CN114336846B

CN114336846B - Battery pack installation system, power supply system and electric tool system

Info

Publication number: CN114336846B
Application number: CN202111639387.1A
Authority: CN
Inventors: 陆春桃; 严安; 霍晓辉
Original assignee: Globe Jiangsu Co Ltd
Current assignee: Globe Jiangsu Co Ltd
Priority date: 2021-12-29
Filing date: 2021-12-29
Publication date: 2024-08-20
Anticipated expiration: 2041-12-29
Also published as: CN114336846A

Abstract

The invention provides a battery pack mounting system, a power supply system and an electric tool system, wherein the battery pack mounting system comprises: the battery pack comprises a shell, a terminal part, an input end, an output end and a switching structure, wherein the terminal part is arranged on the shell and matched with the battery pack; the input end is electrically connected with the terminal part; the switching structure is arranged in the shell and is electrically connected with the output end; the output end is used for outputting energy to the outside; when the switching structure is at the first position, the output end is configured to output a first voltage; when the switching structure is at the second position, the output end is configured to output a second voltage. The invention is used for solving the problem that only one output voltage is provided due to the unique connection circuit between the prior battery packs.

Description

Battery pack installation system, power supply system and electric tool system

Technical Field

The invention relates to the field of power supply of electric tools, in particular to a battery pack mounting system, a power supply system and an electric tool system.

Background

The electric devices and equipment such as gardening tools, electric tools and home appliances are often equipped with independent power supplies. However, the internal circuit connection relationship is fixed for the existing battery pack, that is, the series or parallel circuit connection between the battery packs is fixed, so that the power supply source can only provide one output voltage. This results in the need to reconfigure the power supply when the serial or parallel connection relationship between the battery packs needs to be replaced, which is time consuming and labor intensive and causes great inconvenience to the user.

Disclosure of Invention

In view of the above drawbacks of the prior art, the present invention provides a battery pack mounting system, a power supply system and an electric tool, which are capable of improving the problem of having only one output voltage due to the unique connection circuit between the existing battery packs.

To achieve the above and other related objects, the present invention provides a battery pack mounting system comprising: the battery pack comprises a shell, a terminal part, an input end, an output end and a switching structure, wherein the terminal part is arranged on the shell and matched with the battery pack; the input end is electrically connected with the terminal part; the output end is used for outputting energy to the outside; the switching structure is arranged in the shell and is electrically connected with the output end; when the switching structure is at the first position, the output end is configured to output a first voltage; when the switching structure is at the second position, the output end is configured to output a second voltage.

In one embodiment of the invention, the battery pack mounting system further comprises a strap, and the housing is mounted on the strap.

In one embodiment of the present invention, a first battery pack chamber, a second battery pack chamber and a third battery pack chamber are provided on the housing; the terminal portion includes: the first inserting piece seat, the second inserting piece seat and the third inserting piece seat; the first inserting sheet seat is arranged in the first battery pack cavity; the second inserting sheet seat is arranged in the second battery pack cavity; the third inserting sheet seat is arranged in the third battery pack cavity; the input end is electrically connected with the first inserting sheet seat, the second inserting sheet seat and the third inserting sheet seat respectively.

In an embodiment of the present invention, the input terminal includes a first input terminal and a second input terminal; the switching structure comprises a first switching part and a second switching part; when the switching structure is at a first position, the first switching part is electrically connected with the first input end, the second switching part is disconnected with the second input end, and the output end is configured to output a first voltage; when the switching structure is at the second position, the second switching part is electrically connected with the second input end, the first switching part is disconnected with the first input end, and the output end is configured to output a second voltage.

In one embodiment of the invention, the single-cell battery pack can output a voltage to the outside, and a single-cell battery pack terminal is arranged on the single-cell battery pack and comprises a positive electrode terminal and a negative electrode terminal; the double-voltage battery pack can output two types of voltages to the outside, a double-voltage battery pack terminal is arranged on the double-voltage battery pack, and the double-voltage battery pack terminal comprises two positive electrode terminals and two negative electrode terminals; the first inserted sheet seat and single battery package terminal phase-match, the second inserted sheet seat and single battery package terminal phase-match, the third inserted sheet seat and double battery package terminal phase-match.

In an embodiment of the present invention, the first insert seat is electrically connected to the first input end, the first insert seat is electrically connected to the second input end, the second insert seat is electrically connected to the first input end, the second insert seat is electrically connected to the second input end, the third insert seat is electrically connected to the first input end, and the third insert seat is electrically connected to the second input end.

In one embodiment of the invention, the connection terminals of the first switching part are matched with the connection terminals of the first input end, and the connection terminals of the second switching part are matched with the connection terminals of the second input end.

In one embodiment of the present invention, the switching structure includes: a support body and a slide bar; the support body is fixedly connected with the slide bar; the first switching part is arranged on one side of the supporting body, and the second switching part is arranged on the other side of the supporting body.

In an embodiment of the present invention, the switching structure further includes: and the resetting piece is arranged on the sliding rod.

The invention also provides a power supply system, comprising: the battery pack comprises a shell, a terminal part, a battery pack, an input end, an output end and a switching structure; wherein, the terminal part is arranged on the shell; the battery pack is arranged in the shell and is electrically connected with the terminal part; the input end is electrically connected with the terminal part; the output end is used for outputting energy to the outside; the switching structure is arranged in the shell and is electrically connected with the output end; when the switching structure is at the first position, the output end outputs a first voltage; when the switching structure is at the second position, the output end outputs a second voltage.

In one embodiment of the present invention, a battery pack includes: a dual battery pack.

In one embodiment of the present invention, a voltage pack includes: two single-voltage battery packs.

In one embodiment of the present invention, a voltage pack includes: two single-voltage battery packs and one double-voltage battery pack.

In one embodiment of the present invention, a voltage pack includes: a single-voltage battery pack and a double-voltage battery pack.

