Inductor assembly and boost system

Abstract

The utility model provides an inductor assembly and a boosting system. The inductor assembly comprises a shell, an inductor and a heat conduction gasket. An accommodating cavity is formed in the shell, and the inductor is mounted in the accommodating cavity; the first side surface of the heat-conducting gasket is in multi-surface contact with an inductance coil of the inductor, and the second side surface of the heat-conducting gasket is in multi-surface contact with the shell corresponding to the accommodating cavity; and a cooling channel is arranged in the shell. According to the utility model, the inductor is placed in the accommodating cavity of the shell, the first side surface of the heat-conducting gasket is in multi-surface contact with the inductance coil of the inductor, and the second side surface of the heat-conducting gasket is connected with the inner wall of the shell corresponding to the accommodating cavity, so that the contact area of the heat-conducting gasket with the inductance coil and the inner wall of the shell corresponding to the accommodating cavity is enlarged; heat generated by the inductance coil can be quickly transferred into the shell; the cooling channel used for being filled with the cooling liquid is arranged in the shell, the cooling liquid flows in the cooling channel, heat received by the shell can be taken away, and the temperature of the inductance coil is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of inductance, and in particular relates to an inductance component and a boost system. Background Art

[0002] In order to improve the mileage of electric vehicles and increase the power of the drive motor, the battery voltage needs to be boosted. As a key component of the boost system, the cooling capacity of the inductor directly affects the efficiency and stability of the boost system. Currently, there are two main cooling methods for inductors: water cooling and oil cooling. In the prior art, the inductor assembly generally uses a thermal pad to fit one surface of the inductor coil to the cooling channel. Heat is exchanged with the cooling channel through only one surface, and the heat dissipation capacity is poor. Utility Model Content

[0003] The utility model provides an inductor component to solve the problems of small heat exchange area and poor heat dissipation capacity of the existing inductor component.

[0004] An inductor assembly comprises a housing, an inductor and a thermally conductive pad;

[0005] The housing is provided with a receiving cavity, and the inductor is installed in the receiving cavity;

[0006] The first side surface of the thermally conductive gasket is in contact with the inductor coil of the inductor on multiple surfaces, and the second side surface of the thermally conductive gasket is in contact with the shell corresponding to the accommodating cavity on multiple surfaces;

[0007] A cooling channel is arranged in the shell.

[0008] Preferably, the housing comprises a main body plate, two first support plates extending from both end edges of the main body plate in the same vertical direction, and two second support plates extending from one end of the two first support plates in opposite directions;

[0009] The main body plate and the two first support plates cooperate to form the accommodating cavity;

[0010] The second side surface of the thermal conductive gasket is connected to the main body plate and the two first support plates.

[0011] Preferably, it further comprises cooling fins, wherein the cooling fins are arranged in the cooling channel.

[0012] Preferably, the cooling channel comprises a first channel arranged in the main body plate, a second channel arranged in the first support plate and a third channel arranged in the second support plate, and the first channel, the second channel and the third channel are connected;

[0013] The cooling fin includes a first sheet and two second sheets extending from both end edges of the first sheet in the same direction. The first sheet is disposed in the first channel, and the second sheet is disposed in the second channel.

[0014] Preferably, an end surface of the second sheet away from the first sheet is configured as an inclined surface, the inclined surface faces the third channel, and the inclined surface matches the third channel.

[0015] Preferably, a chamfer is provided at the connection between the second support plate and the first support plate;

[0016] The inductor coil and the thermally conductive gasket are interference-mounted between the two first support plates and connected to the main body plate.

[0017] Preferably, the inductor comprises two connecting protrusions arranged in the axial direction of winding of the inductor coil;

[0018] The housing further comprises two mounting plates connected to the main body plate, the two mounting plates are respectively arranged on both sides of the main body plate, and each mounting plate comprises a first connecting portion arranged along the horizontal direction of the main body plate and a second connecting portion extending from the edge of the first connecting portion in the vertical direction;

[0019] Each of the connecting protrusions is connected to the second connecting portion on the same side.

[0020] Preferably, it further comprises a positioning assembly, wherein the positioning assembly comprises a positioning hole and a positioning pin;

[0021] The positioning hole is arranged on the connecting protrusion, the positioning pin is arranged on the second connecting portion, and the positioning hole and the positioning pin are matched with each other;

[0022] Alternatively, the positioning pin is arranged on the connecting protrusion, the positioning hole is arranged on the second connecting portion, and the positioning hole and the positioning pin are matched with each other.

