210results about "Battery overcurrent protection" patented technology

A control switch incorporating a 1:2 demultiplexer is used to control timing for a concurrent switching, break-before-make and make-before-break power multiplexing, and is configurable to link a plurality of the control switches into a control chain to perform sequential charging, sequential discharging, parallel charging, parallel discharging, and concurrent sequential charging and discharging for a plurality of batteries coupled to the control chain in a power system.

An energy storage system comprises a set of swappable battery modules positioned in battery slots with a battery module being controlled by a control switch. The control switches are linkable to form a charging control chain and / or a discharging control chain respectively to control sequential charging / discharging, parallel charging / discharging, and segmented charging / discharging among the set of battery modules in the energy storage system. Methods to detect defective battery module in a battery slot are also presented. The energy storage system can be configured in an AC power distribution environment, a DC power distribution environment, or in an EV. The energy storage system is scalable, automatically reconfigurable and accepts AC power and regenerated DC power.

Systems and methods are described for managing charging and discharging of battery packs. In one or more aspects, a system and method are provided to minimize overcharging of battery cells of specific battery chemistries while still enabling fast charging cycles. In other aspects, a buck converter may be used to reduce a voltage of power used to charge the cells. In further aspects, a fast overcurrent protection circuit is described to address situations involving internal short circuits of a battery cell or battery pack. In yet further aspects, a bypass circuit is provided in series-connected battery packs to improve the charging of undercharged battery packs while also increasing the efficiency of the overall charging process. In other aspects, a circuit is provided that permits a controller to determine a configuration of battery packs. In yet further aspects, a system may determine a discharge current for a collection of battery packs based on each battery pack's state of health (SOH) and forward that determination to an external device.

The charging and / or discharging of a set of swappable battery modules in a battery system is carried out automatically using a set of charging and / or discharging control switches linked in a sequential charging and / or a discharging control chain. The charging and discharging of the set of battery modules can be done sequentially or in parallel, and is hardware-based with minimal software / firmware involvement. The system is scalable and automatically reconfigurable for use in an infrastructure and / or in an electric vehicle. The swappable battery modules may be positioned in the battery slots or butted together in the battery system.

The charging and / or discharging of a set of swappable battery modules in a battery system is carried out automatically using a set of charging and / or discharging control switches linked in a sequential charging and / or a discharging control chain. The charging and discharging of the set of battery modules can be done sequentially or in parallel, and is hardware-based with minimal software / firmware involvement. The system is scalable and automatically reconfigurable for use in an infrastructure and / or in an electric vehicle. The swappable battery modules may be positioned in the battery slots or butted together in the battery system.

The power conversion apparatus is provided with a battery interconnection switch disposed on an inter-storage electrical path that electrically connects between a negative terminal of the first storage battery and a positive terminal of the second storage battery, a bypass switch that performs at least one of an electrical connection between the negative terminal of the first storage battery and the negative terminal of the second storage battery and an electrical connection between the positive terminal of the first storage battery and the positive terminal of the second storage battery, and a control unit that detects, before controlling one switch between the battery interconnection switch and the bypass switch to be ON, whether the other switch is stuck ON.

A control switch incorporating a 1:2 demultiplexer is used in controlling timing for concurrent switching, break-before-make and make-before-break power multiplexing, and is configurable to link a plurality of the control switches into a control chain to perform sequential charging, sequential discharging, parallel charging, parallel discharging, simultaneous sequential charging and discharging for a plurality of batteries coupled to the control chain in a power system.

A short circuit identification method is provided for a sampling element of a battery management system. A temperature sensor is disposed in a battery management system to monitor a temperature of a discharge transistor, and the method includes: obtaining the temperature of the discharge transistor by using the temperature sensor, and calculating a temperature difference of the discharge transistor in a preset duration; comparing a discharge current obtained by using a sampling element with a preset current threshold; and determining that the sampling element is short-circuited. In embodiments of the present application, the temperature sensor is used to monitor the temperature change rate of the discharge transistor in the BMS system, it can be detected that only one sampling element has a short-circuit fault with reference to the discharge current obtained by the sampling element, and corresponding protection measures are taken, so that the BMS system runs safely and stably.

