Cavity-type water cooling plate dedicated for new energy vehicle power battery

 

 

Adopting an integrated cavity flow channel structure, it delivers a stable and high-efficiency temperature control solution for vehicle thermal management. Suitable for battery PACK of passenger and commercial vehicles as well as heat dissipation of CTP/CTC integrated chassis.

 

 

The cavity-type water cooling plate is integrally machined from aluminum alloy substrate. Sealed cavity flow channels are milled inside, and sealing processes including vacuum brazing / friction stir welding (FSW) are applied to form a fully enclosed cooling cavity. The coolant circulates inside the cavity to rapidly remove heat generated by power batteries and on-board electronic controls, realizing constant temperature control of battery modules. It addresses pain points such as heat generation during fast charging, excessive temperature difference and thermal runaway risk. It serves as a core component in the thermal management system of new energy vehicles, developed by Sanhua Automotive Components.

 

Different from traditional tube-embedded water cooling plates, the integrated cavity structure features larger heat exchange area and lower thermal resistance with excellent surface temperature uniformity. Meanwhile, it possesses structural load-bearing capacity and can be directly used as the load-bearing base plate at the bottom of batteries, simplifying the PACK assembly structure.

 

 

✅ Integrated cavity flow channel with outstanding temperature uniformity Multi-channel parallel cavity flow channel optimized via internal simulation design. Large heat exchange area and uniform flow distribution effectively control cell temperature difference. It maintains stable temperature under fast-charging conditions, ensures battery consistency and extends battery cycle life (Sanhua Automotive Components).

 

✅ High-strength sealing, vibration and leakage resistance Solid-state sealing by vacuum brazing / FSW friction stir welding; welding strength close to base material. Helium leak detection is performed piece by piece before delivery. Resistant to vehicle bumping & vibration, high-low temperature cyclic impact with strong pressure bearing capacity. No liquid leakage during long-term service, meeting stringent automotive operating conditions.

 

✅ Lightweight aluminum alloy substrate High-quality 3003/6061 aluminum alloy with high thermal conductivity and light weight. Significantly lighter than steel structures to help improve vehicle driving range. Anti-corrosion and insulating surface treatment available for the plate, resisting corrosion from ethylene glycol coolant.

 

✅ Integrated structure to reduce assembly cost The base plate reserves counterbores, positioning posts and inlet/outlet connectors for module installation. It combines heat dissipation and mounting base in one piece, reducing matching sheet metal parts, simplifying battery pack structure and shortening assembly time on production lines.

 

✅ Custom development for full specifications Customization of outline, cavity flow channel path, inlet & outlet positions and thickness dimensions according to customers’ battery pack drawings and thermal load requirements. Rapid simulation solutions available, supporting prototype sampling and mass production from small to large batches, compliant with IATF16949 automotive quality standard.

 

 

🔹 NEV passenger vehicle power battery PACK, CTP integrated battery pack 🔹 Liquid cooling heat dissipation for power batteries of new energy commercial vehicles and heavy-duty trucks 🔹 High-power heat dissipation for on-board ECU, OBC and motor controllers 🔹 Thermal management of energy storage battery packs and battery swap modules

 

 

Equipped with in-house precision CNC workshop and vacuum brazing production lines, offering one-stop manufacturing from plate cutting, cavity milling, welding, surface treatment to air tightness inspection.

 

Thermal simulation in upfront design: flow field and temperature field simulation in early stage to optimize pressure drop and temperature uniformity and reduce later mold modification.

 

Automotive-grade full-process quality control. Each cooling plate undergoes pressure test + helium leak inspection. Full inspection on material, dimension and appearance ensures stable mass delivery.

 

Customer factory site visits are supported. DFM (Design for Manufacturability) analysis is available, with dedicated technical engineers to coordinate thermal management solutions.