A battery management system for dynamically balancing power in a battery module is provided. The battery management system comprises a plurality of modules, and each of the plurality of modules comprises a plurality of bricks. Each of the plurality of bricks comprises a plurality of blocks, electrically connected in one of a series configuration or a parallel configuration and a controller assembly provided in each of the plurality of the modules. The controller assembly comprises a first converter adapted to be connected to the plurality of bricks and a second converter adapted to be connected to an external system. The controller assembly is configured to obtain a plurality of battery pack parameters from the plurality of bricks using the first converter, process the obtained plurality of battery pack parameters and determine a current level to regulate a charging or discharging of the battery pack using the second converter.

The present disclosure discloses a safety control circuit and an automobile emergency starting clamp provided with the same. The safety control circuit is integrated with an EC5 input module, an ignition clip module, a relay module, a timing control module, an input high-voltage protection module, a voltage-stabilizing power supply module, an input low-voltage protection module, a high-temperature protection module, a low-temperature protection module, an error alarm module, a first timing module, a second timing module and a light display module, and has fast response and high safety. The automobile emergency starting clamp provided with the circuit includes an anode cable clamp, a cathode cable clamp and a control box; and the control box includes a control box upper shell, a control box lower shell, an on/off button and the above-mentioned safety control circuit.

A battery charging cable can be connected to a power supplying device and supply electricity to, and thereby charge, the battery of another device when the battery is low in power. The battery charging cable includes a USB Type-C connector at one end and a positive-electrode clamp and a negative-electrode clamp at the other end, wherein the clamps can be respectively clamped to the positive and negative electrodes of the battery of a device to be charged. With the battery charging cable supporting a USB Power Delivery protocol, and the USB Type-C connector configured to provide a relatively high voltage and power, the battery charging cable provides overload protection and has great power transmission performance.

The present disclosure provides a battery detection device. The detection circuit is disposed on the battery and produces an impedance value variation quantity according to a deformation of the battery. The detection circuit includes four connection nodes. The first connection node and the third connection node are connected with the battery. A voltage variation quantity is produced between the second connection node and the fourth connection node according to the impedance value variation quantity. The protection circuit is connected with the second connection node and the fourth connection node. The protection circuit is in an ON state when the voltage variation quantity is greater than or equal to a cut-off voltage. The protection circuit is in an OFF state when the voltage variation quantity is less than the cut-off voltage, so that an operation state of the battery is changed accordingly.

The present disclosure provides a battery protection circuit board and a preparation method thereof. The battery protection circuit board includes a first battery protection board and a second battery protection board, a hardness of the first battery protection board being greater than a hardness of the second battery protection board. The soldering method includes: preparing a first to-be-soldered region of the first battery protection board and preparing a second to-be-soldered region of the second battery protection board; preparing a first copper paste in the first to-be-soldered region of the first battery protection board and preparing a second copper paste in the second to-be-soldered region of the second battery protection board; and bonding the first to-be-soldered region of the first battery protection board and the second to-be-soldered region of the second battery protection board by the first copper paste and the second copper paste.

A power regulation unit is provided for regulating power to or from a power tool battery pack. The power regulation unit includes power regulation circuitry and a controller. The power regulation circuitry is configured to regulate a received power. The controller is connected to the power regulation circuitry. The controller is configured to receive input power from one or more battery cells, regulate the input power by performing at least one of a voltage regulation and a current regulation, and output a regulated output power. For voltage regulation, the regulated output power includes a constant voltage regardless of an operating current of the power tool. For current regulation, the regulated output power includes a constant voltage up to a predetermined current threshold.

A discharge energy recovery and formation capacity grading apparatus for a soft-package power battery comprises a rack, a condition-variable charge and discharge power box arranged on the rack, a battery formation capacity-grading clamping movement mechanism for clamping positive and negative electrode lugs of the soft-package power battery, a battery tray for, a movement mechanism control assembly for controlling the movement of the battery formation and capacity grading clamping movement mechanism, a safety protection sensor assembly, and a battery formation capacity-grading control mechanism. The charge and discharge power box, the battery formation capacity-grading clamping movement mechanism, the battery tray, the movement mechanism control assembly, and the safety protection sensor assembly are all in signal connection with the battery formation capacity-grading control mechanism. The power transmission end of the charge and discharge power box is electrically connected with the power transmission end of the battery formation capacity-grading clamping movement mechanism.

Provided is a power supply and distribution system, the power supply and distribution system includes at least one non-isolated AC/DC converter unit, an MV DC bus and multiple isolated DC/DC converter units, and the at least one non-isolated AC/DC converter unit is connected between an MV AC grid and the MV DC bus, and is configured to convert an input MV AC voltage to an output MV DC voltage, where the output MV DC voltage is fed into the MV DC bus, the multiple isolated DC/DC converter units are connected to the MV DC bus in parallel via MV class cables, and are configured to convert a voltage level from the MV DC bus to a charging voltage level. The power supply and distribution system can be used for charging the EVs.

An aerosol-generating device is disclosed. The aerosol-generating device includes a first container accommodating an aerosol-generating substance, a heater heating the aerosol-generating substance, a second container configured to be rotatable and including chambers, a rotation detection sensor sensing rotation of the second container, and a controller. The controller determines any one of the chambers to be an application chamber through which an aerosol passes based on a signal received from the rotation detection sensor, and determines usage of a chamber determined to be the application chamber. The heater is heated to a first temperature or higher when the usage is equal to or greater than a first reference and less than a second reference, and is heated to a second temperature or higher when the usage is equal to or greater than the second reference and less than a third reference. The second temperature is higher than the first temperature.

The electrical system (100) includes: —a capacitor (C); —an electrical power supply device (102); —an electrical power receiving device (104); —a current-consuming electrical circuit (108) designed to consume a current (i) entering via a first interface terminal (B.sub.A) and exiting via a second interface terminal (B.sub.B). The electrical system (100) being designed such that the current-consuming electrical circuit (108) consumes the discharge current (i) when the electrical power supply device (102) is connected to the terminals of the capacitor (C). The current-consuming electrical circuit (108) includes a transistor (Q1) arranged such that the consumed current (i) enters via a current input terminal (C1) of the transistor (Q1) and exits via a current output terminal (E1) of the transistor (Q1), and in that the current output terminal (E1) is connected to a control terminal (B1) of the transistor (Q1) in order to stabilize the transistor (Q1).