14results about How to "Reduce charging voltage" patented technology

The invention discloses a control system for lithium battery power management, and relates to the field of lithium battery control, and the system comprises a voltage input module which is used for externally connecting voltage and supplying power to a battery power supply module and a time delay module; the battery power supply module is used for charging the battery; receiving the battery voltage information, and adjusting the voltage output to the battery according to the battery voltage; the battery module is used for a battery to store electric energy; compared with the prior art, the system has the beneficial effects that the output voltage of the battery power supply module is adjusted through the feedback module, the output voltage of the battery power supply module is relatively large at the beginning, and the charging voltage is reduced along with the increase of the battery voltage, so that a quick charging effect is constructed; whether battery charging is abnormal or not is detected through the time delay module and the charging fault detection module, the battery power supply module is adjusted to perform constant-voltage charging when charging is abnormal, and the battery charging effect is guaranteed.

The invention discloses a two-wheeled vehicle charging method and device, by adopting a low-voltage large-current charging mode, the charging voltage can be effectively reduced, the safety in the using process is further improved, and compared with high voltage, the protection requirement for a charging gun connecting cable can be reduced. Meanwhile, the charging current is controlled by comprehensively considering data such as the battery cell temperature, the power assembly temperature, the initial current, the environment temperature and the battery internal resistance, so that the problem of excessive temperature rise caused by large-current charging can be reduced while large-power charging is provided, and a basis is provided for safe charging.

The invention provides a defect-rich FeNC catalyst, a preparation method thereof and application of the defect-rich FeNC catalyst in an acid-base mixed zinc air battery, the preparation method comprises the following steps: (1) reacting a reaction solution containing Zn < 2 + >, Fe < 3 + >, a ligand, an etching agent containing a nitrogen element and a solvent to obtain a precipitate which is a metal organic framework precursor; and (2) calcining the metal organic framework precursor in a protective atmosphere to obtain the FeNC catalyst rich in defects. A metal organic framework precursor is synthesized through a simple coprecipitation method, then the structure of the metal organic framework precursor is etched through the etching agent containing the nitrogen element through high-temperature pyrolysis to achieve defect construction, the FeNC catalyst rich in defects is formed, and the FeNC catalyst rich in defects has a porous structure, is high in specific surface area and can be used as a catalyst for preparing the FeNC catalyst rich in defects. More active sites can be easily exposed, and excellent acidic ORR performance and alkaline UOR performance are shown.

The present disclosure relates to a grid-connected starting method of an AC-DC conversion system, and the grid-connected starting method comprises: obtaining energy storage voltages of a plurality of energy storage circuits when the AC power grid charges the plurality of energy storage circuits; in the case that the voltage difference between any two energy storage voltages is greater than a difference threshold, short-circuiting at least part of the energy storage sub-modules to reduce the charging voltage of a target energy storage circuit until the voltage difference between any two energy storage voltages is less than the difference threshold; wherein the target energy storage circuit is at least one energy storage circuit with the largest energy storage voltage; the at least part of the energy storage sub-modules come from the target energy storage circuit; in the case that the plurality of energy storage voltages all meet the charging completion condition, controlling at least two AC-DC conversion circuits to be grid-connected. The present disclosure realizes dynamic voltage equalization of the plurality of energy storage circuits in the AC-DC conversion circuit during the charging process before the plurality of AC-DC conversion circuits are grid-connected.

The application discloses a kind of vehicle-mounted unmanned aerial vehicle charge-discharge management system and method, including the full-amount state parameter of acquisition unmanned aerial vehicle, hangar, power supply and environment, constructs system state vector, dynamically calculates charging trigger threshold and judges charging trigger condition, exports charging trigger signal or standby instruction or low-power value guard instruction;Construct reinforcement learning scheduling system and complete charging channel, power level, power supply type Dynamic decision, output optimal charging scheduling instruction;Precise regulation and control to charging voltage, charging current is realized through double closed loop artificial neural network, compensates wireless charging coupling coil offset, exports battery real-time operation data in charging process;Battery health status is analyzed, battery remaining useful life is predicted in combination with battery state parameter collected in whole process, dynamically adjusts charging trigger threshold and optimal charging scheduling instruction.

