Conversion component, dual-voltage battery pack and electric tool system

Abstract

The utility model relates to a conversion component, a dual-voltage battery pack and an electric tool system.The technical scheme includes that the conversion component is used for being connected with the dual-voltage battery pack and a first electric tool and converting the voltage of the dual-voltage battery pack into the voltage matched with the first electric tool, and the dual-voltage battery pack is provided with a first guide groove and comprises a main body part and a second guide groove; a terminal groove is formed in the housing; the male terminal is connected to the main body part and at least part of the male terminal is exposed out of the main body part; the female terminal is positioned in the terminal groove; and the second guide groove is formed in the side wall of the main body part and can be communicated with the first guide groove, so that the effect of improving the compatibility between the battery packs is achieved.

Description

Technical Field

[0001] This application relates to the field of power tool technology, and in particular to conversion components, dual-voltage battery packs, and power tool systems. Background Technology

[0002] With the development of cordless power tools, battery packs have emerged that power these tools via battery modules. Cordless power tools, due to their portability, have rapidly gained market share. However, current power tools are limited by the output voltage of their battery packs, preventing further increases in output power.

[0003] In traditional technologies, to solve the problem of limited output power of power tools, the output power of power tools is often increased by increasing the voltage of the existing battery pack.

[0004] However, current methods of increasing battery pack voltage have led to an increasing variety of battery pack types, making the pairing of power tools and battery packs more complicated. Utility Model Content

[0005] Therefore, it is necessary to provide a conversion component, a dual-voltage battery pack, and a power tool system to address the problem of too many types of battery packs.

[0006] To solve the above-mentioned technical problems, this application is implemented as follows:

[0007] In one embodiment, a conversion component is provided for connecting to a dual-voltage battery pack and a first power tool and converting the voltage of the dual-voltage battery pack to a voltage compatible with the first power tool, including:

[0008] The main body has terminal slots formed;

[0009] A male terminal is connected to the main body and is at least partially exposed outside the main body;

[0010] The female terminal is located within the terminal slot and can only output one voltage.

[0011] The main body does not have a locking part.

[0012] In some preferred embodiments, the main body includes a first half-shell and a second half-shell, which are detachably connected; the male terminal is a plug, 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, and the female terminal can only output one voltage; 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.

[0013] In some preferred embodiments, a circuit board is provided inside the main body, 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 first half shell is the upper half shell, 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 gripping part is provided on the main body.

[0014] Secondly, this application also discloses a dual-voltage battery pack for connection to a first power tool, the first power tool being provided with a connecting portion; characterized in that the dual-voltage battery pack comprises:

[0015] First shell;

[0016] The second housing is connected to the first housing and together with the first housing forms an assembly space;

[0017] The bracket is housed within the assembly space;

[0018] The battery cell assembly is at least partially supported by the support frame;

[0019] An operating part is disposed on the second housing;

[0020] The operating element is slidably connected to the operating part and has a pressing part and a locking part;

[0021] When the dual-voltage battery pack is connected to the connecting part, a receiving space is formed between the first power tool and the dual-voltage battery pack for at least partially accommodating the conversion component as described in any of the above embodiments.

[0022] In some preferred embodiments, the conversion component is located entirely within the receiving space; the receiving space extends along the length of the dual-voltage battery pack; the second housing is provided with a protrusion, the end of which is provided with a receiving groove for accommodating the conversion component.

[0023] In some preferred embodiments, the end of the protrusion away from the operating part is provided with 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 multiple battery cells connected in series and a second battery cell group composed of multiple battery cells connected in series, 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 being connected to the first positive pin, the first negative electrode being connected to the first negative pin, the second positive electrode being connected to the second positive pin, and the second negative electrode being connected to the second negative pin.

[0024] In some preferred embodiments, the conversion component is provided with a docking member, and the second housing is provided with a docking portion for accommodating the docking member; the conversion component is provided with a fixing member, and the second housing is provided with a fixing portion for accommodating the fixing member.

[0025] Thirdly, this application also discloses a power tool system, comprising:

[0026] The first power tool is connected to the dual-voltage battery pack described in any of the above embodiments via the conversion component;

[0027] When the first power tool is connected to the dual-voltage battery pack, the receiving space is located between the dual-voltage battery pack and the first power tool.

[0028] In some preferred embodiments, the power tool system further includes:

[0029] The first battery pack is capable of being directly connected to the first power tool and providing the first power tool with a suitable first voltage;

[0030] The second power tool is directly connected to the dual-voltage battery pack and receives a second voltage that is different from the first voltage.

[0031] The second battery pack is capable of connecting to the second power tool and providing the second voltage to the second power tool.

[0032] In some preferred embodiments, the first power tool is provided with a connecting portion, the connecting portion having a plug slot for the locking portion to be inserted; the connecting portion is provided with a first plug portion, and when the dual-voltage battery pack is connected to the first power tool, the conversion component is clamped between the first plug portion and the operating portion.

[0033] In some preferred embodiments, the top surface of the dual-voltage battery pack and the inner bottom surface of the connector together define the receiving space; and / or, the second housing is provided with a protrusion, the end wall of the protrusion and the side wall of the first insertion portion facing the protrusion together define the receiving space.

[0034] In some preferred embodiments, the second housing is provided with a first guide groove, and the connecting portion is provided with a first guide rail adapted to the first guide groove. One first guide rail is provided on each side of the connecting portion in the width direction, and the two first guide rails define the receiving space.

[0035] In some preferred embodiments, the height of the receiving space is less than or equal to the maximum 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 distance between the two first guide rails; and the length of the receiving space is less than or equal to the maximum distance from the protrusion to the connecting portion.

[0036] In some preferred embodiments, when the first power tool is connected to the dual-voltage battery pack via the conversion component, the conversion component is not exposed outside the first power tool and / or the dual-voltage battery pack.

[0037] In some preferred embodiments, the dual-voltage battery pack has a protrusion that prevents the second power tool from coupling with the dual-voltage battery pack when the conversion component is connected to the dual-voltage battery pack; and prevents the dual-voltage battery pack from providing the first voltage to the first power tool when the dual-voltage battery pack is not connected to the conversion component.

[0038] In some preferred embodiments, the dual-voltage battery pack has a protrusion, the first power tool is provided with a first plug-in portion, and the second power tool is provided with a second plug-in portion; the protrusion is used to connect with the male terminal or the second plug-in portion; the first plug-in portion and the second plug-in portion are located at different positions.

[0039] In some preferred embodiments, the first connector is located further away from the operating part relative to the dual-voltage battery pack than the second connector.

[0040] In this embodiment, the first and second output ports in the dual-voltage battery pack can effectively adapt to power tools with two or more voltages, thereby effectively alleviating the problem of battery pack and power tool mismatch caused by voltage incompatibility. Attached Figure Description

[0041] Figure 1 This is a schematic diagram of the main structure of a dual-voltage battery pack in one embodiment of this application;

[0042] Figure 2 This is a cross-sectional structural diagram of a dual-voltage battery pack according to an embodiment of this application;

[0043] Figure 3 This is a schematic diagram of the main structure of the dual-voltage battery pack after removing the conversion component in one embodiment of this application;

[0044] Figure 4 This is a schematic diagram of the exploded structure of a dual-voltage battery pack according to an embodiment of this application;

[0045] Figure 5 This is another perspective schematic diagram of the exploded structure of a dual-voltage battery pack in one embodiment of this application;

[0046] Figure 6 This is an exploded view of the conversion component in one embodiment of this application;

[0047] Figure 7 This is a schematic diagram of the main structure of the dual-voltage battery pack after removing the conversion component in one embodiment of this application;

[0048] Figure 8 This is a schematic diagram of the structure of a power tool system according to an embodiment of this application;

[0049] Figure 9 This is a cross-sectional structural diagram of the first power tool and the dual-voltage battery pack in one embodiment of this application;

[0050] Figure 10 This is a cross-sectional structural diagram of the second power tool and the dual-voltage battery pack in one embodiment of this application.

