Garden tool and electric tool

Abstract

The utility model discloses a gardening tool and an electric tool. The gardening tool comprises a shell, a working head used for achieving work, a motor, a battery pack connecting base and a fan, and the motor is contained in the shell and used for driving the working head to work; the battery pack connecting seat is arranged on the shell and used for bearing the battery pack, and the battery pack is detachably combined to the battery pack connecting seat; the battery pack connecting seat comprises a first air inlet and a first air outlet which are communicated with the inside and the outside of the battery pack connecting seat; the first air inlet is formed in a combined surface of the battery pack connecting seat and the battery pack; the fan is arranged in the battery pack connecting seat, a second air inlet of the fan is positioned at the downstream of the first air inlet, and the second air inlet is communicated with the first air inlet; a gap is formed between the battery pack and the side, provided with the first air inlet, of the battery pack connecting seat, and the fan dissipates heat of the battery pack. By the adoption of the technical scheme, the gardening tool and the electric tool with the battery pack capable of dissipating heat can be provided.

Description

Technical Field

[0001] The present application relates to a power tool, and more particularly to a gardening tool and a power tool. Background Art

[0002] Battery packs are widely used in gardening tools such as chain saws to provide power for the gardening tools. Gardening tools such as chain saws have relatively high power requirements to replace gasoline saws. When the voltage of the battery pack remains unchanged, the higher the power output, the greater the current. However, when the battery pack discharges at a large current, it generates a lot of heat and is prone to trigger over-temperature protection, which severely restricts the power generation capacity of the battery pack. At the same time, the high temperature also affects the use safety of the battery pack, thus affecting the use effect of the gardening tool. Therefore, the heat dissipation of the battery pack has become a bottleneck in its use in gardening tools. Summary of the Utility Model

[0003] An object of the present application is to solve or at least mitigate part or all of the above problems. To this end, an object of the present application is to provide a gardening tool and a power tool.

[0004] To achieve the above object, the present application adopts the following technical solutions:

[0005] On the one hand, there is provided a gardening tool, comprising:

[0006] A housing;

[0007] A working head for performing work;

[0008] A motor accommodated in the housing for driving the working head to work;

[0009] A battery pack connector provided on the housing for carrying a battery pack, and the battery pack is detachably coupled to the battery pack connector;

[0010] The battery pack connector includes:

[0011] A first air inlet communicating the inside and outside of the battery pack connector, and the first air inlet is provided on the joint surface between the battery pack connector and the battery pack;

[0012] A first air outlet communicating the inside and outside of the battery pack connector;

[0013] A fan provided inside the battery pack connector, and a second air inlet of the fan is located downstream of the first air inlet and is in communication with the first air inlet;

[0014] There is a gap between the battery pack and the side of the battery pack connector provided with the first air inlet, and the fan dissipates heat for the battery pack.

[0015] In some embodiments, the battery pack is plugged into the battery pack connector along a first direction, the first air outlet is disposed on one side of the battery pack connector along the first direction, and the second air outlet of the fan faces the first air outlet.

[0016] In some embodiments, the distance of the gap is less than 150 mm.

[0017] In some embodiments, an air flow outlet is provided on one side of the battery pack facing the battery pack connector, and the air flow outlet is communicated with the first air inlet.

[0018] In some embodiments, the fan is fixed in the battery pack connector based on the rib positions and / or fixing components of the battery pack connector.

[0019] In some embodiments, the gardening tool further includes two stop switches, and the two stop switches are correspondingly electrically connected to the motor and the fan.

[0020] In some embodiments, the diameter of the fan is less than 100 mm.

[0021] In some embodiments, the power of the fan is less than 20 W.

[0022] In some embodiments, the air flow rate of the fan is greater than 8 CFM.

