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Preparation method of organic silicon foaming gasket for power battery box body packaging

A box packaging and power battery technology, applied in applications, household components, household appliances, etc., can solve the problems of poor deformation, poor sealing, poor waterproof and anti-aging performance, and achieve good waterproof performance, small permanent compression deformation, Good weather resistance

Inactive Publication Date: 2020-02-21
嘉兴未来新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the poor deformation and poor waterproof and anti-aging performance of the gasket made of PU material during processing; and the silicone splicing gasket has poor sealing due to the joints, which may cause the positive and negative electrodes of the lithium-ion battery to contact. short circuit

Method used

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  • Preparation method of organic silicon foaming gasket for power battery box body packaging
  • Preparation method of organic silicon foaming gasket for power battery box body packaging
  • Preparation method of organic silicon foaming gasket for power battery box body packaging

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preparation example Construction

[0031] A kind of preparation method of the organosilicon foam gasket that is used for power battery case packaging of the present invention, such as figure 1 shown, including the following steps:

[0032] S1, silicone injection;

[0033] S2, pretreatment;

[0034] S3, parameter setting;

[0035] S4, dispensing and curing.

Embodiment 1

[0037] Embodiment 1, a method for preparing a silicone foam gasket used for encapsulation of a power battery box includes the following steps:

[0038] S1. Put the battery box to be packaged on the workbench; transport the prepared organic silica gel A and organic silica gel B to channel A and channel B respectively, and the mass ratio of the two components is A:B=1 :20.

[0039] S2. Set the working temperature of the pretreatment to 10° C. for 2 hours.

[0040] S3. Set the glue dispensing parameters, wherein the walking speed is 0.5m / min, the glue dispensing temperature is 10°C, and the glue spouting amount of the machine head is 0.5g / s.

[0041] S4. Start the dispensing machine, and mix the organic silica gel A and the organic silica gel B at a speed of 500rpm, so that the two components of the organic silica gel are fully mixed, and the glue mixing process is completed; the mixed glue is extruded from the machine head, along the Glue is dispensed at the junction of the ba...

Embodiment 2

[0042] Embodiment 2, a method for preparing a silicone foam gasket used for encapsulation of a power battery box includes the following steps:

[0043] S1. Put the battery box to be packaged on the workbench;

[0044] Transport the prepared silicone silica gel A and silicone silica gel B to channel A and channel B respectively, wherein the mass ratio of the two components is A:B=1:1.

[0045] S2. Set the working temperature of the pretreatment to 20° C. for 2 hours.

[0046] S3. Set the dispensing parameters, wherein, the walking speed is 6m / min, the dispensing temperature is 25°C, and the dispensing amount of the machine head is 2g / s.

[0047] S4. Start the dispensing machine, and mix the organic silica gel A and the organic silica gel B at a speed of 1800rpm, so that the two components of the organic silica gel are fully mixed, and the glue mixing process is completed; the mixed glue is extruded from the machine head, along the Glue is dispensed at the junction of the batt...

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Abstract

The invention relates to the field of power battery packaging, in particular to a preparation method of an organic silicon foaming gasket for power battery box body packaging. The preparation method of the organic silicon foaming gasket for power battery box body packaging comprises the steps of conveying two prepared components including organic silica gel A and organic silica gel B to a channelA and a channel B correspondingly, wherein the mass ratio of the two components is that A:B is from 1:20 to 20:1; keeping the temperature of the organic silica gel A and the organic silica gel B at apretreatment working temperature to prepare well before dispensing; setting dispensing parameters, and programming to control the dispensing parameters according to the shape of a battery pack to be packaged; and starting a dispenser for dispensing, and curing the surface skin layer at room temperature. According to the preparation method, the flame retardant grade reaches the V-0 grade; and the skin layer completely covers the surface of a sealing gasket, so that the permanent compression deformability is small, and the sealing gasket is still able to reach the IPX8 waterproof level after being subjected to high-temperature high-humidity environment, high and low temperature impact and high and low temperature salt spray several hours later.

Description

technical field [0001] The invention relates to the field of power battery packaging, in particular to a method for preparing a silicone foam gasket used for power battery case packaging. Background technique [0002] The development of electric vehicles is a huge system engineering, and the production and safe use of power batteries are an important part of it. At present and in the future, lithium-ion power batteries will also be the most mainstream power supply system for electric vehicles. Lithium-ion batteries have the advantages of high energy density and long life, but if used improperly, there are also potential safety hazards. When there is moisture intrusion, short circuit, overload, shell damage, high temperature, etc., lithium-ion batteries may burn or even explode, which also brings challenges to the safe use of lithium-ion batteries. [0003] When used in electric vehicles, lithium-ion batteries also experience a more severe application environment. During t...

Claims

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Application Information

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IPC IPC(8): B29C44/00C08L83/04C08J9/04B29L31/26
CPCB29C44/00B29L2031/265C08J9/0061C08J9/04C08J2383/04C08J2483/04
Inventor 关晓凤
Owner 嘉兴未来新材料科技有限公司
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