3 Function Unit in Container

3.1 Battery system

3.1.1 Battery pack

Figure 3-1 Battery PACK

Table 3-1 Battery pack technical data sheet

Table 3-2 Ports on battery pack explain

3.1.2 Battery string

Figure 3-2 LS385-8LP48 Battery string layout

Table 3-3 LS385-8LP48 Battery String Configuration Table

Each battery string (battery cluster) contains

3.2 High voltage unit

3.2.1 High-voltage unit characteristics

Figure 3-3 High voltage unit

The unit has the ability to disconnect the high-voltage unit is the and control of the battery string from the main system. The details are as follows:

· The power circuit uses contactors, fuses and isolation switch integrated to protect the battery string reliably.

· The unit is also CMU integrated. CMU, as the second-level BMS to collect the data from each cell management unit, BMU, realizes current monitoring and protection of the whole string battery and ensures in-time communication.

· The power supply control in the unit adopts a redundant design of the AC-DC power supply, which supports the black start of the system.

Using reliability is balanced with speed to optimize communication, the important information is uploaded by Modbus.

Table 3-4 High-voltage unit technical data table

Table 3-5 Ports on the high-voltage unit definition

3.2.2 High voltage unit fuse

Figure 3-4 High voltage unit fuse position

If the fuse is damaged, it needs to be replaced. The replaced fuse must meet the requirements of Table 3-6

Table 3-6 Specification of high voltage unit fuse

3.3 GPC control box

3.3.1 Equipment layout

Figure 3-5 Controller appearance

Figure 3-6 GPC control box equipment distribution

The GPC control box is divided into three layers. The first layer is the door of the control box, on which the touch screen (HMI) device is installed, the second layer is the EMU and PCS connecting plate, and the third layer is the internal device layer of the control box.

The device layer inside the GPC control box is divided into upper, middle and lower layers. The upper layer is the power module (KCPS1), switch (SWT), router (TP) and PLC controller, the middle layer is the system internal power supply and signal terminal block, and the lower layer is the reserved system function signal input/output terminal block and relay switch.

Figure 3-7 GPC control box equipment

Figure 3-8 Router port definition

Table 3-7 Router port description

Figure 3-9 Fuse core position of GPC control box

If the fuse is damaged, it needs to be replaced. The replaced fuse must meet the requirements of Table 3-8.

Table 3-8 Specification of fuse core of GPC control box

Figure 3-10 HMI touch screen

Table 3-9 GPC control box HMI Touch screen Description

HMI is the human-computer interaction window of the whole system. System control, state monitoring and operation parameter setting are all realized through HMI. HMI can be divided into five interfaces according to different functions: Home Page, Environmental Control System (ECS), Control, Status, and System.

Figure 3-11 HMI display menu tree

3.3.2 Features and functions of the GPC control box

· Integrated system visualization window HMI.

· System key information collection, current monitoring of charge/discharge data.

· Data information storage is safe and efficient.

· Automatic recording of events, alert information on the top reminder.

· Topology structure shows system status.

· User rights management at different levels using.

· Support physical network cable transmission and wireless signal transmission.

3.4 Primary distribution box

The primary distribution box is the AC output port of the system and is connected to the power grid through an external transformer cabinet. It contains the primary AC switch of the system and the Wire copper bus bar.

Figure 3-12 Primary distribution box layout

Table 3-10 Primary distribution box layout description

After passing through the circuit breaker, the AC output of each group of series converters is combined with the AC busbar in the primary distribution box. The busbar is the AC outlet end of the system, where the external transformer or booster bin is connected to the energy storage system.

Figure 3-13 Copper busbar at AC side of the system

Figure 3-14 Fuse position of distribution box

If the fuse is damaged, it needs to be replaced. The new fuse must meet the requirements of Table 3-11.

Table 3-11 Specification and parameters of fuse in distribution box

3.5 Distribution box

The distribution box contains power switches for secondary equipment and reserved communication acquisition terminals, which are connected to 400V voltage through the power grid.