[0051] Figure Descriptions: 1. Dual-voltage battery pack; 11. First housing; 12. Second housing; 13. Bracket; 14. Cell assembly; 141. First cell assembly; 142. Second cell assembly; 15. Operating part; 16. Operating component; 161. Pressing part; 162. Locking part; 17. Connecting part; 171. Protrusion; 1711. First positive pin; 1712. Second positive pin; 1713. First negative pin; 1714. Second negative pin; 172. Receiving groove; 173. First guide groove; 174. Sliding groove; 18. Connecting part; 19. Fixing part; 2. Conversion component; 20. Hand lever; 21. First half-shell; 22. Second half-shell; 23. Male terminal; 2 31. First positive terminal; 232. Second positive terminal; 233. First negative terminal; 234. Second negative terminal; 24. Female terminal; 241. Main positive terminal; 242. Main negative terminal; 25. Circuit board; 26. Connecting component; 27. Fixing component; 28. Second guide groove; 29. ​​Slide rail; 3. Power tool system; 31. First power tool; 311. Connecting part; 3110. Insertion groove; 3111. First guide rail; 312. First insertion part; 32. First battery pack; 33. Second power tool; 331. Assembly part; 332. Second insertion part; 333. Second guide rail; 334. Third guide rail; 335. Enclosure part; 34. Third power tool. Detailed Implementation

[0052] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0053] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0054] Furthermore, 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 number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0055] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0056] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0057] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening 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 intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0058] This application discloses a dual-voltage battery pack 1 and an electric tool system 3 according to one embodiment, wherein the dual-voltage battery pack 1 is compatible with at least two types of electric tools.

[0059] See Figure 1 and Figure 2 Figure 1 shows a schematic diagram of the main structure of a dual-voltage battery pack according to an embodiment of this application, and Figure 2 shows a schematic diagram of the cross-sectional structure of a dual-voltage battery pack according to an embodiment of this application. The dual-voltage battery pack 1 provided in an embodiment of this application includes a first housing 11, a second housing 12, a bracket 13, a cell assembly 14, an operating part 15, an operating component 16, and a mating part 17. The first housing 11 and the second housing 12 are interconnected to form an assembly space for accommodating the bracket 13. The first housing 11 can be either the left half or the lower half, and the second housing 12 can be either the right half or the upper half, as long as the first housing 11 and the second housing 12 can be interconnected to form the assembly space. This application uses the first housing 11 and the second housing 12 as an example of the upper and lower half for explanation. The bracket 13 can be fixed in the assembly space by bolts, and the cell assembly 14 is disposed on the bracket 13 and supported by the bracket 13. An operating portion 15 is formed on the second housing 12 and / or the first housing 11. The operating portion 15 can protrude from the surface of the second housing 12. An operating member 16 is slidably connected to the operating portion 15 and has a pressing portion 161 and a locking portion 162. Both the pressing portion 161 and the locking portion 162 are exposed outside the second housing 12. The pressing portion 161 is connected to the locking portion 162. Specifically, the pressing portion 161 and the locking portion 162 are integrally formed, and pressing the pressing portion 161 moves the locking portion 162. Specifically, an elastic member can be disposed at the bottom of the pressing portion 161 within the assembly space, providing an elastic force for the pressing portion 161 to return to its original position.

[0060] A mating part 17 is disposed on the surface of the second housing 12 and located on one side of the operating 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. The first output port can output two voltages, and the output of these two voltages requires the power tool to cooperate in order to output the appropriate voltage. The second output port can only output one voltage, namely the first voltage.

[0061] In some or other preferred embodiments, the mating part 17 includes a protrusion 171 and a conversion component 2, wherein the protrusion 171 is integrally formed on the second housing 12, the conversion component 2 can be mounted on the protrusion 171, the first output port can be located on the protrusion 171, and the second output port can be located on the conversion component 2. By connecting the conversion component 2 on the protrusion 171, the voltage and connection mode output by the first output port are converted to a mode suitable for power tools.

[0062] In some or other preferred embodiments, the coupling part 17 has two forms. When the coupling part 17 is in the first form, the conversion member 2 is disengaged from the protrusion 171, and the second output port can output two voltages with the cooperation of the power tool side. When the coupling part 17 is in the second form, the conversion member 2 is coupled to the protrusion 171, and the first output port can output one voltage. The second output port includes a female terminal 24 that outputs the first voltage after conversion by the conversion member 2.

