41results about How to "Normal charge and discharge" patented technology

The invention discloses an unmanned aerial vehicle, a battery module and a charge-discharge control method. The battery module comprises a battery body, an outer case, a heat conducting assembly, a first heating piece, a second heating piece, a temperature sensor and a control assembly, wherein the battery body is arranged in the outer case; the heat conducting assembly is connected between the outer case and the battery body in a heat conducting manner; the first heating piece is used for heating the battery body; the second heating piece is used for heating the heat conducting assembly; the temperature sensor is used for detecting temperature of the battery body and producing a temperature signal according to the detected temperature of the battery body; the control assembly is electrically connected with the first heating piece, the second heating piece and the temperature sensor and used for receiving the temperature signal and controlling the first heating piece and the second heating piece according to the temperature signal. According to the battery module, normal charge and discharge of the battery module can be guaranteed, charge-discharge performance of the battery module can be improved, and heat produced by the battery body can be dissipated effectively and rapidly in time.

The invention belongs to the technical field of batteries and particularly relates to a battery pole piece structure. The battery pole piece structure comprises pole pieces, wherein the pole pieces comprise a positive pole piece and a negative pole piece; electrode leads and electric heating leads are arranged on the pole pieces. Before a battery comprising the battery pole pieces is charged in a low-temperature environment, the electrode leads and the electric heating leads can be communicated with an external power supply respectively, so that the pole pieces form a power-on circuit, the external power supply introduces high pulse current into the pole pieces, the pole pieces are preheated rapidly, the battery can be charged normally when the pole pieces are preheated to 15-35 DEG C, and accordingly, a rapid charging temperature environment is provided for the battery. Besides, the preheating mode can be also used in a battery discharging condition, the external power supply introduces high pulse current into the pole pieces, so that the battery is preheated to be higher than subzero 10 DEG C, and accordingly, the battery can be discharged in a normal temperature environment. The invention further relates to a lithium ion battery.

The invention belongs to the technical field of solar thermal power generation, provides an independent cyclic heat storage and electric power storage and cascaded heat exchange and evaporation technology and relates to a large-scale solar thermal power station formed by being combined with trough type solar concentrators, tower type solar concentrators and the like with molten salt or sulfur and quick sand as heat storage and heat transfer fluid. According to the solar thermal power station, the brand new cascaded evaporation technology is adopted while the integrated design of heat storage and electric power storage is considered, standardization and mass production of manufacturing of solar power generation equipment are promoted, and the investment cost of the power station can be lowered; the power supply capacity of the solar thermal power station is improved, the operating cost of the solar thermal power station is lowered, the power generation hours are increased substantially, and the capability of the solar thermal power station competing with fossil energy power generation is improved.

The invention discloses heat-insulating anti-freezing electric vehicle battery shell material and relates to the technical field of manufacture of electric vehicles; the heat-insulating anti-freezing electric vehicle battery shell material is prepared from, by weight, 10-15 parts of bismaleimide resin, 10-15 parts of polyvinyl chloride paste resin, 10-15 parts of polyethylene glycol terephthalate, 5-10 parts of plastic drink bottle cap reclaimed particles, 5-10 parts of powdery nitrile rubber, 3-6 parts of terpene resin, 3-6 parts of polyoxyethylene, 2-4 parts of modified asbestos wool, 2-4 parts of sepiolite fiber, 1-2 parts of a weatherable aid, 1-2 parts of ethoxylated trimethylolpropane triacrylate, 0.5-1 part of N,N'-4,4'-diphenylmethane-bismaleimide, and 0.5-1 part of barium metaborate. The heat-insulating anti-freezing electric vehicle battery shell material has excellent heat-insulating and anti-freezing effects, can prevent a battery from being damaged by high temperature or low temperature, and enables a battery to charge and discharge normally even at high and low temperatures so that the service life of the battery is prolonged.