A battery system is mounted on an eVTOL. The battery system includes a battery, an auxiliary battery, and a charge-related equipment. The battery supplies power to a drive target including a rotor blade of the eVTOL. The auxiliary battery charges the battery. The charge-related equipment controls charging from the auxiliary battery to the battery. The charge-related equipment has a function of electrically connecting or disconnecting the auxiliary battery and the battery. It is possible to reduce bias in ion concentration caused by discharge during a flight by temporarily charging the battery from the auxiliary battery and changing the direction of the current so as to reduce the temporary deterioration. Thus, the safety of the flight can be enhanced.

A power supply system and method of a server, an electronic device, and a storage medium are provided. By means of cooperative work of main circuit structures such as a high-voltage battery power master control unit, battery string management and control units, and power conversion string management and control units, power information of each subsystem in the power supply system is collected and analyzed in real time, and the high-voltage battery power master control unit can also issue a corresponding control instruction to each subsystem according to the analysis result so as to realize power control of each subsystem, thereby controlling the total output power of the server.

An electrical power distribution system includes a first power bus operating in a first voltage range and a second power bus operating in the first voltage range. A first eFuse circuit selectively couples a power source to the first power bus. A second eFuse circuit selectively couples the power source to the second power bus. A first accumulator is coupled to a first node between the first eFuse circuit and the first power bus. A second accumulator is electrically coupled to a second node between the second eFuse circuit and the second power bus. The first eFuse circuit opens in response to a first electrical fault at the first power bus, and the second power bus is powered with the power source or the first accumulator. The second eFuse circuit opens in response to a second electrical fault at the second power bus, and the first power bus is powered with the power source or the first accumulator.

Embodiments of the present application provide a power supply system and method of a server, an electronic device, and a storage medium. By means of cooperative work of main circuit structures such as a high-voltage battery power master control unit, battery string management and control units, and power conversion string management and control units, power information of each subsystem in the power supply system is collected and analyzed in real time, and the high-voltage battery power master control unit can also issue a corresponding control instruction to each subsystem according to the analysis result so as to realize power control of each subsystem, thereby controlling the total output power of the server. The whole main power utilization power path is simple and reliable, electric energy conversion on a high-voltage direct-current power supply at an input side is not required, the design structure between a high-voltage direct-current power supply inlet and a power utilization inlet of the server is simplified, thus the working efficiency of the power supply system can be effectively improved, and the heat loss is reduced; additionally, when a main power supply system outside the server works abnormally, the power utilization requirement of the server can be ensured, and the conversion efficiency and the working reliability of the power supply system are ensured.

A method for artificial intelligence monitoring and protecting battery performance is provided. The method includes determining whether a temperature and a current of a battery cell of a battery pack are within a limit specification. The method includes obtaining a maximum current power when the temperature and the current of the battery pack are within the limit specification. The method includes performing an operation based on the maximum current power.

A method for operating a battery charging circuit is generally described. The method comprises obtaining a fault condition value and determining that a fault condition is present. The method further comprises setting a freeze signal to a first value based on the determination that the fault condition is present and outputting the freeze signal to a loop control circuit that is configured to inhibit a correction of a battery input current based on the freeze signal. The method further comprises re-obtaining the fault condition value and determining that the fault condition is not present. The method further comprises setting the freeze signal to a second value based on the determination that the fault condition is not present and outputting the freeze signal to the loop control circuit. The loop control circuit is configured to enable a correction of the battery input current based on the freeze signal.

