Alternating current and direct current integrated power supply with high stability

Abstract

An AC / DC integrated power supply with strong stability comprises an AC / DC assembly, a DC / DC assembly and a shell, a plurality of heat dissipation holes are formed in the shell, an intermediate plate is fixedly arranged in the shell, the AC / DC assembly and the DC / DC assembly are fixedly arranged on the two sides of the intermediate plate respectively, signal interference of the AC / DC assembly and the DC / DC assembly can be reduced, and the stability of the power supply is improved. Heat conduction mud is filled between heating devices, close to the side portion of the shell, in the AC / DC assembly and the DC / DC assembly and the shell, and heat dissipation is assisted through the shell. And the radiator is arranged at the bottom of the shell and is in contact with heating devices, close to the bottom of the shell, in the AC / DC assembly and the DC / DC assembly, so that the heat dissipation area is increased, and the heat dissipation effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy power supply, in particular to an AC / DC integrated power supply with strong stability. Background Art

[0002] During the charging process of new energy vehicles, if the power grid suddenly loses power, the control system BMS will suddenly lose power and cause serious failures. Therefore, it is necessary to ensure that the auxiliary power supply of the energy storage system can still work normally when the power grid loses power, that is, the auxiliary power supply can draw power from the power grid and the high-voltage battery at the same time, and be isolated and converted into low-voltage output.

[0003] Currently, an AC / DC component and a DC / DC component are often used. The AC / DC component draws power from the power grid, and the DC / DC component draws power from the high-voltage battery. The AC / DC component and the DC / DC component are output through a power supply selection device (PSD) to supply power to the energy storage system. When designing, the output voltage of the AC / DC component is slightly higher than that of the DC / DC component to ensure that the PSD preferentially selects the AC / DC component to supply power, and immediately switches to the DC / DC component to supply power when the power grid loses power.

[0004] In the prior art, most of the AC / DC component and the DC / DC component adopt a split design, that is, the two are independent of each other. Because if the AC / DC component and the DC / DC component are used together, there will be problems of signal interference, and at the same time, the overall heat generation of the components is large, resulting in poor heat dissipation effect. However, the split design also has disadvantages such as large equipment volume and unfavorable wiring management. Summary of the Utility Model

[0005] In order to solve the deficiencies of the prior art, the utility model provides an AC / DC integrated power supply with strong stability, so that the AC / DC component and the DC / DC component will not interfere with each other when used together, and at the same time, the heat dissipation effect is guaranteed.

[0006] The technical solution adopted by the utility model to solve the above technical problems is: an AC / DC integrated power supply with strong stability, including an AC / DC component, a DC / DC component and a housing. A plurality of heat dissipation holes are provided on the housing. An intermediate plate is fixedly arranged inside the housing. The AC / DC component and the DC / DC component are respectively fixedly arranged on both sides of the intermediate plate. Thermal paste is filled between the heat generating devices of the AC / DC component and the DC / DC component close to the side of the housing and the housing. A radiator is arranged at the bottom of the housing, and the radiator is in contact with the heat generating devices of the AC / DC component and the DC / DC component close to the bottom of the housing.

[0007] As a further optimization of an AC / DC integrated power supply with strong stability in the utility model: The housing includes a U-shaped plate, a connecting plate, and an L-shaped side plate. The U-shaped plate, the connecting plate, and the L-shaped side plate are spliced together to form the housing. A plurality of the heat dissipation holes are opened on two sides of the U-shaped plate, and the middle plate is detachably connected between the two sides of the U-shaped plate.

[0008] As a further optimization of an AC / DC integrated power supply with strong stability in the utility model: The middle plate is located at the middle position of the bottom of the U-shaped plate.

[0009] As a further optimization of an AC / DC integrated power supply with strong stability in the utility model: The heating devices near the side of the housing are all in contact with the L-shaped side plate through heat-conducting mud. The heating devices near the bottom of the housing are all in contact with the radiator, and the radiator is in contact with the L-shaped side plate.

[0010] As a further optimization of an AC / DC integrated power supply with strong stability in the utility model: The material of the connecting plate is aluminum alloy.

[0011] As a further optimization of an AC / DC integrated power supply with strong stability in the utility model: The AC / DC module and the DC / DC module include an EMI board, and the EMI board is detachably arranged inside the housing.

[0012] As a further optimization of an AC / DC integrated power supply with strong stability in the utility model: A plurality of jacks are arranged on both the connecting plate and the L-shaped side plate, and convex platforms corresponding to the jacks one by one are arranged on the side of the EMI board.

[0013] As a further optimization of an AC / DC integrated power supply with strong stability in the utility model: The transistors in the heating devices are fixedly arranged on the radiator through snap rings or pressing plates.

[0014] As a further optimization of an AC / DC integrated power supply with strong stability in the utility model: A rail buckle is fixedly arranged at the bottom of the housing, and the rail buckle can be fixedly connected with external equipment.

