CN203481874U - Charging device - Google Patents

Abstract

The disclosed embodiment of the utility model provides a charging device, which comprises a first chamber, a second chamber, a third chamber and at least one air moving device. The first chamber is provided with a top part and a bottom part, the bottom part is provided with at least one air inlet, and at least one power module used for charging is arranged in the first chamber. The second chamber is provided with a top part, the top part of the second chamber is communicated with the top part of the first chamber through an air passage. The third chamber is arranged between the first chamber and the second chamber, the third chamber is provided with at least one air outlet in the side surfaces, the third chamber is communicated with the second chamber through at least one opening in a first plate used for separating the second chamber and the third chamber, and at least one heat sink is arranged in the third chamber. The at least one air moving device is configured to allow air flow into the first chamber from the air inlet, then flow into the second chamber through the air passage and flow into the third chamber through the opening, and flow out of the third chamber through the air outlet.

Description

charging device

technical field

Embodiments of the present disclosure relate to a charging device, and more particularly, to a charging device for charging a motor vehicle.

Background technique

With the increasing popularity of electric vehicles, ie vehicles with rechargeable batteries as energy source, there is an increasing demand for charging devices for fast charging of on-board rechargeable batteries. The charging device is usually installed outdoors or indoors, so that the motor vehicle that needs to be charged stops and performs fast charging. However, since fast charging tends to generate a high current for a certain period of time, the result is that the charging device will generate correspondingly high heat. In addition, when the charging device is assembled outdoors, it often means that harsh outdoor working conditions may be detrimental to the operation of the charging device. For example, when the charging device is directly exposed to sunlight, the charging device may overheat and cause a safety hazard.

Utility model content

In view of this, one of the objectives of the embodiments of the present disclosure is to provide a charging device with an efficient heat dissipation configuration, which is very beneficial to the safety and reliability of the charging device, especially for a charging device assembled outdoors.

According to an aspect of the embodiments of the present disclosure, there is provided a charging device, which may include: a first chamber having a top and a bottom, the bottom of the first chamber has at least one air inlet, at least one of which is used for charging a power module is placed in the first chamber; a second chamber having a top, wherein the top of the second chamber communicates with the top of the first chamber through an air passage; a third chamber arranged between the first chamber and the second chamber , the third chamber has at least one air outlet on its side, wherein the third chamber communicates with the second chamber via at least one opening on the first plate separating the second and third chambers, at least one heat sink is placed in the third chamber; and at least one air moving device configured such that air enters the first chamber from the air inlet, then the air enters the second chamber via the air channel, and then into the third chamber through the opening and out of the third chamber through the air outlet.

According to the technical solution of this embodiment of the present disclosure, the charging device forms three chambers, so that the airflow sucked in from the air inlet flows more uniformly and stably throughout the charging device, and the cooling efficiency is higher. Arranging the air outlet on the side of the third chamber makes the placement of the entire charging device more flexible, for example, it can be placed against a wall.

In one embodiment, the power module can be directly thermally coupled to the heat sink. Optionally, the power module may be thermally coupled to the heat sink via a second plate. For example, the power module may be placed on one side of the second board and the at least one heat sink formed on the other side of the second board. For example, the heat sink may be formed integrally with the second board, or may be an independent heat sink fixed on the second board by, for example, thermal paste. With this arrangement, the heat dissipated by the power module will be efficiently conducted to the heat sink.

It should be understood that the above-mentioned second board may also be formed by a PCB board, the power module is arranged on one side of the PCB board, and the heat sink is arranged on the other side. The present disclosure does not limit the configuration of the second board.

The second plate is preferably a single layer structure. However, the second plate can also be a multilayer structure filled with highly thermally conductive fillers. As long as heat can be efficiently conducted from the power module to the heat sink, the second plate should not be limited to a specific structure.

In one embodiment, the air outlets may be located on opposite sides of the third chamber. Such an arrangement has the advantage that the airflow entering the third chamber from the second chamber will only need to pass through the shortest path through the heat sink and then exit the charging device, thereby reducing the pressure drop of the airflow in the third chamber To the minimum, improve the overall operation and cooling efficiency.

