Abstract: A silicon-based composite anode material for a battery includes a silicon-based material core and a coating layer coated on a surface of the silicon-based material core. The coating layer includes a first coating layer disposed on the surface of the silicon-based material core and a second coating layer disposed on a surface of the first coating layer. The first coating layer includes a two-dimensional quinone-aldehyde covalent organic framework material, and the second coating layer includes a material with high ionic conductivity. The second coating layer is relatively rigid, and can maintain structural stability of the entire material during silicon expansion and contraction, and effectively alleviates volume expansion.

Abstract: A lithium-ion battery conductive bonding agent, including graphene and a first bonding agent grafted on a surface of the graphene, a production method for the conductive bonding agent, and an electrode plate and a lithium-ion battery that contain the conductive bonding agent, where the first bonding agent includes at least one of polyvinyl alcohol, sodium carboxymethyl cellulose, polyethylene glycol, polylactic acid, polymethyl methacrylate, polystyrene, polyvinylidene fluoride, a hexafluoropropylene polymer, styrene-butadiene rubber, sodium alginate, starch, cyclodextrin, or polysaccharide. The lithium-ion battery conductive bonding agent has good conductive performance and bonding performance and specific strength, improving mechanical strength of a whole electrode plate. The conductive bonding agent integrates a bonding agent and a conductive agent. This can improve content of active substance in the electrode plate, and further increase an energy density of an electrochemical cell.

Abstract: A method for intelligently controlling a wireless charging receiving device, where the method includes obtaining at least one of a first environment parameter, a first status parameter, or a first historical record of a wireless charging receiving device, setting a wireless charging requirement according to at least one of the first environment parameter, the first status parameter, or the first historical record, transmitting the wireless charging requirement to a wireless charging transmission device, receiving an energy signal, generating a wireless charging stop instruction according to the wireless charging requirement or a user instruction, and sending the wireless charging stop instruction to the wireless charging transmission device. Therefore, intelligent control over a wireless charging process is implemented, a personalized requirement of a user is satisfied, and user experience is improved.

Abstract: A wireless charging apparatus includes a receive end coil, a switch selection circuit, a plurality of charging circuits, and a receive end controller. An input end of the switch selection circuit is connected to an output end of the receive end coil, and an output end of the switch selection circuit is connected to an input end of each of the charging circuits.

Abstract: A composite material and a preparation method thereof are provided to solve the prior-art problem that a silicon anode material used in a battery is prone to cracking and pulverization. The composite material includes a layered silicon core and a plurality of carbon nanotubes. The layered silicon core includes a plurality of silicon-based material layers, and there is an interlayer spacing between two adjacent silicon-based material layers. Each silicon-based material layer has at least one through hole, and the silicon-based material layer includes silicon or silicon oxide. Each of the plurality of carbon nanotubes passes through the through holes on the plurality of silicon-based material layers.

Abstract: A locomotive-mounted power battery pack fire safety control system includes a power battery pack, a power battery management system main controller, a rolling stock microcomputer system and a rolling stock display screen. The power battery pack is an enclosed installation isolated from external air. An inert gas injection pipe, a smoke detector and a temperature detector are arranged at the top end inside the power battery pack. An inert gas storage device is arranged outside the power battery pack. The inert gas storage device is connected with the inert gas injection pipe. A pressure detector and an inert gas injection control switch are arranged in turn on a pipeline through which the inert gas storage device discharges an inert gas to the power battery pack. The pressure detector and the inert gas injection control switch are connected with the rolling stock microcomputer system.

Abstract: Example batteries, terminals, and charging systems are described. One example battery includes a battery charging port, a battery discharging port, a battery negative port, an overcurrent protection element, a protection integrated circuit, a control switch, and an electrochemical cell. The battery charging port is connected to a positive electrode of the electrochemical cell. The control switch is connected in series between a negative electrode of the electrochemical cell and the battery negative port. The protection integrated circuit is connected in parallel to two ends of the electrochemical cell. The protection integrated circuit is further connected to the control switch so as to send a control signal to the control switch. In addition, the overcurrent protection element is connected in series between the battery discharging port and the positive electrode of the electrochemical cell. The battery provided in the present application has both a charging path and a discharging path.

