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OTHER APPLICATIONS
ULTRASONIC FOOD CUTTING
 

In the early of 1970's, it has begun to introduce ultrasonic technology to food portioning. Today, it is capable to apply ultrasonic to cut cakes, pies, cheese, bread, and candy so on; the cut surface is fine and clean. While processing nuts or raisins with ultrasonic equipments, there is less damage caused then traditional cutting tools. Ultrasonic cutting is more suitable for crisp, creamy or soft foods. It has no deformation of products and makes extreme thin slices. Clean cutting is ensured and the phenomenon of attaching is almost negligible. Fast and clean cutting promotes higher capacity and shorter cleaning time.

While cutting foods, the ultrasonic cutting horn is oscillated in frequency of 20kHz or 35kHz and ensure food is not attached to the surface of cutting horn. The section of food is clean and layers kept clean. Recent studies have found that 35kHz cutting horn has the best performance of cutting hot and sticky foods; and no noise is occurred during processing.

The time spent on routine cleaning is shorten; about 70%~90% lesser than traditional cutting equipments. For customers with traditional cutting quipments, it only needs small scale alternation to introduce ultrasonic cutting equipments into present system.


Ultrasonic cutting is especially suitable for foods with below characteristics

    • soft; creamy; crisp; complex; fresh; frozen




 

 

ULTRASONIC APPLICATIONS IN RECHARGEABLE BATTERY MANUFACTURING
 

Steps for manufacturing the Nickel-Metal-Hydride (NiMH) battery

Removal of active material

The objective of this step is to remove the active material on the surface of the bubble nickel which can be achieved using an ultrasonic welder. For ultrasonic cleaning, ultrasonic output with high frequency and low amplitude of vibration should be used, in order to avoid any risk of damaging the property and tensile strength of the material itself. Furthermore, since in the welding process, the metal nickel plate welded to be rolled up, therefore, its strength should be robust enough, in order to avoid any affect of the battery quality due to the internal swelling and shrinkage during the battery charge and discharge.

A vacuum suction cleaner should be equipped to suck out the dusts during the ultrasonic cleaning process.


Tab welding

The objective of this step is to weld the nickel plate with the dust-free bubble nickel. A good welding effect and welding strength is required and the material may not be damaged, to avoid any damage of the bubble nickel during roll-up.

The welding horn for welding the nickel plate is made of special steel which is easy to warm-up during continuous welding process. Therefore, a cooling system is required.


Separator welding

To use an ultrasonic welder for cutting the PP or non-woven of the already packed and rolled-up bubble nickel.

Pack welding

Ultrasonic plastic ultrasonic welders are used to welding the battery shells/ covers.


 

Steps for manufacturing the Lithium-Ion battery

Tab (+)positive welding

To weld the positive electrode of the lithium-ion battery and weld two aluminum parts together


Tab (-)negative welding

To weld the negative electrode of the lithium-ion battery and weld copper and nickel parts together


Safety valve welding

To weld the aluminum and aluminum parts together


Pack welding

To use an plastic ultrasonic welder to pack welding the battery.



 

 

Ultrasonic welding application of Amorphous PV
 

Intro

 

         
            

  

Renewable Energy 


 

PV--An high growth industry


However, in view of the development tendency of future substitute energy resources, our demands for petroleum will be gradually decreased in approx. 4% very year, while our demands for solar energy resources will be gradually increased in approx. 50% ever year.

 


 

 
      

 

       

Awakens!!!

Here, we must pay more attention to the entire global petroleum market tendency. At present the world has the highest demand on petroleum consumption, but the solar energy is a new energy resource which is worthy for us to use it. Therefore, there will be a big increasing demand on solar energy resources in the years to come.

 

 

In 2010 the global output value of the solar energy and photocell products will be exceeded to US$ 70,000,000,000

According to the current analysis on solar energy markets, the global solar energy power generation output may reach to 2.3GW. It concentrates mainly in the European market, including Germany and Spain etc. countries, but in the American market, its main market is U.S.A. In the Asian markets, Japan is one of the most popular countries developing the solar energy, even South Korea, India and China have actively joined in these emerging energy industry. Thus we can foresee that there are already large demands on solar energies in the markets. In addition, according to the current market analysis made by Morgan Stanley, it is estimated that in 2010 the global output value of the solar energy and photocell products will be exceeded to US$ 70,000,000,000 which is worthy for us to pay a more closer attention to this fact.


Source:www.Ecotopia.com/ASES/Solar2006

  


Production of Amorphous PV

In the fields of manufacturing solar panels, it refers to a kind of semiconductor manufacture, including the coating, forming and cutting of PN semiconductor membranes. In order to induce the current generated by solar panels effectively, at the last stage of completing the solar modules it relies mainly on the ultrasonic welding of the electrodes.

 


Theory of Ultrasonic Welding
Ultrasonic metal welding is based esstinally on high-frequency mechanical to friction overlap the same or different metl materials and to press the welding horn with proper pressure down to the parts making friction on the metal surfaces for welding. No welding additive is required.

This is a special welder designed for welding the electrode of Amorphous PV, base on the ultrasonic metal welding principles, to generate high frequency vibration energy so as to weld the solar energy collection plates (glasses) coated with aluminum together with the aluminum foil. Because the welding method does not use any solder flux, therefore, the resistance of the welding area (joint) is very low, thus it will not generate heat during power loading and/or discharge, so that the service life of the end products can be extended remarkably.



      

Improved Welding Technology

According to our analysis on the traditional welding technologies, we find out some issues, including:

The welding width is not enough

The width of joint processed by former equipments is about 1-2mm. Not only the width of joint, there are also great possibilities to improve the quality of joints, including straightness and stability. For this issue, we develop a new mechanism to realize a wider welding. The width of joints can be 6~8mm.

It is impossible to use several welders at the same time to make series connections of the solar panels:

According to our past experiences, the main reason for being impossible to use several welders at the same time to make series connections of the solar panels is that the ultrasonic oscillation system is larger than the welding horn (sonotrode), as a result, there will be interference to the welding operation. Therefore, we are endeavoring to develop a welding machine with its welding horn larger than its vibration system.

The problem of uneven welding surface

In the past, a traditional ultrasonic welding equipment uses usually a smooth (non-knurling) welding horn (sonotrode) which might cause deflection phenomenon during the welding process. For this reason, we will use a knurled welding horn to increase the welding reliability.

Ultrasonic output is not stable

It has been found that the performance and stability of ultrasonic equipment will affect the efficiency and yield of the welding process. We have introduced ultrasonic equipment capable of digital adjustment, automatic tracking compensation and instant feedback information to improve this problem. We introduced the ultrasonic equipment capable of digital adjustment, in-time monitoring and auto tuning to improve this problem.

 



   


Patents

         

 

TAIWAN

No. M333977

JAPAN

No. 3139864

CHINA

No. 1116788

 

 

Total
3

STRONG ULTRASONIC MACHINERY CO., LTD.

No. 288-21, Xinshu Road,

Xinzhuang District,

New Taipei City 24262,

Taiwan.


 TEL: +886-2-2203-6999
 FAX: +886-2-2206-5588

 Email: strong66@seed.net.tw