Vehicle-mounted water-cooled boost inductor

Abstract

The vehicle-mounted water-cooled boost inductor comprises an inductor assembly and a water-cooled base, the inductor assembly is connected with the water-cooled base in an attached mode through a heat conduction pad, and the inductor assembly comprises a prefabricated framework, magnetic cores arranged in the two ends of the prefabricated framework respectively and coils wound around the magnetic cores in the circumferential direction. The prefabricated framework is fixedly arranged on one side of the water cooling base, the heat conduction pad is arranged between the prefabricated framework and the water cooling base, an air gap is formed between the two magnetic cores, and an aluminum nitride ceramic chip is arranged in the air gap; a cavity is formed in the water cooling base, a plurality of partition plates are arranged in the cavity, and a cooling water flow channel is formed between every two adjacent partition plates. The vehicle-mounted water-cooled boost inductor is simple in structure and convenient to assemble, and has good heat dissipation performance on the premise of meeting the application requirements of current vehicle-mounted high voltage and large current.

Description

Technical Field

[0001] The utility model relates to the technical field of inductors, and particularly relates to a vehicle-mounted water-cooled boost inductor. Background Art

[0002] With the rapid development of new energy technologies, new energy vehicles have gradually become the mainstream in the market. To meet the fast charging needs of consumers, new energy vehicles are gradually developing towards the 800V high-voltage fast charging function. Therefore, the requirements for the voltage withstand, temperature rise, and heat dissipation performance of vehicle-mounted inductors are more stringent.

[0003] The basic structure of existing inductors is a coil and a magnetic core, and generally a ring-wound magnetic core inductor. The inductor with this structure allows a relatively small current to pass through, and its internal heat is generally diffused to the outside gradually through its own structure, with a poor overall heat dissipation effect, making it difficult to meet the application requirements of vehicle-mounted 800V high-voltage and large current. Therefore, there is an urgent need to develop a new type of inductor. Summary of the Utility Model

[0004] Based on this, the purpose of the utility model is to provide a vehicle-mounted water-cooled boost inductor, aiming to solve the technical problems that the existing inductor allows a relatively small current to pass through, has a poor overall heat dissipation effect, and is difficult to meet the application requirements of vehicle-mounted 800V high-voltage and large current.

[0005] The purpose of the utility model is to provide a vehicle-mounted water-cooled boost inductor, which includes an inductor component and a water-cooled base. The inductor component is attached to the water-cooled base through a heat-conducting pad. The inductor component includes a prefabricated skeleton, magnetic cores respectively arranged inside both ends of the prefabricated skeleton, and a coil wound around the circumference of the magnetic cores. The prefabricated skeleton is fixed on one side of the water-cooled base, and a heat-conducting pad is provided between the prefabricated skeleton and the water-cooled base. An air gap is provided between the two magnetic cores, and an aluminum nitride ceramic sheet is arranged in the air gap;

[0006] A cavity is arranged inside the water-cooled base, and a plurality of partition plates are arranged inside the cavity. A cooling water flow channel is formed between two adjacent partition plates.

[0007] The above-mentioned vehicle-mounted water-cooled boost inductor has a simple overall structure and is convenient to assemble. It can have good heat dissipation performance while meeting the application requirements of current vehicle-mounted high voltage and large current. Specifically, by setting a prefabricated skeleton to fix the magnetic core and coil in the inductor assembly, and the prefabricated skeleton is fixed on the water-cooled base, an integrated design of the inductor assembly and the water-cooled base is achieved, which can reduce costs and facilitate large-scale production. Moreover, an air gap is provided between the two magnetic cores arranged at both ends of the prefabricated skeleton, and an aluminum nitride ceramic sheet is provided in the air gap. The design of the aluminum nitride ceramic sheet can improve the heat conduction rate and allow a larger current to pass through. Further, a heat-conducting pad is provided between the prefabricated skeleton and the water-cooled base, and a cooling water flow channel is provided in the water-cooled base. The design of the heat-conducting pad and the cooling water flow channel can improve the heat dissipation effect on the inductor assembly, thereby meeting the application requirements of current vehicle-mounted high voltage and large current.

[0008] In addition, the vehicle-mounted water-cooled boost inductor according to the above-mentioned utility model of the present invention may further have the following additional technical features:

[0009] Further, the water-cooled base includes an installation part, and a water inlet part and a water outlet part horizontally extending outward from both sides of the installation part respectively. The installation part, the water inlet part and the water outlet part are connected to form the cavity. The installation part includes an installation plate, side plates arranged on both sides of the installation plate, and a bottom plate arranged opposite to the installation plate. Both side edges of the bottom plate are connected to both side edges of the installation plate through the two side plates. The inductor assembly is arranged on the side surface of the installation plate facing away from the bottom plate, and a plurality of the partition plates are arranged on the side surface of the installation plate opposite to the bottom plate.

[0010] Further, the partition plates are perpendicular to the side plates, and one end of the partition plate is connected to one of the side plates, and a gap is provided between the other end of the partition plate and the other side plate, so that the two side plates and the plurality of partition plates are connected to form an S-shaped diversion flow channel.

[0011] Further, the water inlet part is provided with a water inlet, and the water inlet is communicated with the cavity, and the diameter of the water inlet gradually decreases outward from one side of the installation part.

[0012] Further, the water outlet part is provided with a water outlet, and the water outlet is communicated with the cavity, and the diameter of the water outlet gradually decreases outward from the other side of the installation part.

[0013] Further, the water inlet part and the water outlet part are symmetrically arranged.

[0014] Further, the magnetic core is of a U-shaped structure.

[0015] Further, the magnetic core is pressed from one or several of iron-silicon powder, iron-silicon-aluminum powder or carbonyl iron powder.

[0016] Furthermore, the gap between the coil and the magnetic core is filled with potting glue. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional structural diagram of the vehicle-mounted water-cooled boost inductor of the present invention;

[0018] Figure 2 is a structural schematic diagram of the vehicle-mounted water-cooled boost inductor of the present invention from a certain perspective;

[0019] Figure 3 is Figure 2 a schematic cross-sectional structure diagram at A-A in

[0020] Figure 4 is Figure 2 a schematic cross-sectional structure diagram at B-B in

[0021] Among them, the above-mentioned drawings include the following reference numerals: 1 - inductor assembly; 11 - prefabricated skeleton; 12 - magnetic core; 13 - coil; 14 - aluminum nitride ceramic sheet; 15 - potting glue; 2 - water-cooled base; 21 - mounting part; 211 - mounting plate; 212 - side plate; 213 - bottom plate; 22 - water inlet part; 23 - water outlet part; 24 - partition; 201 - water inlet; 202 - water outlet.

[0022] The following specific embodiments will further illustrate the present invention in conjunction with the above-mentioned drawings. SPECIFIC EMBODIMENTS

[0023] For the convenience of understanding the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0024] It should be noted that when an element is referred to as being "fixed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this utility model belongs. The terms used in the description of this utility model herein are only for the purpose of describing specific embodiments and are not intended to limit this utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0026] Please refer to Figures 1 to 4 , the vehicle-mounted water-cooled boost inductor of this utility model includes an inductor component 1 and a water-cooled base 2. The inductor component 1 is attached to the water-cooled base 2 through a heat-conducting pad 3. Among them, the inductor component 1 includes a prefabricated skeleton 11, magnetic cores 12 respectively arranged inside both ends of the prefabricated skeleton 11, and a coil 13 wound around the circumference of the magnetic core 12. The prefabricated skeleton 11 is fixed to one side of the water-cooled base 2 by bolts, and a heat-conducting pad 3 is arranged between the prefabricated skeleton 11 and the water-cooled base 2. The overall structure is simple, the assembly is convenient, the integration of the inductor component 1 and the water-cooled base 2 is realized, the cost can be reduced, and it is also convenient for large-scale production.

[0027] Specifically, the magnetic cores 12 inside both ends of the prefabricated skeleton 11 are both U-shaped structures. The U-shaped magnetic core design can reduce the magnetic path length and increase the inductance value of the inductor. There is an air gap between the two magnetic cores 12, and an aluminum nitride ceramic sheet 14 is arranged in the air gap. This ceramic sheet has a high heat conductivity, and can dissipate the heat generated during the operation of the magnetic core 12 body to the surrounding and the water-cooled base 2 through heat conduction. Cooperating with the heat-conducting pad 3 with high insulation and high heat conductivity coefficient arranged between the prefabricated skeleton 11 and the water-cooled base 2, the overall heat dissipation effect of the inductor can be greatly improved.

[0028] Furthermore, the magnetic core 12 is made by pressing one or several powders of iron-silicon powder, iron-silicon-aluminum powder or carbonyl iron powder. As a specific example, in this embodiment, the magnetic core 12 is an iron-silicon powder core.

[0029] Furthermore, the gap between the coil 13 and the magnetic core 12 is filled with potting glue 15. As a specific example, in this embodiment, the coil 13 is a flat vertical winding coil 13, which is wound around the prefabricated skeleton 11 with a magnetic core 12 inside. The two coils 13 respectively lead out connection ends and are connected in series through a copper row arranged above the prefabricated skeleton 11. The gap between the coil 13 and the magnetic core 12 is filled with injection resin to form an insulating layer with high reliability. This insulating layer has a high insulation withstand voltage, can meet the high-voltage impact of the vehicle, and has good insulation withstand voltage performance.

[0030] The water-cooled base 2 is provided with a cavity, and a number of partition plates 24 are arranged in the cavity. A cooling water flow channel is formed between two adjacent partition plates 24. Specifically, in this embodiment, the water-cooled base 2 includes a mounting portion 21, a water inlet portion 22 and a water outlet portion 23 that horizontally extend outward from both sides of the mounting portion 21 respectively. The mounting portion 21, the water inlet portion 22 and the water outlet portion 23 are connected to form a cavity. The mounting portion 21 includes a mounting plate 211, side plates 212 arranged on both sides of the mounting plate 211 and a bottom plate 213 arranged opposite to the mounting plate 211. The two side edges of the bottom plate 213 are connected to the two side edges of the mounting plate 211 through the two side plates 212. A prefabricated skeleton 11 in the inductance component 1 is fixedly arranged on the side of the mounting plate 211 facing away from the bottom plate 213 by bolts. A number of partition plates 24 are arranged on the side of the mounting plate 211 opposite to the bottom plate 213. It should be noted that the water-cooled base 2 in this embodiment is made of metal aluminum alloy, which has good thermal conductivity.

[0031] Further, the partition plate 24 is perpendicular to the side plate 212, and one end of the partition plate 24 is connected to one of the side plates 212, and there is a gap between the other end of the partition plate 24 and the other side plate 212, so that the two side plates 212 and a number of partition plates 24 are connected to form an S-shaped diversion flow channel. The design of the S-shaped diversion flow channel can, on the one hand, increase the heat dissipation area, and on the other hand, ensure that the cooling water entering the cavity does not form a turbulent flow, and the cooling water can flow out of the cavity smoothly, thereby improving the heat dissipation effect of the mounting plate 211 on the inductance component 1.

[0032] Further, the water inlet portion 22 is provided with a water inlet 201, the water inlet is communicated with the cavity, and the diameter of the water inlet 201 gradually decreases from one side of the mounting portion 21 outward. The water outlet portion 23 is provided with a water outlet 202, the water outlet is communicated with the cavity, and the diameter of the water outlet 202 gradually decreases from the other side of the mounting portion 21 outward.

