CN111243879A

CN111243879A - Electric energy switching assembly and tool and system with same

Info

Publication number: CN111243879A
Application number: CN202010186739.1A
Authority: CN
Inventors: 陆春桃; 郭新忠; 严安
Original assignee: Changzhou Globe Co Ltd
Current assignee: Changzhou Globe Co Ltd
Priority date: 2020-03-17
Filing date: 2020-03-17
Publication date: 2020-06-05

Abstract

The invention provides an electric energy switching assembly, and a tool and a system with the electric energy switching assembly. The electric energy switching device comprises a plug-in unit used for being connected with a power supply device, an output end used for outputting electric energy to the outside of the plug-in unit, and an electric energy switching assembly electrically connected with the plug-in unit, wherein the electric energy switching assembly is provided with a switching member used for being connected with different plug-in units, and the switching member can rotate between a first position and a second position so as to switch different coupling forms between the plug-in units by changing the abutting position of the switching member. The electric energy switching device can realize the switching of two voltages, so that the electric storage device, the electric tool and the system using the electric energy switching device enable the electric tool with the electric energy switching device to be matched with various power supply devices with different output voltages, the application range of the electric energy storage system/the electric tool system using the electric energy switching device is effectively enlarged, and the cost is reduced.

Description

Electric energy switching assembly and tool and system with same

Technical Field

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

Background

In the garden machinery and power tool industries, an electric tool usually has a rated working voltage, that is, tools with different rated voltages need battery packs with different rated voltages to provide power.

In the prior art, voltage regulation structures for double-voltage battery packs are all concentrated on the battery packs, and voltage selection is realized through different external plugs (male plugs), so that the battery packs output different voltages.

In the field of batteries with larger volume or backpack batteries, the tool is not directly inserted into the batteries but is connected with the batteries through a power line, and different voltage outputs are inconvenient to realize through different male plugs.

Therefore, there is a need to provide a new power switching device suitable for switching power, and a tool and a system using the same, so as to solve the above problems.

Disclosure of Invention

The invention aims to provide an electric energy switching device capable of realizing switching of two voltages, and an electric storage power tool and an electric storage power system using the electric energy switching device.

In order to achieve the above object, the present invention provides an electric energy switching device, including a plug-in unit for connecting a power supply device, the plug-in unit having an output end for outputting electric energy to the outside, and an electric energy switching assembly electrically connected to the plug-in unit, the electric energy switching assembly having a switching member for connecting different plug-in units, the switching member being rotatable between a first position and a second position to switch a coupling form between different plug-in units by changing an abutting position of the switching member.

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

As a further improvement of the present invention, the electric power switching assembly further includes an intermediate connecting member for connecting the switching member and the plug-in unit, and the switching member is rotatably connected to the intermediate connecting member.

As a further improvement of the present invention, the control member is a rocker member disposed in a rocker switch structure, and includes a switch button disposed on the housing, a trigger portion disposed corresponding to the switch button, and a driving portion abutted against the switch member, the trigger portion is rotatably positioned in the housing through a rotating shaft, a rotating shaft axis of the trigger portion and a rotating shaft axis of the switch member are located in a same plane or two planes parallel to each other, and a plane where the switch member is located intersects a plane where the intermediate connection member is located.

As a further improvement of the present invention, the control member includes a switch button disposed on the housing and a trigger portion disposed corresponding to the switch button, the switch member is provided with two, the two switch members are symmetrically disposed on two sides of the trigger portion, and a plane on which the two switch members are disposed is parallel to a plane on which the intermediate connecting member is disposed.

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, when the switching member is located at the first position, two terminals of the first plug-in and the second plug-in having the same polarity are electrically connected through the switching member and further electrically connected with a terminal of the output terminal having the same polarity.

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, when the switching member is located at the second position, two terminals of the first plug-in and the second plug-in having different polarities are electrically connected through the switching member, and the remaining two terminals having different polarities are electrically connected to two terminals having the same polarity in the output terminal, respectively.

In order to achieve the above object, the present invention provides an electric energy storage system, which includes a first energy unit and a second energy unit having output voltages nV, and further includes an electric energy switching device for connecting the two sets of energy units, wherein the electric energy switching device can have a first position and a second position switched by rotation, and the electric energy switching device can switch a series-parallel connection form of the first energy unit and the second energy unit by changing the positions to output two different voltages.