[0023] On the other hand, an electric tool is provided, including:

[0024] A housing;

[0025] A working head for performing work;

[0026] A motor accommodated in the housing for driving the working head to work;

[0027] A battery pack connector disposed on the housing for carrying a battery pack, and the battery pack is detachably coupled to the battery pack connector;

[0028] The battery pack includes an air flow outlet;

[0029] The electric tool includes a heat dissipation air path for dissipating heat from the battery pack;

[0030] The first air inlet of the heat dissipation air path is disposed on the joint surface of the battery pack and the battery pack connector, and the first air outlet of the heat dissipation air path is disposed on the battery pack connector; one side of the battery pack connector provided with the first air inlet and one side of the battery pack provided with the air flow outlet are spaced apart, and the first air inlet is communicated with the air flow outlet.

[0031] The advantages of the present application are as follows:

[0032] In the gardening tool of the present application, the first air inlet and the air outlet form a heat dissipation air path. When the battery pack is outputting power, the heat dissipation airflow flows through the outside of the battery pack from the gap, takes away the heat of the battery pack through heat conduction, and then enters the battery pack connection seat through the first air inlet. The hot air flow generated by the battery pack flows in from the first air inlet. When the fan is not working, the heat dissipation airflow flows out from the first air outlet, thereby dissipating the heat of the battery pack. When the fan is working, the second air inlet receives the heat dissipation airflow from the first air inlet. By setting a fan, air flow is promoted, thereby achieving the effect of cooling and ventilation, and the fan dissipates heat for the battery pack. The battery pack is kept at a sustainable operating temperature, which is safe and reliable, and is not easy to trigger over-temperature protection, effectively increasing the working time, and ensuring the safety of the battery pack, thereby ensuring the use effect of the gardening tool.

[0033] The electric tool of the present application includes a heat dissipation air path for dissipating heat from the battery pack, wherein the first air inlet of the heat dissipation air path is arranged at the joint surface between the battery pack and the battery pack connection seat, and the first air outlet of the heat dissipation air path is arranged at the battery pack connection seat; the side of the battery pack connection seat provided with the first air inlet is spaced apart from the side of the battery pack provided with the airflow outlet, and the external air flow flows through the outside of the battery pack from the gap, takes away the heat of the battery pack by heat conduction, then enters the heat dissipation air path through the first air inlet, and finally flows out through the first air outlet, thereby dissipating heat from the battery pack. The first air inlet is connected to the airflow outlet, and the hot air flow of the battery pack itself flows into the first air inlet through the airflow outlet, then enters the heat dissipation air path through the first air inlet, and finally flows out through the first air outlet, which facilitates the discharge of the hot air flow in the battery pack, thereby dissipating heat from the battery pack, and the external air flow and the hot air flow in the battery pack act independently at the same time, respectively dissipating heat from the battery pack, thereby improving the heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 is a schematic diagram of a garden tool without a battery pack installed at a viewing angle provided by a specific embodiment of the present application;

[0035] Figure 2 is a schematic diagram of a garden tool without a battery pack installed from another perspective provided in a specific embodiment of the present application;

[0036] Figure 3 It is a partial schematic diagram of a garden tool equipped with a battery pack provided in a specific embodiment of the present application;

[0037] Figure 4 is a cross-sectional view of a garden tool with a battery pack installed provided in a specific embodiment of the present application;

[0038] Figure 5 is a schematic diagram of a battery pack provided in a specific embodiment of the present application;

[0039] Figure 6It is a cross-sectional view of a gardening tool provided by a specific embodiment of the present application;

[0040] Figure 7 It is a schematic diagram of a fan provided by a specific embodiment of the present application.

[0041] In the figure:

[0042] 100, housing; 101, first grip portion; 102, second grip portion;

[0043] 200, working head;

[0044] 300, battery pack connection seat; 303, connection pole piece; 304, first air inlet; 305, rib position; 306, first air outlet;

[0045] 400, battery pack; 401, air flow outlet;

[0046] 500, fan; 501, plug; 502, second air inlet; 503, second air outlet. Specific embodiments

[0047] Before explaining any embodiment of the present application in detail, it should be understood that the present application is not limited to the structural details and component arrangements set forth in the following description or shown in the above drawings.

