Excavator, information processing apparatus, program

Abstract

Provided is a technique for a shovel that is driven by an electric storage device chargeable with electric power from an external power supply, the technique enabling the electric storage device to be more appropriately charged. A shovel 200 according to an embodiment of the present invention is provided with a main pump 14, a hydraulic actuator that is driven by hydraulic oil supplied from the main pump 14, a pump electric motor 12 that drives the main pump 14, an electric storage device 19 configured to be chargeable with electric power from an external power supply and supply drive power to the pump electric motor 12, an input device 52 that receives input from a user, and a control device 30 that sets a target value (target charge amount) for the amount of charge of the electric storage device 19 with electric power supplied from the external power supply according to a predetermined input received by the input device 52.

Description

Technical Field

[0001] The present disclosure relates to a shovel or the like.

Background Art

[0002] For example, a shovel driven by the power of a power storage device (e.g., a battery) that can be charged from an external power source is known (see Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, for example, after the work is completed, if the power storage device is charged to a full charge state every time, depending on the work content of the next time, the power storage device may be fully charged even though the charge amount up to the full charge state is not necessary, and the deterioration of the power storage device may progress. On the other hand, although it is possible to perform charge control so that the charge amount of the power storage device does not reach the full charge state, depending on the work content of the next time, there is a possibility that the power storage device does not have enough charge amount until the work is completed.

[0005] Therefore, in view of the above problems, an object of the present disclosure is to provide a technology capable of more appropriately charging a power storage device in a shovel driven by a power storage device that can be charged with power from an external power source.

Means for Solving the Problems

[0006] To achieve the above object, in one embodiment of the present disclosure, a hydraulic pump, a hydraulic actuator driven by hydraulic oil supplied from the hydraulic pump, an electric motor that drives the hydraulic pump, A power storage device configured to be rechargeable with power from an external power source and supply driving power to the electric motor, an input device that receives an input from a user, an acquisition device that acquires information regarding the situation around the excavator, and a control device that sets a target value for the charge amount of the power storage device by the power supplied from the external power source in response to a predetermined input received by the input device. 、 The control device determines a plurality of recommended options regarding the target value based on data related to the actual discharge amount of the power storage device, and sets a predetermined value corresponding to the one option as the target value in response to the predetermined input for selecting one option from the plurality of options. There is provided an excavator. In addition, in another embodiment of the present disclosure, a hydraulic pump, a hydraulic actuator driven by hydraulic oil supplied from the hydraulic pump, an electric motor that drives the hydraulic pump, a power storage device configured to be chargeable with power from an external power source and supply driving power to the electric motor, an input device that receives an input from a user, an acquisition device that acquires information regarding the situation around the excavator, and a control device that sets a target value for the charge amount of the power storage device by the power supplied from the external power source in response to a predetermined input received by the input device. The control device determines a plurality of recommended options regarding the target value based on data related to the deterioration state of the power storage device, and sets a predetermined value corresponding to the one option as the target value in response to the predetermined input for selecting one option from the plurality of options. An excavator is provided. In still another embodiment of the present disclosure, a hydraulic pump, a hydraulic actuator driven by hydraulic oil supplied from the hydraulic pump, an electric motor that drives the hydraulic pump, a power storage device configured to be chargeable with power from an external power source and supply driving power to the electric motor, an input device that receives an input from a user, an acquisition device that acquires information regarding the situation around the excavator, and a control device that sets a target value for the charge amount of the power storage device by the power supplied from the external power source in response to a predetermined input received by the input device. and an output device capable of outputting information to the user. When the target value is set by the control device in response to the predetermined input, the output device outputs to the user an estimated value of the operable time of the excavator when the power storage device is charged up to the target value in advance. An excavator is provided. In still another embodiment of the present disclosure, a hydraulic pump, a hydraulic actuator driven by hydraulic oil supplied from the hydraulic pump, an electric motor that drives the hydraulic pump, a power storage device configured to be chargeable with power from an external power source and supply driving power to the electric motor, an input device that receives an input from a user, An acquisition device that acquires information on the situation around the excavator, A control device that sets a target value for the charge amount of the power storage device by the power supplied from the external power source in response to a predetermined input received by the input device, A display device that compares and displays the progress of deterioration accompanying the actual charging of the power storage device with the predicted transition of deterioration accompanying the charging of the power storage device when it is assumed that the charging of the power storage device is performed every time based on the recommended target value set by the control device, An excavator is provided.

[0007] Also, in another embodiment of the present disclosure, Furthermore in other embodiments, a hydraulic pump, a hydraulic actuator driven by hydraulic oil supplied from the hydraulic pump, an electric motor that drives the hydraulic pump, a power storage device configured to be chargeable with power from an external power source and that supplies driving power to the electric motor, an acquisition device that acquires information regarding the situation around the excavator, and a communication unit capable of communicating with the outside, including the excavator having the above components, an input unit that receives an input from a user, a setting unit that sets a target value for the amount of charge of the power storage device by power supplied from the external power source in response to a predetermined input received by the input unit, The setting unit determines a plurality of recommended options regarding the target value based on data regarding the actual value of the discharge amount of the power storage device, and in response to the predetermined input for selecting one option from the plurality of options, sets a predetermined value corresponding to the one option as the target value, The communication unit transmits the target value set by the setting unit to the excavator. An information processing device is provided.

[0008] Also, in still another embodiment of the present disclosure, a hydraulic pump, a hydraulic actuator driven by hydraulic oil supplied from the hydraulic pump, an electric motor that drives the hydraulic pump, a power storage device configured to be chargeable with power from an external power source and that supplies driving power to the electric motor, an acquisition device that acquires information regarding the situation around the excavator, and a communication unit capable of communicating with the outside, including the excavator having the above components, and an input unit capable of receiving an input from a user, in an information processing device, a setting step of setting a target value for the amount of charge of the power storage device by power supplied from the external power source in response to a predetermined input received by the input unit, a transmission step of causing the target value set in the setting step to be transmitted to the excavator through the communication unit, are executed Yes, In the setting step, based on data regarding the actual value of the discharge amount of the power storage device, a plurality of recommended options regarding the target value are determined, and in response to the predetermined input for selecting one option from the plurality of options, a predetermined value corresponding to the one option is set as the target value, A program is provided.

Advantages of the Invention

[0009] According to the above-described embodiment, in an excavator driven by a power storage device that can be charged with power from an external power source, the power storage device can be charged more appropriately.

Brief Description of the Drawings

[0010]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Modes for Carrying Out the Invention

[0011] Hereinafter, modes for carrying out the invention will be described with reference to the drawings.

[0012] [Overview of the Excavator Management System] First, with reference to FIG. 1, the overview of the excavator management system SYS will be described.

[0013] FIG. 1 is a schematic diagram showing an example of the excavator management system SYS according to the present embodiment.

[0014] As shown in FIG. 1, the excavator management system SYS includes an excavator 200, a management device 300, and a support device 400.

[0015] The excavator management system SYS may, for example, collect various data related to the excavator 200 transmitted (uploaded) from the excavator 200 in the management device 300.

[0016] In addition, the excavator management system SYS may, for example, provide the user with data collected by the management device 300, secondary data (information) generated from the collected data, etc. in the support device 400. The users of the excavator management system SYS include, for example, the users of the excavator 200 (hereinafter referred to as "excavator users"). The excavator users include the operator of the excavator 200, the owner of the excavator 200, the service technician who performs maintenance on the excavator 200, etc. In addition, the users of the excavator management system SYS include, for example, the users of the management device 300 (hereinafter referred to as "management device users"). The management device users include, for example, the administrator of the management device 300, the operator, the developer of the excavator 200, etc. In addition, the users of the excavator management system SYS include the users of the support device 400 (hereinafter referred to as "support device users"). The support device users include the operator of the excavator 200, the supervisor and operator at the work site, the administrator and operator of the management device 300, the service technician in charge of maintaining the excavator 200, the owner of the excavator 200, etc.

[0017] In addition, the excavator management system SYS may, for example, perform various settings related to the control of the excavator 200 in response to an input from the user or automatically in the management device 300 or the support device 400, and transmit them to the excavator 200. Thereby, various operations of the excavator 200 can be controlled and monitored from the management device 300 or the support device 400.

[0018] The excavator 200 included in the excavator management system SYS may be one or a plurality. Thereby, the excavator management system SYS can perform data collection, information provision to the user based on the collected data, settings related to the control of the excavator 200, etc. for a plurality of excavators 200.

[0019] Further, the management device 300 included in the excavator management system SYS may be one or a plurality of units. As a result, the excavator management system SYS can distribute and implement various functions by a plurality of management devices 300.

[0020] Also, the support device 400 included in the excavator management system SYS may be one or a plurality of units. As a result, the excavator management system SYS can provide information regarding the excavator 200 to a plurality of users who each use a plurality of support devices 400.

[0021] <Overview of the Excavator> The excavator 200 according to the present embodiment includes a lower traveling body 1, an upper swing body 3 mounted on the lower traveling body 1 so as to be swingable via a swing mechanism 2, a boom 4, an arm 5, and a bucket 6 as attachments, and a cabin 10 on which an operator rides.

[0022] The lower traveling body 1 includes, for example, a pair of left and right crawlers, and each crawler is self-propelled by being hydraulically driven by traveling hydraulic motors 1A and 1B (see FIG. 2).

[0023] The upper swing body 3 swings with respect to the lower traveling body 1, for example, by being electrically driven by a swing electric motor 21 (see FIG. 2) described later through the swing mechanism 2. Further, the upper swing body 3 may be hydraulically driven by a swing hydraulic motor, for example, through the swing mechanism 2 instead of the swing electric motor 21. In this case, the excavator 200 of the present embodiment corresponds to a configuration in which the power source (engine) of a so-called hydraulic excavator, in which all driven elements are hydraulically driven by hydraulic oil supplied from a main pump 14 (see FIG. 2) having a pump electric motor 12 as a power source, is replaced with the pump electric motor 12.

[0024] The boom 4 is pivotally attached to the center of the front portion of the upper slewing body 3 so as to be able to pitch. An arm 5 is pivotally attached to the tip of the boom 4 so as to be able to rotate vertically, and a bucket 6 is pivotally attached to the tip of the arm 5 so as to be able to rotate vertically. The boom 4, the arm 5, and the bucket 6 are each hydraulically driven by a boom cylinder 7, an arm cylinder 8, and a bucket cylinder 9 as hydraulic actuators.

[0025] The bucket 6 is an example of an end attachment. At the tip of the arm 5, other end attachments may be attached instead of the bucket 6 according to the work content and the like. The other end attachments may be, for example, buckets of different types from the bucket 6 such as a slope bucket and a dredging bucket. Also, the other end attachments may be, for example, end attachments of different types from the bucket such as a breaker, a mixer, and a grappler.

[0026] The cab 10 is mounted on the left side of the front portion of the upper slewing body 3, and inside it, there are provided a driver's seat on which an operator sits and an operating device 26 described later.

[0027] In addition, as will be described later, when the excavator 200 is remotely operated or operates with a fully automatic operation function, the cab 10 may be omitted.

[0028] The excavator 200 operates driven elements such as the lower traveling body 1 (left and right crawlers), the upper slewing body 3, the boom 4, the arm 5, and the bucket 6 according to the operation of an operator boarding the cab 10.

[0029] Also, instead of or in addition to being configured to be operable by an operator boarding the cab 10, the excavator 200 may be configured to be remotely operable (remote operation) from outside the excavator. When the excavator 200 is remotely operated, the inside of the cab 10 may be unmanned. Hereinafter, the description will proceed on the premise that the operation of the operator includes at least one of the operation of the operating device 26 of the operator in the cab 10 and the remote operation of an external operator.

[0030] Remote operation includes, for example, a mode in which the excavator 200 is operated by an operation input related to an actuator of the excavator 200 performed by a predetermined external device. The predetermined external device may be, for example, the management device 300 or the support device 400. In this case, the excavator 200 may transmit, for example, image information (captured image) output by an imaging device included in the surrounding information acquisition device 40 described later to the external device through the communication device 60 described later. Then, the external device may display the image information (captured image) received by a display device provided in the external device (hereinafter, "remote operation display device"). Also, various information images (information screens) displayed on the output device 50 (display device 50A described later) inside the cab 10 of the excavator 200 may be similarly displayed on the remote operation display device of the external device. Thereby, an operator of the external device can remotely operate the excavator 200 while checking display contents such as a captured image or an information screen representing the state around the excavator 200 displayed on the remote operation display device. And the excavator 200 operates the actuator according to a remote operation signal received from the external device by the communication device 60, which represents the content of the remote operation, and may drive driven elements such as the lower traveling body 1 (left and right crawlers), the upper swing body 3, the boom 4, the arm 5, and the bucket 6.

[0031] Also, remote operation may include, for example, a mode in which the excavator 200 is operated by an external voice input or gesture input to the excavator 200 by a person (for example, an operator) around the excavator 200. Specifically, the excavator 200 recognizes voices spoken by surrounding workers or gestures made by workers through a voice input device (for example, a microphone) or a gesture input device (for example, an imaging device) mounted on the excavator 200 (own machine). And the excavator 200 may operate the actuator according to the recognized content of the voice or gesture, etc., and drive driven elements such as the lower traveling body 1 (left and right crawlers), the upper swing body 3, the boom 4, the arm 5, and the bucket 6.

[0032] In addition, the excavator 200 may automatically operate the actuator regardless of the content of the operator's operation. As a result, the excavator 200 realizes a function of automatically operating at least a part of the driven elements such as the lower traveling body 1, the upper revolving body 3, the boom 4, the arm 5, and the bucket 6 (so-called "automatic operation function" or "MC (Machine Control) function").

[0033] The automatic operation function may include a function of automatically operating driven elements (actuators) other than the driven element (actuator) of the operation target in response to an operation on the operator's operation device 26 or a remote operation (so-called "semi-automatic operation function" or "operation support type MC function"). Further, the automatic operation function may include a function of automatically operating at least a part of a plurality of driven elements (hydraulic actuators) on the premise that there is no operation on the operator's operation device 26 or a remote operation (so-called "fully automatic operation function" or "fully automatic type MC function"). In the excavator 200, when the fully automatic operation function is valid, the inside of the cab 10 may be unmanned. Also, the semi-automatic operation function, the fully automatic operation function, etc. may include a mode in which the operation content of the driven element (hydraulic actuator) of the automatic operation target is automatically determined according to a rule defined in advance. Further, the semi-automatic operation function, the fully automatic operation function, etc. may include a mode (so-called "autonomous operation function") in which the excavator 200 autonomously makes various judgments and the operation content of the driven element (hydraulic actuator) of the automatic operation target is determined autonomously according to the judgment result.

[0034] As described later, the excavator 200 is equipped with a communication device 60 and communicates with the management device 300 via the communication line NW. As a result, the excavator 200 can transmit data related to the excavator 200 (itself) to the management device 300 or receive data related to the control of the excavator 200 (itself).

