CN111262107A

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

Info

Publication number: CN111262107A
Application number: CN202010187354.7A
Authority: CN
Inventors: 陆春桃; 韦律; 严安
Original assignee: Changzhou Globe Co Ltd
Current assignee: Changzhou Globe Co Ltd
Priority date: 2020-03-17
Filing date: 2020-03-17
Publication date: 2020-06-09

Abstract

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

Description

Electric energy switching component, tool with electric energy switching component and system

Technical Field

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

Background

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

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

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

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

Disclosure of Invention

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

In order to achieve the above object, the present invention provides an electric energy switching device, which includes a plug-in unit for connecting to a power supply device, wherein the plug-in unit has an output end for outputting electric energy to the outside, and further includes an electric energy switching assembly electrically connected to the plug-in unit, wherein the electric energy switching assembly includes a switching member driven by a pressing force, and the switching member is movable between a first position and a second position under the pressing force to switch a coupling form of the plug-in unit.

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

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

As a further improvement of the present invention, the electric power switching assembly further includes a housing and a control member housed in the housing, the control member being for controlling the switching member to move between a first position and a second position, and the control member having an initial position disposed corresponding to the first position and a switching position disposed corresponding to the second position.

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

As a further improvement of the present invention, the rotating shaft has a rotating shaft rotatably fixed in the housing and a fin extending in a radial direction of the rotating shaft, the return button and the switch button are located on two sides of the rotating shaft in an axial direction, and the return button and the switch button are respectively provided with a holding groove corresponding to the fin.

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

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

As a further improvement of the present invention, the first energy unit and the second energy unit are both provided with a positive electrode and a negative electrode for realizing energy output, and the positive electrode and the negative electrode have at least 3 arrangements; the electric energy switching device has a switching means for switching the positive and negative electrode coupling forms of the first energy unit and the second energy unit.

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

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

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

In order to achieve the above object, the present invention provides an electric tool system, which includes an electric tool and an electric energy storage system for providing electric power to the electric tool, wherein the electric energy storage system is the above electric energy storage system, the electric energy storage system has an electric energy switching device, and the electric energy storage system is matched with the electric tool through the electric energy switching device, so that one of two different output voltages output by the electric energy storage system can match a rated voltage of the electric tool. ,

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

Drawings

Fig. 1 is a perspective view of an electrical energy storage system according to the present invention.

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

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

Fig. 4 is an exploded view of the power switching device of fig. 1.

Fig. 5 is an exploded view of the switching member of fig. 4.

Fig. 6 is a schematic view of a combination structure of the power switching module and the plug-in unit when the power switching device is in the first position.

Fig. 7 is a schematic view of the assembly structure of fig. 6 with the elastic member omitted.

Fig. 8 is a schematic view of the connection structure of the plug-in unit when the power switching device is in the first position.

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

Fig. 10 is a schematic view of the combination structure of the power switching assembly and the plug-in unit when the power switching device is in the second position and the elastic member is omitted.

Fig. 11 is a schematic view of the connection structure of the plug-in unit when the power switching device is in the second position.

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

Fig. 13 is a partially enlarged view of fig. 4 at a position where the switching portion and the switching member are connected.

Fig. 14 is a schematic structural diagram of the electric energy storage system according to the second embodiment of the invention, with the electric energy switching device and part of the cavity omitted.

Fig. 15 is a schematic structural diagram of an electric energy switching device and a part of the cavity in the electrical energy storage system according to an embodiment of the present invention.

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

Detailed Description

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

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

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

Referring to fig. 1 and fig. 2, an electrical energy storage system 10 according to the present invention is provided, in which the electrical energy storage system 10 includes a first energy unit (not numbered), a second energy unit (not numbered), and an electrical energy switching device 11 for outputting electrical energy.

In the invention, the voltage of the first energy unit and the second energy unit is nV, and the first energy unit is provided with a positive electrode 12a and a negative electrode 12b for outputting electric energy; the second energy unit has a positive electrode 13a and a negative electrode 13b for outputting electric energy; further, the electrical energy storage system 10 further includes a cavity 14 for accommodating the first energy unit and the second energy unit, the

positive electrodes

12a, 13a and the

negative electrodes

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

positive electrodes

12a, 13a and the

negative electrodes

12b, 13b have at least 3 arrangements.

Referring to fig. 1 to 4, the electric energy switching device 11 is inserted into the cavity 14 and electrically connected to the first energy unit and the second energy unit through the positive electrode and the negative electrode, and the electric energy switching device 11 has a first position and a second position, and when the electric energy switching device 11 is switched between the first position and the second position, the series-parallel connection mode of the first energy unit and the second energy unit can be switched, so that the electric energy storage system 10 outputs two different voltages.

