Ford Ranger EV. Electric Manual - part 7

LESSON 1: VEHICLE OVERVIEW

1-25

DC/DC CONVERTER

ER017-A

HIGH VOLTAGE COMPONENT

DC/DC Converter

•

The DC/DC converter (arrow) is located in the underhood

compartment on the driver side of the battery charger.

•

The DC/DC converter acts as an electronic alternator, charging the

12-volt battery and supplying power for low voltage components

and systems.

•

The DC/DC converter steps down traction battery voltage from

312 volts to 12 volts.

•

A temperature sensor mounted near the 12-volt battery tray allows

the converter to adjust voltage to the 12-volt battery as temperature

changes.

•

The DC/DC converter is controlled by the IAA.

•

The DC/DC converter operates when the key is in the ON position

and with the key in the OFF position when the vehicle is connected

to the power control station (PCS) for charging.

LESSON 1: VEHICLE OVERVIEW

1-26

LIQUID COOLING SYSTEM

Liquid Cooling System Components

Item

Description

1

Two-Speed Electric Cooling Fan

2

Radiator

•

The high voltage electronics used on the Electric Ranger require

cooling under normal use.

•

Excess heat is removed by a liquid cooling system controlled by

the IAA.

•

The liquid cooling system cools the:

– TIM.

– motor/transaxle.

– DC/DC converter.

– A/C inverter motor controller.

LESSON 1: VEHICLE OVERVIEW

1-27

•

The liquid cooling system consists of:

– an Explorer radiator.

– a two-speed electric cooling fan.

– a 12-volt electric coolant pump.

– rubber coolant hoses.

– metal coolant tubes.

– a 50/50 mix of water and glycol Ford specification WSS-

M97B44-C. (Do not mix with previous specification.)

•

The 12-volt coolant pump incorporates a:

– centrifugal impeller design.

– 12-volt DC motor.

– magnetic motor-to-impeller clutch.

NOTE: Adding coolant is not a standard maintenance item. Do not

mix the new glycol with the previous specification. Change coolant at

100,000 miles or 5 years whichever comes first.

LESSON 1: VEHICLE OVERVIEW

1-28

Coolant Hose Routing

Coolant Hose Routing

Item

Description

1

A/C Inverter Motor Controller

2

DC/DC Converter

3

Coolant Temperature Sensor

4

12-Volt Electric Coolant Pump Motor

5

Rubber Coolant Hoses

6

Electric Cooling Fan Module (not shown)

7

Metal Coolant Tubes