As a further improvement of the present invention, the first energy unit and the second energy unit are both provided with a positive electrode and a negative electrode for realizing energy output, and the positive electrode and the negative electrode have at least 3 arrangements; the electric energy switching device has a switching means for switching the positive and negative electrode coupling forms of 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 member realizes the output of the low voltage of the electric energy storage system by connecting the electrodes of the same polarity in the first energy unit and the second energy unit, respectively.

As a further improvement of the 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 in the second position, the switching member enables an output of a high voltage of the electrical energy storage system by connecting two electrodes of the first energy unit and the second energy unit, which have opposite polarities.

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

To achieve the above object, the present invention provides an electric power tool system including an electric power tool and an electric energy storage system for supplying electric power to the electric power tool, characterized in that: the electric energy storage system is the electric energy storage system, the electric energy storage system is provided with an electric energy switching device, and the electric energy storage system is matched with the electric tool through the electric energy switching device, so that one of two different output voltages output by the electric energy storage system can be matched with the rated voltage of the electric tool.

The invention has the beneficial effects that: the electric energy switching device is provided with the switching component capable of switching between the first position and the second position and the plug-in electrically connected with the switching component, and the electric energy storage system using the electric energy switching device can realize the output of two different voltages by adjusting the coupling form between different plug-ins; meanwhile, the electric tool with the electric energy switching device can be matched with various power supply devices with different output voltages, the application range of an electric energy storage system/an electric tool system using the electric energy switching device is effectively enlarged, and the cost is reduced.

Drawings

Fig. 1 is a schematic perspective view of an electric energy storage system according to a first embodiment of the invention.

Fig. 2 is a schematic structural diagram of the electric energy storage system in fig. 1, with the electric energy switching device and a part of the cavity omitted.

FIG. 3 is a schematic perspective view of the electric energy switching apparatus shown in FIG. 1 at another angle

Fig. 4 is an exploded view of the power switching device shown in fig. 3.

Fig. 5 is a schematic structural diagram of the power switching module and the plug-in unit in fig. 4.

Fig. 6 is a schematic structural view of the power switching module and the plug-in unit of fig. 5 at another angle.

Fig. 7 is a schematic structural diagram of the combined power switching module, plug-in and energy unit in fig. 5.

Fig. 8 is a schematic perspective view of a second embodiment of an electrical energy storage system according to the present invention.

FIG. 9 is a perspective view of the electric energy switching device of FIG. 8 from another angle

Fig. 10 is an exploded view of the power switching device of fig. 9.

Fig. 11 is a schematic structural diagram of the power switching module and the plug-in unit in fig. 10.

Fig. 12 is a schematic structural diagram of the combined power switching module, plug-in and energy unit in fig. 10.

Fig. 13 is a circuit diagram of the electrical energy storage system when the electrical energy switching apparatus of fig. 9 is in the initial position.

Fig. 14 is a circuit diagram of the electrical energy storage system when the electrical energy switching apparatus of fig. 9 is in the first position.

Fig. 15 is a circuit diagram of the electrical energy storage system when the electrical energy switching apparatus of fig. 9 is in the second position.

Fig. 16 is a schematic structural diagram of an electric energy switching device and a part of the cavity in the electrical energy storage system according to an embodiment of the present invention.

Fig. 17 is a schematic structural diagram of the electric energy storage system according to the fourth embodiment of the present invention, in which the electric energy switching device and a part of the cavity are omitted.

Fig. 18 is a perspective view of the power tool system of the present invention.

Detailed Description

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

It should be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and/or processing steps closely related to the aspects of the present invention are shown in the drawings, and other details not closely related to the present invention are omitted.

In addition, it is also to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Referring to fig. 1 and fig. 2, an electrical energy storage system according to an embodiment of the present invention includes a first energy unit (not numbered), a second energy unit (not numbered), and an electrical energy switching device 11 for outputting electrical energy.

