Large-current busbar

Abstract

The utility model discloses a large-current busbar, which comprises a base, a busbar fixed on the base and a protective cover arranged above the busbar, the protective cover is abutted against the base, a heat conduction block is arranged on the back of the busbar, a plurality of radiating fins are arranged on two sides of the heat conduction block, and the radiating fins are arranged on the base. A distance for air to pass through is reserved between the busbar and the base, the base is provided with a concave cavity for containing the heat conduction block, ventilation holes are formed in the two sides of the concave cavity, and a plurality of heat dissipation holes are formed in the two sides of the top of the protective cover. The busbar conducts temperature to the heat conduction block, cold air exchanges heat with the heat dissipation fins, after heat exchange, the temperature of the air is increased, the density of hot air is reduced and increased, the air is discharged from the heat dissipation holes, and surrounding cold air is supplemented from the ventilation holes, so that air convective circulation is formed, temperature rise of the busbar is effectively controlled, and the service life of the busbar is prolonged. And the product has the advantage of good heat dissipation effect.

Description

TECHNICAL FIELD

[0001] The utility model relates to busbar technical field especially relates to a busbar of large current. BACKGROUND

[0002] The main role of the busbar of large current is to collect and distribute large current, and ensure the safe and stable operation of the circuit.

[0003] When a large amount of current passes through the busbar, it will quickly heat up, and the high temperature will cause the welding points of the busbar to burn, expand and deform, etc., thereby causing the output voltage of the power supply to be unstable, the switching frequency to change, and even output short circuit and other faults, and the high temperature will also affect the working performance of the busbar. Therefore, the applicant has made a beneficial design and found a method to solve the above problems. The technical solution to be introduced below is generated in this background. SUMMARY

[0004] The utility model discloses a product of controlling temperature rise is provided to overcome the insufficient of traditional busbar of large current design.

[0005] To solve the above problems, the utility model adopts the following technical scheme.

[0006] A kind of busbar of large current, including base, and fixed on the base busbar, and the protective cover being arranged above busbar, the protective cover abuts base, the back of the busbar is equipped with heat conduction block, the both sides of the heat conduction block are equipped with several heat dissipation fins, the busbar and base are left with the spacing for air passing, the base is equipped with the recess cavity containing heat conduction block, the both sides of the recess cavity are equipped with vent hole, the top of the protective cover both sides is equipped with several heat dissipation holes.

[0007] Preferably, the busbar is provided with a plurality of first fastening screws.

[0008] Preferably, the both ends of the base are provided with second fastening screws, which pass through the busbar, the second fastening screws are threadedly connected with nuts, and abut against the busbar.

[0009] Preferably, the outer ends of the base are provided with fixing holes, and the fixing holes are provided with counterbores.

[0010] Preferably, the both ends of the protective cover are provided with insulating plugs, and the insulating plugs are sleeved on the second fastening screws.

[0011] Preferably, the protective cover is provided with a cavity, the both sides of the cavity are provided with a plurality of threading holes, and the heat dissipation holes are arranged at the top of the cavity.

[0012] Preferably, the heat conduction block is provided with a plurality of third fastening screws, and is threadedly connected with the busbar.

[0013] Advantages:

[0014] Compared with the prior art, the utility model has the advantages that:

[0015] The utility model discloses, when the bus passes through the large current and makes it fast heating, the temperature heat conduction gives the heat conduction block, and the cold air enters the recess cavity through the vent, and exchanges heat with multiple radiating fins, and the air is heated after heat exchange, and the hot air density reduces and rises, and is discharged from the radiating hole, and the surrounding cold air is supplemented and enters from the vent, to form the air convection circulation, and then effectively control the temperature rise of the bus, avoid the bus because of high temperature, influence electrical performance, overcome the problem of the background art. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It is the structure schematic diagram of a bus of large current of the utility model;

[0017] Fig. 2 It is the explosion drawing of a bus of large current of the utility model;

[0018] Fig. 3 It is the side cross section structure schematic diagram of a bus of large current of the utility model;

[0019] Fig. 4 It is the internal structure schematic diagram of a bus of large current of the utility model;

[0020] The correspondence between the various figure marks and the component names in the drawing is as follows:

[0021] Figure mark: 1, base;2, bus;3, protective cover;4, heat conduction block;5, first fastening screw;6, second fastening screw;7, nut;8, third fastening screw;11, recess cavity;12, vent;13, fixed hole;14, counterbore;31, radiating hole;32, insulating plug;33, cavity;34, threading hole;41, radiating fin. DETAILED DESCRIPTION

[0022] The technical scheme of the utility model will be described below in conjunction with the embodiments, obviously, the described embodiments are a part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the protection scope of the utility model.

[0023] In the description of the utility model, it needs to be understood that the directions or position relations indicated by the terms "upper", "lower", "left", "right" and the like are based on the directions or position relations shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the utility model.

[0024] In the embodiments of the utility model, "and / or" is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can mean that A exists alone, A and B exist together, and B exists alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects have an "or" relationship.

