WO2013027772A1

WO2013027772A1 - Power source device

Info

Publication number: WO2013027772A1
Application number: PCT/JP2012/071212
Authority: WO
Inventors: 伸康古居; 均鈴木; 匡章福本; 卓也梅村; 和征榊原
Original assignee: 株式会社マキタ
Priority date: 2011-08-25
Filing date: 2012-08-22
Publication date: 2013-02-28

Abstract

Provided is a transportable power source device (10) in which a plurality of battery packs (80) can be mounted, direct current from the mounted battery packs is converted to alternating current, and power afforded by this alternating current is supplied to the outside. The mountable battery packs are chargeable battery packs which are detachably attached to an attachment part of an electric tool and used as a power source for the electric tool, the battery packs are provided with an attachment part (30) which has the same mechanical shape as the attachment part of the electric tool, and the battery packs are mounted by being detachably attached to the attachment part.

Description

Power supply

The present invention relates to a power supply device for supplying power to the outside.

A rechargeable battery pack can be mounted, and a power supply device that can supply the power of the mounted battery pack to the outside is disclosed in, for example, Japanese Patent Application Laid-Open No. 2010-225283. From a functional point of view, such a power supply device can be positioned as a battery pack in which an energy source such as gasoline in the generator is replaced.

Work sites such as construction sites where power tools are used often have a difficult or inconvenient environment where commercial power is used, so it is necessary to use a rechargeable battery pack for power tools in such places. There is a desire to supply power to equipment (including the power tool itself).

As one aspect of the present invention, the power supply device can be mounted with a plurality of battery packs, converts a direct current from the mounted battery pack into an alternating current, and supplies power by the alternating current to the outside. A power supply device that can be transported, wherein the mountable battery pack is a rechargeable battery pack that is detachably mounted on a mounting portion of the power tool and used as a power source of the power tool, and the power tool has a mounting A mounting portion having the same mechanical form as the mounting portion is provided, and the battery pack is detachably mounted on and mounted on the mounting portion.

According to this, since the power supply device is provided with a mounting portion having the same form as that of the electric power tool, a rechargeable battery pack for the electric power tool can be detachably mounted. As a result, if a spare battery pack for a power tool is attached to the power supply device at a work site such as a construction site where the power tool is used, power can be supplied to an external electrical device.

It is a perspective view which shows the lower side of the battery pack common to each embodiment. It is a perspective view which shows the mounting part of the battery pack provided in the electric tool common to each embodiment. It is a perspective view which shows the power supply device which concerns on 1st Embodiment in the state which opened the lid | cover. It is the perspective view which expanded the IV part of the mounting base of FIG. It is the perspective view which closed the lid | cover of the power supply device of FIG. FIG. 6 is a cross-sectional view of the power supply device cut along line VI-VI in FIG. 5. It is a figure explaining the gravity center position of the power supply device in the state where the battery pack is not attached at all. It is a figure explaining the gravity center position of the power supply device in the state where all four battery packs were mounted. It is a top view which shows typically the mounting base which concerns on 2nd Embodiment. It is a front view which shows typically the mounting base which concerns on 3rd Embodiment. It is a left view which shows typically the mounting base which concerns on 4th Embodiment. It is a top view which shows typically the mounting base which concerns on 4th Embodiment. It is a left view which shows typically the mounting base which concerns on the modification of 4th Embodiment. It is a left view which shows typically the mounting base which concerns on 5th Embodiment. It is a left view which shows typically the mounting base which concerns on 6th Embodiment. It is a left view which shows typically the mounting base which concerns on the modification of 6th Embodiment. It is a left view which shows typically the mounting base which concerns on 7th Embodiment. It is a left view which shows typically the mounting base which concerns on 8th Embodiment.

Hereinafter, the power supply device 10, the battery pack 80, and the mounting portion T30 for the electric tool T according to the first embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 3, the power supply device 10 is configured such that the battery pack 80 is detachable, converts a direct current from the attached battery pack 80 into an alternating current, and supplies electric power by the alternating current to the outside. It is a possible power supply. The battery pack 80 that can be attached to and detached from the power supply device 10 is a rechargeable battery pack that is normally detachably attached to a portable electric tool T (see FIG. 2) and used as a power source. The electric tool T illustrated in FIG. 2 is an electric impact driver, but is not limited thereto, and may be an electric driver, an electric saw, or the like. As will be described later, the power supply device 10 is formed with a mounting portion 30 having the same mechanical and electrical form as the mounting portion T30 of the battery pack provided in the electric tool T. For this reason, the battery pack 80 and the battery pack mounting portion T30 provided in the electric tool T will be described first. The description of the battery pack 80 and the mounting portion T30 is common to other embodiments described later.

