Dual-voltage battery pack and electric tool system

Abstract

The invention relates to a dual-voltage battery pack and an electric tool system. According to the technical scheme, the dual-voltage battery pack comprises a first shell; the second shell is connected to the first shell and forms an assembly space together with the first shell; the bracket is accommodated in the assembly space; at least part of the battery cell group is supported by the bracket; the operation part is arranged on the second shell; the operating piece is connected to the operating part in a sliding manner and is provided with a pressing part and a locking part; the matching part is arranged on the second shell and provided with a first output port and a second output port, the first output port can output two kinds of voltage, the second output port can only output the first voltage, and the effect of improving the compatibility between the battery packs is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of power tools, and particularly to a dual-voltage battery pack and a power tool system. Background Art

[0002] With the development of cordless power tools, battery packs that supply power to power tools through battery packs have emerged. Cordless power tools have quickly occupied the power tool market with their portable features. Currently, power tools are limited by the output voltage of the battery pack and cannot further increase the output power of the power tools.

[0003] In traditional technologies, in order to solve the problem of limited output power of power tools, the method of increasing the voltage of the battery pack on the basis of the existing battery pack is often used to increase the output power of the power tools.

[0004] However, the current method of increasing the voltage of the battery pack will result in an increasing number of types of battery packs, thus making the pairing between power tools and battery packs relatively cumbersome. Summary of the Invention

[0005] Based on this, in view of the problem of excessive types of battery packs, it is necessary to provide a dual-voltage battery pack and a power tool system.

[0006] To solve the above technical problems, the present application is implemented as follows: In one embodiment, a dual-voltage battery pack is provided. The dual-voltage battery pack includes: A first housing; A second housing connected to the first housing and jointly forming an assembly space with the first housing; A bracket received in the assembly space; A battery cell group, at least partially supported by the bracket; An operation part provided on the second housing; An operating member slidably connected to the operation part and having a pressing part and a locking part; A mating part provided on the second housing and having a first output port and a second output port. The first output port can output two voltages, and the second output port can only output the first voltage.

[0007] In some preferred embodiments, the first output port includes a first positive pin, a second positive pin, a first negative pin, and a second negative pin; the battery cell group includes a first battery cell group composed of a plurality of battery cells connected in series and a second battery cell group composed of a plurality of battery cells connected in series. The first battery cell group has a first positive electrode and a first negative electrode, and the second battery cell group has a second positive electrode and a second negative electrode. The first positive electrode is connected to the first positive pin, the first negative electrode is connected to the first negative pin, the second positive electrode is connected to the second positive pin, and the second negative electrode is connected to the second negative pin.

[0008] In some preferred embodiments, the mating portion includes a protruding portion and a conversion component. The first output port is located at the protruding portion. The conversion component includes a main body portion and a male terminal connected to the first output port. The mating portion has two states. When the mating portion is in the first state, the conversion component is separated from the protruding portion, and the second output port can output two voltages. When the mating portion is in the second state, the conversion component is coupled to the protruding portion, and the first output port can output one voltage. The second output port is located on the conversion component, and the second output port includes a female terminal for outputting the first voltage after being converted by the conversion component.

[0009] In some preferred embodiments, the male terminal is a blade, and the female terminal is a pin. The male terminal includes a first positive terminal, a second positive terminal, a first negative terminal, and a second negative terminal. The female terminal includes a total positive terminal and a total negative terminal. The first positive terminal is connected to the second positive terminal, the first negative terminal is connected to the second negative terminal, the first positive terminal or the second positive terminal is connected to the total positive terminal, and the first negative terminal or the second negative terminal is connected to the total negative terminal. There is no locking portion on the conversion component.

[0010] In some preferred embodiments, the conversion component includes a first half shell and a second half shell. The first half shell and the second half shell are detachably connected. The first half shell is the upper half shell, and the second half shell is the lower half shell. The first half shell and the second half shell are fixedly connected by bolts, and a handle portion is provided on the conversion component.

[0011] In some preferred embodiments, a circuit board is provided inside the conversion component. The male terminal is fixed on the circuit board by welding, the female terminal is fixed on the circuit board by welding, and the connection between the male terminal and the female terminal is electrically connected through the circuit inside the circuit board.

[0012] In some preferred embodiments, the conversion component further includes a first plane, which is a vertical plane perpendicular to the extending direction of the male terminal, and at least part of the projection range of the male terminal in the first plane coincides with the projection range of the female terminal in the first plane.

[0013] In some preferred embodiments, the centerlines of the first positive pin, the second positive pin, the first negative pin, and the second negative pin define a second plane, and the second plane is collinear or parallel to the plane where the centerline of the male terminal is located; the centerlines of the male terminal and the female terminal are collinear or parallel; when the conversion component is connected to the protruding portion, the top surface of the main body portion is lower than the surface of the protruding portion or flush with the surface of the protruding portion.

[0014] In some preferred embodiments, a docking member is provided on the conversion component, and a docking portion for accommodating the docking member is provided on the second housing; a fixing member is provided on the conversion component, and a fixing portion for accommodating the fixing member is provided on the second housing.

[0015] In some preferred embodiments, a first guide groove is provided on the protruding portion, and a second guide groove is provided on the conversion component. When the conversion component is coupled to the protruding portion, the first guide groove communicates with the second guide groove.

[0016] In some preferred embodiments, a slide rail is provided on one of the conversion component or the second housing, and a slide groove for inserting the slide rail is provided on the other. The extending direction of the slide groove is parallel or collinear with the extending direction of the first guide groove.

[0017] Based on the same inventive concept, the present application also discloses an electric tool system, including: A first electric tool connected to the second output port of the dual-pressure battery pack according to any one of the above embodiments; A first battery pack capable of being directly connected to the first electric tool and capable of providing an adapted first voltage to the first electric tool.

