To make sure they work well for a long time, energy storage systems usually need to be checked once a month, tested once every three months, maintained once every six months, and have a professional medical evaluation once a year.
Some common problems are battery problems, inverter overload, communication problems, temperature problems, and so on.
Proper installation and regular maintenance are important for making energy storage last longer and making the system safer.
To make sure that a big household energy storage system or a portable emergency power supply is safe and reliable, you must follow the rules for maintenance.
The type of equipment, the environment in which it is used, the load circumstances, and the system's complexity all affect how often energy storage devices need to be maintained. Here are the general suggestions:
1. Basic inspection once a month
This works with all types of home energy storage systems, including fixed ones like Home Power Stations.
The main things to look at are:
Is there an unusual alarm in the energy storage system?
Is the Battery Management System (BMS) working properly?
Is there an unusual shift in the battery's SOC (% of charge)?
Is the photovoltaic input/grid input working right?
Does the inverter's power change?
Purpose: Make sure the system is working properly and quickly find any possible problems.
2. A full inspection every three months (once every three months)
Good for grid-connected systems with photovoltaic panels and energy storage, as well as homes that run on high loads for long periods of time.
Main things to check:
Make sure the voltage at the battery terminals is the same on both sides.
Is the temperature of the battery normal?
The way the inverter lets heat out
Is the termination not tight?
Has the efficiency of charging and discharging gone down?
Goal: Keep the system safe from possible problems caused by high temperature, humidity, or load pressure.
3. Maintenance that happens every six months (once every six months)
A big energy storage system that can run steadily for a long time.
The essential things to do for maintenance are:
Take care of the inverter and the heat dissipation channel.
Look for stains, dust, and things that get in the way on the solar panel.
Check to see if the battery looks swollen or misshapen.
Check to see if the number of battery cycles is out of the ordinary.
Purpose: Make sure that the whole energy storage system can get rid of heat, is structurally safe, and lasts a long time.
4. A yearly professional physical exam (once a year)
It is best to have expert technicians do it.
Content for professional maintenance:
Full examination of the uniformity of battery cells
Update to the BMS version
Set the inverter's parameters
Finding the protection module that is linked to the grid
Health Testing (SOH)
Goal: Make sure the energy storage system works safely for a long time and that the battery lasts more than ten years.
二, What are some of the most typical problems with energy storage systems?
There are four main types of problems that can happen with energy storage systems: battery type, inverter type, communication type, and environmental type. These problems can happen with both fixed energy storage and outside emergency power sources like Portable Solar Power.
Here is a thorough analysis:
1. Problems with the battery
The battery is the most important portion of the energy storage system and the part that breaks down the most often.
Some common problems are:
The battery can't be charged (SOC doesn't go up)
Charging and discharging currents that are not normal (overcurrent, undercurrent)
A big difference in battery voltage
The temperature of the cell is too high or too low.
Battery discharges quickly on its own
The battery goes into protection mode and won't start.
Possible reasons:
Protection for BMS
Ageing of cells
The temperature outside is not right
Error in setting charging parameters
2. Problems with the inverter
The inverter is the "heart" of the system because it changes AC to DC.
Common problems:
Not enough output power
Overloading the inverter
The inverter's temperature is too high.
A lot of restarts or disconnections
Communication with the battery didn't work
Finding the root cause:
High-power household appliances have an immediate effect.
Overheating happens when heat doesn't spread out well.
Wiring that isn't tight
failure of the software
3. Failure to communicate (BMS/inverter)
If communication breaks down, the system could not be able to charge, discharge, or switch modes.
How well it works:
"Communication error" alarm on the system
It is not possible to read battery data.
We can't tell if it's photovoltaic or mains power
Reason:
Bad contact on the CAN/RS485 communication line
Different versions of the software
Damage to the module
4. Faults relating to the environment and outside conditions
Energy storage systems need to be kept under specified conditions, and going outside of those conditions can cause problems with the system.
Normal situations:
Exposing batteries to high temperatures protects them.
Very cold temperatures make it impossible to charge.
Water gets inside the inverter because to moisture.
Dust is obstructing the port for heat dissipation.
Power grid oscillations that induce thunderstorms and system disconnections
三, What can you do to lower the chance of energy storage failure?
Based on what people in the sector have learnt, these steps should be taken:
1. Pick the right place to install it
with good airflow
temperature stability
Don't let direct sunlight in
Stay away from precipitation, dampness, and dust buildup.
2. Do routine maintenance
Inspections happen every month, every three months, every six months, and every year, as was said before.
3. Reasonable usage of load
Don't turn on more than one high-power appliance at the same time.
Don't go beyond the inverter's maximum instantaneous power.
4. Check the status of system apps or display panels on a regular basis
Look for trouble codes
Make sure the changes to the SOC make sense.
5. Pick brands and after-sales teams that you can trust.
Not only may it cut down on problems, but it can also be fixed promptly when they happen.
