CN105628685A - Method for measuring electrolyte distribution in lithium ion battery core - Google Patents
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Abstract
The invention relates to the technical field of lithium ion batteries, in particular to a method for measuring the distribution of electrolyte in a lithium ion battery core, which comprises the following steps: and (2) filling electrolyte containing a tracer element into the lithium ion battery to be tested, determining the content of the tracer element in the part to be tested of the lithium ion battery core by adopting an ion tracer method, calculating the actual distribution quantity of the electrolyte in each area of the part to be tested, and obtaining the distribution difference value of the electrolyte by calculating the difference between the actual distribution quantity of the electrolyte and the theoretical absorption quantity of the electrolyte. The method is simple and easy to implement, can trace and characterize the distribution quantity of the electrolyte on the positive and negative electrode diaphragms and the electronic insulating films of the battery, not only can predict the perfusion quantity of the electrolyte of the batteries with different sizes or different materials, but also can ensure the sufficient electrolyte perfusion in the battery, and can trace the distribution of the absorption of the electrolyte of each part on the positive and negative electrode diaphragms in the battery.
Description
Technical field
The present invention relates to technical field of lithium ion, the measuring method of electrolytic solution distribution in especially a kind of core of lithium ion cell.
Background technology
Since lithium ion battery commercialization, owing to it has the advantages such as high-energy-density, high-voltage, low self-discharge rate and weight are light, it is widely applied in electronic product field. in recent years, for meeting electromobile and energy storage demand, monomer lithium ion battery improves constantly capacity and volume, so that in battery electrolyte filling amount from before several grams or tens grams bring up to a few hectogram level, due to the laying method of battery core in battery case, electric core winding method, the elasticity of width and winding, all multifactor impacts such as battery manufacturing procedure, so many electrolytic solution in battery and non-uniform Distribution, some local Electolyte-absorptive of pole piece is more, some local absorption is less, thus cause pole piece each several part in battery to show inconsistent electrical property. even can cause battery analysis lithium when the electrolytic solution in some place of pole piece seriously lacks, seriously affect security and the work-ing life of battery. therefore, it is necessary to find a kind of method the distribution of electrolytic solution in core of lithium ion cell to be followed the tracks of, the place that Electolyte-absorptive on pole piece in battery is less is carried out prediction as early as possible.
For the defect existed in prior art, special proposition the present invention.
Summary of the invention
The goal of the invention of the present invention is to propose the measuring method of electrolytic solution distribution in a kind of core of lithium ion cell.
In order to complete the goal of the invention of the present invention, the technical scheme of employing is:
The present invention relates to the measuring method of electrolytic solution distribution in a kind of core of lithium ion cell, it is specially: by the electrolyte filling containing tracer element in lithium ion battery to be measured, adopt ionic trace method to measure the content of tracer element in core of lithium ion cell detected part, calculate the electrolytic solution distribution of core of lithium ion cell detected part.
Preferably, the detected part of core of lithium ion cell is anode pole piece, cathode pole piece or electronic isolation film.
Preferably, tracer element is selected from the element being dissolved in electrolytic solution and accurately detected by Element detection equipment, and the element contained in preferred electrolytic solution, described tracer element is elemental lithium or ferro element more preferably.
Preferably, after the electrolyte filling containing tracer element is in lithium ion battery to be measured, battery is fabricated into be charged before; Before the assay, disassemble lithium ion battery, get the detected part of core of lithium ion cell.
Preferably, when measuring, position to be detected is equally divided into n region, n be greater than 1 integer, ionic trace method is adopted to measure the content of the tracer element in each region in detected part in described core of lithium ion cell, calculating electrolytic solution absorbed dose and the electrolytic solution actual distribution amount in each region of detected part, electrolytic solution distribution difference obtains by calculating the difference of electrolytic solution actual distribution amount and the theoretical absorbed dose of electrolytic solution.
