Power converter

Abstract

The utility model belongs to the technical field of electronic equipment, and discloses a power converter which comprises a shell, a capacitor assembly, a power module and a heat dissipation assembly. The capacitor assembly is detachably connected to the shell, the power module is detachably connected to the side, away from the shell, of the capacitor assembly, and at least one part of the heat dissipation assembly is clamped between the capacitor assembly and the power module. The heat dissipation assembly in the power converter can be flexibly disassembled and can be conveniently changed or replaced according to needs, the universality is high, and the cost can be saved.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic equipment, in particular to a power converter. Background Art

[0002] A power converter is a device that can convert one DC voltage value into another DC voltage value. A power converter generally includes a housing, a heat sink, a thin film capacitor and a power module that are arranged in a flat form in the housing. Among them, the thin film capacitor uses metal foil as an electrode, which is overlapped with plastic films such as polyethylene, polypropylene, polystyrene or polycarbonate from both ends and then wound into a cylindrical capacitor. The power module is a semiconductor switching device, which is an efficient and fast switching module that can be used in a variety of electronic devices. The heat sink is a structure that dissipates heat for the power module and other heat-generating components in the power converter. The above-mentioned heat sink is generally a heat dissipation water channel for the flow of coolant.

[0003] At present, the heat dissipation channels in the prior art are integrally formed or fixedly connected to the housing and cannot be flexibly disassembled. When it is necessary to increase or decrease the internal components of the housing and adjust the arrangement and number of the heat dissipation channels according to actual needs, the power converter can only be directly replaced, which has poor flexibility and versatility and is not conducive to reducing costs. In addition, the thin film capacitors and power modules and other components arranged in the housing in a flat manner will reduce the integration, thereby causing the problem of the overall volume of the power converter being too large.

[0004] Therefore, a power converter is urgently needed to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a power converter, in which the heat dissipation component can be flexibly disassembled, conveniently changed or replaced according to needs, has strong versatility, and is conducive to cost saving.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] Power converter, comprising:

[0008] A shell, a capacitor assembly, a power module and a heat dissipation assembly, wherein the capacitor assembly is detachably connected to the shell, the power module is detachably connected to a side of the capacitor assembly facing away from the shell, and at least a portion of the heat dissipation assembly is sandwiched between the capacitor assembly and the power module.

[0009] As a preferred solution of the power converter provided by the utility model, the housing is provided with a liquid inlet and a liquid outlet;

[0010] The heat dissipation assembly includes a liquid cooling part, the liquid cooling part is hollow inside to form a liquid cooling cavity, the liquid cooling cavity is connected to the liquid inlet and the liquid outlet, the liquid cooling part is sandwiched between the capacitor assembly and the power module, and is detachably connected to the capacitor assembly;

[0011] The cooling liquid can enter the liquid cooling chamber through the liquid inlet and flow out of the liquid cooling chamber from the liquid outlet.

[0012] As a preferred solution of the power converter provided by the utility model, the heat dissipation assembly also includes a liquid inlet and a liquid outlet, the liquid inlet and the liquid outlet are respectively connected to the liquid cooling part and connected to the liquid cooling chamber, the liquid inlet is docked and connected to the liquid inlet, and the liquid outlet is docked and connected to the liquid outlet.

[0013] As a preferred solution of the power converter provided by the utility model, the liquid inlet and the liquid outlet are respectively arranged on two opposite sides of the liquid cooling part, and the capacitor assembly is located between the liquid inlet and the liquid outlet.

[0014] As a preferred solution of the power converter provided by the utility model, the capacitor assembly is recessed with a first accommodating groove and a second accommodating groove, and the liquid inlet portion and the liquid outlet portion are respectively embedded in the first accommodating groove and the second accommodating groove.

[0015] As a preferred solution of the power converter provided by the utility model, the liquid inlet portion is detachably connected to the liquid inlet; the liquid outlet portion is detachably connected to the liquid outlet.

[0016] As a preferred solution of the power converter provided by the utility model, the power converter further comprises a sealing member, and the sealing member is respectively sandwiched between the liquid inlet and the liquid inlet, and between the liquid outlet and the liquid outlet.

[0017] As a preferred solution of the power converter provided by the utility model, the capacitor component is provided with a recessed mounting groove, and at least a part of the heat dissipation component is accommodated in the mounting groove.

[0018] As a preferred solution of the power converter provided by the utility model, the inner wall of the liquid cooling chamber is provided with a plurality of heat dissipation ribs.

[0019] As a preferred solution of the power converter provided by the utility model, the power module includes a module body and connecting parts arranged on opposite sides of the module body, the module body is arranged opposite to the heat dissipation component, and the connecting parts are detachably connected to the capacitor component.

