BYD B-Box Pro 12.8 User Manual

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B-Box Professional user manual

B-Box Pro 12.8

User Manual

Rev 2.1_May.2017

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B-Box Professional user manual

Without the written consent of BYD Company, no entity or individual shall extract, copy contents of the document. It is not allowed to be translated under any conditions.

Statement:

The product version update or any other changes to this manual is only allowed with

BYD’s prior agreement. Unless otherwise agreed, the document should be used for

guidance only, all statement information and suggestions in this document do not constitute any expression of contract or liability.

Please contact BYD directly, if you have any further questions.

BYD Lithium Battery Company Limited

TEL: 0755-8988 8888 FAX: 0755-8961 9653

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Contents

1 General Information

................................................................................................................ 4

1.1 About this manual

............................................................................................................... 4

1.2 Target group

........................................................................................................................ 4

1.3 Intended usage

................................................................................................................... 4

1.4 B-BOX and B-Plus definition

............................................................................................. 4

1.5 Identifying the product

........................................................................................................ 4

2 Safety

.......................................................................................................................................... 5

2.1 Safety precaution

................................................................ Error! Bookmark not defined.

2.2 Safety guidelines for installation

....................................................................................... 6

3 Technical parameters

............................................................................................................. 7

4 Technical terms explanation

................................................................................................ 8

5 Product overview

..................................................................................................................... 9

5.1 B-BOX System brief introduction

...................................................................................... 9

5.2 B-BOX configuration table

............................................................................................... 11

5.3 B-BOX System diagram

................................................................................................... 12

5.4 General introduction of BMU

........................................................................................... 12

5.5 General introduction of BMS48250

................................................................................ 13

5.6 Operating environment

.................................................................................................... 14

5.7 BMS address switch introduction

................................................................................... 14

6 Cleaning and maintenance

................................................................................................. 15

6.1 Cleaning

............................................................................... Error! Bookmark not defined.

6.2 Maintenance

...................................................................................................................... 15

7 Dispose special situation

.................................................................................................... 16

7.1 Battery over discharged maintenance

........................................................................... 16

7.2 Force Majeure

..................................................................... Error! Bookmark not defined.

8 BOX CONFIGURATION LIST with different inverter

..................................................... 16

8.1 B-BOX configuration list with SMA sunny island-On/Off grid

..................................... 16

8.2 B-BOX configuration list with GOODWE ES-On/Off grid

........................................... 17

8.3 B-BOX configuration list with GOODWE BP-On grid

.................................................. 17

8.4 B-BOX configuration list with Solax - On grid

............................................................... 18

9 Normal issues and solutions

.............................................................................................. 18

9.1 Normal alarm and solution display on SMA Sunny Island SRC

Error! Bookmark not

defined.

9.2 Normal alarm and solution display on BMS

.................... Error! Bookmark not defined.

9.3 Normal alarm and solution display on BMU

................... Error! Bookmark not defined.

10 Warranty

................................................................................................................................ 20

BYD provides warranty when the product is installed and used according to the description of user manual / installation manual / warranty letter.

... Error! Bookmark not

defined.

11 Login in After service web

......................................................Error! Bookmark not defined.

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1 General Information

1.1 About this manual

This user manual introduces the B-Box product information, user guidance, safety caution items and normal failure and actions. Users can contact the after sales service center if any abnormal failure or urgent issues occur.

1.2 Target Group

This user manual applies to the B-BOX 12.8.

1.3 Intended usage

The B-BOX can be used in household energy storage applications, including on/off-grid system. The B-BOX works with different inverter brands and the user should refer to the configuration list of approved inverter manufacturers recommended by BYD.

1.4 B-BOX and B-Plus definition

BYD battery box product B-Box12.8 is defined as follows: B-Box: Battery Box B-Plus12.8: Battery unit with nominal capacity of 12.8KWh can be installed inside the cabinet as an energy storage module. B-Box 12.8: Battery nominal capacity is 12.8 KWh (Includes 1 set of B-Plus 12.8)

1.5 Identifying the product

The type label describes the product identification information, which is attached to the product. For safe usage, the user must become familiar with the information on the type label. The type label displays:

Product Name： Product Type： Rated Output Voltage:

Rated Current: Operation Temperature Range: Serial Number (P/N No.): Caution:

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Certification Marks:

2 Safety

2.1 Safety precaution

Warning, notice and caution: Users are kindly requested to use the battery which is supplied by BYD Lithium Battery Company Limited in strict accordance with the datasheet and remarks included at the end of this document.

