Power distribution structure and power distribution box

Abstract

The utility model relates to a distribution box technical field especially, relates to a distribution structure and distribution box, distribution structure includes casing, fuse, circuit board and heat dissipation subassembly, the fuse is installed in the circuit board, is equipped with positive printing circuit and negative printing circuit on the circuit board, the positive printing circuit is suitable for electric connection input end of the fuse with the positive pole of power supply, the negative printing circuit is suitable for electric connection negative pole of electrical equipment with the negative pole of power supply, the output of the fuse is suitable for and the positive pole of electrical equipment electric connection, the heat dissipation subassembly is used for the heat dissipation of positive printing circuit and negative printing circuit. The development cycle is reduced, and the production cost is reduced, and the heat dissipation subassembly can also heat dissipation positive printing circuit and negative printing circuit, avoid the temperature of circuit board too high.

Description

Technical Field

[0001] This utility model relates to the field of power distribution box technology, and in particular to a power distribution structure and power distribution box. Background Technology

[0002] A distribution box is an electrical device that centrally distributes, controls, and protects electrical energy. It can distribute the electrical energy input to multiple output branches to provide power to various electrical devices.

[0003] An existing power distribution box includes a housing, a battery, and fuses. A copper busbar and multiple fuses are installed inside the housing. One end of the battery's positive cable extends into the housing and is electrically connected to the input terminal of each fuse. The other end of the battery's positive cable is exposed outside the housing for connection to the positive terminal of the battery. One end of the cable connected to the positive terminal of the electrical device extends into the housing and is electrically connected to the output terminal of each fuse. One end of the cable connected to the negative terminal of the electrical device extends into the housing and is connected to the input terminal of the copper busbar. The end of the battery's negative cable extends into the housing and is connected to the output terminal of the copper busbar for connection to the negative terminal of the battery, thereby distributing electrical energy to each electrical device.

[0004] However, existing distribution boxes require custom molds for the internal shape of the casing and the copper busbars, resulting in long development cycles and high production costs. Summary of the Invention

[0005] This utility model provides a power distribution structure and a power distribution box, which aims to solve the problems of existing power distribution boxes, where the internal shape of the shell needs to be molded for fuses and copper busbars, resulting in long development cycles and high production costs.

[0006] To address the aforementioned problems, this utility model provides a power distribution structure, including a housing, a fuse, a circuit board, and a heat dissipation assembly. The fuse is mounted on the circuit board, which has positive and negative printed lines. The positive printed lines are adapted to electrically connect the input terminal of the fuse to the positive terminal of the power supply, and the negative printed lines are adapted to electrically connect the negative terminal of the electrical device to the negative terminal of the power supply. The output terminal of the fuse is adapted to be electrically connected to the positive terminal of the electrical device. The heat dissipation component is used for heat dissipation of the positive electrode printed circuit and the negative electrode printed circuit.

[0007] Optionally, the heat dissipation component includes a positive heat dissipation hole disposed on the positive printed circuit, the positive heat dissipation hole penetrating the circuit board along the thickness direction of the circuit board.

[0008] Optionally, the heat dissipation component includes a negative electrode heat dissipation hole disposed on the negative electrode printed circuit, the negative electrode heat dissipation hole penetrating the circuit board along the thickness direction of the circuit board.

[0009] Optionally, the power distribution structure further includes a power cable assembly, which includes a first positive cable and a first negative cable. The first positive cable is adapted to be electrically connected between the positive printed circuit and the positive terminal of the power supply, and the first negative cable is adapted to be electrically connected between the negative printed circuit and the negative terminal of the power supply.

[0010] Optionally, the power distribution structure further includes a device cable assembly, which includes a second positive cable and a second negative cable. The second positive cable is adapted to be electrically connected between the output terminal of the fuse and the positive terminal of the electrical device, and the second negative cable is adapted to be electrically connected between the negative printed circuit and the negative terminal of the electrical device.

