Electrical measuring technology for electromobility – Reliable equipment for high-voltage applications

Electrification is playing an increasingly important role in a wide range of vehicle classes and types. Drive and vehicle components have been subject to far-reaching developments. This applies to batteries in particular, which are continuously being improved in terms of their efficiency, size, charging time, and charging capacity.

Increasingly stringent requirements for test operations due to increasing battery voltage

To increase vehicle performance, the clear trend is toward higher voltages. Today, cars with a system voltage of 800 V are on the market. Some heavy-duty vehicles achieve voltages of over 1000 V, and systems with 1250 V or 1500 V DC are already in the planning phase. With up to 3.6 kV DC, special-purpose vehicles (e.g., mining vehicles) are even higher. Voltage must be increased in order to enable high charging capacities, since current cannot be randomly increased for reasons of charging cable manageability.

Many high-voltage components that must be tested for function, safety, and reliability in both the development phase and series production are installed in electric and hybrid vehicles. Due to the applicable standards in the automotive industry, comprehensive tests are required for component qualification.

Why Knick?
For challenging measuring and testing tasks, Knick offers a comprehensive assortment of high-precision isolating transducers for measuring currents and voltages in the high-voltage range. It also includes highly isolating and fast high-precision transducers for controlling test devices on high electrical potential. Knick offers these properties and specifications in a broad range of standard products, but is also able to develop customer-specific solutions based on the special requirements of an application.

H2 [Ind] Application Description

Absatz [Ind] briefly: where can be used Knick products

Electromobility brochure

Overview of test and measurement-specific applications and product solutions for electromobility

Associated applications

Power hardware in the loop (HIL)

With the help of hardware in the loop (HIL) tests, prototypes of devices like the traction inverters, for example, can be evaluated in various battery, load, and error situations without having to test the converter itself on test benches or in vehicles.

Testing battery management systems (BMS)

Test systems generate control voltages in a battery model in order to simulate temperature conditions for battery management systems (BMS) and evaluate the temperature management of the BMS.

Battery cycler

During battery tests, the charging and discharging operations (battery cycles) are continuously simulated in a HIL (hardware in the loop) configuration that corresponds to the typical use profiles when the electric vehicle is in operation. In the process, a series of parameters are measured, including capacity, battery efficiency, and self-discharging.

Inline tests of high-voltage heaters (HVH)

The production process of HV heaters involves many steps, with some of them being manual. Various tests are carried out in-line, according to the corresponding manufacturing stages.

DC voltage measurement for interfaces between vehicle and charging station

For battery electric commercial vehicles, there is a quick-charging option via pantographs. This requires a contact between an external infrastructure system (with movable pantographs) and permanently installed charging rods on the vehicle roof. A DC roof container contains components that check the charging connection and the corresponding voltage, and establish the connection to the other on-board systems.

Electrical safety in factory-side test cells

The test cells used in the manufacturing process are often protected by protective enclosures and voltage detectors.

Do you have more questions? We are here for you.
Contact us!

Suitable products

A26000 Universal Isolated Signal Conditioner | Input 0…±20 mA or 0…±10 V | Current and voltage measurement

Product number:

A26000

P15000 Isolated Standard Signal Conditioner | Input and Output 0(4) … 20 mA or 0 … 10 V | Isolation up to 1000 V

Product number:

P15000

P29000 High Voltage Transducer / Transmitter | Calibrated and Switchable

Product number:

P29000

P41000 High Voltage Transducer / Transmitter | Calibrated and Switchable

Product number:

P41000

P42000 High Voltage Transducer | Calibrated range selection

Product number:

P42000

Current blog post from the interface technology field

Sept 2024

Interface Technology

Hydrogen

Stack and String Voltage Measurement in Electrolyzers and Fuel Cells

Voltage, current and temperature measurement in electrolyzers with P40000 series high voltage transducers

Sept 2024

Interface Technology

New 30 mV Shunt Resistors for Knick Transducers

Knick is expanding the accessory range for its high-voltage transducers with immediate effect by adding shunt resistors with a 30 mV voltage drop