[0020] Beneficial effects of the utility model:

[0021] The power converter provided by the utility model includes a housing, a capacitor assembly, a power module and a heat dissipation assembly. The capacitor assembly is detachably connected to the housing, the power module is detachably connected to the side of the capacitor assembly away from the housing, and at least a part of the heat dissipation assembly is sandwiched between the capacitor assembly and the power module. In other words, by arranging a part of the heat dissipation assembly between the capacitor assembly and the power module, the heat dissipation requirements of the capacitor assembly and the power module can be met, and the flexible disassembly of the heat dissipation assembly can be achieved, which is convenient for changing or replacing the heat dissipation assembly in the power converter as needed, effectively improving versatility, and helping to save costs. And the above-mentioned capacitor assembly, power module and heat dissipation assembly are stacked, which can effectively improve the integration of the power converter and reduce the overall volume of the power converter compared to the various components arranged in the housing in a flat form in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The structure of the power converter provided by the embodiment of the utility model is shown in FIG. Figure 1 ;

[0023] Figure 2 It is an exploded schematic diagram of a power converter provided by an embodiment of the utility model;

[0024] Figure 3 It is a schematic diagram of the assembly of the housing and the sealing ring provided in the embodiment of the utility model;

[0025] Figure 4 It is a schematic diagram of the assembly of the housing and the capacitor assembly provided by the embodiment of the utility model;

[0026] Figure 5 It is a schematic diagram of the assembly of the housing, capacitor assembly and heat dissipation assembly provided in the embodiment of the utility model;

[0027] Figure 6 It is a structural schematic diagram of a heat dissipation assembly provided by an embodiment of the utility model;

[0028] Figure 7 is a schematic diagram of a cover provided by an embodiment of the utility model;

[0029] Figure 8 The structure of the power converter provided by the embodiment of the utility model is shown in FIG. Figure 2 .

[0030] In the figure:

[0031] 100, housing; 110, liquid inlet; 120, liquid outlet;

[0032] 200, capacitor assembly; 210, first receiving slot; 220, second receiving slot; 230, mounting slot; 240, connecting ear plate; 250, first mounting bolt;

[0033] 300, power module; 310, module body; 320, connection part; 330, second mounting bolt;

[0034] 400, heat dissipation assembly; 410, liquid cooling unit; 411, base; 412, cover; 413, heat dissipation ribs; 420, liquid inlet; 421, first connecting piece; 430, liquid outlet; 431, second connecting piece; 440, third mounting bolt;

[0035] 500. Seals. DETAILED DESCRIPTION

[0036] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0037] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" 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 a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0039] In the description of this embodiment, the terms "upper", "lower", "right", "left" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0040] Figure 1 The structure of the power converter provided by the embodiment of the utility model is shown as follows Figure 1 ; Figure 2 The exploded schematic diagram of the power converter provided by the embodiment of the utility model is shown. Figure 1 and Figure 2 , this embodiment provides a power converter. The power converter includes a housing 100, a capacitor assembly 200, a power module 300 and a heat dissipation assembly 400. The capacitor assembly 200 is detachably connected to the housing 100, the power module 300 is detachably connected to a side of the capacitor assembly 200 away from the housing 100, a portion of the heat dissipation assembly 400 is sandwiched between the capacitor assembly 200 and the power module 300, and another portion of the heat dissipation assembly 400 is detachably connected to the housing 100.

[0041] It should be noted that by arranging a part of the heat dissipation assembly 400 between the capacitor assembly 200 and the power module 300, the heat dissipation requirements of the capacitor assembly 200 and the power module 300 can be met; and by detachably connecting another part of the heat dissipation assembly 400 to the housing 100, the heat dissipation assembly 400 can be flexibly disassembled, which is convenient for changing or replacing the heat dissipation assembly 400 in the power converter as needed, effectively improving versatility and helping to save costs. Moreover, the stacked arrangement of the capacitor assembly 200, the power module 300 and the heat dissipation assembly 400 can effectively improve the integration of the power converter and reduce the overall volume of the power converter, compared with the components arranged in a flat form in the housing of the power converter in the prior art.

[0042] Figure 3 A schematic diagram showing the assembly of a housing and a sealing ring provided in an embodiment of the utility model is shown; Figure 4 The schematic diagram of the assembly of the housing and capacitor assembly provided by the embodiment of the utility model is shown. Figure 1-Figure 4 The capacitor assembly 200 is a rectangular parallelepiped structure, and a plurality of connecting ear plates 240 are evenly spaced on its circumferential side. A plurality of connecting columns are arranged in an array on the housing 100, and the connecting columns correspond to the connecting ear plates 240 one by one, and the tops of the connecting ear plates 240 and the connecting columns are respectively provided with connecting holes, and the connecting ear plates 240 and the connecting columns are fastened and connected by first mounting bolts 250 to achieve a detachable connection between the capacitor assembly 200 and the housing 100. Through the above arrangement, it is possible to ensure a reliable connection between the capacitor assembly 200 and the housing 100, and to improve flexibility. In the present embodiment, the capacitor assembly 200 can specifically be a thin film capacitor in the prior art.

