485results about "End cell switching arrangements" patented technology

An auxiliary battery for portable devices that can be used for a variety of applications with high power capacity. The auxiliary battery includes a power input section for receiving electric power from an external power source, a power storage section having a secondary battery for receiving a charge current from the power input section, a power output section having one or more output terminals for producing electric power at output terminals, and an power switch circuit for selectively inputting electric power to the power output section either from the power input section or from the power storage section.

The present disclosure includes a protective sleeve assembly and a battery module, wherein the protective sleeve assembly includes a frame and a terminal fixing plate, a terminal circuit board and a connector port are arranged on the terminal fixing plate, an end of a conduction sheet is connected to the terminal circuit board, the other end of the conduction sheet is in a limiting hole of the terminal fixing plate; the battery module includes a upper cover, a lower cover and a charge-discharge control circuit board, a conduction electrode is arranged on the charge-discharge control circuit board and connected with a battery. When the mobile phone is fixed with the protective sleeve assembly, a special port of the mobile phone is transformed into a general port by the conversion circuit of the terminal circuit board, so it's easy to charge the mobile phone by the general port.

Provided are an intelligent, environmentally friendly and energy saving cell power supply system and method. The system comprises a temperature detection unit used for detecting the temperatures of the ambient environment where a cell set is located; a cell management system used for cell physical parameter detection, cell state estimation and cell charge and discharge control, and providing cell state information for a power switching control unit; a cell set used for providing energy; and the power switching control unit for receiving temperature and cell state information, performing logic analysis and realizing cell set switching. The system can accurately switch a cell set according to monitored environment temperatures, cell state information provided by the cell management system and power demands, and make full advantages of operating characteristics of two cell sets, thereby increasing the cell utilization efficiency and service life, and reaching the effects of energy conservation and environment protection.

The invention discloses a battery control method for a mobile terminal. The mobile terminal comprises a first battery and a second battery, which respectively have two asynchronous states of power supply and charging. The method comprises the following steps: when the connection of a charging power source is recognized, periodically detecting the remaining capacity of the first battery and the remaining capacity of the second battery; determining whether the remaining capacity of the first battery is greater than the remaining capacity of the second battery; if so, controlling the first battery to supply power to the mobile terminal, and controlling the charging power source to charge the second battery; otherwise, controlling the second battery to supply power to the mobile terminal, andcontrolling the charging power source to charge the first battery. The invention also discloses a mobile terminal and a readable storage medium. The method can solve the problem that when the user connects the mobile terminal to the charger, the battery loss is accelerated to be unsafe caused by that the battery is directly charged at full power or the battery is charged and discharged at the sametime, thereby prolonging the service life of the battery and improving the safety of the terminal.

For providing a reliable voltage adjusting apparatus in low cost, a low-voltage control apparatus controls a high-voltage power supply circuit to be switched power off by transmitting a power-off signal through a second communication line arranged between the high-voltage power supply circuit and itself through an isolation unit when an information signal from an equalizing apparatus is not transmitted within a predetermined first malfunction judging period. The equalizing apparatus stops an equalizing process in itself when the information signal from the low-voltage control unit

The invention provides a smart double-battery system. The smart double-battery system comprises a charging unit, a power source management unit, a main battery, an auxiliary battery, a double-battery management unit, an application processor, a first precision resistor and a second precision resistor. The charging unit is connected with the power source management unit and is also connected with the double-battery management unit through the first precision resistor. The power source management unit comprises a lithium battery. One end of the main battery is connected with the double-battery management unit and the application processor. One end of the auxiliary battery is connected with the double-battery management unit and the application processor. The other end of the main battery is connected with one end of the auxiliary battery and then is connected with the ground terminal of the power source management unit through the second precision resistor. The application processor is connected with the double-battery management unit and the power source management unit. The invention further relates to a switching over and charging method of the double batteries. The smart double-battery system and the switching over and charging method of the double batteries have the advantages that the batteries are switched over accurately and the utilization rate of the batteries is improved.