The present invention also provides a power tool system comprising: the battery pack comprises a shell, a terminal part, a battery pack, an input end, an output end, a switching structure, an adapter, a first tool and a second tool; wherein, the terminal part is arranged on the shell; the battery pack is arranged in the shell and is electrically connected with the terminal part; the input end is electrically connected with the terminal part; the output end is used for outputting energy to the outside; the switching structure is arranged in the shell and is electrically connected with the output end; when the switching structure is at the first position, the output end outputs a first voltage; when the switching structure is at the second position, the output end outputs a second voltage; the adapter is provided with an adapter interface, and the adapter is configured to be electrically connected with the output end; the first tool is provided with a first tool interface, and the adapter is electrically connected with the first tool when the first tool interface is combined with the adapter interface; the second tool is provided with a second tool interface, and the adapter is electrically connected with the second tool when the second tool interface is combined with the adapter interface; the first tool and the second tool have different operating voltages.

In one embodiment of the present invention, the power tool system further includes a power cord configured to electrically connect the adapter with the output.

In one embodiment of the present invention, the electric tool system further includes a plug socket, on which a plug part and a push-pull part are disposed, the plug part being configured to electrically connect the output end with the adapter; the push-pull part is sleeved on the plug-in part, and a push block for changing the position of the switching structure is arranged in the push-pull part; the push-pull part is provided with a pressing piece and a limiting piece, and the limiting piece is arranged on the pressing piece.

In one embodiment of the invention, the patch cord seat is provided at an end of the power cord.

In an embodiment of the present invention, the pressing member is further provided with a first identification area and a second identification area.

In one embodiment of the present invention, the working voltage of the first tool is a first voltage, and the working voltage of the second tool is a second voltage.

According to the battery pack mounting system, the shell is used for mounting the battery pack, the terminal part is used for being electrically connected with the battery pack, and when the positions of the switching structures are different, the output end can be configured to output different voltages, so that the output end can be configured to output two voltages. The battery pack mounting system has the advantages of simple structure, convenience in implementation, easiness in operation and the like. Meanwhile, the battery pack mounting system can provide two different output voltages to the outside after the battery pack is placed in the battery pack mounting system, so that tools with two different working voltages are met, the application range of the power supply system is enlarged, and the problem that the existing power supply can only output one voltage is effectively solved.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is an assembly view of the overall structure of a battery pack mounting system of the present invention;

fig. 2 is a structural exploded view of the battery pack mounting system of the present invention;

fig. 3 is a front view of the battery pack mounting system of the present invention;

FIG. 4 is a top view of the battery pack mounting system of the present invention;

fig. 5 is a schematic view of the structure of the terminal portion of the present invention;

fig. 6 is a schematic structural view of a single-voltage battery pack according to the present invention;

FIG. 7 is a schematic view of a dual voltage battery pack according to the present invention;

FIG. 8 is a schematic view of a first insert seat according to the present invention;

FIG. 9 is a schematic diagram of a second insert seat according to the present invention;

FIG. 10 is an assembly view of the switching structure and the mounting base of the present invention;

FIG. 11 is a top view of the switching structure and mounting base of the present invention;

FIG. 12 is an exploded view of the switching structure and mounting base of the present invention;

FIG. 13 is an exploded view of the switching structure of the present invention;

FIG. 14 is a schematic diagram of a connection circuit of the present invention;

fig. 15 is a schematic circuit diagram of the case where the battery pack is two single-voltage battery packs;

FIG. 16 is a schematic diagram of the circuit of FIG. 15 outputting a first voltage;

FIG. 17 is a schematic diagram of the circuit of FIG. 15 outputting a second voltage;

FIG. 18 is a schematic circuit diagram of a battery pack of a dual voltage battery pack;

FIG. 19 is a schematic diagram of the circuit of FIG. 18 outputting a first voltage;

FIG. 20 is a schematic diagram of the circuit of FIG. 18 outputting a second voltage;

FIG. 21 is a schematic circuit diagram of a battery pack of a single battery pack and a dual battery pack;

FIG. 22 is a schematic diagram of the circuit of FIG. 21 outputting a first voltage;

FIG. 23 is a schematic circuit diagram of the output of FIG. 21 for a second voltage;

FIG. 24 is a schematic circuit diagram of a battery pack of two single voltage battery packs and a dual voltage battery pack;

FIG. 25 is a schematic diagram of the circuit of FIG. 24 outputting a first voltage;

FIG. 26 is a schematic diagram of the circuit of FIG. 24 outputting a second voltage;

Fig. 27 is a schematic structural view of a patch cord holder according to the present invention;

fig. 28 is a schematic diagram illustrating the connection between the patch board and the housing according to the present invention;

FIG. 29 is a schematic view of the harness and the first power tool of the present invention;

fig. 30 is a schematic view of the back strap and the second electric tool of the present invention.

Description of element reference numerals

100. A battery pack mounting system; 110. a housing; 111. a first battery pack chamber; 112. a second battery pack chamber; 113. a third battery pack chamber; 114. an upper housing; 115. a lower housing; 116. a third limiting member; 120. a terminal portion; 1210. a first insert seat; 1211. a first terminal; 1212. a second terminal; 1220. a second insert seat; 1230. a third insert seat; 1231. a third terminal; 1232. a fourth terminal; 130. an input end; 131. a first input; 132. a second input terminal; 140. an output end; 150. a switching structure; 151. a first switching section; 152. a second switching section; 153. a support body; 154. a slide bar; 155. a reset member; 160. a PCB board; 170. a wire; 180. a mounting seat 181 and a chute; 190. a harness; 200. a battery pack; 210. a single cell battery pack; 211. a single voltage battery pack terminal; 220. a dual-voltage battery pack; 221. a dual voltage battery pack terminal; 300. a power line; 310. a plug wire seat; 3110. a plug-in part; 3120. a push-pull part; 3121. a pushing block; 3122. a pressing member; 3123. a limiting piece; 3124. a first identification area; 3125. a second identification area; 400. an adapter; 500. a first tool; 600. a second tool.

Detailed Description

Other advantages and effects of the present invention will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present invention with reference to specific examples. The invention may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present invention. It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict. It is also to be understood that the terminology used in the examples of the invention is for the purpose of describing particular embodiments only, and is not intended to limit the scope of the invention. The test methods in the following examples, in which specific conditions are not noted, are generally conducted under conventional conditions or under conditions recommended by the respective manufacturers.

It should be understood that the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like are used in this specification for descriptive purposes only and not for purposes of limitation, and that the invention may be practiced without materially departing from the novel teachings and without departing from the scope of the invention.