[0035] The communication line NW includes, for example, a wide area network (WAN). The wide area network may include, for example, a mobile communication network with a base station at the terminal. Also, the wide area network may include, for example, a satellite communication network using communication satellites. Further, the wide area network may include, for example, the Internet. Also, the communication line NW includes, for example, a local area network (LAN) inside a facility where the management device 300 is installed. The local area network may be wired, wireless, or a mode including both. Also, the communication line NW may include, for example, a short-range communication line by wireless such as WiFi or Bluetooth (registered trademark).

[0036] Further, the excavator 200 may communicate with the support device 400 through the communication line NW. In this case, the excavator 200 may communicate with the support device 400 indirectly via the management device 300 or directly with the support device 400.

[0037] <Overview of the management device> The management device 300 is provided outside the excavator 200 and manages, for example, the operating state and operation state of the excavator 200.

[0038] The management device 300 is, for example, a cloud server installed in a management center outside the work site of the excavator 200. Also, the management device 300 may be an edge server installed in a temporary office inside the work site of the excavator 200, a local building near the work site, a base station, etc. Also, the management device 300 may be a stationary terminal device (stationary terminal) or a portable terminal device (portable terminal) arranged in a temporary office inside the work site of the excavator 200. The stationary terminal may include, for example, a desktop computer terminal. Also, the portable terminal may include, for example, a mobile phone, a smartphone, a tablet terminal, a laptop computer terminal, etc.

[0039] The management device 300 communicates with each of the excavator 200 and the support device 400 via the communication line NW. Thereby, the management device 300 can collect various data related to the excavator 200 by receiving various data transmitted (uploaded) from the excavator 200. Further, the management device 300 can control the excavator 200 from the outside by transmitting data related to the control of the excavator 200 to the excavator 200. Further, the management device 300 can provide various data to the support device 400 in response to a request from the support device 400, for example.

[0040] <Overview of the support device> The support device 400 is, for example, a terminal device (user terminal) used by a user who receives information in the excavator management system SYS.

[0041] The support device 400 is, for example, a general-purpose portable terminal such as a laptop computer terminal, a tablet terminal, or a smartphone held by a user. Further, the support device 400 may be a general-purpose stationary terminal such as a desktop computer. Further, the support device 400 may be a dedicated terminal device (portable terminal or stationary terminal) for receiving the provision of data (information) related to the excavator 200.

[0042] The support device 400 communicates with the management device 300 via the communication line NW. Thereby, the support device 400 can request the management device 300 to provide data related to the excavator 200. Further, the support device 400 receives the data related to the excavator 200 transmitted from the management device 300 and can provide the information related to the excavator 200 to the user through an output device 330 described later mounted on itself.

[0043] Further, the support device 400 may communicate with the excavator 200 via the communication line NW. In this case, the support device 400 may communicate with the excavator 200 indirectly via the management device 300 or directly with the excavator 200.

[0044] [Configuration of Excavator Management System] Next, in addition to FIG. 1, with reference to FIGS. 2 and 3, the configuration of the excavator management system SYS according to the present embodiment will be described.

[0045] FIG. 2 is a block diagram schematically showing an example of the hardware configuration of the excavator 200 according to the present embodiment. FIG. 3 is a functional block diagram showing an example of the functional configuration of the excavator management system SYS according to the present embodiment.

[0046] In the drawings, the mechanical power line is shown by a double line, the high-pressure hydraulic line is shown by a thick solid line, the pilot line is shown by a broken line, and the electric drive / control line is shown by a thin solid line, respectively.

[0047] [Configuration of Excavator]

[0048] The excavator 200 includes respective components such as a hydraulic drive system for hydraulic drive of driven elements, an operation system for operation of driven elements, a user interface system for information exchange with the user, a communication system for communication with the outside, and a control system for various controls.

[0049] [[Hydraulic Drive System]] As shown in FIG. 2, the hydraulic drive system of the excavator 200 according to the present embodiment includes a plurality of hydraulic actuators such as traveling hydraulic motors 1A and 1B, boom cylinder 7, arm cylinder 8, and bucket cylinder 9 that hydraulically drive respective driven elements such as lower traveling body 1, boom 4, arm 5, and bucket 6. Further, when the upper slewing body 3 is hydraulically driven, the plurality of hydraulic actuators further include a slewing hydraulic motor. The hydraulic drive system of the excavator 200 according to the present embodiment includes a pump motor 12, a main pump 14, and a control valve 17.

[0050] The motor 12 for the pump (an example of a motor) is a power source for the hydraulic drive system. The motor 12 for the pump is, for example, an IPM (Interior Permanent Magnet) motor. The motor 12 for the pump is connected to a high-voltage power source including a power storage device 19 and a motor 21 for rotation via an inverter 18A. The motor 12 for the pump performs power running with three-phase AC power supplied from the power storage device 19 or the motor 21 for rotation via the inverter 18A, and drives the main pump 14 and the pilot pump 15. The drive control of the motor 12 for the pump may be executed by the inverter 18A under the control of a controller 30B described later.

[0051] The main pump 14 sucks hydraulic oil from the hydraulic oil tank T and discharges it into the high-pressure hydraulic line 16, thereby supplying hydraulic oil to the control valve 17 through the high-pressure hydraulic line 16. The main pump 14 is driven by the motor 12 for the pump. The main pump 14 is, for example, a variable displacement hydraulic pump, and under the control of a controller 30A described later, a regulator (not shown) controls the angle of the swash plate (tilt angle). Thereby, the main pump 14 can adjust the stroke length of the piston and control the discharge flow rate (discharge pressure).

[0052] The control valve 17 is a hydraulic control device that controls the hydraulic drive system in response to an operator's operation or an operation command corresponding to an automatic operation function. As described above, the control valve 17 is connected to the main pump 14 via the high-pressure hydraulic line 16, and is configured to be able to selectively supply the hydraulic oil supplied from the main pump 14 to a plurality of hydraulic actuators. For example, the control valve 17 is a valve unit including a plurality of hydraulic control valves (direction change valves) that control the flow rate and flow direction of the hydraulic oil supplied from the main pump 14 to each of the hydraulic actuators. The hydraulic oil supplied from the main pump 14 and flowing through the control valve 17 and the hydraulic actuator is discharged from the control valve 17 to the hydraulic oil tank T.

[0053] <<Electric drive system>> As shown in FIG. 2, the electric drive system of the excavator 200 according to the present embodiment includes a pump motor 12, a sensor 12s, and an inverter 18A. Further, the electric drive system of the excavator 200 according to the present embodiment includes a swing drive device 20, a sensor 21s, and an inverter 18B. Further, the electric drive system of the excavator 200 according to the present embodiment includes a power storage device 19 and an in-vehicle charger 130.

[0054] The sensor 12s includes a current sensor 12s1, a voltage sensor 12s2, and a rotation state sensor 12s3.

[0055] The current sensor 12s1 detects the current of each of the three phases (U phase, V phase, and W phase) of the pump motor 12. The current sensor 12s1 is provided, for example, in the power path between the pump motor 12 and the inverter 18A. The detection signal corresponding to the current of each of the three phases of the pump motor 12 detected by the current sensor 12s1 is directly taken into the inverter 18A through a communication line. Further, the detection signal may be taken into the controller 30B through a communication line and input to the inverter 18A via the controller 30B.

[0056] The voltage sensor 12s2 detects the applied voltage of each of the three phases of the pump motor 12. The voltage sensor 12s2 is provided, for example, in the power path between the pump motor 12 and the inverter 18A. The detection signal corresponding to the applied voltage of each of the three phases of the pump motor 12 detected by the voltage sensor 12s2 is directly taken into the inverter 18A through a communication line. Further, the detection signal may be taken into the controller 30B through a communication line and input to the inverter 18A via the controller 30B.

[0057] The rotation state sensor 12s3 detects the rotation state of the pump motor 12. The rotation state of the pump motor 12 includes, for example, a rotation position (rotation angle), a rotation speed, and the like. The rotation state sensor 12s3 is, for example, a rotary encoder or a resolver.

[0058] The inverter 18A drives and controls the pump motor 12 under the control of the controller 30B. The inverter 18A includes, for example, a conversion circuit that converts DC power into three-phase AC power or converts three-phase AC power into DC power, a drive circuit that drives the conversion circuit by switching, and a control circuit that outputs a control signal (for example, a PWM (Pulse Width Modulation) signal) that defines the operation of the drive circuit.

[0059] The control circuit of the inverter 18A performs drive control of the pump motor 12 while grasping the operating state of the pump motor 12. For example, the control circuit of the inverter 18A grasps the operating state of the pump motor 12 based on the detection signal of the rotation state sensor 12s3. Further, the control circuit of the inverter 18A may sequentially estimate the rotation angle of the rotation shaft of the pump motor 12 and the like based on the detection signal of the current sensor 12s1 and the detection signal of the voltage sensor 12s2 (or the voltage command value generated during the control process) to grasp the operating state of the pump motor 12.

[0060] Note that at least one of the drive circuit and the control circuit of the inverter 18A may be provided outside the inverter 18A.

[0061] The swing drive device 20 includes a swing motor 21, a resolver 22, a mechanical brake 23, and a swing speed reducer 24.

[0062] The slewing electric motor 21 performs a power running operation for slewing and driving the upper slewing body 3 and a regenerative operation for generating regenerative power to brake the upper slewing body 3 under the control of the controller 30B and the inverter 18B. The slewing electric motor 21 is connected to a high-voltage power source (i.e., the power storage device 19) via the inverter 18B and is driven by three-phase AC power supplied from the power storage device 19 via the inverter 18B. Further, the slewing electric motor 21 supplies regenerative power to the power storage device 19 and the pump motor 12 via the inverter 18B. Thereby, the power storage device 19 can be charged or the pump motor 12 can be driven with the regenerative power. The switching control between the power running operation and the regenerative operation of the slewing electric motor 21 may be executed by the inverter 18B under the control of the controller 30B, for example. A resolver 22, a mechanical brake 23, and a slewing speed reducer 24 are connected to the rotating shaft 21A of the slewing electric motor 21.

[0063] The resolver 22 detects the rotation state of the slewing electric motor 21. The rotation state of the slewing electric motor 21 includes, for example, the rotation position (rotation angle), the rotation speed, and the like. The detection signal corresponding to the rotation angle or the like detected by the resolver 22 may be directly taken into the inverter 18B through a communication line. Further, the detection signal may be taken into the controller 30B through a communication line and input to the inverter 18B via the controller 30B.

[0064] The mechanical brake 23 mechanically generates a braking force on the rotating shaft 21A of the slewing electric motor 21 under the control of the controller 30B. Thereby, the mechanical brake 23 can perform the slewing braking of the upper slewing body 3 or maintain the stopped state of the upper slewing body 3.

[0065] The slewing reducer 24 is connected to the rotating shaft 21A of the slewing motor 21, and increases the torque by reducing the output (torque) of the slewing motor 21 at a predetermined reduction ratio, thereby driving the upper slewing body 3 to slewing. That is, during the power running operation, the slewing motor 21 drives the upper slewing body 3 to slewing via the slewing reducer 24. Further, the slewing reducer 24 increases the speed of the inertial rotational force of the upper slewing body 3 and transmits it to the slewing motor 21 to generate regenerative power. That is, during the regenerative operation, the slewing motor 21 performs regenerative power generation by the inertial rotational force of the upper slewing body 3 transmitted via the slewing reducer 24, and brakes the upper slewing body 3 from slewing.

[0066] The sensor 21s includes a current sensor 21s1 and a voltage sensor 21s2.

[0067] The current sensor 21s1 detects the current of each of the three phases (U phase, V phase, and W phase) of the slewing motor 21. The current sensor 21s1 is provided, for example, in the power path between the slewing motor 21 and the inverter 18B. The detection signal corresponding to the current of each of the three phases of the slewing motor 21 detected by the current sensor 21s1 may be directly taken into the inverter 18B through the communication line. Further, the detection signal may be taken into the controller 30B through the communication line and input into the inverter 18B via the controller 30B.

[0068] The voltage sensor 21s2 detects the applied voltage of each of the three phases of the slewing motor 21. The voltage sensor 21s2 is provided, for example, in the power path between the slewing motor 21 and the inverter 18B. The detection signal corresponding to the applied voltage of each of the three phases of the slewing motor 21 detected by the voltage sensor 21s2 is directly taken into the inverter 18B through the communication line. Further, the detection signal may be taken into the controller 30B through the communication line and input into the inverter 18B via the controller 30B.

[0069] The inverter 18B drives and controls the slewing motor 21 under the control of the controller 30B. The inverter 18B includes, for example, a conversion circuit that converts DC power into three-phase AC power or converts three-phase AC power into DC power, a drive circuit that drives the conversion circuit by switching, and a control circuit that outputs a control signal (for example, a PWM signal) that defines the operation of the drive circuit.

[0070] For example, the control circuit of the inverter 18B performs speed feedback control and torque feedback control regarding the slewing motor 21 based on the detection signals of the current sensor 21s1, the voltage sensor 21s2, and the resolver 22.

[0071] Note that at least one of the drive circuit and the control circuit of the inverter 18B may be provided outside the inverter 18B.

[0072] The inverters 18A and 18B may be housed in one housing and may constitute an inverter unit integrally.

[0073] Note that when the upper slewing body 3 is hydraulically driven by a slewing hydraulic motor, the slewing motor 21, the sensor 21s, and the inverter 18B are omitted. In this case, the slewing hydraulic motor drives the upper slewing body 3 via the slewing speed reducer 24, and the mechanical brake 23 applies a mechanical braking force to the rotating shaft of the slewing hydraulic motor.

[0074] The power storage device 19 is charged (electricity is stored) when the external commercial power supply and the charging port 132 of the excavator 200 are connected by a predetermined cable (hereinafter, "charging cable"), and the stored power is supplied to the pump motor 12 and the slewing motor 21 via the DC (Direct Current) bus 110. Further, the power storage device 19 charges the generated power (regenerative power) of the slewing motor 21. The power storage device 19 is, for example, a lithium-ion battery and has a relatively high output voltage (for example, several hundred volts).

[0075] The power storage device 19 may incorporate, for example, sensors for detecting various states of the power storage device 19. The sensors incorporated in the power storage device 19 include, for example, a current sensor for detecting the current of the power storage device 19, a voltage sensor for detecting the voltage of the power storage device 19, a temperature sensor for detecting the temperature of the power storage device 19, and the like. The detection data of the sensors incorporated in the power storage device 19 is taken into the control device 30 (for example, the controller 30D).

[0076] The excavator 200 may have, as a charging mode (hereinafter, "charging mode") of the power storage device 19, a charging mode (hereinafter, "normal charging mode") in which charging is performed at a relatively low charging speed (i.e., a relatively small current), and a charging mode (hereinafter, "rapid charging mode") in which charging is performed at a relatively high charging speed (i.e., a relatively large current). Whether the normal charging mode or the rapid charging mode is adopted as the charging mode when the power storage device 19 is charged depends on, for example, the form (voltage, output, etc.) of the power supplied from an external commercial power source.

[0077] In addition, a power conversion device for boosting the output voltage of the power storage device 19 and applying it to the pump motor 12 and the slewing motor 21 may be provided between the power storage device 19 and the DC bus 110. In this case, the power conversion device boosts the power of the power storage device 19, steps down the power of the pump motor 12 and the slewing motor 21 via the inverters 18A and 18B, and stores the power in the power storage device 19. The power conversion device may switch between a boosting operation and a bucking operation so that the voltage value of the DC bus 110 falls within a certain range according to the operating states of the pump motor 12 and the slewing motor 21. The switching control between the boosting operation and the bucking operation of the power conversion device may be executed by the controller 30B based on, for example, the detected voltage value of the DC bus 110, the detected voltage value of the power storage device 19, and the detected current value of the power storage device 19.

[0078] The in-vehicle charger 130 is provided in the power path between the charging port 132 and the power storage device 19. Under the control of the controller 30D, the in-vehicle charger 130 converts the AC power supplied via a charging cable connected to the charging port 132 from an external commercial power source into DC power, adjusts the voltage (current), and supplies it to the power storage device 19. Thereby, the in-vehicle charger 130 can charge the power storage device 19 with the power supplied from an external commercial power source.

[0079] In addition, part or all of the in-vehicle charger 130 may be provided on the external commercial power source side, and DC power may be supplied from the external commercial power source. In this case, the in-vehicle charger 130 may be omitted. Also, the charging port 132 and the power path from the charging port 132 to the power storage device 19 may be provided in two separate systems for the case of normal charging mode and the case of rapid charging.

[0080] <<Operating System>> As shown in FIG. 2, the operating system of the excavator 200 according to this embodiment includes a pilot pump 15, an operating device 26, and a pressure control valve 31.

[0081] The pilot pump 15 supplies pilot pressure to various hydraulic devices (for example, the pressure control valve 31) mounted on the excavator 200 via the pilot line 25. Thereby, under the control of the controller 30A, the pressure control valve 31 can supply the pilot pressure corresponding to the operation content (for example, the operation amount and the operation direction) of the operating device 26 to the control valve 17. Therefore, the controller 30A and the pressure control valve 31 can realize the operation of the driven element (hydraulic actuator) according to the operation content of the operator on the operating device 26. Also, under the control of the controller 30A, the pressure control valve 31 can supply the pilot pressure corresponding to the content of the remote operation specified by the remote operation signal to the control valve 17. The pilot pump 15 is, for example, a fixed displacement hydraulic pump and is driven by the pump motor 12 as described above.

[0082] The operating device 26 is provided within the reach of the operator at the operator's seat in the cabin 10, and is used for the operator to operate respective driven elements (i.e., the left and right crawlers of the lower traveling body 1, the upper slewing body 3, the boom 4, the arm 5, and the bucket 6, etc.). In other words, the operating device 26 is used for the operator to operate hydraulic actuators (e.g., traveling hydraulic motors 1A, 1B, boom cylinder 7, arm cylinder 8, and bucket cylinder 9, etc.) or electric actuators (e.g., slewing electric motor 21, etc.) that drive respective driven elements. The operating device 26 is, for example, electric, and outputs an electric signal (hereinafter, "operation signal") corresponding to the operation content by the operator. The operation signal output from the operating device 26 is taken into the controller 30A. Thereby, the control device 30 including the controller 30A can control the pressure control valve 31 and the inverter 18B, and control the operation of the driven elements (actuators) of the excavator 200 in accordance with the operation content of the operator and operation commands corresponding to the automatic operation function.

[0083] The operating device 26 includes, for example, levers 26A to 26C. The lever 26A may be configured to be able to receive operations related to the arm 5 (arm cylinder 8) and the upper slewing body 3 (slewing operation) respectively according to operations in the front-rear direction and the left-right direction. The lever 26B may be configured to be able to receive operations related to the boom 4 (boom cylinder 7) and the bucket 6 (bucket cylinder 9) respectively according to operations in the front-rear direction and the left-right direction. The lever 26C may be configured to be able to receive operations of the lower traveling body 1 (crawler).

[0084] In addition, when the control valve 17 is composed of an electromagnetic pilot type hydraulic control valve (direction switching valve), the operation signal of the electric operating device 26 may be directly input to the control valve 17, and each hydraulic control valve may operate according to the operation content of the operating device 26. Further, the operating device 26 may be a hydraulic pilot type that outputs a pilot pressure corresponding to the operation content. In this case, the pilot pressure corresponding to the operation content is supplied to the control valve 17.

[0085] The pressure control valve 31 outputs a predetermined pilot pressure using the hydraulic oil supplied from the pilot pump 15 through the pilot line 25 under the control of the controller 30A. The pilot line on the secondary side of the pressure control valve 31 is connected to the control valve 17, and the pilot pressure output from the pressure control valve 31 is supplied to the control valve 17.

[0086] <<User interface system>> As shown in FIGS. 2 and 3, the user interface system of the excavator 200 according to the present embodiment includes an operation device 26, an output device 50, and an input device 52.

[0087] The output device 50 is provided inside the cabin 10 and outputs various information to the excavator user inside the cabin 10 under the control of the control device 30 (for example, the controller 30A). The output device 50 includes a display device 50A and a sound output device 50B (see FIG. 3).

[0088] The display device 50A outputs (notifies) information to the excavator user inside the cabin 10 in a visual manner. The display device 50A includes, for example, a liquid crystal display or an organic EL (Electroluminescence) display. The display device 50A is installed, for example, in a place where it is easily visible from the excavator user sitting on the operator's seat inside the cabin 10, and may display various information images for the excavator user under the control of the controller 30A.

[0089] Also, the sound output device 50B outputs information to the excavator user inside the cabin 10 in an auditory manner, for example. The sound output device 50B is, for example, a buzzer or a speaker.

[0090] Further, the output device 50 may operate under the control of a controller other than the controller 30A (for example, the controller 30C). Further, the output device 50 (display device 50A, sound output device 50B) may be provided in a manner capable of outputting various information to a user (such as an operator or a worker) around the excavator 200 outside the cabin 10. For example, the display device 50A and the sound output device 50B may be provided on the side surface of the upper swing body 3, for example, in the vicinity of the location where the charging port 132 is provided. Thereby, the excavator 200 can notify the user of information regarding external charging of the power storage device 19 by using the display device 50A and the sound output device 50B in the vicinity of the charging port 132. In particular, as described above, it is suitable when the cabin 10 is omitted.

[0091] The input device 52 is provided inside the cabin 10 and receives various inputs from the excavator user inside the cabin 10. The input device 52 may include, for example, an operation input device that receives operation inputs from the excavator user. The operation input device may include, for example, buttons, toggles, levers, touch panels, touch pads, and the like. Further, the input device 52 may include, for example, a voice input device that receives voice inputs from the excavator user or a gesture input device that receives gesture inputs from the excavator user. The voice input device includes, for example, a microphone that acquires the voice of the excavator user inside the cabin 10. The gesture input device includes, for example, an imaging device (indoor camera) that can image the state of the gestures of the excavator user inside the cabin 10. A signal corresponding to the input from the excavator user received by the input device 52 is taken into the control device 30 (for example, the controller 30A).

[0092] Further, the input device 52 may be provided in a manner capable of receiving an input from a user (such as an operator or a worker) around the excavator 200 outside the cabin 10. For example, the input device 52 may be provided near the side surface of the upper swing body 3, for example, near the location where the charging port 132 is provided, together with the above-described output device 50. Thereby, the excavator 200 can receive an input regarding external charging of the power storage device 19 from the user using the input device 52 near the charging port 132.

[0093] <<Communication system>> As shown in FIGS. 2 and 3, the communication system of the excavator 200 according to the present embodiment includes a communication device 60.

[0094] The communication device 60 (an example of an input device) communicates with the outside of the excavator 200 such as the management device 300 through the communication line NW. The communication device 60 includes, for example, a mobile communication module corresponding to a mobile communication standard such as LTE (Long Term Evolution), 4G (4 th Generation), 5G (5 th Generation), or a satellite communication module for connecting to a satellite communication network.

[0095] <<Control system>> As shown in FIG. 2, the control system of the excavator 200 according to the present embodiment includes a control device 30 and a surrounding information acquisition device 40.

[0096] The control device 30 includes controllers 30A to 30D.

[0097] Controllers 30A to 30D may each have their functions realized by any hardware, or any combination of hardware and software, etc. For example, controllers 30A to 30D may each be centered around a computer including a processor such as a CPU (Central Processing Unit), a memory device (main memory device) such as a RAM (Random Access Memory), a non-volatile auxiliary storage device such as a ROM (Read Only Memory), and an interface device to the outside. For example, controllers 30A to 30D each load a program installed in the auxiliary storage device into the memory device and execute it on the CPU to realize various functions. The data of the program is acquired by controllers 30A to 30D from a predetermined recording medium through a predetermined external interface and installed in the auxiliary storage device. The predetermined recording medium includes general-purpose recording media such as a CD (Compact Disc), a DVD (Digital Versatile Disc), a BD (Blu-ray (registered trademark) Disc), an SD memory card, a USB (Universal Serial Bus) memory, etc. Also, the predetermined recording medium includes dedicated recording media such as a diagnostic tool for the excavator 200. Also, the data of the program may be downloaded from outside the excavator 200 (for example, a management device 300, etc.) through the communication device 60 and installed in the auxiliary storage device of controllers 30A to 30D.

[0098] Controller 30A cooperates with various controllers constituting the control device 30 including controllers 30B to 30D to perform drive control of the excavator 200.

[0099] For example, in response to an operation signal input from the operation device 26, controller 30A outputs a control command to the pressure control valve 31 to cause the pressure control valve 31 to output a pilot pressure corresponding to the operation content of the operation device 26. Thereby, controller 30A can realize the operation of the driven element (hydraulic actuator) of the excavator 200 corresponding to the operation content of the electric operation device 26.

[0100] Also, when the excavator 200 is remotely operated, the controller 30A may perform control related to remote operation, for example. Specifically, the controller 30A may output a control command to the pressure control valve 31 and cause the pressure control valve 31 to output a pilot pressure corresponding to the content of the remote operation. Thereby, the controller 30A can realize the operation of the excavator 200 (driven element) corresponding to the content of the remote operation.

[0101] Also, the controller 30A may perform control related to the automatic operation function, for example. Specifically, the controller 30A may output a control command to the pressure control valve 31 and cause the pilot pressure corresponding to the operation command corresponding to the automatic operation function to act from the pressure control valve 31 on the control valve 17. Thereby, the controller 30A can realize the operation of the driven element (hydraulic actuator) of the excavator 200 corresponding to the automatic operation function.

[0102] Also, the controller 30A may integrally control the operation of the entire excavator 200 (various devices mounted on the excavator 200) based on bidirectional communication with various controllers such as the controllers 30B to 30D.

[0103] The controller 30B performs drive control of the electric drive system based on various information input from the controller 30A (for example, a control command including an operation signal of the operation device 26).

[0104] The controller 30B may drive the inverter 18B and perform switching control of the operating state (power running operation and regenerative operation) of the swing motor 21 based on, for example, the operation content of the operating device 26. Further, when the excavator 200 is remotely operated, for example, the controller 30B may drive the inverter 18B and perform switching control of the operating state (power running operation and regenerative operation) of the swing motor 21 based on the content of the remote operation. Further, when the automatic operation function of the excavator 200 is effective, for example, the controller 30B may drive the inverter 18B and perform switching control of the operating state (power running operation and regenerative operation) of the swing motor 21 based on an operation command corresponding to the automatic operation function.

[0105] In addition, when the above-described power conversion device is provided between the power storage device 19 and the DC bus 110, the controller 30B may drive the power conversion device based on, for example, the operation state of the operating device 26, and perform switching control of the boost operation and the buck operation of the power conversion device, in other words, the discharge state and the charge state of the power storage device 19. Further, when the excavator 200 is remotely operated, for example, the controller 30B may drive the power conversion device based on the content of the remote operation and perform switching control of the discharge state and the charge state of the power storage device 19. Further, when the automatic operation function of the excavator 200 is effective, for example, the controller 30B may drive the power conversion device based on an operation command corresponding to the automatic operation function and perform switching control of the discharge state and the charge state of the power storage device 19.

[0106] The controller 30C performs control related to the surrounding monitoring function of the excavator 200.

[0107] The controller 30C detects a predetermined object (hereinafter, "monitoring target") around the excavator 200 and its position based on, for example, information regarding the situation of the three-dimensional space around the excavator 200 (for example, detection information regarding an object around the excavator 200 and its position) taken in from the surrounding information acquisition device 40.

[0108] Further, when the controller 30C detects a monitoring target in a region relatively close to the excavator 200, for example, it may output an alarm through an output device 50 (such as a display device or a sound output device) inside the cab 10.

[0109] The controller 30D performs control related to the power storage device 19, for example.

[0110] The controller 30D may monitor the state of the power storage device 19 or perform abnormality diagnosis based on detection data captured from sensors mounted on the power storage device 19, for example.

[0111] Further, the controller 30D may control the in-vehicle charger 130 and perform control related to charging of the power storage device 19, for example.

[0112] Note that some or all of the functions of the controllers 30B to 30D may be integrated into the controller 30A. That is, various functions realized by the control device 30 may be realized by one controller, or may be distributed and realized by two or more appropriately set controllers.

[0113] The surrounding information acquisition device 40 outputs information regarding the situation of the three-dimensional space around the excavator 200. The surrounding information acquisition device 40 may include, for example, an ultrasonic sensor, a millimeter-wave radar, a monocular camera, a stereo camera, a depth camera, a LIDAR (Light Detection and Ranging), a distance image sensor, an infrared sensor, and the like. The output information of the surrounding information acquisition device 40 is captured by the controller 30C.

[0114] <<Other components>> As shown in FIG. 2, the excavator 200 according to the present embodiment includes a DC-DC converter 44, a battery 46, and an air conditioner 80.

[0115] The DC-DC converter 44 is provided, for example, on the upper swing body 3, and steps down the very high-voltage DC power output from the power storage device 19 to a predetermined voltage (for example, about 24 volts) and outputs it. The output power of the DC-DC converter 44 is supplied to the battery 46 to be charged (stored), or supplied to electrical equipment driven by the power of the battery 46, such as the controllers 30A to 30C.

[0116] Note that the DC-DC converter 44 may be replaced by an alternator. In this case, the alternator is provided on the upper swing body 3 and generates electricity by the power of the pump motor 12. The generated power of the alternator is supplied to the battery 46, just like in the case of the DC-DC converter 44, to charge (store) the battery 46 or supply it to electrical equipment driven by the power of the battery 46, such as the controllers 30A to 30D.