[0048] In the present application, the terms "include", "comprise", "have" or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "comprising a..." does not exclude the presence of additional identical elements in the process, method, article or device comprising that element.

[0049] In the present application, the term "and / or" is a relationship describing associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, in the present application, the character " / " generally represents an "and / or" relationship between the associated objects before and after.

[0050] In this application, the terms "connected", "combined", "coupled", and "mounted" can be direct connections, combinations, couplings, or mountings, or indirect connections, combinations, couplings, or mountings. For example, a direct connection means that two parts or components are connected together without an intermediate member, and an indirect connection means that two parts or components are respectively connected to at least one intermediate member, and these two parts or components are connected through the intermediate member. In addition, "connected" and "coupled" are not limited to physical or mechanical connections or couplings, and can include electrical connections or couplings.

[0051] In this application, those of ordinary skill in the art will understand that relative terms used in combination with a quantity or condition (such as "about", "approximately", "substantially", etc.) include the recited value and have the meaning indicated by the context. For example, such relative terms include at least the degree of error associated with the measurement of a particular value, tolerances resulting from manufacturing, assembly, use, etc. associated with a particular value. Such terms should also be considered to disclose a range defined by the absolute values of two endpoints. The relative term may refer to a plus or minus a certain percentage (such as 1%, 5%, 10% or more) of the indicated value. Numerical values without the use of relative terms should also be disclosed as specific values with tolerances. In addition, when expressing a relative angular positional relationship (such as substantially parallel, substantially perpendicular), "substantially" may refer to a plus or minus a certain number of degrees (such as 1 degree, 5 degrees, 10 degrees or more) based on the indicated angle.

[0052] In this application, those of ordinary skill in the art will understand that the functions performed by a component can be performed by one component, multiple components, one part, or multiple parts. Similarly, the functions performed by a part can also be performed by one part, one component, or a combination of multiple parts.

[0053] In this application, the orientation terms such as "upper", "lower", "left", "right", "front", "rear", etc. are described based on the orientation and positional relationship shown in the drawings, and should not be construed as a limitation on the embodiments of this application. In addition, in the context, it should also be understood that when it is mentioned that one element is connected "above" or "below" another element, it can not only be directly connected "above" or "below" another element, but also be indirectly connected "above" or "below" another element through an intermediate element. It should also be understood that orientation terms such as the upper side, lower side, left side, right side, front side, rear side, etc. not only represent the positive orientation, but can also be understood as the side orientation. For example, the lower side can include directly below, lower left, lower right, front lower, and rear lower, etc.

[0054] As Figures 1-7As shown in the figure, this embodiment provides a gardening tool, which includes a housing 100, a working head 200, a motor (not shown in the figure), a battery pack connector 300, and a fan 500. The working head 200 is used to perform work. The motor is accommodated in the housing 100 and is used to drive the working head 200 to work. The battery pack connector 300 is used to carry the battery pack 400. The battery pack 400 is detachably coupled to the battery pack connector 300. The battery pack connector 300 is provided on the housing 100. The battery pack connector 300 and the housing 100 can be an integral structure or a split structure, which is not limited.

[0055] The battery pack connector 300 includes a first air inlet 304 and a first air outlet 306. The first air inlet 304 is provided on the joint surface between the battery pack connector 300 and the battery pack 400. The first air inlet 304 and the first air outlet 306 are respectively communicated with the inside and outside of the battery pack connector 300. The fan 500 is provided inside the battery pack connector 300. The fan 500 includes a second air inlet 502. The second air inlet 502 is located downstream of the first air inlet 304 and is communicated with the first air inlet 304. When the battery pack 400 is coupled to the battery pack connector 300, there is a gap between the battery pack 400 and the side of the battery pack connector 300 where the first air inlet 304 is provided. The fan 500 dissipates heat from the battery pack 400.

