阅读说明：本技术 一种新能源汽车锂离子动力电池壳体拉深油及其制备方法 (New energy automobile lithium ion power battery shell drawing oil and preparation method thereof ) 是由 赵波 于 2021-08-10 设计创作，主要内容包括：本发明公开了一种新能源汽车锂离子动力电池壳体拉深油及其制备方法,包括如下以重量计算的制备原料：摩擦改进剂：15-35％,含硫极压剂：3-10％,含磷极压剂：1-4％,抗氧剂：0.2-1.0％,聚和酯：2-5％,金属减活剂：0.05-0.1％,余量为基础油。本发明设计巧妙,它具有典型的润滑性能,高的抗氧化安定性,良好的可清洗性,既能满足自动化连续拉伸生产线的需要,也适用于单机手动操作,拉伸后工件可以方便地用水剂清洗剂清洗,保证一次合格率不低于98％。(The invention discloses new energy automobile lithium ion power battery shell drawing oil and a preparation method thereof, wherein the new energy automobile lithium ion power battery shell drawing oil comprises the following preparation raw materials by weight: friction modifiers: 15-35%, sulfur-containing extreme pressure agent: 3-10%, phosphorus-containing extreme pressure agent: 1-4%, antioxidant: 0.2-1.0%, poly and ester: 2-5%, metal deactivator: 0.05-0.1 percent, and the balance of base oil. The invention has the advantages of ingenious design, typical lubricating property, high anti-oxidation stability and good cleanability, can meet the requirements of an automatic continuous stretching production line, is also suitable for single-machine manual operation, can conveniently clean a stretched workpiece by using a water agent cleaning agent, and ensures that the one-time qualified rate is not less than 98%.)

1. The drawing oil for the lithium ion power battery shell of the new energy automobile is characterized by comprising the following preparation raw materials by weight: friction modifiers: 15-35%, sulfur-containing extreme pressure agent: 3-10%, phosphorus-containing extreme pressure agent: 1-4%, antioxidant: 0.2-1.0%, poly and ester: 2-5%, metal deactivator: 0.05-0.1 percent, and the balance of base oil.

2. The new energy automobile lithium ion power battery shell drawing oil as claimed in claim 1, wherein the base oil is one or a mixture of 150N, 250N, 350N, 400N, 500N and 150 BS.

3. The new energy automobile lithium ion power battery shell drawing oil as claimed in claim 1, wherein the friction modifier comprises fatty alcohol and synthetic ester, the fatty alcohol is one or more of lauryl alcohol, oleyl alcohol, 2-ethyldecanol, 2-hexyldecanol and 2-octyldodecanol, and the synthetic ester is n-butyl stearate, isooctyl oleate, isooctyl stearate, ethylene glycol oleate, trimethylolpropane oleate or pentaerythritol tetraoleate.

4. The new energy automobile lithium ion power battery shell drawing oil as claimed in claim 1, wherein the sulfur-containing extreme pressure agent is one or more of a mixture of sulfurized fatty acid methyl ester, sulfurized triglyceride, sulfurized olefin, sulfurized isobutylene, dialkyl dithiocarbamate, di-tert-butyl trisulfide, di-tert-dodecyl trisulfide and di-tert-dodecyl pentasulfide; in the composition containing the sulfur extreme pressure agent, the mass fraction of sulfur element does not exceed 1 percent of the total amount of drawing oil; the total sulfur content of the sulfurized fatty acid methyl ester is less than or equal to 11 percent, and the active sulfur content is less than or equal to 1 percent; the total sulfur content of the sulfurized triglyceride is 10% or less, and the active sulfur content is 1% or less.

5. The new energy automobile lithium ion power battery shell drawing oil as claimed in claim 1, wherein the phosphorus-containing extreme pressure agent is a combination of one or more of di-n-butyl phosphite, triaryl phosphite, tricresyl phosphate, 2-dodecyl phosphate, 2-octadecyl phosphate, isooctyl acidic phosphate ester octadecyl amine salt, alkyl phosphate ester amine salt Additin RC3760, and alkyl phosphate ester amine salt Deophos 228.

6. The new energy automobile lithium ion power battery shell drawing oil as claimed in claim 1, wherein the antioxidant is a combination of amine antioxidant and phenol antioxidant, and the amine antioxidant is dinonyl diphenylamine, dioctyl diphenylamine and butyl octyl diphenylamine; the phenolic antioxidant is 2, 6-di-tert-butyl-p-cresol, and the mass ratio of the amine antioxidant to the phenolic antioxidant is 2: 3.

7. The new energy automobile lithium ion power battery shell drawing oil as claimed in claim 1, wherein the polyester is one of Priolube 3986, Perfad 8100, Perfad8400, SYN ESTER GY 10, SYN ESTER GY 59, SYN ESTER GY 500, Hostagliss1510 and PALUB 8466.

