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Power battery is used in new energy vehicles to provide power for the battery, power battery for the general battery for higher technical requirements, higher requirements on the sustainability of the battery, the current domestic power battery manufacturers everywhere, appeared on the surface of comprehensive development, a good scene.Power battery pack liquid cooling heatsink experts believe that the power battery pack industry will be from everywhere to the polarization of the situation into a period of time, power battery enterprise polarization is significant, bibcock with bibcock pattern is basically determined.
Throughout the development of power batteries in China, the battery capacity is expanding rapidly, which leads to the continuous oversupply of lithium batteries in China.From the perspective of quality, there is a lot of low-quality production capacity, but there is still a lack of high-quality production capacity. The concentration degree of power battery industry will be further improved, and it will focus on high-quality and high-level enterprises. The supporting manufacturers of popular models are mainly CATL, byd, guoxuan, lishen, fu neng and other leading enterprises of first and second-line power battery.
Looking into the future, the market will maintain structural excess for a long time, leading enterprises scale effect and technological breakthroughs will achieve a steady decline in costs, profit margins will have a good performance, and medium and low-end battery companies are facing greater shuffling pressure. How to survive in the competition has become a power battery enterprises must think about the problem.
The process technology is very important for the power battery, the power battery preparation link will develop to scale, intelligence, improve product consistency and yield, which is a key to improve the quality. Whether the mass production of power batteries and the transformation and upgrading of intelligent manufacturing can be seen as a window of quality breakthrough.
Power battery enterprises with better technology and technology will be targeted by important international and domestic car enterprises, especially leading enterprises, have basically met the conditions for mass production. Large-scale intelligent production equipment can through digital means, the introduction of big data analysis and the principle and method of artificial intelligence, improving the quality of products at the same time realize the capacity of statistics and product basic diagnostic and traceability, finally realizes the comprehensive monitoring of battery production process, effectively solve the consistency problem of poor and low yield of battery. Power battery package liquid cooling heatsink experts think that this needs to spend a lot of money on technical equipment update and continuous improvement on the process, which is also very test power battery enterprise strength.
Globally, power battery production is mainly concentrated in China, Japan and South Korea, with Japan and South Korea leading the technology for the time being. Chinese enterprises are expected to catch up in the future.Industry giants mainly include South Korea's samsung, LG chemical, Japan's panasonic, ASEC, SONY and China's byd, CATL and so on.From 2016 to 2017, domestic battery manufacturers are in the trend of expanding production across the board. By 2020, the effective production capacity in China will be dominated by three yuan, and the top five power battery companies will occupy more than 80% of the market share.
Although Japan and South Korea power battery enterprises in the technology ahead of China, but Chinese enterprises catch up with the rapid technology and cost advantage highlighted, the current four raw materials have been all independent, the highest barrier of the positive pole, diaphragm has begun to export, lithium key equipment independent, leading intelligent has begun to export. CATL has entered the supply chain of first-class car companies such as BMW. It is foreseeable that there will be 2-3 world-leading power battery brands in China, which will seize the global market share. Experts of power battery package liquid cooling heatsink believe that, especially in the field of high-end power battery, the cost advantage of Chinese enterprises will be further highlighted.
Aluminum is a material with good thermal conductivity, so mainly used for heat sink production, aluminum material heat sink we commonly known as aluminum heat sink, all aluminium profile here is not to point to aluminium only, still included aluminium alloy product. Aluminum is soft in texture and has poor corrosion resistance, so the aluminum heat sink will need some necessary surface finish, anodization is a universal surface finish.
Anodization usually refers to sulfuric acid anodizing, which is the process of forming an oxidation film on aluminum products (anode) under the action of the applied current under the corresponding electrolyte and specific process conditions. This layer oxide film improves the surface hardness and abrasion resistance of aluminum alloy, so as to extend the application range and extend the service life of aluminum heat sink.
In addition, aluminum heat sink through anodized, color will become black, so anodizing is also called black anode, or black oxidation. Anodized aluminum heat sink can also increase the appearance of the product, many electronic products base and housing are black, heat sink is black can form unified tonal, increase beautiful degree. There are customers of the water cooling plates heat sink will also be anodizing surface finish, especially for laser and other optical instruments on the water cooling plate.
Every computer, from the smallest of home theater PCs to the most hulking of gargantuan gaming rigs, generates heat during operation—heat that can kill your PC’s precious internals if you’re not careful.
While you don’t have anything to worry about if you bought your computer from a big-box retailer or straight from a manufacturer like HP, you’ll be faced with a potentially crucial decision if you’re building (or custom-buying) a fire-breathing, benchmark-eating computer: Should you chill your PC with a traditional air cooling solution or a pricier, yet more efficient liquid-cooling system? That question has many aspects to consider before you can answer it.
The secret to harnessing the cooling power of air lies in fans—lots of fans. Your typical air-cooled PC is packed with case fans, graphics card fans, and a CPU fan or two—positioned atop a big metal heat sink—to keep your expensive components nice and frosty.
A water-cooling system, on the other hand, employs a series of coolant-filled tubes, a radiator, water blocks (the equivalent of heat sinks), and a couple of other components to keep your PC feeling refreshed. You’ll even need a few fans to push around all the water! Our guide to setting up a liquid-cooled PC explains a basic (ha!) system in exacting detail.
Got it? Good. Defining air cooling and liquid cooling is the easy part. The trickier bit is making the decision to use one or the other.