[0063] See Figure 3 and Figure 4Figure 3 shows a schematic diagram of the main structure of the dual-voltage battery pack after removing the conversion component in one embodiment of this application. Figure 4 shows an exploded schematic diagram of the dual-voltage battery pack in one embodiment of this application. In some or other preferred embodiments, a receiving groove 172 can be formed at the end of the protrusion 171 of the second housing 12 away from the operating part 15, and the conversion component 2 can be located in the receiving groove 172. The first output port can be located on the side wall of the protrusion 171 near 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 cell group 14 may include multiple cells connected in series to form a first cell group 141 and multiple cells connected in series to form a second cell group 142. The first cell group 141 may have a first positive electrode and a first negative electrode, and the second cell group 142 may have a second positive electrode and a second negative electrode. The first positive terminal can be connected to the first positive pin 1711, the first negative terminal can be connected to the first negative pin 1713, the second positive terminal can be connected to the second positive pin 1712, and the second negative terminal can be connected to the second negative pin 1714. In this case, by combining 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 first cell group 141 and the second cell group 142 can be connected in parallel, thereby outputting a first voltage. Alternatively, by 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 first cell group 141 and the second cell group 142 can be connected in series, thereby outputting a second voltage. The first battery cell group 141 can 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 can be the same as the number of battery cells in the first battery cell group 141.

[0064] The following sections will focus on a detailed explanation of conversion component 2:

[0065] In some or other preferred embodiments, the conversion component 2 may be provided with a gripping part 20. The gripping part 20 may be a gripping block protruding from the conversion component 2 or a gripping groove recessed into the surface of the conversion component 2. As long as the gripping part 20 is convenient for the operator to hold or insert fingers into it so as to remove the conversion component 2 from the protrusion 171.

[0066] See Figure 5 and Figure 6Figure 5 shows another perspective view of the exploded structure of a dual-voltage battery pack according to an embodiment of this application. Figure 6 shows an exploded structure view of a conversion component according to an embodiment of this application. In some or other preferred embodiments, the conversion component 2 may include a main body, a male terminal 23, and a female terminal 24. The main body may include a first half-shell 21 and a second half-shell 22. The first half-shell 21 and the second half-shell 22 may be arranged vertically, horizontally, or front-back, or even semi-enclosed. For example, a groove can be opened on the first half-shell 21 to accommodate the second half-shell 22, and the second half-shell 22 can be installed in the groove. In this embodiment of the application, a semi-enclosed arrangement is preferred to facilitate the installation of components inside the first half-shell 21 and the second half-shell 22. The first half-shell 21 and the second half-shell 22 can be fixedly connected by bolts, thereby enabling convenient disassembly of the first half-shell 21 and the second half-shell 22.

[0067] In some or other preferred embodiments, the conversion component 2 does not have a locking portion 162. This locking portion 162 may be the same as or similar in structure to the locking portion 162 on the operating part 15. The locking portion 162 is a component used for positioning when connected to a power tool. In the embodiments of this application, the conversion component 2 does not have this locking portion 162; that is, the conversion component 2 does not have a structure that engages with and is fixed to a locking groove on the power tool.

[0068] In some or other preferred embodiments, the male terminal 23 can be embedded in the main body, i.e., installed inside the first half-shell 21 and the second half-shell 22. The male terminal 23 may include a first positive terminal 231, a second positive terminal 232, a first negative terminal 233, and a second negative terminal 234, and the female terminal 24 may include a total positive terminal 241 and a total negative terminal 242. Preferably, within 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 protrusion 171, the male terminal 23 is inserted into the first output port, enabling the parallel connection of the first battery cell group 141 and the second battery cell group 142, thereby outputting a first voltage.

[0069] In some or other preferred embodiments, in order to facilitate the connection of the male terminal 23 to the first output port and the connection of the second output port to the power tool, the male terminal 23 can be a insert and the female terminal 24 can be a pin, so that the fit is tighter through the cooperation of the insert and the pin.

[0070] In some or other preferred embodiments, a circuit board 25 may also be connected within the space formed by 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 solder pads and conductive paths may be provided on the circuit board 25. Both the male terminal 23 and the female terminal 24 can be fixed to the circuit board 25 by soldering. In particular, the connection between the male terminal 23 and the female terminal 24 is through an electrical connection within the circuit of the circuit board 25, thereby facilitating the miniaturization of the conversion component 2 and / or making it easier to fix the male terminal 23 and the female terminal 24.

