A charging device

Abstract

The present application discloses a charging device, including a shell, at least two receiving parts are arranged on the shell, and a battery pack is suitable for being detachably installed in the receiving parts to obtain electric energy; a heat dissipation fan; and a heat dissipation pipe, the heat dissipation pipe includes a first ventilation part and a second ventilation part which are interconnected, at least two first ventilation openings are opened on the first ventilation part, each first ventilation opening is arranged corresponding to each receiving part to connect each receiving part with the first ventilation part, a second ventilation opening is opened on the second ventilation part, the second ventilation opening is arranged corresponding to the heat dissipation fan to connect the heat dissipation fan and the second ventilation part, and a trigger member is further provided at each first ventilation opening of the first ventilation part, the trigger member is suitable for being linked with the battery pack to open or close the first ventilation opening; when the battery pack is separated from the receiving part, the trigger member closes the first ventilation opening; when the battery pack is installed in the receiving part, the trigger member opens the first ventilation opening, and the heat dissipation fan can drive airflow into the receiving part to dissipate heat for the battery pack.

Description

Technical Field

[0001] The present application relates to the technical field of electric tools, and in particular to a charging device. Background Art

[0002] With the development and progress of power tool technology, household power tools have entered thousands of households. In fact, many users own multiple power tools at the same time, such as hair dryers, chain saws, electric drills, etc. These power tools are equipped with one or more battery packs for power supply, so users need to spend a long time to charge the battery packs one by one after each use of the power tool. In order to shorten the user's waiting time, power tool manufacturers provide a multi-pack charging device that can charge multiple battery packs at the same time to improve charging efficiency.

[0003] Since the multi-pack charging device charges multiple battery packs at the same time, the multiple battery packs will generate a lot of heat during the charging process, so a heat dissipation device is required to dissipate the heat of the battery packs to maintain the temperature of the battery packs within a reasonable range. Existing multi-pack charging devices dissipate heat for multiple battery packs by setting up multiple fans, but setting up multiple fans will occupy space in the housing, resulting in an increase in the size of the multi-pack charging device and an increase in cost.

[0004] For example, CN112636432A discloses a charging device, "a housing, a support part and a plurality of charging parts located around the support part, the charging part including a charging position matched with a battery pack and a plurality of ventilation fans corresponding to the charging positions and mounted on the support part, the ventilation fans are suitable for driving airflow to flow through one of the first ventilation opening and the second ventilation opening and out of the other to dissipate heat from the battery pack". The application dissipates heat from the battery packs in the two charging positions by arranging two ventilation fans in the support part. The arrangement of the two ventilation fans results in a larger volume of the support part for mounting the ventilation fans; in addition, the two ventilation fans stop and rotate at the same time. When only one of the two charging positions is used to charge the battery pack, the ventilation fan corresponding to the charging position where no battery pack is placed will also rotate together, resulting in unnecessary waste. Summary of the invention

[0005] One object of the present application is to provide a charging device that can reduce the size of the charging device and reduce costs while meeting the heat dissipation requirements of a battery pack.

[0006] In order to achieve the above objectives, the technical solution adopted in this application is: a charging device, comprising:

[0007] A housing, wherein at least two receiving parts are provided on the housing, each of which is provided with a charging part, and the battery pack is suitable for being detachably mounted in the receiving part and electrically connected to the charging part to obtain electrical energy;

[0008] A cooling fan, wherein the cooling fan is disposed in the housing;

[0009] And, a heat dissipation pipe, the heat dissipation pipe comprises a first ventilation part and a second ventilation part which are interconnected, the first ventilation part is provided with at least two first ventilation openings, each of the first ventilation openings is arranged correspondingly with each of the receiving parts to connect each of the receiving parts with the first ventilation part, the second ventilation part is provided with a second ventilation opening, the second ventilation opening is arranged correspondingly with the heat dissipation fan to connect the heat dissipation fan with the second ventilation part, the first ventilation part is further provided with a trigger at each of the first ventilation openings, the trigger is suitable for linking with the battery pack to open or close the first ventilation opening;

[0010] When the battery pack is separated from the receiving portion, the trigger member closes the first vent; when the battery pack is installed in the receiving portion, the trigger member opens the first vent, and the cooling fan can drive airflow into the receiving portion to dissipate heat for the battery pack.

