CN216300789U

CN216300789U - Power battery package pencil mounting structure and power battery package's lower casing

Info

Publication number: CN216300789U
Application number: CN202122965120.3U
Authority: CN
Inventors: 杨宾
Original assignee: Svolt Energy Technology Co Ltd
Current assignee: Svolt Energy Technology Co Ltd
Priority date: 2021-11-29
Filing date: 2021-11-29
Publication date: 2022-04-15
Anticipated expiration: 2031-11-29

Abstract

The utility model provides a power battery pack wire harness installation structure and a lower shell of a power battery pack. According to the power battery pack wire harness installation structure, the wire harness installation groove is formed in the beam body, and the wire harness cover plate covers the groove, so that the installation of the wire harness on the beam body can be facilitated, the occupied space in the shell is reduced, and the protection effect on the wire harness can be achieved.

Description

Power battery package pencil mounting structure and power battery package's lower casing

Technical Field

The utility model relates to the technical field of power batteries, in particular to a power battery wiring harness mounting structure. The utility model also relates to a lower shell of the power battery pack provided with the power battery pack wiring harness installation structure.

Background

In the industries of electric automobiles and electric bicycles, the power battery pack replaces gasoline and diesel oil and is used as a running power supply of the electric automobiles or the electric bicycles. In a power Battery pack, information interaction is mainly realized among a BMS (Battery Management System, short for Battery Management System), a Battery module, and a BDU (Battery disconnection Unit, short for high voltage distribution box) through a wire harness.

When the wiring harness is arranged in the battery pack, the wiring harness is generally fixed through an additional wiring harness bracket or through mounting holes formed in the outer sides of the transverse and longitudinal beams of the lower shell of the battery pack. The arrangement scheme of the wiring harness not only can additionally increase the types and the number of parts in the power battery pack, but also can increase the occupied space in the battery pack. Simultaneously, still be unfavorable for down shell structure's mechanical stability, when the battery package appears the thermal runaway risk moreover, the pencil also directly receives the impact because of not protecting easily to the risk of burning out or short circuit appears, seriously influences the security of battery package.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention is directed to a power battery harness installation structure, so as to arrange a harness and have a better protection effect.

In order to achieve the purpose, the technical scheme of the utility model is realized as follows:

the utility model provides a power battery package pencil mounting structure, is including locating the roof beam body in the casing of power battery package, be equipped with on the roof beam body and follow the pencil mounting groove that the length direction of roof beam body extends, in be equipped with on the roof beam body cover in the pencil apron of the notch department of pencil mounting groove.

Furthermore, the wire harness cover plate comprises a cover plate main body, flanges turned towards the beam body are formed on two sides of the cover plate main body respectively, and the wire harness cover plate is connected with the beam body in a buckled mode through the flanges.

Furthermore, at least one side of the cover plate main body is provided with a pressing plate extending out of the beam body.

Further, the pressing plate and the cover plate main body are integrally formed.

Furthermore, foam is arranged on one side, close to the beam body, of the abutting plate.

Furthermore, one side of the wire harness cover plate, which at least faces the wire harness installation groove, is provided with foam.

Furthermore, the wire harness cover plate is clamped on the beam body.

Furthermore, a clamping hole is formed in the beam body, and a clamping head clamped in the clamping hole is arranged on the wiring harness cover plate.

Furthermore, at least one of the clamping holes is provided with a guide groove extending from the clamping hole to the notch, and the width of the notch of the guide groove is gradually reduced along the inserting direction of the clamping head.

Compared with the prior art, the utility model has the following advantages:

(1) according to the power battery pack wire harness installation structure, the wire harness installation groove is formed in the beam body, and the wire harness cover plate covers the groove, so that the installation of the wire harness on the beam body can be facilitated, the occupied space in the shell is reduced, and the protection effect on the wire harness can be achieved.

(2) The flanging has simple structure, is convenient to form and is convenient for buckling the cover plate main body on the beam body.

