A portable or handheld device or apparatus for jump starting a vehicle engine having a depleted or discharged starting battery. The portable or handheld device or apparatus for jump starting a vehicle engine includes a rechargeable lithium-ion (Li-ion) battery pack and a battery cell equalization circuit configured to prevent overcharging of one or more individual lithium-ion battery cells, which can cause fire, damage to the battery pack and device or apparatus for jump starting a vehicle, or personal injury to a user.

Battery powered devices are provided with electrically isolated outputs. One exemplary battery device comprises at least one battery; and control electronics configured to provide a plurality of outputs from one of the at least one battery, wherein the plurality of outputs comprise at least one output that is electrically isolated from at least one other output of the plurality of outputs that each provide power to one or more of a plurality of loads. In another exemplary battery device, the control electronics are configured to provide a plurality of outputs from one of the at least one battery, and further comprises a housing assembly comprising (i) at least two surfaces, wherein the at least two surfaces have a space therebetween configured to house the control electronics and the at least one battery; or (ii) a tubular structure configured to house the control electronics and the at least one battery.

The present disclosure relates to the technical field of energy storage devices, and discloses a battery module, a battery package and a vehicle. The battery module can include a plurality of battery cells arranged in a horizontal direction, the battery cell can include an electrode assembly and a battery case, and the electrode assembly can be accommodated in the battery case. The electrode assembly can include a first electrode sheet, a second electrode sheet, and a separator disposed between the first and second electrode sheets, wherein the dimension of the battery module in the horizontal direction can be larger than that in the vertical direction of the battery module. The electrode assembly can be of a wound structure or of a laminated structure. The present disclosure can effectively reduce the expansion deformation of the battery module.

A battery system includes a battery receiving device and a plurality of battery units. Each battery unit can be coupled bidirectionally and inductively to one another and/or to the receiving device for charging/discharging. The receiving device can be connected to an external electrical energy source and/or sink. Each battery unit includes a coil unit. The receiving device has a storage seat for each battery unit removable with a magnetically complementary connectable coil unit for inserting/removing a battery unit without tools. The coil unit has a single coil which is substantially shaped as an elliptical, elongated flat coil, arranged in a half-shell housing and embedded in a ferrite core half-shell of ferrite elements, with a coil unit ratio of thickness to length/width of at least 1:5. The coil unit of the battery unit and receiving device are formed mechanically separable with a maximum distance between the coil units of 110 mm.

This application provides a battery charging control method and device. Voltages of N cell units in an M.sup.th sampling period are obtained, and a voltage of the battery at each sampling moment among K sampling moments in said sampling period is calculated. Charging of the battery is stopped when the voltage of the battery increases monotonically in the M.sup.th sampling period and a trend of a fitting curve of the voltage of at least one cell unit among the N cell units in said sampling period is not rising.

A method for operating a battery having at least two battery cells includes a symmetrization process, in which states of charge of the battery cells are symmetrized continuously or repeatedly; a first measurement process that runs across a first predefined duration during symmetrization and in which measurements are performed repeatedly. In each of the measurements, the battery cell that has the lowest quiescent voltage out of the battery cells in the measurement is determined. It is determined whether the same battery cell was always determined as the battery cell having the lowest quiescent voltage during the first measurement process; and when this is the case a checking process is performed in which symmetrization is interrupted or terminated and it is checked whether the battery cell for which the lowest quiescent voltage was always determined during the first preceding measurement process exhibits increased charge loss that indicates a possible defect.

A control apparatus (1) includes a charge controller that, by using power when a lead-acid battery (3) or a lead-acid battery module (4) including a plurality of lead-acid batteries is discharged, performs refresh charge of another lead-acid battery (3) or another lead-acid battery module (4).

A power unit operable to power equipment, the power unit including an electric motor, multiple removable and rechargeable battery packs, multiple switching elements, and a control unit. Each of the switching elements is connected between one of the battery packs and the electric motor and operate in one of an open position or a closed position. The control unit is operable to manage the position of the switching elements. The control unit is configured to determine whether one or more battery packs are supplying power for the electric motor, measure a voltage of each of the battery packs, determine whether each of the voltage measurements is within a predetermined value to each other, calculate a pulse width modulated (PWM) signal for each of the switching elements, assign each PWM signal to one of the switching elements, and apply each of the PWM signals to the assigned switching element.

A vehicle, system and method of detecting an internal short in a battery pack of the vehicle. The system includes a plurality of sensors and a processor. The plurality of sensors obtains states of charge at battery cells of the battery pack. The processor discharges the battery pack to identify a first set of the battery cells based on the states of charge of the battery cells, charges the battery pack to identify a second set of the battery cells based on the states of charge of the battery cells, and generates an alarm when an intersection of the first set and the second set is non-empty.

A vehicle-mounted device for detecting battery state comprises a controller, a load unit, and a switch unit. The load unit is coupled to the battery, the switch unit is coupled between the battery and the load unit. The controller can control the switch unit to disconnect or connect the battery and the load unit at a predefined frequency. The controller can switch the load unit to generate ripple voltage on the battery, and measure the ripple voltage of each battery cell, an abnormal state of a battery can be determined according to the ripple voltage of each battery cell.