[0117] The battery 46 is provided on the upper swing body 3 and has a relatively low output voltage (for example, 24 volts). The battery 46 supplies power to electrical equipment other than the electric drive system that requires relatively high power (for example, the controllers 30A to 30D, the air conditioner 80, etc.). The battery 46 is, for example, a lead-acid battery or a lithium-ion battery, and is charged by the output power of the DC-DC converter 44 as described above.

[0118] The air conditioner 80 adjusts the temperature, humidity, etc. inside the cabin 10. The air conditioner 80 operates, for example, on the power supplied from the DC-DC converter 44 or the battery 46. The air conditioner 80 is, for example, a heat pump type for both heating and cooling and includes a compressor 82.

[0119] Note that the air conditioner 80 may include, for example, a refrigeration cycle and a heater for heating instead of the heat pump cycle. The heater for heating is, for example, a PTC (Positive Temperature Coefficient) heater or a combustion heater.

[0120] Compressor 82 compresses the refrigerant in the heat pump cycle. The compressor 82 includes, for example, a built-in electric motor and an inverter circuit that drives the electric motor, and is electrically driven by the power supplied from the power storage device 19. The refrigerant compressed by the compressor 82 is sent to the condenser in the heat pump cycle during the cooling operation of the air conditioner 80, and is sent to the evaporator in the heat pump cycle during the heating operation of the air conditioner 80.

[0121] Note that the compressor 82 may be configured to be mechanically driven by the pump motor 12.

[0122] <Configuration of the management device> As shown in FIG. 3, the management device 300 includes a control device 310, a communication device 320, an output device 330, and an input device 340.

[0123] The control device 310 performs control related to the management device 300. The control device 310 may be realized by, for example, any hardware, or any combination of hardware and software. The control device 310 may be configured around a computer including, for example, a processor device such as a CPU, a memory device (main storage device) such as a RAM, an auxiliary storage device such as a ROM, and an interface device with the outside. For example, the control device 310 loads a program installed in the auxiliary storage device into the memory device and executes it on the CPU to realize various functions. The data of the program is acquired by the control device 310 from a predetermined recording medium through a predetermined external interface and installed in the auxiliary storage device. The predetermined recording medium includes, for example, general-purpose recording media such as CDs, DVDs, BDs, SD memory cards, and USB memories. The predetermined recording medium also includes dedicated recording media such as diagnostic tools for the management device 300. Also, the data of the program may be downloaded from a computer outside the management device 300 through the communication device 320 and installed in the auxiliary storage device of the control device 310.

[0124] The communication device 320 is any device that communicates with the outside, such as the excavator 200 and the support device 400, through the communication line NW.

[0125] The output device 330 outputs various information to the management device user under the control of the control device 310.

[0126] The output device 330 includes, for example, a display device that outputs (notifies) information to the management device user in a visual manner. The display device includes, for example, a liquid crystal display or an organic EL display. The display device may display various information images for the management device user.

[0127] Also, the output device 330 includes, for example, a sound output device that outputs (notifies) information to the management device user in an auditory manner. The sound output device includes, for example, a speaker, a buzzer, etc.

[0128] The input device 340 receives various inputs from the management device user. The input device 340 includes, for example, an operation input device that receives operation inputs from the management device user. The operation input device includes, for example, a mouse, a keyboard, a button, a toggle, a lever, a touch panel, a touch pad, etc. Also, the input device 340 includes, for example, a voice input device that receives voice inputs from the management device user and a gesture input device that receives gesture inputs from the management device user. The voice input device includes, for example, a microphone that acquires the voice of the management device user. The gesture input device includes, for example, an imaging device that can image the state of the gestures of the management device user. The signal corresponding to the input from the management device user received by the input device 340 is taken into the control device 310.

[0129] <Configuration of the support device> As shown in FIG. 3, the support device 400 includes a control device 410, a communication device 420, an output device 430, and an input device 440.

[0130] The control device 410 controls the support device 400. The control device 410 may have its functions realized by, for example, any hardware, or any combination of hardware and software. The control device 410 may be mainly configured around a computer including, for example, a processor device such as a CPU, a memory device (main storage device) such as a RAM, an auxiliary storage device such as a ROM, and an interface device to the outside. For example, the control device 410 loads a program installed in the auxiliary storage device into the memory device and executes it on the CPU to realize various functions. The program data is, for example, acquired by the control device 410 from a predetermined recording medium through a predetermined external interface and installed in the auxiliary storage device. The predetermined recording medium includes, for example, general-purpose recording media such as CDs, DVDs, BDs, SD memory cards, and USB memories. The predetermined recording medium also includes dedicated recording media such as diagnostic tools of the support device 400. Also, the program data may be downloaded from outside the support device 400 (for example, the management device 300) through the communication device 420 and installed in the auxiliary storage device of the control device 410.

[0131] The communication device 420 is any device that communicates with the outside of the support device 400, such as the management device 300, through the communication line NW. The communication device 420 may be, for example, a mobile communication module compatible with mobile communication standards such as LTE, 4G, and 5G.

[0132] The output device 430 outputs various information to the support device user under the control of the control device 410.

[0133] The output device 430 includes, for example, a display device that outputs (notifies) information to the support device user in a visual way. The display device includes, for example, a liquid crystal display and an organic EL display. The display device may display various information images for the support device user.

[0134] In addition, the output device 430 includes, for example, a sound output device that outputs (notifies) information to the support device user in an auditory manner. The sound output device includes, for example, a speaker, a buzzer, and the like.

[0135] The input device 440 receives various inputs from the support device user. The input device 440 includes, for example, an operation input device that receives operation inputs from the support device user. The operation input device includes, for example, a mouse, a keyboard, a button, a toggle, a lever, a touch panel, a touch pad, and the like. In addition, the input device 440 includes a voice input device that receives voice inputs from the support device user and a gesture input device that receives gesture inputs from the support device user. The voice input device includes, for example, a microphone that acquires the voice of the support device user. The gesture input device includes, for example, an imaging device that can image the state of the gestures of the support device user. The signal corresponding to the input from the support device user received by the input device 440 is taken into the control device 410.

[0136] [Target charge amount setting function] Next, in addition to FIG. 3, referring to FIGS. 4 to 6, the target charge amount setting function regarding the power storage device 19 will be described.

[0137] The target charge amount setting function regarding the power storage device 19 is a function that can instruct the target value of the charge amount (hereinafter, "target charge amount") during charging of the power storage device 19 by the user making a predetermined input through the input devices 52, 340, 440, and cause the control device 30 to set it. When the target charge amount of the power storage device 19 is set through the target charge amount setting function, during charging of the power storage device 19 after setting, the power storage device 19 is charged up to the target charge amount and the charging is completed. Also, the target charge amount of the power storage device 19 set through the target charge amount setting function may be valid only once for the immediately subsequent charging of the power storage device 19, or may continue to be in an effective state unless cancelled in response to a predetermined input through the input devices 52, 340, 440. Also, the period and number of times during which the set target charge amount of the power storage device 19 is valid may be set through the input devices 52, 340, 440. Hereinafter, the charge amount represents the absolute amount of electric power charged (stored) in the power storage device 19.

[0138] <Configuration related to the target charge amount setting function of the excavator> As shown in FIG. 3, the control device 30 includes a screen display processing unit 3001, a degradation degree calculation unit 3002, a discharge amount actual value calculation unit 3003, a storage unit 3004, a recommended value calculation unit 3005, an operation time estimation unit 3006, a target charge amount setting unit 3007, an additional charge amount calculation unit 3008, a charging required time estimation unit 3009, a charge control unit 3010, a data transmission unit 3011, a notification unit 3012, and a log recording unit 3013.

[0139] The screen display processing unit 3001 causes the display device 50A to display various screens related to the target charge amount setting function.

[0140] The screen display processing unit 3001 causes the display device 50A to display, for example, a setting screen related to the target value of the charge amount of the power storage device 19. The setting screen related to the target charge amount of the power storage device 19 is a screen for the excavator user to give an instruction regarding the target charge amount of the power storage device 19 and cause the control device 30 to set the target charge amount. When the screen display processing unit 3001 receives a predetermined input for displaying the setting screen related to the target charge amount input from the excavator user through the input device 52, the display content of the display device 50A may be shifted to the setting screen related to the target charge amount.

[0141] For example, FIG. 4 is a diagram showing an example (setting screen 4000) of the setting screen related to the target charge amount of the power storage device 19 displayed on the display device 50A.

[0142] The setting screen 4000 includes a cursor 4100, a setting operation area 4200, a setting operation area 4300, an information presentation area 4400, and a display content change area 4500.

[0143] The cursor 4100 indicates which of the manual setting mode and the automatic setting mode is in an effective state (selected state) for setting the target charge amount of the power storage device 19. The manual setting mode represents a state in which the target charge amount is set using the setting operation area 4200, and the automatic setting mode represents a state in which the target charge amount is set using the setting operation area 4300. In this example, the cursor 4100 indicates the setting operation area 4300 (specifically, the character information of "automatic setting"), indicating that the target charge amount is set using the setting operation area 4300 (automatic setting mode).

[0144] The cursor 4100 is configured to be switchable between a state of indicating the setting operation area 4200 (specifically, the character information of "manual setting") (refer to the dotted line in the figure) in response to a predetermined input to the input device 52 and a state of indicating the setting operation area 4300. Thereby, the excavator user can operate the cursor 4100 through the input device 52 to switch between a state in which the target charge amount is set using the setting operation area 4200 (manual setting mode) and a state in which the target charge amount is set using the setting operation area 4300 (automatic setting mode).

[0145] The setting operation area 4200 is used for the excavator user to indicate a specific value through the input device 52 and cause the control device 30 to set the indicated specific value (hereinafter, "indicated value") as the target charge amount. Thereby, the excavator user can manually input the indicated value through the input device 52 and can manually set the target charge amount of the power storage device 19 to the control device 30. When the setting operation area 4200 is indicated (selected) by the cursor 4100, the operation through the input device 52 becomes effective.

[0146] The setting operation area 4200 includes a target charge amount display unit 4210 and a charge amount indication operation unit 4220.

[0147] The target charge amount display unit 4210 displays the target charge amount (indicated value). In this example, the target charge amount display unit 4210 shows the target charge amount (indicated value) as a bar graph extending in the vertical direction. Also, the target charge amount (indicated value) shown as a bar graph in the target charge amount display unit 4210 is shown as character information. In this example, character information indicating that the charge amount is 80% is shown.

[0148] The charge amount indication operation unit 4220 is configured to be operable by the excavator user through the input device 52. Thereby, the excavator user can operate the charge amount indication operation unit 4220 through the input device 52 to specify the target charge amount (indicated value) to a desired value. In this example, the charge amount indication operation unit 4220 includes upward and downward isosceles triangle icons. Thus, for example, when the setting screen 4000 starts to be displayed, the target charge amount (indicated value) is set to a predetermined initial value, and the excavator user can operate the upward isosceles triangle icon through the input device 52 to increase the target charge amount (indicated value) from the initial value. Also, the excavator user can operate the downward isosceles triangle icon through the input device 52 to decrease the target charge amount (indicated value) from the initial value.

[0149] When the target charge amount (indicated value) is changed according to the operation of the charge amount indication operation unit 4220, the display content of the target charge amount display unit 4210 is changed in synchronization with the target charge amount (indicated value).

[0150] Note that in the setting operation area 4200, instead of or in addition to the charge amount indication operation unit 4220, an indication operation unit may be provided that allows the user to directly input the indicated value as a numerical value through the input device 52.

[0151] The setting operation area 4300 is used for the excavator user to select one of a plurality of options representing a plurality of recommended values of the target charge amount through the input device 52, and to cause the control device 30 to automatically set the recommended value corresponding to the option as the target charge amount. When indicated (selected) by the cursor 4100, the setting operation area 4300 becomes a state where operations through the input device 52 are valid.

[0152] The setting operation area 4300 includes an option icon group 4310 and a next operation date instruction unit 4320.

[0153] The option icon group 4310 includes option icons 4311 to 4314 representing recommended values for a plurality (in this example, four) of target charge amounts.

[0154] The option icon 4311 represents a recommended value for a relatively small target charge amount. In this example, it represents a recommended value corresponding to the case where the amount of work scheduled for the excavator 200 on the work day is relatively small.

[0155] The option icon 4312 represents a recommended value for a relatively medium target charge amount. In this example, it represents a recommended value corresponding to the case where the amount of work scheduled for the excavator 200 on the work day is relatively medium.

[0156] The option icon 4313 represents a recommended value for a relatively large target charge amount. In this example, it represents a recommended value corresponding to the case where the amount of work scheduled for the excavator 200 on the work day is relatively large.

[0157] The option icon 4314 represents a recommended value for the target charge amount corresponding to a full charge (charge amount "100%") of the power storage device 19.

[0158] The excavator user can select any one of the option icons 4311 to 4314 through the input device 52. A cursor 4310C is superimposed on the selected option icons 4311 to 4314. Thereby, the excavator user can visually recognize the currently selected option icon.

[0159] Alternatively, in the setting operation area, only one icon representing the recommended value of the target charge amount may be displayed instead of a plurality of selection icons.

[0160] The next operation date instruction unit 4320 is used for the user to instruct the control device 30 of the next operation date (scheduled work date) of the excavator 200 through the input device 52. The next operation date of the excavator 200 input through the input device 52 is displayed on the next operation date instruction unit 4320. Thereby, the control device 30 can calculate the recommended value corresponding to each of the selection icons 4311 to 4313 in consideration of information (for example, weather forecast and season) related to the next operation date as described later. In this example, it is displayed on the next operation date instruction unit 4320 that the next operation date of the excavator 200 is January 1, 2020.

[0161] In the information presentation area 4400, information related to the currently instructed target charge amount (instruction value or recommended value corresponding to the selected selection icon) is presented.

[0162] In the information presentation area 4400, for example, the estimated operation time is displayed. The estimated operation time represents an estimated value of the operation time of the excavator 200 when the power storage device 19 is charged up to the currently instructed target charge amount (instruction value or recommended value). Thereby, the excavator user can grasp to some extent the operation time of the excavator 200 when the power storage device 19 is charged up to the currently instructed target charge amount. Therefore, the excavator user can, for example, adjust the target charge amount (instruction value) or change the selection icon to be selected from among the selection icons 4311 to 4314 while checking the display content of the information presentation area 4400 in order to obtain the required operation time.

