BlauHoff BLH-5KW Battery LFP Battery for Home Energy Storage System User Manual

BLH-5KW Battery LFP Battery for Home Energy Storage System
User Manual

BLH-5KW Battery LFP Battery for Home Energy Storage System

Dear customer,
This is your BlauHoff BLH-5KW Battery LFP battery for the home energy storage system. We provide safe, well-designed, and high-performance standard LFP battery packs for you. The battery pack is compact, easy to install, free of maintenance, and used as the building block of energy storage systems by assembling in parallel. It is widely applied in home applications, small commercial and industrial energy storage systems as well as Telecom stations.
This manual contains all the information necessary to install, use and maintain the LFP battery. We kindly ask you to read this manual carefully before using the product.
This manual is meant for the installer and the user of the LFP battery.
Only trained and qualified staff may install and perform maintenance on the LFP battery.
The boundaries of its use, as described in this manual should be kept in mind. The LFP battery may not be used in medical or aviation-related applications. The LFP battery may not be used for any purposes other than described in this manual. Using the LFP battery for any other purpose will be considered improper use and will void the warranty of the product. BlauHoff cannot be held responsible for any damage caused by improper, incorrect, or unwise use of the product. Read and understand this manual completely before using the product. During the use of the product, user safety should always be ensured, so installers, users, service personnel, and third parties can safely use the LFP battery.
This is the original manual, keep it in a safe location! Please consult info@blauhoff.com for the latest version of all manuals.

Before Using

Read and understand the following instructions:

warning

1. This equipment may only be installed, operated, and maintained by trained and qualified staff.
2. The local safety regulations and relevant operating procedures must be observed during the installation, operation, and maintenance of the equipment, otherwise the equipment may be damaged. The safety precautions mentioned in the manual are only intended to supplement of local safety regulations.

Caution

1. Do not dispose of batteries In a fire. The batteries may explode.
2. Do not open or mutilate batteries. Released electrolyte is harmful to the skin and eyes. It may be toxic.
3. A battery can present a risk of electric shock and burns by high short-circuit current.
4. Failed batteries can reach temperatures that exceed the burn thresholds for touchable surfaces. The following precautions should be observed when working on  batteries: a) Disconnect the charging source before connecting or disconnecting battery terminals;
   b) do not wear any metal objects including watches and rings;
   c) do not lay tools  or metal parts on top of batteries; and in addition, when the battery maintenance cannot be performed by an ordinary person, the following applies) use tools with insulated handles;e) wear rubber gloves and boots;

If determine it the battery is other intentionally or in between by grounded contact with any part of a grounded battery can result in electric shock and burns by high short-circuit current. the risk of such hazards can be reduced if the ground is removed during installation and maintenance by a skilled person.

• before moving or reconnecting the running system. the power must be off and the system should be shut down, otherwise, there will be a risk of electric shock.
• Do not expose the Li-ion battery to the heat of the fire in case of fire, place using a dry powder fire extinguisher.
• Do not dismantle any part of the system without contacting bytes or bytes authorized technical engineer. system failure caused by such will not be covered by the warranty.

Danger

1. Keep the Li-ion battery away from water, dust, and contamination, otherwise, it may cause an explosion or other dangers and may even lead to personal injury.
2. Do not short-circuit the Li-ion battery.
3. Observe the plus (+) and minus (-) marks on the Li-ion battery and equipment and ensure correct use. Do not reverse-connect the Li-ion battery.
4. Do not dismantle, crush, puncture, open, or shred the Li-ion battery.
5. Before moving or reconnecting the running system, the power must be off and the system should be shut down, otherwise there will be a risk of electric shock.
6. Do not expose the Li-ion battery to heat or fire. In case of fire, please use a dry powder fire extinguisher.
7. Do not dismantle any part of the system without contacting PYTES or PYTES authorized technical engineers. System failure caused by such will not be covered by the  warranty