[0071] See Figure 6 and 7 Figure 7 shows a cross-sectional view of another location of the dual-voltage battery pack in one embodiment of this application, and Figure 6 shows an exploded view of the conversion component in one embodiment of this application. In some or other preferred embodiments, the conversion component 2 further includes a first plane, which is a vertical plane perpendicular to the length extension direction of the male terminal 23. The projection range of the male terminal 23 in the first plane at least partially overlaps with the projection range of the female terminal 24 in the first plane. Here, the projection range refers to all the range projected perpendicular to the first plane and extending outward in a direction parallel to the horizontal. That is, the projection range of the male terminal 23 in the first plane at least partially overlaps with the projection range of the female terminal 24, thereby reducing the height of the conversion component 2. In particular, the projection range of the male terminal 23 completely overlaps with the projection range of the female terminal 24.

[0072] 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 to the insertion direction of the male terminal 23.

[0073] In some or other preferred embodiments, the projection range of the protrusion 171 in the first plane at least partially overlaps with the projection range of the female terminal 24 in the first plane. Here, the projection range refers to all the range projected perpendicular to the first plane and extending outwards in a direction parallel to the horizontal. 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 height dimension of the conversion member 2. Specifically, the projection range of the female terminal 24 is located within the projection range of the protrusion 171.

[0074] 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. The second plane is collinear or parallel to the plane containing the center line of the male terminal 23. That is, the insertion direction of the first positive pin 1711, the second positive pin 1712, the first negative pin 1713, and the second negative pin 1714 is collinear or parallel to the insertion direction of the male terminal 23.

[0075] In some or other preferred embodiments, when the conversion component 2 is connected to the protrusion 171, the top surface of the main body is lower than or flush with the surface of the protrusion 171. Preferably, in the embodiments of this application, the top surface of the main body is flush with the surface of the protrusion 171, so that there is no obstruction when the battery pack is connected to the power tool.

[0076] See Figure 4 and 5 In some or other preferred embodiments, a docking member 26 is provided on the main body of the conversion component 2. The docking member 26 can be integrally formed on the first half shell 21. The second shell 12 has a docking part 18 on the protrusion 171. One of the docking member 26 and the docking part 18 can be a protrusion and the other can be a groove. In the embodiment of this application, the docking member 26 is a protrusion protruding from the surface of the first half shell 21, and the docking part 18 is a groove recessed into the surface of the protrusion 171. The docking member 26 and the docking part 18 cooperate.

[0077] In some or other preferred embodiments, a fixing member 27 is provided on the main body of the conversion component 2. The fixing member 27 can be located on the first half-shell 21 or on the second half-shell 22. A fixing part 19 is provided on the second shell 12. One of the connecting member 26 and the connecting part 18 can be a protrusion or a groove. In the embodiment of this application, the fixing member 27 is a protrusion that can be selectively extended on the surface of the second half-shell 22, and the fixing part 19 is a groove recessed on the surface of the second shell 12. The fixing member 27 can be driven by an elastic component. The elastic component can be a spring, leaf spring, rubber component, or other elastic component, or it can be 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 is elastic and snaps the fixing member 27 into the fixing part 19.

[0078] In some or other preferred embodiments, the second housing 12 may be provided with a first guide groove 173 on the protrusion 171. The first guide groove 173 may be formed by a first guide portion integrally formed on the protrusion 171 and the surface of the second housing 12. The main body of the conversion component 2 is provided with a second guide groove 28. The second guide groove 28 may be formed by a second guide portion integrally formed on the first half-shell 21 and the side wall of the main body. When the conversion component 2 is coupled to the protrusion 171, the first guide groove 173 and the second guide groove 28 communicate with each other.

[0079] In some or other preferred embodiments, a slide rail 29 is provided on the main body of the conversion component 2 or on one of the second housing 12, and a groove 174 is provided on the other. This embodiment of the application describes the example of a slide rail 29 being provided on the main body. 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 structural strength, in this embodiment of the application, the slide rail 29 may also be located on the side wall of the first half-shell 21. The groove 174 is located on the surface of the second housing 12. The slide rail 29 and the groove 174 are adapted to guide and / or fix the position of the conversion component 2 relative to the second housing 12 in the vertical direction.

[0080] In some or other preferred embodiments, the extension direction of the slide groove 174 may be parallel or collinear with the extension direction of the first guide groove 173. In the embodiments of this application, the extension direction of the slide groove 174 is parallel to the extension direction of the first guide groove 173.

