Tool assembly, electric tool, battery pack, and power adjustment method for tool assembly

Abstract

A tool assembly, an electric tool (200), a battery pack (10), and a power adjustment method for a tool assembly. The tool assembly comprises a battery pack (10), an electric tool (200), and an identification system (100); the identification system (100) is arranged on the battery pack (10) and / or the electric tool (200), and is used for matching, after the battery pack (10) is plugged into the electric tool (200), the output power of the battery pack (10) with power-supply power required by the electric tool (200); or, the identification system (100) is arranged on the battery pack (10) and the electric tool (200), and is used for identifiably assembling the battery pack (10) and the electric tool (200), the output power of the battery pack (10) being matched with the power-supply power of the electric tool (200).

Description

Tool assembly, power tool, battery pack and power adjustment method of tool assembly

[0001] Related applications

[0002] The present application claims priority to Chinese Patent Application No. 202410634782.8, filed on May 21, 2024, entitled “Tool assembly, power tool, battery pack and power adjustment method of tool assembly”, and Chinese Patent Application No. 202421135502.0, filed on May 21, 2024, entitled “Tool assembly, power tool and battery pack”, the contents of which are hereby incorporated by reference in their entirety. TECHNICAL FIELD

[0003] The present application relates to the field of tools, in particular to a tool assembly, a power tool, a battery pack and a power adjustment method of the tool assembly. BACKGROUND

[0004] Power tools are usually used with battery packs. Different power tools require different power supply powers. The battery pack is generally set to output a maximum voltage and a maximum current. If a power tool is plugged with a battery pack that does not match, it may cause damage to the power tool or internal chips of the battery pack. However, if the power tool and the battery pack are uniquely matched, it will lead to the need to carry multiple corresponding matching battery packs when multiple power tools are used together, which is not only costly but also extremely inconvenient.

[0005] SUMMARY

[0006] According to various embodiments of the present application, a tool assembly, a power tool, a battery pack and a power adjustment method of the tool assembly are provided.

[0007] The present application provides a tool assembly, including a battery pack and a power tool. The power tool can be plugged with the battery pack in a plugging direction. The battery pack is used to charge or power the power tool. The tool assembly is further provided with an identification system. The identification system is arranged on the battery pack and / or the power tool. After the power tool is plugged with the battery pack, the output power of the battery pack is matched with the power supply power required by the power tool. Alternatively, the identification system is arranged on the battery pack and the power tool. The battery pack and the power tool that are matched in output power and power supply power can be identified and assembled.

[0008] In an embodiment of the present application, the identification system comprises a signal identification device, which comprises a signal receiving member, an output power adjusting structure and a signal feedback member, the signal receiving member and the output power adjusting structure are arranged on the battery pack, and the signal feedback member is arranged on the power tool; the signal feedback member can be electrically connected to the signal receiving member after the power tool is plugged into the battery pack, and send a power supply power value signal required by the power tool to the signal receiving member; the output power adjusting structure is electrically connected to the signal receiving member, and is used for adjusting the output power of the battery pack according to the power supply power value signal received by the signal receiving member, so that the output power of the battery pack matches the power supply power required by the power tool.

[0009] In an embodiment of the present application, the signal receiving member and the output power adjusting structure are integrated into one structure.

[0010] In an embodiment of the present application, the identification system comprises a structure identification device, which comprises a first identification structure and a second identification structure, the first identification structure is arranged on the battery pack, the second identification structure is arranged on the power tool, the first identification structure and the second identification structure both extend along the plugging direction, and the first identification structure and the second identification structure match each other, so that the battery pack and the power tool with matched output power and power supply power can be assembled in an identifiable manner.

[0011] In an embodiment of the present application, the first identification structure comprises a plurality of grooves, and the second identification structure comprises a plurality of protrusions corresponding to at least part of the grooves.

[0012] In an embodiment of the present application, the number of protrusions in the second identification structure is less than or equal to the number of grooves in the first identification structure, and the power tools with different second identification structures can be plugged into and matched with the same battery pack.

