CN219017857U - Connecting assembly of battery module - Google Patents

Abstract

The utility model relates to the technical field of batteries, and discloses a connecting assembly of a battery module, which comprises the following components: the first conductive core is provided with a first concave part; the second conductive core is arranged in a lamination manner with the first conductive core, one end of the first conductive core and one end of the second conductive core are provided with first connecting parts, the other ends of the first conductive core and the second conductive core are provided with second connecting parts, and the first connecting parts and the second connecting parts are both used for being connected with the battery; the second conductive core is provided with a second concave part, the second concave part and the first concave part are surrounded to form a hollowed-out area, and the first concave part and the second concave part are bent. The utility model has the advantages that the connecting component conducts electricity through the first conductive core and the second conductive core which are arranged in a laminated way, the current carrying area is large, a hollowed-out area is formed between the first conductive core and the second conductive core, a deformation space is provided, and the rigid copper bar has relative flexibility and is used for absorbing the vibration of the connection between the batteries.

Description

Connecting assembly of battery module

Technical Field

The utility model relates to the technical field of batteries, in particular to a connecting assembly of a battery module.

Background

The battery module is a core part of a new energy automobile, the battery module is generally formed by connecting a plurality of batteries in series and parallel, and the batteries are generally connected and conducted by adopting high-voltage copper bars.

Most of the existing high-voltage copper bars adopt simple rigid design, namely flat plate type design, and two ends of the high-voltage copper bars are directly connected with a battery, but the flat plate type high-voltage copper bars are easy to brittle fracture in the vibration process due to the fact that the automobile usually vibrates repeatedly in the actual use process; the existing high-voltage copper bar is usually of a single design, and the current carrying area is small; in addition, the whole length of current copper bar sheath is fixed, can't adjust according to the position that copper bar both ends are connected with the battery, and this sheath protectiveness is relatively poor, has the electric shock risk.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model aims to solve the technical problem of providing a connecting component of a battery module with good anti-seismic performance and large current carrying area.

The utility model solves the technical problems by providing a connecting component of a battery module, which comprises:

the first conductive core is provided with a first concave part;

the second conductive core is arranged in a lamination manner with the first conductive core, a first connecting part is arranged at one end of the first conductive core and one end of the second conductive core, a second connecting part is arranged at the other end of the first conductive core and the second conductive core, and the first connecting part and the second connecting part are both used for being connected with a battery;

the second conductive core is provided with a second concave part, the second concave part and the first concave part are surrounded to form a hollowed-out area, and the first concave part and the second concave part are bent.

Further, the battery fixing device further comprises two fixing pieces, wherein a first through hole is formed in the two first connecting portions, a second through hole is formed in the two second connecting portions, and one ends of the two fixing pieces penetrate through the first through hole and the second through hole respectively and are connected with the battery.

Further, the first through hole or the second through hole is a waist hole, the fixing piece can translate in the waist hole, and the hollowed-out area is arranged at one end of the first conductive core or the second conductive core far away from the waist hole.

Further, the first conductive core and the second conductive core are symmetrically arranged.

Further, the thickness of the first connecting portion is equal to that of the second connecting portion, and the thickness of the first concave portion and the thickness of the second concave portion are smaller than that of the first connecting portion or the second connecting portion.

Further, the novel electric cable further comprises a first protective shell and a second protective shell which are connected in a telescopic mode, the first protective shell and the second protective shell are sleeved on the first conductive core and the second conductive core, the first connecting portion is exposed out of the first sheath, and the hollow-out area and the second connecting portion are wrapped in the second protective shell.

Further, the first protective shell and the second protective shell comprise a first shell and a second shell which are buckled with each other.

Further, the device further comprises a third protective shell, wherein the third protective shell is wrapped on the first connecting part and one of the fixing pieces, and one end of the third protective shell is sleeved on the first protective shell in a telescopic mode.

Further, the fixing piece comprises a head and a screw rod, the third protective shell comprises a main body, a first insulating sleeve and a fastening sleeve, an accommodating groove for the screw rod to pass through is formed in the main body, and the accommodating groove is communicated with the first through hole or the second through hole;

the first insulating sleeve is wrapped on the head, the fastening sleeve can tightly support the first insulating sleeve on the first conductive core, a clamping groove is formed in the main body, a clamping block is arranged on the fastening sleeve, and the clamping block is clamped with the clamping groove.

Further, one end of the screw rod, which is far away from the head part, is sleeved with a second insulating sleeve.

