Power supply system for power tools, power tool system, and power supply device for power tools

Abstract

To provide an electric tool power supply system that can enhance workability.SOLUTION: An electric tool power supply system 10 supplies power to a hand-held electric tool 21. The electric tool power supply system 10 includes a first storage battery 111, a power supply circuit 112, a second storage battery 211, and a tool holding part 12 having a power supply function. The power supply circuit 112 converts AC power from a commercial power source 300 to DC power, and supplies the DC power to the first storage battery 111. The second storage battery 211 is included in the electric tool 21, or is included in a battery pack 22 that is attachable to the electric tool 21. The tool holding part 12 having a power supply function can hold a battery-provided electric tool 2, and supplies power in the first storage battery 111 to the second storage battery 211 while holding the battery-provided electric tool 2. The battery-provided electric tool 2 is the electric tool 21 in which the second storage battery 211 is included, or the electric tool 21 to which the battery pack 22 including the second storage battery 211 is attached.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present disclosure relates to a power supply system for a power tool, a power tool system, and a power supply device for a power tool, and more particularly, to a power supply system for a power tool, a power tool system, and a power supply device for a power tool that supplies power to a portable power tool.

Background Art

[0002] Patent Document 1 describes a power supply adapter device for a power tool that supplies power from a portable large-capacity storage battery to the power tool by means of a power supply relay body having the same shape as a conventionally used rechargeable battery.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the power supply adapter device for a power tool of Patent Document 1, since a large-capacity storage battery is constantly connected to the power tool (both during hand-held operation and during charging), workability may be reduced.

[0005] An object of the present disclosure is to provide a power supply system for a power tool, a power tool system, and a power supply device for a power tool that can improve workability.

Means for Solving the Problems

[0006] A power supply system for a power tool according to an aspect of the present disclosure supplies power to a portable power tool. The power supply system for a power tool includes a first storage battery and Power supply circuit Energy storage unit includingThe power supply circuit comprises a second battery and a tool holder with a power supply function. The power supply circuit converts AC power from a commercial power source into DC power and supplies it to the first battery. The second battery is built into the power tool or built into a battery pack that can be attached to the power tool. The tool holder with a power supply function is capable of holding the battery-equipped power tool and, while holding the battery-equipped power tool, supplies power from the first battery to the second battery. The battery-equipped power tool is the power tool with the second battery built in, or the power tool with the battery pack containing the second battery attached. The power storage unit further includes a first housing that houses the first storage battery and the power supply circuit, and the power supply function tool holder unit is a housing different from the first housing and includes a second housing capable of holding the battery-powered tool.

[0007] An electric tool system according to one aspect of the present disclosure comprises a power supply system for the electric tool and an electric tool with a battery. The electric tool with a battery is the electric tool with the second storage battery built in, or the electric tool to which the battery pack with the second storage battery built in is attached.

[0008] A power supply device for electric tools according to one aspect of this disclosure supplies power to a handheld electric tool. The power supply device for electric tools is a first storage battery and Power supply circuit Energy storage unit including The device comprises a power supply circuit and a tool holder with a power supply function. The power supply circuit converts AC power from a commercial power source into DC power and supplies it to the first battery. The tool holder with a power supply function is capable of holding a battery-powered power tool and, while holding the battery-powered power tool, supplies power from the first battery to the second battery. The battery-powered power tool is the power tool with the second battery built in, or the power tool to which a battery pack with the second battery built in is attached. The power storage unit further includes a first housing that houses the first storage battery and the power supply circuit, and the power supply function tool holder unit is a housing different from the first housing and includes a second housing capable of holding the battery-powered tool. [Effects of the Invention]

[0009] The power supply system for electric tools, the electric tool system, and the power supply device for electric tools disclosed herein have the effect of improving work efficiency. [Brief explanation of the drawing]

[0010] [Figure 1] Figure 1 is a block diagram of a power tool system comprising a power supply system for power tools according to an embodiment of the present disclosure. [Figure 2] Figure 2 is an overview of the power supply device for power tools that constitutes the same power supply system for power tools as described above. [Figure 3] Figure 3A is a diagram illustrating the procedure for supplying power to the first battery, which constitutes the same power supply system for electric tools, and Figure 3B is a diagram illustrating the procedure for supplying power to the second battery, which constitutes the same power supply system for electric tools. [Figure 4] Figure 4 is a flowchart illustrating the first notification process by the tool holder with power supply function that constitutes the same power supply system for electric tools. [Figure 5] Figure 5 is a flowchart illustrating the second notification process performed by a battery-powered power tool, which constitutes the same power supply system for power tools as described above. [Figure 6] Figure 6 is a block diagram showing a modified example of the power supply system for electric tools described above. [Figure 7] Figure 7A is an overview of the power supply device for electric tools that constitutes the modified example above, and Figure 7B is a diagram illustrating the power supply procedure to the second storage battery that constitutes the modified example above. [Figure 8] Figure 8 is a flowchart illustrating the notification process by the power supply-equipped tool holder, which constitutes the modified example described above. [Figure 9] Figure 9 is a flowchart illustrating the second lamp illumination control process, which constitutes the notification process described above. [Figure 10] Figure 10 is a flowchart illustrating the instruction processing using a battery-powered electric tool, which constitutes the modified example described above. [Modes for carrying out the invention]

[0011] (1) Main part First, the essential parts of this disclosure (matters common to embodiments and modifications) will be explained primarily with reference to Figures 1 and 2, and Figures 6 and 7A.

[0012] (1-1) Power supply system for power tools The power supply system 10 for power tools (hereinafter referred to as "the power supply system 10 for power tools of the present disclosure") according to an embodiment (see FIGS. 1 to 5) or a modified example (see FIGS. 6 to 10) of the present disclosure supplies power to the power tool 21. The power tool 21 referred to in the present disclosure is a portable tool that operates with DC power obtained by converting AC power. Specifically, the power tool 21 is, for example, a rotary tool such as an electric driver, but may also be a cutting tool or the like, regardless of its type.

[0013] As shown in FIG. 1 or FIG. 6, the power supply system 10 for power tools includes a first battery 111, a power supply circuit 112, a second battery 211, and a tool holding portion 12 with a power supply function.

[0014] (1-1-1) First battery The first battery 111 stores DC power (hereinafter simply referred to as "power") obtained by the power supply circuit 112 converting AC power.

[0015] (1-1-2) Power supply circuit The power supply circuit 112 converts AC power from the commercial power supply 300 into DC power and supplies (powers) it to the first battery 111.

[0016] (1-1-3) Second battery The second battery 211 stores the power supplied from the first battery 111 via the tool holding portion 12 with a power supply function. In the present embodiment, the second battery 211 is built in the battery pack 22 that can be attached to the power tool 21. However, for example, as described in the modified example, it may be built in the power tool 21.

[0017] (1-1-4) Tool holding portion with a power supply function The tool holding portion 12 with a power supply function can hold the battery-powered power tool 2 and supplies the power of the first battery 111 to the second battery 211 while holding the battery-powered power tool 2.