In the invention, the voltage of the first energy unit and the second energy unit is nV, and the first energy unit is provided with a positive electrode 12a and a negative electrode 12b for outputting electric energy; the second energy unit has a positive electrode 13a and a negative electrode 13b for outputting electric energy; further, the electric energy storage system further includes a cavity 14 for accommodating the first energy unit and the second energy unit, the

positive electrodes

12a, 13a and the

negative electrodes

12b, 13b are accommodated in the cavity 14 and exposed to the outside of the cavity 14 to be inserted into the electric energy switching device 11, and in the present invention, the

positive electrodes

12a, 13a and the

negative electrodes

12b, 13b have at least 3 arrangements. Referring to fig. 1 to 6, the electric energy switching device 11 is inserted into the cavity 14 and electrically connected to the first energy unit and the second energy unit through the positive electrode and the negative electrode, and the electric energy switching device 11 has a first position and a second position, and when the electric energy switching device 11 is switched between the first position and the second position, the series-parallel connection mode of the first energy unit and the second energy unit can be switched, so that the electric energy storage system outputs two different voltages.

Referring to fig. 3 to 7, in the present invention, the power switching device 11 includes a housing 111, a plug 112 accommodated in the housing 111, and a power switching assembly 113 adjustably connected to the plug 112.

Further, the housing 111 is provided with an accommodation space (not numbered) for accommodating the plug 112 and the power switching assembly 113. The plug 112 includes a first plug 1121 and a second plug 1122 for electrically connecting the first energy unit and the second energy unit, and an output end 1123 for outputting electric energy, and the first plug 1121, the second plug 1122, and the output end 1123 are all connected and installed in the accommodating space.

Specifically, each of the first and

second inserts

1121, 1122 has a positive terminal (1121a, 1122a) and a negative terminal (1121b, 1122b), the output terminal 1123 has a positive output 1123a and a negative output 1123b, and the output terminal 1123 is connected to the first and

second inserts

1121, 1122, respectively, that is, the positive terminal 1121a of the first insert 1121 or the positive terminal 1122a of the second insert 1122 is electrically connected to the positive output 1123a of the output terminal 1123, and the negative terminal 1121b of the first insert 1121 or the negative terminal 1122b of the second insert 1122 is electrically connected to the negative output 1123b of the output terminal 1123, so as to ensure that the power supply device 200 connected to the first and

second inserts

1121, 1122 completes the output of electric energy through the output terminal 1123.

In a preferred embodiment of the present invention, the positive/

negative terminals

1121a, 1122a, 1121b, and 1122b of the first and

second inserts

1121, 1122 are male insertion pieces arranged in a sheet shape, and the end of each male insertion piece is located on the same straight line, and two terminals with the same polarity in the first and

second inserts

1121, 1122 are arranged side by side; furthermore, the output end 1123 is a female terminal disposed substantially parallel to the first plug-in 1121 and the second plug-in 1122, and the output end 1123 is two sidewalls disposed on the housing 111 different from the first plug-in 1121 and the second plug-in 1122; so as to facilitate the connection of the first plug-in 1121, the second plug-in 1122 and the output terminal 1123.

Of course, in other embodiments of the present invention, the

positive terminals

1121a, 1122a and the

negative terminals

1121b, 1122b of the first and

second inserts

1121, 1122 may also be arranged back and forth or up and down, and the like, which are different from the straight line arrangement, and the arrangement shapes of the first and

second inserts

1121, 1122 and the output end 1123 may be adjusted according to the specific structure of the power switching module 113; that is, in the present invention, the arrangement and arrangement of the first plug-in 1121, the second plug-in 1122 and the output end 1123 can be selected according to actual requirements.

The power switching assembly 113 includes a switching member 114 and a control member 115. The switching means 114 is used for electrically connecting the first and

second plugs

1121 and 1122 and can switch the coupling form of the first and

second plugs

1121 and 1122. Specifically, the switching member 114 is housed in the housing 111, and the switching member 114 is rotatably housed in the housing 111 by the rotating shaft 1141, and is rotatable about the rotating shaft 1141 and swingable between a first position and a second position by the control member 115 to further adjust the coupling form of the first plug 1121 and the second plug 1122.

In the present invention, the power switching assembly 113 further includes an intermediate connection member 116 for connecting the switching member 114 and the first plug-in 1121, the second plug-in 1122 and the output terminal 1123, and the switching member 114 is rotatably connected to the intermediate connection member 116 through a rotation shaft 1141, in the present invention, the intermediate connection member 116 has a plurality of intermediate connection plates for connecting the first plug-in 1121, the second plug-in 1122 and/or the output terminal 1123, and each of the intermediate connection plates is a metal intermediate connection member made of a conductive metal material, and the switching member 114 is electrically connected to the first plug-in 1121, the second plug-in 1122 and the output terminal 1123 through the metal intermediate connection members, so as to realize power transmission of the power switching device 11.

