CN221010021U - Power tool system - Google Patents
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- CN221010021U CN221010021U CN202322564907.8U CN202322564907U CN221010021U CN 221010021 U CN221010021 U CN 221010021U CN 202322564907 U CN202322564907 U CN 202322564907U CN 221010021 U CN221010021 U CN 221010021U
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- 238000001514 detection method Methods 0.000 claims abstract description 38
- 230000006978 adaptation Effects 0.000 claims abstract description 33
- 238000007599 discharging Methods 0.000 claims abstract description 8
- 230000003044 adaptive effect Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 5
- 239000003990 capacitor Substances 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
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- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
Embodiments of the present application relate to a power tool system including a battery pack and a power tool; the battery pack includes: a battery module configured to provide a preset capacity of electric power; the battery detection module is connected with the detection end of the battery module and is configured to detect whether the battery module is in a normal discharging state or not and output a first level under the condition of the normal discharging state; the capacity identification module is connected with the battery detection module and is configured to correspond to the preset capacity of the battery module; the electric tool includes: the capacity sensing module is connected with the capacity identification module and is configured to output an electric parameter corresponding to the preset capacity under the drive of a first level; and the adaptation adjusting module is connected with the capacity sensing module and is configured to acquire the electric parameter and acquire the overcurrent protection parameter corresponding to the electric parameter according to the electric parameter. The embodiment of the application can ensure the normal use of the tool and improve the experience of the user.
Description
Technical Field
The application relates to the technical field of electric tools, in particular to an electric tool system.
Background
The present electric tool can be used with battery packs with different capacities, such as a battery pack with 2.0Ah capacity or a battery pack with 4.0Ah capacity.
However, the motor overcurrent protection function of the electric tool cannot be adapted to battery packs with different capacities, for example, if a battery pack with 2.0Ah capacity is adapted to a 20V platform tool, the battery pack with 2.0Ah capacity belongs to a small-capacity battery pack for the 20V platform tool, and since the small-capacity battery pack cannot provide enough current under the condition of high-current operation of the tool, the voltage of the battery pack is easily pulled down instantly, and the motor overcurrent protection function of the tool is still maintained in the parameter setting when being adapted to the large-capacity battery pack, and cannot be adapted to the small-capacity battery pack, so that the frequent starting of the overcurrent protection of the tool is caused, and the normal use and the user experience of the tool are affected. In addition, the battery core of the battery pack is easily damaged under the condition, and the service life of the battery pack is reduced.
Disclosure of utility model
Accordingly, embodiments of the present application provide a power tool system that solves at least one of the problems of the prior art.
In a first aspect, embodiments of the present application provide a power tool system including a battery pack and a power tool;
The battery pack includes:
a battery module configured to provide a preset capacity of electric power;
The battery detection module is connected with the detection end of the battery module and is configured to detect whether the battery module is in a normal discharging state or not and output a first level under the condition of the normal discharging state;
and a capacity identification module, connected with the battery detection module, configured to correspond to a preset capacity of the battery module;
the electric tool includes:
A capacity sensing module connected with the capacity identification module and configured to output an electrical parameter corresponding to the preset capacity under the driving of the first level;
And the adaptation and adjustment module is connected with the capacity sensing module and is configured to acquire the electric parameter and acquire an overcurrent protection parameter corresponding to the electric parameter according to the electric parameter so as to drive a motor of the electric tool to work based on the overcurrent protection parameter.
With reference to the first aspect, in an optional implementation manner, the capacity identification module includes an identification resistance unit, and a resistance value of the identification resistance unit is configured to correspond to a preset capacity of the battery module.
With reference to the first aspect, in an optional implementation manner, the capacity sensing module includes a first voltage dividing resistor unit and a second voltage dividing resistor unit, the first voltage dividing resistor unit, the second voltage dividing resistor unit and the identification resistor unit are connected in sequence and then connected between the adaptation adjustment module and the battery detection module, and a connection point between the first voltage dividing resistor unit and the second voltage dividing resistor unit is configured to output an electrical parameter corresponding to the preset capacity.
