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Batemo Cell Models FMU

  • What is the Batemo Cell Model FMU?

    Let
    us quote https://fmi-standard.org: “The Functional Mock-up Interface
    (FMI) is a free standard that defines a container and an interface to exchange
    dynamic models using a combination of XML files, binaries and C code zipped into
    a single file. It is supported by 100+ tools and maintained as a Modelica Association Project.“

    The Batemo Cell Model FMU (function mock-up unit) is an FMI conform implementation of the Batemo Cell Model and can thus be used in all supported tools. 

  • What Simulation environments are supported by the Batemo Cell Model FMU?

    There
    are many simulation environments that allow the import of a functional
    mockup unit (FMU)

    with the version 2.0 in co-simulation mode. You can see a list of supported
    tools here.

    Please contact Batemo Support  if you interested in using Batemo Cell Models in another simulation environment.

  • Is there a difference between the Batemo Cell Model FMU and the implementation for MATLAB Simulink?

    No. The Batemo Cell Model inputs, parameters and outputs are identical. Differences only arise from the fact that the different simulation environments integrate the Batemo Cell Model FMU differently resulting in a slightly different graphical user interface of the Batemo Cell Model.

Batemo Cell Models for MATLAB Simulink

  • How are Batemo Cell Models integrated into MATLAB Simulink?

    The Batemo Cell Models are a Simulink blockset. After installation there is a new entry Batemo Cells in your Simulink library browser that you select to drag and drop your Batemo Cell Models into your models.

    Batemo Cell Models are specifically designed for MATLAB Simulink. It is easy to connect the inports, to use the block mask, to set the Batemo Cell Models parameters and to visualize, save and analyze the Batemo Cell Model simulation results.

  • How can I connect Batemo Cell Models in series and in parallel?

    This is easily possible. Open the help of the Batemo Cell Model and open the tab Tutorials. Watch the pack design video tutorial to learn how to build your pack models using Batemo Cell Models.

  • I cannot find the Batemo Cell Models in the MATLAB Simulink Library Browser after I ran the Batemo Cell Models installer. What should I do?

    Open the Library Browser, right-click in the window and click Refresh Library Browser. If the Batemo Cell Models still do not appear close the Library Browser. Click Set Path in the Home menu tab of the MATLAB main window. Check if the Batemo Cell Models installation folder including all subfolders are listed in the MATLAB search path. If the folders are missing hit Add with Subfolders… and select the Batemo Cell Models installation folder. Click Save to close the set path menu. Open the Library Browser again, right click in the window and click Refresh Library Browser. If the Batemo Cell Models do still not appear, contact Batemo support.

  • The Batemo Cell Model outports pe or ac do not output any data. What is the problem?

    The two outports belong to the add-ons Power & Energy (pe) and Anode & Cathode (ac). To output the data of the add-ons make sure that you acquired the add-ons. Therefore, open the Batemo Cell Model block mask. If the respective add-on tab is greyed out in the mask, you did not acquire the add-on and cannot output the add-on data. Contact Batemo support to easily acquire the add-on.

    If the add-on tabs are not greyed out, ensure that you enabled the add-ons by activating the respective checkbox in the Batemo Cell Model block mask. Then, the corresponding outport should output the add-on data. If the problem persists, please contact Batemo support.

  • How can I quickly exchange Batemo Cell Models in my simulation models?

    Consider using the Configurational Subsystem block that is in the Simulink Library Browser under SimulinkPorts & Subsystems. Create a new Simulink library file and insert the Batemo Cell Models you want to exchange by drag & drop from the Simulink Library browser. Then insert the Configurational Subsystem and double-click it. You can choose which Batemo Cell Models should be members of the configurational subsystem that can later be selected. Click OK and save your library file. Insert the configurational subsystem by drag & drop in your simulation model. When you right-click the configurational subsystem and select Block Choice you can change the block to be any of its members by one click. This can also be automated by the following line of MATLAB code: set_param(‘YourModel/YourConfigurationalSubsystem’,’BlockChoice’,’YourMember’);

  • How can I change Batemo Cell Model parameters script-controlled?

    All Batemo Cell Model parameters are supplied via the block mask using different mask elements. It is possible to change all configurations of the block mask by script code.

    • Sliders: In the block mask, there is an edit field next to a slider containing the value of the parameter. Use the edit field to input a workspace variable name instead of a value, e.g. SOC instead of 90. This disables the slider. Assign the variable in the base workspace, e.g. by SOC = 90. At the start of the simulation this value is automatically fed to the Batemo Cell Model.
    • Radio Buttons: Radio buttons are script-controlled by set_param(‘YourModel/YourCellModel’,’Parameter_Radio’,’Value’);

  • How can I automate simulations?