[0011] Preferably, the trigger member is movably arranged on the first ventilation portion, and an elastic return member is further arranged between the trigger member and the first ventilation portion; when the battery pack is installed in the accommodating portion, the trigger member is pushed from the first working position to the second working position by the battery pack; when the battery pack is separated from the accommodating portion, the trigger member is pushed from the second working position to the first working position by the elastic return member; when the trigger member is in the first working position, the trigger member closes the first vent; and when the trigger member is in the second working position, the trigger member opens the first vent.

[0012] As another preferred embodiment, the first ventilation part is located below the receiving part, each of the first ventilation ports is arranged corresponding to the bottom of each of the receiving parts, a ventilation hole is opened at the bottom of the receiving part, and the receiving part can be connected with the first ventilation part through the ventilation hole and the first ventilation port.

[0013] Further preferably, the position of the ventilation hole corresponds to the position of the heat dissipation hole on the bottom of the battery pack, so that when the battery pack is installed in the accommodating portion, the ventilation hole and the heat dissipation hole on the bottom of the battery pack do not block each other.

[0014] Furthermore, the trigger member includes a main body, an abutment portion that cooperates with the battery pack, and a connection portion connected to the elastic return member, the abutment portion is arranged on the upper end surface of the main body, the connection portion is arranged on the lower end surface of the main body, and a clearance hole for the abutment portion to pass through is opened at the bottom of the receiving portion. When the trigger member is in the first working position, the main body is attached to the bottom of the receiving portion to close the ventilation hole and the first ventilation port, and the abutment portion extends into the receiving portion.

[0015] Furthermore, the main body is in a flat plate shape, and a shape of a horizontal projection of the main body matches a shape of a horizontal projection of the first vent.

[0016] Furthermore, the shell includes a top wall, a bottom wall arranged opposite to the top wall, and a side wall located between the top wall and the bottom wall, the top wall, the bottom wall and the side walls together enclose a accommodating cavity, the accommodating portion, the heat dissipation pipe and the heat dissipation fan are all arranged in the accommodating cavity, at least one of the side walls is provided with a third vent, the third vent connects the accommodating cavity and the external environment, so that the airflow flowing out of the heat dissipation fan can flow out of the accommodating cavity from the third vent.

[0017] Furthermore, the cooling fan is arranged on the bottom wall, and the cooling fan includes a first air outlet opposite to the second air outlet and a second air outlet opposite to the third air outlet, the air inlet or air outlet direction of the first air outlet is parallel to the vertical direction, and the air inlet or air outlet direction of the second air outlet is parallel to the horizontal direction.

[0018] Furthermore, the first ventilation portion extends in a horizontal direction, the second ventilation portion extends in a vertical direction, the top end of the second ventilation portion is connected to the first ventilation portion, each of the first ventilation openings is arranged at the top end surface of the first ventilation portion, and the second ventilation openings are arranged at the bottom end surface of the second ventilation portion, so that the cooling fan can drive the airflow to dissipate heat for the battery packs in each of the housing portions at the same time.

[0019] Furthermore, the receiving portion is arranged in the accommodating cavity in a manner that it does not protrude from the shell, and the opening of the receiving portion is located on the top wall. A slide rail is also provided on the side wall of the receiving portion to cooperate with the slide rail on the battery pack. The slide rail is set away from the central axis of the receiving portion so that the battery pack can only be installed in the receiving portion in a forward direction.

