CN209247678U - Battery electrolyte condition checkout gear - Google Patents
Battery electrolyte condition checkout gear Download PDFInfo
- Publication number
- CN209247678U CN209247678U CN201821912160.3U CN201821912160U CN209247678U CN 209247678 U CN209247678 U CN 209247678U CN 201821912160 U CN201821912160 U CN 201821912160U CN 209247678 U CN209247678 U CN 209247678U
- Authority
- CN
- China
- Prior art keywords
- gas
- battery
- gas sensor
- analytical equipment
- checkout gear
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Secondary Cells (AREA)
Abstract
Include: air extractor the utility model relates to lithium ion battery manufacturing technology field more particularly to a kind of battery electrolyte condition checkout gear, the detection device, is used to extract the gas of inside battery when detecting；Gas sensor generates response signal to the gas of extraction, and to analytical equipment output signal change information；Analytical equipment, receives the signal intensity information of gas sensor input, and carries out signal resolution processing, exports the information of corresponding gas content；Exhaust pipe is connected with air extractor, gas sensor and analytical equipment respectively.Compared with the prior art, detection device provided by the utility model accurately can be analyzed and be characterized to electrolysis liquid status, it may replace the existing method for analyzing electrolysis liquid status by micro-judgment, greatly improve the reliability and efficiency of analysis, and detection device precision provided by the utility model is reasonable, operation is simple and feasible, avoids the high cost and high operation difficulty of the equipment such as gas-chromatography.
Description
Technical field
The utility model relates to lithium ion battery manufacturing technology fields more particularly to a kind of battery electrolyte state to examine
Survey device.
Background technique
Global energy day is becoming tight, and ecological environment is worsening, and exploitation and application problem about new-energy automobile have become
The focus tried to explore for various countries' auto industry.Along with China put into effect new energy subsidy policy and dynamics continuous upgrading,
Domestic electric car rapid development, the research about battery is more and more popular.In actual production, it would be desirable to for much asking
Topic battery core is analyzed, and is reliably produced according to improve with obtaining.But there are also many processes in the research process of battery
Can not rationally quantify, especially with regard to the analysis of electrolyte, even more based on micro-judgment, can not by reasonable index come
Characterize the state of electrolyte.
In actual Battery Plant, without professional equipments such as gas-chromatographies, also without other any detection battery electrolytes
The device and method of state.The judgement of battery electrolyte state is substantially carried out according to the characterize data of battery performance preliminary
Judgement, then battery is disassembled, by observed during the dismantling of battery free electrolyte number, color, infiltration
Degree analyzes the state of electrolyte.But this method can accurately not judge the state of electrolyte, and each is joined
The comparison standards that all do not determine of number, fully rely on the experience of people to analyze, not only unreliable, but also are difficult to learn and inherit.
Therefore, logic support is a lack of about the analysis method of electrolysis liquid hold-up at this stage；And dismantling battery is time-consuming and laborious, work
Low efficiency.
In view of this, it is necessory to provide a kind of technical solution to solve the above problems.
Utility model content
The purpose of this utility model is that: in view of the deficiencies of the prior art, and provide a kind of battery electrolyte state-detection
Device and detection method, to solve to change electrolyte in current battery core research the means for lacking quantitative analysis, and can not
Accurate electrolyte of analyzing is with the state of electrolyte when battery core exception.
To achieve the goals above, the utility model uses following technical scheme:
A kind of battery electrolyte condition checkout gear, the detection device include:
Air extractor is used to extract the gas of inside battery when detecting；
Gas sensor generates response signal to the gas of extraction, and to analytical equipment output signal change information；
Analytical equipment, receives the signal intensity information of gas sensor input, and carries out signal resolution processing, and output corresponds to
Gas content information；
Exhaust pipe is connected with air extractor, gas sensor and analytical equipment respectively.
