Transformer assembly, power supply equipment and vehicle

Abstract

The utility model discloses a transformer assembly, power supply equipment and a vehicle. The transformer assembly comprises a first magnetic core and a second magnetic core, the base plates are arranged between the first magnetic core and the second magnetic core, the number of the base plates is multiple, only the upper surface and the lower surface of each base plate in the thickness direction are provided with at least one winding, every two adjacent base plates are arranged in a spaced mode, and a heat exchange channel is formed between every two adjacent base plates. According to the transformer assembly, only the upper surface and the lower surface of each substrate in the thickness direction are provided with at least one winding, the windings on the substrates can be connected through the through holes, parasitic inductance and capacitance parameters are not prone to being introduced, the fault rate of the transformer assembly is reduced, and the service life of the transformer assembly is prolonged. The two adjacent substrates are arranged at intervals and form the heat exchange channels, the heat exchange channels are communicated with the outside of the transformer assembly, external airflow can enter the space between the two adjacent substrates through the heat exchange channels and make direct contact with the winding, and therefore the heat dissipation capacity of the transformer assembly is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of transformer structures, in particular to a transformer component, power supply equipment and a vehicle. Background Art

[0002] In the related art, traditional transformer assemblies mostly adopt a multi-layer PCB winding solution in a single PCB board. This solution arranges a multi-layer copper foil structure inside the PCB board to achieve the arrangement of multi-turn windings, and the connection between each layer of windings is achieved by setting blind holes, buried holes, etc. inside the PCB board; however, this solution has the following problems, one of which is that due to process reasons, the thickness of the inner copper foil of the PCB board is difficult to increase, the current carrying capacity inside the PCB board is low, the inner winding is difficult to dissipate heat, and heat accumulation is serious, which limits the power increase of the transformer assembly; another problem is that compared with the through-hole and pad connection method, the buried hole and blind hole connection method has higher cost and greater resistance, and will introduce parasitic inductance and capacitance parameters, thereby increasing the failure rate of the transformer assembly. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to propose a transformer assembly. According to the transformer assembly of the utility model, at least one winding is provided on the upper and lower surfaces of each substrate only in the thickness direction. The windings on each substrate can be connected through through holes, which is not easy to introduce parasitic inductance and capacitance parameters, thereby reducing the failure rate of the transformer assembly. Two adjacent substrates are spaced apart to form a heat exchange channel, and the heat exchange channel is connected to the outside of the transformer assembly. External airflow can enter between the two adjacent substrates through the heat exchange channel and directly contact the winding, thereby improving the heat dissipation capacity of the transformer assembly. The utility model also proposes a power supply device having the above-mentioned transformer assembly.

[0004] The utility model also provides a vehicle with the power supply device.

[0005] According to the utility model, the transformer assembly includes: a first magnetic core and a second magnetic core, the first magnetic core and the second magnetic core are arranged opposite to each other in the thickness direction; a substrate, the substrate is arranged between the first magnetic core and the second magnetic core, the substrate is constructed in multiple forms and each of the substrates is provided with at least one winding only on the upper and lower surfaces in the thickness direction, and two adjacent substrates are spaced apart from each other and form a heat exchange channel.

[0006] According to the utility model, the transformer assembly is provided with a plurality of substrates, each of which is provided with windings only on the upper and lower surfaces in the thickness direction, and the windings provided on the upper and lower surfaces are connected by tinning through holes. This connection method has low cost and is not easy to introduce parasitic inductance and capacitance parameters, thereby reducing the failure rate of the transformer assembly; two adjacent substrates are spaced apart from each other and form a heat exchange channel, and the heat exchange channel is connected to the outside of the transformer assembly, so that the airflow outside the transformer assembly can enter between the two adjacent substrates through the heat exchange channel, and directly contact the windings for continuous heat exchange, thereby improving the heat dissipation capacity of the transformer assembly.

[0007] According to some embodiments of the present invention, the transformer assembly further includes: an insulating block, at least one of the insulating blocks is disposed between two adjacent substrates, and the insulating block is suitable for supporting any one of the substrates.

[0008] According to some embodiments of the present invention, the insulating block is constructed as a plurality of insulating blocks which are sequentially connected or spaced apart from each other.

[0009] According to some embodiments of the present invention, a first connecting hole penetrating in the thickness direction is formed on each of the substrates, and the windings of each of the substrates are connected through the first connecting hole.

