CN111933837A

CN111933837A - Electric energy switching assembly and tool and system with same

Info

Publication number: CN111933837A
Application number: CN202010186781.3A
Authority: CN
Inventors: 陆春桃; 郭新忠; 严安
Original assignee: Globe Jiangsu Co Ltd
Current assignee: Globe Jiangsu Co Ltd
Priority date: 2020-03-17
Filing date: 2020-03-17
Publication date: 2020-11-13
Anticipated expiration: 2040-03-17
Also published as: CN111933837B

Abstract

The invention provides an electric energy switching assembly, and a tool and a system with the electric energy switching assembly. The electric energy switching device comprises a plug-in unit used for being connected with a power supply device, an electric energy switching assembly electrically connected with the plug-in unit and a control member used for switching the switching member, wherein the plug-in unit is provided with an output end used for outputting electric energy to the outside, the switching member is adjustably connected with the plug-in unit and can be driven by the control member to rotate and switch the connection form of the plug-in unit in a coupling state. The electric energy switching device can realize the switching of two voltages, so that the electric storage 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, effectively increase the application range of the electric energy storage system/the electric tool system using the electric energy switching device, and reduce the cost.

Description

Electric energy switching assembly and tool and system with same

Technical Field

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

Background

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

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

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

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

Disclosure of Invention

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

In order to achieve the above object, the present invention provides an electric energy switching device, which includes a plug-in unit for connecting 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, and the electric energy switching assembly includes a switching member and a control member for controlling the switching member, wherein the switching member is adjustably connected to the plug-in unit, and can be driven by the control member to rotate and switch the connection form of the plug-in unit in a coupling state.

As a further improvement of the present invention, the switching member has at least a first position and a second position which are adjustable, and includes a first switching member connected to the control member and a second switching member respectively connected to the inserts, and the first switching member is driven by the control member to rotate around the axis of the control member as an axis to switch the connection form of the inserts in the coupling state.

As a further improvement of the invention, the first switching member penetrates the control member and has a connection portion for connecting the second switching member and a connection terminal for power transmission.

As a further improvement of the present invention, the first switching member is provided with a plurality of first switching members, the first switching member is provided with at least 2 structures for electrically connecting the second switching member, and the plurality of first switching members are arranged in a staggered manner.

As a further improvement of the present invention, the second switching member has at least two sets of connection terminals for connecting the plug-in unit and a chassis for fixing the connection terminals, one end of each connection terminal is directly/indirectly electrically connected to the plug-in unit, and each connection terminal penetrates through the chassis and is exposed on one side of the chassis close to the control member to be electrically connected to the first switching member.

As a further improvement of the present invention, the second switching members have two sets and are arranged in a vertically offset manner in a direction perpendicular to the chassis.

As a further improvement of the present invention, the control member has a switching button and a trigger connected to the switching button for rotating the first switching member, and the first switching member is disposed on the trigger in a staggered manner.

As a further improvement of the present invention, the triggering portion is provided with a limiting groove, the second switching member is provided with a limiting protrusion corresponding to the limiting groove, and the limiting groove is matched with the limiting protrusion, so that the switching member can rotate between the first position and the second position.

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

As a further improvement of the present invention, the first energy unit and the second energy unit each have a positive electrode and a negative electrode for realizing energy output, and the positive electrode and the negative electrode have at least 3 arrangements, and the electric energy switching device has a switching member for switching a positive electrode coupling form and a negative electrode coupling form 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 tool using the aforementioned electric energy switching device, wherein the electric tool cooperates with an electric energy storage system through the electric energy switching device so that an output voltage output by the electric energy storage system can match a 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 schematic perspective view of an electric energy storage system according to a first embodiment of the invention.

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

Fig. 3 is a schematic structural diagram of the electric energy switching apparatus in fig. 1 from another angle.

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

Fig. 5 is a schematic structural diagram of the power switching assembly in fig. 3.

Fig. 6 is a schematic structural diagram of the power switching module and the plug-in unit in fig. 3.

Fig. 7 is an exploded view of the second switching member of fig. 3.

Fig. 8 is a schematic structural view of the second switching member and the plug-in unit in fig. 3.

Fig. 9 is a circuit configuration diagram of the electric energy storage system.

Fig. 10 is a circuit diagram of the electrical energy storage system when the electrical energy switching device is in the first position.

