Power switching component and tool and system having the same

Abstract

The present invention provides an electric energy switching component and a tool and system having the electric energy switching component. An electric energy switching device includes a plug-in for connecting to a power supply device, and the plug-in has an output end for outputting electric energy to the outside world, and also includes an electric energy switching component electrically connected to the plug-in, the electric energy switching component has a switching member for connecting different plug-ins, and the switching member can be rotated between a first position and a second position to switch the coupling form between different plug-ins by changing the abutment position of the switching member. The electric energy switching device of the present invention can realize two voltage switching, so that the electric storage device, electric tool and system using the electric energy switching device can match the electric tool having the electric energy switching device with a variety of power supply devices with different output voltages, effectively increasing the scope of application of the electric energy storage system / electric tool / electric tool system using the electric energy switching device and reducing the cost.

Description

Technical Field

[0001] The invention relates to an electric energy switching component and a tool and a system having the electric energy switching component, belonging to the technical field of garden tools. Background Art

[0002] In the garden machinery and power tool industries, electric tools usually have a rated operating voltage. That is, tools with different rated voltages require battery packs with different rated voltages to provide power. To solve the above problem, battery packs that can achieve dual voltage switching have appeared on the market.

[0003] In the prior art, the voltage regulation structure of a dual-voltage battery pack is concentrated on the battery pack, and voltage selection is achieved through different external plugs (male plugs), so that the battery pack outputs different voltages.

[0004] In the field of larger batteries or backpack batteries, the tool and battery are not directly plugged in, but connected through a power cord. At this time, it is inconvenient to achieve different voltage outputs through different male plugs.

[0005] In view of this, it is necessary to provide a new power switching device suitable for power switching and a tool and system using the power switching device to solve the above problems. Summary of the Invention

[0006] The object of the present invention is to provide an electric energy switching device capable of switching between two voltages, and an electric storage power tool and system using the electric energy switching device.

[0007] To achieve the above-mentioned purpose of the invention, the present invention provides an electric energy switching device, including a plug-in for connecting to a power supply device, and the plug-in has an output end for outputting electric energy to the outside world, and also includes an electric energy switching component electrically connected to the plug-in, the electric energy switching component has a switching member for connecting different plug-ins, and the switching member can be rotated between a first position and a second position to switch the coupling form between different plug-ins by changing the abutment position of the switching member.

[0008] As a further improvement of the present invention, the electric energy switching assembly includes a shell and a control component housed 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 has an initial position and a switching position corresponding to the first position and the second position.

[0009] As a further improvement of the present invention, the power switching assembly further includes an intermediate connecting member for connecting the switching member and the plug-in, and the switching member is rotatably connected to the intermediate connecting member.

[0010] As a further improvement of the present invention, the control member is a seesaw member arranged in a seesaw switch structure, including a switching button arranged on the shell, a trigger part arranged corresponding to the switching button, and a driving part abutting against the switching member, the trigger part is positioned in the shell by rotating the rotating shaft, the rotation axis of the trigger part and the rotation axis of the switching member are located in the same plane or two parallel planes, and the plane where the switching member is located intersects with the plane where the intermediate connecting member is located.

[0011] As a further improvement of the present invention, the control component includes a switching button arranged on the shell and a trigger part arranged corresponding to the switching button. There are two switching components, and the two switching components are symmetrically arranged on both sides of the trigger part, and the plane where the two switching components are located is parallel to the plane where the intermediate connecting component is located.

[0012] As a further improvement of the present invention, the plug-in includes a first plug-in and a second plug-in for connecting to the power supply device and an output end for connecting to the power tool. 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 to the terminal with the same polarity in the output end.

[0013] As a further improvement of the present invention, the plug-in includes a first plug-in and a second plug-in for connecting to the power supply device and an output end for connecting to the power tool. When the switching member is in the second position, the 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 electrically connected to the two terminals with the same polarity in the output end.

[0014] To achieve the above-mentioned purpose of the invention, the present invention provides an electric energy storage system, including a first energy unit and a second energy unit, both of which have an output voltage of nV, and an electric energy switching device for connecting the two groups of the energy units. The electric energy switching device can have a first position and a second position that can be switched by rotation, and the electric energy switching device can switch the series and parallel form of the first energy unit and the second energy unit by changing the position to output two different voltages.