[0018] (1-1-5) Battery-powered power tool In this embodiment, the battery-powered power tool 2 is a power tool 21 equipped with a battery pack 22 containing a second rechargeable battery 211, as shown in Figure 1. However, it may also be a power tool 21 with a built-in second rechargeable battery 211, as described in the modified example shown in Figure 6.

[0019] Thus, in the power supply system 10 for power tools of this disclosure, the power supply circuit 112 pre-charges the first battery 111, and the power supply function tool holder 12 holds the power tool 2 equipped with a battery, which includes the second battery 211 or has a battery pack 22 including the second battery 211 attached, and supplies power from the first battery 111 to the second battery 211.

[0020] In this way, by supplying power from the first battery 111 to the second battery 211 (charging the second battery 211 with the power from the first battery 111) while holding the battery-powered power tool 2, it becomes unnecessary to attach or detach the battery pack 22 for battery replacement or charging of the battery-powered power tool 2, thereby improving work efficiency.

[0021] (1-2) Multiple tool holders with power supply functions As shown in Figure 1 or Figure 6, the power supply system 10 for electric tools of this disclosure includes a plurality of tool holding units 12 with power supply functions. This allows multiple battery-equipped electric tools 2 to be charged simultaneously, thereby improving work efficiency.

[0022] (1-3) Energy storage unit The power supply system 10 for power tools of this disclosure includes a power storage unit 11, as shown in Figure 1 or Figure 6. The power storage unit 11 includes a first battery 111, a power supply circuit 112, and a first housing 110 as shown in Figure 2 or Figure 7A.

[0023] (1-4) First enclosure and second enclosure The first enclosure 110 houses the first battery 111 and the power supply circuit 112. Note that the power supply circuit 112 is omitted in Figures 2 and 7A, etc.

[0024] The power supply function tool holder 12 includes a second housing 120 as shown in Figure 2 or Figure 7A. The second housing 120 houses the power supply unit 121 and the processing unit 122 (both described later) and is capable of holding the battery-powered power tool 2. At least one of the first housing 110 (power storage unit 11) and the multiple second housings 120 (multiple power supply function tool holders 12) is portable. For example, all of the power storage unit 11 and the multiple power supply function tool holders 12 may be portable, or only the multiple power supply function tool holders 12 may be portable, and the power storage unit 11 may be difficult to carry (fixed).

[0025] Thus, in the power supply system 10 for electric tools of this disclosure, the power storage unit 11 and the tool holding unit 12 with power supply function are separate components, and at least one of them is portable, thereby improving work efficiency in a variety of environments (such as various manufacturing lines that produce various products in an assembly line).

[0026] (1-5) Power supply terminal, input terminal, output terminal, and power receiving terminal The power supply device 1 for power tools (see Figure 1; described later), which constitutes the power supply system 10 for power tools, further comprises a power supply terminal 110a, an input terminal 120a, an output terminal 120b, and a power receiving terminal 201, as shown in Figure 2 or Figure 7A.

[0027] The power supply terminal 110a is provided on the first housing 110 which constitutes the energy storage unit 11, and is electrically connected to the first storage battery 111 housed in the first housing 110.

[0028] The input terminal 120a is provided on the second housing 120 which constitutes the power supply function tool holder 12, and can be electrically connected to the power supply terminal 110a via the connection cable 200.

[0029] The output terminal 120b is provided on the second housing 120 and is electrically connected to the input terminal 120a.

[0030] The power receiving terminal 201 is provided on the power tool 21 or battery pack 22 and is electrically connected to the second storage battery 211 built into the power tool 21 or battery pack 22.

[0031] The output terminal 120b and the power receiving terminal 201 can be electrically connected by a physical coupling.

[0032] In this way, by connecting the power storage unit 11 and the power supply function tool holder 12 via a connecting cable 200, the degree of freedom in the position of the power supply function tool holder 12 relative to the power storage unit 11 is increased. Furthermore, by connecting the power supply function tool holder 12 and the battery-powered electric tool 2 by a physical coupling, the battery-powered electric tool 2 operates on the power of the second storage battery 211 during periods when the physical coupling is released, allowing the battery-powered electric tool 2 to be moved to any position. As a result, work efficiency can be further improved.

[0033] (1-6) Power supply section The power supply function-equipped tool holder 12 includes a power supply unit 121, as shown in Figures 1 and 2, or Figures 6 and 7A.

[0034] The power supply unit 121 provides power with the output terminal 120b and the power receiving terminal 201 physically connected. Power supply in this context refers to the supply of power from the first battery 111 to the second battery 211.

[0035] (1-7) Operation of power tools with batteries based on the power of the second battery The battery-powered power tool 2 is held in the operator's hand with the output terminal 120b and power receiving terminal 201 physically separated, and operates based on the power of the second storage battery 211. For example, if the power tool 21 is a rotary tool, the operation is the rotational drive of the tip tool 23 attached to the tool body 21A.

[0036] Thus, with the power supply system 10 for power tools of this disclosure, when a worker sets a battery-powered power tool 2 into the power supply function tool holder 12 during a break in work, the second storage battery 211 is charged with power from the first storage battery 111, and a series of operations can be performed without replacing the battery or attaching / detaching the battery pack 22, thereby improving work efficiency.

[0037] (1-8) Hochi Department The power supply function-equipped tool holder 12 further includes a notification unit (in this embodiment, a first notification unit 12A and a second notification unit 12B, and in a modified example, a notification unit 12C: hereinafter referred to as "notification unit (12A, 12B, 12C)") as shown in Figure 2 or Figure 7A.

[0038] The notification units (12A, 12B, 12C) provide notification regarding at least one of the following: whether or not power can be supplied by the power supply unit 121, and the charging status of the second battery 211 based on said power supply (e.g., charging, charging complete, etc.).

[0039] The notification is, for example, the illumination of the first lamp L1 (notification indicating power supply is possible) in response to the first battery 111 changing from a state where it cannot supply power (state where the tool is not connected or powered off) to a state where it can supply power (state where the tool is connected and powered off). Alternatively, the notification may be a change in the illumination pattern of the second lamp based on the voltage of the second battery 211 or a change in voltage (for example, flashing to indicate charging, continuous illumination to indicate charging is complete, etc.).

[0040] In this way, by presenting the operator with at least one of the following: whether or not power can be supplied from the first battery 111 to the second battery 211, and the charge status of the second battery 211 based on said power supply, it becomes easier to recognize the appropriate start and end timings for charging the battery-powered power tool 2, thereby improving work efficiency.

[0041] (1-9) Characteristics of the first battery The first battery 111 has a larger capacity than the second battery 211.

[0042] Thus, because the first battery 111 has a large capacity, once the first battery 111 is charged, it becomes possible to simultaneously charge multiple second batteries 211 from the first battery 111, and to repeatedly charge one second battery 211 from the first battery 111, resulting in a further improvement in work efficiency.

[0043] (1-10) Characteristics of the second battery The second battery 211 has a faster charging speed compared to the first battery 111.

[0044] Thus, because the second battery 211 can be charged at high speed, it is possible to charge the second battery 211 in between tasks while proceeding with a series of operations, resulting in a further improvement in work efficiency.

[0045] Furthermore, it is preferable that the second battery 211 has a longer lifespan than the first battery 111.