Specifications

Table 1-1 Battery Pack Specifications

50℃
Certificates| UL1973, IEC62619 / UN38.3
Storage Temperature| Within 1 month: -20~55°C
1-3months: -20~35°C
3-12months: 20~25°C

1.1 Product standard configuration

(CAN/RS-485/RS232), 2 Link ports, LED power indicator and insulated coating metal case.|
Power Cable| 1set| Connect battery to battery; 0.2m; Positive and negative|
Communicate Cable| 1pcs| Connect battery to battery; 0.2m; CAN or RS485 communicate|
Earthing cable| 1pcs| 1m|

1.2 BMS function

Interface and protection functions

2.1 Battery front panel schematic

2.2 Components

activated by the “SW” key or external power supply; when switched to “OFF”, the system is off.
3| Soft start switch| SW| Press and hold this button for 1 second while the switch key is “ON” to enter Start or Sleep mode
4| DIP switch| ADD| Select the match manufacturer, see the match list(appendix A)
5| Running lights| RUN| Green lights. The lights flash when Standby. The lights are constantly on when charging. The lights flash when
discharging.
Alarm indicator| ALM| Red light. The lights flash when the Alarm. The lights are constantly on when protected.
Capacity indicator| CHARGE| A total of 6 green lights showing
battery capacity, each
representing 16.7% of SOC.
6| External CAN communication port| CAN| Communication with external devices
7| External RS-485 communication port| RS485| Communication with external devices
8| Cascade terminal| Link Port| Used for master-slave cascade communication. Connected with a standard direct-connected network cable, the master is connected to PORT1, and the slave is connected to PORT0.
9| Input and output interface  (negative)| | Negative input and output interface
10| Input and output interface (positive)| | Positive input and output interface

Operating Environment

✧ Battery operating environment requirements:
✧ Operating Temperature: -10℃~55℃
✧ Relative Humidity: 20%-80%, no condensation
✧ Altitude: ＜4000m
✧ Site environment requirements: Keep away from the heat source, avoid direct sunlight, no corrosive gas, no explosive gas, no insulating gas, no insulating conductive dust.
✧ Installed in a cabinet that shall not be opened without a tool or
✧ install in a restricted access area.

Packaging, transportation, and storage requirements

4.1 Transportation
Always check all applicable local, national, and international regulations before transporting an LFP battery.
During transportation, protected the battery from severe vibration, shock, or squeezing during transportation, as well as prevents sun and rain.
During the loading and unloading process, the battery should be handled lightly and protected against falling, rolling, and heavy pressure.

4.2 Storage
Follow the storage instructions in this manual to optimize the lifespan of the LFP battery during storage. If these instructions are not followed and the LFP battery has no charge remaining when it is checked, consider it to be damaged. Do not attempt to recharge or use it. Replace it with a new LFP battery.
See previous storage temperature conditions. The self-discharge of the LFP battery is 1-2% per month. Keep the battery SOC to 40%-60% during storage. Disconnect the LFP battery from all loads and, if present, the charging device. Store the battery in a cool and dry place without direct sunshine. Keep the battery away from corrosive substances,  inflammable and explosive material as well as hazardous gases. For long-term storage (＞ 6 months), charge the LFP battery to more than 80% of its rated capacity before storage. The battery needs to be recharged every 6 months to more than 80% of the rated capacity.

40%-60% during storage. Disconnect the LFP battery from all loads and, if present, the charging device. Store the battery in a cool and dry place without direct sunshine. Keep the battery away from corrosive substances, inflammable and explosive material as well as hazardous gases. For long-term storage (＞ 6 months), charge the LFP battery to more than 80% of its rated capacity before storage. The battery needs to be recharged every 6 months to more than 80% of the rated capacity.

Installation and configuration

5.1 Installation Preparation
5.1.1 Safety Requirements

Only those who have been trained in the power system and have a good knowledge of the power system are allowed to install the device.
Always observe local safety regulations and the safety requirements listed below during the installation process.
Before installing or removing the device, make sure that the power system is not powered and that the battery device is turned off.
Distribution cabling should be reasonable and with protective measures to avoid being touched during operation.

