What are the main technologies for power battery water-cooling plates?

In electric vehicles (EVs) and energy storage systems, thermal management of batteries is crucial to ensure system stability, performance, and lifespan. As an efficient heat dissipation solution, power battery water-cooled plates are becoming an indispensable component in modern battery systems.

What are the main technologies for power battery water-cooling plates?

1. Cooling channel design:

·Internal structure: The water-cooling plate of the power battery is equipped with complex cooling channels for flowing cooling water.

These channels are ingeniously designed to maximize the contact area between water flow and battery surface, thereby optimizing thermal conductivity efficiency.

·Uniform flow: In order to ensure cooling effect, channel design needs to avoid dead corners and uneven flow of water flow.

Efficient flow design ensures that the entire battery pack maintains a uniform temperature distribution during operation.

2. Material selection:

·Aluminum alloy: Aluminum alloy is a common material for water-cooling plates, widely used due to its good thermal conductivity and low weight. Among them, aluminum alloy is usually stamped into the desired cooling plate shape, including cooling channels and other structures, using a stamping machine to manufacture aluminum stamping water-cooling plates.

·Copper alloy: When higher thermal conductivity is required, copper alloy is also an option, but due to its high cost and weight, it is usually used in higher performance applications.

3. Sealing technology:

·Leak proof design: The sealing performance of the water-cooling plate is crucial, and high-quality sealing materials and technologies must be used to prevent water leakage.

Common sealing techniques include O-rings, sealants, etc.

·Corrosion resistant coating: In order to improve the durability of water-cooling plates under various environmental conditions, corrosion-resistant coating treatment is usually applied to the cooling channels and connecting parts.

4. Manufacturing process:

·Precision machining: The manufacturing of water-cooling plates requires precision machining technology to ensure precise dimensions and good surface smoothness of the cooling channels, thereby improving thermal conductivity efficiency and reliability.

·Welding and connection: Common connection processes include laser welding and brazing, which can provide high-strength and high sealing connections, manufacture brazed water-cooling plates, and avoid water leakage problems.

In electric vehicles (EVs) and energy storage systems, thermal management of batteries is crucial to ensure system stability, performance, and lifespan. As an efficient heat dissipation solution, power battery water-cooled plates are becoming an indispensable component in modern battery systems.