[0025] Reference example Figs. 1 to 4 A busbar of large current, comprising a base 1, a busbar 2 fixed on the base 1, and a protective cover 3 arranged above the busbar 2, the protective cover 3 abuts against the base 1, the back of the busbar 2 is provided with a heat conduction block 4, the two sides of the heat conduction block 4 are provided with a plurality of heat dissipation fins 41, the busbar 2 and the base 1 are left with a spacing for air to pass through, the base 1 is provided with a recessed cavity 11 accommodating the heat conduction block 4, the two sides of the recessed cavity 11 are provided with ventilation holes 12, the top of the protective cover 3 is provided with a plurality of heat dissipation holes 31, when the busbar 2 passes through a large current to make it heat up quickly, the temperature is heat-conducted to the heat conduction block 4, cold air enters the recessed cavity 11 through the ventilation holes 12 and exchanges heat with the plurality of heat dissipation fins 41, the air is heated after heat exchange, the hot air is lighter and rises, and is discharged from the heat dissipation holes 31, the surrounding cold air is supplemented into the ventilation holes 12, so that air convection circulation is formed, and the temperature rise of the busbar 2 is effectively controlled, so that the electrical performance of the busbar 2 is not affected due to high temperature;

[0026] It is worth mentioning that the busbar 2 is provided with a plurality of first fastening screws 5, and the first fastening screws 5 fix the wires or copper noses on the busbar 2.

[0027] It is worth mentioning that the two ends of the base 1 are provided with second fastening screws 6, and the second fastening screws 6 pass through the busbar 2, the second fastening screws 6 are threadedly connected with nuts 7 and abut against the busbar 2, the nuts 7 cooperate with the second fastening screws 6 to form a force for clamping the busbar 2 and the base 1, so that the busbar 2 is firmly fixed on the base 1.

[0028] It is worth mentioning that the outer two ends of the base 1 are provided with fixing holes 13, the fixing holes 13 are provided with counterbores 14, the fixing holes 13 facilitate the user to fix the base 1 on the fixed object, and the counterbores 14 make the heads of fasteners flush with the surface of the base 1, so as to ensure the aesthetics.

[0029] It is worth mentioning that the two ends of the protective cover 3 are provided with insulating plugs 32, the insulating plugs 32 are sleeved on the second fastening screws 6, the insulating plugs 32 not only make the protective cover 3 tightly abut against the base 1, but also prevent the second fastening screws 6 and the busbar 2 from being touched by mistake, and prevent the person from being electrocuted;

[0030] It is worth mentioning that the protective cover 3 is provided with a cavity 33, the two sides of the cavity 33 are provided with a plurality of wire holes 34, the heat dissipation holes 31 are arranged on the top of the cavity 33, the cavity 33 contains a large amount of hot air, so that the air convection circulation is formed, the wire holes 34 are convenient for the wires to pass through and are electrically connected with the busbar 2;

[0031] It is worth mentioning that the heat conduction block 4 is provided with a plurality of third fastening screws 8 and is threadedly connected with the busbar 2, the heat conduction block 4 is tightly attached to the busbar 2 through the third fastening screws 8, the gap between the two is reduced, and the heat conduction efficiency is increased.

[0032] The above design scheme can make the product realize the advantage of controlling the temperature rise.

[0033] The above content is further detailed description of the utility model in combination with specific embodiments, and cannot be determined that the specific implementation of the utility model is limited to these descriptions, for ordinary skilled person in the technical field of the utility model, on the premise of not departing from the concept of the utility model, a number of simple deductions or substitutions can be made, and all should be regarded as belonging to the protection scope determined by the claims of the utility model submitted.

Claims

1. A large-current busbar, comprising a base (1), a busbar (2) fixed on the base (1), and a protective cover (3) arranged above the busbar (2), the protective cover (3) abutting against the base (1), characterized in that: The back of the busbar (2) is provided with a heat conduction block (4), both sides of the heat conduction block (4) are provided with a plurality of heat dissipation fins (41), the busbar (2) and the base (1) are left with a spacing for air passing, the base (1) is provided with a recess (11) containing the heat conduction block (4), both sides of the recess (11) are provided with a ventilation hole (12), both sides of the top of the protective cover (3) are provided with a plurality of heat dissipation holes (31).

2. The busbar of claim 1, wherein: The busbar (2) is provided with a plurality of first fastening screws (5).

3. The busbar of claim 1, wherein: Both ends of the base (1) are provided with second fastening screws (6) passing through the busbar (2), the second fastening screws (6) are threadedly connected with nuts (7) and abut against the busbar (2).

4. The busbar of claim 3, wherein: Both outer ends of the base (1) are provided with fixing holes (13), the fixing holes (13) are provided with counterbores (14).

5. The bus bar of claim 1, wherein: Both ends of the protective cover (3) are provided with insulating plugs (32), the insulating plugs (32) are sleeved on the second fastening screws (6).

6. The busbar of claim 5, wherein: The protective cover (3) is provided with a cavity (33), both sides of the cavity (33) are provided with a plurality of wire holes (34), and the heat dissipation holes (31) are arranged on the top of the cavity (33).

7. A busbar for high currents according to any one of claims 2 to 6, characterized in that: The heat conduction block (4) is provided with a plurality of third fastening screws (8) and is threadedly connected with the busbar (2).

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