A power supply circuit having a current control mechanism is provided. The power supply circuit includes a charging driver, a plurality of input current processing circuits, a charging circuit and a control circuit. The charging driver includes a plurality of switch components and a driver circuit. The control circuit controls the plurality of input current processing circuits respectively to switch the plurality of switch components. At least one of a plurality of input currents that are supplied by a plurality of external input power sources flows to the driver circuit through at least one of the plurality of switch components. The driver circuit transmits the at least one of the plurality of input currents to the charging circuit, and drives the charging circuit to use the at least one of the plurality of input currents to charge an electronic device.

An on-board battery charger (OBC) of an electric vehicle (EV) receives AC electrical power from a charge station and outputs a DC output current for charging a traction battery of the EV. In response to transients in the AC electrical power while the OBC is receiving the AC electrical power from the charge station and outputting the DC output current, a controller controls the OBC to (i) stop processing the AC electrical power from the charge station and reduce the DC output current and (ii) after the transients have passed, resume processing the AC electrical power from the charge station and increase the DC output current. At a zero-crossing event of the AC electrical power after the transients have passed, the OBC is controlled to resume processing the AC electrical power from the charge station and increase the DC output current.

A short-circuit protection circuit in a battery protection system having a battery, a charge switch and a discharge switch connected in series. The short-circuit protection circuit includes: a drive unit having a first output terminal coupled to a control terminal of the discharge switch and a second output terminal coupled to a control terminal of the charge switch, and configured to output a discharge drive signal through the first output terminal to turn on or off the discharge switch, and output a charge drive signal through the second output terminal to turn on or off the charge switch; and a short-circuit detector configured to perform a short-circuit protection when the short-circuit occurs. One of the charge drive signal, the discharge drive signal and a power supply having a higher voltage is configured to supply power to the short-circuit detector.

A method detects electrical fault states of a removable battery pack and / or an electrical device, in particular a charging device, a diagnostic device or an electrical consumer, that can be connected to the removable battery pack, using a first monitoring unit integrated in the removable battery pack. The method includes measuring a charging or discharge current using a first current measuring apparatus integrated in the electrical device and transmitting the measured current directly or as a converted voltage value to the first monitoring unit of the removable battery pack, and determining, using the first monitoring unit, based on the charging or discharge current and / or the voltage value calculated therefrom, whether the removable battery pack is operating in a permissible operating range.

A smart connection device, a jump starter device, and a battery clamp device are provided. The smart connection device includes a power connection terminal, a load connection terminal, a switch module, and a load detection module. The power connection terminal configured to be electrically connected to a power module. The load connection terminal configured to be electrically connected to an external load. The switch module is electrically connected between the power connection terminal and the load connection terminal. The load detection module is configured to detect a connection state of an external load and an electrical parameter of the external load, and output a corresponding detection signal at a detection signal output terminal of the load detection module. The detection signal is used for controlling the switch module.

A parallel control method for multiple battery packs includes: in response to the multi-battery pack system being in a charging state, acquiring real-time voltages of the battery packs in the multi-battery pack system; determining a first battery pack and a second battery pack based on the real-time voltages, wherein a voltage of the first battery pack is a minimum voltage in the real-time voltages, and a voltage of the second battery pack is a second minimum voltage in the real-time voltages; controlling the first battery pack to be charged; and in response to the voltage of the first battery pack and the voltage of the second battery pack satisfying a predetermined charging condition, controlling the first battery pack and the second battery pack to be simultaneously charged, and analogously continuing such control until the all the battery packs in the multi-battery pack system are simultaneously charged.

A battery system of an electric vehicle includes a plurality of battery packs. Each battery pack includes a plurality of battery cells enclosed within a housing. A battery management device is electrically connected to each of the battery packs and configured to control an electrical output of the plurality of battery packs.