The invention discloses a top cap for a lithium ion battery. The top cap comprises a top cap cover plate, an electrolyte injecting hole, an explosion-proof hole, a first electrode pole and a second electrode pole, wherein the electrolyte injecting hole and the explosion-proof hole are formed in the top cap cover plate; the first electrode pole and the second electrode pole respectively penetrate through the top cap cover plate and are fixed on the top cap cover plate; the first electrode pole is conductively connected with the top cap cover plate; the second electrode pole is in insulated connection with the top cap cover plate; in addition, an electric connecting sheet which is conductively connected with the second electrode pole is arranged on the second electrode pole; a voltage measuring hole is also formed in the top cap cover plate; an overcharge preventing device is arranged above the voltage measuring hole, is electrically connected with the top cap cover plate and is locatedbelow the electric connecting sheet; when the internal air pressure inside the battery is greater than or equal to a preset value, the overcharge preventing device is electrically connected with the electrical connecting sheet; when the air pressure inside the battery is smaller than the preset value, the overcharge preventing device is in insulated assembly with the electrical connecting sheet.

The invention relates to a battery temperature control method and a battery temperature control circuit. The battery temperature control method comprises the steps of obtaining a first detection signal corresponding to an environment temperature; detecting whether the first detection signal is matched with a first preset signal or not; when the first detection signal is matched with a first presetsignal, obtaining a second detection signal corresponding to the battery temperature; detecting whether the second detection signal is matched with a second preset signal or not; and when the seconddetection signal is matched with the second preset signal, starting a heating circuit. According to the method, the matching condition of the first detection signal and the first preset signal is detected. When the first detection signal is matched with the first preset signal, it is indicated that the environmental temperature is low. At this moment, the matching condition of the second detectionsignal and the second preset signal is further detected. When the second detection signal is matched with the second preset signal, it is indicated that the temperature of the battery is low. After that, the heating circuit is started to heat the battery, so that the temperature of the battery rises. The normal charging and discharging of the battery in the low-temperature environment can be ensured.

The invention relates to a gel electrolyte suitable for a -20 DEG C zinc-based battery as well as preparation and application of the gel electrolyte. The invention discloses a preparation method of an anti-freezing gel electrolyte for a zinc-based battery, which aims to reduce the freezing temperature of the gel electrolyte taking sodium alginate-polyacrylamide as a matrix through the synergistic hydration effect of zinc salt and lithium salt. The anti-freezing hydrogel immersed in zinc salt and lithium salt is used as an electrolyte, shows good freezing resistance and mechanical properties, and has excellent low-temperature tolerance and cycle stability. The problems that the conventional electrolyte cannot work normally due to limited use below zero DEG C, the preparation process is tedious and the ionic conductivity is low are overcome.

The invention relates to a battery current detection circuit for communication. The battery current detection circuit comprises a current sampling circuit, a differential amplification circuit, a compatible conversion circuit, an output shaping circuit and a central processing unit. An output end of the current sampling circuit is electrically connected with an input end of the compatible conversion circuit and an input end of the compatible conversion circuit; the output end of the differential amplification circuit is electrically connected with the other input end of the compatible conversion circuit; the output end of the compatible conversion circuit is electrically connected with the input end of the output shaping circuit; and the output end of the output shaping circuit is electrically connected with the input end of the central processing unit. According to the battery current detection circuit for the communication provided by the invention, different sampling devices are compatible, the output shaping circuit can detect charge and discharge states of a battery in real time, a circuit structure is simple, and detection precision is relatively high.

The invention provides an anti-reverse-connection protection circuit. The anti-reverse-connection protection circuit comprises a first detection unit, a second detection unit and a battery managementsystem. The first detection unit and the second detection unit are electrically connected with an external port of the electrochemical device, and the first detection unit and the second detection unit are used for detecting parameters of the external port; when the external port is electrically connected with external equipment, the first detection unit and the second detection unit respectivelyoutput a first detection signal and a second detection signal to the battery management system according to parameters of the external port. The invention further provides an anti-reverse-connection protection method and an electrochemical device. By detecting the parameters of the external port and respectively outputting the first detection signal and the second detection signal to the battery management system according to the parameters, whether the external port is reversely connected with the external equipment or not is determined; the method has the advantages of being low in cost, high in detection precision, wide in detection range and the like; the safety and stability of the battery can be improved.

