Express Solo Overview

The following section provides a product overview of the Express Solo.

Product Description

Express Solo is a product within the Express DC fast charging platform. Express Solo operates as both a standalone charging station and a power cabinet. It accepts AC input power, converts it to DC, and delivers power to two integrated charging cables. It can also simultaneously supply power to downstream EVSEs such as external Power Link charging dispensers.

For information on Power Link charging dispensers and other modular EVSEs in the ChargePoint Express platform, refer to the Express platform documents at ChargePoint Product Reference Documentation.

Exterior Parts

The following shows an exterior view of the Express Solo.

Express Solo Exterior Parts

Ref

Part

 Ref Part
(a)

Cable management system, left

(n)

Holster, right
(b)

Tetherball, left

 (o)

Holster, left
(c)

Charging cable, left

 (p)

Bottom plate
(d)

Status LED, left

 (q)

Charging connector, right
(e)

Exhaust (left) door with airflow vents

 (r)

Charging connector, left
(f)

Exhaust door lock

 (s)

Lifting points
(g)

Smart Antenna

 (t)

Cable management system, right side
(h)

Logo plate (customizable)

 (u)

Tetherball, right
(i)

Status LED, right

 (v)

Charging cable, right
(j)

Area downlight (front – illumination side)

 (w)

Intake (right) door with airflow vents
(k)

Display door (with customizable vinyl)

 (x)

Intake door lock
(l)

Display/CCOMClosed Control and Communications Module assembly (display side) (*)

 (y)

Rear panel
(m)

Display door lock

    

(*) CCOMClosed Control and Communications Module = Control and Communication Module

Cable Management System

Express Solo is available with several cable management options:

  • Fixed Tether Point – Charging cables are suspended from fixed points on left and right sides of the charging station.

Interior Parts

The following shows a front interior view of the Express Solo.

Express Solo Exterior Parts - Front

Ref

Part
(a)

Coolant reservoir
(b)

Liquid cooling system
(c)

Display/CCOMClosed Control and Communications Module Assembly (CCOMClosed Control and Communications Module side)
(d)

Neutron modules
(e)

Ion filter
(f)

Coolant circulation pump for liquid cool charging (LCCClosed Liquid Cooled Cable) loop
(g)

Area downlight (rear housing)
(h) Holsters

The following shows side interior views of the Express Solo:

Intake (Right) Side Exhaust (Left) Side
Exterior Parts

Ref

Part

 Ref Part
(a)

Contactor matrix

 (f)

Wire terminals and bus bars, intake side
(b)

Liquid cooled charging (LCCClosed Liquid Cooled Cable) cable fans

 (g)

Power Management Controller (PMC)
(c)

DC power modules

 (h)

Safety Hub Board (SHB)
(d)

AC power modules

 (i)

Wire terminals and bus bars, exhaust side
(e)

Aux power supply (AUX PSClosed Auxilary Power Supply) modules

 (j)

48 V DC fuse block

System Description

The Express Solo intakes 3-phase AC grid power and performs power conversion with two types of modules:

  • AC Power Module – The AC power module converts AC input power to DC output power. Up to three modules can be installed into each Express Solo to scale total power capacity.

  • DC Power Module – The DC power module is an isolated, bidirectional DC/DC converter that conditions power for delivery to downstream EVs.

The Express Solo has two separate DC power distribution buses, each with its own set of interfaces:

  • DC Grid Bus and DC BUS – 480 V AC and 400 V AC Express Solo models feature a non‑isolated bus called DC Grid that operates at up to 950 V (depending on region and application). These Express Solos are equipped with an interface to its DC Grid Bus, called DC BUS. Two Express Solos may be paired (configured for power sharing) by interconnecting their DC BUSes. 600 V AC Express Solo models do not support DC Grid.

  • DC Output Bus and External DC Outputs – The DC Output Bus is an isolated DC bus (100–1000 V) that delivers regulated output power to connected EVs. Power flow from the DC Output Bus is routed through the Contactor Matrix, which outputs power across the two integrated charging cables (charging points (CPs)) and to two discrete external DC outputs designated EXT B and EXT D. Each external DC output can supply power to a single input power path of a Power Link charging dispenser.

The Express Solo is equipped with an Auxiliary Power Supply (APS) system:

  • Auxiliary Power Supply (AUX PSClosed Auxilary Power Supply) Modules – Each cabinet includes AUX PSClosed Auxilary Power Supply modules that generate 48 V DC power for internal electronics and sub-assemblies within the unit.

  • 48 V DC Output – Express Solo provides two 48 V DC outputs for supplying power to connected Power Link charging dispensers.

The Express Solo features an integrated system that facilitates safe and reliable communication and control:

  • Control and Communications Module (CCOMClosed Control and Communications Module) – This module manages the UX hardware and display. It communicates over Ethernet with external system components and manages charge sessions, user authentication, access control.

  • Power Management Controller (PMC) – The PMC controls power flow within the system and serves as the primary interface to ChargePoint Cloud Services. It communicates with the power converters and the contactor matrix to manage the delivery of power to the EVClosed Electric Vehicle. The PMC supports Ethernet ports for communication with various components like the CCOMClosed Control and Communications Module, external charging dispensers, and paired Express Solo cabinets to ensure seamless operation. In the event of a fault, the PMC can instruct the power converters to stop power delivery and open the contactors to isolate the power source.

  • Neutrons – The Neutron module serves as the insulation monitoring device and meter for the charging cables. It detects isolation faults and uses a switch to signal the Safety Hub Board (SHB).

  • Contactor Matrix – The contactor matrix receives commands from the PMC to open or close the contactors as needed.

  • Safety Hub Board (SHB) – In addition to processing fault reports from the Neutron, the SHB supports four dispenser ports for performing continuous electrical isolation monitoring of connected Power Link charging dispensers. Any faults detected are reported to the PMC.

  • Door Interlock Sensor – Express Solo is equipped with a shunt trip relay that de-energizes the cabinet when doors are open. The PMC reads the door sensor status and shuts down power conversion if one of the doors is open. A safety panel sensor triggers the shunt trip if AC input voltage is present. This ensures the station powers down when the cabinet door is open.

Wire Terminal and Bus Bar Locations

The Express Solo has four bus bar landings (A, B, C, and D) at the bottom of the cabinet.

  • On the intake side, A and B are for the DC BUS and EXT B connections.

  • On the exhaust side, C and D are for the DC BUS and EXT D connections.

The following identifies the wire terminals and bus bars accessible from the intake side (right side) of Express Solo. (Safety shields are hidden from view.)

Express Foundation and Cables Entry

Ref

Part
(1)

Safety Hub ports
(2)

Ethernet ports

(3)

DC terminal block for 48 V DC, soft shutdown switch, door interlock sensor wires
(4)

Shunt trip terminals
(5)

DC BUS (intake side) bus bars A
(6)

EXT B bus bars

The following identifies the wire terminals and bus bars accessible from the exhaust side (left side) of Express Solo. (Safety shields are hidden from view.)

Express Foundation and Cables Entry

Ref

Part
(1)

Ground/PE bar (with wire landing studs)
(2)

EXT D bus bars
(3)

DC BUS (exhaust side) bus bars C
(4)

AC input (L1, L2, L3) and neutral bus bars