[0018] In some preferred embodiments, the first output port includes a first positive pin, a second positive pin, a first negative pin, and a second negative pin; the battery cell group includes a first battery cell group formed by connecting a plurality of battery cells in series and a second battery cell group formed by connecting a plurality of battery cells in series. The first battery cell group has a first positive electrode and a first negative electrode, and the second battery cell group has a second positive electrode and a second negative electrode. The first positive electrode is connected to the first positive pin, the first negative electrode is connected to the first negative pin, the second positive electrode is connected to the second positive pin, and the second negative electrode is connected to the second negative pin; The mating part includes a protruding part and a conversion component. The first output port is located at the protruding part. The conversion component includes a main body part and a male terminal connected to the first output port. The mating part has two forms. When the mating part is in the first form, the conversion component is separated from the protruding part, and the second output port can output two voltages. When the mating part is in the second form, the conversion component is coupled with the protruding part, and the first output port can output one voltage. The second output port is located on the conversion component. The second output port includes a female terminal for outputting the first voltage after being converted by the conversion component. The center lines of the male terminal and the female terminal are collinear or parallel. The male terminal is a blade, and the female terminal is a pin. The male terminal includes a first positive terminal, a second positive terminal, a first negative terminal, and a second negative terminal. The female terminal includes a total positive terminal and a total negative terminal. The first positive terminal is connected to the second positive terminal, the first negative terminal is connected to the second negative terminal, the first positive terminal or the second positive terminal is connected to the total positive terminal, and the first negative terminal or the second negative terminal is connected to the total negative terminal. The conversion component includes a first half-shell and a second half-shell. The first half-shell and the second half-shell are detachably connected. The first half-shell is the upper half-shell, and the second half-shell is the lower half-shell. The first half-shell and the second half-shell are fixedly connected by bolts. A gripping part is provided on the conversion component. A circuit board is provided inside the conversion component. The male terminal is fixed on the circuit board by welding, the female terminal is fixed on the circuit board by welding, and the connection between the male terminal and the female terminal is electrically connected through the circuit inside the circuit board. The conversion component further includes a first plane, which is a vertical plane perpendicular to the extending direction of the male terminal. The projection range of the male terminal in the first plane at least partially coincides with the projection range of the female terminal in the first plane. The center lines of the first positive pin, the second positive pin, the first negative pin, and the second negative pin define a second plane, which is collinear or parallel to the plane where the center line of the male terminal is located. When the conversion component is connected to the protruding part, the top surface of the main body part is lower than or flush with the surface of the protruding part. A docking part is provided on the conversion component, and a docking portion for accommodating the docking part is provided on the second housing. A fixing part is provided on the conversion component, and a fixing portion for accommodating the fixing part is provided on the second housing. A first guide groove is provided on the protruding part, and a second guide groove is provided on the conversion component. When the conversion component is coupled with the protruding part, the first guide groove communicates with the second guide groove. One of the conversion component or the second housing is provided with a slide rail, and the other is provided with a chute for inserting the slide rail. The extending direction of the chute is parallel or collinear with the extending direction of the first guide groove.

[0019] In some preferred embodiments, it further includes: A second power tool, directly connected to the first output port of the dual-voltage battery pack and receiving a second voltage different from the first voltage; A third power tool, directly connected to the first output port of the dual-voltage battery pack and receiving the first voltage; A second battery pack, capable of being connected to the second power tool and providing the second voltage to the second power tool.

[0020] In some preferred embodiments, when the dual-voltage battery pack is connected to the first power tool, a receiving space for receiving the conversion component is formed between the protruding portion and the first power tool.

[0021] In some preferred embodiments, the first power tool is provided with a connecting portion, and the connecting portion is provided with a plugging groove for inserting the locking portion; the connecting portion is provided with a first plugging portion. When the dual-voltage battery pack is connected to the first power tool, the conversion component is clamped between the first plugging portion and the operating portion.

[0022] In some preferred embodiments, the top surface of the dual-voltage battery pack and the inner bottom surface of the connecting portion jointly define the receiving space; and / or, the end wall of the protruding portion and the side wall of the first plugging portion facing the protruding portion jointly define the receiving space.

[0023] In some preferred embodiments, the connecting portion is provided with a first guide rail. One first guide rail is provided on each of the two sides in the width direction of the connecting portion. The two first guide rails define the receiving space; the height of the receiving space is less than or equal to the maximum value of the distance from the bottom wall of the first power tool to the dual-voltage battery pack; the width of the receiving space is less than or equal to the maximum value of the distance between the two first guide rails, and the length of the receiving space is less than or equal to the maximum value of the distance from the protruding portion to the first plugging portion.

[0024] In some preferred embodiments, when the first power tool is connected to the second output port, the conversion component is not exposed outside the first power tool and / or the dual-voltage battery pack, and the conversion component is completely received in the receiving space; the first guide rail is simultaneously inserted into the first guide groove and the second guide groove.

[0025] In some preferred embodiments, the second power tool is provided with an assembly portion connected to the dual-voltage battery pack. The assembly portion is provided with a second guide rail adapted to the first guide groove and a third guide rail adapted to the chute. The horizontal plane where the second guide rail is located and the horizontal plane where the third guide rail is located are not coplanar; a closing portion is provided at one end of the third guide rail of the assembly portion.

[0026] In some preferred embodiments, the second power tool cannot be coupled to the second output port; the second power tool is provided with a second plugging portion; the first output port can be connected to the second plugging portion or the male terminal, the second output port can be connected to the first plugging portion, and the positions of the first plugging portion and the second plugging portion are different; the first output port cannot provide the first voltage for the first power tool.

[0027] In some preferred embodiments, the first plugging portion is located at a position farther from the operation portion than the second plugging portion with respect to the dual-voltage battery pack.

[0028] In some preferred embodiments, the height of the conversion component is less than or equal to the maximum value of the distance between the bottom wall of the first power tool and the dual-voltage battery pack; the width of the conversion component is less than or equal to the maximum value of the distance between the two first guide rails, and the length of the conversion component is less than or equal to the maximum value of the distance between the protruding portion and the first plugging portion.

[0029] In some preferred embodiments, when the first power tool is connected to the dual-voltage battery pack, at least part of the projection range of the conversion component in the first plane coincides with the projection range of the protruding portion in the first plane.

[0030] In some preferred embodiments, the center lines of the first positive pin, the second positive pin, the first negative pin, and the second negative pin define a second plane, and the second plane is collinear or parallel to the plane where the center line of the male terminal is located; when the conversion component is connected to the protruding portion, the top surface of the main body portion is lower than or flush with the surface of the protruding portion; the projection range of the conversion component in the first plane is located within the projection range of the protruding portion in the first plane.

[0031] In some preferred embodiments, when the first power tool is connected to the dual-voltage battery pack through the conversion component, the conversion component is not exposed outside the first power tool and / or the dual-voltage battery pack; when the conversion component is connected to the dual-voltage battery pack, the second power tool cannot be coupled to the dual-voltage battery pack; when the dual-voltage battery pack is not connected to the conversion component, the dual-voltage battery pack cannot provide the first voltage for the first power tool; the first power tool is provided with a first plug portion, and the second power tool is provided with a second plug portion; the mating portion is used to connect to the male terminal or the second plug portion; the positions of the first plug portion and the second plug portion are different; the first plug portion is located at a position farther from the operation portion than the second plug portion with respect to the dual-voltage battery pack.

