A battery pack includes a protective circuit module (PCM) including a first incoming power terminal and a second outgoing power terminal; a first pouch battery including a third power terminal and a fourth power terminal, wherein the third power terminal is electrically connected to the first power terminal; and a protective enclosure including a base plate and a wall extending perpendicularly from the base plate, wherein the PCM and a portion of the first pouch battery are disposed in the protective enclosure, wherein the portion of the first pouch battery includes the third power terminal and the fourth power terminal that cannot be accessed directly, wherein the PCM is affixed to the base plate, wherein the second power terminal of the PCM and at least one of the third power terminal and the fourth power terminal of the first pouch battery extend beyond the wall of the protective enclosure.

Stackable battery assemblies and methods of use are disclosed herein. An example battery assembly includes an energy storage device, a housing having a locking unit, a receiver unit, and a sidewall that are interconnected to form an enclosure that retains the energy storage device. The locking unit can include a plate that is spaced apart from the sidewall of the housing by a second sidewall, the plate supporting a first electrical connector that is electrically coupled to the energy storage device via a locking member. The receiver unit can include a third sidewall that defines a cavity that is shaped to correspond with the locking unit, the third sidewall having a lock notch and a second electrical connector that is electrically coupled to the energy storage device.

Stackable battery assemblies and methods of use are disclosed herein. An example battery assembly includes an energy storage device, a housing having a locking unit, a receiver unit, and a sidewall that are interconnected to form an enclosure that retains the energy storage device. The locking unit can include a plate that is spaced apart from the sidewall of the housing by a second sidewall, the plate supporting a first electrical connector that is electrically coupled to the energy storage device via a locking member. The receiver unit can include a third sidewall that defines a cavity that is shaped to correspond with the locking unit, the third sidewall having a lock notch and a second electrical connector that is electrically coupled to the energy storage device.

A security device for a battery pack includes a cap, which covers at least a portion of a slide mechanism of a slide battery pack, and a strap. The cap includes a first collar disposed around a first opening and a second collar disposed around a second opening, with the first collar and the second collar aligned along a longitudinal axis of the slide battery pack. The strap matches a contour of the slide battery pack and includes a first projection and a second projection. The strap is positioned along the longitudinal axis of the slide battery pack and the cap is positioned over the strap with the first projection inserted through the first opening and the first collar and the second projection inserted through the second opening and the second collar to secure the cap to the strap and to the slide battery pack.

Disclosed herein are anti-theft battery systems and methods to reduce theft of expensive batteries, such as may be used as a backup power source in communication systems. These anti-theft battery systems include a battery having a BMS, current control circuit, and/or GPS. The battery may also be coupled to a system controller. These anti-theft battery systems allow the battery charge/discharge current to be controlled via a current control circuit within the battery, such as whenever communication is lost between the battery and the system controller, and/or whenever a GPS tracker within the battery indicates a change of location, and/or whenever the battery is connected/disconnected to/from a load. Whenever the current control circuit detects one of these changes in condition, it resets the charge/discharge current to low power, or voltage, such as less than 1%, thus making the battery useless and unable to perform charging and discharging, thus deterring theft.

The present invention reduces the effort involved in an operation for cancelling a current cutoff device while inhibiting a capacity decline during parking. Provided is a battery device 20 that is to be mounted on a vehicle, and that is provided with: an assembled battery 30 that supplies electric power to loads 10 including an engine starting device 10A; a current cutoff device 45 that cuts off an electric current to the loads 10 from the assembled battery 30; and a control unit 70, wherein upon detecting a parked state of the vehicle, the control unit 70 operates the current breaker device 45 so as to execute a current cutoff process for cutting off the current flowing from the assembled battery 30 to the loads 10, and following the execution of the current cutoff process, if a prior action to be performed on the vehicle by a user before starting driving is detected, the control unit 70 cancels the cutoff of current by cancelling the operation of the current breaker device 45.

Described herein are a system and methods for evaluating operation of a battery utilizing battery operating data and exogenous data. The method may comprise: sensing, for each battery in a plurality of batteries, a temperature of the battery and a voltage of the battery (collectively, for each battery, the battery operating data), wherein each battery has a respective battery monitor circuit coupled thereto or disposed therein, and wherein the sensing of the battery operating data for each battery is performed by the respective battery monitor circuit; wirelessly transmitting, from each battery monitor circuit, the battery operating data for the respective battery to a remote device; receiving, at the remote device, exogenous data associated with at least one battery in the plurality of batteries; and utilizing the exogenous data associated with the battery, together with the battery operating data for that battery, to evaluate performance of that battery.

Described herein are system and methods for evaluating operation of a battery by utilizing battery operating data for the battery and utilizing battery operating data for a plurality of other batteries. The method may comprise: sensing a temperature of the battery and a voltage of the battery as battery operating data; wirelessly transmitting the battery operating data for the respective battery to a remote device; receiving at the remote device design characteristics or operating characteristics for each battery; logging by the remote device the battery operating data received from each battery monitor circuit; and evaluating, by the remote device, a condition of a first battery in the plurality of batteries as a function of the battery operating data of the first battery by comparing the battery operating data of the first battery with the battery operating data of the other batteries in the plurality of batteries.

A system for determining an operating mode of a battery includes a voltage sensor configured to detect a present voltage across terminals of the battery. The system further includes a non-transitory memory configured to store previously detected voltages across the terminals of the battery, and a previous operating mode of the battery. The system further includes a processor coupled to the voltage sensor and the non-transitory memory and configured to determine the operating mode of the battery by comparing the present voltage across the terminals of the battery to the previously detected voltages of the battery and based on the previous operating mode of the battery.

A method of determining a reserve time of a monobloc includes detecting, by a voltage sensor, an end of discharge voltage of the monobloc after a deep discharge of the monobloc. The method further includes receiving, by a processor, the end of discharge voltage of the monobloc. The method further includes determining or receiving, by the processor, a duration of the deep discharge. The method further includes calculating, by the processor, a discharge reserve time of the monobloc based on the end of discharge voltage and the duration of the deep discharge.