Our Joint Operating system for Seamless EV charging, the brain of a charging station. A flexible and open operating system that finally makes it easy for EV charger manufacturers to comply with ever-evolving industry standards.
Josev stands for Joint Operating system for Seamless EV charging. The clue is in the name: it makes sure that everything is running seamlessly. Josev frees you from the complexity of implementing and testing ever-evolving future-proof communication standards, such as OCPP 2.0.1 and ISO 15118, which comprise hundreds of technical requirements.
Josev stays in the middle of the action, by interfacing between the EV, the charging station and the CSMS. All so that EV drivers can experience easy and frictionless charging.
Enables the most user-friendly and secure charging experience for both AC and DC chargers
Second generation ISO 15118, enables vehicle-to-grid, wireless charging, ACD-P , higher data security, and more
Establishes the data link between EV and charger via the charging cable (through PLC via HomePlug Green PHY)
Facilitates future-proof features like built-in ISO 15118 support, plug & play installation, powerful remote control & monitoring
Establishes the data link between EV and charger via wireless communication (based on IEEE 802.11n)
Based on regular interoperability tests, and learnings from our community developers, including CharIN Testivals
It’s a process: from a first workshop to define the interface, to integration tests, to delivering the final product. Josev is based on microservices with APIs to facilitate innovative integrations.
We use MQTT as a communication mediator between Josev and the manufacturer’s safety-related code. Together we’ll define a tailored interface that will take care of the communication with the EV (via ISO 15118) and the CSMS (via OCPP 2.0.1), so you don’t have to.
The communication between the EV and the charger is usually a black box for CPOs. If the communication fails for some reason, the CPO has usually no insight as to why it happened.
Josev’s ISO 15118 protocol analyser solves this problem. It logs the ISO 15118 communication between the EV and the charger to enable an in-depth message analysis via a user-friendly cloud-based web interface, including detailed error reporting to enable a more efficient debugging process.
Our own high-performing EXI codec makes sure messages are exchanged between the EV and the charger in the most efficient way - with insightful debugging infos for testers.
As our partner, you are entitled to receive new updates of the OS build that will improve over time, either by reducing its size, spending less resources or by adding features that you need or want to have. Your OS is built to fit your needs.
*only supported by Sara
Josev connects with any CSMS running OCPP 2.0.1 and later versions, allowing the smoothest possible operation. Athat operates Josev’s counterpart, Sara, can take it one step further and access fine-grained analytics and a detailed view on what’s going on in the ISO 15118 communication, between the EV and the charger.Discover Sara →Text Link
Because Josev is built with flexibility at its core, adding more brain power with additional services and third-party integrations on your hardware is simple. The world gets a better EV charging experience if all developers start with the same bullet-proof foundation. A common starting point eliminates errors, reduces development time, and opens up limitless customisation.
There’s no need for every charging station manufacturer to reinvent the wheel, so we provide a modular set of software modules that can be integrated more or less off-the-shelf. We take care of ISO 15118 and OCPP conformance testing as part of our long-term support. There is no hardware lock-in, as we’ll support major hardware platforms using Yocto-based Linux builds.
Building a system as powerful and reliable as Josev from scratch is a big investment. But choosing Josev means that you’ll significantly save costs in the long run, get to market quicker, and reduce risks to your in-house development and testing. This way you can focus on your core business and USPs.
Both ISO 15118 and OCPP 2.0.1 support digitally signed messages and encrypted data transmission with Transport Layer Security (TLS) 1.2 and higher and strong cipher suites. We even go a step further to make sure that all of Josev undergoes a security audit.
Maybe you want to add your own smart load balancer or another application that adds significant value to your charger. With Josev’s easy-to-use interface, you can easily integrate these functionalities, whatever the demand.
Germany is one of the first countries across the globe to enforce calibration law regulations (“Eichrecht”) for EV charging infrastructure, and it seems that other countries will follow suit. This is why we ensure that Josev fully complies with these regulations.
With Josev, it’s no effort to keep the ISO 15118 and OCPP software stacks up to date. With Josev, our over-the-air (OTA) updates will go hand-in-hand with our continuous conformance and interoperability tests (including the knowledge we gain from CharIN testivals).
We’re creating our own communication controller that enables PLC (power line communication), display control, NFC payment and more. Josev will be optimised for this hardware architecture. Are you interested in getting together to define the best solutions for our customers?Text Link
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Sara stands for Station Analytics and Remote Administration
The Open Charge Alliance is the official body that specifies OCPP 2.0.1 and defines a set of certification profiles. Each profile tests a certain set of functionalities. Depending on the functionality of your charger or CSMS, you might want to certify for either a subset or all of these profiles.
Continuous Integration / Continuous Deployment (CI/CD)
Scotti stands for Simple Compliance Testing Tool for Interoperability.
Efficient XML Interchange (EXI) is a very compact representation of XML. All ISO 15118 messages are defined in XML. EXI improves serialisation and parsing speed on embedded devices (like an EV and a charging station controller) and allows more efficient use of memory and battery life, compared to standard (textual) XML.
The Message Queuing Telemetry Transport (MQTT) is a lightweight, publish-subscribe network protocol that transports messages between devices.
A Charging Station Management System (CSMS) helps you monitor, maintain, and control your charger network.
Automated Connection Device (ACD), a conductive charging concept that doesn't require a person to plug in the charging cable. A first implementation is ACD-P, where 'P' stands for 'pantograph' charging of buses.
Power line communication, a communication technology that enables sending data over existing power cables.
Signal Level Attenuation Characterisation (SLAC) is based on power line communication (specifically HomePlug Green PHY) and is a protocol to establish the data link between the EV and the charging station via the charging cable.
Charge Point Operator, the entity monitoring and managing an EV charger network.