Figure 3-15 Distribution box layout

Figure 3-16 Secondary distribution system diagram

Figure 3-17 Primary distribution system diagram

3.6 Environmental control system

The 20C1600K containerʼs environmental control system includes the air conditioner and liquid Chiller unit. The liquid Chiller unit delivers low-temperature coolant to the copper tube inside the battery pack. The coolant will exchange heat with the cells inside the battery pack, and the heated coolant will return to the liquid Chiller unit. The radiator inside the liquid Chiller unit will release heat into the air outside the container.

The air conditioner is responsible for maintaining the air humidity inside the container. When the humidity reaches the set value, the dehumidification function will be activated.

3.6.1 Liquid Chiller Unit

Product Features:

· Integrated design, saving on-site installation and debugging costs

· Independent dual system design with high control flexibility

· High energy efficiency variable frequency compressor, variable frequency design, efficient and energy-saving

· Stepless speed regulation of compressor and intelligent regulation of cooling capacity

· Intelligent speed regulation of fan, constantly matching with thermal load, efficient and energy-saving

· Select RS485 interface to achieve remote setting and monitoring functions

· Equipped with automatic start function for incoming calls and providing various alarm and protection functions

· Environmentally friendly refrigerant that meets RoHS requirements

· High reliability, 365 days/year uninterrupted operation

· Small size and compact structure

Figure 3-168 Liquid Chiller unit (EMW400HCNC1E)

Liquid Chiller Unit Parameter

3.6.2 Dehumidifying air conditioner

Figure 3-179 Dehumidifying air conditioner (MC03CDNC1B)

3.6.3 Air Conditioner

Figure 3-20 Air conditioner (MC06HDNC1A)

3.6.4 Temperature and humidity sensor

Figure 3-21 Temperature and humidity sensor

The RH811AD053F temperature and humidity sensor is designed mainly for industrial, commercial and general building of environment monitoring. It is used in so many occasions which need to be examined and controlled.Such as factory workshop, purification room, laboratory, engine room, work and commercial buildings,airport, station,museum, stadium and so on.

Table 3-12 Technical parameter

3.6.5 Water immersion sensor

Table 3-13 Technical parameter

3.6.6 Gon760 fixed gas detector

Figure 3-204 H₂/CO gas detector

The shell of "Gon760" series fixed gas detector is explosion-proof as a whole. The shell is made of stainless steel or aluminum alloy, and the contact surface with the gas adopts a filter screen that does not produce adsorption on the measured gas or a stainless steel sintered explosion-proof filter screen. The audible and visual alarm is made of anti-corrosion and anti-oxidation materials, with explosion-proof structural design.

Table 3-14 Technical parameter

3.7 Lighting system

3.7.1 LED lighting

Figure 3-215 20W LED Linear Light

Table 3-15 Technical parameter

3.8 Emergency button

Figure 3-226 Emergency power off button of energy storage system

Table 3-16 Technical parameter

3.9 Fire fighting system

3.9.1 Fire controller

Figure 3-237 Fire controller

Table 3-17 Technical parameter

3.9.2 Gas release indicator

Figure 3-248 Photoelectric smoke detector

Table 3-18 Technical parameter

3.9.3 Temperature Detector

Figure 3-249 Photoelectric smoke detector

Table 3-19 Technical parameter

3.9.4 Alarm bell

Figure 3-30 Alarm bell

Table 3-20 Technical parameter

3.9.5 Acousto-optic alarm

Figure 3-31 Acousto-optic alarm

Table 3-21 Technical parameter

3.9.6 Fire emergency stop button

Figure 3-262 Fire emergency stop button

When the fire emergency stop button pressed, the fire extinguishing agent release function of the system is closed.

Conventional manual push button with glass breakage, Blue color IP67. Complete with mounting box.

Table 3-22 Technical parameter

3.9.7 Manual switch with emergency start

Figure 3-273 Manual switch with emergency start

Conventional manual button outside of glass break, Yellow. IP67. Complete with mounting box. Translucent "Extinguishant Release".

Table 3-23 Technical parameter

3.9.8 Water Firefighting interface

Figure 3-284 Water Firefighting interface

The Storz system is a hermaphrodite, symmetrical coupling which is connected by two internal lugs. The connection size of the adaptor is determined by the internal dimension between the lugs (the KA distance).

