423results about "End cell switching arrangements" patented technology

An electrical system with selectable output voltage is disclosed. An example system includes a first set of energy storage modules, a second set of energy storage modules, a choke connected to the first set of energy storage modules and the second set of energy storage modules, and a switch configured to switch between a first state and a second state. Upon switching the switch to the first state, the first set of energy storage modules are connected in parallel with the second set of energy storage modules to provide a first voltage to at least one output. Upon switching the switch to the second state, the first set of energy storage modules are connected in series with the second set of energy storage modules to provide a second voltage to the at least one output.

An electrical system with selectable output voltage is disclosed. An example system includes a first set of energy storage modules, a second set of energy storage modules, a choke connected to the first set of energy storage modules and the second set of energy storage modules, and a switch configured to switch between a first state and a second state. Upon switching the switch to the first state, the first set of energy storage modules are connected in parallel with the second set of energy storage modules to provide a first voltage to at least one output. Upon switching the switch to the second state, the first set of energy storage modules are connected in series with the second set of energy storage modules to provide a second voltage to the at least one output.

A battery assembly configured to be operable during charging or discharging to distribute a common current delivered to or from a common bus and a use of at least one analog battery module. Also disclosed is an analog battery module for distributing current between a plurality of battery strings. Each analog battery module is connectable in series with a respective battery string. The distribution of the current between the battery strings is at least partially given by the respective voltages of the analog battery modules.

The invention provides a high-low voltage isolated energy storage battery management system, and relates to the technical field of battery management systems or other related fields, the system comprises a power supply isolation unit, a high voltage acquisition unit and a communication isolation unit, the power supply isolation unit is used for providing working voltage for the high voltage acquisition unit, and the communication isolation unit is used for providing communication voltage for the high voltage acquisition unit; the power supply isolation unit comprises a low-voltage power supply, a first transformer, a voltage conditioning circuit, a second transformer, a diode module and a voltage stabilizer, and the high-voltage acquisition unit is used for acquiring battery cluster information, converting a signal format of the battery cluster information into a digital signal and transmitting the battery cluster information to the communication isolation unit; the communication isolation unit is used for transmitting the battery cluster information to the micro-processing chip, the micro-processing chip generates a battery cluster control instruction based on the battery cluster information, and the communication isolation unit comprises a third transformer, a fourth transformer and a bridging chip. According to the invention, the technical problem that high-voltage and low-voltage isolation cannot be carried out on a high-voltage energy storage battery management system in the prior art is solved.

A power tool is provided including a power supply interface receiving a removable battery pack, a brushless direct current (BLDC) motor including a rotor and a stator, and a multi-phase inverter bridge circuit. A controller is provided to output drive signals to the inverter bridge circuit to control flow of current from to the motor, where each drive signal is activated within each corresponding phase of the motor within a conduction band. The controller is configured to control a length of the conduction band at a variable value within a first torque range below a torque threshold and at a substantially constant value within a second torque range above the torque threshold. The torque threshold is greater than approximately 1 Newton-meters and the motor produces a maximum power output of at least approximately 1250 watts at the torque of approximately 1 Newton-meters.

Disclosed in the present application are a control circuit and method for an energy storage system. The control circuit for an energy storage system comprises a battery cell module, a control module and a reversing module, wherein the battery cell module, the control module and the reversing module are sequentially connected; the battery cell module comprises n modular battery cell control units, each modular battery cell control unit comprising a battery cell, a first switch and a second switch; the battery cell and the first switch are connected in series and are then connected in parallel to the second switch; n is a positive integer; the first one of the first switches and the first one of the second switches are connected to serve as a first end of the battery cell module, and an n-th one of the battery cells and an n-th one of the second switches are connected to serve as a second end of the battery cell module; and the control module is in communication connection with the modular battery cell control units and the reversing module, and the control module is used for controlling the switching on or off of a first reversing switch, a second reversing switch, a third reversing switch and a fourth reversing switch.