5.1.2 Checking the operating environment
The operating environment should meet the requirements described in Chapter 3, “Operating Environment”. Otherwise, it needs to be adjusted and re-examined.

5.1.3 Tools
The tools that may be used are shown in Table 5-1.

Table 5-1 Tool

Tools

Screwdriver (Slotted, Phillips)| Multimeter
Wrench| clip-on ammeter
Diagonal pliers| Insulating tape
Thermometer| Pliers
Anti-static wrist ring| Clip Pliers
Tapes| Strippers

5.1.4 Technical preparation
Electrical interface settings:
If the battery is connected to the user device directly, please check:

✧ Whether the DC charging interface of the energy storage inverter meets the charging voltage and current requirements in Table 1-1 Battery Pack Specifications.
✧ Whether the power of the electrical equipment matches the parameters listed in “Table 1-1 Battery Pack Specifications”; Security check:

Fire-fighting equipment such as portable dry powder fire extinguishers should be available near the equipment. Do not place dangerous materials such as flammable or explosive ones near the battery.

5.2 Unpacking
✧ When the battery arrives at the installation site, it must be loaded and unloaded properly and prevented from direct sunshine and rain. Before installation, check if there is  any component missing according to the packing list attached in the packing box and check whether the box appearance is intact;
✧ Carefully handling during the unpacking. Protect the insulated coating on the case surface;
✧ Check the LFP battery for damage after unpacking. If there is any damage, contact BlauHoff or your reseller.

5.3 The preparatory work

1. Make sure the POWER buttons of all batteries are OFF.
2. Ensure the charging voltage of power supply equipment is DC57.5±0.1V;
3. All power supplies should be off.

5.4 Installation
5.4.1 Install the battery
The BLH-5KW can be installed either vertically or horizontally. In this chapter, it’s main instructions for horizontal installation such as: installation in a 19-inch cabinet.  Vertical installation is similar. All equipment must be placed steadily during installation.

5.4.2 Connect Ground cable
Unscrew the screw at the grounding hole on the front panel of the battery, wrap the ground cable around the screw, and tighten it with a screwdriver. Connect the other end of the ground cable to a reliable ground point.
External Bi-polar over current protection devices and Bi-polar external isolator shall be equipped
The minimum diameter must be >10awg

Note: The grounding resistance should be less than 0.1Ω.

5.4.3 Connecting the power cable
Before connecting the power cable, connect and disconnect the cable to identify the positive and negative terminal, then make a mark respectively. After the cable is connected,  measure whether there is a short-circuit or reverse connection.
Select the correct line based on your load by reference to the table below

AWG

| Area| Standard Current| Max. current
---|---|---|---
(kcmil)| (mm²)| （ A ）| （ A ）
5| 33.1| 16.8| 66.2| 75.5
6| 26.3| 13.3| 52.5| 59.9
7| 20.8| 10.5| 41.6| 47.5
8| 16.5| 8.37| 33| 37.7
9| 13.1| 6.63| 26.2| 29.8
10| 10.4| 5.26| 20.8| 23.7

It should be >10 AWG.
Connecting the power cables:

(1) Power cable connection instructions of Single-Rack:

✧ Single battery:
✧ Connect the positive and negative poles of the battery to the positive and negative terminal of the DC port of the energy storage inverter (or the junction box) with a red and black cable respectively.
✧ Multiple batteries (Max number 8):
The connection between batteries, as well as between the battery and ESS inverter are parallel. First, connect the two positive terminals of adjacent batteries with the red cable; and the two negative terminals of adjacent batteries with the black cable; then connect the positive and negative terminal of the battery with the positive terminal of the  DC port of the energy storage inverter (or the junction box) with a red and black cable respectively;
The capacity can be increased by connecting the batteries in parallel, but due to the limitations of BMS and the power cable we supply, only two batteries can be connected in parallel and a bus bar should be used for connecting them together.

