CN111262107A - Electric energy switching component, tool with electric energy switching component and system - Google Patents

Abstract

The present invention provides a power switching member and a tool and system having the power switching member. The power switching device includes a plug-in for connecting to a power supply device, and the plug-in has an output end for outputting power to the outside world, and also includes a power switching assembly electrically connected with the plug-in, the power switching assembly including a push-driven switching member , the switching member can be moved between a first position and a second position under a pressing action to switch the coupling form of the plug-in. The electric energy switching device of the present invention can realize two kinds of voltage switching, so that the electric storage device, the electric tool and the system using the electric energy switching device can match the electric power tool with the electric energy switching device to a variety of power supply devices with different output voltages, thereby effectively increasing the The scope of application of the electric energy storage system/electric tool/electric tool system using the electric energy switching device is reduced, and the cost is reduced.

Description

Power switching member and tools and systems having the same

technical field

The invention relates to an electric energy switching component, a tool and a system having the electric energy switching component, and belongs to the technical field of garden tools.

Background technique

In the garden machinery and power tool industries, power tools usually have a rated working voltage, that is, tools with different rated voltages need battery packs with different rated voltages to provide power. Dual voltage switched battery pack.

In the prior art, the voltage regulation structure of the dual-voltage battery pack is concentrated on the battery pack, and the voltage selection is realized through different external plugs (male plugs), so that the battery pack outputs different voltages.

In the field of large-volume batteries or backpack batteries, the tool and the battery are not directly plugged, but connected by a power cord. At this time, it is inconvenient to achieve different voltage outputs through different male plugs.

In view of this, it is necessary to provide a new power switching device suitable for power switching and tools and systems using the power switching device to solve the above problems.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide an electric energy switching device capable of realizing two voltage switching, an electric storage system using the electric energy switching device, and an electric tool and system.

In order to achieve the above purpose of the invention, the present invention provides a power switching device, which includes a plug-in for connecting to a power supply device, and the plug-in has an output terminal for outputting power to the outside world, and also includes a power switching component that is electrically connected to the plug-in. , the power switching assembly includes a push-driven switching member, the switching member can be moved between a first position and a second position under the action of pushing, so as to switch the coupling form of the plug-in.

As a further improvement of the present invention, the plug-in includes a first plug-in and a second plug-in for connecting the power supply device and an output terminal for connecting the power tool, and when the switching member is in the first position, The two terminals with the same polarity in the first plug-in and the second plug-in are electrically connected through the switching member, and further electrically connected with the terminal with the same polarity in the output end.

As a further improvement of the present invention, the plug-in includes a first plug-in and a second plug-in for connecting the power supply device and an output terminal for connecting the power tool, and when the switching member is in the second position, Two terminals with different polarities in the first plug-in and the second plug-in are electrically connected through the switching member, and the remaining two terminals with different polarities are respectively with the two output terminals with the same polarity. The terminals are electrically connected.

As a further improvement of the present invention, the power switching assembly further includes a housing and a control member accommodated in the housing, the control member is used to control the switching member to move between the first position and the second position, And the control member has an initial position corresponding to the first position and a switching position corresponding to the second position.

As a further improvement of the present invention, the control member includes a return button and a switch button penetrating the housing, and a rotary shaft for returning the return button and the switch button, and the rotary shaft is rotatably fixed at the inside the housing space.

As a further improvement of the present invention, the rotating shaft has a rotating shaft rotatably fixed in the housing and fins extending along the radial direction of the rotating shaft, and the return button and the switch button are located on the rotating shaft. On both sides of the shaft axis direction, the return button and the switch button are respectively provided with abutting grooves corresponding to the fins.

As a further improvement of the present invention, the casing is provided with a switching space for accommodating the control member and the switching member, the casing is further provided with a track/chute structure for slidably accommodating the switching member, and The track/chute structure is accommodated in the switching space.

