DHAB S/133 LEM Automotive applications Battery Pack Monitoring Hybrid Vehicles EV and Utility Vehicles

1.Introduction

The DHAB family is best suited for DC, AC, or pulsed currents measurement in high power and low voltage automotive applications. It features galvanic separation between the primary circuit (high power) and the secondary circuit (electronic circuit).
The DHAB family gives you a choice of having different current measuring ranges in the same housing (from ±20 up to ±900 A)

2.Features

● Open Loop transducer using the Hall effect
● Low voltage application
● Unipolar +5 V DC power supply
● Primary current measuring range up to ±75 A for channel 1 and ±750 A for channel 2
● Maximum RMS primary admissible current: defined by busbar to have T° < +150 °C
● Operating temperature range: −40 °C < T° < +125 °C
● Output voltage: full ratio-metric (in sensitivity and offset).

3.Special feature

Dual channel sensor for wider measurement range and redundancy

4.Advantages

● Good accuracy for high and low current range
● Good linearity
● Low thermal offset drift
● Low thermal sensitivity drift
● Hermetic package

5.Automotive applications

●Battery Pack Monitoring
● Hybrid Vehicles
● EV and Utility Vehicles

6.Principle of DHAB family

The open loop transducers uses a Hall effect integrated circuit.The magnetic flux density B, contributing to the rise of the Hall voltage, is generated by the primary current IP to be measured.The current to be measured IP is supplied by a current source i.e. battery or generator (Figure 1)

7.Dimensions (in mm)

Shenzhen Hongxinwei Technology Co., Ltd is located in the Bao’an District of Shenzhen.It is a high-tech enterprise setting research and development, production, sales into an integration. The company covers an area of 15 acres, having modern producing workshop and professional production and testing equipments. The company has an existing staff of more than 100 people.The company has set up offices in Shenzhen, Hongkong and Singapore providing worldwide service.