Abstract: An abnormality detecting device detects abnormalities in a system including a plurality of battery assemblies each having a plurality of cells connected in series, and includes: a connecting component configured to connect and disconnect adjacent two of the battery assemblies; and a detachment detector configured to detect whether or not the connecting component has been detached.

Abstract: A failure in any of first switches is determined based on a voltage value of a battery assembly and a predetermined threshold. The voltage value is retained in a capacitor by turning on or off the first switches and a second switch, and obtained from a voltage detector a voltage value.

Abstract: An abnormality detection device includes: a coupling-capacitor having a first-end and a second-end coupled with a high-voltage circuit; a signal output unit; a signal extraction unit; and a signal input unit. The signal output unit is coupled with the first-end of the coupling-capacitor via a detection-resistor, and outputs an alternating-current inspection-signal. The signal extraction unit extracts the inspection-signal, as an extraction-signal, output between the detection-resistor and the coupling-capacitor. The signal input unit detects abnormality of insulation resistance of the high-voltage circuit based on a level of the inputted extraction-signal. The signal extraction unit includes a signal removing filter and a subtraction circuit. The filter removes a signal equal in frequency to the inspection-signal and passes low-frequency noises lower in frequency than the inspection-signal.

Abstract: An abnormality detecting device detects abnormalities in a system including a plurality of battery assemblies each having a plurality of cells connected in series, and includes: a connecting component configured to connect and disconnect adjacent two of the battery assemblies; and a detachment detector configured to detect whether or not the connecting component has been detached.

Abstract: A failure in any of first switches is determined based on a voltage value of a battery assembly and a predetermined threshold. The voltage value is retained in a capacitor by turning on or off the first switches and a second switch, and obtained from a voltage detector a voltage value.

Abstract: An abnormality detection device includes: a coupling-capacitor having a first-end and a second-end coupled with a high-voltage circuit; a signal output unit; a signal extraction unit; and a signal input unit. The signal output unit is coupled with the first-end of the coupling-capacitor via a detection-resistor, and outputs an alternating-current inspection-signal. The signal extraction unit extracts the inspection-signal, as an extraction-signal, output between the detection-resistor and the coupling-capacitor. The signal input unit detects abnormality of insulation resistance of the high-voltage circuit based on a level of the inputted extraction-signal. The signal extraction unit includes a signal removing filter and a subtraction circuit. The filter removes a signal equal in frequency to the inspection-signal and passes low-frequency noises lower in frequency than the inspection-signal.

Abstract: A case has a penetrating hole, which is provided with a breathable film. A protective structure comprises a protective ring and a protective cap, and is provided outside the case so as to cover the breathable film. A gap between the protective ring and the protective cap is an opening connecting the inside and outside of the protective structure. In a cross-sectional view, an outside upper edge of the opening (i.e. point B) is positioned on or inside a straight line connecting an outer edge of the breathable film (i.e. point C) and an inside lower edge of the opening (i.e. point A). The breathable film can be protected from an intentional load applied thereto.

Abstract: A case has a penetrating hole, which is provided with a breathable film. A protective structure comprises a protective ring and a protective cap, and is provided outside the case so as to cover the breathable film. A gap between the protective ring and the protective cap is an opening connecting the inside and outside of the protective structure. In a cross-sectional view, an outside upper edge of the opening (i.e. point B) is positioned on or inside a straight line connecting an outer edge of the breathable film (i.e. point C) and an inside lower edge of the opening (i.e. point A). The breathable film can be protected from an intentional load applied thereto.