[0046] Due to the long lifespan of the second battery 211, the frequency of replacement of the second battery 211 is reduced, making it possible to provide a power tool 21 with a built-in second battery 211 (and therefore without a battery pack 22), as explained in the modified example shown in Figure 6.

[0047] Furthermore, it is preferable that the second battery 211 has a higher energy density than the first battery 111.

[0048] The high energy density of the second battery 211 makes it possible to reduce at least one of its volume and weight, thereby enabling at least one of the miniaturization and weight reduction of the battery-powered power tool 2, and ultimately leading to a further improvement in work efficiency.

[0049] (1-10-1) All-solid-state battery The second battery 211 in this disclosure is an all-solid-state battery. The second battery 211 may be, for example, a stack of multiple thin-plate all-solid-state batteries.

[0050] The fact that the second battery 211 is a fast-charging all-solid-state battery further improves work efficiency. Furthermore, the long lifespan of the all-solid-state battery makes it possible to provide a power tool 21 incorporating the second battery 211, which is an all-solid-state battery. In addition, the high energy density of the all-solid-state battery allows for at least one of the miniaturization and weight reduction of the power tool 2 with battery, which in turn further improves work efficiency.

[0051] (1-11) Power Tool Systems An embodiment or modified example of the power tool system 100 of the present disclosure (hereinafter referred to as "the power tool system 100 of the present disclosure") comprises, as shown in Figure 1 or Figure 6, a power supply system 10 for power tools as described above, and a power tool 2 with a battery.

[0052] The battery-powered power tool 2 is either a power tool 21 with a built-in second rechargeable battery 211, or a power tool 21 with a battery pack 22 that has a built-in second rechargeable battery 211 attached.

[0053] According to the power tool system 100 of this disclosure, the power supply circuit 112 pre-charges the first battery 111, and the power supply function tool holder 12 holds the power tool 2 which has a built-in second battery 211 or a battery pack 22 which has a built-in second battery 211 attached, and supplies power from the first battery 111 to the second battery 211. This eliminates the need to attach or detach the battery pack 22 for battery replacement or charging of the power tool 2, thereby improving work efficiency.

[0054] (1-12) Differences in battery-powered power tools in embodiments and modified examples (1-12-1) Battery-powered power tool in an embodiment The battery-powered power tool 2 in this embodiment is a power tool 21 equipped with a battery pack 22 containing a second rechargeable battery 211, as shown in Figure 1.

[0055] In this embodiment, the power supply function-equipped tool holder 12 holds the battery-powered power tool 2, which is fitted with a battery pack 22 containing the second storage battery 211, and supplies power to the second storage battery 211. This eliminates the need to attach and detach the battery pack 22 for charging, thereby improving work efficiency.

[0056] (1-12-2) Battery-powered power tool in a modified example In the modified example, the battery-powered power tool 2 is a power tool 21 with a built-in second rechargeable battery 211, as shown in Figure 6.

[0057] In a modified example, the power supply function-equipped tool holder 12 holds the battery-powered power tool 2, which has a built-in second battery 211, and supplies power to the second battery 211, thereby eliminating the need to replace the battery in the battery-powered power tool 2 and improving work efficiency.

[0058] (1-13) Power supply device for electric tools The power supply device 1 for electric tools according to an embodiment or modification of the present disclosure (hereinafter referred to as "the power supply device 1 for electric tools of the present disclosure") supplies power to a handheld electric tool 21.

[0059] As shown in Figure 1 or Figure 6, the power supply device 1 for electric tools of this disclosure comprises a first storage battery 111, a power supply circuit 112, and a tool holder with a power supply function 12.

[0060] The power supply circuit 112 converts AC power from the commercial power supply 300 into DC power and supplies it to the first storage battery 111. The power supply function tool holder 12 is capable of holding the battery-powered power tool 2 and, while holding the battery-powered power tool 2, supplies power from the first storage battery 111 to the second storage battery 211. The battery-powered power tool 2 is either a power tool 21 with the second storage battery 211 built in, or a power tool 21 with a battery pack 22 containing the second storage battery 211 attached.

[0061] Thus, in the power supply device 1 for power tools of this disclosure, the power supply circuit 112 pre-charges the first storage battery 111, and the power supply function tool holder 12 holds the power tool 2 equipped with a battery, which has a built-in second storage battery 211 or a battery pack 22 with a built-in second storage battery 211 attached, while supplying power from the first storage battery 111 to the second storage battery 211. This eliminates the need to attach or detach the battery pack 22 for battery replacement or charging of the power tool 2, thereby improving work efficiency.

[0062] (2) Details Next, the power tool system 100, etc., according to the embodiment of this disclosure will be described with reference to Figures 1 to 5. Note that explanations of previously mentioned matters will be omitted or simplified.

[0063] (2-1) Details of the power tool system As shown in Figure 1, the power tool system 100 of this embodiment comprises a power supply device 1 for power tools and one or more (in this case, multiple) power tools 2 equipped with batteries. The power supply device 1 for power tools comprises a power storage unit 11 and one or more (in this case, multiple) tool holding units 12 with power supply functions. The power storage unit 11 comprises a first storage battery 111 and a power supply circuit 112.

[0064] Each of the one or more power supply tool holders 12 (hereinafter simply referred to as "power supply tool holder 12") comprises a power supply unit 121 and a processing unit 122. The processing unit 122 comprises a tool detection unit 122a, a current detection unit 122b, and a first notification unit 12A.

[0065] Each of the one or more battery-powered power tools 2 (hereinafter simply referred to as "battery-powered power tool 2") comprises a power tool 21 and a battery pack 22. The battery pack 22 comprises a second rechargeable battery 211 and a processing unit 212. The processing unit 212 comprises a voltage detection unit 212a and a second notification unit 12B.

[0066] (2-1-1) Details of the power storage unit: First battery and power supply circuit, as well as housing and power supply terminals The power storage unit 11 stores power (DC power) necessary for the operation of the power tool 21. The power supply circuit 112 constituting the power storage unit 11 is connected to the commercial power supply 300 via a power cable 301, for example, as shown in Figure 2. As described above, the power supply circuit 112 converts AC power from the commercial power supply 300 into DC power and supplies it to the first battery 111. The power storage unit 11 may also have an indicator lamp (not shown) for notifying the charging status of the first battery 111. In that case, the power supply circuit 112 includes a processing circuit (not shown) that controls the lighting of the indicator lamp.

[0067] The first storage battery 111 is, for example, a lithium-ion battery. A lithium-ion battery, for example, a lithium iron phosphate battery is preferred, but other lithium-ion batteries (for example, ternary lithium-ion batteries) may also be used. Alternatively, the first storage battery 111 is not limited to a lithium-ion battery; for example, a nickel-metal hydride battery or a lead-acid battery may also be used, and basically, as long as it has a larger capacity than the second storage battery, the type is not specified. Therefore, the first storage battery 111 may be of the same type as the second storage battery 211 (for example, a group of solid-state batteries consisting of multiple solid-state batteries connected in parallel).