[0056] The first air inlet 304 and the air outlet form a heat dissipation air path. When the battery pack 400 outputs power, the heat dissipation air flow flows through the outside of the battery pack 400 from the gap, takes away the heat of the battery pack 400 through heat conduction, and then enters the battery pack connector 300 through the first air inlet 304. The hot air flow generated by the battery pack 400 flows in from the first air inlet 304. When the fan 500 does not work, the heat dissipation air flow flows out from the first air outlet 306, thereby dissipating heat from the battery pack 400. When the fan 500 works, the second air inlet 502 receives the heat dissipation air flow from the first air inlet 304. By setting the fan 500, the air flow is promoted, so as to achieve the effects of cooling and ventilation, and realize the fan 500 dissipating heat from the battery pack 400. The battery pack 400 is maintained at a sustainable working temperature, safe and reliable, not easily triggering over-temperature protection, effectively increasing the working time, and ensuring the use safety of the battery pack 400, and further ensuring the use effect of the gardening tool.

[0057] One side of the battery pack 400 facing the battery pack connection base 300 is provided with an air flow outlet 401. The air flow outlet 401 is communicated with the first air inlet 304. The hot air flow of the battery pack 400 itself flows into the first air inlet 304 through the air flow outlet 401, facilitating the discharge of the hot air flow, thereby realizing the heat dissipation of the battery pack 400. The heat dissipation air flow includes the external air flow and the hot air flow of the battery pack 400 itself. The two parts of the air flow flow independently. The first air inlet 304 not only allows the hot air flow generated by the battery pack 400 itself to flow in, but also allows the external heat dissipation air flow flowing through the battery pack 400 in the gap to flow in, respectively dissipating heat from the battery pack 400 and improving the heat dissipation effect.

[0058] In one embodiment, the second air outlet 503 of the fan 500 faces the first air outlet 306, that is, the fan 500 is arranged on the heat dissipation air path. When the fan 500 works, the heat dissipation air flow flows in from the first air inlet 304, flows through the fan 500 and then flows out from the first air outlet 306, thereby dissipating heat from the battery pack 400, reducing the number of air outlets and simplifying the structure.

[0059] The battery pack 400 is inserted into the battery pack connection base 300 along the first direction. The first air outlet 306 is arranged on one side of the battery pack connection base 300 along the first direction. The heat dissipation air flow only flows out to one side in the first direction, avoiding the heat dissipation air flow flowing towards the battery pack 400 and having a good heat dissipation effect. As Figure 1 、 Figure 3 and Figure 4 shown, the first direction is the up-and-down direction. The battery pack 400 is installed from top to bottom, and the first air outlet 306 is located at the bottom.

[0060] In other embodiments, a third air outlet (not shown in the figure) is additionally provided on the battery pack connection base 300. The second air outlet 503 of the fan 500 is communicated with the third air outlet. Part of the heat dissipation air flow flows out from the first air outlet 306, and the other part of the heat dissipation air flow flows out through the second air outlet 503 and the third air outlet of the fan 500, increasing the number of air outlets and improving the heat dissipation effect.

[0061] In some embodiments, the distance of the gap is less than 150 mm. Exemplarily, the distance of the gap can be 0, 30 mm, 50 mm, 80 mm, 100 mm or 120 mm, etc., without limitation. The farther the distance between the two is, the larger the heat dissipation air flow carries more heat and flows into the first air inlet 304 from the gap, facilitating heat dissipation. However, if the distance between the two is too large, the overall volume will be too large.

[0062] As Figure 6As shown, in one embodiment, the air flow outlet 401 and the first air inlet 304 are arranged facing each other, which further facilitates the flow of the heat dissipation air flow. The air flow outlet 401 can be directly opposite to the first air inlet 304. Exemplarily, the first air inlet 304 is a plurality of first through holes on the battery pack connector 300, and the air flow outlet 401 is a plurality of second through holes on the housing of the battery pack 400, and the plurality of first through holes and the plurality of second through holes are arranged in one-to-one correspondence. In one embodiment, the air flow outlet 401 and the first air inlet 304 can also be arranged in a staggered manner to meet requirements such as spatial layout.