With reference to the first aspect, in an alternative embodiment, the electrical parameter includes a voltage value;
The adaptation adjustment module is configured to obtain an overcurrent protection parameter corresponding to the voltage value according to the voltage value so as to drive a motor of the electric tool to work based on the overcurrent protection parameter.
With reference to the first aspect, in an optional implementation manner, the overcurrent protection parameter includes a positive overcurrent operation current value and a positive overcurrent operation time.
With reference to the first aspect, in an alternative implementation manner, the battery detection module includes a discharge state output port configured to output the first level in a case of a normal discharge state.
With reference to the first aspect, in an alternative embodiment, the connection between the battery pack and the power tool is configured as a pluggable connection.
With reference to the first aspect, in an alternative embodiment, the battery pack further includes a first power socket and a first identification socket; the first power supply socket is connected with the power supply end of the battery module; the first identity recognition interface is connected with the capacity recognition module;
The electric tool also comprises a second power supply socket and a second identity recognition socket; the second power supply socket is connected with the adaptive adjustment module, and the second identification socket is connected with the capacity sensing module;
wherein the connection between the adaptation adjustment module and the power supply end of the battery module is configured to form a pluggable connection through the second power supply socket and the first power supply socket which are mutually matched; the connection between the capacity sensing module and the capacity identification module is configured to form a pluggable connection through the second identification socket and the first identification socket that are mutually matched.
With reference to the first aspect, in an optional implementation manner, the battery pack further includes a power display module, connected to the battery detection module, configured to receive and display current power information of the battery module.
With reference to the first aspect, in an optional implementation manner, the electric tool further includes a power module, which is connected to the power supply end of the battery module and the adaptation adjustment module, and configured to convert and output a voltage value output by the power supply end of the battery module, so as to supply power to the adaptation adjustment module.
The technical scheme provided by the embodiment of the application has the beneficial effects that: the battery detection module outputs a first level under the condition of a normal discharging state, the capacity identification module corresponding to the preset capacity of the battery module is arranged, the capacity sensing module outputs an electric parameter corresponding to the preset capacity under the driving of the first level, the adaptation adjustment module obtains an overcurrent protection parameter corresponding to the electric parameter according to the electric parameter so as to drive a motor of the electric tool to work based on the overcurrent protection parameter, and accordingly the motor overcurrent protection parameter of the electric tool can be adjusted when battery packs with different capacities are adapted to obtain the overcurrent protection parameter adapted to the battery pack capacity, the motor overcurrent protection function of the electric tool can be adapted to the battery packs with different capacities, frequent starting of the overcurrent protection of the tool is avoided, normal use of the tool is guaranteed, and user experience is improved. In addition, the frequent starting overcurrent protection of the tool is avoided, the damage to the battery core of the battery pack is reduced, and the service life of the battery pack is prolonged.
Additional aspects and advantages of embodiments of the application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of embodiments of the application.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application. In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort. The drawings and the written description are not intended to limit the scope of the inventive concepts in any way, but rather to illustrate the inventive concepts to those skilled in the art by reference to the specific embodiments. In the drawings:
FIG. 1 is a functional block diagram of one specific example of a battery capacity detection-based power tool system in an embodiment of the present application;
FIG. 2 is a schematic block diagram of one specific example of a capacity identification module and a capacity sensing module in an embodiment of the present application;
FIG. 3 is a functional block diagram of one specific example of a battery detection module in an embodiment of the present application;
fig. 4 is a schematic block diagram of a specific example of a battery pack in an embodiment of the present application;
Fig. 5 is a schematic block diagram of a specific example of a power tool in an embodiment of the application.
Detailed Description
In order to make the technical scheme and beneficial effects of the embodiments of the present application more obvious and understandable, the following detailed description is given by way of example only. Wherein the drawings are not necessarily to scale, and wherein local features may be exaggerated or reduced to more clearly show details of the local features; unless otherwise defined, technical and scientific terms used herein have the same meaning as those in the technical field to which the embodiments of the present application belong.
