Highway electrification vehicle-mounted power supply four-phase transformer

Abstract

The utility model provides a highway electrification vehicle-mounted power supply four-phase transformer, the transformer comprises four winding groups and a multi-circle layer winding, the bottom of the four winding groups is fixedly provided with a lower-layer positioning block, the lower-layer positioning block is a rectangular block body, and the four winding groups are arranged in a matrix manner relative to the central point of the upper plane of the lower-layer positioning block; the multi-layer winding coils are distributed on the peripheral side of the winding set, the inlet and outlet sections of the multi-layer winding coils wound on the same winding set are provided with external winding coils, a better vehicle-mounted using effect is achieved through the integrated winding, and the vehicle-mounted winding set can more conveniently adapt to the installation space requirements of vehicle bodies of various models; by adopting the integrated design, the loss of the magnetic core can be reduced, the efficiency of the product can be improved, the electromagnetic performance and the heat dissipation performance of the transformer can be improved, and higher-efficiency and more stable electric energy transmission can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of small transformer equipment, in particular to a four-phase transformer for a highway electrification vehicle power supply. Background Art

[0002] Four-phase transformers have broad application prospects in the field of power transmission and conversion. The introduction of four-phase transformers in the on-board power supply system of highway electrification can effectively improve system efficiency and reduce energy loss, which is in line with the development trend of future transportation electrification. When applied to on-board needs, it is necessary to consider the centralized performance of the transformer and the influence of electromagnetic radiation on the steel structure in other external environments. Therefore, the four-phase transformer needs to be integrated before it can be applied to the on-board environment. Conventional transformers cannot adapt to the overall installation needs of the on-board industry and require too much space for installation. They need to be installed in a separate space, and their cooling performance cannot be well controlled when installed in isolation. Therefore, the transformer is affected by two negative factors: large harmonics and high temperature, and cannot achieve good power transmission effects.

[0003] To achieve the above objectives, the present invention provides a four-phase transformer for on-board power supply of highway electrification vehicles, which can solve the problems raised in the above background technology. Utility Model Content

[0004] The utility model adopts the following technical solutions to achieve:

[0005] A four-phase transformer for onboard power supply of a highway electrification vehicle, the transformer comprising four winding groups and multiple winding layers, a lower layer positioning block fixedly provided at the bottom of the four winding groups, the lower layer positioning block being a rectangular block, and the four winding groups being installed in a matrix arrangement with respect to the center point of the upper plane of the lower layer positioning block;

[0006] The multi-layer windings are distributed around the winding group, and the inlet and outlet sections of the multi-layer windings wound on the same winding group both have external windings.

[0007] Preferably, the winding inlet and the winding outlet of the multi-turn winding are both led out from the upper part of the winding group, and the multi-turn winding has at least two turns.

[0008] Preferably, the winding coil layer close to the peripheral side of the winding group is wound upward from one end of the incoming wire, and a section of the winding output end is coiled outside the winding input end to form an outer coil layer upward in sequence.

[0009] Preferably, an upper positioning block is connected above the winding group, and the upper positioning block is in the shape of a rectangular plate. The rectangular center point of the upper positioning block and the rectangular center point of the lower positioning block are located on the same axis. A cover plate is provided on the upper part of a single winding group, and the winding group is fixedly connected to the upper positioning block through the cover plate.

[0010] Preferably, the cover plate is provided with a plurality of snap-fitting positioning holes, and positioning piles are provided at the four corner edges of the upper positioning block, and the positioning piles cooperate with the snap-fitting positioning holes;

[0011] The plurality of clamping positioning holes on a single cover plate are arranged from the center of the cover plate toward a side of the cover plate away from the center point of the upper positioning block.

[0012] Preferably, a downward vertical fastener is connected to the center position of the upper positioning block and the lower positioning block.

[0013] Preferably, a base layer is provided at the bottom of the lower positioning block, an outer crotch guard is provided on the edge of the base layer, the outer crotch guard surrounds the circumference of the winding group, a dust cover plate is provided on the upper part of the outer crotch guard, and the external winding passes through the outlet end and out of the dust cover plate from bottom to top.

[0014] Preferably, the lower positioning block has a water cooling tank inside, a heat exchange tube is provided inside the water cooling tank, and two liquid inlets and outlets are provided on one side of the lower positioning block, and both ends of the heat exchange tube are connected to the condensing element through the liquid inlets and outlets.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] The utility model forms a new four-way structure by changing the layout of the coils and the layout position of the windings, which can better complete the integrated architecture construction, facilitate vehicle-mounted installation and use, so that it can be used as a four-way transformer for vehicle-mounted power supply. In addition, it can reduce the vehicle-mounted volume used on the vehicle body, and can more conveniently adapt to the installation space requirements of various types of vehicle bodies; the utility model studies the four-phase structure of the four-phase transformer and uses an integrated design to reduce core loss and improve product efficiency, including optimization design of coil layout, core shape, cooling method, etc.; and can improve the electromagnetic performance and heat dissipation performance of the transformer, and achieve more efficient and more stable power transmission; increase the leakage inductance, reduce the current change rate, reduce the harmonic current of the transformer, and also reduce interference, eliminating the auxiliary inductor, and the transformer's excitation inductance also realizes the function of the auxiliary inductor, thereby improving power density; through reasonable heat dissipation design and reliable protection mechanism, the safety and reliability of the four-phase transformer are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 Schematic diagram of the upper and lower structures of the winding assembly of the present invention (with a partial section);