[0068] Furthermore, if the energy storage unit 11 is fixed, there are fewer constraints on weight and size compared to the portable type, so the first battery 111 may use a capacitor with a lower energy density than the batteries described above (for example, an electric double layer or a large-capacity electrolytic capacitor).

[0069] The first battery 111 and the power supply circuit 112 are housed in a first housing 110, for example, as shown in Figure 3A. The first housing 110 is provided with one or more (in this case, multiple) power supply terminals 110a.

[0070] The power supply terminal 110a is a terminal for supplying power from the first storage battery 111 to the second storage battery 211 of the battery-powered power tool 2 via the power supply unit 121 of the power supply function tool holder 12. Each of the one or more power supply terminals 110a provided on the first housing 110 of the storage unit 11 (hereinafter simply referred to as "power supply terminal 110a") is electrically connected to the secondary side of the first storage battery 111 inside the first housing 110.

[0071] (2-1-2) Details of the tool holder with power supply function: Power supply unit and processing unit As described above, the power supply function tool holder 12 is capable of holding the battery-powered power tool 2, and while holding the battery-powered power tool 2, it supplies power from the first storage battery 111 to the second storage battery 211.

[0072] The power supply tool holder 12 has a second housing 120. The second housing 120 has a shape that can hold a battery-powered power tool 2. The second housing 120 is provided with an input terminal 120a that is electrically connected to the power supply terminal 110a of the power storage unit 11 via a connecting cable 200, and an output terminal 120b that is physically connected to and electrically connected to the power receiving terminal 201 (described later) of the battery-powered power tool 2. The input terminal 120a and the output terminal 120b are electrically connected via a power supply unit 121 housed inside the second housing 120.

[0073] As shown in Figure 2, the second housing 120 in this embodiment consists of a tool body holding portion 120A and a battery pack holding portion 120B. The tool body holding portion 120A has an insertion hole 120c formed at one end into which the tip tool 23 attached to the tool body 21A (see Figure 3B) of the power tool 21 is inserted, and the input terminal 120a is provided at the other end. 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, and the output terminal 120b is provided at a position opposite to the input terminal 120a.

[0074] The power supply unit 121, which constitutes the power supply function tool holder unit 12, performs the power supply described above. That is, the power supply unit 121 supplies power stored in the first battery 111 to the second battery 211. The power supply unit 121 includes, for example, a connecting wire (see, for example, Figure 2) that electrically connects the input terminal 120a and the output terminal 120b, and a switch (not shown) that opens and closes the connecting wire.

[0075] The power supply unit 121 supplies power when its input terminal 120a is electrically connected to the power supply terminal 110a of the power storage unit 11 via a connecting cable 200, and its output terminal 120b is physically connected (see Figure 3B) and electrically connected to the power receiving terminal 201 of the battery-powered power tool 2. Specifically, power supply is started when the power supply unit 121 closes the connecting wire via the switch (electrically connecting the input terminal 120a and the output terminal 120b).

[0076] During the series of operations, the input terminal 120a of the power supply tool holder 12 is constantly connected to the power supply terminal 110a of the power storage unit 11 via a connecting cable 200. On the other hand, the output terminal 120b of the power supply tool holder 12 is physically and electrically connected to the power receiving terminal 201 of the battery-powered electric tool 2 in between operations (i.e., between operations).

[0077] The processing unit 122, which constitutes the power supply function tool holder 12, performs various processes. These processes include, for example, the processing of the tool detection unit 122a, the processing of the current detection unit 122b, and the processing of the first notification unit 12A. The processing unit 122 also performs various judgment processes, as explained in the flowchart of Figure 4.

[0078] The tool detection unit 122a, which constitutes the processing unit 122, detects the battery-powered power tool 2. Specifically, the tool detection unit 122a detects the physical connection between the input terminal 120a of the power supply function tool holder unit 12 and the power receiving terminal 201 of the battery-powered power tool 2 via a contact sensor (not shown) provided on either the input terminal 120a or the power receiving terminal 201 (for example, determining whether or not they are physically connected).

[0079] The current detection unit 122b detects the current flowing from the first battery 111 to the second battery 211. That is, the current detection unit 122b detects the electrical connection between the input terminal 120a of the power supply tool holder 12 and the power receiving terminal 201 of the battery-powered power tool 2 (for example, it determines whether or not they are electrically connected).

[0080] The first notification unit 12A provides notification based on the detection results of the tool detection unit 122a and the current detection unit 122b. For example, the first notification unit 12A provides notification that power can be supplied when the input terminal 120a of the power supply function tool holder unit 12 and the power receiving terminal 201 of the battery-powered power tool 2 are physically coupled and electrically connected. The notification by the first notification unit 12A is provided through the operation of the first lamp L1 (for example, by turning it on and off).

[0081] In this embodiment, the first lamp L1 is provided on the side of the tool body holding portion 120A to which the battery pack holding portion 120B is attached (the side corresponding to the battery-powered power tool 2).

[0082] (2-1-3) Details of power tools with batteries: Power tools and battery packs In this embodiment, the battery-powered power tool 2 is a power tool 21 with a battery pack 22 attached, as shown in Figure 1 and the like.

[0083] (2-1-3a) Power tools The power tool 21 is, for example, a rotary tool as shown in Figure 3B. The power tool 21 consists of a tool body 21A and a gripping part 21B. A tip tool 23, such as a screwdriver, is attached to the tool body 21A, and the gripping part 21B is held by the operator's hand. One end of the gripping part 21B is attached to the tool body 21A, and the other end is attached to a battery pack 22. The tip tool 23 attached to the tool body 21A is rotated by the power of the second storage battery 211 in the battery pack 22 attached to the gripping part 21B.

[0084] (2-1-3b) Battery pack: Second rechargeable battery and processing unit The battery pack 22 is a component that can be attached to and detached from the power tool 21 and contains a second rechargeable battery 211. The battery pack 22 is provided with a power receiving terminal 201.

[0085] The power receiving terminal 201 is a terminal that receives power from the first battery 111 of the power storage unit 11 via the power supply unit 121 of the power supply function tool holder 12, and is electrically connected to the primary side of the second battery 211. The power receiving terminal 201 has a shape that allows it to be physically connected to the output terminal 120b of the power supply function tool holder 12.

[0086] Furthermore, the battery pack 22 is provided with a second lamp L2. In this embodiment, the second lamp L2 is provided on the rear end side of the battery pack 22 (opposite the side to which the tip tool 23 is attached), but it may be provided anywhere on the battery pack 22 as long as it is in a position that is easily visible to the operator. Note that the second lamp L2 is not limited to the battery pack 22, but may also be provided on the power tool 21 (for example, the tool body 21A).

[0087] In this embodiment, the second battery 211 is a solid-state battery. However, the second battery 211 does not have to be a solid-state battery, as long as it is a battery that can be charged faster than the first battery 111. Furthermore, it is preferable that the second battery 211 has a longer lifespan than the first battery 111. However, since the battery-powered power tool 2 in this embodiment is replaceable along with the battery pack 22, it does not necessarily have to have a long lifespan.

