Flame-retardant structure of energy storage battery

Abstract

The utility model discloses a flame-retardant structure of an energy storage battery. The flame-retardant structure comprises a plurality of battery cells, a mica sheet flame-retardant layer is arranged between every two battery cells, a module anti-jet isolation cover is arranged above each group of battery cells, a battery pack fireproof cover plate is arranged above each module anti-jet isolation cover, and the periphery of each group of battery cells is wrapped with a battery pack isolation plate. The mica sheet flame-retardant layer is used for preventing heat transfer and flame spread, so that the safety performance of the energy storage battery is improved, and fire and explosion risks caused by thermal failure are reduced; the mica sheet material is light and environment-friendly, the weight of the battery module is not increased, and the modern green and environment-friendly requirements are met; and the device is easy to process and mount and can be suitable for energy storage battery systems of different types and structures.

Description

Technical Field

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

[0002] Energy storage batteries are widely used in electric vehicles, renewable energy storage, and portable electronic devices. With the increasing popularity of these devices, battery safety issues are becoming increasingly prominent. Energy storage batteries can experience thermal failure under conditions such as high temperatures, overcharging, and mechanical damage, potentially causing fire or explosion. Traditional thermal management and flame retardant measures, such as air cooling, liquid cooling, and thermal insulation materials, suffer from low thermal management efficiency, heavy materials, and poor environmental performance. Therefore, the development of new and efficient flame retardant materials and thermal management solutions has become an urgent issue. Summary of the Invention

[0003] In order to solve the problem of thermal failure of energy storage batteries, a flame retardant structure of energy storage batteries is provided. Mica sheets are used as flame retardant materials for thermal failure management of energy storage batteries to improve the safety performance of the battery system and reduce the risk of fire and explosion.

[0004] The utility model provides the following technical solutions:

[0005] A flame-retardant structure for an energy storage battery includes multiple battery cells. A mica flame-retardant layer is arranged between each battery cell. A module anti-spray isolation cover is arranged above each group of battery cells. A battery pack fireproof cover is arranged above the module anti-spray isolation cover. Each group of battery cells is wrapped with a battery pack isolation plate.

[0006] Furthermore, the mica sheet flame retardant layer is made of mica material and has a thickness ranging from 0.1 mm to 2 mm.

[0007] Furthermore, the thickness of the mica sheet flame retardant layer is 0.5 mm to 1 mm.

[0008] Furthermore, the surface of the flame retardant layer of the mica sheet is coated with a coating, which is a resin layer or a glue layer.

[0009] Mica is a natural mineral with excellent high-temperature resistance, good electrical insulation, and flame retardancy. It is also lightweight, non-toxic, and environmentally friendly. Applying mica sheets to thermal failure management in energy storage batteries can significantly improve battery system safety.

[0010] Compared with the prior art, the beneficial effects of the present invention are:

[0011] 1. Improve the safety performance of energy storage batteries and reduce the risk of fire and explosion caused by thermal failure;

[0012] 2. Mica sheet material is lightweight and environmentally friendly, does not increase the weight of the battery module, and meets modern green environmental protection requirements;

[0013] 3. Easy to process and install, suitable for energy storage battery systems of different types and structures. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic structural diagram of the utility model.

[0015] Figure 2 This is a schematic structural diagram of the flame retardant layer of the mica sheet of the present invention.

[0016] In the figure: 1. Battery cell; 2. Mica flame retardant layer; 3. Module anti-spray isolation cover; 4. Battery pack fireproof cover; 5. Battery pack isolation plate; 6. Coating. Implementation Method

[0017] 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.

[0018] See also Figure 1-2 The utility model provides a flame retardant structure of an energy storage battery, including multiple battery cells 1, a mica flame retardant layer 2 is arranged between each battery cell to prevent heat transfer and flame spread, a module anti-spray isolation cover 3 is arranged above each group of battery cells 1, and a battery pack fireproof cover 4 is arranged above the module anti-spray isolation cover 3, and each group of battery cells 1 is wrapped with a battery pack isolation plate 5.

[0019] The mica flame retardant layer is made of mica material with high temperature stability and good flame retardant performance, and has a thickness ranging from 0.1 mm to 2 mm. Preferably, the mica flame retardant layer has a thickness of 0.5 mm to 1 mm.

[0020] Figure 2 As shown, the material composition of the mica sheet flame retardant layer is high-purity natural mica; the surface of the mica sheet flame retardant layer is coated, and the coating 6 uses a resin layer or a glue layer to enhance the insulation performance.

[0021] The specific configuration methods of the mica sheet flame retardant layer include but are not limited to the following:

[0022] 1. Place the mica sheet directly between the battery cells;

[0023] 2. Insert mica sheet spacers between battery cells;

[0024] 3. Compound the mica sheet material into the structural parts of the battery module, such as setting a mica sheet layer inside the battery shell.

[0025] Example 1

[0026] A 0.5mm thick flame-retardant layer of mica sheets is placed between each battery cell. The mica sheets are made from high-purity natural mica and are surface-coated to enhance mechanical strength and moisture resistance. Experimental results show that this structure significantly improves the battery's high-temperature resistance and flame retardancy, effectively preventing the spread of flames in simulated thermal failure tests.

[0027] Example 2

[0028] Mica sheet material is directly laminated to the interior of the battery casing, forming a 1mm thick mica sheet lining. Test results show that this design ensures the structural strength of the battery module while providing excellent flame retardancy.

[0029] Based on the combined design of mica substrate and thermal insulation material, this thermal shielding material is used to prevent, delay or curb thermal runaway of lithium batteries. It has excellent heat resistance and electrical insulation properties, and is particularly suitable as a battery spacer for lithium batteries. It is widely used in the field of fireproof insulation and heat insulation of electrochemical energy storage.

[0030] By utilizing the excellent performance of mica sheet materials, the safety of the battery system can be effectively improved. It is suitable for various types of energy storage batteries and has broad application prospects.

[0031] 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 an energy storage battery, characterized in that: The invention comprises a plurality of battery cells (1), a mica sheet flame retardant layer (2) is provided between each battery cell, a module anti-spraying isolation cover (3) is provided above each group of battery cells (1), a battery pack fireproof cover plate (4) is provided above the module anti-spraying isolation cover (3), and each group of battery cells (1) is surrounded by a battery pack isolation plate (5).

2. The flame retardant structure of an energy storage battery according to claim 1, characterized in that: The mica sheet flame retardant layer (2) is made of mica material and has a thickness ranging from 0.1 mm to 2 mm.

3. The flame retardant structure of an energy storage battery according to claim 2, characterized in that: The thickness of the mica sheet flame retardant layer is 0.5 mm to 1 mm.

4. The flame retardant structure of an energy storage battery according to claim 1, characterized in that: The surface of the mica sheet flame retardant layer (2) is coated with a coating (6), and the coating (6) is a resin layer or a glue layer.

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