In order to achieve the above purpose of the invention, the present invention provides an electric energy storage system, which includes a first energy unit and a second energy unit whose output voltages are both nV, and also includes an electric energy switching device for connecting two groups of the energy units, so The electric energy switching device can switch the series-parallel connection of the first energy unit and the second energy unit by pressing, so as to output two different voltages.

As a further improvement of the present invention, both the first energy unit and the second energy unit have positive and negative electrodes for realizing energy output, and the positive and negative electrodes have at least three arrangement structures; the The electrical energy switching device has a switching member in the form of positive and negative electrode coupling for switching the first energy unit and the second energy unit.

As a further improvement of the present invention, the switching member has a first position for connecting the first energy unit and the second energy unit in parallel, and when the switching member is located at the first position, the switching The component realizes the low voltage output of the electrical energy storage system by connecting the electrodes with the same polarity in the first energy unit and the second energy unit respectively.

As a further improvement of the present invention, the switching member has a second position for connecting the first energy unit and the second energy unit in series, and when the switching member is located at the second position, the switching The component realizes the high voltage output of the electrical energy storage system by connecting the two electrodes of the first energy unit and the second energy unit with opposite polarities.

In order to achieve the above object of the invention, the present invention provides an electric power tool, which is characterized in that: the electric power tool uses the aforementioned electric energy switching device, and the electric power tool cooperates with an electric energy storage system through the electric energy switching device to make the electric energy The output voltage output by the storage system can match the rated voltage of the power tool.

In order to achieve the above object of the invention, the present invention provides an electric power tool system, including an electric power tool and an electric energy storage system for providing electric power for the electric power tool, the electric energy storage system is the aforementioned electric energy storage system, and the electric energy storage system has An electric energy switching device, and the electric energy storage system cooperates with the electric power tool through the electric energy switching device, so that one of the two different output voltages output by the electric energy storage system can match the rating of the electric power tool Voltage. ,

The beneficial effects of the present invention are: the electric energy switching device of the present invention is provided with a switching member that can be switched between the first position and the second position and a plug-in electrically connected to the switching member, and by adjusting the coupling form between different plug-ins, The electric energy storage system using the electric energy switching device can realize the output of two different voltages; at the same time, the electric tool with the electric energy switching device can also be matched with a variety of power supply devices with different output voltages, which effectively increases the use of the electric energy switching device. The scope of application of the electrical energy storage system/power tool/power tool system of the device reduces the cost.

Description of drawings

FIG. 1 is a schematic perspective view of an electrical energy storage system of the present invention.

FIG. 2 is a schematic structural diagram of the electrical energy storage system in FIG. 1 omitting the electrical energy switching device and part of the cavity.

FIG. 3 is a schematic perspective view of the power switching device in FIG. 1 .

FIG. 4 is an exploded schematic view of the power switching device in FIG. 1 .

FIG. 5 is an exploded schematic view of the switching member in FIG. 4 .

FIG. 6 is a schematic diagram of the combined structure of the power switching component and the plug-in when the power switching device is in the first position.

FIG. 7 is a schematic diagram of the combined structure when the elastic member is omitted in FIG. 6 .

FIG. 8 is a schematic diagram of the connection structure of the plug-in when the power switching device is in the first position.

FIG. 9 is a circuit structure diagram of the electric energy storage system when the electric energy switching device is in the first position.

FIG. 10 is a schematic diagram of the combined structure of the power switch assembly and the plug-in when the power switch device is in the second position and the elastic member is omitted.

FIG. 11 is a schematic diagram of the connection structure of the plug-in when the power switching device is in the second position.

FIG. 12 is a circuit diagram of the electrical energy storage system when the electrical energy switching device is in the second position.

FIG. 13 is a partial enlarged view of the connecting position of the switching portion and the switching member in FIG. 4 .

FIG. 14 is a schematic structural diagram of the second embodiment of the electrical energy storage system according to the present invention, where the electrical energy switching device and part of the cavity are omitted.

FIG. 15 is a schematic structural diagram of the third embodiment of the electric energy storage system according to the present invention, in which the electric energy switching device and part of the cavity are omitted.