The invention discloses a logging underground battery selection device, which belongs to the technical field of petroleum underground operation, and comprises a main framework, a battery selection module is arranged outside the main framework, and a rib frame is arranged on one side, far away from the battery selection module, of the outer part of the main framework. According to the invention, the dual-battery selection system, real-time monitoring, intelligent switching and balanced maintenance are adopted, so that the batteries can continuously and stably supply power in a complex and changeable underground environment, and the problems of unstable energy supply and limited cruising ability of a traditional single-battery power supply system are solved; according to the double-battery selection system, by optimizing battery combination and selection strategies, efficient utilization and backup of energy are achieved, the energy requirement of underground equipment under long-time and high-load operation is met, the operation efficiency is improved, the operation safety is enhanced, simultaneous selection and optimization of two sets of batteries are achieved, and the energy utilization rate of the underground equipment is increased. Therefore, the stability and reliability of underground operation are improved.

The invention discloses a high-voltage switching control system and a high-voltage switching control method for a double-battery-pack vehicle type, which are used for controlling the switching between a main power battery pack and a standby power battery pack equipped on an electric vehicle, and the main power battery pack and the standby power battery pack are connected in parallel and then are connected to a load main loop to supply power to a load. A main IGBT module is arranged in series in a high-voltage loop where the main power battery pack is located, and a standby IGBT module is arranged in series in a high-voltage loop where the standby power battery pack is located; the IGBT driving module and the control module are correspondingly matched with the main IGBT module and the standby IGBT module respectively; and the control module determines a current PWM duty ratio according to a current voltage value and a current current value of a load main loop and / or a power switching instruction sent by a driver, and controls the on-off of the main IGBT module and the standby IGBT module according to the current PWM duty ratio, so that the main power battery pack and the standby power battery pack are switched to supply power to the load.

The present invention provides an energy storage device and a circuit breaker control method for the energy storage device. The energy storage device comprises a main circuit formed by a plurality of battery modules connected in series in sequence. The energy storage device can be connected with an external device to form a circuit. Each battery module comprises a battery unit, a control unit and a switch group. The energy storage device is further provided with a detection module, a circuit breaker protection module connected in series with the main circuit of the energy storage device and a circuit breaker detection module. The detection module is configured to detect the working state of the energy storage device, and turn on the circuit breaker protection module when it is detected that the energy storage device fails. The circuit breaker protection module is configured to output a circuit breaker driving power supply after being turned on, and drive the circuit breaker in the main circuit of the energy storage device to disconnect through the circuit breaker driving power supply, so as to disconnect the connection circuit between the energy storage device and the external device. The circuit breaker detection module is configured to perform sampling current detection on the circuit breaker protection module at a regular time, and output a shunt failure signal when the sampling current does not meet a preset condition.

A new energy elevator belongs to the technical field of elevators, and includes an elevator control device and an elevator power supply system. The elevator power supply system includes a photovoltaic power supply device, a power switching circuit system, a mains power supply, a power supply output controller, a first storage battery, and a second storage battery; the power switching circuit system includes a first power switching switch, a second power switching switch, and a third power switching switch connected and controlled by the power supply output controller, and the connection end of the first power switching switch is connected to the photovoltaic power supply device, the first storage battery, and the second storage battery; the connection end of the second power switching switch is connected to the third power switching switch, the first storage battery, and the second storage battery; the connection end of the third power switching switch is connected to the elevator control device and the mains power supply. The elevator power supply system integrates photovoltaic power supply, dual battery energy storage, and intelligent switching technology, which not only improves the reliability and energy efficiency of the elevator power supply, but also reduces the dependence on the mains power supply, and can ensure the green and low-carbon operation of the elevator.

