Powerful modular battery system for new generation of electric vehicles

The challenge for many manufacturers of Light Electric Vehicles is how to achieve high capacity and high power in combination battery swapping.

Cleantron has developed a powerful, modular battery system: the High Power Multi Pack Configuration. The future for Light Electric Vehicles such as

scooters and minicars begins with Cleantron HP MPC.

Electric driving is ‘in’, but is also in danger of stagnation. Many countries

Cleantron has therefore developed modular technology to increase

High Power MPC. High Power MPC is a groundbreaking battery system

Cleantron has years of experience with the development and production of 48V portable lithium-ion batteries. On the basis of this expertise a special

team of engineers developed the High Power MPC system. This is an integrated system in which one fixed high-power lithium-ion battery-pack and one

(or more) compact, high-capacity lithium-ion battery module(s) work intelligently together via a special unidirectional DC/DC converter with no loss of

To guarantee that the vehicle can both operate

(electric vehicles) and NENEN 506041

(rechargeable lithium batteries for Light Electric

Vehicles).

Portable, touch-safe lithium-ion batteries

Cleantron has designed the portable component in such a way that as much energy as possible 1.4 to 2.4 kWh per battery) is generated by batteries

The portable battery modules weigh less than 10 kg. and can be employed like a laptop. To achieve this low weight Cleantron limits the discharge power,

so that lighter wiring and smaller connectors can be used and deterioration of the battery cells is limited.

The portable battery modules are switched in parallel using the Cleantron MPC system. This system controls the communication between the batteries,

and deterioration of the fixed battery, and this battery is used to the full. Cleantron offers a choice of three types of converters 48/48 V, 48/100 V and

48/400 V for different power trains.

The following aspects play a role in the choice of the type of converter:

Cleantron can supply a low or high voltage battery-pack to match the powertrain in question and performance requirements. There is also a choice of

temperature range and low cell impedance, which limits the heating of the cell. This minimal temperature development makes LTO batteries eminently

suitable for high discharge currents in high ambient temperatures, without the need for active cooling. The chemistry of LTO also offers the advantage

Due to the more attractive cost level, NMC Lithium Nickel Manganese Cobalt Oxide) and NCA Lithium Nickel Cobalt Aluminum Oxide) will be the

candidate chemistries for larger, high voltage, HP MPC systems. Cleantron produces and supplies fixed batteries with a capacity of choice between 1

and 60 kWh. With so many options one can configure the optimal battery system, taking into account performance and service life.

The High Power MPC system offers vehicle manufacturers the possibility of combining portable batteries and a fixed battery in optimal application-

specific ways. The system is particularly suitable for micro-mobility (two-wheeled vehicles such as electric motorcycles and scooters, and minicars),

The High Power MPC system never comes to a standstill during a journey because of the emptying of the fixed battery: the portable batteries make sure

During acceleration the charge status or SOC State of Charge) of the fixed battery fluctuates, because the energy consumption of the power train is

higher than the capacity of the DC/DC converter. The charge status stabilises at cruising speed, recovers during braking and while the vehicle is

stationary. In this way the system guarantees a relatively stable charge status of the fixed battery. Eventually, when driving both the fixed battery and

Driveline specification:

Nominal Power: 2.5 kW (at continuous cruising top speed)

Nom. system voltage: 50V

Fixed Battery:

Mass and discharge current optimised

DCDC converter:

Urban distribution vehicle (Urban LEV)

The operating radius of an urban distribution vehicle can be increased with the use of portable batteries, matched to the required operating radius for

The charge status of the fixed battery will slowly decrease (figure 3a), but is continually recharged by four portable batteries (figure 3b).

The fixed battery can also continue to be recharged while the vehicle is parked (without any charging infrastructure). That’s a major benefit. Of course it’s

also possible to change a portable battery module while parked up, and to continue the route with fully charged portable batteries in order to make use

Driveline specification:

Nominal Power: 7 kW (at continuous cruising top speed)

Nom. system voltage: 90V

DCDC converter: