Status detection system and connection cable

Abstract

To provide a state detection system that can supply a sufficient amount of electric power from a power storage vehicle to an electric vehicle while the electric vehicle is in operation.SOLUTION: In a connection cable 1 of a state detection system 100, a controller 1b that determines the connection state of the connection cable 1 is provided. A state detection system 100 uses a battery controller 12 (first detection unit) of an electric vehicle 10 to detect the electrical connection state between the electric vehicle 10 and the connection cable 1. The state detection system 100 also uses a battery controller 22 (second detection unit) of the battery trailer 20 to detect the electrical connection state between the battery trailer 20 and the connection cable 1. The controller 1b determines the connection state of the connection cable 1 on the basis of the detection results of the battery controller 12 and the battery controller 22.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to a condition detection system and a connection cable. [Background technology]

[0002] Japanese Patent Laid-Open Publication No. 2013-246701 (Patent Document 1) discloses a battery trailer system including a server, an electric vehicle, and a battery trailer detachably connected to the electric vehicle. The battery trailer transmits connection status information, including information on connection errors with the electric vehicle, to the server. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2013-246701 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, while Patent Document 1 discloses that an electric vehicle is supplied with power from only one battery trailer, it does not take into consideration the fact that power is supplied from multiple battery trailers to an electric vehicle in operation. For this reason, it is considered that an electric vehicle may not be supplied with a sufficient amount of power from the battery trailer and may stop during operation due to a lack of power. Therefore, it is desired to supply a sufficient amount of power from the battery trailer to the electric vehicle (electrically-driven vehicle) while the electric vehicle is in operation.

[0005] The present disclosure has been made to solve the above-mentioned problems, and its purpose is to provide a status detection system and a connection cable that are capable of supplying a sufficient amount of power from an energy storage vehicle to an electric vehicle while the electric vehicle is in operation. [Means for solving the problem]

[0006] A status detection system according to a first aspect of the present disclosure is a status detection system that detects a connection status between an energy storage vehicle equipped with a power storage unit, an electric vehicle, and a connection cable, and includes a connection cable capable of electrically connecting the electric vehicle and the energy storage vehicle and also electrically connecting the energy storage vehicles to each other, a determination unit that determines the connection status of the connection cable, a first detection unit that detects the electrical connection status between the electric vehicle and the connection cable, and a second detection unit that detects the electrical connection status between the energy storage vehicle and the connection cable, and the determination unit determines the connection status of the connection cable based on the detection results of the first detection unit and the second detection unit.

[0007] As described above, the state detection system according to the first aspect of the present disclosure includes a first detection unit that detects an electrical connection state between the electric vehicle and the connection cable, and a second detection unit that detects an electrical connection state between the power storage vehicle and the connection cable. The determination unit determines the connection state of the connection cable based on the detection results of the first detection unit and the second detection unit. This allows the determination unit to determine the connection state of the connection cable connecting the electric vehicle and the power storage vehicle based on the detection results of the first detection unit and the second detection unit. The determination unit can also determine the connection state of the connection cable connecting the power storage vehicles based on the detection result of the second detection unit. As a result, in a state in which the electric vehicle and the first power storage vehicle are connected by the connection cable and the first power storage vehicle and the second power storage vehicle are connected by the connection cable, power can be more reliably supplied to the electric vehicle from each of the first and second power storage vehicles via the connection cable. This allows a sufficient amount of power to be supplied to the electric vehicle during operation of the electric vehicle.

[0008] In the state detection system according to the first aspect, preferably, the electric vehicle includes an electric vehicle side terminal, the power storage vehicle includes terminals on both sides of the storage electric vehicle, the connection cable includes a cable portion and a pair of connectors provided on both ends of the cable portion, each of the pair of connectors having a first terminal connected to the electric vehicle side terminal and a second terminal connected to the terminals on both sides of the storage electric vehicle, the first detection unit detects the electrical connection state between the electric vehicle and the connection cable based on the electrical state of the first terminal, and the second detection unit detects the electrical connection state between the power storage vehicle and the connection cable based on the electrical state of the second terminal. Thus, the first detection unit can easily detect the electrical connection state between the electric vehicle and the connection cable by detecting the electrical state of the first terminal. Also, the second detection unit can easily detect the electrical connection state between the power storage vehicle and the connection cable by detecting the electrical state of the second terminal.