Compared with the prior art, the utility model has at least the following beneficial effects:

in the utility model, the connecting component conducts electricity through the first conductive core and the second conductive core which are arranged in a stacking way, and the first concave part and the second concave part are respectively arranged on the first conductive core and the second conductive core so as to form a hollowed-out area between the first conductive core and the second conductive core, and the hollowed-out area provides a deformation space for the first conductive core and the second conductive core, so that the rigid first conductive core and the second conductive core have relative flexibility and are used for absorbing the vibration connected between batteries; the battery modules are jointly conductive through the first conductive core and the second conductive core which are stacked, so that the current carrying area is increased, and the heat loss is reduced;

meanwhile, the hollowed-out area is arranged at one end of the first conductive core or the second conductive core, the other end of the hollowed-out area is provided with a waist hole, and the fixing pieces can translate in the waist hole, so that the two ends of the first conductive core and the second conductive core can adjust the distance between the two fixing pieces, and the problem that the battery module cannot be connected with the first connecting part or the second connecting part due to the integral processing error of the battery module is solved;

in addition, wrap up first conductive core and second conductive core through first shell, second shell and third shell, make first conductive core and second conductive core can still be wrapped up completely when length variation, avoid the electric shock, and the setting of fastening cover in the third shell promotes the stability that first insulating cover and mounting's head is connected, prevents to lead to first insulating cover to break away from because of vehicle vibration, guarantees the protectiveness of mounting and first conductive core and second conductive core junction, prevents to electrocute.

Drawings

FIG. 1 is a schematic diagram of a first conductive core and a second conductive core according to the present utility model;

FIG. 2 is an exploded view of FIG. 1;

FIG. 3 is a front view of FIG. 1;

fig. 4 is a schematic structural diagram of the first conductive core, the second conductive core and the fixing member;

FIG. 5 is a schematic view of the structure of FIG. 4 after the first protective case, the second protective case and the second insulating cover are sleeved;

FIG. 6 is an exploded view of FIG. 5;

FIG. 7 is a schematic view of the overall structure of the connecting assembly of the present utility model;

fig. 8 is an exploded view of the third casing.

In the figure:

100. a first conductive core; 110. a first concave portion; 120. a first connection portion; 121. a first through hole; 130. a second connecting portion; 131. a second through hole; 200. a second conductive core; 210. a second concave portion; 220. a hollowed-out area; 300. a fixing member; 310. a head; 320. a screw; 400. a first protective case; 500. a second protective shell; 510. a first housing; 520. a second housing; 600. a third protective shell; 610. a main body; 620. a first insulating sleeve; 630. a fastening sleeve; 700. and a second insulating sleeve.

Detailed Description

The following are specific embodiments of the present utility model and the technical solutions of the present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.

As shown in fig. 1 to 8, a connection assembly of a battery module includes: a first conductive core 100, wherein a first concave portion 110 is provided on the first conductive core 100; the second conductive core 200 is stacked with the first conductive core 100, a first connection part 120 is arranged at one end of the first conductive core 100 and one end of the second conductive core 200, a second connection part 130 is arranged at the other end of the first conductive core 100 and the second conductive core 200, and the first connection part 120 and the second connection part 130 are both used for being connected with a battery; the second conductive core 200 is provided with a second concave portion 210, and the second concave portion 210 and the first concave portion 110 are surrounded to form a hollowed-out area 220; and the first concave portion 110 and the second concave portion 210 are both arranged in a bending manner.

Specifically, a conductive connecting piece is generally disposed on the battery, and the first connecting portion 120 and the second connecting portion 130 are respectively used for connecting with the two conductive wire connecting pieces, so as to realize the overall conduction of the battery module; according to the scheme, the first conductive core 100 and the second conductive core 200 are rigid copper bars, and the first concave part 110 and the second concave part 210 are respectively arranged on the first conductive core 100 and the second conductive core 200, and the hollowed-out area 220 formed by the first concave part 110 and the second concave part 210 provides a deformation space for the first conductive core 100 and the second conductive core 200, so that the rigid first conductive core 100 and the rigid second conductive core 200 have relative flexibility and are used for absorbing the vibration connected between batteries; meanwhile, the first conductive core 100 and the second conductive core 200 which are stacked and arranged between the battery modules conduct electricity together, so that the current carrying area is increased, and the heat loss is reduced.