(3) The arrangement of the pressing plate is favorable for further improving the structural utilization rate of the wire harness cover plate.

(4) Support clamp plate and apron main part integrated into one piece, do benefit to and improve machining efficiency.

(5) The setting of supporting the cotton of bubble on the clamp plate can improve the result of use that supports the clamp plate.

(6) The foam on the wire harness cover plate is beneficial to improving the stability of the wire harness in the wire harness installation groove.

(7) The wiring harness cover plate is fixed on the beam body in a clamping mode, so that the wiring harness cover plate is convenient to mount, and the assembly efficiency is improved.

(8) The dop and the card hole have simple structure, are convenient for processing and forming, and have good clamping effect.

(9) Through setting up the guiding groove, can guide the dop of installation, do benefit to and improve assembly efficiency.

Another object of the present invention is to provide a lower casing of a power battery pack, wherein the power battery pack harness installation structure is arranged in the lower casing, and the beam body is formed by a cross beam or a longitudinal beam of the lower casing.

According to the lower shell of the power battery pack, the beam body is formed by the beams or the longitudinal beams of the lower shell, so that the structural utilization rate of the beams or the longitudinal beams can be improved, the occupation amount of the wiring harness arrangement on the space in the battery pack is reduced, a good protection effect is achieved, and the safety of the battery pack in use is improved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:

fig. 1 is a schematic structural diagram of a power battery pack harness installation structure according to a first embodiment of the present invention;

fig. 2 is a schematic structural diagram of a lower housing according to a first embodiment of the present invention;

fig. 3 is a schematic structural diagram of a cross beam according to a first embodiment of the present invention;

fig. 4 is a schematic structural diagram of a cross beam according to another view in the first embodiment of the present invention;

fig. 5 is a schematic structural diagram of a beam according to a first embodiment of the present invention;

fig. 6 is a schematic structural diagram of a beam body according to another view angle in the first embodiment of the present invention;

FIG. 7 is an enlarged view of portion A of FIG. 6;

fig. 8 is a schematic structural diagram of a wire harness cover plate according to a first embodiment of the present invention;

fig. 9 is a schematic structural diagram of a wire harness cover plate according to a first embodiment of the present invention at a second viewing angle;

fig. 10 is a schematic structural diagram of a wire harness cover plate according to the first embodiment of the present invention at a third viewing angle;

description of reference numerals:

1. a lower housing; 2. mica plates; 3. a wire harness cover plate; 4. a main control main wire harness;

100. dividing into spaces;

101. a first cross member; 1011. a beam body; 1012. a clamping hole; 1013. a wire harness mounting groove; 1014. lightening holes; 1015. a guide groove; 1016. an avoidance groove; 102. a second cross member; 103. a stringer; 1031. a protrusion;

301. a cover plate main body; 302. flanging; 3021. clamping a head; 303. pressing the plate; 3031. first foam; 304. third foam; 305. second foam;

401. a first branch harness; 402. a second branch harness.

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "back", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. In addition, the terms "first" to "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In addition, in the description of the present invention, the terms "mounted," "connected," and "connecting" are to be construed broadly unless otherwise specifically limited. For example, the connection can be fixed, detachable or integrated; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. To those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in conjunction with specific situations.

The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

Example one

The embodiment relates to a power battery package pencil mounting structure, including locating the roof beam body 1011 in the casing of power battery package. The beam body 1011 is provided with a wire harness installation groove 1013 extending in the longitudinal direction of the beam body 1011, and the beam body 1011 is provided with a wire harness cover plate 3 covering the groove of the wire harness installation groove 1013.

Based on the above overall description, the arrangement of the power battery pack harness mounting structure described in the present embodiment within the case is as shown in fig. 1 and 2. The housing in this embodiment includes a lower housing 1 and an upper housing, not shown, snap-fitted to the lower housing 1. Wherein an installation space for installing the battery module is formed in the lower case 1. A longitudinal beam 103 which is positioned in the middle of the lower shell 1 in the width direction and extends along the length direction of the lower shell 1, and a plurality of cross beams which extend along the width direction of the lower shell 1 are arranged at intervals along the length direction of the lower shell 1.

