Power supply system, electric tool system and power supply device

Abstract

The purpose of the present disclosure is to provide a power supply system capable of improving work efficiency. A power supply system (10) supplies power to a handheld power tool (21). The power supply system (10) includes a first battery (111), a power supply circuit (112), a second battery (211), and a tool holder (12). The power supply circuit (112) is configured to convert AC power from a commercial power supply (300) into DC power and supply the DC power to the first battery (111). The second battery (211) is built in the electric tool (21) or in a battery pack (22) attachable to the electric tool (21). The tool holding section (12) is capable of holding a battery-equipped electric tool (2), and is configured to supply power of the first storage battery (111) to the second storage battery (211) while holding the battery-equipped electric tool (2). The battery-equipped electric tool (2) is an electric tool (21) having a built-in second battery (211), or an electric tool (21) to which a battery pack (22) having a built-in second battery (211) is attached.

Description

Technical Field

[0001] The present disclosure relates to a power supply system, a power tool system, and a power supply device, and more particularly to a power supply system, a power tool system, and a power supply device for supplying power to a hand-held power tool. Background Art

[0002] Patent Document 1 describes a power adapter for an electric tool. The power adapter for an electric tool includes a power relay body having a shape similar to a conventionally used rechargeable battery. The power relay body supplies power from a portable large-capacity storage battery to the electric tool.

[0003] In the power tool power adapter described in Patent Document 1, a large-capacity battery is always connected to the power tool (while the power tool is held by the user and performing work, and also while the large-capacity battery is being charged), so work efficiency may decrease.

[0004] Prior art literature

[0005] Patent Literature

[0006] Patent Document 1: Japanese Patent Application Laid-Open No. 2001-145276 Summary of the invention

[0007] An object of the present disclosure is to provide a power supply system, a power tool system, and a power supply device that enable improvement of working efficiency.

[0008] A power supply system according to one aspect of the present disclosure supplies power to a handheld electric tool. The power supply system includes a first battery, a power supply circuit, a second battery, and a tool holding portion. The power supply circuit is configured to convert AC power from a commercial power supply into DC power and supply the DC power to the first battery. The second battery is built into the electric tool, or is built into a battery pack that can be attached to the electric tool. The tool holding portion can hold an electric tool equipped with a battery, and is configured to supply power from the first battery to the second battery while holding the electric tool equipped with a battery. The electric tool equipped with a battery is an electric tool with the second battery built in, or an electric tool to which the battery pack with the second battery built in is attached.

[0009] According to one aspect of the present disclosure, an electric tool system includes the power supply system and an electric tool equipped with a battery. The electric tool equipped with a battery is an electric tool with the second storage battery built in, or an electric tool to which the battery pack with the second storage battery built in is attached.

[0010] According to one aspect of the present disclosure, a power supply device supplies power to a hand-held electric tool. The power supply device includes a first battery, a power supply circuit, and a tool holding portion. The power supply circuit is configured to convert AC power from a commercial power supply into DC power and supply the DC power to the first battery. The tool holding portion is capable of holding an electric tool equipped with a battery, and is configured to supply power from the first battery to a second battery while holding the electric tool equipped with a battery. The electric tool equipped with a battery is an electric tool with the second battery built in, or an electric tool to which a battery pack with the second battery built in is attached. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a block diagram of a power tool system including a power supply system according to an embodiment of the present disclosure;

[0012] Figure 2 is an overview diagram of the power supply devices included in the power supply system;

[0013] Figure 3 A is a diagram for illustrating a process of supplying power to a first storage battery included in the power supply system, and Figure 3 B is a diagram for illustrating a process of supplying power to a second storage battery included in the power supply system;

[0014] Figure 4 is a flowchart illustrating a first notification process using a tool holding unit included in the power supply system;

[0015] Figure 5 is a flowchart illustrating a second notification process using a battery-equipped electric tool included in the power supply system;

[0016] Figure 6 is a block diagram of a modified example of the power supply system;

[0017] Figure 7 A is an overview diagram of a power supply device included in this modification, and Figure 7 B is a diagram for illustrating a process of supplying power to a second storage battery included in this modification;

[0018] Figure 8 is a flowchart illustrating a notification process using a tool holding unit in this modification;

[0019] Fig. 9 is a flowchart illustrating a second lamp lighting control process included in the notification process; and

[0020] Fig.10 1 is a flowchart illustrating instruction processing using a battery-equipped electric power tool included in this modification. DETAILED DESCRIPTION

[0021] (1) Main part

[0022] First, the main reference Figure 1 and Figure 2 as well as Figure 6 and Figure 7 A is used to explain the main parts of the present disclosure (matters common to the embodiments and modifications).

[0023] (1-1) Power supply system

[0024] According to the embodiments of the present disclosure (see Figures 1 to 5 ) or a variation (see Figures 6 to 10 ) is a power supply system for an electric tool that supplies power to an electric tool 21. The electric tool 21 as mentioned in the present disclosure is a hand-held tool and is operated using direct current power obtained by conversion of alternating current power. Specifically, the electric tool 21 is, for example, a rotary tool such as an electric screwdriver, but may be, for example, a cutting tool or any other type of electric tool.

[0025] like Figure 1 or Figure 6 As shown, the power supply system 10 includes a first storage battery 111 , a power supply circuit 112 , a second storage battery 211 , and a tool holding portion 12 .

[0026] (1-1-1) First Storage Battery

[0027] The first storage battery 111 accumulates DC power (hereinafter simply referred to as “power”) obtained by converting AC power using the power supply circuit 112 .

[0028] (1-1-2) Power supply circuit

[0029] The power supply circuit 112 converts AC power from the commercial power source 300 into DC power, and supplies the DC power to the first storage battery 111 (performs power supply).

[0030] (1-1-3) Second storage battery

[0031] The second battery 211 accumulates power supplied from the first battery 111 via the tool holding portion 12. In the present embodiment, the second battery 211 is built into a battery pack 22 attachable to the power tool 21. Alternatively, the second battery 211 may be built into the power tool 21 as described in, for example, a modified example.

[0032] (1-1-4) Tool holding section

[0033] The tool holding portion 12 is capable of holding the battery-equipped electric power tool 2 , and is a tool holding portion having a power supply function capable of supplying power of the first storage battery 111 to the second storage battery 211 while holding the battery-equipped electric power tool 2 .

[0034] (1-1-5) Power tools equipped with batteries

[0035] In this embodiment, the electric tool 2 equipped with a battery is as follows Figure 1 The electric tool 21 is shown with a battery pack 22 (wherein the second storage battery 211 is built into the battery pack 22) attached. Figure 6 In the illustrated modification, the battery-equipped electric tool 2 may be an electric tool 21 having a second storage battery 211 built therein.

[0036] As described above, in the power supply system 10 of the present disclosure, the power supply circuit 112 pre-charges the first battery 111, and the tool holding portion 12 supplies power from the first battery 111 to the second battery 211 while holding a battery-equipped power tool 2 that includes a second battery 211 or is attached with a battery pack 22 (wherein the battery pack 22 includes the second battery 211).

[0037] In this way, while maintaining the battery-equipped power tool 2, the power of the first battery 111 is supplied to the second battery 211 (the second battery 211 is charged using the power of the first battery 111), so there is no need to replace the battery of the battery-equipped power tool 2 or to attach and remove the battery pack 22 for battery charging, thereby improving working efficiency.

[0038] (1-2) Multiple tool holding parts

[0039] like Figure 1 or Figure 6 As shown, the power supply system 10 of the present disclosure includes a plurality of tool holding portions 12. This enables charging of a plurality of battery-equipped electric tools 2 at the same time, thereby improving work efficiency.

[0040] (1-3) Power storage unit

[0041] like Figure 1 or Figure 6 As shown, the power supply system 10 of the present disclosure includes a power storage unit 11. Figure 2 or Figure 7 As shown in FIG. 1A , the power storage unit 11 includes a first storage battery 111 and a power supply circuit 112 , and includes a first housing 110 .

[0042] (1-4) First Shell and Second Shell

[0043] The first housing 110 accommodates a first storage battery 111 and a power supply circuit 112. Note that in the case of Figure 2 and Figure 7 In A, the power supply circuit 112 is omitted.

[0044] Each tool holding portion 12 includes: Figure 2 or Figure 7 The second housing 120 is shown in A. The second housing 120 accommodates a power supply unit 121 and a processor 122 (both of which will be described later), and is capable of holding an electric tool 2 equipped with a battery. At least one of the first housing 110 (power storage unit 11) and the plurality of second housings 120 (plurality of tool holding units 12) is portable. For example, the power storage unit 11 and the plurality of tool holding units 12 may all be portable (transportable), or only the plurality of tool holding units 12 may be transportable and the power storage unit 11 may be difficult to carry (may be fixed).

[0045] As described above, in the power supply system 10 of the present disclosure, the power storage unit 11 and the tool holding unit 12 are configured as separate components, and at least the power storage unit 11 or the tool holding unit 12 is portable, thereby improving the operating efficiency in various types of environments (for example, various production lines for producing various types of products in assembly line operations).

[0046] (1-5) Power supply terminal, input terminal, output terminal and power receiving terminal

[0047] like Figure 2 or Figure 7 As shown in A, the power supply system 10 includes a power supply device 1 (see Figure 1 : to be described later) also includes a power supply terminal 110a, an input terminal 120a, an output terminal 120b and a power receiving terminal 201.

[0048] Each power supply terminal 110 a is provided for the first case 110 included in the power storage unit 11 , and is electrically connected to the first storage battery 111 accommodated in the first case 110 .

[0049] Each input terminal 120 a is provided for the second housing 120 included in a corresponding one of the tool holding portions 12 , and is electrically connectable to a corresponding one of the power supply terminals 110 a via a connection cable 200 .

[0050] Each output terminal 120 b is provided for the second housing 120 , and is electrically connected to a corresponding one of the input terminals 120 a .

[0051] Each power receiving terminal 201 is provided for a corresponding power tool in the power tool 21 or a corresponding battery pack in the battery pack 22 , and is electrically connected to a second storage battery 211 built into the corresponding power tool 21 or the corresponding battery pack in the battery pack 22 .

[0052] The output terminal 120b and the power receiving terminal 201 may be electrically connected by physical bonding. Physical bonding means that each output terminal 120b is in contact with a corresponding power receiving terminal in the power receiving terminal 201. Physical bonding means, for example, Figure 3 As shown in B, when each output terminal 120b is a convex portion provided for the second housing 120 and each power receiving terminal 201 is a convex portion provided for the battery pack 22, the front ends of the two convex portions are in contact with each other. Alternatively, for example, when each output terminal 120b is a convex portion provided for the second housing 120 and each power receiving terminal 201 is a concave portion formed in the battery pack 22, physical coupling may mean that the convex portion is inserted into the concave portion.

[0053] As described above, the power storage unit 11 is connected to each tool holding unit 12 via the connection cable 200, thereby increasing the degree of freedom of the position of each tool holding unit 12 relative to the power storage unit 11. In addition, the connection between each tool holding unit 12 and the power tool 2 equipped with a battery is a physical connection, and during the time period when the physical connection is released, the power tool 2 equipped with a battery is operated using the power of the second storage battery 211, thereby enabling the power tool 2 equipped with a battery to be moved to an arbitrary position. As a result, the working efficiency can be further improved.

[0054] (1-6) Power Supply Department

[0055] like Figure 1 and Figure 2 or Figure 6 and Figure 7 As shown in A, each tool holding portion 12 includes a power supply portion 121.

[0056] The power supply section 121 supplies power in a state where the output terminal 120 b and the power receiving terminal 201 are physically coupled to each other. As used herein, “supplying power” means supplying power of the first storage battery 111 to the second storage battery 211 .

[0057] (1-7) Operation of a battery-equipped electric tool based on power from a second storage battery

[0058] The battery-equipped power tool 2 held by the operator's hand with the output terminal 120b and the power receiving terminal 201 physically separated from each other operates based on the power of the second battery 211. In the case where the power tool 21 is a rotary tool, the operation is, for example, the rotational drive of the tip tool 23 attached to the tool body 21A.

[0059] As described above, in the case of the power supply system 10 of the present invention, the operator simply places the battery-equipped power tool 2 on the tool holding portion 12 during breaks in the work, which enables the second battery 211 to be charged using power from the first battery 111, so that a series of operations can be performed without the need for battery replacement or attachment and removal of the battery pack 22, thereby improving work efficiency.

[0060] (1-8) Announcement Department

[0061] like Figure 2 or Figure 7 As shown in A, each tool holding portion 12 further includes a notification portion (a first notification portion 12A and a second notification portion 12B in the embodiment, a notification portion 12C in the modified example: hereinafter referred to as "notification portion (12A, 12B, 12C)").

[0062] The notification unit (12A, 12B, 12C) issues a notification regarding at least one of: whether power supply by the power supply unit 121 is possible; and the charging state of the second storage battery 211 based on the power supply (for example, charging in progress, charging completed).

[0063] The notification is, for example, lighting the first lamp L1 (notification indicating that power can be supplied) in response to the state of the first storage battery 111 changing from a state incapable of supplying power (tool disconnected state or unpowered state) to a state in which power can be supplied (tool connected state and powered state). Alternatively, the notification may be, for example, a change in the lighting mode of the second lamp (for example, flashing to indicate that charging is in progress, continuous lighting to indicate that charging is complete) based on the voltage of the second storage battery 211 or a change in the voltage.

[0064] In this way, at least one of the following is presented to the operator: whether power can be supplied from the first battery 111 to the second battery 211; and the charging status of the second battery 211 based on the power supply, which facilitates identification of the appropriate timing for starting and ending charging of the battery-equipped power tool 2, thereby improving work efficiency.

[0065] (1-9) Characteristics of the First Storage Battery

[0066] The first storage battery 111 has a larger capacity than the second storage battery 211 .

[0067] As described above, the first battery 111 has a large capacity, so charging the first battery 111 once allows at least one of simultaneous charging of multiple second batteries 211 from the first battery 111 and repeated charging of one second battery 211 from the first battery 111, thereby further improving operating efficiency.

[0068] (1-10) Characteristics of the Second Storage Battery

[0069] The second storage battery 211 has a higher charging speed than the first storage battery 111. Note that in the present embodiment, the second storage battery 211 is a storage battery different in type from the first storage battery 111, and can be charged faster than the first storage battery 111. Thus, the second storage battery 211 can be charged in a shorter time than the first storage battery 111.

[0070] As described above, the second storage battery 211 is quickly chargeable, so a series of operations can be carried out while the second storage battery 211 is charged during breaks in the operations, thereby further improving the operation efficiency.

[0071] Note that the second storage battery 211 preferably has a longer service life than the first storage battery 111 .

[0072] The long service life of the second storage battery 211 reduces the frequency of replacing the second storage battery 211. As a result, Figure 6 As described in the illustrated modification, it is possible to provide an electric power tool 21 having a second storage battery 211 built therein (thus eliminating the need for the battery pack 22 ).

[0073] Furthermore, second storage battery 211 preferably has a higher energy density than first storage battery 111 .

[0074] The high energy density of the second battery 211 enables reduction in at least one of the volume and weight of the second battery 211 , which reduces at least one of the size and weight of the power tool 2 equipped with the battery, thereby further improving working efficiency.

[0075] (1-10-1) All-solid-state battery

[0076] The second storage battery 211 of the present disclosure is an all-solid-state battery. The second storage battery 211 may be, for example, a battery including a plurality of thin-plate-shaped all-solid-state batteries stacked one on top of another.

[0077] Since the second storage battery 211 is a fast-chargeable all-solid-state battery, the working efficiency can be further improved. In addition, the long service life of the all-solid-state battery makes it possible to provide an electric tool 21 having a built-in second storage battery 211 as an all-solid-state battery. In addition, the high energy density of the all-solid-state battery makes it possible to reduce at least one of the size and weight of the electric tool 2 equipped with the battery, thereby further improving the working efficiency.

[0078] (1-11) Power tool system

[0079] like Figure 1 or Figure 6As shown, an electric tool system 100 according to an embodiment or a modified example of the present disclosure (hereinafter referred to as “the electric tool system 100 of the present disclosure”) includes the power supply system 10 as described above and an electric tool 2 equipped with a battery.

[0080] Each battery-equipped electric tool 2 is an electric tool 21 in which the second storage battery 211 is built, or an electric tool 21 to which a battery pack 22 is attached in which the second storage battery 211 is built.

[0081] With the electric tool system 100 of the present disclosure, the power supply circuit 112 pre-charges the first battery 111, and each tool holding portion 12 supplies power from the first battery 111 to the second battery 211 while holding a corresponding battery-equipped electric tool among the battery-equipped electric tools 2 having the second battery 211 built therein, or a corresponding battery-equipped electric tool among the battery-equipped electric tools 2 to which the battery pack 22 is attached (where the second battery 211 is built therein). Therefore, it is no longer necessary to replace the battery of the corresponding battery-equipped electric tool 2 among the battery-equipped electric tools 2, or to attach and detach the battery pack 22 for battery charging, thereby improving work efficiency.

[0082] (1-12) Differences between the embodiment and the modified example in the battery-equipped electric power tool

[0083] (1-12-1) Battery-equipped electric tool of the embodiment

[0084] Each battery-equipped electric tool 2 of the embodiment is as follows Figure 1 The electric power tool 21 is shown to have a battery pack 22 (with a second storage battery 211 built into the battery pack 22) attached thereto.

[0085] In the embodiment, each tool holding portion 12 supplies power to the second battery 211 while holding a corresponding battery-equipped power tool among the battery-equipped power tools 2 to which the battery pack 22 is attached (where the second battery 211 is built in the battery pack 22). Therefore, it is no longer necessary to attach and detach the battery pack 22 for battery charging, thereby improving work efficiency.

[0086] (1-12-2) Battery-equipped electric tool of modified example

[0087] like Figure 6 As shown, each battery-equipped electric tool 2 according to the modified example is an electric tool 21 having a second storage battery 211 built therein.

[0088] In a modified example, each tool holding portion 12 supplies power to the second battery 211 while holding the corresponding battery-equipped power tool in the battery-equipped power tool 2 that has the second battery 211 built in. Therefore, there is no need to replace the battery of the corresponding battery-equipped power tool in the battery-equipped power tool 2, thereby improving working efficiency.

[0089] (1-13) Power supply device

[0090] A power supply device 1 according to an embodiment or a modified example of the present disclosure (hereinafter referred to as “the power supply device 1 of the present disclosure”) is a power supply device for an electric tool that supplies power to a handheld electric tool 21 .

[0091] like Figure 1 or Figure 6 As shown, the power supply device 1 of the present disclosure includes a first storage battery 111 , a power supply circuit 112 , and a tool holding portion 12 .

[0092] The power supply circuit 112 converts AC power from the commercial power supply 300 into DC power and supplies the DC power to the first battery 111. Each tool holding portion 12 is capable of holding a corresponding battery-equipped power tool among the battery-equipped power tools 2, and supplies power from the first battery 111 to the second battery 211 while holding the corresponding battery-equipped power tool among the battery-equipped power tools 2. Each battery-equipped power tool 2 is a power tool 21 with a built-in second battery 211, or a power tool 21 with a battery pack 22 attached (wherein the second battery 211 is built-in the battery pack 22).

[0093] As described above, in the power supply device 1 of the present disclosure, the power supply circuit 112 charges the first battery 111 in advance, and each tool holding portion 12 supplies power from the first battery 111 to the second battery 211 while holding a corresponding battery-equipped power tool among the battery-equipped power tools 2 having the second battery 211 built therein, or a corresponding battery-equipped power tool among the battery-equipped power tools 2 to which the battery pack 22 is attached (where the second battery 211 is built therein). Therefore, it is no longer necessary to replace the battery of the corresponding battery-equipped power tool among the battery-equipped power tools 2, or to attach and detach the battery pack 22 for battery charging, thereby improving work efficiency.

[0094] (2) Details

[0095] Next, refer to Figures 1 to 5 The electric tool system 100 and other components according to the embodiment of the present disclosure are described. Note that the description of matters that have already been described is omitted or simplified.

[0096] (2-1) Details of the power tool system

[0097] like Figure 1 As shown, the electric tool system 100 of the present embodiment includes a power supply device 1 and one or more (in the present embodiment, multiple) electric tools 2 equipped with a battery. The power supply device 1 includes a power storage unit 11 and one or more (in the present embodiment, multiple) tool holding units 12. The power storage unit 11 includes a first battery 111 and a power supply circuit 112.

[0098] Each of the one or more tool holding portions 12 (hereinafter referred to as "tool holding portion 12") includes a power supply portion 121 and a processor 122. The processor 122 includes a tool detector 122a, a current detector 122b, and a first notification portion 12A.

[0099] Each of the one or more battery-equipped power tools 2 (hereinafter referred to as "battery-equipped power tools 2") includes a power tool 21 and a battery pack 22. The battery pack 22 includes a second storage battery 211 and a processor 212. The processor 212 includes a voltage detector 212a and a second notification section 12B.

[0100] (2-1-1) Details of the Power Storage Unit: First Battery and Power Supply Circuit, and Housing and Power Supply Terminals The power storage unit 11 stores power (DC power) used for operation of the electric tool 21. The power supply circuit 112 included in the power storage unit 11 is connected to the power supply circuit 112 through, for example, Figure 2 The power cable 301 shown is connected to the commercial power supply 300. As already described, the power supply circuit 112 converts the AC power from the commercial power supply 300 into DC power and supplies the DC power to the first storage battery 111. Note that the power storage unit 11 may include, for example, a display lamp (not shown) for issuing a notification regarding the charging state of the first storage battery 111. In this case, the power supply circuit 112 includes, for example, a processing circuit (not shown) that performs lighting control of the display lamp.

[0101] The first storage battery 111 is, for example, a lithium-ion battery. The lithium-ion battery is, for example, preferably an iron phosphate-based lithium-ion battery, but may be a lithium-ion battery other than an iron phosphate-based lithium-ion battery (e.g., a ternary lithium-ion battery). Alternatively, the first storage battery 111 is not limited to a lithium-ion battery, but may be, for example, a nickel-metal hydride battery or a lead storage battery, and is not basically limited to a specific type as long as it has a larger capacitance than the second storage battery. Thus, the first storage battery 111 may be of the same type as the second storage battery 211 (e.g., an all-solid-state battery group including a plurality of all-solid-state batteries connected in parallel to each other).

[0102] Note that when the storage unit 11 is of a fixed type, there are fewer restrictions on weight and / or size compared to a transportable type, so the first storage battery 111 can use a capacitor with a lower energy density than the battery described above (e.g., an electric double layer capacitor or a large capacitance electrolytic capacitor).

[0103] The first storage battery 111 and the power supply circuit 112 are housed in, for example, Figure 3 The first housing 110 is shown in A. The first housing 110 is provided with one or more than one (in this embodiment, multiple) power supply terminals 110a.

[0104] The power supply terminal 110a is a terminal for supplying power (for power supply) of the first battery 111 to the second battery 211 of each battery-equipped electric tool 2 via the power supply unit 121 of each tool holding unit 12. Each power supply terminal (hereinafter referred to as "power supply terminal 110a") in one or more power supply terminals 110a provided for the first housing 110 of the power storage unit 11 is electrically connected to the secondary side of the first battery 111 in the first housing 110.

[0105] (2-1-2) Details of the tool holding unit: power supply unit and processor

[0106] As has been described above, each tool holding portion 12 is capable of holding a corresponding battery-equipped power tool among the battery-equipped power tools 2, and supplying power from the first battery 111 to the second battery 211 while holding the corresponding battery-equipped power tool among the battery-equipped power tools 2.

[0107] Each tool holding portion 12 includes a second housing 120. The second housing 120 has a shape capable of holding a power tool 2 equipped with a battery. The second housing 120 is provided with: an input terminal 120a, which is electrically connected to a power supply terminal 110a of the power storage unit 11 via a connection cable 200; and an output terminal 120b, which is physically coupled to and electrically connected to a power receiving terminal 201 (described later) of the power tool 2 equipped with a battery. The input terminal 120a and the output terminal 120b are electrically connected to each other via a power supply unit 121 accommodated in the second housing 120.

[0108] like Figure 2 As shown, the second housing 120 of the present embodiment includes a tool body holding portion 120A and a battery pack holding portion 120B. The tool body holding portion 120A has an insertion hole 120c on one end side and an input terminal 120a on the other end side. The tool body 21A (see FIG. 21 ) attached to the power tool 21 Figure 3The front end tool 23 of B) is inserted into the insertion hole 120c. The battery pack holding portion 120B is attached to the end of the tool body holding portion 120A on the side where the input terminal 120a is provided. The output terminal 120b is arranged at a position opposite to the input terminal 120a.

[0109] The power supply unit 121 included in each tool holding unit 12 performs power supply as described above. That is, the power supply unit 121 supplies the power accumulated in the first storage battery 111 to the second storage battery 211. The power supply unit 121 includes, for example, a connection line (for example, see Figure 2 ), which electrically connects the input terminal 120a and the output terminal 120b to each other; and a switch (not shown) which opens and closes the connection line.

[0110] The power supply unit 121 is electrically connected to the power supply terminal 110a of the power storage unit 11 via the connection cable 200 at the input terminal 120a, and the output terminal 120b is physically coupled to and electrically connected to the power receiving terminal 201 of the power tool 2 equipped with a battery (see Figure 3 Specifically, the power supply unit 121 closes the connection line via the switch (electrically connects the input terminal 120a and the output terminal 120b to each other), thereby starting power supply.

[0111] Note that during a series of operations, the input terminal 120a of each tool holding portion 12 is always connected to the power supply terminal 110a of the power storage portion 11 via the connection cable 200. On the other hand, the output terminal 120b of each tool holding portion 12 is physically coupled to and electrically connected to the power receiving terminal 201 of the corresponding battery-equipped electric tool in the battery-equipped electric tool 2 during the interval between one operation and the next operation in the series of operations (i.e., during the interval between operations).

[0112] The processor 122 included in each tool holding portion 12 performs various types of processing. The various types of processing are, for example, processing using the tool detector 122a, processing using the current detector 122b, and processing using the first notification portion 12A. In addition, the processor 122 also performs processing such as reference Figure 4 The flowcharts describe various types of judgment and other processing.

[0113] The tool detector 122a included in the processor 122 detects the battery-equipped electric tool 2. That is, the tool detection unit 122a detects the physical connection between the input terminal 120a and the power receiving terminal 201 (i.e., determines whether the input terminal 120a and the power receiving terminal 201 are physically connected to each other) by using a contact sensor (not shown) included in any one of the input terminal 120a of the tool holding unit 12 and the power receiving terminal 201 of the battery-equipped electric tool 2.

[0114] The current detector 122b detects the current from the first battery 111 to the second battery 211. That is, the current detector 122b detects the electrical connection between the input terminal 120a of the tool holder 12 and the power receiving terminal 201 of the battery-equipped electric tool 2 (i.e., determines whether the input terminal 120a and the power receiving terminal 201 are electrically connected to each other).

[0115] The first notification unit 12A issues a notification based on the detection results of the tool detector 122a and the current detector 122b. For example, when the input terminal 120a of the tool holding unit 12 and the power receiving terminal 201 of the power tool 2 equipped with a battery are physically combined and electrically connected to each other, the first notification unit 12A notifies that power can be supplied. The notification using the first notification unit 12A is issued by the operation of the first lamp L1 (for example, lighting and extinguishing).

[0116] In the present embodiment, the first lamp L1 is arranged on the face (the face corresponding to the battery-equipped electric power tool 2 ) of the tool body holding portion 120A to which the battery pack holding portion 120B has been attached.

[0117] (2-1-3) Details of battery-equipped power tools: Power tools and battery packs

[0118] As in e.g. Figure 1 As shown in , each battery-equipped electric tool 2 in the present embodiment is an electric tool 21 to which a battery pack 22 is attached.

[0119] (2-1-3a) Power tools

[0120] The electric tool 21 is, for example, Figure 3 The electric tool 21 includes a tool body 21A and a grip 21B. For example, a front end tool 23 such as a screwdriver is attached to the tool body 21A, and the grip 21B is held by the hand of an operator. One end of the grip 21B is attached to the tool body 21A and the other end thereof is attached with a battery pack 22. The front end tool 23 attached to the tool body 21A is rotationally driven using the power of the second storage battery 211 in the battery pack 22 attached to the grip 21B.

[0121] (2-1-3b) Battery pack: second battery and processor

[0122] The battery pack 22 is a member that incorporates a second storage battery 211 and is removably attachable to the electric power tool 21. The battery pack 22 is provided with a power receiving terminal 201.

[0123] The power receiving terminal 201 is a terminal supplied with power from the first storage battery 111 of the power storage unit 11 via the power supply unit 121 of the tool holder 12, and is electrically connected to the primary side of the second storage battery 211. The power receiving terminal 201 has a shape that can be physically coupled to the output terminal 120b of the tool holder 12.

[0124] In addition, the battery pack 22 is provided with a second lamp L2. The second lamp L2 of the present embodiment is arranged on the rear end side of the battery pack 22 (the side opposite to the side to which the front end tool 23 is attached), but may be arranged at any position on the battery pack 22 as long as the operator can easily visually recognize the second lamp L2. Note that the second lamp L2 is not limited to being provided for the battery pack 22, but may be provided for the electric tool 21 (e.g., the tool body 21A).

[0125] The second storage battery 211 in the present embodiment is an all-solid-state battery. However, the second storage battery 211 does not necessarily have to be an all-solid-state battery, as long as the second storage battery 211 can be charged faster than the first storage battery 111. In addition, the second storage battery 211 preferably has a longer service life than the first storage battery 111. Note that for each battery-equipped power tool 2 of the present embodiment, the entire battery pack 22 is replaceable, so the second storage battery 211 does not necessarily have to have a long service life.

[0126] The processor 212 included in the battery pack 22 (in the modified example, the electric tool 2 equipped with the battery) performs various types of processing. The various types of processing are, for example, processing using the voltage detector 212a and processing using the second notification section 12B. In addition, the processor 212 also performs such as referring to Figure 5 The flowcharts describe various types of judgment and other processing.

[0127] The voltage detector 212a included in the processor 212 detects the voltage of the second storage battery 211. The voltage detector 212a detects the voltage of the second storage battery 211 via a voltage sensor (not shown) arranged on the secondary side of the second storage battery 211, for example.

[0128] The second notification section 12B determines the state of the second storage battery 211 based on the detection result using the voltage detector 212a, and issues a notification corresponding to the determination result. Examples of the determination regarding the state of the second storage battery 211 include a determination regarding whether the second storage battery 211 is being charged, a determination regarding whether charging is complete, and a determination regarding whether to start discharging the second storage battery 211 (i.e., to start operating the electric power tool 21 using the power of the second storage battery 211).

[0129] Specifically, for example, when the detection result by the voltage detector 212a is less than or equal to the threshold value and the voltage is increasing, the second notification section 12B determines that the second storage battery 211 is being charged. In addition, for example, when the detection result exceeds the threshold value, the second notification section 12B determines that charging is completed, and when the detection result falls below the threshold value, the second notification section 12B determines that discharging is started.

[0130] In the present embodiment, a notification corresponding to the judgment result is issued by the second lamp. The notification by the second lamp may be, for example, a notification expressed by different lighting modes of the second lamp. Examples of notifications expressed by different lighting modes include flashing in response to a judgment result indicating that charging is being performed, continuously lighting in response to a judgment result indicating that charging is completed, and extinguishing in response to a judgment result indicating that discharge has started. Alternatively, the notification issued by the second lamp may be expressed, for example, by the difference in the color of light emitted from the second lamp (e.g., yellow light corresponding to being charged, blue light corresponding to charging completion, and no light or white light corresponding to discharge start).

[0131] (2-2) Processor Operation

[0132] Next, refer to Figure 4 and Figure 5 The first notification process by the processor 122 of each tool holding portion 12 and the second notification process by the processor 212 of each battery pack 22 are described with reference to the flowchart of FIG.

[0133] (2-2-1) First Notice Processing

[0134] The processor 122 of each tool holding unit 12 is based on Figure 4 Flowchart to perform processing (first notification processing). Note that Figure 4 The processing starts in response to activation of the electric power tool system 100 (tool holding portion 12 ), and ends in response to stopping the operation of the electric power tool system 100 .

[0135] First, the tool detector 122a included in the processor 122 attempts to perform detection of the electric power tool 2 equipped with a battery (step S11).

[0136] Then, the processor 122 determines whether the power tool 2 equipped with a battery has been detected (i.e., whether the output terminal 120b of the tool holding portion 12 is physically connected to the power receiving terminal 201 of the power tool 2 equipped with a battery) (step S12). If it is determined that the power tool 2 equipped with a battery has not been detected (the output terminal 120b is not physically connected to the power receiving terminal 201), the process proceeds to step S17.

[0137] If it is determined in step S11 that the battery-equipped power tool 2 has been detected (the output terminal 120b has been physically coupled to the power receiving terminal 201 or is physically coupled to the power receiving terminal 201), the power supply unit 121 supplies power from the first battery 111 to the second battery 211 (by closing the connecting line via the switch to electrically connect the input terminal 120a and the output terminal 120b to each other) (step S13).

[0138] Then, the current detector 122b detects the current flowing through the connection line (step S14).

[0139] Then, the processor 122 determines whether the first battery 111 is in a power supply state where current is flowing through the connection line (or power supply from the first battery 111 can be performed) based on the detection result in step S14 (step S15). If it is determined that the first battery 111 is not in a power supply state (power supply cannot be performed), the process proceeds to step S17.

[0140] If it is determined in step S15 that the first storage battery 111 is in the power supply state (power supply is possible), the first notification unit 12A turns on the first lamp L1 (or keeps the first lamp L1 turned on) (step S16). This allows the operator to visually recognize that power supply from the first storage battery 111 is possible. Then, the process returns to step S11.

[0141] If it is determined in step S12 that the battery-equipped power tool 2 is not detected, or if it is determined in step S15 that the first storage battery 111 is not in the power supply state (power supply is not possible), the first notification unit 12A turns off the first lamp L1 (or keeps the first lamp L1 off) (step S17). Thereafter, the process returns to step S11.

[0142] (2-2-2) Second Notice Processing

[0143] The processor 212 of each battery pack 22 is based on Figure 5 Flowchart to perform processing (second notification processing). Note that Figure 5 The processing starts and ends in response to the start and operation stop of the power tool system 100 (the battery-equipped power tool 2), respectively.

[0144] First, the voltage detector 212a included in the processor 212 detects the voltage of the second storage battery 211 (step S21).

[0145] Then, the processor 212 determines whether the second storage battery 211 is being charged based on the detection result in step S21 (step S22). If it is determined that the second storage battery 211 is not being charged, the process proceeds to step S24.

[0146] If it is determined in step S22 that the second storage battery 211 is being charged, the second notification section 12B flashes the second lamp L2 (step S23). This allows the operator to visually recognize that the second storage battery 211 is being charged. Thereafter, the process returns to step S21.

[0147] If it is determined in step S22 that the second battery 211 is not being charged, the processor 212 determines whether the charging of the second battery 211 is completed (or has been completed) based on the detection result in step S21 (step S24). If it is determined that the charging of the second battery 211 is not completed, the process proceeds to step S26.

[0148] If it is determined in step S24 that the charging of the second storage battery 211 is completed, the second notification unit 12B continuously lights the second lamp L2 (step S25). This allows the operator to visually recognize that the charging of the second storage battery 211 is completed. Thereafter, the process returns to step S21.

[0149] If it is determined in step S24 that the charging of the second battery 211 has not been completed, the processor 212 determines whether the discharge of the second battery 211 has started (or whether the second battery 211 is being discharged) (step S26). If it is determined that the discharge of the second battery 211 has not started (the second battery 211 is not being discharged), the process returns to step S21.

[0150] If it is determined in step S26 that the second storage battery 211 has started to be discharged (the second storage battery 211 is being discharged), the second notification unit 12B turns off the second lamp L2 (keeps the second lamp L2 off) (step S27). This allows the operator to visually recognize that the second storage battery 211 is being discharged. After that, the process returns to step S21.

[0151] (2-3) Operation examples

[0152] Next, refer to Figure 3 A and Figure 3 B is used to explain an operation example of the electric tool system 100. Note that the matters to be explained below are merely examples, and various modifications can be made.

[0153] In this example, a worker performs a series of works (for example, screw tightening works) by using an electric tool 2 (for example, an electric screwdriver) equipped with a battery.

[0154] Before starting a series of operations (for example, after a series of operations on the previous day have ended), such as Figure 3 As shown in A of FIG. 8 , the operator connects the power storage unit 11 to the commercial power supply 300 via the power cable 301 to charge the first storage battery 111 .

[0155] To start a series of operations, the operator removes the power storage unit 11 from the commercial power supply 300 and installs the power storage unit 11 at the work site. Figure 3 As shown in B, the operator connects the input terminal 120a of the tool holding part 12 to the power supply terminal 110a of the power storage part 11 via the connection cable 200, and sets the power tool 2 equipped with a battery on the tool holding part 12. Thus, the front end tool 23 attached to the tool body 21A is inserted into the insertion hole 120c of the tool body holding part 120A included in the second shell 120. In addition, the power receiving terminal 201 provided for the battery pack 22 of the power tool 2 equipped with a battery is physically coupled to the output terminal 120b of the tool holding part 12, whereby the power supply part 121 of the tool holding part 12 and the second storage battery 211 of the battery pack 22 are electrically connected to each other. In response to this, the first lamp L1 is lit.