[0043] Figure 5The schematic diagram of the assembly of the housing, capacitor assembly and heat dissipation assembly provided by the embodiment of the utility model is shown. Figure 1 , Figure 2 and Figure 5 In this embodiment, the heat dissipation assembly 400 is specifically a liquid cooling device. The heat dissipation assembly 400 includes a liquid cooling portion 410, a liquid inlet portion 420, and a liquid outlet portion 430. The liquid cooling portion 410 is sandwiched between the capacitor assembly 200 and the power module 300, and is detachably connected to the capacitor assembly 200. The liquid cooling portion 410 is hollow inside to form a liquid cooling cavity, and the liquid cooling cavity can accommodate a coolant.

[0044] Specifically, the housing 100 is provided with a liquid inlet 110 and a liquid outlet 120, the liquid inlet 110 can be connected to a cooling liquid source, and the liquid outlet 120 can be connected to a cooling liquid recovery device. The liquid inlet portion 420 is docked and connected to the liquid inlet 110, and the liquid outlet portion 430 is docked and connected to the liquid outlet 120. In this embodiment, the housing 100 is provided with an inlet pipe and an outlet pipe, the liquid inlet 110 is formed at the end of the inlet pipe, and the liquid outlet 120 is formed at the end of the outlet pipe. The cooling liquid can enter the liquid cooling cavity through the inlet pipe and the liquid inlet 110, and flow out of the liquid cooling cavity from the liquid outlet 120 and the outlet pipe to realize the circulation of the cooling liquid and improve the heat dissipation effect.

[0045] Specifically, the liquid inlet 420 is a tubular structure, and a plurality of first connectors 421 are evenly arranged on the peripheral side away from the inlet of the liquid cooling part 410, and the first connectors 421 are ear plate structures with through holes. The liquid inlet 110 is provided with a plurality of screw holes corresponding to the positions of the plurality of first connectors 421, and the first connectors 421 and the liquid inlet 110 can be detachably connected by the third mounting bolts 440, and the connection reliability between the liquid inlet 420 and the liquid inlet 110 can be improved by bolt connection, thereby reducing the risk of liquid leakage and improving the reliability of the power converter.

[0046] Similarly, the liquid outlet 430 is specifically a tubular structure, and a plurality of second connectors 431 are evenly arranged on the peripheral side away from the outlet of the liquid cooling part 410, and the second connectors 431 are specifically an ear plate structure with through holes. The liquid outlet 120 is provided with a plurality of screw holes corresponding to the positions of the plurality of second connectors 431, and the second connectors 431 and the liquid outlet 120 can be detachably connected by the third mounting bolts 440, and the connection reliability between the liquid outlet 430 and the liquid outlet 120 can be improved by bolt connection, thereby reducing the risk of liquid leakage and improving the reliability of the power converter.

[0047] More specifically, the power converter further includes a seal 500. The seal 500 is respectively sandwiched between the liquid inlet 420 and the liquid inlet 110, and between the liquid outlet 430 and the liquid outlet 120. The seal 500 can be specifically a rubber seal ring, which can block the gap between the liquid outlet 430 and the liquid outlet 120 and the gap between the liquid inlet 420 and the liquid inlet 110 to prevent the problem of coolant leakage.

[0048] Figure 6 The schematic diagram of the structure of the heat dissipation assembly provided by the embodiment of the utility model is shown. Figure 5 and Figure 6 The liquid inlet 420 and the liquid outlet 430 are respectively arranged on opposite sides of the liquid cooling part 410 and matched with the capacitor assembly 200 of the rectangular parallelepiped structure, and the liquid inlet 420 and the liquid outlet 430 are respectively perpendicular to the liquid cooling part 410. The capacitor assembly 200 is located between the liquid inlet 420 and the liquid outlet 430, and in order to improve the assembly stability, the opposite sides of the liquid inlet 420 and the liquid outlet 430 are respectively pressed against the opposite sides of the capacitor assembly 200 to clamp the capacitor assembly 200.

[0049] Specifically, refer to Figure 4 and Figure 6 , a mounting groove 230 is recessed on the top of the capacitor assembly 200. The liquid cooling unit 410 includes a base 411 and a cover 412, the base 411 can be embedded in the mounting groove 230, and the cover 412 is covered at the opening of the base 411 to form the liquid cooling cavity. Through the above arrangement, the overall height of the capacitor assembly 200 and the liquid cooling unit 410 can be reduced in the vertical direction, the compactness of the structure can be improved, and the contact area between the liquid cooling unit 410 and the capacitor assembly 200 can be increased, thereby ensuring the heat dissipation effect of the capacitor assembly 200.