Referring to fig. 1 to 3, the present invention provides a battery pack mounting system 100, the battery pack mounting system 100 comprising: the battery pack comprises a shell 110, a terminal part 120, an input end 130, an output end 140 and a switching structure 150, wherein the terminal part 120 is arranged on the shell 110 and matched with the battery pack; the input terminal 130 is electrically connected to the terminal portion 120; the switching structure 150 is disposed in the housing 110 and electrically connected to the output terminal 140; the switching structure 150 may be located at the first position or the second position; when the switching structure 150 is in the first position, the output terminal 140 may be configured to output the first voltage, that is, the output terminal 140 outputs the first voltage after the battery pack is mounted in the housing 100; when the switching structure 150 is in the second position, the output terminal 140 may be configured to output the second voltage, i.e., the second voltage is output from the output terminal after the battery pack 200 is installed in the housing 110; the first voltage is different from the second voltage. The battery pack mounting system 100 may further include a strap 190, with the housing 110 removably mounted to the strap 190. The user carries the battery pack mounting system 100 by carrying the harness.

Referring to fig. 4 to 5, in an embodiment of the present invention, a first battery pack 111, a second battery pack 112 and a third battery pack 113 are disposed on a housing 110; the terminal portion 120 includes: the first insert seat 1210, the second insert seat 1220 and the third insert seat 1230; the first tab holder 1210 is disposed in the first battery pack cavity 111; the second tab holder 1220 is disposed in the second battery pack cavity 112; the third insert seat 1230 is disposed in the third battery pack cavity 113; the input end 130 is electrically connected to the first insert holder 1210, the second insert holder 1220 and the third insert holder 1230, respectively.

Referring to fig. 6 to 7, in an embodiment of the present invention, a first battery pack chamber 111 is used for installing a single voltage battery pack 210; the second battery pack chamber 112 is used for installing a single-voltage battery pack 210; the third battery pack chamber 113 is used to mount a dual battery pack 220. The single-voltage battery pack 210 is a battery pack capable of outputting only one voltage, the single-voltage battery pack 210 is provided with a single-voltage battery pack terminal 211, and the single-voltage battery pack terminal 211 includes: a positive terminal and a negative terminal. The dual voltage battery pack 220 is a battery pack capable of providing two output voltages to the outside, and the dual voltage battery pack 220 is provided with a dual voltage battery Bao Duanzi and a dual voltage battery pack terminal including two positive terminals and two negative terminals.

Referring to fig. 8 to 9, in an embodiment of the present invention, a first insert holder 1210 is matched with a battery pack terminal 211, a second insert holder 1220 is matched with the battery pack terminal 211, and a third insert holder 1230 is matched with a dual battery Bao Duanzi. Referring to fig. 5 to 6, the first insert holder 1210 has a structure identical to that of the second insert holder 1220, and two first terminals 1211 and two second terminals 1212 are disposed on the first insert holder 1211 and the second terminals 1212, the first terminals 1211 are electrically connected to the second terminals 1212, the first terminals 1211 are matched to the single-cell package terminals 211, and the second terminals 1212 are electrically connected to the input terminals 130. The third insert holder 1230 is provided with four third terminals 1231 and four fourth terminals 1232, the third terminals 1231 are electrically connected to the fourth terminals 1232, the third terminals 1231 are matched with the dual-voltage battery pack terminals, and the fourth terminals 1232 are electrically connected to the input terminal 130.

Referring to fig. 10 to 11, in an embodiment of the invention, the input terminal 130 includes a first input terminal 131 and a second input terminal 132; the switching structure 150 includes a first switching portion 151 and a second switching portion 152; when the switching structure 150 is at the first position, the first switching portion 151 is electrically connected to the first input terminal 131, and the second switching portion 152 is disconnected from the second input terminal 132, and the output terminal 140 is configured to output a first voltage; when the switching structure 150 is at the second position, the second switching portion 152 is electrically connected to the second input terminal 132, and the first switching portion 151 is disconnected from the first input terminal 131, so that the output terminal 140 is configured to output the second voltage.

Referring to fig. 11 to 13, the first switching unit 151 is formed of a plurality of terminals, and the number of terminals is identical to that of the first input terminal 131. The second switching unit 152 is composed of a plurality of terminals, and the number of terminals is identical to that of the second input terminal 132.

The number of connection terminals of the first input terminal 131 is the sum of the number of terminals of the second terminal 1212 and the fourth terminal 1232. The number of connection terminals of the second input terminal 132 is the sum of the numbers of the second terminal 1212 and the fourth terminal 1232. For example, the first insert holder 1210 has two second terminals 1212, the second insert holder 1220 has two second terminals 1212, and the third insert holder 1230 has four fourth terminals 1232, so the number of terminals of the first input terminal 131 is 8, and the number of terminals of the second input terminal 131 is 8. Therefore, the first switching unit 151 is configured with eight connection terminals, and the second switching unit 151 is configured with eight switching terminals.

Referring to fig. 5 and 11, in an embodiment of the present invention, two second terminals 1212 of the first insert holder 1210 are respectively labeled as: 1+,1-, the two second terminals 1212 of the second blade holder 1220 are labeled: 2+,2-; the four fourth terminals 1232 of the third insert holder 1230 are labeled: 3+,4+,4-,3-. Eight terminals of the first input 131 are labeled 131a, 131b, 131c, 131d, 131e, 131f, 131g, 131h, respectively; the one-to-one correspondence relationship among the 131a terminal, the 131b terminal, the 131c terminal, and the 131d terminal is not limited, and the 1+ terminal, the 2+ terminal, the 3+ terminal, and the 4+ terminal are electrically connected, for example, in an embodiment of the present invention, the 131a terminal is electrically connected to the 1+ terminal, the 131b terminal is electrically connected to the 3+ terminal, the 131c terminal is electrically connected to the 4+ terminal, and the 131d terminal is electrically connected to the 2+ terminal. The 131e terminal, the 131f terminal, the 131g terminal and the 131h terminal are electrically connected with the 1-terminal, the 2-terminal, the 3-terminal and the 4-terminal in one-to-one correspondence, the specific correspondence in one-to-one correspondence is not limited, for example, in one embodiment of the invention, the 131e terminal is electrically connected with the 1-terminal, and the 131f terminal is electrically connected with the 4-terminal; the 131g terminal is electrically connected with the 3-terminal; the 131h terminal is electrically connected to the 2-terminal.

