JP5784413B2 - Power supply - Google Patents

Description

The present invention relates to a power supply device that can be mounted with a secondary battery and can supply the power of the mounted secondary battery to the outside.

As a power supply device that can be mounted with a secondary battery and can supply the power of the mounted secondary battery to the outside, for example, a device described in Patent Document 1 below is known. From a functional point of view, such a power supply device can be regarded as a replacement of an energy source such as gasoline in a generator with a secondary battery.

JP 2010-225283 A

By the way, in such a power supply device, if a battery pack used by being attached to an electric tool can be mounted as the secondary battery, a spare battery pack can be used at a work site such as a construction site where the electric tool is used. It becomes possible to supply electric power to an external electric device including an electric tool using. In particular, in such work sites, it is often difficult or inconvenient to use a commercial power supply, so the use of the power supply apparatus is useful.

The present invention is an invention made from the above viewpoint, and a problem to be solved by the present invention is that a secondary battery can be mounted and a power supply device capable of supplying the power to the outside is provided with the secondary battery. A battery pack for an electric tool can be detachably mounted as a battery.

In order to solve the above problems, the power supply apparatus according to the present invention takes the following means.
The power supply device according to the first aspect of the present invention can be mounted with a plurality of secondary batteries, converts a direct current from the mounted secondary battery into an alternating current, and uses the alternating current as an external power. A power supply device that can be transported to a battery pack, wherein the mountable secondary battery is a battery pack that is detachably mounted on a mounting portion of the power tool and used as a power source for the power tool, and the power tool has 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 configuration, since the power supply device is provided with the mounting portion having the same form as that of the electric tool, the battery pack for the electric tool can be detachably mounted as the secondary battery. . 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.
In particular, since the power supply device is provided with a mounting portion having the same mechanical form as that of the power tool, the operator can connect the power tool battery pack to the power source in the same sense as when the power tool is attached to or detached from the power tool. It is detachable from the device. Therefore, the battery pack can be easily attached and detached.

A power supply apparatus according to a second invention of the present invention is the power supply apparatus according to the first invention, comprising a mounting base having a box shape on which the battery pack is mounted, and a plurality of power mounting apparatuses on the same surface side of the mounting base. The mounting portion is provided.
According to this configuration, since the plurality of mounting portions are provided on the same surface side of the mounting base set as the mounting side of the battery pack, the plurality of battery packs can be easily attached and detached.

A power supply device according to a third aspect of the present invention is the power supply device according to the second aspect, wherein each of the mounting portions includes a guide mechanism for guiding the attachment / detachment operation of the battery pack as the mechanical form. The guide mechanisms provided in the respective mounting portions are arranged such that directions for guiding the battery pack attaching / detaching operation are parallel to each other.
According to this configuration, since the guide directions of the attachment / detachment operation of each battery pack are parallel to each other, each battery pack can be attached / detached from the same direction when a plurality of battery packs are attached. Therefore, it becomes easier to attach and detach the plurality of battery packs.

A power supply device according to a fourth invention of the present invention is the power supply device according to the third invention, characterized in that each of the mounting portions is arranged with the mechanical forms being in the same direction. To do.
According to this configuration, since the guide mechanism of each mounting portion is disposed in the same direction on the mounting side of the battery pack, when mounting a plurality of battery packs, each battery pack is set in the same direction. It can be attached and detached. Therefore, it becomes easier to attach and detach the plurality of battery packs.

A power supply device according to a fifth aspect of the present invention is the power supply device according to any one of the first to fourth aspects, wherein the mounting portion of the battery pack is disposed around the mounted battery pack. A space in which the battery pack can be held is formed and arranged.
According to this configuration, since a space in which the battery pack can be gripped is secured around the battery pack to be mounted, it is easy to grip the battery pack during the battery pack attaching / detaching operation. Therefore, the attachment / detachment operation of the battery pack is further facilitated.

A power supply device according to a sixth invention of the present invention is the power supply device according to the fifth invention, wherein the space formed around the battery pack is such that at least a part of the battery pack to be mounted is the mounting base. It is formed by protruding outside the surface on the same surface side.
According to this configuration, since a part of the battery pack to be mounted protrudes outside the surface on the same surface side, a sufficient space for gripping the battery pack can be secured around the battery pack. Therefore, the attachment / detachment operation of the battery pack is further facilitated.

