Abstract: In each of battery modules, a processing circuit manages a battery unit connected to a power line. A communication circuit communicates data to be transmitted or received by the processing circuit. An isolated circuit insulates in a direct current between a first terminal of the communication circuit and a positive-electrode terminal or a negative-electrode terminal of the battery unit, and between a second terminal of the communication circuit and a conductive body to be a common potential of a plurality of the battery modules except for the power line.

Abstract: A management device manages a plurality of power storage devices interconnected in parallel. In the management device, a halt controller halts an operation of at least one of the plurality of power storage devices during a period in which charged/discharged power between the plurality of power storage devices and a load is less than a set value. During the period in which the charged/discharged power is less than the set value, for example, the halt controller, by turns, halts an operation of one of the plurality of power storage devices at a set time interval.

Abstract: In a power storage system, each of a plurality of power storage modules includes at least one cell, and the plurality of power storage modules are connected in series. A management device manages the plurality of power storage modules. Each of the plurality of power storage modules contains a first insulation unit having a primary side and a secondary side that are insulated from each other. The first insulation unit outputs a signal containing information of at least one cell to a communication line. The signal is referenced to predetermined standard voltage between a voltage at one end and a voltage at the other end of the plurality of power storage modules. The management device contains a second insulation unit having a primary side and a secondary side that are insulated from each other, and a circuit unit insulated from the communication line by the second insulation unit.

Abstract: In each of battery modules, a processing circuit manages a battery unit connected to a power line. A communication circuit communicates data to be transmitted or received by the processing circuit. An isolated circuit insulates in a direct current between a first terminal of the communication circuit and a positive-electrode terminal or a negative-electrode terminal of the battery unit, and between a second terminal of the communication circuit and a conductive body to be a common potential of a plurality of the battery modules except for the power line.

Abstract: In each of battery modules (120) of a battery block (100) configuring a battery management system (10), a first insulating device having a first insulation distance is disposed between a first region (132) in which a battery side controller (146) is installed and a second region (134) in which a first communication unit (150) is installed. In a control device (200) coupled to the battery block (100) with a communication line, a second insulating device (234) having a second insulation distance is disposed between a relay region (222) and a third region (220) in which a second communication unit is installed, and a third insulating device (236) having a third insulation distance is disposed between the relay region (222) and a fourth region (224) in which a control controller unit (238) is installed.

Abstract: A battery management system includes a circuit board having a first region provided with a voltage measuring unit, a second region provided with a controller, a relay region that is disposed at a first insulation distance from the first region and at a second insulation distance from the second region, and a third region provided with an interface connecting unit. The third region is disposed at a third insulation distance from the second region. The third insulation distance is shorter than each of the first and the second insulation distances. The battery management system further includes a first insulating device connecting between the first region and the relay region, a second insulating device connecting between the relay region and the second region, and a third insulating device connecting between the second region and the third region.

Abstract: In a power storage system, each of a plurality of power storage modules includes at least one cell, and the plurality of power storage modules are connected in series. A management device manages the plurality of power storage modules. Each of the plurality of power storage modules contains a first insulation unit having a primary side and a secondary side that are insulated from each other. The first insulation unit outputs a signal containing information of at least one cell to a communication line. The signal is referenced to predetermined standard voltage between a voltage at one end and a voltage at the other end of the plurality of power storage modules. The management device contains a second insulation unit having a primary side and a secondary side that are insulated from each other, and a circuit unit insulated from the communication line by the second insulation unit.

Abstract: In each of battery modules (120) of a battery block (100) configuring a battery management system (10), a first insulating device having a first insulation distance is disposed between a first region (132) in which a battery side controller (146) is installed and a second region (134) in which a first communication unit (150) is installed. In a control device (200) coupled to the battery block (100) with a communication line, a second insulating device (234) having a second insulation distance is disposed between a relay region (222) and a third region (220) in which a second communication unit is installed, and a third insulating device (236) having a third insulation distance is disposed between the relay region (222) and a fourth region (224) in which a control controller unit (238) is installed.

Abstract: A management device (50m) manages a plurality of power storage devices (10 to 40) interconnected in parallel. In the management device (50m), a halt controller (541m) halts an operation of at least one of the plurality of power storage devices (10 to 40) during a period in which charged/discharged power between the plurality of power storage devices (10 to 40) and a load (2) is less than a set value. During the period in which the charged/discharged power is less than the set value, for example, the halt controller (541m), by turns, halts an operation of one of the plurality of power storage devices at a set time interval.

Abstract: A battery management system includes a circuit board having a first region provided with a voltage measuring unit, a second region provided with a controller, a relay region that is disposed at a first insulation distance from the first region and at a second insulation distance from the second region, and a third region provided with an interface connecting unit. The third region is disposed at a third insulation distance from the second region. The third insulation distance is shorter than each of the first and the second insulation distances. The battery management system further includes a first insulating device connecting between the fist region and the relay region, a second insulating device connecting between the relay region and the second region, and a third insulating device connecting between the second region and the third region.

Abstract: A battery warming circuit is a circuit installed in a vehicle provided with an inverter circuit, which is supplied with direct current electrical power from a secondary battery, and a 3-phase alternating current motor, and this circuit includes: a switch control unit, which has first and second terminals connected to control terminals of first and second switching elements, and controls turning the first and second switching elements on and off; an accumulation unit which has a third terminal connected to the other end of a specific coil, and accumulates back electromotive force generated in the specific coil by turning the second switching element on and off, with the first switching element being turned on; and a charging control unit which is provided between the positive electrode of the secondary battery and the accumulation unit, and supplies electrical power accumulated in the accumulation unit to the secondary battery.

Abstract: A battery warming circuit is a circuit installed in a vehicle provided with an inverter circuit, which is supplied with direct current electrical power from a secondary battery, and a 3-phase alternating current motor, and this circuit includes: a switch control unit, which has first and second terminals connected to control terminals of first and second switching elements, and controls turning the first and second switching elements on and off; an accumulation unit which has a third terminal connected to the other end of a specific coil, and accumulates back electromotive force generated in the specific coil by turning the second switching element on and off, with the first switching element being turned on; and a charging control unit which is provided between the positive electrode of the secondary battery and the accumulation unit, and supplies electrical power accumulated in the accumulation unit to the secondary battery.