Wherein, the electrolyte state-detection principle of the utility model is as follows:
Electrolyte carries out irreversible in the battery, and main air-generating reaction is as follows:
As can be seen that the predominant gas that electrolyte reaction generates is CO2And C2H4, and formula (2) and formula (3) they are to form SEI film
When key reaction, gas content therein variation can effectively characterize the consumption of the film forming agent in electrolyte, and film forming agent
Variation again be influence the electrolyte service life major influence factors.Therefore, it is derived by the variation to gas content in battery
It is electrolysed the variation of liquid status, and then analyzes the state of electrolyte, can preferably assess the performance of electrolyte.
Main component according to gas in experiment statistics electrolyte is as shown in the table:
It is not difficult to find out according to upper table, the main component CO of gas2And C2H4Content difference it is larger, thus can be simple
Pass through CO2And C2H4Ratio it is preliminary the state for judging electrolyte it is whether good, to achieve the purpose that preliminary analysis.
Therefore, the utility model gas according to caused by the air-generating reaction of electrolyte inversely derives substance in electrolyte
Variable condition, and then the change procedure of electrolyte is analyzed, the influence for analysis electrolyte to battery cycle life provides reliably
Foundation.
It further include exhaust-gas treatment dress as the preferred embodiment of battery electrolyte condition checkout gear described in the utility model
It sets, is connected respectively with gas sensor and air extractor by exhaust pipe.
It further include pumping needle tubing as the preferred embodiment of battery electrolyte condition checkout gear described in the utility model,
One end is connected with the input terminal of exhaust pipe, and the other end is for being inserted into inside battery, to export the gas in battery.
As the preferred embodiment of battery electrolyte condition checkout gear described in the utility model, the gas sensor is
Resistive memory gas sensor.Wherein, gas sensor is a key component of the present apparatus.It can detecte specific gas
Concentration information because the electric parameter (such as resistance value of resistor-type gas sensor) of gas sensor and tested gas concentration it
Between there is dependences.Therefore, the utility model generates induction to gas using gas sensor, then passes through analytical equipment pair
The content that just can be derived that inside battery gas is analyzed in the variation of gas sensor, and then analyzes the shape of electrolyte in battery
State.
As the preferred embodiment of battery electrolyte condition checkout gear described in the utility model, the analytical equipment is gas
Matter coupled HPLC analyzer or gas analyzer.Preferably gas chromatography mass spectrometry chromatograph (GC-MS), when mixed gas enters color
After composing column, adsorbent is different to the adsorption capacity of each ingredient, is separated in chromatographic column, to be detected by the detector.
In addition, the utility model also provides a kind of side for carrying out battery electrolyte state-detection using above-mentioned detection device
Method, comprising the following steps:
S1, the inside that will be evacuated needle tubing insertion mesuring battary, open air extractor, the gas of inside battery are extracted out；
S2, gas pass through gas sensor along exhaust pipe, and gas sensor, which generates, to be responded and transmit response signal
To analytical equipment；
S3, analytical equipment are analyzed and processed response signal, and export the information of corresponding gas content；
S4, the current state of battery fluid is detected and judged by the content information of gas.
The detection method provides reliable data for the analysis of battery performance, is matched according to the reservoir quantity of electrolyte and ingredient
Than obtaining theoretical composition transfer data, then measure the actual constituent variable condition of electrolyte, more can accurately analyze electrolysis
Influence of the variation of liquid to battery core performance.
As the preferred embodiment of battery electrolyte condition detection method described in the utility model, in step S2, gas after
It is continuous that emission-control equipment is entered by exhaust pipe, the harmful components in gas are removed, purified gas is arranged through air extractor
Out.Primary waste gases ingredient is HF, can carry out reactive absorption with NaOH solution in emission-control equipment and generate salt, in this way can be effective
Avoid injury of the exhaust gas to laboratory technician.
As the preferred embodiment of battery electrolyte condition detection method described in the utility model, in step S2, the sound
Induction signal is that gas componant and concentration information are converted to electric signal.
As the preferred embodiment of battery electrolyte condition detection method described in the utility model, in step S4, when measuring
CO2When gas content is more than the 50% of total gas content, it may be determined that Moisture high UCL in electrolyte.
