Radiator for charger and DC-DC converter

Abstract

The utility model discloses a charger and a radiator of a DC-DC converter, comprising a heat radiation assembly which comprises a first harmonica-shaped tube used for heat radiation of the charger and a second harmonica-shaped tube used for heat radiation of the DC-DC converter, and the first harmonica-shaped tube and the second harmonica-shaped tube are arranged at intervals in a linear manner. The charger is located on the front surface of the first harmonica-shaped tube, the circuit board connected with the charger is located on the back surface of the first harmonica-shaped tube, the DC-DC converter is located on the front surface of the second harmonica-shaped tube, and the circuit board connected with the DC-DC converter is located on the back surface of the second harmonica-shaped tube. And the liquid supply assembly comprises a plurality of collecting pipes, and the collecting pipes are fixed to the side face of the heat dissipation assembly, communicate with the heat dissipation assembly and are used for inputting refrigerating fluid into the heat dissipation assembly. Thus, the first harmonica-shaped tube simultaneously dissipates heat of the charger and the circuit board thereof, the second harmonica-shaped tube simultaneously dissipates heat of the DC-DC converter and the circuit board thereof, water cooling heat dissipation is realized, the heat dissipation area is large, the heat dissipation speed is high, and the problem that the circuit board is damaged due to temperature rise of the charger and the DC-DC converter is avoided.

Description

Technical Field

[0001] This utility model relates to the field of new energy vehicle technology, and in particular to a heat sink for a charger and a DC-DC converter. Background Technology

[0002] In the field of new energy vehicles, electric vehicles have a significant advantage, mainly because electricity is a relatively inexpensive and readily available energy source. The charger, permanently installed on an electric vehicle, has the capability to safely and automatically fully charge the vehicle's battery. Based on data provided by the battery management system, the charger can dynamically adjust charging current or voltage parameters and execute corresponding actions to complete the charging process. However, the charger's temperature rises during operation; if heat dissipation is not timely, it can damage the charger and its circuit boards.

[0003] An electric vehicle DC-DC converter, also known as an electric vehicle DC-DC voltage converter, is a device that converts the higher DC voltage of the electric vehicle's battery into a 12V DC voltage. Since vehicle accessories such as headlights, wipers, fans, radios, airbags, power windows, and various instruments all use a standard 12V DC voltage, while electric vehicle batteries typically have a higher voltage (48V-90V), a DC-DC converter is necessary to transform the battery's higher DC voltage into a 12V DC output to meet the standard DC voltage supply requirements of these accessories. However, electric vehicle DC-DC converters have a high output power, resulting in significant heat generation. The longer the vehicle is driven, the higher the temperature rise of the DC-DC converter. Without proper cooling, the converter's temperature will become excessively high, affecting electrical performance and potentially causing the entire circuit to burn out.

[0004] Currently, the heat dissipation methods for chargers and DC-DC converters generally involve blowing air onto their surfaces. However, this method is slow and incomplete, resulting in low heat dissipation efficiency and potentially causing circuit damage due to high temperatures. Utility Model Content

[0005] To address the technical problems existing in the background art, this utility model proposes a heat sink for a charger and a DC-DC converter.

[0006] The present invention discloses a heat sink for a charger and a DC-DC converter, comprising:

[0007] The heat dissipation assembly includes a first harmonica tube for dissipating heat for a charger and a second harmonica tube for dissipating heat for a DC-DC converter. The first harmonica tube and the second harmonica tube are arranged linearly at intervals. The charger is located on the front surface of the first harmonica tube and the circuit board connected thereto is located on the back surface of the first harmonica tube. The DC-DC converter is located on the front surface of the second harmonica tube and the circuit board connected thereto is located on the back surface of the second harmonica tube.

[0008] The liquid supply assembly includes multiple manifolds, which are fixed to the side of the heat dissipation assembly, communicate with the heat dissipation assembly, and are used to supply coolant into the heat dissipation assembly.

[0009] Preferably, the first harmonica tube is provided with a plurality of mounting holes I, and the input / output connector of the circuit board of the charger is connected to the charger through the plurality of mounting holes I. The second harmonica tube is provided with a plurality of mounting holes II, and the input / output connector of the circuit board of the DC-DC converter is connected to the DC-DC converter through the plurality of mounting holes II.

[0010] Preferably, the front surface of the first harmonica tube is provided with two baffles I, the width of the baffles I being the same as the width of the first harmonica tube, and the two baffles I are arranged around the charger. The front surface of the second harmonica tube is provided with two baffles II, the width of the baffles II being less than the width of the second harmonica tube, and the two baffles II are arranged around the DC-DC converter.