[0009] In the state detection system according to the first aspect, preferably, the connection cable is capable of electrically connecting the power storage vehicle and the external charger, and further includes a third detection unit that detects an electrical connection state between the connection cable and the external charger, and the determination unit determines the connection state of the connection cable based on a detection result of the third detection unit. With this configuration, the determination unit can determine the connection state of the connection cable that connects the power storage vehicle and the external charger based on a detection result of the third detection unit. As a result, power can be more reliably supplied from the external charger to the power storage vehicle via the connection cable.

[0010] In this case, preferably, the external charger includes a charger-side terminal, the connection cable includes a cable portion and a pair of connectors provided at both ends of the cable portion, each of the pair of connectors has a third terminal that connects to the charger-side terminal, and the third detection unit detects the electrical connection state between the external charger and the connection cable based on the electrical state of the third terminal. With this configuration, the third detection unit can easily detect the electrical connection state between the external charger and the connection cable by detecting the electrical state of the third terminal.

[0011] A connection cable according to a second aspect of the present disclosure is a connection cable capable of electrically connecting an energy storage vehicle equipped with a power storage unit to an electric vehicle, and also capable of electrically connecting energy storage vehicles to each other, and is equipped with a first detection unit that detects the electrical connection state between the electric vehicle and the connection cable, and a second detection unit that detects the electrical connection state between the energy storage vehicle and the connection cable.

[0012] As described above, the connection cable according to the second aspect of the present disclosure includes a first detection unit that detects an electrical connection state between the electric vehicle and the connection cable, and a second detection unit that detects an electrical connection state between the power storage vehicle and the connection cable. This makes it possible to more reliably transfer power between the electric vehicle and the first power storage vehicle via the connection cable based on the detection results of the first detection unit and the second detection unit. Also, it makes it possible to more reliably transfer power between the first power storage vehicle and the second power storage vehicle via the connection cable based on the detection result of the second detection unit. As a result, in a state in which the electric vehicle and the first power storage vehicle are connected by the connection cable and the first power storage vehicle and the second power storage vehicle are connected by the connection cable, it is possible to more reliably supply power from each of the first and second power storage vehicles to the electric vehicle via the connection cable. This makes it possible to provide a connection cable that can supply a sufficient amount of power to the electric vehicle while the electric vehicle is in operation.

[0013] In the connection cable according to the second aspect, the connection cable is preferably capable of electrically connecting the power storage vehicle and the external charger, and includes a third detection unit that detects an electrical connection state between the external charger and the connection cable, thereby making it possible to more reliably transmit and receive power between the power storage vehicle and the external charger via the connection cable based on a detection result of the third detection unit. Effect of the Invention

[0014] According to the present disclosure, a sufficient amount of power can be supplied from the power storage vehicle to the electric vehicle while the electric vehicle is in operation. [Brief description of the drawings]

[0015] [Figure 1] FIG. 1 is a diagram illustrating an example of a configuration of a state detection system according to an embodiment. [Diagram 2] Fig. 2(A) is a diagram showing a state in which an external charger and a battery trailer are connected by a connection cable, and Fig. 2(B) is a diagram showing a state in which an external charger and an electric vehicle are connected by a connection cable. [Diagram 3] Fig. 3(A) is a diagram showing the terminal structure of a connector, Fig. 3(B) is a diagram showing the terminal structure of an electric vehicle, Fig. 3(C) is a diagram showing the terminal structure of a battery trailer, and Fig. 3(D) is a diagram showing the terminal structure of an external charger. [Figure 4] 4A and 4B are diagrams illustrating the relationship between the state of each terminal of the connector and the state (connection state) of the connector. [Diagram 5] FIG. 11 is a diagram illustrating an example of a configuration of a state detection system according to a modified example of an embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] 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.

[0017] Fig. 1 is a diagram showing a configuration of a state detection system 100 according to this embodiment. Fig. 1 shows, as an example, the state detection system 100 in a state in which one electric vehicle 10 and two battery trailers 20 are connected.