[0023] Preferably, it further comprises a fixing assembly, wherein the fixing assembly comprises a threaded hole and a stud;

[0024] The threaded hole is arranged on the connecting protrusion, the stud is arranged on the second connecting portion, and the threaded hole and the stud are matched with each other;

[0025] Alternatively, the stud is arranged on the connecting protrusion, the threaded hole is arranged on the second connecting portion, and the threaded hole and the stud are matched with each other.

[0026] A boost system comprises a boost circuit, wherein the boost circuit is provided with the inductor component.

[0027] The utility model places the inductor in the housing cavity of the shell, the first side of the thermally conductive gasket is in multi-faceted contact with the inductor coil of the inductor, and the second side of the thermally conductive gasket is in contact with the inner wall of the shell corresponding to the housing cavity. By expanding the contact area between the thermally conductive gasket and the inductor coil and the inner wall of the shell corresponding to the housing cavity, the heat generated by the inductor coil can be quickly transferred to the shell; a cooling channel for filling coolant is provided in the shell, and the coolant flows in the cooling channel to take away the heat received by the shell, thereby reducing the temperature of the inductor coil. This arrangement increases the contact area between the inductor coil and the thermally conductive gasket. Similarly, increasing the contact area between the thermally conductive gasket and the inner wall of the shell corresponding to the housing cavity is equivalent to increasing the contact area between the inductor coil and the cooling channel, thereby enhancing the heat dissipation capacity of the inductor component, reducing the working temperature of the inductor, and improving the upper limit and stability of the inductor. Among them, the material of the shell is a material with a relatively good thermal conductivity, such as aluminum, copper, etc., which can improve the thermal conductivity rate; the thermally conductive pad is soft and has a certain elasticity, and can be attached to the inductor coil. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a cross-sectional view of the inductor assembly in the utility model;

[0029] Figure 2 It is an axonometric view of the housing in the utility model;

[0030] Figure 3 It is an axial view of the inductor in the utility model.

[0031] Among them, 1. shell; 11. main plate; 12. first support plate; 13. second support plate; 14. mounting plate; 141. first connecting part; 142. second connecting part; 2. inductor; 21. inductor coil; 22. connecting protrusion; 3. thermal conductive gasket; 4. accommodating cavity; 5. cooling channel; 51. first channel; 52. second channel; 53. third channel; 6. cooling fin; 61. first sheet; 62. second sheet; 71. positioning hole; 72. positioning pin; 81. threaded hole; 82. stud. DETAILED DESCRIPTION

[0032] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0033] In the description of the present invention, it should be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are 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 cannot be understood as a limitation on the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] The utility model embodiment provides an inductor component, referring to Figure 1-3 The inductor assembly includes a shell 1, an inductor 2 and a thermally conductive gasket 3; a housing cavity 4 is provided on the shell 1, and the inductor 2 is installed in the housing cavity 4; a first side surface of the thermally conductive gasket 3 is in multi-faceted contact with the inductor coil 21 of the inductor 2, and a second side surface of the thermally conductive gasket 3 is in multi-faceted contact with the shell 1 corresponding to the housing cavity 4; a cooling channel 5 is provided in the shell 1.

[0036] As an example, the inductor 2 is placed in the accommodating cavity 4 of the shell 1, the first side of the thermally conductive gasket 3 is in multi-faceted contact with the inductor coil 21 of the inductor 2, and the second side of the thermally conductive gasket 3 is in multi-faceted contact with the shell 1 corresponding to the accommodating cavity 4. By expanding the contact area between the thermally conductive gasket 3 and the inductor coil 21 and the inner wall of the shell 1 corresponding to the accommodating cavity 4, the heat generated by the inductor coil 21 can be quickly transferred to the shell 1; the shell 1 is provided with a cooling channel 5 for filling with coolant, and the coolant flows in the cooling channel 5 to take away the heat received by the shell 1, thereby reducing the temperature of the inductor coil 21. In this way, the contact area between the inductor coil 21 and the thermally conductive gasket 3 is increased. Similarly, increasing the contact area between the thermally conductive gasket 3 and the inner wall of the shell 1 corresponding to the accommodating cavity 4 is equivalent to increasing the contact area between the inductor coil 21 and the cooling channel 5, thereby enhancing the heat dissipation capacity of the inductor component, reducing the working temperature of the inductor 2, and improving the capacity upper limit and stability of the inductor 2. The shell 1 is made of a material with good thermal conductivity, such as aluminum, copper, etc., which can improve the thermal conductivity rate; the thermal conductive pad 3 is soft and has a certain elasticity, and can be attached to the inductor 21.