Referring to fig. 11, eight terminals of the second input end 132 are labeled 132a, 132b, 132c, 132d, 132e, 132f, 132g, 132h, respectively. The terminals 132a, 132b, 132c, 132d, 132e, 132f, 132g, 132h are electrically connected to the 1+ terminal, the 3+ terminal, the 1-terminal, the 4+ terminal, the 3-terminal, the 2+ terminal, the 4-terminal, and the 2-terminal in one-to-one correspondence, and the correspondence in the one-to-one correspondence may be any one of the possible embodiments that can achieve the technical effects of the present invention and achieve the purposes of the present invention. In one embodiment of the present invention, the 132a terminal is electrically connected to the 1+ terminal, the 132b terminal is electrically connected to the 3+ terminal, the 132c terminal is electrically connected to the 1-terminal, the 132d terminal is electrically connected to the 4+ terminal, the 132e terminal is electrically connected to the 3-terminal, the 132f terminal is electrically connected to the 2+ terminal, the 132g terminal is electrically connected to the 4-terminal, and the 132h terminal is electrically connected to the 2-terminal.

Referring to fig. 11 to 13, eight connection terminals of the first switching section 151 are respectively denoted as 151a, 151b, 151c, 151d, 151e, 151f, 151g, 151h; the 151a terminal arrangement is electrically connected to the 131a terminal, the 151b terminal arrangement is electrically connected to the 131b terminal, the 151c terminal arrangement is electrically connected to the 131c terminal, the 151d terminal arrangement is electrically connected to the 131d terminal, the 151e terminal arrangement is electrically connected to the 131e terminal, the 151f terminal arrangement is electrically connected to the 131f terminal, the 151g terminal arrangement is electrically connected to the 131g terminal, and the 151h terminal arrangement is electrically connected to the 131h terminal. The eight connection terminals of the first switching unit 151 may be electrically connected to each other in any manner that can achieve the object and achieve the effect of the present invention. In one embodiment of the present invention, the terminals 151a, 151b, 151c, and 151d are electrically connected to each other and to the positive terminal of the output terminal 140; the 151e, 151f, 151g, and 151h terminals are electrically connected to each other and to the negative terminal of the output terminal 140.

Referring to fig. 11 to 13, eight connection terminals of the second switching section 152 are labeled 152a, 152b, 152c, 152d, 152e, 152f, 152g, 152h, respectively; wherein, 152a terminal configuration is electrically connected with 132a terminal, 152b terminal configuration is electrically connected with 132b terminal, 152c terminal configuration is electrically connected with 132c terminal, 152d terminal configuration is electrically connected with 132d terminal, 152e terminal configuration is electrically connected with 132e terminal, 152f terminal configuration is electrically connected with 132f terminal, 152g terminal configuration is electrically connected with 132g terminal, 152h terminal configuration is electrically connected with 132h terminal. The eight connection terminals of the second switching unit 152 may be electrically connected to each other in any manner that achieves the object and effect of the present invention. The terminal 152a is electrically connected to the terminal 152b and to the positive terminal of the output terminal, the terminals 152c, 152d, 152e, and 152f are electrically connected, and the terminal 152g is electrically connected to the terminal 152h and to the negative terminal of the output terminal.

For convenience of processing, the terminals 151a, 151b, 151c, and 151d in the first switching part 151 may be integrally formed and made of an electric conductor. The terminals 151e, 151f, 151g, and 151h of the first switching section 151 are integrally formed and made of an electric conductor. The terminals 152a and 152b of the second switching portion 152 may be integrally formed, the terminals 152c, 152d, 152e, and 152f may be integrally formed, and the terminals 152g and 152h may be integrally formed, each of which is made of an electrical conductor.

Note that, the marks of the terminals in the above embodiments are only for descriptive purposes, and are not intended to be limiting.

Referring to fig. 5 and 14, in an embodiment of the invention, the first insert holder 1210 and the first input end 131, the first insert holder 1210 and the second input end 132, the second insert holder 1220 and the first input end 131, the second insert holder 1220 and the second input end 132, the third insert holder 1230 and the first input end 131, and the third insert holder 1230 and the second input end 132 are electrically connected through the wires 170.

Referring to fig. 2 to 4, the housing 110 includes an upper housing 114 and a lower housing 115, the lower housing 115 is mounted at the bottom of the upper housing 114, and the first battery pack 111, the second battery pack 112 and the third battery pack 113 are disposed inside the upper housing 114. The wires 170 may be integrated on a PCB (Printed Circuit Board printed circuit board) board, and the PCB board 160 is fixed inside the lower case 115 and outside the upper case 114.

In one embodiment of the present invention, the terminal of the first switching part 151 matches the terminal of the first input terminal 131, and the terminal of the second switching part 152 matches the terminal of the second input terminal 132. The terminal may be a terminal or a contact. The types or kinds of the connection terminals of the first input terminal 131 and the second input terminal 132 are not limited, and may be identical or not identical; the types and types of the terminals of the first switching unit 151 and the second switching unit 152 are not limited, and they may be identical or not.

In order to simplify the manufacturing process, in an embodiment of the present invention, the terminal types of the connection terminals of the first input end 131 and the second input end 132 are identical, for example, the connection terminals of the first input end 131 and the second input end 132 are female terminals, and the first switching portion 151 and the second switching portion 152 are male terminals; or the connection terminals of the first input end 131 and the second input end 132 are male terminals, and the first switching part 151 and the second switching part 152 are female terminals; or the connection terminal of the first input end 131 and the connection terminal of the second input end 132 are first contacts, and the connection terminal of the first switching part 151 and the connection terminal of the second switching part 152 are second contacts, and the first contacts are matched with the second contacts.

Referring to fig. 10 and 12, in an embodiment of the invention, the battery pack mounting system 100 further includes a mounting base 180, and the switching structure 150 is disposed in the mounting base 180. The switching structure 150 includes: a support 153 and a slide bar 154; the mounting seat 180 is provided with a chute 181, the slide bar 154 is arranged in the chute 181, the slide bar 154 can slide in the chute 181, and the support body 153 is fixedly connected with the slide bar 154; the first switching unit 151 is provided on one side of the support 153, and the second switching unit 152 is provided on the other side of the support 153. The mount 180 is fixed in the lower housing 115 or on the PCB 160.

