 95% of rated voltage.
Preferably, from voltage V1 discharge into voltage V2 when, with 0.01 to 0.05C multiplying powers electric current carry out constant-current discharge.
It is further as such scheme, when discharging into voltage V2 from voltage V1, constant current is carried out with 0.01 5C multiplying powers electric current
Electric discharge.
Preferably, the specific method of computed losses is in step C：P*(S2/S1).
The present invention compared with prior art, has the following advantages and advantages：
1st, the present invention calculates the damage of battery according to time and lithium content initial content P that voltage V2 is discharged into from voltage V1
Consumption, method is simple, easy to operation, and does not interfere with secondary use.
Embodiment
For the object, technical solutions and advantages of the present invention are more clearly understood, with reference to embodiment, the present invention is made
Further to describe in detail, exemplary embodiment of the invention and its explanation are only used for explaining the present invention, are not intended as to this
The restriction of invention.
Embodiment 1
The reversible loss quantitative detecting method of lithium battery, including：
A, the time S1 and lithium for discharging into voltage V2 when lithium battery uses first from voltage V1 are obtained in temperature T environment
Content initial content P, wherein, V2 is less than V1；
The time S2 that lithium battery discharges into voltage V2 from voltage V1 is obtained when B, examining and determine equally in temperature T environment；
C, according to time S1, time S2, lithium content initial content P computed losses.
The loss of battery, method letter are calculated according to the time that voltage V2 is discharged into from voltage V1 and lithium content initial content P
It is single, it is easy to operation, and do not interfere with secondary use.Whole process need not disassemble battery, use easy to spread.
Embodiment 2
The present embodiment acts on optimization on the basis of above-described embodiment, i.e., the pressure value difference between described voltage V1 and voltage V2
For 0.1V to 0.5V, and voltage V1 more than or equal to the 80% of rated voltage.Voltage V1 is arranged in the section, its voltage V1 with
Rate of change is shallower between voltage V2, is advantageous to improve accuracy rate.
Laboratory data shows, the pressure value difference between voltage V1 and voltage V2 is arranged into 0.3V, and voltage V1 is specified
Voltage 95% when its accuracy rate highest.
Embodiment 3
The present embodiment acts on optimization on the basis of above-described embodiment, i.e., when discharging into voltage V2 from voltage V1, with 0.01
Constant-current discharge is carried out to 0.05C multiplying powers electric current.
Laboratory data shows, when discharging into voltage V2 from voltage V1, when carrying out constant-current discharge with 0.01 5C multiplying powers electric current
Its accuracy rate highest.
Embodiment 4
The present embodiment acts on refinement on the basis of above-described embodiment, i.e. the specific method of computed losses is in step C：P*
(S2/S1)。
Above-described embodiment, the purpose of the present invention, technical scheme and beneficial effect are carried out further
Describe in detail, should be understood that the embodiment that the foregoing is only the present invention, be not intended to limit the present invention
Protection domain, within the spirit and principles of the invention, any modification, equivalent substitution and improvements done etc., all should include
Within protection scope of the present invention.
Claims (6)
1. the reversible loss quantitative detecting method of lithium battery, it is characterised in that including：
A, the time S1 and lithium content for discharging into voltage V2 when lithium battery uses first from voltage V1 are obtained in temperature T environment
Initial content P, wherein, V2 is less than V1；
The time S2 that lithium battery discharges into voltage V2 from voltage V1 is obtained when B, examining and determine equally in temperature T environment；
C, according to time S1, time S2, lithium content initial content P computed losses.
2. the reversible loss quantitative detecting method of lithium battery according to claim 1, it is characterised in that the voltage V1 and electricity
Pressure value difference between pressure V2 is 0.1V to 0.5V, and voltage V1 more than or equal to the 80% of rated voltage.
3. the reversible loss quantitative detecting method of lithium battery according to claim 2, it is characterised in that the voltage V1 and electricity
Pressure value difference between pressure V2 is 0.3V, and voltage V1 is the 95% of rated voltage.
4. the reversible loss quantitative detecting method of lithium battery according to claim 1, it is characterised in that discharged into from voltage V1
During voltage V2, constant-current discharge is carried out with 0.01 to 0.05C multiplying powers electric current.
5. the reversible loss quantitative detecting method of lithium battery according to claim 4, it is characterised in that discharged into from voltage V1
During voltage V2, constant-current discharge is carried out with 0.01 5C multiplying powers electric current.
6. the reversible loss quantitative detecting method of lithium battery according to claim 1, it is characterised in that damage is calculated in step C
The specific method of consumption is：P*(S2/S1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710966854.9A CN107861067A (en) | 2017-10-17 | 2017-10-17 | The reversible loss quantitative detecting method of lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710966854.9A CN107861067A (en) | 2017-10-17 | 2017-10-17 | The reversible loss quantitative detecting method of lithium battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107861067A true CN107861067A (en) | 2018-03-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710966854.9A Withdrawn CN107861067A (en) | 2017-10-17 | 2017-10-17 | The reversible loss quantitative detecting method of lithium battery |
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| CN (1) | CN107861067A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114184969B (en) * | 2021-12-08 | 2023-11-28 | 蜂巢能源科技(无锡)有限公司 | Method and device for testing reversible self-discharge capacity loss of battery cell |
-
2017
- 2017-10-17 CN CN201710966854.9A patent/CN107861067A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114184969B (en) * | 2021-12-08 | 2023-11-28 | 蜂巢能源科技(无锡)有限公司 | Method and device for testing reversible self-discharge capacity loss of battery cell |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180330 |
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| WW01 | Invention patent application withdrawn after publication |