How is bakelite board specifically used in battery pack shells?

In electric vehicles, energy storage power stations, consumer electronics and other fields, battery packs are key carriers for energy storage and supply. The battery pack shell must not only protect the internal battery cells from external physical damage, but also have good insulation, flame retardancy, corrosion resistance and other properties to ensure that the battery pack operates safely and stably in complex environments. Bakelite board has gradually become one of the preferred materials for the manufacture of battery pack shells due to its excellent electrical insulation, mechanical strength, heat resistance and other properties.

Performance advantages of bakelite board

Excellent insulation performance

Bakelite board has extremely high resistivity and breakdown voltage. This feature enables it to effectively isolate current, prevent short circuits and leakage, and thus ensure the stable operation of electronic equipment. This performance is particularly important in devices such as battery packs that have extremely high electrical safety requirements.

Good mechanical strength

It has high resistance to bending, impact and wear. Even in complex or harsh working environments, bakelite board can maintain stable physical properties, thereby extending the service life of the equipment. Whether it is bumps during vehicle driving or long-term operation of energy storage power stations, bakelite board can provide reliable protection.

Excellent heat resistance

Bakelite board can maintain stable performance at higher temperatures and is not prone to deformation or melting. Because of this, it is very suitable for use in high-temperature environments, such as insulating parts of equipment such as motors and transformers, and also for equipment such as battery packs that generate heat during charging and discharging.

Easy to process

Bakelite board has good machinability. It can be easily processed into various shapes and sizes by cutting, drilling, milling, etc. to meet different design and production needs. In the manufacture of battery pack shells, this flexibility allows designers to customize the design according to actual conditions.

Stable chemical properties

Bakelite board has good corrosion resistance to most chemicals and is not easily corroded by corrosive substances such as acids and alkalis. This feature ensures that it can be used stably for a long time in complex environments, and can maintain the integrity of the battery pack shell even in humid and chemically polluted environments.

Application of bakelite board in the design of battery pack shell structure

Shell main frame

Bakelite board is often used to manufacture the main frame of the battery pack shell, providing solid support and reliable protection for the battery cells. With its high strength and rigidity, the shell can withstand the weight of the battery and external mechanical loads. When designing the main frame of the shell, bakelite board can be processed into components of different shapes and sizes such as bottom plates, side plates, and top plates according to the size and layout requirements of the battery pack. Subsequently, these components are assembled into a complete shell structure by bolting, gluing or welding. This modular design greatly facilitates the installation, maintenance and upgrading of the battery pack.

Insulating partition

In the battery pack, insulating partitions are usually set to prevent electrical short circuits between different battery cells or between battery cells and the shell. Bakelite board is an ideal material for making insulating partitions, which can effectively isolate each battery cell and ensure that the heat dissipation channel between battery cells is unobstructed. The thickness and shape of the insulating partition can be designed according to the arrangement of the battery and the electrical safety requirements, and the general thickness is between 1-5mm. For example, in some battery packs composed of square batteries, bakelite insulating partitions are placed between adjacent batteries, which not only provide insulation but also do not take up too much space inside the battery pack.

Sealing and protective components

Bakelite board can also be used to manufacture sealing gaskets, protective covers and other components of battery pack shells. Sealing gaskets can ensure the sealing of the battery pack shell, effectively preventing moisture, dust and other impurities from entering the battery pack, thereby avoiding affecting the performance and life of the battery. Protective covers can protect the interfaces, connectors and other parts of the battery pack to prevent damage from external objects. Although these components are small in size, they are crucial to the overall performance and safety of the battery pack. For example, at the charging interface of the battery pack, the Bakelite protective cover can effectively prevent rainwater from splashing into the interface and avoid short circuit accidents.