Fig. 11 is a circuit diagram of the electrical energy storage system when the electrical energy switching device is in the second position.

Fig. 12 is a schematic structural diagram of the electric energy storage system according to the second embodiment of the present invention, with the electric energy switching device and part of the cavity omitted.

Fig. 13 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. 14 is a perspective view of the power tool system of the present invention.

Detailed Description

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

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

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

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

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

positive electrodes

12a, 13a and the

negative electrodes

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

positive electrodes

12a, 13a and the

negative electrodes

12b, 13b have at least 3 arrangements.

Referring to fig. 1 to 7, the power switching device 11 includes a housing 111, a plug 112 accommodated in the housing 111, and a power switching assembly 113 adjustably connected to the plug 112.

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

Specifically, each of the first and

second inserts

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

second inserts

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

second inserts

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

In this embodiment, the positive/

negative terminals

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

second inserts

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

second inserts

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

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

positive terminals

1121a, 1122a and the

negative terminals

1121b, 1122b of the first and

second inserts

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

second inserts

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

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

second plugs

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

second plugs

1121 and 1122. Specifically, switching member 114 is housed in housing 111, and is rotatable within housing 111 and movable between a first position and a second position by control member 115 to further adjust the coupling form of first insert 1121 and second insert 1122.

The switching member 114 includes a first switching member 1141 connected to the control member 115 and a second switching member 1142 electrically connected to the plug-in 112, wherein the first switching member 1141 is driven by the control member 115 to rotate around the axis of the control member 115 to switch the connection mode of the plug-in 112 in the coupling state.

Referring to fig. 3 to 7, the first switching member 1141 penetrates the control member 115 and has a connecting portion (not numbered) for connecting the second switching member 1142 and a transmitting portion (not numbered) for transmitting electric energy. The connection portion is exposed from the lower surface of the control member 115 to be electrically connected with the second switching member 1142; the transmission portion protrudes outward from the upper surface of the control member 115 to be electrically connected to the output terminal 1123, and realizes transmission of electric power.

Further, a plurality of first switching members 1141 are simultaneously disposed, and a plurality of first switching members 1141 are disposed on the control member 115 in a staggered manner, so as to electrically connect different plugs 112 to complete switching of the coupling form of the first plug 1121 and the second plug 1122; in the present invention, the first switching member 1141 has at least 2 structures for electrically connecting the second switching member 1142, in a preferred embodiment of the present invention, the first switching member 1141 has a first switching member 1141a with a connecting portion disposed in an oval shape and a first switching member 1141b with a connecting portion disposed in a circular shape, and an extending height of a transmission portion of the first switching member 1141a is higher than an extending height of a transmission portion of the first switching member 1141b, so that the extending portions of the first switching member 1141a and the first switching member 1141b are disposed in a vertically staggered manner, and output of electrical energy is realized through the output end 1123.

The second switching member 1142 has a connection terminal 1143 for connecting the plug 112, a chassis 1144 for fixing the connection terminal 1143, and a supporting portion 1145 for supporting the connection terminal 1143 and the chassis 1144, wherein one end of the connection terminal 1143 is electrically connected to the plug 112, and the other end thereof penetrates the chassis 1144 and is exposed on a side of the chassis 1144 close to the first switching member 1141 to be electrically connected to the first switching member 1141.

In this embodiment, the connection terminal 1143 has a first connection terminal 1143a, a second connection terminal 1143b, a third connection terminal 1143c and a fourth connection terminal 1143d which are vertically staggered in a direction perpendicular to the chassis 1144, and 4 connection terminals 1143 are electrically connected to the positive terminal 1121a, the negative terminal 1121b, the positive terminal 1122a and the negative terminal 1122b, respectively; further, each connection terminal 1143 has 2 contacts (not numbered) penetrating through the chassis 1144 and exposed on a side of the chassis 1144 close to the first switching member 1141, and the contacts on different connection terminals 1143 are arranged in a staggered manner.

Further, the supporting portions 1145 are uniformly distributed at the bottom of the chassis 1144, in this embodiment, the chassis 1144 is a circular disc, and the number of the supporting portions 1145 is 6 at the same time, and the supporting portions are uniformly arranged along the circumference of the chassis 1144, so as to support the chassis 1144 and enable the connecting terminal 1143 to be electrically connected with the plug 112.

