A BFB electrical box

Abstract

The utility model provides a kind of BFB electric appliance box, multiple bolts are pre-fixed in distribution electric appliance box main body, first busbar and second busbar are arranged at intervals and are fixed in distribution electric appliance box main body by corresponding bolt, one end of second busbar extends to distribution electric appliance box main body outside and is prefabricated with positive pole screw hole, positive pole screw hole is used to connect battery, positive pole cover is connected in the position of the positive pole screw hole of second busbar;One end of PSS fireworks control switch and two MIDI fuses are further connected on second busbar in distribution electric appliance box main body;Two ends of first busbar are respectively connected with MEGA fuse, and the middle part of first busbar is connected with the other end of PSS fireworks control switch.The electric appliance box structure cancels the traditional connection mode compared with traditional distribution electric appliance battery fuse box, adopts the novel connection mode that BUSBAR is directly screwed with battery, saves the connection of positive pole stake head and battery stake head, realizes product light weight, and reduces higher cost.

Description

Technical Field

[0001] This application belongs to the field of automotive parts technology, specifically a BFB electrical box. Background Technology

[0002] The BFB (Busbar Box) is an integrated fuse distribution unit in the high-voltage system of new energy vehicles. It combines the functions of a busbar and electronic fuses, achieving integrated high-voltage current distribution, fault protection, and intelligent monitoring. With increasing environmental awareness in recent years, electric vehicles have entered a stage of rapid development, with rising penetration rates. Consumers have increasingly higher functional requirements and are paying more attention to vehicle safety. Electric vehicles equipped with high-voltage batteries need protection against high-voltage leakage or power outages in case of emergencies to avoid secondary disasters in the event of traffic accidents or malfunctions. Fuses can safely and instantaneously cut off high-voltage current, thereby ensuring the safety of wires and electrical appliances in the circuit. The best carrier for fuses is the fuse box. Utility Model Content

[0003] Based on existing technology, this utility model proposes a BFB electrical box to ensure the safety of wires and electrical appliances in the circuit.

[0004] The technical problem solved by this utility model is achieved through the following technical solution:

[0005] A BFB electrical box includes multiple bolts pre-fixed inside the main body of the distribution box. A first busbar and a second busbar are arranged at intervals and fixed inside the main body of the distribution box by corresponding bolts. One end of the second busbar extends outside the main body of the distribution box and has a pre-drilled positive screw hole for connecting a battery. A positive cover is connected to the positive screw hole of the second busbar. One end of a PSS pyrotechnic control switch and two MIDI fuses are also connected to the second busbar inside the main body of the distribution box. A MEGA fuse is connected to each end of the first busbar, and the other end of the PSS pyrotechnic control switch is connected to the middle of the first busbar.

[0006] Furthermore, the main body of the distribution electrical box is a rectangular cubic box structure, and the outer side of the main body of the distribution electrical box is provided with hanging ears for fixing the electrical box, and the hanging ears are respectively provided with elongated holes and round holes.

[0007] Furthermore, the second busbar is provided with a positive screw hole, a third screw hole, a second screw hole, and a first screw hole at intervals.

[0008] Furthermore, a first bolt, a second bolt, and a third bolt are horizontally spaced on one side of the main body of the distribution electrical box. The positions of the first bolt, the second bolt, and the third bolt correspond one-to-one with the positions and diameters of the third screw hole, the second screw hole, and the first screw hole, respectively.

[0009] Furthermore, the second bus is configured as a multi-segment right-angled zigzag board structure, with the two MIDI fuses set in parallel and staggered positions.

[0010] Furthermore, the MIDI fuse, MEGA fuse, and PSS pyrotechnic control switch are all spaced apart and either parallel or perpendicular to each other, and are connected via the first bus or the second bus, respectively.

[0011] Furthermore, the bolt is fitted with a nut of a corresponding size.

[0012] The advantages and positive effects of this utility model are:

[0013] 1. Compared with traditional distribution boxes and battery fuse boxes, this electrical box structure eliminates the traditional connection method and adopts a new connection method of direct screw connection between BUSBAR and battery, saving the connection of positive terminal and battery terminal, realizing product weight reduction and reducing high costs.

[0014] 2. This electrical box structure has added a PSS pyrotechnic control switch. The design connects the battery power supply to the main electrical box through the BUSBAR / PSS switch. In the event of a collision, short circuit, overcurrent, or other safety fault, it can cut off the power supply in a very short time, reducing the probability of danger.

[0015] 3. This electrical box structure can make real-time judgments based on operating conditions to determine whether to activate protection, thus resolving the conflict between operating current and protection current. It boasts advantages such as high development value, strong practicality, and safety and reliability. Attached Figure Description

[0016] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the embodiments 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.

[0017] Figure 1 This is a schematic diagram (exploded view) of the electrical box structure.

[0018] Figure 2 This is the main view of the electrical box structure (assembled).

[0019] Figure 3 This is a schematic diagram of the second busbar structure.

[0020] Figure 4 This is a schematic diagram of the main structure of the distribution electrical box.

[0021] The markings in the diagram indicate: 1. Main body of the distribution box; 101. Elongated hole; 102. Round hole; 2. PSS pyrotechnic control switch; 3. First busbar (BUSBAR1); 4. Second busbar (BUSBAR2); 401. Positive screw hole; 402. Third screw hole; 403. Second screw hole; 404. First screw hole; 5. MIDI fuse; 6. MEGA fuse; 7. First nut; 8. Second nut; 9. Bolt; 901. First bolt; 902. Second bolt; 903. Third bolt; 10. Positive cover. Detailed Implementation

[0022] To make the structure and advantages of this utility model clearer, the structure of this utility model will be further described below with reference to the accompanying drawings.

