Unauthorized connection detecting device, unauthorized connection detecting system, and unauthorized connection detecting method

Abstract

An unauthorized connection detecting device, which detects whether or not a power storage device is an unauthorized power storage device, includes: a communications unit receiving first charge/discharge information in which first identification information and first connection information are associated each other, the first identification information identifying an encryption key of the power storage device used for mutual authentication between a charge/discharge device and the power storage device, and the first connection information being on the power storage device and obtained when the power storage device is connected to the charge/discharge device; and an unauthorization detecting unit detecting whether or not the power storage device is the unauthorized power storage device, by determining, using the first identification information and the first connection information, whether or not two or more power storage devices associated with a single first identification information item are present.

The invention claimed is:   
     
       1. An unauthorized connection detecting device which detects whether a power storage device that is connectable to a charge/discharge device for charging or discharging with power is an unauthorized power storage device, the unauthorized connection detecting device comprising:
 a non-transitory memory storing a program; and 
 
       a hardware processor that executes the program and causes the unauthorized connection detecting device to operate as:
 a communications unit that receives first charge/discharge information in which first identification information and first connection information are associated each other, the first identification information being information for identifying an encryption key of the power storage device used for mutual authentication between the charge/discharge device and the power storage device connectable to the charge/discharge device, and the first connection information being information regarding the power storage device and obtained when the power storage device is connected to the charge/discharge device, and 
 the communications unit also receives second charge/discharge information in which second identification information and second connection information are associated each other, the second identification information being information for identifying an encryption key of the charge/discharge device used for mutual authentication between the power storage device and the charge/discharge device connectable with the power storage device, and the second connection information being information regarding the charge/discharge device and obtained when the charge/discharge device is connected with the power storage device; and 
 an unauthorization detecting unit in communication with the communications unit that determines, using the first identification information and the first connection information included in the received first charge/discharge information, whether two or more power storage devices associated with a single first identification information item are present and detects that the power storage device connected to the charge/discharge device is the unauthorized power storage device when the two or more power storage devices associated with the single first identification information item are determined to be Present, and 
 the unauthorization detecting unit also determines, using the second identification information and the second connection information included in the received second charge/discharge information, whether two or more charge/discharge devices associated with a single second identification information item are present and detects that the charge/discharge device connected to the power storage device is the unauthorized charge/discharge device if the two or more charge/discharge devices associated with the single second identification information item are determined to be present, 
 wherein when it is the power storage device is unauthorized charging/discharging by the charge/discharge device is prevented, 
 the communications unit is configured to receive the first charge/discharge information in which the first identification information and the first connection information are associated each other, the first connection information including information indicating a time and a position when and where the power storage device was charged or discharged, and 
 the unauthorization detecting unit detects whether the power storage device connected to the charge/discharge device is the unauthorized power storage device, by determining, based on a relationship between times and positions included in a first connection information item associated with a single first identification information item, whether two or more power storage devices associated with the single first identification information item are present, the first connection information item being included in the first connection information, and the first connection information item and the single first identification information item being included in the received first charge/discharge information, and 
 wherein when the charge/discharge device is unauthorized charging/discharging by the charge/discharge device is prevented, 
 The communications unit and the unauthorization detecting unit are implanted by hardware. 
 
     
     
       2. The unauthorized connection detecting device according to  claim 1 , wherein in the first charge/discharge information the first identification information, time information, and position information are associated one another, and the time information indicates a time when the charge/discharge device charged or discharged the power storage device, and the position information indicates a position where the charge/discharge device was previously. 
     
     
       3. The unauthorized connection detecting device according to  claim 1 ,
 wherein the communications unit is configured to receive information via one of a communications network connected with a charge station for charging the power storage device when the power storage device is connected and a communications network connected to the charge/discharge device. 
 