[0011] Preferably, the liquid supply assembly includes a manifold I, a manifold II, and a manifold III. The manifold I is connected to a coolant source and is located on the first side of the first harmonica tube and the second harmonica tube. The manifold II is located on the second side of the first harmonica tube and the second harmonica tube. The manifold III is located between the manifold I and the first side of the second harmonica tube. The manifold I is connected to the first side of the first harmonica tube. The manifold II is connected to the second side of both the first harmonica tube and the second harmonica tube. The manifold III is connected to the first side of the second harmonica tube, and the outlet of the manifold III is set as a coolant outlet.

[0012] Preferably, the inlet end of the manifold I and the outlet end of the manifold III are integrated and fixed with a connecting flange. The connecting flange is provided with an inlet and an outlet. The inlet is connected to the inlet of the manifold I, and the outlet is connected to the outlet of the manifold III.

[0013] Preferably, the second sides of the manifold II and the first and second harmonica tubes are fixed by brazing after the installation of welding rings.

[0014] In summary, this utility model has the following beneficial effects: by placing the charger and its circuit board on the front and back surfaces of the first harmonica tube respectively, and placing the DC-DC converter and its circuit board on the front and back surfaces of the second harmonica tube respectively, the contact area is large. Then, by filling the first and second harmonica tubes with coolant through the liquid supply assembly, water cooling is achieved. The first harmonica tube dissipates heat from the charger and its circuit board at the same time, and the second harmonica tube dissipates heat from the DC-DC converter and its circuit board at the same time. Moreover, the heat dissipation area is large and the heat dissipation speed is fast, avoiding the problem of circuit board damage caused by the overheating of the charger and the DC-DC converter.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] Figure 1 The three-dimensional heat sink of the charger and DC-DC converter according to an embodiment of this utility model. Figure 1 ;

[0017] Figure 2 The three-dimensional heat sink of the charger and DC-DC converter according to an embodiment of this utility model. Figure 2 ;

[0018] Figure 3 This is a front view of the heat sink of the charger and DC-DC converter according to an embodiment of the present utility model;

[0019] Figure 4 This is a rear view of the heat sink of the charger and DC-DC converter according to an embodiment of the present invention.

[0020] In the picture:

[0021] 1. First harmonica tube; 11. Mounting hole I; 12. Baffle I; 2. Second harmonica tube; 21. Mounting hole II; 22. Baffle II; 3. Manifold I; 4. Manifold II; 5. Manifold III; 6. Connecting flange; 61. Inlet; 62. Outlet; 7. Welding ring; 8. Aluminum plate. Detailed Implementation

[0022] The embodiments of this utility model are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar symbols denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0023] like Figure 1-4 As shown, the heat sink for a charger and DC-DC converter proposed in this embodiment includes:

[0024] The heat dissipation assembly includes a first harmonica tube 1 for dissipating heat from the charger and a second harmonica tube 2 for dissipating heat from the DC-DC converter. The first harmonica tube 1 and the second harmonica tube 2 are arranged linearly at intervals. The charger is located on the front surface of the first harmonica tube 1 and the circuit board connected to it is located on the back surface of the first harmonica tube 1. The DC-DC converter is located on the front surface of the second harmonica tube 2 and the circuit board connected to it is located on the back surface of the second harmonica tube 2.

[0025] Specifically, the first harmonica tube 1 is provided with multiple mounting holes I11, and the input / output connector of the charger circuit board is connected to the charger through the multiple mounting holes I11. The second harmonica tube 2 is provided with multiple mounting holes II21, and the input / output connector of the DC-DC converter circuit board is connected to the DC-DC converter through the multiple mounting holes II21.

[0026] The liquid supply assembly includes multiple manifolds, which are fixed to the side of the heat dissipation assembly, communicate with the heat dissipation assembly, and are used to supply coolant into the heat dissipation assembly.

[0027] In this way, by placing the charger and its circuit board on the front and back surfaces of the first harmonica tube 1, and the DC-DC converter and its circuit board on the front and back surfaces of the second harmonica tube 2, the contact area is large. Then, coolant is filled into the first harmonica tube 1 and the second harmonica tube 2 through the liquid supply assembly for water cooling. The first harmonica tube 1 dissipates heat from the charger and its circuit board at the same time, and the second harmonica tube 2 dissipates heat from the DC-DC converter and its circuit board at the same time. Moreover, the heat dissipation area is large and the heat dissipation speed is fast, avoiding the problem of circuit board damage caused by the overheating of the charger and the DC-DC converter.

[0028] Furthermore, the front surface of the first harmonica tube 1 is provided with two baffles I 12, the width of which is the same as the width of the first harmonica tube 1. The two baffles I 12 are arranged around the charger. The front surface of the second harmonica tube 2 is provided with two baffles II 22, the width of which is smaller than the width of the second harmonica tube 2. The two baffles II 22 are arranged around the DC-DC converter. In this way, the charger and the DC-DC converter can be protected.

