Electrical storage system
First Claim
1. An electrical storage system comprising:
- an electrical storage device in which a plurality of electrical storage blocks configured to be charged or discharged are connected in series with each other;
a relay configured to switch between an on state where the electrical storage device is connected to a load and an off state where connection of the electrical storage device with the load is interrupted;
a controller configured to control an on-off state of the relay; and
a current interruption circuit configured to interrupt energization of the electrical storage device by causing the relay to switch from the on state to the off state,the current interruption circuit includingan alarm circuit configured to output an alarm signal indicating that any one of the electrical storage blocks is in an overcharged state by comparing a voltage value of each of the electrical storage blocks with a threshold;
a latch circuit configured to retain the alarm signal;
a transistor configured to cause the relay to switch from the on state to the off state upon reception of an output signal of the latch circuit;
a power supply circuit configured to generate electric power for operating the latch circuit using electric power of the electrical storage device; and
a plug configured to be movable between a first position in which energization of the electrical storage device is allowed and a second position in which energization of the electrical storage device is interrupted in response to a user'"'"'s operation, the plug being configured to interrupt a line, through which electric power of the power supply circuit is supplied to the latch circuit, by being moved to the second position.
1 Assignment
0 Petitions
Accused Products
Abstract
An electrical storage system includes a relay switching between an on state where an electrical storage device (10) is connected to a load and an off state where connection of the electrical storage device with the load is interrupted; a controller controlling an on-off state of the relay; and a current interruption circuit (60) interrupting energization of the electrical storage device. The current interruption circuit includes an alarm circuit (63) outputting an alarm signal indicating that any one electrical storage block is in an overcharged state by comparing a voltage value of each electrical storage block with a threshold; a latch circuit (64) retaining the alarm signal; a transistor (66) causing the relay to switch from the on state to the off state upon reception of an output signal of the latch circuit; and a power supply circuit (63d) generating electric power for operating the latch circuit using electric power of the electrical storage device.
-
Citations
7 Claims
-
1. An electrical storage system comprising:
-
an electrical storage device in which a plurality of electrical storage blocks configured to be charged or discharged are connected in series with each other; a relay configured to switch between an on state where the electrical storage device is connected to a load and an off state where connection of the electrical storage device with the load is interrupted; a controller configured to control an on-off state of the relay; and a current interruption circuit configured to interrupt energization of the electrical storage device by causing the relay to switch from the on state to the off state, the current interruption circuit including an alarm circuit configured to output an alarm signal indicating that any one of the electrical storage blocks is in an overcharged state by comparing a voltage value of each of the electrical storage blocks with a threshold; a latch circuit configured to retain the alarm signal; a transistor configured to cause the relay to switch from the on state to the off state upon reception of an output signal of the latch circuit; a power supply circuit configured to generate electric power for operating the latch circuit using electric power of the electrical storage device; and a plug configured to be movable between a first position in which energization of the electrical storage device is allowed and a second position in which energization of the electrical storage device is interrupted in response to a user'"'"'s operation, the plug being configured to interrupt a line, through which electric power of the power supply circuit is supplied to the latch circuit, by being moved to the second position. - View Dependent Claims (2, 7)
-
-
3. An electrical storage system comprising:
-
an electrical storage device in which a plurality of electrical storage blocks configured to be charged or discharged are connected in series with each other; a relay configured to switch between an on state where the electrical storage device is connected to a load and an off state where connection of the electrical storage device with the load is interrupted; a controller configured to control an on-off state of the relay; and a current interruption circuit configured to interrupt energization of the electrical storage device by causing the relay to switch from the on state to the off state, the current interruption circuit including an alarm circuit configured to output an alarm signal indicating that any one of the electrical storage blocks is in an overcharged state by comparing a voltage value of each of the electrical storage blocks with a threshold; a latch circuit configured to retain the alarm signal; a photocoupler configured to generate an input signal of the latch circuit upon reception of an output signal of the alarm circuit; and a transistor configured to cause the relay to switch from the on state to the off state upon reception of an output signal of the latch circuit, and the latch circuit being configured to operate upon reception of electric power supplied from a power supply configured to supply electric power to the photocoupler and the transistor, wherein the electrical storage device is mounted on a vehicle, the electrical storage device being configured to output energy used to cause the vehicle to travel, supply of electric power from the power supply to the electrical storage device being interrupted in response to switching of an ignition switch of the vehicle from an on state to an off state. - View Dependent Claims (4, 5, 6)
-
Specification