Fresh air to ... the battery ?
Looking under the hood of my Volvo V50, I noticed there's a small air duct in the hood's sound-proofing that force-feeds fresh air from behind the grill to the largely enclosed battery.
For me, it's the first time I've seen anything like this on any car. :confused: Why would Volvo do that ? If I block the grill, that'll also bock the air to the battery. What effects are to be expected ? |
It is there to keep the battery cooled. If it is mostly enclosed than most of the heat from charging or discharging is contained (not good) and can cause the battery to over heat. I would still let some air flow into that area (it will also help keep other under the hood electronics cool).
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Where it goes after that, I still have to find out, but by the looks of it, it's not going to other electronics. Probably just spills out at the rear / bottom of the battery. |
yes it likely just spills out into the engine compartment, but it is good to have some cooling in there. Under hood temps are a key factor in how long electric components last.
As for the battery enclosure, the designers must have decided that it needed shielding from the under hood temps, that's why they put it in an enclosure. Heat kills batteries (speeds up the chemical break down process) this is not a big deal with lead acid batteries but it still is a factor. Can you post some pictures of the current set up and of you planed mods (tape some cardboard up)? |
Move the battery to the back seat like I did. More room to work on engine. More weight out of the front allowing 155/80/r13 wheels. Also cooler battery.
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But the spare wheel well is empty now. Mmmmmmm :rolleyes: |
It's not for heat/cooling. Batteries emit gasses thus need to be vented.
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Cool battery makes better FE and longer battery life.
When battery get hot the voltage of the battery goes down and battery gets overcharged. (I might say that overcharging is just boiling water) Cool battery has higher voltage and alternator won't overcharge it. I haven't been any kind of Volvo fan but past year have been different. Volvo has done many basic and reasonable things for better FE and reliability and this is one more thing to list. |
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I've only used the preheating maybe 1 or 2 times. In winter it starts easily without using preheat, even though the car is not kept in a garage. Quote:
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But in an open engine compartment, battery ventilation surely would be better than in an enclosure ? |
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