As the preferred embodiment of battery electrolyte condition detection method described in the utility model, in step S4, work as C2H4:
CO2Ratio be 1.1~1.4 when, electrolyte cycle performance is normal；Work as C2H4:CO2Ratio be lower than 1 when, electrolyte cyclicity
It can be abnormal.
The utility model has the beneficial effects that: the utility model passes through the application of air-sensitive component, gas sensing is utilized
Device generates response to gas, then carries out analysis to the variation of gas sensor by analytical equipment and obtain containing for inside battery gas
Amount, and then come the current state of analyzing and determine electrolyte in battery, and solid data are provided for experimental analysis.Therefore
Detection device and method provided by the utility model accurately can be analyzed and be characterized to electrolysis liquid status, may replace existing lean on
Micro-judgment greatly improves the reliability and efficiency of analysis, and provided by the utility model come the method for analyzing electrolysis liquid status
Detection device precision is reasonable, and operation is simple and feasible, avoids the high cost and high operation difficulty of the equipment such as gas-chromatography.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
In figure: 1- air extractor；2- gas sensor；3- analytical equipment；4- exhaust pipe；5- emission-control equipment；6-
It is evacuated needle tubing；7- battery.
Specific embodiment
To keep the technical solution of the utility model and advantage clearer, below in conjunction with specific embodiment and specification
Attached drawing is described in further detail the utility model and its advantages, but the embodiments of the present invention is not limited to
This.
Embodiment 1
As shown in Figure 1, a kind of battery electrolyte condition checkout gear, including air extractor 1, gas sensor 2, analysis are set
Standby 3, exhaust pipe 4 and pumping needle tubing 6；Air extractor 1 is when detecting for extracting the gas inside battery 7；Gas sensor 2
Response signal generated to the gas of extraction, and to 3 output signal change information of analytical equipment；Analytical equipment 3 receives gas sensing
The signal intensity information that device 2 inputs, and signal resolution processing is carried out, export the information of corresponding gas content；Exhaust pipe 4 divides
It is not connected by the modes such as being spirally connected, being clamped with air extractor 1, gas sensor 2 and analytical equipment 3；Be evacuated 6 one end of needle tubing with
The input terminal of exhaust pipe 4 is connected, and the other end is for being inserted into inside battery 7, to export the gas in battery 7.
Wherein, it should be noted that air extractor 1, gas sensor 2, analytical equipment 3 and pumping needle tubing 6 can lead to
It crosses commercially available purchase to obtain, concrete model is not especially limited, can be selected according to actual needs.
Preferably, which further includes emission-control equipment 5, by exhaust pipe 4 respectively with gas sensor 2
It is connected with air extractor 1.Emission-control equipment 5 is used to remove the harmful components in gas, such as in emission-control equipment 5
NaOH solution is filled for absorbing HF, exhaust gas is can effectively avoid in this way and laboratory technician is damaged.
Preferably, gas sensor 2 is resistive memory gas sensor.Wherein, gas sensor 2 is the present apparatus
One key component.Its concentration information that can detecte specific gas, because of electric parameter (such as resistor-type air-sensitive of gas sensor 2
The resistance value of sensor) and tested gas concentration between there is dependences.Therefore, the utility model utilizes gas sensor
2 pairs of gases generate induction, then are analyzed by analytical equipment 3 variation of gas sensor 2 and just be can be derived that inside battery 7
The content of gas, and then analyze the state of electrolyte in battery 7.
Preferably, analytical equipment 3 is gas chromatography mass spectrometry chromatograph or gas analyzer.More preferably gas chromatography mass spectrometry chromatography
Analyzer (GC-MS), after mixed gas enters chromatographic column, adsorbent is different to the adsorption capacity of each ingredient, in chromatographic column
It is separated, to be detected by the detector.
