See details of the upcoming event and the Innovation stage we'll get the chance to lead!

Leading sales, Martyna had a chance to get to know most of our clients on top of having spoken to hundreds of people from the eMobility environment. She’s gained an in-depth understanding of what’s desired or unwanted in the business and she’s now applying that knowledge in her everyday job.

Martyna Wajda

At Solidstudio, we got the chance to attend many conferences, it’s time to start sharing at least some of them!

In less than a week we’ll get a chance to lead the Innovation stage at the Intercharge Network Conference in Berlin, Germany.

The 10th edition of the Hubject’s event known to be the biggest eMobility meetup in this part of the world is certainly a huge opportunity to meet the most eminent players in the field as well as catch up with some of our partners from different countries.


Given the fast-changing nature of eMobility and all faced obstacles, we’re thrilled to see events of that scale being organized and attended by so many people! As stated by the organizators:

“We need to unravel the digital DNA of eMobility, to understand the different strands that interlink into one coherent, functioning, evolving system.”

After 4 years devoted strictly to the EV industry, we couldn’t agree more. Besides, a similar approach has accompanied us throughout all these years of implementing open standards and looking for the best solutions in digital products.

As mentioned earlier, Solidstudio will lead the Innovation stage. It’s to no surprise as innovation plays a humongous role in tech solutions, much like the ones we’re delivering whether they are the CPO backend systems or EMP apps for the end-users.

Innovative approach has been leading us since the very first moment of deciding that eMobility was supposed to be our main field of interest and we’re especially excited to be sharing some thoughts on it along with our great guests!

Our stage will take place through both of the conference days - 12th and 13th of September.

We welcome everyone to come and say hi, enjoy the presentations and exchange some thoughts on the industry. We will have our tech and business representatives, so no matter whether it's a technical or partnership inquiry, we’ll get you covered!

ISO 15118 - what is it?

See what's behind the electronic system that controls the lithium-ion batteries in EVs

Being a co-founder of Solidstudio, Paweł has got to see all the development phases. He’s a skilled professional with years of experience, both in the software and in the eMobility worlds.

Paweł Głogowski

, we’ve briefly touched upon some of the emerging technologies in the world of eMobility. One of them (admittedly, not-so-emerging as it's been going on for a while) was the 

 used in EVs. It’s now time to shed some more light on what it is.

Surely, the batteries may be regarded as the core of any electric vehicle. Essentially, it is what gets the car going. It’s also what determines to a great extent how appealing an EV can get for the potential buyers. Thus, ensuring the battery runs smoothly, safely and efficiently is paramount in the EV formation process. Here’s where BMS kicks in.


) is a system that monitors and manages a rechargeable battery (or group of batteries), such as those found in electric vehicles, UPS systems, and solar energy storage systems.

The BMS is responsible for protecting the battery from operating outside its safe limits, maximizing its lifespan, and providing accurate information about the battery's state of charge, state of health, and current capacity. 

In short, its primary functions can be narrowed down to ensuring the battery remains safe and reliable.

A BMS typically consists of a control unit, sensors, and connection wires. The control unit may be a separate device or integrated into the battery pack. The sensors monitor various parameters of the battery, such as voltage, current, temperature, and state of charge. The connection wires carry power and data between the battery and the BMS.

The control unit uses the information from the sensors to determine when to charge or discharge the battery, how much power to allow in or out, and whether the battery is operating within its safe limits. If the battery is operating outside its safe limits, the BMS will take action to protect the battery, such as disconnecting it from the load or shutting off power altogether.

The BMS may also provide information about the battery to a user or system, such as the current state of charge, state of health, and remaining capacity. This information can be used to optimize the performance of the system in which the battery is used.

A BMS typically includes safety features to protect the battery, such as overcharge and over discharge protection, short circuit protection, and thermal runaway protection. These safety features help to prevent damage to the battery and ensure that it operates safely.

The BMS may also include features to maximize the lifespan of the battery, such as balancing. Balancing equalizes the voltage of the cells in a battery pack, which helps to prevent capacity loss and extends the lifespan of the battery.

Battery management systems are used in a variety of applications, including electric vehicles, UPS systems, and solar energy storage systems. BMSs are an important part of these systems, as they help to protect the battery from damage, extend its lifespan, and provide accurate information about the battery's state.

With lithium-ion, an average battery module consists of packs of single battery cells. That is because a singular cell doesn’t hold enough capacity to power the bigger establishments. In such cases (where there are multiple modules connected to make up for a battery) monitoring and managing becomes rather complicated, as the singular cells can charge differently.

BMS collects data gathered from the batteries (in real-time) and based on the information it acts accordingly. Amongst the parameters collected  there are:

Once these are collected, the BMS system will process it. The outcomes of such processing is the below data:

State of charge (SOC)- an estimation of how much charge the battery currently has - while in use

State of health (SOH) - an estimation of the capacity/condition of the battery, it measures how well the battery is able to hold a charge

Issues - monitoring and addressing any recognized malfunctions

Based on the outputs, the BMS then takes action to protect the battery, such as turning off charging when the SOC is full or shutting down the system when a cell is over temperature.

There are two main types of BMSs. The first is a 

, which uses one control unit to manage all of the battery cells in the system. The second type of BMS is a 

, which uses multiple control units to manage the battery cells in the system.

The main advantage of using a centralized BMS is that it is simpler and cheaper to design and build. The main disadvantage of using a centralized BMS is that if the control unit fails, the entire system will fail.


The main advantage of using a distributed BMS is that it is more resilient and can continue to operate even if one or more of the control units fails. The main disadvantage of using a distributed BMS is that it is more complex and expensive to design and build.

