CN114336848A

CN114336848A - Power supply system and electric tool system

Info

Publication number: CN114336848A
Application number: CN202111642259.2A
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: 2022-04-12

Abstract

The invention relates to the field of power supply systems of electric tools, in particular to a power supply system and an electric tool system. The power supply system comprises a battery pack and an adapter, wherein the adapter comprises an input end, a first adaptive interface, a second adaptive interface, a first switching structure and a second switching structure, the input end is electrically connected with the battery pack through a power line, the first adaptive interface is configured to be matched with a first tool interface of a first electric tool, the second adaptive interface is configured to be matched with a second tool interface of a second electric tool, and the first switching structure is electrically connected with the input end and can be switched between a first state and a second state; the second switching structure is electrically connected with the input end and can be switched between a first state and a second state; the connection mode of the battery pack is adjusted through the first switching structure and the second switching structure, so that the power supply system can output two different working voltages. The power supply system can be applied to electric tools with different working voltages, and saves cost.

Description

Power supply system and electric tool system

Technical Field

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

Background

The conventional power supply assembly mostly adopts a fixed power supply mode, namely, the connection mode between the battery pack and the battery pack is fixed and unchanged, and under the condition, the power supply assembly can only provide one output voltage. Therefore, electrical devices or equipment such as garden tools, electric tools, household appliances and the like all need to be provided with power supplies independently, and if the electric tools which need to work in different voltage modes are encountered, two or more groups of power supplies need to be provided, so that time and labor are wasted, and great inconvenience is also brought to users.

Disclosure of Invention

In view of the above shortcomings of the prior art, the present invention provides a power supply system and a power tool system to achieve that a set of power supply systems provide different output voltages.

To achieve the above and other related objects, the present invention provides a power supply system, including a battery pack and an adapter, the adapter including an input terminal, a first adapter interface, a second adapter interface, a first switching structure and a second switching structure, the input terminal being electrically connected to the battery pack via a power cord, the first adapter interface being configured to mate with a first tool interface of a first power tool, the second adapter interface being configured to mate with a second tool interface of a second power tool; the first switching structure is electrically connected with the input end and can be switched between a first state and a second state; the second switching structure is electrically connected with the input end and can be switched between a first state and a second state; when the first electric tool is connected with the adapter, the first tool interface is matched with the first adaptive interface, the first switching structure is in the second state, and the adapter outputs a first voltage to the first electric tool; when the second electric tool is connected with the adapter, the second tool interface is matched with the second adaptive interface, the second switching structure is in a second state, and the adapter outputs a second voltage to the second electric tool.

In an example of the present invention, the battery pack includes a single-voltage battery pack and/or a dual-voltage battery pack, wherein the single-voltage battery pack can output a voltage to the outside, a single-voltage battery pack terminal is disposed on the single-voltage battery pack, and the single-voltage battery pack terminal includes a positive terminal and a negative terminal; two voltage of two voltage battery package can external output, be provided with two voltage battery package terminals on two voltage battery package, two voltage battery package terminals include two positive terminals and two negative terminal.

In an example of the present invention, the power supply system further includes a housing, the housing is provided with a first battery pack cavity, a second battery pack cavity and a third battery pack cavity, the first battery pack cavity and the second battery pack cavity are respectively provided with a first tab seat and a second tab seat, which are matched with the terminals of the single-voltage battery pack, and the third battery pack cavity is provided with a third tab seat, which is matched with the terminals of the dual-voltage battery pack.

In an example of the present invention, the adapter includes a first cover, a second cover, and a fixing bracket disposed between the first cover and the second cover, wherein a first adapting interface is disposed on the first cover, and the first adapting interface includes a first output end; the second adaptive interface is arranged on the second cover body and comprises a second output end; the first switching structure is arranged on one side of the fixed support facing the first cover body; the second switching structure is arranged on one side of the fixed support facing the second cover body.

In an example of the present invention, the first switching structure includes a first switching portion and a first switching socket engaged with the first switching portion, the first switching portion includes a first sliding seat, a first sliding rod connected to the first sliding seat, a first spring sleeved on the first sliding rod, and a first switching terminal installed on the first sliding seat, and a first connection terminal engaged with the first switching terminal is disposed in the first switching socket; when the first switching terminal is separated from the first connecting terminal, the first switching structure is in a first state, and when the first switching terminal is connected with the first connecting terminal, the first switching structure is in a second state.

In an example of the present invention, the first switching structure is mounted on the fixing bracket through a first PCB, the first connection terminal is electrically connected to the input terminal through the first PCB, and the first switching terminal is electrically connected to the first output terminal through a wire.

In an example of the present invention, the second switching structure includes a second switching portion and a second switching socket engaged with the second switching portion, the second switching portion includes a second sliding seat, a second sliding rod connected to the second sliding seat, a second spring sleeved on the second sliding rod, and a second switching terminal plate installed on the second sliding seat, and a second connection terminal engaged with the second switching terminal is provided in the second switching socket; when the second switching terminal is separated from the second connecting terminal, the second switching structure is in the first state, and when the second switching terminal is connected with the second connecting terminal, the second switching structure is in the second state.

In an example of the present invention, the second switching structure is mounted on the fixing bracket through a second PCB, the second connection terminal is electrically connected to the input terminal through the second PCB, and the second switching terminal is electrically connected to the second output terminal through a wire.

In an example of the present invention, a first groove is disposed at a position of the first cover corresponding to the first output end, and a first button spring connected to the first button are disposed at an end of the first cover facing away from the first groove.

In an example of the present invention, a second groove is disposed at a position of the second cover corresponding to the second output end, and a second button spring connected to the second button are disposed at an end of the second cover facing away from the second groove.

In one example of the present invention, the battery pack includes two single-voltage battery packs mounted in first and second battery pack cavities, respectively.

In one example of the present invention, the battery pack includes a dual-voltage battery pack mounted within a third battery pack cavity.

In one example of the present invention, a battery pack includes a single-voltage battery pack mounted in a first battery pack cavity or a second battery pack cavity and a dual-voltage battery pack mounted in a third battery pack cavity.

In one example of the present invention, the battery pack includes two single-voltage battery packs mounted in the first and second battery pack cavities, respectively, and a dual-voltage battery pack mounted in the third battery pack cavity.

In an example of the present invention, the housing is provided with a connection terminal, and the first insert seat, the second insert seat and the third insert seat are electrically connected to the connection terminal respectively.

In an example of the invention, the wiring terminal is provided with a fool-proof structure, the shell is provided with a mounting hole corresponding to the position of the wiring terminal, and the wiring terminal is fixed on the mounting hole.

In an example of the invention, one end of the power line connected with the battery pack is provided with a first connection port matched with the wiring terminal, and one end connected with the input end is provided with a second connection port matched with the input end.