[0010] According to some embodiments of the utility model, each substrate forms a pad on one side in the length direction, and a second connecting hole penetrating in the thickness direction is formed on the pad, and the windings of two adjacent substrates are connected through the second connecting hole.

[0011] According to some embodiments of the utility model, each substrate has a plurality of windings arranged in parallel with each other formed on both sides in the thickness direction, the two adjacent windings are arranged around the same center of a circle, and one of the two adjacent windings is located inside the other winding.

[0012] According to some embodiments of the present invention, the transformer assembly further includes: a first insulating plate and a second insulating plate, wherein the first insulating plate is disposed between the first magnetic core and the substrate, and the second insulating plate is disposed between the second magnetic core and the substrate.

[0013] According to some embodiments of the present invention, both the first insulating plate and the second insulating plate are constructed as plastic parts.

[0014] The power supply device according to the utility model is briefly described below.

[0015] The power supply equipment according to the utility model is provided with a transformer assembly as described in any one of the above embodiments. Since the power supply equipment according to the utility model is provided with the transformer assembly as described in any one of the above embodiments, the transformer assembly arranged in the power supply equipment according to the present application has better heat dissipation effect and lower failure rate, so that the power supply equipment has a long service life, good stability, strong reliability and high safety.

[0016] The vehicle according to the present utility model is briefly described below.

[0017] The vehicle according to the utility model is provided with the power supply device described in any one of the above embodiments. Since the vehicle according to the utility model is provided with the power supply device described in any one of the above embodiments, the vehicle according to the present application has better safety and higher reliability during operation.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 is an exploded schematic diagram of a transformer assembly according to an embodiment of the utility model;

[0021] Figure 2 is a schematic diagram of the winding structure of a transformer assembly according to an embodiment of the utility model;

[0022] Figure 3 This is a schematic diagram of winding connections provided on two adjacent substrates according to an embodiment of the utility model;

[0023] Figure 4 is a side view of a transformer assembly according to an embodiment of the utility model.

[0024] Reference numerals:

[0025] 100. Transformer assembly;

[0026] 11. first magnetic core; 12. second magnetic core; 13. first insulating plate; 14. second insulating plate;

[0027] 21. substrate; 22. winding; 23. upper surface of substrate; 24. lower surface of substrate;

[0028] 201, first connecting hole; 202, second connecting hole; 31, insulating block; 32, heat exchange channel; 33, welding pad. DETAILED DESCRIPTION

[0029] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0030] In the related art, traditional transformer assemblies mostly adopt a multi-layer PCB winding solution in a single PCB board. This solution arranges a multi-layer copper foil structure inside the PCB board to achieve the arrangement of multi-turn windings, and the connection between each layer of windings is achieved by setting blind holes, buried holes, etc. inside the PCB board; however, this solution has the following problems, one of which is that due to process reasons, the thickness of the inner copper foil of the PCB board is difficult to increase, the current carrying capacity inside the PCB board is low, the inner winding is difficult to dissipate heat, and heat accumulation is serious, which limits the power increase of the transformer assembly; another problem is that compared with the through-hole and pad connection method, the buried hole and blind hole connection method has higher cost and greater resistance, and will introduce parasitic inductance and capacitance parameters, thereby increasing the failure rate of the transformer assembly.

[0031] Reference below Figure 1-Figure 4 A transformer assembly according to an embodiment of the present invention is described.

[0032] According to the utility model, the transformer assembly 100 includes: a first magnetic core 11, a second magnetic core 12 and a substrate 21. The first magnetic core 11 and the second magnetic core 12 are arranged opposite to each other in the thickness direction; the substrate 21 is arranged between the first magnetic core 11 and the second magnetic core 12. The substrate 21 is constructed into multiple substrates and each substrate 21 is only provided with at least one winding 22 on the upper and lower surfaces in the thickness direction. Two adjacent substrates 21 are spaced apart from each other and a heat exchange channel 32 is formed.