16 is a schematic perspective view of the power tool system of the present invention.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Here, it should also be noted that, in order to avoid obscuring the present invention due to unnecessary details, only structures and/or processing steps closely related to the solution of the present invention are shown in the drawings, and the Invent other details that are less relevant.

In addition, it should be noted that the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device comprising a series of elements includes not only those elements, but also Also included are other elements not expressly listed or inherent to such a process, method, article or apparatus.

Please refer to FIG. 1 and FIG. 2 , which are an electric energy storage system 10 provided by the present invention. The electric energy storage system 10 has a first energy unit (not numbered), a second energy unit (not numbered), and an electric energy output unit for realizing electric energy output. The power switching device 11 .

In the present invention, the voltages of the first energy unit and the second energy unit are both nV, and the first energy unit has a positive electrode 12a and a negative electrode 12b for outputting electrical energy; the second energy unit has a positive electrode 13a for outputting electrical energy , the negative electrode 13b; further, the electrical energy storage system 10 further includes a cavity 14 for housing the first energy unit and the second energy unit, the positive electrodes 12a, 13a and the negative electrodes 12b, 13b are housed in the cavity 14 and exposed It is disposed outside the cavity 14 to be plugged with the power switching device 11, and in the present invention, the positive electrodes 12a, 13a and the negative electrodes 12b, 13b have at least three arrangement structures.

Please refer to FIG. 1 to FIG. 4 , the power switching device 11 is plugged into the cavity 14 and is electrically connected to the first power unit and the second power connection unit through the positive and negative electrodes, and the power switching device 11 has an adjustable The first position and the second position, and when the electric energy switching device 11 switches between the first position and the second position, the series-parallel form of the first energy unit and the second energy unit can be switched, so that the electric energy storage system 10 outputs two different voltages.

The power switching device 11 has a casing 111 , a plug-in 112 accommodated in the casing 111 , and a power switching assembly 113 adjustable and connected to the plug-in 112 . The housing 111 is provided with an accommodation space (not numbered) for accommodating the plug-in 112 and the power switch assembly 113 . The plug-in 112 includes a first plug-in 1121 and a second plug-in 1122 for electrically connecting the first energy unit and the second energy unit, and an output terminal 1123 for realizing electrical energy output, and the first plug-in 1121, the second plug-in 1122 and the output The ends 1123 are connected and installed in the receiving space.

Further, the first plug-in 1121 and the second plug-in 1122 both have positive terminals (1121a, 1122a) and negative terminals (1121b, 1122b), the output terminal 1123 has a positive output 1123a and a negative output 1123b, and the output terminal 1123 and the first plug-in 1121 and the second plug-in 1122 are respectively connected, that is, the positive terminal 1121a in the first plug-in 1121 or the positive terminal 1122a in the second plug-in 1122 is electrically connected with the positive output 1123a in the output terminal 1123, and the negative terminal in the first plug-in 1121 is electrically connected. The terminal 1121b or the negative terminal 1122b in the second plug 1122 is electrically connected to the negative output 1123b in the output terminal 1123, so as to ensure that the power supply device 200 connected to the first plug 1121 and the second plug 1122 completes the power supply through the output terminal 1123. output.

In a preferred embodiment of the present invention, the positive electrodes 12a, 13a, the negative electrodes 12b, 13b, the positive terminals 1121a, 1122a and the negative terminals 1121b, 1122b are arranged in a line and are connected in a one-to-one correspondence, and the polarities Opposite electrodes/terminals are staggered. Further, the output end 1123 is substantially parallel to the first plug-in 1121 and the second plug-in 1122, and is located on two different side walls of the housing 111 to facilitate the connection of the first plug-in 1121, the second plug-in 1122 and the output end 1123.