In a preferred embodiment of the present invention, the switching member 114 is a plate with a certain curvature, which may be a warped plate or an arc plate, so that the plane of the switching member 114 intersects the plane of the intermediate connecting member 116. In the present embodiment, the electric energy switching assembly 113 controls the switching member 114 to rotate around the rotating shaft 1141, and two ends of the switching member 114 abut against the middle connecting member 116 and/or the combination of the first plug 1121 and the second plug 1122 to complete the switching of the coupling form of the first plug 1121 and the second plug 1122, further, the end of the switching member 114 is provided with a protrusion 1142 for improving the electrical contact performance, and the protrusion 1142 is respectively disposed on the

positive terminals

1121a, 1122a, and the

negative terminals

1121b, 1122b of the first plug 1121 and the second plug 1122.

Preferably, the switching member 114 includes a first switching member 1143 and a second switching member 1144 which are parallel and juxtaposed, wherein the first switching member 1143 and the second switching member 1144 are fixedly connected by an arc-shaped connecting portion (not numbered), so that the switching member 114 is substantially in an "H" shape, and further, the protrusions 1142 are provided in a plurality and respectively located at the end of each switching member 114, and the protrusions 1142 located on the same switching member 114 are symmetrically arranged with respect to the axial direction of the rotation shaft 1141.

The control member 115 can rotate in the housing 111 to drive the switching member 114 to move between the first position and the second position, in the present invention, the control member 115 is a rocker member disposed corresponding to the switching member 114 and having a rocker switch structure, and includes a switching button 117 disposed on the housing 111, a triggering portion 118 disposed corresponding to the switching button 117, and a driving portion 119 abutting against the switching member 114. The switch button 117 is disposed on the housing 111 in a pressing manner, the trigger 118 is rotatably fixed in the accommodating space of the housing 111 through a rotating shaft 1181 and is located below the switch button 117, so that the switch button 117 drives the trigger 118 to rotate around the rotating shaft 1181, and further, an axis of the rotating shaft 1181 of the trigger 118 and an axis of the rotating shaft 1141 of the switch member 114 are located in the same plane or two planes parallel to each other.

Further, one end of the driving portion 119 abuts against the switching member 114, the other end is connected to the triggering portion 118, and the end of the driving portion 119 abutting against the switching member 114 is disposed in an arc shape, so as to ensure that the driving portion 119 can tightly abut against the arc-shaped connecting portion of the switching member 114 and drive the switching member 114 to rotate.

Preferably, the triggering portion 118 has a receiving hole (not shown) for receiving the driving portion 119, and an elastic element (not shown) for elastically connecting the triggering portion 118 and the driving portion 119 is disposed between the triggering portion 118 and the driving portion 119, so that when the control member 115 abuts against the switching member 114, the driving portion 119 abuts against the switching member 114 along a side away from the triggering portion 118 under the action of the elastic element, so that the end portion/protrusion 1142 of the switching member 114 tightly abuts against the plug 112/the intermediate connecting member 116 in a process of driving the switching member 114 to rotate by the control member 115, thereby ensuring stability of power transmission of the power switching device 11.

Specifically, the control member 115 has an initial position and a switching position provided corresponding to a first position and a second position, and the switching position when the control member 115 controls the switching member 114 to be the first switching position and the switching position when the control member 115 is in the second position to be the second switching position is defined.

When the switch button 117 is in the initial position, the driving portion 119 abuts against the central axis of the switch member 114, so that the switch member 114 is not deflected and the switch member 114 is not in contact with the plug 112; the

positive electrodes

12a, 13a and the

negative electrodes

12b, 13b of the first and second energy units connected to the plug 112 are in an open circuit state, and the electric energy storage system cannot transmit electric energy to the outside.