[0156] After that, the power of the first storage battery 111 starts to be supplied to the second storage battery 211, and then the second lamp L1 enters a flashing state. When the charging of the second storage battery 211 is completed, the second lamp L1 enters a continuously lit state. In response to this, the operator removes the power tool 2 equipped with the battery from the tool holding portion 12 and starts to perform work such as screw tightening. As a result, the second storage battery 211 starts to discharge, and then the second lamp L1 enters an extinguished state.

[0157] When one work is finished, the worker sets the battery-equipped electric tool 2 on the tool holding portion 12 , thereby recharging the second storage battery 211 .

[0158] Thereafter, the worker sets the battery-equipped electric tool 2 on the tool holder 12 each time a work is finished (during a break in work). Thus, the second storage battery 211 thus discharged is charged, so that a series of work can be continuously performed without replacing the battery pack 22.

[0159] (3) Modification

[0160] Next, refer to Figures 6 to 10 To illustrate a variation of the above-mentioned power tool system 100 and other components. Note that the following description only describes the differences between the power tool system 100 and other components of this variation and the power tool system 100 and other components of the above-mentioned embodiment, and omits or simplifies the description of matters common to the embodiment and the variation.

[0161] (3-1) Structure of Modification Example

[0162] like Figure 6As shown, the electric tool system 100 of this variant includes a power supply device 1 and one or more (in this embodiment, multiple) electric tools 2 equipped with a battery. The power supply device 1 includes a power storage unit 11 and one or more (in this embodiment, multiple) tool holding units 12. The power storage unit 11 includes a first battery 111 and a power supply circuit 112.

[0163] Each of the one or more tool holding parts 12 (hereinafter referred to as "tool holding part 12") includes a power supply part 121 and a processor 122. The processor 122 includes a tool detector 122a, a current detector 122b, and a notification part 12c.

[0164] Each of the one or more battery-equipped power tools 2 (hereinafter referred to as "battery-equipped power tool 2") includes a second storage battery 211 and a processor 212. The processor 212 includes a voltage detector 212a and a notification section 212b.

[0165] That is to say, Figure 6 The electric tool system 100 of this modified example is shown in FIG. Figure 1 The difference of the electric tool system 100 of the above-described embodiment shown is that the second storage battery 211 and the processor 212 are built into each battery-equipped electric tool 2, so that there is no need to attach the battery pack 22 (see, for example, Figure 7 A).

[0166] In addition, since there is no battery pack 22 attached to each battery-equipped power tool 2 of this variant, the second shell 120 included in each tool holding portion 12 of this variant is different from the second shell 120 included in each tool holding portion 12 of the above-mentioned embodiment in that the second shell 120 of this variant does not include a battery pack holding portion 120B, but only includes a tool body holding portion 120A.

[0167] In addition, the electric tool system 100 of this modification is different from the electric tool system 100 of the above-mentioned embodiment (see Figure 1 ) is different in that each tool holding portion 12 (processor 122) includes a notification portion 12C as a substitute for the first notification portion 12A, and each battery-equipped electric tool 2 includes a notification portion 212b (see Figure 6 ) as a substitute for the second notification portion 12B.

[0168] The notification portion 212 b determines the state of the second storage battery 211 based on the detection result by the voltage detector 212 a , and gives a notification corresponding to the determination result to the tool holding portion 12 (notification portion 12C).

[0169] In this modification, the notification is given, for example, by wired communication via an electrical path (a part of a connecting line) between the power supply unit 121 included in the tool holding unit 12 and the second storage battery 211 included in the battery-equipped power tool 2. Note that in the case where the tool holding unit 12 and the battery-equipped power tool 2 each include a wireless communication module, the notification can be given by wireless communication.

[0170] The notifying section 12C issues a notification corresponding to the detection results by the tool detector 122a and the current detector 122b through the first lamp L1 in a similar manner to the first notifying section 12A, and also issues a notification corresponding to the notification from the notifying section 212b through the second lamp L2.

[0171] The first lamp L1 of this modification (see, for example, Figure 7 A) is based on the first lamp L1 of the above embodiment (for example, see Figure 2 ) A similar method is provided for the tool body holding portion 120A included in the second housing 120 of the tool holding portion 12. On the other hand, the second lamp L2 of this modification (for example, see Figure 2 ) is different from the second lamp L2 of the present embodiment in that the second lamp L2 of the present modification is arranged on the tool body holding portion 120A in parallel with the first lamp L1 (see, for example, Figure 7 A).

[0172] Different from the input terminal 120a and the output terminal 120b and the power supply unit 121 of the above-mentioned embodiment (for example, see Figure 2 ), the input terminal 120a and the output terminal 120b and the power supply unit 121 of this modification (for example, see Figure 7 A) is provided for the tool body holding portion 120A included in the second housing 120 of the tool holding portion 12.

[0173] Different from the power receiving terminal 201 of the above-mentioned embodiment (see Figure 3 B), the power receiving terminal 201 of this modification (for example, see Figure 7 B) is set for the tool body 21A.

[0174] (3-2) Operation of Processor in Modification Example

[0175] (3-2-1) Notice Processing

[0176] The processor 122 included in each tool holding unit 12 of this modification example is based on Figure 8 to execute the processing (notification processing) according to the flowchart. Figure 8 Flowchart and Figure 4, wherein step S13A is added between step S13 and step S14, and step S17 is replaced by step S17a.

[0177] In step S13A, based on the notification from the battery-equipped electric tool 2 (notification unit 212b), the lighting control of the second lamp L2 is performed (second lamp lighting control processing). Fig. 9 The second lamp lighting control process will be described below. In step S17a, in addition to turning off the first lamp L1, the second lamp L2 is also turned off.

[0178] according to Fig. 9 The second lamp lighting control process in step S13A is performed according to the flowchart of FIG.

[0179] First, the processor 122 determines whether a notification regarding a blinking instruction is given from the battery-equipped electric power tool 2 (notification section 212b) (step S131). If it is determined that a notification regarding a blinking instruction is not given, the process proceeds to step S133.

[0180] If it is determined in step S131 that a notification related to a flashing instruction is given, the notification unit 12C flashes the second lamp L2 (step S132). Thereafter, the process returns to the upper flowchart (see Figure 8 ).

[0181] If it is determined in step S131 that no notification regarding the flashing instruction is given, the processor 122 determines whether a notification regarding the continuous lighting instruction is given from the power tool 2 equipped with a battery (notification unit 212b) (step S133). If it is determined that no notification regarding the continuous lighting instruction is given, the process returns to the upper flowchart (see Figure 8 ).

[0182] If it is determined that the notification related to the continuous lighting instruction is given, the notification unit 12C causes the second lamp L2 to be continuously lit (step S134). Then, the process returns to the upper flowchart (see Figure 8 ).

[0183] (3-2-2) Notification Processing

[0184] The processor 212 of each battery-equipped electric tool 2 in this modification example is based on Fig.10 to perform processing (notification processing) according to the flowchart. Fig.10 Flowchart and Figure 5 , wherein step S23 and step S25 are replaced by step S23a and step S25a respectively, and step S26 and step S27 are omitted.

[0185] Note that since step S26 and step S27 are omitted, the process performed when it is determined in step S24 that charging of the second storage battery 211 is not completed is the process of returning to step S131.

[0186] In step S23a, the tool holding unit 12 (notification unit 12C) is notified of the blinking instruction. Thereafter, the process returns to step S131.

[0187] In step S25a, the continuous lighting instruction is notified to the tool holding unit 12 (notification unit 12C). Thereafter, the process returns to step S131.

[0188] (4) Other Modifications

[0189] (4-1) Integration of power storage unit and tool holding unit

[0190] In the above-mentioned embodiment and modification, the power storage unit 11 and the tool holding units 12 included in the power supply device 1 are as follows: Figure 2 and Figure 7 A is configured as a separate component, and the power storage unit 11 is electrically connected to the tool holding unit 12 via the connection cable 200. However, the power storage unit 11 and the tool holding unit 12 may be integrated with each other and may be electrically connected to each other without using the connection cable 200.

[0191] That is, the component group such as the first storage battery 111 included in the power storage unit 11 and the component group such as the power supply unit 121 included in each tool holding unit 12 can be accommodated in a single housing (not shown). Alternatively, the power storage unit 11 and each tool holding unit 12 can be physically combined (integrated) with each other and can be electrically connected to each other. In this case, the single component in which the power storage unit 11 and the tool holding unit 12 are integrated is preferably portable, but can be stationary.

[0192] (4-2) Notice of power failure, etc.

[0193] The notification ( Figure 4 and Figure 8 The first lamp lighting process in step S16 of the present invention is not limited to the notification that power can be supplied from the first storage battery 111 (power supply can be supplied), but may be the notification that power cannot be supplied from the first storage battery 111 (power supply cannot be supplied). The notification given by the notification unit 212b of the modification is not limited to the notification that power supply can be supplied, but may be the notification that power supply cannot be supplied.

[0194] (5) Summary

[0195] A power supply system (10) according to a first aspect of the present disclosure supplies power to a hand-held electric tool (21). The power supply system (10) includes a first storage battery (111), a power supply circuit (112), a second storage battery (211), and a tool holding portion (12). The power supply circuit (112) is configured to convert AC power from a commercial power source (300) into DC power and supply the DC power to the first storage battery (111). The second storage battery (211) is built into the electric tool (21), or is built into a battery pack (22) that can be attached to the electric tool (21). The tool holding portion (12) is capable of holding an electric tool (2) equipped with a battery, and is configured to supply power from the first storage battery (111) to the second storage battery (211) while holding the electric tool (2) equipped with a battery. The battery-equipped electric tool (2) is an electric tool (21) having a second storage battery (211) built therein or an electric tool (21) having a battery pack (22) attached thereto (wherein the second storage battery (211) is built therein).

[0196] With this aspect, the power supply circuit (112) charges the first battery (111) in advance, and the tool holding portion (12) supplies power from the first battery (111) to the second battery (211) while holding a battery-equipped electric tool (2) having a second battery (211) built in, or a battery pack (22) attached (wherein the second battery (211) is built in the battery pack (22). Therefore, it is no longer necessary to replace the battery of the battery-equipped electric tool (2) or to attach and detach the battery pack (22) for battery charging, thereby improving work efficiency.

[0197] A power supply system (10) of a second aspect with reference to the first aspect includes a plurality of tool holding portions (12).

[0198] This aspect enables a plurality of battery-equipped electric tools (2) to be charged simultaneously, thereby improving work efficiency.

[0199] The power supply system (10) of the third aspect with reference to the first aspect or the second aspect further includes a power storage unit (11). The power storage unit (11) includes a first storage battery (111), a power supply circuit (112) and a first housing (110). The first housing (110) accommodates the first storage battery (111) and the power supply circuit (112). The tool holding unit (12) includes a second housing (120). The second housing (120) is capable of holding an electric tool (2) equipped with a battery. At least one of the first housing (110) and the plurality of second housings (120) is portable.

[0200] In this aspect, the power storage unit (11) and the tool holding unit (12) are configured as separate components, and at least the power storage unit (11) or the tool holding unit (12) is portable, thereby improving working efficiency in various types of environments.

[0201] The power supply system (10) of the fourth aspect with reference to the third aspect further includes a power supply terminal (110a), an input terminal (120a), an output terminal (120b) and a power receiving terminal (201). The power supply terminal (110a) is provided for the first housing (110) and is electrically connected to the first storage battery (111). The input terminal (120a) is provided for the second housing (120) and can be electrically connected to the power supply terminal (110a) via a connection cable (200). The output terminal (120b) is provided for the second housing (120) and is electrically connected to the input terminal (120a). The power receiving terminal (201) is provided for the electric tool (21) or the battery pack (22) and is electrically connected to the second storage battery (211). The output terminal (120b) and the power receiving terminal (201) can be electrically connected to each other by physical bonding.

[0202] In this aspect, the power storage unit (11) is connected to the tool holding unit (12) via a connection cable (200), thereby increasing the degree of freedom of the position of the tool holding unit (12) relative to the power storage unit (11). In addition, the tool holding unit (12) is connected to the battery-equipped electric tool (2) by physical connection, and during the period of time when the physical connection is released, the battery-equipped electric tool (2) is operated using the power of the second battery (211), thereby enabling the battery-equipped electric tool (2) to be moved to an arbitrary position. As a result, the working efficiency can be further improved.

[0203] In the power supply system (10) of the fifth aspect with reference to the fourth aspect, the tool holding portion (12) includes a power supply portion (121). The power supply portion (121) is configured to supply power in a state where the output terminal (120b) and the power receiving terminal (201) are physically coupled to each other. The power supply is to supply power from the first storage battery (111) to the second storage battery (211). The power tool (2) equipped with the battery is configured to operate based on the power of the second storage battery (211) in a state where the output terminal (120b) and the power receiving terminal (201) are physically separated from each other.

[0204] By utilizing this aspect, the battery-equipped electric tool (2) is simply placed on the tool holding portion (12) during breaks in work, which allows the second battery (211) to be charged using power from the first battery (111), thereby allowing a series of operations to be performed without the need for battery replacement or attachment and removal of the battery pack (22), thereby improving work efficiency.

[0205] The power supply system (10) of the sixth aspect with reference to the fifth aspect further includes a notification unit (12A, 12B, 12C). The notification unit (12A, 12B, 12C) is configured to issue a notification related to at least one of the following: whether power supply is possible and a charging state of the second storage battery (211) based on the power supply.

[0206] By utilizing this aspect, an operator is presented with at least one of whether power can be supplied from a first battery (111) to a second battery (211) and the charging state of the second battery (211) based on the power supply, which facilitates identification of appropriate timing for starting and ending charging of a battery-equipped electric tool (2), thereby improving work efficiency.

[0207] In the power supply system (10) of the seventh aspect related to any one of the first to sixth aspects, the first storage battery (111) has a larger capacitance than the second storage battery (211).

[0208] By utilizing this aspect, the first storage battery (111) has a large capacitance, so charging the first storage battery (111) once makes it possible to simultaneously charge a plurality of second storage batteries (211) from the first storage battery (111) and repeatedly charge one second storage battery (211) from the first storage battery (111), thereby further improving the operating efficiency.

[0209] In the power supply system (10) of the eighth aspect referring to any one of the first to seventh aspects, the second storage battery (211) has a higher charging speed than the first storage battery (111).

[0210] By utilizing this aspect, the second storage battery (211) can be quickly charged, so a series of operations can be carried out while the second storage battery (211) is charged during the intervals between operations, thereby further improving the operation efficiency.

[0211] In the power supply system (10) of the ninth aspect with reference to the eighth aspect, the second storage battery (211) is an all-solid-state battery.

