CN113004861A

CN113004861A - Battery sealing glue and manufacturing method thereof

Info

Publication number: CN113004861A
Application number: CN202110209621.0A
Authority: CN
Inventors: 徐增富; 潘晓华; 沈行洲
Original assignee: Hangzhou Eternal Battery Co ltd
Current assignee: Hangzhou Eternal Battery Co ltd
Priority date: 2021-02-24
Filing date: 2021-02-24
Publication date: 2021-06-22

Abstract

The battery sealing glue comprises the following components: no. 30 asphalt, petroleum resin, liquid paraffin and gear oil, wherein the mass ratio of the components is as follows: the number 30 asphalt accounts for 60-65%, the petroleum resin accounts for 7.5-12.5%, the liquid paraffin accounts for 19.3-23.3%, and the gear oil accounts for 3.2-8.2%; preparing corresponding components according to the mass ratio, then placing the components into a container to be heated until the components are melted into asphalt materials, fully and uniformly stirring the components, and filtering the mixture by a 200-mesh screen to obtain a finished product. According to the characteristics of asphalt and the difference of the environmental temperature, the battery seal glue of the invention finds an optimal balance point by adding special additives, ensures that the battery seal glue has good fluidity, does not have wire drawing, does not flow after high-temperature spraying, and has strong adaptability to temperature.

Description

Battery sealing glue and manufacturing method thereof

Technical Field

The invention relates to the technical field of battery production, in particular to battery sealing glue and a manufacturing method thereof.

Background

The production of cardboard battery, in order to increase the capacity of battery, strengthen the effect of sealing, make seal not influenced by temperature variation, the current domestic battery manufacturing enterprise generally uses the rubber coating of pitch base, its characteristic is, in limited space, the joint department of spraying a small amount of rubber coating at sealing washer and zinc section of thick bamboo and carbon-point just can play better sealed effect to the colloid of the department of sealing can not become dry, can not trickle. However, the existing glue has the problems that the fluidity is too low, the wire drawing is caused, the asphalt is easy to flow downwards during high-temperature spraying, and the like.

Disclosure of Invention

The invention aims to find an optimal balance point according to the characteristics of asphalt and the difference of the environmental temperature, and provides a battery sealing glue and a manufacturing method thereof, which ensure that the battery sealing glue has good fluidity, no wire drawing, no flowing after high-temperature spraying and strong adaptability to temperature by adding a special additive.

In order to achieve the purpose, the invention provides the following technical scheme:

the battery sealing glue comprises the following components: no. 30 asphalt, petroleum resin, liquid paraffin and gear oil, wherein the mass ratio of the components is as follows: the asphalt 30 accounts for 60-65%, the petroleum resin accounts for 7.5-12.5%, the liquid paraffin accounts for 19.3-23.3%, and the gear oil accounts for 3.2-8.2%.

The scheme takes asphalt as a basic raw material, and the asphalt has the characteristics of high-temperature flowing, viscosity, low-temperature hardening, embrittlement and viscosity reduction; the temperature of the glue in the use of battery sealing is 90-120 ℃, the temperature is too low for asphalt to flow and can cause wire drawing, so that liquid paraffin is added in the scheme, on one hand, the asphalt can be diluted to increase the flow, on the other hand, the viscosity of the asphalt can be reduced, the asphalt is not required to be drawn, the production and the use are convenient, and the problems of flow and wire drawing are solved; after the asphalt is diluted, if the asphalt is sprayed on the zinc cylinder wall and the carbon rod, the asphalt is easy to flow downwards, so petroleum resin which can be mutually dissolved with the asphalt and the liquid paraffin is added in the scheme, the resin is required to be solid below 60 ℃ and quickly becomes liquid above 90 ℃, and thus, the asphalt well meets the process requirement of gluing and ensures that the asphalt does not flow after gluing and spraying; therefore, the gluing basically meets the requirements of the process, but the problem of sensitivity to temperature adaptation exists, the glue becomes thin and flows easily when the temperature is high, and the nozzle is blocked when the temperature is low, so that a proper amount of gear oil is added finally in the scheme, so that the glue can keep a certain temperature, the state is stable, and the production is smooth.

Preferably, the ratio of the No. 30 asphalt is increased with the increase of the air temperature, and the ratio of the liquid paraffin is decreased with the increase of the air temperature.

Preferably, the liquid paraffin is No. 300 liquid paraffin.

Preferably, the petroleum resin is C9 petroleum resin.

Preferably, the gear oil is 18-grade gear oil.

Preferably, under winter air temperature conditions, the proportion of the No. 30 asphalt is preferably 62.5%, the proportion of the petroleum resin is preferably 10%, the proportion of the liquid paraffin is preferably 21.8%, and the proportion of the gear oil is preferably 5.7%.

Preferably, under summer air temperature conditions, the proportion of the No. 30 asphalt is 65%, the proportion of the petroleum resin is 10%, the proportion of the liquid paraffin is 19.3%, and the proportion of the gear oil is 5.7%.