[0032] In the embodiments of the present application, through the first output port and the second output port in the dual-voltage battery pack, power tools with two or more voltages can be effectively adapted, thereby effectively alleviating the problem of mismatch between the battery pack and the power tool caused by voltage mismatch. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the main structure of the dual-voltage battery pack in an embodiment of the present application; Figure 2 It is a schematic diagram of the cross-sectional structure of the dual-voltage battery pack in an embodiment of the present application; Figure 3 It is a schematic diagram of the main structure of the dual-voltage battery pack after removing the conversion component in an embodiment of the present application; Figure 4 It is an exploded view of the dual-voltage battery pack in an embodiment of the present application; Figure 5 It is a schematic diagram of another perspective of the exploded structure of the dual-voltage battery pack in an embodiment of the present application; Figure 6 It is an exploded view of the conversion component in an embodiment of the present application; Figure 7 It is a schematic diagram of the main structure of the dual-voltage battery pack after removing the conversion component in an embodiment of the present application; Figure 8 It is a schematic diagram of the structure of the power tool system in an embodiment of the present application; Figure 9 It is a schematic diagram of the cross-sectional structure when the first power tool is assembled with the dual-voltage battery pack in an embodiment of the present application; Figure 10 It is a schematic diagram of the cross-sectional structure when the second power tool is assembled with the dual-voltage battery pack in an embodiment of the present application.

[0034] Description of the Drawings: 1. Dual-pressure battery pack; 11. First housing; 12. Second housing; 13. Bracket; 14. Battery cell group; 141. First battery cell group; 142. Second battery cell group; 15. Operation part; 16. Operating member; 161. Pressing part; 162. Locking part; 17. Connecting part; 171. Protruding part; 1711. First positive pin; 1712. Second positive pin; 1713. First negative pin; 1714. Second negative pin; 172. Receiving groove; 173. First guide groove; 174. Slide groove; 18. Docking part; 19. Fixing part; 2. Conversion component; 20. Gripping part; 21. First half shell; 22. Second half shell; 23. Male terminal; 231. First positive terminal; 232. Second positive terminal; 233. First negative terminal; 234. Second negative terminal; 24. Female terminal; 241. Total positive terminal; 242. Total negative terminal; 25. Circuit board; 26. Docking member; 27. Fixing member; 28. Second guide groove; 29. Slide rail; 3. Electric tool system; 31. First electric tool; 311. Connecting part; 3110. Insertion slot; 3111. First guide rail; 312. First insertion part; 32. First battery pack; 33. Second electric tool; 331. Assembly part; 332. Second insertion part; 333. Second guide rail; 334. Third guide rail; 335. Enclosing part; 34. Third electric tool. Detailed Description of the Invention

[0035] In order to make the above objects, features, and advantages of the present application more obvious and understandable, the following detailed description of the specific embodiments of the present application will be given in conjunction with the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0036] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present application.

[0037] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of this application, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0038] In this application, unless otherwise clearly defined and limited, terms such as "installed", "connected", "joined", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0039] In this application, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0040] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation.

[0041] A dual-voltage battery pack 1 and a power tool system 3 disclosed in an embodiment of this application, wherein the dual-voltage battery pack 1 is compatible with at least two power tools.

[0042] Refer to Figure 1 and Figure 2, FIG. 1 shows a schematic diagram of the main structure of a dual-voltage battery pack in an embodiment of the present application, and FIG. 2 shows a schematic cross-sectional structure of the dual-voltage battery pack in an embodiment of the present application. A dual-voltage battery pack 1 provided in an embodiment of the present application includes a first housing 11, a second housing 12, a bracket 13, a battery cell group 14, an operation part 15, an operating member 16, and a mating part 17. Among them, the first housing 11 and the second housing 12 are connected to each other to form an assembly space for accommodating the bracket 13. The first housing 11 can be the left half shell or the lower half shell, and the second housing 12 can be the right half shell or the upper half shell. As long as the first housing 11 and the second housing 12 can be connected to each other to facilitate the formation of the assembly space, the present application takes the first housing 11 and the second housing 12 as the upper and lower half shells as an example for explanation. The bracket 13 can be fixed in the assembly space by bolts, and the battery cell group 14 is arranged on the bracket 13 to be supported by the bracket 13. An operation part 15 is formed on the second housing 12 and / or the first housing 11. The operation part 15 can protrude from the surface of the second housing 12. The operating member 16 is slidably connected to the operation part 15 and has a pressing part 161 and a locking part 162. Among them, both the pressing part 161 and the locking part 162 are exposed outside the second housing 12. The pressing part 161 is connected to the locking part 162. In particular, the pressing part 161 and the locking part 162 are integrally formed, and the locking part 162 is driven to move by pressing the pressing part 161. Specifically, an elastic member can be arranged at the bottom of the pressing part 161 in the assembly space, and the elastic member provides an elastic force for the pressing part 161 to return to its original position.

[0043] The mating part 17 is arranged on the surface of the second housing 12 and on one side of the operation part 15. The mating part 17 is used to connect with a power tool. The mating part 17 has a first output port and a second output port. Among them, the first output port can output two voltages, and the output of these two voltages requires the cooperation of the power tool side to output a suitable voltage, while the second output port can only output one voltage, that is, the first voltage.

[0044] In some other preferred embodiments, the mating part 17 includes a protruding part 171 and a conversion component 2. Among them, the protruding part 171 is integrally formed on the second housing 12, the conversion component 2 can be installed on the protruding part 171, the first output port can be located on the protruding part 171, and the second output port can be located on the conversion component 2. By connecting the conversion component 2 to the protruding part 171, the voltage and connection method output by the first output port are converted into a suitable way for the power tool.

[0045] In some or other preferred embodiments, the mating part 17 has two forms. When the mating part 17 is in the first form, the conversion component 2 disengages from the protruding part 171, and the second output port can output two voltages with the cooperation on the side of the power tool; when the mating part 17 is in the second form, the conversion component 2 is coupled to the protruding part 171, and the first output port can output one voltage. The second output port includes a female terminal 24 for outputting the first voltage after being converted by the conversion component 2.

