Vacuum-brazed liquid cold plates are crafted through a meticulous process involving the machining of two metal plates with interior channels and fin structures, known as zipper fins. These plates are then sealed together inside a vacuum chamber, where a filler metal with a lower melting point is melted into the joints of the cold plate via capillary action. The vacuum environment eliminates the formation of oxides that would typically occur during brazing, negating the need for brazing flux. This results in exceptionally strong joints and allows for the creation of flux-free metal-to-metal connections.
One of the key advantages of vacuum-brazed cold plates is their unmatched design flexibility. Unlike traditional tube and plate cold plates, they are not constrained by bending radius limitations, allowing for more intricate and efficient designs.
A benefit of vacuum-brazed liquid cold plates includes compatibility with industry-standard power module devices such as SiC, GaN, IGBTs, and SCRs. They also offer high thermal performance, lightweight construction for critical applications and low pressure drops ideal for medium and low flow rates. Furthermore, these cold plates undergo rigorous pressure testing to ensure leak-free and corrosion-free performance.
These vacuum-brazed liquid cold plates are well-suited for a wide range of applications, including EV and battery cooling, inverters, aerospace and defense systems, UPS power supplies, data centres, high-power optics, medical equipment, and instrumentation.
The introduction of vacuum-brazed liquid cold plates signifies a commitment to providing cutting-edge thermal management solutions that meet the evolving needs of various industries. With their superior performance and design flexibility, these cold plates can make a significant impact in critical applications requiring efficient heat dissipation.
Customisable options are available to meet diverse cooling needs. Customers can either request modifications to standard cold plates or collaborate with PPM Power’s technical sales team by providing drawings and specifications for bespoke designs. Tailoring cold plates to specific system requirements not only enhances efficiency but also minimizes downtime by reducing failures, resulting in cost savings and shortened testing periods.
Visit the Standard Liquid Cold Plates product page for more technical information or view our full range of Thermal Solutions.
Contact our Technical Sales Team who can help with any queries and order placement.