A battery swap trolley and a battery swap system. The battery swap trolley comprises a main body (1), a fixed frame (2), a movable frame (3) and a movable device (4), wherein the fixed frame (2) is fixed to the main body (1), and is configured for placement of a battery (5); the movable frame (3) is mounted to the movable device (4), is located above the fixed frame (2) and overlaps the fixed frame (2), and the movable frame (3) is configured for placement of the battery (5); during a swap process of the battery (5), the movable frame (3) can horizontally move at a first level above the fixed frame (2), and perform lifting motion between the first level and a second level of the fixed frame (2); and the movable device (4) is mounted to the main body (1), and is connected to the movable frame (3), and the movable device (4) is configured to drive the movable frame (3) to perform horizontal movement and lifting motion. The battery swap system comprises a transfer robot and the battery swap trolley, wherein the transfer robot comprises a battery compartment (6). When a battery (5) in the battery compartment (6) is swapped, the fixed frame (2) or the movable frame (3) of the battery swap trolley is aligned with the battery compartment (6). The battery swap trolley and the battery swap system can reduce the footprint of the battery swap trolley.

The invention discloses building construction measuring equipment, and belongs to the technical field of measurement, and the building construction measuring equipment comprises a connecting column, one end of the connecting column is connected with a first moving mechanism, the first moving mechanism is connected with a second moving mechanism, and the lower end of the second moving mechanism is connected with a laser level meter. The fixing plate is inclined, so that the rainfall can flow to the water inlet on the fixing plate, the rainfall can be collected and stored by the water inlet, and then the rainfall is sprayed out through the connecting column to clean the laser gradienter; the moving path of the laser level meter on the second moving mechanism can be controlled by controlling the rotating speed and the rotating direction of the worm, the whole device can be installed at an absolutely safe position, then the laser level meter is sent to a measuring position through moving, the laser level meter is safer to use, and the measuring range of the device can be increased.

The present invention relates to a power management method for portable first aid equipment, comprising: a main control chip sending a power control signal to a power switching circuit, and the power switching circuit switching the power supply according to the power control signal; the main control chip sending a charging control signal to a charging management circuit, and the charging management circuit switching the charging path according to the charging control signal. The present application realizes that when the power source is replaced, the equipment does not interrupt the work, thereby ensuring the life safety of the patient. The present invention also relates to a power management device for portable first aid equipment and portable first aid equipment.

The invention is suitable for the field of energy management, and discloses a double-battery power supply switching method, terminal equipment and a storage medium. The double-battery power supply switching method comprises the following steps: detecting a first electric quantity of a first main battery; if the first electric quantity is lower than the preset electric quantity threshold value, power is supplied through the standby battery; and if it is detected that the first main battery is replaced by the second main battery, supplying power through the second main battery, and stopping using the standby battery to supply power. Through the double-battery power supply switching method, when the electric quantity of the first main battery is lower than the preset electric quantity threshold value, the standby battery is automatically switched to supply power. According to the mechanism, the camera flashlight can be seamlessly switched to the standby power supply when the electric quantity of the main battery is insufficient, so that equipment shutdown caused by exhaustion of the electric quantity of the battery is effectively avoided, and the working continuity of the camera flashlight is improved.

The invention relates to the technical field of main and standby battery switching devices, and discloses a communication base station main and standby battery switching device which comprises a main battery, a standby battery and a zero-delay arc-free switcher connected with the main battery and the standby battery in parallel. Wherein the zero-delay arc-free switcher is internally provided with a mechanical action device for switching an input power supply channel so as to select to use the main battery or the standby battery to supply power, and the zero-delay arc-free switcher is also provided with a group of output electrodes; and a capacitor connecting part for switching is fixedly arranged in the zero-delay arc-free switcher. According to the invention, the capacitor connection part for switching is used as an uninterruptible power supply unit in the switching action process of the mechanical device, so that the power supply within the shortest three seconds can be provided, the stable switching connection of the mechanical device is ensured, and the low-delay power supply requirement can be effectively met.

A battery assembly and a control unit for aiming at outputting a target voltage during charging or discharging and a method, a battery assembly and a control unit for maintaining a target voltage of a battery assembly during charging or discharging are disclosed. The battery assembly (100) comprises a first battery module (110) configured to receive a first signal representing a first voltage to be output over the first battery module (110), wherein the first signal is configurable to represent a range of voltages capable of being output over the first battery module (110). Moreover, the battery assembly (100) comprises a plurality of second battery modules (160-180). Each second battery module (160, 170, 180) of the plurality of second battery modules (160-180) is configured to receive a respective second signal, representing a respective configuration, which indicates whether said each second battery module (160, 170, 180) is to be switched-on or bypassed.

