Garden tool and electric tool

Abstract

The invention discloses a gardening tool and an electric tool. The gardening tool comprises a shell, a working head used for achieving work, a motor contained in the shell, a battery pack connecting base and a fan. The motor is used for driving the working head to work. The battery pack connecting seat is provided with a connecting pole piece used for being electrically connected with the battery pack, the battery pack connecting seat is 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 heat dissipation airflow inlet and a heat dissipation airflow outlet which are respectively communicated with the inside and the outside of the battery pack connecting seat, and when the fan works, heat dissipation airflow flows into the battery pack connecting seat from the first heat dissipation airflow inlet and flows out from the heat dissipation airflow outlet to dissipate heat of the connecting pole piece. By the adoption of the technical scheme, the gardening tool and the electric tool with the battery pack connecting base capable of dissipating heat can be provided.

Description

TECHNICAL FIELD

[0001] The present application relates to a power tool, in particular to a garden tool and a power tool. BACKGROUND

[0002] The battery pack is widely used in garden tools such as chain saws, and is used to provide power for the garden tools. In the related art, when the battery pack discharges at a large current, it generates a lot of heat, which easily triggers an over-temperature protection, seriously restricting the power generation capacity of the battery pack, and the high temperature also affects the use safety of the battery pack, thereby affecting the use effect of the garden tool. SUMMARY

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

[0004] In order to achieve the above object, the present application adopts the following technical solution:

[0005] In one aspect, a garden tool is provided, comprising:

[0006] a housing;

[0007] a working head for realizing work;

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

[0009] a battery pack connecting seat provided with connecting pole pieces for electrical connection with a battery pack, the battery pack connecting seat being used to carry the battery pack, and the battery pack being detachably combined to the battery pack connecting seat;

[0010] The battery pack connecting seat comprises:

[0011] a first heat dissipation air inlet communicating the inside and outside of the battery pack connecting seat;

[0012] a heat dissipation air outlet communicating the inside and outside of the battery pack connecting seat;

[0013] The battery pack connecting seat is further provided with a fan inside, and when the fan works, heat dissipation air flows into the battery pack connecting seat from the first heat dissipation air inlet, and heat dissipation air flows out from the heat dissipation air outlet, thereby dissipating heat for the connecting pole pieces.

[0014] In some embodiments, the battery pack is inserted into the battery pack connecting seat along a first direction, the heat dissipation air outlet is arranged at the bottom of the battery pack connecting seat along the first direction, and the fan and the connecting pole pieces are both located upstream of the heat dissipation air outlet.

[0015] In some embodiments, the battery pack is inserted into the battery pack connecting seat along a first direction, the first heat dissipation air inlet is arranged at a top of the battery pack connecting seat along the first direction, and the fan and the connecting pole piece are both located downstream of the first heat dissipation air inlet.

[0016] In some embodiments, the battery pack connecting seat further comprises a second heat dissipation air inlet arranged on a joint surface of the battery pack connecting seat and the battery pack, and the second heat dissipation air inlet communicates the inside and outside of the battery pack connecting seat.

[0017] In some embodiments, the second heat dissipation air inlet and the heat dissipation air outlet form a heat dissipation air path, and the fan is arranged on the heat dissipation air path.

[0018] In some embodiments, the battery pack is inserted into the battery pack connecting seat along a first direction, and the first heat dissipation air inlet, the second heat dissipation air inlet and the heat dissipation air outlet are arranged along the first direction in sequence.

[0019] In some embodiments, the fan is fixed in the battery pack connecting seat based on a rib position and a fixing assembly of the battery pack connecting seat.

[0020] In some embodiments, an air volume of the fan is greater than or equal to 0.001 m 3 / s.

[0021] In some embodiments, a rotating speed of the fan is greater than 1000 rpm.

[0022] In some embodiments, a diameter of the fan is less than 80 mm.

[0023] In another aspect, an electric power tool is provided, comprising:

[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 connecting seat provided with a connecting pole piece for electrically connecting with a battery pack, the battery pack connecting seat being used for carrying the battery pack, and the battery pack being detachably combined to the battery pack connecting seat;

[0028] the electric power tool comprising a first heat dissipation air path and a second heat dissipation air path, the first heat dissipation air path being used for dissipating heat for the connecting pole piece, and the second heat dissipation air path being used for dissipating heat for the battery pack.