Referring to fig. 7 in combination with fig. 5 and 6, when the switching member 114 rotates to the first switching position under the abutting action of the control member 115, the first protrusion 1142a of the first switching member 1143 abuts against the intermediate connection member 116a, the first protrusion 1144b of the second switching member 1144 abuts against the intermediate connection member 116d, and further, the intermediate connection member 116a and the intermediate connection member 116d are electrically connected to the intermediate connection member 116c and the intermediate connection member 116b respectively under the abutting action of the switching member 114, so that the positive terminal 1121a of the first plug-in component 1121 is electrically connected to the positive terminal 1122a of the second plug-in component 1122, and the negative terminal 1121b of the first plug-in component 1121 is electrically connected to the negative terminal 1122b of the second plug-in component 1122.

Further, the positive output 1123a of the output port 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; so that the first energy unit and the second energy unit are connected in parallel and output of a low voltage (i.e., nV) is achieved through the output terminal 1123.

When the switching member 114 rotates to the second switching position under the abutting action of the control member 115, the second protrusion 1142c of the first switching member 1143 and the second protrusion 1144d of the second switching member 1144 abut against the intermediate connection member 116e, and further, the positive terminal 1122a of the second plug 1122 and the negative terminal 1121b of the first plug 1121 are electrically connected through the intermediate connection member 116b and the intermediate connection member 116 c.

Further, the positive output 1123a of the output port 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 via an electrical connection structure such as a wire; such that the first energy unit and the second energy unit are connected in series and output of a high voltage (i.e., 2nV) is achieved through the output terminal 1123.

Referring to fig. 8 in combination with fig. 2, in the electric energy storage system according to the second embodiment of the present invention, in the present embodiment, the electric energy storage system has the same first energy unit and the same second energy unit, and the difference mainly lies in the structure and the form of the electric energy switching device 12.

Referring to fig. 9 to 11, in the present embodiment, the power switching device 12 includes a housing 121, a plug 122 accommodated in the housing 121, and a power switching assembly 123 adjustably connected to the plug 122. Further, the housing 121 is provided with an accommodating space (not numbered) for accommodating the plug 122 and the power switching assembly 123. The plug 122 includes a first plug 1221 and a second plug 1222 for electrically connecting the first energy unit and the second energy unit, and an output terminal 1223 for outputting electric energy, and the first plug 1221, the second plug 1222, and the output terminal 1223 are all connected and installed in the receiving space.

The power switching assembly 123 includes a control member 124 and a switching member 125. The control member 124 includes a switching button 126 provided on the trigger 121 provided corresponding to the housing button 126, an intermediate connecting member 129 provided corresponding to the switching portion 128 and the trigger portion 128. In the present embodiment, the switch button 126 and the trigger 128 are integrally formed, the switch button 126 partially penetrates through the housing 121 and is clamped in the receiving space through the trigger 128, further, the trigger 128 is provided with a position-limiting post 1281 protruding along the extending direction of the switch button 126, the housing 121 is provided with a supporting post (not shown) corresponding to the position-limiting post 1281, when the switch button 126 is rotated, the switch button 126 can be limited at a fixed position under the action of the position-limiting post 1281 and the supporting post, so as to prevent the switch member 125 connected to the control member 124 from freely swinging between the first position and the second position.

The intermediate connecting member 129 is provided with connecting holes (not numbered) which are disposed in a staggered manner, and in the present embodiment, the intermediate connecting member 129 is an insulating intermediate connecting member made of an insulating material. Further, the

positive terminals

1221a, 1222a and the

negative terminals

1221b, 1222b of the first and second inserts 1221, 1222 each have a connection portion (not numbered) disposed corresponding to the connection hole, the connection portions of the positive and

negative terminals

1221a, 1222b of the first and second inserts 1221, 1222b are exposed to the surface of the intermediate connection member 129 near the surface of the trigger portion 128 through the connection hole, and the positive and

negative terminals

1221a, 1221b of the first insert 1221, the positive and

negative terminals

1222a, 1222b of the first insert 1222 are disposed on both sides of the intermediate connection member 129, respectively.

The switching member 125 is disposed at one end of the trigger 128 near the intermediate connecting member 129, and is driven by the switching button 126 to rotate around the trigger 128 to switch between a first position and a second position. Further, the switching member 125 has a first switching member 1251 and a second switching member 1252 which are provided symmetrically and separately on both sides of the trigger portion 128; also in the present embodiment, each of the switching members 125 has a

first end

1253a, 1253b and a

second end

1253c, 1253d formed by the

first end

1253a, 1253b extending outward, and the distance between the two

first ends

1253a, 1253b is smaller than the distance between the two

second ends

1253c, 1253d, so that a substantially Y-shaped gap is formed between the first switching member 1251 and the second switching member 1252.