[0015] Beneficial effects: The AC / DC module and the DC / DC module of the present utility model are respectively fixedly arranged on both sides of the middle plate, reducing signal interference and improving the power supply stability;

[0016] Heat-conducting mud is filled between the heating devices near the side of the housing in the AC / DC module and the DC / DC module and the housing, and heat is dissipated through the housing;

[0017] A radiator is arranged at the bottom of the housing, and the radiator is in contact with the heating devices near the bottom of the housing in the AC / DC module and the DC / DC module, increasing the heat dissipation area and improving the heat dissipation effect. Description of the Drawings

[0018] Figure 1 is a schematic structural view of the present utility model;

[0019] Reference numerals in the figure: 1. AC / DC component, 2. DC / DC component, 3. U-shaped plate, 4. intermediate plate, 5. connecting plate, 6. L-shaped side plate, 7. guide rail buckle, 8. thermal paste, 9. radiator. Specific embodiments

[0020] The technical solutions of the present utility model will be further elaborated in detail below in conjunction with specific embodiments. For parts that are not detailedly described and disclosed in the following embodiments of the present utility model, they should all be understood as the prior art known or should be known to those skilled in the art, such as the model and specific model of the guide rail buckle 7, the model of the radiator 9, the specific material and working principle of the thermal paste 8, the specific structures and models of the snap ring and the pressing plate, etc.

[0021] An AC / DC integrated power supply with strong stability, as Figure 1 shown, includes an AC / DC component 1, a DC / DC component 2 and a housing. A plurality of heat dissipation holes are provided on the housing, and wiring holes are also arranged. An intermediate plate 4 is fixedly arranged inside the housing. The AC / DC component 1 and the DC / DC component 2 are respectively fixedly arranged on both sides of the intermediate plate 4, separating the AC / DC component 1 and the DC / DC component 2, shielding the interference signals on both sides and avoiding mutual interference. Thermal paste 8 is filled between the heat generating devices near the side of the housing in the AC / DC component 1 and the DC / DC component 2 and the housing. The heat generated by the heat generating devices located on the side of the housing is transmitted to the housing through the thermal paste 8 for auxiliary heat dissipation. A radiator 9 is arranged at the bottom of the housing. The radiator 9 is in contact with the heat generating devices near the bottom of the housing in the AC / DC component 1 and the DC / DC component 2, increasing the heat dissipation area, and finally the heat is dissipated into the air.

[0022] The housing includes a U-shaped plate 3, a connecting plate 5 and an L-shaped side plate 6. The U-shaped plate 3, the connecting plate 5 and the L-shaped side plate 6 are spliced with each other to form the housing. A part of the L-shaped side plate 6 is vertical and a part serves as the bottom of the housing. The vertical part is parallel to the connecting plate 5. The heat generating devices located on the side of the housing in the AC / DC component 1 and the DC / DC component 2 are located on the part of the L-shaped side plate 6 parallel to the connecting plate 5 and the connecting plate 5. The heat generating devices located at the bottom of the housing in the AC / DC component 1 and the DC / DC component 2 are located on the part of the L-shaped side plate 6 serving as the bottom of the housing.

[0023] A number of the heat dissipation holes are provided in two side portions of the U-shaped plate 3, and the intermediate plate 4 is detachably connected between the two side portions of the U-shaped plate 3. The U-shaped plate 3 is made of high-strength steel, which reduces the weight, meets the function of ventilation and heat dissipation, and at the same time ensures the structural strength. The intermediate plate 4 is located at the middle position of the bottom of the U-shaped plate 3, and the edge of the intermediate plate 4 is connected to the central position of the two side portions of the U-shaped plate 3, which improves the strength of the U-shaped plate 3. At the same time, screw holes are provided on the U-shaped plate 3, and the screw holes on the two side portions are symmetrically arranged, which reduces the influence on the heat dissipation duct. The connecting plate 5 is made of aluminum alloy, which ensures the strength and plays a role in heat dissipation. Since the AC / DC component 1 is in a working state more often than the DC / DC component 2 during the operation of the power supply, and generates a large amount of heat during operation, the AC / DC component 1 and the bottom of the power supply are combined together to increase the heat dissipation area and improve the heat dissipation efficiency. The power supply is a conventional technology and will not be elaborated here. The radiator 9 is fixed to the L-shaped side plate 6 by bolts.