Preferably,
The calculation formula of electrolytic solution absorbed dose is: m=M �� C1/C2;
The calculation formula of electrolytic solution actual distribution amount is: F=m/S;
Wherein: m is electrolytic solution absorbed dose, the weight in each region of detected part is M, C1For the content measuring value of detected part each region tracer element, C2For the concentration of tracer element in electrolytic solution, the area in each region of detected part is S;
The theoretical absorbed dose of described electrolytic solution is the electrolyte content after the hole of detected part is filled by electrolytic solution completely.
Wherein, the unit of area is cm2, the unit of weight is mg.
Preferably, the equipment adopting ionic trace method to measure tracer element content is selected from inductively coupled plasma atomic emission spectrometer.
Preferably, the shell of core of lithium ion cell is selected from metal or non-metal case, it is preferable that box hat or aluminium shell.
Preferably, the anode pole piece of battery and cathode pole piece are selected from the embedding de-active material with lithium ion, independently be preferably LiFePO4��LiNiO2��LiCoO2��LiMnO2��LiMn2O4��LiNiaCobMncO2��LiNidCoeAlfO2��Li4Ti5O12, graphite, soft carbon, at least one in hard carbon or alloy; Wherein, a+b+c=1, d+e+f=1; Electronic isolation film is selected from diversion and the sub diaphragm that do not conduct electricity, at least one that the material of electronic isolation film is selected from PE, PP, PET or its derivative.
Preferably, containing the electrolytic solution of tracer element contains at least one in cyclic carbonate, linear carbonate; Containing lithium salt in electrolytic solution, lithium salt is selected from lithium hexafluoro phosphate (LiPF6), six fluorine close arsenic (V) acid lithium (LiAsF6), LiBF4 (LiBF4), di-oxalate lithium borate (LiBOB), oxalic acid boron difluoride acid lithium (LiBC2O4F2) at least one; The concentration of lithium salt is 0.6M��2M.
The useful effect of the present invention is:
The present invention finds a kind of simple method, it is possible to follow the tracks of the distribution amount situation symbolizing electrolytic solution on battery plus-negative plate diaphragm and electronic isolation film. One aspect of the present invention can predict the groundwater increment of the electrolytic solution of the battery of different size or differing materials, can ensure the electrolyte content that in battery, perfusion is economic, enough. On the other hand, it is possible to use the distribution of the absorption of the electrolyte content of each several part on positive/negative plate in battery is followed the tracks of by the method for the present invention, to prediction battery performance as battery disassemble after analysis lithium situation have directive significance.
Accompanying drawing explanation
Fig. 1 is the embodiment of the present invention 1 cathode pole piece sampling tracing area;
Fig. 2 is that the embodiment of the present invention 1 adopts ICP to test the content in negative pole each region tracer element (elemental lithium);
Fig. 3 is that the embodiment of the present invention 1 calculates electrolytic solution absorbed dose according to each region tracer element content;
Fig. 4 is the embodiment of the present invention 2 cathode pole piece sampling tracing area.
Below in conjunction with the drawings and specific embodiments, the ionic trace method of electrolytic solution distribution in mensuration core of lithium ion cell provided by the invention is described in detail, the present invention is not constituted any limitation.
Embodiment
A measuring method for electrolytic solution distribution in core of lithium ion cell, specifically comprises the following steps:
1. prepare the electrolytic solution containing tracer element: in the electrolytic solution needing perfusion, add the tracer element that quantitatively can dissolve; Tracer element can be the element adding electrolytic solution in addition can also be the element that electrolytic solution self has, as long as caning be uniformly dispersed in electrolytic solution and being gone out by Element detection equipment detection by quantitative; Preferred lithium element or ferro element;
2. fluid injection: perfusion is containing the electrolytic solution of tracer element in the battery needing to follow the tracks of electrolytic solution distribution, according to normal battery manufacturing procedure battery is fabricated into be charged before; Battery can be box hat, aluminium shell or other metal or non-metal case with certain physical strength;
3. sample: disassemble battery, get the sample of anode pole piece, cathode pole piece or electronic isolation film;
4. test: by the content of each region samples tracer element of Element detection equipment quantitatively characterizing, calculate the electrolytic solution absorbed dose of each region samples according to tracer element densitometer in the electrolytic solution;
Detection by quantitative element equipment can be inductively coupled plasma atomic emission spectrometer (ICP) or ion chromatograph (IC) or other can accurately detection by quantitative to the equipment of tracer element.