The invention belongs to the technical field of energy conversion and storage devices, and particularly discloses an all-solid-state optical energy storage integrated device and a preparation method and application thereof. The all-solid-state optical energy storage integrated device sequentially comprises an energy storage electrode, an energy storage all-solid-state electrolyte, a compatible electrode, a photoelectric conversion all-solid-state electrolyte and a dye-sensitized photoanode from bottom to top, wherein the compatible electrode comprises foamed nickel and a carbon-sulfur composite material coated on the foamed nickel, the preparation raw materials of the energy storage all-solid-state electrolyte comprise polyoxyethylene, lithium bis (trifluoromethanesulfonimide) and beta-cyclodextrin, and the preparation raw materials of the photoelectric conversion all-solid-state electrolyte comprise polyoxyethylene, elemental iodine, lithium iodide and beta-cyclodextrin. And the energy storage electrode is a lithium metal anode. The photoelectric conversion unit and the energy storage unit are integrated in one device, efficient light energy conversion and electric energy storage are achieved, and good energy conversion efficiency and cycling stability are achieved.

The invention relates to the technical field of battery overcharge prevention, and discloses an energy storage anti-overcapacity protection system which comprises an energy storage battery pack composed of a plurality of lithium battery monomers, and the lithium battery monomers are connected in parallel through a high-voltage mainboard and are subjected to charge and discharge control and battery management through a battery management system. The heat exchange unit is used for absorbing heat energy on the lithium battery monomers in a heat transfer manner, and the heat energy enables the matched thermal expansion unit to act so as to change the lithium battery monomers or change the positions of the contacts conducting with the lithium battery monomers, so that the on-off control of the single lithium battery monomers is realized; therefore, a single battery can be controlled in an integrated battery module. Compared with the traditional working principle of intervention after thermal expansion of the batteries, the online state of each single battery in the battery pack can be independently adjusted by utilizing heat energy.

The invention discloses a low-voltage large-current fast charging method and device, and the method and device can effectively reduce the charging voltage through employing a low-voltage large-current charging mode, thereby improving the safety in a use process, and can reduce the protection requirement for a charging gun connection cable compared with a high voltage. Meanwhile, the charging current is controlled by comprehensively considering data such as the initial current, the environment temperature and the internal resistance of the battery, so that the problem of excessive temperature rise caused by high-current charging can be reduced while high-power charging is provided, and a basis is provided for safe charging.

The utility model discloses a charging circuit of a battery, and relates to the technical field of charging equipment, the charging circuit comprises a power supply circuit, the input end of the power supply circuit receives a power supply, and the output end of the power supply circuit is used for charging the battery; the control circuit is respectively connected with the power supply circuit and the detection feedback circuit, the detection feedback circuit is connected with and detects the charging voltage of the power supply circuit, and the control circuit detects the charging voltage of the power supply circuit through the detection feedback circuit; when the charging voltage exceeds a first preset threshold value, the control circuit controls the power supply circuit to reduce the output, and when the charging voltage is lower than the first preset threshold value, the control circuit controls the power supply circuit to increase the output; when the environment temperature rises, the control circuit controls the power circuit to reduce the output, and when the environment temperature drops, the control circuit controls the power circuit to increase the output. According to the invention, the charging electric quantity of the lead-acid battery in a low-temperature environment is more sufficient, and the lead-acid battery is prevented from being overcharged in a high-temperature environment.

