Series-type charging and discharging apparatus without current interruption

    公开(公告)号:US11996712B2

    公开(公告)日:2024-05-28

    申请号:US18269965

    申请日:2021-04-07

    Inventor: Jeong Moog Kim

    Abstract: The present disclosure relates to a method and an apparatus for charging and discharging a plurality of secondary batteries connected in series by using one bi-directional main charging and discharging power supply, and more particularly, to a series-type charging and discharging method and apparatus without current interruption in which auxiliary charging power supplies are added in parallel to individual batteries to reduce a capacity difference between the individual batteries and perform continuous charging and discharging according to a predetermined recipe (electrical conditions for charging and discharging, etc.) without interruption (on/off) of a charging and discharging current of the main charging and discharging power supply.

    Electrical power system
    4.
    发明授权

    公开(公告)号:US11873109B2

    公开(公告)日:2024-01-16

    申请号:US18053015

    申请日:2022-11-07

    Abstract: The disclosure relates to an electrical power system for providing a stabilised DC voltage to a power bus. Example embodiments include an electrical power system comprising: a DC power bus having first and second DC power bus terminals; an electrical storage unit having first and second terminals, the second terminal connected to the second DC power bus terminal; a DC:DC converter having first and second DC:AC converters and a transformer connected between the first and second DC:AC converters, the first DC:AC converter connected between the first terminal of the electrical storage unit and the first DC power bus terminal; and a controller connected to control a switching operation of one or both of the first and second DC:AC converters.

    Voltage balancing system
    5.
    发明授权

    公开(公告)号:US11870281B2

    公开(公告)日:2024-01-09

    申请号:US17128164

    申请日:2020-12-20

    CPC classification number: H02J7/0016 H02J1/106 H02J7/0019

    Abstract: The invention provides a voltage balancing system for balancing controlling of voltage of battery cells including a first set of battery cells and a second set of battery cells connected in series. The system includes a high-side analog front end (AFE) connected to the first set of battery cells, a low-side analog front end (AFE) connected to the second set of battery cells, a microcontroller communicating with the high-side AFE and the low-side AFE, and a communication isolating module interconnecting between the high-side AFE and the microcontroller. The system further includes a balancing module arranged at a back end of the low-side AFE or the high-side AFE to equalize voltages output by the low-side AFE and the high-side AFE. Compared with the prior arts, the system employs a balancing module to balance the voltages of the two sets of battery cells, which can shorten the voltage difference therebetween.

    BATTERY STATE OF CHARGE COMPENSATION
    6.
    发明公开

    公开(公告)号:US20240006887A1

    公开(公告)日:2024-01-04

    申请号:US18470017

    申请日:2023-09-19

    CPC classification number: H02J3/32 H02J1/106 H02M3/1584 H02J2310/44

    Abstract: An electric power source includes: a battery defining a state of charge; a converter in electrical communication with the battery; and a controller in operable communication with the converter, the controller including a compensation toggle circuit configured to provide a compensation toggle value based on a power output of the battery; a dynamic droop control circuit configured to receive the compensation toggle value and switch an output droop value of the dynamic droop control circuit from an upper output droop measurement to a lower output droop measurement, wherein the lower output droop measurement is based on the state of charge of the battery.

    POWER DISTRIBUTION SYSTEM WITH REDUNDANCY TO INCREASE SAFETY FACTOR

    公开(公告)号:US20230170692A1

    公开(公告)日:2023-06-01

    申请号:US18159058

    申请日:2023-01-24

    Applicant: Pony AI Inc.

    Inventor: Kai Tan Ran Chen Bo Pan

    CPC classification number: H02J1/106 G06F1/3206 G06F1/30 H02J1/14 H02J1/086

    Abstract: Provided herein is a power distribution system comprising a feedback circuit including a transistor in series with a relay, the feedback circuit regulating regulate a main power path including a main power supply connected in series with an electric power converter. The power distribution system further comprises OR-ing controllers that regulate the main power path and a backup power path including a low-voltage battery. The power distribution system further comprises terminals through which power from the main power path or the backup power path is transmitted to respective components corresponding to channels. The power distribution system further includes a microcontroller that acquires data in each of the channels and control operations associated with each of the channels based on the acquired data.

    BATTERY CURRENT SHARING CONTROL METHOD AND BATTERY CURRENT SHARING CONTROL SYSTEM

    公开(公告)号:US20230155377A1

    公开(公告)日:2023-05-18

    申请号:US18090390

    申请日:2022-12-28

    CPC classification number: H02J1/106 G01R31/3835 H02J7/00306

    Abstract: The present disclosure relates to a battery current sharing control method and a battery current sharing control system. The method includes: acquiring an actually measured cell array current corresponding to each of cell arrays; determining a target current of all cell arrays based on actually measured cell array currents corresponding to all the cell arrays; and adjusting an output current of each of cell array branches to the target current via adjusting current sharing DCDC converters based on the actually measured cell array currents corresponding to all the cell arrays and the target current. In this way, a capacity loss of the cell arrays caused by connecting in parallel can be reduced, and battery capacity utilization of the cell arrays can be improved.

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