Abstract: A fast charging method for a parallel battery pack is provided, including: obtaining a maximum charging current allowed by a charging trunk and a charging current required for charging a parallel battery pack; comparing the charging current required for charging the parallel battery pack with the maximum charging current allowed by the charging trunk; if the charging current required for charging the parallel battery pack is less than or equal to the maximum charging current allowed by the charging trunk, performing parallel charging on battery units; or if the charging current required for charging the parallel battery pack is greater than the maximum charging current allowed by the charging trunk, changing some or all of battery units in the parallel battery pack to a series connection, and performing series charging on the battery units. The fast charging method for a parallel battery pack can effectively shorten a charging time.

Abstract: A terminal and a fast charging method includes sending, by the terminal, instruction information to a charger connected to the terminal in order to instruct the charger to adjust an output voltage and an output current, converting, by the terminal, the output voltage of the charger into 1/K times the output voltage, and converting the output current of the charger into K times the output current such that a charging circuit between two sides of a battery charges the battery with the 1/K times the output voltage and the K times the output current, where K is a conversion coefficient of a conversion circuit with a fixed conversion ratio in the terminal and is a constant value, and K is any real number greater than one.

Abstract: A charging circuit in a terminal, or a charging system, is respectively coupled to a charger, a terminal load, and a battery. The charging circuit includes a first adjustment circuit, a current detection circuit, a voltage detection circuit, and a control circuit. A first end of the first adjustment circuit is coupled to the charger, a second end of the first adjustment circuit is further coupled to the terminal load, a third end of the first adjustment circuit is coupled to the control circuit, and a second end of the current detection circuit is coupled to a positive electrode of the battery.

Abstract: A fast charging method, a fast charging system, and a fast charging apparatus for a series battery pack, where the fast charging method including obtaining charge parameters of battery units in a series battery pack, determining, based on the charge parameters, whether there is a differentiated battery unit in the series battery pack, where the differentiated battery unit is a battery unit whose charge parameter is different from a charge parameter of the rest battery units in the series battery pack, and changing the battery units in the series battery pack to a parallel connection when there is a differentiated battery unit in the series battery pack, and performing parallel charging on the battery units. Hence, the fast charging method for a series battery pack can effectively shorten a charging time.

Abstract: An example battery, a terminal, or a charging system can include a battery charging port, a battery discharging port, a battery negative port, an overcurrent protection element, a protection integrated circuit, a control switch, and an electrochemical cell. The battery charging port is connected to a positive electrode of the electrochemical cell, the control switch is connected in series between a negative electrode of the electrochemical cell and the battery negative port, the protection integrated circuit is connected in parallel to two ends of the electrochemical cell, and the protection integrated circuit is further connected to the control switch, so as to send a control signal to the control switch. In addition, the overcurrent protection element is connected in series between the battery discharging port and the positive electrode of the electrochemical cell.

Abstract: An example battery, a terminal, or a charging system can include a battery charging port, a battery discharging port, a battery negative port, an overcurrent protection element, a protection integrated circuit, a control switch, and an electrochemical cell. The battery charging port is connected to a positive electrode of the electrochemical cell, the control switch is connected in series between a negative electrode of the electrochemical cell and the battery negative port, the protection integrated circuit is connected in parallel to two ends of the electrochemical cell, and the protection integrated circuit is further connected to the control switch, so as to send a control signal to the control switch. In addition, the overcurrent protection element is connected in series between the battery discharging port and the positive electrode of the electrochemical cell.

Abstract: A terminal and a fast charging method to fast charge the terminal, where the method includes sending, by the terminal, instruction information to a charger connected to the terminal in order to instruct the charger to adjust an output voltage and an output current, converting, by the terminal, the output voltage of the charger into 1/K times the output voltage, and converting the output current of the charger into K times the output current such that a charging circuit between two sides of a battery charges the battery with the 1/K times the output voltage and the K times the output current, where K is a conversion coefficient of a conversion circuit with a fixed conversion ratio in the terminal and is a constant value, and K is any real number greater than one.