Embodiment 2
The battery of a circulation diving is detected using the device of embodiment 1, specific steps are as follows:
S1, the inside that will be evacuated the insertion mesuring battary 7 of needle tubing 6, open air extractor 1, the gas inside battery 7 are taken out
Out；
S2, gas pass through resistive memory gas sensor along exhaust pipe 4, and gas sensor 2 generates response (i.e.
Gas componant and concentration information are converted into electric signal), and response signal is transferred to analytical equipment 3；
S3, analytical equipment 3 are analyzed and processed response signal, and export the information of corresponding gas content；It measures
CO2Gas content is more than the 50% of total gas content；
S4, it can be determined that inside battery 7 based on side reaction, and big volume production gas, primarily determine that 7 internal moisture of battery is super
Mark is a main cause of the circulation diving of battery 7.
Therefore, which provides reliable data for the analysis of battery performance, according to the reservoir quantity of electrolyte and at
Distribution ratio obtains theoretical composition transfer data, then measures the actual constituent variable condition of electrolyte, more can accurately analyze
Influence of the variation of electrolyte to battery core performance.
Preferably, in step S2, gas continues through exhaust pipe 4 and enters emission-control equipment 5, removes having in gas
Evil ingredient, purified gas are discharged through air extractor 1.Primary waste gases ingredient is HF, can use NaOH in emission-control equipment 5
Solution carries out reactive absorption and generates salt, can effectively avoid injury of the exhaust gas to laboratory technician in this way.
Embodiment 3
Using the cycle performance of the device detection battery electrolyte of embodiment 1, specific steps are as follows:
S1, the inside that will be evacuated the insertion mesuring battary 7 of needle tubing 6, open air extractor 1, the gas inside battery 7 are taken out
Out；
S2, gas pass through resistive memory gas sensor along exhaust pipe 4, and gas sensor 2 generates response (i.e.
Gas componant and concentration information are converted into electric signal), and response signal is transferred to analytical equipment 3；
S3, analytical equipment 3 are analyzed and processed response signal, and export the information of corresponding gas content；It is right respectively
The battery 7 of different use states is analyzed, statistical parameter delta data；
S4, it obtains: working as C2H4:CO2Ratio be 1.1~1.4 when, electrolyte cycle performance is normal；Work as C2H4:CO2Ratio
When value is lower than 1, electrolyte cycle performance is abnormal.
Because 7 internal gas content of battery and corresponding percentage are also being sent out with the variation of electrolyte inner material
Raw corresponding variation.Therefore, fast and reliable analysis can be done to the fixed product of electrolyte using this detection method.
According to the disclosure and teachings of the above specification, the utility model those skilled in the art can also be to above-mentioned reality
The mode of applying is changed and is modified.Therefore, the utility model is not limited to above-mentioned specific embodiment, all this field skills
It is practical new that art personnel any conspicuous improvement made on the basis of the utility model, replacement or modification belong to this
The protection scope of type.In addition, these terms are intended merely to facilitate although using some specific terms in this specification
It is bright, any restrictions are not constituted to the utility model.
Claims (5)
1. a kind of battery electrolyte condition checkout gear, which is characterized in that the detection device includes:
Air extractor is used to extract the gas of inside battery when detecting；
Gas sensor generates response signal to the gas of extraction, and to analytical equipment output signal change information；
Analytical equipment, receives the signal intensity information of gas sensor input, and carries out signal resolution processing, exports corresponding gas
The information of body content；
Exhaust pipe is connected with air extractor, gas sensor and analytical equipment respectively.
2. battery electrolyte condition checkout gear according to claim 1, it is characterised in that: further include exhaust-gas treatment dress
It sets, is connected respectively with gas sensor and air extractor by exhaust pipe.
3. battery electrolyte condition checkout gear according to claim 1, it is characterised in that: it further include pumping needle tubing,
One end is connected with the input terminal of exhaust pipe, and the other end is for being inserted into inside battery, to export the gas in battery.
4. battery electrolyte condition checkout gear according to claim 1, it is characterised in that: the gas sensor is electricity
Resistive semiconductor gas sensor.