    Simulations can be automated by a simulation script. A typical application is to change boundary conditions or Batemo Cell Model parameters and perform and evaluate a set of simulations. Use the From Workspace, the From File or the From Spreadsheet block from the Simulink library browser under Simulink / Sources to dynamically change boundary conditions using a script. 

    Adjust your boundary conditions and Batemo Cell Model parameters within a for-loop and use the command sim('YourModel') to start the simulation. The simulation results are saved with the To File or the To Workspace blocks from the Simulink library browser under Simulink / Sinks. 

License Management

  • What kind of Batemo Cell Model licenses are available?

    For the Batemo Cell Model software and the Add-Ons different license types are available. 

    • Named User: The license entitles one named user to simulate the Batemo Cell Models with one natural person being assigned to the named user.
    • Designated Computer: The license entitles to simulate the Batemo Cell Models on a single registered computer. You must ensure that the Batemo Cell Models only run on the designated computer and that only one natural person has access to the designated computer at any time.
    • Concurrent: The Batemo Cell Models can be simulated by all your employees. The number of concurrent users may not exceed the number of concurrent licenses.

    The
    licenses can either be purchased or rented. Choose whatever best suits your
    needs.

  • The certified time check of my license does not work. How can I fix that?

    A failure to update the certified time or the license
    is in most cases due to the inability to establish the connection to the time
    server. Many company networks use proxy servers, which must be configured for
    CodeMeter. If you want to know whether a proxy is used on your network and
    which settings are required, please ask your administrator.

    Alternatively, you may also try and read the
    settings of your internet browser and enter the data in CodeMeter WebAdmin. For
    Internet Explorer, please proceed as follows:

    Open the menu 「Tools | Internet Options |
    Connections | LAN Settings | Proxy server | Advanced. Note down the specified
    proxy including port, e.g. 「proxy.mycompany.com」 and 「3128」
    or 「192.168.146.200」 and 「8080」. Then do the following:

    • Open
      CodeMeter WebAdmin.
    • Navigate
      to 「Configuration |
      Proxy」.
    • Select
      the option 「activated」.
    • Complete
      the fields with the values you recorded before.
    • Click
      the 「Apply」 button to execute the changes.

    Now the time and firmware update should work.

  • I lost my CmStick. What can I do?

    Please contact Batemo Support. The lost CmStick is deactivated and a new CmStick including all purchased licenses is shipped to you.

  • I bound a CmActLicense to a computer. The computer is broken and I cannot deactivate the license. What can I do?

    Please contact Batemo support. The CmActLicense is deactivated and a new CmActLicense including all purchased licenses is issued that can be bound to another computer.

General

  • What is a Batemo Cell Model?

    A Batemo Cell Model is a high-precision, physical simulation model of a lithium ion battery. Through optimized parameterization methods, we easily and quickly create Batemo Cell Models for all type of cells and chemistries. With a flexible interface and simulation times of seconds, the Batemo Cell Models integrate seamlessly into your research and development processes.

  • What do I need to get started?

    When you want to simulate Batemo Cell Models you need two things:

    • A Batemo Cell Model: You can either purchase Batemo Cell Models from the Batemo Cell Explorer or let us create a custom Batemo Cell Model for you. 
    • A Batemo Cell Model license: When you simulate the Batemo Cell Model, you need a Batemo Cell Model license. We offer different license types (individual, concurrent) that you can either rent or purchase. Choose whatever is the most convenient for you.

    The simulations then run on your system in the
    simulation environment you choose (see software and hardware requirements).

  • How does Batemo demonstrate the validity of a Batemo Cell Model?

    All Batemo Cell Models are validated using to a specific scheme to ensure that the simulation results are correct. Two aspects are essential in this process.

    • The Batemo Cell Model validation is transparent: Each Batemo Cell Model contains a large set with raw measurement data that is created in the Batemo battery laboratory. For each sampling point the measurement and simulation result is compared and the voltage, temperature, energy and power accuracy are calculated. Summary graphs make the analysis of the data straight-forward. This is how we demonstrate that the Batemo Cell Model meets your requirements.
    • The Batemo Cell Model validation is extensive: The validation is carried out in the entire operating range as defined by the cell manufacturer. This includes the entire temperature range (typically from -20°C to 80°C), the entire current range (typical discharge currents from 0.1C to 50C) and the entire state of charge range (0% to 100%). We always use different excitation signals including highly dynamic power profiles.