The invention relates to the field of electric vehicle equipment, in particular to a battery pack switching control device and method for an electric vehicle. In order to solve the problems existing in the prior art, the switching control device and method are provided. When a BMS detects that one of battery packs is not suitable for supplying power to the electric vehicle, a switching command is sent to a contactor control unit through a PCU, at the moment, the first battery pack and the second battery pack are controlled to be connected and disconnected through turn-on and turn-off of two main negative contactors, and the two battery packs alternately work independently. The device comprises the first battery pack, the second battery pack, the BMS, the PCU and the contactor control unit. When the contactor control unit receives the command of the PCU, the first battery pack or the second battery pack is connected, and the first battery pack or the second battery pack is connected with a power use device; and when the switching command of the PCU is received, the first battery pack and the second battery pack are controlled to be switched to each other.

According to one embodiment, the first power supply circuit of a main unit includes a first recharging controller which sets a first battery at a first voltage, and is powered by a second voltage applied by an AC adaptor and higher than the first voltage, and first system power supply which is powered by the AC adaptor or first battery, and applies a third voltage lower than the first voltage. The second power supply circuit of an auxiliary unit includes a second recharging controller and second system power supply. The second recharging controller sets a second battery at a fourth voltage applied by the first system power supply and lower than the third voltage, and is powered by the third voltage when the auxiliary unit is attached to the main unit. The second system power supply is powered by the first system power supply or second battery.

The invention relates to a method and device for controlling the charging of a terminal device. The method includes the steps of determining whether a first charging chip currently charging a battery needs to be switched to a second charging chip waiting for charging the battery or not when the battery of the terminal device is charged, and if it is determined that the first charging chip needs to be switched to the second charging chip, controlling the first charging chip to stop charging the battery and starting the second charging chip to charge the battery. According to the technical scheme, the first charging chip can be switched to the second charging chip for charging the battery when the first charging chip does not produce a lot of heat yet, and it is avoided that the first charging chip produces a lot of heat when the charging time is too long; the second charging chip continues to charge the battery, and therefore the charging current of the second charging chip does not need to be reduced, and the charging efficiency of the charging chips is improved.

The invention relates to an energy-storage power supply system and an energy-storage power supply method. The real-time voltage value and the real-time current value of each single battery in use and the conversion time of the real-time voltage value from a first threshold to a second threshold are acquired; the actual capacity value of each single battery in use is worked out based on the real-time voltage value, the real-time current value and the conversion time; the actual capacity value and a preset capacity value are compared so as to judge whether the capacity of each single battery in use decreases and whether the capacity meets the working standard; and further the power supply status of a main battery module and the power supply status of a spare battery module are controlled. Thus, that the original voltage parameter is not subject to change is ensured, overall replacement of the batteries or the power supply system is not needed, and the working life of the whole battery pack can be prolonged effectively.

The present invention puts forward a smart lock and a power supply system thereof. The power supply system can supply power through two modes. One mode is characterized in that electric energy is stored on a capacitor C2 after being generated through a hand-operated power generation apparatus and via an energy conversion unit, so as to supply power to a subsequent load. The other mode is characterized in that a power supply control unit selects one pack from battery packs for supplying power to a load by controlling transistor switches Q1 and Q2. When a voltage outputted by the power generation apparatus is higher than a certain threshold value, the power supply system automatically gives priority in use of the electric energy provided by the power generation apparatus. According to the smart lock, a traditional keyboard system is changed into a two-key keyboard system, so that passwords can be entered conveniently in a dark environment without an illumination circuit, thereby greatly reducing power consumption. Through adoption of the smart lock and the power supply system in the present invention, power supply efficiency is improved, power supply time is prolonged, and the system can still continue working through the power generation apparatus in the case that the smart lock is completely out of power, thus the biggest usage inconvenience problem of an electronic smart lock is solved, and the practical value of the smart lock is greatly improved.

A power supply apparatus includes a plurality of power storage modules that are connected in parallel and a backup power storage module that is connected in parallel with the plurality of power storage modules. When charging or discharging of at least one of the power storage modules is disabled, charging of the other power storage modules is inhibited, discharging of the backup power storage module is permitted, states of charge of the backup power storage module and the other power storage modules are detected, and charging of the backup power storage module and the other power storage modules is permitted in accordance with the detected states of charge.