Preferably, the opening connecting the second chamber and the third chamber is an elongated opening arranged along the flow direction of the airflow in the second chamber, which is arranged substantially along the centerline of the first plate , so that after the airflow enters the third chamber from the second chamber, the distance to the air outlet on the left side is substantially the same as that to the air outlet on the right side.

In one embodiment, the second chamber may taper in the direction of the air flow. The advantage of this arrangement is that the air flow has a relatively uniform flow rate when entering the third chamber, and avoids the flow rate becoming very low due to the pressure drop due to the longer distance in the second chamber. The case where the heat sink at the bottom of the chamber dissipates heat is inefficient.

In one embodiment, the second chamber may be shaped as a triangle or a trapezoid.

In one embodiment, said air outlets are located on opposite sides of said third chamber, said at least one heat sink has a plurality of parallel fins defining a plurality of airflows along opposing air outlets aisle. The advantage of such an arrangement is that the airflow is limited in the third chamber and discharged from the air outlet along the channels formed by the cooling fins, which avoids the turbulence of the airflow in the third chamber and obtains a more stable and direct airflow discharge process.

In one embodiment, the charging device may further include a deflector placed on the heat sink for smoother airflow.

In one embodiment, the charging device may further include a rain shielding member located outside the air outlet for preventing liquid from entering the third chamber.

In one embodiment, the at least one air moving device may be located in the first chamber. Preferably, the power module includes at least two power modules, and the air moving device is placed between the two power modules. Such an arrangement can reduce the noise emitted by the air moving device in the environment.

Preferably, the at least one air moving device may be a cooling blower or fan.

In one embodiment, the charging device may further include a plurality of heat sinks thermally coupled with the second chamber, so as to further enhance the heat dissipation effect. The heat sink thermally coupled with the second chamber may be arranged in the second chamber, or an independent heat sink integrally formed with the second chamber or thermally coupled together through, for example, thermal paste, or arranged in the second chamber. The second chamber is either an independent heat sink integrally formed with the second chamber or thermally coupled together through, for example, thermal paste, or it may be arranged both in the second chamber and outside the second chamber.

In one embodiment, the second plate may be, for example, a heat conduction plate made of metal, which may be integrally formed with the heat sink in the third chamber or with a separate heat sink in the third chamber as described above. The sinks are thermally coupled to each other by, for example, thermal paste.

In one embodiment, the charging device may further include a case covering the first, second and third chambers, wherein the air inlet and the air outlet are exposed from the case.

In one embodiment, wherein the device is a charging device for a motor vehicle.

Description of drawings

Embodiments of the present disclosure will now be described, by way of example only, with reference to the accompanying drawings, in which:

Figure 1 shows a perspective view of the charging device in use;

Fig. 2 shows the bottom view of the charging device shown in Fig. 1;

Fig. 3 shows the cross-sectional view of the charging device along AA' direction among Fig. 2;

Fig. 4 shows the charging device shown in Fig. 1 after removing the second chamber and the third chamber and the air moving device thereon;

Fig. 5 shows the first chamber and the third chamber and the heat sink thereon after removing the second chamber of the charging device shown in Fig. 1;

Fig. 6 shows that the charging device shown in Fig. 5 is installed with the first plate separating the second chamber and the third chamber and the opening thereon;

Figure 7 shows a perspective view of the charging device with arrows indicating the air inlet and air outlet;

Detailed ways

Embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that the same numerals may be used for similar components or functional components in the drawings. The accompanying drawings are only intended to illustrate embodiments of the present disclosure. Those skilled in the art can obtain alternative technical solutions from the following descriptions without departing from the spirit and protection scope of the present disclosure.

The embodiments of the present disclosure mainly relate to a charging device, especially a charging device for charging an electric vehicle. However, it should be understood that the present disclosure is not limited to a charging device that is only used to charge motor vehicles, and any charging device structure defined by the spirit and scope of the appended claims of the present disclosure should be considered as belonging to the charging device of the present disclosure. .

Figure 1 shows the charging device 10 in a conventional orientation when in use; Figure 2 shows a bottom view of the charging device shown in Figure 1, showing the air inlet and the power module inside; Sectional view of the charging device in direction AA' in 2, with schematic arrows indicating the air flow path in the charging device.

According to an embodiment of the present disclosure, as shown in FIGS. 1-3 , a charging device for charging an on-board battery of an electric vehicle is generally positioned vertically after assembly, and has an air inlet 25 opening downward and at least one opening opening to the side. An air outlet 42 . Air is sucked into the charging device 10 from the air inlet, flows through the first chamber 20 , the second chamber 30 and the third chamber 40 and then is discharged from the air outlet 42 .

In one embodiment, the first chamber 20 has a top 23 and a bottom 24 , wherein the air inlet 25 is arranged at the bottom 24 . As shown in FIG. 2, in this embodiment, the air inlet 25 is a rectangular opening, but it should be understood that the air inlet 25 can also have other shapes or multiple different shapes, such as multiple circles or multiple elongated openings. strips, etc., as long as the air inlet 25 has a sufficient total area to allow air to enter the first chamber 20 smoothly. At least one power module 21 for charging is also accommodated in the first chamber 20 .

In one embodiment, as shown in FIG. 3 , the second chamber 30 has a top 31 , wherein the top 31 of the second chamber 30 communicates with the top 23 of the first chamber 20 through the air channel 22 . Similarly, it should be understood that the air channel 22 can have different configurations, for example, as shown in FIG. A plurality of tubular members connecting the first chamber 20 and the second chamber 30 as long as the air channel 22 has a sufficient total cross-sectional area can allow air to enter the second chamber 30 smoothly.

In one embodiment, the third chamber 40 is arranged between the first chamber 20 and the second chamber 30 , and the air outlet 42 is arranged at a side of the third chamber 40 . The third chamber 40 communicates with the second chamber 30 through at least one opening 32 on the first plate 33 for separating the second chamber 30 and the third chamber 40 . Similarly, it should be understood that the opening 32 may have different configurations. For example, as shown in FIG. The elongated opening is a plurality of small rectangular openings, however it can also be configured in other shapes as long as the opening 32 has a sufficient total cross-sectional area to allow air to enter the second chamber 30 unimpeded. Preferably, as shown in FIG. 6 , the opening 32 is an elongated opening arranged along the flow direction of the airflow in the second chamber 30 , which is arranged substantially along the vertical centerline of the first plate 33 .

In one embodiment, the air outlets 42 are arranged on opposite left and right sides of the third chamber 40 . An elongated opening 32 arranged along the vertical centerline of the first plate 33 as previously described would be suitable because such an arrangement allows the air after entering the third chamber 40 to reach the air outlet on the left and to the air outlet on the right. The distance of the air outlet is basically the same. A specific description of this arrangement will be described later.

In one embodiment, the charging device 10 has at least one air moving device 27, which can make air flow into the first chamber 20 from the air inlet 25, then flow into the second chamber 30 through the air channel 22, and then flow into the second chamber 30 through the opening 32. into the third chamber 40 and out of the third chamber 40 through the air outlet 42 .

According to this embodiment of the present disclosure, by making the charging device have three divided chambers, air is allowed to move more uniformly and stably within the charging device, and cooling efficiency is higher. Arranging the air outlet on the side of the third chamber makes the placement of the entire charging device more flexible, for example, it can be placed against a wall.

According to an embodiment of the present disclosure, the power module 21 may be directly thermally coupled with the heat sink 41 . Alternatively, as shown in FIG. 3 , the power module 21 may be thermally coupled to the heat sink 41 via the second plate 26 . For example, the power module 21 may be placed on one side of the second board 21 and the heat sink 41 formed on the other side of the second board 26 . With this arrangement, the heat dissipated by the power module will be efficiently conducted to the heat sink.