  • How fast do Batemo Cell Models usually simulate?

    The simulation speed depends on the used hardware and the solver obviously. The simulation of a Batemo Cell Model in MATLAB Simulink R2016b with a fixed-step solver at a step size of 100ms is about 100x faster than real time on a normal office notebook (Lenovo ThinkPad L460). In practice, this means that typical simulations just take a couple of seconds.

    When a powerful workstation simulates the Batemo Cell Model, the simulations are typically 200x to 300x faster than real time. 

  • What are the software and hardware requirements to simulate Batemo Cell Models?

    To simulate Batemo Cell Models you need a PC with an installed simulation environment that we support.

    • MATLAB® Simulink®
      beginning with version
      R2016b
    • MATLAB® Simscape™
      beginning with version
      R2016b
    • A
      simulation environment that allows the import of a functional
      mockup unit (FMU)
      with
      the version 2.0 in co-simulation mode. You can see a list of supported tools here.

    Please contact Batemo Support if you interested in using Batemo Cell Models in another simulation environment.

  • Why are there Batemo Cell Model Add-Ons and what do they do?

    Batemo Cell Model Add-Ons extend the functionality of your Batemo Cell Model. You can enable an Add-On when you have the respective add-on license available.

    • Aging & Parameter Studies: The Add-On allows you to vary physical parameters of the Batemo Cell Model that are related to batch variations and cell aging. You can use the Add-On to analyze debalancing in your pack and the influence of capacity and power fade in your system.
    • Power & Energy: The Add-On enables the pe outport of the Batemo Cell Model. The outport supplies the simulation results of all powers, energies and efficiencies. You can use the Add-On to get a deep insight in the operation of the cell, couple the Batemo Cell Model to your CFD-tools to optimize your thermal design and develop energy-efficient operational strategies. 
    • Anode & Cathode: The Add-On enables the ac outport of the Batemo Cell Model. The outport supplies the simulation results of the internal physical states of the anode and the cathode. These are highly relevant in respect to recuperation, fast-charging and the development of operational strategies that actively avoid cell aging.

  • How does Batemo help me to get a smooth start?

    It is crucial that you can immediately start to work with your Batemo Cells efficiently. We created the Batemo Cell Model interface in a way that makes setting up models easy and straight-forward. All features are described in the built-in documentation and in more detail in the user manual.

    You also get access to video tutorials that help you to get started and learn more about how Batemo Cell Model simulations help you to solve typical design questions (e.g. pack design, fast-charging, cell aging).

  • How does the input and output interface of the Batemo Cell Model look like?

    Just as the real cell, the Batemo Cell Model has an electrical input (supplied as terminal current or terminal voltage) and a thermal input (supplied as cell surface temperature or cell surface heat current). 

    The Batemo Cell Model has various parameters that allow you to easily set the initial conditions as well as parameters that are related to pack design and to batch variations and cell aging.

    In general, the Batemo Cell Model outputs the quantities that are relevant in the design of battery systems. These are quantities that can be measured in the laboratory like the terminal current, the terminal voltage or the cell surface temperature but also internal quantities like the open circuit voltage, the state of charge or the inner cell temperature. Moreover, the Batemo Cell Model outputs physical signals of the cell interior like the anode and cathode surface potentials, the inner cell losses or the reversibly stored energy. 

  • I did not find prices on the website. How do I get a quotation?

    Please contact Batemo Support. We have one of our experts talk to you and identify a solution that best suits your needs!

  • I want to learn more. What is the best next step?

    Contact Batemo Support as a first step to arrange a meeting with one of our experts. In the meeting we go into more detail, show you simulations live and discuss how the Batemo Cell Models help you to solve your major challenges in battery system design.

  • What does the Code in the Batemo Cell Model filename mean?

    Each Batemo Cell Model has a unique filename structured in the following way: Manufacturer_Type_YYBGDxyzS. Therein the manufacturer is the cell manufacturer and type the product name of the cell. YY is the year, B a Batemo batch number, G the used geometry of the Batemo Cell Model (r is rectangular, c is cylindrical), D is the number of dimensions of the Batemo Cell Model (0-dimensional up to 3-dimensional), xyz are the number of supporting points the Batemo Cell Model uses in each dimension and S is a number that indicates the implementation (0 is Simulink, 1 is Simscape, 2 is FMU).