[0029] In some embodiments, the battery pack is inserted into the battery pack connector along a first direction, and the battery pack connector is provided with a heat dissipation airflow outlet at the bottom along the first direction. The heat dissipation airflow outlet connects the inside and outside of the battery pack connector, and the first heat dissipation airflow path and the second heat dissipation airflow path are both connected to the heat dissipation airflow outlet.

[0030] In some embodiments, the power tool includes a fan disposed inside the battery pack connector.

[0031] In some embodiments, the fan is disposed in the first heat dissipation air path and the second heat dissipation air path.

[0032] In some embodiments, the battery pack is inserted into the battery pack connector along a first direction, and the battery pack connector is provided with a first heat dissipation airflow inlet at the top along the first direction. The first heat dissipation airflow inlet connects the inside and outside of the battery pack connector, and the connecting electrode is located downstream of the first heat dissipation airflow inlet.

[0033] In some embodiments, a second heat dissipation airflow inlet is provided on the mating surface between the battery pack connector and the battery pack, and the second heat dissipation airflow inlet connects the inside and outside of the battery pack connector.

[0034] The advantages of this application are as follows: The battery pack connector includes a first cooling airflow inlet and a cooling airflow outlet, which are respectively connected to the inside and outside of the battery pack connector. A fan is located inside the battery pack connector. When the fan is operating, cooling airflow flows into the battery pack connector from the first cooling airflow inlet and flows out from the cooling airflow outlet, dissipating heat from the connecting electrodes, thereby dissipating heat from the electrode plates of the battery pack connected to the connecting electrodes. Under high power output conditions, the battery pack connector and the battery pack maintain a sustainable operating temperature, ensuring safety and reliability, extending operating time, and reducing the likelihood of triggering over-temperature protection. By separately setting a fan and providing a first cooling airflow inlet and outlet in the battery pack connector to form a cooling airflow path for dissipating heat from the battery pack connector and the connecting electrodes within the battery pack connector, the heat dissipation effect is excellent. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of garden tools from one perspective provided in a specific embodiment of this application;

[0036] Figure 2 This is a schematic diagram of garden tools from another perspective provided in a specific embodiment of this application;

[0037] Figure 3 yes Figure 2 Enlarged view of point A;

[0038] Figure 4This is a schematic diagram of the heat dissipation airflow outlet provided in a specific embodiment of this application;

[0039] Figure 5 This is a schematic diagram of the second heat dissipation airflow inlet provided in a specific embodiment of this application;

[0040] Figure 6 This is a schematic diagram of the internal structure of the battery pack connector provided in a specific embodiment of this application;

[0041] Figure 7 This is a schematic diagram of two first heat dissipation airflow inlets provided in a specific embodiment of this application;

[0042] Figure 8 This is a cross-sectional view of the garden tools provided in a specific embodiment of this application;

[0043] Figure 9 This is a schematic diagram of a fan provided in a specific embodiment of this application.

[0044] In the picture:

[0045] 100. Outer shell; 101. First gripping part; 102. Second gripping part;

[0046] 200. Working head;

[0047] 300. Battery pack connector; 301. First heat dissipation airflow inlet; 302. Heat dissipation airflow outlet; 303. Connecting electrode; 304. Second heat dissipation airflow inlet; 305. Rib;

[0048] 400, Battery Pack;

[0049] 500, fan; 501, plug. Detailed Implementation

[0050] Before explaining any implementation of this application in detail, it should be understood that this application is not limited to its application to the structural details and component arrangements set forth in the following description or shown in the above drawings.

[0051] In this application, the terms "comprising," "including," "having," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0052] In this application, the term "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this application generally indicates that the preceding and following related objects have an "and / or" relationship.

[0053] In this application, the terms "connection," "combination," "coupling," and "installation" can refer to direct connection, combination, coupling, or installation, or indirect connection, combination, coupling, or installation. For example, a direct connection refers to two parts or components being connected together without the need for an intermediary, while an indirect connection refers to two parts or components each being connected to at least one intermediary, with the connection achieved through the intermediary. Furthermore, "connection" and "coupling" are not limited to physical or mechanical connections or couplings, but can also include electrical connections or couplings.