Because of crisscross arrangement in lower casing 1 of crossbeam and longeron 103 violently indulges, can separate into a plurality of minute spaces 100 that extend along lower casing 1 width direction and arrange with the installation space, have a plurality of battery module of arranging electric core constitution side by side and install respectively in each minute space 100. In addition, each battery module is covered with a mica plate 2 having an insulating function.

Wherein the cross member has a structure as shown in fig. 3 and 4, which crosses the width direction of the lower case 1 and has two portions symmetrically arranged and connected with respect to the longitudinal beams 103. The cross beam is preferably integrally formed. An escape groove 1016 is provided in the bottom of the cross member, and the escape groove 1016 is provided to escape a projection 1031 provided on both sides of the bottom of the side member 103 and extending in the longitudinal direction thereof. In specific implementation, the cross beam and the longitudinal beam 103 can be installed in the lower shell 1 by adopting a connection mode such as welding in the prior art.

Of course, besides the above-mentioned integrally formed processing method, the two cross beams may be respectively disposed at two sides of the longitudinal beam 103, and the two cross beams are respectively and independently fixed on the lower shell 1. The crossbeam also has better result of use this moment.

The battery pack is provided with a master control harness, which can be provided in the battery pack in the prior art, for connecting between each battery module and the BMS, BDU. As also shown in fig. 1 and 2, the main control harness in the present embodiment includes a main control main harness 4 provided on the side member 103 and arranged along the longitudinal direction of the side member 103, and a branch harness connected between each battery module and the main harness.

It should be noted that, in the prior art, the ends of the two adjacent battery modules in the battery pack, which are connected to the branch harnesses, are arranged in a staggered manner, so that the lengths of the branch harnesses connected to the two adjacent battery modules are different. For convenience of description below, in the present embodiment, an end of the branch wire harness disposed opposite to the main control main wire is referred to as a connection end. A branch harness in which a connection end is connected to one end of the battery module, which is far from the side member 103, is referred to as a first branch harness 401, and a branch harness in which a connection end is connected to one end of the battery module, which is near the side member 103, is referred to as a second branch harness 402. The first branch harnesses 401 cross the battery modules in the lengthwise direction of the battery modules.

The beam body 1011 in this embodiment is formed of a cross member or a longitudinal member 103 so as to be able to mount and protect the first branch wire harness 401 or the main control main wire harness 4. Of course, the harness installation groove 1013 on the beam body 1011 can be used for installation of a harness routed through the beam body 1011 in addition to the first branch harness 401 or the main control main harness 4. The structure of the power battery pack harness attachment structure will be described below with an example in which the beam body 1011 is configured as a cross beam, and in this case, the harness attachment groove 1013 is used to attach the first branch harness 401.

Referring to fig. 2, the connection end of each first branch strand 401 is located at an end of the corresponding branch space 100 remote from the longitudinal beam 103, and the connection end of each second branch strand 402 is disposed adjacent to the longitudinal beam 103. Therefore, as a preferred embodiment, the wire harness installation groove 1013 is provided in the embodiment, which is partially adjacent to the battery module connected to the first branch wire harness 401. The cross members having the harness installation grooves 1013 and the cross members not having the harness installation grooves 1013 are alternately arranged in the length direction of the lower case 1 based on the arrangement rule of the first branch strands 401 and the second branch strands 402.

For convenience of description, the beam having the harness installation groove 1013 is referred to as a first beam 101, and the beam not having the harness installation groove 1013 is referred to as a second beam 102. On the basis of the reference shown in fig. 2, the beams are sequentially a first beam 101, a second beam 102, and the like in the left-to-right direction.

As shown in fig. 2 to 4, the parts of the first cross beam 101 on the two sides of the longitudinal beam 103 in the embodiment form beam bodies 1011, the two beam bodies 1011 are connected to form a first cross beam 101, and the bottom of the connection between the two beam bodies 1011 is provided with the above-mentioned escape groove 1016. So configured, installation and placement of the first branch harness 401 within the battery pack is facilitated.