[0088] The processing unit 212, which constitutes the battery pack 22 (or, in a modified example, the battery-powered power tool 2), performs various processes. These processes include, for example, the processing of the voltage detection unit 212a and the processing of the second notification unit 12B. The processing unit 212 also performs various judgment processes, as explained in the flowchart of Figure 5.

[0089] The voltage detection unit 212a, which constitutes the processing unit 212, detects the voltage of the second battery 211. The voltage detection unit 212a detects the voltage of the second battery 211, for example, via a voltage sensor (not shown) provided on the secondary side of the second battery 211.

[0090] The second notification unit 12B determines the state of the second storage battery 211 based on the detection result of the voltage detection unit 212a and provides notification according to the determination result. The determination of the state of the second storage battery 211 includes, for example, whether or not it is charging, whether or not charging is complete, and whether or not discharge (i.e., operation of the power tool 21 based on the power of the second storage battery 211) has started.

[0091] More specifically, the second notification unit 12B determines that charging is in progress when, for example, the detection result of the voltage detection unit 212a is below a threshold and is rising. Furthermore, the second notification unit 12B determines that charging is complete when, for example, the detection result exceeds the threshold, and determines that discharging has started when the detection result falls below the threshold.

[0092] In this embodiment, notification based on the judgment result is provided through a second lamp. Notification through the second lamp may, for example, be provided by a difference in the lighting pattern of the second lamp. Notification by a difference in lighting pattern may, for example, be flashing in response to a judgment that charging is in progress, continuous lighting in response to a judgment that charging is complete, and turning off in response to a judgment that discharge has started. Alternatively, notification through the second lamp may, for example, be provided by a difference in the color emitted by the second lamp (yellow light emission corresponding to charging, blue light emission corresponding to charging completion, no light emission or white light emission corresponding to discharge has started, etc.).

[0093] (2-2) Operation of the processing unit Next, the first notification process by the processing unit 122 of the power supply tool holder 12 and the second notification process by the processing unit 212 of the battery pack 22 will be explained using the flowcharts in Figures 4 and 5. Note that explanations of previously mentioned items will be omitted or simplified.

[0094] (2-2-1) First notification processing The processing unit 122 of the power supply-equipped tool holder 12 executes the process (first notification process) according to the flowchart in Figure 4. The process in Figure 4 starts when the power tool system 100 (power supply-equipped tool holder 12) is started and ends when it stops operating.

[0095] First, the tool detection unit 122a, which constitutes the processing unit 122, detects the battery-powered power tool 2 (step S11).

[0096] Next, the processing unit 122 determines whether or not the battery-powered power tool 2 has been detected (i.e., whether or not the output terminal 120b of the power supply function tool holder 12 is physically connected to the power receiving terminal 201 of the battery-powered power tool 2) (step S12). If it is determined that the battery-powered power tool 2 has not been detected (that the output terminal 120b is not physically connected to the power receiving terminal 201), the process proceeds to step S17.

[0097] Step S12 If a battery-powered power tool 2 is detected (meaning that the output terminal 120b is physically connected to or connected to the power receiving terminal 201), the power supply unit 121 supplies power from the first storage battery 111 to the second storage battery 211 (by closing the connection wire via the switch, thereby creating an electrical connection between the input terminal 120a and the output terminal 120b) (step S13).

[0098] Next, the current detection unit 122b detects the current flowing through the connection line (step S14).

[0099] Next, the processing unit 122 determines, based on the detection result in step S14, whether or not current is flowing through the connection line (or whether or not power can be supplied from the first battery 111) (step S15). If it is determined that there is no power supply (power supply is not possible), the process proceeds to step S17.

[0100] If it is determined in step S15 that power is available, the first notification unit 12A lights up (or keeps the first lamp L1 lit) (step S16). This allows the operator to visually confirm that power can be supplied from the first battery 111. The process then returns to step S11.

[0101] If it is determined in step S12 that the battery-powered power tool 2 is not detected, or if it is determined in step S15 that the power supply is not working (power supply is not possible), the first notification unit 12A turns off (or keeps off) the first lamp L1 (step S17). The process then returns to step S11.

[0102] (2-2-2) Second notification processing The processing unit 212 of the battery pack 22 executes the process (second notification process) according to the flowchart in Figure 5. The process in Figure 5 starts when the power tool system 100 (power tool 2 with battery) is started and ends when it stops operating.

[0103] First, the voltage detection unit 212a, which constitutes the processing unit 212, detects the voltage of the second storage battery 211 (step S21).

[0104] Next, the processing unit 212 determines whether the second battery 211 is charging or not based on the detection result of step S21 (step S22). If it is determined that the second battery 211 is not charging, the process proceeds to step S24.

[0105] If it is determined in step S22 that the second battery 211 is charging, the second notification unit 12B flashes the second lamp L2 (step S23). This allows the operator to visually confirm that the second battery 211 is charging. The process then returns to step S21.

[0106] If it is determined in step S22 that the second battery 211 is not being charged, the processing unit 212 determines, based on the detection result in step S21, whether or not the charging of the second battery 211 is complete (or has already been completed) (step S24). If it is determined that the charging of the second battery 211 is not yet complete, the process proceeds to step S26.

[0107] If it is determined in step S24 that charging of the second battery 211 is complete, the second notification unit 12B continuously illuminates the second lamp L2 (step S25). This allows the operator to visually confirm that charging of the second battery 211 is complete. The process then returns to step S21.

[0108] If it is determined in step S24 that the charging of the second battery 211 is not yet complete, the processing unit 212 determines whether or not discharge from the second battery 211 has started (or is in the process of discharging) (step S26). If it is determined that discharge from the second battery 211 has not yet started (is not in the process of discharging), the process returns to step S21.

[0109] If it is determined in step S26 that discharge has started from the second battery 211 (discharging is in progress), the second notification unit 12B turns off the second lamp L2 (maintains the off state) (step S27). This allows the operator to visually confirm that the second battery 211 is discharging. The process then returns to step S21.

[0110] (2-3) Example of operation Next, an example of the operation of the power tool system 100 will be explained using Figures 3A and 3B. However, the following is merely illustrative, and various modifications are possible.

[0111] In this example, the worker uses a battery-powered power tool 2 (for example, an electric screwdriver) to perform a series of tasks (such as tightening screws).

[0112] Before the start of the series of operations (for example, after the completion of the series of operations on the previous day), the worker connects the energy storage unit 11 to the commercial power supply 300 with the power cable 301 and charges the first battery 111, as shown in Figure 3A.

[0113] To begin the series of operations, the worker disconnects the power storage unit 11 from the commercial power supply 300 and installs it at the work site. Then, as shown in Figure 3B, the worker connects the input terminal 120a of the power supply function tool holder 12 to the power supply terminal 110a of the power storage unit 11 with the connecting cable 200, and sets the battery-powered power tool 2 into the power supply function tool holder 12. As a result, the tip tool 23 attached to the tool body 21A is inserted into the insertion hole 120c of the tool body holder 120A that constitutes the second housing 120. In addition, the power receiving terminal 201 provided on the battery pack 22 of the battery-powered power tool 2 is physically connected to the output terminal 120b of the power supply function tool holder 12, thereby electrically connecting the power supply unit 121 of the power supply function tool holder 12 and the second storage battery 211 in the battery pack 22. Accordingly, the first lamp L1 lights up.

