Automotive Engineering - October 2022 - 12

TECHNOLOGY REPORT
tent software architecture reduce complexity
and ensure optimized communication
between components. This
modular approach allows OEMs to integrate
the ADM with their requirements.
The rolling-chassis prototype
was built as part of an engineering alliance
with Benteler, a chassis and body
systems Tier 1 supplier.
Bosch will begin producing MEMS sensors on 300-mm wafers by 2026 at Dresden.
Big boost in capacity
Perhaps it's not a surprise that although
Bosch needs new machinery to increase
its semiconductor production, the shortage
of semiconductors also is affecting
the supply of that machinery. " It's a huge
point - the drying out of the supply
chain and on the other hand, the huge
capacity need which was then also generated
by [COVID-19], " noted Patrick
Leinenbach, senior VP for Manufacturing
Semiconductor Supply Chain operations
for Bosch. " Now we are all looking first
to serve our customers, to ensure that
our customers are safe. Huge teams are
working on it for our company, to look
where to take the products. "
Although SiC chips have helped to
extend EV range, the material presents
its own challenges. " The raw material is
different. If you're looking for silicon, you
have to speak monolith, which is then
sliced down in wafers, " Leinenbach said.
" It's not working for silicon carbide. "
This limits the size of wafers that can
Bosch has been making
semiconductors for 50 years and
continues to expand its product range.
one for charging from a European standard
230-V domestic power socket and
the other equipped with a Type 2 connector
to charge from either a 7-kW AC wall
box domestic charger or 11-kW or 22-kW
three-phase charger.
Bosch has redesigned the cable so
that one cable serves all needs. This
has involved integrating the control
electronics to regulate the charging in
the Type 2 connector at the vehicle
end. At the other end, temperature
control and a residual-current device
are integrated in the connector. This
means that the control box usually integrated
in the 230-V domestic charg12
October 2022
ing cable can be eliminated, reducing
weight by around 40%.
By equipping the other end of the
cable with an interchangeable domestic
plug or Type 2 connector, the vehicle
can be charged from a domestic socket,
AC wallbox or AC three-phase supply.
The company also displayed its preintegrated
systems solutions in its advanced
driving module (ADM) rolling
chassis, designed as a platform for EV
development. Individual systems for
drive, steering, and braking are integrated
into a single harmonized and
flexible system.
Simplified interfaces and a consisbe
produced from the material. Bosch
currently can make 150-mm SiC wafers:
" You can buy 200-mm wafers at the
moment, but the quality is not so
good, " he stated. " Therefore, it will take
time also to adjust the processes to
make them better. "
Gallium nitride offers an alternative
material, particularly for power management
in charging systems. But as
Leinenbach explained, " Silicon carbide
gives us the possibility to go back to silicon
and then scale this up on 300-mm.
So, there are advantages on the electrical
coefficients and the things from silicon
carbide, in comparison to the gallium
nitride. But the gallium nitride can be
produced in 300-mm. So, it's let the market
decide what they want. "
John Kendall
AUTOMOTIVE ENGINEERING
BOTH IMAGES: BOSCH

Automotive Engineering - October 2022

Table of Contents for the Digital Edition of Automotive Engineering - October 2022

Automotive Engineering - October 2022 - Intro
Automotive Engineering - October 2022 - Sponsor1
Automotive Engineering - October 2022 - CVRA
Automotive Engineering - October 2022 - CVRB
Automotive Engineering - October 2022 - CVR1
Automotive Engineering - October 2022 - CVR2
Automotive Engineering - October 2022 - 1
Automotive Engineering - October 2022 - 2
Automotive Engineering - October 2022 - 3
Automotive Engineering - October 2022 - 4
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Automotive Engineering - October 2022 - CVR4
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