A power supply device according to a seventh aspect of the present invention is the power supply device according to the fifth aspect, wherein a space formed around the battery pack is adjacent on the same surface side of the mounting base of the battery pack. It is formed by being shared between matching battery packs.
According to this configuration, since the space in which the battery pack can be gripped is formed between adjacent battery packs on the mounting side of the battery pack, the battery pack can be used even when a plurality of battery packs are mounted. A space capable of gripping is secured. Therefore, the attachment / detachment operation of the plurality of battery packs is further facilitated.

A power supply device according to an eighth aspect of the present invention is the power supply device according to any one of the first to seventh aspects, wherein the power supply circuit for supplying power from the battery pack to the outside is the box of the mounting base. The circuit board is disposed inside the shape, and the circuit board on which the power supply circuit is disposed is fixed to the mounting base via an elastic material.
According to this configuration, since the circuit board on which the power supply circuit for supplying power to the outside is arranged is fixed via the elastic material, it is possible to reduce adverse effects on the circuit due to vibration generated in the work site environment. can do.

A power supply device according to a ninth aspect of the present invention is the power supply device according to any one of the first to eighth aspects, wherein a protector is provided on an outer surface of the power supply device that is made transportable. It is characterized by.
According to this configuration, since the protector is provided on the outer surface of the power supply device, the power supply device is protected from an external impact caused by a fall or drop during use or transportation.

According to 1st invention, the battery pack for electric tools can be detachably mounted as a secondary battery.
According to the second invention, the plurality of battery packs can be easily attached and detached.
According to the third invention, when a plurality of battery packs are mounted, each battery pack can be attached and detached from the same direction, and the plurality of battery packs can be attached and detached more easily.
According to the fourth invention, when a plurality of battery packs are mounted, the battery packs can be held and detached in the same direction, and the plurality of battery packs can be attached and detached more easily.
According to the fifth aspect, the battery pack can be easily gripped during the battery pack attaching / detaching operation, and the battery pack attaching / detaching operation is further facilitated.
According to the sixth aspect of the invention, a sufficient space for gripping the battery pack can be secured around the battery pack, and the battery pack can be attached and detached more easily.
According to the seventh aspect, even when a plurality of battery packs are mounted, a space capable of gripping the battery pack is ensured, and the attachment and detachment operations of the plurality of battery packs are further facilitated.
According to the eighth aspect, it is possible to reduce adverse effects on the circuit due to external vibration or impact.
According to the ninth aspect of the invention, the power supply device is protected from an external impact or the like.

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 a perspective view which shows the power supply device which concerns on 1st Embodiment in the state which closed the lid | cover. It is sectional drawing which cut | disconnects and shows the power supply device which concerns on 1st Embodiment by the VV line of FIG. 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.

[First Embodiment]
Hereinafter, the power supply device 10, the battery pack 80, and the mounting portion T30 for the electric power 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 according to the present embodiment 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 generates electric power by the alternating current. It is a transportable power supply that supplies to the outside. 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. The direction related to the battery pack 80 is determined as shown in FIG. 1 according to the direction related to the mounting base 20 described later.
The battery pack 80 includes a plurality of secondary battery cells (not shown) and a control circuit inside the case 81. The secondary battery cell is a rechargeable battery, and the control circuit measures the state of the secondary battery cell such as the remaining capacity and voltage as needed, and generates a signal including these pieces of information.
The battery pack 80 includes positive and negative electrodes 82 and 82 and a communication terminal 83 as electrical connection means (contacts) with the electric tool T. The electrodes 82 and 82 are provided in slits provided on the left and right sides of the lower surface of the case 81 of the battery pack 80, respectively, and output a direct current from the secondary battery cell inside the case 81. The communication terminal 83 is disposed between the electrodes 82 and 82 and outputs a signal generated by the control circuit.

