BYD Battery-Box Premium Quick Start Guide

1. Scope of Delivery

The following components are included in the delivery:

• 1x BCU (Battery Control Unit)
• 1x Base
• 3x Power Cables (6 mm²)
• 1x Communication Terminal Connector
• 1x Waterproof Plug
• 4x M4x14 Countersunk Screws
• 2x M6 Bolts and Nuts
• 1x Terminal Resistor
• 1x Hanger (BCU Part)
• 1x Hanger (Wall Part)
• 2x Expansion Anchor Bolts (M8x40)
• 1x Documents package
• 1x PE-terminal (10 mm²)
• 1x C1 HVS Module or 2x C2 HVM Module (depending on model)

2. Additionally Required Installation Materials

• 1x M4x14 Countersunk Screw
• 1x DC Cable (6 or 10 mm², double insulated, external diameter: 6.3-7.6 mm)
• 1x Expansion Anchor Bolt (M8x40)
• 1x Cat5e Shielded Network Cable (RJ45 connector)
• 1x PE Cable* (10 mm²)
• 1x Heat Shrink Tubing

*Note: If the maximum current of the connected inverter is no more than 40 A, a grounding cable with a cross-sectional area of 6 mm² is also acceptable.

3. Tools

• Network Wire Clamp
• Marker
• Phillips Screwdriver Bit
• Flat-head Screwdriver
• Torque Wrench
• Wire Stripper
• Hydraulic Plier YQK-70
• Wrench
• Heat Gun
• Cylinder Screwdriver
• Connector Wrench
• Tape Measure
• Rubber Mallet
• Drill
• Crimping Pliers

4. Installation Location

Environmental requirements for the installation location:

• Maximum Temperature: +50 °C
• Minimum Temperature: -10 °C
• Relative Humidity: 5% ~ 95%

5. Connection Limitation

This section outlines the limitations for connecting battery modules and towers.

Module Limits per Tower:

• HVS Series: Up to 5 modules
• HVM Series: Up to 8 modules

Parallel Connection of Towers:

The number of towers that can be connected in parallel depends on the inverter model and configuration. For example, some configurations allow up to 3 towers in parallel.

Specific diagrams illustrate these limitations, showing configurations like N modules per tower and parallel tower connections. For instance, one diagram shows a single tower configuration, while others illustrate multiple towers connected in parallel to inverters, with specific cable length considerations.

Refer to the inverter's operating manual for specific parallel connection compatibility and requirements.

6. Installation

Follow these steps for the physical installation:

1. Mount Wall Hanger: Securely attach the Wall Hanger (F) to the wall using Expansion Anchor Bolts (G). Ensure it is level and can support the weight. Use a torque wrench for proper tightening (e.g., 8 Nm for M6 bolts).
2. Attach BCU Hanger: Mount the BCU Hanger (D) onto the BCU (A) using M4x14 Countersunk Screws (J) with a torque of 2 Nm.
3. Mount BCU: Carefully lift the BCU assembly and hang it onto the Wall Hanger (F).
4. Install Battery Modules: Stack the Battery Modules (C1 for HVS or C2 for HVM) onto the BCU. The maximum number of modules per tower is limited (e.g., up to 5 for HVS, up to 8 for HVM). Ensure modules are properly seated and aligned. Note the weight of each module (e.g., 38 kg).
5. Connect Power Cables: Connect the Power Cables (J) between modules and to the BCU. Use the specified torque (e.g., 10 mm, 8 Nm).
6. Connect Communication Terminals: Connect the communication cables between modules and to the BCU using the Communication Terminal Connector.
7. Connect PE Cable: Connect the PE (Grounding) cable to the designated terminal.
8. Install Terminal Resistor: Install the Terminal Resistor (T) as shown in the connection diagrams.

Model and Voltage Mapping:

Operating Temperature: -10°C to 50°C.

Manufacturer: Shenzhen BYD Electronics Co., Ltd.

7. Connection Diagram

Diagrams illustrate single and multiple tower configurations.

Single Tower Connection:

Connects the Battery-Box system to an inverter. Includes connections for PE Cable, DC Cable (P+, P-), and Data Cable (e.g., CAN, RS485) to the inverter's COM port. A Terminal Resistor is used in the data port.

