Heat dissipation structure and vehicle-mounted power supply

Abstract

The present invention discloses a heat dissipation structure and a vehicle-mounted power supply. The heat dissipation structure includes a bottom plate and at least one side plate. The side plate includes a water channel. An opening is formed on the bottom plate, and a power device is provided on the side plate. The heat dissipation structure further includes a mounting plate. The mounting plate is provided with a water tank. The bottom plate is welded to the mounting plate. The water tank is provided with a water inlet pipe and a water outlet pipe. The opening is communicated with the water inlet pipe and the water outlet pipe. The water tank includes a first tank body and a second tank body. The second tank body includes a connection end and a water diversion end communicated with the water inlet pipe and the water outlet pipe. Compared with the prior art, in the heat dissipation structure of the present invention, a plurality of side plates are vertically arranged on the bottom plate, and the power device is arranged on the side plate. By providing circulating cooling water for the water channels in the side plates, the heat generated by the power device is taken away, thereby greatly improving the heat dissipation performance of the vehicle-mounted power supply.

Description

Technical Field

[0001] The present invention relates to the field of heat dissipation of electric vehicle chargers, and particularly to a heat dissipation structure and an in-vehicle power supply. Background Art

[0002] An in-vehicle power supply, also known as a Power Converter, is a power conversion device used in automobiles. Such a power conversion device includes several power devices for converting an external power supply into AC / DC power supplies of various voltage levels used in automobiles. In an in-vehicle power supply, when these power devices are in operation, a large amount of heat is generated. Therefore, effective heat dissipation design must be adopted to dissipate the heat generated by the power devices to avoid affecting the overall operating performance due to heat accumulation. However, with the increase in power, in-vehicle power supplies generally need to use multiple PCB boards to meet functional requirements, and each PCB board is provided with a large number of power devices. These power devices generate a large amount of heat during operation, and traditional heat dissipation structures can no longer meet the heat dissipation requirements of the devices. Therefore, there is an urgent need to design a new heat dissipation structure to meet the heat dissipation requirements of in-vehicle power supplies. Summary of the Invention

[0003] The present invention provides a heat dissipation structure and an in-vehicle power supply, which solve the technical problem of poor heat dissipation performance of in-vehicle power supplies in the prior art.

[0004] The technical solution adopted by the present invention is: a mounting plate, a water tank is opened on the mounting plate, and the water tank is provided with an inlet pipe and an outlet pipe; a bottom plate covering the water tank; at least one side plate vertically arranged on one side of the bottom plate relative to the water tank, the side plate includes a hollow water channel, and an opening communicating with the water channel and the water tank is opened on the bottom plate, and a plurality of power devices are attached to the side plate.

[0005] Further, the heat dissipation structure further includes a mounting plate, a water tank is opened on the mounting plate, the bottom plate covers the water tank on the mounting plate, and the water tank is provided with an inlet pipe and an outlet pipe.

[0006] Further, the bottom plate and the mounting plate are fixedly welded.

[0007] Further, the heat dissipation structure includes a rectangular housing, and the mounting plate is arranged inside the rectangular housing.

[0008] Further, the water tank includes a first tank body and a second tank body, the second tank body includes a connection end connected to the second tank body and a water diversion end away from the connection end, and the space of the second tank body increases from the connection end to the water diversion end, and the inlet pipe and the outlet pipe pass through the housing and communicate with the water diversion end.

[0009] Further, three side plates are provided on the bottom plate, the water channels of the side plates are communicated with the first tank body, and the water channels of the three side plates are communicated with each other.

[0010] Further, a water tank is provided on each side of the mounting plate.

[0011] Further, the two water tanks are communicated with the same water inlet pipe and water outlet pipe.

[0012] Further, the bottom plate and the side plates are formed by die casting.

[0013] A vehicle-mounted power supply includes the heat dissipation structure described above.

[0014] Compared with the prior art, in the heat dissipation structure of the present invention, a plurality of side plates are vertically arranged on the bottom plate, and the power devices are arranged on the side plates. By providing circulating cooling water in the water channels of the side plates to take away the heat generated by the power devices, the heat dissipation performance of the vehicle-mounted power supply is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0016] Figure 1 It is a schematic structural diagram of the heat dissipation structure in one direction in an embodiment of the present invention;

[0017] Figure 2 It is a schematic structural diagram of the heat dissipation structure in another direction in an embodiment of the present invention;

[0018] Figure 3 It is a schematic diagram of the heat dissipation structure in another embodiment of the present invention;

[0019] Figure 4 It is a schematic diagram of the installation structure of an embodiment of the heat dissipation structure in the present invention;

[0020] Figure 5 It is a schematic sectional structural diagram of the heat dissipation structure in the present invention;

[0021] Figure 6 It is a schematic diagram of the installation structure of another embodiment of the heat dissipation structure in the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0022] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clear and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0023] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0024] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0025] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0026] The principle and structure of the present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0027] As Figure 1 、 2 shown, a heat dissipation structure is disclosed in the present application. Its structure mainly includes a bottom plate 1, at least one side plate 2 is vertically arranged on the bottom plate 1, and a plurality of power devices 3 (electronic components) are attached to each side plate 2. The side plate 2 is hollow, and a water channel 21 is formed inside the hollow. An opening is provided at the connection between the bottom plate 1 and the side plate 2, and the opening communicates with the water channel 21. The opening is connected to the water inlet pipe and the water outlet pipe to provide circulating cooling water for the water channel 21 to dissipate heat for the power devices.