One of the great joys of using fans to cool your system is that, in a lot of circumstances, you really don’t have to do anything to create a decent cooling setup. If your system’s chassis is of the non-bargain-bin variety, odds are high that its manufacturer has already installed exactly what you need—namely, an intake fan in the front that pushes outside air over your hard drives and an exhaust fan that shoots hot air flying out of the rear of the chassis.
Graphics cards and computer processors pretty much always ship with powerful stock fans—you know, the ones that sound like a plane taking off when they roar into action. Those, combined with case fans, make up the Holy Trifecta of air cooling within a typical desktop PC.
Let’s start with the pleasant bits. One of the key benefits of a strong liquid cooling setup is that it allows you to cool specific system components to a greater degree than if were you to use fans—not the most applicable setup for someone running a typical stock-clock processor, but one that’s definitely of interest to anyone looking to overclock their chips a bit (or a ton).
Even if you don’t tax your rig enough to need a bigger cooling boost, a cheap self-contained water cooling loop—more on those later—can help lower your PC’s sound output. Water cooling is much quieter than stuffing your case full of fans.
There’s also the issue of space. A huge heat-sink/fan combination might perform well enough, but the best CPU coolers eat up a ton of real estate inside your case. Liquid cooling requires much less space, and it looks a lot niftier to boot. You can’t discount the cool factor of a case full of colorful, liquid-filled tubes!
So, which is better? Air cooling or water cooling? The answer depends on your particular usage needs.
One size does not fit all when it comes to case cooling, but most people can get by with fans alone. It’s easy, and it’s cheap. If, on the other hand, you’re an enthusiast who needs the best cooling possible for your flaming CPU and a gaggle of graphics cards, a DIY water-cooling setup is in your future. Finally, try a sealed liquid cooler if you’re considering liquid cooling either to keep your overclocked processor chilled or simply to benefit from reduced system noise.
Which is a better heatsink copper or aluminum? It's a complex question, with many factors. Let's look at some physical properties:
· thermal conductivity (Wm⋅KWm⋅K)
· volumetric heat capacity (Jcm3⋅KJcm3⋅K)
· density (gcm3gcm3)
· anodic index (VV)
· copper: 400
· aluminium: 235
· copper: 3.45
· aluminium: 2.42
· copper: 8.96
· aluminium: 2.7
· copper: -0.35
· aluminium: -0.95
What do these properties mean? For all the comparisons that follow, consider two materials of identical geometry.
Copper's higher thermal conductivity means the temperature across the heatsink will be more uniform. This can be advantageous since the extremities of the heatsink will be warmer (and thus more effectively radiating), and the hot spot attached to the thermal load will be cooler.
Copper's higher volumetric heat capacity means it will take a larger quantity of energy to raise the heat sink's temperature. This means copper is able to "smooth out" the thermal load more effectively. That might mean brief periods of thermal load result in a lower peak temperature.
Copper's higher density makes it heavier, obviously.
The differing anodic index of the materials might make one material more favorable if galvanic corrosion is a concern. Which is more favorable will depend on what other metals are in contact with the heat sink.
Based on these physical properties, copper would seem to have superior thermal performance in every case. But how does this translate to real performance? We must take into account not only the heatsink material, but how this material interacts with the ambient environment. The interface between the heatsink and its surroundings (air, usually) is very significant. Furthermore, the particular geometry of the heatsink is significant as well. We must consider all these things.
A study by Michael Haskell, Comparing the Impact of Different Heat Sink Materials on Cooling Performance performed some empirical and computational tests on aluminium, copper, and graphite foam heatsinks of identical geometry. I can grossly simplify the findings: (and I'll ignore the graphite foam heatsink)
For the particular geometry tested, aluminium and copper had very similar performance, with copper being just a little bit better. To give you an idea, at a 1.5 m/s airflow, copper's thermal resistance from the heater to the air was 1.637 K/W, while aluminium was 1.677. These numbers are so close it would be difficult to justify the additional cost and weight of copper.
As the heatsink becomes large compared to the thing being cooled, copper gains an edge over aluminium due to its higher thermal conductivity. This is because the copper is able to maintain a more uniform heat distribution, drawing the heat out to the extremities more effectively, and more effectively utilizing the entire radiating area. The same study did a computational study for a large CPU cooler and calculated thermal resistances of 0.57 K/W for copper and 0.69 K/W for aluminium.
Extruded aluminum heatsinks are the most common heat sinks used for thermal management today. They are manufactured by pushing hot aluminum billets through a steel mold to produce the final shape. The most common aluminum alloy is 6063-T5, but other 6XXX aluminum alloys can also be examined as needed. When the material is extruded, the initial sticks are 30-40 feet and length and are very soft. The aluminum material is stretched by grabbing both ends to produce a straight stick. After the stretching, the aluminum material can be either air or over aged depending upon the required final hardness of the material. After aging process, the extruded aluminum enclosure is cut to the final length and any final fabrication (holes, pockets, or other secondary machining) can be done. Extruded aluminum heatsink is usually supplied with a “finish”, such as anodizing, which can enhance its thermal performance. The heat sink can also be supplied with a chromate finish, which provides some corrosion protection, or can be used as a primer before a final paint or powder coating is applied. While each extruded shape is unique to the requirements that it was designed for, extruded aluminum heatsinks are the most cost-effective cooling solution. Each shape is engineered to achieve the optimal thermal and structural performance. Lori is the good aluminum heat sink suppliers in china,our lori partners with a large list of vendors which insures that you have the best thermal solution based on your system structure and thermal requirements.