FIG. 1 shows a battery pack 80. Here, the direction related to the battery pack 80 is determined as shown in FIG. The battery pack 80 includes a plurality of battery cells (not shown) and a control circuit inside the case 81. The battery cell is a rechargeable secondary battery, and the control circuit measures the state of the battery cell such as the remaining amount and voltage as needed, and generates a signal including these pieces of information. The battery pack 80 includes positive and negative electrodes 82 and a communication terminal 83 as electrical connection means (contacts) with the electric tool T. The electrodes 82 are provided in slits respectively provided on the left and right sides of the lower surface of the case 81 of the battery pack 80, and output DC current from the battery cells inside the case 81. The communication terminal 83 is disposed between these electrodes 82 and outputs a signal generated by the control circuit.

The attachment / detachment method of the battery pack 80 is a slide attachment type. That is, the battery pack 80 is a battery pack in which the attaching / detaching operation with respect to the mounting portion is a sliding operation. The battery pack 80 includes a pair of guided portions 84 as a guide mechanism that guides a sliding operation at the time of attachment / detachment with respect to the mounting portion T30 provided in the electric tool T. The guided portions 84 are disposed in parallel to each other on the left and right outer sides of the electrodes 82 below the case 81 of the battery pack 80. Each guided portion 84 has a flange portion 84a that extends in the front-rear direction while projecting outward in a flange shape.

The battery pack 80 includes a lock claw 85, an urging spring (not shown), and a release button 86 as a lock mechanism that restricts the sliding operation in the mounting state with respect to the mounting portion T30. The lock claw 85 penetrates the front end portion of the lower surface of the case 81 of the battery pack 80 and is provided so as to be movable up and down. The lock claw 85 is exposed to the outside from the lower surface of the case 81 when moved downward, and is housed inside the lower surface of the case 81 when moved upward. The urging spring is provided inside the case 81 and urges the lock claw 85 in a direction to expose the case 81 to the outside. The release button 86 is provided on the front surface of the case 81 and is configured to be movable integrally with the lock claw 85 through the inside of the case 81. When the release button 86 is slid upwardly against the urging force of the urging spring, the lock claw 85 is housed inside the case 81.

Next, the battery pack mounting portion T30 provided in the electric tool T will be described. FIG. 2 shows a battery pack mounting portion T30 provided in the electric tool T. Here, the direction related to the mounting part T30 is determined as shown in FIG. 2 in accordance with the direction related to the mounting part 30 provided on the mounting base 20 described later.

The mounting portion T30 includes a positive and negative electrode T35 and a communication terminal T36 as a configuration on the mounting portion T30 side of the electrical connection means. The bipolar electrodes T35 are provided as a rectangular metal plate in parallel to each other with a space left and right. The electrode T35 is inserted into a slit provided in the battery pack 80 and connected to the electrode 82 on the battery pack 80 side, so that a direct current from the battery pack 80 is input. The electric tool T is driven by the electric power generated by the direct current. The communication terminal T36 is provided between the electrodes T35, and is connected to the communication terminal 83 on the battery pack 80 side so that the signal from the battery pack 80 is input.

The mounting portion T30 includes a pair of left and right guide rails T31 extending in the front-rear direction as a configuration on the mounting portion T30 side of the guide mechanism. The guide rails T31 are provided in parallel to each other on the left and right outer sides of the electrode T35. Each of the left and right guide rails T31 has a groove portion T31a that extends in the front-rear direction while being recessed outward on the inner side, which is a side facing each other. The flange portion 84a of the guided portion 84 provided on the battery pack 80 side can be inserted and fitted into the groove portion T31a from the front. In the fitted state of the flange portion 84a, the battery pack 80 is slidable along the guide rail T31 in the front-rear direction, and is in an engaged state that cannot be detached from the guide rail T31 in the up-down and left-right directions. .

The mounting portion T30 includes a locking hole T32 as a configuration on the mounting portion T30 side of the lock mechanism. The disposition position of the locking hole T32 is a position where the lock claw 85 can be received when the battery pack 80 is slid rearward. When the locking claw 85 is exposed to the outside of the case 81 and received in the locking hole T32, the locking mechanism is locked, and the battery pack 80 is locked so as not to be slidable in the front-rear direction. When the battery pack 80 is locked in this manner, the battery pack 80 is completely attached to the attachment portion T30. The battery pack 80 is in a state of being normally electrically connected to the electric power tool T at a position where the battery pack 80 is completely attached to the attachment portion T30. When the release button 86 is slid upward and the lock claw 85 is housed inside the case 81, the lock mechanism is released, and the battery pack 80 is released from the locked state in the front-rear direction and can be slid again. As a result, the battery pack 80 can be removed by being pulled forward from the mounting portion T30.