The invention discloses an independent wind and light storage combined control system, which comprises a core control module, a wind power generation module, a photovoltaic power generation module, an energy storage module, an ADC (Analog to Digital Converter) acquisition module and a display module, the wind power generation module and the photovoltaic power generation module respectively adopt a wind power generator and a photovoltaic panel to convert wind and light resources into electric energy to be supplied to the energy storage module, so that the endurance of the device is realized; the energy storage module comprises a storage battery and a standby battery, the storage battery supplies power to the main control module and the load, two voltage thresholds are set for the storage battery, and when wind and light resources are too few and the electric quantity of the storage battery is within the set voltage threshold interval, the system can be automatically switched to the standby battery for endurance of the device and the load. The system is reasonable in design, stable in work, good in performance, fast in data detection, simple in calculation, stable in output and capable of being controlled in real time, the output of each power supply can be adjusted according to weather conditions and the state of the storage battery, and a standby power supply can be switched to be used by a load.

A power supply device comprises a first battery and a second battery, and further comprises a first switching unit electrically connected between the first battery and a load and used for selecting the first battery to supply power to the load; the second switching unit is electrically connected between the second battery and a load and is used for selecting the second battery to charge the load; the processing unit is electrically connected to the first battery and the second battery and used for detecting the electric quantity of the first battery and the electric quantity of the second battery, and when the electric quantity of the second battery is larger than a first preset value, the first switching unit is controlled to be disconnected, the second switching unit is controlled to be connected, and the second battery can supply power to a load; meanwhile, the electric quantity of the first battery is detected, and when the electric quantity of the first battery is smaller than a second preset value, the second battery is controlled to charge the first battery; and when the electric quantity of the first battery is greater than a third preset value, the second battery is controlled to stop charging the first battery, so that the charging efficiency and the working stability of the equipment are improved.

The present disclosure provides a battery system and a controlling method of the same. The battery system includes a plurality of rechargeable battery packs, and includes a first battery pack that is rechargeable, a second battery pack that is rechargeable independently of the first battery pack, a first switching element that switches the first battery pack between at least a charging node and a discharging node, a second switching element that switches the second battery pack between at least the charging node and the discharging node, and a controller that controls switching states of the first switching element and the second switching element based on usage states and states of charge of the first battery pack and the second battery pack, and thus it is possible to effectively charge a high capacity and high output battery pack.

The invention relates to a power battery safety monitoring all-in-one low-voltage power supply and lithium battery energy complementing method, which is characterized in that an all-in-one controller is additionally arranged on a connecting circuit of a power battery, a power battery BMS (Battery Management System), a lithium battery and a lithium battery BMS, and the all-in-one controller is provided with a backup power supply and a DC / DC (Direct Current / Direct Current) converter for charging the lithium battery; low-voltage electricity is supplied to the power battery safety monitoring system through the lithium battery, power is supplied to a non-power battery through the DC / DC converter, and therefore the problems that due to the fact that the DC / DC converter is small in power and often needs to operate excessively, the fault rate is high, and monitoring cannot be achieved are solved; meanwhile, on the whole connecting circuit, the backup power supply of the all-in-one controller and the DC / DC converter used for charging the lithium battery are combined, low-power-consumption, high-stability and safe timing awakening power supply is achieved, energy supplementation is conducted on the lithium battery, and the whole circuit structure and the control method are simple and compact and high in safety and reliability.

