Do You Know Why Energy Storage Battery Packs Need to Use Copper Bars for Connection?

For those familiar with the structure of battery packs, whether in new energy vehicles or energy storage systems, it is widely known that copper busbars are commonly used for connections between large battery packs. Why is this the case? This article today will provide you with the answers.

First, let's take a look at the structure of the battery pack. Nowadays, most of the battery packs are connected by copper bars through welding to connect each battery cell together to form a complete battery system. This connection method can ensure stable and reliable electrical connection in the battery pack, preventing electrical failure caused by poor connection during the operation of the battery pack. In some special cases, such as the need to frequently replace battery cells, copper bars may be connected by bolts. This connection method can facilitate the disassembly and replacement of battery cells, but its stability and reliability of electrical connection may be slightly lower than that of welding connection.

It is obvious that both welding and bolted connections require to ensure that the resistance at the connection is as small as possible to minimize energy loss inside the battery pack.

This is where the advantages of copper bars come into play.

First, copper bars used for battery connection have extremely high conductivity.The conductivity of pure copper is second only to silver and much higher than other metals, which enables copper bars to effectively conduct current and ensure the normal operation of the battery system. At the same time, the high conductivity of copper bars can also reduce energy loss and improve the overall efficiency of the battery system.

Secondly, copper bars have good mechanical properties. Copper bars have high strength and good toughness, and can withstand various forces and pressures generated during the operation of battery systems. In addition, copper bars have excellent corrosion resistance and can maintain stable performance in various harsh environments.

Finally, the thermal conductivity of copper bars is also very high. During the operation of battery systems, a large amount of heat is generated. The high thermal conductivity of copper bars can effectively transfer these heat out, prevent the battery from overheating, and ensure the safe operation of the battery system.

Therefore, whether in electric vehicles or solar energy storage systems, we can see the presence of copper busbar connections.

Jintian Copper is a professional manufacturer of copper busbars, with main products including TMY copper busbars, T2 copper busbars, shaped copper busbars, red copper rods, coil busbars, copper wires, etc. Custom sizes and shapes can be tailored to customer requirements, providing stable and reliable solutions for energy storage customers, and earning high praise in the industry. If you have any questions about the products or would like to learn more about copper busbars, please feel free to contact us at the following telephone number: 0574-83005999. Jintian Copper looks forward to cooperating with you to create a better future.