Abstract: A power supply protective device, includes: a first switch provided between a first terminal to which at least one of a load and a charger is connected and a second terminal to which a power supply is connected; a switching circuit connected in parallel to the first switch and including a second switch and a voltage drop element connected in series to the second switch, the voltage drop element causing a voltage drop of a reference voltage by a current flow; a voltage detection unit which detects at least one voltage of a first voltage as a voltage of the first terminal, a second voltage as a voltage of the second terminal, and a third voltage as a voltage at a point between the second switch and the voltage drop element; and a control unit.

Abstract: An electric energy management system includes: an energy storage device; a generator connected to the energy storage device; a load which is connected to the energy storage device and to the generator and is operated with a supply of an electric energy from the energy storage device and the generator; an electric energy control part configured to control the supply of electric energy to the load from the generator; a detection part configured to detect an abnormal state of the energy storage device; a current cutoff part configured to cut off an electric current between the energy storage device and the load; and a control part configured to issue an advance notice to cut off the electric current to the electric energy control part after the abnormal state is detected by the detection part and before the electric current is cut off by the current cutoff part. The electric energy control part is configured to control the supply of electric energy to the load from the generator based on the advance notice.

Abstract: A vehicle communication system includes: a control device 10B provided in a vehicle; and a management device 50 that is provided in a battery 20 mounted on the vehicle while communicably connected to the control device 10B. One of the control device 10B and the management device 50 discriminates a communication specification of the other and switches the communication specification. In this configuration, consistency of the communication specification is attained between the control device 10B of the vehicle and the battery 20, so that disability of communication between the control device 10B and the battery 20 can be prevented.

Abstract: A power supply protective device, includes: a first switch provided between a first terminal to which at least one of a load and a charger is connected and a second terminal to which a power supply is connected; a switching circuit connected in parallel to the first switch and including a second switch and a voltage drop element connected in series to the second switch, the voltage drop element causing a voltage drop of a reference voltage by a current flow; a voltage detection unit which detects at least one voltage of a first voltage as a voltage of the first terminal, a second voltage as a voltage of the second terminal, and a third voltage as a voltage at a point between the second switch and the voltage drop element; and a control unit.

Abstract: A power supply protective device, when obtaining an open voltage when a second switch is brought into a closed state and a first switch is brought into an open state during discharging of a power supply, and obtaining a close voltage when the second switch is brought into the closed state and the first switch is brought into the closed state during discharging of the power supply, diagnoses the first switch as having a failure or not on the basis of the open voltage and the close voltage. When executing first a close instruction to the first switch and the second switch, if a voltage difference is less than a first threshold voltage, the first switch is determined to have no open failure, and/or when not less than a second threshold voltage, the second switch is determined to have no open failure.

Abstract: A vehicle communication system includes: a control device 10B provided in a vehicle; and a management device 50 that is provided in a battery 20 mounted on the vehicle while communicably connected to the control device 10B. One of the control device 10B and the management device 50 discriminates a communication specification of the other and switches the communication specification. In this configuration, consistency of the communication specification is attained between the control device 10B of the vehicle and the battery 20, so that disability of communication between the control device 10B and the battery 20 can be prevented.

Abstract: An aluminum alloy fin material includes an aluminum alloy containing 1.50 to 5.00 mass % Si with the balance of Al and inevitable impurities, and has the function of being bonded by heating with a single layer. Assuming that in a cross section along the thickness direction of the fin material, the equivalent circle diameter of a Si particle is represented by D, a distance from a surface layer to the center of the Si particle is represented by L, the thickness of the fin material is represented by t, and a length parallel to the surface layer is represented by W, all Si particles that are present in the range of the length W and satisfy D?L and L+D>0.04 t also satisfy 0???D2<0.08 tW. An aluminum alloy brazing sheet includes, as a skin material, the fin material that is clad on a core material including an aluminum alloy. A heat exchanger includes the fin material or the brazing sheet that is used in a fin.

Abstract: An energy storage device management method for deciding an SOC estimated value includes: preparing first and second SOC estimation methods for estimating an SOC; and employing a predetermined value as the SOC estimated value when a first SOC region and a second SOC region are different. V-SOC correlation between a voltage and the state of charge of the energy storage device is sectioned into a plurality of SOC regions. The first SOC region is the SOC region that the SOC estimated by the first SOC estimation method belongs to, and the second SOC region is the SOC region that the SOC estimated by the second SOC estimation method belongs to. The predetermined value is set to a value close to a boundary value on a side close to the first SOC region of boundary values sectioning the second SOC region, or a value between the boundary value and an intermediate value of the second SOC region.

Abstract: An electric storage device protection apparatus includes switches arranged between an electric device and an electric storage device and connected in parallel to each other, and each of which being configured to be switched to be in an open state and a closed state, a rectifier component connected in series to one of the switches between a pair of common connection points of the switches, and a controller configured to perform a process to make the one of the switches that is connected to the rectifier component to be in the closed state and make another one of the switches to be in the open state when determining that the electric storage device is in a state where a voltage of the electric storage device becomes higher than a reference range.

Abstract: A power supply protective device, when obtaining an open voltage when a second switch is brought into a closed state and a first switch is brought into an open state during discharging of a power supply, and obtaining a close voltage when the second switch is brought into the closed state and the first switch is brought into the closed state during discharging of the power supply, diagnoses the first switch as having a failure or not on the basis of the open voltage and the close voltage. When executing first a close instruction to the first switch and the second switch, if a voltage difference is less than a first threshold voltage, the first switch is determined to have no open failure, and/or when not less than a second threshold voltage, the second switch is determined to have no open failure.