The connecting assembly further comprises two fixing pieces 300, wherein a first through hole 121 is formed in the two first connecting portions 120, a second through hole 131 is formed in the two second connecting portions 130, and one ends of the two fixing pieces 300 respectively penetrate through the first through hole 121 and the second through hole 131 to be connected with a battery. The first conductive core 100 and the second conductive core 200 are tightly pressed together through the fixing piece 300, and the first conductive core 100 and the second conductive core 200 are connected with the conductive connecting sheet on the battery to realize the conduction between the batteries; when the automobile vibrates, the first conductive core 100 and the second conductive core 200 are slightly deformed through the hollowed-out area 220, the vibration is absorbed, and the first conductive core 100 and the second conductive core 200 are deformed in the same direction.

Preferably, the first through hole 121 or the second through hole 131 is a waist hole, the fixing member 300 may translate in the waist hole, and the hollowed-out area 220 is disposed at an end of the first conductive core 100 or the second conductive core 200 away from the waist hole. In actual use, the first through hole 121 is a waist hole, and the second through hole 131 is a circular hole; during installation, one ends of circular holes of the first conductive core 100 and the second conductive core 200 are fixed on the batteries, and then the positions of the fixing pieces 300 in the waist holes are adjusted according to the actual distances of connecting pieces on the two batteries, so that the problem that the fixing pieces cannot be connected with the first connecting part 120 or the second connecting part 130 due to the processing errors of the battery modules is solved; meanwhile, the hollowed-out areas 220 and the waist holes are respectively arranged at two ends of the first conductive core 100 or the second conductive core 200, so that assembly tolerance can be absorbed at two ends of the first conductive core 100 and the second conductive core 200, and assembly positions of the middle parts and other parts of the first conductive core 100 and the second conductive core 200 are not changed.

Further preferably, the first conductive core 100 and the second conductive core 200 are symmetrically disposed; that is, the first conductive core 100 and the second conductive core 200 have similar structures and can be formed by bending the same blank, so that the manufacturing cost is reduced, and the first concave portion 110 and the second concave portion 210 are only required to be arranged towards opposite directions during installation, so that the installation is convenient.

In this embodiment, the thicknesses of the first connection portion 120 and the second connection portion 130 are equal, and the thicknesses of the first recess portion 110 and the second recess portion 210 are smaller than the thicknesses of the first connection portion 120 or the second connection portion 130. That is, the first conductive core 100 and the second conductive core 200 conduct electricity together, so that the current carrying area is increased, and even if the thickness of the hollowed-out area 220 is smaller, the normal transmission of current between the batteries can be ensured, and the heat loss caused by the increase of resistance due to hollowed-out is avoided.

As shown in fig. 5 and 6, the connection assembly further includes a first protective case 400 and a second protective case 500 that are connected in a telescopic manner, the first protective case 400 and the second protective case 500 are respectively sleeved on the first conductive core 100 and the second conductive core 200, the first connection portion 120 is exposed out of the first sheath, and the hollowed-out area 220 and the second connection portion 130 are wrapped in the second protective case 500. Specifically, the second casing 500 is sleeved on one end of the first casing 400, and when the first recess 110 and the second recess 210 are deformed, the second casing 500 can move on the first casing 400 to adjust the overall length of the first casing 400 and the second casing 500 after being connected.

Preferably, the first casing 400 and the second casing 500 each include a first housing 510 and a second housing 520 that are fastened to each other. In a practical structure, the central lines of the first conductive core 100 and the second conductive core 200 are not in a straight line, and the first housing 510 and the second housing 520 which are mutually buckled are convenient for wrapping the first conductive core 100 and the second conductive core 200, and are convenient for disassembly and assembly.

As shown in fig. 5 to 8, the connection assembly further includes a third casing 600, the third casing 600 is wrapped around the first connection portion 120 and one of the fixing members 300, and one end of the third casing 600 is telescopically sleeved on the first casing 400. In actual use, the first protective case 400, the second protective case 500 and the third protective case 600 are all made of insulating materials, such as rubber, plastic and the like, and have good insulation property; and the third protective case 600 sleeved on the first protective case 400 ensures that the fixing piece 300 can move along the length direction of the first conductive core 100 or the second conductive core 200 along with the third protective case 600 after the fixing piece 300 is penetrated in the waist hole, so as to ensure that the fixing piece 300 is always wrapped.

