Vehicle-mounted DC-DC power supply distribution box

Abstract

The utility model belongs to new energy automobile technical field discloses a kind of vehicle-mounted DC-DC power distribution box, including mutually connected box and face cover, the box is internally provided with containing cavity, the containing cavity is used to accommodate electrical element, the sidewall of the box is provided with several sockets and low-voltage connector, the bottom of the box is provided with heat dissipation component, the heat dissipation component includes heat dissipation fin and heat dissipation fan, multiple heat dissipation fins are side by side arranged in the bottom of the box, the heat dissipation fan is fixed in the bottom of the box, the heat dissipation fan is arranged between the heat dissipation fin, by being provided with heat dissipation fin in the bottom of power distribution box, electrical element in containing cavity can be provided with timely heat dissipation, simultaneously still being provided with heat dissipation fan between heat dissipation fin, power distribution box and its heat dissipation fin gathered heat can be discharged, prevent heat accumulation, to reduce the overall temperature of product.

Description

Technical Field

[0001] This utility model relates to the field of new energy vehicle technology, and in particular to an on-board DC-DC power distribution box. Background Technology

[0002] The core energy of new energy vehicles is mainly provided by battery systems, and their energy transmission relies on complex high-voltage electrical systems. However, existing new energy vehicle power distribution boxes generally suffer from defects such as unreasonable structural layout and limited heat dissipation methods. Furthermore, the DC-DC modules typically generate a large amount of heat during operation, leading to significant heat dissipation problems. When heat dissipation issues cannot be effectively resolved, the operating efficiency of the electrical components within the power distribution box will be affected to some extent. Utility Model Content

[0003] Based on this, this invention proposes several embodiments of an on-board DC-DC power distribution box, wherein at least one embodiment can overcome the problems of unreasonable structural layout and single heat dissipation method of the on-board DC-DC power distribution box.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] This utility model provides a vehicle-mounted DC-DC power distribution box, including:

[0006] The device includes an interconnected housing and a cover. The housing has an internal cavity for housing electrical components. The side walls of the housing are equipped with several sockets and low-voltage connectors.

[0007] A heat dissipation assembly is provided at the bottom of the box. The heat dissipation assembly includes heat dissipation fins and a heat dissipation fan. Multiple heat dissipation fins are arranged side by side at the bottom of the box. The heat dissipation fan is fixed at the bottom of the box and is disposed between the heat dissipation fins.

[0008] Preferably, a venting component is provided on the side of the box body. The venting component includes a venting valve and a sealing seat. The sealing seat is fixed to the side of the box body and has a venting hole. The venting valve passes through the venting hole and is threadedly connected to the sealing seat.

[0009] Preferably, the housing is provided with a first mounting base, which is concave and has a rectangular through hole in the middle. Part of the socket passes through the rectangular through hole, and the first mounting base supports the socket.

[0010] Preferably, the housing is provided with a second mounting base, which is rectangular in shape and has a circular through hole in the middle. The low-pressure connector passes through the circular through hole, and the second mounting base supports the low-pressure connector.

[0011] Preferably, a third mounting base is disposed inside the housing. The third mounting base is rectangular and has a convex through hole in the middle. Another part of the socket passes through the convex through hole, and the third mounting base supports the socket.

[0012] Preferably, the inner bottom of the box is provided with a first groove and a second groove, which are arranged diagonally. The first groove and the second groove are respectively used to accommodate relays of different specifications.

[0013] Preferably, the inner bottom of the box is provided with a third groove, which is composed of two rectangular bodies joined together, and the third groove is used to accommodate the ceramic chip of the MOS tube.

[0014] Preferably, the third groove is disposed on the back of the cooling fan.

[0015] Preferably, the inner bottom of the box is provided with a plurality of fixing posts, which are used to fix electrical components.

[0016] Preferably, the plurality of heat dissipation fins are arranged in parallel, a cavity is provided between the plurality of heat dissipation fins, the cooling fan is fixed in the cavity, and a fan cover is provided on the top of the cooling fan.