One embodiment of the present invention provides a dual-battery power supply circuit. The dual-battery power supply circuit comprises a primary battery, a backup battery, a switch module, a PMOS tube and a resistor. The positive electrode of the primary battery is connected with the power supply terminal of a mobile terminal. The negative electrode of the primary battery is connected with a common ground. The negative terminal of the mobile terminal is connected with the common ground. The positive electrode of the backup battery is connected with the source electrode of the PMOS tube, and is connected with the grid electrode of the PMOS tube via the resistor. The negative electrode of the backup battery is connected with the common ground. The drain electrode of the PMOS tube is connected with the power supply terminal of the mobile terminal. One end of the switch module is connected with the grid electrode of the PMOS tube, and the other end of the switch module is connected with the common ground. When the primary battery does not supply the power, the switch module is switched on. When the primary battery supplies the power, the switch module is switched off. According to the embodiments of the present invention, the power-off problem of the mobile terminal during the battery replacement process of the power supply circuit in the prior art can be solved.

The embodiment of the invention provides a terminal and a dual-battery power supply method thereof. The method comprises the following steps: detecting an electric quantity difference between a first battery and a second battery; if it is detected that the electric quantity difference is larger than a first threshold or smaller than a second threshold, adjusting power supply statuses of the first battery and the second battery, so that the electric quantity difference is within a preset range; and returning to the operation of detecting the electric quantity difference between the first battery and the second battery. The terminal and the method provided by the embodiment of the invention have the advantages that the electricity quantity difference between the two batteries of the terminal is detected, and when the electric quantity difference is larger than the first threshold or smaller than the second threshold, the power supply statuses of the two batteries are adjusted to maintain a balance between electricity quantities of the two batteries, so that the electricity quantity utilization rates of the batteries can be effectively improved, and normal operation of various power-consuming modules in the terminal can be guaranteed.

The embodiment of the invention provides a bluetooth earphone with continuous power supply, and belongs to the technical field of electronic products. The bluetooth earphone is connected with a first battery, the first battery is arranged at the outer side of the bluetooth earphone, the bluetooth earphone comprises a bluetooth master control circuit, an electronic switch circuit, a second battery, and a power supply interface, the second battery is embedded into the bluetooth earphone, the power supply interface is used for being connected with a power supply, the power supply interface and the electronic switch circuit are connected with the bluetooth master control circuit, the power supply interface, the first battery, and the second battery are connected with the electronic switch circuit, and the electronic switch circuit is used for automatically selecting the first battery, the second battery, or the power supply to provide electric energy to the bluetooth master control circuit. According to the bluetooth earphone, electric energy supply of the bluetooth earphone can be effectively guaranteed.

The invention relates to a large power automatic switching type vehicle starting power supply which belongs to the technical field of power supplies. The vehicle starting power supply comprises a power supply housing, a storage battery and a master control circuit board. The master control circuit board comprises an MCU (Micro controller unit), an LCD display module, a press key control module, a power charging control module, an external output module and a vehicle starting module. The LCD display module, the press key control module, the power charging control module, the external output module and the vehicle starting module are all electrically connected with the MCU control module. The MCU is further electrically connected with a low temperature heating module and a high temperature warning module. The vehicle starting module comprises a 12V output unit, a 24V output unit, an automatic detection unit for voltage, an LED indication control unit, an automatic switching unit for voltage, an auxiliary converting unit for voltage and a forced switching unit for voltage. The vehicle starting power supply is suitable to start different vehicles and when used, the power supply automatically detects the voltage of a vehicle storage battery and automatically switches to a corresponding voltage gear according to the voltage of a storage battery required to start a vehicle. In this manner, overall intelligent switching control can be achieved and when a storage battery is damaged or removed, people can manually operate to switch different voltage gears in a forced manner.