[0020] Compared with the prior art, the beneficial effects of this application are:

[0021] (1) The heat dissipation pipe comprises a first ventilation part and a second ventilation part which are interconnected. The first ventilation part is provided with a first ventilation opening, each of which is provided corresponding to each receiving part. The second ventilation part is provided with a second ventilation opening, each of which is provided corresponding to a heat dissipation fan. The heat dissipation fan can drive airflow to dissipate heat for the battery packs in each receiving part, so that only one heat dissipation fan is needed to dissipate heat for the battery packs in multiple receiving parts, without the need to provide a corresponding heat dissipation fan for each receiving part.

[0022] (2) The first ventilation portion is further provided with a trigger member at the first ventilation opening, which can open the first ventilation opening when the battery pack is installed in the receiving portion, and close the first ventilation opening when the battery pack is separated from the receiving portion, so that the airflow driven by the cooling fan can only flow into the receiving portion where the battery pack is installed, but cannot flow into the receiving portion where the battery pack is not installed, thereby avoiding waste of cooling airflow and improving cooling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the three-dimensional structure of the charging device of this application.

[0024] Figure 2 This is a cross-sectional view of the charging device of the present application.

[0025] Figure 3 It is a cross-sectional view of the shell and the receiving portion of the charging device of the present application.

[0026] Figure 4 for Figure 3 A local enlarged schematic diagram of point A in the middle.

[0027] Figure 5 It is an exploded schematic diagram of the heat dissipation fan, heat dissipation pipe, trigger component and elastic reset component in the charging device of the present application.

[0028] Figure 6 This is a schematic diagram of the structure of the bottom side of the heat dissipation pipe in the charging device of the present application.

[0029] Figure 7 This is a schematic structural diagram of the top side of the battery pack in the charging device of the present application.

[0030] Figure 8 This is a schematic structural diagram of the bottom side of the battery pack in the charging device of the present application.

[0031] Fig. 9 Schematic diagram of airflow direction when a battery pack is installed in the right receiving portion of the charging device of the present application.

[0032] Fig.10 This is a schematic diagram of the airflow direction when the battery pack is installed in the left receiving portion of the charging device of the present application.

[0033] Fig.11 This is a schematic diagram of the airflow direction when battery packs are installed in both side receiving parts of the charging device of the present application.

[0034] In the figure: 100, shell; 110, top wall; 120, bottom wall; 130, side wall; 140, accommodating cavity; 150, third vent; 200, accommodating part; 210, slide rail; 220, vent; 230, give way hole; 240, charging part; 300, cooling fan; 310, first vent; 320, second vent; 400, cooling pipe; 410, first ventilation part; 420, first vent; 430, second ventilation part; 440, second vent; 500, trigger; 510, main body; 520, abutment part; 530, connecting part; 600, battery pack; 610, slide groove; 620, cooling hole; 630, electrical connecting part; 700, elastic reset part. DETAILED DESCRIPTION

[0035] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0036] In the description of the present application, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of narrating the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and cannot be understood as limiting the specific scope of protection of the present application.

[0037] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0038] The terms "including" and "having" and any variations thereof in the specification and claims of this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0039] like Figure 1-8 As shown, the present application provides a charging device, which includes:

[0040] The housing 100 is provided with two receiving parts 200, and the receiving part 200 is provided with a charging part 240. The battery pack 600 is suitable for being detachably installed in the receiving part 200 and electrically connected to the charging part 240, so that the charging device can provide power to the battery pack 600. The user can select one of the receiving parts 200 to install the battery pack 600 for charging; or the battery pack 600 can be installed in both receiving parts 200 for charging at the same time, so as to shorten the charging time of multiple battery packs 600 and improve the charging efficiency;

[0041] A heat dissipation fan 300, wherein the heat dissipation fan 300 is disposed in the housing 100;

[0042] And, the heat dissipation pipe fitting 400, the heat dissipation pipe fitting 400 includes a first ventilation part 410 and a second ventilation part 430 which are interconnected, the first ventilation part 410 is provided with two first ventilation openings 420, the two first ventilation openings 420 are respectively arranged corresponding to the two receiving parts 200, so that the two receiving parts 200 are respectively connected to the first ventilation part 410, and the second ventilation part 430 is provided with a second ventilation opening 440, the second ventilation opening 440 is arranged corresponding to the heat dissipation fan 300 to connect the heat dissipation fan 300 and the second ventilation part 430, and then the heat dissipation fan 300 can drive the airflow to flow into or out of the receiving part 200 after passing through the first ventilation part 410 and the second ventilation part 430, so as to dissipate the heat of the battery pack 600 in each receiving part 200, thereby maintaining the temperature of the battery pack 600 within a reasonable range, avoiding the temperature of the battery pack 600 being too high during charging, thereby affecting the service life of the battery pack 600.

[0043] Reference Figure 1-8 In the embodiment shown, the shell 100 includes a top wall 110, a bottom wall 120 arranged opposite to the top wall 110, and a side wall 130 located between the top wall 110 and the bottom wall 120. The top wall 110, the bottom wall 120 and the side wall 130 are together arranged to form a accommodating cavity 140, and the accommodating portion 200, the heat dissipation fan 300 and the heat dissipation pipe 400 are all arranged in the accommodating cavity 140.

[0044] Further, the receiving portion 200 is arranged in the accommodating cavity 140 in a manner that it does not protrude from the housing 100, the opening of the receiving portion 200 is located on the top wall 110 of the housing 100, and the charging portion 240 is arranged at the bottom of the receiving portion 200 opposite to the opening, and the battery pack 600 is suitable for being directly installed in the receiving portion 200 from the opening. When the bottom of the battery pack 600 abuts against the bottom of the receiving portion 200, the electrical connection portion 630 on the battery pack 600 is automatically electrically connected to the charging portion 240 to charge the battery pack 600. The charging portion 240 can be implemented as a wiring terminal or a magnetic terminal according to the size and type of the battery pack 600. In the embodiment provided in the present application, the charging portion 240 is implemented as a wiring terminal.

[0045] The heat dissipation fan 300 is disposed on the bottom wall 120 of the housing 100. The heat dissipation fan 300 includes a first air outlet 310 and a second air outlet 320 opposite to the first air outlet 310. The air inlet or air outlet direction of the first air outlet 310 is parallel to the vertical direction, and the air inlet or air outlet direction of the second air outlet 320 is parallel to the horizontal direction. When the heat dissipation fan 300 rotates forward, the air flow can flow from the first air outlet 310 to the second air outlet 320; when the heat dissipation fan 300 rotates reversely, the air flow can flow from the second air outlet 320 to the first air outlet 310.

[0046] The heat dissipation pipe fitting 400 is arranged between the accommodation portion 200 and the heat dissipation fan 300 to connect the accommodation portion 200 and the heat dissipation fan 300. The heat dissipation pipe fitting 400 specifically includes a first ventilation portion 410 extending in a horizontal direction and a second ventilation portion 430 extending in a vertical direction. The top end of the second ventilation portion 430 is connected to the middle portion of the first ventilation portion 410, so that the heat dissipation pipe fitting 400 has a T-shaped structure as a whole. The first ventilation portion 410 is located below the accommodation portion 200. Two first ventilation ports 420 are arranged on the top surface of the first ventilation portion 410 and correspond to the bottoms of the two accommodation portions 200 respectively. The second ventilation port 440 is arranged at the bottom end portion of the second ventilation portion 430 and corresponds to the first air port 310 of the heat dissipation fan 300. The bottom of the housing portion 200 is also provided with a vent hole 220, which is provided on one side of the charging portion 240. The vent hole 220 is adapted to connect the housing portion 200 and the first ventilation portion 410 together with the first ventilation port 420, so that the housing portion 200, the first ventilation portion 410, and the second ventilation portion 430 form a heat dissipation channel. Specifically, when the battery pack 600 is installed in the housing portion 200 for charging, the airflow in the housing portion 200 can flow into the first ventilation portion 410 through the vent hole 220 and the first ventilation port 420 under the action of the heat dissipation fan 300, and then flow into the first air port 310 of the heat dissipation fan 300 from the second air port 440 after passing through the first ventilation portion 410 and the second ventilation portion 430, and finally flow out from the second air port 320 of the heat dissipation fan 300, thereby achieving heat dissipation of the battery pack 600. Since each housing section 200 has a corresponding first vent 420 and a vent hole 220 opened at the bottom of each housing section 200, the airflow in each housing section 200 can flow into the first ventilation section 410 through the vent hole 220 and the first vent 420. Therefore, only one cooling fan 300 needs to be correspondingly arranged at the second ventilation section 430 in the shell 100 to dissipate heat for the battery pack 600 in each housing section 200. While meeting the heat dissipation requirements of multiple battery packs 600, the number of cooling fans 300 is reduced, and the volume of the charging device shell 100 is correspondingly reduced, which is convenient for users to carry and store the charging device.