The power switching device 11 has a housing 111, a plug 112 received in the housing 111, and a power switching assembly 113 adjustably connected to the plug 112. The housing 111 is provided with an accommodation space (not numbered) for accommodating the plug 112 and the power switching assembly 113. The plug 112 includes a first plug 1121 and a second plug 1122 for electrically connecting the first energy unit and the second energy unit, and an output end 1123 for outputting electric energy, and the first plug 1121, the second plug 1122, and the output end 1123 are all connected and installed in the accommodating space.

Further, each of the first and

second inserts

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

second inserts

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

second inserts

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

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 row and inserted into each other in a one-to-one correspondence, and the electrodes/terminals with opposite polarities are arranged in a staggered manner. Further, the output end 1123 is disposed substantially parallel to the first plug-in 1121 and the second plug-in 1122, and is disposed on two different sidewalls of the housing 111; so as to facilitate the connection of the first plug-in 1121, the second plug-in 1122 and the output terminal 1123.

Referring to fig. 5 in conjunction with fig. 4, the power switching assembly 113 includes a switching member 114 and a control member 115. In the present invention, the switching member 114 is used for electrically connecting 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 accommodated in the housing 111, and the housing 111 is provided with a rail/chute structure (not shown) for accommodating the switching member 114, and the switching member 114 is slidably connected in the rail/chute structure and can move between a first position and a second position along the rail/chute structure under the action of the control member 115, and further adjusts the coupling form of the first plug-in component 1121 and the second plug-in component 1122.

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

The second switching member 1143 has substantially the same structure as the first switching member 1142, that is, the second switching member 1143 has a second connection terminal 1145 and a projection (not numbered) provided toward the first switching member 1142, and the second connection terminal 1145 also has a third connection portion 1145a for connecting the first and/or

second plugs

1121 and 1122 and a fourth connection portion 1145b extending toward the first switching member 1142 for connecting the first switching member 1142. Preferably, the first connection terminal 1144 and the second connection terminal 1145 are integrally formed and respectively coated on the outer walls of the first switching member 1142 and the second switching member 1143 in an "L" shape.

Specifically, the elastic member 1141 is connected between the first switching member 1142 and the second switching member 1143 by a protrusion. Referring to fig. 6 and 7, when the elastic member 1141 is defined in the natural extension state, the switching member 114 is at the first position; when the switching member 114 is in the first position, the first connection portion 1144a of the first connection terminal 1144 is electrically connected to the

positive terminals

1121a, 1122a of the first and

second plugs

1121, 1122 so that the

positive electrodes

12a, 13a of the first and second energy units are electrically connected; the negative terminals 21b and 22b of the first and

second inserts

1121 and 1122 are electrically connected through the third connection portion 1145a of the second switching member 1143, so that the

negative electrodes

12b and 13b of the first and second energy units are electrically connected; at this time, the second connecting portion 1144b and the fourth connecting portion 1145b are separated from each other (as shown in fig. 3).

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

Referring to fig. 10 in combination with fig. 6, when the elastic member 1141 is compressed under the control of the control member 115, and the switching member 114 is located at the second position, when the switching member 114 is located at the second position, the second connecting portion 1144b of the first switching member 1142 is connected to the fourth connecting portion 1145b of the second switching member 1143, so that the first switching member 1142 and the second switching member 1143 are connected to form an electrically conductive whole through the second connecting portion 1144b and the fourth connecting portion 1145b, two terminals of the first insert 1121 and the second insert 1122 with opposite polarities and adjacent to each other are electrically connected through the first switching member 1142 and the second switching member 1143, that is, at this time, the first connecting portion 1144a is separated from the positive terminal 1121a of the first insert 1121, the third connecting portion 1145a is separated from the terminal 1122b of the second insert 1122, and the negative terminal 114b and the positive terminal 114a of the adjacent to each other are separated from the positive terminal of the first insert 1121 through the first connecting portion 4a, The third connecting portion 1145a and the combination of the second connecting portion 1144b and the fourth connecting portion 1145b are electrically connected.

Further, the positive output 1123a of the output port 1123 is electrically connected to the positive terminal 1121a through an electrical connection structure such as a wire; the negative output 1123b is electrically connected to the negative terminal 1122b via an electrical connection structure such as a wire; so that the first energy unit and the second energy unit are connected in series and output of a high voltage (i.e., 2nV) is achieved through the output terminal 1123 (as shown in fig. 11 and 12).

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

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

The switch 1161 is formed to extend outward in a direction perpendicular to the extending direction of the pressing part, in the present invention, the switch 1161 has two catching walls 1162 extending toward the switch member 114 and arranged parallel to each other, and the distance between the two catching walls 1162 is smaller than the length of the switch member 114 at the first position.