A power tool system (1) includes a first power tool (10A1) having a first power tool rated voltage, a second power tool (10A2, 10A3, 10B) having a second power tool rated voltage that is different from the first power tool rated voltage, and a first battery pack (20A4) coupleable to the first power tool (10A1) and to the second power tool (10A2, 10A3, 10B). The first battery pack (20A4) is switchable between a first configuration having a first battery pack rated voltage that corresponds to the first power tool rated voltage such that the first battery pack enables operation of the first power tool (10A1), and a second configuration having a convertible battery pack rated voltage that corresponds to the second power tool rated voltage (10A2) such that the battery pack enables operation of the second power tool (10A2, 10A3, 10B).

A battery control unit includes a plurality of switching units, a control unit, a charger configured to charge batteries, and a charging control unit. The plurality of switching units is respectively provided for a plurality of batteries connected in series, and are configured to switch between a connected state and a non-connected state. The connected state is a state that a corresponding battery is connected in series with other batteries and the non-connected state is a state that the corresponding battery is disconnected from a series connection with the other batteries. The control unit is configured to determine whether each voltage of the plurality of batteries reaches a charge end voltage during charging, and to control the switching unit corresponding to the battery which is determined to reach the charge end voltage to switch to the non-connected state.

The invention provides an analog double-cell management method and a corresponding management circuit. The management circuit comprises a plurality of power supply modules, an output end, a selective control unit, a plurality of feedback units and an isolation unit, wherein each power supply module comprises an input end, an output end and a control end, and the input end is connected with cells; and the power supply modules, the selective control unit, the plurality of the feedback units and the isolation unit are achieved through analog circuits. The analog double-cell management method and the circuit thereof have the advantages that selection management of power supply of two cells in double-cell power supply equipment is achieved through the analog circuits, compared with the existing double-cell management technology achieved by digital circuits, response time is shorter, the rated current is larger, and the application of double-cell power supply equipment which has high requirement for response time and/or control current becomes possible.

The invention discloses a main power supply storage battery grouping type independent power supply and charging system of an electric ship. Main power supply storage batteries are divided into n groups 1G-nG; the output ends of the storage battery groups are subjected to short circuit protection through fuses and then are connected with respective segmented busbars; the segmented busbars are usedfor mutual backup; each storage battery group is configured with a charger and is provided with n main switches 1Q-nQ; each segmented busbar is connected with the wire inlet end of one main switch; and the wire outlet ends of the main switches 1Q-nQ are connected to a direct-current busbar. According to the system, an existing method for parallel power supply of multiple storage battery groups based on a DC/DC converter is replaced with independent power supply of the grouped main power supply storage batteries of the electric ship, so that the technical problem that the multiple storage battery groups are directly connected in parallel to form a circulating current is solved; and the grouped storage batteries are simultaneously and independently charged, so that the problem that the charging power is excessively high in the prior art is solved, and the technical problem that the charging time is excessively long due to the fact that the multiple storage batteries are charged in sequence is solved.

The invention relates to an alcohol-hydrogen-electricity hybrid power system and an application thereof. The alcohol-hydrogen-electricity hybrid power system is a device for thermally cracking alcohol into hydrogen to propel an engine, wherein the specific structure is that a thermal cracking device is installed in a tail gas tube of the engine, a raw material box is internally filled with the water mixed solution of alcohol, the water mixed solution of alcohol is conveyed into the thermal cracking device through a conveying pump, alcohol is cracked into hydrogen by the thermal cracking device, hydrogen enters the engine via an outlet of the thermal cracking device and is combusted to propel a cylinder to work, an output power drives a power generator to generate power, the electric energy generated by the power generator is stored in a storage battery by a central controller, then the central controller controls to provide the electric energy to the needed motor, and the motor propels a vehicle to run or propels a power machine to work. The system disclosed by the invention is convenient to operate, high in intelligent degree, and capable of improving solar power and ensuring the long-time stable working of the device. The system can be installed on an automobile, and can also be installed on an alcohol-hydrogen power generation station or a hydrogen-rich gas filling station; and the present waste gas pollution of coal and petroleum power generation, and gasoline vehicles is reduced.