8. The new energy automobile lithium ion power battery shell drawing oil as claimed in claim 1, wherein the metal deactivator is one or more of benzotriazole, methyl benzotriazole, N, N '-di-N-butylaminomethylene benzotriazole, and N, N' -di (2-ethylhexyl) -methyl-1H-benzotriazole-1-methylamine.

9. A preparation method of new energy automobile lithium ion power battery shell drawing oil is characterized by comprising the following steps:

(1) putting the components into a blending kettle in sequence according to a proportion;

(2) starting stirring, and controlling the speed at 100-;

(3) starting to heat up to 50-60 ℃;

(4) stirring for 30-40min under heat preservation to obtain the final product.

Technical Field

The invention relates to new energy automobile lithium ion power battery shell drawing oil and a preparation method thereof.

Background

In order to deal with the increasingly prominent environmental pollution problem, research and development and popularization of new energy automobiles are accelerated in various countries in the world. At present, the automobile production and sale scale in China is the first world, and the automobile production and sale scale is expected to continue to increase in the future. The rapid development of new energy automobiles also enables the demand of various parts to rapidly increase.

The battery pack is a core energy source of the new energy automobile and provides driving electric energy for the whole automobile, and the battery pack main body is formed by enveloping the shell. The design of the power battery system is based on the premise of meeting the power requirement of the whole vehicle and other designs. Meanwhile, the internal structure, safety, management design and other aspects of the battery system are considered. The battery pack shell is used as a bearing body of the battery module and plays a key role in the safe operation and protection of the battery module.

At present, the appearance of the domestic automobile power battery shell can be divided into three categories: the square battery is mainly characterized in that the square battery has higher energy density and capacity and longer service life, and the regular shape can be designed in a customized manner according to the specific requirements of a carrying product.

In order to achieve the aims of energy conservation, high efficiency and ultra-long endurance mileage of the new energy automobile, the power battery shell is developed towards the direction of higher strength, larger volume and lower weight.

The drawing oil is a working medium for determining the product quality and the production efficiency in the production process of the battery shell. In the stretching process, the drawing oil provides excellent lubricity, reduces the abrasion of a die and a punch, prolongs the service life, ensures the smoothness of a battery case, avoids the oxidation of the battery case in the processing and storage processes and reduces the friction heat in the stretching process. And the product percent of pass is improved.

The traditional deep drawing oil is prepared by blending additives such as animal oil, vegetable oil, chlorinated paraffin, polybutene and the like. The deep drawing oil has poor oxidation resistance, and after high temperature, animal oil and vegetable oil are very easy to oxidize to generate colloid and oil sludge, so that various performances are reduced; the chlorinated paraffin is decomposed to generate hydrogen chloride gas, so that workpieces and dies are corroded, and the chlorinated paraffin is harmful to the environment. The polybutylene has poor cleaning performance and high cleaning reject ratio.

In order to respond to the call of energy conservation and emission reduction, the resource utilization efficiency of enterprises is improved in the production process, the generation and the emission of pollutants in the production process are reduced, and clean production is realized, so that the generation amount of hazardous wastes is reduced to the maximum extent from the source. Drawing oil is required to be reusable for many times. Obvious oxidation phenomenon does not occur in the drawing process, all performances can still meet the drawing requirements, and the drawn workpiece can be easily cleaned by an environment-friendly water-based cleaning agent.

The existing deep drawing oil for lithium ion power battery cases of new energy automobiles in China can be used on a manual production line, but a large number of problems can occur on a full-automatic production line, and the deep drawing oil is mainly shown in the following steps:

1) the lubricating property is insufficient, the workpiece is scratched in the drawing process, the phenomenon of galling of a die occurs, and the yield is lower than 80%;

2) poor oxidation resistance, discoloration during recycling, and reduced surface brightness;

3) poor cleanability, low cleaning efficiency, high cleaning reject ratio, increased cost and increased pollution.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides new energy automobile lithium ion power battery shell drawing oil and a preparation method thereof.

The new energy automobile lithium ion power battery shell drawing oil comprises the following preparation raw materials by weight: friction modifiers: 15-35%, sulfur-containing extreme pressure agent: 3-10%, phosphorus-containing extreme pressure agent: 1-4%, antioxidant: 0.2-1.0%, poly and ester: 2-5%, metal deactivator: 0.05-0.1 percent, and the balance of base oil.

As a further improvement, the base oil is one or a mixture of 150N, 250N, 350N, 400N, 500N and 150 BS.

As a further improvement, the friction modifier comprises fatty alcohol and synthetic ester, wherein the fatty alcohol is one or a mixture of more of lauryl alcohol, oleyl alcohol, 2-ethyldecyl alcohol, 2-hexyldecyl alcohol and 2-octyldodecyl alcohol, and the synthetic ester is n-butyl stearate, isooctyl oleate, isooctyl stearate, ethylene glycol oleate, trimethylolpropane oleate or pentaerythritol tetraoleate.