When the switch button 116 is in the initial position, both catch walls 1162 are located above the switch member 114, the switch member 114 being in the first position; when the switch button 116 is moved to the switching position by being pressed, the switching member 114 is caught between the two catching walls 1162, and the switching member 114 is in the second position.

Referring to fig. 13 in combination with fig. 4, in a preferred embodiment of the present invention, an inclined guide surface 1163 is disposed at an end of each holding wall 1162 and facing the switching member 114, and the first switching member 1142 and the second switching member 1143 have an abutting surface 1146 corresponding to the inclined guide surface 1163; with this arrangement, when the switch button 116 is pushed to move from the initial position to the switching position, the holding wall 1162 can slide along the inclined guide surface 1163 and the two side walls of the first switching member 1142 and the second switching member 1143 away from each other under the cooperation of the inclined guide surface 1163 and the abutting surface 1146 and can be held at two sides of the switching member 114 in the length direction.

Furthermore, the two side walls of the first switching member 1142 and the second switching member 1143 facing away from each other are both provided with a limiting structure 1147, and the retaining wall 1162 is provided with a positioning structure 1164 corresponding to the limiting structure 1147, so as to effectively prevent the switching button 116 from being separated from the switching member 114 when the switching button 116 moves to the switching position, and ensure the stability of retaining 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 disposed corresponding to the limiting groove.

A return button 117 extends through the housing 111 to control the return of the switch button 116 from the switch position to the initial position by a pivot shaft 118 upon actuation. Furthermore, the rotating shaft 118 is partially accommodated in the accommodating space of the housing 111, and includes a positioning shaft rotatably fixed in the housing 111, and a first fin and a second fin extending outward from the radial direction of the positioning shaft and located on the same plane, the switch button 116 is provided with a first abutting groove corresponding to the first fin, and the return button 117 is provided with a second abutting groove corresponding to the second fin.

Specifically, when the switching button 116 is in the initial position, the rotary shaft 118 is in a free rotation state, and the return button 117 is movable up and down in the extending direction thereof; 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 electric energy storage system 10 can achieve the output of the low voltage.

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

Further, when the switching button 116 needs to be controlled 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 around 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, the switching portion 1161 is separated from the end portion of the switching member 114, the switching member 114 further returns to the first position from the second position, and the switching of the coupling state of the first plug-in component 1121 and the second plug-in component 1122 by the power switching assembly 113 is completed.

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

Fig. 15 is a schematic structural diagram of an electric energy storage system 10 ″ according to a third embodiment of the present invention. In the present embodiment, the electrical energy storage system 10 ″ has substantially the same structure as the electrical energy storage system 10 and the electrical energy storage system 10', and is different only in that: the positive electrodes 12a ", 13 a" and the negative electrodes 12b ", 13 b" in the first energy unit and the second energy unit are arranged in front and back along the plugging direction of the electric energy switching devices 11, 11' and the energy units, and the negative electrodes 12b ", 13 b" are parallel to the positive electrodes 12a ", 13 a" of the 1 st energy unit.

Further, in the second and third embodiments, the arrangement of the inserts 112 in the electric energy switching devices 11 and 11 'may be adjusted according to the arrangement of the positive and negative electrodes in the first energy unit and the second energy unit, and it is only required to ensure that the first energy unit and the second energy unit are connected in parallel when the electric energy switching devices 11 and 11' are in the first position, and the first energy unit and the second energy unit are connected in series when the electric energy switching devices 11 and 11 'are in the second position, that is, the arrangement of the inserts 112 in the electric energy switching devices 11 and 11' may be adjusted according to actual conditions, which is not limited herein.

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

In the present invention, the tool body has a plug portion for connecting the power switching device 11, and two connecting 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, so as to ensure the normal input of the operating voltage.

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

Specifically, the power tool may be connected to a dual voltage power supply device or a single voltage power supply device having two energy cells with an output voltage of n/2V, and in the present embodiment, each energy cell with an output voltage of n/2V has two output electrodes with opposite polarities.

Further, when the electric power tool is electrically connected to the dual voltage power supply/single voltage power supply through the electric power switching device 11, the electric power switching device 11 is electrically connected to the output electrodes of the two energy units with output voltage of n/2V through the positive terminal 21a and the negative terminal 21b of the first plug 1121 and the positive terminal 1122a and the negative terminal 1122b of the second plug 1122, and at this time, the switching member 114 is controlled by the switching button 116 to move to the second position, so that the negative terminal 1121b of the first plug 1121 is electrically connected to the positive terminal 1122a of the second plug 1122 through the first switching member 1142 and the second switching member 1143; the two energy units with the output voltage of n/2V are controlled to be connected in series, the voltage output by the double-voltage power supply device or the single-voltage power supply device is nV, the rated voltage of the tool main body is met, and the normal operation of the electric tool is ensured.

