Power device, electromechanical conversion device, power storage device, power system, power system control method, program, and storage medium

Abstract

An electromechanical conversion unit (62, 252) of an electric power device (10, 60, 200) comprises an input unit (74, 94, 102, 270) and a conversion unit (80, 272). When kinetic energy generated by the movement of a power storage device (12, 208) is input to the input unit (74, 94, 102, 270), the conversion unit (80, 272) converts the kinetic energy into electric energy.

Description

[Technical Field]

[0001] The present invention relates to a power device, an electromechanical conversion device, an electricity storage device, a power system, a control method for a power system, a program, and a storage medium. [Background technology]

[0002] International Publication No. 2018 / 147046 discloses a battery management system including two power storage devices and a power device to which the two power storage devices are detachably mounted. Each of the two power storage devices has a power storage unit.

[0003] The power device has a sub-battery, which is another power storage unit. The power device generates a startup signal (activation signal) based on the power supplied from the sub-battery. The power device starts outputting the startup signal generated based on the power supplied from the sub-battery to the two power storage devices as a startup command for starting up the two power storage devices. As a result, each of the two power storage devices switches from an inactive state to an active state based on the startup signal from the power device. Note that the inactive state is a state in which the power storage unit inside the power storage device cannot be electrically connected to the outside of the power storage device. The active state is a state in which the power storage unit inside the power storage device can be electrically connected to the outside of the power storage device. Summary of the Invention

[0004] In this way, in order to start up the power storage device, it is necessary to supply power to the power storage device from the sub-battery. This makes it possible to prevent the power storage device from starting up and outputting power unnecessarily to the outside, for example, when the power storage device is transported by itself.

[0005] However, a separate sub-battery is required to start the power storage device. A sensor is also required to monitor the sub-battery. The presence of a sub-battery increases the cost burden on the user. It increases the cost, weight, and size of the power device. Furthermore, if a lead-acid battery or a lithium-ion battery is used as the sub-battery, it must be replaced when it reaches the end of its life. Replacing the sub-battery increases the cost and workload for the user. Furthermore, the used sub-battery must be discarded after replacement, which places a heavy burden on the environment. In light of these problems, it is desirable to either downsize the sub-battery or eliminate the use of the sub-battery altogether.

[0006] The present invention aims to solve the above-mentioned problems.

[0007] A first aspect of the present invention is an electric power device including a connection section to which an electric storage device is connected, an electric operation section electrically connected to the connection section, a holding section in which the electric storage device is detachably held, and an electro-mechanical conversion section, wherein the electric storage device has the electric storage section and an activation processing section that switches the state of the electric storage device between an activated state in which the electric storage section and the outside of the electric storage device can be electrically connected, and an inactivated state in which the electric storage section and the outside of the electric storage device cannot be electrically connected, and the electric power device or an attachment device attached to the electric power device has an instruction to the activation processing section. The electromechanical conversion unit has an input unit arranged to receive kinetic energy accompanying the movement of the power storage device when the power storage device is attached to or detached from the holding unit, and a conversion unit that converts the kinetic energy input to the input unit into electrical energy, and is electrically connected to the other power storage unit.

[0008] A second aspect of the present invention is an electric power device comprising a connection portion to which an electric storage device is connected, an electrical operating portion electrically connected to the connection portion, a holding portion in which the electric storage device is detachably held, and an electro-mechanical conversion portion, wherein the electric storage device has the electric storage portion and an activation processing portion that switches the state of the electric storage device between an activated state in which the electric storage portion can be electrically connected to the outside of the electric storage device, and an inactivated state in which the electric storage portion cannot be electrically connected to the outside of the electric storage device, and the electric power device or a mounting device attached to the electric power device has an activation command portion that outputs a command to the activation processing portion and another electric storage unit electrically connected to the activation command portion, and the activation processing portion is configured to switch between the activated state and the inactivated state by the command output from the activation command portion, and the electro-mechanical conversion portion has an input portion arranged to receive kinetic energy associated with human input, and a conversion portion that converts the kinetic energy input to the input portion into electrical energy, and is electrically connected to the other electric storage unit.

[0009] A third aspect of the present invention is an electromechanical conversion device comprising an input section and a conversion section that converts kinetic energy input to the input section into electrical energy, wherein the input section is arranged in a holding device having a holding section to which an article is detachably held so as to receive the kinetic energy associated with the movement of the article when the article is attached to or detached from the holding section.

[0010] A fourth aspect of the present invention is a power storage device having a power storage unit, the power storage device having an activation processing unit that switches the state of the power storage unit between an activated state in which the power storage unit can be electrically connected to the outside of the power storage device and an inactivated state in which the power storage unit cannot be electrically connected to the outside of the power storage device, and another connection unit, the other connection unit being electrically connected to a mechanical-electrical conversion unit having an input unit arranged to receive kinetic energy associated with human input and a conversion unit that converts the kinetic energy input to the input unit into electrical energy, or is electrically connected to the activation processing unit, or is electrically connected to an activation command unit that outputs a command to the activation processing unit.

[0011] A fifth aspect of the present invention is a power system including the power device according to the first or second aspect and the power storage device.

[0012] A sixth aspect of the present invention is a control method for a power system including a power storage device and a power device to which the power storage device is connected, wherein the power storage device has a power storage unit and an activation processing unit that switches a state of the power storage device between an activated state in which the power storage unit is electrically connectable to an external device of the power storage device and an inactivated state in which the power storage unit is not electrically connectable to an external device of the power storage device, the power device has a connection unit to which the power storage device is connected, an electrically operating unit that is electrically connected to the connection unit, a holding unit in which the power storage device is detachably held, and an electro-mechanical converting unit, the power device or an attachment device attached to the power device has an activation command unit that outputs a command to the activation processing unit and another power storage unit that is electrically connected to the activation command unit, and the electro-mechanical converting unit controls the activation processing unit to activate the power storage device relative to the holding unit. and a conversion unit that converts the kinetic energy input to the input unit into electrical energy, and is electrically connected to the other power storage unit. The control method includes a first step of attaching the power storage unit to the holding unit, a second step of the electro-mechanical conversion unit receiving the kinetic energy associated with the movement of the power storage device and converting it into electrical energy, a third step of the other power storage unit storing the electrical energy converted by the electro-mechanical conversion unit, a fourth step of the activation command unit outputting the command to the activation processing unit using the stored power of the other power storage unit, and a fifth step of the activation processing unit receiving the command and switching the power storage device to the active state.

[0013] A seventh aspect of the present invention is a program for causing a computer to execute the power system control method of the sixth aspect.

[0014] An eighth aspect of the present invention is a storage medium that stores the program of the seventh aspect.

[0015] According to the present invention, it is possible to reduce the size of the sub-battery or eliminate it. That is, it is possible to reduce the size of other power storage units mounted in the power device, and the capacity of the other power storage units can be reduced. This makes it possible to avoid an increase in the size of the power device and suppress a rise in the cost of the power device. Therefore, the present invention can reduce the cost and weight of the power device and the size of the power device. Furthermore, maintenance of the power device is also unnecessary. [Brief explanation of the drawings]

[0016] [Figure 1] FIG. 1 is a configuration diagram of a power device according to a first embodiment. [Figure 2] FIG. 2 is a graph showing the change over time in the amount of charge when the charge stored in the capacitor is discharged. [Figure 3] FIG. 3 is a flowchart showing the operation of the first embodiment. [Figure 4] FIG. 4 is a configuration diagram of a power device according to the second embodiment. [Figure 5] FIG. 5 is a flowchart showing the operation of the second embodiment. [Figure 6] 6A to 6C are diagrams illustrating the operation of the first embodiment. [Figure 7] 7A and 7B are diagrams illustrating the operation of the second embodiment. [Figure 8] 8A and 8B are diagrams illustrating the operation of the third embodiment. [Figure 9] 9A and 9B are diagrams illustrating the operation of the fourth embodiment. [Figure 10] 10A and 10B are diagrams illustrating the operation of the fourth embodiment. [Figure 11] FIG. 11 is a perspective view of the electric power device according to the third embodiment. [Figure 12] FIG. 12 is a perspective view showing attachment and detachment of the power storage device to the power device. [Figure 13] FIG. 13 is a diagram showing the attachment and detachment of the power storage device to the power device. [Figure 14]14A and 14B are diagrams illustrating the mating operation of the connectors. [Figure 15] FIG. 15 is a configuration diagram of the power system. [Figure 16] 16A and 16B are diagrams showing a first modified example. [Figure 17] 17A and 17B are diagrams showing a second modified example. [Figure 18] FIG. 18 is a diagram showing a second modified example. [Figure 19] FIG. 19 is a diagram showing a third modified example. [Figure 20] FIG. 20 is a diagram showing a fourth modified example. [Figure 21] FIG. 21 is a diagram showing a fifth modified example. [Figure 22] 22A and 22B are diagrams showing a sixth modified example. [Figure 23] 23A and 23B are diagrams showing a seventh modified example. [Figure 24] FIG. 24 is a configuration diagram showing the eighth modified example. [Figure 25] FIG. 25 is a flowchart showing the operation of the power system. [Figure 26] 26A and 26B are diagrams showing a ninth modified example. [Figure 27] FIG. 27 is a diagram showing a ninth modified example. [Figure 28] 28A and 28B are diagrams showing a tenth modified example. [Figure 29] FIG. 29 is a diagram showing a tenth modified example. [Figure 30] 30A and 30B are diagrams showing an eleventh modified example. [Figure 31] FIG. 31 is a diagram showing an eleventh modified example. [Figure 32] 32A and 32B are diagrams showing a twelfth modified example. [Figure 33] 33A and 33B are diagrams showing a twelfth modified example. [Figure 34] 34A and 34B are diagrams showing a twelfth modified example. [Figure 35] FIG. 35 is a diagram showing a thirteenth modified example. [Figure 36] FIG. 36 is a diagram showing a fourteenth modified example. [Figure 37] 37A and 37B are diagrams showing a fifteenth modified example. [Figure 38] FIG. 38 is a configuration diagram showing the sixteenth modified example. [Figure 39] 39A and 39B are diagrams showing a seventeenth modified example. [Figure 40] 40A and 40B are diagrams showing a seventeenth modified example. [Figure 41] FIG. 41 is a diagram showing an eighteenth modified example. DETAILED DESCRIPTION OF THE INVENTION

[0017] FIG. 1 is a configuration diagram of a power device 10 (holding device) according to the first embodiment.

[0018] The power device 10 has a battery 12 (power storage device, item), an attachment section 14 (holding section), a PCU (Power Control Unit) 16, and a motor 18 (electrically operated section). The battery 12 is attached to the attachment section 14, such as a slot. The battery 12 is detachable from the attachment section 14. That is, the battery 12 is a mobile battery that can be attached to and detached from the power device 10. The battery 12 is also a rechargeable mobile battery. For example, a detachable lithium-ion battery pack is suitable for the battery 12. Note that in the first embodiment, the battery 12 may be fixed to the attachment section 14.

[0019] The power device 10 may include at least one battery 12. If the power device 10 includes multiple batteries 12, at least one of the multiple batteries 12 may be detachable from the power device 10. In this case, it is more preferable that the battery 12 be detachable from the power device 10 without using a separate work tool or the like. In other words, the battery 12 is configured to be freely detachable from the power device 10 without using a work tool or the like. Furthermore, "detachable from the power device 10" includes a case where the battery 12 is attached to the power device 10 and a case where the battery 12 is detached from the power device 10. In the following explanation, a case where one battery 12 is detachable from the power device 10 will be explained.

[0020] The PCU 16 is provided between the battery 12 and the motor 18. The PCU 16 is a power supply circuit for supplying power to the motor 18. The PCU 16 has an interrupter 20, a capacitor 22 (another power storage unit), a first DC / DC converter 24, a second DC / DC converter 26, a CPU (Central Processing Unit) 28, a communication IC (Integrated Circuit) 30, an activation command unit 32, and a power conversion unit 34 (electrical operation unit).

[0021] When the battery 12 is attached to the attachment part 14, the battery 12 and the power conversion part 34 can exchange power via a power transmission path 36. That is, the positive electrode of the battery 12 is electrically connected to the positive electrode of the input side (primary side) of the power conversion part 34 via one power line 38. The negative electrode of the battery 12 is electrically connected to the negative electrode of the input side of the power conversion part 34 via the other power line 40. The motor 18 is electrically connected to the output side (secondary side) of the power conversion part 34.

[0022] The power conversion unit 34 includes an inverter. The power conversion unit 34 converts DC power supplied from the battery 12 into AC power. The motor 18 is driven by the AC power supplied from the power conversion unit 34. When the motor 18 generates power, the power conversion unit 34 converts the AC power supplied from the motor 18 into DC power. The battery 12 stores (charges) the DC power supplied from the power conversion unit 34.

[0023] The positive electrode of the capacitor 22 is electrically connected to one power line 38 via the interrupter 20. The negative electrode of the capacitor 22 is electrically connected to the other power line 40. In other words, the series circuit of the interrupter 20 and the capacitor 22 is connected in parallel to the battery 12, the power converter 34, and the motor 18.

[0024] The capacitor 22 functions as a smoothing capacitor for the power conversion operation in the power conversion unit 34, the first DC / DC converter 24, or the second DC / DC converter 26. Therefore, the capacitor 22 can be included inside the power conversion unit 34, the first DC / DC converter 24, or the second DC / DC converter 26. The capacitor 22 stores DC power supplied via the power transmission path 36 as an electric charge. Alternatively, the capacitor 22 discharges the electric charge via the power transmission path 36, etc. The capacitor 22 may be provided detachably with respect to the PCU 16.

[0025] As shown in FIG. 2, the amount of charge (charge amount) stored in the capacitor 22 (see FIG. 1) decreases over time. As will be described later, if the charge amount is relatively large, a charge amount sufficient to start the CPU 28 (computer) and the activation command unit 32 can be secured. Furthermore, as time passes and the charge amount decreases to a certain value, a charge amount sufficient to start the CPU 28 and the activation command unit 32 cannot be secured. The curve showing the change in charge amount over time shown in FIG. 2 varies depending on the capacitance of the capacitor 22. Specifically, in the case of a capacitor with a relatively large capacity, such as an electric double layer capacitor, the charge amount does not decrease significantly over time. Furthermore, in the case of a capacitor with a relatively small capacity, such as a multilayer ceramic capacitor or an electrolytic capacitor, it may be impossible to secure a charge amount sufficient to start the CPU 28 and the activation command unit 32 over time.

[0026] The on / off unit 20 is a changeover switch that is switched from off to on by a user's operation.

[0027] The battery 12 has a power storage unit 41 and a connector 42 (another connection unit). The power storage unit 41 is made up of a plurality of cells connected in series. The power storage unit 41 is a secondary battery. The connector 42 is a female connector (see FIG. 6A). The connector 42 is also called a receptacle.

[0028] The mounting unit 14 has a connector 44 (connecting unit) and a detection unit 46. The connector 44 is a male connector (see FIG. 6A). The connector 44 is also called a plug.

[0029] When the user attaches the battery 12 to the attachment portion 14, the two connectors 42, 44 are connected (engaged). When the user removes the battery 12 from the attachment portion 14, the two connectors 42, 44 are disconnected.

[0030] The detection unit 46 detects that the two connectors 42, 44 are in a disconnected state. When the detection unit 46 detects that the two connectors 42, 44 are in a disconnected state, the interrupter 20 is switched from on to off based on the detection result of the detection unit 46. The detection unit 46 and the interrupter 20 may be mechanically connected by a connecting mechanism (not shown). This allows the interrupter 20 to be mechanically switched from on to off when the detection unit 46 detects that the two connectors 42, 44 are in a disconnected state.

[0031] When the battery 12 is attached to the attachment portion 14 and the two connectors 42, 44 are in a connected state, the power storage unit 41 of the battery 12 can supply DC power to the PCU 16. That is, when the battery 12 is attached to the attachment portion 14, the power device 10 is in an activated state in which it can drive the motor 18. On the other hand, when the two connectors 42, 44 are in a disconnected state, the power storage unit 41 of the battery 12 cannot supply DC power to the PCU 16. That is, when the two connectors 42, 44 are in a disconnected state, the power device 10 is in a non-activated state in which it cannot drive the motor 18.

[0032] The first DC / DC converter 24 steps down the DC voltage of the power transmission path 36 to a DC voltage of a predetermined value. The stepped-down DC voltage is supplied to the second DC / DC converter 26 and the activation command unit 32. The second DC / DC converter 26 further steps down the DC voltage supplied from the first DC / DC converter 24. The second DC / DC converter 26 supplies the stepped-down DC voltage to the CPU 28 and the communication IC 30.

[0033] The CPU 28 and the communication IC 30 are each driven by a DC voltage supplied from the second DC / DC converter 26. The CPU 28 controls each part of the power device 10. The communication IC 30 can transmit and receive signals or information to and from the power conversion unit 34, the first DC / DC converter 24, the second DC / DC converter 26, and the battery 12 via a communication line 48 such as a CAN (Controller Area Network).

[0034] The activation command unit 32 generates an activation signal based on the DC voltage supplied from the second DC / DC converter 26. The activation command unit 32 supplies the generated activation signal to the battery 12 via two connectors 42, 44.

[0035] The battery 12 further includes a BMU (Battery Management Unit) 50 for controlling the entire battery 12. The BMU 50 includes an activation processing unit 52, a battery control unit 54, and a communication processing unit 56.

[0036] Based on the activation signal, activation processing unit 52 switches the state of battery 12 from an inactive state in which power storage unit 41 cannot be electrically connected to the outside of battery 12 to an active state in which power storage unit 41 can be electrically connected to the outside of battery 12. Therefore, in the inactive state, power storage unit 41 cannot output power. In addition, in the active state, power storage unit 41 can output power.

[0037] The battery control unit 54 detects, for example, changes in the state (voltage, SOC, etc.) of each cell constituting the power storage unit 41 of the battery 12 and adjusts the charge state of each cell to be uniform. The battery control unit 54 also controls a switch (not shown) under control of the CPU 28 or the like to enable the output of power from the power storage unit 41.

[0038] The communication processing unit 56 communicates with the CPU 28 in accordance with a predetermined protocol. For example, the communication processing unit 56 communicates information for controlling the charging and discharging of the battery 12 with the CPU 28 via the communication line 48 and the communication IC 30.

[0039] The power device 10 according to the first embodiment is configured as described above. Next, the operation of the power device 10 will be described with reference to the flowchart in Fig. 3. Here, the description will also refer to Figs. 1 and 2 as necessary. Note that the following description will be given assuming that an amount of charge sufficient to activate the CPU 28, the communication IC 30, and the activation command unit 32 has been stored in advance in the capacitor 22.

[0040] First, in step S1 (first step), when the user attaches the battery 12 (see FIG. 1) to the attachment portion 14, the connector 42 of the battery 12 and the connector 44 of the attachment portion 14 are connected (step S1: YES).

[0041] In the next step S2, the user turns on the interrupter 20.

[0042] As a result, in step S3, the capacitor 22 discharges the charge stored in the capacitor 22. As a result, the supply of DC power (DC voltage) from the capacitor 22 to the first DC / DC converter 24 begins. The first DC / DC converter 24 steps down the DC voltage supplied from the capacitor 22. The second DC / DC converter 26 further steps down the DC voltage supplied from the first DC / DC converter 24.

[0043] In the next step S4, the CPU 28 is activated by the DC voltage supplied from the second DC / DC converter 26. The CPU 28 instructs the activation command unit 32 to generate an activation signal. Upon receiving the instruction from the CPU 28, the activation command unit 32 starts generating an activation signal based on the DC voltage supplied from the first DC / DC converter 24. As a result, in step S5 (fourth step), the activation command unit 32 starts supplying the activation signal to the activation processing unit 52.

[0044] In the next step S6 (fifth step), the activation processing unit 52 switches the battery 12 from the inactive state to the active state based on the activation signal supplied from the activation command unit 32. This causes the battery 12 to start up.

[0045] In the next step S7, the BMU 50 executes a startup process for the battery 12, including an initialization process for the battery 12. The startup process enables DC power to be supplied from the power storage unit 41 of the battery 12 to the PCU 16. The startup process also enables various signals to be transmitted and received between the communication processing unit 56 and the communication IC 30.

[0046] In the next step S8, the power storage unit 41 of the battery 12 supplies DC power to the power conversion unit 34 via the power transmission path 36 under control of the CPU 28. The power conversion unit 34 converts the DC power into AC power. The motor 18 is driven by the AC power supplied from the power conversion unit 34.

[0047] Thereafter, if the user decides to stop driving the power device 10 (step S9: YES), the user removes the battery 12 from the attachment unit 14 (step S10: YES). This causes the two connectors 42, 44 to become disconnected, and the supply of DC power from the power storage unit 41 of the battery 12 to the PCU 16 is cut off. As a result, the power device 10 switches from an activated state to a deactivated state. Also, the supply of an activation signal from the activation command unit 32 to the activation processing unit 52 is cut off. As a result, the battery 12 switches from an activated state to a deactivated state.

[0048] In step S11, the detection unit 46 detects that the two connectors 42, 44 are disconnected. Based on the detection result of the detection unit 46, the connection / disconnection unit 20 switches from ON to OFF.

[0049] By turning off the interrupter 20, the number of circuit elements and wirings electrically connected to the capacitor 22 in the power device 10 is reduced. This makes it possible to prevent the amount of charge stored in the capacitor 22 from decreasing over time. As a result, the next time the power device 10 is started up, the activation command unit 32 and the CPU 28 can be activated based on the charge stored in the capacitor 22, and the battery 12 can be switched from an inactive state to an active state.

[0050] In the above description, the case where the interrupter 20 is provided in the PCU 16 has been described. If the capacitor 22 has a relatively large capacity, the interrupter 20 may be omitted. In this case, even if the charge in the capacitor 22 is discharged, a sufficient amount of charge can be secured to start the activation command unit 32 and the CPU 28 the next time the power device 10 is started. In this case, as indicated by the dashed lines in the flowchart of FIG. 3, the processes of steps S2 and S11 are skipped.

[0051] In the above description, the capacitor 22 (see FIG. 1) and the interrupter 20 are arranged in series. The interrupter 20 may be arranged on a path for discharging electric charge in the PCU 16. For example, the interrupter 20 may be arranged on the wiring leading from the capacitor 22 to the CPU 28. Even in this case, it is possible to prevent the amount of electric charge stored in the capacitor 22 from decreasing.

[0052] Furthermore, in the above description, the charge stored in the capacitor 22 may be actively discharged when the battery 12 is removed from the attachment part 14. This can prevent the user from getting an electric shock when the connector 42 of the attachment part 14 is exposed.

[0053] Furthermore, in the above description, the charge stored in capacitor 22 is mainly used to switch battery 12 to an active state. In the first embodiment, in addition to switching battery 12 to an active state, the charge stored in capacitor 22 may also be used to drive CPU 28 and communication IC 30 and for display processing on a display unit (not shown).

[0054] In the above description, the battery 12 maintains the active state until it is removed from the attachment unit 14. In the first embodiment, the battery 12 may be switched to the inactive state even when it is attached to the attachment unit 14. In this case, when the battery 12 is in the inactive state, it is desirable to turn off the interrupter 20 in order to suppress self-discharge of the capacitor 22. Furthermore, when the battery 12 is to be switched back to the active state, the interrupter 20 can be turned on again.

[0055] Next, a power device 60 (holding device) according to a second embodiment will be described with reference to Figures 4 to 10B. In the power device 60 according to the second embodiment, the same components as those in the power device 10 according to the first embodiment (see Figures 1 to 3) are designated by the same reference numerals, and detailed description thereof will be omitted.

[0056] The power device 60 according to the second embodiment differs from the power device 10 according to the first embodiment in that it includes a configuration for charging (storing) the capacitor 22. That is, when a capacitor 22 with a relatively small capacity is used, there is a possibility that the amount of charge stored in the capacitor 22 is not sufficient to activate the activation command unit 32 and the CPU 28 upon discharging the capacitor 22. Therefore, in the power device 60 according to the second embodiment, the capacitor 22 is actively charged when the power device 60 is in an inactive state. For this reason, the power device 60 further includes an electromechanical converter 62 and an AC / DC converter 64. The electromechanical converter 62 and the AC / DC converter 64 are provided in the mounting unit 14. The AC / DC converter 64 is, for example, a diode bridge. The AC / DC converter 64 is electrically connected in parallel with the capacitor 22.

[0057] Next, the operation of the power device 60 according to the second embodiment will be described with reference to the flowcharts of Figures 3 and 5. The operation of the second embodiment differs from the operation of the first embodiment in that the processes of steps S12 and S13 are executed between steps S1 and S2.

[0058] In the second embodiment, when the battery 12 (see FIG. 4) is attached to the attachment portion 14 (step S1: YES), the process proceeds to step S12 (second step). In step S12, the electromechanical converter 62 converts mechanical energy generated by the movement of the battery 12 into electrical energy. Specifically, the electromechanical converter 62 converts the mechanical energy into AC power.

[0059] In the next step S13 (third step), the AC / DC converter 64 converts the AC power supplied from the electromechanical converter 62 into DC power. The AC / DC converter 64 charges the converted DC power into the capacitor 22. Thereafter, the power device 60 performs the processes of steps S2 to S11 in FIG. 3.

[0060] In this way, in the second embodiment, charge is accumulated in the capacitor 22 before the on / off unit 20 (see FIG. 4) is turned on. This ensures that even if a capacitor 22 with a relatively small capacity is used, a sufficient amount of charge can be secured to start up the activation command unit 32 and the CPU 28.

[0061] Next, specific configurations (first to fourth examples) of the power device 10 according to the second embodiment will be described with reference to Figures 6A to 10B. Here, a specific configuration of the mounting portion 14 including the electromechanical converting unit 62 will be described.

[0062] The first embodiment will be described with reference to FIGS. 6A to 6C.

[0063] In the first embodiment, the mounting portion 14 is illustrated as a slot 66. In FIG. 6A, the slot 66 is a case 68 having an opening (not shown) into which the battery 12 can be inserted and removed. A male connector 44 is disposed on a bottom 70 of the case 68. Also, on the bottom 70 of the case 68, a mechanical-electrical transducer 62 and a spring 72 (push-back portion) are disposed with the connector 44 sandwiched between them. A plate 74 (input portion) connected to the mechanical-electrical transducer 62 and the spring 72 is disposed within the slot 66. The plate 74 faces the bottom 70 of the case 68, with the mechanical-electrical transducer 62 and the spring 72 interposed therebetween.

[0064] The plate 74 has a hole 76 formed therein through which the connector 42 can be inserted. The electromechanical transducer 62 and the spring 72 can each expand and contract in the direction of inserting and removing the battery 12 (the up and down direction in FIGS. 6A to 6C). Specifically, the electromechanical transducer 62 is a piezoelectric element. A female connector 42 that fits into the connector 44 of the attachment portion 14 is provided on a bottom 78 of the battery 12 (the lower part of the battery 12 shown in FIGS. 6A to 6C).

[0065] Next, the operation of the first embodiment will be described.

[0066] 6A is an explanatory diagram showing a state (second position) when a user inserts the battery 12 into the slot 66. In this state, the electromechanical transducer 62 and the spring 72 are each stretched upward in FIG. 6A. That is, the plate body 74 is subjected to an upward resilient force of the spring 72. As a result, the plate body 74 is positioned so as to be spaced apart from the bottom 70 of the case 68.

[0067] Next, when the user inserts the battery 12 into the slot 66, the bottom 78 of the battery 12 abuts against the plate 74. As the user pushes the battery 12 in, the plate 74 receives a downward force from the battery 12. As a result, the plate 74 descends toward the bottom 70 of the case 68 against the resilient force of the spring 72. At this time, the plate 74 descends while decelerating the battery 12 due to the resilient force of the spring 72. In addition, the spring 72 and the electromechanical transducer 62 each receive a downward force from the plate 74. As a result, the spring 72 and the electromechanical transducer 62 are each compressed downward, as shown in FIG. 6B . The electromechanical transducer 62 converts the force received from the plate 74 into AC power. As the user pushes the battery 12 further downward, the connector 44 passes through the hole 76 and engages with the connector 42 of the battery 12. As a result, the battery 12 is installed in the slot 66 .

[0068] When the user removes the battery 12 from the slot 66, the user pulls the battery 12 upward. This disengages the two connectors 42, 44 from their mated state. Next, when the user pulls the battery 12 further upward, the plate 74 is released from its state of being pressed by the battery 12. As a result, as shown in FIG. 6C , the electromechanical transducer 62 and the spring 72 each extend upward. At this time, the electromechanical transducer 62 converts the force that extends the electromechanical transducer 62 upward into AC power.

[0069] Therefore, in the first embodiment, the electromechanical transducer 62 generates electricity when the user inserts the battery 12 into the slot 66 and when the user removes the battery 12 from the slot 66. This allows the capacitor 22 to be suitably charged.

[0070] Furthermore, before the two connectors 42, 44 are mated, the bottom 78 of the battery 12 comes into contact with the plate 74. That is, before the two connectors 42, 44 come into contact with each other, the bottom 78 of the battery 12 comes into contact with the plate 74. This prevents the connector 44 from being damaged by an impact from the battery 12.

[0071] In the first embodiment, the plate 74 may be the bottom of the slot 66. In this case, the case 68 serves as a case that houses the slot 66. Therefore, the slot 66 is movable in the direction of inserting and removing the battery 12.

[0072] In the first embodiment, the spring 72 may be replaced with a pressure accumulator damper or a rack and pinion. In this case, the above-described expansion and contraction operation can also be achieved.

[0073] Furthermore, in the first embodiment, only the spring 72 may be capable of expanding and contracting in the vertical direction. In this case, a dynamo, a solenoid, or the like can be used as the electromechanical conversion unit 62.

[0074] The second embodiment will be described with reference to FIGS. 7A and 7B.

[0075] In the second embodiment, the electromechanical converter 62 is a rotating electric machine 80 (conversion unit). In addition, in the second embodiment, a mechanical converter 82 is disposed between the plate body 74 and the rotating electric machine 80. The mechanical converter 82 has a column body 84, a rack 86, a first pinion 88 (power transmission unit), and a second pinion 90 (power transmission unit).

[0076] The pillar 84 is a pillar-shaped member attached to the bottom surface of the plate 74. The pillar 84 is attached to the bottom surface of the plate 74 at a location on the opposite side of the spring 72, with the connector 44 in between. The pillar 84 extends downward from the bottom surface of the plate 74. The pillar 84 is attached to the bottom surface of the plate 74 so that it does not collide with the bottom 70 of the case 68 when the plate 74 moves up and down.

[0077] The rack 86 is formed in the vertical direction on the side wall of the pillar body 84. The first pinion 88 is a gear that meshes with the rack 86. The second pinion 90 is a gear with a larger diameter than the first pinion 88. The second pinion 90 meshes with the first pinion 88. The second pinion 90 is connected to a rotating shaft portion 92 of the rotating electric machine 80.

[0078] Next, the operation of the second embodiment will be described.

[0079] 7A, when the user inserts the battery 12 into the slot 66, the plate 74 is subjected to the upward resilient force of the spring 72 and is positioned away from the bottom 70 of the case 68 (second position). As a result, the pillar 84 attached to the plate 74 also moves upward. The first pinion 88 is engaged with the lower portion of the rack 86.

[0080] When the user inserts the battery 12 into the slot 66, the bottom 78 of the battery 12 abuts against the plate 74. When the user further pushes the battery 12, the plate 74 descends toward the bottom 70 of the case 68 against the resilient force of the spring 72. The plate 74 descends while decelerating the battery 12 due to the resilient force of the spring 72. At this time, the pillar 84 descends integrally with the plate 74. The first pinion 88 is engaged with the rack 86, so the force (kinetic energy) of the pillar 84 moving downward is converted into rotational force (rotational energy). The rotational force converted by the first pinion 88 rotates the rotating shaft 92 via the second pinion 90. The rotating electric machine 80 generates electricity through the rotation of the rotating shaft 92. That is, the rotating electric machine 80 converts the kinetic energy of the plate 74 as it descends into electrical energy (AC power). 7B, the connector 44 passes through the hole 76 and mates with the connector 42 of the battery 12. As a result, the battery 12 is installed in the slot 66 (first position).

[0081] When the user removes the battery 12 from the slot 66, the user pulls the battery 12 upward. This disengages the two connectors 42, 44. Next, when the user pulls the battery 12 further upward, the plate 74 is released from its pressed state by the battery 12. As a result, the spring 72 expands upward, and the plate 74 and the pillar 84 move upward together. The first pinion 88 converts the force of the pillar 84 moving upward into rotational force. The rotational force converted by the first pinion 88 rotates the rotating shaft 92 via the second pinion 90. The rotating electric machine 80 generates electricity through the rotation of the rotating shaft 92. That is, the rotating electric machine 80 converts the kinetic energy of the plate 74 when it rises into electrical energy.

[0082] Therefore, in the second embodiment as well, the rotating electric machine 80 generates electricity when the user inserts the battery 12 into the slot 66 and when the user removes the battery 12 from the slot 66. This allows the capacitor 22 to be suitably charged. Also in the second embodiment as well, the bottom 78 of the battery 12 and the plate body 74 come into contact with each other before the two connectors 42, 44 are mated. This prevents the connector 44 from being damaged by an impact from the battery 12.

[0083] In the second embodiment as well, the plate 74 may be the bottom of the slot 66. In the second embodiment as well, the spring 72 may be replaced with a pressure accumulator damper or a rack and pinion.

[0084] The third embodiment will be described with reference to FIGS. 8A and 8B.

[0085] In the third embodiment, the electromechanical transducer 62 is also a rotating electric machine 80. In the third embodiment, an arm 94 (input unit, mechanical transducer) is connected to a rotating shaft 92 of the rotating electric machine 80. The base end of the arm 94 is connected to the rotating shaft 92. The arm 94 extends in a direction perpendicular to the rotating shaft 92 (in the radial direction of the rotating shaft 92). The tip end of the arm 94 is located below the bottom 78 of the battery 12. A roller 96 is attached to the tip end of the arm 94. Note that the roller 96 can be omitted. A torsion spring 97 (push-back unit) may be provided at the base end of the arm 94 or on the rotating shaft 92. The torsion spring 97 applies a spring force to the arm 94 and the rotating shaft 92 such that they rotate clockwise in FIGS. 8A and 8B around the rotating shaft 92.

[0086] Next, the operation of the third embodiment will be described.

[0087] As shown in FIG. 8A, when the user inserts the battery 12 into the slot 66, the tip of the arm 94 is located in the space below the bottom 78 of the battery 12 and above the connector 44.

[0088] When the user inserts the battery 12 into the slot 66, the bottom 78 of the battery 12 abuts against the roller 96. In this case, the roller 96 and the arm 94 receive a downward force from the battery 12. When the user further pushes the battery 12 in, the arm 94 and the rotating shaft 92 rotate (pivot) counterclockwise around the rotating shaft 92 due to the force from the battery 12 against the spring force of the torsion spring 97. That is, the arm 94 converts the force (kinetic energy) of the battery 12 moving downward into a rotational force (rotational energy). In this case, the arm 94 abuts against the bottom 78 of the battery 12, thereby rotating the battery 12 while decelerating it. Furthermore, the rotating electric machine 80 generates electricity through the rotation of the rotating shaft 92. That is, the rotating electric machine 80 converts the kinetic energy of the battery 12 as it descends into electrical energy (AC power). 8B, the battery 12 is inserted into the slot 66. As a result, the battery 12 is inserted into the slot 66. As shown in FIG.

[0089] When the user removes the battery 12 from the slot 66, the user pulls the battery 12 upward. This disengages the two connectors 42, 44. Next, when the user pulls the battery 12 further upward, the arm 94 is released from the state of being pressed by the battery 12. In this case, the arm 94 and the rotating shaft 92 rotate clockwise around the rotating shaft 92 due to the spring force of the torsion spring 97. As a result, the tip of the arm 94 returns to the position shown in FIG. 8A. At this time, the rotating electric machine 80 generates electricity through the rotation of the rotating shaft 92. That is, the rotating electric machine 80 converts the kinetic energy of the battery 12 as it rises into electrical energy.

[0090] Therefore, in the third embodiment as well, the rotating electric machine 80 generates electricity when the user inserts the battery 12 into the slot 66 and when the user removes the battery 12 from the slot 66. This allows the capacitor 22 to be suitably charged.

[0091] Furthermore, before the two connectors 42, 44 are mated, the bottom 78 of the battery 12 comes into contact with the tip (roller 96) of the arm 94. This prevents the connector 44 from being damaged by an impact from the battery 12.

[0092] In the third embodiment, the bottom portion 70 may be the bottom portion of the slot 66 .

[0093] The fourth embodiment will be described with reference to FIGS. 9A to 10B.

[0094] In the fourth embodiment, the electromechanical converter 62 is also the rotating electric machine 80. In addition, in the fourth embodiment, a mechanical converter 98 is disposed between the rotating electric machine 80 and the battery 12. The mechanical converter 98 includes a push bar 102 (input unit), arms 104 and 106, and a rotation mechanism 108. The push bar 102 extends horizontally between the bottom 78 of the battery 12 and the bottom 70 of the case 68. One end of the arm 104 (power transmission unit) is connected to the right end of the push bar 102. The other end of the arm 104 is connected to the rotation shaft 92 of the rotating electric machine 80. One end of the arm 106 is connected to the left end of the push bar 102. The other end of the arm 106 is connected to the rotation shaft 110 of the rotation mechanism 108. The rotation mechanism 108 is a bearing or a rotating electric machine. When the rotation mechanism 108 is a bearing, the rotation shaft 110 is journaled by the bearing. When the rotation mechanism 108 is a rotating electric machine, the rotation shaft 110 is rotated by the driving force of the rotating electric machine.

[0095] In the fourth embodiment, an advancing / retracting mechanism 112 is provided in the slot 66. The advancing / retracting mechanism 112 advances and retracts the connector 44 relative to the connector 42 of the battery 12. Specifically, the advancing / retracting mechanism 112 has a pillar body 114, a rack 116, a third pinion 118, a fourth pinion 120, and a rotating electric machine 122, similar to the mechanical conversion unit 82 (see FIGS. 7A and 7B).

[0096] The pillar 114 is a pillar-shaped member attached to the bottom surface of the connector 44. The pillar 114 extends downward from the bottom surface of the connector 44. The pillar 114 is attached to the bottom surface of the connector 44 so as not to collide with the bottom 70 of the case 68 when the connector 44 moves forward or backward relative to the connector 42.

[0097] The rack 116 is formed in the vertical direction on the side wall of the pillar body 114. The third pinion 118 is a gear that meshes with the rack 116. The fourth pinion 120 is a gear with a larger diameter than the third pinion 118. The fourth pinion 120 meshes with the third pinion 118. The fourth pinion 120 is connected to a rotating shaft 124 of a rotating electric machine 122.

[0098] Note that a torsion spring 125 (push-back portion) may be provided on the other end of at least one of the arms 104, 106 and the two rotating shafts 92, 110, or on at least one of the rotating shafts. The torsion spring 125 applies spring force to the arms 104, 106 and the rotating shafts 92, 110 to rotate the arms 104, 106 around the rotating shafts 92, 110 so that the push-down bar 102 is positioned as shown in Fig. 9A. Figs. 9A to 10B show the case where the torsion spring 125 is provided on the rotating shaft 92.

[0099] Next, the operation of the fourth embodiment will be described.

[0100] 9A , when the user inserts the battery 12 into the slot 66, the push bar 102 is located in the space below the bottom 78 of the battery 12 and above the connector 44. The connector 44 is housed in a recess 126 formed in the bottom 70 of the case 68.

[0101] When the user inserts the battery 12 into the slot 66, the bottom 78 of the battery 12 abuts against the push bar 102. In this case, the push bar 102 receives a downward force from the battery 12. When the user further pushes the battery 12 in, the push bar 102, the two arms 104, 106, and the two rotating shafts 92, 110 rotate about the rotating shafts 92, 110 due to the force from the battery 12, against the spring force of the torsion spring 125. That is, the mechanical conversion unit 98 converts the force (kinetic energy) of the battery 12 moving downward into a rotational force (rotational energy). In this case, the push bar 102 abuts against the bottom 78 of the battery 12, thereby decelerating and displacing the battery 12. The rotating electric machine 80 generates electricity through the rotation of the rotating shafts 92. That is, the rotating electric machine 80 converts the kinetic energy generated when the battery 12 descends into electrical energy (AC power).

[0102] When the user pushes the battery 12 further downward, the bottom 78 of the battery 12 abuts against the bottom 70 of the case 68, as shown in Figure 9B. In this case, the connector 44 is housed in the recess 126 and does not protrude from the bottom 70 of the case 68. This prevents the connector 44 from being damaged by an impact from the battery 12.

[0103] Next, as shown in FIG. 10A, the rotating electric machine 122 of the advancing / retreating mechanism 112 is driven to rotate the rotating shaft 124. As a result, the rotational force of the rotating shaft 124 is transmitted to the rack 116 via the fourth pinion 120 and the third pinion 118. The rack 116 converts the rotational force from the third pinion 118 into upward translational motion. As a result, as shown in FIG. 10B, the connector 44 and the column body 114 rise toward the battery 12. As a result, the connector 44 and the connector 42 of the battery 12 mate with each other, and the battery 12 is installed in the slot 66. Note that in FIGS. 10A and 10B, the push bar 102 is shown by a two-dot chain line.

[0104] When the user removes the battery 12 from the slot 66, the rotating electric machine 122 is driven to rotate the rotating shaft 124 so that the connector 44 and the column body 114 descend. As a result, the rotational force of the rotating shaft 124 is transmitted to the rack 116 via the fourth pinion 120 and the third pinion 118. The rack 116 converts the rotational force from the third pinion 118 into downward translational motion. As a result, the connector 44 and the column body 114 descend so as to move away from the battery 12. As a result, the connectors 42, 44 are released from the mated state. The connector 44 also returns to the position shown in FIGS. 9B and 10A and is accommodated in the recess 126.

[0105] Next, when the user pulls the battery 12 upward, the push bar 102 is released from the state of being pressed by the battery 12. As a result, the push bar 102, the two arms 104, 106, and the two rotating shafts 92, 110 rotate about the rotating shafts 92, 110 due to the spring force of the torsion spring 125. As a result, the push bar 102 returns to the position shown in FIG. 9A. At this time, the rotating electric machine 80 generates electricity through the rotation of the rotating shaft 92. In other words, the rotating electric machine 80 converts the kinetic energy of the battery 12 rising into electrical energy.

[0106] Therefore, in the fourth embodiment as well, the rotating electric machine 80 generates electricity when the user inserts the battery 12 into the slot 66 and when the user removes the battery 12 from the slot 66. This allows the capacitor 22 to be suitably charged.

[0107] In the fourth embodiment, if the rotation mechanism 108 is a rotating electric machine, the rotating electric machine may generate electricity when the rotation shaft 110 rotates in conjunction with the rotation of the arm 106. This allows a larger amount of charge to be stored in the capacitor 22.

[0108] Also, in the fourth embodiment, the bottom portion 70 may be the bottom portion of the slot 66, as in the first to third embodiments.

[0109] In the fourth embodiment, the connector 44 advances and retreats relative to the connector 42 as the rotating electric machine 122 is driven. In the fourth embodiment, a handle (not shown) that can be operated by a user may be mechanically connected to the connector 44. When the operating force of the user is transmitted from the handle to the connector 44, the connector 44 advances and retreats relative to the connector 42.

[0110] Furthermore, a rotating electric machine (not shown) may be mechanically connected to the power transmission path between the handle and connector 44. This rotating electric machine may be a device equivalent to rotating electric machine 80. When the user operates the handle, the kinetic energy generated when connector 44 moves forward and backward relative to connector 42 is converted into electrical energy by the rotating electric machine.

[0111] In the above description, the rotating electric machine converts into electrical energy the kinetic energy generated when the user operates the handle to move the connector 44. From the viewpoint of converting kinetic energy into electrical energy, the handle does not have to be a handle for driving the connector 44. The handle may be a handle for only operating the rotating electric machine.

[0112] In the first and second embodiments, the electric power devices 10 and 60 are used as power supply devices for various vehicles, such as unicycles, two-wheeled vehicles, three-wheeled vehicles, and four-wheeled vehicles. However, the first and second embodiments are not limited to power supply devices for vehicles. The electric power devices 10 and 60 may be various types of power supply equipment, such as various chargers, power feeders, and power converters.

[0113] Furthermore, in the above description, the power devices 10, 60 have one battery 12. In the first and second embodiments, the power devices 10, 60 may have two or more batteries 12. In this case, the above process can be easily applied to the start-up process of the second and subsequent batteries 12.

[0114] The power devices 10 and 60 can be applied to various power supply systems that supply power from a plurality of batteries 12 to a load or the like, or that charge a plurality of batteries 12. The power devices 10 and 60 can be installed in homes, offices, public facilities, or the like.

[0115] The power devices 10 and 60 can also be applied to power supply systems for various types of mobile bodies. The various types of mobile bodies include those that can accommodate people and those that cannot accommodate people. Examples of such mobile bodies include vehicles, aircraft, flying vehicles, and ships. Furthermore, examples of vehicle power supply systems include power supply systems for electric vehicles and power supply systems for vehicles equipped with a drive motor, such as hybrid vehicles. In other words, the power devices 10 and 60 can be applied to power supply systems for various types of vehicles, such as unicycles, two-wheeled vehicles, and four-wheeled vehicles.

[0116] The power devices 10 and 60 can also be applied to power supply systems for various general-purpose devices. Specifically, the various general-purpose devices include (1) various chargers, (2) various dischargers, (3) various work machines such as general-purpose implements, lawnmowers, tillers, and blowers. The various general-purpose devices also include (4) electric devices without motors such as floodlights and lighting equipment, and (5) various devices installed in houses and buildings.

[0117] (1) to (5) may be general-purpose equipment that does not require a human operator. (3) may be a work machine that does not require a human operator. Alternatively, (3) may be a work machine that requires a human operator. Furthermore, examples of (5) above include (A) equipment that operates on DC power, such as clocks and audio equipment such as radio cassette recorders, and (B) equipment that operates on AC power, such as fans, juicers, mixers, or incandescent lamps. Another example of (5) above includes (C) equipment that operates on DC power converted from AC power, such as televisions, radios, stereos, or personal computers. Another example of (5) above includes (D) inverter-type equipment, including washing machines, refrigerators, air conditioners, microwave ovens, and fluorescent lamps. The above (D) equipment is equipment that operates on AC power that is first converted from AC power to DC power and then further converted from the DC power.

[0118] 11 is a perspective view of the electric power device 200 (holding device) according to the third embodiment. In the following description, the width direction of the electric power device 200 is referred to as the X direction or left-right direction. The depth direction of the electric power device 200 is referred to as the Y direction or front-rear direction. The height direction of the electric power device 200 is referred to as the Z direction or up-down direction.

[0119] The power device 200 has, for example, substantially the same external shape as the power device disclosed in International Publication No. 2020 / 235618. That is, the power device 200 includes a housing 202. The housing 202 is shaped like a substantially rectangular parallelepiped. As shown in FIGS. 12 and 13, the housing 202 has an internal space 204. A holding section 206 is provided in the internal space 204 of the housing 202. The holding section 206 is a slot for accommodating (holding) a power storage device 208 (item). The power storage device 208 is detachable from the holding section 206. A power system 210 is configured including the power device 200 and the power storage device 208. Note that FIG. 13 schematically illustrates the interior of the housing 202.

[0120] It is sufficient that at least one power storage device 208 is attached to the power device 200. When the power device 200 includes a plurality of power storage devices 208, it is sufficient that at least one of the plurality of power storage devices 208 is detachable from the power device 200. In this case, it is more preferable that the power storage device 208 is detachable from the power device 200 without using a separate work tool or the like. That is, the power storage device 208 is configured so that it can be freely attached and detached to and from the power device 200 without using a work tool or the like. Furthermore, "attachable and detachable to and from the power device 200" includes a case where the power storage device 208 is attached to the power device 200 and a case where the power storage device 208 is detached from the power device 200. In the following explanation, a case where one power storage device 208 is detachable from the power device 200 will be explained.

[0121] The power storage device 208 is a mobile battery that is detachable from the power device 200. The power storage device 208 has a substantially rectangular parallelepiped shape. The power storage device 208 is a rechargeable mobile battery. For example, a detachable lithium-ion battery pack is suitable for the power storage device 208. A handle 212 is provided on the top of the power storage device 208. A user can carry the power storage device 208 by gripping the handle 212. A power storage unit 214 is housed inside the power storage device 208. A female connector 216 (another connection part) is provided on the bottom of the power storage device 208. The connector 216 is also called a receptacle.

[0122] An opening 218 that communicates with the internal space 204 is formed in the upper part of the housing 202. A cover 220 that covers the opening 218 is provided in the upper part of the housing 202. An open button 222 is provided on the cover 220. When a user presses the open button 222, the cover 220 opens, and the outside of the housing 202 communicates with the internal space 204 (see FIGS. 12 and 13). With the cover 220 open, the user can attach or detach the power storage device 208 to or from the holder 206. Note that FIG. 11 shows a state in which the cover 220 is closed. FIGS. 12 and 13 show a state in which the cover 220 is open.

[0123] As shown in Fig. 11, the cover 220 is provided with an indicator 224 for indicating the remaining capacity of the power storage device 208. The indicator 224 may have the function of a switch that can be operated by a user. As shown in Figs. 11 and 12, of the four corners of the housing 202, recessed spaces recessed into the inside of the housing 202 are formed at three corners other than the corner where the cover 220 is provided. Handles 226 are provided at the three corners. The three handles 226 extend in the X direction.

[0124] A plurality of DC output terminals 228 and a plurality of AC output terminals 230 are provided at the top of the housing 202, between the cover 220 and one handle portion 226. The plurality of DC output terminals 228 are terminals for outputting DC power from the power device 200 to the outside of the power device 200. The plurality of DC output terminals 228 are, for example, USB terminals. A USB cable can be connected to the USB terminal. The plurality of AC output terminals 230 are terminals for outputting AC power from the power device 200 to the outside of the power device 200. The plurality of AC output terminals 230 are, for example, sockets for commercial power plugs. Each of the plurality of DC output terminals 228 and the plurality of AC output terminals 230 is covered with a cap 232. The plurality of caps 232 protect the plurality of DC output terminals 228 and the plurality of AC output terminals 230.

[0125] FIG. 13 is a diagram illustrating attachment and detachment of the power storage device 208 to and from the holding portion 206. Note that FIG. 13 schematically illustrates the interior of the housing 202. The shape of the holding portion 206 is a substantially rectangular parallelepiped that matches the shape of the power storage device 208. The shape of the holding portion 206 is a cylindrical shape with a bottom. The holding portion 206 is arranged along the Z direction in the internal space 204 of the housing 202. An opening at the upper end of the holding portion 206 faces the opening 218 of the housing 202. When the cover 220 (see FIG. 12 ) is open, if a user inserts the power storage device 208 into the holding portion 206 with the bottom of the power storage device 208 facing the holding portion 206, the power storage device 208 moves downward within the holding portion 206. The bottom of the power storage device 208 comes into contact with a bottom plate 234 that is the lower end of the holding portion 206, and the power storage device 208 is accommodated in the holding portion 206.

[0126] An insertion hole 236 is formed in the bottom plate 234 of the holding portion 206. When the power storage device 208 is accommodated in the holding portion 206, the connector 216 of the power storage device 208 and the insertion hole 236 face each other.

[0127] In the internal space 204 of the housing 202, a connector 238 (connection portion) is provided below the holding portion 206. The connector 238 is a male connector. The connector 238 is also referred to as a plug. The connector 238 is located below the holding portion 206 so as to be insertable through the insertion hole 236 of the holding portion 206. The connector 238 is capable of fitting (connecting) with the connector 216 of the power storage device 208.