The invention also provides an electric tool system, which comprises a battery pack, an adapter, a first electric tool and a second electric tool, wherein the first electric tool is provided with a first tool interface; the adapter comprises an input end, a first adapting interface, a second adapting interface, a first switching structure and a second switching structure, wherein the input end is electrically connected with the battery pack through a power line, the first adapting interface is configured to be matched with the first tool interface, and the second adapting interface is configured to be matched with the second tool interface; the first switching structure is electrically connected with the input end and can be switched between a first state and a second state; the second switching structure is electrically connected with the input end and can be switched between a first state and a second state; when the first electric tool is connected with the adapter, the first tool interface is matched with the first adaptive interface, the first switching structure is in the second state, and the adapter outputs a first voltage to the first electric tool; when the second electric tool is connected with the adapter, the second tool interface is matched with the second adaptive interface, the second switching structure is in a second state, and the adapter outputs a second voltage to the second electric tool.

In an example of the present invention, the first tool interface includes a first tool plug and the second tool interface includes a second tool plug.

In one example of the present invention, the power tool system further includes a backpack assembly including a harness for carrying the battery pack and a belt connected to the harness.

The invention provides a power supply system and an electric tool system, wherein a first switching structure electrically connected with a first output end and a second switching structure electrically connected with a second output end are arranged in an adapter of the power supply system, and the power supply system can output two voltages outwards by changing the connection mode of a battery pack in the battery pack and the states of the first switching structure and the second switching structure, and can be applied to electric tools with two different working voltages. The power tool system comprises the power supply system and two power tools with different working voltages, when the first power tool is used, the output voltage of the power supply system is switched to the first voltage, and when the second power tool is used, the output voltage of the power supply system is switched to the second voltage, so that the purpose of multiple purposes of the power supply system is achieved, and the inconvenience of replacing the power supply system in different working voltage modes is solved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a power supply system according to an embodiment of the invention;

FIG. 2 is an exploded view of a battery pack in an embodiment of the power supply system of the present invention;

fig. 3 is a schematic structural view of a power supply system according to an embodiment of the invention with a bottom wall of a battery pack removed;

FIG. 4 is a schematic structural diagram of a first interposer in an embodiment of a power supply system of the invention;

FIG. 5 is a schematic structural diagram of a second card slot of the power supply system in an embodiment of the invention

FIG. 6 is a schematic diagram illustrating a connection between a battery pack assembly and a blade holder according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of a connection terminal of the power supply system of the present invention;

FIG. 8 is a schematic structural diagram of an adapter of the power supply system according to an embodiment of the invention;

FIG. 9 is a bottom view of FIG. 8;

FIG. 10 is an exploded view of an adapter in an embodiment of the power supply system of the present invention;

FIG. 11 is a schematic diagram of a first switching structure of the power supply system according to an embodiment of the invention;

FIG. 12 is a top view of a first switching structure of the power supply system according to an embodiment of the invention;

FIG. 13 is an exploded view of a first switching configuration of the power supply system of the present invention in one embodiment;

fig. 14 is an exploded view of the first switching part in fig. 13;

FIG. 15 is a diagram illustrating a second switching structure of the power supply system according to an embodiment of the invention;

FIG. 16 is a top view of a second switch structure of the power supply system according to an embodiment of the invention;

FIG. 17 is an exploded view of a second switch structure of the power supply system in accordance with one embodiment of the present invention;

fig. 18 is an exploded view of the second switching portion of fig. 17;

FIG. 19 is a schematic diagram of the power supply system of the present invention in an embodiment of a first switching structure and an adapter;

FIG. 20 is a schematic diagram of the power supply system according to the present invention, wherein the second switch structure is engaged with the adapter;

FIG. 21 is a schematic diagram of a power line of the power supply system according to an embodiment of the invention;

FIG. 22 is a circuit diagram of the power supply system of the present invention;

FIG. 23 is a circuit diagram of a power supply system of the present invention with two piezoelectric battery packs installed in one embodiment;

FIG. 24 is a circuit diagram of FIG. 23 when the first voltage is output;

FIG. 25 is a circuit diagram of FIG. 23 when the second voltage is output;

fig. 26 is a circuit diagram of a power supply system of the present invention with a dual voltage battery pack installed in one embodiment;

FIG. 27 is a circuit diagram of FIG. 26 when the first voltage is output;

FIG. 28 is a circuit diagram of FIG. 26 when the second voltage is output;

fig. 29 is a circuit diagram of the power supply system of the present invention with one single-voltage battery pack and one double-voltage battery pack installed in one embodiment;

FIG. 30 is a circuit diagram of FIG. 29 when the first voltage is output;

fig. 31 is a circuit diagram when the second voltage is output in fig. 29;

fig. 32 is a circuit diagram of a power supply system of the present invention in one embodiment with two single-voltage battery packs and one dual-voltage battery pack installed;

FIG. 33 is a circuit diagram of FIG. 31 when the first voltage is output;

FIG. 34 is a circuit diagram of FIG. 31 when the second voltage is outputted

FIG. 35 is a schematic view of a power tool system of the present invention configured to mount a first power tool in accordance with one embodiment;

FIG. 36 is a schematic view of a power tool system of the present invention configured to mount a second power tool in accordance with one embodiment;

FIG. 37 is a schematic view of the power tool system of the present invention illustrating the engagement of the adapter with the first tool plug of the first power tool in one embodiment;

FIG. 38 is a schematic view of the power tool system of the present invention illustrating the engagement of the adapter with the second tool plug of the second power tool in one embodiment;

FIG. 39 is a schematic view of a backpack assembly of the power tool system of the present invention in one embodiment;

FIG. 40 is a schematic view of the structure of FIG. 37 from another angle;

FIG. 41 is a schematic diagram of the operation of a first power tool of the power tool system of the present invention in an embodiment;

FIG. 42 is a schematic view of a second embodiment of the power tool system of the present invention.

Description of the element reference numerals

100. A battery pack; 101. a housing; 102. a first battery pack cavity; 103. a second battery pack cavity; 104. a third battery pack cavity; 105. a first insert seat; 1051. a first terminal; 1052. a second terminal; 106. a second insert seat; 107. a third insert seat; 1071. a third terminal; 1072. a fourth terminal; 108. a wiring terminal; 109. mounting holes; 110. a single-voltage battery pack; 120. a dual-voltage battery pack; 200. an adapter; 201. a first cover body; 2011. a first groove; 2012. a first slide rail; 202. a second cover body; 2021. a second groove; 2022. a second slide rail; 203. fixing a bracket; 204. a first PCB board; 205. a first output terminal; 206. a second PCB board; 207. a second output terminal; 208. a first button; 2081. a first lock catch; 209. a first button spring; 210. a second button; 2101. a second lock catch; 211. a second button spring; 300. a first switching structure; 301. a first switching section; 302. a first switching socket; 3011. a first sliding seat; 3012. a first slide bar; 3013. a first spring; 3014. a first switching terminal; 3015. a first conductive line; 3021. a first connection terminal; 400. a second switching structure; 401. a second switching unit; 402. a second switching socket; 4011. a second sliding seat; 4012. a second slide bar; 4013. a second spring; 4014. a second switching terminal; 4015. a second conductive line; 4021. a second connection terminal; 500. a power line; 501. a first connection port; 502. a second connection port; 600. a first power tool; 601. a first tool plug; 700. a second power tool; 701. a second tool plug; 800. a backpack assembly; 801. a harness; 802. a waist belt.

