Control device

Abstract

To provide a control device that can prevent a switch connecting an inlet and a battery in a DC charging circuit from being turned on during AC charging.SOLUTION: A control device 10 includes a PWC circuit 2 (first control circuit) that controls the on / off of a DCR 20 (switch) that connects an inlet 151 and a battery pack 152 (battery) in a DC charging circuit 100a, and an EV-ECU 4 (second control circuit) that controls the on / off of the DCR 20. Each of the PWC circuit 2 and the EV-ECU 4 determines whether AC charging or DC charging is to be performed, and operates to turn off the DCR 20 when it is determined that AC charging is to be performed.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present disclosure relates to a control device. [Background technology]

[0002] Japanese Patent Laid-Open Publication No. 2022-039337 (Patent Document 1) discloses a vehicle including an AC port for receiving AC power, a DC port for receiving DC power, and a battery. A charging relay is provided between each of the AC port and the battery and the DC port. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2022-039337 A Summary of the Invention [Problem to be solved by the invention]

[0004] Although not described in the above Patent Document 1, in conventional charging systems, there are cases where AC power and DC power can be received through a common port (inlet). In this case, in order to prevent the DC voltage of the battery from being applied to the AC power source, etc., during AC charging, it is necessary to turn off the charging relay (switch) provided in the DC charging circuit.

[0005] The present disclosure has been made to solve the above-mentioned problems, and its purpose is to provide a control device that can prevent a switch connecting an inlet and a battery in a DC charging circuit from being turned on during AC charging. [Means for solving the problem]

[0006] A control device according to one aspect of the present disclosure is a control device that controls charging in an electrical device that has a common inlet for an AC charging circuit and a DC charging circuit for charging a battery, and includes a first control circuit that controls on / off of a switch that connects the inlet and the battery in the DC charging circuit, and a second control circuit that controls on / off of the switch and is different from the first control circuit. Each of the first control circuit and the second control circuit determines whether AC charging or DC charging is to be performed, and operates to turn off the switch when it is determined that AC charging is to be performed.

[0007] In the control device according to one aspect of the present disclosure, as described above, each of the first control circuit and the second control circuit operates to turn off the switch when it is determined that AC charging is to be performed. As a result, even if one of the first control circuit and the second control circuit operates to turn on the switch during AC charging, the operation of the other of the first control circuit and the second control circuit can prevent the switch from being turned on during AC charging. As a result, the switch can be prevented from being turned on during AC charging, compared to when only one of the first control circuit and the second control circuit operates to turn off the switch during AC charging. Therefore, the switch connecting the inlet and the battery in the DC charging circuit can be prevented from being turned on during AC charging.

[0008] In the control device according to the above aspect, each of the first control circuit and the second control circuit preferably determines whether AC charging or DC charging is to be performed using first information based on an input voltage from an external power source that supplies charging power to the battery to an inlet and second information based on a signal from the external power source. With this configuration, the determination can be made using two pieces of information, the first information based on the input voltage from the external power source and the second information based on the signal from the external power source. As a result, the reliability of the determination can be improved compared to a case where the determination is made using only one of the two pieces of information.

[0009] In this case, preferably, the second information includes main information and sub information, and the first control circuit uses each of the main information and the sub information to determine whether AC charging or DC charging will be performed, and determines whether AC charging or DC charging will be performed based on a determination result using the first information, a determination result using the main information, and a determination result using the sub information. In this configuration, two determination results, the main information and the sub information, can be used, and therefore the reliability of the determination whether AC charging or DC charging will be performed can be improved compared to the case where only the main information is used.

[0010] The control device according to the above aspect preferably includes a first switch control circuit that outputs a control signal for controlling the on / off of the switch to the switch and receives operation commands from each of the first control circuit and the second control circuit. The switch is turned off when the control signal includes an off command. When it is determined that AC charging is to be performed, the second control circuit outputs an operation command to the first switch control circuit such that the control signal includes the off command. With this configuration, the switch can be easily turned off by the operation command from the second control circuit.

