CN218333975U

CN218333975U - Battery package liquid cold junction, battery package casing and battery package

Info

Publication number: CN218333975U
Application number: CN202222378467.2U
Authority: CN
Inventors: 刘振岗; 朱金鑫; 李金鹏
Original assignee: Great Wall Motor Co Ltd
Current assignee: Great Wall Motor Co Ltd
Priority date: 2022-09-07
Filing date: 2022-09-07
Publication date: 2023-01-17
Anticipated expiration: 2032-09-07

Abstract

The utility model provides a battery package liquid cold joint, battery package casing and battery package, the utility model discloses a battery package liquid cold joint connects on the battery package casing to including connecting the body, this internal inlet channel and the liquid outlet channel that is linked together that have of this connects, inlet channel's axis is parallel with liquid outlet channel's axis, and inlet channel's axis biasing is in one side of liquid outlet channel's axis. Battery package liquid cold joint, it is parallel through the axis with inlet channel and outlet channel's axis to make inlet channel's axis biasing in one side of outlet channel's axis, can make from this that the joint body is located the internal part of battery cladding and more be close to the lateral wall of battery cladding casing, thereby can increase the distance between joint body and the battery module, need not the size of increase battery cladding casing.

Description

Battery package liquid cold junction, battery package casing and battery package

Technical Field

The utility model relates to a battery package coupling technical field, in particular to battery package liquid cold joint, simultaneously, the utility model discloses still relate to the battery package casing that is equipped with this battery package liquid cold joint to and have the battery package of this battery package casing.

Background

With the rapid development of new energy industry, the battery application field is wider, the battery can generate certain heat no matter in a charging state or a discharging state, and when the heat is too high, the battery can have adverse effects on the capacity, the power, the charging and discharging efficiency, the safety, the service life and the like of the battery. Therefore, a liquid cooling pipe is usually arranged in a general battery pack, and liquid is fed into and discharged from the liquid cooling pipe through a liquid cooling joint arranged on a battery pack shell. And have arranged parts such as a plurality of battery modules, pencil pipeline usually in the battery package, the liquid cooling connects and generally arranges the position that is close to battery package casing side, because of each bight of battery package casing generally is the fillet, the liquid cooling connects the edge that needs and battery package and has a certain interval, leads to the interval between liquid cooling joint and the battery module less, if will increase the interval, then need increase the size of battery package casing, is unfavorable for the compactness design of battery package.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a battery package liquid cold junction, it can increase and the interval between the battery module.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

the utility model provides a battery package liquid cold joint, connects on battery package casing, includes the joint body, connect this internal inlet channel and the liquid outlet channel that is linked together that have, inlet channel's axis is parallel with liquid outlet channel's axis, and inlet channel's axis offset is in one side of liquid outlet channel's axis.

Further, an overlapping area is formed between the liquid inlet channel and the liquid outlet channel, and the liquid inlet channel and the liquid outlet channel are directly communicated through the overlapping area.

Further, the overlapping length of the overlapping area in the axial direction of the liquid outlet channel is not less than 6mm.

Further, the distance L between the axis of the liquid inlet channel and the axis of the liquid outlet channel, and the inner diameter d1 of the liquid inlet channel and the inner diameter d2 of the liquid outlet channel satisfy the following relations:

L＜(d1+d2)/2。

further, be equipped with the installation department on the joint body, the installation department be used for with the joint body can be dismantled and connect on the battery package casing.

Further, the installation department is including locating connect the external screw thread on the body, connect the body through with external screw thread complex nut is installed on the battery package casing.

Furthermore, be equipped with on the joint body along the radial evagination's of inlet channel outward convex part, the external screw thread is located outward convex part is divided.

Further, the joint body is provided with an installation groove arranged at a distance from the external thread, and the installation groove is used for installing a sealing element abutted against the battery pack shell.

Compared with the prior art, the utility model discloses following advantage has:

battery package liquid cold joint, it is parallel through the axis with inlet channel and outlet channel's axis to make inlet channel's axis biasing in one side of outlet channel's axis, can make from this that the joint body is located the internal part of battery cladding and more be close to the lateral wall of battery cladding casing, thereby can increase the distance between joint body and the battery module, and need not to increase the size of battery cladding casing.