[0163] In addition, in the information display area 4400, for example, the estimated charging time is displayed. The estimated charging time represents an estimated value of the time required to charge the power storage device 19 up to the currently instructed target charge amount (instruction value or recommended value). Thereby, the excavator user can grasp the approximate time required to charge the power storage device 19 up to the currently instructed target charge amount. Therefore, the excavator user can, for example, compare the remaining time until the start of the next operation with the estimated charging time, adjust the target charge amount (instruction value), or change the selection icon selected from the selection icons 4311 to 4314. The estimated charging time in the information display area 4400 may be the estimated charging time in either one of the cases of charging in the normal charging mode and charging in the rapid charging mode, which are preset. Also, in the information display area 4400, the estimated charging times for both the case of charging in the normal charging mode and the case of charging in the rapid charging mode may be displayed.

[0164] In addition, in the information display area 4400, in the case of the automatic setting mode, not only the currently instructed selection but also the estimated operation time and the estimated charging time corresponding to other selections may be displayed. Also, in the information display area 4400, either one of the estimated operation time and the estimated charging time may be displayed. Also, in the information display area 4400, instead of or in addition to the estimated operation time and the estimated charging time, other information (for example, the currently set charging mode, etc.) may be displayed.

[0165] The display content change area 4500 is used for the excavator user to change the display content of the display device 50A from the setting screen 4000 related to the target charge amount to a screen of other content through the input device 52. The display content change area 4500 includes a home screen transition icon 4510 and a target charge amount confirmation icon 4520.

[0166] The home screen transition icon 4510 is used to discard the content related to the target charge amount indicated on the setting screen 4000 for the target charge amount by the excavator user through the input device 52, and to shift the display content of the display device 50A to a predetermined home screen. Thereby, the excavator user can operate the home screen transition icon 4510 through the input device 52, discard the content indicated on the current setting screen 4000 for the target charge amount, and cause the control device 30 to shift the display content of the display device 50A to the home screen.

[0167] The target charge amount confirmation icon 4520 is used to confirm the content related to the target charge amount indicated on the setting screen 4000 for the target charge amount by the excavator user through the input device 52, and to shift the display content of the display device 50A to the home screen. Thereby, the excavator user can operate the target charge amount confirmation icon 4520 through the input device 52, and cause the control device 30 to set the target charge amount to the indicated value indicated on the current setting screen 4000 or the recommended value corresponding to the selection icon.

[0168] Further, the screen display processing unit 3001 causes, for example, a confirmation screen regarding the progress of deterioration of the power storage device 19 to be displayed on the display device 50A.

[0169] In the target charge amount setting function, the excavator user can cause the control device 30 to set the target charge amount so that charging is completed in a state where the charge amount is lower than the fully charged state. Therefore, by the target charge amount setting function, the charge amount at the completion of charging of the power storage device 19 is limited to be smaller than the fully charged state, so that deterioration of the power storage device 19 can be suppressed. Thus, through the confirmation screen, the excavator user can confirm the progress of the deterioration degree of the power storage device 19 by the target charge amount setting function, for example, how much the deterioration of the power storage device 19 is suppressed. When the screen display processing unit 3001 receives a predetermined input for causing a confirmation screen regarding the progress of deterioration of the power storage device 19, which is input from the excavator user through the input device 52, the screen display processing unit 3001 may shift the display content of the display device 50A to the confirmation screen regarding the progress of deterioration of the power storage device 19.

[0170] For example, FIG. 5 is a diagram showing an example of a confirmation screen (confirmation screen 5000) regarding the progress of deterioration of the power storage device 19.

[0171] As shown in FIG. 5, the confirmation screen 5000 includes a display area 5100 and a home screen transition icon 5200.

[0172] In the display area 5100, image information representing the progress of deterioration of the power storage device 19, including the effect of the target charge amount setting function, is displayed. Specifically, in the display area 5100, a graph (solid line) representing the transition of the degree of deterioration of the power storage device 19 up to the present is displayed. Also, in the display area 5100, graphs (dotted line and dashed-dotted line) representing the transition of the degree of deterioration of the power storage device 19 in the case of assuming that charging is performed each time until full charge, and in the case of assuming that a target charge amount lower than full charge is set and charged each time by the target charge amount setting function are displayed. In particular, the graph representing the transition of the degree of deterioration of the power storage device 19 in the case of assuming that a target charge amount lower than full charge is set and charged each time by the target charge amount setting function corresponds to the best case when charging is completed within the range of the charge amount that most suppresses the progress of deterioration of the power storage device 19. That is, in the display area 5100, the actual transition of the degree of deterioration of the power storage device 19 and the predicted transition of the degree of deterioration of the power storage device 19 in the case of assuming that charging is completed at a charge amount at which deterioration relatively easily progresses (full charge) and a charge amount at which deterioration relatively hardly progresses (a target charge amount lower than full charge) are displayed. Thereby, the user can confirm the transition of the degree of deterioration of the power storage device 19 through the display area 5100. Also, the user can confirm whether the transition of the degree of deterioration of the power storage device 19 is relatively progressing or suppressed by comparing with the predicted transition of the degree of deterioration of the power storage device 19 in the case of assuming that charging is completed at a charge amount at which deterioration relatively easily progresses and a charge amount at which deterioration relatively hardly progresses.

[0173] When charging is performed each time until full charge, the deterioration of the power storage device 19 progresses relatively quickly. Therefore, when assuming that charging is performed each time until full charge, the degree of deterioration of the power storage device 19 increases with a relatively large gradient and becomes relatively large.

[0174] On the other hand, when charging is completed each time at a charge level lower than full charge, the deterioration of the power storage device 19 progresses relatively slowly. Therefore, when it is assumed that the target charge level is set and charged each time by the target charge level setting function, the degree of deterioration of the power storage device 19 in the best case increases with a relatively small gradient and becomes relatively small.

[0175] In this example, immediately after the factory shipment of the excavator 200, although the power storage device 19 was charged to full charge each time, the use of the target charge level setting function was started. Recently, the set target charge level has been set within the range where deterioration is most suppressed. Therefore, it can be seen that the degree of deterioration of the power storage device 19 is gradually suppressed in terms of its progress speed and is suppressed to a certain extent lower than the case where it is assumed that it is charged to full charge each time. Therefore, the excavator user can grasp the state in which the progress of the deterioration of the power storage device 19 is suppressed by using the target charge level setting function by checking the graph in the display area 5100.

[0176] The description of the home screen transition icon 5200 having the same function as the home screen transition icon 4510 in FIG. 4 is omitted.

[0177] In addition, the screen display processing unit 3001 causes, for example, a confirmation screen regarding the charging record and charging status of the power storage device 19 to be displayed on the display device 50A. When the screen display processing unit 3001 receives a predetermined input input from the excavator user through the input device 52, the display content of the display device 50A may be shifted to a confirmation screen regarding the charging record and charging status of the power storage device 19.

[0178] For example, FIG. 6 is a diagram showing an example of a confirmation screen (confirmation screen 6000) regarding the charging record and charging status of the power storage device 19. It is a diagram showing a confirmation screen 6000 of a log regarding charging based on the target charge level setting function of the power storage device 19.

[0179] The confirmation screen 6000 includes a display area 6100 and a home screen transition icon 6200.

[0180] In the display area 6100, logs regarding each charge of the power storage device 19 for which the target charge amount has been set and implemented by the target charge amount setting function of the power storage device 19 are displayed in tabular form.

[0181] In the log, for each charge for which the target charge amount has been set and implemented by the target charge amount setting function of the power storage device 19, "Date", "Charging time zone", "Charging mode", "Setting mode", "Target charge amount", "Previous discharge amount", and "Degree of degradation" are displayed.

[0182] "Date" represents the date of the day when charging was implemented by setting the target charge amount by the target charge amount setting function of the power storage device 19.

[0183] "Charging time zone" represents the time zone when charging was implemented by setting the target charge amount by the target charge amount setting function of the power storage device 19. Specifically, in the item of "Charging time zone", the start time and end time of charging are displayed. In the case of the log of a charge that has been completed in the past, both the start time and the end time are displayed. On the other hand, in the case of the log of a charge that is currently being implemented, only the start time is displayed, and in the place of the end time, the character information "Charging" is displayed.

[0184] In addition, the log of the charge before start may be displayed on the confirmation screen 6000. In this case, character information indicating that it is before start may be displayed in the "Charging time zone".

[0185] "Charging mode" represents the charging mode when charging was implemented by setting the target charge amount by the target charge amount setting function of the power storage device 19, that is, the distinction between normal charging and rapid charging.

[0186] "Charging mode" represents the charging mode when charging was implemented by setting the target charge amount by the target charge amount setting function of the power storage device 19, that is, the distinction between normal charging and rapid charging.

[0187] "Setting mode" refers to the setting mode when the target charge amount is set by the target charge amount setting function of the power storage device 19, that is, it represents the distinction between the manual setting mode or the automatic setting mode.

[0188] "Target charge amount" represents the set value of the target charge amount set by the target charge amount setting function of the power storage device 19.

[0189] "Previous discharge amount" represents the actual value of the discharge amount of the power storage device 19 from the previous charge of the power storage device 19 until the time when the target charge amount is set by the target charge amount setting function of the power storage device 19 and charging starts.

[0190] "Degree of deterioration" represents the degree of deterioration of the power storage device 19 at the time when the target charge amount is set by the target charge amount setting function of the power storage device 19 and charging starts.

[0191] The description of the home screen transition icon 6200 having the same function as the home screen transition icon 4510 in FIG. 4 is omitted.

[0192] The excavator user can grasp the past performance of the power storage device 19 being charged after the target charge amount is set by the target charge amount setting function by checking the confirmation screen 6000. Also, the excavator user can grasp information regarding the ongoing or planned charging after the target charge amount is set by the target charge amount setting function by checking the confirmation screen 6000. Therefore, the control device 30 can improve the convenience for the excavator user.

[0193] Returning to FIG. 3, the degree of deterioration calculation unit 3002 calculates the degree of deterioration of the power storage device 19 based on the detection data such as the voltage and current of the power storage device 19 taken in from the power storage device 19. The degree of deterioration calculation unit 3002 calculates (estimates) the degree of deterioration of the power storage device 19 at a predetermined timing such as during the initial processing of the control device 30 when the excavator 200 is started or during the end processing when the excavator 200 stops. The data regarding the degree of deterioration calculated by the degree of deterioration calculation unit 3002 (hereinafter, "degree of deterioration calculation data") is stored in the storage unit 3004.

[0194] Based on the detection data such as the voltage and current of the power storage device 19 taken in from the power storage device 19, the actual discharge amount calculation unit 3003 calculates the actual value of the discharge amount of the power storage device 19 within a predetermined period. The actual discharge amount calculation unit 3003 may calculate, for example, the actual value of the discharge amount of the power storage device 19 from the start (for example, turning on the key switch) to the stop (for example, turning off the key switch) of the excavator 200. Further, the actual discharge amount calculation unit 3003 may calculate, for example, the actual value of the discharge amount of the power storage device 19 on a daily basis. The data regarding the actual value of the discharge amount of the power storage device 19 calculated by the actual discharge amount calculation unit 3003 (hereinafter, "actual discharge amount value data") is stored in the storage unit 3004.

[0195] The storage unit 3004 stores data regarding the target charge amount of the power storage device 19. The storage unit 3004 stores, for example, the degradation degree calculation data calculated by the degradation degree calculation unit 3002 and the actual discharge amount value data calculated by the actual discharge amount calculation unit 3003. Further, the storage unit 3004 stores various data used by the recommended value calculation unit 3005 described later to calculate the recommended value.

[0196] The recommended value calculation unit 3005 calculates the recommended value of the target charge amount in the automatic setting mode.

[0197] The recommended value calculation unit 3005 may calculate only one recommended value of the target charge amount based on, for example, information regarding the past operation results of the excavator 200 and information regarding the content (setup) of the next work of the excavator 200. In this case, the information regarding the setup of the next work may be in a form input from the excavator user through the input device 52, or may be in a form input (received) from the management device 300 or the like through the communication device 60.

[0198] Further, when a plurality of options regarding the target charge amount are prepared as in the case of the setting screen 4000 in FIG. 4, for example, the recommended value calculation unit 3005 calculates the recommended value of the target charge amount for each of the plurality of options.

[0199] The recommended value of the target charge amount may be calculated based on, for example, the actual discharge amount data of the power storage device 19. The recommended value calculation unit 3005 statistically analyzes, for example, the discharge amount (i.e., the work amount of the excavator 200) of the power storage device 19 for a predetermined charging cycle (e.g., daily) based on the history of the actual discharge amount data. Then, the recommended value calculation unit 3005 may calculate one recommended value of the target charge amount in consideration of the work amount (discharge amount) in the most recent predetermined period (e.g., several days). Further, the recommended value calculation unit 3005 may calculate one recommended value of the target charge amount according to the required work amount based on information regarding the setup for the next work of the excavator 200. Also, when a plurality of options regarding the target charge amount are prepared, the recommended value calculation unit 3005 may calculate recommended values for cases where the work amount of the excavator 200 for each charging cycle is relatively large, average, and relatively small respectively, based on the analysis result of the work amount of the excavator 200 for each charging cycle.

[0200] Further, the recommended value of the target charge amount may be calculated based on, for example, data regarding the date and time when the next work by the excavator 200 is to be performed. The data regarding the date and time when the next work by the excavator 200 is to be performed includes, for example, data corresponding to the content of the next operation date instruction unit 4320 of the setting screen 4000 in FIG. 4. The recommended value calculation unit 3005 recognizes, for example, the season and the predicted weather (e.g., clear, cloudy, rainy, snowy, etc., temperature, humidity, etc.) at that date and time based on the data regarding the date and time when the next work is to be performed, and predicts the operating state of the air conditioner 80 at that date and time. Then, the recommended value calculation unit 3005 may correct a default single recommended value or a plurality of recommended values (e.g., a relatively large recommended value, a medium recommended value, and a relatively small recommended value) prepared in advance in consideration of the current consumption current based on the predicted operating state of the air conditioner 80.

[0201] Further, the recommended value of the target charge amount may be calculated, for example, based on data related to the environmental conditions at the work site of the excavator 200. The environmental conditions at the work site of the excavator 200 may include, for example, the degree of undulation of the work site and the work content at the work site. Data related to the environmental conditions at the work site of the excavator 200 may be acquired, for example, by the surrounding information acquisition device 40. Further, data related to the environmental conditions at the work site of the excavator 200 may be distributed to the excavator 200 from an external device such as the management device 300. The recommended value calculation unit 3005 determines, for example, whether the energy consumption at the next work site of the excavator 200 is relatively high or low based on data related to the environmental conditions at the work site of the excavator 200, or determines the degree of high or low energy consumption with respect to a predetermined standard. Then, the recommended value calculation unit 3005 may correct one or a plurality of default recommended values prepared in advance in consideration of the degree of high or low energy consumption with respect to a predetermined standard.

