And while it can be used for most connections, the same cannot be said while connecting batteries to your circuit. is it possible to use a standard 12V car battery instead of the 3S Lipo? As for using the welder, most of them allow you to do this by either pushing the welding head upwards or by using an included foot pedal for ease of use. You will have to release the button to charge the capacitor and press the button again to turn ON the relay2.

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>> as I described, kWeld does not need that, it produces optimal repeatability because of its energy metering approach. So for 6 that would be between 91 and 125uOhms but would be nice to know what number you use in the software. The 2S 20Ah Lithium-ion Pouch cell has degraded a bit and the welds are just too weak. Usually, battery spot welders offer a work cycle of about 20 pulses within a minute. This task asks for a pulsed laser welder. Imho I do not see the benefit of the solution compared to a Lipo or kCap unless you can get them at a bargain. This includes temperature ranges like 100 to 400 degree Celcius or 150 to 500 degree Celcius where a higher range is always considered to be better. ElectricalElectronicsEmbeddedPowerRoboticsARMIOT, Mini projectsMicrocontrollerArduinoSolarFree circuitsHome AutomationSeminar TopicsElectronicsQuestions, CapacitorsResistorsFiltersDiodesTransistorsAmplifiersIO DevicesThyristorsDC CircuitsNumber System, Welding Symbols | Basic and Supplementary Weld Symbols Types, 7 Best Miller Welders of 2022 Reviews & Buying Guide. But its impossible without a fully automatic or semi-automatic control system.

One of the most unique things about this battery spot welder is that it includes a total of three welding modes which include the push-up head, foot pedal, and even a mobile welding pen for high versatility. Say you use 5, capacity will be reduced to 600F and internal resistance will be increased to 1.45mOhm. So, If you touch the soldering iron for a long time, there are high chances of battery damage and moreover with the soldering, you will never get neat and clean connections, if you are not a pro. I simulated the circuit with LT-spice and a 1uH inductance and get a little bit of different values but the idea remains the same. My practical test results were different, which is why have set that limit. We will send a confirmation code to your mobile phone to verify that your contact details are correct. This YaeCCC 737G battery spot welder comes at the 3rd position of this article because it is the cheapest option present here that manages to offer an excellent value for money. 0.1V per 1000A seems low use of the dynamic range of the AD converter. To help you out in picking the right one, we have explained all the features and details of these various battery spot welders. welder 12v Enjoy Free Shipping Worldwide! This keeps pulse power constant, resulting in more repeatable results. When the push button is pressed, the relay1 is turned ON and the capacitor starts discharging as it uses its charge to power up the relay2. Dont buy from them. Make sure to share your thoughts in the comments section. How many welds can I expect @ 100J and the Turnigy Graphene Panther 6000mAh 3S 75C pack linked above? This includes things like spot welder, foot pedal, battery holder, welding needles, wrenches and screwdrivers, fuse tubes, and nickel platings. Before you go ahead and start using a battery spot welder, it is highly important to ensure that your welder is compatible with the batteries that you want to weld in a circuit. Using this push button we can turn ON and turn OFF the relay1. As you can see, the positive leg of the capacitor is connected with the common leg of relay1 and the other leg of the capacitor is connected with the Gnd of the 12v power supply. The Sunkko 709A battery spot welder offers multiple control options making it a highly versatile and customizable battery spot welder. You will also see this in action after I explain how this circuit actually works. Well I am trying to increase the weld current using capacitive discharge in a safe way for the kweld, meaning within SOA of the MOSFETs and within the tested max of inductive energy.

?Limited Time Sale Easy Return. But with a tremendous advantage that I can influence the initial current greatly by setting the charge voltage of the capacitors. (5) Expedited shipping can not be used for PO Box addresses, We support the following payment methods.Click for more information if you are confused about. I am using these homemade copper electrodes and I am still happy with the results, for professional welds you can order some good quality electrodes. The welds were not good at all. Yes, a 4S2P kCap would have cost an extra 40 (a bit less but close to) in purchasing an extra 4 capacitors only, not including any revenue from my side. While this entry-level battery spot welder is highly powerful for all kinds of spot welding requirements, it, unfortunately, does not mention any current output rating. What I also do not understand is why kweld cannot benefit from the fact that when a capacitor is discharged also avalanche energy is reduced. Prices include VAT and duties(if applicable). Thank you very much!!! I have a basic set-up working that does not do metering, but it would be nice to have simple and direct way of measuring the current. Is there a reason why my question is censored? Now, this setup is the most basic setup and most of the videos and articles explain this much of the work, which is not sufficient.