[0011] In the control device according to the above aspect, the first control circuit is preferably configured to output a control signal for controlling the on / off of the switch to the switch. The switch is turned off when the control signal includes an off command. The first control circuit determines whether AC charging or DC charging is to be performed using third information based on an input voltage from an external power source that supplies charging power to the battery to the inlet and fourth information based on a signal from the external power source, and operates so that the control signal includes an off command when it is determined that AC charging is to be performed. With this configuration, it is possible to cause the first control circuit that outputs a control signal that controls the on / off of the switch to determine whether AC charging or DC charging is to be performed. As a result, unlike a case in which a circuit other than the circuit that outputs the control signal that controls the on / off of the switch makes the above determination, it is not necessary to transmit the determination result to the above circuit (the circuit that outputs the control signal). As a result, it is possible to suppress delays in driving the switch due to the time required to transmit the determination result (signal). This makes it possible to further suppress the switch from being turned on during AC charging. Effect of the Invention

[0012] According to the present disclosure, it is possible to prevent a switch connecting an inlet and a battery in a DC charging circuit from being turned on during AC charging. [Brief description of the drawings]

[0013] [Figure 1] 1 is a diagram showing the configuration of a charging system for an electric vehicle according to a first embodiment. [Diagram 2] 1 is a diagram showing the configuration of a charging circuit for an electric vehicle according to a first embodiment. [Diagram 3] FIG. 2 is a diagram showing the configuration of a drive circuit of an OBC according to the first embodiment. [Figure 4] 4 is a diagram showing a truth table of an AND circuit included in the drive circuit of the OBC according to the first embodiment. FIG. [Diagram 5] FIG. 4 is a sequence diagram showing control in the control device according to the first embodiment. [Figure 6]FIG. 11 is a diagram showing the configuration of a charging circuit for an electric vehicle according to a second embodiment. [Figure 7] FIG. 11 is a sequence diagram showing control in a control device according to a second embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings. In the drawings, the same or corresponding parts are designated by the same reference characters and the description thereof will not be repeated.

[0015] [First embodiment] <Charging system configuration> 1 is a diagram showing a charging system for charging an electric vehicle 150 including a control device 10 according to a first embodiment. The system includes the electric vehicle 150, an EVSE (Electric Vehicle Supply Equipment) 300, and a power system PG. The electric vehicle 150 and the power system PG are examples of an "electrical device" and an "external power source", respectively, in the present disclosure.

[0016] The electric vehicle 150 includes the charging circuit 100, an inlet 151, and a battery pack 152. The battery pack 152 is an example of the "battery" in the present disclosure.

[0017] The battery pack 152 stores electric power for driving the electric vehicle 150. Charging power (AC power or DC power) from an external power source such as a power system PG is supplied to the battery pack 152. The charging power from the power system PG is supplied to the battery pack 152 through the EVSE 300.

[0018] EVSE 300 is provided with a charging cable 320 provided with a charging connector 310. When charging connector 310 is connected to inlet 151, electric vehicle 150 is electrically connected to EVSE 300 through charging cable 320. As a result, charging power from power system PG is supplied to battery pack 152 through EVSE 300 (charging cable 320).

[0019] Charging power input from the power system PG to the inlet 151 is supplied to the battery pack 152 through the charging circuit 100. The charging circuit 100 includes a control device 10. The control device 10 controls charging to the battery pack 152.

[0020] 2 is a diagram showing a configuration of the charging circuit 100. The charging circuit 100 includes a control device 10, a direct current relay (DCR) 20, a system main relay (SMR) 30, a bypass path 40, and a voltage sensor 50. The DCR 20 is an example of the "switch" of the present disclosure.

[0021] The control device 10 includes a High Level Communication (HLC) circuit 1, a Pulse Width Controller (PWC) circuit 2, an On Board Charger (OBC) 3, and an EV-ECU (Electronic Control Unit) 4. The PWC circuit 2 is an example of a "first control circuit" in the present disclosure. The OBC 3 and the EV-ECU 4 are examples of a "first switch control circuit" and a "second control circuit" in the present disclosure, respectively.

