KIA Niro: Voltage Check

Warning

Be sure to read and follow the "General Safety Information and Caution" before doing any work related with the high voltage system. Failure to follow the safety instructions may result in serious electrical injuries.

  1. Measure the voltage between the service disconnect plug upper (+) terminal and (High voltage battery -PRA) connecting cable (-) terminal.

Specification: About 180 V (Sub high voltage battery assembly)

  1. Measure the voltage between the service disconnect plug lower (-) terminal and (High voltage battery -PRA) connecting cable (+) terminal.

Specification: About 180 V (Main high voltage battery assembly)

Take insulation actions for parts that may short circuit

Take insulation actions for parts that may short circuit

  1. High voltage battery - PRA cable terminal

  • Place the insulation tape or rubber cap around the (+), (-) cable terminal to prevent short circuit to the battery pack.
  • Secure the cable to the battery pack case with the insulation tape to prevent cables from moving.
  1. BMS voltage sensing connector

Insulation actions

Insulation actions

  • Place the insulation tape or rubber cap around connectors to prevent short circuit to the battery cells, modules.
  • Secure the wiring to the battery pack case with the insulation tape to prevent wiring from moving.

Discharging high voltage batteries

Warning

Be sure to read and follow the "General Safety Information and Caution" before doing any work related with the high voltage system. Failure to follow the safety instructions may result in serious electrical injuries.

High voltage batteries can cause electric shocks or other injuries. If the following symptoms are detected in a high voltage battery, discharge it as soon as possible by submersing it in salt water.

  • There are traces of fire or smoke.
  • The voltage of the battery is abnormally high (302 V or higher).
  • The temperature of the high voltage battery continues to rises abnormally.
  • It smells like chemicals or acryl, which suggests electrolyte leakage.

Discharging a battery by submersing it in salt water

  1. Pour about 53 gallons (200 liters) water into a plastic container (Ex. Poly Propylene) that cans submerge the whole battery.
  2. Add 238 pounds of salt to the water. Stir the water until the salt dissolves into the solution.

Warning

The amount of salt) = 0.538 * (The amount of water that a battery can be fully immersed

  1. Use a lift jack to submerge the high voltage battery in the salt water.
  2. Leave the battery in the salt water for 12 hours before taking it out a drying it thoroughly.

Warning

The battery should be dried in a ventilated shade to avoid direct sunlight, snow and rain.

Warning

Warning

  • Put only one high voltage battery in a single salt water tank.
  • If you discharge more than one battery, put in the battery after discharging the previous battery completely to ensure safety.
  • If not, unexpected accidents such as burns may occur by exothermic reaction.

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