Next, the power supply device 10 according to the first embodiment will be described with reference to FIGS. The direction related to the power supply device 10 is determined as shown in each drawing. The power supply device 10 generally includes a mounting base 20 on which the battery pack 80 is mounted and a lid 50 that closes the upper surface side of the mounting base 20. The mounting base 20 also serves as a board housing to protect the circuit board 23 inside as shown in FIG. FIG. 3 shows the power supply device 10 with the lid 50 opened, and FIG. 5 shows the lid 50 closed. The power supply device 10 is normally used by being placed on the floor or a table in the posture shown in FIG. Hereinafter, this posture is referred to as a normal placement posture. FIG. 6 is a cross-sectional view showing the power supply device 10 in the normal mounting posture cut along the line VI-VI shown in FIG.

The power supply device 10 generally has a rectangular parallelepiped box shape when the lid 50 is closed. As shown in FIG. 6, a hinge structure 28 that rotatably supports the lid 50 with respect to the mounting table 20 is provided on the left edge of the upper surface 20 a of the mounting table 20. On the other hand, a lid locking mechanism 29 that locks the lid 50 in a closed state is provided on the right side of the mounting base 20. In a state where the lid 50 is closed, the battery pack 80 cannot be detached from the outside of the power supply device 10. That is, when the lid 50 is closed with respect to the mounting base 20 on which the battery pack 80 is mounted, the battery pack 80 is protected inside the accommodation space formed by being surrounded by the mounting base 20 and the lid 50.

A handle 11 is provided on the upper side of the lid 50 in the state of FIG. 5 in which the lid 50 is closed. As described above, the handle 11 is disposed so as to be positioned above the closed lid 50 in the normal mounting state of the power supply device 10. Further, the buffer protection material 12 is attached to the power supply device 10 so as to cover the vicinity of the eight apexes of the rectangular parallelepiped box shape in the state where the lid 50 is closed. As a result, the power supply device 10 is in contact with the floor surface via the buffer protection member 12 in any posture (including a normal placement posture), and thus is protected from an impact received when the power supply device 10 falls and falls.

Since the battery pack 80, which is generally a heavy object, is mounted on the power supply device 10, the weight balance between the constituent members is adjusted so that the overall center of gravity position is set as follows. The center of gravity position will be described with reference to FIGS. The line C shown in FIG. 7 and FIG. 8 is h from the lower end when the height from the lower buffer protective material 12 to the upper buffer protective material 12 is h in the power supply device 10 in the normal mounting posture. This is a line indicating the height position of / 2, that is, the center position in the height direction. As shown in FIG. 8, the center of gravity G4 of the entire power supply apparatus 10 in a state where all four battery packs 80 are mounted is set to be lower than the center position C in the height direction in the normal placement posture. ing. In the power supply device 10 of the present embodiment, as shown in FIG. 8, all the battery packs 80 are mounted at a position higher than the center position C in the height direction. For this reason, as shown in FIG. 7, the entire center of gravity position G0 in a state where the battery pack 80 is not attached is naturally lower than the above-described center of gravity position G4, and therefore is lower than the center position C in the height direction. Become.

The battery pack mounting base 20 has a generally rectangular parallelepiped box-shaped outer shape, as shown in FIG. The mounting base 20 has a rectangular box-shaped upper surface 20a side set as a mounting side of the battery pack 80, and all the battery packs 80 are mounted on the upper surface 20a side. The mounting portion 30 for mounting the battery pack 80 on the upper surface 20a side will be described later.

As shown in FIG. 6, the mounting base 20 includes a circuit board 23 inside a box shape as a board housing. On the circuit board 23, a power supply circuit (not shown) for supplying power to the outside is arranged. The power supply circuit includes an inverter circuit that converts a direct current input from the attached battery pack 80 into an alternating current. The inverter circuit includes a coil. The power supply circuit supplies the converted electric current to the outside by outputting the converted alternating current from the output outlet 26. The circuit board 23 is fixed to the box-shaped inner wall 20 c of the mounting base 20 via an elastic material 24.

As shown in FIG. 3, the remaining amount display part 25 of the corresponding battery pack 80 is provided in the vicinity of the front side of each mounting part 30 on the top surface 20 a of the mounting base 20. Each remaining amount display unit 25 is electrically connected to the power supply circuit on the circuit board 23, and information on the remaining amount received from the corresponding battery pack 80 via the power supply circuit is displayed by the LED. Display so as to be visible.

The upper part of the right side surface of the mounting base 20 is a covering surface 20 b that is covered by an extension portion 50 a described later provided on the lid 50. An output outlet 26 for outputting an alternating current is provided on the covering surface 20b. In the present embodiment, the output outlet section referred to in the present invention corresponds to the output outlet 26. As shown in FIG. 6, the output outlet 26 is a plug receptacle into which an insertion plug 91 of an electric cord 90 provided in an external device can be inserted. When the insertion plug 91 is inserted, the electric cord is output from the output outlet 26. After 90, an alternating current is supplied to the external device.

As shown in FIGS. 7 and 8, the position of the output outlet 26 is lower than the gravity center positions G0 and G4 of the entire power supply device 10 in the normal placement posture regardless of whether the battery pack 80 is attached or not. Set to position. 7 and 8 indicate the arrangement height of the output outlet 26 in the normal mounting posture of the power supply device 10.