     
     
       4. The unauthorized connection detecting device according to  claim 1 ,
 wherein the unauthorized connection detecting device is included in an unauthorized connection detecting system which detects whether a power storage device is an unauthorized power storage device, the unauthorized connection detecting system comprising: 
 a charge/discharge device which charges or discharges with power; and the unauthorized connection detecting device detects whether a power storage device that is connectable to the charge/discharge device is an unauthorized power storage device. 
 
     
     
       5. The unauthorized connection detecting device according to  claim 1 , wherein the unauthorized connection detecting device is included in an unauthorized connection detecting system which detects whether a charge/discharge device for charging or discharging with power is an unauthorized charge/discharge device, the unauthorized connection detecting system comprising:
 a power storage device; and 
 the unauthorized connection detecting device detects whether a charge/discharge device that is connectable with the power storage device and charges or discharges the power storage device is an unauthorized charge/discharge device. 
 
     
     
       6. An unauthorized connection detecting method employed by an unauthorized connection detecting device for detecting whether a power storage device that is connectable to a charge/discharge device for charging or discharging with power is an unauthorized power storage device, the unauthorized connection detecting method comprising:
 receiving by the unauthorized connection detecting device first charge/discharge information in which first identification information and first connection information are associated each other, the first identification information being information for identifying an encryption key of the power storage device used for mutual authentication between the charge/discharge device and the power storage device connectable to the charge/discharge device, and the first connection information being information regarding the power storage device and obtained when the power storage device is connected to the charge/discharge device, and 
 receiving second charge/discharge information in which second identification information and second connection information are associated each other, the second identification information being information for identifying an encryption key of the charge/discharge device used for mutual authentication between the power storage device and the charge/discharge device connectable with the power storage device, and the second connection information being information regarding the charge/discharge device and obtained when the charge/discharge device is connected with the power storage device; 
 determining, using the first identification information and the first connection information included in the received first charge/discharge information, whether two or more power storage devices associated with a single first identification information item are present and detects that the power storage device connected to the charge/discharge device is the unauthorized power storage device when the two or more power storage devices associated with the single first identification information item are determined to be present, and 
 determining, using the second identification information and the second connection information included in the received second charge/discharge information, whether two or more charge/discharge devices associated with a single second identification information item are present and detecting that the charge/discharge device connected to the power storage device is the unauthorized charge/discharge device if the two or more charge/discharge devices associated with the single second identification information item are determined to be present, 
 wherein when it is the power storage device is unauthorized charging/discharging by the charge/discharge device is prevented, 
 in the receiving the first charge/discharge information in which the first identification information and the first connection information are associated each other, the first connection information includes information indicating a time and a position when and where the power storage device was charged or discharged, and 
 in the detecting whether the power storage device connected to the charge/discharge device is the unauthorized power storage device it is determined, based on a relationship between times and positions included in a first connection information item associated with a single first identification information item, whether two or more power storage devices associated with the single first identification information item are present, the first connection information item being included in the first connection information, and the first connection information item and the single first identification information item being included in the received first charge/discharge information, and 
 wherein when the charge/discharge device is unauthorized charging/discharging by the charge/discharge device is prevented. 
 
     
     