[0019] Figure 3 This is a schematic diagram of the winding assembly structure of the utility model;

[0020] Figure 4 This is a schematic diagram of the distribution of the multi-layer winding structure of the utility model;

[0021] Figure 5 This is a schematic diagram of the internal structure of the lower positioning block of the present utility model.

[0022] In the figure: 1. Winding group; 2. Multi-layer winding; 3. Upper positioning block; 4. Lower positioning block; 5. Cover plate; 6. Base layer; 7. External winding; 8. Heat exchange tube; 9. Outer crotch guard; 10. Dust cover plate; 11. Snap-in positioning hole; 12. Positioning pile; 13. Fixture; 14. Liquid inlet and outlet; 15. Water cooling tank. DETAILED DESCRIPTION

[0023] In order to facilitate the understanding of 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, but the present invention can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the content disclosed in 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 may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly used by technicians in the technical field of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0026] The present invention will be described in further detail below with reference to the accompanying drawings.

[0027] A specific implementation of the present invention is as follows: Figure 1-4The transformer includes four winding groups 1 and multi-turn windings 2. A lower positioning block 4 is fixed at the bottom of the four winding groups 1. The lower positioning block 4 is a rectangular block. The installation positions of the four winding groups 1 are distributed in a matrix about the center point of the upper plane of the lower positioning block 4. The matrix distribution method can better integrate the main body size of the transformer device and balance the related electrical winding effects between the single winding groups 1. The center point of the matrix distribution is the center point of the upper positioning block 3 and the lower positioning block 4. The area of ​​the upper positioning block 3 and the lower positioning block 4 can be conveniently expanded within the space of the device base 6, and the equal division distance of the matrix distribution can be expanded at the same time. It is convenient to adjust the optimal spacing between the winding groups 1 while adapting to different vehicle space restrictions;

[0028] The multi-layer winding wire 2 is coiled and distributed around the circumference of the winding group 1, and the inlet and outlet sections of the multi-layer winding wire 2 coiled on the same winding group 1 are both provided with an external winding wire 7;

[0029] The winding inlet and outlet of the multi-layer winding 2 are both led out from the upper part of the winding group 1. The multi-layer winding 2 has at least two layers. The use of a multi-layer winding coil group can better reduce the harmonic current of the transformer and help improve the power density.

[0030] The winding coil layer that is tightly attached to the circumference of the winding group 1 is wound upward from one end of the incoming wire in sequence to wind out of the winding group 1, and a section of the winding outlet end is coiled on the outside of the winding inlet end to form an outer coil layer in sequence. This winding method can be roughly as follows. Taking three turns of winding as an example, see Figure 4. The middle section of the winding inlet end is displaced from the outlet end position by nearly 1 / 3 of the total length as the starting point, and the winding group 1 is coiled. The winding coil layer starts from the bottom to the top. After winding, the excess part of the incoming end extends upward, and the outlet end part is coiled upward from the initial position at the bottom to the outside of the previous coil layer. Then, after reaching the top, it is coiled downward again to the outside of the previous coil layer until the bottom is fully coiled, and the excess part extends upward. After cutting off the excess length, the electrical connection connector is put on, and then it is clamped and tightened.

[0031] Another specific embodiment of the present invention is: Please refer to Figure 2 、 Figure 3 , an upper positioning block 3 is connected above the winding group 1, and the upper positioning block 3 is a rectangular plate. The rectangular center point of the upper positioning block 3 and the rectangular center point of the lower positioning block 4 are located on the same axis. A cover plate 5 is provided on the upper part of the single winding group 1, and the winding group 1 is fixedly connected to the upper positioning block 3 through the cover plate 5;

[0032] The cover plate 5 is provided with a plurality of snap-fitting positioning holes 11, and the four corner edges of the upper positioning block 3 are provided with positioning piles 12, and the positioning piles 12 cooperate with the snap-fitting positioning holes 11;

[0033] The plurality of said snap-fitting positioning holes 11 on a single said cover plate 5 are arranged from the center of the cover plate 5 to the side of the cover plate 5 away from the center point of the upper positioning block 3;

[0034] The upper positioning block 3 and the lower positioning block 4 are connected to a downward vertical fixture 13 at the center position. The fixture 13 is used to support the installation position of the upper positioning block 3 and has a positioning effect. The connection between the upper positioning block 3 can be a sleeve connection, a sliding connection, a fixed connection, etc., which can limit the position of the upper positioning block 3. The connection between the fixture 13 and the bottom lower positioning block 4 can be a groove connection or a fixed connection. When adjusting the spacing between the winding groups 1, when the winding group 1 moves to one side (in the direction of the circle diameter with the axis of the fixture 13 as the center), the position of the winding group 1 is positioned by moving the positioning pile 12, which can appropriately adjust the spacing between the winding groups 1 and reduce the mutual influence between the winding groups 1.