[0011] Optionally, the power distribution structure further includes a first positive conductive plate, which is mounted on the circuit board and electrically connected to the positive printed circuit. The input terminal of the fuse is electrically connected to the first positive conductive plate.

[0012] Optionally, the power distribution structure further includes a first negative conductive plate and a second negative conductive plate mounted on the circuit board. Both the first negative conductive plate and the second negative conductive plate are electrically connected to the negative printed circuit. The first negative cable is electrically connected to the first negative conductive plate, and the second negative cable is electrically connected to the second negative conductive plate.

[0013] Optionally, multiple fuses are provided, and the multiple fuses are arranged at intervals along the first direction.

[0014] According to the power distribution structure provided in this utility model embodiment, the positive terminal of the power supply is connected to the fuse through a positive printed cable on the circuit board, and the negative terminal of the power supply is connected to the negative terminal of the electrical device through a negative printed line. There is no need to design the shape of the inside of the casing, which reduces the development cycle and production cost. In addition, the heat dissipation component can also dissipate heat from the positive and negative printed lines to prevent the circuit board temperature from getting too high.

[0015] This utility model embodiment also provides a power distribution box, including a housing and the above-mentioned power distribution structure. The housing is provided with a mounting cavity, the circuit board is mounted in the mounting cavity, and the housing is provided with a first through hole, a second through hole, a third through hole and a fourth through hole communicating with the mounting cavity. The first positive cable passes through the first through hole, the first negative cable passes through the second through hole, the second positive cable passes through the third through hole, and the second negative cable passes through the fourth through hole.

[0016] Optionally, the circuit board is connected to the housing screws. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a power distribution box provided in an embodiment of the present invention; Figure 2 for Figure 1 Internal structure diagram; Figure 3 This is a schematic diagram of the power distribution structure provided in one embodiment of the present utility model; Figure 4 for Figure 3 Another perspective; Figure 5 for Figure 1 A schematic diagram of the structure of the middle shell.

[0019] Reference numerals in the accompanying drawings: 1. Housing; 2. Housing body; 3. Top cover; 4. Mounting cavity; 5. Fuse; 6. First through hole; 7. Second through hole; 8. Third through hole; 9. Fourth through hole; 10. Circuit board; 11. First positive cable; 12. First negative cable; 13. Second positive cable; 14. Second negative cable; 15. Positive printed circuit; 16. Positive heat dissipation hole; 17. First positive conductive plate; 18. Transition printed circuit; 19. First transition conductive plate; 20. Second transition conductive plate; 21. Negative printed circuit; 22. Negative heat dissipation hole; 23. First negative conductive plate; 24. Second negative conductive plate; 25. Support part; 26. First mounting hole; 27. Second mounting hole; 28. Insertion hole; 29. ​​Pin part; 30. Third mounting hole; 31. Support column; 32. Fourth mounting hole. Detailed Implementation

[0020] To make the technical problems solved, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of 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.

[0022] like Figures 1 to 5 As shown, an embodiment of the present invention provides a power distribution box, including a housing 1 and a power distribution structure. The power distribution structure includes a fuse 5, a circuit board 10 and a heat dissipation assembly. The fuse 5 is mounted on the circuit board 10. The circuit board 10 is provided with a positive printed line 15 and a negative printed line 21. The positive printed line 15 is adapted to electrically connect the input terminal of the fuse 5 to the positive terminal of the power supply. The negative printed line 21 is adapted to electrically connect the negative terminal of the electrical equipment to the negative terminal of the power supply. The output terminal of the fuse 5 is adapted to be electrically connected to the positive terminal of the electrical equipment.

[0023] The heat dissipation component is used to dissipate heat from the positive printed circuit 15 and the negative printed circuit 21.

