Electric energy switching component, tool and system having the same

Abstract

The present invention provides an electric energy switching component, a tool and a system having the electric energy switching component. The electric energy switching device includes a plug for connecting a power supply device, and the plug has an output end for outputting electric energy to the outside. The electric energy switching device further includes an electric energy switching component electrically connected to the plug. The electric energy switching component includes a switching component driven by pressing. The switching component can move between a first position and a second position under the pressing action to switch the coupling form of the plug. The electric energy switching device of the present invention 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 having the electric energy switching device to match a variety of power supply devices with different output voltages, effectively increasing the applicable range 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 present invention relates to an electric energy switching component, a tool and a system having the electric energy switching component, and belongs to the technical field of gardening tools. Background Art

[0002] In the gardening machinery and power tool industries, electric tools usually have a rated working voltage. That is, tools with different rated voltages require battery packs with different rated voltages to provide power. To solve the above problems, battery packs capable of dual-voltage switching have emerged on the existing market.

[0003] In the prior art, the voltage regulation structures for dual-voltage battery packs are all concentrated on the battery packs, and different external plugs (male plugs) are used to select the voltage, so that the battery packs output different voltages.

[0004] In the field of large-volume batteries or backpack batteries, the tool and the battery are not directly plugged in, but are connected by 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 electric energy switching device suitable for electric energy switching, a tool and a system using the electric energy switching device to solve the above problems. Summary of the Invention

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

[0007] To achieve the above-mentioned invention purpose, the present invention provides an electric energy switching device, including a plug for connecting a power supply device, and the plug has an output end for outputting electric energy to the outside. The electric energy switching device further includes an electric energy switching component electrically connected to the plug. The electric energy switching component includes a switching member driven by pressing. The switching member can move between a first position and a second position under the pressing action to switch the coupling form of the plug.

[0008] As a further improvement of the present invention, the plug includes a first plug and a second plug for connecting the power supply device and an output end for connecting the electric tool. When the switching member is in the first position, two terminals with the same polarity in the first plug and the second plug are electrically connected through the switching member and further electrically connected to the terminal with the same polarity in the output end.

[0009] As a further improvement of the present invention, the plug-in includes a first plug and a second plug for connecting the power supply device and an output end for connecting the electric tool. When the switching member is in the second position, two terminals with different polarities in the first plug and the second plug are electrically connected through the switching member, and the remaining two terminals with different polarities are respectively electrically connected to two terminals with the same polarity in the output end.

[0010] As a further improvement of the present invention, the electric energy switching component further includes a housing and a control member housed in the housing. The control member is used to control the switching member to move between the first position and the second position, and the control member has an initial position corresponding to the first position and a switching position corresponding to the second position.

[0011] As a further improvement of the present invention, the control member includes a return button, a switching button penetrating through the housing, and a return shaft for connecting the return button and the switching button in a restoring manner, and the return shaft is rotatably fixed in the receiving space of the housing.

[0012] As a further improvement of the present invention, the return shaft has a rotating shaft rotatably fixed in the housing and fins extending in the radial direction of the rotating shaft. The return button and the switching button are located on both sides of the axis direction of the rotating shaft, and the return button and the switching button are respectively provided with abutting grooves corresponding to the fins.

[0013] As a further improvement of the present invention, the housing is provided with a switching space for housing the control member and the switching member. The housing is further provided with a rail / groove structure for slidably housing the switching member, and the rail / groove structure is housed in the switching space.

[0014] To achieve the above-mentioned invention purpose, the present invention provides an electric energy storage system, which includes a first energy unit and a second energy unit with an output voltage of nV, and further includes an electric energy switching device for connecting the two groups of energy units. The electric energy switching device can switch the series-parallel forms of the first energy unit and the second energy unit by pressing to output two different voltages.

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

[0016] 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. When the switching member is in the first position, the switching member realizes the output of the low voltage of the electrical energy storage system by connecting the electrodes with the same polarity in the first energy unit and the second energy unit respectively.

[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 the high voltage of the electrical energy storage system by connecting two electrodes with opposite polarities in the first energy unit and the second energy unit.

