CN201556591U

CN201556591U - Fuse

Info

Publication number: CN201556591U
Application number: CN200920261759XU
Authority: CN
Inventors: 韩露; 高连忠; 卢志明; 郭良华; 张贤春; 黄卫平
Original assignee: DONGGUAN BETTER ELECTRONIC TECHNOLOGY Co Ltd
Current assignee: Dongguan Better Electronics Technology Co., Ltd.
Priority date: 2009-12-18
Filing date: 2009-12-18
Publication date: 2010-08-18
Anticipated expiration: 2019-12-18

Abstract

The utility model relates to a fuse, in particular to a fuse used together with an electric power board of an electric automobile. The fuse comprises an upper housing, a lower housing and a metal body; the metal body entirely adopts a strip shape and comprises installation segments arranged at the two ends and a fusing segment arranged in the middle; structures in fixedly mounted with protected objects (such as the control circuit of the electric automobile) are manufactured on the installation segments; the fusing segment is divided into two branches in the length direction of the metal body and the cross section for current to pass through of the two branches are identical, so that the fusing segment is divided into two branches uniformly; and the fusing segment of the metal body is fixedly mounted in the cavity formed by the upper housing and the lower housing. The fuse has the benefits that the fusing segment and a transitional segment are sealed in the cavity formed by the upper housing and the lower housing to be protected; the fusing segment is divided into the two branches, thereby improving the anti-buffer capability of the fuse and achieving good electric characteristics; and preferably, the upper housing and the lower housing are made of transparent insulating plastics, so that the condition of the fusing segment inside can be directly observed, thereby facilitating failure check.

Description

A kind of fuse

Technical field

The utility model relates to and the matching used fuse of electric car power supply control board.

Background technology

Electric automobile needs very big energy when driving is advanced, operating current is very high generally at 200A-300A.Once take place to produce bigger immediate current unusually, the control circuit of electric automobile can be melted, even cause fire.In the prior art, poor with the anti-buffer capacity of the matching used fuse of Control of Electric Vehicles circuit, the fail safe shortcoming, close and protect is not enough, causes a hidden trouble to electric automobile, becomes one of key factor that influences the electric automobile fail safe.Simultaneously, use not very convenient yet.

Market demand is a kind of can evade the raising electric automobile fail safe that produces major accident under the abnormalities such as the Control of Electric Vehicles circuit is short-circuited with matching used conveyance capacity 300A of Control of Electric Vehicles circuit even bigger fuse; the Control of Electric Vehicles circuit can be protected under unusual state, prevent the fire and the personal safety that cause unusually.

The utility model content

The utility model is intended to overcome the above-mentioned deficiency of prior art, release a kind of fuse, it can be easily and the supporting use of Control of Electric Vehicles circuit, can evade under the abnormalities such as the Control of Electric Vehicles circuit is short-circuited producing major accident, improves the electric automobile security performance.

For this reason, the utility model goes out a kind of fuse and adopts following technical scheme:

A kind of fuse of structure the utility model comprises upper casing, lower casing and metallic object; Metallic object is overall shaped into strip, and it comprises the construction section that lays respectively at two ends and is positioned at the fusing section of middle part; Be shaped on the two described construction sections with protected object (as the Control of Electric Vehicles circuit) fastening structure is installed; Described fusing section is divided into two branches along the metallic object length direction, and two branches are equal by the cross-sectional area of electric current, makes described fusing section be divided into two-way; The fusing section of metallic object is fastening to be installed in the chamber that upper casing and lower casing constitute.

Technique scheme is further set forth:

Metallic object is selected for use and is made the alloy material that fuse is used.

Upper casing and lower casing are made of insulating material, as the plastics etc. of insulation.

The ambroin of upper casing of the present utility model and lower casing preferably clear is made, and whether the fusing section that is positioned at wherein of can coming into plain view outside housing is intact, is convenient to investigate thoroughly fault.

Fastening structure is installed for the installing hole on two described construction sections, made etc. with protected object on the two described construction sections; the position of the installing hole on the position of its installing hole and quantity and the protected object and quantity Matching, by screw that the utility model and protected object is fastening.

