324results 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.

A pre-charging circuit for charging a DC-link capacitor is provided. The pre-charging circuit may include a first semiconductor switch to be coupled to a first terminal of a high voltage source, a first inductor to be coupled to the first semiconductor switch and a first terminal of a capacitor, a second semiconductor switch to be coupled to a second terminal of the high voltage source, a second inductor to be coupled to the second semiconductor switch and a second terminal of the capacitor, and a diode coupled to the first semiconductor switch, the second semiconductor switch, the first inductor, and the second inductor, and coupled in parallel with the capacitor.

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 device includes a battery current sense circuit configured to generate a battery current feedback voltage based on a current provided to a battery, a current regulation feedback loop configured to regulate the current provided to the battery based on the battery current feedback voltage and a configurable battery current reference voltage, and a precharge regulation feedback loop configured to regulate the current provided to the battery based on the battery current feedback voltage and a configurable precharge reference voltage. The device also includes a processor configured to set the battery current reference voltage to a first value and set the precharge current reference voltage to a second value. The first value is less than the second value during a transition state.

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.

A system and method for contextually aware charging of mobile devices. In accordance with an embodiment, the system comprises a base unit having one or more charger coils, for use in inductive charging; and one or more components within the base unit for providing context-aware connectivity and / or other capabilities with a mobile device. When a mobile device having one or more receiver coils or receivers associated with, is placed in proximity to the base unit, the charger coil is used to inductively generate a current in the receiver coil or receiver associated with the mobile device, to charge or power the mobile device, and at the same time the context-aware connectivity and / or other capabilities are initiated. In accordance with various embodiments, the base unit and / or the mobile device can adapt to a location or use model of interest to provide different functionalities, applications and features.

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.

The present application discloses a control method, apparatus, device, and system for a charging and discharging circuit, and a storage medium. A neutral wire of a motor in the charging and discharging circuit is connected to a charging and discharging switching bridge arm group, the method including: acquiring a first current value in the neutral wire in real time during charging and discharging of a power battery by the charging and discharging circuit; and regulating the magnitude of the first current value according to the first current value, first peak current, and second peak current, where the first peak current is known peak current of the charging and discharging switching bridge arm group, and the second peak current is known peak current in the neutral wire. The control method for a charging and discharging circuit of the present application regulates the magnitude of the first current value according to the first current value in the neutral wire, the known peak current of the charging and discharging switching bridge arm group, and the known peak current of the neutral wire, and can thus timely adjust the current when an abnormality in the current value occurs during charging and discharging of the power battery, thereby avoiding damage to the circuit.

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.

An adaptive tracking clamp acting as an extra regulation loop that limits excursions, such as at a transition from one regulation loop to another. The adaptive tracking clamp is dynamically positioned relative to the level of the regulation loop in control. In case of fast transient events, the loop that is initially in control will quickly raise the output demand but in a first time get limited by the adaptive tracking clamp level; in a second time the adaptive tracking clamp algorithm incrementally increases the output demand until handing off control to the other regulation loop.

A battery system includes a plurality of batteries including a plurality of chargeable battery cells, and a bus to which the plurality of batteries are selectively connected in parallel. A battery management system monitors operating limits of the chargeable battery cells of the plurality of batteries, generates a signal indicating that an operating limit of a chargeable battery cell of a battery among the plurality of batteries is being reached for a foldback operation of the battery, and initiates the foldback operation. A controller is configured to generate a signal to disconnect the battery associated with the signal of the battery management system from the bus.

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 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.

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.