[0013] In an embodiment of the present application, the power tool further comprises a mounting member and an electrode sheet, the electrode sheet comprises a positive electrode sheet and a negative electrode sheet, and the positive electrode sheet, the negative electrode sheet and the protrusion are fixedly arranged on the mounting member.

[0014] In an embodiment of the present application, a plurality of protrusions are arranged on the same power tool, and the shapes and / or heights of the plurality of protrusions are different.

[0015] The present application also provides a power tool, which is the power tool described above.

[0016] The present application also provides a battery pack, which is the battery pack described above.

[0017] The application also provides a power adjustment method of the tool assembly.

[0018] The power supply power value signal required by the power tool is obtained through the signal receiving member when the power tool is connected with the battery pack;

[0019] The power supply power value signal is transmitted to the output power adjustment structure;

[0020] According to the power supply power value signal, the output power adjustment structure adjusts the output power of the battery pack, so that the output power of the battery pack matches the power supply power required by the power tool.

[0021] The details of one or more embodiments of the application are presented in the accompanying drawings and description below. Other features, objects, and advantages of the application will be apparent from the description, drawings, and claims. BRIEF DESCRIPTION OF DRAWINGS

[0022] For better describing and illustrating the embodiments and / or examples of the inventions disclosed herein, reference can be made to one or more drawings. Additional details or examples used to describe the drawings should not be considered as limiting the scope of any of the disclosed inventions, the presently described embodiments and / or examples, and the best mode presently understood of these inventions.

[0023] Fig. 1 is a schematic diagram of a partial structure of a tool assembly in one embodiment.

[0024] Fig. 1A is a schematic diagram of a partial structure of a tool assembly in Fig. 1.

[0025] Fig. 2 is a schematic diagram of a structure of a battery pack in Fig. 1.

[0026] Fig. 3 is a schematic diagram of a partial structure of a tool assembly in Fig. 1.

[0027] Fig. 4 is a schematic diagram of a partial structure of a tool assembly in another embodiment.

[0028] Fig. 5 is a schematic diagram of a structure of a battery pack in Fig. 4.

[0029] Fig. 6 is a schematic diagram of a partial structure of a power tool in Fig. 4.

[0030] Fig. 7 is a schematic diagram of another angle of Fig. 6.

[0031] Fig. 8 is a schematic diagram of a partial structure of a power tool in another embodiment.

[0032] Fig. 9 is a schematic diagram of a partial structure of a power tool in another embodiment.

[0033] Fig. 10 is a schematic diagram of a partial structure of a power tool in another embodiment.

[0034] Fig. 11 is a schematic view of a battery pack according to another embodiment.

[0035] Fig. 12 is a schematic view of a part of a power tool according to another embodiment.

[0036] Fig. 13 is a schematic view of a battery pack according to another embodiment.

[0037] Fig. 14 is a partial enlarged view of X in Fig. 13.

[0038] Fig. 15 is a schematic view of a part of a power tool according to another embodiment.

[0039] Fig. 16 is a schematic view of a battery pack according to another embodiment.

[0040] Fig. 17 is a schematic view of a part of a power tool according to another embodiment.

[0041] Fig. 18 is a schematic view of a battery pack according to another embodiment.

[0042] 100, identification system; 101, signal identification device; 102, structure identification device; 10, battery pack; 11, electrode slot; 12, second identification structure; 121, second guide surface; 13, signal receiving member; 14, output power adjustment structure; 15, charging port; 20, mounting member; 21, electrode sheet; 211, positive electrode sheet; 212, negative electrode sheet; 22, first identification structure; 221, first guide surface; 23, signal feedback member; A, insertion direction; 201, power tool. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present application will be described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0044] It should be noted that when a component is referred to as being "connected with" another component, it can be directly connected with the other component or there can be intervening components. When a component is referred to as "being disposed on" another component, it can be directly disposed on the other component or there can be intervening components. When a component is referred to as "being fixed with" another component, it can be directly fixed with the other component or there can be intervening components.