[0015] As a further improvement of the present invention, the first energy unit and the second energy unit both have positive and negative electrodes for achieving energy output, and the positive and negative electrodes have at least three arrangement structures; the electric energy switching device has a switching component for switching the positive and negative electrode coupling form of the first energy unit and the second energy unit.

[0016] As a further improvement of the present invention, the switching component has a first position for connecting the first energy unit and the second energy unit in parallel. When the switching component is in the first position, the switching component realizes low-voltage output of the electric energy storage system by respectively connecting electrodes with the same polarity in the first energy unit and the second energy unit.

[0017] 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. When the switching member is in the second position, the switching member realizes the output of high voltage of the electric energy storage system by connecting two electrodes with opposite polarities in the first energy unit and the second energy unit.

[0018] In order to achieve the above-mentioned purpose of the invention, the present invention provides an electric tool, characterized in that: the electric tool uses the aforementioned power switching device, and the electric tool cooperates with the power storage system through the power switching device so that the output voltage of the power storage system can match the rated voltage of the electric tool.

[0019] In order to achieve the above-mentioned purpose of the invention, the present invention provides an electric tool system, including an electric tool and an energy storage system that provides power to the electric tool, characterized in that: the energy storage system is the aforementioned energy storage system, the energy storage system has an energy switching device, and the energy storage system cooperates with the electric tool through the energy switching device so that one of the two different output voltages output by the energy storage system can match the rated voltage of the electric tool.

[0020] The beneficial effects of the present invention are: the electric energy switching device of the present invention is provided with a switching component that can be switched between a first position and a second position and a plug-in electrically connected to the switching component, and by adjusting the coupling form between different plug-ins, the electric energy storage system using the electric energy switching device can achieve two different voltage outputs; 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, effectively increasing the scope of application of the electric energy storage system / electric tool / electric tool system using the electric energy switching device and reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic diagram of a first embodiment of an electric energy storage system according to the present invention.

[0022] Figure 2 for Figure 1 The schematic diagram of the structure of the electric energy storage system omits the electric energy switching device and part of the cavity.

[0023] Figure 3 for Figure 1 A three-dimensional diagram of the power switching device from another angle

[0024] Figure 4 for Figure 3 Exploded diagram of the power switching device.

[0025] Figure 5 for Figure 4 Schematic diagram of the structure when the power switching component and plug-in are combined.

[0026] Figure 6 for Figure 5 Schematic diagram of the structure from another angle when the power switching component and plug-in are combined.

[0027] Figure 7 for Figure 5 Schematic diagram of the structure of the combination of power switching components, plug-ins and energy units.

[0028] Figure 8 This is a three-dimensional schematic diagram of a second embodiment of the electric energy storage system of the present invention.

[0029] Figure 9 for Figure 8 A three-dimensional diagram of the power switching device from another angle

[0030] Figure 10 for Figure 9 Exploded diagram of the power switching device.

[0031] Figure 11 for Figure 10 Schematic diagram of the structure when the power switching component and plug-in are combined.

[0032] Figure 12 for Figure 10 Schematic diagram of the structure of the combination of power switching components, plug-ins and energy units.

[0033] Figure 13 for Figure 9 Circuit diagram of the electric energy storage system when the electric energy switching device is in the initial position.

[0034] Figure 14 for Figure 9 Circuit structure diagram of the electric energy storage system when the electric energy switching device is in the first position.

[0035] Figure 15 for Figure 9 Circuit structure diagram of the electric energy storage system when the electric energy switching device is in the second position.

[0036] Figure 16 This is a structural diagram of the third embodiment of the electric energy storage system of the present invention, omitting the electric energy switching device and part of the cavity.

[0037] Figure 17 This is a structural diagram of the fourth embodiment of the electric energy storage system of the present invention, omitting the electric energy switching device and part of the cavity.

[0038] Figure 18 It is a three-dimensional schematic diagram of the power tool system of the present invention. DETAILED DESCRIPTION

[0039] In order to make the objectives, technical solutions and advantages of the present invention more clear, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0040] It should also be noted here that, in order to avoid obscuring the present invention due to unnecessary details, only structures and / or processing steps closely related to the solutions of the present invention are shown in the drawings, while other details that are not closely related to the present invention are omitted.