[0114] Subsequently, power is supplied from the first battery 111 to the second battery 211, and the second lamp... L2 The light will blink. When the second battery 211 is fully charged, the second lamp will light up. L2 The lamp enters a continuous lighting state. In response, the worker removes the battery-powered power tool 2 from the power supply function tool holder 12 and begins work such as tightening screws. This causes the second storage battery 211 to discharge, and the second lamp lights up. L2 The lights will be turned off.

[0115] Once the first task is completed, the worker places the battery-powered power tool 2 into the power supply function tool holder 12, thereby recharging the second battery 211.

[0116] From this point forward, the worker sets the battery-powered power tool 2 into the power supply tool holder 12 each time a task is completed (in between tasks). As a result, the discharged second storage battery 211 is recharged, allowing the series of tasks to be continued without replacing the battery pack 22.

[0117] (3) Variant Next, modified versions of the power tool system 100 described above will be explained with reference to Figures 6 to 10. In the following, only the differences between the power tool system 100 in these modified versions and the power tool system 100 in the above embodiment will be explained, and the explanation of common matters will be omitted or simplified.

[0118] (3-1) Structure of the variation In this modified example, the power tool system 100, as shown in Figure 6, comprises a power supply device 1 for power tools and one or more (in this case, multiple) battery-powered power tools 2. The power supply device 1 for power tools comprises a power storage unit 11 and one or more (in this case, multiple) power supply function tool holders 12. The power storage unit 11 comprises a first storage battery 111 and a power supply circuit 112.

[0119] Each of the one or more power supply tool holders 12 (hereinafter simply referred to as "power supply tool holder 12") comprises a power supply unit 121 and a processing unit 122. The processing unit 122 comprises a tool detection unit 122a, a current detection unit 122b, and a notification unit 12C.

[0120] Each of the one or more battery-powered power tools 2 (hereinafter simply referred to as "battery-powered power tool 2") comprises a second storage battery 211 and a processing unit 212. The processing unit 212 comprises a voltage detection unit 212a and a notification unit 212b.

[0121] In other words, the modified power tool system 100 shown in Figure 6 differs from the power tool system 100 of the above embodiment shown in Figure 1 in that the battery-powered power tool 2 has a second storage battery 211 and a processing unit 212 built in, and does not require the installation of a battery pack 22 (see Figure 7A, etc.).

[0122] Furthermore, because the battery pack 22 is not attached to the battery-powered power tool 2 in this modified example, the second housing 120 constituting the power supply function tool holder 12 in this modified example does not have a battery pack holder 120B, but only a tool body holder 120A, which is different from the second housing 120 constituting the power supply function tool holder 12 in the above embodiment.

[0123] In addition, this modified power tool system 100 differs from the power tool system 100 of the above embodiment (see Figure 1) in that the power supply function tool holding unit 12 (processing unit 122) is equipped with a notification unit 12C instead of the first notification unit 12A, and the battery-powered power tool 2 is equipped with a notification unit 212b instead of the second notification unit 12B (see Figure 6).

[0124] The notification unit 212b determines the state of the second storage battery 211 based on the detection result of the voltage detection unit 212a, and sends a notification to the power supply function tool holding unit 12 (notification unit 12C) according to the determination result.

[0125] In this modified example, the notification is made, for example, by wired communication via the electrical circuit (part of the above-mentioned connecting line) between the power supply unit 121, which constitutes the power supply function tool holder 12, and the second storage battery 211, which constitutes the battery-powered power tool 2. However, if each of the power supply function tool holder 12 and the battery-powered power tool 2 has a wireless communication module, the notification may be made by wireless communication.

[0126] Similar to the first notification unit 12A, the notification unit 12C provides notification based on the detection results of the tool detection unit 122a and the current detection unit 122b via the first lamp L1, and also provides notification based on notifications from the notification unit 212b via the second lamp L2.

[0127] In this modified example, the first lamp L1 is provided in the tool body holding part 120A, which constitutes the second housing 120 of the power supply function tool holding part 12, similar to the first lamp L1 in the above embodiment (see Figure 2, etc.) (see Figure 7A, etc.). On the other hand, the second lamp L in this modified example 2 isThe second lamp L2 in this embodiment differs from the first lamp L2 in that it is provided alongside the first lamp L1 on the tool body holding section 120A (see Figure 7A, etc.).

[0128] In this modified example, the input terminal 120a, output terminal 120b, and power supply unit 121 differ from those in the above embodiment (see Figure 2, etc.) and are provided in the tool body holding unit 120A, which constitutes the second housing 120 of the power supply function tool holding unit 12 (see Figure 7A, etc.).

[0129] In this modified example, the power receiving terminal 201 differs from the power receiving terminal 201 in the above embodiment (see Figure 3B) in that it is provided on the tool body 21A (see Figure 7B, etc.).

[0130] (3-2) Operation of the processing unit in the modified example (3-2-1) Notification Processing In this modified example, the processing unit 122 of the power supply function tool holder 12 performs processing (notification processing) according to the flowchart in Figure 8. The flowchart in Figure 8 is the same as the flowchart in Figure 4, but with the addition of step S13A between steps S13 and S14, and step S17a instead of step S17.

[0131] In step S13A, the second lamp L2 is controlled to light up based on a notification from the battery-powered power tool 2 (notification unit 212b) (second lamp lighting control process). The second lamp lighting control process will be explained using Figure 9. In step S17a, both the first lamp L1 and the second lamp L2 are turned off.

[0132] The second lamp lighting control process in step S13A described above is performed according to the flowchart in Figure 9.

[0133] First, the processing unit 122 determines whether or not there is a notification of a flashing instruction from the battery-powered power tool 2 (notification unit 212b) (step S131). If it is determined that there is no notification of a flashing instruction, the process proceeds to step S133.

[0134] If it is determined in step S131 that a blinking instruction has been received, the notification unit 12C blinks the second lamp L2 (step S132). After that, the process returns to the higher-level flowchart (see Figure 8).

[0135] If step S131 determines that there is no notification of a flashing instruction, the processing unit 122 determines whether there is a notification of a continuous lighting instruction from the battery-powered power tool 2 (notification unit 212b) (step S133). If it is determined that there is no notification of a continuous lighting instruction, the process returns to the higher-level flowchart (see Figure 8).

[0136] If it is determined that a notification for continuous lighting has been received, the notification unit 12C will continuously light the second lamp L2 (step S134). After that, the process returns to the higher-level flowchart (see Figure 8).

[0137] (3-2-2) Notification Processing In this modified example, the processing unit 212 of the battery-powered power tool 2 performs processing (notification processing) according to the flowchart in Figure 10. The flowchart in Figure 10 is the same as the flowchart in Figure 5, but with steps S23a and S25a replaced by steps S23a and S25a, and steps S26 and S27 omitted.

[0138] Furthermore, if steps S26 and S27 are omitted, the process in step S24 when it is determined that charging of the second battery 211 is not yet complete is as follows: S21 This process returns to the previous state.