The selection of tracer element in the present invention, as long as caning be uniformly dispersed in electrolytic solution and being gone out by Element detection equipment detection by quantitative; And maximum adding quantity can not exceed electrolytic solution to the complete meltage of tracer element. Metallic element and non-metallic element can detect as tracer element; The example specifically can enumerated is elemental lithium, ferro element, cobalt element, manganese element, titanium elements, nickel element, elemental lithium, fluorine element, phosphoric, aluminium element etc., and preferred lithium element, phosphoric, ferro element. The reason of preferred lithium element, phosphoric, ferro element is: material is easy to get, conveniently dissolves in the electrolytic solution of electrolytic solution preparation containing this spike ion.
Preferably, position to be detected is equally divided into n region, n be greater than 1 integer; Can laterally be equally divided into n band, or longitudinal direction is divided into n band, or transverse direction, longitudinal direction are all divided equally, and are formed as n2Individual boxed area; Ionic trace method is adopted to measure the content of the tracer element in each region in detected part in described core of lithium ion cell, calculating electrolytic solution absorbed dose and the electrolytic solution actual distribution amount in each region of detected part, electrolytic solution distribution difference obtains by calculating the difference of electrolytic solution actual distribution amount and the theoretical absorbed dose of electrolytic solution.
The calculation formula of electrolytic solution absorbed dose is: m=M �� C1/C2;
The calculation formula of electrolytic solution actual distribution amount is: F=m/S;
Wherein: m is electrolytic solution absorbed dose, the weight in each region of detected part is M, C1For the content measuring value of detected part each region tracer element, C2For the concentration of tracer element in electrolytic solution, the area in each region of detected part is S;
The theoretical absorbed dose of electrolytic solution is the electrolyte content after the hole of detected part is filled by electrolytic solution completely.
Concrete method of calculation are: the porosity P% being recorded cathode pole piece by porosity testing tool, the volume V of negative pole each several part pole piece is by long L, wide W, and thick H calculates V=L �� W �� H, the density checking in electrolytic solution is D, then the theoretical absorbed dose=V �� P% �� D/S of negative pole each several part pole piece.
Wherein, the unit of length is cm, and the unit of area is cm2, the unit of volume is cm3, the unit of weight is mg, and the unit of density is mg/cm3��
In the present invention, the anode pole piece of battery and cathode pole piece are selected from the embedding de-active material with lithium ion, the active material of anode pole piece and cathode pole piece independently be selected from LiFePO4��LiNiO2��LiCoO2��LiMnO2��LiMn2O4��LiNiaCobMncO2��LiNidCoeAlfO2��Li4Ti5O12, graphite, soft carbon, at least one in hard carbon or alloy; Wherein, a+b+c=1, d+e+f=1;
Electronic isolation film is selected from diversion and the sub diaphragm that do not conduct electricity, at least one that the material of electronic isolation film is selected from PE, PP, PET or its derivative.
Containing the electrolytic solution of tracer element contains at least one in cyclic carbonate, linear carbonate;
Containing lithium salt in electrolytic solution, lithium salt is selected from LiPF6��LiAsF6��LiBF4��LiBOB��LiBC2O4F2In at least one; The concentration of lithium salt is 0.6M��2M.