[0041] In addition, it should be noted that the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0042] See also Figure 1 、 Figure 2 As shown, an electric energy storage system provided in the first embodiment of the present invention comprises a first energy unit (unnumbered), a second energy unit (unnumbered) and an electric energy switching device 11 for realizing electric energy output.

[0043] 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 and a negative electrode 13b for outputting electrical energy; further, the electrical energy storage system also 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 plugged into the electrical energy 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 Figures 1 to 6 As shown, the electric energy switching device 11 is plugged into the cavity 14 and is electrically connected to the first energy unit and the second energy connection unit through positive and negative electrodes. The electric energy switching device 11 has an adjustable first position and a second position. When the electric energy switching device 11 switches between the first position and the second position, the series and parallel forms of the first energy unit and the second energy unit can be switched so that the electric energy storage system outputs two different voltages.

[0044] See also Figures 3 to 7 As shown, in the present invention, the power switching device 11 comprises a housing 111 , a plug-in unit 112 accommodated in the housing 111 , and a power switching assembly 113 adjustably connected to the plug-in unit 112 .

[0045] Furthermore, the housing 111 is provided with a receiving space (unnumbered) for accommodating the plug-in 112 and the power switching 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 outputting power. The first plug-in 1121, the second plug-in 1122, and the output terminal 1123 are all connected and installed in the receiving space.

[0046] Specifically, 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 is connected to the first plug-in 1121 and the second plug-in 1122, respectively. 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 to the positive output 1123a in the output terminal 1123, and the negative terminal 1121b in the first plug-in 1121 or the negative terminal 1122b in the second plug-in 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-in 1121 and the second plug-in 1122 completes the output of electrical energy through the output terminal 1123.

[0047] In a preferred embodiment of the present invention, the positive / negative terminals 1121a, 1122a, 1121b, and 1122b in the first plug-in 1121 and the second plug-in 1122 are all male plug-ins arranged in a sheet shape, and the ends of each male plug-in are located in the same straight line, and the two terminals with the same polarity in the first plug-in 1121 and the second plug-in 1122 are arranged side by side; further, the output terminal 1123 is a female plug terminal arranged approximately parallel to the first plug-in 1121 and the second plug-in 1122, and the output terminal 1123 is arranged on two different side walls of the housing 111 from the first plug-in 1121 and the second plug-in 1122; this facilitates the connection between the first plug-in 1121, the second plug-in 1122, and the output terminal 1123.

[0048] Of course, in other embodiments of the present invention, the positive terminals 1121a, 1122a and the negative terminals 1121b, 1122b in the first plug-in 1121 and the second plug-in 1122 can also be arranged in a variety of ways that are different from a linear arrangement, such as a front-to-back arrangement or an up-and-down arrangement, and the setting shapes of the first plug-in 1121, the second plug-in 1122 and the output end 1123 can be adjusted according to the specific structure of the power switching component 113; that is, in the present invention, the arrangement form and setting form of the first plug-in 1121, the second plug-in 1122 and the output end 1123 can be selected according to actual needs.

[0049] The power switching assembly 113 includes a switching member 114 and a control member 115. The switching member 114 is used to electrically connect the first plug-in 1121 and the second plug-in 1122 and can switch the coupling mode between the first plug-in 1121 and the second plug-in 1122. Specifically, the switching member 114 is housed within the housing 111 and is rotatably housed within the housing 111 via a rotational axis 1141. Under the control of the control member 115, the switching member 114 can rotate about the rotational axis 1141 and swing between a first position and a second position to further adjust the coupling mode between the first plug-in 1121 and the second plug-in 1122.

[0050] In the present invention, the power switching component 113 also includes an intermediate connecting member 116 for connecting the switching member 114 and the first plug-in 1121, the second plug-in 1122 and the output end 1123, and the switching member 114 is rotatably connected to the intermediate connecting member 116 through the rotating shaft 1141. In the present invention, the intermediate connecting member 116 has a plurality of intermediate connecting plates for connecting the first plug-in 1121, the second plug-in 1122 and / or the output end 1123, and each intermediate connecting plate is a metal intermediate connecting member made of 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 end 1123 through the metal intermediate connecting member to realize the power transmission of the power switching device 11.

