V-TAC OHS-100 Rechargeable Li-ion Battery System User Manual

V-TAC OHS-100 Rechargeable Li-ion Battery System

Specifications

Product Properties

• Size: Detailed dimensions available in the user manual
• Weight: Varies based on model

Performance Parameter

• Power Output: Refer to user manual for specific values
• Efficiency: High efficiency for optimal performance

Equipment Interface Instruction
The equipment interface is user-friendly and intuitive. Detailed instructions provided in the manual.

Battery Management System (BMS)
The BMS ensures safe and efficient battery operation. Features include:

• Protection mechanisms
• Alarm systems for alerts

Product Usage Instructions

Installation and Configuration
Preparation for Installation

1. Safety Requirement: Follow safety guidelines provided in the manual.
2. Environmental Requirements: Ensure proper environmental conditions for installation.
3. Tools and Data: Gather necessary tools and data as listed in the manual.
4. Technical Preparation: Familiarize yourself with the technical aspects of the installation process.
5. Unpacking Inspection: Verify contents upon unpacking.

Equipment Installation

1. Installation Steps: Follow step-by-step instructions for proper installation.
2. Battery Parameter Settings on the Inverter: Configure battery parameters as per guidelines.

Battery System Usage and Operation Instructions
Operate the battery system as per the user manual instructions for optimal performance and longevity.

Alarm Description and Processing
Familiarize yourself with alarm descriptions to promptly address any issues that may arise during operation.

FAQ

• Q: What should I do if I encounter an alarm?
  A: Refer to the user manual for specific alarm descriptions and troubleshooting steps. If unsure, contact customer support for assistance.

OHS-100 Rechargeable Li-ion Battery System
User Manual

 Introduction

Important Safety Instructions

Danger!

• Please do not put the battery into water or fire, in case of explosion or any other situation that might endanger your life.
• Please connect wires properly while installation, do not reverse connect.
• To avoid short circuit, please do not connect positive and negative poles with conductor on the same device.
• Please avoid any form of damage to battery, especially stab, hit, trample or strike.

Danger!

• Please shut off the power completely when removing the device or reconnecting wires during the daily use or it could cause the danger of electric shock.
• Please use dry powder extinguisher to put out the flame when encountering a fire hazard, liquid extinguisher could result in the risk of explosion.
• For your safety, please do not arbitrarily dismantle any component in any circumstances. The maintenance must be implemented by authorized technical personnel or our company’s technical support. Device breakdown due to unauthorized operation will not be covered under warranty.

Caution!

• Our products have been strictly inspected before shipment. Please contact us if you find any abnormal phenomena such as device outer case bulging.
•  The product shall be grounded properly before use in order to ensure your safety.
• To assure the proper use please make sure parameters among the relevant device are compatible and matched.
• Please do not mixed-use batteries from different manufacturers, different types and models, as well as old and new together.

Caution!

• Ambient and storage method could impact the product life span, please comply with the operation environment instruction to ensure device works in proper condition.
• For long-term storage, the battery should be recharged once every 6 months, and the amount of electric charge shall exceed 80% of the rated capacity.
•  Please charge the battery in 18 hours after it fully discharged or over-discharging protection mode is activated.
•  Formula of theoretical standby time: T=C/I (T is standby time, C is battery capacity, I is total current of all loads).

Brief Introduction

51.2V100AH lithium iron phosphate battery system is a standard battery system unit, customers can choose a certain number of 51.2V100AH according to their needs, by connecting series to form a larger capacity battery pack, to meet the user’s long-term power supply needs. The product is especially suitable for energy storage applications with high operating temperatures, limited installation space, long power backup time and long service life.

