The world-renowned sensor expert Lem Electronics CAB high-precision current sensor, this series of sensors for pure electric vehicle (EV) and hybrid electric vehicle (HEV) design, the battery input and output current measurement accuracy Sensor to a new level. The car manufacturer needs this data to maximize the type of vehicle, keep the battery in good condition and optimize the battery pack size.
Lyme's CAB sensor current measurement capability of up to ± 400A, with unlimited overload capacity and high accuracy: new energy vehicles under normal operating conditions, the linear accuracy increased to 0.1%. This sensor is electrically isolated and non-intrusive. There is no wire connected to the power supply circuit during the measurement, ensuring safe operation and no excess heat or loss compared Suction Control Valve to the method of measuring the current with the access resistance.
CAB uses a small panel to install the model, not including the size of the accessories only 71x52x21mm, through the perforation access to the original conductor (car engine power supply battery). It is powered by a 12V voltage and operates from -40 to + 105oC. The CAB sensor uses the automotive industry CAN bus standard to transfer data Fuel Rail Pressure Sensor to the EV / HEV control circuit. If necessary, Lyme can provide other bus and standard to transmit the sensor output signal.
In the CAB sensor, Lyme chose to use the reliability-proven fluxgate principle. Fluxgate sensors use advanced magneto-current measurement principles that can offset many of the zero and gain errors that occur in simple current measurement techniques.
The charge state (SOC) in EV and HEV is a key measurement function. During the driving process, the battery either discharges by driving the car, or stores the energy in the battery by braking or charging. In these transient processes, the battery voltage does not reflect the SOC state well - the amount of charge delivered during charging and discharging. At this point the precise ABS Sensor monitoring of the battery requires accurate current measurement technology.
To ensure battery life, EV and HEV batteries are generally not fully discharged or fully filled. If the carmaker needs to keep the margin for the accuracy of the energy measurement, they must continually improve the safety margin. The emergence of CAB sensors allows car designers to fully trust the Speed Sensor valuation of SOC, which can reduce the size and weight of the car battery pack.