[0018] To achieve the above-mentioned invention purpose, the present invention provides a power tool, characterized in that: the power tool uses the aforementioned electrical energy switching device, and the power tool cooperates with the electrical energy storage system through the electrical energy switching device so that the output voltage output by the electrical energy storage system can match the rated voltage of the power tool.

[0019] To achieve the above-mentioned invention purpose, the present invention provides a power tool system, including a power tool and an electrical energy storage system for supplying power to the power tool. The electrical energy storage system is the aforementioned electrical energy storage system. The electrical energy storage system has an electrical energy switching device, and the electrical energy storage system cooperates with the power tool through the electrical energy switching device so that one of the two different output voltages output by the electrical energy storage system can match the rated voltage of the power tool.

[0020] The beneficial effects of the present invention are as follows: The electrical energy switching device of the present invention realizes the output of two different voltages for the electrical energy storage system using the electrical energy switching device by setting a switching member that can be switched between a first position and a second position and a plug electrically connected to the switching member, and by adjusting the coupling form between different plugs; at the same time, it can also make the power tool with the electrical energy switching device match a variety of power supply devices with different output voltages, effectively increasing the applicable range of the electrical energy storage system / power tool / power tool system using the electrical energy switching device and reducing the cost. Description of the Drawings

[0021] Figure 1 It is a three-dimensional schematic diagram of the electrical energy storage system of the present invention.

[0022] Figure 2 For Figure 1 The structural schematic diagram of the electrical energy storage system in with the electrical energy switching device and part of the cavity omitted.

[0023] Figure 3 For Figure 1Schematic perspective view of the electric energy switching device.

[0024] Figure 4 is Figure 1 Exploded schematic view of the electric energy switching device.

[0025] Figure 5 is Figure 4 Exploded schematic view of the switching member in [device name].

[0026] Figure 6 Schematic combination structure diagram of the electric energy switching component and the plug when the electric energy switching device is in the first position.

[0027] Figure 7 is Figure 6 Schematic combination structure diagram when the elastic member is omitted.

[0028] Figure 8 Schematic connection structure diagram of the plug when the electric energy switching device is in the first position.

[0029] Figure 9 Circuit structure diagram of the electric energy storage system when the electric energy switching device is in the first position.

[0030] Figure 10 Schematic combination structure diagram of the electric energy switching component and the plug when the electric energy switching device is in the second position and the elastic member is omitted.

[0031] Figure 11 Schematic connection structure diagram of the plug when the electric energy switching device is in the second position.

[0032] Figure 12 Circuit structure diagram of the electric energy storage system when the electric energy switching device is in the second position.

[0033] Figure 13 is Figure 4 Partial enlarged view of the connection position between the switching part and the switching member in [device name].

[0034] Figure 14 Schematic structure diagram of the second embodiment of the electric energy storage system of the present invention with the electric energy switching device and part of the cavity omitted.

[0035] Figure 15 Schematic structure diagram of the third embodiment of the electric energy storage system of the present invention with the electric energy switching device and part of the cavity omitted.

[0036] Figure 16 Schematic perspective view of the electric tool system of the present invention. Detailed Description of the Invention

[0037] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0038] Here, it should also be noted that, in order to avoid obscuring the present invention due to unnecessary details, only the structures and / or processing steps closely related to the solution of the present invention are shown in the drawings, while other details less relevant to the present invention are omitted.

[0039] In addition, it should be noted that the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0040] Please refer to Figure 1 、 Figure 2 As shown, a power storage system 10 provided by the present invention includes a first energy unit (not labeled), a second energy unit (not labeled), and a power switching device 11 for realizing power output.

[0041] 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 power output; the second energy unit has a positive electrode 13a and a negative electrode 13b for power output; further, the power storage system 10 further includes a cavity 14 for accommodating the first energy unit and the second energy unit, and 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 power switching device 11, and in the present invention, the positive electrodes 12a, 13a and the negative electrodes 12b, 13b have at least three arrangement structures.