[0024] The transistor in the heating device is fixedly arranged on the radiator 9 by a snap ring or a pressing plate. The heating device also includes a transformer, a main board and an attached power board. The transformer, the main board and the attached power board are conventional technologies in the art and will not be elaborated here. Thermal paste 8 is provided on the transformer, the main board, the transistor and the attached power board. The heating devices located on the side portion of the housing in the AC / DC component 1 and the DC / DC component 2 are all in contact with the L-shaped side plate 6 through the thermal paste 8. The heating devices located on the side portion of the housing, such as the transformer and the attached power board, transfer their heat to the part of the L-shaped side plate 6 parallel to the connecting plate 5, and then dissipate it into the air; the heating devices located on the bottom of the housing in the AC / DC component 1 and the DC / DC component 2 are all in contact with the radiator 9, and the radiator 9 is in contact with the L-shaped side plate 6. Among them, the radiator 9 can be made of aluminum plate. The heating device located on the bottom of the housing, such as the transistor 10, the radiator 9 transfers the heat of the transistor 10 to the part of the L-shaped side plate 6 as the bottom of the housing, and then dissipates it into the air. The AC / DC component 1 and the DC / DC component 2 include an EMI board, and the EMI board is detachably arranged inside the housing. To facilitate the connection between the EMI board and the connecting plate 5 and the L-shaped side plate 6, a plurality of jacks are provided on both the connecting plate 5 and the L-shaped side plate 6. The side portion of the EMI board is provided with bosses corresponding to the jacks one by one, and plug connectors are fixed at both ends of the EMI board. In this way, the firmness of the EMI board is enhanced when the plug connectors are inserted and pulled out. To facilitate the mating connection between the housing and external devices, a rail buckle 7 is fixedly arranged at the bottom of the housing, and the rail buckle 7 can be fixedly connected to external devices or connected to the external devices by means of screws.

[0025] The structure of the utility model is simple and the operation is convenient. During assembly, first fix the AC / DC component 1 and the DC / DC component 2 on both sides of the middle plate 4 respectively, and then fix both sides of the middle plate 4 on the two side parts of the U-shaped plate 3. Among them, the transistors 10 at the bottom of the AC / DC component 1 and the DC / DC component 2 are pre-welded on the PCB boards of the AC / DC component 1 and the DC / DC component 2 by using a tooling, the transistors 10 are in contact with the radiator 9 at the bottom, and the part of the L-shaped side plate 6 at the bottom is fixed to the radiator 9. Then, according to the need, thermal paste 8 is laid on the surfaces of some heat-generating devices, so that the heat-generating devices and the L-shaped side plate 6 or the connecting plate 5 are filled with thermal paste 8, the connection between the U-shaped plate 3, the L-shaped side plate 6 and the connecting plate 5 is completed, and finally the part of the L-shaped side plate 6 at the bottom is connected to an external device through a rail buckle 7 or a screw.

[0026] The above description of the disclosed embodiments enables those skilled in the art to implement or use the utility model. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the utility model. Therefore, the utility model will not be limited to the embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An integrated AC-DC power supply with strong stability, characterized in that: It includes an AC / DC component (1), a DC / DC component (2) and a housing. A plurality of heat dissipation holes are provided on the housing. An intermediate plate (4) is fixedly arranged inside the housing. The AC / DC component (1) and the DC / DC component (2) are respectively fixedly arranged on both sides of the intermediate plate (4). Thermal paste (8) is filled between the heat generating devices near the side of the housing and the housing. A radiator (9) is arranged at the bottom of the housing. The radiator (9) is in contact with the heat generating devices near the bottom of the housing among the AC / DC component (1) and the DC / DC component (2).

2. The integrated AC-DC power supply with strong stability according to claim 1, characterized in that: The housing includes a U-shaped plate (3), a connecting plate (5) and an L-shaped side plate (6). The U-shaped plate (3), the connecting plate (5) and the L-shaped side plate (6) are spliced with each other to form the housing. A plurality of the heat dissipation holes are provided on both sides of the U-shaped plate (3). The intermediate plate (4) is detachably connected between both sides of the U-shaped plate (3).

3. The integrated AC / DC power supply with strong stability according to claim 2, characterized in that: The intermediate plate (4) is located at the middle position of the bottom of the U-shaped plate (3).

4. The integrated AC / DC power supply with strong stability according to claim 2, characterized in that: The heat generating devices near the side of the housing are all in contact with the L-shaped side plate (6) through the thermal paste (8). The heat generating devices near the bottom of the housing are all in contact with the radiator (9), and the radiator (9) is in contact with the L-shaped side plate (6).

5. The integrated AC / DC power supply with strong stability according to claim 2, characterized in that: The material of the connecting plate (5) is aluminum alloy.

6. The integrated AC-DC power supply with strong stability according to claim 2, characterized in that: Both the AC / DC component (1) and the DC / DC component (2) include an EMI board. The EMI board is detachably arranged inside the housing.

7. The integrated AC / DC power supply with strong stability according to claim 6, characterized in that: A plurality of jacks are provided on both the connecting plate (5) and the L-shaped side plate (6). A boss corresponding to the jack one by one is arranged on the side of the EMI board.

8. The integrated AC-DC power supply with strong stability according to claim 1, characterized in that: The transistor (10) in the heat generating device is fixedly arranged on the radiator (9) through a snap ring or a pressing plate.

9. The integrated AC / DC power supply with strong stability according to claim 1, characterized in that: A rail buckle (7) is fixedly arranged at the bottom of the housing. The rail buckle (7) can be fixedly connected to an external device.

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