A battery module including: a plurality of battery cell assemblies, where each battery cell assembly includes at least one battery cell; a heat sink located under the plurality of battery cell assemblies; and a coil resistor unit connected to at least one of the plurality of battery cell assemblies.

The hybrid battery system includes a primary battery pack, a secondary battery pack, a battery control unit, a battery pack positive terminal, and a battery pack negative terminal. The battery control unit includes a management module and a variable resistor. The primary battery pack supplies power at lower temperatures, while the secondary battery pack supplies power at higher temperatures. The primary battery pack is unsafe at higher temperatures, and the primary cells within the primary battery pack are modified to mitigate the dangers that previously rendered the primary battery pack unusable in a hybrid battery pack at higher temperatures. The invention includes the method of safely operating the hybrid battery system with the modified primary battery cells of the primary battery pack.

A battery pack includes a pack case configured to form an appearance, a plurality of battery modules configured to include at least one battery cell; at least one insulation member provided between the plurality of battery modules; and an energy drain unit spaced apart from the insulation member and connected to any one battery module, the energy drain unit being configured to externally short-circuit any one battery module when thermal runaway occurs in at least one battery module.

A battery pack includes at least one cell assembly including a plurality of battery cells, an energy consumer configured to discharge the at least one cell assembly when thermal runaway occurs in at least one of the plurality of battery cells, and a storage unit in which the energy consumption unit consumer is received inside, and configured to discharge at least part of the energy consumer to outside when the energy consumer discharges the cell assembly.

A secondary battery protection circuit for controlling charge and discharge using a switching circuit to protect a secondary battery from temperature is provided. The switching circuit is configured to be provided in a charge-and-discharge path between the secondary battery and an external device. The secondary battery protection circuit includes a detection terminal configured to be electrically connected, via a resistor, to between the switching circuit and the external device. The secondary battery protection circuit includes a first terminal configured to be electrically connected to a temperature detection terminal of the external device. The secondary battery protection circuit includes a second terminal to which a temperature sensitive element is configured to be electrically connected, the temperature sensitive element having a characteristic value varying in accordance with a change in temperature of the secondary battery.

A battery pack includes a means configured to, when an abnormal phenomenon, such as fire outbreak or heat generation, occurs in a battery cell, prevent fire or heat from propagating to another battery cell adjacent thereto. The battery pack includes a plurality of battery cells, a case configured to receive the plurality of battery cells, an energy discharging means configured to discharge energy of the battery pack when the abnormal phenomenon occurs, and a fire extinguishing means configured to discharge aerosol at an operating temperature or higher in order to extinguish flames generated in the battery pack.

A control unit for a battery system, comprising: a microcontroller configured to generate a first control signal; a monitoring unit configured to generate a fault signal indicative of the operational state of the microcontroller; a first signal source configured to generate a state signal indicative of a system state; a comparator circuit configured to generate an intermediate control signal based on a first control signal and a fault signal; the comparator circuit further comprising a comparator node, the comparator circuit configured to transmit the intermediate control signal to the comparator node; wherein the first signal source is connected to the comparator node to transmit the state signal to the comparator node; the comparator circuit further comprises a comparator connected to the comparator node and configured to generate a switch control signal based on a voltage on the comparator node and based on a threshold voltage.

The present disclosure relates to a battery management device for balancing state of charges (SOCs) of a plurality of battery cells while maintaining a substrate temperature of a substrate to which a balancing resistor of each of a plurality of battery cells is mounted to a reference temperature or below. Since the substrate temperature is maintained at the reference temperature or below by controlling the duty cycle of a balancing switch, it is possible to prevent components included in the battery management device from being overheated and damaged due to the heat generated during the balancing process.

The invention relates to a battery system (B), in particular a lithium-ion battery system, comprising at least one apparatus (V) for increasing safety when using the battery system (B), and comprising at least one discharge device (EV) suitable for electrical discharge of the battery system (B), wherein the at least one apparatus (V) is an apparatus for converting electrical energy from the battery system (B) into non-electrical energy, and the at least one apparatus (V) is connected to the discharge device (EV) at least in the case of a discharge of the battery system (B).

An electricity storage device includes a battery, a discharge device, and a controller for controlling charging and discharging of the battery. The discharge device includes a swelling member, a movable switch, and a discharge switch. When the swelling member swells, the movable switch is moved. When the movable switch is moved, the discharge switch is turned on. A signal indicating that the discharge switch is turned on is transmitted to the controller to cause the battery to start discharging of electricity.