The battery pack 80 is detachably mounted on the slide. 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 left and right 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 and 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, a 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. In addition, the direction regarding this mounting part T30 is determined as shown in the same figure according to the direction regarding the mounting part 30 provided in the mounting base 20 mentioned later.
The mounting portion T30 includes positive and negative electrodes T35 and T35 and a communication terminal T36 as a configuration on the mounting portion T30 side of the electrical connection means. The bipolar electrodes T35 and T35 are provided as rectangular metal plates in parallel to each other with a space left and right. The electrodes T35 and T35 are inserted into slits provided in the battery pack 80 and connected to the electrodes 82 and 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 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 and T31 extending in the front-rear direction as a configuration on the mounting portion T30 side of the guide mechanism. The pair of guide rails T31 and T31 are provided in parallel to each other on the left and right outer sides of the electrodes T35 and 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. The battery pack 80 is slidable along the guide rails T31 and T31 in the front-rear direction in the fitted state of the flange portion 84a, and cannot be detached from the guide rails T31 and T31 in the vertical and horizontal directions. It becomes a joint state.

  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. 3 and 4. 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. 3 shows the power supply device 10 with the lid 50 opened, and FIG. 4 shows the lid 50 closed.
The power supply device 10 generally has a rectangular parallelepiped box shape when the lid 50 is closed. A hinge structure 28 (see FIG. 5) is provided at the left edge of the upper surface 20a of the mounting table 20 to support the lid 50 so as to be rotatable with respect to 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.
On the upper side of the lid 50 in the closed state, a handle 11 that is gripped when the power supply device 10 is transported is provided. 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 through the buffer protection member 12 in any posture, and thus is protected from an impact received when the power supply device 10 falls and falls.

Next, details of the battery pack mounting base 20 and the lid 50 will be described with reference to FIGS. FIG. 5 is a cross-sectional view of the power supply device 10 shown in FIG. 4 cut along the line V-V.
As shown in FIG. 3, the mounting base 20 has a generally rectangular parallelepiped box-shaped outer shape. 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.
The mounting base 20 has a function of mounting the battery pack 80 and a function of a substrate housing for protecting the circuit board 23 inside. As shown in FIG. 5, the mounting base 20 as a board housing includes a circuit board 23 inside the rectangular box shape. 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 capacity display portion 25 of the corresponding battery pack 80 is provided in the vicinity of the front side of each mounting portion 30 on the top surface 20 a of the mounting base 20. Each remaining capacity display unit 25 is electrically connected to the power supply circuit on the circuit board 23, and information on the remaining capacity 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. As shown in FIG. 5, the output outlet 26 is inserted with a plug 91 of the electric cord 90, so that electric power by the alternating current is supplied through the electric cord 90.
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 provided on the right side surface of the mounting base 20 in a state where the lid 50 is closed.
An outlet window 51 is provided in the extending portion 50a so as to penetrate 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. 5, when the plug 91 is inserted into the output outlet, the plug 91 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. 4 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.

Next, the battery pack mounting portion 30 will be described.
On the upper surface 20a of the mounting base 20, as shown in FIG. 3, four mounting portions 30 to which the battery pack 80 is mounted are arranged in a line in the left-right direction. 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.

Each mounting portion 30 is formed in the same mechanical form as the mounting portion T30 of the battery pack in the electric 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 portion 30 includes positive and negative electrodes 35 and 35 and a communication terminal 36 as a configuration on the mounting portion 30 side of means for electrical connection with the battery pack 80. The details of the electrodes 35 and 35 and the communication terminal 36 are the same as those of the electrodes T35 and T35 and the communication terminal T36 provided in the power tool T described above. The electrodes 35 and 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 that extend in the front-rear direction as a configuration on the mounting portion 30 side of the guide mechanism. The pair of guide rails 31 and 31 are provided in parallel to each other on the left and right outer sides of the electrodes 35 and 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. The battery pack 80 is slidable along the guide rails 31 and 31 in the front-rear direction in the fitted state of the flange portion 84a, and cannot be detached from the guide rails 31 and 31 in the vertical and horizontal directions. It becomes a joint state.
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.

  Each mounting part 30 is arrange | positioned by making the above-mentioned mechanical form into the mutually same direction. In particular, since the guide rails 31 and 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. ing. 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.

The power supply device 10 configured as described above has the following operational effects.
According to this configuration, since the power supply device 10 is provided with the mounting portion 30 having the same mechanical form as the mounting portion T30 of the electric tool T, the battery pack 80 for the electric tool is detachably mounted. Can do. As a result, if a spare battery pack 80 for the electric tool is connected to the power supply device 10 at a work site such as a construction site where the electric tool T is used, electric power is supplied to electric devices other than the electric tool T. Is possible.
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.
In addition, since the battery pack 80 is attached to the power supply device 10 with the same holding force as when attached to the electric tool T, the battery pack 80 can be used in the work site environment that is often subjected to external vibration or impact. Thus, the battery pack 80 is difficult to be detached from the mounting portion 30 and is a mechanically reliable device.
Further, 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.

