CN112201880B - Preparation method of cooling partition plate for lithium battery - Google Patents
Preparation method of cooling partition plate for lithium battery Download PDFInfo
- Publication number
- CN112201880B CN112201880B CN202011037526.9A CN202011037526A CN112201880B CN 112201880 B CN112201880 B CN 112201880B CN 202011037526 A CN202011037526 A CN 202011037526A CN 112201880 B CN112201880 B CN 112201880B
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- Prior art keywords
- dispersion kettle
- dispersion
- agent
- kettle
- fire extinguishing
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/658—Means for temperature control structurally associated with the cells by thermal insulation or shielding
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
- A62D1/00—Fire-extinguishing compositions; Use of chemical substances in extinguishing fires
- A62D1/0092—Gaseous extinguishing substances, e.g. liquefied gases, carbon dioxide snow
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
- B29C39/02—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention discloses a preparation method of a cooling partition plate for a lithium battery, which comprises a dispersion kettle, wherein 56.5% of self-crosslinking acrylic emulsion, 2.5% of hydroxypropyl dispersant, 5% of coupling agent, 1% of flatting agent, 10% of titanium dioxide and 25% of fire extinguishing agent are sequentially added into the dispersion kettle for blending and processing, and the mixture is poured into a special mold for casting after being processed; the dispersion tank is internally provided with a heating device, and the temperature of the dispersion tank can be adjusted in real time. The invention has the advantages of having super strong active cooling function, greatly reducing the occurrence of new energy batteries on fire and explosion, and reducing or avoiding the accidents of fire and even explosion caused by overheating of the new energy batteries.
Description
Technical Field
The invention relates to the technical field of pre-protection of new energy lithium batteries, in particular to a preparation method of a cooling partition plate for a lithium battery.
Background
The new energy automobile is good due to the characteristics of energy conservation and environmental protection, but the highest problem in industrialization is the high sale price. From foreign hybrid electric vehicles, the difference price of the same type of hybrid power and fuel oil Toyota Camry reaches 8-10 ten thousand yuan, while the difference price between the domestic Biedi pure electric vehicle type E6 and the same type of fuel oil vehicle is more than 20 ten thousand. Although the later-stage operation and maintenance cost of the new energy automobile is low, the price difference of one purchase can be filled up gradually, but the high purchase price is undoubtedly an important obstacle for hindering the industrialization of the new energy automobile.
The new energy automobile mainly comprises a battery driving system, a motor system, an electric control system, an assembly and the like. The motor, the electric control and the assembly are basically the same as those of the traditional automobile, and the reason of the price difference is the battery driving system. From the cost composition of the new energy automobile, the battery driving system accounts for 30-45% of the cost of the new energy automobile, and the power lithium battery accounts for about 75-85% of the cost composition of the battery driving system.
The lithium-iron battery is a novel green high-energy chemical power supply which is promoted by the permanent preparation company in America in 2000 and successfully marketed, and shows very excellent performance in the aspects of being applied to electronic equipment and electric toys of required high-energy high-power supplies, and the discharge time of the lithium-iron battery can reach about 6 times of that of an alkali-manganese battery when the discharge current is more than medium; compared with the nickel-hydrogen battery, the battery has the advantages of stable discharge voltage and remarkable storage time.
At present, the phenomena of fire passing, fire striking and explosion of the new energy lithium battery are common phenomena. The inhibition of the overheating of the new energy battery is always a safety technical problem which needs to be overcome urgently at home and abroad.
Disclosure of Invention
The invention aims to provide a preparation method of a cooling partition plate for a lithium battery, which has a super-strong active cooling function and can greatly reduce the occurrence of fire and explosion of new energy batteries, thereby reducing or avoiding the fire and even explosion accidents of the new energy batteries caused by overheating, solving the problems of over fire, fire and explosion of the new energy lithium battery and being a common occurrence phenomenon. The problem of restraining the overheating of the new energy battery is always a safety technical problem which needs to be overcome urgently at home and abroad.