In the vicinity of the left edge of the upper surface 20a of the mounting base 20, a closing detection switch 27 that detects a state in which the lid 50 is closed is provided so as to be movable up and down through the upper surface 20a. When the lid 50 is not completely closed, the closing detection switch 27 is pushed upward by an urging means (not shown) to be cut off, and when the lid 50 is completely closed, the incomplete mounting described later is performed. The detection rib 52 is pushed downward to enter an inset state. The blockage detection switch 27 is electrically connected to a power supply circuit on the circuit board 23, and an alternating current output by the power supply circuit is enabled when the blockage detection switch 27 is turned on. It is comprised so that it may interrupt | block in 27 cut states. Thereby, it is possible to prevent the power supply device 10 from being used without closing the lid 50.

The lid 50 has a generally rectangular parallelepiped box shape with the lower side opened in the closed state as shown in FIG. On the lower right side of the box shape of the lid 50, an extending portion 50a extending downward from the box-shaped right wall portion beyond the opening end is formed. The extending portion 50a covers the covering surface 20b (see FIG. 3) which is a part of the right side surface of the mounting base 20 in a state where the lid 50 is closed.

In the extended portion 50a, an outlet window 51 is provided through the thickness thereof. The position of the outlet window 51 in the extended portion 50 a is a position where the output outlet provided on the covering surface 20 b of the mounting base 20 is exposed to the outside through the outlet window 51 when the lid 50 is closed. Yes. As a result, as shown in FIG. 6, in the state where the plug 91 is inserted into the output outlet, the plug 50 cannot be opened because the plug 91 is caught on the inner periphery of the outlet window 51. Therefore, it is possible to prevent the battery pack 80 from being accidentally detached from the mounting portion 30 during use of the power supply device 10.

An incomplete mounting detection rib 52 for detecting an incomplete mounting state of the battery pack 80 on the mounting base 20 is provided in a wall shape parallel to the front wall portion of the lid 50 inside the box shape of the lid 50. Yes. The incomplete mounting detection rib 52 is disposed at a position facing the front side of the battery pack 80 in the state of FIG. 5 in which the battery pack 80 is completely mounted on the mounting base 20 and the lid 50 is closed. Yes. Accordingly, if at least one of the four battery packs 80 is in an incompletely mounted state, the incompletely mounted detection rib 52 comes into contact with the battery pack 80 and the lid 50 cannot be closed. Therefore, it is possible to prevent the power supply device 10 from being used while the electrical connection of the battery pack 80 is incomplete.

As shown in FIG. 3, four mounting portions 30 on which the battery pack 80 is mounted are arranged in a line in the left-right direction on the upper surface 20a of the mounting base 20. As clearly shown in the figure, the four mounting portions 30 are disposed so as to be exposed to the outside of the top surface 20a of the mounting base 20, whereby each battery pack 80 is also mounted outside the top surface 20a of the mounting base 20. It is attached to and detached from the part 30. Further, the four mounting portions 30 are arranged on the upper surface 20a of the mounting base 20 with a space between each other, so that there is a gap between the two battery packs 80 mounted on the mounting portions 30 adjacent to each other. It is formed. By disposing the mounting portion 30 in this way, spaces are formed on the front and rear sides and the left and right sides of each battery pack 80 so that the battery pack 80 can be gripped during a sliding operation.

4 and 2, each mounting portion 30 is formed in the same mechanical form as the battery pack mounting portion T30 in the electric power tool T described above. That is, each mounting portion 30 includes an electrical connection means with the battery pack 80, a guide mechanism that guides the sliding operation when the battery pack 80 is attached and detached, and a lock mechanism that regulates the sliding operation when the battery pack 80 is mounted. Is provided with the same configuration as that of the electric tool T described above.

Each mounting unit 30 includes a positive and negative electrode 35 and a communication terminal 36 as a configuration on the mounting unit 30 side of means for electrical connection with the battery pack 80. The details of the electrode 35 and the communication terminal 36 are the same as those of the electrode T35 and the communication terminal T36 provided in the power tool T described above. The electrode 35 and the communication terminal 36 are electrically connected to a power supply circuit on the circuit board 23 through a cable.

Each mounting portion 30 includes a pair of left and right guide rails 31 extending in the front-rear direction as a configuration on the mounting portion 30 side of the guide mechanism. The guide rails 31 are provided in parallel to each other on the left and right outer sides of the electrodes 35. Each guide rail 31 has a groove portion 31a extending in the front-rear direction while being recessed outwardly on the inner side which is the side facing each other. The flange portion 84a of the guided portion 84 provided on the battery pack 80 side is inserted into the groove portion 31a from the front to the rear (arrow direction shown in FIG. 3) when the battery pack 80 is mounted. And fit. In the fitted state of the flange portion 84a, the battery pack 80 is slidable along the guide rail 31 in the front-rear direction, and is in an engaged state that cannot be detached from the guide rail 31 in the up-down and left-right directions. .
Each mounting portion 30 includes a locking hole 32 as a configuration on the mounting portion 30 side of the lock mechanism. The details of the locking hole 32 are the same as the locking hole T32 provided in the electric tool T described above.