Referring to fig. 10 to 12, in an embodiment of the present invention, the switching structure 150 further includes: the reset piece 155, the reset piece 155 is arranged on the slide bar 154 and is positioned in the slide groove 181. The reset member 155 may be a spring, which is sleeved on the periphery of the sliding rod and is located at one side of the supporting body away from the output end.

In one embodiment of the present invention, the initial position of the switching structure 150 is the first position. When in use, the sliding rod 154 is pushed, so that the supporting body 153 drives the first switching part 151 and the second switching part 152 to move, and the second switching part 152 contacts the second input end 132, and the output end is configured to output a second voltage. When the pushing force of the sliding rod 154 disappears, the spring returns the switching structure 150 to the first position by virtue of the return elastic force, and the first switching part 151 contacts the first input end 131, so that the output end configuration outputs the first voltage.

Referring to fig. 2, the present invention further provides a power supply system, which includes the battery pack mounting system 100 according to any of the above embodiments and the battery pack 200 mounted in the battery pack mounting system 100. For example, a power supply system includes: the battery pack comprises a shell 110, a terminal part 120, a battery pack 200, an input end 130, an output end 140 and a switching structure 150, wherein the terminal part 120 is arranged on the shell 110; the battery pack 200 is mounted in the case 100 and electrically connected to the terminal part 120; the input terminal 130 is electrically connected to the terminal portion 120; the output terminal 140 is used for outputting energy to the outside; the switching structure 150 is disposed in the housing 110 and electrically connected to the output terminal 140; the switching structure 150 may be located at a first position and a second position; when the switching structure 150 is in the first position, the output terminal 140 outputs a first voltage; when the switching structure 150 is in the second position, the output terminal 140 outputs a second voltage; the first voltage is different from the second voltage.

Referring to fig. 3, 6, 7, and 15 to 17, in an embodiment of the present invention, a battery pack 200 includes: two single-voltage battery packs 210. The positive and negative terminals of the battery pack terminals 211 of the two battery packs 210 are connected to the 1+ terminal, the 2+ terminal, the 1-terminal, and the 2-terminal in one-to-one correspondence. Fig. 15 is a schematic circuit diagram of two single-cell packs inserted therein.

Referring to fig. 16, when the switching structure 150 is in the first position, the first switching portion 151 is electrically connected to the first input terminal 131, at this time, the terminal 151a is electrically connected to the 1+ terminal via the terminal 131a, the terminal 151d is electrically connected to the 2+ terminal via the terminal 131d, the terminal 151e is electrically connected to the 1-terminal via the terminal 131e, and the terminal 151h is electrically connected to the 2-terminal via the terminal 131 h. Meanwhile, the terminals 151a and 151d are electrically connected with the positive terminal of the output terminal, respectively, and the terminals 151e and 151h are electrically connected with the negative terminal of the output terminal, respectively, so that the two single-cell packages are connected in parallel, and the output terminal outputs a first voltage, namely a parallel voltage.

Referring to fig. 17, when the switching structure 150 is in the second position, the second switching portion 152 is electrically connected to the second input terminal 132, at this time, the 152a terminal is electrically connected to the 1+ terminal via the 132a terminal, the 152c terminal is electrically connected to the 1-terminal via the 132c terminal, the 152f terminal is electrically connected to the 2+ terminal via the 132f terminal, the 152h terminal is electrically connected to the 2-terminal via the 132h terminal, and at the same time, the 152c terminal is electrically connected to the 152f terminal, the 152a terminal is electrically connected to the positive terminal of the output terminal, and the 152h terminal is electrically connected to the negative terminal of the output terminal, so that the two single-cell packages are connected in series, and the output terminal outputs the second voltage, i.e., the series voltage.

Referring to fig. 3, 6, 7, and 18 to 20, in one embodiment of the present invention, a battery pack 200 includes: a dual battery pack 220. The two positive terminals of the dual battery Bao Duanzi are connected to the 3+ terminal, the 4+ terminal, the 3-terminal, and the 4-terminal in one-to-one correspondence with the two negative terminals. Fig. 18 is a schematic circuit diagram of the dual voltage battery pack inserted therein.

Referring to fig. 11 to 13, and fig. 19, when the switching structure 150 is in the first position, the first switching structure 151 is electrically connected to the first input terminal 131. At this time, the terminal 151b is electrically connected to the 3+ terminal via the terminal 131b, the terminal 151c is electrically connected to the 4+ terminal via the terminal 131c, the terminal 151g is electrically connected to the 3-terminal via the terminal 131g, the terminal 151f is electrically connected to the 4-terminal via the terminal 131f, the terminals 151b and 151c are respectively electrically connected to the positive terminal of the output terminal, and the terminals 151g and 151f are respectively electrically connected to the negative terminal of the output terminal, so that two sets of battery cells in the dual battery pack are connected in parallel, and the output terminal outputs a first voltage, that is, a parallel voltage.

Referring to fig. 11 to 13, and fig. 20, when the switching structure 150 is in the second position, the second switching portion 152 is electrically connected to the second input end 132. At this time, the 152b terminal is electrically connected to the 3+ terminal via the 132b terminal, the 152e terminal is electrically connected to the 3-terminal via the 132e terminal, the 152d terminal is electrically connected to the 4+ terminal via the 132d terminal, and the 152g terminal is electrically connected to the 4-terminal via the 132g terminal. Meanwhile, the 152b terminal is electrically connected to the positive terminal of the output terminal, the 152e terminal is electrically connected to the 152d terminal, and the 152g terminal is electrically connected to the negative terminal of the output terminal. Therefore, two battery units in the double-voltage battery pack are connected in series, and the output end outputs a second voltage, namely, a series voltage.

Referring to fig. 3, 5 to 7, and 21 to 23, in one embodiment of the present invention, a battery pack 200 includes: a single-voltage battery pack 210 and a double-voltage battery pack 220, wherein the single-voltage battery pack 210 is installed on the first insert seat 1210 or the second insert seat 1220, and the double-voltage battery pack 220 is installed on the third insert seat 1230. Taking the example that the single-battery pack 210 is mounted on the second insert seat 1220, the positive terminal of the single-battery pack terminal 211 is connected with the 2+ terminal, the negative terminal of the single-battery pack terminal 211 is connected with the 2-terminal, and the two positive terminals and the two negative terminals of the double-battery Bao Duanzi are connected with the 3+ terminal, the 4+ terminal, the 3-terminal and the 4-terminal in a one-to-one correspondence. Fig. 21 is a schematic circuit diagram of a single-voltage battery pack and a double-voltage battery pack inserted therein.