Which type of BMS is best for a given application depends on the specific requirements of the application. For example, if cost is the primary concern, then a centralized BMS may be the best choice. If reliability is the primary concern, then a distributed BMS may be the best choice.

In terms of the use of BMS in automotive, it doesn’t differ from any other means. It helps to ensure that the battery pack lasts for as long as possible and performs at its best. A well-designed BMS can make the difference between a battery pack that lasts for years and one that needs to be replaced frequently. This can have a significant impact on the overall cost of ownership of an electric vehicle.

Amongst the vital aspects that get covered by BMS in EVs, there are:

Thermal management - much like any other batteries, the ones installed in EVs can overheat. With thermal management, the censor units control the temperature and, if it get too high, they trigger the cooling mechanisms

Discharge and charge control - the primary function of any BMS is to protect the cells within the battery pack from being over-discharged or overcharged. To do this, the BMS will cut off the discharge path when the cell voltage drops below a certain threshold, and will also cut off the charging path when the cell voltage reaches a higher threshold.

Battery balancing - In order to ensure that all the cells in the battery pack are at the same voltage, the BMS will occasionally "balance" them by equalizing the voltages of all the cells. This is usually done during charging, when the cell voltages are highest.

Communication and Safety monitoring - Some BMS systems also have a communication interface that allows them to be connected to a computer or other devices. This can be used for firmware updates, data logging, or even remote control of the BMS. Additionally, BMS systems have built-in safety features that can monitor the system for faults and take appropriate action if a problem is detected.

Battery Management System (BMS)

Get our informative PDF on ISO 15118 and learn more about the standard.

Being an eMobility leader in various projects across multiple startups, Piotr was responsible for OCPI and OCPP integration as well as EMP and CPO platforms development. With extensive expertise in the open standards field and eMobility tech solutions, he is leading teams of experienced developers and contributing with invaluable knowledge and experience.

Piotr Majcher

Interoperability and standardization have become a big part of the EV transformation. As the industry evolves, more and more players come to the game, bringing new developments and ideas. With that, the entire ecosystem undergoes massive changes and it may get difficult to keep track of what’s happening.

That way, interoperability is critical for eMobility. 

Open standards are necessary to ensure that different types of electric vehicles can interoperate with each other and with the infrastructure that supports them, which is run by multiple CPOs and EMPs.

ISO 15118 is an international standard that defines the communication protocols and data structures used in electric vehicle charging. It specifies the two-way communication between Electric Vehicles (EV), including Battery Electric Vehicles and Plug-In Hybrid Electric Vehicles, and the Electric Vehicle Supply Equipment (EVSE).

Communication protocols and data structures

ISO 15118 is designed to be interoperable, meaning that EVs and EVSEs from different manufacturers should be able to communicate with each other. The standard is also designed to be scalable, so that it can be used for both residential and public charging stations.

It enables interoperability between electric vehicles and charging stations, and allows for sophisticated features such as billing based on time of use or energy consumption. ISO 15118 also provides a framework for charging station operators to manage access control and load balancing.

ISO 15118 is built upon Public Key Infrastructure (PKI)

, which means  electric vehicles can be identified and authenticated. This authentication can take place before, during or after a transaction.

The standard is built out of 8 parts, each defining a different aspect covered by ISO 15118 as a whole.

To learn more about ISO 15118, its specifications and features as well as how it works and what are the documents defining each functionality, download the paper from the box on the right side of the page.

Get our informative PDF on smart charging and see how it works!

Krzysztof is our Head of Products and he leads the technical development behind the suite of our ready-made solutions. Throughout the years in Solidstudio, he gained an invaluable insight into the eMobilty industry’s requirements and is now more than qualified to share his knowledge with others.

Krzysztof Ciombor

As we move towards an era where oil will likely become less accessible or even regulated in some way due to global warming concerns and other issues such as pollution caused by fuel sources like coal fired power plants, 

electric vehicles are to become the transport of the future.

 With such a massive shift across all transportation branches, all hands on deck in terms of innovative solutions are needed.

Luckily, such industry ameliorations can be observed in every aspect there is to eMobility. From ever-enhancing electric cars with prolonged-battery lives to all kinds of charging facilities, eMobility is entering a whole new level.

Amongst these solutions, a big part is played by software and digital products. Namely, eRoaming, connected car data and smart charging are all here to stay and are only advancing at a speedy pace.

We have already covered eRoaming in one of our downloadable PDFs. To see more click 

A few definitions can be found in terms of what smart charging really is. Some of the widely circulating ones say:

Smart charging is a cloud-based technology that makes it possible to adjust how much energy is used by EVs based on the current state of the energy grid.

But what does it really mean in practice? One must look at smart charging as a complex, inter-connected ecosystem that enables real-time data exchange between:


Through smart charging, the charging stations may monitor, manage, and restrict the use of charging devices to optimize energy consumption. The optimization happens on the basis of collected data which gathers information such as:

renewable energy availability or lack thereof

Future-proof nature of smart charging allows for free-choice maneuvers in terms of the quality and quantity of features, leaving the room for any necessary add-ons. All that to ensure EVs will not pose a threat to the grid in times of high charging demand that’s likely to grow directly proportional to the growing popularity of electric cars.

careful monitoring of the energy consumption and thus, transferring the charging loads across available energy sources and adjusting the power accordingly. 

The shifts are to ensure the continuity of (untouched) energy flow for its other consumers, such as homes and facilities nearby.

Solidstudio news! The ICNC22 conference

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