It should be understood that the heat sink 41 can be integrally formed with the second board 26, or can be an independent heat sink 41 fixed on the second board 26 by, for example, thermal paste, as long as it is ensured that air cannot directly enter from the first chamber 20 The third chamber 40 is suitable. However, the present disclosure does not limit the manner in which the second plate 26 and the heat sink 41 are thermally coupled, nor does it limit the configuration of the second plate 26 . For example, the second board 26 may be formed by a PCB board, a power module is arranged on one side of the PCB board, and a heat sink is arranged on the other side. For another example, the second board 26 may be a board made of a single layer of heat-conducting material, or a board made of a multi-layer heat-conducting material with a heat-conducting filling material therein, as long as the heat can be effectively conducted from the power module to the heat sink .

According to one embodiment of the present disclosure, the air outlets 42 are located on opposite sides of the third chamber 40 as described above. Such an arrangement has the following advantages, the airflow entering the third chamber 40 from the second chamber 30 will only need to pass through the shortest path, go through the heat sinks 41 arranged on the left and right sides respectively to the left and right sides, and then discharge the charging device 10, so that the airflow The pressure drop in the third chamber 40 is minimized, improving the overall operating and cooling efficiency.

According to one embodiment of the present disclosure, as shown in FIGS. 1 , 7 and 8 , the second chamber 30 is tapered in the direction of air flow. Preferably, the second chamber 30 is configured in a triangular or trapezoidal shape with a larger cross-sectional area at the top 31 of the second chamber 30 . Constructing the second chamber 30 into a tapered shape allows the gas flow to have a relatively consistent flow rate as it enters the third chamber 40, while avoiding a very low flow rate due to pressure drop as it travels a longer distance in the second chamber 30. As a result, the thermal efficiency of the heat sink 41 at the bottom of the third chamber 40 is low.

According to one embodiment of the present disclosure, the air moving device 27 may be a cooling blower or a fan. As shown in FIGS. 3 and 4 , the air moving device 27 includes a plurality of fans located in the first chamber 20 . In particular, as shown in FIG. 3 , the first chamber 20 of the charging device 10 includes at least two power modules 21 , so that a plurality of fans located in the first chamber 20 are placed between the at least two power modules 21 . This arrangement makes the noise from the air moving device 27 less audible in the environment. Therefore, a plurality of smaller fans which are inherently relatively noisy can be used, thereby further reducing the cost.

According to one embodiment of the present disclosure, as shown in FIG. 5 , the heat sink 41 is configured as a plurality of fins 41a parallel to each other, defining a plurality of airflow channels along opposite air outlets. The cooling fins 41 a preferably have a length that passes through the second chamber 30 so as to maximize the use of space to achieve efficient heat dissipation. Arranging the cooling fins 41a in such a way that the airflow is limited in the third chamber 40 and discharged from the air outlet 42 along the channels formed by the cooling fins 41a, which avoids the formation of turbulent flow in the third chamber 40 to obtain a more stable and direct flow. air discharge process.

Intake and exhaust of charging device 10 as a whole are indicated by arrows in FIG. 7 .

For the purpose of saving space, according to another embodiment of the present disclosure, some components such as a transformer may also be fastened in the third chamber 40 in a manner of being thermally coupled with the second plate 26 . Such an arrangement enables the heat dissipated by these components to be effectively conducted to the heat sink 41 to be dissipated by the airflow.

According to another embodiment of the present disclosure, the charging device 10 may further include a plurality of heat sinks (not shown) thermally coupled with the second chamber 30 , so as to further enhance the heat dissipation effect. The heat sink thermally coupled with the second chamber 30 can be arranged in the second chamber 30, or an independent heat sink integrally formed with the second chamber 30 or thermally coupled together through, for example, thermal paste, or arranged in the second chamber 30. Outside the second chamber 30 , or an independent heat sink integrally formed with the second chamber 30 or thermally coupled together through, for example, thermal paste, or arranged both inside and outside the second chamber 30 .

According to another embodiment of the present disclosure, the charging device 10 may further include a housing (not shown) for covering the first, second and third chambers 20, 30, 40, wherein the air inlet 25 and the air outlet 42 are connected from The casing is exposed.

