Tool assembly, electric tool, battery pack and power adjusting method of tool assembly

Abstract

The invention relates to a tool assembly, an electric tool, a battery pack and a power adjusting method of the tool assembly. The tool assembly comprises a battery pack and an electric tool, the electric tool can be in plug-in connection with the battery pack in the plug-in direction, and the battery pack is used for charging or supplying power to the electric tool; the tool assembly is further provided with an identification system. The identification system is arranged on the battery pack and / or the electric tool and is used for enabling the output power of the battery pack to be matched with the power supply power required by the electric tool after the electric tool is inserted into the battery pack; or the identification system is arranged on the battery pack and the electric tool and is used for assembling the battery pack and the electric tool with matched output power and power supply power in an identifiable manner. A user can enable the output power and the power supply power of the battery pack and the inserted electric tool to be matched with each other or prevent the battery pack with the output power not matched with the power supply power from being inserted into the electric tool for use through the identification system, so that the electric tool and the battery pack are protected, and the service life of the electric tool or the battery pack is prolonged.

Description

Technical Field

[0001] This application relates to the field of tools, and in particular to a tool assembly, power tool, battery pack, and a method for regulating the power of the tool assembly. Background Technology

[0002] Power tools are typically used with battery packs. Different power tools often require different power outputs. Battery packs are usually set to output maximum voltage and maximum current. If a power tool is used with an incompatible battery pack, it can damage the internal chips and other components of the power tool or battery pack. However, if power tools are only matched with one battery pack, multiple matching battery packs will be required when using multiple power tools, which is costly and extremely inconvenient. Summary of the Invention

[0003] In view of this, it is necessary to provide a tool assembly, power tool, battery pack, and a method for regulating the power of the tool assembly.

[0004] This application provides a tool assembly, including a battery pack and a power tool, wherein the power tool can be plugged into the battery pack in a plugging direction, and the battery pack is used to charge or supply power to the power tool;

[0005] The tool assembly is further provided with an identification system; the identification system is provided on the battery pack and / or the power tool, and is used to match the output power of the battery pack with the power supply required by the power tool after the power tool is plugged into the battery pack; or, the identification system is provided on the battery pack and the power tool, and is used to identifiably assemble the battery pack and the power tool with the output power and power supply matched.

[0006] In one embodiment of this application, the identification system includes a signal identification device, which includes a signal receiver, an output power adjustment structure, and a signal feedback device. The signal receiver and the output power adjustment structure are disposed in the battery pack, and the signal feedback device is disposed in the power tool.

[0007] The signal feedback device is electrically connected to the signal receiver after the power tool is plugged into the battery pack, and sends the power supply value signal required by the power tool to the signal receiver; the output power adjustment structure is electrically connected to the signal receiver and is used to adjust the output power of the battery pack according to the power supply value signal received by the signal receiver, so that the output power of the battery pack matches the power supply power required by the power tool.

[0008] In one embodiment of this application, the signal receiver and the output power adjustment structure are integrated into a single unit.

[0009] In one embodiment of this application, the identification system includes a structure identification device, which includes a first identification structure and a second identification structure. The first identification structure is disposed on the battery pack, and the second identification structure is disposed on the power tool. Both the first identification structure and the second identification structure extend along the insertion direction. The first identification structure and the second identification structure are matched with each other so that the battery pack with matching output power and power supply power is identifiablely assembled with the power tool.

[0010] In one embodiment of this application, the first identification structure includes a plurality of grooves, and the second identification structure includes at least a protrusion corresponding to a portion of the grooves.

[0011] In one embodiment of this 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.

[0012] In one embodiment of this application, the power tool further includes a mounting component and electrode plates, the electrode plates including a positive electrode plate and a negative electrode plate, the positive electrode plate, the negative electrode plate and the protrusion being fixedly disposed on the mounting component.

[0013] In one embodiment of this application, the same power tool is provided with a plurality of protrusions, and the plurality of protrusions have different shapes and / or heights.

[0014] This application also provides an electric tool, which is the electric tool described above.

[0015] This application also provides a battery pack, which is the battery pack described above.

[0016] This application also provides a power regulation method for a tool assembly, applied to the above-mentioned tool assembly, comprising the following steps:

[0017] The power tool is plugged into the battery pack, and the power supply value signal required by the power tool is obtained through the signal receiver.

