CN206471405U - A kind of battery pack coupling mechanism - Google Patents

Abstract

The utility model discloses a kind of battery pack coupling mechanism, including cell and the positive terminal and negative terminal that are respectively arranged on cell two ends, and a device for fusing is electrically connected in the positive terminal and negative terminal, and the device for fusing includes insulation shell and fuse；The positive terminal includes stud and the first weld part, and the stud and the first weld part are individually fixed in the two ends of insulation shell, and stud is electrically connected with the first weld part by fuse；The negative terminal includes nut and the second weld part, and the nut and the second weld part are individually fixed in the two ends of another device for fusing, and nut is electrically connected with the second weld part by fuse；Compared with prior art, the beneficial effects of the utility model are；It is electrically connected with reliable and stable between cell and assembling is simple, when abnormal conditions occur for battery pack, being located at the fuse of abnormal cell one end can fuses cut-out electric current, so as to avoid cell from thermal runaway or the situation of failure occur.

Description

A kind of battery pack coupling mechanism

【Technical field】

The utility model is related to cell art, is specifically related to a kind of battery pack coupling mechanism.

【Background technology】

With the continuous consumption of non-renewable resources and increasingly highlighting for environmental problem, country is to the research of new energy and opens Hair is increasingly paid attention to, the index requirement especially in terms of energy-saving and emission-reduction so that battery develops very rapidly in recent years, and It is widely used in electric automobiles.But the voltage and power of a cell are not enough to promote the operation of electric car at all, It is generally necessary to which multiple cell connection in series-parallel are formed into a high voltage, powerful the battery pack motor-car that could power makes together With.Battery pack can frequently be rocked with the traveling of electric car in use, and cell belong to secondary cell run into it is different The possibility of heating failure is had during reason condition, serious meeting causes the potential safety hazard of blast on fire, therefore how to ensure monomer electricity Electric connection between pond is reliable and stable also more and more important.

In consideration of it, real be necessary to provide a kind of battery pack coupling mechanism to overcome the deficiencies in the prior art.

【Utility model content】

The purpose of this utility model is to provide a kind of easy to assembly, electric connection reliably, and when abnormal conditions occur, energy The electric current in single cell is cut off, to avoid the battery pack coupling mechanism of cell thermal run away.

To achieve these goals, the utility model provides a kind of battery pack coupling mechanism, including cell and difference An identical fusing is electrically connected in positive terminal and negative terminal located at cell two ends, the positive terminal and negative terminal Device, the device for fusing includes hollow insulation shell and is contained in the fuse of insulation shell；The positive terminal is included provided with outer The stud of screw thread and the first weld part of connection cell electrode, the stud are individually fixed in one with first weld part The two ends and interval of the insulation shell of individual device for fusing relatively, the fuse are passed through between the stud and first weld part It is electrically connected with；The negative terminal includes the second weld part for setting female nut and connection cell electrode, the spiral shell Two ends of female insulation shell that another device for fusing is individually fixed in second weld part and interval is relative, the nut with It is electrically connected between second weld part by the fuse；The stud being capable of screw thread cooperation with nut.

Improved as one kind of the utility model battery pack coupling mechanism, the insulation shell is shaped as cylinder, and wraps The abutting end of the housing of hollow cylindrical and the hollow cylindrical positioned at housing two ends is included, and the abutting end and the housing are same The external diameter of axle and abutting end is less than the external diameter of housing；One of insulation shell by the abutting end fix the stud with it is described First weld part, another insulation shell fixes the nut and second weld part by the abutting end.

Improved as one kind of the utility model battery pack coupling mechanism, the stud exists respectively with first weld part First mounting groove at corresponding matching end is offered on end face close to each other, the nut is with second weld part respectively in phase Second mounting groove at corresponding matching end is mutually offered on close end face.

Improved as one kind of the utility model battery pack coupling mechanism, end of the nut away from second mounting groove Inward-facing to be arranged with shrinkage pool, the inner surface of the shrinkage pool is provided with internal thread.