[0042] Please refer to Figures 1 to 4 As shown, the power switching device 11 is plugged into the cavity 14 and electrically connected to the first energy unit and the second energy unit through positive and negative electrodes, and the power switching device 11 has adjustable first and second positions, and when the power switching device 11 switches between the first position and the second position, the series-parallel forms of the first energy unit and the second energy unit can be switched so that the power storage system 10 outputs two different voltages.

[0043] The power switching device 11 includes a housing 111, a plug-in unit housed in the housing 111, and a power switching component 113 that is adjustably connected to the plug-in unit. The housing 111 is provided with a receiving space (not labeled) for housing the plug-in unit and the power switching component 113. The plug-in unit includes a first plug 1121 and a second plug 1122 for electrically connecting a first energy unit and a second energy unit, and an output terminal 1123 for realizing power output. The first plug 1121, the second plug 1122, and the output terminal 1123 are all connected and installed in the receiving space.

[0044] Furthermore, the first plug 1121 and the second plug 1122 each have 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. The output terminal 1123 is respectively connected to the first plug 1121 and the second plug 1122. That is, the positive terminal 1121a in the first plug 1121 or the positive terminal 1122a in the second plug 1122 is electrically connected to the positive output 1123a in the output terminal 1123, and the negative terminal 1121b in the first plug 1121 or the negative terminal 1122b in the second plug 1122 is electrically connected to the negative output 1123b in the output terminal 1123, so as to ensure that the power supply device connected to the first plug 1121 and the second plug 1122 completes power output through the output terminal 1123.

[0045] In a preferred embodiment of the present invention, the positive electrodes 12a, 13a, the negative electrodes 12b, 13b, the positive terminals 1121a, 1122a, and the negative terminals 1121b, 1122b are arranged in a line and inserted correspondingly one by one, and the electrodes / terminals with opposite polarities are arranged alternately. Furthermore, the output terminal 1123 is arranged substantially parallel to the first plug 1121 and the second plug 1122, and is respectively arranged on different side walls of the housing 111; to facilitate the connection between the first plug 1121, the second plug 1122, and the output terminal 1123.

[0046] Please refer to Figure 5 and combine with Figure 4As shown, the power switching component 113 includes a switching member 114 and a control member 115. In the present invention, the switching member 114 is used to electrically connect the first plug-in 1121 and the second plug-in 1122 and can switch the coupling form of the first plug-in 1121 and the second plug-in 1122. Specifically, the switching member 114 is housed in the housing 111, and the housing 111 is provided with a rail / slide groove structure (not shown) for housing the switching member 114. The switching member 114 is slidably connected in the rail / slide groove structure and can move along the rail / slide groove structure between a first position and a second position under the action of the control member 115, and further adjust the coupling form of the first plug-in 1121 and the second plug-in 1122.

[0047] In a preferred embodiment of the present invention, the switching member 114 includes a first switching member 1142 and a second switching member 1143 connected by an elastic member 1141. Further, the first switching member 1142 has a first connection terminal 1144 and a protrusion (not labeled) for connecting the elastic member 1141. The first connection terminal 1144 has a first connection portion 1144a for connecting the first plug-in 1121 and / or the second plug-in 1122 and a second connection portion 1144b extending toward the second switching member 1143 for connecting the second switching member 1143.

[0048] The second switching member 1143 has a structure substantially the same as that of the first switching member 1142, that is, the second switching member 1143 has a second connection terminal 1145 and a protrusion (not labeled) disposed toward the first switching member 1142, and the second connection terminal 1145 also has a third connection portion 1145a for connecting the first plug-in 1121 and / or the second plug-in 1122 and a fourth connection portion 1145b extending toward the first switching member 1142 for connecting the first switching member 1142. Preferably, both the first connection terminal 1144 and the second connection terminal 1145 are integrally formed and are in an "L" shape and respectively cover the outer walls of the first switching member 1142 and the second switching member 1143.