[0128] As shown in FIGS. 13 to 14B, a connector displacement mechanism 240 (power transmission mechanism) is provided in the internal space 204 of the housing 202. When the power storage device 208 is accommodated in the holding portion 206, the connector displacement mechanism 240 displaces the connector 238 relative to the connector 216 of the power storage device 208, thereby connecting the connector 238 and the connector 216. The connector displacement mechanism 240 is a mechanism that utilizes, for example, the terminal displacement mechanism disclosed in WO 2019 / 064556. The connector displacement mechanism 240 has an operating lever 242, two link plates 244, two connecting walls 245, and a connector holding member 246.

[0129] The operating lever 242 extends in the X direction above the holding portion 206. Both ends of the operating lever 242 are bent and extend in the Z direction and the Y direction. Therefore, the operating lever 242 is a U-shaped lever. Note that one end of the operating lever 242 is not shown in Figure 13.

[0130] Each of the bent portions on both sides of the operating lever 242 is pivotally supported by a pivot shaft 248 extending in the X direction. Each of the two pivot shafts 248 is connected to a support stay (not shown) fixed to the holding portion 206. Both ends of the operating lever 242 are connected to one ends of two link plates 244 via connecting pins 250 extending in the X direction. The two link plates 244 extend in the Z direction. The other ends of the two link plates 244 are connected to one ends of a connecting wall 245 via connecting pins 247 extending in the X direction. The other ends of the two connecting walls 245 are connected to both ends of a connector holding member 246 extending in the X direction. The connector holding member 246 is a plate-shaped member extending in the X direction below the holding portion 206. The connector 238 is attached to the center of the upper surface of the connector holding member 246.

[0131] When the cover 220 is open and the operating lever 242 is positioned at the angle position shown in FIG. 14A , the user can insert the power storage device 208 into the holding portion 206. After inserting the power storage device 208 into the holding portion 206 and storing the power storage device 208 in the holding portion 206, the user operates the operating lever 242 in the direction of arrow A in FIG. 14A . This causes the operating lever 242 to rotate in the direction of arrow A around the rotation shaft portion 248. The two link plates 244, the two connecting pins 247, and the two connecting walls 245 convert the rotation force of the operating lever 242, transmitted via the connecting pin 250, into a force along the Z direction. As a result, the two link plates 244, the two connecting pins 247, and the two connecting walls 245 are pulled upward. As the two connecting walls 245 move, the connector holding member 246 rises. The connector 238 attached to the connector holding member 246 passes through the insertion hole 236 and moves up.

[0132] 14B, the two link plates 244, the two connecting pins 247, and the two connecting walls 245 move further upward. As a result, the connector 238 moves upward and is fitted (connected) to the connector 216. Therefore, before the connector 216 and the connector 238 are fitted together, the bottom of the power storage device 208 comes into contact with the bottom plate 234 of the holder 206. That is, before the two connectors 216 and 238 come into contact with each other, the bottom of the power storage device 208 comes into contact with the bottom plate 234. In other words, the bottom of the power storage device 208 is held by the holder 206 before the connector 216 and the connector 238 come into contact with each other. This prevents the connector 238 from being damaged by an impact from the power storage device 208.

[0133] Note that restricting member 249 (pressing portion) may be operated in conjunction with the rotation of operating lever 242. Restricting member 249 is held by holding portion 206. When operating lever 242 rotates to the angle position shown in FIG. 14B, restricting member 249 is pressed against the upper portion of power storage device 208 from above. This restricts displacement of power storage device 208 in the Z direction.

[0134] When the user removes the power storage device 208 from the power device 200, the user presses the open button 222 to open the cover 220. The user rotates the operation lever 242 from the angle position shown in FIG. 14B to the angle position shown in FIG. 14A. When the operation lever 242 rotates in the direction opposite to the direction of arrow A, the two link plates 244, the two connecting pins 247, and the two connecting walls 245 descend. This also causes the connector holding member 246 and the connector 238 to descend. As a result, the mated state (connected state) between the connector 238 and the connector 216 is released. Note that the restricting member 249 moves away from the power storage device 208 in conjunction with the rotation of the operation lever 242, thereby releasing the restriction on the displacement of the power storage device 208 in the Z direction. Thereafter, the user grasps the handle 212 of the power storage device 208 and pulls up the power storage device 208 in the Z direction, thereby removing the power storage device 208 from the power device 200.

[0135] FIG. 15 is a configuration diagram of a power system 210. In addition to a housing 202 (see FIG. 11), a holder 206, and a connector 238, the power device 200 further includes a detection unit 251, an electromechanical conversion unit 252, an AC / DC conversion unit 254, a control device 256 (wearing device), a power conversion unit 258 (electrical operation unit), a notification unit 260, and an operation input unit 262. In addition to a power storage unit 214 and a connector 216, the power storage device 208 further includes an interrupter 264 and a BMU (battery management unit) 266. Note that the DC output terminal 228 (see FIG. 11) is not shown in FIG. 15.

[0136] The detector 251 sequentially detects the connection state between the connector 238 and the connector 216. The detector 251 sequentially outputs the detection results to the control device 256.

[0137] The electromechanical converting unit 252 converts kinetic energy accompanying the movement of the power storage device 208 into electrical energy (power) when the power storage device 208 is attached to or detached from the holding unit 206. Note that, as will be described later, the electromechanical converting unit 252 can also function as an electromechanical converting device 268 independent of the power device 200 and the power storage device 208. That is, the electromechanical converting unit 252 (electromechanical converting device 268) may be configured to be attachable to or detachable from the power device 200 or the power storage device 208.

[0138] Specifically, as shown in FIG. 13, the electromechanical transducer 252 includes an input unit 270 and a transducer 272.

[0139] The input unit 270 receives kinetic energy accompanying the movement of the power storage device 208 when the power storage device 208 is attached to or detached from the holding unit 206. Therefore, it is desirable that the input unit 270 be disposed in a position where it can come into contact with the power storage device 208 when the power storage device 208 is attached to or detached from the holding unit 206. In other words, it is desirable that the input unit 270 be positioned on the movement trajectory of the power storage device 208 when the power storage device 208 is attached to or detached from the holding unit 206.

[0140] The conversion unit 272 converts the kinetic energy input to the input unit 270 into electrical energy.

[0141] FIG. 13 illustrates, as a specific example of the electromechanical conversion unit 252, a case in which the input unit 270 is a roller 274 and the conversion unit 272 is a generator 276 (rotating electric machine) connected to the roller 274. As shown in FIG. 13, a hole 278 is formed in the side wall of the holding unit 206. A portion of the roller 274 passes through the hole 278 and enters the inside of the holding unit 206. A rotating shaft 280 of the generator 276 extends in the Y direction. The roller 274 is connected coaxially with the rotating shaft 280. The roller 274 is rotatable around the rotating shaft 280.

[0142] When the user inserts the power storage device 208 into the holder 206, the rollers 274 come into contact with the side surfaces of the power storage device 208. As the power storage device 208 moves toward the bottom plate 234 of the holder 206, the rollers 274 come into contact with the side surfaces of the power storage device 208 and rotate. The generator 276 generates electricity based on the rotation of the rollers 274 and the rotating shaft 280 and outputs AC power (electrical energy). When the bottom of the power storage device 208 comes into contact with the bottom plate 234 of the holder 206, the movement of the power storage device 208 stops. As a result, the rollers 274 and the rotating shaft 280 stop rotating. As a result, the generator 276 stops generating power.

[0143] Furthermore, when the user pulls out the power storage device 208 from the holder 206, the roller 274 comes into contact with the side surface of the power storage device 208 and rotates as the power storage device 208 moves upward. The generator 276 generates electricity based on the rotation of the roller 274 and the rotating shaft 280 and outputs AC power. When the power storage device 208 is pulled out of the holder 206, the roller 274 comes out of contact with the power storage device 208 and stops rotating. When the roller 274 and the rotating shaft 280 stop rotating, the generator 276 stops generating power.

[0144] 13 and 15, the AC / DC converter 254 converts the AC power converted by the generator 276 into DC power. The AC / DC converter 254 is, for example, a diode bridge.

[0145] When the power storage device 208 is attached to the holder 206 and the connector 238 and the connector 216 are electrically connected, the power storage device 208 and the power conversion unit 258 can exchange power via the power transmission path 282. That is, the positive electrode of the power storage device 208 is electrically connected to the positive electrode of the input side (primary side) of the power conversion unit 258 via one power line 284. The negative electrode of the power storage device 208 is electrically connected to the negative electrode of the input side of the power conversion unit 258 via the other power line 286. An AC output terminal 230 is electrically connected to the output side (secondary side) of the power conversion unit 258. An external load 288 is detachably connected to the AC output terminal 230. Therefore, the power device 200 functions as a power supply device that supplies power to the load 288. A typical example of the load 288 is an AC power consuming device such as a home appliance.

[0146] The power conversion unit 258 includes an inverter. The power conversion unit 258 converts DC power supplied from the power storage device 208 into AC power. The load 288 is driven by the AC power supplied from the power conversion unit 258. Furthermore, when the load 288 is a rotating electric machine or the like and is regeneratively driven (power generation), the power conversion unit 258 converts the AC power supplied from the load 288 into DC power. The power storage device 208 stores the DC power supplied from the power conversion unit 258.

[0147] The control device 256 is a power supply device for starting up the power storage device 208. The control device 256 is also a control device for controlling each part of the power device 200 and the power storage device 208. The control device 256 may be detachable from the power device 200. Alternatively, the control device 256 may be fixed to the power device 200.

[0148] The control device 256 has a DC power conversion unit 290 (electrical operation unit), an ECU (electronic control unit) 292, and a sub-battery 294 (another power storage unit, battery). The ECU 292 (computer) realizes the functions of a control unit 298, an activation command unit 300, and a communication unit 302 by reading and executing programs stored in a storage unit 296 (storage medium).

[0149] The two power lines 284, 286 are electrically connected to the input side of a DC power conversion unit 290. The DC power conversion unit 290 is a DC / DC converter. The DC power conversion unit 290 converts the DC voltage of the DC power supplied from the power storage device 208 into a low DC voltage. The DC power conversion unit 290 supplies the converted DC voltage to an ECU 292.

[0150] The sub-battery 294 supplies DC power to the ECU 292. The sub-battery 294 also stores (charges) the DC power converted by the AC / DC converter 254. The sub-battery 294 can be charged with the DC power converted by the DC power converter 290.

[0151] The activation command unit 300 generates an activation signal (command) for putting the power storage device 208 into a usable state. Specifically, the activation command unit 300 generates, based on a DC voltage supplied from the sub-battery 294 to the ECU 292, a voltage equivalent to the DC voltage as an activation signal. The activation command unit 300 supplies the generated activation signal to the power storage device 208. The activation signal, which is a start-up command, is low-voltage power (low voltage) for operating an activation control unit 304 inside the power storage device 208. The activation signal is not limited to a voltage signal (power signal) based on the voltage of the sub-battery 294. The activation signal may be any command signal for switching the power storage device 208 to an active state.

[0152] The control unit 298 controls each unit of the power device 200, including the inside of the control device 256. For example, the control unit 298 controls the operation of the power conversion unit 258. The communication unit 302 transmits and receives signals or information to and from the power storage device 208.

[0153] The notification unit 260 notifies various types of information to the outside based on instructions from the ECU 292. The notification unit 260 is, for example, the indicator 224 (see FIG. 11).

[0154] The operation input unit 262 receives an operation input from the user and outputs the content of the received operation input to the ECU 292 .

[0155] The power storage unit 214 of the power storage device 208 is composed of a plurality of cells connected in series. The power storage unit 214 is a secondary battery. The interrupter 264 is a switching element such as a contactor or a semiconductor switch. The power storage unit 214 and the interrupter 264 are provided in series with the power conversion unit 258. The conduction state of the interrupter 264 is determined by control from the BMU 266. The BMU 266 detects the state of the power storage unit 214 and notifies the ECU 292 of the detected state. The operating state of the BMU 266 is determined by control from the ECU 292. The BMU 266 controls the conduction state of the interrupter 264 in accordance with the determined operating state.

[0156] BMU 266 monitors the charging / discharging status of power storage device 208, the amount of power stored in power storage unit 214, the temperature, etc. BMU 266 shares the monitoring results with ECU 292. Furthermore, BMU 266 controls interrupter 264 and the like based on a control command from ECU 292 or the above monitoring results, thereby controlling charging / discharging between power storage unit 214 and the outside of power storage device 208.

[0157] The BMU 266 is a computer such as a processor, etc. The BMU 266 reads and executes the programs stored in the storage unit 306, thereby realizing the functions of the activation control unit 304, the communication processing unit 308, and the battery control unit 310.

[0158] Based on the activation signal supplied from the activation command unit 300, the activation control unit 304 performs control to switch the state of the power storage device 208 from an inactive state in which the power storage unit 214 cannot be electrically connected to the outside of the power storage device 208 to an active state in which the power storage unit 214 can be electrically connected to the outside of the power storage device 208. Specifically, the activation control unit 304 turns on the interrupter 264 in response to the supply of the activation signal. Furthermore, the activation control unit 304 turns off the interrupter 264 when the supply of the activation signal is stopped. Therefore, in the inactive state, power cannot be output from the power storage unit 214 to the outside of the power storage device 208. Furthermore, in the active state, power can be output from the power storage unit 214 to the outside of the power storage device 208.

[0159] Specifically, when the activation control unit 304 detects that the activation signal is in a significant state, it turns on the interrupter unit 264, thereby switching the state of the power storage device 208 to the active state. For example, when the signal level of the activation signal is equivalent to the signal level of the voltage output from the sub-battery 294, the activation control unit 304 determines that the activation signal is in a significant state (a state in which the activation signal is being supplied), and turns on the interrupter unit 264.

[0160] Furthermore, activation control unit 304 detects that the activation signal has become inactive, and switches power storage device 208 to an inactive state. For example, when the signal level of the activation signal becomes a level below the threshold (approximately 0 level), activation control unit 304 determines that the activation signal is inactive (a state in which the activation signal is not being supplied), and turns off interrupter 264.

[0161] In this way, the on / off unit 264 and the activation control unit 304 function as an activation processing unit 312 that switches the power storage device 208 between an activated state and a deactivated state.

[0162] Battery control unit 310 detects, for example, changes in the state (voltage, SOC, etc.) of each cell of power storage unit 214 and adjusts the charge state of each cell to be uniform. Communication processing unit 308 transmits and receives signals or information to and from ECU 292.

[0163] Next, modified examples (first to eighth modified examples) of the third embodiment will be described with reference to Figs. 16A to 24. These modified examples are modified examples of the power device 200, the power storage device 208, or the power system 210. In the description of each modified example, the same components as those in Figs. 11 to 15 are designated by the same reference numerals, and detailed description thereof will be omitted.

[0164] 16A and 16B are diagrams showing a first modified example. The first modified example differs from the configurations shown in FIGS. 13 to 14B in that the configuration of connector displacement mechanism 240 has been changed. Connector displacement mechanism 240 in the first modified example is a mechanism that utilizes, for example, the power transmission device disclosed in International Publication No. 2020 / 235618.

[0165] The connector displacement mechanism 240 is disposed below the holding part 206 so as to face the insertion hole 236 of the holding part 206. In the first modified example, the insertion hole 236 is formed larger than in the configurations of FIGS. 13 to 14B. The connector displacement mechanism 240 has a roller 320, an arm 322, a power transmission part 324, and a connector displacement part 326.

[0166] The power transmission unit 324 is disposed below the holding unit 206 so as to face the insertion hole 236 of the holding unit 206. The power transmission unit 324 extends in the Y direction. The arm 322 extends obliquely upward from the power transmission unit 324. The arm 322 is inserted through the insertion hole 236 and enters the inside of the holding unit 206. The arm 322 is rotatable about a rotation axis (not shown) extending in the Y direction. The roller 320 is connected to the tip of the arm 322. Therefore, when the power storage unit 214 is not attached to the holding unit 206, the roller 320 is located inside the holding unit 206. The connector displacement unit 326 is connected to the power transmission unit 324 with a gap in the Y direction from the arm 322. The connector displacement unit 326 extends in the Z direction. The connector displacement unit 326 is displaceable in the Z direction. The connector 238 is connected to the upper end of the connector displacement portion 326 .

[0167] In the first modified example, when the power storage device 208 is accommodated in the holding portion 206, the connector displacement mechanism 240 transmits a force acting on the connector displacement mechanism 240 from the power storage device 208 to the connector 238, thereby lifting the connector 238. This causes the connector 238 and the connector 216 to be connected to each other.

[0168] Specifically, as shown in FIG. 16A, when the bottom of the power storage device 208 is not in contact with the roller 320 of the connector displacement mechanism 240, the arm 322 is inserted inside the holding portion 206, and the roller 320 is positioned inside the holding portion 206.

[0169] When the user inserts the power storage device 208 into the holder 206 and the bottom of the power storage device 208 abuts against the roller 320, the roller 320 receives a pressing force from the bottom of the power storage device 208. The pressing force from the power storage device 208 is input to the arm 322 via the roller 320. As a result, the arm 322 rotates in the direction of arrow B in FIG. 16B around the rotation axis. A spring (not shown) is provided in the power transmission unit 324. The spring stores a portion of the kinetic energy (energy) transmitted from the power storage device 208 to the arm 322. Thereafter, as shown in FIG. 16B , the power transmission unit 324 outputs (releases) the energy stored in the spring to the connector displacement unit 326, thereby moving the connector displacement unit 326 upward. As the connector displacement unit 326 moves upward, the connector 238 passes through the insertion hole 236 and rises. This connects connector 238 and connector 216. That is, in the first modified example as well, the bottom of power storage device 208 is held by holding portion 206 before connector 238 and connector 216 come into contact with each other. This makes it possible to prevent connector 238 from being damaged by an impact from power storage device 208.

[0170] Furthermore, when the user pulls out power storage device 208 from holding portion 206, the connection between connector 238 and connector 216 is released. When power storage device 208 is pulled out from holding portion 206, roller 320 is released from the pressing force of power storage device 208. As a result, roller 320 and arm 322 return to the initial positions shown in FIG. 16A due to the restoring force of the spring. Furthermore, connector displacement portion 326 (see FIG. 16B) and connector 238 move downward.

[0171] 17A to 18 are diagrams showing a second modified example. The second modified example differs from the configurations shown in Figures 13 to 14B in that the configuration of connector displacement mechanism 240 has been changed. Connector displacement mechanism 240 in the second modified example is a mechanism that utilizes the connector unit disclosed in WO 2022 / 075427, for example.

[0172] The connector displacement mechanism 240 is provided below the holding unit 206. The connector displacement mechanism 240 has a base plate 330, a first rack 332, a first pinion 334, a second pinion 336, and a motor 338. The base plate 330 is attached to the bottom plate 234 of the holding unit 206. The base plate 330 extends downward from the bottom plate 234. The motor 338 is disposed on the base plate 330. The first pinion 334 is coaxially attached to a rotation shaft portion 340 of the motor 338. The first rack 332 extends in the Z direction. The connector 238 is connected to the tip end of the first rack 332. The first rack 332 is supported by a support portion (not shown) provided on the base plate 330 so as to be slidable in the Z direction. The second pinion 336 meshes with the first rack 332 and the first pinion 334. In the second modified example, the second pinion 336 may be omitted, and the first rack 332 and the first pinion 334 may be configured to mesh with each other.

[0173] As shown in FIG. 17A, when the user inserts the power storage device 208 into the holder 206 and the power storage device 208 is accommodated in the holder 206, the connector 216 and the connector 238 face each other as shown in FIG. 17B. Next, as shown in FIG. 18, when DC power is supplied from the sub-battery 294 to the motor 338, the motor 338 is driven. When the rotation shaft 280 is rotated by the driving of the motor 338, the rotation force of the rotation shaft 280 is transmitted to the first rack 332 via the first pinion 334 and the second pinion 336. The first rack 332 converts the rotation force transmitted from the second pinion 336 into a force in the Z direction. As a result, the first rack 332 and the connector 238 rise toward the power storage device 208. As a result, the connector 238 is inserted through the insertion hole 236 (see FIG. 13) and connected to the connector 216.

[0174] A fan 342 is attached to base plate 330. Fan 342 is driven by DC power supplied from sub-battery 294. Fan 342 blows cooling air into the inside of holding portion 206, thereby cooling power storage device 208 housed in holding portion 206.

[0175] When the user pulls out the power storage device 208 from the holder 206, the connection between the connector 238 and the connector 216 is released. Next, when DC power is supplied from the sub-battery 294 to the motor 338, the motor 338 is driven. In this case, the motor 338 rotates the rotating shaft 280 so that the connector 238 and the first rack 332 descend. The rotational force of the rotating shaft 280 is transmitted to the first rack 332 via the first pinion 334 and the second pinion 336. The first rack 332 converts the rotational force transmitted from the second pinion 336 into a force in the Z direction. As a result, the first rack 332 and the connector 238 return from the position shown in FIG. 18 to the initial position shown in FIG. 17A.

[0176] In this way, in the second modified example, the electric power stored in the sub-battery 294 may be supplied to the motor 338 and the fan 342. This allows the electric power generated by the electromechanical converter 252 to be used for purposes other than starting the power storage device 208. Also in the second modified example, the bottom of the power storage device 208 is held by the holder 206 before the connector 238 and the connector 216 come into contact with each other. Therefore, in the second modified example, it is possible to prevent the connector 238 from being damaged by an impact from the power storage device 208.

[0177] 19 is a diagram showing a third modified example. In the third modified example, a lever 350 (another input unit) serving as another input unit is connected to a rotation shaft 280 of a generator 276. When a user manually rotates lever 350, generator 276 generates electricity. In other words, generator 276 functions as a hand-cranked generator.

[0178] FIG. 20 is a diagram showing a fourth modified example. The fourth modified example shows a case in which an electromechanical transducer 268, which is the electromechanical transducer unit 252, is provided outside the power device 200 and the power storage device 208. The electromechanical transducer 268 has a generator 276 and a lever 352 (another input unit). The generator 276 is a DC generator. Alternatively, the generator 276 may be an AC generator. The lever 352 is connected to a rotation shaft 280 of the generator 276. When a user manually rotates the lever 352, the generator 276 generates power. That is, the generator 276 functions as a hand-cranked generator. The generator 276 supplies the generated power (DC power) to a sub-battery 294, charging the sub-battery 294. Alternatively, as indicated by the two-dot chain line, the generator 276 may supply the generated power to the power storage unit 214 of the power storage device 208 to charge the power storage unit 214. In this case, the power storage device 208 may have a connector 354 (another connection unit) such as an input terminal to receive power from the generator 276. The connector 354 may be, for example, a female connector such as a receptacle. The generator 276 may also be provided with a power storage unit 355 for storing the generated power.

[0179] FIG. 21 is a diagram illustrating a fifth modified example. The fifth modified example illustrates a case in which the electromechanical converter 252 is provided in the power storage device 208. As in the third modified example, the electromechanical converter 252 has a generator 276 and a lever 356 (another input unit). The generator 276 is a DC generator. Alternatively, the generator 276 may be an AC generator. The lever 356 is connected to a rotation shaft 280 of the generator 276. When a user manually rotates the lever 356, the generator 276 generates power. That is, the generator 276 functions as a hand-cranked generator. The generator 276 supplies the generated power (DC power) to the power storage unit 214, thereby charging the power storage unit 214.

[0180] 22A and 22B are diagrams showing a sixth modified example. In the sixth modified example, the holding portion 206 is configured to be movable in the Z direction. Therefore, in the sixth modified example, the connector displacement mechanism 240 is not provided inside the housing 202. Note that in FIGS. 22A and 22B, the holding portion 206 is shown to have a constant thickness.

[0181] In the sixth modified example, a support plate 360 ​​is disposed below the holding portion 206. The support plate 360 ​​extends in the X and Y directions. A connector 238 is disposed below the insertion hole 236 on the upper surface of the support plate 360. A plurality of spring members 362 are interposed between the bottom plate 234 of the holding portion 206 and the support plate 360. The plurality of spring members 362 extend upward. The holding portion 206 receives an upward elastic force from the spring members 362.

[0182] The electromechanical transducer 252 is arranged so as to be in contact with the holding unit 206. That is, the roller 274 of the input unit 270 is arranged so as to be in contact with the side plate of the holding unit 206. That is, when the holding unit 206 moves, the input unit 270 receives kinetic energy accompanying the movement of the holding unit 206. Therefore, in the sixth modified example, it is desirable that the input unit 270 is arranged at a position where it can come into contact with the holding unit 206 when the holding unit 206 moves. That is, it is desirable that the input unit 270 is located on the movement trajectory of the holding unit 206 when the holding unit 206 moves.

[0183] As shown in FIG. 22A , the user inserts power storage device 208 into holding portion 206 and pushes power storage device 208 into holding portion 206. As a result, power storage device 208 is housed in holding portion 206. Holding portion 206 descends due to the weight of power storage device 208 against the elastic forces of multiple spring members 362. At this time, holding portion 206 descends while slowing the moving speed of power storage device 208 due to the elastic forces from spring members 362. As a result, multiple spring members 362 are compressed downward. When the user further pushes power storage device 208 downward, connector 238 is inserted through insertion hole 236 and connected to connector 216, as shown in FIG. 22B . Therefore, in the sixth modification as well, the bottom of power storage device 208 is held by holding portion 206 before connector 238 and connector 216 come into contact with each other, so that connector 238 can be prevented from being damaged by an impact from power storage device 208. In this case, roller 274 rotates when holding portion 206 descends. Therefore, generator 276 generates electricity as roller 274 and rotating shaft portion 280 rotate.

[0184] When the user removes the power storage device 208 from the holder 206, the connection between the connector 238 and the connector 216 is released. Furthermore, the holder 206 is released from the state in which it is pressed by the power storage device 208. As a result, the plurality of spring members 362 expand upward, and the holder 206 rises so as to move away from the support plate 360. The roller 274 rotates when the holder 206 rises. Therefore, the generator 276 generates electricity as the roller 274 and the rotating shaft 280 rotate.

[0185] 23A and 23B are diagrams illustrating a seventh modified example. The seventh modified example differs from the sixth modified example in that an electromechanical transducer 252 is disposed below the holding part 206. That is, the seventh modified example differs from the sixth modified example in that one of the multiple spring members 362 is replaced with the electromechanical transducer 252. The electromechanical transducer 252 is not connected to the support plate 360.

[0186] Specifically, the electromechanical transducer 252 has a second rack 370, a third pinion 372 (power transmission unit), a fourth pinion 374 (power transmission unit), and a generator 276. The second rack 370, the third pinion 372, and the fourth pinion 374 configure the input unit 270. The second rack 370 is connected to the bottom plate 234 of the holder 206. The second rack 370 extends downward from the bottom plate 234 of the holder 206. The third pinion 372 is coaxially connected to the rotating shaft 280 of the generator 276. The fourth pinion 374 meshes with the third pinion 372 and the second rack 370. Note that in the seventh modified example, the fourth pinion 374 may be omitted, and the second rack 370 and the third pinion 372 may mesh with each other.

[0187] As shown in FIG. 23A , the user inserts power storage device 208 into holding portion 206 and pushes power storage device 208 into holding portion 206. As a result, power storage device 208 is accommodated in holding portion 206. Therefore, in the seventh modification, the bottom of power storage device 208 is held by holding portion 206 before connector 238 and connector 216 come into contact with each other. This makes it possible to prevent connector 238 from being damaged by an impact from power storage device 208. Thereafter, holding portion 206 descends due to the weight of power storage device 208 against the elastic force of spring member 362. At this time, holding portion 206 descends while decelerating power storage device 208 due to the elastic force of spring member 362. As a result, spring member 362 is compressed downward. Furthermore, second rack 370 descends together with holding portion 206. The fourth pinion 374 is engaged with the second rack 370 and the third pinion 372, and converts the downward moving force of the second rack 370 into rotational force. The generator 276 generates electricity as the rotational force is transmitted from the fourth pinion 374 to the third pinion 372 and the rotating shaft 280 rotates.

[0188] When the user further pushes power storage device 208 downward, connector 238 passes through insertion hole 236 and is connected to connector 216, as shown in FIG. 23B. At this time, holding portion 206 and second rack 370 stop descending (first position). Also, third pinion 372 and fourth pinion 374 stop rotating. This causes generator 276 to stop generating power.

[0189] When the user removes the power storage device 208 from the holder 206, the connection between the connector 238 and the connector 216 is released. Furthermore, the holder 206 is released from the state in which it is pressed by the power storage device 208. As a result, the spring member 362 extends upward, and the holder 206 rises so as to move away from the support plate 360. At this time, the second rack 370 rises together with the holder 206. The fourth pinion 374 converts the upward moving force of the second rack 370 into a rotational force. The generator 276 generates electricity using the rotational force transmitted from the fourth pinion 374 to the third pinion 372.

[0190] Thereafter, the holder 206 is supported above the support plate 360 ​​with the spring member 362 fully extended upward. That is, the holder 206 and the second rack 370 stop rising. As a result, the holder 206 and the second rack 370 return to the initial position (second position) shown in FIG. 23A. As a result, the third pinion 372 and the fourth pinion 374 stop rotating, and the generator 276 stops generating power.

[0191] FIG. 24 is a diagram showing an eighth modified example. The eighth modified example differs from the configuration of FIG. 15 in that a capacitor 380 (another power storage unit) is provided instead of the sub-battery. In the eighth modified example, a switch 382 (interrupter) and capacitor 380 are connected in series to AC / DC converter 254. Switch 382 is, for example, a switch that turns on and off in response to an operation input by a user via operation input unit 262. Switch 382 may be a switching element such as a contactor or a semiconductor switch. Various types of capacitors can be used for capacitor 380, including relatively large-capacity capacitors such as electric double-layer capacitors, and relatively small-capacity capacitors such as multilayer ceramic capacitors and electrolytic capacitors.

[0192] When switch 382 is on, DC power can be supplied from AC / DC converter 254 or DC power converter 290 to capacitor 380 to charge capacitor 380. DC power can also be supplied from capacitor 380 to ECU 292. Furthermore, by turning switch 382 off, it is possible to prevent capacitor 380 from discharging.

[0193] Next, the operation of the power system 210 including the power device 200 according to the third embodiment will be described with reference to Fig. 25. Note that this description of the operation is common to the configurations of the power system 210 described in Figs. 11 to 24.

[0194] First, in step S21 (first step), the user inserts the power storage device 208 into the holding section 206 of the power device 200.

[0195] In step S22 (second step), when the power storage device 208 is inserted into the holding unit 206, or when the holding unit 206 to which the power storage device 208 is attached is lowered, the electromechanical converting unit 252 generates power. Specifically, when the input unit 270 comes into contact with the moving power storage device 208 or the holding unit 206, the input unit 270 receives the kinetic energy of the power storage device 208 or the holding unit 206. The converting unit 272 converts the kinetic energy received by the input unit 270 into electrical energy. Specifically, the converting unit 272 generates power based on the kinetic energy to generate AC power.

[0196] In step S23 (third step), the AC / DC conversion unit 254 converts the AC power generated by the conversion unit 272 into DC power. The AC / DC conversion unit 254 supplies the converted DC power to the sub-battery 294 or the capacitor 380. As a result, the sub-battery 294 or the capacitor 380 is charged.

[0197] In step S24, the user operates operation input unit 262. Sub-battery 294 or capacitor 380 starts supplying DC power to each unit of power device 200, including ECU 292, based on the operation input at operation input unit 262. As a result, power device 200, including ECU 292, starts up.

[0198] Detection unit 251 sequentially detects the connection state between connector 216 of power storage device 208 and connector 238, and sequentially outputs the detection results to ECU 292. In step S25, control unit 298 of ECU 292 determines whether or not connector 238 and connector 216 are in a connected state (whether or not the connection has been completed) based on the detection result from detection unit 251.

[0199] If the detection result indicates that connector 238 and connector 216 are connected, control unit 298 determines that power storage device 208 is housed in holding unit 206 and that connector 238 and connector 216 are connected (step S25: YES). ECU 292 then proceeds to the process of step S26.

[0200] In step S26, the control unit 298 instructs the activation command unit 300 to generate an activation signal. Upon receiving the instruction from the control unit 298, the activation command unit 300 starts generating the activation signal based on the DC power (DC voltage) supplied from the sub-battery 294.

[0201] As a result, in step S27 (fourth step), the activation command section 300 starts supplying an activation signal to the activation control section 304.

[0202] In step S28 (fifth step), the activation control unit 304 switches the interrupter 264 from off to on based on the activation signal supplied from the activation command unit 300. As a result, the power storage device 208 switches from an inactive state to an active state. Furthermore, the BMU 266 executes a startup process for the power storage device 208, including an initialization process for the power storage device 208. As a result, the power storage device 208 starts up. Note that the execution of the startup process enables transmission and reception of various signals or information between the communication processing unit 308 and the communication unit 302.

[0203] In step S29, power storage device 208 starts supplying DC power from power storage unit 214 to the outside (power device 200).

[0204] In step S30, power conversion unit 258 converts DC power into AC power under the control of ECU 292. Power conversion unit 258 supplies external load 288 with the converted AC power.

[0205] Thereafter, if the user decides to stop driving the power device 200 (step S31: YES), in step S32, the user pulls out the power storage device 208 from the holding unit 206. This causes the connector 216 and the connector 238 to become disconnected. As a result, the supply of DC power from the power storage device 208 to the power device 200 is cut off. Therefore, the power device 200 switches from an activated state to a deactivated state. Furthermore, since the supply of an activation signal from the activation command unit 300 to the activation control unit 304 is cut off, the power storage device 208 switches from an activated state to a deactivated state.

[0206] In step S33, while the power storage device 208 is being removed from the holding unit 206, the input unit 270, which is in contact with the holding unit 206 or the power storage device 208, receives kinetic energy of the holding unit 206 or the power storage device 208. The conversion unit 272 converts the kinetic energy received by the input unit 270 into electrical energy. That is, the conversion unit 272 generates AC power.

[0207] In step S34, the AC / DC converter 254 converts the AC power generated by the converter 272 into DC power, and charges the sub-battery 294 or the capacitor 380 with the DC power.

[0208] In the third embodiment, the connector 238 is configured to allow the power storage device 208 to be attached and detached without requiring any special tools, etc. The third embodiment is also applicable to cases where the power storage device 208 is not frequently attached and detached to and from the connector 238.

[0209] In the third embodiment, the case where the power storage device 208 or the holding unit 206 moves up and down in the Z direction inside the housing 202 has been described. The holding unit 206 that holds the power storage device 208 can also move translationally or rotationally. Even in this case, the electromechanical converting unit 252 (electromechanical converting device 268) can receive the kinetic energy of the power storage device 208 or the holding unit 206 and convert it into electrical energy.

[0210] Furthermore, in the third embodiment, it has been described that the generator 276 can function as a hand-crank generator. That is, the case where the user causes the generator 276 to generate electricity using an upper limb such as a hand has been described. In the third embodiment, the generator 276 may generate electricity by receiving leg force (treading force) of the user. That is, the user may cause the generator 276 to generate electricity using a lower limb such as a foot.

[0211] In the third embodiment, the power system 210 is applicable to various power supply systems that supply power from at least one power storage device 208 to a load 288 or the like, or that charge at least one power storage device 208. The power system 210 can be installed in a home, an office, a public facility, or the like.

[0212] The power system 210 can also be applied to power supply systems for various types of mobile bodies. The various types of mobile bodies include mobile bodies that can accommodate people and mobile bodies that cannot accommodate people. Examples of such mobile bodies include vehicles, aircraft, flying bodies, and ships. Examples of vehicle power supply systems include power supply systems for electrically powered vehicles such as electric automobiles, and power supply systems for vehicles equipped with a drive motor such as hybrid vehicles. That is, the power system 210 can be applied to power supply systems for various types of vehicles such as unicycles, motorcycles, and four-wheeled vehicles. When the power system 210 is applied to a mobile body, the control device 256 may be configured to be detachable from the mobile body, as shown in FIGS. 15 and 24 .

[0213] The power system 210 can also be applied to a power supply system for various general-purpose devices. Specifically, the various general-purpose devices include (1) various chargers, (2) various dischargers, and (3) various types of work machines such as general-purpose implements, lawnmowers, tillers, and blowers. The various general-purpose devices also include (4) electric devices without motors such as floodlights and lighting equipment, and (5) various types of equipment installed in houses and buildings. Even in this case, the control device 256 may be configured to be detachable from the general-purpose devices, as shown in FIGS. 15 and 24.

[0214] (1) to (5) may be general-purpose equipment that does not require a human operator. (3) may be a work machine that does not require a human operator. Alternatively, (3) may be a work machine that requires a human operator. Furthermore, examples of (5) above include (A) equipment that operates on DC power, such as clocks and audio equipment such as radio cassette recorders, and (B) equipment that operates on AC power, such as fans, juicers, mixers, or incandescent lamps. Another example of (5) above includes (C) equipment that operates on DC power converted from AC power, such as televisions, radios, stereos, or personal computers. Another example of (5) above includes (D) inverter-type equipment, including washing machines, refrigerators, air conditioners, microwave ovens, and fluorescent lamps. The above (D) equipment is equipment that operates on AC power that is first converted from AC power to DC power and then further converted from the DC power.

[0215] Next, further modifications (9th to 18th modifications) of the first to third embodiments will be described with reference to FIGS. 26A to 41. Here, the 9th to 18th modifications will be described using the components described in the third embodiment (see FIGS. 11 to 25). In the description of the 9th to 18th modifications, detailed description of the modifications common to the third embodiment will be omitted. Furthermore, the 9th to 18th modifications can also be applied to the first and second embodiments (see FIGS. 1 to 10B).

[0216] 26A to 27 are diagrams showing a ninth modified example, which differs from the third embodiment (see FIGS. 11 to 25) in that the holder 206 is a tray 400.

[0217] The tray 400 is a housing section with a shallower bottom than the holder 206 of the third embodiment. The tray 400 holds the bottom of the power storage device 208. An insertion hole 404 is formed in a bottom plate 402 of the tray 400. The insertion hole 404 is formed to face the connector 216.

[0218] A spring section 410 (power transmission section, biasing section) is connected to the tray 400. The spring section 410 is a constant resistance spring (CR spring) serving as a constant force spring. The spring section 410 has a spring member 412 and a drum 414. The spring member 412 is wound around the drum 414. The tip of the spring member 412 is connected to the tray 400. The drum 414 is coaxially connected to the rotating shaft section 280 of the generator 276.

[0219] When the power storage device 208 is not attached to the power device 200, the tray 400 is positioned above and spaced from the support plate 360 ​​(see FIG. 26A, second position).

[0220] When the user inserts the power storage device 208 into the internal space 204, the power storage device 208 is placed on the tray 400. As a result, the power storage device 208 is held on the tray 400, and the connector 216 and the insertion hole 404 face each other.

[0221] When the power storage device 208 is placed on the tray 400, the power storage device 208 and the tray 400 descend due to the weight of the power storage device 208 (see FIG. 26B). Because the tip of the spring member 412 is connected to the tray 400, the drum 414 rotates as the tray 400 descends, and the spring member 412 is pulled downward from the drum 414. The rotation of the drum 414 rotates the rotating shaft 280, causing the generator 276 to generate electricity. The power generated by the generator 276 is stored in the sub-battery 294 or the capacitor 380.

[0222] When the power storage device 208 and the tray 400 are further lowered, the bottom plate 402 of the tray 400 comes into contact with the support plate 360 ​​(see FIG. 27 , first position). At this time, the connector 238 is inserted through the insertion hole 404 and connected to the connector 216. Furthermore, when the tray 400 comes into contact with the support plate 360, the movement of the tray 400 stops. This stops the rotation of the drum 414, and the power generation by the generator 276 also stops.

[0223] Furthermore, when the user pulls out the power storage device 208 from the tray 400, the connector 216 and the connector 238 are separated. As the power storage device 208 rises, the tray 400 is released from the weight of the power storage device 208. A spring force acts on the spring member 412 in the direction in which the spring member 412 is wound around the drum 414 (upward). As the tray 400 is released from the weight of the power storage device 208, the spring force of the spring member 412 causes the tray 400 to rise. Therefore, when the power storage device 208 is pulled out from the tray 400, the spring member 412 is wound around the drum 414, and the tray 400 rises to the position shown in FIG. 26A . While the drum 414 is rotating to wind up the spring member 412, the generator 276 generates electricity, and the generated power is stored in the sub-battery 294 or the capacitor 380.

[0224] In the ninth modification, because spring portion 410 is a constant force spring, when spring member 412 is pulled out from drum 414, the load (spring output) of spring member 412 is constant regardless of the amount of pull-out of spring member 412. This eliminates the need for a rack, pinion, other springs, dampers, etc. In addition, in the ninth modification, the bottom of power storage device 208 is held by tray 400 before connector 238 and connector 216 come into contact with each other, so that connector 238 can be prevented from being damaged by an impact from power storage device 208.

[0225] 28A to 29 are diagrams showing a tenth modified example. The tenth modified example differs from the ninth modified example (see FIGS. 26A to 27) in that the spring portion 410 and the generator 276 are not connected to each other.

[0226] In the tenth modification, similarly to the ninth modification, the tip of the spring member 412 of the spring portion 410 is connected to one side of the tray 400. In addition, a generator 276 is fixed to the other side of the tray 400.

[0227] A pinion 420 (power transmission unit) is coaxially coupled to the rotating shaft 280 of the generator 276. A rack 422 extends in the Z direction in the internal space 204 of the housing 202. The rack 422 extends in the Z direction between the side of the support plate 360 ​​and above the position (second position) of the tray 400 shown in FIG. 28A. The rack 422 is fixed to the housing 202 via a fixing member (not shown). The pinion 420 meshes with the rack 422.

[0228] In the tenth modification, as in the ninth modification, when the power storage device 208 is placed on the tray 400, the power storage device 208 and the tray 400 descend due to the weight of the power storage device 208 (see FIGS. 28A and 28B). At this time, the drum 414 rotates as the tray 400 descends, and the spring member 412 is drawn downward from the drum 414. Furthermore, the pinion 420 rotates as the tray 400 descends, and the rotating shaft 280 rotates, and the generator 276 generates electricity. The power generated by the generator 276 is stored in the sub-battery 294 or the capacitor 380. In other words, the power storage device 208 and the tray 400 descend such that the spring member 412 is drawn downward from the drum 414 and the pinion 420 moves while meshing with the rack 422.

[0229] When the power storage device 208 and the tray 400 are further lowered, the bottom plate 402 of the tray 400 comes into contact with the support plate 360, and the connector 238 passes through the insertion hole 404 and is connected to the connector 216 (see FIG. 29). Furthermore, the tray 400 comes into contact with the support plate 360, and the movement of the tray 400 stops. As a result, the rotation of the drum 414 and the rotation of the pinion 420 stop, and the power generation by the generator 276 also stops.

[0230] Furthermore, when the user pulls out the power storage device 208 from the tray 400, the connector 216 and the connector 238 separate, and the tray 400 is released from the weight of the power storage device 208. As a result, the tray 400 rises due to the spring force of the spring member 412. As the tray 400 rises, the pinion 420 also rises while rotating. As a result, the spring member 412 is wound around the drum 414, and the tray 400 rises to the position shown in FIG. 28A. When the tray 400 has risen to the position shown in FIG. 28A, the pinion 420 stops rotating. The generator 276 generates electricity while the pinion 420 is rotating, and stores the generated electricity in the sub-battery 294 or the capacitor 380.

[0231] 30A to 31 are diagrams showing an eleventh modified example. The eleventh modified example differs from the ninth and tenth modified examples (see FIGS. 26A to 29) in that the spring portion 410 and the generator 276 are connected to the tray 400.

[0232] In the eleventh modification, a generator 276 is fixed to one side of the tray 400. A drum 414 of a spring portion 410 is coaxially connected to a rotating shaft portion 280 of the generator 276. A tip of the spring member 412 is fixed to a fixing portion 430 located above the tray 400. The fixing portion 430 is fixed to the housing 202 via a fixing member (not shown).

[0233] In the eleventh modification, similarly to the ninth and tenth modifications, when the power storage device 208 is placed on the tray 400, the power storage device 208 and the tray 400 descend due to the weight of the power storage device 208 (see FIGS. 30A and 30B ). As described above, the drum 414 of the spring portion 410 is connected to the rotating shaft portion 280 of the generator 276 fixed to the tray 400. Furthermore, the tip of the spring member 412 is fixed to the fixing portion 430 located above the tray 400. Therefore, when the tray 400 descends, the spring member 412 is pulled out from the drum 414. As the spring member 412 is pulled out, the drum 414 rotates, which in turn rotates the rotating shaft portion 280, causing the generator 276 to generate electricity. The power generated by the generator 276 is stored in the sub-battery 294 or the capacitor 380.

[0234] When the power storage device 208 and the tray 400 are further lowered, the bottom plate 402 of the tray 400 comes into contact with the support plate 360, and the connector 238 is inserted through the insertion hole 404 and connected to the connector 216 (see FIG. 31). When the tray 400 comes into contact with the support plate 360, the movement of the tray 400 stops. This stops the rotation of the drum 414, and the power generation by the generator 276 also stops.

[0235] Furthermore, when the user pulls out the power storage device 208 from the tray 400, the connector 216 and the connector 238 separate, and the tray 400 is released from the weight of the power storage device 208. The spring portion 410 is connected to the tray 400 via the generator 276. Furthermore, the tip of the spring member 412 is fixed to the fixing portion 430. Therefore, when the tray 400 is released from the weight of the power storage device 208, the drum 414 rotates to wind up the spring member 412. As a result, the tray 400 is raised by the spring force of the spring member 412, and the generator 276 generates electricity by the rotation of the rotating shaft portion 280 accompanying the rotation of the drum 414. The generated electricity is stored in the sub-battery 294 or the capacitor 380. When the tray 400 is raised to the position (second position) shown in FIG. 30A , the spring member 412 is wound up on the drum 414, and the generator 276 stops generating electricity.

[0236] 32A to 34B are diagrams showing a twelfth modified example, which differs from the ninth to eleventh modified examples (see FIGS. 26A to 31) in that a lifting mechanism 440 for lifting and lowering the tray 400 is provided.

[0237] In the twelfth modification, a generator 276 is fixed to a support plate 360. A drum 414 of a spring portion 410 is coaxially connected to a rotating shaft portion 280 of the generator 276.

[0238] The lifting mechanism 440 is provided between the tray 400 and the spring portion 410. The lifting mechanism 440 has a first pulley 442, a second pulley 444, and a belt 446. The first pulley 442 is disposed above the tray 400, the generator 276, and the spring portion 410. The first pulley 442 is rotatably fixed to a fixed portion 448. The fixed portion 448 is fixed to the housing 202 via a fixing member (not shown). The second pulley 444 is coaxially connected to the rotating shaft portion 280 and the drum 414. The belt 446 is looped between the first pulley 442 and the second pulley 444.

[0239] One side of the tray 400 is fixed to a belt 446. The tray 400 is fixed to the belt 446 at a position shown in Fig. 32A so as to be connected to the belt 446 at a location adjacent to a first pulley 442. The tip of the spring member 412 is fixed to the belt 446. The tip of the spring member 412 is fixed to the belt 446 at a position shown in Figs. 32A and 32B so as to be connected to the belt 446 at a location adjacent to a second pulley 444.

[0240] In the twelfth modification, similarly to the ninth to eleventh modifications, when the power storage device 208 is placed on the tray 400, the power storage device 208 and the tray 400 descend due to the weight of the power storage device 208 (see FIGS. 32A and 33A). As the power storage device 208 and the tray 400 descend, the belt 446 rotates, and the first pulley 442 and the second pulley 444 rotate, respectively. As the second pulley 444 rotates, the rotating shaft 280 and the drum 414 also rotate. As a result, the spring member 412 is pulled upward from the drum 414 (see FIGS. 32B to 33B). Furthermore, the generator 276 generates electricity by the rotation of the rotating shaft 280, and stores the generated electricity in the sub-battery 294 or the capacitor 380.

[0241] As the power storage device 208 and the tray 400 move further downward, the bottom plate 402 of the tray 400 comes into contact with the support plate 360, and the connector 238 passes through the insertion hole 404 and is connected to the connector 216 (see FIG. 34A). When the tray 400 comes into contact with the support plate 360, the movement of the tray 400 stops. This stops the rotation of the first pulley 442, the second pulley 444, and the belt 446. As a result, the tip of the spring member 412 is pulled upward from the drum 414 to a predetermined height, and power generation by the generator 276 also stops.

[0242] Furthermore, when the user pulls out the power storage device 208 from the tray 400, the connector 216 and the connector 238 separate, and the tray 400 is released from the weight of the power storage device 208. When the tray 400 is released from the weight of the power storage device 208, the drum 414 rotates to wind up the spring member 412. As a result, the belt 446 connected to the tip of the spring member 412 rotates in the opposite direction to the direction when the power storage device 208 and the tray 400 are lowered (see FIGS. 32A to 34B). As a result, the first pulley 442 and the second pulley 444 also rotate in the opposite direction to the direction when the power storage device 208 and the tray 400 are lowered. Therefore, the tray 400 is raised by the rotation of the belt 446 due to the spring force of the spring member 412. Furthermore, the generator 276 generates electricity by the rotation of the rotating shaft 280 due to the rotation of the drum 414. The generated power is stored in the sub-battery 294 or the capacitor 380. When the tray 400 rises to the position shown in Fig. 32A, the spring member 412 is wound around the drum 414. This stops the rotation of the first pulley 442, the second pulley 444, and the belt 446, and the generator 276 stops generating power.

[0243] In the twelfth modification, when power storage device 208 is held at an angle, belt 446 is also arranged at an angle. This allows belt 446 to function as a belt conveyor, thereby reducing the frictional force of belt 446.

[0244] 35 is a diagram showing a thirteenth modified example. In the thirteenth modified example, a recoil unit 450 (another input unit) is provided in the power device 200. The recoil unit 450 is installed, for example, on the outer surface of the housing 202. The recoil unit 450 is connected to the rotating shaft unit 280 of the generator 276.

[0245] Recoil portion 450 has a cover 452, a pulley 454, a string 456, and a lever 458. Cover 452 is attached to the outer surface of housing 202. Pulley 454 is disposed inside cover 452. Pulley 454 is coaxially connected to rotating shaft portion 280. String 456 is wound around pulley 454. Lever 458 is connected to the tip of string 456 pulled out from pulley 454. Lever 458 is provided on the outside of cover 452.

[0246] When the user manually pulls lever 458, string 456 is pulled out from pulley 454. Pulling out string 456 causes pulley 454 to rotate. Rotation of pulley 454 causes rotation of rotating shaft 280, causing generator 276 to generate electricity. Generator 276 stores the generated electricity in sub-battery 294 or capacitor 380.

[0247] FIG. 36 is a diagram illustrating a fourteenth modified example. In the fourteenth modified example, similar to the thirteenth modified example, a recoil portion 450 is provided on the side surface of the housing 202 of the power device 200. In the fourteenth modified example, when a user manually pulls the lever 458, the string 456 is pulled out from the pulley 454, causing the pulley 454 to rotate. The rotation of the pulley 454 causes the rotation shaft portion 280 to rotate, causing the generator 276 to generate electricity. The generator 276 stores the generated power in the sub-battery 294 or the capacitor 380. Note that the fourteenth modified example illustrates a case where the generator 276 is a DC generator. If the generator 276 is an AC generator, the power generated by the generator 276 is converted into DC power by the AC / DC converter 254 (see FIG. 35) and then stored in the sub-battery 294 or the capacitor 380.

[0248] 37A and 37B are diagrams showing a fifteenth modified example, in which a generator 276 generates electricity in conjunction with the operation of the connector displacement mechanism 240.

[0249] 37A, the rotation shaft 248 that pivotally supports the operating lever 242 also serves as the rotation shaft 280. In the example of FIG. 37A, when the operating lever 242 rotates around the rotation shaft 248, the rotation shaft 280, which is the rotation shaft 248, rotates, and the generator 276 generates electricity.

[0250] In the example of FIG. 37B, one of the two connecting walls 245 is configured as a rack 460. A generator 276 is disposed near the rack 460. A pinion 462 is coaxially connected to a rotating shaft portion 280 of the generator 276. The pinion 462 meshes with the rack 460.

[0251] 37B, when rack 460, which is one of connecting walls 245, moves up and down, pinion 462 that meshes with rack 460 rotates. The rotation of pinion 462 causes rotation shaft portion 280 to rotate, causing generator 276 to generate electricity.

[0252] In the fifteenth modified example, in both the examples of FIG. 37A and FIG. 37B, the generator 276 can store the generated electric power in the sub-battery 294 or the capacitor 380.

[0253] 38 is a configuration diagram showing a 16th modification. In the 16th modification, another switch 470 is connected in parallel to the switch 382 and the capacitor 380 between the AC / DC converter 254 and the switch 382 and the capacitor 380.

[0254] In the sixteenth modification, the amount of electric power (amount of regenerated electric power) generated by the generator 276 can be changed by controlling the on / off of the two switches 382, ​​470. The on / off of the switches 382, ​​470 may be controlled by the control unit 298 of the ECU 292. Alternatively, the user may operate the operation input unit 262, and the control unit 298 may control the on / off of the switches 382, ​​470 based on the content of the operation input. Alternatively, the switches 382, ​​470 may be turned on / off in accordance with the operation input of the operation input unit 262 by the user.

[0255] The reason why the amount of regenerative power is made variable is as follows.

[0256] A certain level of durability is required for connector 216 of power storage device 208 and connector 238 of power device 200. If power storage device 208 is inserted into power device 200 at a relatively high speed, connectors 216, 238 may wear out, potentially causing failure of connectors 216, 238. Therefore, as described above, in power device 200, when power storage device 208 is attached, power storage device 208 is temporarily held by holder 206, and then holder 206 is moved (lowered) relatively to connect two connectors 216, 238.

[0257] The relative movement speed of the holding unit 206 and the power storage device 208 varies depending on the force applied when the user inserts the power storage device 208, the temperature of the movement mechanism that moves the holding unit 206 or the connector 238 relatively, the voltage supplied to the movement mechanism, and the like. In other words, the relative movement speed of the holding unit 206 and the power storage device 208 may not be stable depending on the environment around the holding unit 206 and the power storage device 208. Also, from the viewpoint of improving the marketability of the power device 200 and the power storage device 208, it is preferable to move the power storage device 208 and the holding unit 206 at a stable speed. Furthermore, in order to achieve a reduction in size and cost of the power device 200, it is preferable to be able to eliminate the use of components such as dampers.

[0258] Therefore, in the sixteenth modification, the relative movement speed of the holding unit 206 and the power storage device 208 is controlled by controlling the on / off of the two switches 382, ​​470 to control the amount of power stored in the capacitor 380 (amount of regenerated power).

[0259] Specifically, when both switches 382 and 470 are off, even if generator 276 generates power, the generated power (regenerative power) is not stored in capacitor 380. In other words, even if generator 276 generates power, no current flows through capacitor 380. This reduces the rotational resistance (motor resistance) when rotating shaft 280 of generator 276 rotates. In this case, the rotational resistance and the spring resistance of spring member 412 act on holding unit 206 and power storage device 208 as they descend. However, because the rotational resistance is small, holding unit 206 and power storage device 208 move at a relatively high speed, connecting two connectors 216 and 238. In this case, because both switches 382 and 470 are off, capacitor 380 can be protected from overvoltage.

[0260] Furthermore, when switch 382 is on and switch 470 is off, the electric power (regenerative electric power) generated by generator 276 is stored in capacitor 380. In this case, holding unit 206 and power storage device 208 move at a normal speed, and two connectors 216, 238 are connected.

[0261] Furthermore, when switch 382 is off and switch 470 is on, the electrical connection between generator 276 and capacitor 380 is interrupted, and generator 276 is short-circuited. This maximizes the current generated by generator 276, increasing the rotational resistance of rotating shaft 280. As a result, the resistance (rotational resistance, spring resistance) to holding unit 206 and power storage device 208 increases as they move downward. Therefore, the movement speed of holding unit 206 and power storage device 208 decreases, and the two connectors 216, 238 are connected at a low speed.

[0262] Furthermore, when switch 382 is on and switch 470 repeatedly turns on and off in a short period of time, generator 276 stores the generated power in capacitor 380 during the time period when switch 382 is on and switch 470 is off. Furthermore, during the time period when switches 382 and 470 are both on, generator 276 is short-circuited, increasing the rotational resistance of rotating shaft 280. Furthermore, the storage of power in capacitor 380 is temporarily interrupted. In this case, the voltage stored in capacitor 380 can be adjusted and capacitor 380 can be prevented from becoming overvoltage. Furthermore, holding unit 206 and power storage device 208 move at a normal speed, connecting two connectors 216 and 238.

[0263] When generator 276 stops generating power, if switch 382 is on and switch 470 is off, the charge stored in capacitor 380 can be discharged, and therefore the voltage stored in capacitor 380 can be adjusted.

[0264] Furthermore, when the generator 276 stops generating power and the switches 382 and 470 are both off, the discharge of the capacitor 380 is suppressed, so that the voltage stored in the capacitor 380 can be maintained.

[0265] In this way, in the sixteenth variant, by controlling the on / off of the switches 382, ​​470 to change the rotational resistance of the generator 276, it is possible to control the moving speed when the holding unit 206 and the storage device 208 descend.

[0266] In the sixteenth modification, the case where the power storage unit of the power device 200 is the capacitor 380 has been described. Even if the power storage unit of the power device 200 is the sub-battery 294, the above function can be realized by turning the two switches 382, ​​470 on and off as described above.

[0267] 39A to 40B are diagrams showing a seventeenth modified example. In the seventeenth modified example, a generator 276 functions as an electric motor.

[0268] 39A shows a state in which tray 400 is lowered and two connectors 216, 238 are connected, similar to the ninth modified example shown in FIG. 27. In this case, sub-battery 294 or capacitor 380 is constantly charged by the power supply from power storage device 208.

[0269] When the user opens the cover 220, the generator 276 functions as an electric motor by receiving power (power running power) from the sub-battery 294 or the capacitor 380. That is, the generator 276 receives the power supply and drives (power running) to rotate the rotating shaft portion 280 in the direction opposite to that during power generation. As a result, the drum 414 of the spring portion 410 also rotates in the opposite direction, and starts to wind up the spring member 412. As the spring member 412 is wound up in the upward direction, the power storage device 208 and the tray 400 receive an upward force from the spring member 412 and rise together (see FIG. 39B).

[0270] In the seventeenth modification, the connector 238 of the electric power device 200 can be lifted together with the power storage device 208 while being connected to the connector 216 of the power storage device 208. That is, in the seventeenth modification, the connector 238 is not fixed to the support plate 360. The connector 238 is placed on the support plate 360 ​​so as to be separable from the support plate 360.

[0271] As the spring member 412 is wound around the drum 414, the power storage device 208 and the tray 400 rise to the position (second position) shown in FIG. 40A. At this time, the tray 400 is supported from below by a support member 480 such as a claw member or a ratchet mechanism. After the power storage device 208 and the tray 400 rise to the position shown in FIG. 40A, the generator 276 stops driving. The support member 480 is supported by the housing 202 so as to be movable toward and away from the tray 400.

[0272] Next, when the user pulls out the power storage device 208 from the tray 400, the connector 216 and the connector 238 are separated (see FIG. 40B). The connector 238 remains in the position shown in FIG. 40B. This allows the two connectors 216, 238 to be quickly connected when the user inserts the power storage device 208 into the power device 200.

[0273] In this way, in the seventeenth modification, by lifting the tray 400, it is possible to assist in removing the power storage device 208 from the power device 200 without incurring additional costs.

[0274] 41 is a diagram showing an 18th modified example, which is a partial modification of the 17th modified example (see FIGS. 39A to 40B).

[0275] In the eighteenth modification, after the connector 238 remains in the position shown in Fig. 40B, the connector 238 is lowered to the support plate 360 ​​(see Fig. 41). In the eighteenth modification, by lowering the connector 238, it is possible to prevent damage to the connector 238.

[0276] Further modifications of the above-described first to third embodiments, first to fourth examples, and first to eighteenth modifications (hereinafter also referred to as the present embodiments) will be described below.

[0277] In the above description, the battery 12 is inserted into and removed from the power device 10, 60 in a vertical direction (see FIGS. 6A to 10B). Also, the power storage device 208 is inserted into and removed from the power device 200 in a vertical direction (see FIGS. 13 to 14B, 16B to 23B, 26A to 37B, and 39A to 41). In this embodiment, the battery 12 can also be inserted into and removed from the power device 10, 60 in an oblique direction. Also, the power storage device 208 can also be inserted into and removed from the power device 200 in an oblique direction. In this case, the battery 12 and the power storage device 208 are held in an oblique direction inside the power device 10, 60, 200.

[0278] In the above description, the electric power devices 10 and 60 are applied to a vehicle. In this embodiment, like the electric power device 200, the electric power devices 10 and 60 can also be applied to a power feeding device.

[0279] In the third embodiment, the switch 382 is provided (see FIG. 24). The voltage of the capacitor 380 is mainly used to generate an activation signal. That is, the activation command unit 300 functions as an on / off switch for the capacitor 380. Therefore, the switch 382 can be omitted. However, as described above, by providing the switch 382, ​​it becomes possible to effectively suppress spontaneous discharge from the capacitor 380 when the switch 382 is turned off.

[0280] In the above description, the case has been described where switch 382 is turned on and off based on the user's operation of operation input unit 262. Switch 382 can also be turned on and off as described below. That is, switch 382 may be turned on and off according to control from control unit 298 of ECU 292. Alternatively, when the user operates operation input unit 262, control unit 298 may turn switch 382 on and off based on the operation content of operation input unit 262.

[0281] In this embodiment, the capacitor 22, 380 may be built into, for example, the display interface unit of the power device 10, 60, 200. In this case, the display interface unit is provided on the side or top surface of the power device 200, for example.

[0282] In this embodiment, a rectangular fixing frame may be installed above the holder 206 including the tray 400 within the power device 200, and the holder 206 and the fixing frame may be connected by a plurality of springs 410. Each of the plurality of springs 410 has a certain spring output. Therefore, the holder 206 that holds the power storage device 208 can be efficiently lowered. As a result, the two connectors 216, 238 can be connected without being damaged.

[0283] In the present embodiment, when the power device 10, 60, 200 is applied to a vehicle, the user may regeneratively drive (generate electricity) the motor 18 connected to the wheel or the load 288 which is a motor connected to the wheel by turning the wheels of the vehicle. This allows the electricity generated by the motor 18 or the load 288 to be stored in the capacitor 22, 380. In other words, in the present embodiment, electricity can be generated and stored in the capacitor 22, 380 in the same manner as when the vehicle is pushed to start the engine.

[0284] Furthermore, in the present embodiment, when the power device 10, 60, 200 is applied to a vehicle, the user may use leg power to rotate the motor 18 or the load 288 which is a motor to perform regenerative driving (power generation). Even in this case, the power generated by the motor 18 or the load 288 can be stored in the capacitor 22, 380. That is, in the present embodiment, power generation can be performed and stored in the capacitor 22, 380 in the same manner as when starting an engine by cranking using leg power.

[0285] In this embodiment, the generator 276 is an AC generator. The generator 276 may be a DC generator.

[0286] In this embodiment, the roller 96, the push bar 102, and the like, which are input units, come into contact with the battery 12 when the battery 12 is lowered. In this embodiment, as in the third embodiment, the input units may come into contact with the mounting unit 14 when the battery 12 is lowered while attached to the mounting unit 14.

[0287] The invention that can be understood from the above-described embodiments will be described below.

[0288] A first aspect of the present invention is an electric power device (10, 60, 200) including a connection part (44, 238) to which an electric storage device (12, 208) is connected, an electric operation part (34, 258) electrically connected to the connection part, a holding part (14, 206) to which the electric storage device is detachably held, and an electro-mechanical converting part (62, 252), wherein the electric storage device has an electric storage part (41, 214) and an activation processing part (52, 312) that switches the state of the electric storage device between an activated state in which the electric storage part can be electrically connected to the outside of the electric storage device and an inactivated state in which the electric storage part cannot be electrically connected to the outside of the electric storage device, and 56) has an activation command unit (32, 300) that outputs a command to the activation processing unit, and another power storage unit (22, 294, 380) electrically connected to the activation command unit, and the activation processing unit is configured to switch between the activated state and the inactivated state by the command output from the activation command unit, and the electro-mechanical conversion unit has an input unit (74, 94, 102, 270) that is arranged to receive kinetic energy accompanying the movement of the power storage device when the power storage device is attached to or detached from the holding unit, and a conversion unit (80, 272) that converts the kinetic energy input to the input unit into electrical energy, and is electrically connected to the other power storage unit.

[0289] According to the present invention, it is possible to reduce the size of the sub-battery or eliminate it. That is, it is possible to reduce the size of other power storage units mounted in the power device, and the capacity of the other power storage units can be reduced. This makes it possible to avoid an increase in the size of the power device and suppress a rise in the cost of the power device. Therefore, the present invention can reduce the cost and weight of the power device and the size of the power device. Furthermore, maintenance of the power device is also unnecessary.

[0290] In a first aspect of the present invention, the holding unit is arranged to be movable while holding the power storage device, and the input unit may be arranged as the holding unit or as part of the holding unit, or be arranged to be mechanically connected to the holding unit, or may be arranged in a position on the movement trajectory of the holding unit where it can come into contact with the holding unit.

[0291] This allows the input portion to easily receive the kinetic energy of the holding portion when the holding portion that holds the power storage device moves.

[0292] In a first aspect of the present invention, the input unit is provided as the holding unit or as part of the holding unit, and the conversion unit may have a rotating electric machine (80, 276) electrically connected to the other power storage unit, and a power transmission unit (88, 90, 104, 372, 374, 410, 420) mechanically connecting the input unit and the rotating electric machine.

[0293] This allows the kinetic energy of the holding portion, which holds the power storage device, to be easily transmitted from the input portion to the rotating electric machine when the holding portion moves.

[0294] In a first aspect of the present invention, the holding unit may be movable between a first position, which is the position of the holding unit when the storage device is used with the power device, and a second position, which is the position of the holding unit when the storage device is removed from the holding unit.

[0295] This allows the holding portion that holds the power storage device to be easily moved.

[0296] In the first aspect of the present invention, the converting portion may further include a biasing portion (410) that biases the holding portion in a direction from the first position to the second position.

[0297] This makes it possible to move the holding portion that holds the power storage device more easily.

[0298] In the first aspect of the present invention, the rotary electric machine may be provided so as to be capable of generating regenerative power by regenerative driving, and so as to be capable of changing the amount of regenerative power generated.

[0299] This allows the rotational resistance of the rotating electric machine to be changed by changing the amount of regenerative power. As a result, the contact resistance between the power storage device or the holding unit and the input unit can be changed, making it possible to adjust the movement speed of the power storage device and the holding unit when inserting the power storage device into the power device. Therefore, it is possible to suppress failures of the connection unit and other connection units caused by connection between the connection unit of the power device and other connection units of the power storage device. In addition, it is possible to appropriately adjust the voltage of the power storage unit.

[0300] In the first aspect of the present invention, the rotating electric machine may be provided so as to be capable of generating rotational power by power running, and so as to be capable of driving the holding portion with the generated rotational power.

[0301] This allows the rotating electrical machine to function as an electric motor, so that the holder held by the electricity storage device can be moved, and as a result, the electricity storage device can be easily removed from the holder.

[0302] In a first aspect of the present invention, the storage device may further have another connection portion connectable to the connection portion, and the holding portion may be arranged to abut against the storage device before the connection portion and the other connection portion abut against each other.

[0303] This allows the input portion or the holding portion to absorb (buffer) the mechanical energy (kinetic energy) of the power storage device when the power storage device is held by the holding portion, thereby preventing damage to the connection portion and other connection portions.

[0304] In the first aspect of the present invention, the connection portion may be provided so as to be movable relative to the holding portion by a driving portion.

[0305] This allows the connection portion of the power device to be connected to another connection portion of the power storage device after the power storage device is held in the holding portion, thereby further preventing damage to the connection portion and other connection portions.

[0306] In the first aspect of the present invention, the input unit may be arranged at a position where it can come into contact with the power storage device on a movement trajectory of the power storage device when the power storage device is attached to or detached from the holder.

[0307] This allows the input unit to easily receive the kinetic energy of the power storage device when the power storage device moves.

[0308] In a first aspect of the present invention, the storage device may further have another connection part connectable to the connection part, and the input part may be arranged to abut against the storage device before the connection part and the other connection part abut against each other.

[0309] This allows the input portion or the holding portion to absorb (buffer) the mechanical energy (kinetic energy) of the power storage device when the power storage device is held by the holding portion, thereby preventing damage to the connection portion and other connection portions.

[0310] In the first aspect of the present invention, the power device may further include an interrupter (20, 382) arranged on the electrical transmission path between the electromechanical conversion unit and the other power storage unit and switchable between a disconnected state and a connected state.

[0311] This makes it possible to prevent the charge stored in the power storage unit from being spontaneously discharged.

[0312] In a first aspect of the present invention, the power device may be switchable between an activated state and a deactivated state, and the interrupter may be switched from the connected state to the disconnected state when the power device is switched from the activated state to the deactivated state.