[0017] The beneficial effects of this utility model are as follows: by setting heat dissipation fins at the bottom of the power distribution box, timely heat dissipation can be provided for the electrical components inside the cavity. At the same time, a cooling fan is set between the heat dissipation fins to dissipate the heat accumulated in the power distribution box and its heat dissipation fins, preventing heat accumulation and thus reducing the overall temperature of the product. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the vehicle-mounted DC-DC power distribution box provided in this embodiment of the utility model;

[0019] Figure 2 This is another structural schematic diagram of the vehicle-mounted DC-DC power distribution box provided in this embodiment of the utility model;

[0020] Figure 3 This is a schematic diagram of the heat dissipation component structure of the vehicle-mounted DC-DC power distribution box provided in this embodiment of the utility model;

[0021] Figure 4This is a schematic diagram of the internal structure of the vehicle-mounted DC-DC power distribution box provided in this embodiment of the utility model;

[0022] Figure 5 This is another schematic diagram of the internal structure of the vehicle-mounted DC-DC power distribution box provided in this embodiment of the utility model. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0024] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" 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 or an electrical connection; 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0026] In the description of this embodiment, the terms "upper," "lower," "right," and "left," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0027] like Figures 1 to 5As shown, this utility model provides a vehicle-mounted DC-DC power distribution box, comprising a box body 100 and a cover 200 connected to each other. The box body 100 has an internal receiving cavity 101 for accommodating electrical components (not shown). The side wall of the box body 100 is provided with a plurality of sockets 300 and low-voltage connectors 400. The connection between the box body 100 and the cover 200 can be either screwed or snap-fit.

[0028] A heat dissipation assembly 500 is provided at the bottom of the housing 100. The heat dissipation assembly 500 includes heat dissipation fins 510 and cooling fans 520. Multiple heat dissipation fins 510 are arranged side by side at the bottom of the housing 100, and the cooling fans 520 are fixed to the bottom of the housing 100 and positioned between the heat dissipation fins 510. By combining the two heat dissipation designs of cooling fans 520 and heat dissipation fins 510, the internal temperature of the housing 100 can be effectively reduced when the housing 100 and the cover 200 are connected, preventing the high temperature inside the housing 100 from affecting the normal operation of electrical components. By setting heat dissipation fins 510 at the bottom of the housing 100, timely heat dissipation can be provided for the electrical components in the housing cavity 101. At the same time, the cooling fans 520 are also arranged between the heat dissipation fins 510. The reasonable structural layout can dissipate the heat accumulated in the distribution box and its heat dissipation fins 510, prevent heat accumulation, and thus reduce the overall temperature of the product.

[0029] Specifically, in some embodiments of this novel invention, such as Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, a venting assembly 600 is provided on the side of the box 100. The venting assembly 600 includes a venting valve 610 and a sealing seat 620. The sealing seat 620 is fixed to the side of the box 100 and has a venting hole 621. The venting valve 610 passes through the venting hole 621 and is threadedly connected to the sealing seat 620. When the internal air pressure of the box 100 is too high, the pressure can be released by unscrewing the venting valve 610 to achieve air pressure balance inside and outside the box 100, ensuring the stability of the power distribution box operation.

[0030] Specifically, in some embodiments of this novel invention, such as Figure 4 and Figure 5As shown, a first mounting base 110 is provided inside the housing 100. The first mounting base 110 is concave, and a rectangular through hole 111 is provided in the middle of the concave first mounting base 110. A portion of the socket 300 passes through the rectangular through hole 111, and the first mounting base 110 supports the socket 300. One end of the socket 300 is screwed to the outer wall of the housing 100. Since the rectangular through hole 111 is a contour hole for this socket 300, the other end of the socket 300 can pass through the rectangular through hole 111 and be supported by the first mounting base 110 on the inner wall of the housing 100, so that the socket 300 is firmly connected to the housing 100. When the connector is inserted into the socket 300, the stability of the socket 300 is also maintained.

[0031] Specifically, in some embodiments of this novel invention, such as Figure 4 and Figure 5 As shown, a second mounting base 120 is provided inside the housing 100. The second mounting base 120 is rectangular, and a circular through hole 121 is provided in the middle of the rectangular second mounting base 120. The low-pressure connector 400 passes through the circular through hole 121, and the second mounting base 120 supports the low-pressure connector 400. One end of the low-pressure connector 400 is screwed to the outer wall of the housing 100. Since the circular through hole 121 is a contour hole for the low-pressure connector 400, the other end of the low-pressure connector 400 can pass through the circular through hole 121 and be supported by the second mounting base 120 on the inner wall of the housing 100, so that the low-pressure connector 400 is firmly connected to the housing 100. When the connector is inserted into the low-pressure connector 400, the stability of the low-pressure connector 400 is also maintained.