[0022] The EV-ECU 4 is a circuit different from (provided separately from) the PWC circuit 2. The control device 10 will be described in detail later.

[0023] The DCR 20 is provided in a DC charging circuit 100a (see the solid arrow (thick line) in FIG. 2) for charging the battery pack 152. The DCR 20 connects the inlet 151 and the battery pack 152 in the DC charging circuit 100a. Specifically, the DCR 20 is provided between the terminal portion 41 on the inlet 151 side of the bypass path 40 and the SMR 30. The DC charging circuit 100a is a circuit in which current flows in the following order: inlet 151 - DCR 20 - SMR 30 - battery pack 152. The DCR 20 is a relay that is controlled so as to be turned on during DC charging and turned off during AC charging.

[0024] The SMR 30 is provided in each of the AC charging circuit 100b (see the dashed arrow (thick line) in FIG. 2) and the DC charging circuit 100a for charging the battery pack 152. The SMR 30 connects the inlet 151 and the battery pack 152. Specifically, the SMR 30 is provided between the battery pack 152 and the end 42 of the bypass path 40 on the battery pack 152 side. The AC charging circuit 100b is a circuit in which a current flows in the order of the inlet 151-OBC3-SMR30-battery pack 152. The SMR 30 is a relay that is turned on during both DC charging and AC charging. The bypass path 40 is included in the AC charging circuit 100b. The bypass path 40 bypasses the DCR 20.

[0025] As can be seen from the above description, in electric vehicle 150, inlet 151 is an inlet common to AC charging circuit 100b and DC charging circuit 100a.

[0026] The voltage sensor 50 is provided between the inlet 151 and the DCR 20. Specifically, the voltage sensor 50 detects the voltage between the inlet 151 and the termination unit 41. The voltage sensor 50 detects the input voltage from the power system PG (EVSE 300) to the inlet 151. Information on the detection value by the voltage sensor 50 is transmitted to the OBC 3. The OBC 3 transmits the acquired information on the detection value of the voltage sensor 50 to each of the PWC circuit 2 and the EV-ECU 4 by communication. Note that in the first embodiment, the information on the detection value by the voltage sensor 50 is an example of the "first information" of the present disclosure.

[0027] The HLC circuit 1 acquires information about the power system PG (hereinafter referred to as system information) based on a signal from the power system PG input to the inlet 151. The system information may include, for example, an upper limit value, a lower limit value, a rated value, and an AC frequency of the charging voltage of the power system PG. The HLC circuit 1 transmits the acquired system information to each of the PWC circuit 2 and the EV-ECU 4. Note that in the first embodiment, the system information is an example of "second information" in the present disclosure.

[0028] The PWC circuit 2 uses the acquired system information to determine whether AC charging or DC charging will be performed. Here, the system information includes main information and monitoring information. The monitoring information includes information different from the main information. The PWC circuit 2 uses each of the main information and the monitoring information to determine whether AC charging or DC charging will be performed. The determination result by the PWC circuit 2 based on the monitoring information is transmitted to the EV-ECU 4. The monitoring information is an example of "secondary information" in the present disclosure.

[0029] Each of the PWC circuit 2 and the EV-ECU 4 controls the on / off of the DCR 20. Each of the PWC circuit 2 and the EV-ECU 4 determines whether AC charging or DC charging is to be performed. The EV-ECU 4 also controls the on / off of the SMR 30.

[0030] 3 is a diagram showing a configuration of a portion of the drive circuit 3a included in the OBC 3. The drive circuit 3a includes an AND circuit 3b. The AND circuit 3b outputs a control signal 3c for controlling the on / off of the DCR 20 to the DCR 20. Note that a wiring 3d inside the drive circuit 3a and a wiring 5 extending from the EV-ECU 4 are input to the AND circuit 3b. Note that the wiring 3d, the wiring 5, and the control signal 3c each transmit a digital signal with a logical value of "0" or "1."