But double-pulse operation wouldnt be possible (unless using a second capacitor bank for that) >> well I see a number of options here one of them is if the pulse is very short the conductor is not completely charged. Keep all leads as short as possible (check the kWeld operating manual for that), and start with low voltage while attempting to calibrate. I will be ordering some new cables and electrodes very soon. I have the impression it should be possible but I didnt read anything on that, so I prefer to ask. But I admit your mosfets and driver must be able to do this. And because this is a premium offering from Sunkko, it also includes their standard 1-year warranty. 2000A is the max of this arrangement, unless you further reduce inductance by shortening leads. ZHUVATAR store spot welder is suitable for people who want a budget-friendly and still need a model with decent performance.

Thanks. While the other leg of the relay coil is connected with the 12 volts through a push button. But at some point, the MOSFETs will start giving up due to unequal current sharing and electro migration. [-'5k8*#wX5d--U`tY%eb\7 #\'u\C-.N`!w2>J1bzZ1c@:Y~&adXmNFN}{Z3-@g 0>kX`=6BZz*D;a {A,HH| QV?jioFdW;mgdwp_vv=P%B|I5wS+0&zrfntL1#3?Wf3]hNdac p&P5Co: 0,"p8Kf8]\Lkdm Ke;k,4F%54KZjzX5/3"T?a,|/`Vwql#Rox ZC;pl View cart for details. With higher temperatures, you can easily work with most batteries and solder metals. This unit supports a welding thickness range of 0.05 mm to 0.2 mm along with a welding current output of 50A to 800A making it the perfect option for heavy-duty usage, especially at the given price tag. Are you willing to share what resistance value you are using for the calculation? Total delivery time is broken down into processing time and shipping time. I would like to avoid supporting development of a competitor device, just in case. This transformer is designed for 220Vac and 50Hz. >> thats possible, please contact me via email and I can create a custom firmware for you. I practically tested 100uF capacitor and it worked for me. these cost approximately as much as 2x kCap, therefore I dont see a benefit. kWeld does the rest then with its energy metering. You can use any tools, but you have to be careful, you cant cut the primary winding. The used value varies, because we have a number of MOSFET options that we use depending on availability. Ltd. is becoming a reference point as it is the trend of the day because very few companies provide end-to-end solutions like us. For the practical demonstration watch video tutorial given at the end of this article. 2018 keenlab UG (haftungsbeschrnkt).