[0033] Further, the water inlet portion 22 and the water outlet portion 23 are symmetrically arranged.

[0034] In summary, the beneficial effects of the vehicle-mounted water-cooled boost inductor of the present utility model are as follows: By setting a prefabricated skeleton to fix the magnetic core and coil in the inductance component, and the prefabricated skeleton is fixedly arranged on the water-cooled base, an integrated design of the inductance component and the water-cooled base is realized, and the overall structure is simple, the assembly is convenient, the cost can be reduced, it is convenient for large-scale production, and there is an air gap between the two magnetic cores arranged at both ends of the prefabricated skeleton, and an aluminum nitride ceramic sheet is arranged in the air gap. The design of the aluminum nitride ceramic sheet can improve the heat conduction rate to allow a larger current to pass through, meeting the application requirements of current vehicle-mounted high voltage and large current. Further, a heat conduction pad is arranged between the prefabricated skeleton and the water-cooled base, and a cooling water flow channel is arranged in the water-cooled base. The design of the heat conduction pad and the cooling water flow channel can improve the heat dissipation effect on the inductance component.

[0035] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0036] The above-described embodiments only represent several implementation manners of the present utility model. Their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the patent of the present utility model shall be subject to the appended claims.

Claims

1. A vehicle-mounted water-cooled boost inductor, characterized in that, It includes an inductance component and a water-cooling base. The inductance component is attached to the water-cooling base through a heat-conducting pad. The inductance component includes a prefabricated skeleton, magnetic cores respectively arranged inside both ends of the prefabricated skeleton, and a coil wound around the circumferences of the magnetic cores. The prefabricated skeleton is fixedly arranged on one side of the water-cooling base, and the heat-conducting pad is arranged between the prefabricated skeleton and the water-cooling base. An air gap is arranged between the two magnetic cores, and an aluminum nitride ceramic sheet is arranged in the air gap. A cavity is arranged inside the water-cooling base, and a plurality of partition plates are arranged in the cavity. Cooling water flow channels are formed between two adjacent partition plates.

2. The on-vehicle water-cooled boost inductor according to claim 1, wherein The water-cooling base includes a mounting part, a water inlet part and a water outlet part horizontally extending outwards from both sides of the mounting part respectively. The mounting part, the water inlet part and the water outlet part are connected to form the cavity. The mounting part includes a mounting plate, side plates arranged on both sides of the mounting plate, and a bottom plate arranged opposite to the mounting plate. Both side edges of the bottom plate are connected to both side edges of the mounting plate through the two side plates. The inductance component is arranged on the side surface of the mounting plate facing away from the bottom plate, and a plurality of the partition plates are arranged on the side surface of the mounting plate opposite to the bottom plate.

3. The on-vehicle water-cooled boost inductor according to claim 2, wherein The partition plates are perpendicular to the side plates, and one end of the partition plate is connected to one of the side plates, and a gap is arranged between the other end of the partition plate and the other side plate, so that the two side plates and the plurality of partition plates are connected to form an S-shaped diversion flow channel.

4. The on-vehicle water-cooled boost inductor according to claim 2, wherein The water inlet part is provided with a water inlet, the water inlet is communicated with the cavity, and the caliber of the water inlet gradually decreases from one side of the mounting part outwards.

5. The on-vehicle water-cooled boost inductor according to claim 4, wherein The water outlet part is provided with a water outlet, the water outlet is communicated with the cavity, and the caliber of the water outlet gradually decreases from the other side of the mounting part outwards.

6. The on-vehicle water-cooled boost inductor according to claim 2, wherein The water inlet part and the water outlet part are symmetrically arranged.

7. The on-vehicle water-cooled boost inductor according to claim 1, wherein, The magnetic core is of a U-shaped structure.

8. The vehicle-mounted water-cooled boost inductor according to claim 1, wherein, The gap between the coil and the magnetic core is filled with potting glue.

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