BYD Battery-Box HV series User manual

BYD Battery-Box HV Installation Guidance
Battery-Box H 5.0/7.5/10.0
Version2.0

Content
1 Safety...................................................................................................................................................1
2 Information ........................................................................................................................................5
2.1 Product Overview ................................................................................................................................................5
2.2 Appearance dimension......................................................................................................................................5
2.3 BCU Module Introduction ................................................................................................................................6
2.3.1 Left side of BCU ............................................................................................................................................6
2.3.2 Right side of BCU .........................................................................................................................................7
2.3.3 Definition of BCU Functional Interfaces...............................................................................................7
2.4 Description of B-Plus H 2.5..............................................................................................................................8
2.5 Delivery contents.................................................................................................................................................8
3 Preparation .........................................................................................................................................8
3.1Preparation..............................................................................................................................................................8
3.1.1Installation Instructions...............................................................................................................................8
3.1.2Tools & safety gears required...................................................................................................................9
3.1.2.1 Tools............................................................................................................................................................9
3.1.2.2 Safety gears for personal protection...............................................................................................9
3.2 Unpacking the package.................................................................................................................................. 10
3.2.1 Unpacking.................................................................................................................................................... 10
3.2.2 Items in the package ............................................................................................................................... 10
3.2.3 Separate BCU and base........................................................................................................................... 11
3.3 Adjust the level of the base.......................................................................................................................... 12
3.4 Install battery modules and BCU ..................................................................................................................... 12
3.5 Install the hangers............................................................................................................................................ 13
3.6 Open the top cover of the BCU................................................................................................................... 14
3.7 Power Cables, Ground Cable, Communication Cable & LAN Cable Connection. ..................... 15
3.8 Install the cover of BCU.................................................................................................................................. 18
4 Checking List ....................................................................................................................................18
5 Run and shut down the Battery-Box HV system ........................................................................20
5.1 Switch on the Battery-Box HV system ...................................................................................................... 20
5.2 Updating and Configuration of the Battery-Box HV via web interface ........................................ 20
5.2.1 Login the Battery-Box HV web interface .......................................................................................... 21
5.2.2 Update the latest software of Battery-Box system ....................................................................... 22
5.2.3 Configuration system information...................................................................................................... 23
5.3 Other functions of the webpage ................................................................................................................ 25
6 System Shutdown............................................................................................................................30
7 Contact ..............................................................................................................................................31

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Appendix : Communication Cable Connections with SMA Inverter ...........................................31
1 List of matched inverter vendors ..................................................................................................31
2 Connections with SMA SBS Inverter .............................................................................................................. 31
2.1 Pins definition and connections .............................................................................................................. 31
2.2 Battery-Box H 5.0-10.0 Connection with SMA SBS Inverter.......................................................... 32
2.3 Battery-Box H 5.0-10.0 parameter settings......................................................................................... 32
1 Safety
This section contains safety information that must be observed at all times when working on
or with batteries. To prevent personal injury or property damage and to ensure long-term
operation of the batteries, read this section carefully and observe all safety information at all
times.
BYD Battery-Box HV provides a safe source of electric energy when operated as designed.
Potentially hazardous circumstances such as excessive heat or electrolyte mist may occur under
improper operating conditions, damage, misuse and abuse.
The following safety precautions and the warning messages described in this section must be
observed and complied. If any of the following precautions are not fully understood, or if you have
any questions, contact customer service for guidance. Installation and maintenance personnel
must review and operate according to applicable federal, state and local regulations as well as the
industry standards regarding this product.
All operations of BYD Battery-Box HV relating to electrical connection must be done by
professionals.
Please cut off the power supply and turn off the battery in emergency. For example, when there is
an emergency such as smoke, fire, burning, explosion, etc.
All batteries store chemical energy and contain electrolyte materials, which are usually a fluid or
gel. In the event of an accident which damages the battery casing, electrolyte leakage can create
a hazard. At this time, please contact the after-sales service provider for processing.
Please read the quick installation guide and installation manual carefully, and follow the
installation steps to complete the installation. If the installation is not carried out in accordance
with the requirements and steps, the installer is responsible for the losses caused.
Skilled personnel only:

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This manual and the tasks and procedures described herein are intended for use by skilled
personnel only. A skilled worker is defined as a trained and qualified electrician or installer who
has all of the following skills and experience:
a) Knowledge of the function principles and operation of on-grid systems.
b) Knowledge of the dangers and risks associated with installing and using electrical devices and
acceptable mitigation methods.
c) Knowledge of the installation of electrical devices
d) Knowledge of and adherence to this manual and all safety precautions and best practices.
Warning
Product harm related warnings:
The system switch should only be engaged once the system is ready to be commissioned.
The BCU software must updated to the latest version during commissioning.
In case any issue arises during commissioning, the system must be shut down immediately and
reported to the after sales service.
Observe all safety information of the inverter.
During loading, unloading and handling of the product, be cautious, and avoid accidents of
product damage and personal injury due to the falling of product.
Please do not stack up batteries without protective package when storing or handling batteries,
unless in the case of installation.
When there is a UV3 alarm in the batteries history, the system must be stopped. Continued use
may cause material damage to property or to the user personal health. The after-sale service
partner should be contacted immediately.
The battery can be stored from UV1 to UV3 for a month. When the battery appears UV1 alarm and
the inverter cannot charge the battery, or when the set mandatory charging point is reached, the
inverter does not charge the battery, please contact the after-sales service partner immediately. A
solution must be found and go to the site to resolve it within a month. Otherwise, the battery will
be damaged and unusable.
If the system does not work properly, please contact the after-sales partner in a timely manner
and provide relevant abnormal or fault information. The system switch of the battery must be
turned off before leaving the site.
Human harm related warnings:
High Voltage Storage! Improper handling can cause danger and damage.
Do not touch any live components.
Ensure that disconnected devices can’t be reconnected.
Cover or isolate any adjacent live components.

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When disassembling the system, avoid touching the battery terminal with any metal objects or
human body.
All work relating to electrical connections of the system shall be carried out by qualified personnel
only.
When adding battery, first disconnect the power supply of the battery and other power input.
To avoid danger, do not remove the BCU or battery module when the system is in operation.
The battery must be powered off and disconnected from the inverter and the load during
installation and maintenance for our products.
Continuous operation on a damaged battery can result in dangerous situation that may cause
severe injury due to electrical shock.
Installers must ensure the installation connections and settings are correct before activating the
whole system.
Avoid product damage and human injury during loading, unloading and handling of the products.
Installation workers may not wear metal accessories, etc. in order to avoid short circuit and
personal injury.
Wear high voltage insulating gloves when installing the battery system.
If you smell a pungent odor or electrolyte. Please stop the use of the system immediately, and
then contact the after-sales service provider.
Do not disassemble the battery modules.
Do not touch the battery pack with wet hands.
Do not crush, drop or puncture the battery.
Do not short circuit the terminals, remove all jewelry items that could produce a short circuit.
Warning:
When adding a new battery module, please contact after-service providers and carry it out
according to the instruction released by BYD.
You must read the inverter installation manual carefully before matching the battery system with the inverter.
If the battery is deformed or damaged please do not use it and report it to the after sales service.
Batteries must be installed and maintained by qualified installers or technicians.
The battery system has the function of protecting from overcharging. When the protective
function fails, please do not continue to charge the battery and report it to the after sales service
, so as to avoid personal or material damages.
Always dispose according to local safety regulations.
Store and recharge battery according to user manual strictly.
Ensure reliable grounding.
Do not reverse polarity.
Once the protective packaging has been removed please do only stack the batteries as specified
in this guide to avoid damage to the external surfaces
Do not stack up batteries without package.
The packed batteries are not allowed to be stacked up more than specified layers stipulated on
the package.
Do not expose the battery to temperature above 50℃.

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Do not place the battery near any heat sources and avoid sparks.
Do not expose the battery to moisture or liquids.
Stay away from corrosive gases and liquids, as well as radiation.
Do not expose the battery to direct sunlight.
Place battery in secure location away from children and animals.
Do not allow the battery power terminals to touch conductive objects such as wires.
The Battery-Box HV system can be installed at altitudes of up to 2000m above Mean Sea Level.
The battery system shall be installed in a ventilation location and reserved for at least 0.9m safe
passage distance.
Due to the heavy weight of Battery-Box H 5.0-10.0, please use strong packaging and safety
protection equipment during transportation, to ensure safety and avoid accidental damage.
Battery cabling should be kept as short as possible to reduce voltage drop at high currents.
In the process of transportation and storage, the goods are not allowed to be stacked in layers or
at a height greater than specified.
The installation should be clean, flat, and dry. Not be installed in damp situations, including:
 Baths, showers and other fixed water containers
 Swimming pools, paddling pools and spa pools or tubs
 Fountains and water features
 Saunas
 Refrigeration rooms
 Sanitization and general hosing-down operations
In domestic dwellings, batteries shall not be located in habitable rooms. Habitable rooms including,
but are not limited to, the following:
Bedroom, lounge room, living room, music room, television room, kitchen room, dining room,
sewing room, study, playroom, family room, home theatre, sunroom, bathroom, toilet room,
laundry room.
Temperature requirement
Following installation pictures are some common issues you may meet, some are right and some
are wrong. Please pay attention to it.