[0047] It is worth mentioning that in order to prevent the existing battery pack 600 from overheating during the charging and discharging process, a heat dissipation hole 620 is usually provided on the outer shell of the battery pack 600 so that external air can enter the battery pack 600 to take away the heat generated by the components. Figure 7-8 In the illustrated embodiment, heat dissipation holes 620 are provided on the top and the bottom opposite to the top of the battery pack 600. External airflow can flow in from the heat dissipation holes 620 on one side and flow out from the heat dissipation holes 620 on the other side to dissipate heat from components. Based on the above-mentioned heat dissipation hole 620 structure, the position of the heat dissipation hole 620 at the bottom of the housing portion 200 corresponds to the position of the heat dissipation hole 620 at the bottom of the battery pack 600, so that when the battery pack 600 is installed in the housing portion 200, the ventilation hole 220 is aligned with the heat dissipation hole 620, and the ventilation hole 220 and the heat dissipation hole 620 do not block each other, and then when the cooling fan 300 dissipates heat to the battery pack 600, the external airflow can flow into the battery pack 600 from the heat dissipation hole 620 at the top of the battery pack 600, and then flow from the heat dissipation hole 620 at the bottom of the battery pack 600, the ventilation hole 220 of the housing portion 200 and the first ventilation port 420 of the first ventilation portion 410 to the first ventilation portion 410, and the airflow can directly contact the components inside the battery pack 600, further improving the heat dissipation effect.

[0048] In some preferred embodiments, a slide rail 210 is further provided on the side wall 130 of the receiving portion 200 to cooperate with a slide groove 610 on the outer shell of the battery pack 600 to further fix the battery pack 600 . Furthermore, the slide rail 210 is disposed on the side wall 130 of the accommodating portion 200 away from the central axis, so that the battery pack 600 can only be installed in the accommodating portion 200 in the forward direction. The so-called forward installation means that the battery pack 600 is installed in the accommodating portion 200 when the electrical connection portion 630 is aligned with the charging portion 240 and the heat dissipation hole 620 is aligned with the ventilation hole 220. Since the charging portion 240 is implemented as a wiring terminal protruding from the bottom end surface of the accommodating portion 200, the battery pack 600 is installed in the accommodating portion 200 when the electrical connection portion 630 is not aligned with the charging portion 240, which easily causes the wiring terminal to be squeezed and damaged. Therefore, the slide rail 210 limits the battery pack 600 to be installed in the forward direction, which can avoid damage to the wiring terminal caused by the user's incorrect installation of the battery pack 600, and can also avoid the heat dissipation hole 620 from being misaligned with the ventilation hole 220. The heat dissipation hole 620 and the ventilation hole 220 block each other, and the airflow cannot flow into the battery pack 600, resulting in reduced heat dissipation efficiency.

[0049] A third vent 150 is also provided on the side wall 130 of at least one side of the shell 100. The third vent 150 is suitable for connecting the accommodating cavity 140 and the external environment. The airflow flowing out from the second air outlet 320 of the cooling fan 300 to the accommodating cavity 140 can flow out of the accommodating cavity 140 through the third air outlet, thereby avoiding the accumulation of hot air flow in the accommodating cavity 140, which leads to reduced heat dissipation efficiency.