[0018] As shown in FIG. 1, the status detection system 100 includes multiple connection cables 1 (two in FIG. 1). One connection cable 1 electrically and physically connects the electric vehicle 10 and the battery trailer 20. The other connection cable 1 electrically and physically connects the two battery trailers 20. In FIG. 1 and the following description, the rear battery trailer 20 will be referred to as battery trailer 20A as appropriate for the sake of explanation. The battery trailer 20 is an example of an "electricity storage vehicle" in this disclosure.

[0019] The electric vehicle 10 is a vehicle for loading and unloading. The electric vehicle 10 includes a battery 11, a battery controller 12, and a terminal unit 13 (see FIG. 3(B)). The electric vehicle 10 performs operations such as running and loading and unloading using power from the battery 11. The battery controller 12 manages the power (voltage and current) state and temperature of the battery 11. A connector 2 (described later) of a connection cable 1 is connected to the terminal unit 13. The battery controller 12 is an example of a "first detection unit" in the present disclosure.

[0020] The battery trailer 20 includes a traction battery pack 21, a battery controller 22, and a terminal unit 23 (see FIG. 3(C)). The battery trailer 20 supplies power from the traction battery pack 21 to the electric vehicle 10 via a connection cable 1 while the electric vehicle 10 is performing loading and unloading operations. The battery controller 22 manages the power (voltage and current) state, temperature, etc. of the traction battery pack 21. The traction battery pack 21 and the battery controller 22 are examples of the "power storage unit" and "second detection unit" of this disclosure, respectively.

[0021] A connector 2 (described later) of the connection cable 1 is connected to the terminal portion 23. The terminal portion 23 is provided on each of the front and rear sides of the battery trailer 20. Therefore, the battery trailer 20 is configured so that the connection cable 1 can be connected to each of the front and rear sides.

[0022] The battery trailer 20A's driving battery pack 21A and battery controller 22A have the same configuration as the driving battery pack 21 and battery controller 22, respectively. The battery trailer 20A supplies power from the driving battery pack 21A to the electric vehicle 10 via the connection cable 1 during loading and unloading work by the electric vehicle 10. Although not shown in the figure, the battery trailer 20A has a terminal section having the same configuration as the terminal section 23 of the battery trailer 20.

[0023] The capacity of the battery pack 21 for driving of the battery trailer 20 is larger than the capacity of the battery 11 of the electric vehicle 10. This makes it possible to easily extend (e.g., double or more) the operating time of the electric vehicle 10 by using the power of the battery pack 21 for driving.

[0024] The connection cable 1 includes a cable portion 1a and a pair of connectors 2 provided on both ends of the cable portion 1a. A control controller 1b is provided on the cable portion 1a. Furthermore, each of the pair of connectors 2 is provided with a sensor 3 that detects the current value or voltage value of each terminal (2a to 2e) of the connector 2. The sensor 3 is an example of a "first detection unit," a "second detection unit," and a "third detection unit" in the present disclosure. Furthermore, the control controller 1b is an example of a "determination unit" in the present disclosure.

[0025] The connection cable 1 is electrically connected to the electric vehicle 10 by connecting the connector 2 to a terminal portion 13 (see FIG. 3(B)) of the electric vehicle 10. In addition, the connection cable 1 is electrically connected to the battery trailer 20 by connecting the connector 2 to a terminal portion 23 (see FIG. 3(C)) of the battery trailer 20.

[0026] 2(A), the connection cable 1 is electrically connected to the external charger 30 by connecting the connector 2 to the external charger 30. This makes it possible to electrically connect the external charger 30 and the battery trailer 20 by the connection cable 1.

[0027] As shown in FIG. 2(B), the external charger 30 and the electric vehicle 10 can be electrically connected by the connection cable 1.

[0028] The external charger 30 includes a power supply unit 31, a power supply controller 32, and a terminal unit 33 (see FIG. 3(D)). The external charger 30 charges the battery trailer 20 and the electric vehicle 10 using power from the power supply unit 31. The power supply controller 32 manages the power (voltage and current) state, temperature, etc. of the power supply unit 31. The connector 2 of the connection cable 1 is connected to the terminal unit 33. The power supply controller 32 is an example of a "third detection unit" in the present disclosure.