Referring to FIG. 5 in conjunction with FIG. 4 , the power switching assembly 113 includes a switching member 114 and a control member 115 . In the present invention, the switching member 114 is used to electrically connect the first plug 1121 and the second plug 1122 and can switch the coupling form of the first plug 1121 and the second plug 1122 . Specifically, the switching member 114 is accommodated in the casing 111, and the casing 111 is provided with a track/chute structure (not shown) for accommodating the switching member 114, and the switching member 114 is slidably connected in the track/chute structure and Under the action of the control member 115, it can move between the first position and the second position along the track/chute structure, and further adjust the coupling form of the first insert 1121 and the second insert 1122.

In a preferred embodiment of the present invention, the switching member 114 includes a first switching member 1142 and a second switching member 1143 connected by an elastic member 1141. Further, the first switching member 1142 has a first connecting terminal 1144 and a A protrusion (not numbered) connecting the elastic member 1141, the first connecting terminal 1144 has a first connecting portion 1144a for connecting the first card 1121 and/or the second card 1122 and extending toward the second switching member 1143 for connecting The second connection portion 1144b of the second switching member 1143.

The second switching member 1143 has substantially the same structure as the first switching member 1142 , that is, the second switching member 1143 has a second connecting terminal 1145 and a protrusion (not numbered) disposed toward the first switching member 1142 , and the second connecting The terminal 1145 also has a third connecting portion 1145a for connecting the first card 1121 and/or the second card 1122 and a fourth connecting portion 1145b extending toward the first switching member 1142 for connecting the first switching member 1142 . Preferably, the first connection terminal 1144 and the second connection terminal 1145 are integrally formed, and cover the outer walls of the first switching member 1142 and the second switching member 1143 in an "L" shape, respectively.

Specifically, the elastic member 1141 is connected between the first switching member 1142 and the second switching member 1143 through a protrusion. Referring to FIGS. 6 and 7 , it is defined that when the elastic member 1141 is in a natural extension state, the switching member 114 is in the first position; then when the switching member 114 is in the first position, the first connecting portion 1144a of the first connecting terminal 1144 It is electrically connected to the positive terminals 1121a and 1122a in the first plug-in 1121 and the second plug-in 1122, so that the positive electrodes 12a and 13a in the first energy unit and the second energy unit are electrically connected; the first plug-in 1121 and the second The negative terminals 21b, 22b in the plug-in 1122 are electrically connected through the third connection portion 1145a of the second switching member 1143, so that the negative electrodes 12b, 13b in the first energy unit and the second energy unit are electrically connected; and this At this time, the second connecting portion 1144b and the fourth connecting portion 1145b are arranged separately (as shown in FIG. 3 ).

Further, the positive output 1123a in the output end 1123 is electrically connected to the positive terminal 1121a or the positive terminal 1122a through an electrical connection structure such as a wire; the negative output 1123b is electrically connected to the negative terminal 1121b or the negative terminal 1122b through an electrical connection structure such as a wire connection; so that the first energy unit and the second energy unit are connected in parallel, and the output of low voltage (ie nV) is realized through the output terminal 1123 (as shown in FIG. 8 and FIG. 9 ).

Referring to FIG. 10 in conjunction with FIG. 6 , it is defined that when the elastic member 1141 is in a compressed state under the control of the control member 115 , the switching member 114 is in the second position, then when the switching member 114 is in the second position, the first switching The second connecting portion 1144b in the member 1142 is connected with the fourth connecting portion 1145b in the second switching member 1143, so that the first switching member 1142 and the second switching member 1143 are connected through the second connecting portion 1144b and the fourth connecting portion 1145b As a conductive whole, the two terminals of the first plug-in 1121 and the second plug-in 1122 with opposite polarities and adjacent to each other are electrically connected through the first switching member 1142 and the second switching member 1143, that is, at this time, the first connection part 1144a is separated from the positive terminal 1121a in the first plug-in 1121, the third connection part 1145a is separated from the negative terminal 1122b in the second plug-in 1122, and the adjacent negative terminal 1121b and positive terminal 1122a are connected by the first connection part 1144a, The third connection portion 1145a and the combined electrical connection of the second connection portion 1144b and the fourth connection portion 1145b.