[0046] Refer to Figure 3 and Figure 4 , FIG. 3 shows a schematic diagram of the main structure of the dual-voltage battery pack after removing the conversion component in an embodiment of the present application, and FIG. 4 shows an exploded structure diagram of the dual-voltage battery pack in an embodiment of the present application. In some or other preferred embodiments, a receiving groove 172 may be formed at one end of the protruding part 171 of the second housing 12 away from the operating part 15, and the conversion component 2 may be located in the receiving groove 172; the first output port may be located on the side wall of the protruding part 171 close to the receiving groove 172. The first output port may include a first positive pin 1711, a second positive pin 1712, a first negative pin 1713, and a second negative pin 1714; the battery cell group 14 may include a plurality of battery cells connected in series to form a first battery cell group 141 and a plurality of battery cells connected in series to form a second battery cell group 142. The first battery cell group 141 may have a first positive electrode and a first negative electrode, and the second battery cell group 142 may have a second positive electrode and a second negative electrode. The first positive electrode may be connected to the first positive pin 1711, the first negative electrode may be connected to the first negative pin 1713, the second positive electrode may be connected to the second positive pin 1712, and the second negative electrode may be connected to the second negative pin 1714. At this time, through the combination of the first positive pin 1711, the second positive pin 1712, the first negative pin 1713, and the second negative pin 1714, connecting the first positive pin 1711 and the second positive pin 1712, and connecting the first negative pin 1713 and the second negative pin 1714, the parallel connection of the first battery cell group 141 and the second battery cell group 142 can be achieved, thereby outputting the first voltage; connecting the first positive pin 1711 and the second negative pin 1714, and using the first negative pin 1713 and the second positive pin 1712 as outputs, the series connection of the first battery cell group 141 and the second battery cell group 142 can be achieved, thereby outputting the second voltage. Among them, the first battery cell group 141 may be composed of 3, 4, 5, 6 or any number of battery cells. Similarly, the number of battery cells in the second battery cell group 142 may be the same as the number of battery cells in the first battery cell group 141.

[0047] The following part will elaborate in detail on the conversion component 2 preferentially: In some or other preferred embodiments, a gripping portion 20 may be provided on the conversion member 2. The gripping portion 20 here may be a gripping block protruding from the conversion member 2 or a gripping groove recessed in the surface of the conversion member 2, as long as the gripping portion 20 facilitates the operator's gripping or allows the fingers to be inserted therein to facilitate removing the conversion member 2 from the protruding portion 171.

[0048] Refer to Figure 5 and Figure 6 , FIG. 5 shows another perspective schematic diagram of the exploded structure of a dual-pressure battery pack in an embodiment of the present application, and FIG. 6 shows a schematic diagram of the exploded structure of the conversion member in an embodiment of the present application. In some or other preferred embodiments, the conversion member 2 may include a main body portion, a male terminal 23, and a female terminal 24. Among them, the main body portion may include a first half shell 21 and a second half shell 22. Among them, the first half shell 21 and the second half shell 22 may be arranged up and down, or may be arranged left and right or front and back, and may even be arranged in a semi-surrounding manner. For example, a groove for embedding the second half shell 22 is opened on the first half shell 21, and the second half shell 22 is installed in the groove. In order to facilitate the installation of the components inside the first half shell 21 and the second half shell 22 in the embodiments of the present application, a semi-surrounding arrangement is preferably adopted. The first half shell 21 and the second half shell 22 may be fixedly connected by bolts, so as to facilitate the disassembly of the first half shell 21 and the second half shell 22.

[0049] In some or other preferred embodiments, the conversion member 2 does not have a locking portion 162. The locking portion 162 here may be the same or similar structure as the locking portion 162 on the operating portion 15. The locking portion 162 is a component for positioning when connecting with an electric tool. The conversion member 2 in the embodiments of the present application does not have the locking portion 162 here, that is, the conversion member 2 does not have a structure for cooperating and fixing with the locking groove on the electric tool.

[0050] In some or other preferred embodiments, the male terminal 23 can be embedded in the main body portion, that is, installed inside the first half shell 21 and the second half shell 22. The male terminal 23 can include a first positive terminal 231, a second positive terminal 232, a first negative terminal 233, and a second negative terminal 234. The female terminal 24 can include a total positive terminal 241 and a total negative terminal 242. Preferably, inside the space formed by the first half shell 21 and the second half shell 22, the first positive terminal 231 can be connected to the second positive terminal 232, the first negative terminal 233 can be connected to the second negative terminal 234, the first positive terminal 231 or the second positive terminal 232 can be connected to the total positive terminal 241, and the first negative terminal 233 or the second negative terminal 234 can be connected to the total negative terminal 242. At this time, when the conversion component 2 is connected to the protruding portion 171, the male terminal 23 is inserted into the first output port, and the first battery cell group 141 and the second battery cell group 142 can be connected in parallel, thereby outputting a first voltage.

[0051] In some or other preferred embodiments, for the convenience of connecting the male terminal 23 to the first output port and connecting the second output port to the power tool, the male terminal 23 can be a blade, and the female terminal 24 can be a pin, so that the cooperation between the blade and the pin makes the cooperation more compact.

[0052] In some or other preferred embodiments, a circuit board 25 can also be connected in the space formed inside the first half shell 21 and the second half shell 22 of the conversion component 2. The circuit board 25 is a printed circuit board, and pads and conductive paths can be provided on the circuit board 25. Both the male terminal 23 and the female terminal 24 can be fixed on the circuit board 25 by welding. In particular, the connection between the male terminal 23 and the female terminal 24 is electrically connected through the circuit inside the circuit board 25, so as to facilitate the miniaturization of the conversion component 2 and / or facilitate the fixation of the male terminal 23 and the female terminal 24.

[0053] Refer to Figure 6 and 7 , FIG. 7 shows a schematic cross-sectional structure diagram of another position of the dual-voltage battery pack in an embodiment of the present application, and FIG. 6 shows an exploded structure diagram of the conversion component in an embodiment of the present application. In some or other preferred embodiments, the conversion component 2 further includes a first plane, and the first plane is a vertical plane perpendicular to the length extension direction of the male terminal 23. Among them, at least part of the projection range of the male terminal 23 in the first plane coincides with at least part of the projection range of the female terminal 24 in the first plane. Here, the projection range refers to all ranges projected along the direction perpendicular to the first plane and extending outward along the horizontal direction. That is, at least part of the projection range of the male terminal 23 in the first plane overlaps with the projection range of the female terminal 24, thereby reducing the size of the conversion component 2 in height. In particular, the projection range of the male terminal 23 completely coincides with the projection range of the female terminal 24.