In order to make the structure of the harness installation groove 1013 and the harness cover 3 on the beam body 1011 more prominent, only the structure of one beam body 1011 is illustrated in fig. 5 and 6. The wire harness installation groove 1013 penetrates the top of the beam 1011 in the longitudinal direction of the beam 1011. The notch of the harness installation groove 1013 is located on the top surface of the beam body 1011, and the first branch harness 401 can be placed in the harness installation groove 1013 above the beam body 1011 via the notch. Here, by installing the first branch harnesses 401 in the harness installation grooves 1013, the space of the beam body 1011 is facilitated, and the amount of space occupied in the battery pack can be reduced.

Preferably, the bottom of the wire harness installation groove 1013 is an arc surface adapted to the specification of the wire harness, so as to facilitate the placement of the first branch wire harness 401 in the wire harness installation groove 1013 and to facilitate the prevention of the first branch wire harness 401 from shaking in the width direction of the wire harness installation groove 1013. In addition, a plurality of lightening holes 1014 arranged at intervals in the length direction of the beam body 1011 are provided at the top of the beam body 1011.

In order to further improve the installation effect of the first branch harness 401 in the harness installation groove 1013, the first branch harness 401 extending out of two ends of the harness installation groove 1013 may be further clamped in the installation holes at two ends of the beam 1011 by a bracket, so as to further improve the stability of the first branch harness 401 in the installation state.

In this embodiment, the structure of the wire harness cover plate 3 is as shown in fig. 8 to 10, and the wire harness cover plate 3 includes a cover plate main body 301, flanges 302 turned over toward the beam body 1011 are respectively formed on both sides of the cover plate main body 301, and the wire harness cover plate 3 is connected with the beam body 1011 by the flanges 302 in a snap-fit manner. Wherein, the two flanges 302 can be fastened to the outer side of the beam 1011 by the fastening method shown in the figure. In order to further improve the use effect of the wire harness cover plate 3, pressing plates 303 extending to the outside of the beam body 1011 are arranged on both sides of the cover plate main body 301. The pressing plate 303 can press against the mica plate 2, thereby facilitating the fixation of the battery module on the corresponding side.

In specific implementation, the pressing plate 303 and the cover plate main body 301 are integrally formed, so that the production efficiency is improved. As shown in fig. 8, the pressing plates 303 are three groups arranged at intervals along the length direction of the cover plate main body 301, each group of pressing plates 303 is separated by the flange 302, and two pressing plates 303 of each group of pressing plates 303 are pressed on the mica plates 2 on both sides, so that the improvement of the installation effect of the mica plates 2 is facilitated. Of course, the number of the pressing plates 303 may be adaptively increased or decreased according to specific use requirements.

In order to improve the effect of the pressing plates 303 in use, in the present embodiment, a first foam 3031 is disposed on a side of each pressing plate 303 close to the beam 1011, i.e., a side facing the mica board 2. At this time, the first foam 3031 can be fixed on the pressing plate 303 in an adhesion manner, and the mounting manner is simple and the using effect is good.

Of course, the embodiment may be arranged only on one side of the cover plate main body 301. At this time, the pressing plates 303 may be located on the same side of the cover plate body 301, or may be disposed on two sides of the cover plate body 301 in a staggered manner. However, in comparison, the pressing plates 303 are arranged along the direction of the cover plate main body 301 in a staggered manner, and can press against the mica plates 2 on both sides of the cover plate main body 301, so that the cover plate has a better use effect.

In a preferred embodiment, the harness cover plate 3 is clamped to the beam 1011. Specifically, as shown in fig. 6 and 10, the beam 1011 is provided with a locking hole 1012, and the harness cover 3 is provided with a locking head 3021 which is locked in the locking hole 1012. The clamp head 3021 protrudes from the inner surface of each flange 302 to be connected with the clamp hole 1012 in a snap-fit manner when the flange 302 is fastened outside the beam body 1011.