[0051] In a preferred embodiment of the present invention, the switching member 114 is configured as a plate with a certain curvature, which can be a seesaw or curved plate, so that the plane of the switching member 114 intersects the plane of the intermediate connecting member 116. In this embodiment, the power switching assembly 113 controls the switching member 114 to rotate about the rotation axis 1141, and the two ends of the switching member 114 abut against the intermediate connecting member 116 and / or the combination of the first plug-in 1121 and the second plug-in 1122 to complete the switching of the coupling mode between the first plug-in 1121 and the second plug-in 1122. Furthermore, the end of the switching assembly 114 is provided with a protrusion 1142 for improving electrical contact performance, and the protrusion 1142 is respectively provided corresponding to the positive terminals 1121a and 1122a and the negative terminals 1121b and 1122b of the first plug-in 1121 and the second plug-in 1122.

[0052] Preferably, the switching member 114 includes a first switching member 1143 and a second switching member 1144 arranged in parallel and side by side, wherein the first switching member 1143 and the second switching member 1144 are fixedly connected by an arc-shaped connecting portion (unnumbered) so that the switching member 114 is roughly arranged in an "H" shape. Furthermore, there are multiple protrusions 1142 and they are respectively located at the ends of each switching member 114, and the protrusions 1142 located on the same switching member 114 are symmetrically arranged about the axial direction of rotation of the rotation shaft 1141.

[0053] The control member 115 is rotatable within the housing 111 to drive the switching member 114 to move between a first position and a second position. In the present invention, the control member 115 is a seesaw member disposed corresponding to the switching member 114 and configured in a seesaw switch structure. The control member 115 includes a switching button 117 disposed on the housing 111, a trigger portion 118 disposed corresponding to the switching button 117, and a driving portion 119 abutting against the switching member 114. The switching button 117 is disposed on the housing 111 in a pushable manner. The trigger portion 118 is rotatably fixed within the housing 111 via a rotating shaft 1181 and is located below the switching button 117, so that the switching button 117 drives the trigger portion 118 to rotate about the rotating shaft 1181. Furthermore, the axis of the rotating shaft 1181 of the trigger portion 118 and the axis of the rotating shaft 1141 of the switching member 114 are located in the same plane or in two mutually parallel planes.

[0054] Furthermore, one end of the driving portion 119 is abutted against the switching member 114, and the other end is connected to the trigger portion 118, and the end of the driving portion 119 abutting against the switching member 114 is arranged in an arc shape to ensure that the driving portion 119 can be tightly attached to the arc-shaped connecting portion of the switching member 114 and drive the switching member 114 to rotate.

[0055] Preferably, the trigger portion 118 has a receiving hole (not shown) for accommodating the driving portion 119, and an elastic element (not shown) for elastically connecting the trigger portion 118 and the driving portion 119 is provided between the trigger portion 118 and the driving portion 119. With such an arrangement, when the control member 115 is abutted against the switching member 114, the driving portion 119 is abutted against the switching member 114 along the side away from the trigger portion 118 under the action of the elastic element, so that in the process of driving the switching member 114 to rotate by the control member 115, the end portion / protrusion 1142 of the switching member 114 is tightly abutted against the plug-in 112 / intermediate connecting member 116, so as to ensure the stability of the power transmission of the power switching device 11.

[0056] Specifically, the control member 115 has an initial position and switching positions corresponding to the first position and the second position. The switching position when the control member 115 controls the switching member 114 to be in the first position is defined as the first switching position, and the switching position when the control member 115 is in the second position is defined as the second switching position.

[0057] When the switch button 117 is in the initial position, the driving part 119 is pressed against the central axis of the switching member 114 to prevent the switching member 114 from deflecting and the switching member 114 from contacting the plug-in 112; the positive electrodes 12a, 13a and the negative electrodes 12b, 13b of the first energy unit and the second energy unit connected to the plug-in 112 are in an open-circuit state, and the energy storage system cannot transmit electrical energy to the outside.