In order to achieve the purpose, the invention provides the following technical scheme: a method for preparing a cooling partition plate for a lithium battery comprises a dispersion kettle, wherein the dispersion kettle is prepared by sequentially adding self-crosslinking acrylic emulsion, hydroxypropyl dispersant, coupling agent, flatting agent, titanium dioxide and fire extinguishing agent into the dispersion kettle for blending and processing, and pouring the processed mixture into a special mold for casting;
the dispersion tank is internally provided with a heating device, and the temperature of the dispersion tank can be adjusted in real time.
As a further scheme of the invention, the fire extinguishing agent is one or more of halon, heptafluoropropane and perfluorohexanone fire extinguishing agents.
As a further scheme of the invention, the proportion of the raw materials of the cooling clapboard is as follows: 56.5 percent of self-crosslinking acrylic emulsion, 2.5 percent of hydroxypropyl dispersant, 5 percent of coupling agent, 1 percent of flatting agent, 10 percent of titanium pigment and 25 percent of fire extinguishing agent.
A preparation method of a cooling partition plate for a lithium battery comprises the following preparation steps:
s1, checking a dispersion kettle before starting to ensure that all data of the dispersion kettle are normal, and electrifying the dispersion kettle for preparation;
s2, mixing the self-crosslinking acrylic emulsion, the hydroxypropyl dispersant, the coupling agent, the leveling agent, the titanium dioxide and the fire extinguishing agent according to the raw material proportion, and placing the mixture in a container for later use;
s3, adding the self-crosslinking acrylic emulsion into a dispersion kettle, heating the dispersion kettle to 35 ℃, starting the dispersion kettle, and stirring at a constant speed for 60 minutes at a rotation speed of 200 rpm of a rotating mechanism in the dispersion kettle;
s4, adding titanium dioxide into the dispersion kettle, keeping the rotating speed constant, and stirring at a constant speed for 90 minutes to mix;
s5, sequentially adding the leveling agent and the hydroxypropyl dispersant into a dispersion kettle, adjusting the rotating speed to 300 revolutions per minute, and stirring at a constant speed for 60 minutes;
s6, reducing the temperature in the dispersion kettle to 25 ℃, keeping the temperature unchanged, adding a fire extinguishing agent and a coupling agent into the dispersion kettle, adjusting the rotating speed to 100 revolutions per minute, and stirring at a constant speed for 120 minutes;
s7, adding a pH adjusting reagent into the dispersion kettle, and adjusting the pH value of the emulsion to 8 to make the emulsion in alkalescence;
and S8, pouring the prepared emulsion into a special mould, curing at normal temperature for 12 hours, and manufacturing the emulsion into a size meeting the requirement according to the size requirement of the battery plate.
Compared with the prior art, the invention has the following beneficial effects: the temperature-reducing partition board is installed in a new energy lithium battery, the temperature inside the battery is normal at 50-60 ℃, when the temperature of the battery is abnormally increased, the temperature inside the battery reaches 80 ℃, the temperature-reducing partition board automatically releases extinguishing agent gas contained inside the battery to reduce the temperature of the battery to below 50 ℃, and the problems of fire and explosion caused by overheating of the battery are prevented by inhibiting the temperature rise and reducing the temperature. The 'fire detection function' in the cooling partition plate can be automatically started due to the temperature rise, fire extinguishing gas is released, and the temperature is controlled within a safe range. The occurrence of fire and explosion of new energy batteries is greatly reduced, so that the accidents of fire and even explosion of the new energy batteries caused by overheating are reduced or avoided.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the following embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown herein, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
The invention provides an embodiment: a method for preparing a cooling partition plate for a lithium battery comprises a dispersion kettle, wherein 56.5% of self-crosslinking acrylic emulsion, 2.5% of hydroxypropyl dispersant, 5% of coupling agent, 1% of flatting agent, 10% of titanium dioxide and 25% of fire extinguishing agent are sequentially added into the dispersion kettle for blending and processing, and the mixture is poured into a special mold for casting after processing; the dispersion tank is internally provided with a heating device, and the temperature of the dispersion tank can be adjusted in real time.
The fire extinguishing agent is one or more of Halon, heptafluoropropane and perfluorohexanone, preferably perfluorohexanone.