The invention relates to the field of battery management, and discloses a dual-battery electric quantity management method and system for a dual-rotor unmanned aerial vehicle, and the method comprises the steps: obtaining a first output voltage of a first voltage stabilization unit when the unmanned aerial vehicle flies by using a first battery, and determining a voltage drop range of the first output voltage relative to a standard output voltage, when the voltage drop amplitude is greater than or equal to a preset voltage drop amplitude, acquiring a first power consumption rate; when the power consumption rate is greater than or equal to a preset consumption rate, rapidly switching the power supply of the unmanned aerial vehicle from the first battery to a second battery; and when the power consumption rate is smaller than the preset consumption rate, gradually switching the power supply of the unmanned aerial vehicle from the first battery to the second battery. In the first time period, the output power of the first voltage stabilizing unit is uniformly reduced, and the output power of the second voltage stabilizing unit is uniformly increased. According to the invention, the electric quantity of the double batteries of the unmanned aerial vehicle can be efficiently managed.

The invention relates to the field of equipment detection, in particular to an automatic charging and discharging and parameter monitoring system and method for a direct-current storage battery. The system comprises a storage battery unit group which comprises at least one single storage battery and is used for providing a direct-current power supply; the standby storage battery unit is connected with the storage battery unit group in parallel; the monitoring modules are mounted at the positive and negative ends of each single storage battery; the intelligent control switch is matched with the monitoring module, receives an instruction of the central control system, and is used for controlling the switching operation of putting in and quitting the single storage battery; the charging and discharging control module is matched with the intelligent control switch and is used for carrying out automatic charging and discharging operation on the withdrawn single storage battery; and the central control system is used for receiving the monitoring data, controlling the intelligent switch and the charging and discharging control module, and sending an operation instruction. According to the invention, automatic charging and discharging operation of the single storage battery is realized, the efficiency of maintenance work is obviously improved, manual intervention is reduced, and the maintenance cost is reduced.

The present invention relates to the technical field of battery switching. Disclosed is a battery switching device based on remaining power level. Specifically, the battery switching device based on the remaining power level comprises: a protective case, limiting posts being arranged on both sides of the bottom in the protective case, battery bodies being placed in the limiting posts, connecting end portions being arranged on both sides of the outer wall of each battery body, and a power receiving plate being arranged on one side of one connecting end portion; and power level detectors mounted above the battery bodies, an alarm being mounted on one side of each power level detector, and a single-chip microcontroller being mounted between the limiting posts. According to the battery switching device based on the remaining power level, the remaining power levels of the two battery bodies can be respectively detected by means of the power level detectors, the single-chip microcomputer can receive detection data of the power level detectors and determine the amount of the remaining power of the two battery bodies, and the alarm can give an alarm when the remaining power level of a battery is lower than a preset value range to remind a staff to charge the battery, thereby avoiding power depletion.

The invention provides a multifunctional combined use method of a high-expansibility mobile power supply, relates to the technical field of mobile power supplies, and realizes modularization, multiple functions and high reliability of the power supply by constructing a combined system consisting of a main power supply module and a plurality of independent function expansion modules. The main power supply module comprises a physically reconfigurable energy storage array unit, an energy partition isolation management system, a multi-node energy routing core and a rotary encoder, and has a dynamic topology autonomous evolution capability and a fault self-healing mechanism. A multi-mode biological heuristic sensor fusion unit and a multi-stage phase change micro-cavity cooling structure are integrated in the expansion module, so that state data can be acquired in real time and thermal stability can be guaranteed. According to the invention, the adaptability, energy supply continuity and user interaction flexibility of the mobile power supply system in a complex environment are improved, and the mobile power supply system is suitable for application scenarios with high requirements on energy safety and reliability, such as field operation, military communication, disaster rescue and the like.

A method of manufacturing a battery pack including the creation of a support board for enabling conversion of the battery pack from providing a first voltage to providing a second voltage. The support board is created by injection molding about a precut set of power traces for coupling a converting element to a plurality of battery cells. The power traces couple the plurality of battery cells to a set of battery pack terminals. The support board may be mechanically coupled to a battery cell holder.