2S isnt enough voltage for the welder. With a 1.0mR resistance it would be slightly better then your ultracapacitor module (1.1mR for a 2P) while having all the advantages of a normal battery bank. Ive heard a lot about it (all good things!). LTO batteries are the future of energy storage and will become a lot cheaper (and better!) Your calculations look reasonable, with one small exception. also which min specs? And while most of them are quite easy to do, the same cannot be said about welding electrical connections with batteries. But, before I am going to connect the electrodes, first I am going to check this setup. So when I change capacitor voltage and pulse time I can do an amazing good forecast of my scope image, way better than just a ball park. Took 3 weeks for item to be shipped. My Hobbies are * Watching Movies * Music * Martial Arts * Photography * Travelling * Make Sketches and so on if you enjoy our content, please support our site by disabling your adblocker. Although, you do get a 1-year warranty with this spot welder which is always great to have. My 2nd test was successful as I fixed all the issues, I designed my own Semi-automatic transformer control circuit, to control the ON/OFF and time duration. Could you tell me why you choose a 3S configuration for the ultracapacitors? You have been completed the task of "Browse and add 3 products to cart".Please return to VIP center to receive your points. I want to turn ON the transformer when I have pressed both the electrodes. One easy way to check this is to look at the welding current offered by your machine. When I press the first electrode the nickel strip makes a strong contact with the battery surface, now this is the perfect moment and when I press the 2nd electrode, I dont get enough time to press the nickel strip against the battery surface. Click to share on Twitter (Opens in new window), Click to share on Facebook (Opens in new window), Click to share on WhatsApp (Opens in new window), Click to share on Telegram (Opens in new window), Click to share on Tumblr (Opens in new window), Click to share on LinkedIn (Opens in new window), Click to share on Reddit (Opens in new window), Click to share on Pinterest (Opens in new window), Click to share on Pocket (Opens in new window), Click to share on Skype (Opens in new window). This is relay2 the one on left side which connects and disconnects the 220Vac. However, the unit would need to know the capacitance, and would also need to control the charge voltage. The MOSFETs cannt handle much more current either, tested max is 2800A but they only survive a few thousand shots at this level. Seller assumes all responsibility for this listing. Over 35 years of innovation and development focused on a truly unified design environment makes it the most widely used PCB design solution. If the weld quality is not sufficiently stable a dual pulse could be used. All Rights Reserved. Next, I started off to remove the Secondary winding, seriously this was the only difficult job, as I had to be very careful. This spot welder is suitable for small welding works and daily spot welding at home. Is the source code available That system can even hit the 2000A current limit during calibration and may require sigthly reducing their voltage for that step. This isnt the same as controlling/influencing the current like you asked. Great Product! Hi Frank, They also have their significant features and details explained above along with a complete buying guide. You cant use them at 4166A however (2000A max for kWeld), and heres where the problems start: you would need to lower the voltage in order to stay below 2000A, and then they might not anymore store enough enery for more intense welding pulses. But still I dont see a need to go to dual pulse. A 5S LTO battery would have a series resistance of 5milliOhms or lower with a maximum voltage of 14.5V. All welding machines also have a rating known as work cycle which tells you about the time for which they can work at a given time. It is possible to power kWeld with two serial Maxwell 3000F 2.7V ? @stefan-3702 (max reply level reached here): I had misread, thought that you were setting up a spice model for the kWeld power switch (as we last talked about that). >> Im afraid but kWeld cant handle that. You can start with a 50uF capacitor; keep increasing the value until you get the desired output. This device uses a contact resistance between spot welder and substrate contact point which bond the points perfectly. Use some with at least 5kW pulse ratings.

Min recommended welding current is 1200A, max is 2000A (only possible when not extending the battery leads), and the battery ESR and voltage are your factors to work with. Also note that the absolute max current is 1900A. Comprehensivequalitycontrol andaffordableprices, Fast and convenient door to door delivery, More than 40 different secure payment methods. If they get too hot, they may stop working because of which you have to use special tools for welding them. As a result, almost all battery spot welders support welding these batteries along with a few others. Sunkkos 788H battery spot welder comes at the 2nd position of this listicle as this welder offers similar results to a standard battery spot welder. We have been able to survive in the market for the last 12 years as we have always strived to maintain and improve the technology by which we are identified by our customers. Hence, it is quite important to check the control options offered by a given battery spot welder. I hope that a weld current of 2kA will do the job. Gave me an excuse that they had just come back from a holiday.

YaeCCC is another comparatively smaller brand of welding machines that you can consider if you are on a budget but still want something that offers standard performance numbers. Your email address will not be published. Just send me an email, and I can answer your questions (also much quicker). >> Thanks alot for that, I will. When combined with its welding current output of 50A to 800A, you can expect this battery spot welder to be the perfect option even for industrial usage. If you compare the specs with this concept you can surpass a Sunstone CD600DP with kweld. It is possible thanks to the performance numbers of this spot welder which has a welding thickness rating of 0.05 mm to 0.2 mm. Zentek Electronics & Communications Pvt. For the perfect weld you will need to press both the electrodes so that there is a strong contact between the welding surfaces. Your email address will not be published. Currently, I am running my own YouTube channel "Electronic Clinic", and managing this Website. Although Aluminum capacitors are mostly resilient to inductive spiking I am not sure about these caps. Sunkko also makes higher-end battery spot welders that not only offer standard performance numbers but also additional features which you would expect at the given premium price tag.