[0058] See also Figure 7 Combined with Figure 5 、 Figure 6 As shown, when the switching member 114 rotates to the first switching position under the supporting action of the control member 115, the first protrusion 1142a on the first switching member 1143 is supported on the intermediate connecting member 116a, and the first protrusion 1144b on the second switching member 1144 is supported on the intermediate connecting member 116d. Further, the intermediate connecting member 116a and the intermediate connecting member 116d are electrically connected to the intermediate connecting member 116c and the intermediate connecting member 116b respectively under the supporting force of the switching member 114, so that the positive terminal 1121a of the first plug-in 1121 and the positive terminal 1122a of the second plug-in 1122 are electrically connected, and the negative terminal 1121b of the first plug-in 1121 and the negative terminal 1122b of the second plug-in 1122 are electrically connected.

[0059] Furthermore, 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; so that the first energy unit and the second energy unit are connected in parallel, and a low voltage (i.e., nV) output is achieved through the output end 1123.

[0060] When the switching member 114 rotates to the second switching position under the supporting action of the control member 115, the second protrusion 1142c on the first switching member 1143 and the second protrusion 1144d on the second switching member 1144 are both supported on the intermediate connecting member 116e, and further electrically connected to the positive terminal 1122a of the second plug-in 1122 and the negative terminal 1121b of the first plug-in 1121 through the intermediate connecting members 116b and 116c.

[0061] Furthermore, 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 and the second energy unit are connected in series, and a high voltage (i.e., 2nV) output is achieved through the output end 1123.

[0062] See also Figure 8 Combined with Figure 2 As shown, in the electric energy storage system in embodiment 2 of the present invention, in this embodiment, the electric energy storage system has the same first energy unit and second energy connection unit, and the difference lies mainly in the structure and form of the electric energy switching device 12. The following description will elaborate on the differences in detail, and the same or similar contents will not be repeated here.

[0063] See also Figures 9 to 11 As shown, in this embodiment, the power switching device 12 comprises a housing 121, a plug-in 122 housed within the housing 121, and a power switching assembly 123 adjustably connected to the plug-in 122. Furthermore, the housing 121 is provided with a receiving space (unnumbered) for accommodating the plug-in 122 and the power switching assembly 123. The plug-in 122 includes a first plug-in 1221 and a second plug-in 1222 for electrically connecting the first energy unit and the second energy unit, and an output terminal 1223 for achieving power output. The first plug-in 1221, the second plug-in 1222, and the output terminal 1223 are all connected and mounted within the receiving space.

[0064] The power switching assembly 123 includes a control member 124 and a switching member 125. The control member 124 includes a switching button 126 disposed on the trigger 121 corresponding to the housing button 126, a switching portion 128, and an intermediate connecting member 129 corresponding to the trigger portion 128. In this embodiment, the switching button 126 and the trigger portion 128 are integrally formed. The switching button 126 partially extends through the housing 121 and is engaged within the receiving space by the trigger portion 128. Furthermore, the trigger portion 128 is provided with a limiting post 1281 protruding along the extension direction of the switching button 126. The housing 121 is provided with a supporting post (not shown) corresponding to the limiting post 1281. When the switching button 126 is rotated, the limiting post 1281 and the supporting post can restrain the switching button 126 in a fixed position, thereby preventing the switching member 125 connected to the control member 124 from swinging freely between the first position and the second position.

[0065] The intermediate connecting member 129 is provided with staggered connection holes (unnumbered). In this embodiment, the intermediate connecting member 129 is an insulating intermediate connecting member made of insulating material. Furthermore, the positive terminals 1221a, 1222a, and the negative terminals 1221b, 1222b of the first plug-in 1221 and the first plug-in 1222 each have connecting portions (unnumbered) corresponding to the connection holes. The connecting 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 are exposed on the surface of the intermediate connecting member 129 near the trigger portion 128 through the connection holes. The positive terminal 1221a and the negative terminal 1221b of the first plug-in 1221, and the positive terminal 1222a and the negative terminal 1222b of the first plug-in 1222 are respectively disposed on opposite sides of the intermediate connecting member 129.

[0066] The switching member 125 is disposed at one end of the trigger portion 128 near the intermediate connecting member 129 and can rotate about the trigger portion 128 under the drive of the switching button 126 to switch between the first position and the second position. Furthermore, the switching member 125 includes a first switching member 1251 and a second switching member 1252 symmetrically disposed on either side of the trigger portion 128. In this embodiment, each switching member 125 has a first end 1253a, 1253b and a second end 1253c, 1253d extending outward from the first end 1253a, 1253b. The spacing between the two first ends 1253a, 1253b is smaller than the spacing between the two second ends 1253c, 1253d, thereby forming a substantially "Y"-shaped gap between the first switching member 1251 and the second switching member 1252.

