Vehicle Controller

Marvel EVM offers a range of services tailored to meet the needs of modern electric vehicle projects.

The vehicle controller is referred to as VCU (Vehicle Control Unit), which is responsible for the control center of the whole vehicle, and adopts the automotive-grade NXP. The main functions include:

Vehicle driving intention judgment;

Drive torque distribution and energy consumption management;

Logic control of vehicle power on and off;

Signal acquisition and vehicle accessory control;

Vehicle fault diagnosis management

Vehicle safety management.

powertrain Parameters - CVCT-V-064-003

Our Plans
CATL
Input Voltage
9~32VDC
Power
<5W (without output)
Input
2-way wake-up (high), 12-way digital signal (high and low can be matched), 10-way analog signal ( 0~5V), 2-way analog signal ( 0~15V), 1-way analog signal ( 0~30V), 2-way PWM signal4)
Output
4-way sensor power outputs (5V), 6-way digital low-side drivers, 4-way digital high-side drivers, 3-way digital high-level enable outputs, 4-way PWM outputs, 2-way analog signal outputs (0~5V)
Correspondence
3-way CAN communication, 1-way serial communication.
Charge rate
250A/1.0C/1.0C
Operating temperature
-40℃~ +60℃
Cooling method
Natural cooling
Size
138.9mm×201.2mm×41.5mm
Weight
0.6kg
Protection class
IP67

Efficient control

The whole vehicle software adopts real-time control with sampling interval time of 1ms, and adopts reasonable underlying driver writing to reduce ineffective sampling and processing, which provides more accurate support for the upper layer application programs such as driver's intention judgment, strategy analysis, and so on.

Stability Control

Active damping control technology, used to eliminate torque pulsations caused by sudden torque changes, the VCU simulates the damping effect by dynamically adjusting the rate of torque rise and fall under the premise of satisfying dynamics and acceleration, thus suppressing vehicle judder.

Technical Advantages

The self-developed control algorithm, with the optimal energy consumption of the motor as the control objective, dynamics and stability as the constraints, obtains the requested torque of the motor, and can independently search for the optimal point of efficiency during the operation of the drive system.

battery in Electric Bus

Purpose:

Stores electrical energy and provides power to the traction motor, HV components, and via DC-DC conversion, also to LV systems like lights, wipers, and controls.

Key Specifications

Parameter
Typical Value / Info
Battery Type
Lithium-ion (LFP, NMC, or LTO)
Voltage
600V to 800V (High Voltage)
Capacity
150 – 350 kWh (depending on range & bus size)
Range
150 – 300 km per full charge
Weight
~500–1000 kg
Cooling
Liquid-cooled / air-cooled
Charing Time
1.5 – 4 hours (fast charging)
Cooling method
Liquid-cooled, the whole vehicle needs to consider the matching of water-cooled units
Cycle Life
2000 – 5000 charge cycles

Main Components of Battery Pack:

Component
Function
Battery Modules
Group of cells arranged in series/parallel
Battery Cells
Actual units storing energy
BMS (Battery Management System)
Monitors and protects the battery
Thermal Management
Maintains optimal operating temperature
Contactors / Fuses
Control and protect high-voltage connections
Casing
Protects battery pack from vibration, heat, and water