The temperature-reducing partition board is installed in a new energy lithium battery, the temperature inside the battery is normal at 50-60 ℃, when the temperature of the battery is abnormally increased, the temperature inside the battery reaches 80 ℃, the temperature-reducing partition board automatically releases extinguishing agent gas contained inside the battery to reduce the temperature of the battery to below 50 ℃, and the problems of fire and explosion caused by overheating of the battery are prevented by inhibiting the temperature rise and reducing the temperature.
Example 2
The invention provides an embodiment: a preparation method of a cooling partition plate for a lithium battery comprises the following preparation steps:
s1, checking a dispersion kettle before starting to ensure that all data of the dispersion kettle are normal, and electrifying the dispersion kettle for preparation;
s2, mixing the self-crosslinking acrylic emulsion, the hydroxypropyl dispersant, the coupling agent, the leveling agent, the titanium dioxide and the fire extinguishing agent according to the raw material proportion, and placing the mixture in a container for later use;
s3, adding the self-crosslinking acrylic emulsion into a dispersion kettle, heating the dispersion kettle to 35 ℃, starting the dispersion kettle, and stirring at a constant speed for 60 minutes at a rotation speed of 200 rpm of a rotating mechanism in the dispersion kettle;
s4, adding titanium dioxide into the dispersion kettle, keeping the rotating speed unchanged, and stirring at a constant speed for 90 minutes to mix;
s5, sequentially adding the leveling agent and the hydroxypropyl dispersant into a dispersion kettle, adjusting the rotating speed to 300 revolutions per minute, and stirring at a constant speed for 60 minutes;
s6, reducing the temperature in the dispersion kettle to 25 ℃, keeping the temperature unchanged, adding a fire extinguishing agent and a coupling agent into the dispersion kettle, adjusting the rotating speed to 100 revolutions per minute, and stirring at a constant speed for 120 minutes;
s7, adding a pH adjusting reagent into the dispersion kettle, and adjusting the pH value of the emulsion to 8 to make the emulsion in alkalescence;
and S8, pouring the prepared emulsion into a special mould, curing at normal temperature for 12 hours, and manufacturing the emulsion into a size meeting the requirement according to the size requirement of the battery plate.
Example 3
The invention provides an embodiment: a preparation method of a cooling partition plate for a lithium battery comprises the following steps of:
sampling the finished product and sending the sample into a laboratory for quality detection;
ODP (depletion potential value of ozone layer) and GWP (room temperature effect value) are measured according to a detection method specified by HJ/T225-2005, and the ODP detection result is 0; the GWP detection result is <1; and (3) measuring results: and meets the standard.
The weather resistance test is carried out according to the detection method specified in the GB/T3511-2018 national standard, and the measurement result is as follows: and meets the standard.
And (5) carrying out batch production on products meeting the standard.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (2)
1. The preparation method of the cooling partition plate for the lithium battery comprises a dispersion kettle and is characterized in that: the self-crosslinking acrylic emulsion, the hydroxypropyl dispersant, the coupling agent, the flatting agent, the titanium dioxide and the fire extinguishing agent are sequentially added into a dispersion kettle for blending and processing, and the mixture is poured into a special mold for casting after processing; built-in heating device of dispersion tank, dispersion tank's temperature can be adjusted in real time, and the fire extinguishing agent is perfluor hexanone fire extinguishing agent, cooling baffle raw materials proportion: 56.5 percent of self-crosslinking acrylic emulsion, 2.5 percent of hydroxypropyl dispersant, 5 percent of coupling agent, 1 percent of flatting agent, 10 percent of titanium pigment and 25 percent of fire extinguishing agent.