Further, the positive output 1123a in the output end 1123 is electrically connected to the positive terminal 1121a through an electrical connection structure such as a wire; the negative output 1123b is electrically connected to the negative terminal 1122b through an electrical connection structure such as a wire; so that the first energy unit is electrically connected. It is connected in series with the second energy unit, and realizes the output of high voltage (ie 2nV) through the output terminal 1123 (as shown in FIG. 11 and FIG. 12 ).

The control member 115 is used to drive the switching member 114 to move in the track/chute structure, so that the switching member 114 can be switched between the first position and the second position. In the present invention, the control member 115 includes a switch button 116 , a return button 117 , and a rotary shaft 118 for return-connecting the switch button 116 and the return button 117 .

Specifically, the switch button 116 is used to control the switch member 114 to slide between the first position and the second position, and has an initial position corresponding to the first position and a switch position set corresponding to the second position. Further, the switch button 116 includes a push portion and a switch portion 1161 connected to the push portion. The push portion penetrates through the housing 111 to drive the switch portion 1161 to move between the initial position and the switch position under the action of the push.

The switching portion 1161 is formed to extend outward along the extending direction perpendicular to the pressing portion. In the present invention, the switching portion 1161 has two retaining walls 1162 extending toward the switching member 114 and arranged parallel to each other, and the two retaining walls are The spacing between 1162 is less than the length of the switching member 114 in the first position.

When the switch button 116 is in the initial position, the two retaining walls 1162 are located above the switch member 114, and the switch member 114 is in the first position; when the switch button 116 is moved to the switch position under the action of pressing, the switch member 114 is locked Hold between the two retaining walls 1162, the switching member 114 is in the second position.

Please refer to FIG. 13 in conjunction with FIG. 4 , in a preferred embodiment of the present invention, an end portion of each retaining wall 1162 is provided with an inclined guide surface 1163 disposed toward the switching member 114 , and the first switching member is 1142 and the second switch member 1143 are provided with abutting surfaces 1146 corresponding to the inclined guide surfaces 1163; in this way, when the switch button 116 is pressed to move from the initial position to the switch position, the holding wall 1162 can be positioned between the inclined guide surfaces 1163 and 1163. The abutting surface 1146 slides along the inclined guide surface 1163 and the two sidewalls of the first switching member 1142 and the second switching member 1143 away from each other and is clamped on both sides of the switching member 114 in the length direction.

Further, limiting structures 1147 are provided on both side walls of the first switching member 1142 and the second switching member 1143 that are disposed away from each other, and the retaining walls 1162 are provided with positioning structures 1164 corresponding to the limiting structures 1147 . , when the switch button 116 moves to the switch position, the separation of the switch button 116 and the switch member 114 can be effectively prevented, and the stability of the holding of the switch button 116 and the switch member 114 is ensured. Preferably, the limiting structure is a limiting groove, and the positioning structure 1164 is a positioning protrusion corresponding to the limiting groove.

The return button 117 penetrates through the casing 111 to control the switch button 116 to return from the switch position to the initial position through the rotary shaft 118 under the pressing action. Further, the rotary shaft 118 is partially accommodated in the accommodation space of the casing 111, including a positioning shaft rotatably fixed in the casing 111, a first fin extending outward from the radial direction of the positioning shaft and located on the same plane; The second fin, the switch button 116 is provided with a first abutting groove corresponding to the first fin, and the return button 117 is provided with a second abutting groove corresponding to the second fin.

Specifically, when the switch button 116 is in the initial position, the rotary shaft 118 is in a free rotation state, and the return button 117 can move up and down along its extending direction; and at this time, the switch member 114 is in the first position, the first energy unit and The second energy units are connected in parallel, and the electrical energy storage system 10 can realize low voltage output.