[0045] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

[0046] Please refer to FIG. 1 to FIG. 3, the tool assembly comprises an electric tool 201 (not all structures are shown in the figure) and a battery pack 10, the electric tool 201 is generally used with the battery pack 10, the electric tool 201 can be connected with the battery pack 10 in the direction of insertion (the direction A in FIG. 1), and the battery pack 10 is used to charge or power the electric tool 201. Among them, the electric tool 201 is a tool driven by a transmission mechanism to drive the working head, which can be an electric screwdriver, an electric wrench, an electric drill, etc.

[0047] The electric tool 201 comprises an electric tool 201 body (not shown), a mounting piece 20 and an electrode sheet 21, the mounting piece 20 is fixedly arranged at the end of the electric tool 201 body, and the electrode sheet 21 comprises a positive electrode sheet 211 and a negative electrode sheet 212, both of which are fixedly arranged on the mounting piece 20. In some embodiments, the mounting piece 20 is a sheet structure. It can be understood that in other embodiments, the mounting piece 20 can also be other shapes, and can also be integrally formed with the electric tool 201 body.

[0048] The battery pack 10 is provided with an electrode groove 11 corresponding to the electrode sheet 21, and the electrode groove 11 comprises a positive electrode groove and a negative electrode groove corresponding to the positive electrode sheet 211 and the negative electrode sheet 212 respectively.

[0049] The electric tool 201 is generally used with the battery pack, and the power supply required by different electric tools 201 is often different, and the battery pack generally sets the maximum output voltage and the maximum current. If the electric tool 201 is connected with the battery pack that does not match, it will cause damage to the electric tool 201 or the internal chip of the battery pack. However, if the electric tool 201 and the battery pack are uniquely matched, it will lead to the need to carry multiple corresponding matching battery packs when multiple electric tools 201 are used together, which is high in cost and extremely inconvenient.

[0050] For example, the battery pack and the power tool 201 are the matching triangular plug-in structures, but the battery pack is a 20V battery pack, and the voltage adapted by the power tool 201 is 12V. Although the power tool 201 can be successfully plugged with the battery pack, the output power of the battery pack is obviously too large after plugging, which can easily cause the motor of the power tool 201 to burn out. On the contrary, the battery pack is a 12V battery pack, and the voltage adapted by the power tool 201 is 20V. After the power tool 201 is successfully plugged with the battery pack, the output power of the battery pack is obviously difficult to meet the demand of the power tool 201 in the working state, which will not cause the damage of the power tool 201, but it is difficult to fully exert the performance of the power tool 201.

[0051] In order to solve the above problems, the tool assembly of the present application is further provided with an identification system 100; the identification system 100 is arranged on the battery pack 10 and / or the power tool 201, which is used to match the output power of the battery pack 10 with the power supply power required by the power tool 201 after the power tool 201 is plugged with the battery pack 10; or the identification system 100 is arranged on the battery pack 10 and the power tool 201, which is used to make the battery pack 10 and the power tool 201 that match the output power and the power supply power to be recognizably assembled.

[0052] In this way, the user can match the output power of the battery pack 10 with the power supply power required by the power tool 201 after the battery pack 10 is plugged with the power tool 201 through the identification system 100, or prevent the battery pack 10 and the power tool 201 that do not match the output power and the required power supply power from being plugged and used, thereby protecting the power tool 201 and the battery pack 10, prolonging the service life of the power tool 201 or the battery pack 10, effectively improving the versatility of the battery pack 10, reducing the overall cost, and improving the working convenience of the user.

[0053] The "output power of the battery pack 10 matches the power supply power required by the power tool 201" in the above description means that the battery pack 10 can output the power supply power required by different power tools 201 in different states. In other words, the relationship between the battery pack and a certain type of power tool 201 or a certain power tool 201 is not unique adaptation, and the battery pack can be used in one-to-many mode. Specifically, the power tool 201 generally has a rated power P, and the rated current value that the power tool 201 can withstand is defined as I. Exceeding a certain preset range of the rated power or exceeding a certain preset range of the rated current value A can easily cause the power tool 201 to be damaged.

