BYD B-Box H User manual

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B-Box H
Installation Guidance
Rev.1.0_May.2017

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Contents
SAFETY ...................................................................................................................................................................................................................................................... 3
1 PRODUCT OVERVIEW ......................................................................................................................................................................................................................... 4
2 BCU INTRODUCTION ........................................................................................................................................................................................................................... 6
3DESCRIPTION OF B-PLUS-H INTERFACEAND TERMINAL........................................................................................................................................................... 8
4B-BOX H INVERTER CONFIGURATION LIST ................................................................................................................................................................................... 9
4.1B-BOX HCONFIGURATION LIST WITH SMASUNNY ISLAND –ON GRID ...........................................................................................................................................................9
4.2B-BOX HCONFIGURATION LIST WITH KOSTAL–ON GRID .............................................................................................................................................................................9
5PREPARATORY WORK........................................................................................................................................................................................................................ 10
5.1INSTALLATION INSTRUCTIONS ........................................................................................................................................................................................................................10
5.2 PACKING INFORMATION AND SYSTEM STRUCTURE CONFIGURATION LIST.....................................................................................................................................................11
5.3STRUCTURE CONFIGURATION LIST.................................................................................................................................................................................................................11
5.4 INSTALLATION TOOLS....................................................................................................................................................................................................................................12
5.5 PERSONAL PROTECTION EQUIPMENT.............................................................................................................................................................................................................12
6INSTALLATION OF SINGLE CABINET ............................................................................................................................................................................................. 13
7CONNECTION WITH THE INVERTER.............................................................................................................................................................................................. 16
8SYSTEM BOOT...................................................................................................................................................................................................................................... 19
8.1OPEN THE AIR SWITCH OF BATTERY...............................................................................................................................................................................................................19
8.2 SET THE BCU................................................................................................................................................................................................................................................19
8.3OPEN THE INVERTER ......................................................................................................................................................................................................................................23
8.4OPEN THE AIR SWITCH OF BATTERY,AND THE SYSTEM CAN WORK NORMALLY................................................................................................................................................23
9SYSTEM SHUTDOWN .......................................................................................................................................................................................................................... 23
Website of installation video: http://www.byd.com/energy/b-box-25.htm

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Safety
Warning:
When dismantling the system, avoid touching the battery terminal with the metal objects or human body. The work relating to electrical connections of the system
shall be done by competent persons.
All operations of B-Box H relating to electrical connection must be done by professionals.
During operation of B-Box H according to the predesigned mode, it provides a safe power source.
Improper operation, damage, incorrect use and abuse of the product might cause potential danger (for example, overheating or electrolytic mist). Please comply
with the following safety precautions and warning information. If you don’t fully understand any one of the following preventive measures or have any doubt,
please contact our customer service staff.
Installation and maintenance workers must operate according to the applicable federal, state and local regulations and industry standards of B-Box H.
Installation workers may not wear metal jewelry, etc. in order to avoid short circuit and personal injury.
Warning:
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.
To add battery, first disconnect the power supply of the battery and other power input.

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1 Product Overview
B-Box H is the abbreviation of high-voltage battery box, with the operating voltage range within 200~500V. It is applied in the household
energy storage field and works together with high-voltage inverter to realize energy storage and release. Each set of batteries of the system
supports the serial connection of 5~9 battery modules, and parallel connection of 1~5 sets of batteries.

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Position Designation
A Base
B Battery
C BCU
A
B
C

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2 BCU Introduction
The battery management and control part, which contains BCU and charge-discharge relay, is connected to the battery modules underneath and to inverter or BMU
above.
Position Designation
A Inverter communication interface
B P-interface
C P+ interface
D Ground interface
E Ethernet interface
E A D C
B

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Definition of BCU Functional Interfaces
No.
Interface Name
Description
1 P+
The system anode, connected to the anode of
battery interface of inverter.
2 P- The system cathode, connected to the cathode
of battery interface of inverter.
3 GND Grounding terminal, connected to the ground.
4 Ethernet
Connected to the Ethernet, to complete the
functions of communication and remote
program update.
5 Inverter
communication
Contain RS485, CAN, and
enable signals,
outputting 13V power.
6 System switch
The main switch of system, which can be
operated
manually and has short circuit
protection function.
Position Designation
A Air switch waterproof cover
B System switch
A
B

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3Description of B-Plus-H Interface and Terminal
The battery module provides energy and sends the information about the cell voltage and cell temperature in the battery module to the upper-layer BCU.
Pluggable terminal on the battery
Side-lock, used to lock the upper
and lower batteries.

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4B-Box H Inverter Configuration List
4.1B-Box H Configuration List with SMA Sunny Island –On Grid
1 Phase on Grid
Inverter Type B-Plus-H BCU
Sunny Boy STORAGE 2.5 5-9 1
4.2B-Box H Configuration List with KOSTAL–On Grid
3 Phase on Grid
Inverter Type B-Plus-H BCU
PIKO 6.0 BA 5-9 1

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5Preparatory Work
5.1Installation Instructions
a) Before installation, ensure that BCU manual switch is in disconnected state.
b) The battery shall be installed in a place away from heat source and avoid sparks. The safety distance is greater than 0.5m.
c) The connecting cables for installing batteries shall be as short as possible, to prevent too big voltage drop of the line
d) Batteries of different capacity, different P/N or from different manufacturers cannot be connected.
e) After installation, ensure the anode and cathode of BCU and inverter are connected correctly.
f) The installation place shall be on a horizontal ground, without accumulated water.