Referring to fig. 11 to 13 and 22, when the switching structure 150 is in the first position, the first switching portion 151 is electrically connected to the first input terminal 131, at this time, the 151b terminal is electrically connected to the 3+ terminal via the 131b terminal, the 151c terminal is electrically connected to the 4+ terminal via the 131c terminal, the 151d terminal is electrically connected to the 2+ terminal via the 131d terminal, the 151g terminal is electrically connected to the 3-terminal via the 131g terminal, the 151f terminal is electrically connected to the 4-terminal via the 131f terminal, the 151h terminal is electrically connected to the 2-terminal via the 131h terminal, and at the same time, the 151b terminal and the 151c terminal 151d terminal are respectively electrically connected to the positive terminal of the output terminal, and the 151f terminal, the 151g terminal and the 151h terminal are respectively electrically connected to the negative terminal of the output terminal, so that the two battery cells in the single-voltage battery pack and the dual-voltage battery pack are connected in parallel to each other, and the first voltage is outputted.

Referring to fig. 11 to 13, and fig. 23, when the switching structure 150 is in the second position, the second switching portion 152 is electrically connected to the second input end 132. At this time, the 152b terminal is electrically connected to the 3+ terminal via the 132b terminal, the 152e terminal is electrically connected to the 3-terminal via the 132e terminal, the 152d terminal is electrically connected to the 4+ terminal via the 132d terminal, the 152g terminal is electrically connected to the 4-terminal via the 132g terminal, the 152f terminal is electrically connected to the 2+ terminal via the 132f terminal, and the 152h terminal is electrically connected to the 2-terminal via the 132h terminal. Meanwhile, the terminal 152b is electrically connected to the positive terminal of the output terminal, the terminals 152e, 152d, and 152f are electrically connected, and the terminals 152g and 152h are electrically connected to the negative terminal of the output terminal, respectively. Therefore, one of the two battery cells (the battery cell electrically connected to the 4+ terminal and the 4-terminal) in the dual battery pack is connected in parallel with the single battery pack and then connected in series with the other battery cell, and the output terminal outputs a second voltage, i.e., a series voltage.

Referring to fig. 3, 6, 7, and 24 to 26, in one embodiment of the present invention, a battery pack 200 includes: two single-voltage battery packs 210 and a double-voltage battery pack 220, wherein the two single-voltage battery packs 210 are respectively a first single-voltage battery pack and a second single-voltage battery pack. The two battery cells in the dual voltage battery pack 220 are a first battery cell and a second battery cell, respectively. The positive electrode terminal and the negative electrode terminal of the single-voltage battery pack terminal of the first single-voltage battery pack are electrically connected with the 1+ terminal and the 1-terminal in a one-to-one correspondence. The positive electrode terminal and the negative electrode terminal of the single-voltage battery pack terminal of the second single-voltage battery pack are electrically connected with the 2+ terminal and the 2-terminal in a one-to-one correspondence mode. The positive electrode terminal and the negative electrode terminal of the double-voltage battery pack terminal are electrically connected with the 3+ terminal, the 4+ terminal, the 3-terminal and the 4-terminal in a one-to-one correspondence manner. For example, the positive electrode terminal and the negative electrode terminal of the first battery cell are correspondingly connected with a 3+ terminal and a 3-terminal; the positive electrode terminal and the negative electrode terminal of the second battery unit are correspondingly and electrically connected with the 4+ terminal and the 4-terminal. Fig. 24 is a schematic circuit diagram of two single-voltage battery packs and one double-voltage battery pack.

Referring to fig. 11 to 13, and fig. 25, when the switching structure 150 is in the first position, the first switching portion 151 is electrically connected to the first input terminal 131, at this time, the 151a terminal is electrically connected to the 1+ terminal via the 131a terminal, the 151b terminal is electrically connected to the 3+ terminal via the 131b terminal, the 151c terminal is electrically connected to the 4+ terminal via the 131c terminal, the 151d terminal is electrically connected to the 2+ terminal via the 131d terminal, the 151e terminal is electrically connected to the 1-terminal via the 131e terminal, the 151f terminal is electrically connected to the 4-terminal via the 131f terminal, the 151g terminal is electrically connected to the 3-terminal via the 131g terminal, and the 151h terminal is electrically connected to the 2-terminal via the 131h terminal. Meanwhile, the terminals 151a, 151b, 151c, and 151d are electrically connected to the positive terminal of the output terminal, respectively, and the terminals 151e, 151f, 151g, and 151h are electrically connected to the negative terminal of the output terminal, respectively, so that the first single-voltage battery pack, the second single-voltage battery pack, the first battery cell, and the second battery cell are connected in parallel with each other, and the output terminal outputs a first voltage, i.e., a parallel voltage.

Referring to fig. 11 to 13, and fig. 26, when the switching structure 150 is in the second position, the second switching portion 152 is electrically connected to the second input end 132. At this time, the 152a terminal is electrically connected to the 1+ terminal via the 132a terminal, the 152c terminal is electrically connected to the 1-terminal via the 132c terminal, the 152f terminal is electrically connected to the 2+ terminal via the 132f terminal, the 152h terminal is electrically connected to the 2-terminal via the 132h terminal, the 152b terminal is electrically connected to the 3+ terminal via the 132b terminal, the 152e terminal is electrically connected to the 3-terminal via the 132e terminal, the 152d terminal is electrically connected to the 4+ terminal via the 132d terminal, and the 152g terminal is electrically connected to the 4-terminal via the 132g terminal. Meanwhile, the terminals 152a and 152b are electrically connected to the positive terminal of the output terminal, respectively, the terminals 152c, 152d, 152e, and 152f are electrically connected to each other, and the terminals 152g and 152h are electrically connected to the negative terminal of the output terminal, respectively. Thus, the first single-cell battery pack is connected in parallel with the first battery cell and is named a first parallel circuit; the second single-voltage battery pack is connected with the second battery unit in parallel and is named as a second parallel circuit, the first parallel circuit and the second parallel circuit are connected in series, and the output end outputs a second voltage, namely a series voltage.