Sept 2024

Interface Technology

Exhibition, InnoTrans

Innovations at InnoTrans 2024 for rolling stock and DC traction power supply

At InnoTrans 2024 Knick presents electrical measurement solutions for rolling stock and DC traction power supply applications

Dec 2023

Company

|

Interface Technology

|

Process Analytics

Knick Austria - direct customer contact in Austria from 2024

Reorganization of sales in Austria and new contacts in the field of process analytics and interface technology

May 2022

Interface Technology

Energy

Energy storage - the handshake between renewable energy and electric vehicles

Energy storage technology such as battery and hydrogen are critical for growth and continuous development of renewable energy and e-mobility.

Feb 2022

Interface Technology

P52000VPD, Voltage

P52000VPD voltage presence detector reliably detects voltages up to 4200 V DC

The new P52000VPD voltage presence detector reliably monitors areas with high voltages and sends a signal to the downstream plant control system when a specified threshold value is reached.

Sept 2021

Interface Technology

USA, Exhibition

Knick Interface at Battery and Electric & Hybrid Vehicle Technology Expo

Knick will be showcasing high-voltage electrical measurement and signal conversion products.

May 2021

Interface Technology

Quadruple Standard Signals in Just One Signal Conditioner

The A20340 can output a standard input signal to four calibrated and galvanically isolated outputs in parallel.

Apr 2021

Interface Technology

Hydrogen

Electrical measurement and process analytics for hydrogen production

Knick products optimize hydrogen production in the process and in electrolyser operation.

Mar 2021

Interface Technology

High-Voltage Transducer, USA, P44000

Condition Monitoring of High-Voltage Motors

Having an active predictive maintenance campaign in place for large rotating equipment can be a key strategy for maximizing process uptime.

Mar 2021

Interface Technology

Pulse frequency conditioner for speed sensors

The new P16000 from Knick is a pulse frequency conditioner that converts frequency signals from speed sensors into standard signals.

Nov 2020

Interface Technology

High-Voltage Transducer, Voltage, P42000D2

Worldwide smallest transducer up to ±2200 V

The P40000 series from Knick enables reliable voltage measurements from ±50 mV to ±3600 V and current measurements from ±100 mA to ±20 kA.

Aug 2020

Interface Technology

DC

Importance of broad-range power supplies for DC electrical measurement

Many DC electrical measurement products manufactured by Knick contain universal, also known as broad-range, power supplies.

Jul 2020

Interface Technology

High-Voltage Transducer, DC, P29000

Measuring Photovoltaic Degradation

Photovoltaic (PV) array degradation is an important aspect to consider for system design and installation.

Jun 2020

Interface Technology

High-Voltage Transducer, USA

Electrical Measurement Solutions: Control from 480 to 4800 Volts

Voltage and current transducers from Knick bring true control to electrical measurement applications across a wide-range of industries.

Jun 2020

Interface Technology

High-Voltage Transducer

Benefits of High Voltage Transducers versus Instrument Transformers

When a need arises to step voltage in a circuit either up or down for purposes of power transmission or distribution, there is no doubt that transformers are essential.

Nov 2019

Interface Technology

DC, USA, Current

Shunt Resistor versus Hall Effect Technology

There are many systems where measurement of large DC currents are needed for performance and safety.

Mar 2018

Interface Technology

MTBF beyond 3000 years: A snap hook for your plant

Failure of equipment on the plant floor can lead to considerable and costly disruption.

Jan 2018

Interface Technology

UL

Knick Products Comply With UL - What Does That Mean?

There are different assessments and approaches to reach an adequate level of safety. Manufacturers are typically on the “safe” side, if they comply with recognized standards.

Nov 2017

Interface Technology

High-Voltage Transducer, P50000

High-voltage transducer offers more safety on railway vehicles

The requirements placed on railway vehicles have increased significantly in recent years. Products for rolling stock need to ensure a higher level of functional safety than ever before.

Feb 2017

Interface Technology

P41000TRMS