In the present embodiment, the switching member 125 also has an initial position, a first switching position provided corresponding to the first position, and a second switching position provided corresponding to the second position. Referring to fig. 12 and 13, when the switching member 125 is at the initial position, the switching member 125 does not contact the connection portions of the

positive terminals

1221a, 1222a and the

negative terminals

1221b, 1222b of the first plug-in 1221 and the first plug-in 1222; the

positive electrodes

12a, 13a and the

negative electrodes

12b, 13b of the first and second energy units connected to the insert 122 are in an open circuit state, and the electric energy storage system cannot transmit electric energy to the outside.

Referring to fig. 12 and 14, when the switching member 125 is rotated to the first switching position by the control member 124, the first end 1253a and the second end 1253c of the first switching member 1251 are connected to the positive terminal 1221a of the first card 1221 and the positive terminal 1222a of the second card 1222, respectively, through the connecting portions; the first end 1253b and the second end 1253d of the second switching member 1252 are connected to the negative terminal 1222b of the first card 1221 and the negative terminal 1222b of the first card 1222, respectively, through connecting portions.

Further, the positive output 1223a of the output end 1223 is electrically connected to the positive terminal 1221a or the positive terminal 1222a through an electrical connection structure such as a wire; the negative output 1223b is electrically connected to the negative terminal 1221b or the negative terminal 1222b by an electrical connection structure such as a wire; so that the first energy unit and the second energy unit are connected in parallel and output of a low voltage (i.e., nV) is achieved through the output terminal 1223.

Referring to fig. 12 and 15, when the switching member 125 is rotated to the second switching position by the control member 124, the first end 1253b and the second end 1253d of the second switching member 1252 are connected to the negative terminal 1222b of the first card 1221 and the 1222a of the second card 1222 by connecting portions, respectively; at least one of the first end 1253a and the second end 1253c of the first switching member 1251 rotates along the plane of the intermediate connecting member 129 without contacting the connecting portion on the intermediate connecting member 129.

Further, the positive output 1223a of the output end 1223 is electrically connected to the positive terminal 1221a through an electrical connection structure such as a wire; the negative output 1223b is electrically connected to the negative terminal 1222b through an electrical connection structure such as a wire; such that the first energy unit and the second energy unit are connected in series and output of a high voltage (i.e., 2nV) is achieved through the output terminal 1223.

Fig. 16 is a schematic structural diagram of an electric energy storage system according to a third embodiment of the present invention. In the present embodiment, the electric energy storage system has substantially the same structure as the electric energy storage system in the first embodiment, and the difference is only that: the positive electrodes 12a ', 13 a' and the negative electrodes 12b ', 13 b' of the first energy unit and the second energy unit, and the

positive terminals

1121a, 1122a and the

negative terminals

1121b, 1122b of the electric energy switching device 11 are arranged in an up-down manner.

Fig. 17 is a schematic structural diagram of an electric energy storage system according to a fourth embodiment of the present invention. In the present embodiment, the electric energy storage system has substantially the same structure as the electric energy storage system in the first and second embodiments, and the difference is only that: the positive electrodes 12a ", 13 a" and negative electrodes 12b ", 13 b" and

positive terminals

1121a, 1122a and

negative terminals

1121b, 1122b of the first and second energy units are arranged in a front-to-back arrangement.

The present invention also provides an electric power tool (not shown). The electric power tool includes a tool body and an electric 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, the plug portion has two connecting pieces with opposite polarities, and the two connecting pieces with opposite polarities are respectively connected with the positive output 23a and the negative output 23b with the same polarity in the output terminal 1123 of the power switching device 11, so as to ensure the normal input of the working voltage.

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

Specifically, the power tool may 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 n/2V, and in the present embodiment, each energy cell with an output voltage of n/2V has two output electrodes with opposite polarities.