The invention relates to a quick-charging mobile power supply and an application method thereof, the quick-charging mobile power supply comprises a first quick-charging assembly and a second quick-charging assembly, a housing of the second quick-charging assembly is internally provided with an accommodating cavity, and the housing of the second quick-charging assembly is provided with a cover body for closing or opening the accommodating cavity; a first battery pack is arranged in a shell of the first fast charging assembly, a first charging interface and a first electricity taking interface are formed in the surface of one side of the shell of the first fast charging assembly, and a first power management circuit board is arranged in the shell of the first fast charging assembly; a second battery pack, an interface sliding assembly and a second power management circuit board are arranged in a shell of the second quick charging assembly, the interface sliding assembly comprises a sliding seat, a sliding block and a sliding block locking unit, and the sliding block is provided with a first connector in which the first charging interface is inserted and a second connector in which the first power taking interface is inserted; and the first quick charging assembly and the second quick charging assembly can be selected to be independently used or combined for use, so that the product applicability is improved.

The invention relates to the technical field of automobile batteries, in particular to a novel high-magnification hybrid power supply with short-circuit protection. The device is characterized by comprising a voltage conversion module, a common multiplying power battery and a low-temperature high-multiplying power battery, the low-temperature high-multiplying power battery comprises a short-circuit protection module, the voltage conversion module comprises a bidirectional DC / DC unit I and a bidirectional DC / DC unit II, the front end of the bidirectional DC / DC unit I is connected with an interface II, the rear end of the bidirectional DC / DC unit I is connected with the front end of the bidirectional DC / DC unit II, and the interface II is connected with the interface II. The rear end of the first bidirectional DC / DC unit is connected with the third interface, and the rear end of the second bidirectional DC / DC unit is connected with the first interface. The first interface is connected with the common multiplying power battery, the third interface is used for being connected with a photovoltaic power generation assembly, the second interface is connected with the low-temperature high-multiplying power battery, and the second interface is used for being connected with related parts of an automobile. The hybrid power supply can act on an internal combustion engine of more than 8KW, can meet the normal use of an automobile, and cannot start the automobile due to excessive discharge of a battery when an air conditioner is stopped and used.

The utility model relates to a battery replacement vehicle and a battery replacement system. The battery replacement vehicle comprises a main body, a fixed frame, a movable frame and a movable device, the fixing frame is fixed on the main body and is used for placing a battery; the moving frame is mounted on the moving device, is positioned above the fixed frame, is overlapped with the fixed frame and is used for placing a battery; in the battery replacement process, the movable frame can horizontally move above the fixed frame at a first height and do lifting motion between the first height and a second height of the fixed frame; the moving device is installed on the main body and connected with the moving frame, and the moving device is used for driving the moving frame to move horizontally and ascend and descend. The battery replacement system comprises a carrying robot and a battery replacement vehicle. The carrying robot comprises a battery bin. When the battery in the battery compartment is replaced, the fixed frame or the movable frame of the battery replacement vehicle is aligned with the battery compartment. According to the scheme, the ground space of the battery replacement vehicle can be saved.

The utility model belongs to the technical field of energy storage and power utilization, and particularly discloses a power supply switching circuit for energy storage and power utilization. Comprising a commercial power grid inlet wire, a commercial power grid switch cabinet, a first transformer, a second transformer, a first power distribution cabinet, a second power distribution cabinet, switches QF1, QF2, QF3, QF4 and QF5, a first isolator, a first energy storage inverter, a first energy storage battery, a second isolator, a second energy storage inverter, a second energy storage battery and a connection relation thereof. According to the utility model, through the switch group in the power supply switching cabinet, power utilization switching can be carried out under different power utilization conditions, the electric energy utilization rate of the energy storage battery pack is fully improved, and the power supply reliability is ensured.

An electrical energy storage system has a plurality of primary energy storage units. Each primary energy storage unit has an inherent internal resistance. The system further includes one or more additional energy storage units. At least one additional energy storage unit further has a pseudo resistance. One or more controllers control the charging and discharging of each of the primary and additional energy storage units. Control of the charging and discharging of the, or each, additional energy storage units with the pseudo resistance is distinguished from the charging and discharging of each primary energy storage unit, and is distinguished from the charging and discharging of any additional energy storage unit that lacks a pseudo resistance.