[0067] In this embodiment, the switching member 125 also has an initial position, a first switching position corresponding to the first position, and a second switching position corresponding to the second position. Figure 12 and Figure 13 As shown, when the switching member 125 is in the initial position, the switching member 125 does not contact the connection parts of the positive terminals 1221a, 1222a and the negative terminals 1221b, 1222b in 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 energy unit and the second energy unit connected to the plug-in 122 are in an open circuit state, and the energy storage system cannot transmit electrical energy to the outside.

[0068] See also Figure 12 and Figure 14 As shown, when the switching member 125 is rotated to the first switching position under the action of the control member 124, the first end 1253a and the second end 1253c of the first switching member 1251 are respectively connected to the positive terminal 1221a of the first plug-in 1221 and the positive terminal 1222a of the second plug-in 1222 through the connecting part; the first end 1253b and the second end 1253d of the second switching member 1252 are respectively connected to the negative terminal 1222b of the first plug-in 1221 and the negative terminal 1222b of the first plug-in 1222 through the connecting part.

[0069] Furthermore, the positive output 1223a in the output terminal 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 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 a low voltage (i.e., nV) output is achieved through the output terminal 1223.

[0070] See also Figure 12 and Figure 15 As shown, when the switching member 125 rotates to the second switching position under the action of the control member 124, the first end 1253b and the second end 1253d of the second switching member 1252 are respectively connected to the negative terminal 1222b of the first plug-in 1221 and 1222a of the second plug-in 1222 through the connecting part; at least one of the first end 1253a and the second end 1253c of the first switching member 1251 rotates along the plane where the intermediate connecting member 129 is located, and does not contact the connecting part on the intermediate connecting member 129.

[0071] Furthermore, the positive output 1223a in the output terminal 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; so that the first energy unit and the second energy unit are connected in series, and a high voltage (i.e., 2nV) output is achieved through the output terminal 1223.

[0072] See also Figure 16 FIG2 is a schematic diagram of the structure of an electric energy storage system according to a third embodiment of the present invention. In this embodiment, the electric energy storage system has a structure substantially similar to that of the electric energy storage system according to the first embodiment, with the only difference being that the positive electrodes 12a′, 13a′ and negative electrodes 12b′, 13b′ in the first and second energy units, and the positive terminals 1121a, 1122a and negative terminals 1121b, 1122b in the electric energy switching device 11 are arranged vertically.

[0073] See also Figure 17 FIG. 4 is a schematic diagram of the structure of an energy storage system according to a fourth embodiment of the present invention. In this embodiment, the energy storage system has substantially the same structure as the energy storage systems of the first and second embodiments, differing only in that the positive electrodes 12a", 13a", negative electrodes 12b", 13b", and positive terminals 1121a, 1122a, and negative terminals 1121b, 1122b in the first and second energy cells are arranged in a front-to-back arrangement.

[0074] The present invention further provides an electric tool (not shown). The electric tool includes a tool body and an electric energy switching device 11 for electrically connecting the tool body and a power supply device.

[0075] In the present invention, the tool body has a plug-in portion for connecting to the electric energy switching device 11, and the plug-in portion has two connecting pieces with opposite polarities, and the two connecting pieces with opposite polarities are respectively connected to the positive output 23a and the negative output 23b with the same polarity in the output end 1123 in the electric energy switching device 11 to ensure the normal input of the working voltage.

[0076] In the present invention, the rated voltage of the electric tool is nV, and the electric tool can be connected to different power supply devices having energy units with output voltages of n / 2V or nV through the electric energy switching device 11 .

[0077] 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. In this embodiment, each energy unit with an output voltage of n / 2V has two output electrodes with opposite polarities.