Detailed Description

The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict. It is also to be understood that the terminology used in the examples is for the purpose of describing particular embodiments only, and is not intended to limit the scope of the present invention. Test methods in which specific conditions are not specified in the following examples are generally carried out under conventional conditions or under conditions recommended by the respective manufacturers.

It should be understood that the terms "upper", "lower", "left", "right", "middle" and "one" used herein are for clarity of description only, and are not intended to limit the scope of the invention, and that changes or modifications in the relative relationship may be made without substantial technical changes and modifications.

In view of the above-mentioned drawbacks of the background art, an object of the present invention is to provide a power supply system and a power tool system, so as to improve the problem that the existing power supply system can only output one operating voltage.

Referring to fig. 1 and 10, the present invention provides a power supply system, including a battery pack 100 and an adapter 200, where the adapter 200 includes an input end, a first adapting interface, a second adapting interface, a first switching structure 300 and a second switching structure 400, the input end is electrically connected to the battery pack 100 through a power cord 500, the first adapting interface is configured to be matched with a first tool interface of a first electric tool, the second adapting interface is configured to be matched with a second tool interface of a second electric tool, the first switching structure 300 is electrically connected to the input end, and the first switching structure 300 is switchable between a first state and a second state; the second switching structure 400 is electrically connected to the input terminal, the second switching structure 400 being switchable between a first state and a second state. When the first power tool is connected to the adapter, the first tool interface is mated with the first mating interface, the first switching structure 300 is in the second state, and the adapter 200 outputs the first voltage to the first power tool; when the second power tool is connected to the adapter, the second tool interface is mated with the second mating interface, the second switching mechanism 400 is in the second state, and the adapter 200 outputs the second voltage to the second power tool.

Referring to fig. 2, the battery pack 100 includes a single-voltage battery pack 110 and/or a dual-voltage battery pack 120, where the single-voltage battery pack 110 includes a set of battery cells and a single-voltage battery pack terminal electrically connected to the battery cells, the single-voltage battery pack terminal includes a positive terminal and a negative terminal electrically connected to the positive and negative terminals of the battery cells, the single-voltage battery pack 110 can output one voltage, the dual-voltage battery pack 120 includes two sets of battery cells and a dual-voltage battery pack terminal electrically connected to the two sets of battery cells, the dual-voltage battery pack terminal includes two positive terminals and two negative terminals electrically connected to the positive and negative terminals of the two sets of battery cells, and the dual-voltage battery pack 120 can output two voltages.

Referring to fig. 2 to 5, in an embodiment of the present invention, the power supply system further includes a casing 101, the casing 101 may be an integral structure, or may be a split cavity structure enclosed by a bottom wall and a side wall, a first battery pack cavity 102, a second battery pack cavity 103, and a third battery pack cavity 104 for mounting a battery pack are disposed in the casing 101, a first tab seat 105 and a second tab seat 106 matched with a single-voltage battery pack terminal are disposed in the first battery pack cavity 102 and the second battery pack cavity 103, and a third tab seat 107 matched with a dual-voltage battery pack terminal is disposed in the third battery pack cavity 104. The first card socket 105 and the second card socket 106 have the same structure, the first card socket 105 is provided with two first terminals 1051 and two second terminals 1052, the first terminals 1051 are electrically connected with the second terminals 1052, wherein the first terminals 1051 are matched with the terminals of the single-cell pack, and the second terminals 1052 are electrically connected with the input end of the adapter 200. The third tab seat 107 is provided with four third terminals 1071 and four fourth terminals 1072, the third terminals 1071 are electrically connected with the fourth terminals 1072, the third terminals 1071 are matched with the terminals of the dual-voltage battery pack, and the fourth terminals 1072 are electrically connected with the input end of the adapter 200. When the battery pack is installed, the battery pack is installed corresponding to the inserting piece seat in the cavity of the battery pack.

Referring to fig. 2 and fig. 4 to fig. 7, the housing 101 is provided with a terminal 108, and the second terminal 1052 and the fourth terminal 1072 are electrically connected to the terminal 108, respectively. For example, a PCB is disposed in the housing 101, the first insert seat 105, the second insert seat 106 and the third insert seat 107 are electrically connected to the PCB, the connection terminal 108 is electrically connected to the PCB, and a circuit for connecting the first insert seat 105, the second insert seat 106, the third insert seat 107 and the connection terminal 108 is disposed on the PCB. A mounting hole 109 is formed in the case 101 on a side corresponding to the terminal 108, and the terminal 108 is fixed to the inside of the mounting hole 109. Preferably, the wiring terminal 108 is provided with a fool-proof structure to prevent wiring errors, for example, the wiring terminal structure in fig. 7, the wiring terminal 108 is a circular structure, eight electrode terminals corresponding to the first terminal 1051 and the third terminal 1071 are circumferentially arranged on the circular structure, and a center boss is arranged at the center of each of the eight electrode terminals to be installed in cooperation with a wire.

Referring to fig. 8 to 10, the adapter 200 includes a first cover 201, a second cover 202, and a fixing bracket 203, the first cover 201 and the second cover 202 are fastened to form a cavity, and the fixing bracket 203 is installed in the cavity formed by the first cover 201 and the second cover 202. The first adapting interface is arranged on the first cover body 201, the first adapting interface comprises a first output end 205, and the first output end 205 is electrically connected with the input end of the adapter; a second mating interface is disposed on the second cover 202, the second mating interface includes a second output 207, and the second output 207 is electrically connected to the input of the adapter 200. The first switching mechanism 300 is mounted on the side of the fixing bracket 203 facing the first cover 201, and the second switching mechanism 400 is mounted on the side of the fixing bracket 203 facing the second cover 202.

Referring to fig. 11 to 14, the first switching structure 300 includes a first switching portion 301 and a first switching socket 302 engaged with the first switching portion 301. The first switching portion 301 includes a first sliding seat 3011, a first sliding rod 3012, a first spring 3013, and a first switching terminal 3014, wherein the first sliding seat 3011 can slide in the first switching socket 302, the first sliding rod 3012 is fixedly connected to the first sliding seat 3011, one end of the first sliding rod 3012 is located in the first switching socket 302, and the other end extends to the outside of the adapter 200; the first spring 3013 is sleeved on the first slide bar 3012, one end of the first spring is abutted against the boss of the first slide bar 3012, the other end of the first spring is abutted against the inner wall of the first switching socket 302, the first switching terminal 3014 is installed on the first slide block 3011, and the first switching socket 302 is internally provided with a first connection terminal 3021 matched with the first switching terminal 3014.