The utility model is compared with prior art; its beneficial effect is: one, fusing section are enclosed in the enclosed cavity of upper casing and lower casing formation; can protect the fusing section (fusible link) can be and impaired fully by percussion; and; around the moment of fusing can not arrive spread heat; play heat insulation effect, can not injure other parts.Two, described fusing section is divided into two branch roads, like this, be divided into two-way (the size of current unanimity of two-way) when making electric current flow through described fusing section, when running into overcurrent or short circuit phenomenon, fusing one tunnel fuse one the tunnel again, or two-way fuses simultaneously earlier, play cushioning effect, cause the anti-buffer capacity of the utility model to improve jumping phenomenon; Three, its electrical characteristic is good, when battery takes place when unusual, can in 1S, move, when being short-circuited, can 300ms in action, its conveyance capacity is big, can surpass 300A.Four, can be equipped with by convenient control circuit, get final product with screw is fastening, change also very easy by the installing hole on the metallic object with electric automobile.Five, improved the security performance of electric automobile, for the development of electric automobile provides safety guarantee and dependence.Six, the ambroin of upper casing and lower casing preferably clear is made, and whether the fusing section that is positioned at wherein of can coming into plain view from housing outside is intact, is convenient to investigate thoroughly fault, the raising overhaul efficiency.

Description of drawings

Fig. 1 is the utility model metallic object schematic diagram.

Fig. 2 is the utility model decomposing schematic representation.

Fig. 3 is the utility model overall schematic.

Among the figure: 1, upper casing; 2, lower casing; 3, metallic object; 31, construction section; 311, installing hole; 32, fusing section; 321, elongated slot.

Embodiment

Below, in conjunction with the accompanying drawings, introduce embodiment of the present utility model.

As shown in the figure, a kind of fuse of the utility model comprises upper casing 1, lower casing 2 and metallic object 3; Metallic object 3 is overall shaped into strip, and it comprises construction section 31 that lays respectively at two ends and the fusing section 32 that is positioned at the middle part; Be shaped on the two described construction sections 32 with protected object (as the Control of Electric Vehicles circuit) fastening structure is installed; Described fusing section 32 is divided into two branches along metallic object 3 length directions, and two branches equate by the cross-sectional area of electric current, makes described fusing section be divided into two-way; During concrete the making, promptly be shaped on an elongated slot 331 along metallic object 3 length directions on described fusing section 33, this elongated slot 331 pierces fusing section 33, just described fusing sections 33 is divided into two branch roads along metallic object 3 length directions; The fusing section 32 of metallic object 3 is fastening to be installed in the chamber that upper casing 1 and lower casing 2 constitute.

Metallic object 3 is selected for use and is made the alloy material that fuse is used.

Upper casing 1 and lower casing 2 usefulness insulating material are made, as the plastics of insulation etc.

The ambroin of upper casing 1 of the present utility model and lower casing 2 preferably clears is made, and whether the fusing section 32 that is positioned at wherein of can coming into plain view outside housing is intact, is convenient to investigate thoroughly fault.

With protected object the installing hole 311 etc. that fastening structure be making on two described construction sections 31 is installed on the two described construction sections 31; the position of the installing hole on the position of its installing hole 311 and quantity and the protected object and quantity Matching, by screw that the utility model and protected object is fastening.

Use when installing, the shell that hand-held upper casing 1 of the present utility model and lower casing 2 constitute, with screw that the utility model and protected object is fastening.If will change, screw is backed out.Installation and replacing are all more convenient.

The above only is preferred embodiment of the present utility model, is not that technical scope of the present utility model is imposed any restrictions.The technical staff of the industry, under the inspiration of the technical program, can make some distortion and revise, as the concrete mounting structure of the concrete moulding of concrete shape, upper casing 1 and the lower casing 2 of metallic object 3 and lid card structure, metallic object 3 and upper casing 1 and lower casing 2 etc., every foundation technical spirit of the present utility model all still belongs in the scope of technical solutions of the utility model above any modification, equivalent variations and modification that embodiment did.

Claims

1. a fuse is characterized in that: comprise upper casing (1), lower casing (2) and metallic object (3); Metallic object (3) is overall shaped into strip, and it comprises construction section (31) that lays respectively at two ends and the fusing section (32) that is positioned at the middle part; Be shaped on the two described construction sections (32) with protected object fastening structure is installed; Described fusing section (32) is divided into two branches along metallic object (3) length direction, and two branches are equal by the cross-sectional area of electric current, make described fusing section (32) be divided into two-way; The fusing section (32) of metallic object (3) is fastening to be installed in the chamber that upper casing (1) and lower casing (2) constitute.

2. a kind of fuse according to claim 1 is characterized in that: metallic object (3) is selected for use and is made the alloy material making that fuse is used.

3. a kind of fuse according to claim 1 is characterized in that: upper casing (1) and lower casing (2) are made of insulating material.

4. a kind of fuse according to claim 3 is characterized in that: upper casing (1) and lower casing (2) are made of transparent ambroin.

5. a kind of fuse according to claim 1 is characterized in that: two described construction sections (31) are gone up and protected object is installed fastening structure for go up the installing hole of making (311) at two described construction sections (31).