RENEWABLE ENERGY

DC-BUS CONTROLS GREEN ENERGY SOLAR PANELS AND RECHARGEABLE BATTERIES.

The Problem

Electrical Vehicle (EV) high voltage Battery is constructed from serially connected rechargeable battery cells. Each cell has to be monitored for proper operation within specified temperature and voltage range.  Multiple data cables and data interfaces are required to communicate between modules.

Solar panels have similar requirements in order to optimize the operation of each PV panel in an array of solar panels.

The Solution

Yamar's devices communicate serially over the existing power bus that connect the Li-Ion cells modules.  The high voltage lines transfer the cells state of health, state of charge information to the battery management system (BMS) unit.  Saving the need for dedicated wires, simplify the construction of vehicle’s high voltage battery.

The same solution is used in a photo-voltaic system that includes an array of solar panels and a central energy management unit. The Power line communication devices allow optimization of each solar panel to increase the system energy efficiency.

Battery Management System

Electrical Vehicle (EV) high voltage Battery is constructed from serially connected battery modules, consisting of rechargeable battery cells such as Lithium-Ion.

Each cell has to be monitored for proper operation within specified temperature and voltage range. The use of DC-BUS devices allow serial communication between the modules constructing the high voltage battery and its battery management system.

The coupling between the high voltage bus and the low voltage BMS unit is by a simple capacitors coupling.

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    YAMAR ELECTRONICS Ltd.

    A fabless semiconductor company since 1994. We develop and sell our unique devices for DC power line communication targeting wire saving. Customers in more than 51 countries use the devices in a wide range of applications; Automotive, Aerospace, Lighting, Battery monitoring (BMS) and more. The devices meet existing protocols such as UART, LIN, CAN, SPI, DMX512, and I2C keeping it simple to operate. Yamar engineers lead the LIN over DC powerline (DC-LIN) ISO 17987-8 standardization workgroup.

    The innovation team continues to develop new technologies and products.

     

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