[0054] In this application, those skilled in the art will understand that relative terms (e.g., “about,” “approximately,” “basically,” etc.) used in conjunction with quantities or conditions are to include the values ​​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 associated with the particular value due to manufacturing, assembly, use, etc. Such terms should also be considered as disclosing a range defined by the absolute values ​​of the two endpoints. Relative terms may refer to a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value. Numerical values ​​not using relative terms should also be disclosed as specific values ​​with tolerances. Furthermore, “basically” when expressing relative angular relationships (e.g., substantially parallel, substantially perpendicular) may refer to a certain degree (e.g., 1 degree, 5 degrees, 10 degrees or more) added to or subtracted from the indicated angle.

[0055] In this application, those skilled in the art will understand that the function performed by a component can be performed by one component, multiple components, one part, or multiple parts. Similarly, the function performed by a part can also be performed by one part, one component, or a combination of multiple parts.

[0056] In this application, the directional terms "upper," "lower," "left," "right," "front," and "rear" are used to describe the orientation and positional relationships shown in the accompanying drawings and should not be construed as limiting the embodiments of this application. Furthermore, in the context, it should be understood that when an element is mentioned as being connected "upper" or "lower" to another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected through an intermediate element. It should also be understood that directional terms such as upper side, lower side, left side, right side, front side, and rear side not only represent positive orientation but can also be understood as lateral orientation. For example, "below" can include directly below, lower left, lower right, lower front, and lower rear.

[0057] like Figures 1-9 As shown, this embodiment provides a garden tool, including a housing 100, a working head 200, a motor (not shown), a battery pack connector 300, and a fan 500. The working head 200 is used for operation, and the motor, housed in the housing 100, drives the working head 200. The battery pack connector 300 supports a battery pack 400, which is detachably connected to the connector. The connector 300 is provided with connecting plates 303. When the battery pack 400 is connected to the garden tool, it is electrically connected to the electrode plates of the battery pack 400 through the connecting plates 303 to conduct power. Due to the small contact area between the electrode plates of the battery pack 400 and the connecting plates 303, high power output results in a large voltage drop and high contact resistance in the battery path, leading to severe heat generation when a large current flows, which can easily trigger the over-temperature protection of the battery pack 400. Therefore, based on the current voltage platform, improving the heat dissipation of the battery pack connector 300 is one of the prerequisites to overcome in order to achieve high power output.

[0058] The battery pack connector 300 includes a first cooling airflow inlet 301 and a cooling airflow outlet 302, which connect the inside and outside of the battery pack connector 300, respectively. A fan 500 is disposed inside the battery pack connector 300. When the fan 500 operates, cooling airflow flows into the battery pack connector 300 from the first cooling airflow inlet 301 and flows out from the cooling airflow outlet 302, dissipating heat from the connecting electrode 303, thereby dissipating heat from the electrode plates of the battery pack 400 connected to the connecting electrode 303. Under high power output conditions, the battery pack connector 300 and the battery pack 400 maintain a sustainable operating temperature, ensuring safety and reliability, extending operating time, and reducing the likelihood of triggering over-temperature protection. By separately configuring the fan 500 and providing the first cooling airflow inlet 301 and cooling airflow outlet 302 in the battery pack connector 300 to form a cooling airflow path for dissipating heat from the connecting electrode 303 within the battery pack connector 300, the heat dissipation effect is excellent.

[0059] Garden tools can be chainsaws or lawn mowers, etc., and are not limited to any particular type. In this embodiment, a chainsaw is used as an example for illustrative purposes. The working head 200 is a cutting element located at the front of the garden tool. The outer casing 100 has a first grip 101 and a second grip 102 formed from front to back for easy operation of the garden tool. A battery pack connector 300 is provided on the left side of the first grip 101, and the battery pack 400 is connected to the lower part of 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 for easy installation and removal of the battery pack 400.