Warning: Batteries connected in series are forbidden, high voltage would lead to hazard shock.

2. Power cable connection instructions of Multi-Rack:
Collect the positive and negative power cables respectively by the bus bar or junction box, then connect two racks in parallel.
The length, thickness, material, and resistance of the cables connected in parallel must be the same.

Note: When the cable is inserted into the positive and negative terminals of the battery and “Click”, the cable is firmly connected.
Before pulling out the cable, press the small button next to the terminal.
When multiple batteries are connected in parallel, in order to reduce the influence of the circular current, the overall positive and negative output cables can be connected from different batteries.

Figure 5-1 Schematic diagram of battery connection

Note: The battery must be placed in a locked cabinet or room, a 5cm cooling gap is reserved when installing the battery, and each layer of the battery cabinet should have a load capacity of more than 100kg.

5.4.4 Connecting communication cables
Single battery: Choose the port to be inserted according to the communication protocol (RS485/CAN/RS232) between the battery and ESS inverter, then insert the  communication cables to the port;
Multiple batteries: The host and the slave communicate in cascade mode: one is the host and the rest are the slaves. Please refer to the following picture for the cascade connection. Users need to inset communication cables to relevant link ports between batteries and be aware that:

1. The host Link Port 0 must be kept free;
2. The end slave Link Port 1 must be kept free;

Note: The system may not be able to communicate if not follow the instruction.

Table 5-3 LED indications

Battery status| Protection / Alarm   Normal| RUN| ALM| Capacity LED| Descriptions
---|---|---|---|---|---
| | | | | | |
Shut down| | OFF| OFF| OFF| OFF| OFF| OFF| OFF| OFF| All off
Power-on| Normal| ON| ON| ON| ON| ON| ON| ON| ON| All light on one second at the same time.
Standby| Normal| Flash 1| OFF| OFF| OFF| OFF| OFF| OFF| OFF| Indication standby
Alarm| OFF| Flash 3| OFF| OFF| OFF| OFF| OFF| OFF| Battery low voltage
Charging| Normal|

Light

|

OFF

| Base on capacity|
Alarm| Light| Flash 3
Protection| OFF| Light| OFF| OFF| OFF| OFF| OFF| OFF| Stop charging, protect start
Discharge| Normal|

Flash 3

|

Flash 3

| Base on capacity|
Alarm| Flash 3| Flash 3|
Protection| OFF| Light| OFF| OFF| OFF| OFF| OFF| OFF| Stop discharge, protect start

Note: The flashing instructions, flash 1-0.25s light/3.75s off; flash 2-0.5s light/0.5s off; flash 3-0.5s light/1.5s off.

Communication

There are RS-232C, RS485, and CAN communication ports on the battery. The battery status can be obtained and the battery’s internal parameters can be modified via a host computer.

CAN
CAN communication Terminal (RJ45 port) follows CAN protocol, to output battery information.

RS485
RS485 Communication Terminal:(RJ45 port) follow RS485 protocol, to output battery information.

RS232
RS232 Communication Terminal:(RJ45 port) follow RS232 protocol, to upgrade the software and communicate with your PC.

Link Port 0,1
Link Port0,1 Communication Terminal:(RJ45 port) follow CAN/RS485 protocol, to communicate between multiple parallel batteries.

6.1 RS232 port
Default baud rate of RS-232C ports: 115200bps.

Table 6-1 RS232 Connector Pin Assignments

6.2 RS485 port and CAN port.
Default baud rate of RS-485 port: 9600bps
Default baud rate of CAN port: 500K

Table 6-2 RS485 and CAN Connector Pin Assignments

Pin number

| Serial|

CAN

---|---|---
1| RS485B| —
2| RS485A| GND
3| GND| —
4| —| CANH
5| —| CANAL
6| GND| —
7| RS485A| —
8| RS485B| —

Troubleshooting

Please refer to the troubleshooting methods mentioned below.
Please read the “Table 5 -3 LED indication” of this manual before troubleshooting to prevent false operations. For example, it doesn’t indicate the battery is faulty if the ALM  alarm red light on the front panel is blinking or constantly on. When there is an “alarm” indication, it usually works well and needs no troubleshooting. When there is a “protection” indication, the battery will work normally automatically after the “protection” status is released.