[0037] In one embodiment, referring to Figure 1 and Figure 2 The shell 1 includes a main body plate 11, two first support plates 12 extending from the two end edges of the main body plate 11 along the same vertical direction, and two second support plates 13 extending from one end of the two first support plates 12 in opposite directions; the main body plate 11 and the two first support plates 12 cooperate to form a accommodating cavity 4; the second side surface of the thermal conductive gasket 3 is connected to the main body plate 11 and the two first support plates 12.

[0038] As an example, the shell 1 includes a main plate 11, two first support plates 12 and two second support plates 13; the two first support plates 12 extend from the two end edges of the main plate 11 along the same vertical direction, and the three cooperate to form a U-shaped accommodating cavity 4, which is convenient for installing the inductor 2 in the accommodating cavity 4, and the first side surface of the thermal conductive gasket 3 is in multi-faceted contact with the inductor coil 21 of the inductor 2, and the second side surface of the thermal conductive gasket 3 is connected to the main plate 11 and the two first support plates 12, thereby increasing the contact area between the inductor coil 21 and the inner wall of the shell 1 corresponding to the accommodating cavity 4, and can quickly transfer the heat generated by the inductor coil 21 to the shell 1, thereby reducing the operating temperature of the inductor 2.

[0039] In one embodiment, referring to Figure 1 The inductor assembly further includes cooling fins 6 , which are disposed in the cooling channel 5 .

[0040] As an example, cooling fins 6 are provided in the cooling channel 5 to improve the heat exchange efficiency of the cooling channel 5 , facilitate rapid removal of heat from the housing 1 , and reduce the temperature of the inductor 21 .

[0041] In one embodiment, referring to Figure 1 The cooling channel 5 includes a first channel 51 arranged in the main plate 11, a second channel 52 arranged in the first support plate 12 and a third channel 53 arranged in the second support plate 13, and the first channel 51, the second channel 52 and the third channel 53 are connected; the cooling fin 6 includes a first sheet 61 and two second sheets 62 extending from the two end edges of the first sheet 61 in the same direction, the first sheet 61 is arranged in the first channel 51, and the second sheet 62 is in the second channel 52.

[0042] As an example, the cooling channel 5 includes a first channel 51, a second channel 52 and a third channel 53, wherein the first channel 51 is arranged in the first channel 51 in the main plate 11, the second channel 52 is arranged in the first support plate 12, and the third channel 53 is arranged in the second support plate 13. The first channel 51, the second channel 52 and the third channel 53 are connected to form a cooling channel 5 that runs through the entire shell 1. The coolant flows in the cooling channel 5 and can take away the heat received by the shell 1 to reduce the temperature of the inductor 21; the cooling fin 6 includes a first sheet 61 and two second sheets 62, the first sheet 61 is arranged in the first channel 51, and the second sheet 62 is arranged in the second channel 52. In this way, the position of the cooling fin 6 in the cooling channel 5 corresponds to the inductor 21, which can improve the heat exchange efficiency of the cooling channel 5.

[0043] In one embodiment, referring to Figure 1 An end surface of the second sheet 62 away from the first sheet 61 is set as an inclined surface, the inclined surface faces the third channel 53, and the inclined surface matches the third channel 53.

[0044] As an example, the coolant flows in the cooling channel 5 and cooperates with the cooling fins 6 to take away the heat in the shell 1. The end surface of the second sheet 62 away from the first sheet 61 is set as a slope, the slope faces the third channel 53, and the slope matches the third channel 53. This makes it easier for the cooling fins 6 to contact the coolant, thereby improving the coolant's fluidity and the heat dissipation efficiency.

[0045] In one embodiment, referring to Figure 1 and Figure 2 A chamfer is provided at the connection between the second support plate 13 and the first support plate 12 ; the inductor coil 21 and the thermally conductive gasket 3 are interference-mounted between the two first support plates 12 and connected to the main plate 11 .

[0046] As an example, a chamfer is provided at the connection between the second support plate 13 and the first support plate 12, so as to facilitate the smooth assembly of the inductor 2 into the U-shaped accommodating cavity 4; the thermal conductive gasket 3 is soft and has a certain elasticity, and can be fitted on the inductor coil 21. By utilizing the elasticity of the thermal conductive gasket 3, the inductor coil 21 and the thermal conductive gasket 3 are interference-mounted between the two first support plates 12, ensuring that the inductor coil 21 and the U-shaped accommodating cavity 4 are tightly fitted, so that the heat exchange area between the inductor coil 21 and the housing 1 is greatly increased, thereby enhancing the heat dissipation capacity of the inductor component, reducing the temperature rise of the inductor 2, and improving the system efficiency.

