The present application discloses a method, apparatus, device, and system for monitoring battery pack safety. The method includes: obtaining, based on obtained stress data of a battery pack in an electric vehicle, stress energy information of the battery pack; determining a target-level alarm condition based on the stress energy information and sending corresponding alarm information, where the target-level alarm condition is a level of alarm condition in preset N levels of alarm conditions that the stress energy information satisfies, an i.sup.th level of alarm condition indicates that there are m.sub.i occurrences of impact energy represented by the stress energy information that is within an i.sup.th energy threshold range, and a lower limit of the i.sup.th energy threshold range of the i.sup.th level of alarm condition is greater than an upper limit of an (i−1).sup.th energy threshold range of an (i−1).sup.th level of alarm condition, and m.sub.i<m.sub.i-1.

The present application discloses a method, apparatus, device, and system for monitoring battery pack safety. The method includes: obtaining, based on obtained stress data of a battery pack in an electric vehicle, stress energy information of the battery pack; determining a target-level alarm condition based on the stress energy information and sending corresponding alarm information, where the target-level alarm condition is a level of alarm condition in preset N levels of alarm conditions that the stress energy information satisfies, an i.sup.th level of alarm condition indicates that there are m.sub.i occurrences of impact energy represented by the stress energy information that is within an i.sup.th energy threshold range, and a lower limit of the i.sup.th energy threshold range of the i.sup.th level of alarm condition is greater than an upper limit of an (i−1).sup.th energy threshold range of an (i−1).sup.th level of alarm condition, and m.sub.i<m.sub.i-1.

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.

An apparatus for diagnosing an insulation condition between a battery pack and the ground includes a first resistor element electrically connected between a positive terminal of the battery pack and the ground, and a control circuit. The control circuit records a current flowing through the first test port as a first test current, while a high-level voltage is being applied between the positive terminal and the ground. The controller diagnoses the insulation condition between the battery pack and the ground, based on the first test current.

An apparatus for diagnosing an insulation condition between a battery pack and the ground includes a first resistor element electrically connected between a positive terminal of the battery pack and the ground, and a control circuit. The control circuit records a current flowing through the first test port as a first test current, while a high-level voltage is being applied between the positive terminal and the ground. The controller diagnoses the insulation condition between the battery pack and the ground, based on the first test current.

A battery module assembly includes a plurality of cells, a plurality of cartridges including a first cartridge (a cartridge A) and a second cartridge (a cartridge B) alternately stacked with a corresponding cell therebetween, and a caulking pipe inserted into a through hole provided in a corner of each of the stacked plurality of cartridges, for assembling the plurality of cartridges. A bus bar among main elements configuring a voltage sensing assembly is disposed in a frame configuring a short side among four frames configuring the first cartridge, and a sensing wire among the main elements configuring the voltage sensing assembly is disposed in two frames configuring a short side and one frame configuring a long side among four frames configuring the second cartridge.

An electronic device and a method performed in an electronic device for managing the power limit of a battery of a vehicle. The method including obtaining a first State of Health value of the battery at a first time, obtaining a second State of Health value of the battery at a second time, determining a rate of change of State of Health value of the battery, determining a power value by calculating a function that is dependent on the rate of change of State of Health of the battery and adjusting the power limit of the battery to the determined power value for managing the life time of the battery.

An electronic device and a method performed in an electronic device for managing the power limit of a battery of a vehicle. The method including obtaining a first State of Health value of the battery at a first time, obtaining a second State of Health value of the battery at a second time, determining a rate of change of State of Health value of the battery, determining a power value by calculating a function that is dependent on the rate of change of State of Health of the battery and adjusting the power limit of the battery to the determined power value for managing the life time of the battery.

The energy storage system includes battery cells, a subrack, a backplane, and a battery management system BMS. The subrack reserves a plurality of battery cell slots, the battery cells are connected to the backplane through the battery cell slots. The backplane is installed in the subrack, a first power terminal is reserved at a position corresponding to the battery cell slot on the backplane, and a plug-in power terminal is formed by a second power terminal of the battery cell together with the first power terminal. A power circuit, a sampling circuit, and an equalizer circuit are integrated into the backplane, and the power circuit, the sampling circuit, and the equalizer circuit are connected after the second power terminal is plugged and docked with the first power terminal. The BMS is connected to the backplane for managing the energy storage system.

A method comprises determining a first pressure increase in an electrochemical energy storage unit based on a first repetition rate, detecting that the first pressure increase has exceeded a first threshold value, determining a second pressure increase in the energy storage unit based on a second repetition rate, the second repetition rate being greater than the first repetition rate, detecting that the second pressure increase exceeds a second threshold value, and outputting a signal to a control unit based on detecting that the second pressure increase has exceeded the second threshold value.