The mounting portions 30 are arranged with the above-described mechanical forms in the same direction. In particular, since the guide rails 31 provided in each mounting portion 30 are arranged in the same direction, the direction of the sliding operation when attaching and detaching each battery pack 80 is unified in the front-rear direction and parallel to each other. . That is, each battery pack 80 is slid from the front to the rear with respect to the corresponding mounting portion 30, and is slid from the rear to the front to be detached. In addition, the orientations (postures) of the battery packs 80 when attaching and detaching are the same.

As described above, since the power supply device 10 of the present embodiment is provided with the mounting portion 30 having the same mechanical configuration as the mounting portion T30 of the electric tool T, the battery pack 80 for the electric tool is attached and detached. It can be mounted as possible. As a result, if a spare battery pack 80 for a power tool is connected to the power supply device 10 at a work site such as a construction site where the power tool T is used, power is supplied to electrical devices other than the power tool T. It becomes possible. Work sites such as construction sites where electric tools are used are often difficult or inconvenient to use a commercial power supply, so use in such locations is particularly advantageous.

In particular, since the power supply device 10 is provided with a guide mechanism and a lock mechanism having the same mechanical form as that of the electric tool T, the operator can feel the electric tool with the same feeling as when attaching to and detaching from the electric tool T. The battery pack 80 can be attached to and detached from the power supply device 10. Therefore, the battery pack 80 can be easily attached and detached. Further, since the power supply device 10 can attach the battery pack 80 with the same holding force as when the power tool T is attached to the power tool T, the power supply device 10 can be used in the work site environment that is often subjected to external vibration or impact. Even if the battery pack 80 is used, the battery pack 80 is not easily detached from the mounting portion 30 and is a mechanically reliable device. Furthermore, since the power supply device 10 is provided with electrical connection means having the same mechanical form as that of the electric power tool T, it is an electrically reliable device.

Further, since the four mounting portions 30 are provided on the same surface (upper surface 20a) side of the mounting base 20 set as the mounting side of the battery pack 80, a plurality of battery packs 80 can be easily attached and detached. In particular, the direction of the sliding operation of each battery pack 80 is unified in the front-rear direction and parallel to each other. That is, each battery pack 80 is slid from the front to the rear with respect to the corresponding mounting portion 30, and is slid from the rear to the front to be detached. For this reason, when a plurality of battery packs 80 are mounted, the battery packs 80 can be slid in the same direction. Further, the guide rails 31 of the mounting portions 30 are arranged with their mechanical forms in the same direction. For this reason, when a plurality of battery packs 80 are mounted, each battery pack 80 can be held and detached in the same direction.

Furthermore, since a space that allows the battery pack 80 to be gripped is secured around the battery pack 80 to be mounted, the battery pack 80 can be easily gripped when the battery pack 80 is slid. Therefore, the battery pack 80 can be easily attached and detached. In particular, since the entire battery pack 80 to be mounted protrudes outside the upper surface 20 a of the mounting table 20, a sufficient space can be secured around the battery pack 80 so that the battery pack 80 can be gripped. In addition, since a space in which the battery pack 80 can be gripped is formed between the adjacent battery packs 80 on the upper surface 20a of the mounting base 20, the battery pack 80 can be used even when a plurality of battery packs 80 are mounted. A space that allows gripping is secured.

In addition, since the circuit board 23 on which the power supply circuit for supplying power to the outside is arranged is fixed to the box-shaped inner wall 20c of the mounting base 20 as the board housing via the elastic member 24, the work site It is possible to reduce adverse effects on the power supply circuit due to vibrations generated in the environment. Further, since the protector is provided so as to cover the eight corners of the power supply device 10, the power supply device 10 is protected from an external impact caused by a fall or fall during use or transportation.

By the way, because the environment such as the work site is an environment where the traffic of the workers and the transportation of materials are continual, when the power supply device is placed and used in such an environment, the workers and materials accidentally come into contact. This may cause the power supply device to fall. Generally, a battery is heavy and has a great influence on the weight balance of the apparatus. According to this embodiment, even if the center of gravity of the entire power supply device 10 including the battery pack 80 rises to the position G4 shown in FIG. The center-of-gravity position G4 is suppressed to be lower than the center position C in the height direction shown in FIG. For this reason, the mounting attitude | position of the power supply device 10 in use can be stabilized, and the fall of the power supply device 10 can be suppressed. As the number of battery packs that can be mounted aiming at high output and large capacity increases, the influence of the displacement of the center of gravity of the entire power supply device due to the attachment of the battery pack increases, so the above effect is further effective.