[0023] In this embodiment, the vertical direction, horizontal direction, front, back, left, right, etc. are all relative position descriptions and do not limit the actual orientation of the product.

[0024] The busbar in the electrical box is the core conductive structure responsible for current collection, distribution, and transmission. Centralized current distribution within the electrical box replaces traditional distributed wiring, reduces impedance, improves space utilization, and enables electrical connections between modules.

[0025] A BFB electrical box, see attached Figure 1 As shown, it includes two MIDI fuses, two MEGA fuses, one PSS pyrotechnic control switch, and one direct battery connection.

[0026] For details, please refer to the appendix. Figure 2 As shown, the main body 1 of the distribution box is a rectangular cubic box structure. Multiple bolts 9 are pre-fixed inside the main body 1. The first busbar 3 and the second busbar 4 are arranged at intervals and fixed inside the main body 1 by corresponding bolts 9. The bolts 9 are equipped with a first nut 7 or a second nut 8 of the corresponding size; the diameter of the second nut 8 is larger than that of the first nut 7.

[0027] One end of the second busbar 4 extends to the outside of the main body 1 of the distribution box and has a pre-made positive screw hole 401. The positive screw hole 401 is used to connect the battery. A positive cover 10 is connected to the positive screw hole 401 of the second busbar 4. The second busbar 4 inside the main body 1 of the distribution box is also connected to a PSS firework control switch 2 and two MIDI fuses 5.

[0028] A MEGA fuse 6 is connected to each end of the first busbar 3. A PSS pyrotechnic control switch 2 is connected to the middle of the first busbar 3. The two ends of the PSS pyrotechnic control switch 2 are connected to the middle of the first busbar 3 and the second busbar 4 by bolts 9.

[0029] See appendix Figure 3 As shown, the second busbar 4 is provided with a positive screw hole 401, a third screw hole 402, a second screw hole 403 and a first screw hole 404 at intervals.

[0030] See appendix Figure 4 As shown, a first bolt 901, a second bolt 902, and a third bolt 903 are horizontally spaced along one side of the main body 1 of the distribution box. The positions of the first bolt 901, the second bolt 902, and the third bolt 903 correspond one-to-one with the positions and diameters of the third screw hole 402, the second screw hole 403, and the first screw hole 404, respectively. The third bolt 903 is used to connect the PSS pyrotechnic control switch 2 and the second busbar 4. The first bolt 901 and the second bolt 902 are used to connect the busbar and the two MIDI fuses 5, respectively.

[0031] See appendix Figure 2 As shown, the layout inside the box is neat and orderly. The second busbar 4 is set as a multi-segment right-angled folded plate structure. The two MIDI fuses 5 are set in parallel and staggered positions. The two MIDI fuses 5, the two MEGA fuses 6, and the one PSS pyrotechnic control switch 2 are all set in parallel or perpendicular positions to each other, and are spaced apart without overlapping, which facilitates installation and makes full use of the layout space. The structural design of the power distribution box itself makes installation and disassembly extremely convenient.

[0032] The outer side of the main body 1 of the distribution box is provided with lugs for fixing the electrical box. The lugs are provided with elongated holes 101 and round holes 102 respectively. The installation position of the bolts 9 in the elongated holes 101 can be adjusted according to the installation size.

[0033] The fuse box is connected via a hole-type terminal, bolt 9, and nut for fastening. It provides a safe and reliable protection device for the vehicle, with a robust structure.

[0034] The above description is merely an embodiment of this utility model and is not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A BFB appliance box characterized in that Multiple bolts are pre-fixed inside the main body of the distribution box. The first busbar and the second busbar are arranged alternately and fixed inside the main body of the distribution box by corresponding bolts. One end of the second busbar extends outside the main body of the distribution box and has a pre-drilled positive screw hole for connecting the battery. A positive cover is connected to the positive screw hole of the second busbar. One end of the PSS pyrotechnic control switch and two MIDI fuses are also connected to the second busbar inside the main body of the distribution box. A MEGA fuse is connected to each end of the first busbar, and the other end of the PSS pyrotechnic control switch is connected to the middle of the first busbar.

2. The BFB electrical box according to claim 1, characterized in that... The main body of the distribution electrical box is a rectangular cubic box structure. The outer side of the main body of the distribution electrical box is provided with hanging ears for fixing the BFB electrical box. The hanging ears are respectively provided with elongated holes and round holes.

3. A BFB appliance box according to claim 1, wherein The second busbar is provided with a positive screw hole, a third screw hole, a second screw hole and a first screw hole at intervals.

4. A BFB appliance box according to claim 3, wherein The main body of the distribution box is provided with a first bolt, a second bolt and a third bolt at horizontal intervals on one side. The positions of the first bolt, the second bolt and the third bolt correspond one-to-one with the positions and diameters of the third screw hole, the second screw hole and the first screw hole, respectively.

5. A BFB appliance box according to claim 1, wherein The second bus is configured as a multi-segment right-angled zigzag board structure, with the two MIDI fuses set in parallel and staggered positions.

6. A BFB appliance box according to claim 1, wherein The MIDI fuse, MEGA fuse, and PSS pyrotechnic control switch are all spaced apart and either parallel or perpendicular to each other, and are connected via the first bus or the second bus, respectively.

7. A BFB appliance box according to claim 1, wherein The bolt is fitted with a nut of a corresponding size.

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