Improved as one kind of the utility model battery pack coupling mechanism, the shape of second weld part is in six prisms Shape.

Improved as one kind of the utility model battery pack coupling mechanism, the shape of first weld part is in cylinder.

Compared with prior art, the beneficial effect of the utility model battery pack coupling mechanism is：It is electric between cell Property connection it is reliable and stable and assembling is simple, while be provided with fuse on positive and negative pole, when abnormal conditions occur for battery pack, if Fuse in abnormal cell one end can fuse cut-out electric current, so as to avoid cell from thermal runaway or the feelings of failure occur Condition, and then avoid battery pack from producing on fire or blast potential safety hazard because of abnormal cell thermal runaway or failure.

【Brief description of the drawings】

Fig. 1 is the assembling stereogram of the utility model battery pack coupling mechanism and cell；

Fig. 2 is the stereogram of the device for fusing of the utility model battery pack coupling mechanism；

Fig. 3 is the three-dimensional exploded view of positive terminal and device for fusing in the utility model battery pack coupling mechanism；

Fig. 4 is the three-dimensional exploded view of negative terminal and device for fusing in the utility model battery pack coupling mechanism；

Fig. 5 is the structural representation of the battery pack assembled with the utility model battery pack coupling mechanism.

【Embodiment】

In order that the purpose of this utility model, technical scheme and advantageous effects become apparent from understanding, below in conjunction with attached Figure and embodiment, the utility model is further elaborated.It should be appreciated that described in this specification Embodiment is not intended to limit the utility model just for the sake of explaining the utility model.

It refer to Fig. 1, a kind of battery pack coupling mechanism 100 that the utility model is provided, including cell 10 and difference Positive terminal 20 and negative terminal 30 located at the two ends of cell 10, and the positive terminal 20 and negative terminal 30 are electrically connected one Individual structure identical device for fusing 40.

Fig. 2 is refer to, the device for fusing 40 includes hollow insulation shell 401 and is contained in the fuse of insulation shell 401 402, the insulation shell 401 is shaped as cylinder, and the housing 4011 including hollow cylindrical and positioned at the two ends of housing 4011 Hollow cylindrical abutting end 4012.In the present embodiment, the abutting end 4012 and the housing 4011 are coaxial and match somebody with somebody The external diameter for closing end is less than the external diameter of housing 4011.

Fig. 1 and Fig. 3 is refer to, the positive terminal 20 is included provided with externally threaded stud 201 and the electricity of connection cell 10 First weld part 202 of pole, the stud 201 is individually fixed in the two ends of an insulation shell 401 with first weld part 202 And interval is relative, and it is electrically connected between the stud 201 and first weld part 202 by the fuse 402.Specifically , the stud 201 offers corresponding matching end 4012 on end face close to each other respectively with first weld part 202 First mounting groove 203.The insulation shell 401 is fixed by the cooperation of first mounting groove 203 and the abutting end 4012 The stud 201 and first weld part 202.In the present embodiment, the weld part 202 of stud 201 and first is all It is made of copper material, and first weld part 202 is in cylinder.In other embodiments, first weld part 202 Can be cuboid or other shapes.

Fig. 1 and Fig. 4 is refer to, the negative terminal 30 includes setting female nut 301 and the electricity of connection cell 10 Second weld part 302 of pole, the nut 301 is individually fixed in the two ends of an insulation shell 401 with second weld part 302 And interval is relative, and it is electrically connected between the nut 301 and second weld part 302 by the fuse 402.Specifically , the nut 301 offers the corresponding abutting end on end face close to each other respectively with second weld part 302 4012 the second mounting groove 303, while end face of the nut 301 away from second mounting groove 303 is concaved with shrinkage pool 304, the inner surface of the shrinkage pool 304 is provided with internal thread.Institute is made by the cooperation of second mounting groove 303 and abutting end 4012 State insulation shell 4012 and fix the nut 301 and second weld part 302.The nut 301 being capable of spiral shell with the stud 201 Line coordinates, and the shape of second weld part 302 is in hexa-prism, so that assembly tool utilizes second weld part 302 lock the stud 201 and nut 301.In the present embodiment, the nut 301 and second weld part 302 be all It is made of copper material.In other embodiments, the shape of the second weld part 302 can be in cylinder or other shapes.