Product Properties
51.2V100AH energy storage product’s positive electrode materials are lithium iron phosphate, battery cells are managed effectively by BMS with better performance, the system’s features as below:

• The whole module is non-toxic, non-polluting and environmentally friendly;
• Cathode material is made from LiFePO4 with safety performance and long cycle life
• Battery management system with better performance, possesses protection function like over-discharge, over-charge, over-current, abnormal temperature.
• Self-management on charging and discharging, Single core balancing function.
• Intelligent design configures integrated inspection module.
• Flexible configuration, multiple battery modules can be in parallel for expanding capacity and power.
• Flexible configurations allow parallel of multi battery for longer standby time.
• Self-ventilation with lower system noise.
• Less battery self-discharge, then recharging period can be up to 10 months during the storage.
• No memory effect so that battery can be charged and discharged shallowly.
• With wide range of temperature for working environment, -10℃~ +55℃, circulation span and discharging performance are well under high temperature.

Product Specification

Size and Weight

Table 2-1 Device size

Product| Nominal Voltage
(V)| Nominal Capacity
(Ah)| Dimension
(mm)| Weight
(Kg)
---|---|---|---|---
OHS15K-100| 153.6| 100| 590420698| 161.4
OHS20K-100| 204.8| 100| 590420849| 207.0
OHS25K-100| 256| 100| 5904201000| 252.6
OHS30K-100| 307.2| 100| 5904201151| 298.2
OHS35K-100| 358.4| 100| 5904201302| 343.8
OHS40K-100| 409.6| 100| 5904201453| 389.4

Performance Parameter
Table 2-2 performance parameter

Technical Specification| 15KWH| 20KWH| 25KWH| 30KWH| 35KWH| 40KWH
---|---|---|---|---|---|---
Installation Mode| Stackable
Battery Type| LifePO4(LFP)
Module Energy(kWh)| 5.12
Module Nominal Voltage(V)| 51.2
Module Capacity(Ah)| 100
System Model| OHS15K-100| OHS20K-100| OHS25K-100| OHS30K-100| OHS35K-100| OHS40K-100
Battery Module Qty InSeries (Optional)| 3| 4| 5| 6| 7| 8
System Nominal Voltage(V)| 153.6| 204.8| 256.0| 307.2| 358.4| 409.6
System Nominal Capacity (KWh)| 15.36| 20.48| 25.60| 30.72| 35.84| 40.96
Usable Capacity(KWh)| 12.29| 16.38| 20.48| 24.58| 28.67| 32.77
Dimension (mm)| 590420698| 590420849| 5904201000| 5904201151| 5904201302| 5904201453
Weight (Kg)| 161.4| 207.0| 252.6| 298.2| 343.8| 389.4
Recommend Charge/Discharge Current (A)| 40
Communication| CAN
Ingress Protection| IP65
Altitude| ≤2000m
Cycle Life| 25±2°C,0.5C/0.5C,EOL70%≥6000
Monitoring Parameters| System voltage, Current, cell voltage, cell temperature, module temperature
SOC| Intelligent algorithm
Working Temperature| 0℃~45℃ Charge     -10℃ ~55℃ Dishrag
Storage Temperature| 0~35℃

Equipment Interface Instruction

This section details the front and back interface functions of the battery pack

Table 2-3 Interface Definition

CAN/485/RS232 interface definition

| PIN position| Color| Definition
---|---|---|---
RS485/CAN| PIN1| Orange/White| 485B1
PIN2| Orange| 485A1
PIN3| Green/White| GND
PIN4| Blue| CANH
PIN5| Blue/White| CANL
PIN6| Green| GND
PIN7| Brown/White| 485A2
PIN8| Brown| 485B2

Display

Battery Management System(BMS)

BMS Protection and Alarm

• Over Voltage Alarm/Protection in Charging:

• When total voltage or any battery cell voltage reaches the rated
  alarm value during charging stage, the alarm light will flash. When reaches the rated protection value, the alarm light will on, battery will stop charge. After total voltage or all cell voltage back to rated range, the protection is over

• Low Voltage Protection in Discharging :

• Battery system will stop supply power to the outside, when any battery cell voltage or total voltage is lower than the rated protection value during discharging, the over-discharging protection is activated. When the voltage of each cell back to rated return range, the protection is over.

• Over Current Protection in Charging:

• When the charge current ＞ 50A, BMS will stop output, after current lower than 50A, will start automatically.

• Over Current Protection in Discharging：

• When the discharge current is higher than 50A, BMS will stop output, after current lower than 50A, will start automatically.

• Low/Over temperature protection in charging：

• When battery’s temperature is beyond range of -0 ℃~+45 ℃during charging, temperature protection is activated, device stops charging.

• The protection is over when temperature back to rated working range.

• Low/Over temperature protection in discharging：

• When battery’s temperature is beyond range of -10℃~+55℃during discharging, temperature protection is activated, device stops supplying power to the outside.

• The protection is over when temperature back to rated working range.

• Short Circuit Protection：

• When the battery is activated from the shutdown state, if a short circuit occurs, the system starts short-circuit protection for 60 seconds.

• Self-Shutdown：

• When device connects no external loads and power supply and no external communication for over 72 hours, device will dormant standby automatically.

Installation and Configuration

Preparation for installation

1. Safety Requirement
   This system can only be installed by personnel who have been trained in the power supply system and have sufficient knowledge of the power system.
   The safety regulations and local safety regulations listed below should always be followed during the installation.

   • All circuits connected to this power system with an external voltage of less than 500V must meet the SEHV requirements defined in the IEC60950 standard.
   • If operating within the power system cabinet, make sure the power system is not charged. Battery devices should also be switched off.
   • Distribution cable wiring should be reasonable and has the protective measures to avoid touching these cables while operating power equipment.
   • when installing the battery system, must wear the protective items below:

2. Environmental requirements

   • Working temperature: 0℃ ~ +45℃
   • Charging temperature range is 0℃~+45℃,
   • Discharging temperature range is -10℃ ~+55℃
   • Storage temperature: 0℃~ +35℃
   • Relative humidity: 5% ~ 85%RH
   • Elevation: no more than 2000m
   • Operating environment: Indoor installation, sites avoid the sun and no wind, no conductive dust and corrosive gas.
   • And the following conditions are met:
   • Installation location should be away from the sea to avoid brine and high humidity environment.
   • The ground for product arrangement shall be flat and level.
   • No flammable explosive materials near the installation site.
   • The optimal ambient temperature is 15℃~ 30℃
   • Keep away from dust and messy zones

3. Tools and data
   Tools and meters that may be used are shown in table 3-1. Table 3-1 Tool instrument

NAME

Screwdriver (Slotted, Phillips)| Multimeter
Torque wrench| Clamp current meter
Diagonal pliers| Insulation tape
Pointed nose pliers| Temperature meter
Pliers to hold the wire| Anti-static bracelet
Stripping pliers| Cable tie
Electric drill| Tape measure

Technical preparation
Electrical interface check
Devices that can be connected directly to the battery can be user equipment, power supplies, or other power supplies.

• Confirm whether the user’s PV power generation equipment, power supply or other power supply equipment has a DC output interface, and measure whether the DC power output voltage meets the voltage range requirements in Table 2-2.
• Confirm that the maximum discharge current capability of the DC power interface of the user’s photovoltaic power generation equipment, power supply or other power supply equipment should be  higher than the maximum charging current of the products used in
• Table 2-2.
• If the maximum discharge capacity of the DC power interface of the user’s photovoltaic power generation equipment is less than the maximum charging current of the products used in Table 2-2, the
• DC power interface of the user’s photovoltaic power generation equipment shall have a current limiting function to ensure the normal operation of the user’s equipment.
• Verify that the maximum operating current of the battery-powered user equipment (inverter DC input) should be less than the maximum discharge current of the products used in Table 2-2.

The security check

• Firefighting equipment should be provided near the product, such as portable dry powder fire extinguisher.
• Automatic fire fighting system shall be provided for the case where necessary.
• No flammable, explosive and other dangerous materials are placed beside the battery.