Further, as shown in FIG. 7, even when the battery pack 80 is not attached at all, the center of gravity position G0 of the power supply device 10 as a whole can be kept lower than the center position C in the height direction in the normal placement posture. ing. For this reason, the mounting posture of the power supply device 10 when the battery pack 80 is not attached can be stabilized, and the power supply device 10 can be prevented from falling.

In addition, the arrangement position L of the output outlet 26 is lower than the center position C in the height direction of the power supply device 10. In particular, regardless of whether the battery pack 80 is attached or not, the arrangement position L of the output outlet 26 is set to be lower than the center of gravity positions G0 and G4 of the power supply device 10 as a whole. For this reason, the electric cord 90 connected to the output outlet 26 was pulled due to accidental contact of an operator or material while the power supply device 10 was placed in a normal placement posture and used. Even in this case, the power supply device 10 can be prevented from falling.

Next, another embodiment of the present invention will be described with reference to the drawings. Of the following embodiments, portions that do not require substantial changes from the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. First, in the second embodiment of the present invention, as shown in FIG. 9, in the power supply device 210, the upper surface 220a side of the mounting base 220 is the battery pack mounting side, and the battery pack mounting portion 230 is on the upper surface 220a. Three are arranged in a line in the left-right direction. Each mounting portion 230 has the same mechanical configuration as the mounting portion T30 (see FIG. 2) included in the electric power tool T as in the first embodiment, and includes a pair of guide rails 231. In the second embodiment, adjacent mounting portions 230 are arranged in opposite directions. As described above, when the guide rails 231 included in each mounting portion 230 are in opposite directions, the direction of the sliding operation when attaching or detaching each battery pack 80 can be alternated as shown by the arrows in the drawing. Even in the second embodiment, as in the first embodiment described above, the direction of the sliding operation when attaching and detaching each battery pack 80 may be configured to match. It is an embodiment that coincides with respect to the same plane according to the present invention.

Next, in the third embodiment of the present invention, as shown in FIG. 10, the mounting base 320 of the power supply device 310 has the upper surface 320 a side as the mounting side of the battery pack as in the second embodiment, Three battery pack mounting portions 330 are arranged in a line in the left-right direction on the upper surface 320a. Each mounting portion 330 has the same mechanical configuration as the mounting portion T30 (see FIG. 2) included in the electric power tool T, as in the first embodiment, and includes a guide rail 331.

Unlike the first embodiment, each mounting portion 330 is arranged at a distance from each other on the upper surface 320a of the mounting base 320, so that it is between two battery packs 80 that are attached to and detached from adjacent mounting portions 330. There is no gap formed. However, as in the first embodiment, each mounting portion 330 is exposed and disposed outside the upper surface 320a of the mounting base 320, so that the front and rear sides of each battery pack 80 to be attached and detached (see FIG. 10). A space that allows the battery pack 80 to be gripped during the sliding operation is formed on the front side and the back side of the drawing.

Further, unlike the first embodiment, one of the guide rails 331 that forms a pair in each mounting portion 330 (the right side in the figure) is disposed at a higher position than the other (the left side in the figure). Accordingly, each battery pack 80 is mounted in a posture inclined to the left in FIG. 10, and the upper surfaces of the three battery packs 80 are in a positional relationship in which a step is formed at each boundary. Therefore, for the leftmost battery pack 80 in FIG. 10, a space 3 </ b> S that allows the battery pack 80 to be gripped during the sliding operation is also formed on the left and right sides. In the state where the leftmost battery pack 80 is detached, a space that allows the battery pack 80 to be gripped is formed on the left and right sides of the central battery pack 80 as well.

Next, in the fourth embodiment of the present invention, as shown in FIG. 11, unlike the first embodiment, in the power supply apparatus 410, the front surface 420a side of the mounting base 420 is the mounting side of the battery pack. . The front surface 420a of the mounting base 420 has a hollow shape with a central portion recessed inward of the mounting base 420, and an integral space in which three battery packs 80 can be accommodated is formed. On the front surface 420a of the mounting table 420, a lid 450 for closing the hollow shape is rotatably supported.

As shown in FIG. 12, three mounting portions 430 for the battery pack are arranged in a line in the left-right direction on the bottom surface 420d (surface located in the back) of the hollow shape. Each mounting portion 430 has the same mechanical configuration as the mounting portion T30 (see FIG. 2) included in the electric power tool T as in the first embodiment, and includes a pair of guide rails 431. The mounting portions 430 are arranged in the same direction as each other, and the direction of the sliding operation when the battery packs 80 are attached / detached is unified in the vertical direction and parallel to each other. That is, each battery pack 80 is attached to the corresponding attachment portion 430 by sliding from the upper side to the lower side inside the hollow shape, and is slid from the lower side to the upper side to be detached.