Warning: Do not repair the battery if no authorization from BlauHoff!

7.1 Unable to start

Press the POWER button to the  “ON” state and press the SW  button for 1 second, but the LED  indicator doesn’t respond or all the  LEDs are off after 1S.| 1. Confirm that the POWER the button remains in  the “ON” state;
2. Charge the battery correctly and observe if the battery can be charged properly.| 1. If the battery enters charging mode, the battery can return to normal after charging.
2. If not, please contact the local reseller or BlauHoff.

7.2 Unable to charge

1. Confirm that the battery is turned on;
2. Check the power cord. Confirm that the  power cables are correctly connected and the  charging circuit is correct;
3. Check the battery indicator LED to see if the battery is under the “Protection” state. If so,  unplug the battery power cord, find the cause of the protection, and fix the problem, then  restart the battery;
4. Check if the charging voltage meets the battery charging requirements. If not, adjust the power supply voltage to the proper range.| If the battery still does not charge properly after following the above steps,  please contact the local reseller or  BlauHoff.

7.3 Unable to discharge

turned on;
2. Check the power cables to ensure that they are properly connected.
3. Unplug the battery power cable and measure
the battery power output voltage. If the battery
voltage is too low, charge it immediately.
4. Check the battery indicator LED to see if the battery is in a “Protection” state. If so,  unplug the battery power cables, find the cause  of the protection, and fix the problem, then  restart the battery;| If the battery still does not discharge properly after following the above steps,  please contact the local reseller or  BlauHoff.

7.4 ALM indicator is always on
When the ALM indicator is constantly red and the other indicators are off, the battery is in the “Protection” state. When the condition-triggered protection is released, the battery will automatically return to normal operation. There are a few issues requiring immediate measures.

Check the power cables to ensure that they
are properly connected.
2. Check whether the charging voltage, charging/discharging current, battery/cell voltage, and temperature meet the relevant protection conditions, and release the  “protection” state to ensure that the voltage,  current, and temperature are within the normal working range.| If the battery protection state cannot be released, or the ALM indicator s  constantly on when the battery is properly charged after it is restarted, please contact your local reseller or BlauHoff.

7.5 Battery designation
EXAMPLE 1 –ICP200/1 50/150/[7S]E/0+50/75 would designate a battery composed of 7S connected prismatic Li-ion secondary cells, with a cobalt-based positive electrode.  Its cell maximum thickness is between 199 mm and 200mm, its cell maximum width is between 149 mm and 150 mm, and its cell overall height is between 149 mm and 150 mm. It is designed for a low discharge rate over a long period. Its low-temperature grade is 0°C. Its high-temperature grade is +50 °C. Its capacity after 500 cycles to rated capacity is between 75 % and 79 %.

EXAMPLE 2 —NR54/222[4P3S]H/-20+50/80 would designate a battery composed of 4P- 3S connected cylindrical Li-ion secondary cells, with a nickel-based positive electrode. Its cell maximum diameter is between 53mm and 54 mm, and its cell overall height is between 221 mm and 222 mm. It is designed for a high discharge rate. Its low-temperature grade is -20 °C. Its high-temperature grade is +50 C. Its capacity after 500 cycles to rated capacity is between 80 % and 84%.

Warranty Card

Battery model| | Inverter brand/model|
Battery quantity| | Inverter quantity|
Battery using time| | Inverter using time|
PV arrays power| | on-grid/off-grid|
Problem description (Including fault tine, weather, condition, Inverter error code. etc
Photos of the battery wiring
Photos of Inverter wiring and panels

The right of interpretation belongs to BlauHoff.

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