Referring to fig. 1 and 2, the present invention also provides a power supply system, which is obtained by installing an adapter on the basis of the power supply system in any of the above embodiments, for example, the power supply system includes: the battery pack includes a case 110, a terminal part 120, a battery pack 200, an input terminal 130, an output terminal 140, a switching structure 150, and an adapter 400. Wherein the terminal portion 120 is disposed on the housing 110; the battery pack 200 is mounted in the case 100 and electrically connected to the terminal part 120; the input terminal 130 is electrically connected to the terminal portion 120; the output end is used for outputting energy to the outside; the switching structure 150 is disposed in the housing 110 and electrically connected to the output terminal 140; the switching structure 150 may be located at a first position and a second position; when the switching structure 150 is in the first position, the output terminal 140 may be configured to output the first voltage, that is, when the battery pack is mounted in the housing, the output terminal 140 outputs the first voltage; when the switching structure 150 is in the second position, the output terminal 140 may be configured to output the second voltage, i.e. the output terminal outputs the second voltage after the battery pack is mounted in the housing 110; the first voltage is different from the second voltage. The adapter 400 is configured to be electrically connected to the output terminal 140, and an adapter interface is provided on the adapter 400, and the adapter interface is configured to be electrically connected to the power tool.

Referring to FIG. 2, in one embodiment of the present invention, the power tool system further includes a power cord 300, wherein the power cord 300 is configured to electrically connect the adapter 400 with the output terminal. The power cord 300 may be a separate wire independent of the adapter 400 or may be a wire provided on the adapter 400.

Referring to fig. 27, in an embodiment of the present invention, the power supply system further includes a wire socket 310, where the wire socket 310 is configured to connect with the output terminal 140; the plug wire holder 310 is provided with a plug part 3110 and a push-pull part 3120, the plug part 3110 is configured to electrically connect the output end 140 with the adapter 400, a wire connection terminal matched with the output end 140 is arranged in the plug part 3110, the push-pull part 3120 is sleeved on the plug part 3110, and a push block 3121 for changing the position of the switching structure 150 is arranged in the push-pull part 3120; the push-pull portion 3120 is provided with a pressing member 3122 and a stopper member 3123, and the stopper member 3123 is provided on the pressing member 3122.

Referring to fig. 27, in an embodiment of the invention, the push-pull portion 3120 can slide on the plug portion 3110, and the limiting member 3123 includes a first limiting member and a second limiting member, and the first limiting member and the second limiting member are set up on the surface of the pressing member 3122 in parallel.

Referring to fig. 27 and 28, the initial position of the switching structure 150 is a first position, the pressing member 3122 is pressed, the terminal in the plug portion 3110 is aligned with the terminal of the output terminal 140 according to the positive and negative positions, and then the plug portion 3110 and the push-pull portion 3120 are pushed, so that the terminal in the plug portion 3110 is electrically connected with the terminal of the output terminal 140, and the first limiting member passes over the third limiting member 116 to release the pressing member 3122, so that the first limiting member 3123 and the third limiting member 116 disposed on the housing 110 are engaged with each other, thereby firmly fixing the switching structure 150 in the first position, and the output terminal 140 can stably output the first voltage.

When the second voltage needs to be connected, the pressing member 3122 is pressed, so that the push-pull portion 3120 is further pushed, and the push block 3121 pushes the slide rod 154 to slide, and when the switching structure 150 moves to the second position, the pressing member 3122 is released, so that the second limiting member and the third limiting member 116 are engaged, and the switching structure 150 is firmly fixed at the second position, and the output end 140 can stably output the second voltage.

When the output voltage of the output terminal 140 needs to be changed from the second voltage to the first voltage, the push-pull portion 3120 is moved outward by pressing the pressing member 3122, and the sliding rod 154 is moved outward under the restoring force of the spring, so that the switching structure 150 is moved from the second position to the first position, and the output terminal outputs the first voltage.

When the patch cord holder 310 needs to be pulled out, the pressing portion 3123 is pressed down, so that the first or second stopper is separated from the third stopper 116, so that the patch cord holder 310 is smoothly pulled out.

Referring to fig. 27, in an embodiment of the invention, the pressing member 3123 is further provided with a first identification area 3124 and a second identification area 3125, and the output end 140 outputs the first voltage when the first identification area 3124 is adjacent to the output end 140, and the output end 140 outputs the second voltage when the second identification area 3125 is adjacent to the output end 140. The first identification area 3124 is used to identify the first voltage, for example, a voltage value of the first voltage is identified in the first identification area 3124; the second identification region 3125 is used to identify the second voltage, for example, a voltage value of the second voltage is identified in the second identification region 3125.

Referring to fig. 27 and 28, in an embodiment of the invention, the pressing member 3122 is a spring, the first limiting member or the second limiting member is a limiting protrusion, the third limiting member is a limiting block, and the limiting protrusion is matched with the limiting block.

Referring to fig. 1, in an embodiment of the present invention, a patch cord holder 310 is a part of a power cord 300, and the patch cord holder 310 is disposed at an end of the power cord 300. The wires inside the power line 300 are electrically connected to the terminal terminals inside the insertion and extraction part 3110, and the insertion and extraction part 3110 may be integrally formed with the end of the power line 300.

Referring to fig. 1, 2, 29 and 30, the present invention further provides an electric tool system, which is obtained by adding a first tool 500 and a second electric tool 600 to the power supply system in any of the above embodiments. For example, the power tool system includes: a case 110, a terminal part 120, a battery pack 200, an input terminal 130, an output terminal 140, a switching structure 150, an adapter 400, a first tool 500, and a second tool 600; wherein the terminal portion 120 is disposed on the housing 110; the battery pack 200 is installed in the case 100 and electrically connected to the terminal part 120, and the battery pack can externally supply two voltages; the input terminal 130 is electrically connected to the terminal portion 120; the switching structure 150 is disposed in the housing 110 and electrically connected to the output terminal 140; the switching structure 150 may be located at a first position and a second position; when the switching structure 150 is in the first position, the output terminal 140 may be configured to output the first voltage, that is, the output terminal 140 outputs the first voltage after the battery pack 200 is installed in the housing 110; when the switching structure 150 is in the second position, the output terminal 140 may be configured to output the second voltage, i.e., the second voltage is output from the output terminal after the battery pack 200 is installed in the housing 110; the first voltage is different from the second voltage. The adapter 400 is provided with an adapter interface, and the adapter 400 is configured to be electrically connected with the output end 140; the first tool 500 is provided with a first tool interface, and the adapter 400 is electrically connected with the first tool 500 when the first tool interface is combined with the adapting interface; the second tool 600 is provided with a second tool interface, and the adapter 400 is electrically connected with the second tool 600 when the second tool interface is combined with the adapting interface; the operating voltage of the first tool 500 is different from that of the second tool 600.