5. battery electrolyte condition checkout gear according to claim 1, it is characterised in that: the analytical equipment is makings
Coupled HPLC analyzer or gas analyzer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821912160.3U CN209247678U (en) | 2018-11-20 | 2018-11-20 | Battery electrolyte condition checkout gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821912160.3U CN209247678U (en) | 2018-11-20 | 2018-11-20 | Battery electrolyte condition checkout gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209247678U true CN209247678U (en) | 2019-08-13 |
Family
ID=67529152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821912160.3U Active CN209247678U (en) | 2018-11-20 | 2018-11-20 | Battery electrolyte condition checkout gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209247678U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109342511A (en) * | 2018-11-20 | 2019-02-15 | 东莞锂威能源科技有限公司 | Battery electrolyte condition checkout gear and detection method |
| CN111060655A (en) * | 2019-12-28 | 2020-04-24 | 安徽正熹标王新能源有限公司 | Battery is electrolyte selective examination device for production line |
-
2018
- 2018-11-20 CN CN201821912160.3U patent/CN209247678U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109342511A (en) * | 2018-11-20 | 2019-02-15 | 东莞锂威能源科技有限公司 | Battery electrolyte condition checkout gear and detection method |
| CN109342511B (en) * | 2018-11-20 | 2024-09-17 | 东莞锂威能源科技有限公司 | Battery electrolyte state detection device and detection method |
| CN111060655A (en) * | 2019-12-28 | 2020-04-24 | 安徽正熹标王新能源有限公司 | Battery is electrolyte selective examination device for production line |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209247678U (en) | Battery electrolyte condition checkout gear | |
| CN101339138A (en) | Explosive stability nitrous oxides concentration detection device | |
| CN106706543A (en) | Method for detecting content of carbon and sulfur in graphene based on high temperature combustion infrared absorption process | |
| WO2023050791A1 (en) | Method for analyzing distribution state of electrolyte in battery cell and application of method | |
| CN205263037U (en) | Element form on -line measuring device | |
| CN106501442A (en) | A kind of quality determining method of a kind of reed mentioned in ancient books Huang powder for clearing lung-heat | |
| CN109030528A (en) | A kind of method that X-ray fluorescence spectra analyzes fluorine chlorine in smelting smoke dust | |
| CN106289433A (en) | Method for measuring volume of each component gas in secondary battery | |
| CN113390978A (en) | Analysis method for determining content of free testosterone in human serum sample by equilibrium dialysis and LC-MS/MS technology | |
| CN106525999A (en) | Gas chromatographic detection method for gas | |
| CN101144825A (en) | Method for measuring tobacco protein | |
| CN101101279A (en) | Quantitative analysis method for battery electrolyte organic components | |
| CN205353065U (en) | Detect marsh gas gas composition's integrated online analysis device simultaneously | |
| CN103712974A (en) | Method for treating lithium ion battery diaphragm and simultaneously measuring contained metal elements | |
| CN203941099U (en) | Gas phase molecular absorption spectrometer with on-line oxidation device | |
| CN109959645A (en) | The evaluation method and device of lithium ion battery case nuclear structural materials cladding completeness | |
| CN201034987Y (en) | Gas chromatograph gas analysis twice sample introduction device | |
| CN213580824U (en) | Sampling titration detection device for water quality analysis | |
| CN109342511A (en) | Battery electrolyte condition checkout gear and detection method | |
| CN108008060A (en) | The assay method and reagent of hydroxyproline in a kind of feed | |
| CN107976469A (en) | A kind of soil nutrient device for fast detecting based on Artificial Olfactory | |
| CN103969323A (en) | Method for determining As content in tobacco and tobacco product by utilizing <75>AS<16>O<+> | |
| CN101750431A (en) | Method for analyzing irregular pig iron | |
| CN113607525B (en) | Vacuum blood collection tube additive for blood digestion and preparation method thereof | |
| CN116660466A (en) | Complementary sensing array detection device and method for constant-temperature vacuum oil-gas separation of circulating oil |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |