Power supply device, electric vehicle provided with power supply device, and power storage device
AssigneeSanyo Electric Co., Ltd.
InventorsJun Asakura, Junya Yano
Life of this patent
Estimating the term…
Abstract
A power supply device connects a plurality of battery modules including a plurality of battery cells by power line. Battery module includes cell monitor circuit that detects battery information, and a plurality of cell monitor circuits provided in each battery module are cascade-connected via communication line. Cell monitor circuit includes communication interface including connection parts formed by connecting communication line, and communication interface sets a withstand voltage applied to connection part to be higher than an output voltage of the power supply device.
Claims15
A power supply device comprising:
- a plurality of battery modules each including a plurality of battery cells;
- and
- a power line connecting the plurality of battery modules,
- wherein each of the battery modules includes a cell monitor circuit that detects battery information,
- a plurality of the cell monitor circuits are cascade-connected via a communication line,
- the cell monitor circuit includes a communication interface including a connection part for connecting the communication line to the communication interface,
- the communication interface sets a withstand voltage applied to the connection part to be a voltage higher than an output voltage of the power supply device, and
- the communication line includes a non-parallel communication line connected to a cell monitor circuit of a battery module different from a battery module to which the power line is connected among the plurality of battery modules.
A power supply device comprising:
- a plurality of battery modules each including a plurality of battery cells;
- and
- a power line connecting the plurality of battery modules,
- wherein each of the battery modules includes a cell monitor circuit that detects battery information,
- a plurality of the cell monitor circuits are cascade-connected via a communication line,
- the cell monitor circuit includes a communication interface including a connection part for connecting the communication line to the communication interface,
- the communication interface sets a withstand voltage applied to the connection part to be a voltage higher than an output voltage of the power supply device,
- the communication interface includes a coupling element that blocks a direct current to cause an alternating current to pass on an output side of the communication interface, and
- a withstand voltage of the coupling element is higher than the output voltage of the power supply device.
A power supply device comprising:
- a plurality of battery modules each including a plurality of battery cells;
- and
- a power line connecting the plurality of battery modules,
- wherein each of the battery modules includes a cell monitor circuit that detects battery information,
- a plurality of the cell monitor circuits are cascade-connected via a communication line,
- the cell monitor circuit includes a communication interface including a connection part for connecting the communication line to the communication interface,
- the communication interface sets a withstand voltage applied to the connection part to be a voltage higher than an output voltage of the power supply device,
- the plurality of the battery modules are arranged in multiple stages and multiple rows,
- vertical partitioned regions and horizontal partitioned regions are provided in a grid pattern between the battery modules adjacent to each other,
- any one of (i) the vertical partitioned regions and (ii) the horizontal partitioned regions are wiring spaces where the communication line is wired, and
- the other of (i) the vertical partitioned regions and (ii) the horizontal partitioned regions are non-wiring spaces where the communication line is not wired.
Dependencies are inferred from the claim text.