[0060] A cooling airflow outlet 302 is located at the bottom of the battery pack connector 300 along the first direction. The fan 500 and the connecting electrode 303 are both located upstream of the cooling airflow outlet 302. The cooling airflow flows through the connecting electrode 303 and then exits from the cooling airflow outlet 302, ensuring sufficient heat dissipation for the connecting electrode 303 and improving its heat dissipation effect. A first cooling airflow inlet 301 is located at the top of the battery pack connector 300 along the first direction. The fan 500 and the connecting electrode 303 are both located downstream of the first cooling airflow inlet 301. The cooling airflow flows into the connecting electrode 303 from the first cooling airflow inlet 301 and then through it, ensuring sufficient heat dissipation for the connecting electrode 303 and improving its heat dissipation effect. In one embodiment, the battery pack connector 300 forms a heat dissipation airflow path. A first heat dissipation airflow inlet 301 is the inlet of the heat dissipation airflow path, and a heat dissipation airflow outlet 302 is the outlet. A connecting electrode 303 and a fan 500 are disposed on the heat dissipation airflow path, between the first heat dissipation airflow inlet 301 and the heat dissipation airflow outlet 302. The heat dissipation airflow enters from the first heat dissipation airflow inlet 301, flows through the fan 500 and the connecting electrode 303, and then exits from the heat dissipation airflow outlet 302. The fan 500 can be located upstream or downstream of the connecting electrode 303, without limitation. In another embodiment, the fan 500 can also be installed in reverse, in which case the heat dissipation airflow path is reversed, meaning the heat dissipation airflow enters from the heat dissipation airflow outlet 302 and exits from the first heat dissipation airflow inlet 301.

[0061] The battery pack connector 300 also includes a second heat dissipation airflow inlet 304, which is disposed on the mating surface between the battery pack connector 300 and the battery pack 400. The second heat dissipation airflow inlet 304 connects the inside and outside of the battery pack connector 300. The second heat dissipation airflow inlet 304 and the heat dissipation airflow outlet 302 form a heat dissipation airflow path. The hot airflow generated by the battery pack 400 flows in through the second heat dissipation airflow inlet 304 and flows out through the heat dissipation airflow outlet 302, thereby dissipating heat from the battery pack 400. In one embodiment, a fan 500 is disposed on the heat dissipation airflow path. The hot airflow generated by the battery pack 400 flows in through the second heat dissipation airflow inlet 304, passes through the fan 500, and then flows out through the heat dissipation airflow outlet 302. By setting the fan 500, airflow is promoted, thereby achieving the effects of cooling and ventilation. In addition, when the fan 500 is working, the heat dissipation airflow flows through the battery pack 400 and then flows in through the second heat dissipation airflow inlet 304 and flows out through the heat dissipation airflow outlet 302, thereby dissipating heat from the battery pack 400. The second heat dissipation airflow inlet 304 receives both hot airflow generated by the battery pack 400 and external heat dissipation airflow that flows through the battery pack 400 to dissipate heat.

[0062] The first heat dissipation airflow inlet 301, the second heat dissipation airflow inlet 304, and the heat dissipation airflow outlet 302 are arranged sequentially along the first direction. The heat dissipation airflow passing through the connecting electrode 303 will be transferred to the battery pack 400 through heat conduction. The hot airflow of the battery pack 400 itself and the hot airflow of the connecting electrode 303 flow into the battery pack connector 300 from the second heat dissipation airflow inlet 304 and then flow out from the heat dissipation airflow outlet 302, further improving the heat dissipation of the connecting electrode 303.

[0063] like Figure 1 , Figure 4 and Figure 5 As shown, in one embodiment, there are two first heat dissipation airflow inlets 301, which are symmetrically arranged in front of and behind the battery pack connector 300 and close to the left side. The second heat dissipation airflow inlet 304 is located on the lower side of the battery pack connector 300, and the heat dissipation airflow outlet 302 is located on the right side of the battery pack connector 300.