And despite being a budget option, this YaeCC battery spot welder also includes a 1-year warranty for peace of mind. But you can use these steel bits for welding metal parts together. Route it your way through any angle, tune for delay, Push, Slide, and Walkaround faster than ever. I may make a commission if you buy the components through these links. For using this spot welder, you can either use its included foot pedal or rely on the push-up welding head as per your liking. Thats why our kCap works differently: due to its high capacitance it is only marginally discharged, and supplies near to constant current during the entire pulse. Since this spot welder is slightly less powerful than others, it offers a fairly compact and portable design which makes this spot welder highly versatile. >> Im afraid not. Your transformer should look something like this. Slow response from seller. This qualifies as a wholesale order,place an inquiry to receive our best price. (4 K)1ULp{3o{q11Va\a1D0 `mGp%S*r=,4He@X~Rgqq@*L|$uPq"l^a_ H-y{"aE,2,uz7H"cqRRye?:\ I6ZjO8I5j\T2U The solution for going-to-the-limits welding with kCap is to use two of them in parallel. Altium Designer enables engineers to effortlessly connect with every facet of the electronics design process. The 2000A limit is due to the need to dump all magnetically stored energy when interrupting the current. Our endeavor has been to provide cutting edge technology based solution to our customers. I am contemplating buying a new supply for my kWeld. What Holliday is 3 weeks? But why do you want to influence the current? >> Because putting more power in the weld enables to weld in situations where heat is conducted away fast, like with the famous ANR26650M1 cells. Microwave Oven transformer is the best choice for building a homemade spot welding machine. And since this is combined with a high welding current output of 50A to 800A, you can use this battery spot welder for highly detailed circuits with ease. The capacitor discharged energy is 0.5*3.9(14.4)^2=404 Joules of which goes 1/6 into the weld = 67 Joules. is it possible to mount a better flyback diode I have been doing Job in UAE as a site engineer in an Electrical Construction Company. Or is it possible to mount a better flyback diode to reduce the avalanche energy in the MOSFETs? Get a 10% discount for your first order! DIY Portable 12V Battery Energy Storage Spot Welding Machine PCB Circuit Board Welding Equipment Spot Welders Accessories Specifications. Are there possibilities to do e.g. As for its performance numbers, this spot welder also supports a welding thickness of 0.05 mm to 0.2 mm. Those of you who work on a lot of electrical circuits are also most likely soldering and welding a lot of connections together. {{$productInfo.reviewAmount.average}} out of 5. we depend on ad revenue to keep creating quality content for you to enjoy for free. Generally, this will be given as 50A to 800A which is much higher than what you will need in most cases for making spot weld connections for your electrical circuit batteries. I added a control circuit and then all the issues were just gone. If you are interested I can send you the status via a PM.

If you want to practically see everything then watch my video tutorial given below. The MOSFETs cant handle much more current either, tested max is 2800A but they only survive a few thousand shots at this level. >> depends on pulse length AUIRFS8409 datasheet states: Pulsed Drain Current per mosfet 1200A (pulse limited by junction temperature). 20-45ah Lead-acid battery with good performance and small internal resistance, 2. What I also do not understand is why kweld cannot benefit from the fact that when a capacitor is discharged also avalanche energy is reduced.

Anyways, somehow I removed the secondary winding. I did find your ESK8 post where you explained the 6.3V overhead and the 1.5V/milliOhm for the batteries. >> youd need multiple of them, distributed across the bus bars. Another though making the Kweld a real capacitive discharge welder: What would happen if I would connect 3 of these capacitors: https://eu.mouser.com/ProductDetail/KEMET/ALS70A135QT025?qs=AQlKX63v8Runp47hJ6lW9Q%3D%3D charged to 25V to kweld and set the energy to 67 Joules? For testing my spot welding machine, I am going to connect two lithium ion batteries in parallel. With Altium Designer you can create PCB designs with an intuitive and powerful interface that connects you to every aspect of the electronics design process. Whether you are using your battery spot welder for thinner connections or thicker ones, you would want it to make secure connections that stay intact for a long time. You are stressing the 2000A boundary but that is when the current is switched off or am I missing something here? >> Classical capacitor discharge welders suffer from the fact that the flowing current quickly drops while the capacitor is being discharged. Apart from spot welding, this battery spot welder also supports battery testing and battery charging making it a great all-in-one station for working on batteries. (1) The shipping time mentioned above refers to the estimated time of business days that the shipment will take after an order has been shipped.



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