[0054] In some or other preferred embodiments, the center lines of the male terminal 23 and the female terminal 24 are collinear or parallel, that is, the insertion direction of the female terminal 24 is collinear or parallel with the insertion direction of the male terminal 23.

[0055] In some or other preferred embodiments, the projection range of the protrusion 171 in the first plane at least partially coincides with the projection range of the female terminal 24 in the first plane. Here, the projection range refers to all ranges projected along a direction perpendicular to the first plane and extending outward in parallel to the horizontal direction, that is, the projection range of the female terminal 24 in the first plane at least partially overlaps with the projection range of the protrusion 171, thereby reducing the size of the conversion component 2 in height. In particular, the projection range of the female terminal 24 is located within the projection range of the protrusion 171.

[0056] In some or other preferred embodiments, the center lines of the first positive pin 1711, the second positive pin 1712, the first negative pin 1713, and the second negative pin 1714 define a second plane, and the second plane is collinear or parallel with the plane where the center line of the male terminal 23 is located, that is, the insertion directions of the first positive pin 1711, the second positive pin 1712, the first negative pin 1713, and the second negative pin 1714 are collinear or parallel with the insertion direction of the male terminal 23.

[0057] In some or other preferred embodiments, when the conversion component 2 is connected to the protrusion 171, the top surface of the main body portion is lower than or flush with the surface of the protrusion 171. Preferably, in the embodiment of the present application, the top surface of the main body portion is flush with the surface of the protrusion 171, so that there is no obstacle when the battery pack is connected to the power tool.

[0058] Refer to Figure 4 and 5 In some or other preferred embodiments, a docking member 26 is provided on the main body portion of the conversion component 2. The docking member 26 can be integrally formed on the first half shell 21; a docking portion 18 is provided on the second housing 12 located on the protrusion 171. One of the docking member 26 and the docking portion 18 can be a convex block, and the other can be a groove. In the embodiment of the present application, the docking member 26 is a convex block protruding from the surface of the first half shell 21, and the docking portion 18 is a groove recessed from the surface of the protrusion 171, and the docking member 26 cooperates with the docking portion 18.

[0059] In some other preferred embodiments, a fixing member 27 is provided on the main body of the conversion member 2. The fixing member 27 can be located on the first half shell 21 or the second half shell 22. A fixing portion 19 is formed on the second housing 12. One of the docking member 26 and the docking portion 18 can be a convex block, and the other can be a groove. In the embodiment of the present application, the fixing member 27 is a convex block that can selectively protrude from the surface of the second half shell 22, and the fixing portion 19 is a groove recessed from the surface of the second housing 12. The fixing member 27 can be driven by an elastic member. Here, the elastic member can be an elastic component such as a spring, a leaf spring, a rubber member, or an elastic cantilever. One end of the cantilever is integrally formed with the second half shell 22, and the fixing member 27 is located at the other end, so that the cantilever has elasticity to snap the fixing member 27 into the fixing portion 19.

[0060] In some other preferred embodiments, a first guide groove 173 can be provided on the second housing 12 located on the protruding portion 171. The first guide groove 173 can be formed by a first guiding portion integrally formed on the protruding portion 171 and the surface of the second housing 12. A second guide groove 28 is provided on the main body of the conversion member 2. The second guide groove 28 can be formed by a second guiding portion integrally formed on the first half shell 21 and the side wall of the main body. When the conversion member 2 is coupled to the protruding portion 171, the first guide groove 173 communicates with the second guide groove 28.

[0061] In some other preferred embodiments, a slide rail 29 is provided on either the main body of the conversion member 2 or the second housing 12, and a slide groove 174 is provided on the other. In the embodiment of the present application, the case where the slide rail 29 is provided on the main body is taken as an example for illustration. The slide rail 29 is located on the side wall of the second half shell 22, and one is provided on each side. Of course, in order to improve the structural strength, in the embodiment of the present application, the slide rails 29 can also be all located on the side wall of the first half shell 21. The slide groove 174 is located on the surface of the second housing 12. The slide rail 29 and the slide groove 174 are adapted to guide the conversion member 2 and / or fix the position of the conversion member 2 relative to the second housing 12 in the vertical direction.

[0062] In some other preferred embodiments, the extending direction of the slide groove 174 can be parallel or collinear with the extending direction of the first guide groove 173. In the embodiment of the present application, the extending direction of the slide groove 174 is parallel to the extending direction of the first guide groove 173.

[0063] Based on the same concept, the present application also discloses an electric tool system 3. Refer to Figure 8, FIG. 8 shows a schematic diagram of the structure of an electric tool system in an embodiment of the present application. Among them, the electric tool system 3 includes a first electric tool 31. For the sake of distinction, the electric tool adapted to the second output port is specifically named the first electric tool 31. The first electric tool 31 can be connected to the second output port of the dual-voltage battery pack 1 disclosed in any of the above embodiments.

[0064] In some other preferred embodiments, the electric tool system 3 further includes a first battery pack 32. The first battery pack 32 can be directly connected to the first electric tool 31. The first battery pack 32 can supply a first voltage to the first electric tool 31. The second output port of the dual-voltage battery pack 1 can also supply a first voltage to the first electric tool 31.

[0065] In some other preferred embodiments, the above electric tool system 3 further includes a second electric tool 33. The second electric tool 33 can be directly connected to the first output port of the dual-voltage battery pack 1, that is, the first output port of the dual-voltage battery pack 1 can output a second voltage different from the first voltage to the second electric tool 33. Here, the second electric tool 33 forms an adapted second voltage by connecting two sets of battery cell groups 14 in series through an internal structure.

[0066] In some other preferred embodiments, the above electric tool system 3 further includes a third electric tool 34. The third electric tool 34 can be directly connected to the first output port of the dual-voltage battery pack 1, that is, the first output port of the dual-voltage battery pack 1 can output a first voltage to the third electric tool 34. Although the operating voltage of the third electric tool 34 here is the same as that of the first electric tool 31, the structure of the sole is different when connected to the dual-voltage battery pack 1. Here, the third electric tool 34 forms an adapted first voltage by connecting two sets of battery cell groups 14 in parallel through an internal structure.

[0067] In some other preferred embodiments, the above electric tool system 3 further includes a second battery pack. The second battery pack can be connected to the second electric tool 33 and provide a second voltage to the second electric tool 33, that is, the second battery pack has a structure adapted to the sole of the second electric tool 33 and can supply a second voltage to the second electric tool 33 at the same time.

