Rapid forming method of composite material fireproof battery box for vehicle

A composite material and molding method technology, used in battery pack components, battery isolation from its environment, circuits, etc., can solve the fire protection requirements of a single fireproof functional layer battery box, the fire resistance performance is difficult to meet the fire resistance and temperature resistance requirements, and the product volume is difficult to achieve. Production rhythm and cost requirements, etc., to achieve good flame retardant, fire protection and heat insulation effects, achieve lightweight, and meet fire protection requirements.

Active Publication Date: 2020-07-31
杭州卡涞复合材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The current solutions focus more on achieving the fire protection requirements of the battery box by simply adding a certain type of fire protection functional layer. On the one hand, it is difficult to take into account the demand for structural weight reduction, and on the other hand, its limited fire performance is also difficult to meet. Increasing fire resistance and temperature resistance requirements; on the other hand, the implementation process is also more complicated, often requiring secondary molding or higher molding temperature, resulting in higher energy consumption, cost and longer takt time, which is difficult Meet product mass production tact and cost requirements to cope with growing market supply demand

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The invention relates to a fireproof box body of an automobile composite material battery box, which is composed of a composite material layer and a fireproof layer.

[0026] The battery fireproof box contains a flame-retardant resin as a base material, and in this embodiment, a phosphorus-based halogen-free flame-retardant polyurethane fast-curing resin is used as a base material;

[0027] The composite material layer is made of glass fiber fabric or carbon fiber fabric or mixed fiber fabric as the structural reinforcement material of the composite material layer, and its thickness is 0.2mm~4mm;

[0028] The fireproof layer is a mat composed of disordered fibers, including glass fibers or ceramic fibers, adding expanded graphite, high-temperature mineral fibers, and a small amount of organic binder, with a thickness of 0.1mm~1.5mm.

[0029] Its process preparation method comprises the following steps:

[0030] S1: Material preparation: Install the above-mentioned fibe...

Embodiment 2

[0040] The invention relates to a fireproof box body of an automobile composite material battery box, which is composed of a composite material layer and a fireproof layer.

[0041] The battery fireproof box contains a fast-curing resin plus a flame retardant as a base material. In this embodiment, a fast-curing epoxy resin is used to add aluminum hydroxide as a base material. The ratio of epoxy resin to aluminum hydroxide is 100: (3 ~10);

[0042] The composite material layer is made of glass fiber fabric or carbon fiber fabric or mixed fiber fabric as the structural reinforcement material of the composite material layer, and its thickness is 0.2mm~4mm;

[0043] The fireproof layer is a mat composed of disordered fibers, including glass fibers or ceramic fibers, adding expanded graphite, high-temperature mineral fibers, and a small amount of organic binder, with a thickness of 0.1mm~1.5mm.

[0044] Its process preparation method comprises the following steps:

[0045] S1: M...

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Abstract

The invention discloses a rapid forming method of a composite material fireproof battery box for a vehicle, and belongs to the technical field of battery application. Due to application of a high-performance continuous fiber fabric and a reasonable structural laying design, lightweight of the battery box can be realized to a great extent; and meanwhile, when a composite material part is formed, afireproof layer material, quickly-cured flame-retardant resin and the high-performance continuous fiber fabric are utilized for one-time curing, and better flame-retardant, fireproof and heat-insulating effects are achieved. Due to application of the high-performance fiber fabric and the reasonable structural laying design, lightweight of the battery box can be realized to a great extent; by meansof an RTM technology rapid curing integrated forming mode, the takt time is short, process steps are simplified, the lightweight and fireproof requirements are met, and the cost is greatly reduced.

Description

technical field [0001] The invention belongs to the field of battery application technology, and in particular relates to a rapid prototyping method for a composite material battery case with fire resistance. Background technique [0002] With the continuous growth of the electric vehicle market and the continuous improvement of battery system safety and energy density ratio requirements, higher requirements are put forward for the lightweight and fireproof performance of the battery box. The upper cover and lower box of the battery box are important components of the battery box. In order to meet higher lightweight requirements, the material of the battery box box has undergone steel, aluminum alloy, glass fiber SMC, and high-performance continuous fiber composite materials. , in which high-performance continuous fibers have higher specific strength and specific modulus, thereby achieving weight reduction. However, with the new national standard requirements for thermal ru...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/48B29B11/00B29B11/02B29B11/06B29B11/04H01M2/10A62C3/16H01M50/249
CPCB29C70/48B29B11/00B29B11/02B29B11/06B29B11/04A62C3/16B29L2031/7146H01M50/24H01M50/20Y02E60/10
Inventor 何鹏颜磊黄姿禹张伟
Owner 杭州卡涞复合材料科技有限公司
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