Multiple Towers Connection:

Shows how to connect multiple battery towers in parallel. One tower acts as the Master, and others as Slaves. Connections include IN (for incoming data/power), INV (to inverter), P+ (DC+), P- (DC-), and ETH (network). Terminal resistors are used in unused RJ45 ports.

Note: Parallel connection is not applicable to SMA Sunny Boy Storage 3.7-6.0. Refer to the inverter's operating manual for connecting up to three battery systems.

The length of power cables from each tower to the combiner box should be the same.

The length of the power cable between each battery tower and the inverter should be less than 20 m.

8. Electrical Connections

NOTE: Before making any electrical connections, ensure the air switch on the BCU is OFF.

8.1 PE Connection (Grounding)

Connect the PE cable to the grounding terminal on the BCU. Ensure the cable length (L) is E + (2~3) mm, where E is the stripped length of the cable. Use appropriate connectors (e.g., SC10-5).

8.2 DC Connection

For 6 mm² terminal:

• Strip the DC cable end to 10-12 mm.
• Use a hydraulic crimping tool (YQK-70) with the correct die for 6 mm² copper terminals.
• Ensure the crimped terminal has no burrs and the wire core is not exposed. The crimping should not be higher than the right flange of the terminal.
• Align the terminal's elastic piece with the plastic case opening before insertion.
• Pull the terminal to confirm a secure connection.

For 10 mm² terminal:

• Strip the DC cable end to 11-13 mm.
• Use the hydraulic crimping tool (YQK-70) with the correct die for 10 mm² copper terminals.
• When crimping 10 mm² terminals, the crimping pliers die must not completely cover the viewing hole.
• Ensure proper crimping without damage or wire core leakage.
• Align the terminal's elastic piece with the plastic case opening before insertion.
• Pull the terminal to confirm a secure connection.

Cable Preparation:

• Use double-insulated DC cables with an external diameter of 6.3-7.6 mm.
• Ensure the cable cross-section (6 or 10 mm²) matches the inverter's requirements.
• Keep 15-20 cm of the cable coming out of the power cable coupler horizontal to reduce cable stress.
• Trim burrs after stripping; they should not exceed the right flange of the terminal.

8.3 Connecting the Data Cable to an Inverter

Use a minimum CAT5e shielded network cable, with a maximum length of 20m.

Option a: Connect the data cable from the inverter's CAN L/H or BMS port to the corresponding port on the BCU (e.g., CAN H, CAN L, RS485 A/B).

Option b: Connect the data cable from the inverter's BMS port to the BCU's BMS port.

Refer to Section 13 for connection diagrams with different inverters.

8.4 Connecting the Data Cable to a Router

Connect a CAT5e shielded network cable from the BCU's ETH port to a router or network switch. This connection is recommended for remote monitoring and updates.

8.5 Installing the Terminal Resistor

Install the Terminal Resistor (T) into any unused RJ45 ports on the BCU or other devices in the communication chain. Cover unused ports with the built-in waterproof cover and tighten.

9. Configuration

Configuration is performed using the BYD Be Connect 2.0 mobile application.

Privacy Policy:

Upon first use, review and agree to the Be Connect 2.0 Privacy Policy to proceed. The app collects device information (device_id, MCC, MNC, etc.) for service functionality.

Connecting to Battery WiFi:

1. Download and install the Be Connect 2.0 app.
2. Connect your mobile device to the battery's WiFi network (WLAN name: BYD-XXXX, Password: BYDB-Box SN: [Serial Number]).
3. The battery WiFi network may indicate "no internet access"; connect anyway.

System Configuration:

1. Open the Be Connect 2.0 app.
2. The app will prompt to configure the system. Select "YES" to proceed.
3. Refer to the compatible inverter list or minimum configuration list before starting.
4. Set the Date and Time for the system (e.g., Jul-16, 2021 17:21).
5. The configuration process will guide you through setting up the inverter type and battery module quantities.

10. Switch ON/OFF Procedure

Follow these steps to safely switch the BYD Battery-Box system ON and OFF.

Switch ON Procedure:

1. Ensure all physical and electrical connections are complete and verified.
2. Turn ON the air switch on the BCU.
3. Turn ON the inverter according to its operating manual.
4. The battery system will initiate its startup sequence.

