A vehicle battery device includes a plurality of battery cell groups in which battery cells are connected in series, connection switches which can switch an electrical connection between the plurality of battery cell groups to a series connection or a parallel connection, and current sensors which detect electric currents flowing in the respective battery cell groups in both of the series connection and the parallel connection, and the current sensor is provided in the vicinity of a positive electrode terminal or a negative electrode terminal of each of the battery cell groups.

The vehicle battery pack exchange system herein described charges renters for the time use interval, the energy needed to recharge the battery pack, and the battery wear their use has caused. Data on battery wear accelerating stress parameters such as current, voltage, temperature, and state of charge is collected for battery packs rented to vehicle users. Wear rates are estimated from the collected data. Then either users are charged for the wear they cause or wear is limited to some predetermined wear rate and users are charged a predetermined battery wear fee per kWh delivered by the battery pack. In either embodiment drivers are displayed information to adapt their driving to battery wear rates. Renters are charged for battery pack usage time, energy supplied by the rental station, and battery wear providing battery owners a secure return on their investment. This system accommodates both short term and sustained long term rentals. Long term rental of a single battery pack for local use gives convenience and low costs while short term rentals provide unlimited range via swapping exhausted packs for recharged units during extended travel.

The vehicle battery pack exchange system herein described charges renters for the time use interval, the energy needed to recharge the battery pack, and the battery wear their use has caused. Data on battery wear accelerating stress parameters such as current, voltage, temperature, and state of charge is collected for battery packs rented to vehicle users. Wear rates are estimated from the collected data. Then either users are charged for the wear they cause or wear is limited to some predetermined wear rate and users are charged a predetermined battery wear fee per kWh delivered by the battery pack. In either embodiment drivers are displayed information to adapt their driving to battery wear rates. Renters are charged for battery pack usage time, energy supplied by the rental station, and battery wear providing battery owners a secure return on their investment. This system accommodates both short term and sustained long term rentals. Long term rental of a single battery pack for local use gives convenience and low costs while short term rentals provide unlimited range via swapping exhausted packs for recharged units during extended travel.

In an upper cell unit (2146) and a lower cell unit (2147) comprising five battery cells, positive electrode terminals (2162, 2172) are set apart and aligned vertically, and negative electrode terminals (2167, 2177) are set apart and aligned vertically. When an electrical device body is rated at 36V, device-side terminals are in contact only at the upper terminals (2162, 2167), and short circuiting of the lower terminals (2172, 2177) is effected using a short bar 2059. When the electrical device body is rated at 18V, the upper and lower terminals (2162 and 2172, 2167 and 2177) are simultaneously made to contact the device-side terminals, and the upper cell unit (2146) and the lower cell unit (2147) assume a parallel connected state. Thus, it is possible to automatically switch the output voltage when a battery pack is mounted according to the difference in terminal shape on the electrical device body side.

The invention relates to a power tool and battery pack assembly including a battery pack for connection with the power tool to provide power for the operation of the power tool when connected thereto. The battery pack includes a plurality of power cells and connection means are provided to allow the selective supply of power at least a first or second voltage level to the power tool from the battery pack.

A module battery system is disclosed and, more specifically, a module battery system which can select and output a desired capacity through a combination of a plurality of battery modules and notify the outside of an abnormal situation through a self-diagnosis and performs a self-protection operation as necessary at the same time.

A module battery system is disclosed and, more specifically, a module battery system which can select and output a desired capacity through a combination of a plurality of battery modules and notify the outside of an abnormal situation through a self-diagnosis and performs a self-protection operation as necessary at the same time.

A toggle electrode disposed on the bottom end of a battery assembly. The toggle electrode includes a rotating shaft and a toggle. The battery assembly includes a negative terminal of an input end soldered on the rotating shaft and a battery. The rotating shaft is connected to the toggle. The toggle is rotatable around the battery to contact or not contact the negative terminal of the battery. When the toggle is not in contact with the negative terminal of the battery, the battery is removable for replacement. The toggle is in contact with the negative terminal of the battery for electric conduction.

A battery module disclosed herein includes a plurality of submodules, and a housing that houses the submodules. Each of the plurality of submodules includes: a cell group in which single cells are arranged; and a constraining member exerting a constraining pressure in an arrangement direction of the plurality of single cells. Inside the housing of the battery module disclosed herein, there is a region where the temperature is likely to be relatively low when charging-discharging of the plurality of submodules is performed, and among the plurality of submodules, a submodule arranged in the region where the temperature is likely to be low has a lower constraining pressure than those in the other submodules.

A dual vaporizer battery device is provided. The device includes a first battery housing having a first end opposite a second end and a second battery housing having a proximal end opposite a distal end. A first battery is disposed within the first battery housing and a second battery is disposed within the second battery housing. The first end is pivotally affixed to the proximal end via a hinge. The first battery housing is selectively movable relative to the second battery housing between a linear configuration and a parallel configuration. The first battery housing is coaxial relative to the second battery housing when in the linear configuration. A connector is disposed on each of the second end and the distal end, wherein each connector removably secures a vaporizer housing thereto, such that each vaporizer housing is in operable communication with each of the first and second batteries.