[0068] In some other preferred embodiments, when the dual-voltage battery pack 1 is connected to the first electric tool 31, a receiving space is formed between the protruding portion 171 and the first electric tool 31. Here, the receiving space can receive the conversion component 2.

[0069] In some or other preferred embodiments, the first power tool 31 is provided with a connecting portion 311. The connecting portion 311 can be the sole of the first power tool 31 and is used to connect with the double-press battery pack 1 or the first battery pack 32. A plugging slot 3110 can be formed on the connecting portion 311, and the locking portion 162 can be inserted into the plugging slot 3110 to lock the position of the double-press battery pack 1 or the first battery pack 32. The third power tool 34 can also have a plugging slot 3110, and the plugging slot 3110 here can be the same as the plugging slot 3110 of the first power tool 31.

[0070] In some or other preferred embodiments, the connecting portion 311 can be provided with a first plugging portion 312, and a tab that can be inserted into the second output port is provided on the first plugging portion 312. When the first power tool 31 is connected to the double-press battery pack 1, the conversion component 2 is clamped between the first plugging portion 312 and the operating portion 15, so that the conversion component 2 is fixed between the double-press battery pack 1 and the first power tool 31 in this way.

[0071] Refer to Figure 8 and Figure 9 , FIG. 9 shows a schematic cross-sectional structure diagram when the first power tool and the double-press battery pack are assembled in an embodiment of the present application. In some or other preferred embodiments, the top surface of the double-press battery pack 1 and the inner bottom surface of the connecting portion 311 jointly define the receiving space. Here, the top surface of the double-press battery pack 1 refers to the top surface of the second housing 12 rather than the top surface of the protruding portion 171, and the protruding portion 171 is configured to protrude from the surface of the second housing 12. The space between the top surface of the double-press battery pack 1 and the bottom surface of the connecting portion 311 defines the range of the conversion component 2 in the height direction.

[0072] In some or other preferred embodiments, the end wall of the protruding portion 171 away from the operating portion 15 and the side wall of the first plugging portion 312 facing the protruding portion 171 jointly define the receiving space. The space between the end wall of the protruding portion 171 away from the operating portion 15 and the side wall of the first plugging portion 312 facing the protruding portion 171 defines the range of the conversion component 2 in the length direction.

[0073] In some or other preferred embodiments, the connecting portion 311 can be provided with first guide rails 3111. One first guide rail 3111 is provided on each of the two sides of the plugging slot 3110 of the connecting portion 311 in the width direction. The two first guide rails 3111 jointly define the receiving space, and the two first guide rails 3111 define the range of the receiving space in the width direction.

[0074] In some or other preferred embodiments, when the first power tool 31 is connected to the second output port, the height of the receiving space is less than or equal to the maximum value of the distance between the bottom wall of the first power tool 31 and the dual-pressure battery pack 1; the width of the receiving space is less than or equal to the maximum value of the distance between the two first guide rails 3111; the length of the receiving space is less than or equal to the maximum value of the distance between the protruding portion 171 and the first plugging portion 312, so that the conversion component 2 can be received in the receiving space.

[0075] In some or other preferred embodiments, when the first power tool 31 is connected to the second output port, the conversion component 2 is not exposed outside the first power tool 31 and / or the dual-pressure battery pack 1, that is, when observed from the outside of the first power tool 31 and / or the dual-pressure battery pack 1, the presence of the conversion component 2 cannot be seen, that is, the conversion component 2 is completely received in the receiving space.

[0076] In some or other preferred embodiments, when the first power tool 31 is connected to the second output port, the first guide rails 3111 are commonly inserted into the first guide groove 173 and the second guide groove 28. Preferably, the first guide groove 173 and the second guide groove 28 together form a guide groove adapted to the first guide rails 3111.

[0077] In some or other preferred embodiments, the second power tool 33 is provided with an assembly portion 331 for connecting to the dual-pressure battery pack 1. The assembly portion 331 is also a sole that can be connected to the dual-pressure battery pack 1 or the third battery pack. The assembly portion 311 can also be provided with a plugging groove 3110, and the plugging groove 3110 here can be the same as the plugging groove 3110 of the first power tool 31. The second power tool 33 can be provided with a second plugging portion 332. The assembly portion 331 is provided with a second guide rail 333 adapted to the first guide groove 173 and a third guide rail 334 adapted to the sliding groove 174. The second guide rail 333 is adapted to the first guide groove 173, and the horizontal plane where the second guide rail 333 is located and the horizontal plane where the third guide rail 334 is located are not coplanar In some or other preferred embodiments, the assembly portion 331 is provided with a closing portion 335 at one end of the third guide rail 334. The closing portion 335 can be a convex block located at one end of the third guide rail 334 away from the second guide rail 333, so as to close one end of the third guide rail 334 away from the second guide rail 333 and prevent misplugging.

[0078] Refer to Figure 9 and Figure 10, Figure 10 shows a schematic cross-sectional structure diagram of the second power tool and the dual-pressure battery pack in an embodiment of the present application. In some or other preferred embodiments, due to the presence of the third guide rail 334, when the conversion component 2 is connected to the first output port, the slide rail 29 on the conversion component 2 is inserted into the chute 174, so the third guide rail 334 is blocked by the slide rail 29, and thus the second power tool 33 cannot be coupled to the second output port.

[0079] In some or other preferred embodiments, the first output port can be connected to the second plug portion 332 or the male terminal 23, and the second output port can be connected to the first plug portion 312. Due to the presence of the third guide rail 334, the positions of the first plug portion 312 and the second plug portion 332 are different.

[0080] In some or other preferred embodiments, the first plug portion 312 is located at a position farther from the operation portion 15 than the second plug portion 332 with respect to the dual-pressure battery pack 1. That is, since the second output port on the conversion component 2 can be coupled to the first plug portion 312 only after the conversion component 2 is connected to the first output port, the position of the first plug portion 312 is farther from the operation portion 15, and the position of the second plug portion 332 is closer to the operation portion 15.

[0081] In some or other preferred embodiments, when the conversion component 2 is removed, the slide rail 29 is removed from the chute 174. At this time, although the first power tool 31 can be connected to the dual-pressure battery pack 1 with the conversion component 2 removed, due to the different positions of the first plug portion 312 and the second plug portion 332, the first output port cannot be mated with the first plug portion 312, so the first output port cannot supply power to the first power tool 31.

