Hyundai Ioniq: High Voltage Battery Control System / Main Relay. Description and operation

Hyundai Ioniq (AE) 2017-2023 Service Manual / Hybrid Control System / High Voltage Battery Control System / Main Relay. Description and operation

Description

The Power Relay Assembly (PRA) consists of the positive and negative main relays, pre-charge relay, pre-charge resistor and battery current sensor. It is located inside the battery pack assembly and controls the high voltage power circuit between the high voltage battery and inverter by the control signal of BMS ECU.

[PRA Operation Sequence]

Safety Plug. Repair procedures

Removal1.Turn the ignition switch OFF and disconnect the auxiliary 12V battery negative (-) terminal.2.Remove the safety plug cover (A).3.Unfasten the hook (A) and then remove the safety plug (C) by pulling the lever (B) to the direction of arrow...

Main Relay. Specifications

Specification Item Specification ContactRated Voltage (V)450Rated Current (A)80CoilOperating Voltage (V)12Resistance (Ω)20...

Other information:

Hyundai Ioniq (AE) 2017-2023 Service Manual: Water Temperature Control Assembly. Repair procedures

Removal and installationWater Temperature Control Assembly1.Disconnect the battery negative terminal.2.Loosen the drain plug, and drain the engine coolant. Remove the reservoir cap to help drain the coolant faster.(Refer to Cooling System - "Coolant")3...

Hyundai Ioniq (AE) 2017-2023 Service Manual: Description and operation

Hybrid Electric Vehicle (HEV)The Hybrid Electric Vehicle (HEV) uses hybrid power source (Engine, Electric motor), so its fuel efficiency is relatively high and exhaust emission is very small compared to the traditional vehicle which uses only engine as power source...