[0047] In one embodiment, referring to Figure 2 and Figure 3 The inductor 2 includes two connecting protrusions 22 arranged in the axial direction of the winding of the inductor coil 21; the housing 1 also includes two mounting plates 14 connected to the main body plate 11, and the two mounting plates 14 are respectively arranged on both sides of the main body plate 11, and each mounting plate 14 includes a first connecting portion 141 arranged along the horizontal direction of the main body plate 11 and a second connecting portion 142 extending from the edge of the first connecting portion 141 in the vertical direction; each connecting protrusion 22 is connected to the second connecting portion 142 on the same side.

[0048] As an example, a mounting plate 14 is respectively provided on both sides of the main plate 11, and each mounting plate 14 includes a first connecting portion 141 arranged along the horizontal direction of the main plate 11 and a second connecting portion 142 extending from the edge of the first connecting portion 141 in the vertical direction; the first connecting portion 141 and the second connecting portion 142 cooperate to form a stepped mounting plate 14, and the two stepped mounting plates 14 cooperate with the main plate 11 to limit the inductor coil 21 and ensure that the installation of the inductor 2 is safer and more stable; two connecting protrusions 22 are provided in the axial direction of the winding of the inductor coil 21, and each connecting protrusion 22 is connected to a corresponding second connecting portion 142, so as to facilitate the installation of the inductor 2 on the housing 1.

[0049] In one embodiment, referring to Figure 2 and Figure 3 The inductor assembly also includes a positioning assembly, which includes a positioning hole 71 and a positioning pin 72; the positioning hole 71 is arranged on the connecting protrusion 22, the positioning pin 72 is arranged on the second connecting portion 142, and the positioning hole 71 and the positioning pin 72 are matched accordingly; or, the positioning pin 72 is arranged on the connecting protrusion 22, the positioning hole 71 is arranged on the second connecting portion 142, and the positioning hole 71 and the positioning pin 72 are matched accordingly.

[0050] As an example, the positioning assembly includes a positioning hole 71 and a positioning pin 72, the positioning hole 71 is arranged on the connecting protrusion 22, the positioning pin 72 is arranged on the second connecting portion 142, the positioning hole 71 and the positioning pin 72 are matched with each other, and when a connecting protrusion 22 is connected to the second connecting portion 142 on the same side, it can play a positioning role, which is convenient for installing and removing the inductor 2. Similarly, the positioning pin 72 is arranged on the connecting protrusion 22, and the positioning hole 71 is arranged on the second connecting portion 142, which can also achieve the above function.

[0051] In one embodiment, referring to Figure 2 and Figure 3 The inductor assembly also includes a fixing assembly, which includes a threaded hole 81 and a stud 82; the threaded hole 81 is arranged on the connecting protrusion 22, the stud 82 is arranged on the second connecting portion 142, and the threaded hole 81 and the stud 82 are matched accordingly; or, the stud 82 is arranged on the connecting protrusion 22, the threaded hole 81 is arranged on the second connecting portion 142, and the threaded hole 81 and the stud 82 are matched accordingly.

[0052] As an example, the fixing assembly includes a threaded hole 81 and a stud 82. The threaded hole 81 is arranged on the connecting protrusion 22, and the stud 82 is arranged on the second connecting portion 142. The threaded hole 81 and the stud 82 are matched with each other. When a connecting protrusion 22 is connected to the second connecting portion 142 on the same side, it can play a fixing role, which is convenient for installing and removing the inductor 2. The structure is simple and reliable. Similarly, the stud 82 is arranged on the connecting protrusion 22 and the threaded hole 81 is arranged on the second connecting portion 142, which can also achieve the above function.

[0053] An embodiment of the utility model provides a boost system, comprising a boost circuit, wherein an inductor component is arranged in the boost circuit.