The control member 115 has a switching button 116 penetrating the housing 111 and a trigger 117 housed in the housing 111; and the triggering portion 117 is connected to the switching button 116 to rotate the switching member 114 connected to the triggering portion 117.

In the present invention, the switch button 116 is provided in a cylindrical shape, the trigger portion 117 is integrally formed with the switch button 116, the first switching member 1141 is connected to the trigger portion 117, and the first switching member 1141a and the first switching member 1141b are provided on the trigger portion 117 in a staggered manner. In this embodiment, the trigger 117 and the chassis 1144 are both arranged in a circular plate shape, further, the trigger 117 is provided with a limit groove 1171, the chassis 1144 of the second switching member 1142 is provided with a limit protrusion 1146 arranged corresponding to the limit groove 1171, the limit protrusion 1146 is accommodated in the limit groove 1171 and can slide in the limit groove 1171 to limit the moving position and distance of the first switching member 1141, so as to control the first switching member 1141 to switch between the first position and the second position and further ensure the stable connection between the first switching member 1141 and the connection terminal 1143 in the second switching member 1142, further, the trigger 117 is further provided with a clamping portion 1172 fixedly clamped with the housing 111, and the control member 115 is rotatably connected with the housing 111 through the clamping portion 1172 so as to limit the rotating position of the switching button 116.

Further, the control member 115 of the present invention has 3 switching positions, including a first position and a second position for connecting the first plug-in 1121, the second plug-in 1122 and the output terminal 1123 to realize the power output and an initial position for making each plug-in 112 of the power switching device 11 in the off state.

Specifically, when the power switching device 11 is in the initial position, any one of the first switching members 1141 cannot be connected to different plugs 112 simultaneously, and there is no coupling relationship between the first plug 1121 and the second plug 1122; the first energy unit and the second energy unit are in an open circuit state, and the electric energy storage system has no energy output.

When the electric energy switching device 11 is in the first position, the first switching member 1141 is driven by the trigger 117 to rotate on the chassis 1144, and the

positive terminals

1121a and 1122a and the

negative terminals

1121b and 1122b are coupled and connected by the connection portion and the connection terminal 1143; referring to fig. 8, 9 and 10, when the electric energy switching device 11 is in the first position, the contacts of the first connection terminal 1143a and the third connection terminal 1143c are electrically connected to the

positive terminals

1121a and 1122a through the first switching member 1141a, and the second connection terminal 1143b and the fourth connection terminal 1144d are electrically connected to the

negative terminals

1121b and 1122b through the other first switching member 1141a, at this time, the first energy unit and the second energy unit are connected in parallel through the switching member 114, and further realize energy output through the positive output 1123a and the negative output 1123b of the output terminal 1123.

When the electric energy switching device 11 is in the second position, the first switching member 1141 is driven by the trigger 117 to rotate on the chassis 1144, and the

positive terminals

1121a and 1122a and the

negative terminals

1121b and 1122b are coupled and connected by the connection portion and the connection terminal 1143; referring to fig. 8, 9 and 11, when the electric energy switching device 11 is at the second position, the contact points of the second connection terminal 1143b and the third connection terminal 1143c are electrically connected to the positive terminal 1122a and the negative terminal 1121b through the first switching member 1141 a; the contact of the first connection terminal 1143a is electrically connected to the positive terminal 1121a and the positive output 1123a through the second switching member 1141; the contact of the fourth connection terminal 1143d is electrically connected to the negative terminal 1122b and the negative output 1123b through the second switching member 1141, and at this time, the first energy unit and the second energy unit are connected in series through the switching member 114, and further output of energy is realized through the output terminal 1123.

Fig. 12 is a schematic structural diagram of an electric energy storage system according to a second embodiment of the present invention. In the present embodiment, the electrical energy storage system has substantially the same structure as the electrical energy storage system described above, and the difference is only 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. 13 is a schematic structural diagram of an electric energy storage system according to a third embodiment of the present invention. The electric energy storage system in the present embodiment is different from the foregoing electric energy storage system 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 device 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 embodiment and the third embodiment, the arrangement form of the plug-in 112 in the electric energy switching device 11 may be adjusted according to the arrangement form of the positive electrode and the negative electrode 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 device 11 is in the first position, and the first energy unit and the second energy unit are connected in series when the electric energy switching device 11 is in the second position, that is, the arrangement form of the plug-in 112 in the electric energy switching device 11 may be adjusted according to actual situations, 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, the plug portion has two connection pads with opposite polarities, and the two connection pads 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 1121a and the negative terminal 1121b of the first plug 1121 and the positive terminal 1122a and the negative terminal 1122b of the second plug 1122, respectively, and at this time, the switching member 114 can be 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 switching member 114; the two energy units with the output voltage of n/2V are controlled to be connected in series, the voltage output by the double-voltage power supply device or the single-voltage power supply device is nV, the rated voltage of the tool main body is met, and the normal operation of the electric tool is ensured.

