CCP EV emergency brake on highway, almost accident, Guess the brand
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 May 5 2025, 07:20 PM
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#1
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Junior Member
863 posts Joined: Apr 2019 
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QUOTE(Boy96 @ May 5 2025, 07:18 PM) Everything. The main battery only powers the drivetrain to move the car. isnt it simpler just to use a transformer? like on normal ICE car even with a dead battery once the engine starts the alternator can power everything.All small car accessories no matter byd or tesla relies on the 12v  anakkk liked this post
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May 5 2025, 07:24 PM
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#2
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863 posts Joined: Apr 2019
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QUOTE(ycs @ May 5 2025, 07:22 PM) how is it charged? alternator? car got DC DC converter. just wondering why if got this they still use 12 V battery. |
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May 5 2025, 07:50 PM
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#3
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863 posts Joined: Apr 2019
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QUOTE(brkli @ May 5 2025, 07:35 PM) actually, from engineering POV, still make sense to have this separate 12V battery for things like open/close door, e-brake, light and etc. that is provided it is working alongside a step down (to 12V) main EV battery. reason being, if one of the battery got damage, those critical component of the car (like e-brake, hazard light, ecu stuff) can still function. Electric E brake should be banned. Cable brake provided the best redundancy.This post has been edited by diffyhelman2: May 5 2025, 07:51 PM solarmystic liked this post
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