According to another embodiment of the present disclosure, the charging device 10 further includes a deflector (not shown) placed on the heat sink 41a to make the air flow in and out more smoothly. According to another embodiment of the present disclosure, the charging device 10 further includes a rain shielding member (not shown) located outside the air outlet 42, the rain shielding member is used to prevent liquid such as rainwater from entering the third chamber, so that the charging device 10 better fitted for outdoor use.

Many modifications and other implementations of the disclosure presented herein will come to mind to one skilled in the art to which this disclosure pertains from the teachings presented in the foregoing descriptions and the associated drawings. Therefore, it is to be understood that the embodiments of the present disclosure are not to be limited to the particular embodiments disclosed and that modifications and other embodiments are intended to be included within the scope of the present disclosure. Additionally, while the above description and associated drawings describe example embodiments in the context of certain example combinations of components and/or functions, it should be appreciated that components and/or functions may be provided by alternative embodiments. Different combinations of functions can be made without departing from the scope of the present disclosure. In this regard, for example, other combinations of components and/or functions than those expressly described above are also contemplated to be within the scope of the present disclosure. Although specific terms are employed herein, they are used in a generic and descriptive sense only and are not intended to be limiting.

Claims (15)

1. A charging device (10), comprising: A first chamber (20) having a top (23) and a bottom (24), the bottom (24) of said first chamber (20) having at least one air inlet (25), wherein at least one power module for charging ( 21) being placed in said first chamber (20); a second chamber (30) having a top (31), the top (31) of the second chamber (30) communicating with the top (23) of the first chamber (20) through an air channel (22); a third chamber (40) arranged between said first chamber (20) and said second chamber (30), said third chamber (40) having at least one air outlet (42) on its side, Wherein the third chamber (40) is connected to the second chamber ( 30) communicating, at least one heat sink (41) is placed in said third chamber (40); and at least one air moving device (27) arranged such that air enters said first chamber (20) from said air inlet (25) and then enters said second chamber via said air channel (22) (30), then enter the third chamber (40) through the opening (32), and flow out of the third chamber (40) through the air outlet (42). 2. The charging device according to claim 1, wherein the power module (21) is thermally coupled with the heat sink (41) directly or via a second plate (26). 3. The charging device according to claim 2, wherein the air outlets (42) are located on opposite sides of the third chamber (40). 4. The charging device according to any one of claims 1 to 3, wherein the second chamber (30) tapers in the direction of the air flow. 5. The charging device according to claim 4, wherein the second chamber (30) is shaped as a triangle or a trapezoid. 6. The charging device according to claim 4, wherein the air outlet (42) is located on opposite sides of the third chamber (40), and the at least one heat sink (41) has a plurality of parallel cooling fins (41a), said cooling fins (41a) defining a plurality of airflow channels along opposing air outlets. 7. The charging device according to claim 6, further comprising a deflector placed on the heat sink (41a) to make the air flow more smooth. 8. The charging device according to claim 4, further comprising a rain shielding member located outside the air outlet (42) for preventing liquid from entering the third chamber (40). 9. The charging device according to any one of claims 1 to 3, wherein said at least one air moving device (27) is located in said first chamber (20). 10. The charging device according to claim 9, wherein the power module (21) comprises at least two power modules, and the air moving device (27) is placed between the at least two power modules. 11. The charging device according to any one of claims 1 to 3, wherein the at least one air moving device (27) is a cooling blower or a fan. 12. The charging device according to any one of claims 1 to 3, further comprising a plurality of heat sinks thermally coupled with the second chamber (30). 13. The charging device according to claim 4, wherein said at least one air moving device (27) is located in said first chamber (20), said power module (21) comprises at least two power modules, said An air moving device (27) is placed between the at least two power modules. 14. The charging device according to any one of claims 1 to 3, further comprising a casing for covering the first chamber (20), the second chamber (30) and the third chamber (40), wherein The air inlet (25) and the air outlet (42) are exposed from the housing. 15. The charging device according to any one of claims 1 to 3, wherein the charging device (10) is a charging device for a motor vehicle.

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