Referring to fig. 15 to 18, the second switching structure 400 includes a second switching portion 401 and a second switching socket 402 engaged with the second switching portion 401. The second switch 401 includes a second sliding seat 4011, a second sliding rod 4012, a second spring 4013, and a second switch terminal 4014, wherein the second sliding seat 4011 is slidable in the second switch socket 402, the second sliding rod 4012 is fixedly connected to the second sliding seat 4011, one end of the second sliding rod 4012 is located in the second switch socket 402, and the other end extends to the outside of the adapter 200; the second spring 4013 is sleeved on the second sliding rod 4012, one end of the second spring abuts against the boss of the second sliding rod 4012, and the other end of the second spring abuts against the inner wall of the second switching socket 402; the second switch terminal 4014 is mounted on the second slide base 4011, and a second connection terminal 4021 that engages with the second switch terminal 4014 is provided inside the second switch socket 402.

Referring to fig. 10, 13, 17, 19 and 20, in an example, the first switching structure 300 is mounted on the fixing bracket 203 through the first PCB 204, the first PCB 204 is mounted on a side of the fixing bracket 203 facing the first cover 201, the first output terminal 205 is disposed at one end of the first PCB 204, the input end of the adapter 200 is electrically connected to the first connection terminal 3021 through the first PCB 204, and the first switching terminal 3014 is electrically connected to the positive terminal and the negative terminal of the first output terminal 205 through the first wire 3015. The second switch structure 400 is installed on the fixing bracket 203 through the second PCB 206, the second PCB 206 is installed on one side of the fixing bracket 203 facing the second cover 202, the second output end 207 is disposed at one end of the second PCB 206, the input end of the adapter 200 is electrically connected to the first connection terminal 4021 through the second PCB 206, and the second switch terminal 4014 is electrically connected to the positive terminal and the negative terminal of the second output end 207 through the second wire 4015.

Referring to fig. 13, 14, 17 and 18, the number of the first switching terminals 3014 is equal to the number of the first connection terminals 3021, and the number of the first connection terminals 3021 is the sum of the numbers of the second terminals 1052 and the fourth terminals 1072. The number of the second switching terminals 4014 is equal to the number of the second connection terminals 4021, and the number of the second connection terminals 4021 is the sum of the numbers of the second terminals 1052 and the fourth terminals 1072. For example, if the first card holder 105 has two second terminals 1052, the second card holder 106 has two second terminals 1052, and the third card holder 107 has four fourth terminals 1072, the number of the first connection terminals 3021 is eight, and the number of the second connection terminals is eight, so the number of the first switching terminals 3014 is eight, and the number of the second switching terminals 4014 is eight.

Referring to fig. 4 to fig. 6, in an embodiment, two second terminals 1052 of the first card slot 105 are respectively labeled as: 1+ and 1-, the two second terminals 1052 of the second wafer socket 106 are labeled: 2+ and 2-; the four fourth terminals 1072 of the third wafer holder 107 are respectively labeled: 3+, 3-, 4+ and 4-.

Referring to fig. 13, 14 and 19, eight first connection terminals 3021 are respectively labeled 3021a, 3021b, 3021c, 3021d, 3021e, 3021f, 3021g, 3021 h; the

terminals

3021a, 3021b, 3021c, and 3021d are electrically connected to the terminals 1+, 2+, 3+, and 4+ in a one-to-one correspondence, and the specific correspondence in the one-to-one correspondence is not limited, for example, the terminal 3021a is electrically connected to the 1+ terminal, the terminal 3021b is electrically connected to the 3+ terminal, the terminal 3021c is electrically connected to the 4+ terminal, and the terminal 3021d is electrically connected to the 2+ terminal. The 3021e, 3021f, 3021g, and 3021h terminals are electrically connected to the 1-terminal, the 2-terminal, the 3-terminal, and the 4-terminal in a one-to-one correspondence, and the specific correspondence in the one-to-one correspondence is not limited, for example, the 3021e terminal is electrically connected to the 1-terminal, and the 3021f terminal is electrically connected to the 4-terminal; 3021g terminal electrically connected to the 3-terminal; 3021h terminal is electrically connected to the 2-terminal.

Referring to fig. 13, 14 and 19, eight first switching terminals 3014 are labeled 3014a, 3014b, 3014c, 3014d, 3014e, 3014f, 3014g and 3014h, respectively; among them, the 3014a terminal configuration is electrically connected to the 3021a terminal, the 3014b terminal configuration is electrically connected to the 3021b terminal, the 3014c terminal configuration is electrically connected to the 3021c terminal, the 3014d terminal configuration is electrically connected to the 3021d terminal, the 3014e terminal configuration is electrically connected to the 3021e terminal, the 3014f terminal configuration is electrically connected to the 3021f terminal, the 3014g terminal configuration is electrically connected to the 3021g terminal, and the 3014h terminal configuration is electrically connected to the 3021h terminal. The eight first switching terminals 3014 can be electrically connected to each other, and the eight terminals can be electrically connected in any one of the possible embodiments that can achieve the object and achieve the effect of the present invention. For example, the 3014a, 3014b, 3014c, and 3014d terminals are electrically connected to each other and to the positive terminal of the first output terminal 205; 3014e, 3014f, 3014g, and 3014h terminals are electrically connected to each other and to the negative terminal of the first output 205. For convenience of processing, the 3014a terminal, 3014b terminal, 3014c terminal and 3014d terminal of the first switching terminal 3014 may be an integrally molded structure and made of an electrical conductor. The 3014e terminal, 3014f terminal, 3014g terminal and 3014h terminal of the first switching terminal 3014 are an integral structure and made of electric conductor.

Referring to fig. 17, 18, and 20, eight second connection terminals 4021 are respectively designated as 4021a, 4021b, 4021c, 4021d, 4021e, 4021f, 4021g, and 4021 h. The

terminals

4021a, 4021b, 4021c, 4021d, 4021e, 4021f, 4021g and 4021h are electrically connected to the terminals 1+, 3+, 1-, 4+, 3-, 2+, 4-and 2-in one-to-one correspondence, which may be any implementable embodiment capable of achieving the technical effects and achieving the purposes of the present invention. For example, terminal 4021a is electrically connected to the 1+ terminal, terminal 4021b is electrically connected to the 3+ terminal, terminal 4021c is electrically connected to the 1-terminal, terminal 4021d is electrically connected to the 4+ terminal, terminal 4021e is electrically connected to the 3-terminal, terminal 4021f is electrically connected to the 2+ terminal, terminal 4021g is electrically connected to the 4-terminal, and terminal 4021h is electrically connected to the 2-terminal.