The mensuration of electrolytic solution distribution on cathode pole piece in embodiment 1 core of lithium ion cell
1, prepare two groups of (experimental group and control group) models be V0D5N0 do not note electrolyte battery (long for 220mm, wide be 135mm, and thick be 29mm, box hat), the polyethylene film that wherein electronic isolation film use surface ceramic processes; Anode pole piece active material is LiFePO4; The active material of cathode pole piece is graphite; Electrolyte prescription containing tracer element is linear carbonate, and wherein lithium salt is 1MLiPF6��
2, injecting containing 1mol/L phosphofluoric acid lithium salt electrolyte 300g by normal battery manufacturing procedure, tracer element is the elemental lithium in lithium hexafluoro phosphate salt. Wherein experimental group according to normal battery manufacturing procedure battery is fabricated into be charged before, control group then directly carries out charging to full state.
3, sample: disassemble battery, get cathode pole piece sample.
4, delimit cathode pole piece resample area: as shown in Figure 1, by cathode pole piece 10 ' respectively by region shown in dotted line under be divided into 101 ', 102 ', 103 ', 104 ', 105 '. Get this five part each 1g of pole piece material respectively, it may also be useful to inductively coupled plasma atomic emission spectrometer (ICP) tests elemental lithium content C in each several part pole piece material1, to the mapping of each several part elemental lithium content, as shown in Figure 2.
Adopt ionic trace method to measure the content of the tracer element in each region in detected part in described core of lithium ion cell, calculate electrolytic solution absorbed dose (m) and electrolytic solution actual distribution amount (F) in each region of detected part;
Electrolytic solution absorbed dose: m=M �� C1/C2;
Electrolytic solution actual distribution amount: F=m/S;
Wherein: m is electrolytic solution absorbed dose, the weight in each region of detected part is M, C1For the content measuring value of detected part each region tracer element, C2For the concentration of tracer element in electrolytic solution, the area in each region of detected part is S;
Electrolytic solution distribution difference obtains by calculating the difference of electrolytic solution actual distribution amount and the theoretical absorbed dose of electrolytic solution.
The theoretical absorbed dose of electrolytic solution is the electrolyte content after the hole of detected part is filled by electrolytic solution completely. By as above formulae discovery, cathode pole piece being gone out electrolytic solution content that each several part absorbs and maps, theoretical absorbed dose calculates after being filled by electrolytic solution completely according to the porosity of cathode pole piece. Concrete method of calculation are: the porosity P% being recorded cathode pole piece by porosity testing tool, the volume V of negative pole each several part pole piece is by long L, wide W, and thick H calculates V=L �� W �� H, the density checking in electrolytic solution is D, then the theoretical absorbed dose=V �� P% �� D/S of negative pole each several part pole piece.
In above-mentioned calculation formula, the unit of length is cm, and the unit of area is cm2, the unit of volume is cm3, the unit of weight is mg, and the unit of density is mg/cm3��
As shown in Figure 3, wherein the electrolytic solution actual distribution amount in 103 ' region is significantly less than pole piece to the theoretical absorbed dose of electrolytic solution.
The cathode membrane that control group is disassembled out observes 103rd ' district significantly analysis lithium phenomenon, and the region (101 ', 105 ') of other electrolytic solution abundance is without analysis lithium phenomenon.
Conclusion: only need the electrolyte content by 103 ' region to improve for solving analysis lithium phenomenon, when improving the groundwater increment of battery electrolyte or optimize operation, only need to use the distribution of electrolytic solution on this method monitoring pole piece whether higher than theoretical absorbed dose, and without the need to whole for battery operation has been carried out and go to disassemble battery observation cathode pole piece after carrying out necessarily circulation.
The mensuration of electrolytic solution distribution on cathode pole piece in embodiment 2 core of lithium ion cell
1, prepare two groups of (experimental group and control group) models be V0D5N0 do not note electrolyte battery (long for 220mm, wide be 135mm, and thick be 29mm, aluminium shell), the polyethylene film that wherein electronic isolation film use surface ceramic processes; Anode pole piece active material is LiFePO4; The active material of cathode pole piece is hard carbon; Electrolyte prescription containing tracer element is linear carbonate, and wherein lithium salt is 1MLiPF6��
2, injecting containing 1mol/L phosphofluoric acid lithium salt electrolyte 300g by normal battery manufacturing procedure, tracer element is ferro element. Wherein experimental group according to normal battery manufacturing procedure battery is fabricated into be charged before, control group then directly carries out charging to full state.