[0049] Specifically, the elastic member 1141 is connected between the first switching member 1142 and the second switching member 1143 through a protrusion. Please refer to Figure 6 and Figure 7As shown, when the elastic member 1141 is in the natural elongation state, the switching member 114 is in the first position; when the switching member 114 is in the first position, the first connecting portion 1144a of the first connecting terminal 1144 is electrically connected to the positive terminal 1121a and 1122a in the first plug-in 1121 and the second plug-in 1122, so that the positive electrodes 12a and 13a in the first energy unit and the second energy unit are electrically connected; the negative terminals 21b and 22b in the first plug-in 1121 and the second plug-in 1122 are electrically connected through the third connecting portion 1145a of the second switching member 1143, so that the negative electrodes 12b and 13b in the first energy unit and the second energy unit are electrically connected; and at this time, the second connecting portion 1144b and the fourth connecting portion 1145b are separated (as Figure 3 shown).

[0050] Furthermore, the positive output 1123a in the output terminal 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 realized through the output terminal 1123 (as Figure 8 , Figure 9 shown).

[0051] Please refer to Figure 10 and combine with Figure 6 shown. When the elastic member 1141 is in the compressed state under the control of the control member 115, the switching member 114 is in the second position. Then, when the switching member 114 is in the second position, the second connecting portion 1144b in the first switching member 1142 is connected to the fourth connecting portion 1145b in the second switching member 1143, so that the first switching member 1142 and the second switching member 1143 are connected as a conductive whole through the second connecting portion 1144b and the fourth connecting portion 1145b. Two terminals with opposite polarities and adjacent settings in the first plug-in 1121 and the second plug-in 1122 are electrically connected through the first switching member 1142 and the second switching member 1143. That is, at this time, the first connecting portion 1144a is separated from the positive terminal 1121a in the first plug-in 1121, the third connecting portion 1145a is separated from the negative terminal 1122b in the second plug-in 1122, and the adjacent negative terminal 1121b and the positive terminal 1122a are electrically connected through the combination of the first connecting portion 1144a, the third connecting portion 1145a, the second connecting portion 1144b and the fourth connecting portion 1145b.

[0052] Further, the positive output 1123a in the output terminal 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 terminal 1123 (as Figure 11 , Figure 12 shown).

[0053] The control member 115 is used to drive the switching member 114 to move in the rail / slider structure, so that the switching member 114 can be switched between the first position and the second position. In the present invention, the control member 115 includes a switching button 116, a return button 117, and a return shaft 118 for connecting the switching button 116 and the return button 117.

[0054] Specifically, the switching button 116 is used to control the sliding of the switching member 114 between the first position and the second position, and has an initial position corresponding to the first position and a switching position corresponding to the second position. Further, the switching button 116 includes a pressing part and a switching part 1161 connected to the pressing part. The pressing part penetrates through the housing 111 to drive the switching part 1161 to move between the initial position and the switching position under the pressing action.

[0055] The switching part 1161 extends outward along a direction perpendicular to the extension direction of the pressing part. In the present invention, the switching part 1161 has two clamping walls 1162 extending toward the switching member 114 and arranged in parallel, and the distance between the two clamping walls 1162 is smaller than the length of the switching member 114 at the first position.

[0056] When the switching button 116 is in the initial position, both clamping walls 1162 are located above the switching member 114, and the switching member 114 is in the first position; when the switching button 116 moves to the switching position under the pressing action, the switching member 114 is clamped between the two clamping walls 1162, and the switching member 114 is in the second position.

[0057] Please refer to Figure 13 and combine with Figure 4As shown, in a preferred embodiment of the present invention, an inclined guide surface 1163 facing the switching member 114 is provided at each end of each clamping wall 1162, and the first switching member 1142 and the second switching member 1143 are provided with abutting surfaces 1146 corresponding to the inclined guide surface 1163; with such a setting, when the switching button 116 is pressed and moved from the initial position to the switching position, the clamping wall 1162 can slide along the inclined guide surface 1163 and the two side walls where the first switching member 1142 and the second switching member 1143 are away from each other under the cooperation of the inclined guide surface 1163 and the abutting surface 1146 and be clamped on both sides in the length direction of the switching member 114.