[0024] In this embodiment, the positive terminal of the power supply is connected to the fuse 5 by a positive printed cable on the circuit board 10, and the negative terminal of the power supply is connected to the negative terminal of the electrical device by a negative printed line 21. This eliminates the need for a specific design of the internal shape of the housing 1, reducing the development cycle and production costs. In addition, the heat dissipation component can also dissipate heat from the positive printed line 15 and the negative printed line 21, preventing the circuit board 10 from overheating.

[0025] In one embodiment, the heat dissipation assembly includes a positive heat dissipation hole 16 disposed on the positive printed circuit 15, the positive heat dissipation hole 16 penetrating the circuit board 10 along the thickness direction of the circuit board 10.

[0026] In this embodiment, the positive electrode heat dissipation hole 16 penetrates through the circuit board 10, which is convenient for design and can form a ventilation channel in the thickness direction of the circuit board 10. The flowing air can carry away the heat on the positive electrode printed circuit 15.

[0027] In one embodiment, the heat dissipation assembly includes a negative electrode heat dissipation hole 22 disposed on the negative electrode printed circuit 21, the negative electrode heat dissipation hole 22 penetrating the circuit board 10 along the thickness direction of the circuit board 10.

[0028] In this embodiment, the negative electrode heat dissipation hole 22 penetrates through the circuit board 10, which is convenient for design and can form a ventilation duct in the thickness direction of the circuit board 10. The flowing air can carry away the heat on the negative electrode printed circuit 21.

[0029] In one embodiment, the power distribution structure further includes a power cable assembly, which includes a first positive cable 11 and a first negative cable 12. The first positive cable 11 is adapted to be electrically connected between the positive printed circuit 15 and the positive terminal of the power supply, and the first negative cable 12 is adapted to be electrically connected between the negative printed circuit 21 and the negative terminal of the power supply.

[0030] In this embodiment, the first positive cable 11 is electrically connected to the positive printed circuit 15 and the positive terminal of the power supply, enabling the current from the power supply to be transferred to the positive printed circuit 15 and then to the fuse 5. The first negative cable 12 is electrically connected between the negative printed circuit 21 and the negative terminal of the power supply, thereby forming a current loop of power supply-fuse 5-electrical equipment-power supply.

[0031] In one embodiment, the power distribution structure further includes a device cable assembly, which includes a second positive cable 13 and a second negative cable 14. The second positive cable 13 is adapted to be electrically connected between the output terminal of the fuse 5 and the positive terminal of the electrical device, and the second negative cable 14 is adapted to be electrically connected between the negative printed circuit 21 and the negative terminal of the electrical device.

[0032] In this embodiment, the second positive cable 13 is used to connect between the output terminal of the fuse 5 and the positive terminal of the electrical device, so as to facilitate the transfer of the current flowing through the fuse 5 to the electrical device. The second negative cable 14 is used to connect between the negative printed circuit 21 and the negative terminal of the electrical device, so as to facilitate the electrical connection between the electrical device and the negative printed circuit 21, and to facilitate design and connection.

[0033] In one embodiment, the power distribution structure further includes a first positive conductive plate 17, which is mounted on the circuit board 10 and electrically connected to the positive printed circuit 15. The input terminal of the fuse 5 is electrically connected to the first positive conductive plate 17.

[0034] In this embodiment, the first positive electrode conductive plate 17 includes a pin portion 29 and a support portion 25. The pin portion 29 is inserted into the socket 28 provided on the circuit board 10 and the pin portion 29 is soldered to the positive electrode printed circuit 15.

[0035] In this embodiment, the support portion 25 is inverted U-shaped and is provided with a first mounting hole 26. The circuit board 10 is provided with a second mounting hole 27. The first mounting hole 26 and the second mounting hole 27 are arranged opposite each other. The input end of the fuse 5 and the end of the first positive cable 11 are both placed on the support portion 25. The input end of the fuse 5 and the end of the first positive cable 11 are locked on the support portion 25 by screws that pass through the input end of the fuse 5, the end of the first positive cable 11, the first mounting hole 26 and the second mounting hole 27, thereby achieving conductive support for the input end of the fuse 5 and the first positive cable 11.