Switch OFF Procedure:

1. Turn OFF the inverter according to its operating manual.
2. Turn OFF the air switch on the BCU.
3. The battery system will power down.

Battery WiFi: The battery's WiFi connection will automatically shut off after five hours of inactivity. To reactivate it, press the LED button once for approximately one second or restart the system.

Configuration Details: During configuration, you will specify the inverter model (e.g., SMA) and the quantity of battery modules per tower (e.g., 4 HVS modules). Ensure configuration aligns with BYD's compatibility lists and operating manual.

11. Extension

To extend the battery system with additional modules:

Recommendation: Within 5 days before extension, fully charge the original system to 100% State of Charge (SOC) at least once.

Procedure:

1. Measure New Module Voltage: Measure the voltage (X) of the new battery module.
2. Determine Target SOC: Refer to the table below to find the target SOC (Y) corresponding to the measured voltage (X) of the new module.
3. Match Original Battery SOC: Charge or discharge the original battery system until its SOC is approximately equal to the target SOC (Y).
4. Add New Module: Connect the new battery module to the system.
5. Perform Configuration: After adding the module, perform the necessary system configuration via the Be Connect 2.0 app.

The table provides voltage ranges for HVS and HVM modules and their corresponding target SOCs for extension.

12. LED Status

The LED indicators on the BCU provide status information:

13. Communication Options with Inverters

NOTICE: Do not crimp the unused pins when making the communication cable between the battery and the inverter.

The "INV" port on the Battery-Box system is used for communication with inverters. Pin assignments vary by inverter manufacturer and model.

BYD Battery-Box Pin Designation:

1. SMA SBS 2.5/ 3.7/ 5.0/ 6.0

NOTICE: Parallel connection is not applicable to SMA Sunny Boy Storage 3.7-6.0. Please check the inverter Operating Manual on how to connect up to three battery systems.

2. SMA STP 5.0-10.0 SE

3. SMA SBSE 3.6 / 4.0 / 5.0 / 6.0

4. Kostal Plenticore Plus (G2)/ Plenticore BI (G2)/ Plenticore G3

5. Kostal Piko MP Plus

6. Kostal Piko BA

7. Kaco blueplanet hybrid 6.0-10.0 TL3

8. Kaco NH

9. Sungrow SH5.0_6.0_8.0_10RT

10. Sungrow SH3.0/ 3.6/ 4.0/ 5.0/ 6.0 RS

11. Fronius Symo Hybrid

12. Fronius Primo Gen24 Plus/ Symo Gen24 Plus

13. Ingeteam

14. Solis RHI-3P(5-10)K-HVES-5G

15. Solis S6-EH3P(3-10)K2-H/S6-EH3P(3-10)K-H-EU S6-EH3P(12-20)K-H/S6-EH3P(29.9-50)K-H

16. Deye SUN-(5-20)K-SG01HP3-EU-AM2

17. Deye SUN-29.9-50K-SG01HP3-EU-BM4

18. GE GEH 5.0/ 8.6/ 10-1U-10

19. Solplanet

20. Western CO HHS 3000-6000/ HBS 3000-6000

21. Western CO HHT 5000-12000/ HBT 5000-12000

22. Sosen SSE-HH3K-6K-P1-EU

23. GoodWe/ Viessmann/ Canadian Solar

24. Hoymiles

25. Afore AF(3-30)K-TH

Afore BAT Port Pin Assignment:

26. Maxhub PHN(5-10)KT-BH2

27. Kontron Solar SolBrid 10-3-2/10-3-4

14. Contact Information

For global service and support:

BYD Company Limited
Email: bboxservice@byd.com
Phone: +86 755 89888888-47175
Address: No.3009, BYD Road, Pingshan, Shenzhen, 518118, P. R. China
Website: www.bydbatterybox.com

Europe (EFT-Systems GmbH)
Email: service@eft-systems.de
Phone: +49 9352 8523999 / +44 (0) 2037695998(UK) / +34 91 060 22 67(ES) / +39 02 87368364(IT)
Address: Bruchtannenstr. 28, 63801 Kleinostheim, Germany
Website: www.eft-systems.de

Australia (Alps Power Pty Ltd)
Email: service@alpspower.com.au
Phone: +61 2 8005 6688
Address: 2/62 Belmore Road, Riverwood, NSW 2210
Website: www.alpspower.com.au