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If the ambient temperature is outside the operating range, the battery pack stops
operating to protect itself.
Frequent exposure to harsh temperatures may deteriorate the performance and life of the battery
pack.
For more safety requirements, please install in accordance with local laws and regulations.
2 Information
2.1Product Overview
Battery-Box H 5.0-10.0 is the abbreviation of high-voltage battery box, with the operating voltage
range within 200~500V. It is applied to the household energy storage field and works together
with high-voltage inverter to realize energy storage and release. Each set of battery of the system
supports the serial connection of 2-4 battery module s.
2.2 Appearance dimension

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2.3 BCU Module Introduction
The BCU (Battery Control Unit) is the management or control part of a battery tower. It contains
the circuit board and a system switch. It can be connected to the towers battery modules
underneath and to an inverter or a different BMU above.
2.3.1 Left side of BCU

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2.3.2 Right side of BCU
2.3.3 Definition of BCU Functional Interfaces
Position
Designation
A
System switch waterproof cover
B
System switch
No.
Interface Name
Description
1
P+
The system positive terminal, connected to the positive
terminal of battery interface of inverter.
2
P-
The system negative terminal, connected to the negative
terminal of battery interface of inverter.
3
GND
Grounding terminal, connected to the ground.
4
WAN
Connected to the Ethernet, to complete the functions of
communication and remote program update.
5
COM
Contain RS485, CAN, and enable signals, outputting 13V
power.

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2.4 Description of B-Plus H 2.5
The battery modules B-Plus H 2.5 can be used to store and provide energy. They have to be
located in the middle of a tower in between the BCU and the base module. Consisting of
batteries and the BIC circuit board inside the module sends information about the cell voltage
and the temperature to the connected BCU above.
2.5Delivery contents
Type
5.0KWh
7.5KWh
10.0 KWh
BCU + Base
1
1
1
B-Plus H 2.5
2
3
4
3 Preparation
3.1Preparation
3.1.1Installation Instructions
a) Before installation, ensure that BCU system switch is turned off.
b) Wear appropriate labor protection products before installation.
c) The battery shall be installed in a place away from heating source and avoid sparks. The safety
distance is greater than 1 m.
d) The connecting cables for installing batteries shall be as short as possible, to prevent
excessive voltage drop.
6
System switch
The main switch of system, which can be operated manually
and has short circuit protection function.
8
7

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e) Batteries of different capacity, different P/N or from different manufacturers cannot be
connected.
f) After installation, ensure the ground cable, communication cable, positive and negative cables of
BCU and inverter are connected correctly.
g) The installation place shall be on a flat ground, without accumulated water.
h) Batteries must be installed and maintained by qualified installers or technicians.
i) In order to ensure the normal operation of the Battery-Box, please be sure to update the firmware
to the latest version and finish the configuration on Battery-Box webpage in accordance with this
document or quick reference guide.
j) Please make sure the system switch is off in case the system is not working.
k) The installation and correct working mode should be finished in any case within one week to
avoiding overdischarge or other irreversible damages.
3.1.2Tools & safety gears required
3.1.2.1 Tools
The following tools are required to install the battery and BCU.
3.1.2.2 Safety gears for personal protection

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High Voltage Storage! Improper handling can cause danger and damage.
Wearing suitable personal protective equipment for all work on the product.
It is recommended to wear the following safety gears when handing the battery and BCU.
Safety shoes: In the installation process, when the battery accidentally dropped, can act as a buffer to
protect the foot.
High voltage insulation protective gloves: prevent high voltage, protect human life.
3.2 Unpacking the package
The battery, BCU and base are packed in separate carton. Before installation, the installation
personnel shall read the system configuration list.
3.2.1 Unpacking
Tools: Knife
3.2.2 Items in the package
Packing of BCU & BASE
Battery

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Name
Quantities
M6 hex screwdriver
6
M6X50 expansion bolt
3
M5 OT•terminal•for•P+/P-/ grounding
4
Sealing plug black
3
Sealing plug white
2
Quick installation guide
1
User manual
1
Notice
1
Packing of B-plus H 2.5
Picture
M6 hex screwdriver
2
Sealing plug white
2
MSDS
1
3.2.3 Separate BCU and base
BCU & Base are locked and packed in the same box, unlock the lock with precision screwdriver,
separated the BCU and the base. BCU and Base are locked together with anchor bolts, disassemble
all the anchor bolts with adjustable wrench.
Tools: M6 hex screwdriver