[0050] Specifically, the capacitor assembly 200 has a first receiving groove 210 and a second receiving groove 220 on opposite sides in the width direction, and the liquid inlet 420 and the liquid outlet 430 can be respectively embedded in the first receiving groove 210 and the second receiving groove 220. Through the above arrangement, the compactness of the structure of the capacitor assembly 200, the liquid inlet 420 and the liquid outlet 430 can be improved in the width direction, and the size of the power converter in the width direction can be reduced; at the same time, the above arrangement can increase the contact area between the liquid inlet 420 and the liquid outlet 430 and the capacitor assembly 200, and improve the heat dissipation effect of the capacitor assembly 200.

[0051] Figure 7 The schematic diagram of the cover provided by the embodiment of the utility model is shown. Figure 7The inner wall of the liquid cooling chamber is provided with a plurality of heat dissipation ribs 413. In the present embodiment, the heat dissipation ribs 413 are specifically provided on the side of the cover 412 facing the base 411. The plurality of heat dissipation ribs 413 can be provided in parallel and at intervals with each other, and integrally formed on the cover 412, so as to increase the contact area between the cover 412 and the coolant in the liquid cooling chamber, thereby improving the heat dissipation effect of the coolant. At the same time, in order to further improve the heat dissipation effect of the coolant, in the present embodiment, the cover 412 can be made of 5 series, 6 series or 7 series aluminum alloy in the prior art.

[0052] Figure 8 The structure of the power converter provided by the embodiment of the utility model is shown as follows Figure 2 . Reference Figure 8 The power module 300 includes a module body 310 and connection parts 320 disposed on opposite sides of the module body 310. The module body 310 is disposed on the liquid cooling part 410 and is in contact with the liquid cooling part 410. The connection part 320 is detachably connected to the capacitor assembly 200 through a plurality of second mounting bolts 330 disposed at intervals from each other.

[0053] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A power converter, characterized in that: include: A housing (100), a capacitor assembly (200), a power module (300) and a heat dissipation assembly (400), wherein the capacitor assembly (200) is detachably connected to the housing (100), the power module (300) is detachably connected to a side of the capacitor assembly (200) facing away from the housing (100), and at least a portion of the heat dissipation assembly (400) is sandwiched between the capacitor assembly (200) and the power module (300).

2. The power converter according to claim 1, characterized in that: The housing (100) is provided with a liquid inlet (110) and a liquid outlet (120); The heat dissipation component (400) comprises a liquid cooling part (410), the interior of the liquid cooling part (410) is hollow to form a liquid cooling cavity, the liquid cooling cavity is connected to the liquid inlet (110) and the liquid outlet (120), and the liquid cooling part (410) is sandwiched between the capacitor component (200) and the power module (300).

3. The power converter according to claim 2, characterized in that: The heat dissipation assembly (400) further comprises a liquid inlet portion (420) and a liquid outlet portion (430), wherein the liquid inlet portion (420) and the liquid outlet portion (430) are respectively connected to the liquid cooling portion (410) and communicated with the liquid cooling chamber, the liquid inlet portion (420) is docked with and communicated with the liquid inlet (110), and the liquid outlet portion (430) is docked with and communicated with the liquid outlet (120).

4. The power converter according to claim 3, characterized in that: The liquid inlet portion (420) and the liquid outlet portion (430) are respectively arranged on two opposite sides of the liquid cooling portion (410), and the capacitor component (200) is located between the liquid inlet portion (420) and the liquid outlet portion (430).

5. The power converter according to claim 3, characterized in that: The capacitor assembly (200) is recessed with a first receiving groove (210) and a second receiving groove (220), and the liquid inlet portion (420) and the liquid outlet portion (430) are respectively embedded in the first receiving groove (210) and the second receiving groove (220).

6. The power converter according to claim 3, characterized in that: The liquid inlet (420) is detachably connected to the liquid inlet (110); and the liquid outlet (430) is detachably connected to the liquid outlet (120).

7. The power converter according to claim 3, characterized in that: The power converter further comprises a sealing member (500), and the sealing member (500) is respectively sandwiched between the liquid inlet (420) and the liquid inlet (110), and between the liquid outlet (430) and the liquid outlet (120).

8. The power converter according to claim 2, characterized in that: The capacitor assembly (200) is provided with a recessed mounting groove (230), and at least a portion of the heat dissipation assembly (400) is accommodated in the mounting groove (230).

9. The power converter according to claim 2, characterized in that: The inner wall of the liquid cooling cavity is provided with a plurality of heat dissipation ribs (413).

10. The power converter according to claim 1, characterized in that: The power module (300) comprises a module body (310) and connection parts (320) arranged on opposite sides of the module body (310); the module body (310) is arranged opposite to the heat dissipation component (400); and the connection parts (320) are detachably connected to the capacitor component (200).

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