Referring to fig. 17, 18 and 20, eight second switch terminals 4014 are labeled 4014a, 4014b, 4014c, 4014d, 4014e, 4014f, 4014g and 4014h, respectively; the 4014a terminal is electrically connected to the 4021a terminal, the 4014b terminal is electrically connected to the 4021b terminal, the 4014c terminal is electrically connected to the 4021c terminal, the 4014d terminal is electrically connected to the 4021d terminal, the 4014e terminal is electrically connected to the 4021e terminal, the 4014f terminal is electrically connected to the 4021f terminal, the 4014g terminal is electrically connected to the 4021g terminal, and the 4014h terminal is electrically connected to the 4021h terminal. The eight first switch terminals 4014 can be electrically connected to each other, and the eight terminals can be electrically connected in any one of the possible embodiments that can achieve the object and achieve the effect of the present invention. For example, the 4014a terminal is electrically connected to the 4014b terminal and to the positive terminal of the second output terminal 207, the 4014c terminal, the 4014d terminal, the 4014e terminal, and the 4014f terminal, and the 4014g terminal is electrically connected to the 4014h terminal and to the negative terminal of the second output terminal 207. The 4014a terminal and the 4014b terminal can be integrally formed, the 4014c terminal, the 4014d terminal, the 4014e terminal and the 4014f terminal can be integrally formed, and the 4014g terminal and the 4014h terminal can be integrally formed, and all the integrally formed structures are made of electric conductors.

It should be noted that the marks of the terminals in the above embodiments are only for clarity of description, and are not intended to be limiting.

Referring to fig. 13, 17, 19 and 20, the types of the first switch terminal 3014, the second switch terminal 4014, the first connection terminal 3021 and the second connection terminal 4021 are not limited, and may be a connection piece or a contact. In order to simplify the manufacturing process, the terminal types of the connection terminals of the first connection terminal 3021 and the second connection terminal 4021 are the same. For example, the first connection terminal 3021 and the second connection terminal 4021 are female terminals, and the first switch terminal 3014 and the second switch terminal 4014 are male terminals. Alternatively, the first connection terminal 3021 and the second connection terminal 4021 are male terminals, and the first switch terminal 3014 and the second switch terminal 4014 are female terminals.

Referring to fig. 13, 17, 19 and 20, under the action of an external force, the first slide bar 3012 drives the first slide seat 3011 to slide along the first switch socket 302, the first spring 3013 is compressed to the inner wall of the first switch socket 302, at this time, the first switch terminal 3014 is inserted into the first connection terminal 3021 correspondingly, the circuit is turned on, the first output end 205 outputs a first voltage, and the first switch structure 300 is in a second state; after the external force is removed, under the elastic action of the first spring 3013, the first slide bar 3013 drives the first slide seat 3011 to run reversely, the first switch terminal 3014 is separated from the first connection terminal 3021, no voltage is output from the first output terminal 205, and the first switch structure 300 is in the first state.

Similarly, under the action of an external force, the second sliding rod 4012 drives the second sliding seat 4011 to slide along the second switching socket 402, the second spring 4013 is compressed to the inner wall of the second switching socket 402, at this time, the second switching terminal 4014 is correspondingly inserted into the second connection terminal 4021, the circuit is conducted, the second output terminal 207 outputs a second voltage, and the second switching structure 400 is in a second state; after the external force is eliminated, under the elastic action of the second spring 4013, the second slide bar 4013 drives the second slide seat 4011 to run reversely, the second switch terminal 4014 is separated from the second connection terminal 4021, no voltage is output from the second output terminal 207, and the second switch structure 400 is in the first state.

Referring to fig. 8 to 10, a first groove 2011 is disposed at a position of the first cover 201 corresponding to the first output end 205, first slide rails 2012 are disposed at two sides of the first cover 201 for mounting an electric tool, a first button 208 and a first button spring 209 connected to the first button 208 are disposed at an end of the first cover 201 away from the first groove 2011, a first lock buckle 2081 is connected to the first button 208, and an end of the first button spring 209 away from the first button 208 abuts against the fixed bracket 203. When the first button 208 is pressed, the first button spring 209 is compressed downward, and when the electric tool slides along the first slide rail 2012 until the tool plug of the electric tool slides into the first groove 2011 to be coupled with the first output end 205, meanwhile, the tool plug of the electric tool pushes the first slide bar 3012 to drive the first slide seat 3011 to slide in the first switching socket 302, and the first switching terminal 3014 is connected with the first connection terminal 3021; when the first button 208 is released, the first button 208 is reset under the elastic action of the first button spring 209, and the first locking buckle 2081 connected with the first button 208 protrudes out of the first cover 201 and clamps the power tool, so that the first switching terminal 3014 and the first connecting terminal 3021 are prevented from being separated under the elastic action of the first spring 3013, and the limiting effect is achieved. Similarly, a second groove 2021 is disposed at a position of the second cover 202 corresponding to the second output end 207, second slide rails 2022 are disposed at two sides of the second cover 202, a second button 210 and a second button spring 211 connected to the second button 210 are disposed at an end of the second cover 202 away from the second groove 2021, the second button 210 is connected to a second latch 2101, and an end of the second button spring 211 away from the second button 210 abuts against the fixing bracket 203. When the second button 210 is pressed, the second button spring 211 is compressed downward, until the tool plug of the electric tool slides along the second slide rail 2022 until the tool plug of the electric tool is coupled with the second output terminal 207 through the second groove 2021, at the same time, the tool plug of the electric tool pushes the second slide bar 4012 to drive the second slide seat 4011 to slide in the second switch socket 402, the second switch terminal 4014 is connected with the second connection terminal 4021, the second button 210 is released, the second button 210 is reset under the elastic action of the second button spring 211, the second lock catch 2101 connected with the second button 210 protrudes out of the second cover 202 and clamps the electric tool, and the second switch terminal 4014 and the second connection terminal 4021 are prevented from being separated under the elastic action of the second spring 4013, so that the limiting effect is achieved.

Referring to fig. 1, 3, 10 and 21, in an embodiment, the battery pack 100 and the adapter 200 are electrically connected through a power cord 500, and the power cord 500 includes a first connection port 501 connected to the battery pack 100 and a second connection port 502 connected to an input end of the adapter 200. The first connection port 501 matches the structure of the connection terminal 108, the second connection port 502 is inserted into the input end of the adapter 200, and the second connection port 502 includes two terminals electrically connected to the first PCB 204 and the second PCB 206, respectively.

Referring to fig. 22, the circuit of the present invention is suitable for the following five situations: a single-cell pack; two single-voltage battery packs; two single-voltage battery packs and one double-voltage battery pack; a single-voltage battery pack and a double-voltage battery pack; a double-voltage battery pack is described in detail below with reference to the accompanying drawings. Since the single-voltage battery pack only includes one set of battery cells, the battery pack can only output one voltage nV, for example, 24V, no matter how the first switching structure and the second switching structure are switched. Therefore, the battery pack includes a single-cell battery pack, and will not be described in detail herein.