The invention discloses an electrolyte of a neutral aqueous zinc air / iodine hybrid battery, which is a neutral electrolyte and comprises a zinc source, an iodine source and a conductive additive. The invention also discloses a positive electrode of the neutral aqueous zinc air / iodine hybrid battery, and the positive electrode is a FeN particle-loaded porous carbon positive electrode material obtained by calcining a metal organic framework formed by bimetallic (Fe, Zn) and aminoantipyrine at a high temperature. The invention also discloses a neutral aqueous zinc air / iodine hybrid battery comprising the neutral electrolyte and a porous carbon positive electrode material loaded with FeN particles. The neutral aqueous zinc air / iodine hybrid battery constructed by the electrolyte and the positive electrode provided by the invention realizes reversible and stable conversion of oxygen species and iodine species under a neutral condition, and has excellent specific capacity and cycling stability.

The invention belongs to the technical field of high polymer materials, and discloses an application of a conjugated microporous polymer material in preparation of a photoresponse zinc ion battery. The conjugated microporous polymer material has a narrow forbidden band, high carrier mobility and a small electron transfer barrier, is beneficial to improving the light capture capability, accelerating charge separation and transportation and effectively improving the photocatalytic activity, can also be directly used as a photo-anode in a photo-assisted rechargeable zinc ion battery, and can be applied to the field of photo-assisted rechargeable zinc ion batteries. According to the present invention, the zinc ion battery prepared by the method can absorb photons, produce photo-induced electrons and holes, promote the charge-discharge reaction of the battery, has the energy saving effect when applied to construction of the zinc ion battery, and can achieve the efficient synergistic conversion of solar energy and electric energy, and the photo-assisted rechargeable zinc ion battery prepared by using the zinc ion battery has significant photo-response voltage under illumination, the method has a wide application scene in the field of photoresponse cells.

The application discloses a memory operation system compliant with DDR memory access timing, and belongs to the field of memory and scientific calculation, comprising: a row-level parallelism driven timing termination mechanism, which utilizes row nonlinear charging characteristics to reduce tail delay of tRCD and tRP; and a row block interleaving, row-column collaborative vector-matrix multiplication (VMM) access mechanism, which reduces tRAS and overlaps CL timing parameters without increasing peripheral column ADC precision overhead, and reduces cross-point RAM internal core delay; the proposed row access and column access collaborative optimization memory hardware design can enable VMM operation compliant with DDR memory access timing in a memory-centric manner, so as to realize efficient hardware execution of low-delay, high-bit-width data-intensive scientific calculation (computational physics) loads.

The invention discloses a battery fault management system, which is characterized in that each battery cell is provided with an electronic switch, the electronic switch of any battery cell is used for controlling the any battery cell to be connected to or separated from a battery cell series circuit of a battery pack, and when the electronic switch is separated from the battery cell series circuit, the access of the battery cell series circuit can be ensured; therefore, the fault removal of the single battery cell can be realized based on the electronic switch, namely, the pressure data of the battery pack and the voltage, current and temperature data of each battery cell are firstly acquired; then, judging whether each battery cell has a fault or not according to the data, and when the fault is judged, controlling the electronic switch of the battery cell with the fault to disconnect the connection between the battery cell and the battery cell series circuit; on the basis, the faulted battery cell can be separated from the circuit, so that the normal power supply of the normal battery cell to the equipment is ensured; therefore, the battery pack can continuously and normally work; therefore, the maintenance cost is reduced while the working stability and sustainability are improved.

The invention provides a switching power supply circuit and a charger. The switching power supply circuit comprises a voltage conversion circuit, a temperature acquisition circuit, a first comparison circuit and a first control circuit, the output end of the voltage conversion circuit is connected with a charging interface of a charging load; the output end of the temperature acquisition circuit is connected with the input end of the first comparison circuit, and the output end of the first comparison circuit is connected with the first control circuit; the first control circuit is connected with the output end of the voltage conversion circuit; the voltage conversion circuit is used for providing required charging voltage and charging current for a charging interface of a charging load according to external power supply voltage output by an external power supply; the temperature acquisition circuit is used for acquiring the temperature of a preset detection point of the switching power supply circuit and generating a corresponding analog voltage based on the acquired temperature; the first comparison circuit is used for comparing the analog voltage with a pre-configured first reference voltage; the first control circuit is used for adjusting the charging voltage and / or the charging current output by the voltage conversion circuit according to the first comparison result.