[0064] The fan 500 is fixed in the battery pack connector 300 based on the ribs 305 and / or fixing components. In one embodiment, the battery pack connector 300 has ribs 305, and the fan 500 is snapped into the ribs 305 to fix the fan 500. In another embodiment, the fixing components include fasteners such as screws, and the battery pack connector 300 has a connecting hole. The screw passes through the fan 500 and connects to the connecting hole to fix the fan 500. In yet another embodiment, the battery pack connector 300 has a limiting bracket formed by the ribs 305 and a connecting hole. The fixing components include fasteners such as screws. The fan 500 is limited by the limiting bracket, and the screw passes through the fan 500 and connects to the connecting hole to fix the fan 500. In one embodiment, the battery pack connector 300 is a housing structure. The housing structure itself forms a limiting bracket adapted to the shape of the fan 500. The fan 500 is limited by the limiting bracket, and other components within the battery pack connector 300 abut against the fan 500, thus fixing the fan 500. In another embodiment, the battery pack connector 300 is a housing structure. The housing structure itself forms a limiting bracket adapted to the shape of the fan 500, and the housing structure has a connection hole. The fan 500 is limited by the limiting bracket, and a screw passes through the fan 500 and connects to the connection hole, thus fixing the fan 500. A circuit board is provided inside the garden tool. The plug 501 of the fan 500 is connected to the circuit board, and the operation of the fan 500 is controlled by the circuit board. Optionally, the plug 501 can be connected to a component inside the battery pack connector 300 and then connected to the circuit board through this component. Optionally, the plug 501 can also be directly connected to the circuit board. This application does not limit the connection method between the plug 501 and the circuit board.

[0065] In some embodiments, fan 500 starts synchronously after the garden tool is started, and stops synchronously after the garden tool is turned off. In some embodiments, fan 500 starts after a first preset time after the garden tool is started, and stops synchronously after the garden tool is turned off. The first preset time is set based on empirical values ​​to avoid wasting power. In some embodiments, fan 500 starts synchronously after the garden tool is started, and continues to run for a second preset time after the garden tool is turned off, where the second preset time is set based on empirical values ​​to adequately dissipate heat from the connecting electrode 303 and the battery pack 400. In some embodiments, fan 500 starts after a first preset time after the garden tool is started, and continues to run for a second preset time after the garden tool is turned off. Optionally, the garden tool and fan 500 can share a single start / stop switch; alternatively, the garden tool and fan 500 can each use their own separate start / stop switches.

[0066] In some embodiments, the airflow of fan 500 is greater than or equal to 0.001 m³ / s.3 / s. Optionally, the airflow of fan 500 is 0.002m³ / s. 3 / s. Optionally, the airflow of fan 500 is 0.005m³ / s. 3 / s. Optionally, the airflow of fan 500 is 0.0085m³ / s. 3 / s. In some embodiments, the fan 500 rotates at a speed greater than 1000 rpm. Optionally, the fan 500 rotates at a speed of 1200 rpm, 1500 rpm, or 2000 rpm, etc., to ensure that the fan 500 has sufficient capacity to promote airflow, accelerate heat transfer, and ensure heat dissipation. In some embodiments, the diameter of the fan 500 is less than 80 mm. Optionally, the diameter of the fan 500 is 75 mm, 70 mm, 65 mm, 60 mm, 55 mm, or smaller. The smaller size of the fan 500 makes the size of the battery pack connector 300 more suitable, and the structure of the chainsaw is compact.

[0067] In one embodiment, the garden tool further includes an independent housing added to the outside of the battery pack connector 300, in which the fan 500 is placed, and the independent housing is in communication with the battery pack connector 300. Since the independent housing and the battery pack connector 300 are in communication, they are integrated to form a battery pack connector 300 including the independent housing. In this case, the fan 500 can also promote airflow within the battery pack connector 300, thus serving a heat dissipation function. Therefore, the battery pack connector 300 defined in this application not only refers to the battery pack connector 300 itself, but also includes the battery pack connector 300 and any external housing communicating with it; however, this application does not limit the shape or structure of the external housing.

[0068] like Figures 1-9 As shown, this embodiment also provides a power tool, including a housing 100, a working head 200, a motor, and a battery pack connector 300. The working head 200 is used to perform work. The motor, housed in the housing 100, drives the working head 200. The battery pack connector 300 is provided with connecting plates 303 for electrical connection with a battery pack 400. The battery pack connector 300 supports the battery pack 400, which is detachably connected to it. When the battery pack 400 is connected to the power tool, the connecting plates 303 are electrically connected to the electrode plates of the battery pack 400 to conduct power. The power tool includes a first cooling airflow path and a second cooling airflow path. The first cooling airflow path dissipates heat from the connecting plates 303, and the second cooling airflow path dissipates heat from the battery pack 400.