[0202] Further, the recommended value of the target charge amount may be calculated, for example, based on data related to the position of the excavator 200. Data related to the position information of the excavator 200 is acquired, for example, by a positioning device (for example, a GNSS (Global Navigation Satellite System) module) mounted on the excavator 200. Further, for example, based on the signal exchange between the communication device 60 and the nearest base station, data related to the position of the excavator 200 with reference to this base station may be acquired. The recommended value calculation unit 3005 may recognize the location of the work site based on data related to the position of the excavator 200, for example, and determine the environmental conditions (season, temperature, humidity, altitude, whether it is a mountainous area or an urban area, etc.) of that location. Then, the recommended value calculation unit 3005 may correct one or a plurality of default recommended values prepared in advance in consideration of the degree of high or low energy consumption with respect to a predetermined standard in the same manner as when using data related to the environmental conditions of the excavator 200.

[0203] Further, the recommended value of the target charge amount for each of the plurality of options may be calculated based on, for example, data related to the degradation state of the power storage device 19 (e.g., degradation degree data). The recommended value calculation unit 3005 may correct, for example, one default recommended value or a plurality of recommended values prepared in advance in consideration of the degradation degree of the power storage device 19.

[0204] Further, the recommended value of the target charge amount may be calculated based on, for example, two or more types of data among the above-described plurality of types of data. The recommended value calculation unit 3005 may correct, for example, one default recommended value or a plurality of recommended values prepared in advance based on two or more types of data. Further, for example, when the work amount of the excavator 200 for each charge cycle calculated based on the discharge amount actual value data of the power storage device 19 is relatively large, average, and relatively small, the recommended value calculation unit 3005 may correct the recommended value for each case with other types of data.

[0205] Further, the recommended value of the target charge amount may be calculated based on at least one of the upper limit value and the lower limit value of the charge amount of the power storage device 19 defined in consideration of the degradation of the power storage device 19. The recommended value of the target charge amount is set, for example, to be equal to or less than the upper limit value. Further, the recommended value of the target charge amount is calculated, for example, so as not to fall below the above-described lower limit value at the end of the operation of the excavator 200 next time. This is because when the charge amount of the power storage device 19 is maintained in a state close to full charge or in a very low state, degradation may easily progress. The upper limit value is set to a value smaller than the value corresponding to full charge (e.g., 100%), for example, 80%. Further, the lower limit value is set to a value larger than the value corresponding to full discharge (e.g., 0%), for example, 40%.

[0206] The operation time estimation unit 3006 estimates the operation time of the excavator 200 when the power storage device 19 is charged up to the set target charge amount, and obtains (calculates) the estimated operation time. For example, in the case of the manual setting mode, the operation time estimation unit 3006 may calculate the estimated operation time when the power storage device 19 is charged up to the content (indicated value) instructed in the target charge amount display unit 4110 of the setting screen 4000. Further, for example, in the case of the automatic setting mode, the operation time estimation unit 3006 may calculate the estimated operation time when the power storage device 19 is charged up to the recommended value corresponding to the selected option icon among the option icon group 4310 of the setting screen 4000. Thereby, the screen display processing unit 3001 can display the estimated operation time on the setting screen regarding the target charge amount of the power storage device 19 and notify the excavator user (see, for example, the information presentation area 4400 in FIG. 4).

[0207] The target charge amount setting unit 3007 sets the target charge amount of the power storage device 19 according to a predetermined input received by the input device 52. For example, on the setting screen 4000, when the target charge amount confirmation icon 4520 is operated through the input device 52, the target charge amount setting unit 3007 may set the content (indicated value or recommended value) indicated on the setting screen 4000 as the target charge amount of the power storage device 19. Thereby, the control device 30 can set the target charge amount of the power storage device 19 according to a predetermined input of the excavator user through the input device 52.

[0208] Further, as will be described later, the target charge amount setting unit 3007 may set the target charge amount of the power storage device 19 based on the setting content regarding the target charge amount included in the request signal received from the management device 300 or the support device 400 through the communication device 60. Thereby, as will be described later, the target charge amount setting unit 3007 can reflect the target charge amount set by the management device 300 or the support device 400 as the setting content regarding the target charge amount in the excavator 200.

[0209] Based on the detection data taken in from the power storage device 19, the additional charge calculation unit 3008 calculates the current charge amount of the power storage device 19, and calculates the charge amount to be added (hereinafter, "additional charge amount") to the set target charge amount when charging starts from the current state of the power storage device 19.

[0210] The charging time estimation unit 3009 estimates the time required to charge the power storage device 19 up to the set target charge amount and calculates the estimated charging time. For example, in the case of the manual setting mode, the charging time estimation unit 3009 may calculate the estimated charging time when the power storage device 19 is charged up to the content (indicated value) instructed in the target charge amount display unit 4110 of the setting screen 4000. Further, for example, in the case of the automatic setting mode, the charging time estimation unit 3009 may calculate the estimated charging time when the power storage device 19 is charged up to the recommended value corresponding to the selected option icon among the option icon group 4310 of the setting screen 4000. Further, in the case of the automatic setting mode, the charging time estimation unit 3009 may calculate the estimated charging time when the power storage device 19 is charged up to the recommended value corresponding to each of all the option icons 4311 to 4314 including the selected option icon among the option icon group 4310 of the setting screen 4000. Thereby, the screen display processing unit 3001 can display the estimated charging time on the target charge amount setting screen and notify the excavator user (see, for example, the information presentation area 4400 in FIG. 4). Further, for example, the charging time estimation unit 3009 may calculate the estimated charging time in at least one of the case of charging in the normal charging mode and the case of charging in the rapid charging mode. Thereby, the screen display processing unit 3001 can display the estimated charging time on the target charge amount setting screen in a form that distinguishes between the case where the power storage device 19 is charged in the normal charging mode and the case where it is charged in the rapid charging mode, and notify the excavator user.

[0211] The charging control unit 3010 performs control related to charging the power storage device 19 with power from an external commercial power source through the in-vehicle charger 130, for example, when a charging cable is connected to the charging port 132. The charging control unit 3010 controls the in-vehicle charger 130, for example, so that the charged amount of the power storage device 19 becomes the target charged amount set by the target charged amount setting unit 3007, and causes the power storage device 19 to be charged.

[0212] The data transmission unit 3011 transmits data related to the target charged amount of the power storage device 19, such as the degradation degree data and the actual discharge amount data acquired by the excavator 200 and stored in the storage unit 3004, to the management device 300 through the communication device 60. Thereby, the management device 300 can acquire data related to the target charged amount of the power storage device 19. The data transmission unit 3011 may transmit, for example, the updated data (newly added data) to the management device 300 every time the content of the storage unit 3004 is updated. Further, the data transmission unit 3011 may transmit the updated data from the previous data transmission to the management device 300 when the excavator 200 is started or stopped.

[0213] The notification unit 3012 transmits a notification signal representing a notification related to charging of the power storage device 19 to the management device 300 through the communication device 60.

[0214] For example, when the setting of the target charged amount of the power storage device 19 is completed based on a request signal from the management device 300, the notification unit 3012 transmits, through the communication device 60, a notification signal indicating that the setting of the target charged amount based on the request signal has been completed to the management device 300. Thereby, the management device 300 can grasp that the setting of the target charged amount has been reflected on the excavator 200 side with respect to the request signal.

[0215] Further, for example, when the charging of the power storage device 19 based on the target charge amount set by the target charge amount setting function is completed, the notification unit 3012 transmits a notification signal indicating that the charging of the power storage device 19 has been completed to the management device 300. Thereby, the management device 300 can grasp that the charging up to the target charge amount of the power storage device 19 of the excavator 200 has been completed.

[0216] The log recording unit 3013 records a log related to the charging based on the target charge amount setting function of the power storage device 19 in the storage unit 3004. Specifically, the log recording unit 3013 records various information generated in the process from when the target charge amount is set by the target charge amount setting function of the power storage device 19 until the charging of the power storage device 19 is completed in the storage unit 3004. For each time the target charge amount is set by the target charge amount setting function of the power storage device 19 and the charging of the power storage device 19 is performed, a record corresponding to the log is created, and the created record is stored in the storage unit 3004. The record stores, for example, "date", "charging time zone", "charging mode", "setting mode", "target charge amount", "previous discharge amount", and "degree of degradation" etc. displayed in the display area 6100 of the above-described confirmation screen 6000. Thereby, a record group of logs related to the charging based on the target charge amount setting function of the power storage device 19, that is, a database is constructed in the storage unit 3004. Therefore, the screen display processing unit 3001 can cause the confirmation screen 6000 to be displayed on the display device 50A by referring to the database of the logs related to the charging based on the target charge amount setting function of the power storage device 19 stored in the storage unit 3004.

[0217] As described above, in the present embodiment, the excavator 200 (control device 30) sets a target value (target charge amount) of the charge amount of the power storage device 19 by the power supplied from the external power source in response to a predetermined input received by the input device 52.

[0218] As a result, the excavator 200 can limit the amount of charge after charging when the power storage device 19 is charged with power from an external power source to a target charge amount instructed by the excavator user in response to an input from the excavator user. Therefore, the excavator user can, for example, set the target charge amount in the excavator 200 according to the content of the next work, etc., and avoid a situation where there is excess power at the end of the work or the charge amount of the power storage device 19 is insufficient until the end of the work. Thus, the excavator 200 can charge the power storage device 19 that can be charged with power from an external power source more appropriately.

[0219] Further, in the present embodiment, the input device 52 may directly receive an input from a user inside the cabin 10 or around the excavator 200.

[0220] As a result, the control device 30 can set the target charge amount of the power storage device 19 according to a direct input to the excavator 200.

[0221] Further, in the present embodiment, the communication device 60 may be configured to be able to receive a request signal corresponding to an input from a user from a predetermined external device (for example, the management device 300 or the support device 400).

[0222] As a result, the control device 30 can set the target charge amount of the power storage device 19 according to an indirect input from an external device.

[0223] Further, in the present embodiment, the control device 30 may set a specific value (instruction value) as the target charge amount according to a predetermined input that specifies a specific value.

[0224] As a result, the excavator user can specifically set a specific value as the target charge amount for the excavator 200 in the form of instructing the excavator 200 to set a specific value as the target charge amount.

[0225] Further, in the present embodiment, the display device 50A may display a setting screen 4000 that can be operated by the user according to an input from the input device 52. Then, on the setting screen 4000, a bar graph of the target charge amount display unit 4210, which is a rod-shaped image whose one end is fixed and whose other end position corresponding to a specific value can be changed by an operation from the input device 52, may be displayed.

[0226] Thus, the excavator user can specifically instruct a specific value as the target charge amount and cause the control device 30 to set it by operating the bar graph on the setting screen 4000.

[0227] Further, in the present embodiment, the control device 30 may set a predetermined value (recommended value) corresponding to one option as the target charge amount in response to a predetermined input for selecting one option from a plurality of predetermined options.

[0228] Thus, the excavator user can specifically cause the recommended value corresponding to one option to be set as the target charge amount for the excavator 200 by selecting one desired option from a plurality of automatically prepared options.

[0229] Further, in the present embodiment, the display device 50A may display a setting screen 4000 that can be operated by the user according to an input from the input device 52. Then, on the setting screen 4000, a plurality of option icons 4311 to 4313 corresponding to a plurality of options that can be selected by an operation from the input device 52 may be displayed.

[0230] Thus, the excavator user can specifically instruct the recommended value corresponding to one option as the target charge amount and cause the control device 30 to set it by selecting any one of the option icons 4311 to 4313 on the setting screen 4000.

[0231] In addition, in the present embodiment, the control device 30 may determine a recommended value of the target charge amount based on at least one of data related to the actual discharge amount of the power storage device 19, data related to the date and time when the next work by the excavator 200 is to be performed, data related to the environmental conditions at the work site of the excavator 200, data related to the position of the excavator 200, and data related to the deterioration state of the power storage device 19.

[0232] Accordingly, specifically, the excavator 200 can determine (calculate) the recommended value for each of the plurality of options.

[0233] In addition, in the present embodiment, the recommended value may be defined in at least one of a range such that it is equal to or lower than a predetermined upper limit value lower than the charge amount corresponding to the full charge of the power storage device 19, and a range such that a charge amount equal to or higher than a predetermined lower limit value remains in the power storage device 19 at the end of the work of the excavator 200.

[0234] Accordingly, the excavator 200 can determine the recommended value of the target charge amount in consideration of the deterioration state of the power storage device 19.

[0235] In addition, in the present embodiment, the output device 50 (display device 50A) may output to the excavator user at least one estimated value of the time required for charging (estimated charging time required) when the power storage device 19 is charged up to the target charge amount and the operable time of the excavator 200 (estimated operation time).

[0236] Accordingly, the excavator user can give an instruction regarding the target charge amount to the excavator 200 through the input device 52 while checking the estimated charging time required and the estimated operation time.

[0237] In addition, in the present embodiment, a log related to the target charge amount set by the control device 30 (target charge amount setting unit 3007) may be stored in the storage unit 3004. Then, the display device 50A may display a log related to a past charge that has already been completed or the current charge being performed under the control of the control device 30 (screen display processing unit 3001).

[0238] As a result, the excavator user can, retrospectively, check the setting details of the target charge amount setting function that has been completed in the past, or check the setting details of the target charge amount setting function for the currently ongoing charging.

[0239] In addition, the control device 30 may be configured to provide a voice assistant to the excavator user through, for example, the sound output device 50B, and enable the excavator user to set the target charge amount of the power storage device 19 through an interactive interface.

[0240] <Configuration regarding the target charge amount setting function of the management device> As shown in FIG. 3, the control device 310 includes a screen display processing unit 3101, a storage unit 3102, a recommended value calculation unit 3103, an operation time estimation unit 3104, a target charge amount setting request unit 3105, an additional charge amount calculation unit 3106, a charging time estimation unit 3107, a notification unit 3108, and a log recording unit 3109.

[0241] The screen display processing unit 3101 causes the output device 330 (display device) to display a screen regarding the target charge amount setting function.

[0242] The screen display processing unit 3101 causes, for example, the output device 330 (display device) to display a setting screen for the management device user to give an instruction regarding the target charge amount and cause the control device 310 to set the target charge amount. When the screen display processing unit 3101 receives a predetermined input from the management device user through the input device 340, the screen display processing unit 3101 may shift the display content of the output device 330 (display device) to the target charge amount setting screen. The screen display processing unit 3101 may cause, for example, the output device 330 (display device) to display a setting screen (setting screen 4000) regarding the target charge amount of the power storage device 19 similar to FIG. 4 described above. As a result, the management device user can, by operating the target charge amount setting screen using the input device 340, cause the excavator 200 (control device 30) to set the target charge amount via the control device 310.

[0243] In addition, the screen display processing unit 3101 causes the output device 330 (display device) to display a confirmation screen regarding the progress of deterioration of the power storage device 19, for example. When a predetermined input is received from the management device user through the input device 340, the screen display processing unit 3101 may shift the display content of the output device 330 (display device) to a confirmation screen regarding the progress of deterioration of the power storage device 19. The screen display processing unit 3101 may cause the output device 330 (display device) to display, for example, a confirmation screen (confirmation screen 5000) similar to FIG. 5 described above. As a result, the management device user can confirm, through the confirmation screen regarding the progress of deterioration of the power storage device 19, that the progress of the degree of deterioration of the power storage device 19 is suppressed by the target charge amount setting function.

