The present invention relates to a system and a method for controlling a relay using a flip-flop, in which a flip-flop controlling a relay by receiving a signal of a control unit in a battery management system of a vehicle and supply flip-flop operation power to the flip-flop through a monitoring circuit connected to a battery of the vehicle when operation power of the battery management system of the vehicle is interrupted to maintain a closing state of a relay controlling driving power of the vehicle and to conserve power of the vehicle for a predetermined time.

The invention relates to a system 1 for controlling a voltage converter comprising a plurality of high-side switches forming a high group and a plurality of low-side switches forming a low group, the control system 1 comprising: a module 10 for measuring a voltage V of the DC voltage source B, a module 11 for comparing the measured voltage V with a first safety threshold OV1, a control module 12 for controlling a first group of switches so as to close chosen from the high group or the low group, if the comparison module 11 indicates that the measured voltage V is higher than the first safety threshold OV1.

The invention provides for a high occupancy or heavy-duty vehicle with a battery propulsion power source, which may include lithium titanate batteries. The vehicle may be all-battery or may be a hybrid, and may have a composite body. The vehicle battery system may be housed within the floor of the vehicle and may have different groupings and arrangements.

A connector device includes a motor-side connector 30 including a motor-side terminal 31, an inverter-side connector 60 including an inverter-side terminal 70, a motor case 10 including the motor-side connector 30, and an inverter case 50 including the inverter-side connector 60, the connectors 30, 60 being fitted together when the inverter case 50 is stacked on and fastened to the motor case 10 using bolts 120. When the fastening of the cases 10, 50 is completed, a predetermined gap is ensured between opposing surfaces 36B, 80A of the connectors 30, 60.

A battery pack is provided. The battery pack including a plurality of battery cells; a cell holder including a peripheral wall and a plurality of cell storage units; and a plurality of ribs integrally molded with the cell holder between the peripheral wall of the cell holder and the cell storage unit.

Systems and methods provide an alternative high voltage cutoff technique for disconnecting a high voltage battery from an electrical network of a vehicle in the event of a fault condition. Embodiments include a vehicle system comprising an electrical bus and a battery module coupled to the electrical bus via a contactor and a disconnector. The vehicle system further includes a controller configured to switch the contactor to an open state, upon receiving a fault condition signal, and if the contactor failed to open, activating the disconnector to break electrical connection between the battery module and the electrical bus. In some embodiments, the fault condition signal is generated upon detecting a vehicular impact. In some embodiments, the disconnector is a pyrotechnic device powered by a vehicle battery included in the vehicle system.

In one embodiment, an apparatus for redundant control of active fuses for battery pack safety is provided, comprising a battery; an electrical load coupled to the battery via a fuse capable of being activated by an electrical signal; a sensor configured to sense a short circuit condition at the electrical load and output an analog sensor signal; an analog-to-digital converter configured to sample the analog sensor signal and output a digital sensor signal; a microcontroller configured to detect the short circuit condition at the electrical load based on the digital sensor signal, and, during normal operation, to output a first electrical signal to activate the fuse after detecting the short circuit condition at the electrical load; and an analog circuit configured to operate independently of the microcontroller to receive the analog sensor signal and output a second electrical signal to activate the fuse after receiving the analog sensor signal.

A battery with at least two battery cells, which are connected by at least one electric connection element to one another, and a superordinate control device. Each of the battery cells is provided with at least one galvanic element, a battery cell housing for accommodating the galvanic element, at least one sensor device for detecting a physical and/or chemical feature of the battery cell, and a communication device for communicating with the superordinate device. The superordinate device is adapted to control an energy flow in at least one of the battery cells and/or from at least one of the battery cells as a function of the physical and/or chemical features of the battery cell. The invention further also relates to a motor vehicle with such a battery.

In an electric vehicle, a power supplier includes a software type condenser charging circuit and a hardware type condenser charging circuit. The software capacitor charging circuit operates when a controller controls the software type condenser charging circuit while monitoring a voltage between opposite ends at an initial charging stage. The hardware type condenser charging circuit is operated when the controller controls the hardware type condenser charging circuit without monitoring the voltage between the opposite ends of the DC-link condenser or by direct switching manipulation of a user.

A vehicle includes: a battery pack including a secondary battery, a battery sensor configured to detect a state of the secondary battery, and a first control device; and a second control device provided separately from the battery pack, wherein: the first control device is configured to set a power upper limit value indicating an upper limit value of a battery power of the secondary battery by using a detection value of the battery sensor; and the second control device is configured to set a guard value of the upper limit value of the battery power by using a temperature of the secondary battery and set the power upper limit value such that the power upper limit value does not exceed the guard value.