A multi-level inverter using cascaded H-bridge modules, where each module can balance its at least two charge storage elements by means of voltage equalization. Modules are arranged in series into at least one cascade inverter phase with optional center taps, and modules communicate with a control unit by being addressed over at least one serial communication bus. Additional features that can be included in embodiments are the configuration of modules to react to multiple specific addresses in order to increase the maximum output voltage slew rate, metal circuit breaking springs to provide fusing within modules, and the ability to interconnect multiple physically distinct inverters into a single unit. This inverter is predominantly intended for electric vehicle applications, and the optional incorporation of a switching array allows the possibility for power transfer to or from a wide range of voltage sources including other inverters.

A battery system of an electric vehicle includes a plurality of battery packs. Each battery pack includes a plurality of battery cells enclosed within a housing. A battery management device is electrically connected to each of the battery packs and configured to control an electrical output of the plurality of battery packs.

A energy storage system includes a first auxiliary power supply, a battery pack, and a current-limiting protection circuit. The first auxiliary power supply is configured to supply power to a second auxiliary power supply in the battery pack, the second auxiliary power supply is configured to supply power to a power board in the battery pack, and the second auxiliary power supply and the current-limiting protection circuit are connected in series and then connected in parallel to two ends of the first auxiliary power supply. The current-limiting protection circuit includes a drive circuit, a first switching transistor, and a first resistor, one end of the first switching transistor and the first resistor that are connected in series is connected to the first auxiliary power supply, the other end of the first switching transistor and the first resistor that are connected in series is connected to the second auxiliary power supply.

A battery system of an electric vehicle includes a plurality of battery packs. Each battery pack includes a plurality of battery cells enclosed within a housing. A battery management device is electrically connected to each of the battery packs and configured to control an electrical output of the plurality of battery packs.

The present disclosure relates to systems, methods, and devices for controlling charging of vehicles, to avoid charging during charge-adverse time periods or during charge restriction events. This can advantageously reduce cost to vehicles owners, and or provide access to reward incentives. Further, power distribution entities (utility providers) advantageously have increased control over power distribution to avoid over-burdening of power distribution infrastructure. Further, systems and methods for determining or inferring whether a vehicle is connected to a charge station are described, which can be used to inform automatic restriction of vehicle charging.

A battery system of an electric vehicle includes a plurality of battery packs. Each battery pack includes a plurality of battery cells enclosed within a housing. A battery management device is electrically connected to each of the battery packs and configured to control an electrical output of the plurality of battery packs.

A power supply system with a large number of battery modules, wherein each battery module has a first electrical connection and a second electrical connection, via which the battery modules are connected in series in an interconnection branch of the power supply system. Each battery module also has an accumulator which can be connected via a bridge circuit of the battery module to the first electrical connection and the second electrical connection, and to a charging path via which the power supply system can be charged, and to a discharging path via which the power supply system can deliver electrical power to a connected consumer. The power supply system has a switching component to which the charging path, the discharging path and the interconnection branch are connected, and wherein the switching component can connect the charging path and / or the discharging path electrically conductively to the interconnection branch.

A system for suppressing inrush currents is described. The system may include a positive temperature coefficient (NTC) thermistor and a positive temperature coefficient (PTC) thermistor arranged in series between a power source and a battery system to be charged. At a low temperature, while the PTC thermistor provides only minimal resistance to minimize an inrush current, the NTC thermistor provides increased resistance. As the temperature increases, the resistance provided by the PTC thermistor increases as the resistance from the NTC thermistor decreases. The system may be used in conjunction with a battery charging system has at least one current pathway from the power source to the battery system.

A resettable over current protection circuitry (200) for an energy storage system of a vehicle is presented. The resettable over current protection circuitry (200) is configured to be arranged between one or more battery cells (110) and a load (12) and comprises a transistor device (210) configured for controlling an electrical connection between the battery cell (110) and the load (12). The resettable over current protection circuitry (200) further comprises current sensor circuitry (220) for measuring a load current (i12) between the one or more battery cells (110) and the load (12) and control circuitry (230) configured to control the transistor device (210) to break the electrical connection between the one or more battery cells (110) and the load (12) responsive to the load current (i12) being above a first predetermined threshold during a first predetermined time.