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3.3 Adjust the level of the base
The anchor bolts should be screwed into the lower part of the base at first. The installation
distance from the base module to the wall should be between 0mm and 63mm. The anchor bolts
can be adjusted in height to levelize the base module. Counter nuts should be tightened to fix
the anchor bolts.
Tools: Inclinometer (Level) ， Wrench
3.4 Install battery modules and BCU
The battery modules should be installed on top of the base module. Each module should be
carefully placed on the top of the lower one and the side-locks should be closed using the inner
Fixing arch

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hexagon spanner. Avoid collision of the connectors and corners. After installing all battery modules
the BCU module should be placed at the top of the tower and also be fixed with the side-locks.
Tools: churn drill, M6 hex screwdriver
Install battery modules and BCU
Avoid collision of the connectors and corners
3.5 Install the hangers
Tools: Churn drills，Pencil, M6 hex screwdriver
1 Use a pencil to mark the location of the hole to be drilled.
2 Remove the BCU, punch holes in the wall with hammer drill.
3 Install expansion bolt in punched holes.
4 Install the BCU, then lock the crews and expansion bolt.

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3.6 Open the top cover of the BCU
To demount the cover of the BCU the Phillips screws around the edge has to be screwed out.
Ensure that the seal of the cover is not broken when demounting and mounting the cover. This is
needed to ensure IP 55 protection level. - Warning: The system switch of the BCU should be
turned off when opening the cover. Danger of high voltage.
Tools: M6 hex screwdriver
Fit in the BCU,
lock the side
lock,
installation
finish.

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3.7 Power Cables, Ground Cable, Communication Cable & LAN Cable
Connection.
After demounting the cover of the BCU the circuit board can be seen. Warning: Touching
anything else than the terminals or scratching the circuit board with tools may damage the
whole system. Due to high voltage it may be dangerous to life to get in contact with the circuit
board. The system switch must be turned off when working on the circuit board.
Tools: Phillips screwdriver, Wire clamp
The cables must comply the recommended cable standard shown in the table below. The
connection has to be realized according to regional technical standard. --- The connection
sequence at the BCU should be: 1. Ground cable (attached to the case), 2. Negative cable (P-
Terminal on circuit board, 3. Positive cable (P+ Terminal on circuit board), 4. Communication
cable, 5. Network cable. --- The pin assignment of the Communication cable is depended on the
inverter in use and shown in the relevant chapter.

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High Voltage even if system switch is off.
Function of the cables connected with external devices:
No.
Interface Name
Description
1
P+
The systems positive terminal. Must be connected to the
inverters positive terminal for battery.

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2
P-
The systems negative terminal. Must be connected to the
inverters negative terminal for battery.
3
GND
Grounding terminal. Must be connected to the common ground.
Do not connect it to the ground on the inverter.
4
Ethernet
Connected to the Ethernet, to complete the functions of
communication and remote program update.
5
Inverter communication
Contain RS485, CAN, and EN enable signals, outputting 13V
power.
The COM1 and COM2 terminals share the same pins. The table below show the pin assignment.
Pin
Definition
Description
1
13V+
Positive terminal of 13V output
2
EN 11V+
Positive terminal for inverter enable signal
interface
3
13V-
Negative terminal of 13V output
4
EN 11V-
Negative terminal for inverter enable signal
interface
5
RS485A
RS485 Bus
6
CANH
CAN-Bus
7
RS485B
RS485 Bus
8
CANL
CAN-Bus
9
Shield
Shield line
10
NC
Reserved
CAN_H and CAN_L use twisted-pair 。
Cable standard recommended
Cable definition
Cable diameter (mm)
Sectional area (mm²)
Recommended cable type

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P+ connection cable
Φ4~Φ6.8
6
UL1015 10AWG
P- connection cable
Φ4~Φ6.8
6
UL1015 10AWG
Grounding cable
Φ4~Φ6.8
6
UL1015 10AWG
Communication cable
Φ4~Φ6.8
/
cat5e or above
Ethernet cable
Φ4~Φ6.8
/
cat5e or above
1. If there are relevant local cable technical standard requirements, please use the local standard.
2. After accomplishing the installation, the wiring should be double checked. You can use the
checking list in chapter 4 for this. Please check steps 1-13.
3.8 Install the cover of BCU
Before mounting the cover of the BCU again the installed cables should be checked if they are
connected well. Mounting the cover the seal should not be harmed to ensure IP55 protection
level. All screws of the cover should be tightened carefully to prevent them from harm.
Tool: M4 Phillips screwdriver
4 Checking List
The purpose is to check the connection and parameters setting between the Battery-Box H 5.0-
10.0 and the inverters. The above inspection is only related to BYD Battery-Box HV. For other
inspection, please refer to the inverter user manual and installation manual.
Fit in the BCU,
lock the side
lock,
installation
finish.