[0082] In some or other preferred embodiments, the height of the conversion component 2 can be less than or equal to the maximum value of the distance between the bottom wall of the first power tool 31 and the dual-pressure battery pack 1; the width of the conversion component 2 can be less than or equal to the maximum value of the distance between the two first guide rails 3111, and the length of the conversion component 2 can be less than or equal to the maximum value of the distance between the protruding portion 171 and the first plug portion 312, so that the conversion component 2 can be completely accommodated in the accommodation space formed by the dual-pressure battery pack 1 and the first power tool 31.

[0083] In some or other preferred embodiments, at least part of the projection range of the conversion component 2 in the first plane coincides with at least part of the projection range of the protruding portion 171 in the first plane. Here, the projection range refers to all ranges projected along a direction perpendicular to the first plane and extending outward in a horizontal direction parallel to the first plane, that is, at least part of the projection ranges of the conversion component 2 and the protruding portion 171 overlap. In particular, the projection range of the conversion component 2 in the first plane is completely located within the projection range of the protruding portion 171 in the first plane.

[0084] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as falling within the scope described in this specification.

[0085] The above-described embodiments merely represent several implementation manners of the present application. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. A dual-pressure battery pack, characterized in that, The dual-pressure battery pack includes: A first housing; A second housing, connected to the first housing and jointly forming an assembly space with the first housing; A bracket, housed in the assembly space; A battery cell group, at least partially supported by the bracket; An operation part, provided on the second housing; An operating member, slidably connected to the operation part and having a pressing part and a locking part; A mating part, provided on the second housing and having a first output port and a second output port, the first output port capable of outputting two voltages, and the second output port capable of only outputting the first voltage.

2. The dual-pressure battery pack according to claim 1, wherein The first output port includes a first positive pin, a second positive pin, a first negative pin, and a second negative pin; the battery cell group includes a plurality of battery cells connected in series to form a first battery cell group and a plurality of battery cells connected in series to form a second battery cell group, the first battery cell group having a first positive electrode and a first negative electrode, the second battery cell group having a second positive electrode and a second negative electrode, the first positive electrode connected to the first positive pin, the first negative electrode connected to the first negative pin, the second positive electrode connected to the second positive pin, and the second negative electrode connected to the second negative pin; The mating part includes a protruding part and a conversion component, the first output port is located at the protruding part, the conversion component includes a main body part and a male terminal connected to the first output port; the mating part has two forms. When the mating part is in the first form, the conversion component disengages from the protruding part, and the second output port can output two voltages; when the mating part is in the second form, the conversion component is coupled to the protruding part, and the first output port can output one voltage; the second output port is located on the conversion component, and the second output port includes a female terminal for outputting the first voltage after being converted by the conversion component.

3. The dual-pressure battery pack according to claim 2, wherein The male terminal is a plug piece, and the female terminal is a pin; the male terminal includes a first positive terminal, a second positive terminal, a first negative terminal, and a second negative terminal, the female terminal includes a total positive terminal and a total negative terminal, the first positive terminal is connected to the second positive terminal, the first negative terminal and the second negative terminal are connected, the first positive terminal or the second positive terminal is connected to the total positive terminal, and the first negative terminal or the second negative terminal is connected to the total negative terminal; the conversion component does not have a locking part; The conversion component includes a first half shell and a second half shell, the first half shell and the second half shell are detachably connected; the first half shell is an upper half shell, the second half shell is a lower half shell, the first half shell and the second half shell are fixedly connected by bolts, and a finger grip part is provided on the conversion component; A circuit board is provided inside the conversion component, the male terminal is fixed on the circuit board by welding, the female terminal is fixed on the circuit board by welding, and the connection between the male terminal and the female terminal is electrically connected through the circuit inside the circuit board.

4. The dual-pressure battery pack according to claim 2, characterized in that, The conversion component further includes a first plane, the first plane is a vertical plane perpendicular to the extending direction of the male terminal, and at least part of the projection range of the male terminal in the first plane coincides with the projection range of the female terminal in the first plane.

5. The dual-pressure battery pack according to claim 3, characterized in that, The center lines of the first positive pin, the second positive pin, the first negative pin, and the second negative pin define a second plane, and the second plane is collinear or parallel to the plane where the center line of the male terminal is located; the center lines of the male terminal and the female terminal are collinear or parallel; when the conversion component is connected to the protrusion, the top surface of the main body portion is lower than or flush with the surface of the protrusion.

6. The dual-pressure battery pack according to claim 3, wherein, A docking member is provided on the conversion component, and a docking portion for accommodating the docking member is provided on the second housing; a fixing member is provided on the conversion component, and a fixing portion for accommodating the fixing member is provided on the second housing; A first guide groove is provided on the protrusion, and a second guide groove is provided on the conversion component. When the conversion component is coupled to the protrusion, the first guide groove communicates with the second guide groove; A slide rail is provided on one of the conversion component or the second housing, and a chute for inserting the slide rail is provided on the other. The extending direction of the chute is parallel or collinear with the extending direction of the first guide groove.

7. An electric tool system, characterized in that, Comprising: A first power tool, connected to the second output port of the dual-pressure battery pack according to claim 1; A first battery pack, capable of being directly connected to the first power tool and providing a suitable first voltage to the first power tool.