Abstract: A power protection apparatus includes a protection integrated circuit (IC), a switch transistor group, and a sampling resistor. The protection IC is respectively connected to a positive electrode and a negative electrode of the cell and includes a mirror current input port, a mirror current output port, an operational amplifier, a voltage regulation switch transistor, and a charge-discharge protection circuit. The operational amplifier includes a positive input pin, a negative input pin, and an output pin. The switch transistor group is connected between the positive electrode of the cell and the load and is configured to turn on or turn off a charge-discharge loop of the cell, and the at least one control circuit is connected to the at least one charge-discharge protection circuit of the protection IC and is configured to receive a control signal of the protection IC to control the switch transistor group to be turned off to implement abnormity protection of the cell.

Abstract: A battery protection apparatus power protection apparatus is configured to protect an electrochemical cell connected to a load, and includes a protection IC, a switching transistor group, and a sampling resistor. The protection IC includes two power input terminals respectively connected to positive and negative electrodes of the electrochemical cell, and an operational amplifier, where the operational amplifier includes a positive input pin, a negative input pin, and an output pin. The switching transistor group is connected between the negative electrode of the electrochemical cell and the load, and is configured to control turn-on and turn-off of a charge and discharge circuit of the electrochemical cell. The sampling detection resistor Rs is serially connected between the sampling circuit detection terminal and the output pin, where the main circuit detection terminal is connected to the positive input pin, and the sampling circuit detection terminal is connected to the negative input pin.

Abstract: The present invention provides a flexible battery, including an electrochemical cell layer and a wrapping layer that wraps the electrochemical cell layer. The flexible battery further includes an energy absorbing layer. The energy absorbing layer is located between the wrapping layer and upper and lower surfaces, which are opposite to each other, of the electrochemical cell layer. The energy absorbing layer includes a plurality of supporting parts that protrude outward from the upper or lower surface of the electrochemical cell layer. The plurality of supporting parts are mainly made of a foam material or rubber. For the energy absorbing layer, a lower-modulus buffering layer or an empty part may be further disposed between the electrochemical cell layer and the wrapping layer, to complement a wavy surface of the supporting part to form a flat surface, so as to meet diversified requirements of a wearable device.

Abstract: A method for intelligently controlling a wireless charging receiving device, where the method includes obtaining at least one of a first environment parameter, a first status parameter, or a first historical record of a wireless charging receiving device, setting a wireless charging requirement according to at least one of the first environment parameter, the first status parameter, or the first historical record, transmitting the wireless charging requirement to a wireless charging transmission device, receiving an energy signal, generating a wireless charging stop instruction according to the wireless charging requirement or a user instruction, and sending the wireless charging stop instruction to the wireless charging transmission device. Therefore, intelligent control over a wireless charging process is implemented, a personalized requirement of a user is satisfied, and user experience is improved.

Abstract: The present invention discloses an energy management method for a device including a rechargeable-battery. The energy management method includes: obtaining, by the device including a rechargeable-battery, information that is related to energy availability; analyzing, by the device including a rechargeable-battery according to the information that is related to energy availability, the energy availability of the device including a rechargeable-battery, and determining, according to an analysis result, an energy availability level of the device including a rechargeable-battery; generating, by the device including a rechargeable-battery, an energy management policy according to the energy availability level; and executing, by the device including a rechargeable-battery, the energy management policy. The present invention further discloses a device including a rechargeable-battery. In the foregoing manners, the present invention can effectively improve a battery endurance capability and improve user experience.

Abstract: Embodiments of the present disclosure provide a cathode active material for a lithium-ion secondary battery, where the cathode active material for a lithium-ion secondary battery includes a silicon-based active substance and a nitrogen-doped carbon material. The silicon-based active substance is encased in the interior of the nitrogen-doped carbon material, and the silicon-based active substance is one or more of a nanoparticle and a nanowire; a micropore is arranged on at least one of the exterior and the interior of the nitrogen-doped carbon material; and a material of the nitrogen-doped carbon material is a nitrogen-doped carbon network. The cathode active material for a lithium-ion secondary battery solves a problem in the prior art that a silicon material, when used as a cathode active material, easily falls from a current collector due to a great volume change and has a low conductivity.