[0018] The power supply value signal is transmitted to the output power adjustment structure;

[0019] Based on the power supply value signal, the output power adjustment structure adjusts the output power of the battery pack to match the power supply required by the power tool.

[0020] The tool components provided in this application allow users to use an identification system to match the output power of the battery pack with the power required by the plugged-in power tool, or to prevent the plugging and use of a battery pack with mismatched output power and required power with the power tool. This protects the power tool and battery pack, extends the service life of the power tool or battery pack, fully utilizes the performance of the power tool, effectively improves the versatility of the battery pack, reduces overall costs, and improves the user's work convenience. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a tool component in one embodiment;

[0022] Figure 2 for Figure 1 A schematic diagram of the structure of the battery pack;

[0023] Figure 3 for Figure 1 A schematic diagram of the structure of the tool component;

[0024] Figure 4 This is a schematic diagram of the tool component structure in another embodiment;

[0025] Figure 5 for Figure 4 A schematic diagram of the structure of the battery pack;

[0026] Figure 6 for Figure 4 A partial structural diagram of a Chinese power tool;

[0027] Figure 7 for Figure 6 A diagram from another angle;

[0028] Figure 8 This is a partial structural diagram of a power tool in another embodiment;

[0029] Figure 9 This is a partial structural diagram of a power tool in another embodiment;

[0030] Figure 10 This is a partial structural diagram of a power tool in another embodiment;

[0031] Figure 11 This is a schematic diagram of the battery pack structure in another embodiment;

[0032] Figure 12 This is a partial structural diagram of a power tool in another embodiment;

[0033] Figure 13 This is a schematic diagram of the battery pack structure in another embodiment;

[0034] Figure 14 for Figure 13 Enlarged view of a portion of the central X-section;

[0035] Figure 15 This is a partial structural diagram of a power tool in another embodiment;

[0036] Figure 16 This is a schematic diagram of the battery pack structure in another embodiment;

[0037] Figure 17 This is a partial structural diagram of a power tool in another embodiment;

[0038] Figure 18 This is a schematic diagram of the battery pack structure in another embodiment.

[0039] 100. Identification system; 101. Signal identification device; 102. Structure identification device; 10. Battery pack; 11. Electrode groove; 12. Second identification structure; 121. Second guide surface; 13. Signal receiver; 14. Output power adjustment structure; 15. Charging port; 20. Mounting component; 21. Electrode sheet; 22. First identification structure; 221. First guide surface; A. Insertion direction. Detailed Implementation

[0040] The technical solutions in the embodiments of this application are described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0041] It should be noted that when a component is said to be "connected to" another component, it can be directly connected to the other component or it can be centered within another component. When a component is said to be "set to" another component, it can be directly set to the other component or it may also be centered within another component. When a component is said to be "fixed to" another component, it can be directly fixed to the other component or it may also be centered within another component.

[0042] 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 herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "or / and" as used herein includes any and all combinations of one or more of the associated listed items.

[0043] Please see Figures 1 to 3The tool assembly includes a power tool (not all structures shown in the figure) and a battery pack 10. The power tool is typically used in conjunction with the battery pack 10. The power tool can be inserted in the direction of insertion ( Figure 1 The component (in direction A) is plugged into and connected to the battery pack 10, which is used to charge or supply power to the power tool. The power tool is a tool that drives a working head through a transmission mechanism, such as an electric screwdriver, electric wrench, or electric drill.

[0044] The power tool includes a power tool body (not shown), a mounting member 20, and electrode plates 21. The mounting member 20 is fixed to the end of the power tool body, and the electrode plates 21 include a positive electrode plate and a negative electrode plate, both of which are fixed to the mounting member 20. In some embodiments, the mounting member 20 has a sheet-like structure. It is understood that in other embodiments, the mounting member 20 may also have other shapes and may also be integrally formed with the power tool body.

[0045] The battery pack 10 has electrode slots 11 corresponding to the electrode plates 21. The electrode slots 11 include positive slots and negative slots, which correspond to the positive and negative plates, respectively.

[0046] Power tools are typically used with battery packs. Different power tools often require different power outputs. Battery packs are usually set to output maximum voltage and maximum current. If a power tool is used with an incompatible battery pack, it can damage the internal chips and other components of the power tool or battery pack. However, if power tools are only matched with one battery pack, multiple matching battery packs will be required when using multiple power tools, which is costly and extremely inconvenient.

[0047] For example, a battery pack and a power tool might have a compatible V-connector. However, if the battery pack is 20V while the power tool is designed for 12V, the power tool can be successfully connected, but the battery pack's output power will be excessively high during operation, potentially burning out the power tool's motor. Conversely, if the battery pack is 12V and the power tool is designed for 20V, the battery pack's output power will be insufficient to meet the power tool's needs during operation. While this won't damage the power tool, it will prevent it from reaching its full potential.

[0048] To address the aforementioned issues, the tool assembly of this application further includes an identification system 100. The identification system 100 is disposed on the battery pack 10 and / or the power tool, and is used to match the output power of the battery pack 10 with the power supply required by the power tool after the power tool is plugged into the battery pack 10. Alternatively, the identification system 100 is disposed on the battery pack 10 and the power tool, and is used to identifiably assemble the battery pack 10 with the power supply required by the battery pack 10, whose output power and power supply are matched.

[0049] With this configuration, the user can use the identification system 100 to ensure that the output power of the battery pack 10 matches the power required by the power tool after it is plugged in, or to prevent the battery pack 10 with mismatched output power and power required by the power tool from being plugged in. This protects the power tool and the battery pack 10, extends the service life of the power tool or the battery pack 10, effectively improves the versatility of the battery pack 10, reduces the overall cost, and improves the user's work convenience.

[0050] The phrase "the output power of battery pack 10 matches the power supply required by the power tool" means that battery pack 10 can output power sufficient to meet the power supply requirements of different power tools under different conditions. In other words, the battery pack is not uniquely compatible with a particular type of power tool or a single power tool; it can be used in a one-to-many configuration. Specifically, a power tool generally has a rated power P, and correspondingly, the rated current value that the power tool can withstand is assumed to be defined as I. Exceeding a certain preset range of the rated power or the rated current value A can easily damage the power tool.

[0051] For example, if you need to carry three different power tools when performing a certain task, and if the "preset range" mentioned above is set to 10%, and the rated power of the three power tools is P1, P2 and P3 respectively, and the rated current is I1, I2 and I3 respectively, then the maximum output power that the three power tools can withstand is P1+10%P1, P2+10%P2 and P3+10%P3 respectively, and the maximum output current that they can withstand is I1+10%I1, I2+10%I2 and I3+10%I3 respectively. In this case, "the output power of battery pack 10 matches the power required by the power tools" means that when battery pack 10 is plugged into these three power tools, the maximum output power it can output is less than or equal to P1+10%P1, P2+10%P2, and P3+10%P3, respectively; and the maximum output current it can output is less than or equal to I1+10%I1, I2+10%I2, and I3+10%I3, respectively. This ensures that battery pack 10 can be plugged into different power tools, meets the needs of different power tools in different states, and will not output power and current exceeding the power tools' tolerance range, thus ensuring the safety of the power tools. It is understood that the above "preset range" can be set according to specific circumstances and is not limited here.

[0052] Furthermore, power tools generally have no-load and load states. In the no-load state, the power tool does not drive external components, so there is no additional power consumption and the required power supply is relatively small. At this time, the output power or discharge current of the battery pack 10 can be reduced, as long as it can meet the needs of the power tool in the no-load state. When the power tool is in the load state, that is, when it is connected and needs to drive external parts, it requires greater power consumption. At this time, the required power supply or current value will increase sharply. In this case, the output power or discharge current of the battery pack 10 needs to reach or meet the rated power and rated current values ​​required by the power tool. It is understandable that the output power and discharge current of the battery pack 10 are not completely stable values ​​and may fluctuate slightly during operation with the power tool. However, these fluctuations will not exceed the maximum power or maximum current value that the power tool can withstand while meeting the needs of the power tool in the current state.

[0053] Similarly, it can be understood that "the battery pack 10, whose output power and power supply are matched, can be recognizablely assembled with the power tool" means that the battery pack 10 has a fixed maximum output power and maximum output current, which are not adjustable. It cannot simultaneously meet the needs of power tools with different rated power; it can only meet the needs of one type of power tool that is compatible with it. For example, when the rated power of a certain type of power tool is P4 and the rated current is I4, and the preset range mentioned above is set to 10%, then the maximum output power and maximum output current of the battery pack 10 that can be successfully connected to that power tool must be P4 + 10%P4 and I4 + 10%I4. In other words, this type of power tool and this battery pack are uniquely compatible.

[0054] See Figures 1 to 3 For example, in one embodiment of this application, the identification system 100 includes a signal identification device 101, which includes a signal receiver 13, an output power adjustment structure 14, and a signal feedback device (not shown in the figure). The signal receiver 13 and the output power adjustment structure 14 are disposed on the battery pack 10, and the signal feedback device is disposed on the power tool. The signal feedback device is electrically connected to the signal receiver 13 after the power tool is plugged into the battery pack 10, and sends a power supply value signal required by the power tool to the signal receiver 13. The output power adjustment structure 14 is electrically connected to the signal receiver 13 and is used to adjust the output power of the battery pack 10 according to the power supply value signal received by the signal receiver 13, so that the output power of the battery pack 10 matches the power supply power required by the power tool. That is, in this embodiment, the signal identification device 101 enables the identification system 100 to be in an adjustment mode, and the battery pack 10 can adjust its output power to match different power tools.

[0055] This configuration allows different power tools to be connected to the same battery pack 10. The signal receiver 13 in the battery pack 10 receives the power supply value signal from the signal feedback device in the power tool, enabling the output power adjustment structure 14 in the battery pack 10 to adjust the output power of the battery pack 10 according to the power supply value signal. This ensures that power tools with different power requirements can be used with the same battery pack 10, preventing damage to components such as internal chips in the power tools or battery pack 10. This effectively improves tool performance, extends the lifespan of different power tools, and enhances the versatility of the battery pack 10. Furthermore, workers do not need to purchase and carry multiple battery packs 10, effectively reducing operating costs and improving work convenience.

[0056] Specifically, when adjusting the maximum output power of the battery pack 10 to match different power tools, the output power regulation structure 14 can take corresponding measures to limit the discharge current (i.e., the output current of the battery pack 10). Exemplarily, some methods and structures for current limiting include:

[0057] Method 1. Current limiting via series resistor

[0058] A resistor is connected in series between the positive and negative terminals of the battery. The resistance value is selected according to actual needs. When current flows through the resistor, a certain voltage drop is generated, thereby limiting the discharge current of the battery pack 10.

[0059] Method 2. MOSFET current limiting

[0060] Current limiting can be achieved using a MOSFET (Metal Oxide Semiconductor Field Effect Transistor). MOSFETs have low internal resistance and fast dynamic response, and their impedance can be changed by controlling the gate voltage, thereby achieving current limiting control of the discharge current of the battery pack 10.

[0061] Method 3. Current limiting with linear regulator

[0062] The linear regulator incorporates a large capacitor with polarity, allowing the capacitor to provide a portion of the current during instantaneous peak current events, thus acting as a buffer and achieving current-limiting control over the discharge current of the battery pack 10.

[0063] Method 4. PWM Current Limiting

[0064] Pulse Width Modulation (PWM) technology allows for rapid switching of the circuit's switching elements, thereby achieving current limiting control of the battery pack's discharge current. PWM is effective in current limiting and is relatively simple to implement.

[0065] It is understood that various measures can be taken to limit the discharge current of battery pack 10, including but not limited to methods 1-4 mentioned above. The appropriate method can be selected based on the actual situation. Furthermore, the method and magnitude of the current limitation need to be determined based on the characteristics and operational requirements of the equipment.

[0066] Furthermore, it is understood that the signal receiver 13 and the output power adjustment structure 14 can be installed separately or integrated into one unit. See also Figure 3 In this embodiment, in order to reduce the required installation space and improve the adjustment efficiency, the signal receiver 13 and the output power adjustment structure 14 are integrated into one unit.

[0067] Furthermore, it should be noted that in some embodiments, when the power tool does not have a signal feedback device or the signal feedback device fails to send a power supply value signal to the signal receiver 13 normally, that is, when the signal receiver 13 does not receive a power supply value signal, the identification system 100 will switch from the adjustment mode to the protection mode. 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 to avoid damaging the power tool. The preset minimum output power is set according to the actual situation and is not limited here.

[0068] Furthermore, the battery pack 10 and the power tool can also be equipped with a power-off protection structure to prevent the battery pack 10 from discharging excessively in a short period of time or to prevent the power tool from receiving excessive discharge current. For example, in some devices, current generation is related to the cutting of magnetic field lines. When the power tool rotates rapidly while connected to external components, the magnetic field lines are quickly cut, causing a sharp increase in current and a decrease in voltage. When the current is too high and the voltage is too low, to prevent internal damage, the power-off protection structure can be automatically activated to cut off the power and achieve self-protection, that is, to disconnect the electrical connection between the battery pack and the power tool. This power-off protection structure can be installed inside the battery pack 10 or inside the power tool. In most cases, the power tool itself has a built-in power-off protection structure.

[0069] See Figures 4 to 18 In other embodiments of this application, the identification system 100 includes a structure identification device 102, which includes a first identification structure 22 and a second identification structure 12. The first identification structure 22 is disposed on the battery pack 10, and the second identification structure 12 is disposed on the power tool. Both the first identification structure 22 and the second identification structure 12 extend along the insertion direction. The first identification structure 22 and the second identification structure 12 are matched to each other so that the battery pack 10, whose output power and power supply power are matched, can be identibly assembled with the power tool. In other words, the battery pack 10 is provided with the first identification structure 22, and the power tool is provided with the second identification structure 12. Both the first identification structure 22 and the second identification structure 12 extend along the insertion direction, and the first identification structure 22 and the second identification structure 12 are matched to each other so that the battery pack 10 can be identibly assembled with the power tool.

[0070] With this configuration, the user can determine whether the power tool and the battery pack 10 are compatible through the first identification structure 22 and the second identification structure 12, preventing the use of an incompatible battery pack 10 with the power tool, thereby extending the service life of the power tool or the battery pack 10. In other words, when the battery pack 10 is plugged into the power tool, the incompatible first identification structure 22 and the second identification structure 12 can prevent the battery pack 10 and the power tool from being fully connected, preventing the use of a battery pack whose output power and required power supply are mismatched, thus avoiding damage to the internal chips or other structures of the battery pack 10 or the power tool.

[0071] It can be understood that the structural identification device 102, through mechanical structural design, ensures that the power tool can be successfully connected to the compatible battery pack 10. Only battery pack 10 whose output power matches the power supply required by the power tool can be successfully connected. This type of battery pack 10 has a fixed maximum output power and maximum output current, which are not adjustable and cannot simultaneously meet the needs of power tools with different rated power. In contrast, the signal identification device 101 flexibly adjusts the output power of the battery pack 10 through signal reception and identification. That is, the maximum output power and maximum output current of the battery pack 10 are adjustable. It can adjust the output power of the battery pack 10 to a state compatible with the power tool according to its requirements, thereby ensuring the safety of the power tool after connection to the battery pack 10 and maximizing the performance of the power tool.

[0072] For example, in some embodiments, the first identification structure 22 includes a plurality of grooves, and the second identification structure 12 includes at least a protrusion corresponding to a portion of the grooves.

[0073] The second identification structure 12 on the power tool is set as a protrusion. If the existing battery pack 10 without a groove structure is assembled with it, the protrusion structure will hinder the advancement of the power tool, thereby preventing the power tool and battery pack 10 from being mistakenly inserted and assembled, and protecting the power tool and the internal chips and battery.

[0074] Understandably, the first identification structure 22 can also be configured as a protrusion, and correspondingly, the second identification structure 12 can also be configured as a groove. Alternatively, some structures in the first identification structure 22 can be configured as protrusions, while others can be configured as grooves; similarly, some structures in the second identification structure 12 can be configured as grooves, while others can be configured as protrusions. Both the protruding and recessed structures can prevent mis-insertion of the power tool and the battery pack 10, thereby protecting the power tool and the internal chips and battery.

[0075] It should be 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. For example... Figures 5 to 10As shown, 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 power tools with different second identification structures 12 can be plugged into and matched with the same battery pack 10.

[0076] Specifically, Figure 5 The battery pack 10 has three square column-shaped grooves. Figure 7 , Figure 8 The mounting component 20 shown has three corresponding square column-shaped protrusions. When a power tool equipped with this mounting component 20 is used with... Figure 5 When the battery pack 10 is plugged in, the three protrusions are inserted into the three grooves respectively. Figure 9 The mounting component 20 shown has two square column-shaped protrusions. Figure 10 The mounting part 20 shown has only one protrusion. When it is provided with Figure 9 or Figure 10 The power tool with the middle mounting part 20 Figure 5 When the battery pack 10 is plugged in, only some of the grooves are used, while the rest are left unused.

[0077] With this setup, different models of power tools can be matched with the same model of battery pack 10, which can save production costs.

[0078] In some embodiments, the height of the protrusion along the insertion direction A is no higher than the height of the positive or negative electrode. This configuration does not increase the original dimensions of the power tool in the insertion direction A. Of course, the height of the protrusion may also be higher than the height of the positive or negative electrode; this application does not limit this.

[0079] In some embodiments, such as Figures 11 to 15 As shown, the mounting bracket 20 of the same power tool has multiple protrusions, and the protrusions have different shapes and / or heights. Specifically, as shown... Figure 11 and Figure 12 As shown, the protrusion can be configured as a combination of triangular prisms and square prisms, and the groove can also be a combination of triangular prism grooves and square prism grooves; for example... Figures 13 to 15 As shown, the height of the protrusions can vary, and the depth of the corresponding grooves will also vary. It is understood that in some embodiments not shown, the shape and height of the protrusions can be different, as long as the protrusions can be inserted into the grooves, and this is not limited here.

[0080] In some embodiments, such as Figures 16 to 18 As shown, the protrusion has a columnar structure, and its cross-sectional shape is irregular. Specifically, it can be rectangular, triangular, elliptical, rhomboid, regular polygonal, or other non-circular shapes, as long as the protrusion and the groove can be inserted into each other. Figure 16 and Figure 17As shown, both the protrusion and the groove are in the shape of a "concave" character; as Figure 18 shown, the groove is a shape formed by combining multiple rectangles.

[0081] In some embodiments, please refer to Figure 13 and Figure 14 , a chamfer is provided on one side of the groove relatively close to the protrusion and a first guiding surface 221 is formed; and / or, a chamfer is provided on one side of the protrusion relatively close to the groove and a second guiding surface 121 is formed. With such a setting, when the protrusion is inserted into the groove, the smoothness of docking can be increased. In particular, after the electrode plate 21 and the electrode groove 11 have been inserted for a certain length, the designs of the first guiding surface 221 and the second guiding surface 121 can prevent the protrusion and the groove from causing adverse effects such as shaking and displacement during the insertion of the electrode plate 21 and the electrode groove 11.

[0082] The present application also provides an electric tool, and the electric tool is the above-mentioned electric tool.

[0083] The present application also provides a battery pack 10, and the battery pack is the above-mentioned battery pack 10. Further, the battery pack 10 is provided with a charging port 15. When the battery pack 10 has insufficient power or runs out of power, the battery pack 10 can be charged through the charging port 15. The interface size of the charging port 15 of the battery pack 10 can be set to 2.5 mm - 3.5 mm. Refer to Figure 3 , in one embodiment, the interface size of the charging port 15 of the battery pack 10 is set to 3.2 mm.

[0084] The present application also provides a method for adjusting the power of a tool assembly, which is applied to the above-mentioned tool assembly and includes the steps:

[0085] S1. Insert the electric tool into the battery pack, and obtain the power supply power value signal required by the electric tool through the signal receiving component;

[0086] S2. Transmit the power supply power value signal to the output power adjustment structure;

[0087] S3. According to the power supply power value signal, the output power adjustment structure adjusts the output power of the battery pack to make the output power of the battery pack match the power supply power required by the electric tool.

[0088] The specific meaning of "the output power of the battery pack matches the power supply power required by the electric tool" can be referred to above and will not be elaborated here.

[0089] The technical features of the above-described 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.

[0090] Those skilled in the art should recognize that the above embodiments are only used to illustrate this application and are not intended to limit this application. Any appropriate changes and variations made to the above embodiments within the spirit and essence of this application fall within the scope of protection claimed in this application.

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.

Images