The invention discloses an energy storage management system based on ubiquitous power Internet of Things. The system comprises a new energy power generation side used for generating power by using new energy; a battery management system used for storing electric energy of a new energy power generation side, measuring data information in real time and sending the data information to the cloud storage and data analysis server; a data collection unit used for collecting electric power data and uploading the electric power data to the cloud storage and data analysis server after primary processing; a cloud storage and data analysis server is used for receiving and analyzing the power data in real time and generating a control scheduling strategy; a monitoring center used for receiving the power data and the control scheduling strategy and synchronizing them in real time; and an intelligent power distribution cabinet used for receiving the control scheduling strategy or a power scheduling instruction, deploying electric energy and adjusting a power distribution state of a user side. The collected electric power data are stored and analyzed through the cloud storage and data analysis server of the cloud end, data generated in the battery management system are analyzed in real time, and normal charging and discharging in the energy storage management system are guaranteed to the maximum extent.

The present invention provides a single secondary battery formation method. According to the single secondary battery formation method, a plurality of single secondary batteries requiring formation are connected in parallel to form a discharged battery module, a plurality of single secondary batteries requiring formation are connected in parallel to form a rechargeable battery module, the voltage difference exists between the discharged battery module and the rechargeable battery module, the discharged battery module and the rechargeable battery module are connected in parallel to form a charging-discharging loop after the discharged battery module and a voltage increasing energy storage batter module are connected in series, the voltage increasing energy storage batter module is connected with a charging circuit capable of maintaining the stable voltage of the voltage increasing energy storage batter module, and when the single secondary batteries in the discharged battery module perform formation discharging, the single secondary batteries in the discharged battery module and the voltage increasing energy storage batter module always being at the voltage-stabilizing state co-perform the charging on the single secondary batteries in the rechargeable battery module so as to complete the charging formation of the single secondary batteries in the rechargeable battery module. The single secondary battery formation method has characteristics of effective energy source utilization, single battery batch formation achieving, and formation efficiency increasing.

The invention discloses low-temperature compensation method and device based on a battery. The method includes the steps that the surface temperature value of the battery is acquired; whether the surface temperature value of the battery is lower than a first temperature threshold value or not is judged; if the surface temperature value of the battery is lower than the first temperature threshold value, a switching circuit controls a valve arranged on a spontaneous heating module to be switched on, air enters the spontaneous heating module, makes contact with a spontaneous heating material in the spontaneous heating module, and then release heat to heat the battery. In this way, the battery can be heated in the extreme low-temperature environment, and therefore the battery can be normally charged and discharged in the extreme low-temperature environment.

The invention relates to the field of a secondary battery and particularly provides electrolyte, a preparation method of the electrolyte, a lithium ion battery, a preparation method of the lithium ionbattery and electric equipment. The electrolyte comprises lithium salt and solvent, wherein the lithium salt comprises mixture of LiBF4 and LiFSI, and the solvent comprises mixture of sulfolane, gamma-butyrolactone, ethyl acetate and dimethyl carbonate. The electrolyte is advantaged in that the charging capacity of the lithium ion battery at -40 DEG C can reach 65% or above of the nominal capacity, the lithium ion battery can still continuously discharge at the rate of 1C at the ultralow temperature of-65 DEG C, the discharge capacity is 60% or above of the normal temperature capacity, and continuous high-rate pulse discharge can be carried out at -43 DEG C.

The invention relates to the technical field of communication base stations, and discloses a standby storage battery anti-theft protection device for a 5G communication base station. The device comprises a storage battery cabin, the interior of the storage battery cabin is movably connected with a storage battery shell, the front and back surfaces of the top end of the storage battery shell are respectively fixedly connected with a lead column, the outer side of each lead column is movably connected with a connector, an electrode is movably connected into the storage battery shell, electrolyteis contained in the storage battery shell, a fixed magnetic block is fixedly connected to the bottom end of the connector, and an inner shell is fixedly connected to the top end of the interior of the storage battery shell. A power spring pulls a piston to move towards one side of the inner shell, so that negative pressure is formed on the other side of the inner shell, and a liquid suction pipeconnected with a hole formed in the bottom end of the inner shell sucks electrolyte upwards at the bottom end of the storage battery shell into one side of the interior of the inner shell, so that theelectrolyte at the bottom end of the storage battery shell is far away from the electrode, electrode vulcanization is avoided, the service life of the battery is prolonged, the construction cost forconstructing a communication base station is reduced, and the battery is prevented from being scrapped due to vulcanization.