[0036] In this embodiment, the power distribution structure also includes a transition printed circuit 18, a first transition conductive plate 19, and a second transition conductive plate 20. The transition printed circuit 18 is spaced apart from the positive printed circuit 15. The first transition conductive plate 19 and the second transition conductive plate 20 are mounted on the circuit board 10. Both the first transition conductive plate 19 and the second transition conductive plate 20 are electrically connected to the transition printed circuit 18. The output terminal of the fuse 5 is electrically connected to the first transition conductive plate 19. The second positive cable 13 is electrically connected to the second transition conductive plate 20.

[0037] In this embodiment, the first transition conductive plate 19 and the second transition conductive plate 20 are both structurally identical to the first positive electrode conductive plate 17.

[0038] In this embodiment, the first transition conductive plate 19 conductively supports the output end of the fuse 5, and the second transition conductive plate 20 conductively supports the end of the second positive electrode cable 13.

[0039] In one embodiment, the power distribution structure further includes a first negative conductive plate 23 and a second negative conductive plate 24 mounted on the circuit board 10. Both the first negative conductive plate 23 and the second negative conductive plate 24 are electrically connected to the negative printed circuit 21. The first negative cable 12 is electrically connected to the first negative conductive plate 23, and the second negative cable 14 is electrically connected to the second negative conductive plate 24.

[0040] In this embodiment, the first negative conductive plate 23 and the second negative conductive plate 24 have the same structure as the first positive conductive plate 17. The first negative conductive plate 23 is used to conductively support the end of the first negative cable 12, and the second negative conductive plate 24 is used to conductively support the output end of the fuse 5.

[0041] In one embodiment, multiple fuses 5 are provided, and the multiple fuses 5 are arranged at intervals along a first direction.

[0042] In this embodiment, multiple equipment cable assemblies are provided, and the multiple equipment cable assemblies are spaced apart. Each of the multiple equipment cable assemblies corresponds to a multiple fuse 5 to distribute the power supply to multiple electrical devices.

[0043] In one embodiment, the housing 1 has a mounting cavity 4, the circuit board 10 is mounted in the mounting cavity 4, and the housing 1 has a first through hole 6, a second through hole 7, a third through hole 8 and a fourth through hole 9 communicating with the mounting cavity 4.

[0044] The first positive cable 11 is threaded through the first through hole 6, the first negative cable 12 is threaded through the second through hole 7, the second positive cable 13 is threaded through the third through hole 8, and the second negative cable 14 is threaded through the fourth through hole 9.

[0045] In one embodiment, the circuit board 10 is screwed to the housing 1.

[0046] In this embodiment, the circuit board 10 is provided with a third mounting hole 30, the inner wall of the mounting cavity 4 is provided with a support post 31, and the support post 31 is provided with a fourth mounting hole 32. The support post 31 is used to support the circuit board 10. The circuit board 10 is installed in the mounting cavity 4 by inserting screws through the third mounting hole 30 and the fourth mounting hole 32.

[0047] In this embodiment, the housing 1 includes a housing body 2 and a top cover 3. The mounting cavity 4 is disposed on the housing body 2, and the top cover 3 is screwed to the housing body 2, which facilitates the installation of the power distribution structure in the mounting cavity 4.

[0048] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0049] According to the power distribution box provided in this embodiment of the utility model, the positive terminal of the power supply is connected to the fuse 5 through the positive printed cable on the circuit board 10, and the negative terminal of the power supply is connected to the negative terminal of the electrical equipment through the negative printed line 21. There is no need to make specific designs for the shape inside the housing 1, which reduces the development cycle and production costs. In addition, the heat dissipation component can also dissipate heat from the positive printed line 15 and the negative printed line 21 to prevent the circuit board 10 from getting too hot.