The mounting portions 430 are disposed with a space between each other, and are also spaced with respect to the respective wall surfaces 420e located on the upper, lower, left, and right sides of the depression shape. In particular, among the battery packs 80, the front part of the surface represented by the broken line in FIG. 11 can hold the battery pack 80 on the upper and lower sides (see FIG. 11) and the left and right sides (see FIG. 12). A space 4S is formed. Therefore, the fourth embodiment is substantially equivalent to a case where a part of the battery pack 80 protrudes outside the front surface 420a of the mounting base 420 as in the modification shown in FIG.

Next, in the fifth embodiment of the present invention, as shown in FIG. 14, the power supply device 510 has a concave shape formed on the front surface 520 a of the mounting base 520, as in the fourth embodiment. A battery pack mounting portion 530 is provided on the bottom surface 520d of the hollow shape. However, unlike the fourth embodiment, the battery pack 80 is mounted in a state of being in contact with the lower wall surface 520f of the hollow shape. Further, the shape of the case 81 of the battery pack 80 is a shape having a chamfered portion 81a so as to avoid complete contact with the lower wall surface 520f of the hollow shape. For this reason, even in the mounted state, a space 5S is formed on the upper and lower sides of the battery pack 80 so that the battery pack 80 can be gripped during the sliding operation.

Next, in the sixth embodiment of the present invention, as shown in FIG. 15, in the power supply device 610, the front surface 620a side of the mounting base 620 is the mounting side of the battery pack, as in the fourth embodiment. Three battery packs 80 can be attached. However, unlike the fourth embodiment, on the front surface 620a of the mounting base 620, three insertion holes that can be accommodated by inserting the battery pack 80 therein are formed independently in a line in the vertical direction. On the front surface 620a of the mounting base 620, a lid 650 that simultaneously closes these three insertion holes is rotatably supported.

A battery pack mounting portion 630 is provided on the upper wall surface 620d of each insertion hole. Each mounting portion 630 has the same mechanical configuration as the mounting portion T30 (see FIG. 2) included in the electric power tool T as in the first embodiment, and includes a pair of guide rails 631. The mounting portions 630 are arranged in the same direction with respect to each other, and the direction of the sliding operation when the battery packs 80 are attached and detached is unified in the front-rear direction and parallel to each other. That is, each battery pack 80 is slid and attached to the corresponding attachment portion 630 so as to be inserted into the insertion hole from the front, and is slid so as to be extracted forward from the inside of the hollow shape.

The placement position of the mounting portion 630 on the upper wall surface 620d of each insertion hole is set so that a part of the mounted battery pack 80 protrudes outside the front surface 620a of the mounting base 620. As a result, among the battery packs 80, the front part of the front surface 620a of the mounting base 620 (the surface represented by the broken line in FIG. 15) can hold the battery pack 80 on the upper and lower sides and the left and right sides. A space 6S is formed. In addition, this 6th Embodiment is good also as a form which inclined the direction of the slide operation | movement upward uniformly considering the ease of attachment or detachment of the battery pack 80, as shown in FIG. 16 as a modification.

Next, in the seventh embodiment of the present invention, as shown in FIG. 17, in the power supply device 710, the battery pack 80 is inserted into the front surface 720a of the mounting base 720 as in the sixth embodiment. An accommodable insertion hole is formed, and a battery pack mounting portion 730 is provided on the upper wall surface of the insertion hole. However, unlike the sixth embodiment, the mounting position of the mounting portion 730 on the upper wall surface of each insertion hole is such that the entire mounted battery pack 80 is buried inside the front surface 720a of the mounting base 720. Is set. Further, the shape of the case 81 of the battery pack 80 is a shape having a chamfered portion 81a so as to avoid complete contact with the upper wall surface and the lower wall surface of the insertion hole. For this reason, even in the mounted state, a space 7S is formed on the upper and lower sides of the battery pack 80 so that the battery pack 80 can be gripped during the sliding operation.

Next, in the eighth embodiment of the present invention, as shown in FIG. 18, in the power supply device 810, the battery pack 80 is inserted into the front surface 820a of the mounting base 820 as in the sixth embodiment. Three insertion holes that can be accommodated are formed in a line in the vertical direction. In addition, the battery pack mounting portion 830 is provided on the wall surface of the insertion hole, but unlike the sixth embodiment, the mounting surface 820d of the mounting portion 830 is below the center insertion hole. The upper and lower insertion holes are the upper wall surfaces. Therefore, the direction of the sliding operation when attaching and detaching each battery pack 80 is unified in the front-rear direction and parallel to each other, but the directions of the battery packs 80 are alternately turned over unlike the sixth embodiment. It becomes the direction.