[0031] 4 is a diagram showing the relationship between the wiring 3d and wiring 5 and the control signal 3c and DCR 20. When the signals on the wiring 3d and wiring 5 are H signals (signals with a logical value of "1"), the control signal 3c becomes an H signal and the DCR 20 is turned on. When the signals on at least one of the wirings 3d and wiring 5 are L signals (signals with a logical value of "0"), the control signal 3c becomes an L signal and the DCR 20 is turned off. Note that the control signal 3c becoming an L signal is an example of "the control signal includes an OFF command" in the present disclosure.

[0032] Here, in order to prevent the DC voltage of the battery from being applied to an external power source (power system PG in this embodiment), it is necessary to turn off the charging relay provided in the DC charging circuit during AC charging.

[0033] Therefore, in this embodiment, when it is determined that AC charging is to be performed, each of the PWC circuit 2 and the EV-ECU 4 operates to turn off the DCR 20. This ensures that the DCR 20 is turned off during AC charging by both the PWC circuit 2 and the EV-ECU 4. This will be described in detail below with reference to FIG. 3 again.

[0034] The PWC circuit 2 outputs an operation command to the OBC 3. Specifically, when the PWC circuit 2 determines that AC charging is to be performed, it outputs an operation command to the OBC 3 to set the signal on the line 3d to an L signal. On the other hand, when the PWC circuit 2 determines that DC charging is to be performed, it outputs an operation command to the OBC 3 to set the signal on the line 3d to an H signal.

[0035] When the EV-ECU 4 determines that AC charging is to be performed, it sets the signal on the wiring 5 to an L signal. When the EV-ECU 4 determines that DC charging is to be performed, it sets the signal on the wiring 5 to an H signal. Note that the wiring 5 being set to an H signal or an L signal is an example of an "operation command from the second control circuit" of the present disclosure.

[0036] <Control device sequence> Fig. 5 is a sequence diagram showing the control by the HLC circuit 1, the PWC circuit 2, the OBC 3, and the EV-ECU 4. The sequence shown in Fig. 5 may be executed at predetermined intervals (for example, every 10 minutes).

[0037] In step S1, the HLC circuit 1 acquires the above system information (main information+monitoring information). The above system information is input to the HLC circuit 1 through the inlet 151 (see FIG. 2).

[0038] In step S2, the HLC circuit 1 transmits the system information (main information+monitoring information) acquired in step S1 to each of the PWC circuit 2 and the EV-ECU 4. Note that the main information does not necessarily have to be transmitted to the EV-ECU 4.

[0039] In step S11, the OBC 3 acquires information on the voltage value detected by the voltage sensor 50 (hereinafter, referred to as voltage value information).

[0040] In step S12, the OBC 3 transmits the voltage value information acquired in step S11 to each of the PWC circuit 2 and the EV-ECU 4.

[0041] In step S21, the PWC circuit 2 uses the system information (main information) received from the HLC circuit 1 to determine whether AC charging or DC charging is to be performed (charging mode).

[0042] In step S21a, the PWC circuit 2 transmits to the EV-ECU 4 the result of the determination in step S21.

[0043] In step S22, the PWC circuit 2 judges whether the charging mode judgment results using each of the system information (monitoring information), the voltage value information, and the system information (main information) are the same. If the charging mode judged in the PWC circuit 2 based on the monitoring information, the charging mode judged in the PWC circuit 2 based on the voltage value information, and the charging mode judged in the PWC circuit 2 based on the main information (judgment results of S21) are the same (Yes in S22), the process proceeds to step S23. If the above three judgment results (judged charging modes) are not the same (No in S22), the process proceeds to step S24. Each of the monitoring information and the voltage value information is information for confirming (monitoring) that the main information is correct.