In one embodiment of the present invention, the working voltage of the first tool 500 is a first voltage, and the working voltage of the second tool 600 is a second voltage.

In the battery pack mounting system of the present invention, the housing 110 is used for mounting the battery pack, the terminal portion 120 is used for electrically connecting with the battery pack 200, and when the positions of the switching structures 150 are different, the output voltages which the output terminal 140 can be configured to output are also different, so that it is realized that the output terminal 140 can be configured to output two voltages. The battery pack mounting system has the advantages of simple structure, convenience in implementation, easiness in operation and the like. Meanwhile, the battery pack mounting system can provide two different output voltages to the outside after the battery pack is placed in the battery pack mounting system, so that tools with two different working voltages are met, the application range of the power supply system is enlarged, and the problem that the existing power supply can only output one voltage is effectively solved. The invention effectively overcomes some practical problems in the prior art, thereby having high utilization value and use significance.

The above embodiments are merely illustrative of the principles of the present invention and its effectiveness, and are not intended to limit the invention. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the invention. Accordingly, it is intended that all equivalent modifications and variations of the invention be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.

Claims

1. A battery pack mounting system, comprising:

a housing;

a terminal part arranged on the shell and matched with the battery pack;

an input terminal electrically connected to the terminal portion;

an output terminal for outputting energy to the outside;

the switching structure is arranged in the shell and is electrically connected with the output end;

when the switching structure is at a first position, the output end is configured to output a first voltage;

when the switching structure is at a second position, the output end is configured to output a second voltage;

The terminal portion includes: the first inserting piece seat, the second inserting piece seat and the third inserting piece seat; the input end comprises a first input end and a second input end;

the first inserting sheet seat is electrically connected with the first input end, the first inserting sheet seat is electrically connected with the second input end, the second inserting sheet seat is electrically connected with the first input end, the second inserting sheet seat is electrically connected with the second input end, the third inserting sheet seat is electrically connected with the first input end, and the third inserting sheet seat is electrically connected with the second input end.

2. The battery pack mounting system of claim 1, wherein the housing is provided with a first battery pack cavity, a second battery pack cavity, and a third battery pack cavity; the first insert seat is arranged in the first battery pack cavity; the second insert seat is arranged in the second battery pack cavity; the third insert seat is arranged in the third battery pack cavity; the input end is respectively and electrically connected with the first inserting sheet seat, the second inserting sheet seat and the third inserting sheet seat.

3. The battery pack mounting system of claim 2, wherein the switching structure comprises a first switching portion and a second switching portion; when the switching structure is at a first position, the first switching part is electrically connected with the first input end, and the second switching part is disconnected with the second input end; when the switching structure is at a second position, the second switching part is electrically connected with the second input end, and the first switching part is disconnected with the first input end.

4. The battery pack mounting system of claim 3, wherein the single-cell pack is capable of outputting a voltage to the outside, the single-cell pack is provided with single-cell pack terminals, and the single-cell pack terminals comprise a positive terminal and a negative terminal; the double-voltage battery pack can output two types of voltages to the outside, and is provided with a double-voltage battery pack terminal which comprises two positive electrode terminals and two negative electrode terminals; the first inserting sheet seat is matched with the single-battery pack terminal, the second inserting sheet seat is matched with the single-battery pack terminal, and the third inserting sheet seat is matched with the double-battery pack terminal.

5. The battery pack mounting system of claim 3 wherein the terminal of the first switch matches the terminal of the first input and the terminal of the second switch matches the terminal of the second input.

6. The battery pack mounting system of claim 3, wherein said switching structure comprises: a support body and a slide bar; the support body is fixedly connected with the sliding rod; the first switching part is arranged on one side of the support body, and the second switching part is arranged on the other side of the support body.

7. The battery pack mounting system of claim 6, wherein said switching structure further comprises: and the resetting piece is arranged on the sliding rod.

8. The battery pack mounting system of claim 1, further comprising a back strap, the housing being mounted to the back strap.

9. A power supply system, comprising:

A housing on which a terminal portion is provided;

A battery pack mounted in the case and electrically connected to the terminal portion;

an input terminal electrically connected to the terminal portion;

an output terminal for outputting energy to the outside;

when the switching structure is at a first position, the output end outputs a first voltage;

When the switching structure is at a second position, the output end outputs a second voltage;

10. The power supply system of claim 9, wherein the battery pack comprises: a dual battery pack.

11. The power supply system according to claim 9 or 10, wherein the battery pack includes: two single-voltage battery packs.

12. The power supply system of claim 9, wherein the battery pack comprises: a single-voltage battery pack and a double-voltage battery pack.

13. A power tool system, comprising:

A housing on which a terminal portion is provided;

an input terminal electrically connected to the terminal portion;

an output terminal for outputting energy to the outside;

the adapter is provided with an adapter interface, and the adapter is configured to be electrically connected with the output end;

A first tool having a first tool interface disposed thereon, the adapter being electrically connected to the first tool when the first tool interface is coupled to the adapter interface;

A second tool having a second tool interface disposed thereon, the adapter being electrically connected to the second tool when the second tool interface is coupled to the adapter interface;

the first tool and the second tool have different operating voltages;

14. The power tool system of claim 13, further comprising a plug socket having a plug portion and a push-pull portion disposed thereon, the plug portion configured to electrically connect the output with the adapter; the push-pull part is sleeved on the plug part, and a push block for changing the position of the switching structure is arranged in the push-pull part; the push-pull part is provided with a pressing piece and a limiting piece, and the limiting piece is arranged on the pressing piece.

15. The power tool system of claim 14, wherein the pressing member is further provided with a first identification area and a second identification area.

16. The power tool system of claim 13, wherein the operating voltage of the first tool is the first voltage and the operating voltage of the second tool is the second voltage.