[0033] In some specific embodiments, the transformer assembly 100 is composed of a first magnetic core 11, a second magnetic core 12 and a substrate 21. The structures and shapes of the first magnetic core 11 and the second magnetic core 12 are not exactly the same. The first magnetic core 11 can be constructed as an I-type structural core, and the second magnetic core 12 can be constructed as an E-type structural core. When the first magnetic core 11 and the second magnetic core 12 are assembled, the defects caused by the alignment error of the first magnetic core 11 and the second magnetic core 12 in the traditional transformer assembly 100 that are constructed as the same structure can be effectively avoided, thereby reducing the requirements for the assembly process error of the first magnetic core 11 and the second magnetic core 12. A substrate 21 is arranged between the first magnetic core 11 and the second magnetic core 12, and the substrate 21 is insulated from the first magnetic core 11 and the second magnetic core 12. The material of the substrate 21 can be constructed of epoxy glass fiber (FR-4). The substrate 21 can be constructed as a plurality of, Each substrate 21 is only provided with windings 22 on the upper and lower surfaces in the thickness direction. The windings 22 arranged on the upper and lower surfaces are connected by tinning through holes. This connection method is low in cost and is not easy to introduce parasitic inductance and capacitance parameters, thereby reducing the failure rate of the transformer assembly 100. The two adjacent substrates 21 are spaced apart from each other and a heat exchange channel 32 is formed. During the operation of the transformer assembly 100, most of the heat comes from the windings 22. The windings 22 in the present application are arranged on the upper and lower surfaces in the thickness direction of the substrate 21. By arranging a heat exchange channel 32 between the two adjacent substrates 21 and the heat exchange channel 32 being connected to the outside of the transformer assembly 100, the external airflow of the transformer assembly 100 can enter between the two adjacent substrates 21 through the heat exchange channel 32, and directly contact the windings 22 for continuous heat exchange, thereby improving the heat dissipation capacity of the transformer assembly 100.

[0034] According to the utility model, the transformer assembly 100 is provided with a plurality of substrates 21, and each substrate 21 is provided with windings 22 only on the upper and lower surfaces in the thickness direction, and the windings 22 arranged on the upper and lower surfaces are connected by tinning through holes. This connection method has low cost and is not easy to introduce parasitic inductance and capacitance parameters, thereby reducing the failure rate of the transformer assembly 100; two adjacent substrates 21 are arranged at intervals with each other and form a heat exchange channel 32, and the heat exchange channel 32 is connected to the outside of the transformer assembly 100, so that the external airflow of the transformer assembly 100 can enter between the two adjacent substrates 21 through the heat exchange channel 32, and directly contact the windings 22 for continuous heat exchange, thereby improving the heat dissipation capacity of the transformer assembly 100.

[0035] According to some embodiments of the present invention, the transformer assembly 100 further includes: an insulating block 31 . At least one insulating block 31 is disposed between two adjacent substrates 21 . The insulating block 31 is suitable for supporting any one of the substrates 21 .

[0036] In some specific embodiments, an insulating block 31 is provided in the transformer assembly 100, and the insulating block 31 is provided between two adjacent substrates 21. On the one hand, the insulating block 31 can effectively isolate the two adjacent substrates 21, avoiding direct contact between the windings 22 provided on the two adjacent substrates 21, effectively preventing a short circuit of the transformer assembly 100, and ensuring the stability and reliability of the transformer assembly 100 during operation. On the other hand, the insulating block 31 can support any one of the substrates 21, and the length of the insulating block 31 can be consistent with the length of the substrate 21, and the width of the insulating block 31 is much smaller than the width of the substrate 21, so that the adjacent The two substrates 21 are spaced apart, and there is a certain space between the two adjacent substrates 21 to form a heat exchange channel 32. The heat exchange channel 32 is directly connected to the outside of the transformer assembly 100. During the operation of the transformer assembly 100, most of the heat is generated by the winding 22. The winding 22 in the present application is arranged on the upper and lower surfaces in the thickness direction of the substrate 21. By arranging the heat exchange channel 32 between the two adjacent substrates 21, the external airflow of the transformer assembly 100 can enter between the two adjacent substrates 21 through the heat exchange channel 32, and directly contact the winding 22 for continuous heat exchange, thereby enhancing the heat dissipation capacity of the transformer assembly.

[0037] According to some embodiments of the utility model, the insulating blocks 31 are constructed as a plurality of insulating blocks 31 which are sequentially connected or arranged at intervals with each other, and a heat exchange channel 32 is formed between two adjacent insulating blocks 31, so that a plurality of heat exchange channels 32 are arranged between two adjacent substrates 21 to increase the airflow rate between the two adjacent substrates 21, increase the contact area between the airflow and the winding 22, further enhance the heat exchange effect between the airflow and the winding 22, and improve the heat dissipation capacity of the transformer assembly 100.