As a further improvement, the sulfur-containing extreme pressure agent is one or a mixture of more of sulfurized fatty acid methyl ester, sulfurized triglyceride, sulfurized olefin, sulfurized isobutylene, dialkyl dithiocarbamate, di-tert-butyl trisulfide, di-tert-dodecyl trisulfide and di-tert-dodecyl pentasulfide; in the composition containing the sulfur extreme pressure agent, the mass fraction of sulfur element does not exceed 1 percent of the total amount of drawing oil; the total sulfur content of the sulfurized fatty acid methyl ester is less than or equal to 11 percent, and the active sulfur content is less than or equal to 1 percent; the total sulfur content of the sulfurized triglyceride is 10% or less, and the active sulfur content is 1% or less.

As a further improvement, the phosphorus-containing extreme pressure agent is a composition of one or more of di-n-butyl phosphite, triaryl phosphite, tricresyl phosphate, 2-dodecyl phosphate, 2-octadecyl phosphate, isooctyl acid phosphate ester octadecyl amine salt, alkyl phosphate ester amine salt Additin RC3760 and alkyl phosphate ester amine salt Deophos 228.

As a further improvement, the antioxidant is a composition of amine antioxidant and phenolic antioxidant, and the amine antioxidant is dinonyl diphenylamine, dioctyl diphenylamine and butyl octyl diphenylamine; the phenolic antioxidant is 2, 6-di-tert-butyl-p-cresol, and the mass ratio of the amine antioxidant to the phenolic antioxidant is 2: 3.

As a further improvement, the polyester is one of Priolube 3986, Perfad 8100, Perfad8400, SYN ESTER GY 10, SYN ESTER GY 59, SYN ESTER GY 500, Hostagliiss 1510 and PALUB 8466.

As a further improvement, the metal deactivator is a composition of one or more of benzotriazole, methylbenzotriazole, N, N '-di-N-butylaminomethylene benzotriazole, and N, N' -di (2-ethylhexyl) -methyl-1H-benzotriazole-1-methylamine.

9. A preparation method of new energy automobile lithium ion power battery shell drawing oil comprises the following steps:

(1) putting the components into a blending kettle in sequence according to a proportion;

(2) starting stirring, and controlling the speed at 100-;

(3) starting to heat up to 50-60 ℃;

(4) stirring for 30-40min under heat preservation to obtain the final product.

Has the advantages that:

the invention has the advantages of ingenious design, typical lubricating property, high anti-oxidation stability and good cleanability, can meet the requirements of an automatic continuous stretching production line, is also suitable for single-machine manual operation, can conveniently clean a stretched workpiece by using a water agent cleaning agent, and ensures that the one-time qualified rate is not less than 98%.

Detailed Description

Example 1:

the new energy automobile lithium ion power battery shell drawing oil comprises the following components in parts by weight:

example 2:

the new energy automobile lithium ion power battery shell drawing oil comprises the following components in parts by weight:

example 3:

the new energy automobile lithium ion power battery case tensile oil performance index is as follows:

experimental results show that the lubricating properties of the examples 1, 2 and 3 provided by the invention can reach the performances of the same type of products sold in the market, wherein the drawing oil provided by the example 1 has higher maximum non-seizure load PB and better lubricating property.

Investigating the oxidation resistance of the drawing oil to the aluminum material, adopting a 3003 aluminum alloy test piece to test the corrosion condition of the aluminum material under different time lengths and different temperatures, and observing the surface discoloration condition of the aluminum sheet, wherein the test result is as follows:

the experimental results show that the examples 1, 2 and 3 provided by the invention have no corrosion to the aluminum material at the high temperature of 100 ℃, have no corrosion for a short time of 3 hours at the high temperature of 150 ℃, and generate corrosion only in a long time of 12 hours. The performance of the aluminum drawing oil exceeds that of the aluminum drawing oil of the same type on the market.

And (3) investigating the performance of the drawing oil in the recycling process, collecting the used old oil, reusing the used old oil, and testing the drawing qualification rate, wherein the test result is as follows:

experimental results show that after the commercially available aluminum deep drawing oil is repeatedly used for many times, the performance of the commercially available aluminum deep drawing oil is rapidly reduced, so that the yield is greatly reduced. The performances of the examples 1, 2 and 3 provided by the invention are better than those of the commercial aluminum drawing oil after being used for many times.

Inspecting the cleaning performance of the drawing oil, using different new drawing oil, and inspecting the cleaning qualification rate after cleaning by using an ultrasonic cleaning machine, wherein the test result is as follows:

experimental results show that the cleaning performance of the examples 1, 2 and 3 provided by the invention is superior to that of commercial aluminum deep drawing oil.

The test result shows that the new energy automobile lithium ion power battery shell drawing oil has typical lubricating property, high oxidation resistance stability and good cleanability, can meet the actual requirements of an automatic continuous drawing production line, is also suitable for single-machine manual operation, can be conveniently cleaned by a water agent cleaning agent after being drawn, ensures that the primary qualified rate of a system is more than 98 percent, and is far higher than that of drawing oil of market brands and drawing oil of part of imported brands.