3, sample: disassemble battery, get cathode pole piece sample.
4, delimit cathode pole piece resample area: as shown in Figure 4, by cathode pole piece transverse direction, longitudinally all divide equally, be formed as 52Individual boxed area 211 ', 212 ', 213 ', 214 ', 215 '; 221 ', 222 ', 223 ', 224 ', 225 '; 231 ', 232 ', 233 ', 234 ', 235 '; 241 ', 242 ', 243 ', 244 ', 245 '; 251 ', 252 ', 253 ', 254 ', 255 '. Get this 25 part each 1g of pole piece material respectively, it may also be useful to inductively coupled plasma atomic emission spectrometer (ICP) tests iron content C in each several part pole piece material1��
If the iron content that cathode pole piece each several part tests out is C1, the weight of cathode pole piece each several part is M, and the area of cathode pole piece each several part is S, and in electrolytic solution, the concentration of ferro element is C2, then electrolytic solution absorbed dose (m) of cathode pole piece each several part and the available following formulae discovery of electrolytic solution actual distribution amount (F):
M=M �� C1/C2;
F=m/S;
Electrolytic solution distribution difference obtains by calculating the difference of the theoretical absorbed dose of electrolytic solution actual distribution amount and electrolytic solution, and electrolytic solution theory absorbed dose is the electrolyte content after the hole of detected part is filled by electrolytic solution completely.
In above-mentioned calculation formula, the unit of length is cm, and the unit of area is cm2, the unit of volume is cm3, the unit of weight is mg, and the unit of density is mg/cm3��
By as above formulae discovery, cathode pole piece is gone out each several part electrolytic solution actual distribution amount, and theoretical absorbed dose calculates with embodiment 1.
Calculation result is as shown in table 1:
Table 1:
The cathode membrane that control group is disassembled out observes 231 ', 232 ', 233 ', 234 ', 235 ' district significantly analysis lithium phenomenon, and the region of other electrolytic solution abundance is without analysis lithium phenomenon.
Conclusion: only need the electrolyte content by 231 ', 232 ', 233 ', 234 ', 235 ' region to improve for solving analysis lithium phenomenon, when improving the groundwater increment of battery electrolyte or optimize operation, only need to use the distribution of electrolytic solution on this method monitoring pole piece whether higher than theoretical absorbed dose, and without the need to whole for battery operation has been carried out and go to disassemble battery observation cathode pole piece after carrying out necessarily circulation.
It should be noted that, according to the above description the announcement of book and elaboration, above-mentioned enforcement mode can also be changed and revise by those skilled in the art in the invention. Therefore, it is intended that the invention not be limited to embodiment disclosed and described above, some equivalent modifications and change to the present invention also should in the protection domains of the claim of the present invention. In addition, although employing some specific terms in this specification sheets, but these terms are just for convenience of description, and the present invention does not form any restriction.
Claims (10)
1. the measuring method of electrolytic solution distribution in a core of lithium ion cell, it is characterized in that, by the electrolyte filling containing tracer element in lithium ion battery to be measured, adopt ionic trace method to measure the content of tracer element in described core of lithium ion cell detected part, calculate the electrolytic solution distribution of described core of lithium ion cell detected part.
2. measuring method according to claim 1, it is characterised in that, the detected part of described core of lithium ion cell is anode pole piece, cathode pole piece or electronic isolation film.
3. measuring method according to claim 1, it is characterised in that, described tracer element is selected from the element being dissolved in electrolytic solution and accurately detected by Element detection equipment, and the element contained in preferred electrolytic solution, it is more preferable to elemental lithium or ferro element.