[0063] In some embodiments, the battery pack connector 300 is provided with a connection tab 303. When the battery pack 400 is connected to the gardening tool, it is electrically connected to the electrode tab of the battery pack 400 through the connection tab 303 to conduct the power supply. The gardening tool can be a chain saw or a lawn mower, etc., which is not limited. In this embodiment, the gardening tool is taken as a chain saw for exemplary illustration. The working head 200 is a cutting element, the working head 200 is located in front of the gardening tool, and the housing 100 is formed with a first gripping portion 101 and a second gripping portion 102 from front to back, which facilitates the operation of the gardening tool. The battery pack connector 300 is provided on the left side of the first gripping portion 101, and the battery pack 400 is connected below the battery pack connector 300. In one embodiment, the first direction is the left-right direction, and the battery pack 400 is inserted into the battery pack connector 300 along the first direction, which facilitates the disassembly and assembly of the battery pack 400.

[0064] The fan 500 is fixed in the battery pack connector 300 based on the rib 305 and / or the fixing component of the battery pack connector 300. In one embodiment, ribs 305 are provided inside the battery pack connector 300, and the fan 500 is snap-fitted to the ribs 305 to fix the fan 500. In one embodiment, the fixing component includes fasteners such as screws. The battery pack connector 300 is provided with connection holes, and the screws pass through the fan 500 and are connected to the connection holes to fix the fan 500. In one embodiment, the battery pack connector 300 is provided with a limit card seat formed by the rib 305 and connection holes. The fixing component includes fasteners such as screws. The fan 500 is limited by the limit card seat, and the screws pass through the fan 500 and are connected to the connection holes to fix the fan 500. In one embodiment, the battery pack connector 300 has a housing structure, and the housing structure itself forms a limit card seat adapted to the outer shape of the fan 500. The fan 500 is limited by the limit card seat, and other components inside the battery pack connector 300 are abutted against the fan 500 to fix the fan 500. In one embodiment, the battery pack connector 300 has a housing structure, and the housing structure itself forms a limit card seat adapted to the outer shape of the fan 500, and the housing structure is provided with connection holes. The fan 500 is limited by the limit card seat, and the screws pass through the fan 500 and are connected to the connection holes to fix the fan 500. A circuit board is provided inside the garden tool, and the plug 501 of the fan 500 is connected to the circuit board to control the operation of the fan 500 through the circuit board. Optionally, the plug 501 can be connected to the components inside the battery pack connector 300 and connected to the circuit board through this component. Optionally, the plug 501 can also be directly connected to the circuit board. The present application does not limit the connection manner between the plug 501 and the circuit board.

[0065] In some embodiments, after the garden tool is started, the fan 500 starts synchronously, and after the garden tool is turned off, the fan 500 turns off synchronously. In some embodiments, after the garden tool is started, the fan 500 starts after a first preset time, and after the garden tool is turned off, the fan 500 turns off synchronously. The first preset time is set according to empirical values to avoid waste of electricity. In some embodiments, after the garden tool is started, the fan 500 starts synchronously, and after the garden tool is turned off, the fan 500 continues to operate for a second preset time before turning off. The second preset time is set according to empirical values to fully dissipate heat from the connecting pole piece 303 and the battery pack 400. In some embodiments, after the garden tool is started, the fan 500 starts after a first preset time, and after the garden tool is turned off, the fan 500 continues to operate for a second preset time before turning off. Optionally, the garden tool and the fan 500 can share a start-stop switch. Optionally, the garden tool and the fan 500 can each use their own start-stop switches. In some embodiments, the garden tool further includes two stop switches, which are correspondingly electrically connected to the motor and the fan 500, and the motor and the fan 500 are independently controlled to turn off. In one embodiment, after the garden tool stops working, the fan 500 continues to work to dissipate heat from the battery pack 400, and the fan 500 and the motor can be manually controlled to turn off at any time according to the situation, and the flexibility of use is good.