When the switch button 116 moves from the initial position to the switch position, the first abutting groove drives the first fin to rotate around the positioning shaft, so that the second fin abuts on the second abutting groove to drive the return button 117 to The toggle button 116 moves in the opposite direction. When the switch button 116 is positioned at the switch position, the switch portion 1161 of the switch button 116 is clamped at both ends of the switch member 114 in the length direction, and the positioning structures 1164 on the wall 1162 and the limit structures on the switch member 114 are clamped They are clamped to each other to define the switching position of the switch button 116 and move the switch member 321 from the first position to the second position; the return button 117 is clamped and positioned between the housing 111 and the end of the second fin, and At this time, the switching member 114 is in the second position, the first energy unit and the second energy unit are connected in series, and the electrical energy storage system 10 can output a high voltage.

Further, when it is necessary to control the switch button 116 to return to the initial position, the return button 117 is pressed, and the return button 117 drives the second fin and the first fin to rotate around the positioning axis through the second abutting groove, and the first The fins drive the switch button 116 to move from the switch position to the initial position, so that the limiting structure and the positioning structure are separated, and the switch portion 1161 is disengaged from the end of the switch member 114, which further makes the switch member 114 return from the second position to the first position , to complete the switching of the coupling state of the first plug-in 1121 and the second plug-in 1122 by the power switching component 113 .

Please refer to FIG. 14 , which is a schematic structural diagram of an electrical energy storage system 10 ′ according to the second embodiment of the present invention. In the present embodiment, the electrical energy storage system 10 ′ has substantially the same structure as the electrical energy storage system 10 , and the only difference lies in the positive electrodes 12 a ′, 13 a ′ and the negative electrodes 12 b in the first energy unit and the second energy unit ', 13b' are arranged up and down.

Please refer to FIG. 15 , which is a schematic structural diagram of an electrical energy storage system 10 ″ according to Embodiment 3 of the present invention. In this embodiment, the electrical energy storage system 10 ″ has substantially the same structure as the electrical energy storage system 10 and the electrical energy storage system 10 ′ , the difference is only that the positive electrodes 12a", 13a" and the negative electrodes 12b", 13b" in the first energy unit and the second energy unit are all along the plugging direction of the electric energy switching device 11, 11' and the energy unit. are arranged, and the negative electrodes 12b", 13b" are parallel to the positive electrodes 12a", 13a".

Further, in the second and third embodiments, the arrangement of the plug-ins 112 in the power switching devices 11 and 11' can be adjusted according to the arrangement of the positive and negative electrodes in the first energy unit and the second energy unit, It only needs to be ensured that the first energy unit and the second energy unit are connected in parallel when the power switching devices 11, 11' are in the first position, and the first energy unit and the second energy unit when the power switching devices 11, 11' are in the second position It is enough to be connected in series, that is, the arrangement form of the plug-ins 112 in the power switching devices 11 and 11 ′ can be adjusted according to the actual situation, which is not limited here.

The present invention also provides a power tool (not shown). The power tool includes a tool body and a power switching device 11 for electrically connecting the tool body and the power supply device.

In the present invention, the tool body has a plug portion for connecting the power switching device 11 , and the two connecting pieces with opposite polarities are respectively the positive output 1123 a and the negative output with the same polarity in the output end 1123 of the power switching device 11 . 1123b is correspondingly connected to ensure the normal input of the working voltage.

In the present invention, the rated voltage of the power tool is nV, then the power tool can be connected to different power supply devices having energy units with an output voltage of n/2V or nV through the power switching device 11 .

Specifically, the power tool can be connected to a dual-voltage power supply device or a single-voltage power supply device having two energy units with an output voltage of n/2V, and in this embodiment, each energy unit with an output voltage of n/2V is have two output electrodes with opposite polarities.