[0069] By setting up a first heat dissipation airflow path, the cooling airflow flows into the battery pack connector 300, passes through the connecting electrode 303, and then flows out of the battery pack connector 300, thereby dissipating heat from the connecting electrode 303. This prevents the electrode plates of the battery pack 400 connected to the connecting electrode 303 from overheating due to high temperature, which could trigger over-temperature protection. By setting up a second heat dissipation airflow path, the cooling airflow flows into the mating surface between the battery pack 400 and the battery pack connector 300 and flows out of the battery pack connector 300, thereby dissipating heat from the battery pack 400 and preventing it from overheating and triggering over-temperature protection. By dissipating heat from the connecting electrode 303 and the battery pack 400 separately, the heat dissipation effect is improved. Under high power output conditions, the battery pack connector 300 and the battery pack 400 maintain a sustainable operating temperature, ensuring safety and reliability, extending operating time, and reducing the likelihood of triggering over-temperature protection.

[0070] The battery pack 400 is inserted into the battery pack connector 300 along the first direction, facilitating the installation of the battery pack 400 into the battery pack connector 300. A heat dissipation airflow outlet 302 is provided at the bottom along the first direction of the battery pack connector 300. The heat dissipation airflow outlet 302 connects the inside and outside of the battery pack connector 300. Both the first and second heat dissipation airflow paths are connected to the heat dissipation airflow outlet 302. The heat dissipation airflow from the battery pack 400 and the connecting electrode 303 flows out of the battery pack connector 300 from the heat dissipation airflow outlet 302, simplifying the structure.

[0071] The power tool includes a fan 500, which is located inside the battery pack connector 300. The fan 500 promotes airflow, thereby achieving cooling and ventilation. The fan 500 is located in both the first and second cooling air passages. The cooling airflow from both passages passes through the fan 500 and exits from the battery pack connector 300. This means the fan 500 simultaneously cools and ventilates both cooling air passages, further improving the heat dissipation of the battery pack 400 and the connecting electrode 303.

[0072] The battery pack connector 300 is provided with a first heat dissipation airflow inlet 301 at the top along the first direction. The first heat dissipation airflow inlet 301 connects the inside and outside of the battery pack connector 300. The connecting electrode 303 is located downstream of the first heat dissipation airflow inlet 301. The heat dissipation airflow flows in from the first heat dissipation airflow inlet 301 and then flows through the connecting electrode 303, ensuring sufficient heat dissipation for the connecting electrode 303 and improving the heat dissipation effect of the connecting electrode 303.

[0073] A second heat dissipation airflow inlet 304 is provided on the mating surface of the battery pack connector 300 and the battery pack 400. The second heat dissipation airflow inlet 304 connects the inside and outside of the battery pack connector 300. The hot airflow generated by the battery pack 400 flows into the battery pack connector 300 through the second heat dissipation airflow inlet 304, ensuring sufficient heat dissipation for the battery pack 400 and improving the heat dissipation effect of the battery pack 400.

[0074] The power tool can be a chainsaw or a lawnmower, etc., and is not limited to any particular type. In this embodiment, the power tool is a chainsaw, and the working head 200 is a cutting element.

[0075] The specific structure of the battery pack connector 300, such as the structural shape and positional relationship of the first heat dissipation airflow inlet 301, the heat dissipation airflow outlet 302 and the second heat dissipation airflow inlet 304, as well as the installation method and parameters of the fan 500, can be set with reference to garden tools and will not be elaborated further.

[0076] The foregoing has shown and described the basic principles, main features, and advantages of this application. Those skilled in the art should understand that the above embodiments do not limit this application in any way, and all technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of this application.

Claims

1. A garden tool, comprising: a housing (100); a working head (200) for performing work; a motor accommodated in the housing (100) for driving the working head (200) to work; a battery pack connecting seat (300) provided with connecting poles (303) for electrically connecting with a battery pack (400), the battery pack connecting seat (300) being used for carrying the battery pack (400), the battery pack (400) being detachably combined with the battery pack connecting seat (300); characterized in that the battery pack connecting seat (300) comprises: a first heat dissipation air inlet (301) communicating inside and outside of the battery pack connecting seat (300); a heat dissipation air outlet (302) communicating inside and outside of the battery pack connecting seat (300); the battery pack connecting seat (300) is further provided with a fan (500), when the fan (500) works, heat dissipation air flows into the battery pack connecting seat (300) from the first heat dissipation air inlet (301), and heat dissipation air flows out from the heat dissipation air outlet (302), so as to dissipate heat for the connecting poles (303).