[0029] As shown in FIG. 3(A), the connector 2 includes a positive terminal 2a, a negative terminal 2b, an electric vehicle terminal 2c, a charger terminal 2d, and a trailer terminal 2e. These terminals (2a to 2e) are arranged in a lattice (matrix). The arrangement of the terminals (2a to 2e) is not limited to this. The electric vehicle terminal 2c and the charger terminal 2d are examples of the "first terminal" and "third terminal" of the present disclosure, respectively. The trailer terminal 2e is an example of the "second terminal" of the present disclosure. The positive terminal 2a and the negative terminal 2b are examples of the "first terminal," "second terminal," and "third terminal" of the present disclosure.

[0030] The positive terminal 2a and the negative terminal 2b are terminals for a power source. The electric vehicle terminal 2c is a terminal for electrically connecting the connection cable 1 to the electric vehicle 10. The trailer terminal 2e is a terminal for electrically connecting the connection cable 1 to the battery trailer 20. The charger terminal 2d is a terminal for electrically connecting the connection cable 1 to an external charger 30.

[0031] 3(B), the terminal unit 13 of the electric vehicle 10 includes a positive terminal 13a, a negative terminal 13b, and a terminal 13c. The positive terminal 13a, the negative terminal 13b, and the terminal 13c are connected to the positive terminal 2a, the negative terminal 2b, and the electric vehicle terminal 2c of the connector 2, respectively. The positive terminal 13a, the negative terminal 13b, and the terminal 13c are an example of an "electric vehicle side terminal" in the present disclosure.

[0032] 3(C), the terminal unit 23 of the battery trailer 20 includes a positive terminal 23a, a negative terminal 23b, and a terminal 23e. The positive terminal 23a, the negative terminal 23b, and the terminal 23e are connected to the positive terminal 2a, the negative terminal 2b, and the trailer terminal 2e of the connector 2, respectively. The positive terminal 23a, the negative terminal 23b, and the terminal 23e are an example of the "electric train both side terminals" of the present disclosure.

[0033] 3(D), the terminal unit 33 of the external charger 30 includes a positive terminal 33a, a negative terminal 33b, and a terminal 33d. The positive terminal 33a, the negative terminal 33b, and the terminal 33d are connected to the positive terminal 2a, the negative terminal 2b, and the charger terminal 2d of the connector 2, respectively. The positive terminal 33a, the negative terminal 33b, and the terminal 33d are an example of a "charger side terminal" in the present disclosure.

[0034] The battery controller 12 of the electric vehicle 10 acquires a detection value of the sensor 3 of the connector 2 connected to the electric vehicle 10. When the battery controller 12 detects, based on the acquired detection value, that each of the positive terminal 2a, the negative terminal 2b, and the electric vehicle terminal 2c is in a conductive state (see "◯" in FIG. 4) and each of the trailer terminal 2e and the charger terminal 2d is in a non-conductive state (see "X" in FIG. 4) (see the "Electric vehicle connection" column in FIG. 4), the battery controller 12 determines that the electric vehicle 10 and the connection cable 1 are normally connected. In cases other than the above, the battery controller 12 determines that the electric vehicle 10 and the connection cable 1 are not normally connected.

[0035] The battery controller 22 of the battery trailer 20 acquires the detection value of the sensor 3 of the connector 2 connected to the battery trailer 20. When the battery controller 22 detects, based on the acquired detection value, that the positive terminal 2a, the negative terminal 2b, and the trailer terminal 2e are each in a conductive state, and that the electric vehicle terminal 2c and the charger terminal 2d are each in a non-conductive state (see the "Battery trailer connection" column in FIG. 4), it determines that the battery trailer 20 and the connection cable 1 are normally connected. In cases other than the above, the battery controller 22 determines that the battery trailer 20 and the connection cable 1 are not normally connected.

[0036] The power supply controller 32 of the external charger 30 acquires the detection value of the sensor 3 of the connector 2 connected to the external charger 30. When the power supply controller 32 detects, based on the acquired detection value, that each of the positive electrode terminal 2a, the negative electrode terminal 2b, and the charger terminal 2d is in a conductive state, and each of the electric vehicle terminal 2c and the trailer terminal 2e is in a non-conductive state (see the "Charger connection" column in FIG. 4), it determines that the battery trailer 20 and the connection cable 1 are normally connected. In cases other than the above, the battery controller 22 determines that the battery trailer 20 and the connection cable 1 are not normally connected.