[0058] Furthermore, limiting structures 1147 are provided on both side walls of the first switching member 1142 and the second switching member 1143 that face away from each other, and the clamping wall 1162 is provided with positioning structures 1164 corresponding to the limiting structures 1147; with such a setting, when the switching button 116 moves to the switching position, the separation of the switching button 116 from the switching member 114 can be effectively prevented, ensuring the stability of the clamping between the switching button 116 and the switching member 114. Preferably, the limiting structure is a limiting groove, and the positioning structure 1164 is a positioning protrusion corresponding to the limiting groove.

[0059] The return button 117 penetrates through the housing 111 to control the switching button 116 to return from the switching position to the initial position through the return rotation shaft 118 under the pressing action. Further, a part of the return rotation shaft 118 is received in the receiving space of the housing 111, including a positioning shaft rotatably fixed in the housing 111 and a first fin and a second fin extending radially outward from the positioning shaft and located on the same plane, and the switching button 116 is provided with a first abutting groove corresponding to the first fin, and the return button 117 is provided with a second abutting groove corresponding to the second fin.

[0060] Specifically, when the switching button 116 is in the initial position, the return rotation shaft 118 is in a freely rotatable state, and the return button 117 can move up and down along its extending direction; and at this time, the switching member 114 is in the first position, the first energy unit and the second energy unit are connected in parallel, and the electrical energy storage system 10 can achieve low-voltage output.

[0061] When the switching button 116 moves from the initial position to the switching position, the first abutting groove drives the first fin to rotate about the positioning shaft, so that the second fin abuts against the second abutting groove to drive the return button 117 and the switching button 116 to move in opposite directions. When the switching button 116 is positioned at the switching position, the switching portion 1161 of the switching button 116 is clamped at both ends of the switching member 114 in the length direction, and the positioning structure 1164 on the clamping wall 1162 is clamped with the limiting structure on the switching member 114 to limit the switching position of the switching button 116 and move the switching component 321 from the first position to the second position; the return button 117 is clamped and positioned between the housing 111 and the end of the second fin. At this time, the switching member 114 is in the second position, the first energy unit and the second energy unit are connected in series, and the electrical energy storage system 10 can achieve high-voltage output.

[0062] Further, when it is necessary to control the switching button 116 to return to the initial position, the return button 117 is pressed. The return button 117 drives the second fin and the first fin to rotate about the positioning shaft through the second abutting groove. The first fin drives the switching button 116 to move from the switching position to the initial position, so that the limiting structure is separated from the positioning structure, and the switching portion 1161 is disengaged from the end of the switching member 114, further causing the switching member 114 to return from the second position to the first position, completing the switching of the coupling state of the electrical energy switching component 113 to the first plug 1121 and the second plug 1122.

[0063] Please refer to Figure 14 , which is a schematic structural diagram of the electrical energy storage system 10' according to the second embodiment of the present invention. In this embodiment, the electrical energy storage system 10' has substantially the same structure as the electrical energy storage system 10, and the difference is only that: the positive electrodes 12a', 13a' and the negative electrodes 12b', 13b' in the first energy unit and the second energy unit are arranged in an up-and-down arrangement.

[0064] Please refer to Figure 15 As shown, which is a schematic structural diagram of the electrical energy storage system 10'' according to the third embodiment of the present invention. In this embodiment, the electrical energy storage system 10'' has substantially the same structure as the electrical energy storage system 10 and the electrical energy storage system 10', and the difference is only that: the positive electrodes 12a'', 13a'' and the negative electrodes 12b'', 13b'' in the first energy unit and the second energy unit are all arranged front and back along the insertion direction of the electrical energy switching devices 11, 11' and the energy unit, and the negative electrodes 12b'', 13b'' are parallel to the positive electrodes 12a'', 13a''.

[0065] Further, in the second and third embodiments, the arrangement form of the plugs in the power switching devices 11 and 11' can be adjusted according to the arrangement form of the positive and negative electrodes in the first energy unit and the second energy unit, as long as it is ensured that when the power switching devices 11 and 11' are in the first position, the first energy unit and the second energy unit are connected in parallel, and when the power switching devices 11 and 11' are in the second position, the first energy unit and the second energy unit are connected in series. That is, the arrangement form of the plugs in the power switching devices 11 and 11' can be adjusted according to the actual situation, and no limitation is imposed herein.