BYD Lithium Battery Co., Ltd. will not guarantee or accept liability for a product installed and operated not in accordance to the guidance manual and resulting in an accident.

WARNING

Do not crush the battery and always dispose according to safety regulations (Do not dispose in fire or water). Recharge battery at least every 6 months (when in storage). Once discharged, recharge battery within 7 days.

Do not expose to temperatures above 55℃ and keep out of direct sunlight. Ensure secure grounding. Do not reverse the front panel.

Do not short/reverse polarity or connect in series. Disconnect from power and load before maintenance. May only be operated by qualified professionals. Storage according to related standard. Do not put one battery on top of another when unpackaged. In the process of transportation and storage, the goods are not allowed to be stacked in layers or at a height greater than specified. When increasing the battery capacity, users should first power off the battery and other power inputs. B-BOX products can only be used in home energy storage applications, and their use is not allowed for life-sustaining medical devices and automotive applications.

CAUTION

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Li-ion battery inside. When disassembling the system, do not intentionally short the positive (+) and negative (-) terminals with metallic objects. All works on system and electrical connections must be carried out by qualified personnel only. B-Box provides an emergency switch to be used for urgent situations. A potentially hazardous circumstance such as excessive heat or electrolyte mist may occur due to incorrect operation, damage or abuse. If the safety precautions and the warning messages described are not fully understood, or if you have any questions, please contact after sales service for guidance. The safety section may not include all regulations for your region. Personnel working with B-Box products must review applicable federal, state and local regulations as well as the industry standards regarding this product. When transporting the system packaged as a bundle, remove the battery from the cabinet and transport them separately.

2.2 Safety guidelines for installation

CAUTION:

Li-ion battery (energy storage unit) inside. When assembling the system, do not intentionally make a short connection between the positive (+) and negative (-) terminals of the battery box with a metallic object. All works on the B-Box and electrical connections must be carried out by qualified personnel only. B-Box provides a safe source of electrical energy when operated as intended and 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. If any of the following precautions are not fully understood, or if you have any questions, contact customer service for guidance. The Safety Section may not include all regulations for your region; personnel working with B-Boxes must review applicable federal, state and local regulations as well as the industry standards regarding this product. Installation personnel cannot wear watches, etc., to avoid short circuit and accidental damage.

CAUTION:

Due to the heavy weight of BYD B-Box 12.8, please use strong packaging and safety protection equipment during transportation, to ensure safety and avoid accidental damage.

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3 Technical parameters

When B-BOX works in different temperatures, the charge and discharge current will be adjusted automatically. For detailed parameter settings, please refer to the table below:

Parameter setting of charge current in various temperature

Protect temp./ Resume temp.(℃)

Normal current(A)

-7~2

0.06C*N

2~12

0.12C*N

12~50

0.7C*N

Remark:

1.Effective time is 2mins when changing from one temperature range to another.

2.N=B-Plus12.8 battery group quantity

Discharge current control with temperature

B-Box Pro 12.8

Battery type

Lithium Iron phosphate battery

Battery module

B-Plus12.8

Nominal battery energy

12.8

Output power (KW)

Max 12.0

Usable battery energy (KWh)(0.2C charge & discharge at @+25℃) (KWh)

12.2 Nominal voltage (V)

51.2

Ambient temperature Range (℃)

-10~+50

Communication

RS485/CAN

Cabinet net dimensions(W*D*H mm)(Without ground feet)

650* 550* 800

Net Weight (Kg)

175

IP level

IP20

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Protect temp./Resume temp.(℃)

Normal current(A)

-20~50/(-15-50)

0.7C*N

Remark:

1.N= B-Plus12.8 battery group quantity

4 Technical terms explanation

No.

Terms

Comment

Discharge

Battery output power for load

Charge

Battery power supply (such as DC charger)

Fully charged

Battery has been fully charged, SOC is 100%.