Unpacking inspection

• When the equipment arrives at the installation site, loading and unloading should be carried out according to the rules and regulations, to prevent from being exposed to sun and rain.
• Before unpacking, the total number of packages shall be indicated according to the shipping list attached to each package, and the case shall be checked for good condition.
•  In the process of unpacking, handle with care and protect the surface coating of the object.
• Open the package, the installation personnel should read the technical documents, verify the list, according to the configuration table and packing list, ensure objects are complete and intact, if the internal packing is damaged, should be examined and recorded in detail.

Packing list is as follows:

• Equipment installation
• Installation Steps

Step 1 Mechanical Installation

Installation step:

• Step 4: Install side fastening screws
• Step 3: Install the High voltage battery cluster control box
• Step 2: Install the Battery module
• Step 1: Install the Battery module base

Step 2 Electrical installation

Connect with inverter

Battery parameter settings on the inverter

• If your inverter do not have communication function with OHS-100 battery pack, please set inverter follow next data.
• Max Charging(module) Voltage: 56.0V*N
• Shut Down(cut off) Voltage: 49.0V*N（SOC20%）
• Shut Down(cut off) SOC: 20%
• Restart Voltage: 51.2V*N
• Max Charge Current: 50A
• Max Discharge Current: 50A

Installation and Configuration

Battery system usage and operation instructions
After completing the electrical installation, follow these steps to start the battery system.

1. Open the BMS on/off, wait the screen open and show battery with normal status.

2.  After the LCD screen show battery with normal status, open the air switch.

3. After pressing the power button, if the LCD screen show battery with ALM status, please refer to the “4.2 Alarm description and processing “. If the
   failure cannot be eliminated, please contact the dealer timely.

4. Use a voltmeter to measure whether the voltage of the circuit breaker battery access terminal is higher than48VN, and check whether the voltage polarity is consistent with the inverter input polarity. If the circuit breaker battery input terminal has a voltage output and is greater than 48VN, then the battery begun to work normally.

5. After confirming that the battery output voltage and polarity are correct, turn on the inverter, close the circuit breaker.

6. Check if the indicator of the inverter and battery connection (communication indicator and battery access status indicator) is normal. If it is normal, successfully complete the connection between the battery and the inverter. If the indicator light is abnormal, please refer to the inverter manual for the cause

Alarm description and processing

• When protection mode is activated or system failure occurred, the alarm signal will be given through the working status indicator on the front panel of the BSM48100HP. The network management can query the specific alarm categories.
• If the fault such as single cell over voltage, charging over-current, under-voltage protection, high-temp protection and other abnormalities which affects the output, please deal with it according to Table 4-1.

Table 4-1 Main alarm and Protection

Charge state

| Over-current| RED| Stop charging and find out the cause of the trouble
High temp| Red| Stop charging
Discharge state| Over-current| Red| Stop discharging and find out the cause of the trouble
High temp| Red| Stop discharging and find out the cause of the trouble
Total voltage undervoltage| Red| Start charging
Cell  voltage undervoltage| Red| Start charging

Analysis and treatment of common faults
Analysis and treatment of common faults in the Table 4-2: Table 4-2 Analysis and treatment of common faults

• The indicator does not respond after the power on Total voltage lower than 40V*N
• Check the total voltage

| Total voltage lower than 40VN| Check the total voltage
2| No DC output| Battery data status is abnormal. Battery gets into over- discharged protection| Read the battery information on the monitor.
3| The DC power supply time is too short| Battery capacity become smaller| Storage battery replacement    or    add more modules
4| The battery can’t be fully charged to 100%| Charging voltage is too low| Adjust charging voltage at 57VN
5| The power cable sparks once power on and ALM light RED| Power connection short-circuit| Turn off the battery, check the cause of the short circuit
6| Communication fault| The DIP setting of the host is wrong/ the battery type of the inverter is wrong/ Communication cable used incorrectly/The communication cable is incorrectly connected at the battery communication port or the inverter communication port/The battery firmware version is too low to support the inverter| Check these possible causes one by one

If you need any technical help or have any question, please contact the dealer in time.

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