It should be noted that the terms "first," "second," and the like may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another element. When "first" is described, it does not necessarily mean that "second" is present; and when "second" is discussed, it is not intended that the application necessarily exists "first". The singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The term "comprising" is used to determine the presence of an included feature, but does not exclude the presence or addition of one or more other features. The term "and/or" includes any and all combinations of the associated listed items. The term "connected" may be a direct connection between two components, an indirect connection established via other components, a communication between two components, or any other possible connection.
The embodiment of the application provides an electric tool system based on battery capacity detection, wherein an electric tool can be an electric drill, an electric spanner and the like, and as shown in fig. 1, the electric tool system comprises a battery pack 001 and an electric tool 002;
A battery pack 001 comprising:
a battery module 11 configured to supply electric power of a preset capacity;
A battery detection module 12 connected to a detection terminal of the battery module 11, configured to detect whether the battery module 11 is in a normal discharge state and output a first level in the case of the normal discharge state;
And a capacity identification module 13 connected to the battery detection module 12 and configured to correspond to a preset capacity of the battery module 11;
an electric power tool 002 comprising:
A capacity sensing module 21 connected to the capacity identification module 13 and configured to output an electrical parameter corresponding to a preset capacity under the driving of a first level;
And an adaptation adjustment module 22 connected with the capacity sensing module 21 and configured to obtain an electrical parameter and obtain an overcurrent protection parameter corresponding to the electrical parameter according to the electrical parameter, so as to drive the motor of the electric tool 002 to work based on the overcurrent protection parameter.
As a specific example, the preset capacity of the battery module 11 may be 2.0Ah, 4.0Ah, or other capacities.
The adaptation adjustment module 22 of the electric tool 002 is connected with the motor 24 through the driving circuit module 23, and the driving circuit module 23 drives the motor to work under the control of the adaptation adjustment module 22.
The capacity identification module 13 and the capacity sensing module 21 may be each formed by one or a combination of two or more of components such as a resistor, a capacitor, a diode, and a triode. Each preset capacity of the battery module 11 corresponds to a configuration of the capacity identification module 13, meaning that the capacity identification module 13 can serve as an identity of the capacity of the battery module 11. Due to the difference in the configuration of the capacity identification module 13, the capacity sensing module 21 may output an electrical parameter such as a voltage value or a current value corresponding to the capacity of the battery module 11 under the driving of the first level. As a specific example, the capacity identification module 13 and the capacity sensing module 21 may be connected in series, or may be connected in parallel, and the capacity sensing module 21 may output a voltage value when connected in series, and the capacity sensing module 21 may output a current value when connected in parallel.
In the embodiment of the application, the battery detection module outputs the first level under the condition of normal discharging state, the capacity identification module corresponding to the preset capacity of the battery module is arranged, the capacity sensing module outputs the electric parameter corresponding to the preset capacity under the drive of the first level, and the adaptation adjustment module obtains the overcurrent protection parameter corresponding to the electric parameter according to the electric parameter so as to drive the motor of the electric tool to work based on the overcurrent protection parameter, so that the motor overcurrent protection parameter of the electric tool can be adjusted when the battery packs with different capacities are adapted to obtain the overcurrent protection parameter adapted to the battery pack capacity, the motor overcurrent protection function of the electric tool can be adapted to the battery packs with different capacities, the situation that the tool frequently starts the overcurrent protection is avoided, the normal use of the tool is ensured, and the user experience is improved. In addition, the frequent starting overcurrent protection of the tool is avoided, the damage to the battery core of the battery pack is reduced, and the service life of the battery pack is prolonged.
In an alternative embodiment, the capacity identification module 13 includes an identification resistance unit, and the resistance value of the identification resistance unit is configured to correspond to the preset capacity of the battery module 11.
The identification resistor unit can be formed by adopting one or more than two of components such as a resistor, a capacitor, a diode, a triode and the like. As a specific example, as shown in fig. 2, the identification resistance unit includes an identification resistance RID, one end of which is connected to the battery detection module 12, and the other end of which is connected to the first identity recognition socket 15. The first identification socket 15 can be connected with a second identification socket 26 matched with the first identification socket in a pluggable manner, and the second identification socket 26 is connected with the capacity sensing module 21 so as to realize that the other end of the identification resistor RID is connected with the capacity sensing module 21. The resistance value of the identification resistor RID corresponds to the preset capacity of the battery module 11, for example, if the preset capacity of the battery module 11 is 2.0Ah, the resistance value of the identification resistor RID may be any value or any endpoint value between 35kΩ and 70kΩ. If the preset capacity of the battery module 11 is 4.0Ah, the resistance value of the identification resistor RID may be any value between 3kΩ and 35kΩ or any endpoint value.
In an alternative embodiment, the capacity sensing module 21 includes a first voltage dividing resistor unit and a second voltage dividing resistor unit, and the first voltage dividing resistor unit, the second voltage dividing resistor unit, and the identification resistor unit are connected in sequence and then connected between the adaptation adjustment module 22 and the battery detection module 12, and a connection point between the first voltage dividing resistor unit and the second voltage dividing resistor unit is configured to output an electrical parameter corresponding to a preset capacity.
The first voltage dividing resistor unit and the second voltage dividing resistor unit can be respectively formed by adopting one or more than two of components such as a resistor, a capacitor, a diode, a triode and the like. As a specific example, as shown in fig. 2, the first voltage dividing resistor unit includes a first resistor R1, the second voltage dividing resistor unit includes a second resistor R2, one end of the first resistor R1 is connected to the adaptation adjustment module 22, the other end is connected to one end of the second resistor R2 and the adaptation adjustment module 22, and the other end of the second resistor R2 is connected to the second identification socket 26. The second identification socket 26 can be connected with the first identification socket 15 matched with the second identification socket in a pluggable manner, and the first identification socket 15 is connected with the other end of the identification resistor RID so as to realize that the other end of the second resistor R2 is connected with the other end of the identification resistor RID.
The adaptation module 22 may provide a second level to one end of the first resistor R1, which is higher than the first level output from the battery detection module 12, for example, the second level may be +5v high level. The adaptation adjustment module 22 may obtain the voltage value U1 of the connection point between the first resistor R1 and the second resistor R2 according to the following formula: u1=vs× (R R2+RRID)/(RR1+RR2+RRID), where VS represents a voltage value at one end of the first resistor R1, R R1 represents a resistance value of the first resistor R1, R R2 represents a resistance value of the first resistor R2, R RID represents a resistance value of the identification resistor RID, and the resistance value of the identification resistor RID can be calculated and obtained, so that the capacity of the battery pack connected to the electric tool can be obtained from the correspondence relationship of the resistance value of the identification resistor RID and the preset capacity of the battery module 11.
In the embodiment of the application, the voltage dividing circuit is formed by the first voltage dividing resistor unit, the second voltage dividing resistor unit and the identification resistor unit, and the electric parameters corresponding to the preset capacity are output to the adaptive adjustment module by connecting the connection point between the first voltage dividing resistor unit and the second voltage dividing resistor unit, so that the capacity of the battery pack is detected, the overcurrent protection parameters can be adjusted according to the obtained capacity of the battery pack, the situation that the tool frequently starts overcurrent protection is avoided, the normal use of the tool is ensured, the user experience is improved, and the service life of the battery pack is prolonged.
In an alternative embodiment, the electrical parameter comprises a voltage value;
The adaptation adjustment module 22 is configured to obtain an overcurrent protection parameter corresponding to the voltage value according to the voltage value to drive the motor of the electric tool 002 to operate based on the overcurrent protection parameter.
In an alternative embodiment, the over-current protection parameters include a positive over-current operation current value and a positive over-current operation time.
The positive-sequence overcurrent operation current value and the positive-sequence overcurrent operation time may be set to different values according to different power tools. As a specific example, if the resistance value R RID of the identification resistance RID of the current battery pack 001 is obtained to be within the range of 35kΩ less than or equal to R RID less than or equal to 70kΩ, the current battery pack 001 is determined to have a capacity of 2.0Ah, a positive-sequence overcurrent as a current value of 35±5A is obtained, and a positive-sequence overcurrent as a time of 1000±500ms is obtained; if the resistance value R RID of the identification resistor RID of the current battery pack 001 is obtained to be in the range of 3k omega-R RID -35 k omega, the capacity of the battery pack is judged to be 4.0Ah, the positive sequence overcurrent operating current value is obtained to be 75+/-5A, and the positive sequence overcurrent operating time is 1000+/-500 ms.
In an alternative embodiment, the battery detection module 12 includes a discharge state output port DO configured to output the first level in the case of a normal discharge state.
As a specific example, as shown in fig. 3, the battery detection module 12 employs a battery detection chip UP (e.g., a battery detection chip of model PT 6605), and the discharge state of the battery detection chip UP is represented by the level of the output of the port DO. If the battery detection module 12 detects that the battery module 11 can be normally discharged, i.e., in the case of a normal discharge state, the port DO is at a low level. If the port DO is at a low level, a voltage difference is formed between the voltage value VS at one end of the first resistor R1 and the low level at one end of the identification resistor RID (i.e., the port DO), the first resistor R1, the second resistor R2 and the identification resistor RID realize voltage division, and a connection point between the first resistor R1 and the second resistor R2 outputs a voltage value corresponding to a preset capacity, so that the detection of the battery pack capacity is realized. If the battery detection module 12 detects that the battery module 11 is an abnormal event, the port DO is in a high-impedance state.
As shown in fig. 3, the battery detection module 12 may also output the state of charge of the battery module 11 through the port CO, which is at a low level if the battery detection module 12 detects that the battery module 11 is normally chargeable. If the battery detection module 12 detects that the battery module 11 is an abnormal event, the port CO is in a high-impedance state.
In an alternative embodiment, the connection between the battery pack 001 and the power tool 002 is configured as a pluggable connection.
In an alternative embodiment, the battery pack 001 further includes a first power supply socket and a first identification socket 15; the first power supply socket is connected with the power supply end of the battery module 11; the first identity recognition interface 15 is connected with the capacity recognition module 13;
The power tool 002 also includes a second power socket and a second identification socket 26; the second power supply socket is connected with the adaptation adjusting module 22, and the second identity recognition socket 26 is connected with the capacity sensing module 21;
Wherein the connection between the adaptation adjustment module 22 and the power supply end of the battery module 11 is configured to form a pluggable connection through the second power supply socket and the first power supply socket which are mutually matched; the connection between the capacity sensing module 21 and the capacity identification module 13 is configured to form a pluggable connection through the second identification socket 26 and the first identification socket 15 that are mated to each other.
In the embodiment of the application, the first power supply socket and the second power supply socket which are matched with each other can be a pair, and are both connected with the positive electrode; two pairs of first power supply sockets include a first positive power supply socket 14 and a first negative power supply socket 16, and the second power supply sockets include a second positive power supply socket 25 and a second negative power supply socket 27, which can be set according to an actual power supply connection mode. Through pluggable connection between battery package and the electric tool, the electric tool can be changed and be connected with the battery package of different capacities to realize quick replacement, improved work efficiency and user experience and felt.
In an alternative embodiment, as shown in fig. 4, the battery pack 001 further includes an electric quantity display module 17, connected to the battery detection module 12, configured to receive and display current electric quantity information of the battery module 11, so that a user can conveniently and timely check the current electric quantity information of the battery module, and can timely charge under a low-electric-quantity condition, thereby improving the user experience.
In an alternative embodiment, as shown in fig. 5, the electric tool 002 further includes a power module 28 connected to the power supply terminal of the battery module 11 and the adaptation adjustment module 22, respectively, and configured to convert and output the voltage value output from the power supply terminal of the battery module 11 to supply power to the adaptation adjustment module 22.
As a specific example, the power module 28 is connected to the second positive power socket 25 and the power terminal of the adaptation adjustment module 22, so as to provide a stable and suitable power supply voltage value to the adaptation adjustment module 22, and provide power supply stability and adaptability.
In an alternative embodiment, adaptation module 22 may include a micro-processing unit (MCU) or other form of processing unit having data processing capabilities and/or instruction execution capabilities. The adaptation module 22 may further comprise: input/output interfaces, communication interfaces, and the like. The micro processing unit (MCU) and the communication interface are connected with each other through a bus. The communication interface is used for providing a communication channel, and the input/output interface is connected with an input device or an output device. The input devices include a keyboard, a mouse, and a microphone. The output device is used to output various information to the outside, including a display, a speaker, a printer, and a communication network and a remote output apparatus connected thereto. In addition, the adaptation module 22 may include any other suitable components, depending on the particular application.