[0081] Based on the same concept, this application also discloses an electric tool system 3, see reference. Figure 8 Figure 8 shows a schematic diagram of the structure of a power tool system according to an embodiment of this application. The power tool system 3 includes a first power tool 31. For distinction, the power tool adapted to the second output port is named the first power tool 31. The first power tool 31 can be connected to the second output port of the dual-voltage battery pack 1 disclosed in any of the above embodiments.

[0082] In some or other preferred embodiments, the power tool system 3 further includes a first battery pack 32, which can be directly connected to the first power tool 31 and can supply a first voltage to the first power tool 31. The second output port of the dual-voltage battery pack 1 can also supply a first voltage to the first power tool 31.

[0083] In some or other preferred embodiments, the power tool system 3 further includes a second power tool 33, which 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 to the second power tool 33, which is different from the first voltage. Here, the second power tool 33 connects two sets of battery cells 14 in series through its internal structure to form a compatible second voltage.

[0084] In some or other preferred embodiments, the power tool system 3 further includes a third power tool 34, which 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 power tool 34. Although the third power tool 34 here has the same operating voltage as the first power tool 31, the structure of the foot when connected to the dual-voltage battery pack 1 is different. Here, the third power tool 34 connects two sets of battery cells 14 in parallel through its internal structure to form a compatible first voltage.

[0085] In some or other preferred embodiments, the power tool system 3 further includes a second battery pack that can be connected to the second power tool 33 and provide a second voltage to the second power tool 33. That is, the second battery pack has a structure adapted to the foot of the second power tool 33 and can supply a second voltage to the second power tool 33.

[0086] In some or other preferred embodiments, when the dual-voltage battery pack 1 is connected to the first power tool 31, a receiving space is formed between the protrusion 171 and the first power tool 31, and this receiving space can accommodate the conversion component 2.

[0087] In some or other preferred embodiments, the first power tool 31 is provided with a connecting part 311, which can be the foot of the first power tool 31, for connecting to the dual-voltage battery pack 1 or the first battery pack 32. The connecting part 311 may have a insertion slot 3110, which allows the locking part 162 to be inserted, thereby locking the position of the dual-voltage battery pack 1 or the first battery pack 32. The third power tool 34 may also have a insertion slot 3110, which may be the same as the insertion slot 3110 of the first power tool 31.

[0088] In some or other preferred embodiments, the connecting part 311 may be provided with a first plug-in part 312, which has a plug for inserting into the second output port. When the first power tool 31 is connected to the dual-voltage battery pack 1, the conversion component 2 is clamped between the first plug-in part 312 and the operating part 15, thereby fixing the conversion component 2 between the dual-voltage battery pack 1 and the first power tool 31.

[0089] See Figure 8 and Figure 9 Figure 9 shows a cross-sectional view of the first power tool and the dual-pressure battery pack in one embodiment of this application. In some or other preferred embodiments, the top surface of the dual-pressure battery pack 1 and the inner bottom surface of the connecting portion 311 together define the receiving space. Here, the top surface of the dual-pressure battery pack 1 refers to the top surface of the second housing 12 and not the top surface of the protrusion 171, which is configured to protrude from the surface of the second housing 12. The space between the top surface of the dual-pressure battery pack 1 and the bottom surface of the connecting portion 311 defines the range of the conversion component 2 along the height direction.

[0090] In some or other preferred embodiments, the end wall of the protrusion 171 away from the operating part 15 and the side wall of the first insertion part 312 facing the protrusion 171 together define a receiving space, where the space between the end wall of the protrusion 171 away from the operating part 15 and the side wall of the first insertion part 312 facing the protrusion 171 defines the range of the conversion member 2 along the length direction.

[0091] In some or other preferred embodiments, the connecting portion 311 may be provided with a first guide rail 3111, with one first guide rail 3111 on each side of the insertion slot 3110 of the connecting portion 311 along the width direction. The two first guide rails 3111 together define the receiving space, and the two first guide rails 3111 define the range in the width direction of the receiving space.

[0092] 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 distance between the bottom wall of the first power tool 31 and the dual-voltage battery pack 1; the width of the receiving space is less than or equal to the maximum distance between the two first guide rails 3111; and the length of the receiving space is less than or equal to the maximum distance between the protrusion 171 and the first plug-in portion 312, so that the conversion component 2 can be received in the receiving space.