Referring to fig. 2, 13, 17 and 23 to 25, in an embodiment, two single-cell packs 110 are shown, the two single-cell packs 110 are respectively installed in the first cell pack cavity 102 and the second cell pack cavity 103, and two different voltages nV and 2nV, such as 24V and 48V, can be output by adjusting the connection manner of the two single-cell packs. When the first switch 301 slides along the first switch socket 302 until the first switch terminal 3014 is connected to the first connection terminal 3021, the first switch structure 300 is in the second state, the second switch structure 400 is in the first state, the 3014a terminal is electrically connected to the 1+ terminal via the 3021a terminal, the 3014d terminal is electrically connected to the 2+ terminal via the 3021d terminal, the 3014e terminal is electrically connected to the 1-terminal via the 3021e terminal, and the 3014h terminal is electrically connected to the 2-terminal via the 3021h terminal. Meanwhile, the 3014a terminal and the 3014d terminal are electrically connected to the positive terminal of the first output terminal 205, respectively, and the 3014e terminal and the 3014h terminal are electrically connected to the negative terminal of the first output terminal 205, respectively, so that the two single-voltage cells are connected in parallel, and the first output terminal 205 outputs the first voltage nV, that is, a parallel voltage. When the second switch portion 401 slides along the second switch socket 402 to the second switch terminal 4014 and connects with the second connection terminal 4021 under the action of external force, the second switch structure 400 is in the second state, the first switch structure 300 is in the first state, the 4014a terminal is electrically connected with the 1+ terminal via the 4021a terminal, the 4014c terminal is electrically connected with the 1-terminal via the 4021c terminal, the 4014f terminal is electrically connected with the 2+ terminal via the 4021f terminal, the 4014h terminal is electrically connected with the 2-terminal via the 4021h terminal, the 4014c terminal is electrically connected with the 4014f terminal, the 4014a terminal is electrically connected with the positive terminal of the second output terminal 207, and the 4014h terminal is electrically connected with the negative terminal of the second output terminal 207, so that the two single piezoelectric cells are connected in series, and the second output terminal 207 outputs the second voltage 2nV, that is, a series voltage.

Referring to fig. 2, 13, 17, and 26 to 28, in an embodiment, a dual voltage battery pack 120 is shown, and the dual voltage battery pack 120 is installed in the third battery pack cavity 104, and two different voltages nV and 2nV, such as 24V and 48V, can be output by adjusting a connection manner of two sets of battery cells in the dual voltage battery pack. When the first switch 301 slides along the first switch socket 302 to the first switch terminal 3014 and the first connection terminal 3021, the first switch 300 is in the second state, the second switch 400 is in the first state, the 3014b terminal is electrically connected to the 3+ terminal via the 3021b terminal, the 3014c terminal is electrically connected to the 4+ terminal via the 3021c terminal, the 3014g terminal is electrically connected to the 3-terminal via the 3021g terminal, and the 3014f terminal is electrically connected to the 4-terminal via the 3021f terminal, and at the same time, the 3014b terminal and the 3014c terminal are electrically connected to the positive terminal of the first output 205, and the 3014g terminal and the 3014f terminal are electrically connected to the negative terminal of the first output 205, and at this time, the two sets of cells are connected in parallel, and the first output 205 outputs a first voltage nV, for example, 24V; when the second switch portion 401 slides along the second switch socket 402 to the second switch terminal 4014 and connects with the second connection terminal 4021 under the action of external force, the second switch structure 400 is in the second state, the first switch structure 300 is in the first state, the 4014b terminal is electrically connected with the 3+ terminal via the 4021b terminal, the 4014e terminal is electrically connected with the 3-terminal via the 4021e terminal, the 4014d terminal is electrically connected with the 4+ terminal via the 4021d terminal, and the 4014g terminal is electrically connected with the 4-terminal via the 4021g terminal. Meanwhile, the 4014b terminal is electrically connected with the positive terminal of the second output end 207, the 4014e terminal is electrically connected with the 4014d terminal, the 4014g terminal is electrically connected with the negative terminal of the second output end 207, at this time, the two groups of battery cells are connected in series, and the second output end 207 outputs a second voltage of 2nV, for example, 48V.

Referring to fig. 2, 13, 17 and 29 to 31, in one embodiment, a single piezoelectric battery pack 110 and a dual piezoelectric battery pack 120 are shown, the single piezoelectric battery pack 110 is installed in the first battery pack cavity 102 or the second battery pack cavity 103, and the dual piezoelectric battery pack 120 is installed in the third battery pack cavity 104. By adjusting the connection mode of the battery pack, two different voltages nV and 2nV, such as 24V and 48V, can be output. When the first switch 301 slides along the first switch socket 302 under the action of external force until the first switch terminal 3014 is connected to the first connection terminal 3021, the first switch 300 is in the second state, the second switch 400 is in the first state, the 3014b terminal is electrically connected to the 3+ terminal via the 3021b terminal, the 3014c terminal is electrically connected to the 4+ terminal via the 3021c terminal, the 3014d terminal is electrically connected to the 2+ terminal via the 3021d terminal, the 3014g terminal is electrically connected to the 3-terminal via the 3021g terminal, the 3014f terminal is electrically connected to the 4-terminal via the 3021f terminal, the 3014h terminal is connected to the 2-terminal via the 3021h terminal, and at the same time, the 3014b terminal and the 3014c terminal 3014d terminal are electrically connected to the positive terminal of the first output terminal 205, the 3014f terminal, the 3014g terminal and the 3014h terminal are electrically connected to the negative terminal of the first output terminal 205, a first voltage nV, for example 24V, is output from the first output 205; when the second switch portion 401 slides along the second switch socket 402 to connect with the second switch terminal 4014 and the second connection terminal 4021 under the action of external force, the second switch structure 400 is in the second state, the first switch structure 300 is in the first state, the 4014b terminal is electrically connected with the 3+ terminal via the 4021b terminal, the 4014e terminal is electrically connected with the 3-terminal via the 4021e terminal, the 4014d terminal is electrically connected with the 4+ terminal via the 4021d terminal, the 4014g terminal is electrically connected with the 4-terminal via the 4021g terminal, the 4014f terminal is electrically connected with the 2+ terminal via the 4021f terminal, and the 4014h terminal is electrically connected with the 2-terminal via the 4021h terminal. Meanwhile, the 4014b terminal is electrically connected to the positive terminal of the second output terminal 207, the 4014e terminal, the 4014d terminal, and the 4014f terminal are electrically connected, and the 4014g terminal and the 4014h terminal are electrically connected to the negative terminal of the second output terminal 207, respectively. Therefore, one of the two cells (the cell electrically connected to the 4+ terminal and the 4-terminal) in the dual voltage battery pack 120 is connected in parallel with the single voltage battery pack, and then connected in series with the other cell, so that the second output terminal 207 outputs a second voltage 2nV, for example, 48V. In another embodiment, the two groups of electric cores in the dual-voltage battery pack may be connected in parallel, and then connected in series with the single-voltage battery pack, and the second voltage is output by the second output terminal.