4. measuring method according to claim 1, it is characterised in that, after the electrolyte filling containing tracer element is in lithium ion battery to be measured, battery is fabricated into be charged before; Before the assay, disassemble lithium ion battery, get the detected part of core of lithium ion cell.
5. measuring method according to claim 1, it is characterized in that, when measuring, position to be detected is equally divided into n region, n be greater than 1 integer, adopting ionic trace method to measure the content of the tracer element in each region in detected part in described core of lithium ion cell, calculate electrolytic solution absorbed dose and the electrolytic solution actual distribution amount in each region of detected part, electrolytic solution distribution difference obtains by calculating the difference of electrolytic solution actual distribution amount and the theoretical absorbed dose of electrolytic solution.
6. measuring method according to claim 5, it is characterised in that, the calculation formula of described electrolytic solution absorbed dose is: m=M �� C1/C2;
Wherein: m is electrolytic solution absorbed dose, M is the weight in each region of detected part, C1For the content measuring value of detected part each region tracer element, C2For the concentration of tracer element in electrolytic solution;
The calculation formula of described electrolytic solution actual distribution amount is: F=m/S;
Wherein: the area in each region of detected part is S;
The theoretical absorbed dose of described electrolytic solution is the electrolyte content after the hole of detected part is filled by electrolytic solution completely.
7. measuring method according to claim 1, it is characterised in that, the equipment adopting ionic trace method to measure tracer element content is selected from inductively coupled plasma atomic emission spectrometer.
8. measuring method according to claim 1, it is characterised in that, the shell of described core of lithium ion cell is selected from metal or non-metal case, it is preferable that box hat or aluminium shell.
9. measuring method according to claim 2, it is characterised in that: the anode pole piece of described battery and cathode pole piece are selected from the embedding de-active material with lithium ion, independently be preferably LiFePO4��LiNiO2��LiCoO2��LiMnO2��LiMn2O4��LiNiaCobMncO2��LiNidCoeAlfO2��Li4Ti5O12, graphite, soft carbon, at least one in hard carbon or alloy; Wherein, a+b+c=1, d+e+f=1; Described electronic isolation film is selected from diversion and the sub diaphragm that do not conduct electricity, at least one that the material of electronic isolation film is selected from PE, PP, PET or its derivative.
10. measuring method according to claim 1, it is characterised in that, containing at least one in cyclic carbonate, linear carbonate in the described electrolytic solution containing tracer element; Containing lithium salt in described electrolytic solution, described lithium salt is selected from LiPF6��LiAsF6��LiBF4��LiBOB��LiBC2O4F2In at least one; The concentration of described lithium salt is 0.6M��2M.
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Family Cites Families (5)
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| CN104280418B (en) * | 2014-10-29 | 2017-01-11 | 广东省标准化研究院 | Safety monitoring method for internal diaphragm of lithium-ion power battery |
-
2015
- 2015-12-30 CN CN201511022584.3A patent/CN105628685B/en active Active
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| CN113495118B (en) * | 2021-07-07 | 2024-02-27 | 远景动力技术(河北)有限公司 | Method and device for testing consumption of electrolyte |
| CN113758979A (en) * | 2021-09-26 | 2021-12-07 | 蜂巢能源科技有限公司 | Detection method for quantitatively detecting distribution of electrolyte in battery and application |
| WO2023050791A1 (en) * | 2021-09-30 | 2023-04-06 | 蜂巢能源科技股份有限公司 | Method for analyzing distribution state of electrolyte in battery cell and application of method |
| CN114354449A (en) * | 2022-01-05 | 2022-04-15 | 惠州亿纬锂能股份有限公司 | Method for testing infiltration degree of winding core |
| CN116092615A (en) * | 2023-04-06 | 2023-05-09 | 宁德时代新能源科技股份有限公司 | Method and device for determining distribution trend of doping element |
| CN116092615B (en) * | 2023-04-06 | 2023-08-29 | 宁德时代新能源科技股份有限公司 | Method and device for determining distribution trend of doping element |
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