Further, when the power tool is electrically connected to the dual-voltage power supply device/single-voltage power supply device through the power switching device 11, the power switching device 11 passes through the positive terminal 21a, the negative terminal 21b of the first plug-in 1121, and the second plug-in 1122. The positive terminal 1122a and the negative terminal 1122b are respectively electrically connected to the output electrodes of the two energy cells with an output voltage of n/2V. At this time, the switch member 114 can be controlled by the switch button 116 to move to the second position, so that the first plug-in The negative terminal 1121b of the 1121 is electrically connected to the positive terminal 1122a of the second plug-in 1122 through the first switching member 1142 and the second switching member 1143; to control two energy units with an output voltage of n/2V connected in series, the dual voltage The output voltage of the power supply device or the single-voltage power supply device is nV, which meets the rated voltage of the tool body and ensures the normal operation of the power tool.

The power tool can also be connected to a dual-voltage power supply device or a single-voltage power supply device having two energy cells with an output voltage of nV, and each energy cell with an output voltage of nV has two output electrodes with opposite polarities.

Specifically, when the power tool is electrically connected to the dual-voltage power supply device/single-voltage power supply device through the power switching device 11 , the switching member 114 can be controlled to move to the first position through the switching button 116 and/or the return button 117 . , the positive terminal 1121a of the first plug-in 1121 and the positive terminal 1122a of the second plug-in 1122 are electrically connected through the first switching member 1142; the negative terminal 1121b of the first plug-in 1121 and the negative terminal 1122b of the second plug-in 1122 The switching member 1143 is electrically connected; further, two energy units with an output voltage of nV are connected in parallel, and the output voltage of the dual-voltage power supply device or the single-voltage power supply device is controlled to be nV, which meets the rated voltage of the tool body and ensures the normal operation of the power tool. run.

The power tool can also be connected to a single-voltage power supply device having an energy unit with an output voltage of nV, and the energy unit has two output electrodes of opposite polarities.

Specifically, when the power tool is electrically connected to the single-voltage power supply device through the power switching device 11, the switching member 114 can be controlled to move to the second position through the switching button 116. At this time, the positive terminal 1122a in the second plug 1122 passes through The first switching member 1142 and the second switching member 1143 are electrically connected to the negative terminal 1121b of the first plug-in 1121 ; further, the power switching device 11 is arranged side by side and close to the first plug-in 1121 and the second plug-in 1122 with opposite polarities. The two terminals, such as the positive terminal 1122a of the second plug-in 1122 in FIG. 4 and the negative terminal 1121b of the first plug-in 1121 are electrically connected to the output electrode of the energy unit with the output voltage of nV, and the voltage output of nV is performed, Meet the rated voltage of the tool body to ensure the normal operation of the power tool.

Referring to FIG. 16, an electric power tool system 20 provided by the present invention includes an electric energy storage system 10 and an electric power tool 201, wherein the electric power tool 201 is used for performing corresponding work tasks, and the electric energy storage system 10 is used for The electric tool 201 provides corresponding power to ensure the normal operation of the electric tool system 20 .

In the present invention, the power tool 201 has a plug 202 for connecting to the electrical energy storage system 10, and in the present invention, the power tool 201 can be a low-voltage power tool for accepting low-voltage input; For high-voltage power tools that accept high-voltage input.

Further, the power storage system 10 completes the switching of the output voltage through the power switching device 11 disposed thereon, so that the power tool system 20 can match the low-voltage power tool or the high-voltage power tool, which effectively improves the power tool system of the present invention. 20 practicality.

To sum up, the power switching device 11 of the present invention provides a switching member 114 that can switch between the first position and the second position, and a plug-in 112 that is electrically connected to the switching member 114 , and adjusts the power between different plug-ins 112 . The coupling form enables the power storage system 10 using the power switching device 11 to output two different voltages; at the same time, the power tool with the power switching device 11 can also be matched with a variety of power supply devices with different output voltages, effectively The scope of application of the electric energy storage system 10/electric tool/electric tool system 20 using the electric energy switching device 11 is increased, and the cost is reduced.

The above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced. Without departing from the spirit and scope of the technical solutions of the present invention.

