Flame-retardant structure of power battery

Abstract

The utility model discloses a flame-retardant structure of a power battery, which comprises a plurality of battery cells, super cotton flame-retardant layers are arranged among the battery cells or on the surfaces of the battery cells, coatings are coated on the surfaces of the super cotton flame-retardant layers, the adjacent battery cells are connected through copper bars, and the bottoms of the battery cells are mounted on a plastic base. The super cotton is a novel high-performance material, has the advantages of excellent high temperature resistance and flame retardant property, light weight, environmental protection and the like, and is applied to the flame retardant design of the power battery, so that the safety of a battery system is remarkably improved.

Description

Technical Field

[0001] The utility model relates to a flame retardant structure, in particular to a flame retardant structure of a power battery. Background Art

[0002] With the rapid development of electric vehicles and portable electronic devices, the safety of power batteries is gaining increasing attention. Power batteries can experience thermal runaway under conditions such as high temperature, high pressure, and collisions, leading to fire or explosion. Traditional flame-retardant materials such as asbestos and fiberglass have numerous shortcomings in terms of performance and environmental friendliness.

[0003] Therefore, developing safe power batteries has become an urgent issue to be addressed. Summary of the Invention

[0004] In order to solve the problem of power battery safety, a power battery flame retardant structure is provided to improve the safety performance of the battery system and reduce the risk of fire and explosion.

[0005] The utility model provides the following technical solutions:

[0006] A flame-retardant structure for a power battery includes multiple battery cells. A super cotton flame-retardant layer is arranged between or on the surface of each battery cell. The surface of the super cotton flame-retardant layer is coated with a coating. Adjacent battery cells are connected by copper bars, and the bottom of the battery cell is installed on a plastic base.

[0007] Furthermore, the thickness of the super cotton flame retardant layer is 1 mm to 3 mm.

[0008] Furthermore, the material component of the super cotton flame retardant layer is high-purity aluminum silicate fiber.

[0009] Furthermore, the coating is a resin layer or a glue layer.

[0010] Super cotton is a new type of high-performance material with excellent high-temperature resistance and flame retardant properties. It also has the advantages of being lightweight and environmentally friendly. Applying super cotton to the flame retardant design of power batteries can significantly improve the safety of the battery system.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] 1. Improved the safety performance of power batteries and reduced the risk of fire and explosion caused by thermal runaway;

[0013] 2. Super cotton material is lightweight and environmentally friendly, does not increase the weight of the battery module, meets modern green environmental protection requirements, and utilizes the excellent performance of super cotton material to effectively improve the safety of the battery system;

[0014] 3. Easy to process and install, suitable for power battery systems of different types and structures. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic structural diagram of the utility model.

[0016] Figure 2 This is a schematic structural diagram of the super cotton flame retardant layer of the utility model.

[0017] Figure 3 This is a schematic diagram of the utility model's super cotton flame retardant layer installed between battery cells.

[0018] In the picture: 1. Battery cell; 2. Super cotton flame retardant layer; 3. Coating; 4. Copper busbar; 5. Plastic base. Implementation Method

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] See also Figure 1-3 The utility model provides a flame retardant structure for a power battery, comprising a plurality of battery cells 1. A super cotton flame retardant layer 2 is arranged between or on the surface of each battery cell to prevent heat transfer and flame spread. The surface of the super cotton flame retardant layer is coated with a coating 3. Adjacent battery cells 1 are connected by copper busbars 4, and the bottom of the battery cell 1 is mounted on a plastic base 5.

[0021] The thickness of the super cotton flame retardant layer is 1mm to 3mm.

[0022] The material composition of the super cotton flame retardant layer is high-purity aluminum silicate fiber.

[0023] The coating layer 3 is a resin layer or a glue layer to enhance its durability and moisture resistance.

[0024] The super cotton flame retardant layer is made of a super cotton material with high temperature stability and good flame retardant properties, and the preferred thickness range is 1.5 mm to 2 mm.

[0025] The specific configuration methods of the super cotton flame retardant layer include but are not limited to the following:

[0026] 1. Wrap the super cotton directly on the outside of the battery cell;

[0027] 2. Insert super cotton interlayer between the battery cells;

[0028] 3. Compound the super cotton material into the structural parts of the battery module, such as setting a super cotton layer inside the battery shell.

[0029] Example 1

[0030] In a power battery module, a 1.5mm thick super cotton flame-retardant layer is placed between each battery cell. Made from high-purity aluminum silicate fiber, the super cotton is surface-coated for enhanced durability and moisture resistance. This structure significantly improves the battery's high-temperature resistance and flame retardancy, effectively preventing the spread of flames in simulated thermal runaway tests.

[0031] Example 2

[0032] In another power battery module, the super cotton material is directly compounded into the battery casing, forming a 3mm thick super cotton lining. This design ensures the structural strength of the battery module while providing excellent flame retardancy.

[0033] in conclusion:

[0034] This utility model provides a new flame retardant solution for power batteries, which utilizes the excellent performance of super cotton materials to effectively improve the safety of the battery system. It is suitable for various types of power batteries and has broad application prospects.

[0035] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A flame retardant structure for a power battery, characterized by: The invention comprises a plurality of battery cells (1), wherein a super cotton flame retardant layer (2) is provided between or on the surface of each battery cell, the surface of the super cotton flame retardant layer is coated with a coating (3), adjacent battery cells (1) are connected via a copper busbar (4), and the bottom of the battery cell (1) is mounted on a plastic base (5).

2. The flame-retardant structure of a power battery according to claim 1, characterized in that: The thickness of the super cotton flame retardant layer (2) is 1 mm to 3 mm.

3. The flame retardant structure of a power battery according to claim 2, characterized in that: The material component of the super cotton flame retardant layer (2) is high-purity aluminum silicate fiber.

4. The flame-retardant structure of a power battery according to claim 1, characterized in that: The coating (3) is a resin layer or a glue layer.

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