[0038] According to some embodiments of the utility model, a first connecting hole 201 penetrating in the thickness direction is formed on each substrate 21, and tin is arranged in the first connecting hole 201 to connect the windings 22 arranged on the upper and lower surfaces of the substrate 21, thereby realizing the flow of current on the substrate 21. The windings 22 arranged on the upper and lower surfaces in the thickness direction of the substrate 21 are connected by tin implantation through the through hole. This method has low cost and is not easy to introduce parasitic inductance and capacitance parameters, thereby reducing the failure rate of the transformer assembly 100.

[0039] According to some embodiments of the utility model, a soldering pad 33 is formed on one side of each substrate 21 in the length direction, the line outlet of one of the two adjacent substrates 21 is located on the lower surface of the soldering pad 33, and the line inlet of the other substrate 21 is located on the upper surface of the soldering pad 33, one of the substrates 21 is located above the other substrate 21 in the thickness direction, and the soldering pads 33 of the two adjacent substrates 21 are located at the same height and are provided with second connecting holes 202 that are opposite to each other, and the second connecting holes 202 penetrate the soldering pad 33 in the thickness direction, and by planting tin in the second connecting hole 202, an electrical connection is achieved between the lower surface of one of the soldering pads 33 and the upper surface of the other of the soldering pads 33, thereby achieving the purpose of electrical connection of the two adjacent substrates 21.

[0040] In addition, when the substrates 21 are connected, it is necessary to ensure that the current direction is consistent, and is in a clockwise or counterclockwise direction. Therefore, the wires need to cross when connecting between the boards, and the connection is relatively complicated. By symmetrically wiring the windings 22 set on two adjacent substrates 21, the connection between the substrates 21 can be achieved by only connecting the upper and lower parts. The upper and lower connection method can be achieved by soldering, avoiding complex cross-wiring.

[0041] According to some embodiments of the utility model, each substrate 21 has multiple windings 22 arranged in parallel with each other on both sides in the thickness direction, two adjacent windings 22 are arranged around the same center of a circle, and one of the two adjacent windings 22 is located inside the other winding 22.

[0042] In some specific embodiments, two windings 22 arranged parallel to each other and spaced apart may be respectively provided at two sides of each substrate 21 in the thickness direction. The two windings 22 are arranged around the same center of a circle, and one of them is located inside the other winding 22. During the operation of the transformer assembly 100, generally only one winding 22 is provided on the substrate 21 of the traditional transformer assembly 100. Under high-frequency current conditions, a skin effect may be generated, thereby increasing the resistance of the winding 22 and aggravating the heating of the winding 22. In the present application, a layout of multiple windings 22 is provided so that the multiple windings 22 share the current together, so as to effectively reduce the skin effect and reduce the heating of the winding 22.

[0043] According to some embodiments of the present invention, the transformer assembly 100 further includes: a first insulating plate 13 and a second insulating plate 14 , wherein the first insulating plate 13 is disposed between the first magnetic core 11 and the substrate 21 , and the second insulating plate 14 is disposed between the second magnetic core 12 and the substrate 21 .

[0044] In some specific embodiments, a first insulating plate 13 and a second insulating plate 14 are further provided in the transformer assembly 100. The first insulating plate 13 and the second insulating plate 14 are respectively provided between the first magnetic core 11 and the substrate 21 and between the second magnetic core 12 and the substrate 21, and the sizes of the first insulating plate 13 and the second insulating plate 14 can be consistent with the sizes of the substrate 21. The first insulating plate 13 effectively isolates the first magnetic core 11 from the substrate 21, and the second insulating plate 14 effectively isolates the second magnetic core 12 from the substrate 21, thereby avoiding direct contact between the first magnetic core 11 and the second magnetic core 12 and the winding 22 provided on the substrate 21, effectively preventing the transformer assembly 100 from short circuiting, and ensuring the stability and reliability of the transformer assembly 100 during operation.