[0028] Further, in one embodiment, the bottom plate 1 is arranged as a rectangle, and three side plates 2 are arranged on one bottom plate 1. These three side plates 2 are arranged along the edge of the same side of the bottom plate 1, and the three side plates 2 are connected to each other pairwise, that is, the water channels 21 of the three side plates 2 are interconnected. The three side plates 2 roughly enclose a "concave" shape, and the power devices 3 on each side plate 2 are arranged towards the outside of the "concave" shape, so as to disperse the heat as much as possible.

[0029] As Figure 3 shown, in other embodiments, the number of side plates 2 on the bottom plate 1 can also be only one.

[0030] Further, as Figure 4 、 5 shown, the heat dissipation structure further includes a mounting plate 4, and the mounting plate 4 is used to mount the bottom plate 1 and the side plates 2; wherein, a water tank 41 is opened on the plate surface of the mounting plate 4, the bottom plate 1 is covered on the water tank 41 and fixed, and one side of the water tank 41 located at the opening is connected to the water inlet pipe 5 and the water outlet pipe 6 to form a circulating water path, and the water inlet pipe 5 can also be used as a water outlet, and the water outlet pipe 6 can also be used as a water inlet.

[0031] Further, the mounting plate 4 is installed in a housing 7, and the housing 7 is a hollow box body. The mounting plate 4 is horizontally erected in the middle of the housing 7. The water tank 41 includes two parts, namely a first tank body 411 and a second tank body 412. The bottom surface of the first tank body 411 is also horizontal, that is, the bottom surface of the first tank body 411 is parallel to the opening of the water tank 41; the second tank body 412 includes a connecting end 4121 and a water guiding end 4122. The connecting end 4121 is fixedly connected to the first tank body 411, and the water guiding end 4122 is arranged opposite to the connecting end 4121 and is located at one end of the second tank body 412 relative to the connecting end 4121.

[0032] The space of the second tank body 412 increases from the connecting end 4121 to the water guiding end 4122. The water inlet pipe 5 and the water outlet pipe 6 pass through the housing 7 and are connected to the water guiding end 4122, so that the water in the water inlet pipe 5 can have a decreasing space when flowing into the first tank body 411, increasing the increasing pressure of the water flow. The water channel 21 of the side plate 2 is connected to the first tank body 411, so that the cooling water can quickly flow into the water channel to take away the heat generated by the power device 3.

[0033] Preferably, the edge of the opening of the water tank 41 in this embodiment is provided with a support groove adapted to the contour of the bottom plate 1. The bottom plate 1 is installed on the support groove so that the water channel 21 is connected to the first tank body 411, and the bottom plate 1 and the side wall of the water tank 41 are welded by friction welding.

[0034] Further, as Figure 6As shown in the figure, on both sides of the mounting plate 4 in the present application, there is a water tank 41 respectively. Each water tank 41 is adapted to the bottom plate 1. The bottom plate 1 and the side plate 2 are installed on both sides of the mounting plate 4 respectively, so that more power devices 3 can be installed to meet the use of the vehicle-mounted power supply. Moreover, the second tank bodies 412 of the two water tanks 41 are correspondingly arranged on the same side of the housing 7, and the second tank bodies 412 of the two water tanks 41 are both connected to the same water inlet pipe 5 and the water outlet pipe 6, so as to meet the heat dissipation of all the power devices 3.

[0035] Preferably, in this embodiment, the bottom plate 1 and the side plate 2 are designed by integral die-casting.

[0036] The present application also proposes a vehicle-mounted power supply, and the vehicle-mounted power supply includes the heat dissipation structure proposed in the present application.

[0037] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A heat dissipation structure, characterized in that, Comprising: A mounting plate, on which a water tank is provided, and the water tank is provided with a water inlet pipe and a water outlet pipe; A bottom plate covering the water tank; At least one side plate vertically arranged on the side of the bottom plate opposite to the water tank, the side plate includes a hollow water channel, an opening communicating with the water channel and the water tank is provided on the bottom plate, and a plurality of power devices are attached to the side plate; The mounting plate is horizontally mounted in the middle of the housing, and the water tank, the bottom plate and the side plate are respectively provided on the opposite sides of the mounting plate; each water tank includes a first tank body and a second tank body, the first tank body communicates with the opening of the corresponding bottom plate, the second tank body includes a connection end connected to the first tank body and a water diversion end far from the connection end, the space of the second tank body increases from the connection end to the water diversion end, the water inlet pipe and the water outlet pipe pass through the housing and communicate with the water diversion end, and the second tank bodies of the two water tanks are connected to the same water inlet pipe and water outlet pipe.

2. The heat dissipation structure according to claim 1, characterized in that, The bottom plate is fixedly welded to the mounting plate.

3. The heat dissipation structure according to claim 1, characterized in that, The housing is set to be rectangular, and the mounting plate is arranged inside the housing.

4. The heat dissipation structure according to claim 3, characterized in that, Three side plates are provided on the bottom plate, the water channels of the side plates communicate with the first tank body, and the water channels of the three side plates communicate with each other.

5. The heat dissipation structure according to claim 1, characterized in that, The bottom plate and the side plate are die-cast.

6. A vehicle-mounted power supply, characterized in that, Comprising the heat dissipation structure according to any one of claims 1 to 5.

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