Idle

Battery is on status of neither charge nor discharge and has not been fully charged

Shutdown mode

Power off

SOC

State of Charge

Software

Hardware

Battery voltage

The voltage between B+/B-

Pack voltage

The voltage between P+/P-

Cell voltage

Single cell voltage

Failure

Battery or BMS is broken and unit needs replacement

Alarm

Battery will stop charging or discharging immediately

Protect

Battery stops charging or discharging (e.g. cell is over voltaged). Operation can resume at a later stage.

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5 Product overview

5.1 B-BOX System brief introduction

B-Box is the short name for battery box, the energy storage part in the electric power system of a household, and the B-box carries BYD’s lithium batteries offering excellent performance. There are 2 pcs batteries modules in each box, and the box supports parallel connection to expand capacity from 12.8KWh to 409KWh, which can meet various capacity requirement for customers.

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Internal drawing

External drawing

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Structure dimension drawing

5.2 B-BOX configuration table

No.

Component

Name

Description

Cabinet

B-Box Cabinet

The Cabinet is used to house the B-Plus 12.8 and provide DC output (Each cabinet can install max 1 set of B-Plus12.8)

Battery

B-Plus12.8

Battery module with 51.2V 250Ah, BYD’s P/N is: 4S-T.

BMS

BMS48250

Battery management system. Manages battery and sends battery information to BMU.

BMU

Battery management unit. Provides communication with external equipment.

Configuration list

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5.3 B-BOX System diagram

System diagram

5.4 General introduction of BMU

BMU is the battery management unit installed in the cabinet; its function is to manage the battery’s charge and discharge, collect information from the battery and report to the inverter.

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Main functions:

✓ CAN /RS485 communication with inverter ✓ RS485 communication with battery/BMS ✓ Dry contact terminal ✓ Other communication interfaces for maintenance ✓ Charge and discharge management

5.5 General introduction of BMS48250

B-Plus is the commercial name of BYD’s U3A1-50P-A backup battery with 51.2V & 50Ah which is designed for energy storage applications. The B-Plus 12.8 is an integrated battery which consists of shell, BMS and

cells.

BMS overview

Display and communication interface

No.

Interface

Mark

Function

③ ① ②

④ ⑤ ⑥

⑦ ⑩ ⑨

⑧

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①

B+

Connects battery’s positive cable to power the BMS

②

B-

Positive terminal of BMS

③

P-

Negative terminal of BMS

④

SOC LED

SOC

Indicates state of charge of battery

⑤

RUN LED

RUN

Indicates the Plus system is running

⑥

ERR LED

ERR ADDR

Indicates error status

⑦

Alarm LED

Alarm

Indicates alarm status

⑧

RJ45 terminal

RS232/RS485

Communication ports

⑨

Address

ADDR

When parallel connection, address needs setting

⑩

Reset

RESET

Battery activity when no external power/add on battery.

5.6 Operating environment

Operating environment parameters

No.

Item Requirement

Unit

Remark Min.

Typical

Max.

Discharging temperature

-20

℃

Charging temperature

-10

℃

Relative humidity

95 % non-condensing

Absolute humidity

0.26

g/m3

Elevation

2000 - m

IP level

5.7 BMS address switch introduction

After finishing the battery installation, installers should setup the battery address through the “ADDR” switch.

“ADDR” switch introduction: Function: Communication between battery and BMU. The BMU will communicate with external

equipment when using CAN communication.

DIP switch definition:

There are 6 bit switches, keeping the switch down it means ”0”, turn up the switch to “ON” means

“1”.

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Address: 000000 Address:100000

For example: when two battery are used, “ADDR” setting is:

No.1 battery address: 100000 No.2 battery address: 010000

Please refer to the configuration list in Appendix1.

Notice: Make sure of the highest address possible between BMS connection and the BMU when

communicating with the inverter.

6 Cleaning and maintenance

6.1 Cleaning

Periodic cleaning is recommended for the B-BOX system. If the enclosure is in a dirty condition, please use a soft and dry brush or a vacuum to remove the dirt. Do not use liquids such as solvents, abrasives or corrosive liquids in the enclosures.

6.2 Maintenance

The B-BOX should be installed in a position with a temperature range of -10℃～+50℃ and where the humidity is less than 80%.The load-bearing of the battery’s packaging is less than 300Kg, so stacking more

than 7 modules is not recommended.