       7. A non-transitory computer-readable recording medium having a program recorded thereon for causing a computer to execute an unauthorized connection detecting method employed by an unauthorized connection detecting device for detecting whether a power storage device that is connectable to a charge/discharge device for charging or discharging with power is an unauthorized power storage device, the unauthorized connection detecting method comprising:
 receiving by the unauthorized connection detecting device first charge/discharge information in which first identification information and first connection information are associated each other, the first identification information being information for identifying an encryption key of the power storage device used for mutual authentication between the charge/discharge device and the power storage device connectable to the charge/discharge device, and the first connection information being information regarding the power storage device and obtained when the power storage device is connected to the charge/discharge device, and 
 receiving second charge/discharge information in which second identification information and second connection information are associated each other, the second identification information being information for identifying an encryption key of the charge/discharge device used for mutual authentication between the power storage device and the charge/discharge device connectable with the power storage device, and the second connection information being information regarding the charge/discharge device and obtained when the charge/discharge device is connected with the power storage device; 
 determining, using the first identification information and the first connection information included in the received first charge/discharge information, whether two or more power storage devices associated with a single first identification information item are present and detects that the power storage device connected to the charge/discharge device is the unauthorized power storage device when the two or more power storage devices associated with the single first identification information item are determined to be present, and 
 determining, using the second identification information and the second connection information included in the received second charge/discharge information, whether two or more charge/discharge devices associated with a single second identification information item are present and detecting that the charge/discharge device connected to the power storage device is the unauthorized charge/discharge device if the two or more charge/discharge devices associated with the single second identification information item are determined to be present, 
 wherein when it is the power storage device is unauthorized charging/discharging by the charge/discharge device is prevented, 
 in the receiving the first charge/discharge information in which the first identification information and the first connection information are associated each other, the first connection information includes information indicating a time and a position when and where the power storage device was charged or discharged, and 
 in the detecting whether the power storage device connected to the charge/discharge device is the unauthorized power storage device it is determined, based on a relationship between times and positions included in a first connection information item associated with a single first identification information item, whether two or more power storage devices associated with the single first identification information item are present, the first connection information item being included in the first connection information, and the first connection information item and the single first identification information item being included in the received first charge/discharge information, and 
 wherein when the charge/discharge device is unauthorized charging/discharging by the charge/discharge device is prevented. 
 
     
     
       8. An integrated circuit which detects whether a power storage device that is connectable to a charge/discharge device for charging or discharging with power is an unauthorized power storage device, the integrated circuit comprising:
 a non-transitory memory storing a program; and 
 a hardware processor that executes the program and causes the unauthorized connection detecting device to operate as: 
 a communications unit that receives first charge/discharge information in which first identification information and first connection information are associated each other, the first identification information being information for identifying an encryption key of the power storage device used for mutual authentication between the charge/discharge device and the power storage device connectable to the charge/discharge device, and the first connection information being information regarding the power storage device and obtained when the power storage device is connected to the charge/discharge device, and 
 the communications unit also receives second charge/discharge information in which second identification information and second connection information are associated each other, the second identification information being information for identifying an encryption key of the charge/discharge device used for mutual authentication between the power storage device and the charge/discharge device connectable with the power storage device, and the second connection information being information regarding the charge/discharge device and obtained when the charge/discharge device is connected with the power storage device; and 
 an unauthorization detecting unit in communication with the communications unit that determines, using the first identification information and the first connection information included in the received first charge/discharge information, whether two or more power storage devices associated with a single first identification information item are present and detects that the power storage device connected to the charge/discharge device is the unauthorized power storage device when the two or more power storage devices associated with the single first identification information item are determined to be present, and 
 the unauthorization detecting unit also determines, using the second identification information and the second connection information included in the received second charge/discharge information, whether two or more charge/discharge devices associated with a single second identification information item are present and detects that the charge/discharge device connected to the power storage device is the unauthorized charge/discharge device if the two or more charge/discharge devices associated with the single second identification information item are determined to be present, 
 Wherein when it is the power storage device is unauthorized charging/discharging by the charge/discharge device is prevented, 
 the communications unit is configured to receive the first charge/discharge information in which the first identification information and the first connection information are associated each other, the first connection information including information indicating a time and a position when and where the power storage device was charged or discharged, and 
 the unauthorization detecting unit detects whether the power storage device connected to the charge/discharge device is the unauthorized power storage device, by determining, based on a relationship between times and positions included in a first connection information item associated with a single first identification information item, whether two or more power storage devices associated with the single first identification information item are present, the first connection information item being included in the first connection information, and the first connection information item and the single first identification information item being included in the received first charge/discharge information, and 
 wherein when the charge/discharge device is unauthorized charging/discharging by the charge/discharge device is prevented, 
 The communications unit and the unauthorization detecting unit are implanted by hardware.