Although the embodiment of the present invention has been described with reference to the above-described structure, it will be apparent to those skilled in the art that many alternations, improvements, and changes can be made without departing from the object of the present invention. Accordingly, embodiments of the invention may include all alterations, modifications, and changes that do not depart from the spirit and scope of the appended claims. For example, the embodiment of the present invention is not limited to the specific structure described above, and can be modified as follows.

The attachment / detachment method of the battery pack 80 according to each of the embodiments described above was a slide attachment type in which the battery pack 80 is attached by being slid along a guide rail provided on the attachment portion side. However, the battery pack 80 is not limited to this, and the electrode and the guide mechanism may be arranged in any shape and positional relationship on the surface of the case 81. For example, even if it uses a plug-in type battery pack that is inserted into an insertion hole formed in accordance with the shape of the case of the battery pack and connected to an electrode provided on the bottom surface of the insertion hole Good. The guide mechanism in this case corresponds to the shape of the battery pack case and the wall surface shape of the insertion hole.

In addition, in the mounting base 20 according to each of the above-described embodiments, a specific surface side (the upper surface side or the front surface side of the rectangular parallelepiped box shape) is set as the mounting side of the battery pack 80, and all the battery packs 80 are the specific same. It was attached to the surface side. This is applicable even when the mounting base 20 is not configured by a flat surface such as a rectangular parallelepiped box shape. For example, the mounting table 20 may be provided with undulations such as a step (see the third embodiment), a depression (see the fourth embodiment), a curved surface, or the like that can be regarded as substantially the same surface on a specific surface side. .

In addition, the power supply device according to each embodiment described above is not only placed with the lower surface defined in the above description facing the floor side, but also with a different surface facing the floor side. Even if installed, it can be used without impairing the function as a power supply device. For example, in the state shown in FIG. 5 in which the lid 50 is closed, the power supply device of the first embodiment may be placed with any surface other than the right surface provided with the output outlet as the floor side. In the fourth embodiment, for example, the rear surface shown in FIG. 11 may be placed on the floor side.

Moreover, the power supply device according to each of the above-described embodiments converts a direct current from each battery pack into an alternating current and outputs the alternating current, and supplies power by the alternating current. However, a configuration may be adopted in which a direct current from the battery pack is output as it is and power is supplied by this direct current.

Claims

Multiple battery packs can be installed,
It is a transportable power supply device that converts a direct current from the mounted battery pack into an alternating current, and supplies power by the alternating current to the outside,
The mountable battery pack is a rechargeable battery pack that is detachably mounted on the mounting portion of the power tool and used as a power source for the power tool,
A mounting portion having the same mechanical form as the mounting portion of the electric tool is provided,
The battery pack is a power supply device that is detachably mounted on the mounting portion.
The power supply device according to claim 1,
A mounting base having a box shape to which the battery pack is mounted;
A power supply device in which a plurality of the mounting portions are provided on the same surface side of the mounting base.
The power supply device according to claim 2,
Each of the mounting portions includes a guide mechanism for guiding the attachment and detachment operation of the battery pack as the mechanical form,
The guide mechanism provided in each of the mounting portions is a power supply device arranged such that directions for guiding the battery pack attaching / detaching operation are parallel to each other.
The power supply device according to claim 3,
Each of the mounting portions is a power supply device arranged with the mechanical form in the same direction.
The power supply device according to any one of claims 1 to 4,
The battery pack mounting portion is a power supply device in which a space capable of gripping the battery pack is formed around the mounted battery pack.
The power supply device according to claim 5,
The space formed around the battery pack is a power supply device formed by protruding at least a part of the battery pack to be mounted outside of the same surface of the mounting base.
The power supply device according to claim 5,
The space formed around the battery pack is a power supply device that is shared between adjacent battery packs on the same surface side of the mounting base of the battery pack.
The power supply device according to any one of claims 1 to 7,
A power supply circuit for supplying power from the battery pack to the outside is disposed inside the box shape of the mounting base,
A power supply device in which a circuit board on which the power supply circuit is arranged is fixed to the mounting base via an elastic material.
The power supply device according to any one of claims 1 to 8,
The power supply device in which the protector is provided in the outer surface of the said power supply device made said transportable.
The power supply device according to any one of claims 1 to 9,
A power supply apparatus that is set such that an overall center-of-gravity position in a state where the battery pack is mounted is lower than a center position in a height direction in a normal placement posture.
The power supply device according to any one of claims 1 to 10,
A power supply apparatus configured such that an overall center of gravity position in a state in which the battery pack is not mounted is lower than a center position in a height direction in a normal placement posture.
The power supply device according to claim 10 or 11,
An electrical outlet can be connected and includes an output outlet that outputs the alternating current,
A power supply apparatus in which the position of the output outlet is set to be lower than the center of gravity in a normal placement posture.
The power supply device according to claim 10 or 11,
An electrical outlet can be connected and includes an output outlet that outputs the alternating current,
A power supply device in which the position of the output outlet portion is set to be lower than the center position in the height direction in a normal placement posture.