Claims (13)

1. A power switching device, comprising a plug-in for connecting a power supply device and the plug-in having an output terminal for outputting power to the outside world, characterized in that it also includes a power switching component electrically connected to the plug-in, the power switching The assembly includes a push-actuated switching member movable between a first position and a second position under push action to switch the coupling form of the insert. 2 . The power switching device according to claim 1 , wherein the plug-in includes a first plug-in and a second plug-in for connecting to the power supply device and an output terminal for connecting the power tool, and when 2 . When the switching member is in the first position, the two terminals with the same polarity in the first plug-in and the second plug-in are electrically connected through the switching member, and further have the same polarity as the output terminal. terminals are electrically connected. 3 . The power switching device according to claim 1 , wherein the plug-in includes a first plug-in and a second plug-in for connecting to the power supply device and an output terminal for connecting to the electric tool. 3 . When the switching member is located at the second position, two terminals with different polarities in the first plug-in and the second plug-in are electrically connected through the switching member, and the remaining two terminals with different polarities are respectively connected with the Two terminals with the same polarity in the output end are electrically connected. 4 . The power switching device according to claim 1 , wherein the power switching assembly further comprises a casing and a control member accommodated in the casing, the control member is used to control the switching member to be in the first position. 5 . The control member moves between a first position and a second position, and the control member has an initial position set corresponding to the first position and a switching position set corresponding to the second position. 5. The electric energy switching device according to claim 4, wherein the control member comprises a return button penetrating the casing, a switch button, and a rotary shaft for returnly connecting the return button and the switch button , and the rotating shaft is rotatably fixed in the accommodating space of the casing. 6 . The electric energy switching device according to claim 5 , wherein the rotating shaft has a rotating shaft rotatably fixed in the casing and fins extending along the radial direction of the rotating shaft, and the restoring The button and the switch button are located on both sides of the axis of the rotating shaft, and the return button and the switch button are respectively provided with abutting grooves corresponding to the fins. 7 . The power switching device according to claim 4 , wherein the casing is provided with a switching space for accommodating the control member and the switching member, and the casing is further provided with a sliding space for accommodating the control member and the switching member. 8 . The track/chute structure of the switching member, and the track/chute structure is accommodated in the switching space. 8. An electrical energy storage system, comprising a first energy unit and a second energy unit with an output voltage of nV, characterized in that: further comprising an electrical energy switching device for connecting two groups of the energy units, the electrical energy switching device The series-parallel connection of the first energy unit and the second energy unit can be switched by pressing to output two different voltages. 9 . The electrical energy storage system according to claim 8 , wherein the first energy unit and the second energy unit both have positive and negative electrodes for realizing energy output, and the positive and negative electrodes There are at least three arrangement structures; the electric energy switching device has a switching member in the form of positive and negative electrode coupling for switching the first energy unit and the second energy unit. 10. The electrical energy storage system of claim 9, wherein the switching member has a first position for connecting the first energy unit and the second energy unit in parallel, when the switching member is located at In the first position, the switching member realizes the low voltage output of the electric energy storage system by connecting the electrodes with the same polarity in the first energy unit and the second energy unit respectively. 11. The electrical energy storage system of claim 9, wherein the switching member has a second position for connecting the first energy unit and the second energy unit in series, when the switching member is in the In the second position, the switching member realizes the output of the high voltage of the electrical energy storage system by connecting two electrodes of the first energy unit and the second energy unit with opposite polarities. 12. An electric power tool, characterized in that: the electric power tool uses the electric energy switching device according to any one of claims 1-7, and the electric power tool cooperates with the electric energy storage system through the electric energy switching device to make the electric energy storage system. The output voltage of the electrical energy storage system can match the rated voltage of the power tool. 13 . An electric power tool system, comprising an electric power tool and an electric energy storage system for providing electric power for the electric power tool, wherein the electric energy storage system is the electric energy storage system according to any one of claims 8 to 11 , the electric energy storage system has an electric energy switching device, and the electric energy storage system cooperates with the electric tool through the electric energy switching device, so that one of the two different output voltages output by the electric energy storage system can be Match the rated voltage of the power tool.

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