[0054] For example, if three different power tools 201 need to be carried at the same time when performing a certain work, and the "preset range" is set to 10%, the rated power of the three power tools 201 is P1, P2 and P3, and the corresponding rated current value is I1, I2 and I3, then the maximum output power that the three power tools 201 can withstand is P1+10%P1, P2+10%P2 and P3+10%P3, and the maximum output current that can be withstood is I1+10%I1, I2+10%I2 and I3+10%I3. At this time, "the output power of the battery pack 10 matches the power supply power required by the power tool 201" means that when the battery pack 10 is connected to the three power tools 201, the maximum output power that can be output is less than or equal to P1+10%P1, P2+10%P2, P3+10%P3, and the maximum output current that can be output by the battery pack 10 is less than or equal to I1+10%I1, I2+10%I2, I3+10%I3, so as to ensure that the battery pack 10 can be connected to different power tools 201, and meet the needs of different power tools 201 in different states, and will not output power and current beyond the range that the power tool 201 can withstand, ensuring the safety of the power tool 201. It can be understood that the "preset range" can be set according to specific circumstances, which is not limited here.

[0055] Further, the power tool 201 generally has an idle state and a load state. In the idle state, the power tool 201 does not drive external components, so there is no additional consumption, and the required power supply power is small. At this time, the battery pack 10 can reduce the output power or discharge current, as long as it can meet the needs of the power tool 201 in the idle state. When the power tool 201 is in the load state, that is, when it is connected and needs to drive external parts to work, it needs to consume more. At this time, the required power supply power or the required current value will increase sharply. At this time, the output power or discharge current of the battery pack 10 needs to reach or meet the rated power and rated current value required by the power tool 201. It can be understood that the output power and discharge current of the battery pack 10 are not a completely stable value, and can have a small range of fluctuations during cooperation with the power tool 201, but the fluctuations will not exceed the maximum power or maximum current value that the power tool 201 can withstand while meeting the needs of the power tool 201 in the current state.

[0056] Similarly, it can be understood that "the battery pack 10 with output power matching the power supply power is recognizably assembled with the power tool 201" means that the battery pack 10 has a fixed maximum output power and a maximum output current, which is not adjustable, and cannot meet the power tools 201 with different rated power at the same time, and can only meet one type of power tool 201 that is adapted thereto. For example, when the rated power of a certain type of power tool 201 is P4 and the rated current is I4, and the preset range in the above is set to 10%, then the maximum output power and the maximum output current of the battery pack 10 that can be successfully plugged with the power tool 201 must be P4+10%P4 and I4+10%I4. In other words, the power tool 201 and the battery pack are uniquely adapted.

[0057] Referring to FIGS. 1-3, in an exemplary embodiment of the present application, the identification system 100 includes a signal identification device 101, which includes a signal receiving member 13, an output power adjusting structure 14, and a signal feedback member 23 (not shown in the figure), the signal receiving member 13 and the output power adjusting structure 14 are arranged on the battery pack 10, and the signal feedback member 23 is arranged on the power tool 201. The signal feedback member 23 can be electrically connected to the signal receiving member 13 after the power tool 201 is plugged with the battery pack 10, and sends the power supply power value signal required by the power tool 201 to the signal receiving member 13; the output power adjusting structure 14 is electrically connected to the signal receiving member 13, and is used for adjusting the output power of the battery pack 10 according to the power supply power value signal received by the signal receiving member 13, so that the output power of the battery pack 10 matches the power supply power required by the power tool 201, that is, in this embodiment, the signal identification device 101 can make the identification system 100 in the adjusting mode, and the battery pack 10 can adjust the output power to match different power tools 201.

[0058] In this way, different power tools 201 can be matched and plugged with the same battery pack 10, the signal receiving member 13 in the battery pack 10 can receive the power supply power value signal feedback by the signal feedback member 23 in the power tool 201, so that the output power adjusting structure 14 in the battery pack 10 can adjust the output power of the battery pack 10 according to the power supply power value signal, so that the power tools 201 with different power supply power requirements can be adapted with the same battery pack 10, avoiding the damage of the power tools 201 or the internal chips and other components of the battery pack 10, effectively improving the working performance of the tool, prolonging the service life of different power tools 201, and improving the versatility of the battery pack 10. Moreover, the workers do not need to purchase and carry multiple battery packs 10 when working, effectively reducing the working cost and improving the working convenience.

[0059] Specifically, the output power adjustment structure 14 can take corresponding measures to limit the discharge current of the battery pack 10 (i.e., the output current of the battery pack 10) when adjusting the maximum output power of the battery pack 10 to match different power tools 201. Exemplarily, the partial ways and structures of current limiting include the following.

[0060] Way 1. Series resistance current limiting

[0061] A resistor is connected in series between the positive and negative electrodes of the battery, and the resistance value is selected according to actual needs. When current flows through the resistor, a certain voltage drop will be generated, thereby limiting the discharge current of the battery pack 10.

[0062] Way 2. MOS tube current limiting

[0063] A MOSFET (Metal Oxide Semiconductor Field Effect Transistor) can be used to achieve current limiting. The MOSFET has a low internal resistance and a dynamic response speed, and its impedance size can be changed by controlling the gate voltage, thereby achieving current limiting control of the discharge current of the battery pack 10.

[0064] Way 3. Linear regulator current limiting

[0065] The linear regulator is connected to a large capacitor through polarity, so that the large capacitor can provide part of the current when the current has a transient peak, thereby playing a buffering role, thereby achieving current limiting control of the discharge current of the battery pack 10.

[0066] Way 4. PWM current limiting

[0067] Through the PWM (Pulse Width Modulation) technology, the on and off of the switching elements in the circuit can be quickly switched, thereby achieving current limiting control of the discharge current of the battery pack 10. PWM can play an effective control role when limiting current, and is relatively simple to implement.

[0068] It can be understood that there are many different measures to limit the discharge current of the battery pack 10, including but not limited to the above-mentioned ways 1-4, and the appropriate method can be selected according to the actual situation. At the same time, the method of limiting current and the size of the limited current need to be determined according to the characteristics and working requirements of the equipment.

[0069] Further, it can be understood that the signal receiving member 13 and the output power adjustment structure 14 can be separately arranged or integrally arranged. Referring to FIG. 3, in the present embodiment, in order to reduce the required installation space and improve the adjustment efficiency, the signal receiving member 13 and the output power adjustment structure 14 are an integrated one-piece structure.

[0070] In addition, it should be noted that in some embodiments, when the power tool 201 is not provided with the signal feedback member 23 or the signal feedback member 23 fails to normally send the power supply power value signal to the signal receiving member 13, i.e. the signal receiving member 13 does not receive the power supply power value signal, the identification system 100 will switch from the adjustment mode to the protection mode, and the output power adjustment structure 14 of the signal identification device 101 will adjust the output power of the battery pack 10 to a preset minimum output power, so as to avoid damaging the power tool 201. The preset minimum output power is set according to actual conditions and is not limited herein.

[0071] Further, the battery pack 10 and the power tool 201 can also be provided with a power-off protection structure to prevent the battery pack 10 from being discharged greatly in a short time or to prevent the power tool 201 from receiving a too large discharging current. For example, in some devices, the generation of current is related to the cutting of magnetic induction lines, and when the power tool 201 is connected with an external member and rotates rapidly, the magnetic induction lines are rapidly cut, which causes the current to rise sharply and the voltage to drop. When the current value is too large and the voltage is too low, in order to prevent internal damage, the power-off protection structure can be automatically started to realize self-protection, i.e. to disconnect the electrical connection between the battery pack and the power tool 201. The power-off protection structure can be provided in the battery pack 10 or in the power tool 201. In most cases, the power tool 201 is provided with a power-off protection structure.

[0072] Referring to FIGS. 4-18, in some embodiments of the present application, the identification system 100 comprises a structure identification device 102, the structure identification device 102 comprises a first identification structure 22 and a second identification structure 12, the first identification structure 22 is provided on the battery pack 10, the second identification structure 12 is provided on the power tool 201, the first identification structure 22 and the second identification structure 12 both extend along the insertion direction, and the first identification structure 22 and the second identification structure 12 are matched with each other, so that the battery pack 10 and the power tool 201 which have matched output power and power supply power can be recognizably assembled. In other words, the first identification structure 22 is provided on the battery pack 10, the second identification structure 12 is provided on the power tool 201, the first identification structure 22 and the second identification structure 12 both extend along the insertion direction, and the first identification structure 22 and the second identification structure 12 are matched with each other, so that the battery pack 10 and the power tool 201 can be recognizably assembled.

[0073] In this way, the user can determine whether the power tool 201 and the battery pack 10 match each other through the first identification structure 22 and the second identification structure 12, so as to prevent the mismatched battery pack 10 from being plugged into the power tool 201, thereby prolonging the service life of the power tool 201 or the battery pack 10. That is, when the battery pack 10 is plugged into the power tool 201, the first identification structure 22 and the second identification structure 12 that cannot match each other can prevent the battery pack 10 and the power tool 201 from being completely plugged into each other, so as to prevent the battery pack with the mismatched output power and the required power supply power from being plugged into the power tool 201, and prevent the internal chip or other structure of the battery pack 10 or the power tool 201 from being damaged.

[0074] It can be understood that the structure identification device 102 is equivalent to ensuring that the power tool 201 is plugged into the matched battery pack 10 through the mechanical structure design, so as to ensure that only the battery pack 10 with the matched output power and the required power supply power of the power tool 201 can be successfully plugged into the power tool 201. It can be understood that the battery pack 10 has a fixed maximum output power and a maximum output current, which are not adjustable and cannot simultaneously satisfy the power tools 201 with different rated powers. The signal identification device 101 is used to flexibly adjust the output power of the battery pack 10 through signal receiving and identification, that is, the signal identification device 101 makes the maximum output power and the maximum output current of the battery pack 10 adjustable, so as to adjust the output power of the battery pack 10 to the state matched with the plugged power tool 201 according to the requirement of the plugged power tool 201, thereby ensuring the safety of the power tool 201 after being plugged into the battery pack 10 and fully exerting the performance of the power tool 201.

[0075] Exemplarily, in some embodiments, the first identification structure 22 includes a plurality of grooves, and the second identification structure 12 includes a plurality of protrusions corresponding to at least part of the grooves.

[0076] The second identification structure 12 on the power tool 201 is set as a protrusion. If the existing battery pack 10 without the groove structure is assembled with the power tool 201, the protrusion structure will hinder the power tool 201 from advancing, thereby preventing the power tool 201 from being misassembled with the battery pack 10, and protecting the chip and the battery inside the power tool 201 and the battery.

[0077] It can be understood that the first identification structure 22 can also be set as a protrusion, and correspondingly, the second identification structure 12 can also be set as a groove. Alternatively, part of the first identification structure 22 is set as a protrusion, and the other part is set as a groove, and correspondingly, part of the second identification structure 12 is set as a groove, and the other part is set as a protrusion. The concave-convex matching structure can prevent the power tool 201 from being misassembled with the battery pack 10, thereby protecting the chip and the battery inside the power tool 201 and the battery.

[0078] It should be particularly noted that the number of protrusions and the number of grooves can be the same, or the number of protrusions can be less than the number of grooves. As shown in FIGS. 5-10, in some embodiments, the number of protrusions in the second identification structure 12 is less than or equal to the number of grooves in the first identification structure 22, and the power tool 201 with different second identification structures 12 can be matched with the same battery pack 10.

[0079] Specifically, three square columnar grooves are formed on the battery pack 10 in FIG. 5, and three square columnar protrusions are correspondingly provided on the mounting member 20 shown in FIGS. 7 and 8, and when the power tool 201 provided with the mounting member 20 is inserted into the battery pack 10 in FIG. 5, the three protrusions are inserted into the three grooves, respectively. The mounting member 20 shown in FIG. 9 is provided with two square columnar protrusions, and the mounting member 20 shown in FIG. 10 is provided with only one protrusion, and when the power tool 201 provided with the mounting member 20 in FIG. 9 or FIG. 10 is inserted into the battery pack 10 in FIG. 5, only part of the grooves are used, and the remaining grooves are in an idle state.

[0080] In this way, different models of power tools 201 can be matched to the same model of battery pack 10, and the production cost can be saved.

[0081] In some embodiments, along the insertion direction A, the height of the protrusion is not higher than the height of the positive plate 211 or the negative plate 212. In this way, the original size of the power tool 201 in the insertion direction A is not increased. Of course, the height of the protrusion can also be higher than the height of the positive plate 211 or the negative plate 212, which is not limited in the present application.

[0082] In some embodiments, as shown in FIGS. 11-15, the mounting member 20 of the same power tool 201 is provided with a plurality of protrusions, and the shapes and / or heights of the plurality of protrusions are different. Specifically, as shown in FIGS. 11 and 12, the protrusions can be provided in a combined structure of triangular columns and square columns, and the grooves can also be provided in a combined structure of triangular columnar grooves and square columnar grooves; as shown in FIGS. 13-15, the heights of the protrusions can be different, and the depths of the corresponding grooves are also different. It can be understood that in some embodiments not shown, the shapes and heights of the protrusions can all be different, as long as the protrusions can be inserted into the grooves, which is not limited herein.

[0083] In some embodiments, as shown in FIGS. 16-18, the protrusions are columnar structures, and the cross-sectional shapes of the protrusions are special shapes, specifically, can be rectangular, triangular, elliptical, rhombic, regular polygonal or other non-circular shapes, as long as the protrusions and the grooves can be inserted. As shown in FIGS. 16 and 17, the protrusions and the grooves are both in the shape of a "concave" character; as shown in FIG. 18, the grooves are in the shape of a plurality of rectangular combinations.

[0084] In some embodiments, referring to FIG. 13 and FIG. 14, the side of the recess close to the protrusion is chamfered and forms a first guide surface 221; and / or, the side of the protrusion close to the recess is chamfered and forms a second guide surface 121. In this way, when the protrusion and the recess are inserted, the smoothness of the connection can be increased. In particular, after the electrode sheet 21 has been inserted into the electrode groove 11 for a certain length, the design of the first guide surface 221 and the second guide surface 121 can avoid the protrusion and the recess from shaking or displacing the electrode sheet 21 and the electrode groove 11 during the insertion.

[0085] The application also provides an electric tool 201, which is the electric tool 201 described above.

[0086] The application also provides a battery pack 10, which is the battery pack 10 described above. Further, the battery pack 10 is provided with a charging port 15, which can be used to charge the battery pack 10 when the battery pack 10 is insufficiently charged or runs out of power. The interface size of the charging port 15 of the battery pack 10 can be set to 2.5mm-3.5mm. Referring to FIG. 3, in an embodiment, the interface size of the charging port 15 of the battery pack 10 is set to 3.2mm.

[0087] The application also provides a power adjustment method of a tool assembly, which is applied to the tool assembly described above, and includes the following steps:

[0088] S1, inserting the electric tool 201 into the battery pack 10, and obtaining the power supply power value signal required by the electric tool 201 through the signal receiving member 13;

[0089] S2, transmitting the power supply power value signal to the output power adjustment structure 14;

[0090] S3, according to the power supply power value signal, the output power adjustment structure adjusts the output power of the battery pack 10, so that the output power of the battery pack 10 matches the power supply power required by the electric tool 201.