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

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

Referring to fig. 14, an electric tool system 20 provided by the present invention includes an electric energy storage system and an electric tool 201, wherein the electric tool 201 is used for performing corresponding work tasks, and the electric energy storage system is used for providing corresponding electric power to the electric tool 201 to ensure the normal operation of the electric tool system 20.

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

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

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

In summary, in the electric energy switching apparatus 11 of the present invention, the switching member 114 capable of switching between the first position and the second position and the plug 112 electrically connected to the switching member 114 are arranged, and by adjusting the coupling form between different plugs, the electric energy storage system using the electric energy switching apparatus 11 can realize output of 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, the application range of an electric energy storage system/an electric tool system 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, includes the plug-in components that are used for connecting power supply unit, just the plug-in components have to the external output that carries out electric energy output, its characterized in that: the power switching assembly is electrically connected with the plug-in, and comprises a switching component and a control component for controlling the switching component, wherein the switching component is adjustably connected with the plug-in, and can be driven by the control component to rotate and switch the connection form of the plug-in a coupling state.

2. The electrical energy switching apparatus of claim 1, wherein: the switching member at least has a first position and a second position which can be adjusted, and comprises a first switching member connected with the control member and second switching members respectively connected with the plug-in units, wherein the first switching member can rotate by taking the axis of the control member as an axis under the driving of the control member so as to switch the connection form of the plug-in units in a coupling state.

3. The electrical energy switching apparatus of claim 2, wherein: the first switching member penetrates the control member, and has a connecting portion for connecting the second switching member and a connection terminal for transmitting electric energy.

4. The electrical energy switching apparatus of claim 3, wherein: the first switching member is provided with a plurality of structures simultaneously, the first switching member is provided with at least 2 structures for electrically connecting the second switching member, and the first switching members are arranged in a staggered manner.

5. The electrical energy switching apparatus of claim 2, wherein: the second switching member is provided with at least two groups of connecting terminals for connecting the plug-in unit and a chassis for fixing the connecting terminals, one ends of the connecting terminals are directly/indirectly electrically connected with the plug-in unit, and each connecting terminal penetrates through the chassis and is exposed on one side, close to the control member, of the chassis so as to be electrically connected with the first switching member.

6. The electrical energy switching apparatus of claim 5, wherein: the second switching components are provided with two groups and are arranged in a vertically staggered mode in the direction perpendicular to the chassis.

7. The electric energy switching member according to claim 2, wherein: the control component is provided with a switching button and a triggering part which is connected to the switching button and used for driving the first switching component to rotate, and the first switching component is arranged on the triggering part in a staggered mode.

8. The electrical energy switching apparatus of claim 7, wherein: the trigger part is provided with a limiting groove, the second switching component is provided with a limiting bulge which is correspondingly arranged with the limiting groove, and the limiting groove is matched with the limiting bulge so that the switching component can rotate between a first position and a second position.

9. 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 is provided with a first position and a second position which are switched by rotation, and can switch the series-parallel connection form of the first energy unit and the second energy unit by changing the positions so as to output two different voltages.

10. An electrical energy storage system according to claim 9, wherein: the first energy unit and the second energy unit are provided with a positive electrode and a negative electrode which are used for realizing energy output, the positive electrode and the negative electrode are at least provided with 3 arrangements, and the electric energy switching device is provided with a switching member which is used for switching the positive electrode coupling form and the negative electrode coupling form of the first energy unit and the second energy unit.

11. An electrical energy storage system according to claim 10, 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.

12. An electrical energy storage system according to claim 10, 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.

13. An electric power tool characterized in that: the electric tool uses the electric energy switching device of any one of claims 1 to 8, 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.

14. 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 9 to 12, 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.