Abstract: An electric energy management system includes: an energy storage device; a generator connected to the energy storage device; a load which is connected to the energy storage device and to the generator and is operated with a supply of an electric energy from the energy storage device and the generator; an electric energy control part configured to control the supply of electric energy to the load from the generator; a detection part configured to detect an abnormal state of the energy storage device; a current cutoff part configured to cut off an electric current between the energy storage device and the load; and a control part configured to issue an advance notice to cut off the electric current to the electric energy control part after the abnormal state is detected by the detection part and before the electric current is cut off by the current cutoff part. The electric energy control part is configured to control the supply of electric energy to the load from the generator based on the advance notice.

Abstract: An electric storage device protection apparatus includes switches arranged between an electric device and an electric storage device and connected in parallel to each other, and each of which being configured to be switched to be in an open state and a closed state, a rectifier component connected in series to one of the switches between a pair of common connection points of the switches, and a controller configured to perform a process to make the one of the switches that is connected to the rectifier component to be in the closed state and make another one of the switches to be in the open state when determining that the electric storage device is in a state where a voltage of the electric storage device becomes higher than a reference range.

Abstract: An energy storage device management method for deciding an SOC estimated value includes: preparing first and second SOC estimation methods for estimating an SOC; and employing a predetermined value as the SOC estimated value when a first SOC region and a second SOC region are different. V-SOC correlation between a voltage and the state of charge of the energy storage device is sectioned into a plurality of SOC regions. The first SOC region is the SOC region that the SOC estimated by the first SOC estimation method belongs to, and the second SOC region is the SOC region that the SOC estimated by the second SOC estimation method belongs to. The predetermined value is set to a value close to a boundary value on a side close to the first SOC region of boundary values sectioning the second SOC region, or a value between the boundary value and an intermediate value of the second SOC region.

Abstract: An electric storage device protection apparatus includes switches arranged between an electric device and an electric storage device and connected in parallel to each other, a rectifier component connected in series to one of the switches between a pair of common connection points of the switches, and a controller. The controller is configured to make the switch connected to the rectifier component to be in the open state when determining that a voltage of the electric storage device is within a reference range, and make the switch that is connected to the rectifier component to be in the closed state and make another one of the switches to be in the open state when determining that a voltage of the electric storage device becomes outside the reference range due to a current flowing in a reverse direction of the rectifier component.

Abstract: A condition estimation device includes a voltage measurement circuit, memory, and a controller. The voltage measurement circuit measures an open circuit voltage (OCV) of an electric storage device. The memory is configured to store first information on a correlation between a positive electrode potential and an electric storage capacity and second information on a correlation between a negative electrode potential and an electric storage capacity. The controller is configured to: measure an OCV under charge or discharge; calculate an electric storage capacity of the electric storage device having the OCV equal to a reference voltage; correct at least one of the first information and the second information such that a potential difference at the calculated capacity is equal to the reference voltage; and generate an OCV characteristic based on the first and the second information after the at least one of the first and the second information is corrected.

Abstract: An electric storage device protection apparatus includes switches arranged between an electric device and an electric storage device and connected in parallel to each other, a rectifier component connected in series to one of the switches between a pair of common connection points of the switches, and a controller. The controller is configured to make the switch connected to the rectifier component to be in the open state when determining that a voltage of the electric storage device is within a reference range, and make the switch that is connected to the rectifier component to be in the closed state and make another one of the switches to be in the open state when determining that a voltage of the electric storage device becomes outside the reference range due to a current flowing in a reverse direction of the rectifier component.

Abstract: A condition estimation device includes a voltage measurement circuit, memory, and a controller. The voltage measurement circuit measures an open circuit voltage (OCV) of an electric storage device. The memory is configured to store first information on a correlation between a positive electrode potential and an electric storage capacity and second information on a correlation between a negative electrode potential and an electric storage capacity. The controller is configured to: measure an OCV under charge or discharge; calculate an electric storage capacity of the electric storage device having the OCV equal to a reference voltage; correct at least one of the first information and the second information such that a potential difference at the calculated capacity is equal to the reference voltage; and generate an OCV characteristic based on the first and the second information after the at least one of the first and the second information is corrected.

Abstract: An assembled battery monitoring device that detects presence of disconnection in wiring pulled from an assembled battery in which a plurality of electric cells are connected in series. The electric cells are connected respectively in parallel to auxiliary current channels each having a setting resistance value, and the presence of the disconnection in the wiring is detected based on a detection voltage when the switching device for auxiliary current channel is turned to the closed state.

Abstract: An assembled battery monitoring device that detects presence of disconnection in wiring pulled from an assembled battery in which a plurality of electric cells are connected in series. The electric cells are connected respectively in parallel to auxiliary current channels each having a setting resistance value, and the presence of the disconnection in the wiring is detected based on a detection voltage when the switching device for auxiliary current channel is turned to the closed state.

Abstract: Voltage dividing circuits P1 to P3 are connected between the GND line connected to a battery B and the positive terminals of cells C1 to C3, respectively. Correcting discharging circuits D1 to D3 are connected between an output line on the side of the positive terminal of the battery B and the positive terminals of the cells C1 to C3, respectively. The amounts of discharges of the cells due to the correcting discharging circuits D1 to D3 are set to be equal to those of the cells due to the voltage dividing circuits P1 to P3, respectively, thereby leveling the capacities of the cells.