[0091] The specific meaning of “the output power of the battery pack 10 matches the power supply power required by the electric tool 201” can be referred to the above description, which will not be repeated here.

[0092] The technical features of the above-described embodiments can be combined in any manner. In order to make the description concise, not all possible combinations of the technical features in the above-described embodiments are described, however, as long as the combinations of the technical features do not contradict, they should be considered as the scope of the present disclosure.

[0093] The above-described embodiments are merely illustrative of several embodiments of the present application, which are described in more detail and in a specific manner, but should not be construed as limiting the scope of the patent application. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. A tool assembly comprising: The tool assembly comprises a battery pack and a power tool, the power tool is capable of being connected with the battery pack in a plug-in direction, and the battery pack is used for charging or powering the power tool; The tool assembly is further provided with an identification system; the identification system is arranged on the battery pack and / or the power tool, and is used for matching the output power of the battery pack with the power supply power required by the power tool after the power tool is plugged into the battery pack; or the identification system is arranged on the battery pack and the power tool, and the battery pack and the power tool which are matched in output power and power supply power are recognizably assembled.

2. The tool assembly of claim 1, wherein, The identification system comprises a signal identification device, the signal identification device comprises a signal receiving member, an output power adjusting structure and a signal feedback member, the signal receiving member and the output power adjusting structure are arranged on the battery pack, and the signal feedback member is arranged on the power tool; The signal feedback member is capable of being electrically connected with the signal receiving member after the power tool is plugged into the battery pack, and sends a power supply power value signal required by the power tool to the signal receiving member; the output power adjusting structure is electrically connected with the signal receiving member, and is used for adjusting the output power of the battery pack according to the power supply power value signal received by the signal receiving member, so that the output power of the battery pack is matched with the power supply power required by the power tool.

3. The tool assembly of claim 2, wherein, The signal receiving member and the output power adjusting structure are integrated one-piece structures.

4. The tool assembly of claim 1, wherein, The identification system comprises a structure identification device, the structure identification device comprises a first identification structure and a second identification structure, the first identification structure is arranged on the battery pack, the second identification structure is arranged on the power tool, the first identification structure and the second identification structure both extend along the plug-in direction, and the first identification structure and the second identification structure are matched with each other, so that the battery pack and the power tool which are matched in output power and power supply power are recognizably assembled.

5. The tool assembly of claim 4, wherein, The first identification structure comprises a plurality of grooves, and the second identification structure comprises at least a plurality of protrusions corresponding to part of the grooves.

6. The tool assembly of claim 5, wherein, The number of the protrusions in the second identification structure is less than or equal to the number of the grooves in the first identification structure, and the power tools with different second identification structures are capable of being plugged into the same battery pack.

7. The tool assembly of claim 5, wherein, The power tool further comprises a mounting member and an electrode sheet, the electrode sheet comprises a positive electrode sheet and a negative electrode sheet, and the positive electrode sheet, the negative electrode sheet and the protrusions are fixedly arranged on the mounting member.

8. The tool assembly of claim 5, wherein, A plurality of protrusions are arranged on the same power tool, and the shapes and / or heights of the plurality of protrusions are different.

9. A power tool characterized by comprising: The power tool is the power tool according to any one of claims 1-8.

10. A battery pack, characterized by, The battery pack is the battery pack according to any one of claims 1-8.

11. A method of power regulation for a tool assembly as claimed in any one of claims 1 to 3, wherein, The method comprises the following steps: The power tool is plugged into the battery pack, and the power supply power value signal required by the power tool is obtained through the signal receiving member; The power supply power value signal is transmitted to the output power adjusting structure; and The output power of the battery pack is adjusted according to the power supply power value signal received by the signal receiving member, so that the output power of the battery pack is matched with the power supply power required by the power tool. According to the power supply power value signal, the output power adjusting structure adjusts the output power of the battery pack, so that the output power of the battery pack matches the power supply power required by the electric tool.

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