Further, when the electric power tool is electrically connected to the dual voltage power supply/single voltage power supply through the electric power switching device 11, the electric power switching device 11 is electrically connected to the output electrodes of the two energy units with output voltage of n/2V through the positive terminal 1121a and the negative terminal 1121b of the first plug 1121 and the positive terminal 1122a and the negative terminal 1122b of the second plug 1122, respectively, and at this time, the control member 115 can control the switching member 114 to move to the second position, so that the negative terminal 1121b of the first plug 1121 is electrically connected to the positive terminal 1122a of the second plug 1122 through the switching member 114; the two energy units with the output voltage of n/2V are controlled to be connected in series, the voltage output by the double-voltage power supply device or the single-voltage power supply device is nV, the rated voltage of the tool main body is met, and the normal operation of the electric tool is ensured.

The power tool can also be connected with a double-voltage power supply device or a single-voltage power supply device which has two energy units with the output voltage nV, and each energy unit with the output voltage nV has two output electrodes with opposite polarities.

Specifically, when the electric power tool is electrically connected to the dual voltage power feeding device/single voltage power feeding device through the electric power switching device 11, the control member 115 controls the switching member 114 to move to the first position, and at this time, the positive electrode terminal 1121a of the first plug 1121 is electrically connected to the positive electrode terminal 1122a of the second plug 1122 through the switching member 114; the negative terminal 1121b of the first plug 1121 is electrically connected to the negative terminal 1122b of the second plug 1122 via the switching member 114/the intermediate connecting member 116; further, the electric energy switching device 11 is electrically connected to the output electrodes of the two energy units with output voltage nV through the positive terminal 1121a and the negative terminal 1121b of the first plug-in component 1121 and the positive terminal 1122a and the negative terminal 1122b of the second plug-in component 1122, so that the two energy units with output voltage nV are connected in parallel, the voltage output by the dual voltage power supply device or the single voltage power supply device is controlled to be nV, the rated voltage of the tool body is met, and the normal operation of the electric tool is ensured.

The power tool can also be connected to a single-voltage supply with an energy cell having an output voltage nV and two output electrodes of opposite polarity.

Specifically, when the power tool is electrically connected to the single voltage power supply device through the power switching device 11, the switching button 117 controls the switching member 114 to move to the second position, and at this time, the positive terminal 1122a of the second plug-in 1122 is electrically connected to the negative terminal 1121b of the first plug-in 1121 through the switching member 114; further, the electric energy switching device 11 is electrically connected to the output electrode of the energy unit with the output voltage of nV through two terminals of the first plug-in component 1121 and the second plug-in component 1122, such as the positive terminal 1122a of the second plug-in component 1122 and the negative terminal 1121b of the first plug-in component 1121, which have opposite polarities and are arranged side by side and close to each other, and outputs the voltage of nV, so as to satisfy the rated voltage of the tool body and ensure the normal operation of the electric tool.

Referring to fig. 18, an electric tool system 20 provided by the present invention includes an electric energy storage system and an electric tool 201, wherein the electric tool 201 is used for performing corresponding work tasks, and the electric energy storage system is used for providing corresponding electric power to the electric tool 201 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 an electric energy storage system, and in the present invention, the power tool 201 may be a low-voltage power tool for receiving a low-voltage input; or a high voltage electric tool for receiving a high voltage input.

Further, the electric energy storage system completes the switching of the output voltage through the electric energy switching device 11 arranged on the electric energy storage system, so that the electric tool system 20 can be matched with a low-voltage electric tool or a high-voltage electric tool, and the practicability of the electric tool system 20 is effectively improved.

It should be noted that, in the process of explaining the structure of the electric tool and the electric tool system 20 in the present specification, the electric energy switching device 11 includes both the electric energy switching device 11 and the electric energy switching device 12 as described above, and also includes all the electric energy switching devices without departing from the spirit and scope of the present invention, that is, for convenience of description, the electric energy switching device 11 is merely taken as an example to illustrate the structure of the electric tool and the electric tool system 20, but should not be taken as a limitation.

In summary, in the electric

energy switching devices

11 and 12 of the present invention, the switching

members

114 and 125 capable of switching between the first position and the second position and the plug-

ins

112 and 122 electrically connected to the switching

members

114 and 125 are arranged, and the coupling form between the different plug-

ins

112 and 122 is adjusted, so that the electric energy storage system using the electric

energy switching devices

11 and 12 can output two different voltages; meanwhile, the electric tool with the electric

energy switching devices

11 and 12 can be matched with various power supply devices with different output voltages, so that the application range of the electric energy storage system/electric tool system 20 using the electric

energy switching devices

11 and 12 is effectively enlarged, and the cost is reduced.