It should be understood that the above examples are illustrative and are not intended to encompass all possible implementations encompassed by the claims. Various modifications and changes may be made in the above embodiments without departing from the scope of the disclosure. Likewise, the individual features of the above embodiments can also be combined arbitrarily to form further embodiments of the application which may not be explicitly described. Therefore, the above examples merely represent several embodiments of the present application and do not limit the scope of protection of the patent of the present application.
Claims (10)
1. A power tool system comprising a battery pack and a power tool;
The battery pack includes:
a battery module configured to provide a preset capacity of electric power;
The battery detection module is connected with the detection end of the battery module and is configured to detect whether the battery module is in a normal discharging state or not and output a first level under the condition of the normal discharging state;
and a capacity identification module, connected with the battery detection module, configured to correspond to a preset capacity of the battery module;
the electric tool includes:
A capacity sensing module connected with the capacity identification module and configured to output an electrical parameter corresponding to the preset capacity under the driving of the first level;
And the adaptation and adjustment module is connected with the capacity sensing module and is configured to acquire the electric parameter and acquire an overcurrent protection parameter corresponding to the electric parameter according to the electric parameter so as to drive a motor of the electric tool to work based on the overcurrent protection parameter.
2. The power tool system of claim 1, wherein the capacity identification module includes an identification resistance unit having a resistance value configured to correspond to a preset capacity of the battery module.
3. The power tool system according to claim 2, wherein the capacity sensing module includes a first voltage dividing resistance unit and a second voltage dividing resistance unit, the first voltage dividing resistance unit, the second voltage dividing resistance unit, and the identification resistance unit are connected in sequence and then connected between the adaptation adjustment module and the battery detection module, and a connection point between the first voltage dividing resistance unit and the second voltage dividing resistance unit is configured to output an electrical parameter corresponding to the preset capacity.
4. The power tool system of claim 1, wherein the electrical parameter comprises a voltage value;
The adaptation adjustment module is configured to obtain an overcurrent protection parameter corresponding to the voltage value according to the voltage value so as to drive a motor of the electric tool to work based on the overcurrent protection parameter.
5. The power tool system of claim 4, wherein the over-current protection parameter comprises a positive over-current operating current value and a positive over-current operating time.
6. The power tool system of claim 1, wherein the battery detection module includes a discharge state output port configured to output a first level in the case of a normal discharge state.
7. The power tool system of claim 1, wherein the connection between the battery pack and the power tool is configured as a pluggable connection.
8. The power tool system of claim 7, wherein the battery pack further comprises a first power socket and a first identification socket; the first power supply socket is connected with the power supply end of the battery module; the first identity recognition interface is connected with the capacity recognition module;
The electric tool also comprises a second power supply socket and a second identity recognition socket; the second power supply socket is connected with the adaptive adjustment module, and the second identification socket is connected with the capacity sensing module;
wherein the connection between the adaptation adjustment module and the power supply end of the battery module is configured to form a pluggable connection through the second power supply socket and the first power supply socket which are mutually matched; the connection between the capacity sensing module and the capacity identification module is configured to form a pluggable connection through the second identification socket and the first identification socket that are mutually matched.
9. The power tool system of claim 1, wherein the battery pack further comprises a power display module coupled to the battery detection module and configured to receive and display current power information of the battery module.
10. The power tool system of claim 1, further comprising a power module coupled to the power supply end of the battery module and the adaptation adjustment module, respectively, and configured to convert and output a voltage value output by the power supply end of the battery module to power the adaptation adjustment module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322564907.8U CN221010021U (en) | 2023-09-20 | 2023-09-20 | Power tool system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322564907.8U CN221010021U (en) | 2023-09-20 | 2023-09-20 | Power tool system |
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| CN221010021U true CN221010021U (en) | 2024-05-24 |
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| CN202322564907.8U Active CN221010021U (en) | 2023-09-20 | 2023-09-20 | Power tool system |
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| CN (1) | CN221010021U (en) |
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