[0078] Furthermore, when the electric tool is electrically connected to the dual-voltage power supply device / single-voltage power supply device through the electric energy switching device 11, the electric energy switching device 11 is electrically connected to the output electrodes of two energy units with an output voltage of n / 2V through the positive terminal 1121a and the negative terminal 1121b in the first plug-in 1121 and the positive terminal 1122a and the negative terminal 1122b in the second plug-in 1122. At this time, the switching component 114 can be controlled to move to the second position through the control component 115, so that the negative terminal 1121b of the first plug-in 1121 and the positive terminal 1122a in the second plug-in 1122 are electrically connected through the switching component 114; to control the two energy units with an output voltage of n / 2V to be connected in series, the voltage output by the dual-voltage 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 electric tool.

[0079] The electric tool can also 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 nV, and each energy unit with an output voltage of nV has two output electrodes with opposite polarities.

[0080] 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 by the control member 115 to move to the first position. At this time, the positive terminal 1121a of the first plug-in 1121 and the positive terminal 1122a in the second plug-in 1122 are electrically connected through the switching member 114; the negative terminal 1121b of the first plug-in 1121 and the negative terminal 1122b in the second plug-in 1122 are electrically connected through the switching member 114 / intermediate connecting member 11 6 electrical connection; further, the power switching device 11 is electrically connected to the output electrodes of the two energy units with an output voltage of nV through the positive terminal 1121a and the negative terminal 1121b in the first plug-in 1121 and the positive terminal 1122a and the negative terminal 1122b in the second plug-in 1122, so that the two energy units with an output voltage of nV are connected in parallel, and the voltage output by 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.

[0081] The electric 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 with opposite polarities.

[0082] 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 by the switching button 117. At this time, the positive terminal 1122a in 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 power switching device 11 is connected to the two terminals of the first plug-in 1121 and the second plug-in 1122 with opposite polarities, arranged side by side and close to each other, such as Figure 2 The positive terminal 1122a in the second plug-in 1122 and the negative terminal 1121b of the first plug-in 1121 are electrically connected to the output electrode of the energy unit with an output voltage of nV, and output a voltage of nV to meet the rated voltage of the tool body and ensure the normal operation of the power tool.

[0083] See also Figure 18 As shown, 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 to perform corresponding work tasks, and the electric energy storage system is used to provide corresponding power to the electric tool 201 to ensure the normal operation of the electric tool system 20.

[0084] In the present invention, the electric tool 201 has a plug 202 for connecting to an electric energy storage system, and in the present invention, the electric tool 201 can be a low-voltage electric tool for receiving low-voltage input; or a high-voltage electric tool for receiving high-voltage input.

[0085] Furthermore, the electric energy storage system completes the switching of the output voltage through the electric energy switching device 11 provided thereon, so that the electric tool system 20 can match low-voltage electric tools or high-voltage electric tools, effectively improving the practicality of the electric tool system 20 of the present invention.

[0086] It should be noted that in the process of explaining the structure of the power tool and the power tool system 20 in this specification, the power switching device 11 includes the aforementioned power switching device 11, and the power switching device 12 also includes all power switching devices that do not deviate from the spirit and scope of the technical solution of the present invention. That is, in the process of explaining the structure of the power tool and the power tool system 20 in this specification, for the convenience of description, only the power switching device 11 is used as an example for illustration, but it should not be limited to this.

[0087] To sum up, the power switching devices 11 and 12 of the present invention are provided with switching components 114 and 125 that can switch between a first position and a second position and plug-ins 112 and 122 that are electrically connected to the switching components 114 and 125. By adjusting the coupling form between different plug-ins 112 and 122, the power storage system using the power switching devices 11 and 12 can achieve output of two different voltages; at the same time, the power tools having the power switching devices 11 and 12 can also be matched with a variety of power supply devices with different output voltages, effectively increasing the scope of application of the power storage system / power tool / power tool system 20 using the power switching devices 11 and 12 and reducing the cost.

[0088] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. An electric energy switching device, comprising a plug-in for connecting to a power supply device, wherein the plug-in has an output terminal for outputting electric energy to the outside, characterized in that: The device further includes an electric energy switching assembly electrically connected to the plug-in, the electric energy switching assembly having a switching member for connecting different plug-ins, the switching member being rotatable between a first position and a second position to switch the coupling mode between different plug-ins by changing the abutting position of the switching member; The electric energy switching assembly includes a control component, which includes a switching button and a trigger portion corresponding to the switching button. The trigger portion is arranged in cooperation with the switching component. The switching button drives the trigger portion to rotate to drive the switching component to move between a first position and a second position. The electric energy switching assembly also includes an intermediate connecting component for connecting the switching component and the plug-in, and the switching component is rotatably connected to the intermediate connecting component. The movement of the switching component between the first position and the second position corresponds to a change in the abutment position between the switching component and the intermediate connecting component.

