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Brazed Fin Cold Plate Heat Sink for Battery Pack

Designed specifically for thermal management in new energy vehicle battery packs during fast charging, this cold plate utilizes CAB brazing technology and non-hygroscopic aluminum cold plate technology to address overheating issues caused by high-current fast charging, ensuring battery performance stability and operational safety.

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1. Thermal Performance Advantages

Instant Fast-Charging Heat Dissipation
During fast charging, a surge in current causes a rapid rise in battery temperature. The high-density brazed fin structure of this cold plate increases contact area by 30%, accelerating heat transfer to the coolant and preventing heat accumulation.
Efficient Heat Conduction Design

Brazed fins are seamlessly integrated with the cold plate base, ensuring zero-gap heat conduction paths with thermal resistance ≤0.05°C/W.
Compatible with both water-cooling and oil-cooling systems, adaptable to mainstream cooling solutions.

2. Core Technology (CAB Brazing Process)

Technical Features	Parameters & Advantages
Brazing Material	Potassium fluoroaluminate flux (KAlF₄ + K₂AlF₅·H₂O), melting point 565-572°C (below filler metal melting point of 577°C)
Particle Adaptability	- Wet application: Particle size X50=2-6µm (excellent slurry stability) - Dry application: Particle size X50=3.5-25µm (superior fluidization and adhesion)
Environmental Resistance	- Non-hygroscopic: Does not absorb moisture, indefinite shelf life - Zero corrosion on aluminum: Solubility 0.15-0.45%, no chemical reaction risk
Process Reliability	No residual oxide layer post-brazing, joint strength ≥90% of base material, compliant with IP67 waterproofing and vibration tests.

3. Customer Value & Applications

Extended Battery Life: Precise temperature control (±1°C) reduces battery charge-discharge losses, extending cycle life by 20%+.
Explosion-Proof Safety Design: Suppresses thermal runaway propagation, compliant with UN38.3/GB38031 safety standards.
Lightweight Integration: Aluminum alloy material, customizable thickness below 8mm, suitable for compact battery packs.

Typical Applications:

Pure electric/hybrid vehicle battery modules
Energy storage system (ESS) liquid cooling units
Ultra-fast charging station battery thermal management modules

4. Technical Specifications Overview

Item	Specifications
Material	6063 Aluminum alloy base + Brazed aluminum fins
Operating Temperature	-40°C ~ +150°C
Pressure Resistance	≥3.5MPa (static) / 2.0MPa (dynamic)
Surface Treatment	Anodizing/Conductive coating (optional)

Why Choose Us?

✅ Customized Design: Supports non-standard flow channels and multi-interface configurations for quick battery pack integration.
✅ Full-Process Quality Control: 100% helium leak testing + infrared thermal imaging, yield rate >99.8%.
✅ Fast Delivery: 15-day prototyping cycle, supports small-batch trial production.

Get Your Custom Thermal Solution
Click to consult and provide your battery parameters and thermal requirements. Our engineers will deliver a tailored solution within 24 hours.