[0037] When the battery controller 12 (battery controller 22, power supply controller 32) detects that the positive terminal 2a, the negative terminal 2b, the electric vehicle terminal 2c, the trailer terminal 2e, and the charger terminal 2d are each in a non-conductive state (see the "unconnected" column in FIG. 4), it determines that the connector 2 is unconnected. When the battery controller 12 (battery controller 22, power supply controller 32) detects that two or more of the electric vehicle terminal 2c, the trailer terminal 2e, and the charger terminal 2d are in a conductive state (see the upper column of the "failure" column in FIG. 4), it determines that the connector 2 is broken. Furthermore, when the battery controller 12 (battery controller 22, power supply controller 32) detects that the electric vehicle terminal 2c, the trailer terminal 2e, and the charger terminal 2d are each in a non-conductive state even though the positive terminal 2a and the negative terminal 2b are in a conductive state (see the lower column of the "Fault" column in FIG. 4), it determines that the connector 2 is faulty. When the battery controller 12 (battery controller 22, power supply controller 32) determines that the connector 2 is faulty (unconnected), it may notify the electric vehicle 10 (battery trailer 20, external charger 30) that the connector 2 (connection cable 1) is in a faulty (unconnected) state.

[0038] 1, the controller 1b of the connection cable 1 connecting the electric vehicle 10 and the battery trailer 20 determines the connection state of the connection cable 1 based on the above-mentioned determination results (one example of the "detection result" of the present disclosure) of the battery controller 12 of the electric vehicle 10 and the battery controller 22 of the battery trailer 20. Specifically, when the battery controller 12 determines that the electric vehicle 10 and the connection cable 1 are normally connected and the battery controller 22 determines that the battery trailer 20 and the connection cable 1 are normally connected, the controller 1b determines that the electric vehicle 10 and the battery trailer 20 are normally connected by the connection cable 1.

[0039] In addition, the control controller 1b determines that the electric vehicle 10 and the battery trailer 20 are not normally connected by the connection cable 1 in at least one of the cases where the battery controller 12 determines that the electric vehicle 10 and the connection cable 1 are not normally connected and where the battery controller 22 determines that the battery trailer 20 and the connection cable 1 are not normally connected.

[0040] Furthermore, the controller 1b for controlling the connection cable 1 that connects the battery trailers 20 together determines the connection state of the connection cable 1 based on the above-mentioned determination results (one example of the "detection results" of the present disclosure) of the battery controllers 22 of each of the two battery trailers 20. Specifically, when each of the two battery controllers 22 determines that the battery trailer 20 and the connection cable 1 are normally connected, the controller 1b determines that the battery trailers 20 are normally connected together by the connection cable 1.

[0041] In addition, when at least one of the two battery controllers 22 determines that the battery trailer 20 and the connection cable 1 are not properly connected, the control controller 1b determines that the battery trailers 20 are not properly connected to each other by the connection cable 1.

[0042] 2(A), the controller 1b of the connection cable 1 connecting the battery trailer 20 and the external charger 30 determines the connection state of the connection cable 1 based on the above-mentioned determination results (one example of the "detection result" of the present disclosure) of the battery controller 22 of the battery trailer 20 and the power supply controller 32 of the external charger 30. Specifically, when the battery controller 22 determines that the battery trailer 20 and the connection cable 1 are normally connected and the power supply controller 32 determines that the external charger 30 and the connection cable 1 are normally connected, the controller 1b determines that the battery trailer 20 and the external charger 30 are normally connected by the connection cable 1.

[0043] In addition, the control controller 1b determines that the battery trailer 20 and the external charger 30 are not normally connected by the connection cable 1 in at least one of the cases where the battery controller 22 determines that the battery trailer 20 and the connection cable 1 are not normally connected and where the power supply controller 32 determines that the external charger 30 and the connection cable 1 are not normally connected.