[0044] In step S23, the PWC circuit 2 determines whether the charging mode indicated in step S22 (the charging mode determined based on the above information) is AC charging. If it is AC charging (Yes in S23), it is determined that AC charging is to be performed, and the process proceeds to step S24. If it is not AC charging (No in S23), it is determined that DC charging is to be performed, and the process proceeds to step S25.

[0045] In step S24, the PWC circuit 2 transmits an operation command to the OBC 3 so as to set the wiring 3d of the drive circuit 3a of the OBC 3 to an L signal. After that, the process of the PWC circuit 2 ends.

[0046] In step S25, the PWC circuit 2 transmits an operation command to the OBC 3 so that the line 3d becomes an H signal. After that, the process of the PWC circuit 2 ends.

[0047] In step S13, the OBC3 fixes the wiring 3d to an H signal or an L signal based on the operation command of step S24 or S25. Specifically, when the OBC3 receives the operation command of step S24, it fixes the wiring 3d to an L signal. When the OBC3 receives the operation command of step S25, it fixes the wiring 3d to an H signal. Next, the process proceeds to step S14.

[0048] In step S31, the EV-ECU 4 determines whether AC charging or DC charging will be performed, based on the determination result using the grid information (monitoring information), the determination result using the voltage value information, and the determination result in step S21. If the charging mode determined in the EV-ECU 4 based on the monitoring information, the charging mode determined in the EV-ECU 4 based on the voltage value information, and the charging mode determined in step S21 are the same (Yes in S31), the process proceeds to step S32. If the above three determination results (determined charging modes) are not the same (No in S31), the process proceeds to step S35.

[0049] In step S32, the EV-ECU 4 determines whether the charging mode determined in step S31 based on each piece of information is AC charging. If it is AC charging (Yes in S32), it is determined that AC charging will be performed, and the process proceeds to step S33. If it is not AC charging (No in S32), it is determined that DC charging will be performed, and the process proceeds to step S34.

[0050] In step S33, the EV-ECU 4 fixes the signal on the line 5 input to the AND circuit 3b of the OBC 3 to an L signal. In step S34, the EV-ECU 4 fixes the signal on the line 5 to an H signal.

[0051] In step S35, the EV-ECU 4 determines whether or not a request to set the line 5 to an H signal has been received from the PWC circuit 2. If the request has been received (Yes in S35), the process proceeds to step S36. If the request has not been received (No in S35), the process proceeds to step S33. Note that the process of step S35 does not have to be executed.

[0052] In step S36, the EV-ECU 4 rejects the request received in step S35, and then the process of the EV-ECU 4 ends.

[0053] In step S14, the OBC 3 turns the DCR 20 on or off by the control signal 3c via the line 3d and the line 5.

[0054] As described above, in the first embodiment, each of the PWC circuit 2 and the EV-ECU 4 determines whether AC charging or DC charging will be performed, and when it is determined that AC charging will be performed, operates to turn off the DCR 20. As a result, even if the determination of one of the PWC circuit 2 and the EV-ECU 4 is abnormal, the DCR 20 can be prevented from being turned on during AC charging based on the determination of the other of the PWC circuit 2 and the EV-ECU 4.

[0055] In the first embodiment, each of the PWC circuit 2 and the EV-ECU 4 uses the voltage value information and the grid information to determine whether AC charging or DC charging will be performed. This makes it possible to prevent an erroneous determination of whether AC charging or DC charging will be performed based on the other of the voltage value information and the grid information, even if one of the voltage value information and the grid information is abnormal.

[0056] [Second embodiment] Next, a control device 110 according to a second embodiment will be described with reference to Figures 6 and 7. In the second embodiment, unlike the first embodiment in which the PWC circuit 2 determines whether AC charging or DC charging is to be performed, the above determination is made in the OBC 13. The same components as those in the first embodiment are given the same reference numerals and will not be described repeatedly.

[0057] <System configuration> 6 is a diagram showing a charging circuit 200 including a control device 110 according to the second embodiment. The charging circuit 200 differs from the charging circuit 100 of the first embodiment in that the charging circuit 200 includes a control device 110 instead of the control device 10.