Referring to fig. 2, 13, 17 and 32 to 34, in an embodiment, two single-voltage battery packs 110 and one dual-voltage battery pack 120 are shown, the two single-voltage battery packs 110 are respectively installed in the first battery pack cavity 102 and the second battery pack cavity 103, the dual-voltage battery pack 120 is installed in the third battery pack cavity 104, and the two single-voltage battery packs 110 are respectively a first single-voltage battery pack and a second single-voltage battery pack. The positive terminal and the negative 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 mode. And the positive terminal and the negative 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 manner. The positive terminals and the negative terminals of the two groups of cells in the dual-voltage battery pack 120 are electrically connected with the 3+ terminal, the 4+ terminal, the 3-terminal and the 4-terminal in a one-to-one correspondence manner. By adjusting the connection mode of the three battery packs, two different voltages nV and 2nV, such as 24V and 48V, can be output. When the first switch 301 slides along the first switch socket 302 by an external force until the first switch terminal 3014 is connected to the first connection terminal 3021, the first switch 300 is in the second state, the second switch 400 is in the first state, 3014a is electrically connected to the 1+ terminal via the 3021a terminal, 3014b is electrically connected to the 3+ terminal via the 3021b terminal, 3014c is electrically connected to the 4+ terminal via the 3021c terminal, 3014d is electrically connected to the 2+ terminal via the 3021d terminal, 3014e is electrically connected to the 1-terminal via the 3021e terminal, 3014f is electrically connected to the 4-terminal via the 3021f terminal, 3014g is electrically connected to the 3-terminal via the 3021g terminal, and 3014h is connected to the 2-terminal via the 3021h terminal. Meanwhile, the 3014a terminal, the 3014b terminal, the 3014c terminal, and the 3014d terminal are respectively electrically connected to the positive terminal of the first output terminal 205, and the 3014e terminal, the 3014f terminal, the 3014g terminal, and the 3014h terminal are respectively electrically connected to the negative terminal of the first output terminal 205, at this time, two sets of cells in the two single-voltage battery packs and the dual-voltage battery pack are connected in parallel, and the first output terminal 205 outputs a first voltage nV, for example, 24V; when the second switch portion 401 slides along the second switch socket 402 to connect with the second switch terminal 4014 and the second connection terminal 4021 under the action of external force, the second switch structure 400 is in the second state, the first switch structure 300 is in the first state, the 4014a terminal is electrically connected with the 1+ terminal via the 4021a terminal, the 4014c terminal is electrically connected with the 1-terminal via the 4021c terminal, the 4014f terminal is electrically connected with the 2+ terminal via the 4021f terminal, the 4014h terminal is electrically connected with the 2-terminal via the 4021h terminal, the 4014b terminal is electrically connected with the 3+ terminal via the 4021b terminal, the 4014e terminal is electrically connected with the 3-terminal via the 4021e terminal, the 4014d terminal is electrically connected with the 4+ terminal via the 4021d terminal, and the 4014g terminal is electrically connected with the 4-terminal via the 4021g terminal. Meanwhile, the 4014a terminal and the 4014b terminal are electrically connected to the positive terminal of the second output terminal 115, the 4014c terminal, the 4014d terminal, the 4014e terminal, and the 4014f terminal are electrically connected to each other, and the 4014g terminal and the 4014h terminal are electrically connected to the negative terminal of the second output terminal 115. Therefore, the first single-voltage battery pack is connected with the first battery cell in parallel and named as a first parallel circuit; the second single-voltage battery pack is connected in parallel with the second electric core, and is named as a second parallel circuit, and the first parallel circuit and the second parallel circuit are connected in series, and a second voltage 2nV, for example, 48V, is output from the second output terminal 207.

Referring to fig. 35 and 36, the present invention further provides a power tool system comprising the power supply system of the present invention and the first power tool 600 and the second power tool 700, wherein the first power tool 600 and the second power tool 700 have different operating voltages, the first power tool 600 has an operating voltage nV, such as 24V, and the second power tool 700 has an operating voltage nV, such as 48V, so that the first power tool 600 is electrically connected to the first output terminal 205 of the adaptor 200 when the first power tool 600 is in use, and the second power tool 700 is electrically connected to the second output terminal 207 of the adaptor 200 when the second power tool 700 is in use.

Referring to fig. 8, 9, 10, 13, 17 and 35 to 38, preferably, the first electric tool 600 is provided with a first tool interface including a first tool plug 601 matched with the first output end 205, and the second electric tool 700 is provided with a second tool interface including a second tool plug 701 matched with the second output end 207. When the first power tool 600 is mounted, the first button 208 is pressed, and the first power tool 600 is slid along the first slide rail 2012 until the connection terminal of the first tool plug 601 is connected to the connection terminal of the first output terminal 205. In the sliding process of the first electric tool 600, after the first tool plug 601 contacts the first slide bar 3012, the first slide bar 3012 drives the first slide seat 301 to slide along the first switching socket 302 until the first switching terminal 3014 is connected to the first connection terminal 3021, at this time, the first output terminal 205 outputs the first voltage, the first button 208 is released, the first button 208 is reset, and the first latch 2081 fixedly connected to the first button 208 protrudes out of the first cover 201 and is embedded into the first electric tool 600. Similarly, when the second power tool 700 is mounted, the second button 210 is pressed, and the second power tool 700 is slid along the second slide rail 2022 until the connection terminal on the second tool plug 701 communicates with the connection terminal of the second output terminal 207. In the sliding process of the second electric tool 700, after the second tool plug 701 contacts the second sliding rod 4012, the second sliding rod 4012 is pushed to drive the second sliding seat 401 to slide along the second switching socket 402 until the second switching terminal 4014 is connected to the second connection terminal 4021, at this time, the second output terminal 207 outputs the second voltage, the second button 210 is released, the second button 210 resets, and the second lock 2101 fixedly connected to the second button 210 protrudes out of the second cover 202 and is embedded into the second electric tool 700.

Referring to fig. 39-42, in one embodiment, the power tool system further includes a backpack assembly 800 for carrying, the backpack assembly 800 includes a strap 801 and a belt 802, the strap 801 is connected to the housing 101 for carrying the battery pack 100, and the belt 802 is fixed to the bottom of the strap 801 for detachable fastening around the waist. In use, the battery pack 100 is carried on the person by the carrying assembly 800, and the electric tool may be held by hand, for example, when the first electric tool 600 is used, the first electric tool 600 is attached to the first cover 201 of the adapter 200, and the battery pack 100 is carried on the person, and the person may start to work by holding the first electric tool 600 by hand. Similarly, when the second electric power tool 700 is used, the second electric power tool 700 is attached to the second cover 202 of the adapter 200, and the battery pack 100 is carried on the body of the worker, and the worker can start the work by holding the second electric power tool 700 with his hand.

