What is liquid cooling plate?
Liquid cooling plates is considered as an active cooling components for battery packs, especially for Li-ion battery packs. Heat generated and accumulated while battery go through charging and discharging. Without heat management, battery life and performance would be seriously impacted. Thus liquid cooling plates is commonly deployed in today's Li-ion battery packs.
What is liquid cooling?
Liquid cooling mainly uses water-glycol mixture or freon-like coolant. These fluids runs inside of cooling components, absorb heat from the interface where they run through. Fluids working mode: cool fluids go into components via inlets–> absorb heat –> go out of components via outlets–> fluids cooled down via external chiller –> again go into components.
What advantages does liquid cooling have?
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What material is used in making battery cooling plates?
Aluminum is the most preferred material, because aluminum is lighter and recyclable. 3003, 3005, 6061, 6063 are some of the common aluminum alloys used. 3 series enjoy excellent anti-corrosion performance, in most 3 series cooling plates projects, it can withstand over 1000 hours of salt spray test. 6 series material is usually used in higher strength solution, some PDU cooling plates which is expected to bear weight load are mostly seen in 6 series.
How many kinds of liquid cold plates are there?
a) Hydroformed cooling plates, also called stamped cooling plates, it is most universal solution for most of Li-ion battery packs.
b) Extruded cooling plates. The main body of the parts is done by extrusion. Internal structure can be customized.
c) FSW cooling plates. FSW stands for Friction Stir Welding. It is a very reliable way of joining separate metal pieces into one. FSW can maintain 70% of original metal's mechanical strength.
d) Machining cooling plates. This kind of cooling plates are mainly used in developing proto samples. Investment of tooling is not needed, so usually machining cooling plates can be finished with a shorter lead time.
e) Roll-bond cooling plates. Roll-bond plates were widely used in home appliance industry, for example refrigerators. The channels are made by high pressure air blowing.