[0050] like Figure 9-11 As shown, when the battery pack 600 is installed in the receiving portion 200 for charging, the cooling fan 300 rotates, and the cold air flow above the battery pack 600 can flow into the battery pack 600 from the heat dissipation holes 620 at the top of the battery pack 600, and become hot air flow after contacting the components inside the battery pack 600. The hot air flow can flow out of the battery pack 600 from the heat dissipation holes 620 at the bottom of the battery pack 600, and then flow into the first ventilation part 410 and the second ventilation part 430 through the ventilation holes 220 and the first ventilation opening 420, and finally the hot air flow flows out from the second air outlet 320 of the cooling fan 300 through the third ventilation opening 150 to the outside of the housing 100. Of course, the cooling fan 300 can also be reversed so that the cold air flow flows in the opposite direction, flows in from the third ventilation opening 150, and flows out from the heat dissipation holes 620 at the top of the battery pack 600. In addition, the airflow in or out of the heat dissipation hole 620 at the top of the battery pack 600 is parallel to the vertical direction, and the airflow in or out of the third ventilation hole 150 on the side wall 130 of the shell 100 is parallel to the horizontal direction, thereby ensuring that the airflows do not interfere with each other and ensuring the heat dissipation effect.

[0051] In addition, the number of the receiving sections 200 is not limited to two. Three or more receiving sections 200 can be provided on the shell 100. Accordingly, it is only necessary to open the first ventilation openings 420 on the first ventilation section 410, which is the same number as the receiving sections 200. Each first ventilation opening 420 corresponds to each receiving section 200 one by one. The hot air flow generated by the battery pack 600 in the receiving section 200 can flow from each first ventilation opening 420 into the first ventilation section 410 and the second ventilation section 430, and then flow out to the outside of the shell 100 through the third ventilation opening 150 through the cooling fan 300, so as to dissipate heat for the battery pack 600 in each receiving section 200. There is no need to provide a cooling fan 300 on each receiving section 200, which results in a larger size of the charging device and a corresponding increase in the cost of the charging device.

[0052] like Figure 2 and Figure 5-6As shown, the first ventilation part 410 is further provided with a trigger 500 at the first ventilation opening 420, and the trigger 500 is adapted to be linked with the battery pack 600 to open the first ventilation opening 420 when the battery pack 600 is installed in the receiving part 200, and to close the first ventilation opening 420 when the battery pack 600 is separated from the receiving part 200. Specifically, the trigger 500 is movably provided on the first ventilation part 410, and the trigger 500 can move up and down between a first working position and a second working position, and when the trigger 500 is in the first working position, the trigger 500 closes the first ventilation opening 420, and when the trigger 500 is in the second working position, the trigger 500 opens the first ventilation opening 420. An elastic reset member 700 is also provided between the trigger member 500 and the first ventilation portion 410. One end of the elastic reset member 700 is connected to the trigger member 500, and the other end is connected to the first ventilation portion 410. The elastic reset member 700 is suitable for continuously applying a force to the trigger member 500 to move toward the first working position, so that the trigger member 500 can be reset to the first working position after the external force acting on the trigger member 500 is removed.

[0053] Specifically, when the battery pack 600 is not installed in the accommodating portion 200, the trigger member 500 is maintained in the first working position under the action of the elastic return member 700, the trigger member 500 closes the first vent 420, and the airflow cannot flow into or out of the accommodating portion 200; when the battery pack 600 is installed in the accommodating portion 200, the battery pack 600 pushes the trigger member 500 to move from the first working position to the second working position, the trigger member 500 opens the first vent 420, and the airflow can flow into or out of the accommodating portion 200 to dissipate heat from the battery pack 600. The trigger member 500 is linked with the battery pack 600 and the elastic return member 700, so that when the battery pack 600 is installed in the housing portion 200, the first vent 420 can be automatically opened, and when the battery pack 600 is separated from the housing portion 200, the first vent 420 can be automatically closed, so that the airflow can only flow into the charging portion 240 where the battery pack 600 is installed, thereby preventing the airflow from overflowing from the housing portion 200 where the battery pack 600 is not installed, resulting in reduced heat dissipation efficiency.

[0054] The elastic return member 700 can be any material that has elastic energy storage and can push the trigger member 500 to the first working position after the pressing force of the battery pack 600 on the trigger member 500 is removed, such as elastic rubber, elastic spring, etc. In this embodiment, the elastic return member 700 is a compression spring, one end of the compression spring is connected to the trigger member 500, and the other end is connected to the first ventilation portion 410. When the battery pack 600 is installed in the receiving portion 200 and presses the trigger member 500, the trigger member 500 moves from the first working position to the second working position, and the compression spring is compressed and deformed; when the battery pack 600 is separated from the receiving portion 200, the external force applied to the trigger member 500 is removed, and the compression spring quickly pushes the trigger member 500 to the first working position.

[0055] The trigger member 500 includes a main body 510, an abutting portion 520 and a connecting portion 530. The abutting portion 520 is arranged on the upper end surface of the main body 510, and the connecting portion 530 is arranged on the lower end surface of the main body 510. The main body 510 is in the shape of a plate, and the horizontal projection shape of the main body 510 is adapted to the horizontal projection shape of the first vent 420, thereby ensuring that the main body 510 can close the first vent 420. The abutting portion 520 and the connecting portion 530 are both cylindrical. The abutting portion 520 extends toward the receiving portion 200, and the connecting portion 530 extends away from the receiving portion 200. A clearance hole 230 for the abutting portion 520 to pass through is provided at the bottom of the receiving portion 200. A cylindrical cavity is opened inside the connecting portion 530. One end of the elastic reset member 700 is installed in the cylindrical cavity of the connecting portion 530, and the other end is connected to the first vent 410 to apply a force to the trigger member 500 to move to the first working position. When the trigger member 500 is in the first working position, the abutment portion 520 extends through the clearance hole 230 into the accommodating portion 200, and the upper end surface of the main body 510 is attached to the bottom of the accommodating portion 200. The main body 510 closes the first vent 420 and the vent 220 at the same time; when the trigger member 500 is in the second working position, the trigger member 500 is pushed by the battery pack 600 until the top end surface of the abutment portion 520 is flush with the bottom end surface of the accommodating portion 200, the main body 510 is separated from the bottom of the accommodating portion 200, and the first vent 420 and the vent 220 are opened.

[0056] In summary, if Fig. 9 As shown, when the user only installs the battery pack 600 in the right receiving portion 200, the trigger member 500 on the right is pushed to the second working position, the trigger member 500 opens the first vent 420 on the right, the trigger member 500 on the left is still kept in the first working position, the first vent 420 on the left is kept closed, and the cooling fan 300 can drive the airflow to dissipate the heat of the battery pack 600 in the right receiving portion 200; Fig.10 As shown, similarly, when the user only installs the battery pack 600 in the left receiving portion 200, the trigger member 500 on the left is pushed to the second working position, the trigger member 500 opens the first vent 420 on the left, the trigger member 500 on the right is still kept in the first working position, the first vent 420 on the right is kept closed, and the cooling fan 300 can drive the airflow to dissipate the heat of the battery pack 600 in the left receiving portion 200; Fig.11 As shown, when the user installs the battery pack 600 in the left and right receiving parts 200 at the same time, the trigger members 500 on the left and right sides are pushed to the second working position, the first vents 420 on the left and right sides are opened, and the cooling fan 300 can drive the airflow to dissipate the heat of the battery pack 600 in the left and right receiving parts 200.

[0057] The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and the specification only describe the principles of the present application. The present application may have various changes and improvements without departing from the spirit and scope of the present application, and these changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the attached claims and their equivalents.