[0066] The present invention also provides a power tool (not shown). The power tool includes a tool body and a power switching device 11 for electrically connecting the tool body and a power supply device.

[0067] In the present invention, the tool body has a plug portion for connecting the power switching device 11, and two connection pieces with opposite polarities are respectively connected to the positive output 1123a and the negative output 1123b with the same polarity in the output terminal 1123 of the power switching device 11 to ensure the normal input of the working voltage.

[0068] In the present invention, if the rated voltage of the power tool is nV, then the power tool can be connected to different power supply devices with energy units having an output voltage of n / 2V or nV through the power switching device 11.

[0069] Specifically, the power tool can be connected to a dual-voltage power supply device or a single-voltage power supply device having two energy units with an output voltage of n / 2V. And in this embodiment, each energy unit with an output voltage of n / 2V has two output electrodes with opposite polarities.

[0070] Further, when the power tool is electrically connected to the dual-voltage power supply device / single-voltage power supply device through the power switching device 11, the power switching device 11 is respectively electrically connected to the output electrodes of the two energy units with an output voltage of n / 2V through the positive terminal 21a and the negative terminal 21b in the first plug 1121 and the positive terminal 1122a and the negative terminal 1122b in the second plug 1122. At this time, the switching button 116 can be used to 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 in the second plug 1122 through the first switching member 1142 and the second switching member 1143; to control the two energy units with an output voltage of n / 2V to be connected in series, and the voltage output by the dual-voltage power supply device or the single-voltage power supply device is nV, meeting the rated voltage of the tool body and ensuring the normal operation of the power tool.

[0071] The power 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.

[0072] Specifically, when the power tool is electrically connected to the dual-voltage power supply device / single-voltage power supply device through the electric energy switching device 11, the switching member 114 can be controlled to move to the first position by the switching button 116 and / or the return button 117. At this time, the positive terminal 1121a of the first plug 1121 is electrically connected to the positive terminal 1122a of the second plug 1122 through the first switching member 1142; the negative terminal 1121b of the first plug 1121 is electrically connected to the negative terminal 1122b of the second plug 1122 through the second switching member 1143; further, 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, meeting the rated voltage of the tool body and ensuring the normal operation of the power tool.

[0073] The power tool can also be connected to a single-voltage power supply device having an energy unit with an output voltage of nV, and the energy unit has two output electrodes with opposite polarities.

[0074] Specifically, when the power tool is electrically connected to the single-voltage power supply device through the electric energy switching device 11, the switching button 116 can be used to control the switching member 114 to move to the second position. At this time, the positive terminal 1122a of the second plug 1122 is electrically connected to the negative terminal 1121b of the first plug 1121 through the first switching member 1142 and the second switching member 1143; further, the electric energy switching device 11 is connected to two terminals with opposite polarities, arranged side by side and closely, in the first plug 1121 and the second plug 1122, such as Figure 4 the positive terminal 1122a of the second plug 1122 and the negative terminal 1121b of the first plug 1121 in the figure are electrically connected to the output electrodes of the energy unit with an output voltage of nV, and a voltage of nV is output, meeting the rated voltage of the tool body and ensuring the normal operation of the power tool.

[0075] Please refer to Figure 16 As shown in the figure, an electric tool system 20 provided by the present invention includes an electric energy storage system 10 and an electric tool 201, where the electric tool 201 is used to perform corresponding work tasks, and the electric energy storage system 10 is used to provide corresponding power for the electric tool 201 to ensure the normal operation of the electric tool system 20.

[0076] In the present invention, the electric tool 201 has a plug 202 for connecting to the electrical energy storage system 10. In the present invention, the electric tool 201 can be either a low-voltage electric tool for receiving low-voltage input or a high-voltage electric tool for receiving high-voltage input.

