SMA Solar Technology had two patents in batteries during Q4 2023. The patent filed by SMA Solar Technology AG in Q4 2023 describes a transfer circuit/system for connecting battery racks to an inverter bridge for power exchange with an AC grid. It includes a second DC bus connected to the first DC bus via a DC/DC converter, allowing for intra-battery equalization by disconnecting and connecting battery racks. GlobalData’s report on SMA Solar Technology gives a 360-degreee view of the company including its patenting strategy. Buy the report here.
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SMA Solar Technology grant share with batteries as a theme is 0% in Q4 2023. Grant share is based on the ratio of number of grants to total number of patents.
Recent Patents
Application: Transfer unit, system and method for performing an intra-battery equalization process (Patent ID: US20230396078A1)
The patent application from SMA Solar Technology AG describes a transfer circuit or system that includes a first DC bus connecting multiple battery racks to an inverter bridge for power exchange with an AC grid. This system also features a second DC bus connected to the first DC bus via a DC/DC converter, allowing for intra-battery equalization processes by disconnecting and connecting battery racks as needed. The method involves balancing the state of charge of battery racks by disconnecting them from the first DC bus, connecting them to the second DC bus, and initiating power exchanges to achieve charge balancing before reconnecting them to the first DC bus.
Furthermore, the patent includes claims for a control circuit to manage the intra-battery equalization process, determine the need for equalization, and synchronize the process with power exchanges. The method outlined in the patent involves successive balancing of each battery rack, intermittent power exchanges to support the primary power exchange with the AC grid, and communication between the battery racks and the transfer circuit for efficient equalization. The control unit of the transfer system is designed to detect the optimal time for equalization processes and initiate them accordingly, ensuring efficient and synchronized operation of the battery racks within the system.
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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