[0093] 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-voltage battery pack 1. That is, when viewed from the outside of the first power tool 31 and / or the dual-voltage battery pack 1, the existence of the conversion component 2 cannot be seen, that is, the conversion component 2 is completely contained within the containment space.

[0094] In some or other preferred embodiments, when the first power tool 31 is connected to the second output port, the first guide rail 3111 is 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 rail 3111.

[0095] In some or other preferred embodiments, the second power tool 33 is provided with an assembly part 331 for connecting to the dual-voltage battery pack 1. The assembly part 331 can also be a foot that can connect to the dual-voltage battery pack 1 or the third battery pack. The assembly part 311 can also have a insertion slot 3110, which can be the same as the insertion slot 3110 of the first power tool 31. The second power tool 33 can have a second insertion part 332. The assembly part 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 slide groove 174. The second guide rail 333 is adapted to the first guide groove 173, and the horizontal plane of the second guide rail 333 and the horizontal plane of the third guide rail 334 are not coplanar.

[0096] In some or other preferred embodiments, the assembly part 331 is provided with a closing part 335 at one end of the third guide rail 334. The closing part 335 may be a protrusion located at the end of the third guide rail 334 away from the second guide rail 333, thereby closing the end of the third guide rail 334 away from the second guide rail 333 and preventing misinsertion.

[0097] See Figure 9 and Figure 10 Figure 10 shows a cross-sectional view of the second power tool and the dual-voltage battery pack in one embodiment of this application. In some or other preferred embodiments, the second power tool 33 is blocked by the slide rail 29 in the slide groove 174 when the conversion component 2 is connected to the first output port because of the presence of the third guide rail 334. Therefore, the second power tool 33 cannot be coupled to the second output port.

[0098] In some or other preferred embodiments, the first output port can be connected to the second plug-in portion 332 or the male terminal 23, and the second output port can be connected to the first plug-in portion 312. Due to the presence of the third guide rail 334, the positions of the first plug-in portion 312 and the second plug-in portion 332 are different.

[0099] In some or other preferred embodiments, the first plug portion 312 is located further away from the operation part 15 than the second plug portion 332 relative to the dual-voltage battery pack 1. That is, since the second output port on the conversion component 2 can only be coupled to the first plug portion 312 after the first output port is connected to the conversion component 2, the first plug portion 312 is located further away from the operation part 15, and the second plug portion 332 is located closer to the operation part 15.

[0100] In some or other preferred embodiments, when the conversion component 2 is removed, the slide rail 29 is removed from the slide groove 174. At this time, although the first power tool 31 can be connected to the dual-voltage battery pack 1 after the conversion component 2 has been removed, the first output port cannot be connected to the first plug-in portion 312 because the positions of the first plug-in portion 312 and the second plug-in portion 332 are different. Therefore, the first output port cannot supply power to the first power tool 31.

[0101] In some or other preferred embodiments, the height of the conversion component 2 can be less than or equal to the maximum distance between the bottom wall of the first power tool 31 and the dual-voltage battery pack 1; the width of the conversion component 2 can be less than or equal to the maximum 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 distance between the protrusion 171 and the first insertion part 312, so that the conversion component 2 can be completely housed in the housing space formed by the dual-voltage battery pack 1 and the first power tool 31.

[0102] In some or other preferred embodiments, the projection range of the conversion component 2 in the first plane at least partially coincides with the projection range of the protrusion 171 in the first plane. Here, the projection range refers to all the range projected perpendicular to the first plane and extending outwards in a direction parallel to the horizontal; that is, the conversion component 2 and the protrusion 171 at least partially overlap in their projection ranges. Specifically, the projection range of the conversion component 2 in the first plane is entirely within the projection range of the protrusion 171 in the first plane.

[0103] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0104] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A conversion component for connecting to a dual-voltage battery pack and a first power tool and converting the voltage of the dual-voltage battery pack into a voltage compatible with the first power tool, characterized in that, include: The main body has terminal slots formed; A male terminal is connected to the main body and is at least partially exposed outside the main body; The female terminal is located within the terminal slot and can only output one voltage. The main body does not have a locking part.

