A hybrid energy system is configured to carry a power load for a generator configured to output an AC signal. The hybrid energy system includes a plurality of battery banks, and a renewable energy source. The plurality of battery banks includes a low cycle life battery and a high cycle life battery. When the renewable energy source is outputting more power than required by a load, the access energy is used to recharge the plurality of battery banks. The low cycle life battery is only recharged once a day by the renewable energy source. The high cycle life battery can be recharged by both the renewable energy source and the generator.

A method of controlling contactor sequencing for a battery, wherein the battery comprises a circuit. The method comprises determining an architecture of the circuit, wherein the circuit comprises at least a positive contactor assembly and a negative contactor assembly. A direction of current flow through the circuit is determined. Ratings are determined for the positive and negative contactor assemblies for current flow in a first direction and a second direction. The method comprises determining a sequence of switching the contactor assemblies based on at least one of: the priorities assigned to the positive contactors; the priorities assigned to the negative contactors; the direction of current flow; the first and second ratings of the positive contactor assembly; and the third and fourth ratings of the negative contactor assembly. The method further comprises switching the contactor assemblies according to the sequence.

Disclosed herein are battery management systems (BMS) for controlling the operating state of a battery pack device, as well as methods for changing the operating state of a battery pack device. The battery pack may have multiple cells therein, each cell capable of generating multiple different voltages to allow more energy (voltagecurrent) to be quickly and efficiently put into the battery, thus optimizing battery charging (i.e., reducing battery charging times). These battery packs may change from operating in series, to operating in parallel, when desired, while utilizing affordable relays and more affordable electrical components. These battery packs may be comprised of any number of cells and can controlled and/or operated by the BMS, for optimal battery charging, or for optimal discharging, as desired. The BMS may be any type of control logic and/or software, operable to control and/or operate the battery packs.

A method includes determining a first voltage level of a first battery and a second voltage level of a second battery. Based on a difference between the first voltage level and the second voltage level satisfying a first threshold and a magnitude of a current failing to satisfy a second threshold, one of the first battery or the second battery is disconnected from the one or more components, and the one or more components of the portable device are powered using the other of the first battery or the second battery. Based on one or more of the difference between the first voltage level and the second voltage level failing to satisfy the first threshold or the magnitude of the current failing to satisfy the second threshold, the one or more components of the portable device are powered using the first battery and the second battery.

A smart terminal and a control method therefor. The smart terminal comprises: a control circuit, a detection circuit, a first connector and a charging circuit. The detection circuit is respectively connected to the control circuit and the first connector. The detection circuit is used for detecting an electrical signal of the first connector and feeding same back to the control circuit. The control circuit is used for determining a control instruction on the basis of the electrical signal of the first connector, the control instruction being used for controlling the charging circuit and the first connector.

An assembly includes one or more photovoltaic solar trackers; a rechargeable power supply system, including power supply elements to power the tracker or trackers; a charging system, to recharge the power elements; and a tracker controller. The assembly stands out for including one or more supercapacitors as power supply elements. The invention makes it possible to arrange the power supply elements at low temperatures without the need for heaters, increase their useful life and reduce their size.

The invention relates to a capacitive battery active equalization circuit, including a battery pack, an equalizer set, an energy storage capacitor group, and a main control unit, the equalizer set comprises n equalizers; the adjacent equalizers are connected to each other through control signal interaction pins; the main control unit is connected with the control signal interactive pin of the first equalizer or the last equalizer in the equalizer set; the battery pack comprises n+1 batteries connected in series; the energy storage capacitor group includes n capacitors, and each capacitor is connected to the capacitor connection pin of the corresponding equalizer. The switching control module of the equalization chip is used to control the capacitor connection pin to selectively connect with high-voltage battery and low-voltage batteries so as to transfer power and effectively improve equalization efficiency.

A bidirectional power supply apparatus includes: an alternating current input port for inputting an alternating current to the bidirectional power supply apparatus; an alternating current output port for outputting the alternating current to an alternating current device; a direct current input or output port for transmitting a direct current between the bidirectional power supply apparatus and a direct current device bidirectionally; a bidirectional energy conversion module for performing multiple energy conversions on electrical energy inputted to the bidirectional power supply apparatus; and a power management module electrically connected to the alternating current input port, the alternating current output port, and the direct current input or output port. The power management module is configured to control an energy conversion manner of the bidirectional energy conversion module according to a port connection status of the alternating current input port, the alternating current output port, or the direct current input or output port.