Bosch e-GoKart PowerTrain Young Star Manual page 34

5 | Overall Integration Requirements of e-GoKart System Components into the Superior Vehicle Context
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# The Energy Storage ES 5-2.4 shall to be mounted with the designated T-nuts M6 (Bosch
Rexroth part no. 3 842 530 321) and associated springs (Bosch Rexroth part no. 3 842 516
685), which are fixed in the notches of the housing, suchlike at the vehicle frame or at a
fixed vehicle equipment, that the battery housing is mechanically free of load and mech-
anically stress-free in the vehicle! This means that no torque or bending moment is al-
lowed on battery housing with regard to fixation points.
Mounting in vehicle must allow compensation of the Energy Storage ES 5-2.4 housing tol-
erances according to offer drawing, e.g. by elongated holes or compensation elements. In
case of other type of fixation, prior approval of BOSCH MOTORSPORT is required.
# The minimum tightening torque required to guarantee reliability of the screw connec-
tion depends on the mounting location and is in the responsibility of the CUSTOMER. Re-
commended tightening torque for M6 screws is 9 Nm and for M8 screws 15 Nm. In case
of any deviation from the standard solution, prior approval of BOSCH MOTORSPORT is re-
quired.
# Do not connect the Energy Storages ES 5-2.4 electrically in series as potentially lethal DC
voltages may be present.
# In general, each Energy Storage ES 5-2.4 is to be installed so that sufficient airflow to
cool the components is provided. Sufficient airflow will increase the system performance
significantly.
# The Energy Storages ES 5-2.4 shall be mounted outside the passenger compartment.
# Environmental conditions shall be considered for vehicle integration position.
# In order to provide maximum possible protection against vehicle crash effects, the En-
ergy Storages ES 5-2.4 of the system should be mounted outside crash-zones of the
vehicle core.
# After a crash event the Energy Storages ES 5-2.4 shall not be operated until it is ensured
that no mechanical, electrical and thermal deformation of components occurred.
# It shall be ensured that no adjacent components may penetrate the Energy Storage ES
5-2.4 housing in a crash situation. The Energy Storage ES 5-2.4 specific stiffness character-
istic needs to be considered.
# Fixation of Energy Storage ES 5-2.4 in the vehicle shall be designed in a way that all En-
ergy Storages ES 5-2.4 are protected against effects of a vehicle crash.
# In order to drain gas in case of cell event, the CUSTOMER shall ensure an appropriate
exhaust channel to the Energy Storage ES 5-2.4 compartment.
# The installation space around the battery shall be homogeneously ventilated but closed
to direct head winds. Direct air flow can cause extremely inhomogeneous temperatures in
the battery which might cause safety and ageing issues.
# The mounting position of Energy Storages ES 5-2.4 shall be in a distance which is large
enough from a heat source to avoid any influence of heat transfer to the components.
# An installation position exposing the Energy Storages ES 5-2.4 to an environment tem-
perature of >50°C may have a negative influence on the lifetime of the Energy Storage ES
5-2.4.
# The Energy Storage ES 5-2.4 shall not be exposed permanently to an environment tem-
perature >80°C.
This should be considered in the design of the installation position of the Energy Storage
ES 5-2.4 in the vehicle.
# The Energy Storage ES 5-2.4 housing can be connected to the vehicle metal chassis
electrical insulated or electrical conducted.
e-GoKart_Powertrain__Young_Star__Manual Bosch Motorsport