Electric Drive System; Motor; Rechargeable Battery - Bosch KB060 KD Series Manual

3.3.10 Electric drive system

The pedelec has an electric drive system in
addition to a mechanical one.
3.3
4
5 6
Figure 40: Diagram of an electric drive system with
electric components
1 Front lamp
2 On-board computer
3.1 Integrated battery and/or
3.2 Frame battery and/or
3.3 Pannier rack battery
4 Rear light
5 Electric gear shift (alternative)
6

Motor

7 A charger which is designed for the battery.
3.3.10.1 Motor
As soon as the muscle power required for
pedalling passes a certain level, the motor is
activated gently and assists the pedalling motion.
The pre-set level of assistance determines the
motor output.
The motor switches off automatically as soon as
the rider no longer pedals, the temperature is
outside the permitted range, there is an overload
or the shut-off speed of 25 km/h has been
reached.
A push assist system can be activated. The speed
depends on the selected gear. The motor
continues to drive the pedelec as long as the rider
presses the push assist button on the handlebars.
The speed can be a maximum of 6 km/h in this
case. The electric drive system stops when the
push assist button is released.
MY22K01 - 32_1.0_26.08.2021
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3.2 3.1 2
1
The pedelec does not have a separate emergency
shut-off button. In the event of an emergency, the
motor can be stopped by removing the on-board
computer. The mechanical brakes are used as an
emergency stop system and bring the bicycle to a
halt quickly and safely in the event of an
emergency.

3.3.10.2 Rechargeable battery

BOSCH batteries are lithium ion batteries which
are developed and manufactured to the latest
technical standards. Each individual cell is
protected by a steel cup and encased in a plastic
battery housing. These batteries meet and exceed
applicable industrial safety standards. The battery
has an interior electronic protection circuit, which
is specifically designed for the charger and the
pedelec. The battery temperature is monitored at
all times. The battery is protected against deep
discharge, overcharging, overheating and short
circuit. In the event of a hazard, a protective circuit
switches the battery off automatically.
The battery has a high energy content when
charged. The code of practice for their safe
handling is found in Section 2 Safety and
Section 6.9 Rechargeable battery in the operating
instructions. If the electric drive system is not used
for 10 minutes and no button has been pressed on
the on-board computer or the control panel, the
electric drive system and the battery are
automatically switched off to save energy.
The type and duration of operating conditions
have a significant effect on the battery life. Just
like any other lithium-ion battery, the battery will
age naturally if it is not being used. The battery's
service life can be extended if the battery is well
maintained and stored at the correct temperature.
The charging capacity will decrease with age,
even if the battery is serviced properly. If the
operating time is severely shortened after
charging, this is a sign that battery has reached
the end of its useful life.
Description
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