[0244] In addition, the screen display processing unit 3101 causes the output device 330 (display device) to display a confirmation screen regarding the charging performance and charging status of the power storage device 19, specifically, a confirmation screen of a log regarding charging based on the target charge amount setting function of the power storage device 19. When a predetermined input is received from the management device user through the input device 340, the screen display processing unit 3101 may shift the display content of the output device 330 (display device) to a confirmation screen of a log regarding charging based on the target charge amount setting function of the power storage device 19. The screen display processing unit 3101 may cause the output device 330 (display device) to display, for example, a confirmation screen (confirmation screen 5000) similar to FIG. 6 described above. As a result, the management device user can grasp the past performance of charging the power storage device 19 after the target charge amount is set by the target charge amount setting function through the confirmation screen of the log based on the target charge amount setting function of the power storage device 19. In addition, the management device user can grasp information regarding charging that is in progress or planned to be carried out after the target charge amount is set by the target charge amount setting function through the confirmation screen of the log based on the target charge amount setting function of the power storage device 19.

[0245] Further, the screen display processing unit 3101 may cause the output device 330 (display device) to display a setting screen or a confirmation screen for each of the plurality of excavators 200. In this case, the screen display processing unit 3101 may cause the output device 330 (display device) to display a screen (hereinafter, "excavator selection screen") for the management device user to select one excavator 200 as the target charge amount setting target from among the plurality of excavators 200. Then, on the excavator selection screen, the screen display processing unit 3101 may cause the output device 330 (display device) to display a setting screen regarding the target charge amount of the power storage device 19 for one excavator 200 selected by a predetermined input from the management device user through the input device 340. Similarly, the screen display processing unit 3101 may cause the output device 330 (display device) to display an excavator selection screen for the management device user to select one excavator 200 as the confirmation target of the progress of deterioration of the power storage device 19 from among the plurality of excavators 200. Then, on the excavator selection screen, the screen display processing unit 3101 may cause the output device 330 (display device) to display a confirmation screen regarding the progress of deterioration of the power storage device 19 for one excavator 200 selected by a predetermined input from the management device user through the input device 340. Similarly, the screen display processing unit 3101 may cause the output device 330 (display device) to display an excavator selection screen for the management device user to select one excavator 200 as the confirmation target of the charging performance and charging status of the power storage device 19 from among the plurality of excavators 200. Then, on the excavator selection screen, the screen display processing unit 3101 may cause the output device 330 (display device) to display a confirmation screen regarding the charging performance and charging status of the power storage device 19, that is, a confirmation screen regarding the charging log based on the target charge amount setting function of the power storage device 19, for one excavator 200 selected by a predetermined input from the management device user through the input device 340. Thereby, the management device user can set the target charge amount for each of the plurality of excavators 200 or confirm the progress of deterioration, charging performance, charging status, etc. of the power storage device 19 for each of the plurality of excavators 200 via the control device 310.

[0246] The screen display processing unit 3101 may cause the support device 400 (output device 430) to display a screen related to the target charge amount setting function based on mutual communication with the support device 400 through the communication device 320. Details will be described later.

[0247] The storage unit 3102 stores data related to the target charge amount of the power storage device 19 received from the excavator 200 by the communication device 320.

[0248] The recommended value calculation unit 3103 calculates a recommended value for the target charge amount in the automatic setting mode in the same manner as the recommended value calculation unit 3005 of the excavator 200. Specifically, the recommended value calculation unit 3103 may calculate a recommended value for the target charge amount using data received from the excavator 200 and stored in the storage unit 3102.

[0249] The operation time estimation unit 3104 estimates the operation time of the excavator 200 when the power storage device 19 is charged up to the set target charge amount, and obtains (calculates) the estimated operation time. For example, in the case of the manual setting mode, the operation time estimation unit 3104 may calculate the estimated operation time when the power storage device 19 is charged up to the content (indicated value) instructed on the target charge amount setting screen, in the same manner as the operation time estimation unit 3006. Also, for example, in the case of the automatic setting mode, the operation time estimation unit 3104 may calculate the estimated operation time when the power storage device 19 is charged up to the recommended value corresponding to the selected option icon among the option icon group on the target charge amount setting screen, in the same manner as the operation time estimation unit 3006. Thereby, the screen display processing unit 3101 can display the estimated operation time on the target charge amount setting screen and notify the management device user.

[0250] The target charge amount setting request unit 3105 sets the target charge amount of the power storage device 19 in response to a predetermined input received by the input device 340, and transmits a signal (hereinafter, "request signal") including the setting content to the excavator 200 through the communication device 320. For example, when an icon corresponding to the target charge amount determination icon 4520 in FIG. 4 is operated through the input device 340 on the target charge amount setting screen, the target charge amount setting request unit 3105 sets the instruction content (instruction value or recommended value) of the target charge amount setting screen as the target charge amount of the power storage device 19. Then, the target charge amount setting request unit 3105 may transmit a request signal to the excavator 200 requesting to set the setting content as the target charge amount of the power storage device 19. Thereby, the control device 310 can cause the target charge amount of the power storage device 19 to be set in the excavator 200 (control device 30) in response to a predetermined input of the management device user through the input device 340.

[0251] The additional charge amount calculation unit 3106 calculates the current charge amount of the power storage device 19 and calculates the additional charge amount with respect to the set target charge amount when charging starts from the current state of the power storage device 19, similar to the case of the additional charge amount calculation unit 3008. Specifically, the additional charge amount calculation unit 3106 may calculate the current charge amount of the power storage device 19 based on the detection data of the power storage device 19 received from the excavator 200 and stored in the storage unit 3102, and calculate the additional charge amount based on the calculated current charge amount of the power storage device 19.

[0252] The charging time estimation unit 3107 estimates the time required to charge the power storage device 19 up to the set target charge amount, and calculates the estimated charging time required, in the same manner as in the case of the charging time estimation unit 3009. For example, in the case of the manual setting mode, the charging time estimation unit 3107 may calculate the estimated charging time required when the power storage device 19 is charged up to the content (indicated value) indicated on the target charge amount setting screen. Also, for example, in the case of the automatic setting mode, the charging time estimation unit 3107 may calculate the estimated charging time required when the power storage device 19 is charged up to the recommended value corresponding to the selected option icon among the option icon group on the target charge amount setting screen. Further, in the case of the automatic setting mode, the charging time estimation unit 3107 may calculate the estimated charging time required when the power storage device 19 is charged up to the recommended value corresponding to each of all the option icons including the selected option icon among the option icon group on the target charge amount setting screen. Thereby, the screen display processing unit 3101 can display the estimated charging time required on the target charge amount setting screen and notify the management device user. Also, for example, the charging time estimation unit 3107 may calculate the estimated charging time required for at least one of the cases of charging in the normal charging mode and charging in the rapid charging mode. Thereby, the screen display processing unit 3101 can display the estimated charging time required on the target charge amount setting screen in a form that distinguishes between the case where the power storage device 19 is charged in the normal charging mode and the case where it is charged in the rapid charging mode, and notify the management device user.

[0253] The notification unit 3108 notifies the user about the target charge amount setting function of the power storage device 19. The user is an excavator user, a management device user, or a support device user who utilizes the target charge amount setting function of the power storage device 19 through the excavator 200, the management device 300, or the support device 400. Specifically, the notification unit 3108 may send an email regarding the target charge amount setting function of the power storage device 19 to the email address of the pre-registered user. Also, the notification unit 3108 may send a notification regarding the target charge amount setting function of the power storage device 19 to the account of the pre-registered user on a social networking service (SNS). Further, the notification unit 3108 may send a push notification regarding the target charge amount setting function of the power storage device 19 to the terminal device (e.g., the support device 400) of the pre-registered user.

[0254] For example, when the notification unit 3108 receives, through the communication device 320, a notification signal indicating that the setting of the target charge amount of the power storage device 19 based on a request signal has been completed from the excavator 200, the notification unit 3108 may notify the user who utilizes the target charge amount setting function of the power storage device 19 that the setting of the target charge amount has been completed. In this case, the notification unit 3108 may also notify the setting details (such as the target charge amount, the setting mode, and the charging mode).

[0255] Also, for example, when the notification unit 3108 receives, through the communication device 320, a notification signal indicating that the charging of the power storage device 19 has been completed from the excavator 200, the notification unit 3108 may notify the user who utilizes the target charge amount setting function of the power storage device 19 that the charging of the power storage device 19 has been completed. In this case, the notification unit 3108 may also request the user to fill out a questionnaire regarding the target charge amount setting function of the power storage device 19. The questionnaire includes questions regarding the interface of the target charge setting function, questions regarding the work after charging based on the target charge amount set by the target charge setting function, and the like. Thereby, the management device 300 can utilize the content of the answers to the questionnaire received through the communication device 320 to perform machine learning or the like for improving the target charge amount setting function.

[0256] For each of the plurality of excavators 200, the log recording unit 3109 records, in the storage unit 3102, logs related to charging based on the target charge amount setting function of the power storage device 19, in the same manner as in the case of the log recording unit 3013. Specifically, the log recording unit 3013 records, in the storage unit 3102, various types of information generated during the process from when the target charge amount is set by the target charge amount setting function of the power storage device 19 until the charging of the power storage device 19 is completed. For each time when the target charge amount is set by the target charge amount setting function of the power storage device 19 and the charging of the power storage device 19 is carried out, a record corresponding to the log is created, and the created record is stored in the storage unit 3102. The record stores, for example, "date", "charging time zone", "charging mode", "setting mode", "target charge amount", "previous discharge amount", and "degree of degradation", etc., which are displayed in the display area 6100 of the above-described confirmation screen 6000. As a result, a record group of logs related to charging based on the target charge amount setting function of the power storage device 19, that is, a database, is constructed in the storage unit 3102. Therefore, the screen display processing unit 3101 can cause the output device 330 (display device) to display a confirmation screen of the log related to charging based on the target charge amount setting function of the power storage device 19 by referring to the database of the log related to charging based on the target charge amount setting function of the power storage device 19 stored in the storage unit 3102. Similarly, the screen display processing unit 3101 can cause the support device 400 (output device 430) to display a confirmation screen of the log related to charging based on the target charge amount setting function of the power storage device 19 by referring to the database of the log related to charging based on the target charge amount setting function of the power storage device 19 stored in the storage unit 3102.

[0257] As described above, in this embodiment, the target charge amount setting request unit 3105 (an example of a setting unit) sets a target value (target charge amount) of the charge amount of the power storage device 19 by the power supplied from the external power source in response to a predetermined input received by the input device 340 (an example of an input unit). Then, the communication device 320 (an example of a communication unit) transmits the target charge amount set by the target charge amount setting request unit 3105 to the excavator 200.

[0258] As a result, the management device 300 (an example of an information processing device) can limit the amount of charge after charging when the power storage device 19 is charged with power from an external power source to the target charge amount instructed by the management device user in response to an input from the management device user. Therefore, the management device user can, for example, set the target charge amount in the excavator 200 according to the content of the next work, etc., and avoid a situation where extra power remains at the end of the work or the charge amount of the power storage device 19 is insufficient until the end of the work. Thus, the management device 300 can more appropriately charge the power storage device 19 that can be charged with power from an external power source in the excavator 200.

[0259] Also, in the present embodiment, when the communication device 320 receives a notification of completion of setting the target charge amount in the excavator 200 from the excavator 200, it may send a notification of completion of setting the target charge amount to the user's email address, the user's social network service account, or the user's terminal device (for example, the support device 400).

[0260] As a result, the user (management device user, support device user) can confirm that the setting of the target charge amount of the power storage device 19 performed through the management device 300 or the support device 400 has been reflected on the excavator 200 side.

[0261] Also, in the present embodiment, the log recording unit 3109 may record a log related to the target charge amount set by the target charge amount setting request unit 3105 in the storage unit 3102. And the screen display processing unit 3101 may cause the output device 330 (display device) to display the above-mentioned log related to the past charge that has already been completed or the current charge in progress.

[0262] As a result, the management device user can, retrospectively, check the setting content related to the target charge amount setting function that has been completed in the past or the setting content related to the target charge amount setting function of the currently ongoing charge.

[0263] Also, in the present embodiment, the log recording unit 3109 may record a log related to the target charge amount set by the target charge amount setting request unit 3105 in the storage unit 3102. Then, the screen display processing unit 3101 may cause the support device 400 (output device 430) connected communicably to display the above-described log related to the past charge that has already been completed or the current charge in progress.

[0264] As a result, the support device user can retrospectively check the setting contents related to the target charge amount setting function that has already been completed in the past or the setting contents related to the target charge amount setting function of the currently ongoing charge.

[0265] Note that the control device 310 may be configured to provide a voice assistant to the management device user through, for example, the sound output device included in the output device 330, and to enable the management device user to set the target charge amount of the power storage device 19 through an interactive interface.

[0266] <Configuration related to the target charge amount setting function of the support device> As shown in FIG. 3, the control device 410 includes a screen display processing unit 4101 and a target charge amount setting request unit 4102.

[0267] The screen display processing unit 4101 causes the output device 430 (display device) to display a screen related to the target charge amount setting function.

[0268] The screen display processing unit 4101 causes, for example, the output device 430 (display device) to display a setting screen for causing the control device 410 to set a target charge amount when the support device user gives an instruction regarding the target charge amount. When a predetermined input is received from the support device user through the input device 440, the screen display processing unit 4101 may shift the display content of the display device to a setting screen regarding the target charge amount of the power storage device 19. The screen display processing unit 4101 may cause, for example, the output device 430 (display device) to display a target charge amount setting screen (setting screen 4000) similar to FIG. 4 described above. Thereby, the support device user can operate the target charge amount setting screen of the support device 400 (output device 430) using the input device 440, and cause the control device 30 of the excavator 200 to set the target charge amount via the control device 410.

[0269] Specifically, the screen display processing unit 4101 may communicate with the management device 300 (control device 310) through the communication device 420, and acquire data regarding the content to be displayed on the setting screen regarding the target charge amount of the power storage device 19 (for example, estimated operation time, estimated charging time, etc.). Thereby, the screen display processing unit 4101 can cause the output device 430 (display device) to display the target charge amount setting screen under the control of the management device 300. Further, the screen display processing unit 4101 can cause the estimated operation time, the estimated charging time, etc. to be displayed on the target charge amount setting screen and notify the support device user under the control of the management device 300.