[0066] In some embodiments, the air volume of the fan 500 is greater than or equal to 0.001 m 3 / s. Optionally, the air volume of the fan 500 is 0.002 m 3 / s. Optionally, the air volume of the fan 500 is 0.005 m 3 / s. Optionally, the air volume of the fan 500 is 0.0085 m 3 / s. In some embodiments, the rotational speed of the fan 500 is greater than 1000 rpm. Optionally, the rotational speed of the fan 500 is 1200 rpm, 1500 rpm or 2000 rpm, etc. In some embodiments, the flow rate of the fan 500 is greater than 8 CFM. Optionally, the flow rate of the fan 500 is 9 CFM, 10 CFM, 11 CFM or 12 CFM, etc. In some embodiments, the power of the fan 500 is less than 20 W. Optionally, the power of the fan 500 is 15 W, 10 W or 5 W, etc. Ensure that the fan 500 has sufficient ability to promote air flow, accelerate heat transfer, and ensure the heat dissipation effect.

[0067] In some embodiments, the diameter of the fan 500 is less than 100 mm. Optionally, the diameter of the fan 500 is 95 mm, 90 mm, 85 mm, 80 mm, 75 mm, 70 mm, 65 mm, 60 mm, 55 mm or a smaller size, etc. The small size of the fan 500 makes the size of the battery pack connector 300 appropriate and the structure of the chainsaw compact.

[0068] In one embodiment, the gardening tool further includes an independent housing added outside the battery pack connector 300. The fan 500 is placed in the independent housing, and the independent housing communicates with the battery pack connector 300. Since the independent housing and the battery pack connector 300 are in a communicating relationship, the independent housing and the battery pack connector 300 form an integral body, forming a battery pack connector 300 including the independent housing. At this time, the fan 500 can also be used to promote the air flow in the battery pack connector 300 and play a role in heat dissipation. Therefore, the battery pack connector 300 defined in the present application not only refers to the battery pack connector 300 itself, but also includes the battery pack connector 300 and any external housing communicating therewith, where the present application does not limit the shape and structure of the external housing.

[0069] As Figures 1-7 shown, this embodiment also provides a power tool, including a housing 100, a working head 200, a motor, and a battery pack connector 300. Among them, the working head 200 is used to perform work. The motor is accommodated in the housing 100 and is used to drive the working head 200 to work. The battery pack connector 300 is provided on the housing 100 and is used to carry the battery pack 400. The battery pack 400 is detachably coupled to the battery pack connector 300, and the battery pack 400 includes an air flow outlet 401. The power tool includes a heat dissipation air path for dissipating heat from the battery pack 400. The first air inlet 304 of the heat dissipation air path is provided on the joint surface between the battery pack 400 and the battery pack connector 300, and the first air outlet 306 of the heat dissipation air path is provided on the battery pack connector 300; the side of the battery pack connector 300 provided with the first air inlet 304 is spaced from the side of the battery pack 400 provided with the air flow outlet 401, and the external air flows through the gap outside the battery pack 400, takes away the heat of the battery pack 400 through heat conduction, then enters the heat dissipation air path through the first air inlet 304, and finally flows out through the first air outlet 306 to achieve heat dissipation of the battery pack 400. The first air inlet 304 is in communication with the air flow outlet 401. The hot air flow of the battery pack 400 itself flows into the first air inlet 304 through the air flow outlet 401, then enters the heat dissipation air path through the first air inlet 304, and finally flows out through the first air outlet 306, which facilitates the discharge of the hot air flow in the battery pack 400, thereby realizing the heat dissipation of the battery pack 400. The external air flow and the hot air flow in the battery pack 400 act independently at the same time to dissipate heat from the battery pack 400 respectively, improving the heat dissipation effect.