2. The garden tool of claim 1, wherein The battery pack (400) is inserted into the battery pack connecting seat (300) along a first direction, the heat dissipation air outlet (302) is arranged at the bottom of the battery pack connecting seat (300) along the first direction, and the fan (500) and the connecting poles (303) are located upstream of the heat dissipation air outlet (302).

3. The garden tool of claim 1, wherein The battery pack (400) is inserted into the battery pack connecting seat (300) along a first direction, the first heat dissipation air inlet (301) is arranged at the top of the battery pack connecting seat (300) along the first direction, and the fan (500) and the connecting poles (303) are located downstream of the first heat dissipation air inlet (301).

4. The garden tool of claim 1, wherein The battery pack connecting seat (300) further comprises a second heat dissipation air inlet (304), the second heat dissipation air inlet (304) is arranged on the combined surface of the battery pack connecting seat (300) and the battery pack (400), and the second heat dissipation air inlet (304) communicates inside and outside of the battery pack connecting seat (300).

5. A garden tool according to claim 4, characterised in that The second heat dissipation air inlet (304) and the heat dissipation air outlet (302) form a heat dissipation air path, and the fan (500) is arranged on the heat dissipation air path.

6. The garden tool of claim 4, wherein, The battery pack (400) is inserted into the battery pack connecting seat (300) along a first direction, the first heat dissipation air inlet (301), the second heat dissipation air inlet (304) and the heat dissipation air outlet (302) are arranged in sequence along the first direction.

7. The garden tool of claim 1, wherein The fan (500) is fixed in the battery pack connecting seat (300) based on a rib position (305) and / or a fixing assembly of the battery pack connecting seat (300).

8. The garden tool of claim 1, wherein, The air volume of the fan (500) is greater than or equal to 0.001 m 3 / s.

9. The garden tool of claim 1, wherein, The rotating speed of the fan (500) is greater than 1000 rpm.

10. The garden tool of claim 1, wherein, The diameter of the fan (500) is less than 80 mm.

11. An electric tool, comprising: a housing (100); a working head (200) for performing work; A motor is accommodated in the housing (100) and used to drive the working head (200) to work. A battery pack connecting seat (300) is provided with connecting poles (303) for electrically connecting with a battery pack (400), and is used to carry the battery pack (400) which is detachably combined with the battery pack connecting seat (300). The electric tool comprises a first heat dissipation air path and a second heat dissipation air path, the first heat dissipation air path is used to dissipate heat for the connecting poles (303), and the second heat dissipation air path is used to dissipate heat for the battery pack (400).

12. The power tool of claim 11, wherein, The battery pack (400) is inserted into the battery pack connecting seat (300) along a first direction, the bottom of the battery pack connecting seat (300) along the first direction is provided with a heat dissipation air outlet (302) which communicates the inside and outside of the battery pack connecting seat (300), and the first heat dissipation air path and the second heat dissipation air path both communicate with the heat dissipation air outlet (302).

13. The power tool of claim 11, wherein, The electric tool comprises a fan (500) which is arranged inside the battery pack connecting seat (300).

14. The power tool of claim 13, wherein, The fan (500) is arranged in the first heat dissipation air path and the second heat dissipation air path.

15. The power tool of claim 11, wherein, The battery pack (400) is inserted into the battery pack connecting seat (300) along a first direction, the top of the battery pack connecting seat (300) along the first direction is provided with a first heat dissipation air inlet (301) which communicates the inside and outside of the battery pack connecting seat (300), and the connecting poles (303) are located downstream of the first heat dissipation air inlet (301).

16. The power tool of claim 11, wherein, The battery pack connecting seat (300) is provided with a second heat dissipation air inlet (304) on the combined surface with the battery pack (400), and the second heat dissipation air inlet (304) communicates the inside and outside of the battery pack connecting seat (300).

Images