8. The power tool system according to claim 7, wherein The first output port includes a first positive pin, a second positive pin, a first negative pin, and a second negative pin; the battery cell group includes a first battery cell group formed by connecting a plurality of battery cells in series and a second battery cell group formed by connecting a plurality of battery cells in series. The first battery cell group has a first positive electrode and a first negative electrode, and the second battery cell group has a second positive electrode and a second negative electrode. The first positive electrode is connected to the first positive pin, the first negative electrode is connected to the first negative pin, the second positive electrode is connected to the second positive pin, and the second negative electrode is connected to the second negative pin; The mating portion includes a protrusion and a conversion component. The first output port is located on the protrusion. The conversion component includes a main body portion and a male terminal connected to the first output port; the mating portion has two forms. When the mating portion is in the first form, the conversion component is separated from the protrusion, and the second output port can output two voltages; when the mating portion is in the second form, the conversion component is coupled to the protrusion, and the first output port can output one voltage; the second output port is located on the conversion component, and the second output port includes a female terminal for outputting the first voltage after being converted by the conversion component; the center lines of the male terminal and the female terminal are collinear or parallel; The male terminal is a blade, and the female terminal is a pin; the male terminal includes a first positive terminal, a second positive terminal, a first negative terminal, and a second negative terminal. The female terminal includes a total positive terminal and a total negative terminal. The first positive terminal is connected to the second positive terminal, the first negative terminal and the second negative terminal are connected, the first positive terminal or the second positive terminal is connected to the total positive terminal, and the first negative terminal or the second negative terminal is connected to the total negative terminal; The conversion component comprises a first half shell and a second half shell, the first half shell and the second half shell are detachably connected; the first half shell is an upper half shell, the second half shell is a lower half shell, the first half shell and the second half shell are fixedly connected by bolts, and a gripping portion is provided on the conversion component; a circuit board is provided inside the conversion component, the male terminal is fixed to the circuit board by welding, the female terminal is fixed to the circuit board by welding, and the connection between the male terminal and the female terminal is electrically connected through the circuit inside the circuit board; The conversion component further includes a first plane, which is a vertical plane perpendicular to the extension direction of the male terminal, and the projection range of the male terminal in the first plane at least partially overlaps with the projection range of the female terminal in the first plane; The center lines of the first positive pin, the second positive pin, the first negative pin and the second negative pin define a second plane, and the second plane is colinear or parallel to the plane where the center line of the male terminal is located; when the conversion component is connected to the protrusion, the top surface of the main body is lower than the surface of the protrusion or flush with the surface of the protrusion; The conversion component is provided with a docking piece, and the second shell is provided with a docking portion for accommodating the docking piece; the conversion component is provided with a fixing piece, and the second shell is provided with a fixing portion for accommodating the fixing piece; The protrusion is provided with a first guide groove, and the conversion component is provided with a second guide groove, and when the conversion component is coupled with the protrusion, the first guide groove is communicated with the second guide groove; A slide rail is arranged on one of the conversion component or the second shell, and a slide groove for inserting the slide rail is arranged on the other, and an extension direction of the slide groove is parallel or colinear with an extension direction of the first guide groove.

9. The power tool system according to claim 7, characterized in that, Also includes: a second electric tool, directly connected to the first output port of the dual-voltage battery pack and receiving a second voltage different from the first voltage; a third electric tool, directly connected to the first output port of the dual-voltage battery pack and receiving the first voltage; The second battery pack can be connected to a second electric tool and provide the second voltage to the second electric tool.

10. The power tool system according to claim 8, characterized in that, When the dual-pressure battery pack is connected to the first electric tool, an accommodation space for accommodating the conversion component is formed between the protrusion and the first electric tool.

11. The power tool system according to claim 8, wherein, The first electric tool is provided with a connecting part, and the connecting part has an insertion slot for inserting the locking part; the connecting part is provided with a first plug-in part, and when the dual-pressure battery pack is connected to the first electric tool, the conversion component is clamped between the first plug-in part and the operating part.

12. The power tool system according to claim 11, wherein, The top surface of the dual-pressure battery pack and the inner bottom surface of the connecting portion jointly define the receiving space; and / or, the end wall of the protruding portion and the side wall of the first plug-in portion facing the protruding portion jointly define the receiving space.

13. The power tool system according to claim 12, wherein, The connecting portion is provided with first guide rails, one first guide rail is provided on each of the two sides in the width direction of the connecting portion, and the two first guide rails define the accommodating space; the height of the accommodating space is less than or equal to the maximum value of the distance between the bottom wall of the first power tool and the double-pressure battery pack; the width of the accommodating space is less than or equal to the maximum value of the distance between the two first guide rails, and the length of the accommodating space is less than or equal to the maximum value of the distance between the protruding portion and the first plug portion.

14. The power tool system according to claim 13, characterized in that, When the first power tool is connected to the second output port, the conversion component is not exposed outside the first power tool and / or the double-pressure battery pack, and the conversion component is completely accommodated in the accommodating space; the first guide rails are simultaneously inserted into the first guide grooves and the second guide grooves.

15. The power tool system according to claim 14, characterized in that, The second power tool is provided with an assembling portion connected to the double-pressure battery pack. The assembling portion is provided with a second guide rail adapted to the first guide groove and a third guide rail adapted to the sliding groove. The horizontal planes where the second guide rail is located and the horizontal plane where the third guide rail is located are not coplanar; a closing portion is provided at one end of the assembling portion where the third guide rail is located.

16. The power tool system according to claim 15, wherein, The second power tool cannot be coupled to the second output port; the second power tool is provided with a second plug portion; the first output port can be connected to the second plug portion or a male terminal, the second output port can be connected to the first plug portion, and the positions of the first plug portion and the second plug portion are different; the first output port cannot provide the first voltage for the first power tool.

17. The power tool system according to claim 16, wherein, The first plug portion is located at a position farther from the operation portion than the second plug portion with respect to the double-pressure battery pack.

18. The electric tool system according to claim 11, characterized in that, The height of the conversion component is less than or equal to the maximum value of the distance between the bottom wall of the first power tool and the double-pressure battery pack; the width of the conversion component is less than or equal to the maximum value of the distance between the two first guide rails, and the length of the conversion component is less than or equal to the maximum value of the distance between the protruding portion and the first plug portion.

19. The power tool system according to claim 8, wherein When the first power tool is connected to the double-pressure battery pack, at least part of the projection range of the conversion component in the first plane coincides with the projection range of the protruding portion in the first plane.

20. The electric tool system according to claim 19, wherein The center lines of the first positive pin, the second positive pin, the first negative pin, and the second negative pin define a second plane, and the second plane is collinear or parallel to the plane where the center line of the male terminal is located; when the conversion component is connected to the protruding portion, the top surface of the main body portion is lower than or flush with the surface of the protruding portion; the projection range of the conversion component in the first plane is located within the projection range of the protruding portion in the first plane.

21. The electric tool system according to claim 8, characterized in that, When the first power tool is connected to the double-pressure battery pack through the conversion component, the conversion component is not exposed outside the first power tool and / or the double-pressure battery pack; When the conversion component is connected to the dual-voltage battery pack, the second power tool cannot be coupled to the dual-voltage battery pack; when the dual-voltage battery pack is not connected to the conversion component, the dual-voltage battery pack cannot provide the first voltage for the first power tool; the first power tool is provided with a first plug portion, and the second power tool is provided with a second plug portion; the mating portion is used to connect to the male terminal or the second plug portion; the positions of the first plug portion and the second plug portion are different; the first plug portion is located at a position farther from the operation portion than the second plug portion with respect to the dual-voltage battery pack.

Images