[0139] In step S23a, a flashing instruction is sent to the power supply tool holder 12 (notification unit 12C). After that, the process proceeds in step S21 Return to the previous page.

[0140] In step S25a, a continuous lighting instruction is sent to the power supply tool holder 12 (notification unit 12C). After that, the process proceeds as follows: S21 Return to the previous page.

[0141] (4) Other variations (4-1) Integration of the power storage unit and the tool holder with power supply function In the embodiments and modifications described above, the power storage unit 11 and the tool holding unit 12 with power supply function that constitute the power supply device 1 for electric tools are separate entities and electrically connected via a connecting cable 200, as shown in Figures 2 and 7A. However, the power storage unit 11 and the tool holding unit 12 with power supply function may be an integrated unit and directly electrically connected without the need for a connecting cable 200.

[0142] In other words, the group of elements constituting the power storage unit 11, such as the first battery 111, and the group of elements constituting the power supply function tool holder unit 12, such as the power supply unit 121, may be housed in a single enclosure (not shown). Alternatively, the power storage unit 11 and the power supply function tool holder unit 12 may be physically coupled (integrated) and electrically connected. In this case, the integrated unit of the power storage unit 11 and the power supply function tool holder unit 12 is preferably portable, but it may also be a stationary type.

[0143] (4-2) Notification of power supply failure, etc. In the above embodiment and the above modified example, the notification by the first notification unit 12A (the first lamp lighting process in step S16 in each of Figures 4 and 8) is not limited to a notification that power can be supplied from the first storage battery 111 (power supply possible), but may also be a notification that power cannot be supplied from the first storage battery 111 (power supply impossible). In the modified example, the notification by the notification unit 212b is not limited to a notification that power can be supplied, but may also be a notification that power cannot be supplied.

[0144] (5) Summary A power supply system (10) for a power tool according to a first aspect of the present disclosure supplies power to a handheld power tool (21). The power supply system (10) comprises a first battery (111), a power supply circuit (112), a second battery (211), and a tool holder with power supply function (12). The power supply circuit (112) converts AC power from a commercial power source (300) into DC power and supplies it to the first battery (111). The second battery (211) is built into the power tool (21) or built into a battery pack (22) that can be attached to the power tool (21). The tool holder with power supply function (12) is capable of holding a battery-powered power tool (2) and, while holding the battery-powered power tool (2), supplies power from the first battery (111) to the second battery (211). The battery-powered power tool (2) is a power tool (21) with a second rechargeable battery (211) built in, or a power tool (21) with a battery pack (22) having a second rechargeable battery (211) built in.

[0145] According to this embodiment, the power supply circuit (112) pre-charges the first storage battery (111), and the power supply function tool holder (12) holds the battery-powered power tool (2) which has a built-in second storage battery (211) or a battery pack (22) with a built-in second storage battery (211) attached, while supplying power from the first storage battery (111) to the second storage battery (211). This eliminates the need to attach or detach the battery pack (22) for battery replacement or charging of the battery-powered power tool (2), thereby improving work efficiency.

[0146] The power supply system (10) for electric tools according to the second embodiment comprises a plurality of tool holding units (12) with power supply functions in the first embodiment.

[0147] According to this embodiment, multiple battery-powered power tools (2) can be charged simultaneously, thereby improving work efficiency.

[0148] A power supply system (10) for power tools according to a third embodiment includes a power storage unit (11) in the first or second embodiment. 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) houses the first storage battery (111) and the power supply circuit (112). A power supply function tool holder (12) includes a second housing (120). The second housing (120) is capable of holding a power tool (2) with a battery. At least one of the first housing (110) and the plurality of second housings (120) is portable.

[0149] According to this embodiment, the power storage unit (11) and the power supply function tool holder unit (12) are separate components, and at least one of them is portable, thereby improving work efficiency in a variety of environments.

[0150] The power supply system (10) for a power tool according to the fourth embodiment further comprises, in the third embodiment, 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 in the first housing (110) and is electrically connected to the first storage battery (111). The input terminal (120a) is provided in the second housing (120) and can be electrically connected to the power supply terminal (110a) via a connecting cable (200). The output terminal (120b) is provided in the second housing (120) and is electrically connected to the input terminal (120a). The power receiving terminal (201) is provided in the power tool (21) or battery pack (22) and is electrically connected to the second storage battery (211). The output terminal (120b) and the receiving terminal (201) can be electrically connected by a physical coupling.

[0151] In this embodiment, the connection between the power storage unit (11) and the power supply tool holder (12) is made via a connecting cable (200), which increases the degree of freedom in the position of the power supply tool holder (12) relative to the power storage unit (11). Furthermore, the connection between the power supply tool holder (12) and the battery-powered power tool (2) is made by a physical coupling, and during periods when the physical coupling is released, the battery-powered power tool (2) operates on the power of the second storage battery (211), allowing the battery-powered power tool (2) to be moved to any position. As a result, work efficiency can be further improved.

[0152] In the fifth embodiment of the power supply system for electric tools (10), in the fourth embodiment, the tool holder with power supply function (12) includes a power supply unit (121). The power supply unit (121) supplies power with an output terminal (120b) and a power receiving terminal (201) physically connected. Power supply is the supply of power from the first storage battery (111) to the second storage battery (211). The battery-powered electric tool (2) operates based on the power from the second storage battery (211) with the output terminal (120b) and the power receiving terminal (201) physically separated.

[0153] According to this embodiment, by simply setting the battery-powered power tool (2) into the power supply function tool holder (12) during breaks in work, the second storage battery (211) is charged with power from the first storage battery (111), and a series of operations can be performed without replacing the battery or attaching / detaching the battery pack (22), thereby improving work efficiency.

[0154] In the sixth embodiment of the power supply system for electric tools (10), the fifth embodiment further includes notification units (12A, 12B, 12C). The notification units (12A, 12B, 12C) provide notification regarding at least one of the following: whether or not power can be supplied, and the charge status of the second storage battery (211) based on the power supply.

[0155] According to this embodiment, by presenting the operator with at least one of the following: whether or not power can be supplied from the first battery (111) to the second battery (211), and the charge state of the second battery (211) based on said power supply, it becomes easier to recognize the appropriate start and end timings for charging the battery-powered power tool (2), thereby improving work efficiency.

[0156] In the power supply system for electric tools (10) according to the seventh embodiment, in any of the first to sixth embodiments, the first storage battery (111) has a larger capacity than the second storage battery (211).

[0157] According to this embodiment, because the first battery (111) has a large capacity, once the first battery (111) is charged, it becomes possible to simultaneously charge multiple second batteries (211) from the first battery (111), and to repeatedly charge one second battery (211) from the first battery (111), thereby further improving work efficiency.

[0158] In the power supply system for electric tools (10) according to the eighth embodiment, in any of the first to seventh embodiments, the second storage battery (211) has a faster charging speed than the first storage battery (111).

[0159] According to this embodiment, since the second battery (211) can be charged at high speed, the series of operations can be carried out while charging the second battery (211) in between operations, resulting in further improvement of work efficiency.

[0160] In the power supply system for electric tools (10) according to the ninth embodiment, the second storage battery (211) is an all-solid-state battery, as in the eighth embodiment.

