FreeWire Technologies has been granted a patent for a vehicle charging system that allows for charge transfers between batteries of multiple charging stations at a charging site. The system includes a power input port, a battery for storing electric power, a vehicle coupling for providing charging current to the vehicle, and an inter-charger connection for transferring DC power between charging systems. A system controller determines triggering conditions for charge transfers and controls the system accordingly. A centralized management system can also communicate with and control the charging stations. GlobalData’s report on FreeWire Technologies gives a 360-degree view of the company including its patenting strategy. Buy the report here.

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According to GlobalData’s company profile on FreeWire Technologies, battery management systems was a key innovation area identified from patents. FreeWire Technologies's grant share as of September 2023 was 56%. Grant share is based on the ratio of number of grants to total number of patents.

Patent granted for a vehicle charging system with battery transfer

Source: United States Patent and Trademark Office (USPTO). Credit: FreeWire Technologies Inc

A recently granted patent (Publication Number: US11772509B1) describes a vehicle charging system that allows for efficient energy transfers between multiple vehicle charging systems. The system includes a power input port to receive electric power from a power source, a battery to store the received power, and a vehicle coupling to provide charging current to the vehicle.

One key feature of the system is an inter-charger connection that is communicatively connected to the battery. This connection allows for direct current (DC) output to an additional vehicle charging system and also enables the system to receive DC input from the additional system. The inter-charger connection can also provide DC output to an external battery connected to the DC bus and receive DC input from the external battery.

The system is controlled by a system controller, which includes one or more processors. The controller is responsible for determining triggering conditions for charge transfer between the batteries of different charging systems. When a triggering condition is detected, the controller can initiate charge transfer by either providing DC output from the battery to the additional charging system or receiving and charging the battery with DC input from the additional system.

The patent also describes a method for managing energy transfers between multiple vehicle charging systems. The method involves charging the batteries of the charging systems using input electric power from a power source. The system controller determines triggering conditions for charge transfer and controls the charging systems accordingly. The method also includes the use of a centralized management system, which can send commands to the charging systems via a communication network.

Overall, this patented vehicle charging system and method provide a means for efficient energy transfers between multiple charging systems. The system controller and inter-charger connection enable the system to optimize charge transfer based on various triggering conditions, improving the overall charging efficiency and flexibility.

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GlobalData, the leading provider of industry intelligence, provided the underlying data, research, and analysis used to produce this article.

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.