In specific implementation, the plurality of fastening holes 1012 are arranged at intervals on both sides of the beam 1011 along the length direction of the beam 1011, and the fastening holes 1012 are disposed through the wire harness installation grooves 1013. Of course, the number of the locking holes 1012 and the locking heads 3021 may be adaptively increased or decreased according to the use requirement, as long as the installation effect of the harness cover plate 3 on the beam body 1011 is satisfied.

When the two flanges 302 are buckled outside the beam body 1011, the bottom parts of the two flanges 302 are pushed by the clamping heads 3021 to be expanded outwards due to the abutting of the clamping heads 3021 on the side wall of the beam body 1011, until the clamping heads 3021 slide to the clamping holes 1012, the clamping heads 3021 can be clamped into the clamping holes 1012 along with the resetting of the flanges 302, and thus the fixing of the wiring harness cover plate 3 on the beam body 1011 is realized.

In this embodiment, the mode in which the clip 3021 is engaged with the clip hole 1012 to mount the wire harness cover plate 3 on the beam 1011 has an advantage of being simple to operate and being advantageous for improving the assembling efficiency. To facilitate the locking of the locking head 3021 into the locking hole 1012, as shown in fig. 7, at two locking holes 1012 on one side of the beam 1011, a guiding groove 1015 extending from the locking hole 1012 to a notch is provided on the beam 1011, and the notch of the guiding groove 1015 is outwardly expanded, i.e. the width of the notch of the guiding groove 1015 is gradually reduced along the insertion direction of the locking head 3021. The guide grooves 1015 can guide the corresponding clamp head 3021, so that the clamp head 3021 can be clamped with the clamping hole 1012 more accurately and smoothly.

In specific implementation, the guiding groove 1015 may be disposed on both sides of the beam 1011, in addition to one side of the beam 1011. The number of the guide grooves 1015 may be increased or decreased according to specific use requirements, as long as the clamping heads 3021 of the harness cover plate 3 can be clamped in the clamping holes 1012 to be guided.

It can be understood that, in the present embodiment, the clamping structure for clamping the harness cover plate 3 to the beam 1011 may also be other structures capable of realizing clamping connection between the clamp 3021 and the clamp hole 1012, besides the above-mentioned cooperation between the clamp and the beam. Besides the clamping connection, the harness cover plate 3 can be fixed on the beam body 1011 by a fastening component, such as a screw and nut fit manner, and in this case, the harness cover plate 3 can be mounted on the beam body 1011. However, compared with the clamping method, the method of fixing by the fastening assembly increases the number of parts, so that the method has advantages in production cost and assembly efficiency.

Further, as shown in fig. 1, foam is provided on both sides of the wire harness cover 3, wherein a second foam 305 facing the wire harness installation groove 1013 is arranged on the cover main body 301, the second foam 305 extending in the length direction of the cover main body 301 and being capable of pressing against the second branch wire harness 402. This is advantageous in preventing the second branch wiring harness 402 from shaking in the height direction of the wiring harness installation groove 1013 within the wiring harness installation groove 1013, and in improving the stability of the second branch wiring harness 402 in the installed state.

And a third foam 304 positioned on the other side of the wire harness cover plate 3, wherein the third foam 304 is also adhered to the cover plate main body 301 and extends along the length direction of the cover plate main body 301. The third foam 304 is favorable for improving the use effect of the wiring harness cover plate 3 in the battery pack. It should be noted that, in this embodiment, at least the second foam 305 should be disposed on the cover plate main body 301 to improve the installation stability of the second branch bundles 402 in the bundle installation groove 1013.