[0054] As an example, a boost system is provided in the inverter box of a car, the boost system includes a boost circuit, an inductor component is provided in the boost circuit, the inductor 2 is placed in the accommodating cavity 4 of the shell 1, the first side of the thermally conductive gasket 3 is in multi-faceted contact with the inductor coil 21 of the inductor 2, the second side of the thermally conductive gasket 3 is in contact with the inner wall of the shell 1 corresponding to the accommodating cavity 4, and the heat generated by the inductor coil 21 can be quickly transferred to the shell 1 by expanding the contact area between the thermally conductive gasket 3 and the inductor coil 21 and the inner wall of the shell 1 corresponding to the accommodating cavity 4; a cooling channel 5 for filling coolant is provided in the shell 1, and the coolant flows in the cooling channel 5 to take away the heat received by the shell 1, thereby reducing the temperature of the inductor coil 21. This arrangement increases the contact area between the inductor 21 and the thermally conductive pad 3. Similarly, increasing the contact area between the thermally conductive pad 3 and the inner wall of the housing 1 corresponding to the accommodating cavity 4 is equivalent to increasing the contact area between the inductor 21 and the cooling channel 5, thereby enhancing the heat dissipation capacity of the inductor component, reducing the operating temperature of the inductor 2, and improving the capacity upper limit and stability of the inductor 2. Among them, the material of the housing 1 is a material with a relatively good thermal conductivity, such as aluminum, copper, etc., which can improve the thermal conductivity rate; the thermally conductive pad 3 is soft and has a certain elasticity, and can be attached to the inductor 21; the direction of the cooling channel 5 can be parallel or perpendicular to the axis of the inductor 21 according to the arrangement of the inductor 2 in the inverter box.

[0055] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An inductor component, characterized in that: Includes a housing, an inductor and a thermal pad; The housing is provided with a receiving cavity, and the inductor is installed in the receiving cavity; The first side surface of the thermally conductive gasket is in contact with the inductor coil of the inductor on multiple surfaces, and the second side surface of the thermally conductive gasket is in contact with the shell corresponding to the accommodating cavity on multiple surfaces; A cooling channel is arranged in the shell.

2. The inductor assembly according to claim 1, characterized in that: The housing comprises a main body plate, two first support plates extending from both end edges of the main body plate in the same vertical direction, and two second support plates extending from one end of the two first support plates in opposite directions; The main body plate and the two first support plates cooperate to form the accommodating cavity; The second side surface of the thermal conductive gasket is connected to the main body plate and the two first support plates.

3. The inductor assembly according to claim 1, characterized in that: Also included are cooling fins, which are disposed in the cooling channel.

4. The inductor assembly according to claim 2 or 3, characterized in that: The cooling channel comprises a first channel arranged in the main body plate, a second channel arranged in the first support plate, and a third channel arranged in the second support plate, and the first channel, the second channel and the third channel are connected; The cooling fin includes a first sheet and two second sheets extending from both end edges of the first sheet in the same direction. The first sheet is disposed in the first channel, and the second sheet is disposed in the second channel.

5. The inductor assembly according to claim 4, characterized in that: An end surface of the second sheet body away from the first sheet body is set as an inclined surface, the inclined surface faces the third channel, and the inclined surface matches the third channel.

6. The inductor assembly according to claim 2, characterized in that: A chamfer is provided at a connection between the second support plate and the first support plate; The inductor coil and the thermally conductive gasket are interference-mounted between the two first support plates and connected to the main body plate.

7. The inductor assembly according to claim 2, characterized in that: The inductor comprises two connecting protrusions arranged in the winding axial direction of the inductor coil; The housing further comprises two mounting plates connected to the main body plate, the two mounting plates are respectively arranged on both sides of the main body plate, and each mounting plate comprises a first connecting portion arranged along the horizontal direction of the main body plate and a second connecting portion extending from the edge of the first connecting portion in the vertical direction; Each of the connecting protrusions is connected to the second connecting portion on the same side.

8. The inductor assembly according to claim 7, characterized in that: Also included is a positioning assembly, the positioning assembly comprising a positioning hole and a positioning pin; The positioning hole is arranged on the connecting protrusion, the positioning pin is arranged on the second connecting portion, and the positioning hole and the positioning pin are matched with each other; Alternatively, the positioning pin is arranged on the connecting protrusion, the positioning hole is arranged on the second connecting portion, and the positioning hole and the positioning pin are matched with each other.

9. The inductor assembly according to claim 7, characterized in that: Also included is a fixing assembly, the fixing assembly including a threaded hole and a stud; The threaded hole is arranged on the connecting protrusion, the stud is arranged on the second connecting portion, and the threaded hole and the stud are matched with each other; Alternatively, the stud is arranged on the connecting protrusion, the threaded hole is arranged on the second connecting portion, and the threaded hole and the stud are matched with each other.

10. A boost system, characterized in that: It comprises a boost circuit, in which the inductor component according to any one of claims 1 to 9 is arranged.

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