Preferably, the fixing member 300 includes a head 310 and a screw 320, the third casing 600 includes a main body 610, a first insulating sleeve 620 and a fastening sleeve 630, and a receiving groove for the screw 320 to pass through is formed in the main body 610, and the receiving groove communicates with the first through hole 121 or the second through hole 131; the first insulating sleeve 620 is wrapped on the head 310, the fastening sleeve 630 may tightly support the first insulating sleeve 620 on the first conductive core 100, and the main body 610 is provided with a clamping groove, and the fastening sleeve 630 is provided with a clamping block, and the clamping block is clamped with the clamping groove. When the battery module is installed, the screw 320 sequentially passes through the first through hole 121 or the second through hole 131 and the accommodating groove to be in threaded connection with a screw cap or a threaded hole on the battery module, so as to fasten the first conductive core 100 and the second conductive core 200 on the battery; the main body 610 is first sleeved on the first protective shell 400, after the screw 320 is inserted in the accommodating groove, the first insulating sleeve 620 is wrapped on the head 310, and then the fastening sleeve 630 is clamped with the main body 610 to wrap the fixing piece 300, and the first insulating sleeve 620 is prevented from falling off during vibration of the automobile, and the clamped main body 610 and fastening sleeve 630 are convenient to disassemble and assemble.

It is further preferred that the end of the screw 320 remote from the head 310 is sleeved with a second insulating sleeve 700 to fully encase the exposed portion of the fastener without the risk of electric shock.

In this scheme, this battery module's coupling assembling wholly through the middle fretwork part of rigid punching press copper bar, the punching press copper bar of two same fretings stacks together, contracts through both ends mounting 300 and connects, and each protective case of outer dress avoids the electric shock, and when avoiding both ends fastener inefficacy in the vibration process, also can prevent the copper bar brittle failure in the vibration process.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

Furthermore, descriptions such as those referred to herein as "first," "second," "a," and the like are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or an implicit indication of the number of features being indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, the technical solutions of the embodiments of the present utility model may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, the combination of the technical solutions should be considered as not existing, and not falling within the scope of protection claimed by the present utility model.

Claims (10)

1. The utility model provides a coupling assembling of battery module which characterized in that includes:

the first conductive core is provided with a first concave part;

the second conductive core is arranged in a lamination manner with the first conductive core, a first connecting part is arranged at one end of the first conductive core and one end of the second conductive core, a second connecting part is arranged at the other end of the first conductive core and the second conductive core, and the first connecting part and the second connecting part are both used for being connected with a battery;

the second conductive core is provided with a second concave part, the second concave part and the first concave part are surrounded to form a hollowed-out area, and the first concave part and the second concave part are bent.

2. The connection assembly of a battery module according to claim 1, further comprising two fixing members, wherein a first through hole is formed in the two first connection portions, a second through hole is formed in the two second connection portions, and one ends of the two fixing members respectively penetrate through the first through hole and the second through hole to be connected with the battery.

3. The connection assembly of a battery module according to claim 2, wherein the first through hole or the second through hole is a waist hole, the fixing member can translate in the waist hole, and the hollowed-out area is disposed at one end of the first conductive core or the second conductive core away from the waist hole.

4. The connection assembly of a battery module according to claim 1, wherein the first conductive core and the second conductive core are symmetrically disposed.

5. The connection assembly of a battery module according to claim 1, wherein the first connection part and the second connection part have the same thickness, and the first recess part and the second recess part have a thickness smaller than that of the first connection part or the second connection part.

6. The connection assembly of a battery module according to claim 2, further comprising a first protective case and a second protective case which are connected in a telescopic manner, wherein the first protective case and the second protective case are sleeved on the first conductive core and the second conductive core, the first connection part is exposed out of the first protective case, and the hollowed-out area and the second connection part are wrapped in the second protective case.

7. The connection assembly of a battery module according to claim 6, wherein the first and second cases comprise first and second cases fastened to each other.

8. The connection assembly of a battery module according to claim 6, further comprising a third protective case wrapped around the first connection part and one of the fixing members, wherein one end of the third protective case is telescopically fitted over the first protective case.

9. The connection assembly of a battery module according to claim 8, wherein the fixing member comprises a head portion and a screw, the third casing comprises a main body, a first insulating sleeve and a fastening sleeve, a receiving groove for the screw to pass through is formed in the main body, and the receiving groove is communicated with the first through hole or the second through hole;

the first insulating sleeve is wrapped on the head, the fastening sleeve can tightly support the first insulating sleeve on the first conductive core, a clamping groove is formed in the main body, a clamping block is arranged on the fastening sleeve, and the clamping block is clamped with the clamping groove.

10. The connection assembly of a battery module according to claim 9, wherein a second insulating sleeve is sleeved on an end of the screw remote from the head.

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