2. The electric energy switching device according to claim 1, characterized in that: The electric energy switching device has a housing, the control member is accommodated in the housing, the control member is rotatable in the housing, and the control member has an initial position and a switching position corresponding to the first position and the second position.

3. The electric energy switching device according to claim 2, characterized in that: The control member is a seesaw member arranged in a seesaw switch structure, the switching button is arranged on the shell, the control member also includes a driving part that is supported on the switching member, the trigger part is positioned in the shell by rotating the rotating shaft, the rotation axis of the trigger part and the rotation axis of the switching member are located in the same plane or two parallel planes, and the plane where the switching member is located intersects with the plane where the intermediate connecting member is located.

4. The electric energy switching device according to claim 2, characterized in that: The switching button is provided on the housing, and two switching members are provided. The two switching members are symmetrically arranged on both sides of the trigger portion, and the plane where the two switching members are located is parallel to the plane where the intermediate connecting member is located.

5. The electric energy switching device according to claim 1, characterized in that: The plug-in includes a first plug-in and a second plug-in for connecting to the power supply device and an output end for connecting to the power tool. 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 to the terminal with the same polarity in the output end.

6. The electric energy switching device according to claim 1, characterized in that: The plug-in includes a first plug-in and a second plug-in for connecting to the power supply device and an output end for connecting to the power tool. 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 electrically connected to the two terminals with the same polarity in the output end.

7. An electric energy storage system comprising a first energy unit and a second energy unit, both of which have an output voltage of nV, characterized in that: Also included is an electric energy switching device for connecting the two groups of the energy units, the electric energy switching device can be switched between a first position and a second position by rotation, and the electric energy switching device can switch the series-parallel connection of the first energy unit and the second energy unit by changing the position to output two different voltages; The power switching device includes a plug-in for connecting a first energy unit and a second energy unit, and the plug-in has an output terminal for outputting power to the outside world; the power switching device also includes a power switching assembly electrically connected to the plug-in, the power switching assembly having a switching member for connecting different plug-ins, the switching member being rotatable between a first position and a second position to switch the coupling mode between different plug-ins by changing the abutment position of the switching member; The electric energy switching assembly includes a control component, which includes a switching button and a trigger portion corresponding to the switching button. The trigger portion is arranged in cooperation with the switching component. The switching button drives the trigger portion to rotate to drive the switching component to move between a first position and a second position. The electric energy switching assembly also includes an intermediate connecting component for connecting the switching component and the plug-in, and the switching component is rotatably connected to the intermediate connecting component. The movement of the switching component between the first position and the second position corresponds to a change in the abutment position between the switching component and the intermediate connecting component.

8. The electric energy storage system according to claim 7, wherein: The first energy unit and the second energy unit both have positive and negative electrodes for achieving energy output, and the positive and negative electrodes have at least three arrangement structures; the switching component is used to switch the positive and negative electrode coupling form of the first energy unit and the second energy unit.

9. The electric energy storage system according to claim 8, wherein: The switching component has a first position for connecting the first energy unit and the second energy unit in parallel. When the switching component is in the first position, the switching component realizes low-voltage output of the electric energy storage system by respectively connecting electrodes with the same polarity in the first energy unit and the second energy unit.

10. The electric energy storage system according to claim 8, 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 second position, the switching member realizes the output of high voltage of the electric energy storage system by connecting two electrodes with opposite polarities in the first energy unit and the second energy unit.

11. An electric tool, characterized in that: The electric tool uses the electric energy switching device described in any one of claims 1 to 6, and the electric tool cooperates with the electric energy storage system through the electric energy switching device so that the output voltage of the electric energy storage system can match the rated voltage of the electric tool.

12. A power tool system comprising a power tool and an energy storage system for providing power to the power tool, characterized in that: The electric energy storage system is the electric energy storage system described in any one of claims 7 to 10, and 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 match the rated voltage of the electric tool.

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