2. The conversion component according to claim 1, characterized in that, The main body includes a first half-shell and a second half-shell, which are detachably connected; the male terminal is a plug, 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, and 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.

3. The conversion component according to claim 2, characterized in that, A circuit board is provided inside the main body. The male terminal is fixed to the circuit board by welding, and the female terminal is fixed to the circuit board by welding. The connection between the male terminal and the female terminal is through the internal circuit of the circuit board. 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 main body.

4. A dual-voltage battery pack for connection to a first power tool, the first power tool being provided with a connecting portion; characterized in that, The dual-voltage battery pack includes: First shell; The second housing is connected to the first housing and together with the first housing forms an assembly space; The bracket is housed within the assembly space; The battery cell assembly is at least partially supported by the support frame; An operating part is disposed on the second housing; The operating element is slidably connected to the operating part and has a pressing part and a locking part; When the dual-voltage battery pack is connected to the connecting part, a receiving space is formed between the first power tool and the dual-voltage battery pack for at least partially accommodating the conversion component as described in claim 3.

5. The dual-voltage battery pack according to claim 4, characterized in that, The conversion component is located entirely within the receiving space; the receiving space extends along the length of the dual-pressure battery pack; the second housing is provided with a protrusion, and the end of the protrusion is provided with a receiving groove for accommodating the conversion component.

6. The dual-voltage battery pack according to claim 5, characterized in that, The end of the protrusion away from the operating part is provided with 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 multiple battery cells connected in series and a second battery cell group composed of multiple 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.

7. The dual-voltage battery pack according to claim 4, characterized in that, The conversion component is provided with a docking member, and the second housing is provided with a docking portion for accommodating the docking member; the conversion component is provided with a fixing member, and the second housing is provided with a fixing portion for accommodating the fixing member.

8. A power tool system, characterized in that, include: A first power tool is connected to the dual-voltage battery pack of claim 6 or 7 via the conversion component; When the first power tool is connected to the dual-voltage battery pack, the receiving space is located between the dual-voltage battery pack and the first power tool.

9. The power tool system according to claim 8, characterized in that, The power tool system also includes: The first battery pack is capable of being directly connected to the first power tool and providing the first power tool with a suitable first voltage; The second power tool is directly connected to the dual-voltage battery pack and receives a second voltage that is different from the first voltage. The second battery pack is capable of connecting to the second power tool and providing the second voltage to the second power tool.

10. The power tool system according to claim 9, characterized in that, The first power tool is provided with a connecting part, and the connecting part has a plug-in slot for the locking part to be inserted; the connecting part is provided with a first plug-in part, and when the dual-voltage battery pack is connected to the first power tool, the conversion component is clamped between the first plug-in part and the operating part.

11. The power tool system according to claim 10, characterized in that, The top surface of the dual-voltage battery pack and the inner bottom surface of the connecting portion together define the receiving space; and / or, the second housing is provided with a protrusion, the end wall of the protrusion and the side wall of the first insertion portion facing the protrusion together define the receiving space.

12. The power tool system according to claim 11, characterized in that, The second housing is provided with a first guide groove, and the connecting part is provided with a first guide rail adapted to the first guide groove. One first guide rail is provided on each side of the connecting part in the width direction, and the two first guide rails define the receiving space.

13. The power tool system according to claim 12, characterized in that, The first power tool is provided with a first plug-in portion, the height of the receiving space is less than or equal to the maximum 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 distance between the two first guide rails; and the length of the receiving space is less than or equal to the maximum distance from the protrusion to the first plug-in portion.

14. The power tool system according to claim 8, characterized in that, When the first power tool is connected to the dual-voltage battery pack via the conversion component, the conversion component is not exposed outside the first power tool and / or the dual-voltage battery pack.

15. The power tool system according to claim 9, characterized in that, 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 to the first power tool.

16. The power tool system according to claim 9, characterized in that, The dual-voltage battery pack has a protrusion, the first power tool is provided with a first plug-in portion, and the second power tool is provided with a second plug-in portion; the protrusion is used to connect with the male terminal or the second plug-in portion; the first plug-in portion and the second plug-in portion are in different positions.

17. The power tool system according to claim 16, characterized in that, The first connector is located further away from the operating part than the second connector relative to the dual-voltage battery pack.

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