Bosch launches new compact electrical drive module for mild industrial automobiles; debuts at Daimler Truck


Bosch is beginning quantity manufacturing of a brand new drive unit consisting of an electrical motor and an built-in inverter for mild industrial automobiles. The inverter controls the electrical motor and supplies the connection to the high-voltage battery.

In comparison with its predecessors, the brand new unit supplies even larger energy and torque density and is even lighter and extra compact.

—Dr. Markus Heyn, member of the Bosch board of administration and chairman of the Mobility Options enterprise sector


Collectively, the motor and inverter weight is round 80 kilograms. Bosch has diminished electrical losses by greater than 20% utilizing new energy semiconductors, which allows an inverter effectivity degree of 97%, thereby growing the automobiles’ vary.

With the versatile building, additionally it is now even simpler to combine the drive module into present and new automobile fashions.

The electrical drive will make its debut at Daimler Truck, supplemented by a DC/DC converter and the automobile management unit from Bosch for the drivetrain. The unit’s most energy is 129 kW, whereas the continual energy is 100 kW. For a short while, the permanent-magnet synchronous machine can generate a peak torque of 430 N·m. Even at a automobile weight of 8.5 tons, this ensures superior driving efficiency in each scenario—together with in hilly cities similar to Tokyo, Rome, or San Francisco.

The Bosch engineers primarily based the design of the electrical motor and the inverter on expertise used within the passenger automobile phase. This not solely sped up the event section significantly, but additionally helped slicing prices.

By embedding the electrical drive module within the automobiles’ present water-cooling circuit, an oil-based cooling circuit is not vital. Moreover, the excessive rotational velocity of the electrical motor ensures a single-speed transmission to be adequate to fulfill all necessities.

The smaller dimensions of the brand new electrical drive imply {that a} battery made up of a single half can now be used. New microcontrollers supply significantly extra computing energy to course of the complicated management algorithms of the electrical drive inside milliseconds. On this context, the software program is basically answerable for the conduct of the electrical drive and may be tailor-made to prospects’ particular necessities.

The drive module will roll off the manufacturing line in Hildesheim, Germany, the Bosch lead plant for electrical drives.

Bosch has already invested greater than €5 billion in e-mobility, stated Heyn. Since 2018, the corporate has acquired 170 manufacturing tasks. Gross sales income is anticipated to exceed the five-billion euro mark in 2025.

Bosch has a broad portfolio of merchandise accessible to prospects, starting from particular person sensors, electrical motors, energy electronics and digital management models to built-in options such because the eAxle, by means of to pre-integrated modules. The superior driving module, for instance, which integrates the drive, steering and brakes, presents simplified interfaces and thus improves communication between the parts. This ensures optimum interaction between the electrical automobile’s programs and subassemblies—e.g., when it comes to automobile stabilization or power recuperation, in addition to a considerably shorter time-to-market.


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