Franklin Wh Energy Storage Inc.

Daqing Wang

Gang Xiao

Jing Liu

Song Chen

Long Chen

Qing Zhang

Mingfeng Li

Cheung (Gary) Lam

Yanxiang Wang

Ke Bi

Lianyan Cai

Douglas Amarhanow

Dongcai Tang

Xiaolong Luo

Jingming Leng

Junhua Jiang

Haisheng Song

Shixian Xu

Yuezhen Hu

Peiming Chen

Hongtao Nie

A meter socket adapter (MSA) for connecting a battery energy storage system (BESS) to a household microgrid through a meter combo load center. The MSA includes: a housing matching an electricity meter and a meter socket in the meter combo load center; a plurality of power conductors that connect among the electricity meter, the meter socket, and BESS; a meter interconnection device (MID) switch for connecting a utility grid or one or more distribution energy resource (DER) devices to supply power to household loads in the household microgrid; a MID driving circuit for driving the MID switch to close or open; and a MID connection detection circuit to verify an electrical connection of a closed MID switch.

Interconnection between household microgrid and utility grid

A method for estimating a state of health (SOH) of a battery pack includes estimating a number of charge and discharge cycles of the battery pack; calculating a first SOH of the battery pack by using the number of charge and discharge cycles; calculating a number of service years of the battery pack; calculating a second SOH of the battery pack by using the number of service years; calculating a limit discharge capacity of the battery pack; calculating a third SOH of the battery pack by using the limit discharge capacity; and comparing a value of the first SOH, a value of the second SOH, and a value of the third SOH and taking a minimum value as the SOH of the battery pack.

Method and system for estimating state of health (SOH) of battery pack for household energy storage

Provided is a generator access system for household energy storage. The generator access system for household energy storage includes an automatic transfer switch (ATS), an energy gateway, an energy storage system, and a load access switching module. The energy gateway is connected to the automatic transfer switch (ATS) and the automatic transfer switch (ATS) is further connected to a generator. The automatic transfer switch (ATS) is configured to control coupling of the energy gateway and the generator and decoupling of the generator from the energy gateway; the energy storage system is connected to the energy gateway and includes at least one energy storage module configured to store electrical energy. The load access switching module is connected to the energy gateway and configured to control a number of connected loads.

Generator access system for household energy storage

The present application discloses a multi-port energy storage battery and a multi-port energy storage battery pack. The multi-port energy storage battery includes: a first port, a second port and a third port, where the first port is a 48V DC voltage port, the second port is a 400V DC voltage port, and the third port is a 120/240V AC voltage port; a battery module, including a first interface, the first interface is coupled to the first port, the battery module provides 48V DC current; a bidirectional integrated converter, operating in a DC-DC converting mode, a AC-DC converting mode or a DC-AC converting mode, where the bidirectional integrated converter is respectively connected to the first port, the second port, and the third port, and one of the first port, the second port, and the third port is connected to external power supply.

Multi-port energy storage battery and multi- port energy storage battery pack

An energy coupling method for household energy storage includes: connecting an alternate current (AC) output from an electric vehicle (EV) to a household electricity grid through an AC-to-AC power converter capable of outputting a vehicle-to-load (V2L) AC power that is synchronized to the household electricity grid; in response to an outage of an electricity grid that supplies power to the household grid, turning on the AC-to-AC power converter to supply the V2L AC power to a household load connected to the household electricity grid; and in response to a recovery of the electricity grid, turning off the AC-to-AC power converter to stop outputting the V2L AC power.

Energy coupling method and system for household energy storage

A meter socket adapter (MSA) for connecting a battery energy storage system (BESS) to a household microgrid through a meter combo load center. The MSA includes: a housing matching an electricity meter and a meter socket in the meter combo load center; a plurality of power conductors that connect among the electricity meter, the meter socket, and BESS; a meter interconnection device (MID) switch for connecting a utility grid or one or more distribution energy resource (DER) devices to supply power to household loads in the household microgrid; a MID driving circuit for driving the MID switch to close or open; and a thermal management circuit couple with a plurality of temperature sensors disposed at each high current connection point to prevent overheat.

Energy controller in meter socket adapter connected household microgrid

The present application relates to a method for seamless switching between off-grid and grid-connected including: in a grid-connected state, when a host determines that utility power is abnormal, a grid-connected working mode is closed, a phase-locked source of the host is switched from the utility power to a self-oscillation state, the phase-locked source of the slave is switched to the self-oscillation state of the host, and phase-locking is performed, and an off-grid working mode is started after an input switch is turned off; in an off-grid state, when the host determines that the utility power is normal, the phase-locked source of the host is switched from the self-oscillation state to the utility power, and, the phase-locked source of the slave is switched to the utility power, and phase-locking is performed, and the grid-connected working mode is started after the input switch is turned on.

Method for seamless switching between off-grid and grid-connected and household energy storage system

Provided are a soft-start method, a power converter system, and a household energy storage system, which are applied to the field of household energy storage technology and are used to improve the soft-start effect of a full-bridge resonant converter. The method includes the following manners: A soft-start process is configured as multiple operating periods, and a duty cycle is adjusted in periods and gradually increases; and in the soft-start process, according to the conversion of the duty cycle, a voltage is slowly output, and the value of the output voltage is gradually increased, so that the operating current in the soft-start process can be effectively controlled, thereby reducing the voltage stress of a power switch transistor when the power switch transistor is hard turned off.

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Shenzhen, China

Daqing Wang