5 Series E60 525d (M57TU) SAL
09/2005, MPM function is integrated into the body-gateway module (KGM)
Advantages for the power supply are:
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Precise identification of the battery charge state (SoC: "State of Charge") and battery condition (SoH: "State of
Health") by the power management.
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IBS designed for use with different assembly groups.
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Reduced off-load current: the consumers on terminal 30g are switched off in a defined manner by the
terminal 30g relay.
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A defined connection between the aluminium front end and the steel bodywork with the GRAV earth point in the
engine compartment.
The GRAV earth point improves the vehicle's electromagnetic compatibility (EMC).
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Greater headroom in the rear seat area. The routing of the battery cables in the outer area allows the seats and
carpets in the rear of the vehicle to be installed with reduced height.
Brief description of components
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IBS: Intelligent battery sensor
The IBS is a mechatronic, intelligent battery sensor with its own microcontroller.
The IBS continuously monitors the battery's:
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terminal voltage
•
charge current
•
discharge current
•
Acid temperature
[more ...]
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MPM: Micro-power module
As from 09/2005, MPM function is integrated into the body-gateway module (KGM)
When the vehicle is at rest, the MPM switches individual consumers off, if:
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off-load current is high when the charge state is critical
•
undervoltage occurs
•
too many "wake-up" circuits are activated in the K-CAN
•
the vehicle fails to go into sleep mode
the micro-power module is connected to the K-CAN.
[more ...]
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Rear power distributor with terminal 30g relay
The rear power distributor is installed on the right-hand side of the luggage compartment. The rear power
distributor is connected to the positive terminal of the battery, the front power distributor and the external-start
support point. The micro-power module (MPM) is supplied with power from the rear power distributor.
[more ...]
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Terminal 30g relay
The terminal 30g relay is actuated by the Car Access System (CAS) and prevents increased off-load current by
switching off individual consumers.
[more ...]
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Power distributor, front
The front power distributor is connected to the rear power distributor. The CAS, the starter motor and the KGM
are connected to the front power distributor. The body gateway module (KGM) is supplied with power from the
front power distributor.
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Battery cables in outer floor area
SBT Power supply E60, E61, E63, E64
BMW AG - TIS
12.02.2013 16:01
Issue status (12/2007) Valid only until next DVD is issued
Copyright
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