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

Specifically, when the power tool is electrically connected to the dual voltage power supply/single voltage power supply through the power switching device 11, the switching member 114 can be controlled by the switching button 116 and/or the return button 117 to move to the first position, and at this time, the positive electrode terminal 1121a of the first plug-in component 1121 is electrically connected to the positive electrode terminal 1122a of the second plug-in component 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 via the second switching member 1143; and furthermore, two energy units with the output voltage of nV are connected in parallel, the voltage output by the double-voltage power supply device or the single-voltage power supply device is controlled to be nV, the rated voltage of the tool main body is met, and the normal operation of the electric tool is ensured.

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

Specifically, when the power tool is electrically connected to the single voltage power supply device through the power switching device 11, the switching button 116 controls the switching member 114 to move to the second position, and at this time, the positive terminal 1122a of the second plug-in 1122 is electrically connected to the negative terminal 1121b of the first plug-in 1121 through the first switching member 1142 and the second switching member 1143; further, the electric energy switching device 11 is electrically connected to the output electrode of the energy unit with the output voltage of nV through two terminals of the first plug-in component 1121 and the second plug-in component 1122, which have opposite polarities and are disposed side by side and close to each other, such as the positive terminal 1122a of the second plug-in component 1122 and the negative terminal 1121b of the first plug-in component 1121 in fig. 4, and outputs the voltage of nV, so as to satisfy the rated voltage of the tool body and ensure the normal operation of the electric tool.

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

In the present invention, the power tool 201 has a plug 202 for connecting the electric energy storage system 10, and in the present invention, the power tool 201 may be a low-voltage power tool for receiving a low-voltage input; or a high voltage electric tool for receiving a high voltage input.

Further, the electric energy storage system 10 completes the switching of the output voltage through the electric energy switching device 11 disposed thereon, so that the electric tool system 20 can match with a low voltage electric tool or a high voltage electric tool, and the practicability of the electric tool system 20 of the present invention is effectively improved.

In summary, in the electric energy switching apparatus 11 of the present invention, by providing the switching member 114 capable of switching between the first position and the second position and the plug-in 112 electrically connected to the switching member 114, the coupling form between different plug-ins 112 is adjusted, so that the electric energy storage system 10 using the electric energy switching apparatus 11 can output two different voltages; meanwhile, the electric tool with the electric energy switching device 11 can be matched with various power supply devices with different output voltages, so that the application range of the electric energy storage system 10/the electric tool system 20 using the electric energy switching device 11 is effectively enlarged, and the cost is reduced.

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

Claims

1. An electric energy switching device, comprising a plug-in unit for connecting a power supply unit and having an output terminal for outputting electric energy to the outside, characterized in that: the power switching assembly comprises a switching member driven by pressing, and the switching member can move between a first position and a second position under the action of pressing to switch the coupling form of the plug-in unit.

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

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

4. The electrical energy switching apparatus of claim 1, wherein: the electric energy switching assembly further comprises a housing and a control member accommodated in the housing, the control member is used for controlling the switching member to move between a first position and a second position, and the control member has an initial position corresponding to the first position and a switching position corresponding to the second position.

5. The electrical energy switching apparatus of claim 4, wherein: the control component comprises a return button, a switching button and a rotating shaft, wherein the return button penetrates through the shell, the rotating shaft is used for connecting the return button and the switching button in a return mode, and the rotating shaft is rotationally fixed in the accommodating space of the shell.

6. The electrical energy switching apparatus of claim 5, wherein: the return button and the switching button are positioned on two sides of the axis direction of the rotating shaft, and the return button and the switching button are respectively provided with a butting groove corresponding to the fin.

7. The electrical energy switching apparatus of claim 4, wherein: the housing is provided with a switching space for accommodating the control member and the switching member, and the housing is further provided with a rail/chute structure for slidably accommodating the switching member, and the rail/chute structure is accommodated in the switching space.

8. An electrical energy storage system comprising a first energy unit and a second energy unit having output voltages of nV, characterized in that: the electric energy switching device can be used for switching the series-parallel connection mode of the first energy unit and the second energy unit through pressing so as to output two different voltages.

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

10. An electrical energy storage system according to claim 9, wherein: the switching member has a first position for connecting the first energy unit and the second energy unit in parallel, and when the switching member is located at the first position, the switching member realizes the output of the low voltage of the electric energy storage system by respectively connecting the electrodes with the same polarity in the first energy unit and the second energy unit.

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

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

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