2. The method for preparing a cooling separator for a lithium battery as claimed in claim 1, wherein: the preparation steps are as follows:
s1, checking a dispersion kettle before starting to ensure that all data of the dispersion kettle are normal, and electrifying the dispersion kettle for preparation;
s2, mixing the self-crosslinking acrylic emulsion, the hydroxypropyl dispersant, the coupling agent, the leveling agent, the titanium dioxide and the fire extinguishing agent according to the raw material proportion, and placing the mixture in a container for later use;
s3, adding the self-crosslinking acrylic emulsion into a dispersion kettle, heating the dispersion kettle to 35 ℃, starting the dispersion kettle, and stirring at a constant speed for 60 minutes at a rotation speed of 200 rpm of a rotating mechanism in the dispersion kettle;
s4, adding titanium dioxide into the dispersion kettle, keeping the rotating speed constant, and stirring at a constant speed for 90 minutes to mix;
s5, sequentially adding the leveling agent and the hydroxypropyl dispersant into a dispersion kettle, adjusting the rotating speed to 300 revolutions per minute, and stirring at a constant speed for 60 minutes;
s6, reducing the temperature in the dispersion kettle to 25 ℃, keeping the temperature unchanged, adding a fire extinguishing agent and a coupling agent into the dispersion kettle, adjusting the rotating speed to 100 revolutions per minute, and stirring at a constant speed for 120 minutes;
s7, adding a pH adjusting reagent into the dispersion kettle, and adjusting the pH value of the emulsion to 8 to make the emulsion weakly alkaline;
and S8, pouring the prepared emulsion into a special mould, curing at normal temperature for 12 hours, and manufacturing the emulsion into a size meeting the requirement according to the size requirement of the battery plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011037526.9A CN112201880B (en) | 2020-09-28 | 2020-09-28 | Preparation method of cooling partition plate for lithium battery |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011037526.9A CN112201880B (en) | 2020-09-28 | 2020-09-28 | Preparation method of cooling partition plate for lithium battery |
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| CN112201880A CN112201880A (en) | 2021-01-08 |
| CN112201880B true CN112201880B (en) | 2022-11-11 |
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| CN113350730B (en) * | 2021-04-26 | 2022-04-29 | 深圳供电局有限公司 | Lithium ion battery extinguishing agent and preparation method and application thereof |
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| CN103468208A (en) * | 2013-09-25 | 2013-12-25 | 深圳市旭冉电子有限公司 | Abrasive and coating slurry of lithium-ion power battery diaphragm and preparation methods thereof |
| CN109346648A (en) * | 2018-10-15 | 2019-02-15 | 苏州清陶新能源科技有限公司 | A kind of fire-retardant gel ceramic diaphragm and preparation method thereof |
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| US6202755B1 (en) * | 1999-06-03 | 2001-03-20 | Fidelity Holdings Inc. | Fire extinguishing agent and method of preparation and use thereof |
| JP2003071446A (en) * | 2001-09-04 | 2003-03-11 | Sony Corp | Electrolytic ion water making method, electrolytic ion water maker and electrolytic ion water making apparatus |
| CN102218272B (en) * | 2010-04-15 | 2013-09-25 | 吕晓龙 | Separating membrane and manufacturing method thereof |
| CN103468209A (en) * | 2013-09-25 | 2013-12-25 | 深圳市旭冉电子有限公司 | Abrasive and coating slurry of lithium-ion power battery diaphragm and preparation methods thereof |
| CN103554349B (en) * | 2013-11-04 | 2016-01-20 | 常州天马集团有限公司（原建材二五三厂） | Self-crosslinking acrylic ester emulsion and preparation method thereof |
| US10002719B2 (en) * | 2014-04-21 | 2018-06-19 | Lg Chem, Ltd. | Separator having binder layer, and electrochemical device comprising the separator and method of preparing the separator |
| CN104001297B (en) * | 2014-05-21 | 2016-08-24 | 中国南方电网有限责任公司调峰调频发电公司 | A kind of lithium ion battery fire-fighting experiment cabinet carrying automatic alarm and fire extinguishing system |
| CN109428027A (en) * | 2017-09-03 | 2019-03-05 | 湖州南浔遨优电池有限公司 | A kind of heat-insulating, fire-preventing anti-explosion battery group |
| CN108997846A (en) * | 2018-07-11 | 2018-12-14 | 甘灿新 | A kind of glue composite fireproof slurry and preparation method thereof |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103468208A (en) * | 2013-09-25 | 2013-12-25 | 深圳市旭冉电子有限公司 | Abrasive and coating slurry of lithium-ion power battery diaphragm and preparation methods thereof |
| CN109346648A (en) * | 2018-10-15 | 2019-02-15 | 苏州清陶新能源科技有限公司 | A kind of fire-retardant gel ceramic diaphragm and preparation method thereof |
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