BMW I01, Информация о продукте

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I01�High-voltage�Components
5.�High-voltage�Battery�Unit
76
Index Explanation
1 Electric�heating�(EH)
2 High-voltage�battery�unit
3 Battery�management�electronics�(SME)
4 Electrical�machine
5 Range�Extender�Electrical�Machine�Electronics�(REME)
6 Convenience�charging�electronics�(KLE)
7 Charging�socket�at�the�vehicle
8 Electrical�machine�electronics�(EME)
9 EKK
5.2.�External�features
5.2.1.�Mechanical�interfaces
The�housing�of�the�high-voltage�battery�unit�is�connected�mechanically�to�the�Drive�module�of�the
I01�using�a�total�of�26�screws.�This�way�the�weight�and�the�acceleration�forces�occurring�during�the
journey�are�supported�at�the�body.�The�mounting�bolts�are�accessible�directly�from�below,�without
having�to�first�disassemble�the�underbody�paneling�.�For�the�removal�of�the�high-voltage�battery
unit�firstly�all�preliminary�work�specified�in�the�repair�instructions�(diagnosis,�disconnecting�from�the
power�supply,�etc.)�has�to�be�performed.�Before�the�mounting�bolts�are�slackened�the�special�tool�for
lowering�(mobile�table�lift�MHT 1200)�must�be�positioned�below�the�high-voltage�battery�unit.
The�electrical�connection�is�established�between�the�housing�and�Drive�module�by�another�potential
compensation�screw.
The�low�resistance�connection�between�the�housing�of�the�high-voltage�battery�unit�and�ground�(=
Drive�module)�is�a�crucial�prerequisite�for�the�fault-free�function�of�the�automatic�isolation�monitoring.
This�is�why�it�is�important�to�ensure�the�correct�tightening�torque�is�applied�for�this�potential
compensation�screw.
It�is�also�important�to�ensure�that�neither�the�housing�of�the�high-voltage�battery�unit�nor�the�Drive
module�at�the�respective�bore�holes�is�painted,�corroded�or�dirty.�The�bare�metal�must�be�exposed�if
necessary�before�the�potential�compensation�screw�is�mounted.