[0313] This makes it possible to further prevent the charge stored in the power storage unit from being spontaneously discharged.

[0314] In a first aspect of the present invention, the electrical operating unit may be a power conversion unit (34, 258) that converts the power of the power storage device connected to the connection unit, and the other power storage unit may be a capacitor (22, 380) that is provided in parallel with the power conversion unit.

[0315] This allows the capacitor originally provided in the power device to be used as a start-up power source for the power storage device.

[0316] In the first aspect of the present invention, the power conversion unit may perform power conversion between DC power and AC power.

[0317] This makes it possible to suitably apply the present invention to a power device having an inverter.

[0318] In the first aspect of the present invention, the electromechanical conversion unit may be provided so as to input power to the conversion unit from another input unit (350, 352, 356, 450) to which human power is input.

[0319] This allows the conversion unit to convert the energy of the input power into electrical energy even when the user inputs power to the conversion unit using another input unit.

[0320] In the first aspect of the present invention, the other input unit may be provided detachably with respect to the electromechanical transducer unit.

[0321] This improves the ease of use of the power device.

[0322] In the first aspect of the present invention, the power storage unit may be a battery, and the other power storage unit may be a battery (294) or a capacitor (22, 380).

[0323] This makes it possible to easily store the electric energy converted by the conversion unit.

[0324] A second aspect of the present invention is an electric power device comprising a connection portion to which an electric storage device is connected, an electrical operating portion electrically connected to the connection portion, a holding portion in which the electric storage device is detachably held, and an electro-mechanical conversion portion, wherein the electric storage device has the electric storage portion and an activation processing portion that switches the state of the electric storage device between an activated state in which the electric storage portion can be electrically connected to the outside of the electric storage device, and an inactivated state in which the electric storage portion cannot be electrically connected to the outside of the electric storage device, and the electric power device or a mounting device attached to the electric power device has an activation command portion that outputs a command to the activation processing portion and another electric storage unit electrically connected to the activation command portion, and the activation processing portion is configured to switch between the activated state and the inactivated state by the command output from the activation command portion, and the electro-mechanical conversion portion has an input portion arranged to receive kinetic energy associated with human input, and a conversion portion that converts the kinetic energy input to the input portion into electrical energy, and is electrically connected to the other electric storage unit.

[0325] The present invention also provides the same effects as the first aspect.

[0326] In a second aspect of the present invention, the power device further includes a power transmission mechanism (240) that transmits at least one of the power for moving the connection portion and the power for moving a pressing portion (249) that is pressed against the storage device held in the holding portion, and the input portion may be provided as the power transmission mechanism or as a part of the power transmission mechanism, or may be provided so as to be mechanically connected to the power transmission mechanism, or may be positioned on the movement trajectory of the power transmission mechanism so as to be able to come into contact with the power transmission mechanism.

[0327] This allows the input portion to easily receive the kinetic energy of the holding portion when the holding portion that holds the power storage device moves.

[0328] In the second aspect of the present invention, the input unit may be arranged to receive input of upper limb force or lower limb force.

[0329] As a result, even when a user manually inputs energy into the input unit, the conversion unit can convert the input energy into electrical energy.

[0330] In a second aspect of the present invention, the power device may be a vehicle having wheels, the electrically operated unit may be an electric motor that drives the wheels, the input unit may be the wheels that are driven by receiving the human power input, and the conversion unit may be the electric motor.

[0331] This allows the present invention to be easily applied to vehicles.

[0332] A third aspect of the present invention is a mechanical-electrical conversion device (268) comprising an input section and a conversion section that converts kinetic energy input to the input section into electrical energy, wherein the input section is arranged in a holding device (10, 60, 200) having a holding section in which an item (12, 208) is detachably held so as to receive the kinetic energy accompanying the movement of the item when the item is attached to or detached from the holding section.

[0333] The present invention also provides the same effects as the first aspect.

[0334] In a third aspect of the present invention, the input unit may be arranged at a position on the movement trajectory of the item when the item is attached to or detached from the holding unit where it can come into contact with the item, or may be arranged as the holding unit or as part of the holding unit when the holding unit is arranged to be able to move while holding the item, or may be arranged so as to be mechanically connected to the holding unit, or may be arranged at a position on the movement trajectory of the holding unit where it can come into contact with the holding unit.

[0335] This allows the input section to easily receive the kinetic energy of the holding section when the holding section holding the article moves.

[0336] A fourth aspect of the present invention is a power storage device having a power storage unit, the power storage device having an activation processing unit that switches the state of the power storage unit between an activated state in which the power storage unit can be electrically connected to the outside of the power storage device and an inactivated state in which the power storage unit cannot be electrically connected to the outside of the power storage device, and another connection unit, the other connection unit being electrically connected to a mechanical-electrical conversion unit having an input unit arranged to receive kinetic energy associated with human input and a conversion unit that converts the kinetic energy input to the input unit into electrical energy, or is electrically connected to the activation processing unit, or is electrically connected to an activation command unit that outputs a command to the activation processing unit.

[0337] The present invention also provides the same effects as the first aspect.

[0338] A fifth aspect of the present invention is a power system (210) including the power device of the first or second aspect and the power storage device.

[0339] The present invention also provides the same effects as the first aspect.

[0340] A sixth aspect of the present invention is a control method for a power system including a power storage device and a power device to which the power storage device is connected, wherein the power storage device has a power storage unit and an activation processing unit that switches a state of the power storage device between an activated state in which the power storage unit can be electrically connected to an external device of the power storage device and an inactivated state in which the power storage unit cannot be electrically connected to an external device of the power storage device, the power device has a connection unit to which the power storage device is connected, an electrically operating unit that is electrically connected to the connection unit, a holding unit in which the power storage device is detachably held, and an electro-mechanical conversion unit, the power device or an attachment device attached to the power device has an activation command unit that outputs a command to the activation processing unit and another power storage unit that is electrically connected to the activation command unit, and the electro-mechanical conversion unit changes its state in response to movement of the power storage device when the power storage device is attached to or detached from the holding unit. and a conversion unit that converts the kinetic energy input to the input unit into electrical energy, and is electrically connected to the other power storage unit, and the control method includes a first step (S1, S21) of attaching the power storage device to the holding unit, a second step (S12, S22) of the electro-mechanical conversion unit receiving the kinetic energy accompanying the movement of the power storage device and converting it into electrical energy, a third step (S13, S23) of the other power storage unit storing the electrical energy converted by the electro-mechanical conversion unit, a fourth step (S5, S27) of the activation command unit outputting the command to the activation processing unit using the stored power of the other power storage unit, and a fifth step (S6, S28) of the activation processing unit receiving the command and switching the power storage device to the active state.

[0341] The present invention also provides the same effects as the first aspect.

[0342] A seventh aspect of the present invention is a program for causing a computer (28, 292) to execute the power system control method of the sixth aspect.

[0343] The present invention also provides the same effects as the first aspect.

[0344] An eighth aspect of the present invention is a storage medium (296) that stores the program of the seventh aspect.

[0345] The present invention also provides the same effects as the first aspect.

[0346] The present invention is not limited to the above disclosure, and various configurations can be adopted without departing from the gist of the present invention.

Claims

1. An electric power device (10, 60, 200) including a connection part (44, 238) to which an electric storage device (12, 208) is connected, an electric operating part (34, 258) electrically connected to the connection part, a holding part (14, 206) to which the electric storage device is detachably held, and an electro-mechanical converting part (62, 252), The power storage device is a power storage unit (41, 214); an activation processing unit (52, 312) that switches the state of the power storage device between an active state in which the power storage unit can be electrically connected to the outside of the power storage device and an inactive state in which the power storage unit cannot be electrically connected to the outside of the power storage device; and The power device or a mounting device (256) mounted on the power device comprises: an activation command unit (32, 300) that outputs a command to the activation processing unit; Another storage unit (22, 294, 380) electrically connected to the activation command unit; and the activation processing unit is configured to switch between the active state and the inactive state in response to the command output from the activation command unit, the electromechanical converting unit has an input unit (74, 94, 102, 270) that is arranged to receive kinetic energy accompanying movement of the power storage device when the power storage device is attached to or detached from the holding unit, and a converting unit (80, 272) that converts the kinetic energy input to the input unit into electrical energy, and is electrically connected to the other power storage unit; the holding section is provided to be movable while holding the power storage device, the input unit is provided as the holding unit or as a part of the holding unit, the conversion unit includes a rotating electric machine (80, 276) electrically connected to the other power storage unit, and a power transmission unit (88, 90, 104, 372, 374, 410, 420) mechanically connecting the input unit and the rotating electric machine, The rotating electric machine includes: The motor is provided so that it can generate regenerative power by regenerative driving, and the amount of regenerative power generated can be changed. Alternatively, the power device is configured to be capable of generating rotational power by power driving, and is configured to be capable of driving the holding portion by the generated rotational power.

2. 2. The power device according to claim 1, The power device, wherein the holding section is movable between a first position, which is the position of the holding section when the storage device is used with the power device, and a second position, which is the position of the holding section when the storage device is removed from the holding section.

3. 3. The power device according to claim 2, The power device, wherein the conversion portion further includes a biasing portion (410) that biases the holding portion in a direction from the first position to the second position.

4. The power device according to any one of claims 1 to 3, the power storage device further includes another connection portion connectable to the connection portion, The electric power device, wherein the holding portion is arranged to abut against the power storage device before the connection portion and the other connection portion abut against each other.

5. 5. The power device according to claim 4, The power device, wherein the connection portion is provided so as to be movable relative to the holding portion by a driving portion.

6. The power device according to any one of claims 1 to 3, The input unit is disposed at a position where it can come into contact with the power storage device on a movement trajectory of the power storage device when the power storage device is attached to or detached from the holding unit.

7. 7. The power device according to claim 6, the power storage device further includes another connection portion connectable to the connection portion, The power device, wherein the input portion is provided so as to abut against the power storage device before the connection portion and the other connection portion abut against each other.

8. The power device according to any one of claims 1 to 3, The electric power device further comprises a disconnecting unit (20, 382) that is arranged on an electrical transmission path between the electromechanical conversion unit and the other power storage unit and is switchable between a disconnected state and a connected state.

9. 9. The power device according to claim 8, the power device is switchable between an activated state and an inactivated state; The power device, wherein the interrupter is switched from the connected state to the disconnected state when the power device is switched from the activated state to the deactivated state.

10. An electric power device (10, 60, 200) comprising a connection part (44, 238) to which an electric storage device (12, 208) is connected, an electric operating part (34, 258) electrically connected to the connection part, a holding part (14, 206) to which the electric storage device is detachably held, and a mechanical-electrical converting part (62, 252), The power storage device is a power storage unit (41, 214); an activation processing unit (52, 312) that switches the state of the power storage device between an active state in which the power storage unit can be electrically connected to the outside of the power storage device and an inactive state in which the power storage unit cannot be electrically connected to the outside of the power storage device; and The power device or a mounting device (256) mounted on the power device comprises: an activation command unit (32, 300) that outputs a command to the activation processing unit; Another storage unit (22, 294, 380) electrically connected to the activation command unit; and the activation processing unit is configured to switch between the active state and the inactive state in response to the command output from the activation command unit, the electromechanical converting unit has an input unit (74, 94, 102, 270) that is arranged to receive kinetic energy accompanying movement of the power storage device when the power storage device is attached to or detached from the holding unit, and a converting unit (80, 272) that converts the kinetic energy input to the input unit into electrical energy, and is electrically connected to the other power storage unit; the electrical operating unit is a power conversion unit (34, 258) that converts the power of the power storage device connected to the connection unit, The power device, wherein the other power storage unit is a capacitor (22, 380) provided in parallel with the power conversion unit.

11. 11. The power device according to claim 10, The power conversion unit converts power between DC power and AC power.

12. In the power device according to any one of claims 1 to 3, 10 and 11, The electromechanical conversion unit is provided to input power from another input unit (350, 352, 356, 450) to which human power is input, to the conversion unit.

13. 13. The power device of claim 12, The other input unit is detachably provided with respect to the electromechanical conversion unit.

14. In the power device according to any one of claims 1 to 3, 10 and 11, the power storage unit is a battery, The power device, wherein the other power storage unit is a battery (294) or a capacitor (22, 380).

15. An electric power device including: a connection section to which a power storage device is connected; an electric operation section electrically connected to the connection section; a holding section to detachably hold the power storage device; and an electro-mechanical converting section, The power storage device is A power storage unit; an activation processing unit that switches the state of the power storage device between an active state in which the power storage unit can be electrically connected to an external device of the power storage device and an inactive state in which the power storage unit cannot be electrically connected to an external device of the power storage device; and The electric power device or a mounting device mounted on the electric power device, an activation command unit that outputs a command to the activation processing unit; Another power storage unit electrically connected to the activation command unit; and the activation processing unit is configured to switch between the active state and the inactive state in response to the command output from the activation command unit, the electro-mechanical converting unit has an input unit arranged to receive kinetic energy resulting from a human input, and a converting unit that converts the kinetic energy input to the input unit into electrical energy, and is electrically connected to the other power storage unit; The power device includes a power transmission mechanism (240) that transmits at least one of a power for moving the connection portion and a power for moving a pressing portion (249) that is pressed against the power storage device held by the holding portion, The input unit provided as the power transmission mechanism or as a part of the power transmission mechanism, provided so as to be mechanically connected to the power transmission mechanism; Or, an electric power device disposed on a movement path of the power transmission mechanism at a position where the electric power device can come into contact with the power transmission mechanism;

16. 16. The power device of claim 15, The power device, wherein the input is arranged to receive an input of upper limb force or lower limb force.

17. 16. The power device of claim 15, the power device is a vehicle having wheels; the electric operating unit is an electric motor that drives the wheels, the input unit is the wheel that is driven by receiving the input of the human power, The power device, wherein the conversion unit is the electric motor.

18. A mechanical-electrical conversion device (268) comprising an input unit and a conversion unit that converts kinetic energy input to the input unit into electrical energy, the input section is arranged in a holding device (10, 60, 200) having a holding section in which an article (12, 208) is detachably held so as to receive the kinetic energy accompanying movement of the article when the article is attached to or detached from the holding section; the holding portion is provided so as to be movable while holding the article, the input unit is provided as the holding unit or as a part of the holding unit, The conversion unit a rotating electric machine (80, 276) electrically connected to another power storage unit; a power transmission unit (88, 90, 104, 372, 374, 410, 420) that mechanically connects the input unit and the rotating electric machine; and The rotating electric machine includes: The motor is provided so that it can generate regenerative power by regenerative driving, and the amount of regenerative power generated can be changed. Alternatively, the electromechanical transducer is configured to be capable of generating rotational power by power driving, and is configured to be capable of driving the holding portion by the generated rotational power.

19. A power storage device having a power storage unit, an activation processing unit that switches the state of the power storage device between an active state in which the power storage unit can be electrically connected to an external device of the power storage device and an inactive state in which the power storage unit cannot be electrically connected to an external device of the power storage device; Other connections and and The other connection portion is An electricity storage device electrically connected to an electro-mechanical conversion unit having an input unit arranged to receive kinetic energy resulting from human input, and a conversion unit that converts the kinetic energy input to the input unit into electrical energy.

20. A power system (210) comprising the power device according to any one of claims 1 to 3 and 15 to 17 and the power storage device.

21. A control method for a power system including a power storage device and a power device to which the power storage device is connected, comprising: the power storage device includes a power storage unit and an activation processing unit that switches a state of the power storage device between an active state in which the power storage unit can be electrically connected to an external device of the power storage device and an inactive state in which the power storage unit cannot be electrically connected to an external device of the power storage device, the power device includes a connection portion to which the power storage device is connected, an electrical operation portion electrically connected to the connection portion, a holding portion to detachably hold the power storage device, and an electro-mechanical converting portion; The electric power device or a mounting device mounted on the electric power device includes an activation command unit that outputs a command to the activation processing unit, and another power storage unit that is electrically connected to the activation command unit, the electromechanical converting unit has an input unit arranged to receive kinetic energy accompanying movement of the power storage device when the power storage device is attached to or detached from the holding unit, and a converting unit that converts the kinetic energy input to the input unit into electrical energy, and is electrically connected to the other power storage unit; the holding section is provided to be movable while holding the power storage device, the input unit is provided as the holding unit or as a part of the holding unit, the conversion unit includes a rotating electric machine (80, 276) electrically connected to the other power storage unit, and a power transmission unit (88, 90, 104, 372, 374, 410, 420) mechanically connecting the input unit and the rotating electric machine, The rotating electric machine includes: The motor is provided so that it can generate regenerative power by regenerative driving, and the amount of regenerative power generated can be changed. Alternatively, the holding unit may be provided so as to be capable of generating rotational power by power driving, and so as to be capable of driving the holding unit by the generated rotational power, The control method includes: a first step (S1, S21) in which the power storage device is attached to the holding portion; a second step (S12, S22) in which the electromechanical converting unit receives the kinetic energy accompanying the movement of the power storage device and converts it into the electrical energy; a third step (S13, S23) in which the other power storage unit stores the electric energy converted by the electromechanical conversion unit; a fourth step (S5, S27) in which the activation command unit outputs the command to the activation processing unit using the stored power of the other power storage unit; a fifth step (S6, S28) in which the activation processing unit switches the power storage device to the active state upon receiving the command; A method for controlling a power system, comprising:

22. A program that causes a computer (28, 292) to execute the power system control method according to claim 21.

23. A storage medium (296) storing the program according to claim 22.

Images