Table 3-24 Technical parameter

3.9.9 Gas release indicator

Figure 3-295 Gas release indicator

Table 3-25 Technical parameter

3.9.10 Ventilation system control module

Figure 3-306 Ventilation system control module

The ventilation system control module can interconnect the gas detector and the fire control system controller. When the gas detector detects dangerous gases, the ventilation system control module activates the ventilation system to discharge dangerous gases.

Table 3-26 Technical parameter

3.9.11 Exhaust device

Figure 3-317 Exhaust device

Table 3-27 Technical parameter

3.9.12 Air inlet device

Figure 3-328 Air inlet device

Table 3-28 Technical parameter

3.9.13 Pressure relief device

Figure 3-339 Pressure relief devices

Table 3-29 Technical parameter

Installation of pressure relief valve housing

When shipping the container, a sealing plate is used at the outlet of the pressure relief valve to prevent water from entering during transportation.

After the container arrives at the destination, the pressure relief valve sealing plate needs to be removed and the outer cover needs to be installed.

Figure 3-40 Pressure relief valve sealing plate

Operation:

Step1:  Disassemble the pressure relief valve sealing plate.

Use a shovel to remove the glue around the sealing plate, use a cross screwdriver to remove all screws on the sealing plate, and then remove the sealing plate.

Step2:  Install the outer cover.

Fix the outer cover to the internal pressure balancer. The side of the outer cover with the mesh holes is located at the bottom.

Align the circular hole on the flange edge of the pressure balancer outer cover with the pre embedded rivet nut on the container, and fix it with M4X16 triple combination screw (the original sealing plate fixing hole is the same as the outer cover fixing hole).

Finally, fill the gap with waterproof glass adhesive around the outer flange edge and screw position, as shown in the following figure.

Figure 3-41 Pressure relief valve installation cover completed

Note: For more details, please consult the after-sales engineer.

3.10 Water fire fighting

Figure 3-42 Fire fighting system components

Figure 3-343 Location of water firefighting interface

The fire fighting system is designed according to the specification and size of the 20-foot container. The fire extinguishing agent is transported from the fire extinguishing agent cylinder group through the main pipe and branch pipe to the nozzle of the container battery room to achieve the fire extinguishing function.

The system includes gas cylinder, fire extinguishing agent, solenoid valve, pressure feedback device, fire fighting control system, etc.

The fire control system is mainly composed of fire detector (temperature and smoke), audible and visual alarm device, emergency start and stop button, air release indicator, fire controller, etc.

The combustible gas detector is separately configured to detect the concentration of hydrogen and carbon monoxide in the battery room, and the signal is transmitted to BESS. At the same time, the container is equipped with pressure relief device, air inlet and exhaust fan.

Figure 3-354 Fire fighting system action logic

This system has two control modes: automatic and electrical manual. There are two independent detection circuits in each protection area. When the first fire signal is given, an alarm will be issued, indicating the location of the fire and reminding the staff to pay attention. When the first 2 detector also signal fire, automatic fire extinguishing controller began to delay phase (0 to 30 s adjustable), after a time delay, open the solenoid valve, solenoid valve needle start bottle storage cylinder head valve, the fire area fire fighting operations, at the same time receive the feedback signal from the pressure switch alarm controller, control panel discharge indicator; When the alarm controller is in the manual state, the alarm controller only sends out alarm signals and does not output action signals. After the on-duty personnel confirm the fire alarm, press the emergency start button on the alarm control panel or the emergency start and stop button at the entrance of the protection area to start the system and spray fire extinguishing agent.

3.11 Power conversion system

The conversion system can realize the bi-directional energy conversion between the battery and the AC power supply of the grid.

Its core part is an inverter composed of power electronic components and embedded control software.

Figure 3-365 EH-0200-HA-M conversion appearance

Figure 3-376 PCS schematic diagram

Table 3-30 Main parameters and specifications

Figure 3-387 conversion configuration

Table 3-31 Appearance structure of the conversion

Table 3-32 LED indicator status description