When the first branch wiring harness 401 in this embodiment is installed, the first branch wiring harness 401 is firstly placed in the wiring harness installation groove 1013 from the notch, then the first branch wiring harness 401 at two ends of the wiring harness installation groove 1013 is fixed at two ends of the beam body 1011 through the bracket, then the first branch wiring harness 401 is buckled at the top of the beam body 1011 through the turned-over edge 302 of the wiring harness cover plate 3, and the clamping head 3021 is clamped in the corresponding clamping hole 1012, so that the installation of the wiring harness cover plate 3 on the beam body 1011 can be realized. The first foam 3031 in the mounted state abuts against the mica board 2 due to the pressing down of the pressing plate 303, and the second foam 305 also abuts against the top of the first branch harness 401.

This embodiment power battery package pencil mounting structure through set up pencil mounting groove 1013 on roof beam body 1011 to and cover in the pencil apron 3 of notch department, not only can do benefit to the installation of pencil on roof beam body 1011, and reduce the volume of occuping of space in the casing, but also can play the effect of protection to the pencil.

Example two

The embodiment relates to a lower shell 1 of a power battery pack, wherein a wiring harness installation structure of the power battery pack is arranged in the lower shell 1, and a beam body 1011 is formed by a cross beam or a longitudinal beam 103 of the lower shell 1.

Here, when the beam body 1011 is formed of a cross beam, it can be used for mounting the first branch harness 401 described in the first embodiment, or other harnesses arranged along the cross beam. When the beam body 1011 is formed of the longitudinal beam 103, it can be used for installation of the main control main harness 4 described in one embodiment, or other harnesses arranged along the longitudinal beam 103.

The lower shell 1 of the power battery pack in the embodiment forms the beam body 1011 of the first embodiment through the beam or the longitudinal beam 103 of the lower shell 1, so that the structural utilization rate of the beam or the longitudinal beam 103 can be improved, the occupied space in the battery pack due to the wiring harness arrangement is reduced, and a better protection effect is achieved, thereby being beneficial to improving the safety of the battery pack in use.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides a power battery wiring harness mounting structure which characterized in that:

including locating roof beam body (1011) in the casing of power battery package, be equipped with on roof beam body (1011) and follow the pencil mounting groove (1013) that the length direction of roof beam body (1011) extends, in be equipped with on roof beam body (1011) cover in pencil apron (3) of the notch department of pencil mounting groove (1013).

2. The power battery pack harness mounting structure according to claim 1, wherein:

pencil apron (3) are including apron main part (301), the both sides of apron main part (301) are formed with the orientation respectively turn over flange (302) that roof beam body (1011) turned over, pencil apron (3) pass through flange (302) with roof beam body (1011) lock links to each other.

3. The power battery pack harness mounting structure according to claim 2, wherein:

and at least one side of the cover plate main body (301) is provided with a pressing plate (303) extending out of the beam body (1011).

4. The power battery pack harness mounting structure according to claim 3, wherein:

the pressing plate (303) and the cover plate main body (301) are integrally formed.

5. The power battery pack harness mounting structure according to claim 3, wherein:

one side of the pressing plate (303) close to the beam body (1011) is provided with foam.

6. The power battery pack harness mounting structure according to claim 2, wherein:

and foam is arranged on one side, facing the wire harness installation groove (1013), of the wire harness cover plate (3) at least.

7. The power battery pack harness mounting structure according to any one of claims 1 to 6, wherein:

the wire harness cover plate (3) is clamped on the beam body (1011).

8. The power battery pack harness mounting structure according to claim 7, wherein:

the beam body (1011) is provided with a clamping hole (1012), and the wiring harness cover plate (3) is provided with a clamping head (3021) clamped in the clamping hole (1012).

9. The power battery pack harness mounting structure according to claim 8, wherein:

at least one clamping hole (1012) of the beam body (1011) is provided with a guide groove (1015) extending from the clamping hole (1012) to a notch of the wiring harness installation groove (1013), and the width of the notch of the guide groove (1015) is gradually reduced along the insertion direction of the clamping head (3021).

10. A lower casing (1) of a power battery pack, characterized in that: the power battery pack harness mounting structure according to any one of claims 1 to 9 is provided in the lower case (1), and the beam body (1011) is constituted by a cross member or a longitudinal member (103) of the lower case (1).