[0070] A first air inlet 304 is provided on the joint surface between the battery pack connector 300 and the battery pack 400. The first air inlet 304 communicates the inside and outside of the battery pack connector 300. The hot air flow generated by the battery pack 400 flows into the battery pack connector 300 from the first air inlet 304, ensuring sufficient heat dissipation for the battery pack 400 and improving the heat dissipation effect of the battery pack 400.

[0071] The power tool can be a chain saw or a lawn mower, etc., without limitation. In this embodiment, the power tool is a chain saw, and the working head 200 is a cutting element.

[0072] The specific structure of the battery pack connector 300, such as the structural shape and positional relationship of the first air outlet 306 and the first air inlet 304, as well as other parameters of the fan 500, can be set with reference to the garden tool and will not be elaborated here.

[0073] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the above embodiments do not limit the present application in any form. Any technical solutions obtained by using equivalent replacement or equivalent transformation fall within the protection scope of the present application.

Claims

1. A gardening tool, comprising: A housing (100); A working head (200) for performing work; A motor, housed in the housing (100), for driving the working head (200) to work; A battery pack connector (300), provided on the housing (100), for carrying a battery pack (400), and the battery pack (400) is detachably coupled to the battery pack connector (300); Characterized in that the battery pack connector (300) comprises: A first air inlet (304), communicating the inside and outside of the battery pack connector (300), and the first air inlet (304) is provided on the joint surface between the battery pack connector (300) and the battery pack (400); A first air outlet (306), communicating the inside and outside of the battery pack connector (300); A fan (500), provided inside the battery pack connector (300), a second air inlet (502) of the fan (500) is located downstream of the first air inlet (304), and the second air inlet (502) is in communication with the first air inlet (304); There is a gap between the battery pack (400) and the side of the battery pack connector (300) where the first air inlet (304) is provided, and the fan (500) dissipates heat for the battery pack (400).

2. The gardening tool according to claim 1, characterized in that, The battery pack (400) is plugged into the battery pack connector (300) in a first direction, the first air outlet (306) is provided on one side of the battery pack connector (300) along the first direction, and a second air outlet (503) of the fan (500) faces the first air outlet (306).

3. The gardening tool according to claim 1, characterized in that, The distance of the gap is less than 150 mm.

4. The gardening tool according to claim 1, characterized in that, One side of the battery pack (400) facing the battery pack connector (300) is provided with an air flow outlet (401), and the air flow outlet (401) is in communication with the first air inlet (304).

5. The gardening tool according to claim 1, characterized in that, The fan (500) is fixed in the battery pack connector (300) based on the rib position (305) and / or fixing components of the battery pack connector (300).

6. The gardening tool according to claim 1, characterized in that, The gardening tool further comprises two stop switches, and the two stop switches are correspondingly electrically connected to the motor and the fan (500).

7. The gardening tool according to claim 1, characterized in that, The diameter of the fan (500) is less than 100 mm.

8. The gardening tool according to claim 1, characterized in that, The power of the fan (500) is less than 20 W.

9. The gardening tool according to claim 1, characterized in that, The air flow of the fan (500) is greater than 8 CFM.

10. An electric tool, comprising: A housing (100); A working head (200) for performing work; A motor, housed in the housing (100), for driving the working head (200) to work; A battery pack connector (300), provided on the housing (100), for carrying a battery pack (400), and the battery pack (400) is detachably coupled to the battery pack connector (300); Characterized in that The battery pack (400) comprises an air flow outlet (401); The electric tool comprises a heat dissipation air path for dissipating heat for the battery pack (400). The first air inlet (304) of the heat dissipation air path is arranged on the joint surface of the battery pack (400) and the battery pack connector (300), and the first air outlet (306) of the heat dissipation air path is arranged on the battery pack connector (300); one side of the battery pack connector (300) provided with the first air inlet (304) is spaced from one side of the battery pack (400) provided with the air flow outlet (401), and the first air inlet (304) is communicated with the air flow outlet (401).

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