[0050] In addition, one embodiment of this utility model also provides the above-mentioned power distribution structure.

[0051] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model, and should all be included within the protection scope of this utility model.

Claims

1. A power distribution structure, characterized in that, The device includes a housing (1), a fuse (5), a circuit board (10), and a heat dissipation assembly. The fuse (5) is mounted on the circuit board (10). The circuit board (10) has a positive printed line (15) and a negative printed line (21). The positive printed line (15) is adapted to electrically connect the input terminal of the fuse (5) to the positive terminal of the power supply. The negative printed line (21) is adapted to electrically connect the negative terminal of the electrical device to the negative terminal of the power supply. The output terminal of the fuse (5) is adapted to be electrically connected to the positive terminal of the electrical device. The heat dissipation component is used for heat dissipation of the positive electrode printed circuit (15) and the negative electrode printed circuit (21).

2. The power distribution structure according to claim 1, characterized in that, The heat dissipation component includes a positive heat dissipation hole (16) disposed on the positive printed circuit (15), and the positive heat dissipation hole (16) penetrates the circuit board (10) along the thickness direction of the circuit board (10).

3. The power distribution structure according to claim 1, characterized in that, The heat dissipation component includes a negative heat dissipation hole (22) disposed on the negative printed circuit (21), and the negative heat dissipation hole (22) penetrates the circuit board (10) along the thickness direction of the circuit board (10).

4. The power distribution structure according to claim 1, characterized in that, The power distribution structure also includes a power cable assembly, which includes a first positive cable (11) and a first negative cable (12). The first positive cable (11) is adapted to be electrically connected between the positive printed circuit (15) and the positive terminal of the power supply, and the first negative cable (12) is adapted to be electrically connected between the negative printed circuit (21) and the negative terminal of the power supply.

5. The power distribution structure according to claim 4, characterized in that, The power distribution structure also includes a device cable assembly, which includes a second positive cable (13) and a second negative cable (14). The second positive cable (13) is adapted to be electrically connected between the output end of the fuse (5) and the positive terminal of the electrical equipment, and the second negative cable (14) is adapted to be electrically connected between the negative printed circuit (21) and the negative terminal of the electrical equipment.

6. The power distribution structure according to claim 5, characterized in that, The power distribution structure also includes a first positive conductive plate (17), which is mounted on the circuit board (10), electrically connected to the positive printed circuit (15), and the input terminal of the fuse (5) is electrically connected to the first positive conductive plate (17).

7. The power distribution structure according to claim 5, characterized in that, The power distribution structure also includes a first negative electrode conductive plate (23) and a second negative electrode conductive plate (24) installed on the circuit board (10). The first negative electrode conductive plate (23) and the second negative electrode conductive plate (24) are both electrically connected to the negative electrode printed circuit (21). The first negative electrode cable (12) is electrically connected to the first negative electrode conductive plate (23), and the second negative electrode cable (14) is electrically connected to the second negative electrode conductive plate (24).

8. The power distribution structure according to claim 5, characterized in that, The fuse (5) is provided in multiple ways, and the multiple fuses (5) are arranged at intervals along the first direction.

9. A power distribution box, characterized in that, The device includes a housing (1) and a power distribution structure as described in any one of claims 5 to 8. The housing (1) has a mounting cavity (4) inside, and the circuit board (10) is mounted in the mounting cavity (4). The housing (1) has a first through hole (6), a second through hole (7), a third through hole (8) and a fourth through hole (9) communicating with the mounting cavity (4). The first positive cable (11) is inserted through the first through hole (6), the first negative cable (12) is inserted through the second through hole (7), the second positive cable (13) is inserted through the third through hole (8), and the second negative cable (14) is inserted through the fourth through hole (9).

10. The distribution box according to claim 9, characterized in that, The circuit board (10) is screwed to the housing (1).

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