[0270] Further, the screen display processing unit 4101 causes the output device 430 (display device) to display, for example, a confirmation screen regarding the progress of deterioration of the power storage device 19. When a predetermined input is received from the support device user through the input device 440, the screen display processing unit 4101 may shift the display content of the output device 430 (display device) to a confirmation screen regarding the progress of deterioration of the power storage device 19. The screen display processing unit 4101 may cause the output device 430 (display device) to display, for example, a confirmation screen (confirmation screen 5000) similar to FIG. 5 described above. As a result, the support device user can confirm, through the confirmation screen regarding the progress of deterioration of the power storage device 19, the situation in which the progress of deterioration of the power storage device 19 is suppressed by the target charge amount setting function.

[0271] Specifically, the screen display processing unit 4101 may communicate with the management device 300 (control device 310) through the communication device 420 and acquire data regarding the content to be displayed on the confirmation screen regarding the progress of deterioration of the power storage device 19. Thereby, the screen display processing unit 4101 can cause the output device 430 (display device) to display a confirmation screen regarding the progress of deterioration of the power storage device 19 under the control of the management device 300.

[0272] In addition, the screen display processing unit 4101 causes the output device 430 (display device) to display, for example, a confirmation screen regarding the charging results and charging status of the power storage device 19, specifically, a confirmation screen of the log regarding charging based on the target charge amount setting function of the power storage device 19. When a predetermined input is received from the support device user through the input device 440, the screen display processing unit 4101 may shift the display content of the display device to a confirmation screen of the log regarding charging based on the target charge amount setting function of the power storage device 19. The screen display processing unit 4101 may cause the output device 430 (display device) to display, for example, a confirmation screen (confirmation screen 6000) similar to FIG. 6 described above. As a result, the support device user can grasp the past results of the power storage device 19 being charged after the target charge amount is set by the target charge amount setting function through the confirmation screen of the log regarding charging based on the target charge amount setting function of the power storage device 19. In addition, the support device user can grasp information regarding the charging being performed or planned to be performed after the target charge amount is set by the target charge amount setting function through the confirmation screen of the log based on the target charge amount setting function of the power storage device 19.

[0273] Also, similar to the case of the screen display processing unit 3101 of the management device 300, the screen display processing unit 4101 may cause the output device 430 (display device) to display a setting screen or a confirmation screen for each of the plurality of excavators 200. In this case, the screen display processing unit 4101 may cause the output device 430 (display device) to display a screen (excavator selection screen) for the support device user to select one excavator 200 as the target charge amount setting target from among the plurality of excavators 200. Then, on the excavator selection screen, the screen display processing unit 4101 may cause the output device 430 (display device) to display a setting screen related to one excavator 200 selected by a predetermined input from the support device user through the input device 440. Similarly, the screen display processing unit 4101 may cause the output device 430 (display device) to display an excavator selection screen for the support device user to select one excavator 200 as the confirmation target of the deterioration suppression status of the power storage device 19 from among the plurality of excavators 200. Then, on the excavator selection screen, the screen display processing unit 4101 may cause the output device 430 (display device) to display a deterioration suppression status confirmation screen related to one excavator 200 selected by a predetermined input from the support device user through the input device 440. Similarly, the screen display processing unit 4101 may cause the output device 430 (display device) to display an excavator selection screen for the support device user to select one excavator 200 as the confirmation target of the charging record and charging status of the power storage device 19 from among the plurality of excavators 200. Then, on the excavator selection screen, for one excavator 200 selected by a predetermined input from the support device user through the input device 440, the screen display processing unit 4101 may cause the output device 430 (display device) to display a confirmation screen regarding the charging record and charging status of the power storage device 19, that is, a confirmation screen regarding the charging log based on the target charge amount setting function of the power storage device 19. Thereby, the support device user can set the target charge amount for each of the plurality of excavators 200 or check the progress status, charging record, charging status, etc. of the deterioration of the power storage device 19 for each of the plurality of excavators 200 via the control device 410.

[0274] The target charge amount setting request unit 4102 sets the target charge amount of the power storage device 19 in response to a predetermined input received by the input device 440, and transmits a request signal including the setting content to the excavator 200. The target charge amount setting request unit 4102 may directly transmit the request signal to the excavator 200 through the communication device 420, or may transmit it to the management device 300 and have it transferred from the management device 300 to the excavator 200. For example, when an icon corresponding to the target charge amount determination icon 4520 in FIG. 4 is operated through the input device 440 on the target charge amount setting screen, the target charge amount setting request unit 4102 sets the instruction content (instruction value or recommended value) of the target charge amount setting screen as the target charge amount of the power storage device 19. Then, the target charge amount setting request unit 4102 may transmit a request signal requesting to set the setting content as the target charge amount of the power storage device 19 to the excavator 200. Thereby, the control device 410 can cause the excavator 200 (control device 30) to set the target charge amount of the power storage device 19 in response to a predetermined input of the support device user through the input device 440.

[0275] As described above, in this embodiment, the target charge amount setting request unit 4102 (an example of a setting unit) sets a target value (target charge amount) of the charge amount of the power storage device 19 by the power supplied from the external power source in response to a predetermined input received by the input device 440 (an example of an input unit). Then, the communication device 420 (an example of a communication unit) transmits the target charge amount set by the target charge amount setting request unit 4102 to the excavator 200.

[0276] As a result, the support device 400 (an example of an information processing device) can limit the amount of charge after charging when the power storage device 19 is charged with power from an external power source to the target charge amount instructed by the support device user in response to an input from the support device user. Therefore, the support device user can, for example, set the target charge amount for the excavator 200 according to the content of the next work, etc., and avoid a situation where excess power remains at the end of the work or the charge amount of the power storage device 19 is insufficient until the end of the work. Thus, the support device 400 can more appropriately charge the power storage device 19 that can be charged with power from an external power source in the excavator 200.

[0277] Further, in the present embodiment, the screen display processing unit 4101 may acquire data regarding the above-mentioned log related to past charging that has already been completed or current charging that is in progress from the management device 300, and cause the output device 430 (display device) to display the above-mentioned log related to past charging that has already been completed or current charging that is in progress.

[0278] As a result, the support device user can retrospectively check the setting content regarding the target charge amount setting function that has already been completed in the past, or check the setting content regarding the target charge amount setting function of the currently ongoing charging.

[0279] Note that the control device 410 may be configured to provide a voice assistant to the management device user through, for example, a sound output device included in the output device 430, and enable the support device user to set the target charge amount of the power storage device 19 through an interactive interface.

[0280] [Modifications and Changes] Although the embodiments have been described in detail above, the present disclosure is not limited to such specific embodiments, and various modifications and changes are possible within the scope of the gist described in the claims.

[0281] For example, in the above-described embodiment, the target charge amount setting function of the power storage device 19 mounted on the excavator 200 has been described. However, a similar function may be applied to other work machines equipped with a power storage device that can be charged with power from an external power source. Other work machines may include, for example, transport machines such as forklifts and cranes, construction machines such as bulldozers, agricultural machines such as combines, forestry machines such as harvesters, and the like.

[0282] Finally, this application claims priority based on Japanese Patent Application No. 2020-051713 filed on March 23, 2020, and incorporates the entire contents of the Japanese patent application by reference herein.

Explanation of Reference Numerals

[0283] 1 Lower Travel Body 1A, 1B Travel Hydraulic Motors (Hydraulic Actuators) 3 Upper Swing Body 4 Boom 5 Arm 6 Bucket 7 Boom Cylinder (Hydraulic Actuator) 8 Arm Cylinder (Hydraulic Actuator) 9 Bucket Cylinder (Hydraulic Actuator) 12 Motor for Pump (Motor) 14 Main Pump (Hydraulic Pump) 15 Pilot Pump 18 Inverter Unit 18A Inverter 18B Inverter 19 Power Storage Device 21 Swing Motor 26 Operating Device 30 Control Device 30A~30D Controllers 44 DC-DC Converter 46 Battery 50 Output Device 52 Input Device 130 In-Vehicle Charger 200 Excavator 300 Management Device 320 Communication device (communication unit) 330 Output device 340 Input device (input unit) 400 Support device 420 Communication device (communication unit) 430 Output device 440 Input device (input unit) 3001 Screen display processing unit 3007 Target charge amount setting unit 3101 Screen display processing unit 3105 Target charge amount setting request unit (setting unit) 4101 Screen display processing unit 4102 Target charge amount setting request unit (setting unit)

Claims

1. A hydraulic pump, a hydraulic actuator driven by hydraulic oil supplied from the hydraulic pump, an electric motor that drives the hydraulic pump, a power storage device configured to be chargeable with electric power from an external power source and supply driving power to the electric motor, an input device that receives an input from a user, an acquisition device that acquires information regarding the situation around the excavator, a control device that sets a target value for the amount of charge of the power storage device by electric power supplied from the external power source according to a predetermined input received by the input device, and based on data regarding the actual value of the discharge amount of the power storage device, the control device determines a plurality of recommended options regarding the target value and, in response to the predetermined input that selects one option from the plurality of options, sets a predetermined value corresponding to the one option as the target value, an excavator.

2. A hydraulic pump, a hydraulic actuator driven by hydraulic oil supplied from the hydraulic pump, an electric motor that drives the hydraulic pump, a power storage device configured to be chargeable with electric power from an external power source and supply driving power to the electric motor, an input device that receives an input from a user, an acquisition device that acquires information regarding the situation around the excavator, a control device that sets a target value for the amount of charge of the power storage device by electric power supplied from the external power source according to a predetermined input received by the input device, and based on data regarding the deterioration state of the power storage device, the control device determines a plurality of recommended options regarding the target value and, in response to the predetermined input that selects one option from the plurality of options, sets a predetermined value corresponding to the one option as the target value, an excavator.

3. A hydraulic pump, a hydraulic actuator driven by hydraulic oil supplied from the hydraulic pump, an electric motor that drives the hydraulic pump, a power storage device configured to be chargeable with electric power from an external power source and supply driving power to the electric motor, an input device that receives an input from a user, an acquisition device that acquires information regarding the situation around the excavator, a control device that sets a target value for the amount of charge of the power storage device by electric power supplied from the external power source according to a predetermined input received by the input device, and an output device capable of outputting information to the user, When the target value is set by the control device in response to the predetermined input, the output device outputs, in advance, an estimated value of the operable time of the excavator when the power storage device is charged up to the target value to the user. Excavator.

4. A hydraulic pump, A hydraulic actuator driven by hydraulic oil supplied from the hydraulic pump, An electric motor that drives the hydraulic pump, A power storage device configured to be chargeable with power from an external power source and that supplies drive power to the electric motor, An input device that receives an input from a user, An acquisition device that acquires information regarding the situation around the excavator, A control device that sets a target value for the amount of charge of the power storage device by the power supplied from the external power source in response to a predetermined input received by the input device, A display device that compares and displays the progress of deterioration associated with the actual charging of the power storage device with the predicted transition of deterioration associated with the charging of the power storage device when it is assumed that the charging of the power storage device is performed every time based on the recommended target value set by the control device. Excavator.

5. The input device directly receives an input from a user inside the cab or around the excavator. The excavator according to any one of claims 1 to 4.

6. The input device is a communication device capable of receiving a signal corresponding to an input from a user from a predetermined external device. The excavator according to any one of claims 1 to 4.

7. It includes a display device that displays a screen operable by a user by an input from the input device, An image whose form can be changed by an operation from the input device is displayed on the screen, The control device sets, as the target value, a specific value represented by the form of the image set on the screen in response to the predetermined input. The excavator according to any one of claims 1 to 6.

8. The control device determines a plurality of recommended options regarding the target value based on data regarding the date and time when the next work by the excavator is to be performed, and sets, as the target value, a predetermined value corresponding to one option in response to the predetermined input for selecting one option from the plurality of options. The excavator according to any one of claims 1 to 7.

9. Based on data regarding the environmental conditions at the work site of the excavator, the control device determines a plurality of recommended options regarding the target value, and in response to the predetermined input for selecting one option from the plurality of options, sets a predetermined value corresponding to the one option as the target value. An excavator according to any one of claims 1 to 8.

10. Based on data regarding the position of the excavator, the control device determines a plurality of recommended options regarding the target value, and in response to the predetermined input for selecting one option from the plurality of options, sets a predetermined value corresponding to the one option as the target value. An excavator according to any one of claims 1 to 9.

11. Comprising an output device capable of outputting information to the user. The output device outputs to the user an estimated value of the time required for charging when the power storage device is charged up to the target value. An excavator according to any one of claims 1 to 10.

12. A storage unit that stores a log regarding the charging of the power storage device based on the target value set by the control device. Comprising a display device that displays the log regarding past charging that has already been completed, current charging in progress, or charging before the start of a planned implementation. An excavator according to any one of claims 1 to 11.

13. An information processing device, comprising: a hydraulic pump; a hydraulic actuator driven by hydraulic oil supplied from the hydraulic pump; an electric motor that drives the hydraulic pump; a power storage device configured to be chargeable with electric power from an external power source and that supplies driving power to the electric motor; a communication unit capable of communicating with the outside, including the excavator having an acquisition device that acquires information regarding the situation around the excavator; an input unit that receives an input from the user; and a setting unit that sets a target value for the amount of charge of the power storage device with electric power supplied from the external power source in response to a predetermined input received by the input unit. The setting unit determines a plurality of recommended options regarding the target value based on data regarding the actual value of the discharge amount of the power storage device, and in response to the predetermined input for selecting one option from the plurality of options, sets a predetermined value corresponding to the one option as the target value. The communication unit transmits the target value set by the setting unit to the excavator. An input unit that receives an input from the user. A setting unit that sets a target value for the amount of charge of the power storage device with electric power supplied from the external power source in response to a predetermined input received by the input unit. The setting unit determines a plurality of recommended options regarding the target value based on data regarding the actual value of the discharge amount of the power storage device, and in response to the predetermined input for selecting one option from the plurality of options, sets a predetermined value corresponding to the one option as the target value. The communication unit transmits the target value set by the setting unit to the excavator. Information processing device.

14. When the communication unit receives a notification of completion of setting the target value on the excavator from the excavator, it sends a notification of completion of setting the target value to the user's email address, the user's social network service account, or the user's predetermined terminal device. The information processing apparatus according to claim 13.

15. An information processing apparatus including: a communication unit capable of communicating with the outside, including an excavator having a hydraulic pump, a hydraulic actuator driven by hydraulic oil supplied from the hydraulic pump, an electric motor that drives the hydraulic pump, a power storage device configured to be chargeable with power from an external power source and supply driving power to the electric motor, and an acquisition device that acquires information on the situation around the excavator; and an input unit capable of receiving an input from a user. A setting step of setting a target value for the amount of charge of the power storage device by power supplied from the external power source in response to a predetermined input received by the input unit. A transmission step of causing the target value set in the setting step to be transmitted to the excavator through the communication unit. In the setting step, based on data on the actual value of the discharge amount of the power storage device, a plurality of recommended options regarding the target value are determined, and in response to the predetermined input of selecting one option from the plurality of options, a predetermined value corresponding to the one option is set as the target value. Program

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