[0212] By utilizing this aspect, the second storage battery (211) is a fully solid-state battery that can be charged at a high speed, thereby further improving the work efficiency. In addition, the long service life of the fully solid-state battery reduces the replacement frequency of the second storage battery, which makes it possible to provide an electric tool having a built-in second storage battery (without the battery pack 22). In addition, the high energy density of the fully solid-state battery reduces at least one of the volume and weight of the second storage battery, thereby further improving the work efficiency.

[0213] The electric tool system (100) according to the tenth aspect comprises: the power supply system (10) of any one of the first to ninth aspects; and an electric tool (2) equipped with a battery. The electric tool (2) equipped with a battery is an electric tool (21) having a second storage battery (211) built in, or an electric tool (21) having a battery pack (22) attached thereto (wherein the second storage battery (211) is built in the battery pack (22)).

[0214] With this aspect, the power supply circuit (112) charges the first battery (111) in advance, and the tool holding portion (12) supplies power from the first battery (111) to the second battery (211) while holding a battery-equipped electric tool (2) having a second battery (211) built in, or a battery pack (22) attached (wherein the second battery (211) is built in the battery pack (22). Therefore, it is no longer necessary to replace the battery of the battery-equipped electric tool (2) or to attach and detach the battery pack (22) for battery charging, thereby improving work efficiency.

[0215] In the electric tool system (100) of the eleventh aspect referring to the tenth aspect, the battery-equipped electric tool (2) is an electric tool (21) having a second storage battery (211) built therein.

[0216] By utilizing this aspect, the tool holding portion (12) holds the battery-equipped electric tool (2) having the second storage battery (211) built therein, and supplies power to the second storage battery (211). Therefore, it is no longer necessary to replace the battery of the battery-equipped electric tool (2), thereby improving the working efficiency.

[0217] In the electric tool system (100) of the twelfth aspect referring to the tenth aspect, the battery-equipped electric tool (2) is an electric tool (21) to which a battery pack (22) is attached (in which a second storage battery (211) is built into the battery pack (22)).

[0218] In this aspect, the tool holding portion (12) holds a battery-equipped electric tool (2) to which a battery pack (22) is attached (wherein a second storage battery (211) is built in the battery pack (22)) while supplying power to the second storage battery (211). Therefore, it is no longer necessary to attach and detach the battery pack (22) for battery charging, thereby improving work efficiency.

[0219] The power supply device (1) of the thirteenth aspect supplies power to a handheld electric tool (21). The power supply device (1) includes a first battery (111), a power supply circuit (112) and a tool holding portion (12). The power supply circuit (112) is configured to convert AC power from a commercial power source (300) into DC power and supply the DC power to the first battery (111). The tool holding portion (12) is capable of holding an electric tool (2) equipped with a battery, and is configured to supply power from the first battery (111) to a second battery (211) while holding the electric tool (2) equipped with a battery. The electric tool (2) equipped with a battery is an electric tool (21) having a built-in second battery (211) or an electric tool (21) having a battery pack (22) attached thereto (wherein the second battery (211) is built into the battery pack (22)).

[0220] With this aspect, the power supply circuit (112) charges the first battery (111) in advance, and the tool holding portion (12) supplies power from the first battery (111) to the second battery (211) while holding a battery-equipped electric tool (2) having a second battery (211) built in, or a battery pack (22) attached (wherein the second battery (211) is built in the battery pack (22). Therefore, it is no longer necessary to replace the battery of the battery-equipped electric tool (2) or to attach and detach the battery pack (22) for battery charging, thereby improving work efficiency.

[0221] Description of Reference Numerals

[0222] 100 Power Tool System

[0223] 1 Power supply device

[0224] 10 Power supply system

[0225] 11 Power storage unit

[0226] 111 First Battery

[0227] 112 Power supply circuit

[0228] 12 Tool holding part

[0229] 121 Power Supply Department

[0230] 12A First Announcement Department (Announcement Department)

[0231] 12B Second Announcement Department (Announcement Department)

[0232] 12C Announcement Department

[0233] 2Equipped with battery-powered power tools

[0234] 21 Power Tools

[0235] 22 Battery Pack

[0236] 211 Second Battery

[0237] 110 First Shell

[0238] 110a Power supply terminal

[0239] 120 Second shell

[0240] 120a input terminal

[0241] 120b Output terminal

[0242] 201 Power receiving terminal

[0243] 200 Connection cable

[0244] 300 Commercial Power Supply

Claims

1. A power supply system for supplying power to a handheld electric tool, the power supply system include: First battery; a power supply circuit configured to convert AC power from a commercial power source into DC power and supply the DC power to the first storage battery; a second storage battery built into the electric power tool or built into a battery pack that can be attached to the electric power tool; as well as a tool holding portion capable of holding a battery-equipped electric tool and configured to supply the electric power of the first battery to the second battery while holding the battery-equipped electric tool, The battery-equipped electric tool is: an electric tool incorporating the second battery, or An electric tool is attached to which the battery pack having the second storage battery built therein is attached.

2. The power supply system according to claim 1, in, The power supply system includes a plurality of the tool holding portions.

3. The power supply system according to claim 1 or 2, further comprising a power storage unit, wherein the power storage unit includes the first storage battery, the power supply circuit, and a first housing for accommodating the first storage battery and the power supply circuit. in, The tool holding portion includes a second housing capable of holding the battery-equipped electric tool, and At least one of the first housing and the plurality of second housings is portable.

4. The power supply system according to claim 3, further comprising: include: a power supply terminal provided for the first housing and electrically connected to the first storage battery; an input terminal, which is provided for the second housing and can be electrically connected to the power supply terminal via a connection cable; an output terminal provided for the second housing and electrically connected to the input terminal; as well as a power receiving terminal provided for the electric tool or the battery pack and electrically connected to the second storage battery, The output terminal and the power receiving terminal can be electrically connected to each other by physical connection.

5. The power supply system according to claim 4, in, The tool holding portion includes a power supply portion configured to supply power from the first storage battery to the second storage battery in a state where the output terminal and the power receiving terminal are physically coupled to each other, and The battery-equipped electric power tool is configured to operate based on electric power of the second storage battery in a state in which the output terminal and the power receiving terminal are physically separated from each other. 6 . The power supply system according to claim 5 , further comprising a notification unit configured to issue a notification regarding at least one of: whether the power supply is possible; and a charging state of the second storage battery based on the power supply.

7. The power supply system according to any one of claims 1 to 6, in, The first battery has a greater capacity than the second battery.

8. The power supply system according to any one of claims 1 to 7, in, The second battery has a higher charging speed than the first battery.

9. The power supply system according to claim 8, in, The second battery is an all-solid-state battery.

10. A power tool system, include: The power supply system according to any one of claims 1 to 9; as well as The battery-equipped electric tool is an electric tool having the second storage battery built therein, or an electric tool to which the battery pack having the second storage battery built therein is attached.

11. The electric tool system according to claim 10, in, The battery-equipped electric tool is an electric tool in which the second storage battery is built.

12. The power tool system according to claim 10, in, The battery-equipped electric tool is an electric tool to which the battery pack having the second storage battery built therein is attached.

13. A power supply device for supplying power to a handheld electric tool, the power supply device include: First battery; a power supply circuit configured to convert AC power from a commercial power source into DC power and supply the DC power to the first storage battery; as well as a tool holding portion capable of holding an electric power tool equipped with a battery and configured to supply the electric power of the first battery to the second battery while holding the electric power tool equipped with the battery, The battery-equipped electric tool is: an electric tool incorporating the second battery, or An electric tool is attached to which the battery pack having the second storage battery built therein is attached.

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