Storage parameters under different storage conditions-1

Storage

environment

temperature

Relative humidity

of storage

environment

Storage

time

SOC

Below -20℃

prohibit

-20~25℃

5%~70%

≤12 months

30%≤SOC≤60%

CAUTION:

When users need to clean the B-BOX, please switch off the system firstly.

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25~35℃

5%~70%

≤6 months

30%≤SOC≤60%

35~45℃

5%~70%

≤3 months

30%≤SOC≤60%

Above 45℃

prohibit

When SOC is less than 1%, the module will be damaged after several days if it’s not charged in time.

Storage parameters under different storage conditions-2

Storage environment temperature

Storage time

-20~25℃

≤

15 days

25~45℃

≤

7 days

7 Resolve special situations

7.1 Battery over discharged maintenance

In the case of power cuts, continuous rainy days etc, the battery may over-discharge. It will still provide limited energy, but users should pay attention to the backup time of the battery.

7.2 Force Majeure

Catastrophic accidents, including lightning, floods, earthquakes, fires and other natural disasters can bring unpredictable damage to the whole system.

8 BOX CONFIGURATION LIST with different inverters

8.1 B-BOX configuration list with SMA Sunny Island-On/Off grid

1 Phase on Grid

Inverter Type

B-Box 12.8

Cabinets

SI 3.0M

≥1

SI 4.4M

≥1

SI 6.0H

≥1

SI 8.0H

≥1

Remark: Maximum B-Box12.8 quantity is 32.

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3 Phase on Grid

Inverter Type

B-Box 12.8

Cabinets

SI 3.0M

≥3

≥1

SI 4.4M

≥4

≥1

SI 6.0H

≥4

≥1

SI 8.0H

≥4

≥1

1 Phase off Grid

Inverter Type

B-Box 12.8

Cabinets

SI 3.0M

≥3

≥1

SI 4.4M

≥3

≥1

SI 6.0H

≥5

≥2

SI 8.0H

≥5

≥2

3 Phase off Grid

Inverter Type

B-Box 12.8

Cabinets

SI 3.0M

≥8

≥2

SI 4.4M

≥8

≥2

SI 6.0H

≥12

≥3

SI 8.0H

≥12

≥3

Remark: Maximum B-Box12.8 quantity is 32.

8.2 B-BOX configuration list with GOODWE ES-On/Off grid

1 Phase on Grid

Inverter Type

B-Box 12.8

4.6kW

≥11

1 Phase off Grid

Inverter Type

B-Box 12.8

4.6kW

≥1

Remark: Maximum B-Plus quantity is 32, Cabinet quantity is 8.

8.3 B-BOX configuration list with GOODWE BP- On grid

1 Phase on Grid

Inverter Type

B-Box 12.8

This configuration is only for self consumption applications.

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2.5kW

≥1

Remark: Maximum B-Plus quantity is 32, Cabinet quantity is 8.

8.4 B-BOX configuration list with Solax - On grid

1 Phase on Grid

Inverter Type

B-Plus 2.5

Cabinet

SK-SU 3000

≥1

SK-SU 3700

≥1

S K-SU 5000

≥1

9 Normal issues and solutions

9.1 Normal alarm and solution display on SMA Sunny Island SRC

SMA SRC

Reason

Solution

F221

External Alarm-Invalid Bat Type

Reset battery type to "Li" on SRC.

F920(XA01General)

1.All the batteries fail to communicate at the same time

2.BMU and battery fail to communicate via RS485

1.Inspect whether the RS485 communication cable has been connected correctly and securely

2.Inspect DIP switch settings according to the setting of DIP switch guidance in user manual

3.Change BMU in cabinet

F930(XA11Short)

External Alarm - Short circuit

1.Power off;

2.Inspect short connection of cable between P+ and P-

3.If short connection is confirmed, please reconnect cable correctly

4.Restart battery

F952

External Alarm – Ext BMS Timeout

1.Check the CAN communication, make sure it is connected properly

2.Change BMU

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W936(XW01General)

External Warning - General

1.Inspect whether the RS485 communication cable has been connected correctly and reliability

2.Inspect the setting of DIP switch according to the Address setting guidance

W937(XW02DcHiVolt)

External Warning - Battery High Voltage