Furthermore, according to this configuration, 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. It becomes possible.
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.
Moreover, the guide rails 31 of each mounting part 30 are arrange | positioned so that the mechanical form may mutually be 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, according to this configuration, a space is provided around the battery pack 80 to be attached so that the battery pack 80 can be gripped. Therefore, 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.

Further, according to this configuration, 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. Therefore, adverse effects on the power supply circuit due to vibrations or the like generated in the work site environment can be reduced.
Furthermore, according to this configuration, 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. .

[Second Embodiment]
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, a second embodiment of the present invention will be described with reference to FIG. In the power supply apparatus 210 according to the second embodiment, the upper surface 220a side of the mounting base 220 is a battery pack mounting side, and three battery pack mounting portions 230 are arranged in a row in the left-right direction on the upper surface 220a. Each mounting portion 230 has the same mechanical configuration as the mounting portion T30 included in the electric power tool T as in the first embodiment, and includes a pair of guide rails 231 and 231. In the second embodiment, adjacent mounting portions 230 are arranged in opposite directions. As described above, when the guide rails 231 and 231 provided in each mounting portion 230 are in opposite directions, the direction of the sliding operation when the battery packs 80 are attached and detached can be alternated as shown in the arrows in the drawing. it can. 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.

[Third Embodiment]
Next, a third embodiment of the present invention will be described with reference to FIG.
In the mounting base 320 of the power supply device 310 according to the third embodiment, the upper surface 320a side is the battery pack mounting side, and the battery pack mounting portion 330 is left and right on the upper surface 320a, as in the second embodiment. Three are arranged in a line in the direction. Each mounting portion 330 has the same mechanical configuration as the mounting portion T30 included in the electric power tool T as in the first embodiment, and includes a pair of guide rails 331 and 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 (FIG. 7). 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.
In addition, unlike the first embodiment, one of the guide rails 331 and 331 (the right side in the figure) that forms a pair in each mounting portion 330 is disposed at a higher position than the other (the left side in the figure). Thereby, each battery pack 80 is mounted in a posture inclined to the left in FIG. 7, and the upper surfaces of the three battery packs 80 are in a positional relationship in which a step is formed at the boundary between them. Therefore, for the leftmost battery pack 80 in FIG. 7, a space 3S is formed on the left and right sides of the battery pack 80 so that the battery pack 80 can be gripped during the sliding operation. 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.

[Fourth Embodiment]
Next, a fourth embodiment of the present invention will be described with reference to FIGS.
As shown in FIG. 8, the power supply device 410 according to the fourth embodiment differs from the first embodiment in that the front surface 420 a side of the mounting base 420 is the battery pack mounting side. 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. 9, three battery pack mounting portions 430 are arranged in a line in the left-right direction on the bottom surface 420 d (surface located in the back) of the hollow shape. Each mounting portion 430 has the same mechanical configuration as the mounting portion T30 included in the electric power tool T as in the first embodiment, and includes a pair of guide rails 431 and 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.
Each mounting portion 430 is disposed with a space between each other, and is also spaced with respect to each wall surface 420e located on the upper, lower, left, and right sides of the depression shape. In particular, the portion of each battery pack 80 that is in front of the surface represented by the broken line in FIG. 8 can hold the battery pack 80 on the upper and lower sides (see FIG. 8) and the left and right sides (see FIG. 9). 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.

[Fifth Embodiment]
Next, a fifth embodiment of the present invention will be described with reference to FIG.
As in the fourth embodiment, the power supply device 510 according to the fifth embodiment has a recessed shape formed on the front surface 520a of the mounting base 520, and a battery pack mounting portion on the recessed bottom surface 520d. 530 is provided. 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.

[Sixth Embodiment]
Next, a sixth embodiment of the present invention will be described with reference to FIG.
As in the fourth embodiment, the power supply device 610 according to the sixth embodiment has a front surface 620a side of the mounting base 620 as a battery pack mounting side, and three battery packs 80 can be mounted. Yes. 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 included in the electric power tool T as in the first embodiment, and includes a pair of guide rails 631 and 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 mounting 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. 12) 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, as shown in FIG. 13 as a modification, the sixth embodiment may be configured such that the direction of the sliding operation is uniformly inclined upward in consideration of the ease of attaching and detaching the battery pack 80.