[0044] 2(B), the control controller 1b of the connection cable 1 connecting the electric vehicle 10 and the external charger 30 determines the connection state of the connection cable 1 based on the above-mentioned determination results (one example of the "detection result" of the present disclosure) of the battery controller 12 of the electric vehicle 10 and the power supply controller 32 of the external charger 30. Specifically, when the battery controller 12 determines that the electric vehicle 10 and the connection cable 1 are normally connected and the power supply controller 32 determines that the external charger 30 and the connection cable 1 are normally connected, the control controller 1b determines that the electric vehicle 10 and the external charger 30 are normally connected by the connection cable 1.

[0045] In addition, the control controller 1b determines that the electric vehicle 10 and the external charger 30 are not normally connected by the connection cable 1 in at least one of the cases where the battery controller 12 determines that the electric vehicle 10 and the connection cable 1 are not normally connected and where the power supply controller 32 determines that the external charger 30 and the connection cable 1 are not normally connected.

[0046] When the control controller 1b determines that the connection through the connection cable 1 is normal, it enables the exchange of power through the connection cable 1. Specifically, when the control controller 1b determines that the connection through the connection cable 1 is normal, it releases the state in which the exchange of power has been cut off by controlling a relay (main relay of the system) (not shown) provided in the connection cable 1. Note that when the control controller 1b determines that the connection through the connection cable 1 is not normal, it maintains the state in which the exchange of power has been cut off without controlling the relay.

[0047] As described above, in this embodiment, the control controller 1b judges the connection state of the connection cable 1 based on the judgment results of the battery controller 12 and the battery controller 22. As a result, in a state in which the control controller 1b has confirmed that the electric vehicle 10 and the battery trailer 20 are normally connected by the connection cable 1, power can be exchanged through the connection cable 1. In addition, in a state in which the control controller 1b has confirmed that the battery trailers 20 are normally connected to each other by the connection cable 1, power can be exchanged through the connection cable 1. As a result, in a state in which the electric vehicle 10 and the multiple battery trailers 20 are connected by the connection cable 1, power can be supplied from each of the multiple battery trailers 20 to the electric vehicle 10. This makes it possible to easily extend the traveling (working) time of the electric vehicle 10.

[0048] Furthermore, the connection cable 1 that connects the electric vehicle 10 and the battery trailer 20 can be a common cable, and the connection cable 1 that connects the battery trailers 20 together can be a common cable. As a result, the number of types of parts can be reduced.

[0049] In the above embodiment, the controller (12, 22, 32) of each vehicle (charger) that acquires the detection value of the sensor 3 determines whether the connection of the connector 2 is normal or not, but the present disclosure is not limited to this. As shown in FIG. 5, a controller 42a that makes the above determination may be provided in the connector 42. In this case, the controller 1b that controls the connection cable 41 determines whether the connection of the connection cable 41 is normal or not based on the determination of each controller 42a of the pair of connectors 42. The controller 42a is an example of the "first detection unit," "second detection unit," and "third detection unit" of the present disclosure.

[0050] In the above embodiment, the controller 1b provided in the connection cable 1 determines whether the connection state of the connection cable 1 is normal or not, but the present disclosure is not limited to this. For example, at least one of the battery controller 12 of the electric vehicle 10, the battery controller 22 of the battery trailer 20, and the power supply controller 32 of the external charger 30 may determine whether the connection state of the connection cable 1 is normal or not. Also, a server that determines whether the connection state of the connection cable 1 is normal or not may be provided separately from the connection cable 1, the electric vehicle 10, the battery trailer 20, and the external charger 30. In this case, the server may obtain information regarding the connection state of each connector 2 through communication.

[0051] In the above embodiment, the battery controller 12 that manages the battery 11, the battery controller 22 that manages the driving battery pack 21, and the power supply controller 32 that manages the power supply unit 31 each determine (detect) the connection state of the connector 2, but the present disclosure is not limited to this. In the electric vehicle 10 (battery trailer 20, external charger 30), a controller dedicated to the above determination (detection) may be provided separately from the battery controller 12 (battery controller 22, power supply controller 32).

[0052] The configurations described in the above embodiment and the various modified examples may be implemented in any combination.