In the utility model battery pack coupling mechanism, the position of the stud 201 and the nut 301 can be exchanged, I.e. described nut 301 is located at the positive terminal 20, and the stud 201 is located at the negative terminal 30.

Fig. 1 and Fig. 5 is refer to, string is accomplished by the following way simultaneously in the utility model battery pack coupling mechanism in battery pack Connection：Multiple positive terminals 20 are assembled with the device for fusing 40 respectively with the negative terminal 30 first, then will be equipped with melting The positive terminal 20 of disconnected device 40 is respectively welded on the electrode end surface of cell 10 with negative terminal 30, is secondly welded multiple Cell be divided into some batteries in parallel connection groups, a cylinder manifold is electrically connected in the positive pole and negative pole of the batteries in parallel connection group 50, string is cooperatively formed by the stud 201 and the nut 301 between the cell of two neighboring batteries in parallel connection group Connection.The cylinder manifold 50 is made of steel plate or nickel strap, and the internal resistance of steel plate or nickel strap is minimum, and the effective electrokinetic cell that improves is in charge and discharge CURRENT DISTRIBUTION in electric process.

The utility model is not restricted to described in specification and embodiment, therefore for the personnel of familiar field For additional advantage and modification is easily achieved, therefore in the universal limited without departing substantially from claim and equivalency range Spirit and scope in the case of, the utility model is not limited to specific details, representational equipment and shown here as with retouching The examples shown stated.

Claims (6)

1. a kind of battery pack coupling mechanism, including cell and the positive terminal and negative terminal that are respectively arranged on cell two ends, It is characterized in that：An identical device for fusing is electrically connected in the positive terminal and negative terminal, and the device for fusing includes Hollow insulation shell and the fuse for being contained in insulation shell；The positive terminal is included provided with externally threaded stud and connection monomer electricity First weld part of pond electrode, the stud is individually fixed in the two of the insulation shell of a device for fusing with first weld part Hold and interval is relative, be electrically connected between the stud and first weld part by the fuse；The negative terminal bag The second weld part for setting female nut and connection cell electrode is included, the nut is distinguished with second weld part It is fixed on the two ends of the insulation shell of another device for fusing and interval is relative, passes through between the nut and second weld part The fuse is electrically connected with；The stud being capable of screw thread cooperation with nut.

2. battery pack coupling mechanism according to claim 1, it is characterised in that：The insulation shell is shaped as cylinder, And the abutting end of the housing including hollow cylindrical and the hollow cylindrical positioned at housing two ends, and the abutting end and the shell Body is coaxial and external diameter of abutting end is less than the external diameter of housing；One of insulation shell by the abutting end fix the stud with First weld part, another insulation shell fixes the nut and second weld part by the abutting end.

3. battery pack coupling mechanism according to claim 2, it is characterised in that：The stud and first welding portion First mounting groove at corresponding matching end is not offered on end face close to each other, the nut is distinguished with second weld part Second mounting groove at corresponding matching end is offered on end face close to each other.

4. battery pack coupling mechanism according to claim 3, it is characterised in that：The nut is away from second mounting groove End face be concaved with shrinkage pool, the inner surface of the shrinkage pool is provided with internal thread.

5. battery pack coupling mechanism according to claim 3, it is characterised in that：The shape of second weld part is in six ribs Column.

6. battery pack coupling mechanism according to claim 3, it is characterised in that：The shape of first weld part is in cylinder Shape.