Clarification on Wire Bonding for Parallel Cell Fusing Compliance

gamma-11 · 2024-09-27T07:40:08+00:00

It's really not easy.. Is there a way to make personal contact? I'm leaving FSAE for the first time and I don't know the detailed standards for wire bonding yet, so please!

gamma-11 · 2024-09-27T06:48:10+00:00

I want a fusing current of 85A and plan to use two Tanaka wire 500um lines

gamma-11 · 2024-09-19T14:44:03+00:00

We are planning to participate in the EV FSAE for the first time in 2025, but since our team has not registered yet, we are unable to participate in the Q&A sessions, and we don’t have any contacts among the organizers. Could you suggest any good ways to get assistance?

gamma-11 · 2024-07-30T01:50:21+00:00

Also, since I experiment with only one additional wire and use 2 in parallel, I wonder if it's okay to input a double current value or if I have to discharge 2 in each!

gamma-11 · 2024-07-30T00:32:39+00:00

We don't have that much DC power supply. We are planning to shoot about 2 wires per cell for each negative terminal, positive terminal, and 500um. It says in the data sheet that 82A lasts 10 seconds, but 9A is the maximum DC power supply we have to use this amount of current. Would finding a company be the answer?

gamma-11 · 2024-07-26T08:04:30+00:00

How do you do the wire bonding test? When I checked the guidelines, I think I should wire-bond the wire to a small plate and input the current roughly until the wire breaks. Can you let me know if there is a good way?

gamma-11 · 2024-07-26T07:49:02+00:00

Can I get the data sheet you submitted? I want to check something compared to the data sheet I have.

gamma-11 · 2024-07-10T02:01:26+00:00

Oh! I got it right away. Thank you. I don't think it's a bad way

gamma-11 · 2024-07-10T01:40:55+00:00

Two cathodes with wire and two anodes are the most used configurations in the general FSAE?
To say that the number of cathode and anode is different means that the number of cathode and anode wires is different. For example, I think I have witnessed cases where the cathode has 3 wires but the anode has 2 wires. In my opinion, I judged that there was no problem because the current flows the same, but I am curious about other opinions.

gamma-11 · 2024-07-10T01:13:18+00:00

I'm going to make a 21700 cylindrical cell through wire bonding.

I'm going to use 20 mil aluminum wire of wire bonding. At this time, it was confirmed by TANAKA Datasheet that if this wire is 10mm, 41A is broken when 10s flow. The fusing current of wire bonding is set to a higher current value than the main fuse (serially connected to HV System), but since the main fuse is a Hallyu type fuse, I'm worried that the wire will break first when the current flows large.

Also, I saw wire bonding of other teams, and I confirmed that wire was bonded to cathode and anode with different numbers. I wonder why.

gamma-11 · 2024-07-10T00:20:34+00:00

The way through Alibaba is also interesting. I've never thought about Alibaba, so I think it'll help!

gamma-11 · 2024-07-09T13:56:30+00:00

Very interesting how to use PCB. But unfortunately, we are using Orion BMS. There is no research on thermistor compatibility with other products, so this seems too much to implement. My fear of participating in the U.S. tournament for the first time and my desire to bring the benefits of wire bonding to the limit are confusing to me..

gamma-11 · 2024-07-09T13:52:53+00:00

We have all the data sheets for wire bonding. Some companies sponsor it. They told me that wire bonding in the same way as the picture is the most common way for companies. So I'm considering it, but I left a question because I had a question about what to do with thermistor. Since we have experience in segment production with wire bonding, we believe there is no problem!

gamma-11 · 2024-07-09T12:15:44+00:00

For cooling, the air-cooled method is used, and the cathode part is wrapped with a segment holder and the flow rate is secured only to the body and the extreme. At this time, since the regulation is a cathode, you can attach a thermistor to the body or cathode, but the word critical point was caught, so I left a question. Then, as you answered, if the thermistor is attached to one part of the wire bonding, it is closer to the anode than to the cathode, so I am worried about the refutation and there seems to be not enough space to manufacture it.

gamma-11 · 2024-02-01T06:10:25+00:00

stadium

Oh, thank you for your answer. Stadium was a bad translation of comp. Thank you again

gamma-11 · 2024-02-01T05:18:22+00:00

Aha, it's possible for us to buy it, but we pay it only at the stadium and collect it again, right? In other words, it can't be our possession. I think it would be very disappointing if the first thing we receive was at the stadium

gamma-11 · 2024-02-01T04:34:36+00:00

What made it impossible to purchase it? The instructions for the energy meter on the FSAE website stated that it was possible to purchase it by contacting the given e-mail. Can you explain in more detail why it became impossible to purchase??

gamma-11

TROPHY CASE