[0077] Furthermore, the electrical energy storage system 10 completes the switching of the output voltage through the electrical energy switching device 11 provided thereon, so that the electric tool system 20 can be matched with a low-voltage electric tool or a high-voltage electric tool, effectively improving the practicability of the electric tool system 20 of the present invention.

[0078] In summary, the electrical energy switching device 11 of the present invention realizes the output of two different voltages by providing a switching member 114 that can be switched between a first position and a second position and a plug electrically connected to the switching member 114, and by adjusting the coupling form between different plugs. At the same time, it can also make the electric tool with the electrical energy switching device 11 match a variety of power supply devices with different output voltages, effectively increasing the applicable range of the electrical energy storage system 10 / electric tool / electric tool system 20 using the electrical energy switching device 11 and reducing the cost.

[0079] The above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. An electric energy switching device, comprising a plug for connecting to a power supply device, and the plug has an output terminal for outputting electric energy to the outside, characterized in that: It further includes an electric energy switching component electrically connected to the plug-in. The electric energy switching component includes a switching member driven by pressing. The switching member can move between a first position and a second position under the pressing action to switch the coupling form of the plug-in. Among them, the plug-in includes a first plug and a second plug for connecting the power supply device and an output end for connecting the electric tool. When the switching member is in the first position, two terminals with the same polarity in the first plug and the second plug are electrically connected through the switching member and further electrically connected to the terminals with the same polarity in the output end. When the switching member is in the second position, two terminals with different polarities in the first plug and the second plug 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. The electric energy switching component further includes a housing and a control member housed in the housing. The control member is used to control the switching member to move between the first position and the second position, and the control member has an initial position corresponding to the first position and a switching position corresponding to the second position.

2. The power switching device according to claim 1, characterized in that: The control member includes a return button, a switching button penetrating the housing, and a return shaft for connecting the return button and the switching button in a restoring manner, and the return shaft is rotatably fixed in the receiving space of the housing.

3. The power switching device according to claim 2, characterized in that: The return shaft has a rotating shaft rotatably fixed in the housing and fins extending in the radial direction of the rotating shaft. The return button and the switching button are located on both sides of the axis direction of the rotating shaft, and the return button and the switching button are respectively provided with abutting grooves corresponding to the fins.

4. The electric energy switching device according to claim 1, characterized in that: The housing is provided with a switching space for housing the control member and the switching member. The housing is further provided with a rail / groove structure for slidably housing the switching member, and the rail / groove structure is housed in the switching space.

5. A power storage system includes a first energy unit and a second energy unit both having an output voltage of nV, characterized in that: It further includes an electric energy switching device as described in any one of claims 1-4 for connecting two groups of the energy units. The electric energy switching device can switch the series-parallel form of the first energy unit and the second energy unit by pressing to output two different voltages.

6. The electrical energy storage system according to claim 5, characterized in that: Both the first energy unit and the second energy unit have positive and negative electrodes for realizing energy output, and the positive and negative electrodes have at least 3 arrangement structures. The electric energy switching device has a switching member for switching the coupling form of the positive and negative electrodes of the first energy unit and the second energy unit.

7. The electrical energy storage system according to claim 6, characterized in that: The switching member has a first position for connecting the first energy unit and the second energy unit in parallel. When the switching member is in the first position, the switching member realizes the output of 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.

8. The electrical energy storage system according to claim 6, 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 a high voltage of the electrical energy storage system by connecting two electrodes with opposite polarities in the first energy unit and the second energy unit.

9. An electric tool, characterized in that: The power tool uses the electrical energy switching device according to any one of claims 1-4. The power tool cooperates with the electrical energy storage system through the electrical energy switching device so that the output voltage output by the electrical energy storage system can match the rated voltage of the power tool.

10. An electric tool system includes an electric tool and an electrical energy storage system that provides power to the electric tool, characterized in that: The electrical energy storage system is the electrical energy storage system according to any one of claims 5-8. The electrical energy storage system has an electrical energy switching device, and the electrical energy storage system cooperates with the power tool through the electrical energy switching device so that one of the two different output voltages output by the electrical energy storage system can match the rated voltage of the power tool.

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