[0161] In this embodiment, the fact that the second battery (211) is a fast-charging all-solid-state battery further improves work efficiency. Furthermore, the long lifespan of the all-solid-state battery reduces the frequency of replacement of the second battery, making it possible to provide a power tool with a built-in second battery (omitting the battery pack 22). In addition, the high energy density of the all-solid-state battery reduces at least one of the volume and weight of the second battery, further improving work efficiency.

[0162] The power tool system (100) according to the tenth embodiment comprises a power supply system (10) for power tools according to any of the first to ninth embodiments and a power tool (2) with a battery. The power tool (2) with a battery is a power tool (21) with a second storage battery (211) built in, or a power tool (21) with a battery pack (22) with a second storage battery (211) built in.

[0163] According to this embodiment, the power supply circuit (112) pre-charges the first storage battery (111), and the power supply function tool holder (12) holds the battery-powered power tool (2) which has a built-in second storage battery (211) or a battery pack (22) with a built-in second storage battery (211) attached, while supplying power from the first storage battery (111) to the second storage battery (211). This eliminates the need to attach or detach the battery pack (22) for battery replacement or charging of the battery-powered power tool (2), thereby improving work efficiency.

[0164] In the power tool system (100) according to the 11th embodiment, the power tool (2) with battery is a power tool (21) with a second storage battery (211) built in.

[0165] According to this embodiment, the power supply function-equipped tool holder (12) holds the battery-powered power tool (2) which has a second storage battery (211) built into it, and supplies power to the second storage battery (211), thereby eliminating the need to replace the battery in the battery-powered power tool 2 and improving work efficiency.

[0166] In the power tool system (100) according to the twelfth embodiment, in the tenth embodiment, the battery-powered power tool (2) is a power tool (21) to which a battery pack (22) having a second storage battery (211) built in is attached.

[0167] According to this embodiment, the power supply function-equipped tool holder (12) holds the battery-powered power tool (2) to which the battery pack (22) containing the second storage battery (211) is attached, and supplies power to the second storage battery (211), thereby eliminating the need to attach and detach the battery pack (22) for charging and improving work efficiency.

[0168] The power supply device (1) for electric tools according to the 13th embodiment supplies power to a handheld electric tool (21). The power supply device (1) comprises a first storage battery (111), a power supply circuit (112), and a tool holder with a power supply function (12). The power supply circuit (112) converts AC power from a commercial power source (300) into DC power and supplies it to the first storage battery (111). The tool holder with a power supply function (12) is capable of holding a battery-powered electric tool (2), and while holding the battery-powered electric tool (2), it supplies power from the first storage battery (111) to the second storage battery (211). The battery-powered electric tool (2) is an electric tool (21) with a second storage battery (211) built in, or an electric tool (21) with a battery pack (22) with a second storage battery (211) built in.

[0169] According to this embodiment, the power supply circuit (112) pre-charges the first storage battery (111), and the power supply function tool holder (12) holds the battery-powered power tool (2) which has a built-in second storage battery (211) or a battery pack (22) with a built-in second storage battery (211) attached, while supplying power from the first storage battery (111) to the second storage battery (211). This eliminates the need to attach or detach the battery pack (22) for battery replacement or charging of the battery-powered power tool (2), thereby improving work efficiency. [Explanation of symbols]

[0170] 100 Power Tool Systems 1. Power supply device for electric tools 10 Power supply systems for power tools 11. Energy Storage Unit 111 First Battery 112 Power supply circuit 12 Tool holder with power supply function 121 Power supply section 12A First News Department (News Department) 12B Second News Department (News Department) 12C News Department 2. Power tools with batteries 21 Power tools 22 battery packs 211 Second Battery 110 First cabinet 110a power supply terminal 120 Second cabinet 120a Input Terminal 120b Output terminal 201 Power receiving terminal 200 connection cables 300 Commercial power supply

Claims

1. A power supply system for handheld power tools, A power storage unit including a first storage battery and a power supply circuit that converts AC power from a commercial power source into DC power and supplies it to the first storage battery, A second rechargeable battery built into the aforementioned power tool or built into a battery pack that can be attached to the aforementioned power tool, The power tool is equipped with a battery, which is the power tool in which the second battery is built in, or the power tool to which the battery pack in which the second battery is built in is attached, and the power tool holder is equipped with a power supply function that supplies power from the first battery to the second battery while holding the power tool with the battery, The energy storage unit further includes a first housing that houses the first battery and the power supply circuit. The power supply function-equipped tool holder is a different housing from the first housing and includes a second housing capable of holding the battery-powered tool. Power supply system for electric tools.

2. comprising a plurality of the power supply function tool holding units including the second housing, The power supply system for electric tools according to claim 1.

3. At least one of the first housing and the plurality of second housings is portable, The power supply system for electric tools according to claim 2.

4. A power supply terminal is provided in the first housing and is electrically connected to the first storage battery, An input terminal provided in the second housing, which can be electrically connected to the power supply terminal via a connecting cable, The second housing is provided with an output terminal electrically connected to the input terminal, The power tool or the battery pack further comprises a power receiving terminal provided therein and electrically connected to the second storage battery, The output terminal and the power receiving terminal can be electrically connected by physical coupling. A power supply system for electric tools according to any one of claims 1 to 3.

5. The tool holder with power supply function includes a power supply unit that supplies power from the first battery to the second battery, with the output terminal and the power receiving terminal physically connected. The aforementioned battery-powered power tool operates based on the power of the second storage battery, with the output terminal and the receiving terminal physically separated. The power supply system for electric tools according to claim 4.

6. The system further includes a notification unit that provides notification regarding at least one of the following: whether or not power can be supplied, and the charging status of the second storage battery based on the power supply. The power supply system for electric tools according to claim 5.

7. The first battery has a larger capacity than the second battery. The power supply system for electric tools according to claim 1.

8. The second battery has a faster charging speed compared to the first battery. The power supply system for electric tools according to claim 1.

9. The second battery mentioned above is an all-solid-state battery. The power supply system for electric tools according to claim 8.

10. The power supply system for electric tools according to claim 1, A power tool with a battery, which is a power tool having the second rechargeable battery built in, or a power tool to which the battery pack having the second rechargeable battery built in is attached, Power tool system.

11. The aforementioned power tool with battery is the power tool in which the second rechargeable battery is built in. The power tool system according to claim 10.

12. The aforementioned power tool with a battery is the power tool to which the battery pack containing the second rechargeable battery is attached. The power tool system according to claim 10.

13. A power supply device for electric tools that supplies power to handheld electric tools, A power storage unit including a first storage battery and a power supply circuit that converts AC power from a commercial power source into DC power and supplies it to the first storage battery, The power tool is equipped with a battery and can hold the power tool having a second battery built in, or the power tool being equipped with a battery pack having the second battery built in, and includes a tool holder with a power supply function that supplies power from the first battery to the second battery while holding the power tool with the battery, The energy storage unit further includes a first housing that houses the first battery and the power supply circuit. The power supply function-equipped tool holder is a different housing from the first housing and includes a second housing capable of holding the battery-powered tool. Power supply device for electric tools.

Images