Claims

1. A charging device, characterized in that: include: A housing, wherein at least two receiving parts are provided on the housing, each of the receiving parts is provided with a charging part, the battery pack is suitable for being detachably mounted in the receiving part and electrically connected to the charging part to obtain electrical energy, and the bottom of the receiving part is also provided with a ventilation hole; A cooling fan, wherein the cooling fan is disposed in the housing; and a heat dissipation pipe fitting, wherein the heat dissipation pipe fitting and the heat dissipation fan are both arranged below the housing portion, the heat dissipation pipe fitting comprises a first ventilation portion extending in a horizontal direction and a second ventilation portion extending in a vertical direction, the top end of the second ventilation portion is connected to the first ventilation portion, at least two first ventilation openings are provided on the top end surface of the first ventilation portion, each of the first ventilation openings is respectively provided corresponding to the bottom of each of the housing portions, the housing portion is connected to the first ventilation portion through the ventilation hole and the first ventilation opening, a second ventilation opening is provided on the bottom end surface of the second ventilation portion, the second ventilation opening is provided corresponding to the heat dissipation fan to connect the heat dissipation fan and the second ventilation portion, and the heat dissipation fan can drive the airflow to dissipate heat to the battery packs in each of the housing portions at the same time; The first ventilation part is also movably provided with a trigger member at each of the first ventilation openings, and an elastic reset member is provided between the trigger member and the first ventilation part. The trigger member includes a main body, an abutting portion cooperating with the battery pack, and a connecting portion connected to the elastic reset member. The abutting portion is arranged on the upper end surface of the main body, and the connecting portion is arranged on the lower end surface of the main body. A clearance hole for the abutting portion to pass through is provided at the bottom of the receiving part. When the battery pack is installed in the receiving part, the battery pack abuts against the abutting portion to push the trigger member from the first working position to the second working position, and the main body opens the first ventilation opening. When the battery pack is separated from the receiving part, the elastic reset member pushes the trigger member from the second working position to the first working position. The main body is attached to the bottom of the receiving part to close the ventilation hole and the first ventilation opening at the same time. The abutting portion extends into the receiving part. Each of the trigger members is suitable for independently opening and closing each of the first ventilation openings, so that the airflow driven by the cooling fan will not be diverted to the receiving part where no battery pack is placed.

2. The charging device according to claim 1, characterized in that: The position of the ventilation hole corresponds to the position of the heat dissipation hole on the bottom of the battery pack, so that when the battery pack is installed in the receiving portion, the ventilation hole and the heat dissipation hole on the bottom of the battery pack do not block each other.

3. The charging device according to claim 1, characterized in that: The main body is in a flat plate shape, and a shape of a horizontal projection of the main body matches a shape of a horizontal projection of the first vent.

4. The charging device according to any one of claims 1 to 3, characterized in that: The shell includes a top wall, a bottom wall arranged opposite to the top wall, and a side wall located between the top wall and the bottom wall. The top wall, the bottom wall and the side walls together enclose a accommodating cavity. The accommodating portion, the heat dissipation pipe and the heat dissipation fan are all arranged in the accommodating cavity. A third vent is opened on at least one of the side walls. The third vent connects the accommodating cavity and the external environment, so that the airflow flowing out of the heat dissipation fan can flow out of the accommodating cavity through the third vent.

5. The charging device according to claim 4, characterized in that: The cooling fan is arranged on the bottom wall, and the cooling fan includes a first air outlet opposite to the second air outlet and a second air outlet opposite to the third air outlet, the air inlet or air outlet direction of the first air outlet is parallel to the vertical direction, and the air inlet or air outlet direction of the second air outlet is parallel to the horizontal direction.

6. The charging device according to claim 4, characterized in that: The receiving portion is arranged in the accommodating cavity in a manner that it does not protrude from the shell, and the opening of the receiving portion is located on the top wall. Slide rails are also arranged on the side walls of the receiving portion to cooperate with the slide rails on the battery pack. The slide rails are arranged to deviate from the central axis of the receiving portion, so that the battery pack can only be installed in the receiving portion in the forward direction.

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