Although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the present invention.

Claims

1. An electric energy switching device, includes the plug-in components that are used for connecting power supply unit, just the plug-in components have to the external output that carries out electric energy output, its characterized in that: the power switching assembly is electrically connected with the plug-in units and provided with switching members used for connecting different plug-in units, and the switching members can rotate between a first position and a second position so as to switch the coupling form between different plug-in units by changing the abutting positions of the switching members.

2. The electrical energy switching apparatus of claim 1, wherein: the electric energy switching device is provided with a shell, the electric energy switching assembly is provided with a control component accommodated in the shell, the control component can rotate in the shell to drive the switching component to move between a first position and a second position, and the control component is provided with an initial position and a switching position corresponding to the first position and the second position.

3. The electrical energy switching apparatus of claim 2, wherein: the electrical energy switching assembly further comprises an intermediate connecting member for connecting the switching member and the insert, and the switching member is rotatably connected to the intermediate connecting member.

4. The electrical energy switching apparatus of claim 3, wherein: the control member is the wane component that is wane switch structure setting, including setting up switching button on the casing, with the trigger part that the switching button corresponds the setting and support and hold the drive division on the switching member, the trigger part passes through the rotation axis and rotates the location in the casing, the axis of rotation of trigger part with the rotation axis of switching member is located same or two planes that are parallel to each other, just the switching member place the plane with the plane that intermediate junction component place is crossing.

5. The electrical energy switching apparatus of claim 3, wherein: the control component comprises a switching button arranged on the shell and a triggering part arranged corresponding to the switching button, the number of the switching components is two, the two switching components are symmetrically arranged on two sides of the triggering part, and the plane where the two switching components are located is parallel to the plane where the middle connecting component is located.

6. The electrical energy switching apparatus of claim 1, wherein: the plug-in unit comprises a first plug-in unit and a second plug-in unit which are used for connecting the power supply device and an output end which is used for connecting the power tool, when the switching member is located at the first position, two terminals with the same polarity in the first plug-in unit and the second plug-in unit are electrically connected through the switching member and further electrically connected with terminals with the same polarity in the output end.

7. The electrical energy switching apparatus of claim 1, wherein: the plug-in unit comprises a first plug-in unit and a second plug-in unit which are used for connecting the power supply device and an output end which is used for connecting the power tool, when the switching member is located at the second position, two terminals with different polarities in the first plug-in unit and the second plug-in unit are electrically connected through the switching member, and the rest two terminals with different polarities are respectively electrically connected with two terminals with the same polarity in the output end.

8. An electrical energy storage system comprising a first energy unit and a second energy unit having output voltages of nV, characterized in that: the electric energy switching device can be provided with a first position and a second position which are switched by rotation, and can switch the series-parallel connection form of the first energy unit and the second energy unit by changing the positions so as to output two different voltages.

9. An electrical energy storage system according to claim 8, wherein: the first energy unit and the second energy unit are respectively provided with a positive electrode and a negative electrode for realizing energy output, and the positive electrode and the negative electrode are at least provided with 3 arrangement structures; the electric energy switching device has a switching means for switching the positive and negative electrode coupling forms of the first energy unit and the second energy unit.

10. An electrical energy storage system according to claim 9, wherein: 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 member realizes the output of the low voltage of the electric energy storage system by respectively connecting the electrodes with the same polarity in the first energy unit and the second energy unit.

11. An electrical energy storage system according to claim 9, wherein: 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 in the second position, the switching member enables output of a high voltage of an electrical energy storage system by connecting two electrodes of the first energy unit and the second energy unit, which have opposite polarities.

12. An electric power tool characterized in that: the electric tool uses the electric energy switching device of any one of claims 1 to 7, and the electric tool is matched with an electric energy storage system through the electric energy switching device so that the output voltage output by the electric energy storage system can be matched with the rated voltage of the electric tool.

13. A power tool system comprising a power tool and an electrical energy storage system for providing power to the power tool, characterized in that: the electric energy storage system is the electric energy storage system as claimed in any one of claims 8 to 11, the electric energy storage system is provided with an electric energy switching device, and the electric energy storage system is matched with the electric tool through the electric energy switching device, so that one of two different output voltages output by the electric energy storage system can be matched with the rated voltage of the electric tool.