According to the power supply system, the connection mode of the battery pack is adjusted through the first switching structure and the second switching structure, so that the power supply system outputs two different voltages, and further, the power supply system is applied to electric tools with different working voltages, the problem that one power supply system can only output one working voltage in the prior art is solved, the cost is saved, and the working efficiency is improved. Therefore, the invention effectively overcomes some practical problems in the prior art, thereby having high utilization value and use significance.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. A power supply system, comprising:

a battery pack; and

an adapter, the adapter comprising:

the input end is electrically connected with the battery pack through a power line;

a first mating interface configured to mate with a first tool interface of a first power tool;

a second adapter interface configured to mate with a second tool interface of a second power tool;

a first switching structure electrically connected to the input terminal, the first switching structure being switchable between a first state and a second state; and

a second switching structure electrically connected to the input, the second switching structure being switchable between a first state and a second state;

when the first power tool is connected with the adapter, the first tool interface is matched with the first adapting interface, the first switching structure is in a second state, and the adapter outputs a first voltage to the first power tool;

when the second power tool is connected to the adapter, the second tool interface is mated with the second mating interface, the second switch structure is in a second state, and the adapter outputs a second voltage to the second power tool.

2. The power supply system according to claim 1, wherein the battery pack comprises a single-voltage battery pack and/or a double-voltage battery pack, the single-voltage battery pack can output a voltage externally, the single-voltage battery pack is provided with a single-voltage battery pack terminal, and the single-voltage battery pack terminal comprises a positive terminal and a negative terminal; the dual-voltage battery pack can output two voltages externally, a dual-voltage battery pack terminal is arranged on the dual-voltage battery pack, and the dual-voltage battery pack terminal comprises two positive terminals and two negative terminals.

3. The power supply system according to claim 2, further comprising a housing, wherein a first battery pack cavity, a second battery pack cavity and a third battery pack cavity are provided in the housing, the first battery pack cavity, the second battery pack cavity and the third battery pack cavity are used for mounting the battery pack, a first insertion sheet seat and a second insertion sheet seat matched with the single-voltage battery pack terminal are respectively provided in the first battery pack cavity and the second battery pack cavity, and a third insertion sheet seat matched with the double-voltage battery pack terminal is provided in the third battery pack cavity.

4. The power supply system of claim 1, wherein the adapter comprises a first cover, a second cover, and a mounting bracket disposed between the first cover and the second cover, wherein the first mating interface is disposed on the first cover, and wherein the first mating interface comprises a first output; the second adaptive interface is arranged on the second cover body and comprises a second output end; the first switching structure is arranged on one side, facing the first cover body, of the fixed support, and the second switching structure is arranged on one side, facing the second cover body, of the fixed support.

5. The power supply system according to claim 4, wherein the first switching structure comprises a first switching portion and a first switching socket engaged with the first switching portion, the first switching portion comprises a first sliding seat, a first sliding rod connected with the first sliding seat, a first spring sleeved on the first sliding rod, and a first switching terminal disposed on the first sliding seat, and a first connection terminal engaged with the first switching terminal is disposed in the first switching socket; when the first switching terminal is separated from the first connecting terminal, the first switching structure is in a first state; when the first switching terminal is connected with the first connecting terminal, the first switching structure is in a second state.

6. The power supply system of claim 5, wherein the first switching structure is mounted on the fixing bracket by a first PCB, the first connection terminal is electrically connected with the input terminal by the first PCB, and the first switching terminal is electrically connected with the first output terminal by a wire.

7. The power supply system according to claim 4, wherein the second switching structure comprises a second switching portion and a second switching socket engaged with the second switching portion, the second switching portion comprises a second sliding seat, a second sliding rod connected with the second sliding seat, a second spring sleeved on the second sliding rod, and a second switching terminal disposed on the second sliding seat, and a second connection terminal engaged with the second switching terminal is disposed in the second switching socket; when the second switching terminal is separated from the second connecting terminal, the second switching structure is in a first state; when the second switching terminal is connected with the second connecting terminal, the second switching structure is in a second state.

8. The power supply system of claim 7, wherein the second switching structure is mounted on the fixing bracket by a second PCB, the second connection terminal is electrically connected to the input terminal by the second PCB, and the second switching terminal is electrically connected to the second output terminal by a wire.

9. The power supply system according to claim 4, wherein a first groove is formed in a position of the first cover corresponding to the first output end, and a first button spring connected with the first button are arranged at an end of the first cover facing away from the first groove.

10. The power supply system according to claim 9, wherein a second groove is formed in a position of the second cover corresponding to the second output end, and a second button spring connected to the second button are disposed at an end of the second cover facing away from the second groove.

11. The power supply system of claim 3, wherein the battery pack comprises two single-voltage battery packs mounted in the first battery pack cavity and the second battery pack cavity, respectively.

12. The power supply system of claim 3, wherein the battery pack comprises a dual voltage battery pack mounted within the third battery pack cavity.

13. The power supply system of claim 3, wherein the battery pack comprises a single-voltage battery pack mounted within the first or second battery pack cavity and a dual-voltage battery pack mounted within the third battery pack cavity.

14. The power supply system of claim 3, wherein the battery pack comprises two single-voltage battery packs mounted in the first and second battery pack cavities, respectively, and a dual-voltage battery pack mounted in the third battery pack cavity.

15. The power supply system according to claim 3, wherein a connection terminal is provided on the housing, and the first, second and third insert seats are electrically connected to the connection terminal, respectively.

16. The power supply system according to claim 15, wherein the connection terminal is provided with a fool-proof structure, the housing is provided with a mounting hole corresponding to the connection terminal, and the connection terminal is fixed on the mounting hole.

17. The power supply system according to claim 16, wherein a first connection port matching with the connection terminal is provided at an end of the power supply line connected to the battery pack, and a second connection port matching with the input terminal is provided at an end of the power supply line connected to the input terminal.

18. A power tool system, comprising:

a battery pack;

an adapter electrically connected to the battery pack;

a first power tool having a first tool interface disposed thereon;

a second power tool having a second tool interface disposed thereon;

the adapter includes:

a first adapter interface configured to mate with the first tool interface;

a second adapter interface configured to mate with the second tool interface;

a first switching structure electrically connected to the input terminal, the first switching structure being switchable between a first state and a second state;

when the first power tool is connected with the adapter, the first tool interface is matched with the first adaptive interface, the first switching structure is in the second state, and the adapter outputs a first voltage to the first power tool;

when the second electric tool is connected with the adapter, the second tool interface is matched with the second adaptive interface, the second switching structure is in a second state, and the adapter outputs a second voltage to the second electric tool.

19. The power tool system of claim 18, wherein the first tool interface includes a first tool plug and the second tool interface includes a second tool plug.

20. The power tool system of claim 18, further comprising a backpack assembly including a strap for carrying the battery pack and a waist belt connected to the strap.