[0045] In addition, the first insulating plate 13 and the second insulating plate 14 can be constructed into a rectangle, so that the processing and manufacturing of the first insulating plate 13 and the second insulating plate 14 are more convenient and simple. At the same time, due to the simple structure of the first insulating plate 13 and the second insulating plate 14, the first insulating plate 13 and the second insulating plate 14 can be fixed to the substrate 21 by bolt connection, which reduces the assembly difficulty of the transformer assembly 100 and improves the assembly efficiency of the transformer assembly 100.

[0046] According to some embodiments of the present invention, the first insulating plate 13 and the second insulating plate 14 are both constructed as plastic parts.

[0047] In some specific embodiments, the first insulating plate 13 and the second insulating plate 14 can be constructed of polyphenylene oxide plastic (PPO), which can maintain stability under high temperature conditions and has high heat resistance. Polyphenylene oxide plastic (PPO) also has good insulation performance and can effectively isolate current to ensure stable operation of the transformer assembly 100. Polyphenylene oxide plastic (PPO) also has good impact resistance, is not easy to break or deform, and can play a certain protective role on the substrate 21. In addition, polyphenylene oxide plastic (PPO) is relatively light and has a low density, which can reduce the weight of the transformer assembly 100 to a certain extent.

[0048] The power supply device according to the utility model is briefly described below.

[0049] The power supply equipment according to the utility model is provided with the transformer assembly 100 described in any one of the above embodiments. Since the power supply equipment according to the utility model is provided with the transformer assembly 100 described in any one of the above embodiments, the transformer assembly 100 arranged in the power supply equipment according to the present application has better heat dissipation effect and lower failure rate, so that the power supply equipment has a long service life, good stability, strong reliability and high safety.

[0050] The vehicle according to the present utility model is briefly described below.

[0051] The vehicle according to the utility model is provided with the power supply device described in any one of the above embodiments. Since the vehicle according to the utility model is provided with the power supply device described in any one of the above embodiments, the vehicle according to the present application has better safety and higher reliability during operation.

[0052] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0053] In the description of the present invention, "first feature" or "second feature" may include one or more of the features.

[0054] In the description of the present invention, "plurality" means two or more.

[0055] In the description of the present invention, a first feature being “above” or “below” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact but are in contact with each other via another feature therebetween.

[0056] In the description of the present invention, a first feature being "above", "above" and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. In the description of this specification, descriptions with reference to terms such as "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" mean that specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention.

[0057] 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 any one or more embodiments or examples in a suitable manner.

[0058] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A transformer assembly, characterized in that: include: A first magnetic core and a second magnetic core, wherein the first magnetic core and the second magnetic core are arranged opposite to each other in a thickness direction; A substrate is arranged between the first magnetic core and the second magnetic core. The substrate is constructed in multiple pieces and each substrate is provided with at least one winding only on the upper and lower surfaces in the thickness direction. Two adjacent substrates are arranged at intervals to form a heat exchange channel.

2. The transformer assembly according to claim 1, characterized in that: Also includes: Insulating block: at least one insulating block is disposed between two adjacent substrates, and the insulating block is suitable for supporting any one of the substrates.

3. The transformer assembly according to claim 2, characterized in that: The insulating blocks are configured as a plurality of insulating blocks which are sequentially connected or spaced apart from each other.

4. The transformer assembly according to claim 1, characterized in that: A first communication hole penetrating in the thickness direction is formed on each of the substrates, and the windings of each of the substrates are connected through the first communication hole.

5. The transformer assembly according to claim 4, characterized in that: A pad is formed on one side of each substrate in the length direction, and a second connecting hole is formed on the pad and penetrates in the thickness direction, and the windings of two adjacent substrates are connected through the second connecting hole.

6. The transformer assembly according to claim 1, characterized in that: Each substrate has a plurality of windings arranged in parallel on both sides in the thickness direction, the two adjacent windings are arranged around the same center, and one of the two adjacent windings is located inside the other winding.

7. The transformer assembly according to claim 1, characterized in that: Also includes: A first insulating plate and a second insulating plate, wherein the first insulating plate is disposed between the first magnetic core and the substrate, and the second insulating plate is disposed between the second magnetic core and the substrate.

8. The transformer assembly according to claim 7, characterized in that: The first insulating plate and the second insulating plate are both constructed as plastic parts.

9. A power supply device, characterized in that: A transformer assembly comprising any one of claims 1-8.

10. A vehicle, characterized in that: The invention comprises the power supply device as claimed in claim 9.

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