[0058] The control device 110 includes an HLC circuit 11, a PWC circuit 12, an OBC 13, and an EV-ECU 4. The OBC 13 is an example of a "first control circuit" in the present disclosure.

[0059] The OBC 13 has a microcontroller (Micro Controller Unit) 13a and a microcontroller 13b. The microcontroller 13a uses information (voltage value information) of the input voltage from the power system PG to the inlet 151 to determine whether AC charging or DC charging will be performed. The microcontroller 13b uses system information (main information) to determine whether AC charging or DC charging will be performed. In the second embodiment, the voltage value information is an example of the "third information" of the present disclosure. In the second embodiment, the system information (main information) is an example of the "fourth information" of the present disclosure.

[0060] <Control device sequence> Fig. 7 is a sequence diagram showing the control by the HLC circuit 11, the PWC circuit 12, the OBC 13, and the EV-ECU 4. The sequence shown in Fig. 7 may be executed at predetermined intervals (for example, every 10 minutes). Note that steps that are the same as those in the first embodiment are given the same reference numerals and will not be described repeatedly.

[0061] In step S52, the HLC circuit 11 transmits the system information (main information+monitoring information) acquired in step S1 to each of the PWC circuit 12, the OBC 13, and the EV-ECU 4. Note that the main information does not have to be transmitted to each of the OBC 13 and the EV-ECU 4. The monitoring information does not have to be transmitted to the PWC circuit 12.

[0062] In step S21b, the PWC circuit 12 transmits the determination result of step S21 to each of the OBC 13 and the EV-ECU 4.

[0063] In step S42, the OBC 13 transmits to the EV-ECU 4 the voltage value information acquired in step S11.

[0064] In step S43, the OBC 13 uses the voltage value information, the system information (monitoring information), and the charging mode determination result by the PWC circuit 12 to determine whether AC charging or DC charging is to be performed. Specifically, the OBC 13 uses the determination result by the microcomputer 13a (determination result based on the voltage value information), the determination result by the microcomputer 13b (determination result based on the monitoring information of the system information), and the determination result by the PWC circuit 12 to determine the charging mode. If the charging mode determined by the OBC 13 based on the voltage value information, the charging mode determined by the OBC 13 based on the monitoring information of the system information, and the charging mode indicated by the determination result of step S21 are the same (Yes in S43), the process proceeds to step S44. If the charging modes indicated by the above three determination results are not the same (No in S43), the process proceeds to step S45.

[0065] In step S44, the OBC 13 determines whether the charging mode indicated in step S43 (the charging mode determined based on each piece of information) is AC charging. If it is AC charging (Yes in S44), it is determined that AC charging is performed, and the process proceeds to step S45. If it is not AC charging (No in S44), it is determined that DC charging is performed, and the process proceeds to step S46.

[0066] In step S45, the OBC 13 controls the driving circuit 3a so that the wiring 3d (see FIG. 3) of the driving circuit 3a of the OBC 13 becomes an L signal. Next, the process proceeds to step S14.

[0067] In step S46, the OBC 13 controls the driving circuit 3a so that the wiring 3d becomes an H signal. Next, the process proceeds to step S14.

[0068] The other configurations and controls are the same as those in the first embodiment, so that a repeated description will not be given.

[0069] In the above first and second embodiments, an example has been described in which two mutually different circuits each determine whether AC charging or DC charging is to be performed, but the present disclosure is not limited to this. Three or more mutually different circuits each may determine whether AC charging or DC charging is to be performed.

[0070] In the first and second embodiments, the voltage value information and the grid information are used to determine whether AC charging or DC charging is to be performed, but the present disclosure is not limited to this. The determination may be made using information other than the above two types of information (for example, information on a current value, temperature information, and charging speed, etc.).

[0071] In the first and second embodiments, the AND circuit 3b is provided in the driving circuit 3a of the OBC3 (13), but the present disclosure is not limited to this. The configuration of the driving circuit 3a is not limited to the above example. For example, an OR circuit or the like may output a control signal that controls the DCR 20.