[0053] 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]

[0054] 1, 41 Connection cable, 1a Cable part, 1b Control controller (judgment unit), 2, 42 Connector, 2a Positive terminal (first terminal) (second terminal) (third terminal), 2b Negative terminal (first terminal) (second terminal) (third terminal), 2c Electric vehicle terminal (first terminal), 2d Charger terminal (third terminal), 2e Trailer terminal (second terminal), 3 Sensor (first detection unit) (second detection unit) (third detection unit), 10 Electric vehicle, 13a Positive terminal (electric vehicle side terminal), 13b Negative terminal (electric vehicle side terminal), 13c Terminal (electric vehicle side terminal), 12 Battery controller (first detection unit), 20 Battery trailer (energy storage vehicle), 21 Running battery pack (energy storage unit), 22 Battery controller (second detection unit), 23a Positive terminal (both sides of storage train), 23b Negative terminal (both sides of storage train), 23e Terminals (terminals on both sides of the storage train), 32 power supply controller (third detection unit), 33a positive terminal (terminal on the charger side), 33b negative terminal (terminal on the charger side), 33d terminal (terminal on the charger side), 100 status detection system.

Claims

1. A state detection system for detecting a connection state between an electric storage vehicle having an electric storage unit, an electric vehicle, and a connection cable, comprising: a connection cable capable of electrically connecting the electric vehicle and the power-storage vehicle and electrically connecting the power-storage vehicles to each other; A determination unit that determines a connection state of the connection cable; a first detection unit that detects an electrical connection state between the electric vehicle and the connection cable; a second detection unit that detects an electrical connection state between the electric storage vehicle and the connection cable, The determination unit determines a connection state of the connection cable based on detection results of the first detection unit and the second detection unit, the electric vehicle includes an electric vehicle side terminal, The electric storage vehicle includes electric storage vehicle terminals on both sides, The connection cable is The cable part and a pair of connectors provided at both ends of the cable portion; Each of the pair of connectors is a first terminal connectable to the electric vehicle side terminal but not connectable to the electric train side terminals; a second terminal connectable to the electric train side terminals and not connectable to the electric vehicle side terminal, The first detection unit detects an electrical connection state between the electric vehicle and the connection cable based on an electrical state of the first terminal; The second detection unit detects an electrical connection state between the electric storage vehicle and the connection cable based on an electrical state of the second terminal.

2. the connection cable is capable of electrically connecting the power-storage vehicle and an external charger, a third detection unit that detects an electrical connection state between the connection cable and the external charger; The state detection system according to claim 1 , wherein the determination unit determines the connection state of the connection cable based on a detection result of the third detection unit.

3. The external charger includes a charger-side terminal, each of the pair of connectors has a third terminal connectable to the charger side terminal and not connectable to either the electric vehicle side terminal or the electric train side terminals; The state detection system according to claim 2 , wherein the third detection unit detects an electrical connection state between the external charger and the connection cable based on an electrical state of the third terminal.

4. A connection cable capable of electrically connecting an electric storage vehicle having an electric storage unit and an electric vehicle, and capable of electrically connecting the electric storage vehicles to each other, a first detection unit that detects an electrical connection state between the electric vehicle and the connection cable; a second detection unit that detects an electrical connection state between the electric storage vehicle and the connection cable; The cable part and a pair of connectors provided at both ends of the cable portion; the electric vehicle includes an electric vehicle side terminal, The electric storage vehicle includes electric storage vehicle terminals on both sides, Each of the pair of connectors is a first terminal connectable to the electric vehicle side terminal but not connectable to the electric train side terminals; a second terminal connectable to the electric train side terminals and not connectable to the electric vehicle side terminal, The first detection unit detects an electrical connection state with the electric vehicle based on an electrical state of the first terminal; The second detection unit detects an electrical connection state between the connection cable and the electric storage vehicle based on an electrical state of the second terminal.

5. The electric storage vehicle and an external charger can be electrically connected to each other, The connection cable according to claim 4 , further comprising a third detection unit that detects an electrical connection state between the external charger and the connection cable.

6. The external charger includes a charger side terminal, each of the pair of connectors has a third terminal connectable to the charger side terminal and not connectable to either the electric vehicle side terminal or the electric train side terminals; The connection cable according to claim 5 , wherein the third detection unit detects an electrical connection state between the external charger and the connection cable based on an electrical state of the third terminal.

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