In the scheme, after the temperature rises in summer, the proportion of the asphalt can be properly increased, the proportion of the liquid paraffin is reduced, and the adjustment range is within 4 percent; in addition, some fine adjustment can be made to the proportion according to the test data of the purchased asphalt and the using effect of the production line; in a limited space, a small amount of the battery sealing glue is sprayed at the joint of the sealing ring, the zinc cylinder and the carbon rod, so that a good sealing effect can be achieved, the glue at the sealing position cannot dry and flow, and the glue is well adhered to the sealing position after high-temperature storage at 45 ℃ and low-temperature test at-18 ℃.

A manufacturing method of battery seal glue is to prepare corresponding components according to mass ratio, then to put the components into a container to be heated until the components are melted into asphalt materials, to fully stir the materials evenly, and to obtain a finished product after filtering the materials by a 200-mesh screen.

The four materials are proportionally heated in a stainless steel pot at the temperature of about 160 ℃ to ensure that all the materials are melted, fully stirred and filtered by a 200-mesh screen to obtain a finished product, and the finished product can be used; if the asphalt material is not used temporarily, the asphalt material can be placed into a ferrous container, and when the asphalt material is required to be used, the asphalt material is heated and melted for use.

Production practices prove that the battery sealing glue prepared by the method is used on a battery production line and has good spraying effect; the finished product of the battery is prepared and stored at high temperature of 45 ℃ without glue leakage; the adhesion of the glue with the zinc cylinder, the carbon rod and the sealing ring is still good after a test at-18 ℃. After the battery is subjected to discharge detection, all indexes are normal.

Compared with the prior art, the invention has the beneficial effects that:

the battery sealing glue of the invention finds an optimal balance point by adding special additives according to the characteristics of asphalt and the difference of the environmental temperature, and provides a method for ensuring that the battery sealing glue has good fluidity, no wire drawing, no flowing after high-temperature spraying and strong adaptability to temperature.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without any creative work based on the embodiments of the present invention belong to the protection scope of the present invention.

The invention provides a technical scheme that:

the battery sealing glue comprises the following components: no. 30 asphalt, petroleum resin, liquid paraffin and gear oil, wherein the mass ratio of the components is as follows: 60-65% of No. 30 asphalt, 7.5-12.5% of petroleum resin, 19.3-23.3% of liquid paraffin and 3.2-8.2% of gear oil; the liquid paraffin is No. 300 liquid paraffin, the petroleum resin is C9 petroleum resin, and the gear oil is No. 18 gear oil.

In example 1, under winter air temperature conditions, the proportion of No. 30 asphalt is preferably 62.5%, the proportion of petroleum resin is preferably 10%, the proportion of liquid paraffin is preferably 21.8%, and the proportion of gear oil is preferably 5.7%.

In example 2, under summer air temperature conditions, the proportion of No. 30 asphalt is preferably 65%, the proportion of petroleum resin is preferably 10%, the proportion of liquid paraffin is preferably 19.3%, and the proportion of gear oil is preferably 5.7%.

The specific implementation process is as follows: the four materials are proportionally heated in a stainless steel pot at the temperature of about 160 ℃ to ensure that all the materials are melted, fully stirred and filtered by a 200-mesh screen to obtain a finished product, and the finished product can be used.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The battery sealing glue is characterized by comprising the following components: no. 30 asphalt, petroleum resin, liquid paraffin and gear oil, wherein the mass ratio of the components is as follows: the asphalt 30 accounts for 60-65%, the petroleum resin accounts for 7.5-12.5%, the liquid paraffin accounts for 19.3-23.3%, and the gear oil accounts for 3.2-8.2%.

2. The battery sealing adhesive according to claim 1, wherein the proportion of the No. 30 asphalt increases with increasing temperature, and the proportion of the liquid paraffin decreases with increasing temperature.

3. The battery sealing paste as claimed in claim 1 or 2, wherein the liquid paraffin is No. 300 liquid paraffin.

4. The battery sealing paste as claimed in claim 1, wherein the petroleum resin is C9 petroleum resin.

5. The battery seal paste as claimed in claim 1, wherein the gear oil is 18-gauge gear oil.

6. The battery sealing adhesive according to claim 1, wherein the proportion of the No. 30 asphalt is preferably 62.5%, the proportion of the petroleum resin is preferably 10%, the proportion of the liquid paraffin is preferably 21.8%, and the proportion of the gear oil is preferably 5.7% under winter air temperature conditions.

7. The battery sealing adhesive according to claim 1, wherein the proportion of No. 30 asphalt is preferably 65%, the proportion of petroleum resin is preferably 10%, the proportion of liquid paraffin is preferably 19.3%, and the proportion of gear oil is preferably 5.7% under summer air temperature conditions.

8. The method for manufacturing the battery seal glue according to claim 1, wherein the corresponding components are prepared according to the mass ratio, then the components are placed into a container to be heated until the components are melted into an asphalt material, the asphalt material is fully and uniformly stirred, and a finished product is obtained after the asphalt material is filtered by a 200-mesh screen.