[Seventh Embodiment]
Next, a seventh embodiment of the present invention will be described with reference to FIG. Similarly to the sixth embodiment, the power supply device 710 according to the seventh embodiment has a front surface 720a of the mounting base 720 formed with an insertion hole into which the battery pack 80 can be inserted and accommodated. A battery pack mounting portion 730 is provided on the upper wall surface of the 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.

[Eighth Embodiment]
Next, an eighth embodiment of the present invention will be described with reference to FIG. Similarly to the sixth embodiment, the power supply device 810 according to the eighth embodiment has three insertion holes in a row in the vertical direction on the front surface 820a of the mounting base 820 in which the battery pack 80 can be inserted and accommodated. One is formed. 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.

The power supply device according to the present invention is not limited to the above first to eighth embodiments, and can be implemented in various other forms.
First, the attachment / detachment method of the battery pack 80 according to each of the above-described embodiments is 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. 4 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. 8 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.

DESCRIPTION OF SYMBOLS 10 Power supply device 11 Handle 12 Buffer protection material 20 Mounting base 20a Top surface 20b Cover surface 20c Inner wall 23 Circuit board 24 Elastic material 25 Remaining capacity display part 26 Output outlet 27 Blocking detection switch 28 Hinge structure 29 Cover lock mechanism 30 Mounting part 31 Guide rail 32 Locking hole 35 Electrode 36 Communication terminal 50 Lid 50a Extension part 51 Outlet window 52 Incomplete mounting detection rib 80 Battery pack 81 Case 81a Chamfering part 82 Electrode 83 Communication terminal 84 Guided part 84a Flange part 85 Locking claw 86 Release button 90 Electric cord 91 Plug T Electric tool T30 Mounting part T31 Guide rail T32 Locking hole T35 Electrode T36 Communication terminal

Claims (10)

  A plurality of secondary batteries can be mounted, a direct current from the mounted secondary battery is converted into an alternating current, and a power supply device capable of transporting the power by the alternating current to the outside, The mountable secondary battery is a battery pack that is detachably mounted on the mounting portion of the electric tool and used as a power source of the electric tool, and the mounting portion having the same mechanical form as the mounting portion of the electric tool has A power supply apparatus, comprising: the battery pack, wherein the battery pack is detachably mounted on the mounting portion.   The power supply device according to claim 1, further comprising a mounting base having a box shape on which the battery pack is mounted, and a plurality of the mounting portions are provided on the same surface side of the mounting base. Power supply.   3. The power supply device according to claim 2, wherein each of the mounting portions includes a guide mechanism that guides an attaching / detaching operation of the battery pack as the mechanical form, and the guide mechanism included in each of the mounting portions is a battery pack. A power supply device, wherein the directions for guiding the attaching / detaching operations are arranged in parallel to each other.   4. The power supply device according to claim 3, wherein each of the mounting portions is disposed so that the mechanical forms are in the same direction. 5. The power supply device according to claim 2 , wherein the mounting portion of the battery pack is disposed so that a space capable of gripping the battery pack is formed around the mounted battery pack. The power supply device characterized by the above-mentioned.   6. The power supply device according to claim 5, wherein the space formed around the battery pack is such that at least a part of the battery pack to be mounted protrudes outside the surface on the same surface side of the mounting base. A power supply device that is formed.   6. The power supply device according to claim 5, wherein a space formed around the battery pack is formed between adjacent battery packs on the same surface side of the mounting base of the battery pack. A power supply characterized by. The power supply device according to any one of claims 2 to 7, wherein a power supply circuit that supplies power from a battery pack to the outside is disposed inside the box shape of the mounting base, and the power supply circuit A power supply device, wherein the circuit board on which the circuit board is arranged is fixed to the mounting table via an elastic material.   The power supply device according to any one of claims 1 to 8, wherein a protector is provided on an outer surface of the power supply device that is made transportable. 2. The power supply device according to claim 1, wherein the mounting portion of the battery pack is disposed so that a space capable of gripping the battery pack is formed around the mounted battery pack. Power supply.

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