[0035] The other specific implementation methods of the utility model are: Please refer to Figure 1 The bottom of the lower positioning block 4 is provided with a base layer 6, and the edge of the base layer 6 is provided with an outer crotch guard 9. The outer crotch guard 9 surrounds the peripheral side of the winding group 1. The upper part of the outer crotch guard 9 is provided with a dust cover plate 10. The external winding 7 passes through the outlet end and passes through the dust cover plate 10 from bottom to top. The dust cover plate 10 is mainly used to prevent the electrostatic adsorption effect from adsorbing dust accumulation in the sealed space of the surrounding electronic components, while ensuring the winding positioning and facilitating the connection of other vehicle-mounted components.

[0036] Please pay attention to Figure 2 、 Figure 5 The lower positioning block 4 has a water cooling groove 15 inside, and a heat exchange pipe 8 is provided inside the water cooling groove 15. Two liquid inlets and outlets 14 are provided on one side of the lower positioning block 4. The two ends of the heat exchange pipe 8 are connected to the condensing element through the liquid inlet and outlet 14. The bottom is heat exchanged by water cooling, and the temperature of the internal space of the transformer is controlled by heat transfer to reduce the impact of overheating on the transformer.

[0037] The above description of the present invention is illustrative in combination with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as such non-substantial improvements are made by adopting the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the scope of protection of the present invention.

Claims

1. A four-phase transformer for onboard power supply of a highway electrification vehicle, characterized by: The transformer comprises four winding groups (1) and a multi-layer winding (2); a lower layer positioning block (4) is fixedly provided at the bottom of the four winding groups (1); the lower layer positioning block (4) is a rectangular block; the installation positions of the four winding groups (1) are distributed in a matrix with respect to the center point of the upper plane of the lower layer positioning block (4); The multi-layer winding (2) is coiled and distributed around the circumference of the winding group (1), and both the inlet and outlet sections of the multi-layer winding (2) coiled on the same winding group (1) have external windings (7).

2. The four-phase transformer for onboard power supply of a highway electrification vehicle according to claim 1, characterized in that: The winding inlet and outlet of the multi-layer winding (2) are both led out from the upper part of the winding group (1), and the multi-layer winding (2) has at least two layers.

3. The four-phase transformer for on-board power supply of a highway electrification vehicle according to claim 2, characterized in that: The winding coil layer close to the peripheral side of the winding group (1) is wound upward from one end of the incoming wire and out of the winding group (1) in sequence, and a section of the winding output end is coiled outside the winding input end and upwards to form an outer coil layer in sequence.

4. The four-phase transformer for on-board power supply of a highway electrification vehicle according to claim 1, characterized in that: An upper positioning block (3) is connected above the winding group (1), and the upper positioning block (3) is in the shape of a rectangular plate. The rectangular center point of the upper positioning block (3) and the rectangular center point of the lower positioning block (4) are located on the same axis. A cover plate (5) is provided on the upper part of a single winding group (1), and the winding group (1) is fixedly connected to the upper positioning block (3) through the cover plate (5).

5. The four-phase transformer for on-board power supply of highway electrification according to claim 4, characterized in that: The cover plate (5) is provided with a plurality of snap-fit ​​positioning holes (11), and positioning piles (12) are provided at the four corner edges of the upper positioning block (3), and the positioning piles (12) cooperate with the snap-fit ​​positioning holes (11); The plurality of snap-fit ​​positioning holes (11) on a single cover plate (5) are arranged from the center of the cover plate (5) toward a side of the cover plate (5) away from the center point of the upper positioning block (3).

6. The four-phase transformer for on-board power supply of highway electrification according to claim 4, characterized in that: A downward vertical fixing piece (13) is connected at the center of the upper positioning block (3) and the lower positioning block (4).

7. The four-phase transformer for on-board power supply of highway electrification according to claim 1, characterized in that: A base layer (6) is provided at the bottom of the lower positioning block (4), an outer crotch guard (9) is provided on the edge of the base layer (6), the outer crotch guard (9) surrounds the circumference of the winding group (1), a dust cover plate (10) is provided on the upper part of the outer crotch guard (9), and the external winding (7) passes through the outlet end and passes through the dust cover plate (10) from bottom to top.

8. The four-phase transformer for on-board power supply of highway electrification according to claim 1, characterized in that: The lower positioning block (4) has a water cooling groove (15) inside, a heat exchange tube (8) is provided inside the water cooling groove (15), and two liquid inlets and outlets (14) are provided on one side of the lower positioning block (4), and both ends of the heat exchange tube (8) are connected to the condensing element through the liquid inlet and outlet (14).

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