[0032] Specifically, in some embodiments of this novel invention, such as Figure 4 and Figure 5 As shown, a third mounting base 130 is disposed inside the housing 100. The third mounting base 130 is rectangular, and a convex through hole 131 is provided in the middle of the rectangular third mounting base 130. Another part of the socket 300 passes through the convex through hole 131, and the third mounting base 130 supports the socket 300. One end of the socket 300 is screwed to the outer wall of the housing 100. Since the convex through hole 131 is a contour hole for the socket 300, the other end of the socket 300 can pass through the convex through hole 131 and be supported by the third mounting base 130 on the inner wall of the housing 100, so that the socket 300 is firmly connected to the housing 100. When the connector is inserted into the socket 300, the stability of the socket 300 is also maintained.

[0033] Specifically, in some embodiments of this novel invention, such as Figure 4 and Figure 5As shown, the inner bottom of the housing 100 is provided with a first groove 102 and a second groove 103, which are arranged diagonally. The first groove 102 and the second groove 103 are respectively used to accommodate relays of different specifications. By providing the first groove 102 and the second groove 103, the relay can be accommodated in the groove after installation, close to the heat dissipation fins to dissipate heat and achieve the cooling of the relay.

[0034] Furthermore, the inner bottom of the housing 100 is provided with a third groove 104, which is composed of two rectangular bodies joined together. The third groove 104 is used to accommodate the MOSFET ceramic plate. Since the third groove 104 is located on the back of the heat dissipation fan 520, the heat dissipation fan 520 can efficiently dissipate heat from the MOSFET ceramic plate placed in the third groove 104, thereby improving the heat dissipation effect.

[0035] Specifically, in some embodiments of this novel invention, such as Figure 4 and Figure 5 Figure 4 Figure 5 As shown, the inner bottom of the box 100 is provided with several fixing posts 105, which are used to fix electrical components.

[0036] Specifically, in some embodiments of this novel embodiment, as shown in Figure 2, multiple heat dissipation fins 510 are arranged in parallel, a cavity 530 is provided between the multiple heat dissipation fins 510, a cooling fan 520 is fixed in the cavity 530, and a fan cover 521 is provided at the top of the cooling fan 520 to prevent dust or other particles from contaminating the cooling fan 520 and to maintain the heat dissipation effect of the cooling fan 520.

[0037] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A vehicle-mounted DC-DC power distribution box, characterized in that, include: The box and cover are interconnected. The box has an internal cavity for accommodating electrical components. The side walls of the box are provided with several sockets and low-voltage connectors. A heat dissipation assembly is provided at the bottom of the box body. The heat dissipation assembly includes heat dissipation fins and a heat dissipation fan. Multiple heat dissipation fins are arranged side by side at the bottom of the box body. The heat dissipation fan is fixed at the bottom of the box body and is disposed between the heat dissipation fins. The inner bottom of the box is provided with a first groove and a second groove, which are arranged diagonally. The first groove and the second groove are respectively used to accommodate relays of different specifications. The inner bottom of the box is also provided with a third groove, which is composed of two rectangular bodies spliced ​​together. The third groove is used to accommodate MOSFET ceramic plates. The third groove is located on the back of the heat sink.

2. The vehicle-mounted DC-DC power distribution box according to claim 1, characterized in that, A ventilated component is provided on the side of the box body. The ventilated component includes a vent valve and a sealing seat. The sealing seat is fixed to the side of the box body and has a vent hole. The vent valve passes through the vent hole and is threadedly connected to the sealing seat.

3. The vehicle-mounted DC-DC power distribution box according to claim 1, characterized in that, The box body is provided with a first mounting base, which is concave in shape and has a rectangular through hole in the middle. Part of the socket passes through the rectangular through hole, and the first mounting base supports the socket.

4. The vehicle-mounted DC-DC power distribution box according to claim 3, characterized in that, The box body is provided with a second mounting base, which is rectangular in shape and has a circular through hole in the middle. The low-pressure connector passes through the circular through hole, and the second mounting base supports the low-pressure connector.

5. The vehicle-mounted DC-DC power distribution box according to claim 4, characterized in that, The box contains a third mounting base, which is rectangular in shape and has a convex through hole in the middle. Another part of the socket passes through the convex through hole, and the third mounting base supports the socket.

6. The vehicle-mounted DC-DC power distribution box according to claim 1, characterized in that, The bottom of the box is provided with several fixing posts, which are used to fix electrical components.

7. The vehicle-mounted DC-DC power distribution box according to claim 1, characterized in that, The multiple heat dissipation fins are arranged in parallel, and a cavity is provided between the multiple heat dissipation fins. The cooling fan is fixed in the cavity, and a fan cover is provided on the top of the cooling fan.

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