[0072] In the first embodiment, an example has been shown in which the PWC circuit 2 determines whether AC charging or DC charging is to be performed using the voltage value information, the system information (monitoring information), and the system information (main information), but the present disclosure is not limited to this. The PWC circuit may make the above determination using one or two of the above three pieces of information. The PWC circuit may also make the above determination using four or more pieces of information obtained by adding other information to the above three pieces of information. Note that the determination in each of the OBC 13 in the second embodiment and the EV-ECU 4 in the first and second embodiments may be similar to the above.

[0073] In the above first and second embodiments, an example has been described in which the charging circuit 100 (200) is electrically connected to the power system PG, but the present disclosure is not limited to this. The charging circuit 100 (200) may be electrically connected to, for example, a home appliance. In this case, the home appliance is an example of an "external power source" in the present disclosure.

[0074] In the above first and second embodiments, an example has been described in which the control device 10 (110) is mounted on the electric vehicle 150, but the present disclosure is not limited to this. The control device may be mounted on an electric device other than an electric vehicle (for example, a stationary power storage device).

[0075] In the above first and second embodiments, the voltage value information is transmitted to the EV-ECU 4 and the PWC circuit 2 via the OBC 3 (13), but the present disclosure is not limited to this. For example, the voltage value information may be transmitted from the voltage sensor 50 to each of the EV-ECU 4 and the PWC circuit 2.

[0076] The controls of the above embodiment and the above various modified examples may be executed in combination with each other.

[0077] The embodiments disclosed herein should be considered to be illustrative and not restrictive in all respects. The scope of the present disclosure is defined by the claims, not by the description of the embodiments described above, and is intended to include all modifications within the meaning and scope of the claims. [Explanation of symbols]

[0078] 2 PWC circuit (first control circuit), 3 OBC (first switch control circuit), 3c control signal, 4 EV-ECU (second control circuit), 10, 110 control device, 13 OBC (first control circuit), 20 DCR (switch), 100a DC charging circuit, 100b AC charging circuit, 150 electric vehicle (electrical equipment), 151 inlet, 152 battery pack (battery), PG power system (external power source).

Claims

1. A control device for controlling charging in an electrical device having a common inlet for an AC charging circuit and a DC charging circuit for charging a battery, comprising: a first control circuit that controls on / off of a switch that connects the inlet and the battery in the DC charging circuit; a second control circuit that controls on / off of the switch and is different from the first control circuit; Each of the first control circuit and the second control circuit is Determining whether AC charging or DC charging is to be performed; The control device operates to turn off the switch when it is determined that AC charging is to be performed.

2. 2. The control device according to claim 1, wherein each of the first control circuit and the second control circuit determines whether AC charging or DC charging will be performed using first information based on an input voltage to the inlet from an external power source that supplies charging power to the battery, and second information based on a signal from the external power source.

3. The second information includes main information and sub information, The first control circuit is determining whether AC charging or DC charging is to be performed using each of the main information and the sub information; The control device according to claim 2 , which determines whether AC charging or DC charging will be performed based on a determination result using the first information, a determination result using the main information, and a determination result using the sub information.

4. a first switch control circuit that outputs a control signal to the switch to control on / off of the switch and receives operation commands from the first control circuit and the second control circuit; The switch is turned off when the control signal includes an off command, The control device according to any one of claims 1 to 3, wherein when the second control circuit determines that AC charging is to be performed, the second control circuit outputs the operation command to the first switch control circuit so that the control signal includes the off command.

5. the first control circuit is configured to output a control signal to the switch for controlling on / off of the switch; The switch is turned off when the control signal includes an off command, The first control circuit is determining whether AC charging or DC charging is to be performed using third information based on an input voltage to the inlet from an external power source that supplies charging power to the battery and fourth information based on a signal from the external power source; The control device according to any one of claims 1 to 3, wherein when it is determined that AC charging is to be performed, the control signal is operated so that the OFF command is included in the control signal.

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