How to improve the heat dissipation of high-voltage batteries

Does the second generation Civic have 20 cells? Is it covered with yellow film? I think that battery is good, the internal electrode is solid, and distilled water can be added to increase the capacity. The problem is how to seal the water injection hole. I welded it, which is obviously not a good solution. The lack of regenerative assistance may be due to insufficient battery capacity. If the voltage drops sharply somewhere in the battery, the assistance will weaken or stop. Its battery has a metal strip close to each cell, which may be used for heating or temperature sensing. I am not sure. There is no such metal strip on the third generation Civic. Can you check it when you maintain it next time?

 

The old battery pack I worked hard to build is not as good as your new battery pack. It is very good, right? I may also consider sodium-ion batteries in the future. Another option is lithium titanate, which is safer and has a longer cycle life, but the price is high.

 

Great, thank you

 

For sodium-ion batteries, improving their capacity utilization may be a problem, but fortunately it is already very surprising.

 

Sorry for not understanding the difference between the first generation Civic and the second generation Civic before. Yes, the second-generation Civic has more battery than the first-generation. Each unit voltage is 7.2v, so if there are 11 pairs of units, the rated voltage should be 7.2*2*11=158.4v, that is, two batteries form one unit. Unfortunately, I tried adding water to this battery with no success. Insight's battery seems to be better, and the capacity without adding water is also good. It may be relatively new. Many people here think that the battery is of good quality, so much so that some people put it in prius.


My honda battery has no leakage. Even though the capacity has been reduced a lot, I don’t know why it lost capacity. I successfully added water to the yellow battery of the first generation Civic, and it did not lose traces of electrolyte. It is a problem to seal the water filling hole after adding water. I use The unreliable soldering method has been replaced. After adding water, the capacity is greatly increased, the internal resistance is reduced, and the durability is unknown. It has been replaced by a new owner.

 

This method may be able to test the capacity status of the high-voltage battery, what is the set temperature of your air conditioner, the set wind speed and outside temperature, is the vehicle in the sun or indoors without sunlight, and are you the only one in the car?

 

I tried it. The outdoor temperature was 31 degrees Celsius, under the sun, the air conditioner was set to 24 degrees, the wind speed was 4, there was no one in the car, the engine ran for 2 and a half minutes before stopping, and the air conditioner could run for about 12 minutes.
The car is running very well now, fuel consumption has been reduced a bit, the maximum is no more than 80km/H, mostly around 70km/h, 24km/L, the battery temperature is generally 36 degrees Celsius, the maximum is no more than 37 degrees. I haven't tried a single trip of more than 100 kilometers, and the temperature may be higher by then.