Electrically-driven working apparatus and method for protecting battery of electrically-driven working apparatus
First Claim
1. An electrically-driven working apparatus comprising:
- a battery;
an abnormality detection circuit configured to detect either an overload or an over discharge of the battery;
a power supply path configured to be connected to the battery;
a first disconnection circuit and a second disconnection circuit, each of the first disconnection circuit and the second disconnection circuit being provided in the power supply path to be operable to disconnect the power supply path; and
a control circuit configured (i) to activate the first disconnection circuit to disconnect the power supply path if either of the overload or the over discharge is detected by the abnormality detection circuit, (ii) to subsequently determine whether discharge from the battery has stopped based on a current flowing in the power supply path and/or a change in temperature of one of the battery and the electrically-driven working apparatus after activating the first disconnection circuit, and (iii) to activate the second disconnection circuit to disconnect the power supply path if discharge from the battery has not stopped.
1 Assignment
0 Petitions
Accused Products
Abstract
An electrically-driven working apparatus in one aspect of an embodiment of the present disclosure comprises: a battery; an abnormality detection unit; a power supply path; a first disconnection unit; a second disconnection unit; and a control unit. The control unit activates the first disconnection unit to disconnect the power supply path if either of an overload or an over discharge of the battery is detected by the abnormality detection unit, and subsequently determines whether discharge from the battery has stopped after activating the first disconnection unit, and activates the second disconnection unit to disconnect the power supply path if discharge from the battery has not stopped.
-
Citations
16 Claims
-
1. An electrically-driven working apparatus comprising:
-
a battery; an abnormality detection circuit configured to detect either an overload or an over discharge of the battery; a power supply path configured to be connected to the battery; a first disconnection circuit and a second disconnection circuit, each of the first disconnection circuit and the second disconnection circuit being provided in the power supply path to be operable to disconnect the power supply path; and a control circuit configured (i) to activate the first disconnection circuit to disconnect the power supply path if either of the overload or the over discharge is detected by the abnormality detection circuit, (ii) to subsequently determine whether discharge from the battery has stopped based on a current flowing in the power supply path and/or a change in temperature of one of the battery and the electrically-driven working apparatus after activating the first disconnection circuit, and (iii) to activate the second disconnection circuit to disconnect the power supply path if discharge from the battery has not stopped. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
-
-
15. A method for protecting a battery of an electrically-driven working apparatus, the method comprising:
-
providing a first disconnection circuit and a second disconnection circuit in a power supply path, which is to be connected to the battery, in the electrically-driven working apparatus, each of the first disconnection circuit and the second disconnection circuit being operable to disconnect the power supply path; detecting one of an overload and an over discharge of the battery; activating the first disconnection circuit when the one of the overload and the over discharge is detected; determining whether discharge from the battery has stopped based on a current flowing in the power supply path and/or a change in temperature of one of the battery and the electrically-driven working apparatus after activating the first disconnection circuit; and activating the second disconnection circuit if discharge from the battery has not stopped after activating the first disconnection circuit. - View Dependent Claims (16)
-
Specification