[0029] It should be noted that the liquid supply assembly can be located on the upper part of the baffle wall I 12 and the baffle wall II 22. Aluminum plates 8 are installed between the liquid supply assembly and the first harmonica tube 1, and between the liquid supply assembly and the second harmonica tube 2. In this way, the aluminum plates 8 and the baffle wall I 12 can form a protective space for the charger for the first harmonica tube 1, and the aluminum plates 8 and the baffle wall II 22 can form a protective space for the DC-DC converter for the second harmonica tube 2.

[0030] In this embodiment, as Figure 1As shown, the coolant supply assembly includes manifold I3, manifold II4, and manifold III5. Manifold I3 is connected to the coolant source and is located on the first side of the first harmonica tube 1 and the second harmonica tube 2. Manifold II4 is located on the second side of the first harmonica tube 1 and the second harmonica tube 2. Manifold III5 is located between the first side of manifold I3 and the first side of the second harmonica tube 2. Manifold I3 is connected to the first side of the first harmonica tube 1. Manifold II4 is connected to the second side of both the first harmonica tube 1 and the second side of the second harmonica tube 2. Manifold III5 is connected to the first side of the second harmonica tube 2, and the outlet of manifold III5 is set as the coolant outlet.

[0031] It should be noted that plugs are provided at the outlet end of manifold I3, both ends of manifold II4, and one end of manifold III5 to ensure that the coolant flows along the set route.

[0032] Furthermore, a connecting flange 6 is integrated and fixed at the inlet end of manifold I3 and the outlet end of manifold III5. The connecting flange 6 is provided with an inlet 61 and an outlet 62. The inlet 61 is connected to the inlet of manifold I3, and the outlet 62 is connected to the outlet of manifold III5.

[0033] The coolant flow path is as follows: inlet 61 - manifold I3 - first harmonica tube 1 - manifold II4 - second harmonica tube 2 - manifold III5 - outlet 62, and so on, resulting in fast heat dissipation.

[0034] It should be noted that the contact points of manifold I3 with the first harmonica tube 1 and the first harmonica tube 2 on their respective first sides, the contact points of manifold II4 with the first harmonica tube 1 and the second harmonica tube 2 on their respective second sides, and the contact points of the ends of manifold II4 and manifold III5 with the connecting flange 6 are all fixed by brazing after the installation of welding rings 7. This not only prevents leakage but also ensures the stability of the radiator structure.

[0035] It should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0037] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0039] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A heat sink for a charger and a DC-DC converter, characterized in that, include: The heat dissipation assembly includes a first harmonica tube for dissipating heat for a charger and a second harmonica tube for dissipating heat for a DC-DC converter. The first harmonica tube and the second harmonica tube are arranged linearly at intervals. The charger is located on the front surface of the first harmonica tube and the circuit board connected thereto is located on the back surface of the first harmonica tube. The DC-DC converter is located on the front surface of the second harmonica tube and the circuit board connected thereto is located on the back surface of the second harmonica tube. The liquid supply assembly includes multiple manifolds, which are fixed to the side of the heat dissipation assembly, communicate with the heat dissipation assembly, and are used to supply coolant into the heat dissipation assembly.

2. The heat sink for a charger and a DC-DC converter according to claim 1, characterized by, The first harmonica tube has multiple mounting holes I, and the input / output connector of the circuit board of the charger is connected to the charger through the multiple mounting holes I. The second harmonica tube has multiple mounting holes II, and the input / output connector of the circuit board of the DC-DC converter is connected to the DC-DC converter through the multiple mounting holes II.

3. The heat sink for a charger and a DC-DC converter according to claim 2, characterized by, The front surface of the first harmonica tube is provided with two baffles I, the width of which is the same as the width of the first harmonica tube, and the two baffles I are arranged around the charger. The front surface of the second harmonica tube is provided with two baffles II, the width of which is less than the width of the second harmonica tube, and the two baffles II are arranged around the DC-DC converter.

4. The heat sink for a charger and a DC-DC converter according to claim 2, characterized by, The liquid supply assembly includes manifold I, manifold II, and manifold III. Manifold I is connected to the coolant source and is located on the first side of the first harmonica tube and the second harmonica tube. Manifold II is located on the second side of the first harmonica tube and the second harmonica tube. Manifold III is located between manifold I and the first side of the second harmonica tube. Manifold I is connected to the first side of the first harmonica tube. Manifold II is connected to the second side of both the first harmonica tube and the second harmonica tube. Manifold III is connected to the first side of the second harmonica tube, and the outlet of manifold III is set as the coolant outlet.

5. The heat sink for a charger and a DC-DC converter according to claim 4, characterized by The inlet end of the manifold I and the outlet end of the manifold III are integrated and fixed with a connecting flange. The connecting flange is provided with a liquid inlet and a liquid outlet. The liquid inlet is connected to the inlet of the manifold I, and the liquid outlet is connected to the outlet of the manifold III.

6. The heat sink for a charger and a DC-DC converter according to claim 4, characterized by, The second sides of the manifold II and the first and second harmonica tubes are all fixed by brazing after the installation of welding rings.

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