In addition, feed liquor passageway and play liquid channel are through the regional intercommunication of overlapping between the two, compare in the additional structure that sets up the passageway and communicate feed liquor passageway and play liquid channel, are favorable to reducing the structure volume of this battery package liquid cold joint. The overlapping length of the overlapping area in the axial direction of the liquid outlet channel is set to be not less than 6mm, so that the overlarge flow resistance caused by the fact that the liquid inlet channel and the liquid outlet channel are not coaxial can be effectively prevented.

Further, setting L to be smaller than (d 1+ d 2)/2 makes it possible to make the liquid inlet passage and the liquid outlet passage have an overlapping portion in the radial direction of the liquid outlet passage, and fluid resistance can be further reduced. The installation department not only is convenient for manufacturing including locating the external screw thread on connecting the body, also is convenient for simultaneously connect the dismouting of body on the battery can shell. Through set up the mounting groove that is used for installing the sealing member on connecting the body, can improve the sealed effect between connecting body and the battery package casing.

Another object of the present invention is to provide a battery pack case, wherein the battery pack case is provided with the above liquid cooling connector.

Battery package casing, through setting up as above battery package liquid cold joint, need not great size, can make the distance between battery package liquid cold joint and the battery module meet the demands.

Furthermore, the utility model discloses still provide a battery package, the battery package is equipped with as above battery package casing.

Battery package, through being equipped with as above battery package casing, can improve its compact structure nature.

Drawings

The accompanying drawings, which form a part of the present disclosure, are included to provide a further understanding of the present disclosure, and are incorporated in and constitute a part of this specification, illustrate embodiments of the present disclosure and together with the description serve to explain the present disclosure. In the drawings:

fig. 1 is a schematic structural view of a liquid-cooled joint of a battery pack according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a battery pack liquid-cooled joint according to an embodiment of the present invention at another viewing angle;

FIG. 3 is a bottom view of FIG. 2;

FIG. 4 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 3;

fig. 5 is an assembly state diagram of the battery pack liquid cooling joint, the nut and the sealing member according to the embodiment of the present invention;

fig. 6 is an assembly state diagram of a battery pack liquid cooling joint on a battery pack lower shell according to an embodiment of the invention;

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

fig. 8 is an assembly state diagram of the liquid-cooled joint of the battery pack according to the embodiment of the present invention at another viewing angle on the lower case of the battery pack;

fig. 9 is an enlarged view of a portion C in fig. 8.

Description of the reference numerals:

1. a connector body; 2. a nut; 3. a seal member; 4. a battery pack lower case;

101. a liquid inlet pipe; 1011. a liquid inlet channel; 102. a liquid outlet pipe; 1021. a liquid outlet channel; 103. a convex portion; 104. and (4) mounting the groove.

Detailed Description

It should be noted that, in the case of no conflict, the embodiments and features of the embodiments of the present invention may be combined with each other.

In the description of the present invention, it should be noted that if terms indicating directions or positional relationships such as "up", "down", "inside", "outside", etc. appear, they are based on the directions or positional relationships shown in the drawings, and are only for convenience of description of the present invention and simplification of description, but do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention. Furthermore, the appearances of the terms first, second, etc. in this specification are not necessarily all referring to the same item, but are instead intended to cover the same item.

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 meaning of the above terms in the present invention can be understood in combination with the specific situation.

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

The embodiment relates to a battery package liquid cold joint, connects on the battery package casing to including connecting body 1, this connects and has liquid inlet channel 1011 and liquid outlet channel 1021 that are linked together in the body 1, and the axis of liquid inlet channel 1011 is parallel with the axis of liquid outlet channel 1021, and the axis offset of liquid inlet channel 1011 is in one side of the axis of liquid outlet channel 1021.

The battery package liquid cold joint of this embodiment is through the axis with feed liquor channel 1011 and the axis of liquid outlet channel 1021 parallel to the axis offset that makes feed liquor channel 1011 is in one side of liquid outlet channel 1021's axis, can make from this and connect the part that body 1 is located in the battery package casing more be close to the lateral wall of battery package casing, thereby can increase the distance between joint body 1 and the battery module, need not to increase the size of battery package casing.

Based on the above general description, an exemplary structure of the battery pack liquid-cooled joint of the present embodiment is described with reference to fig. 1 to 4, and also with reference to application state diagrams of the battery pack liquid-cooled joint shown in fig. 5 to 9, and specifically with reference to an application scenario in which the battery pack liquid-cooled joint is disposed at a liquid inlet of a liquid-cooled pipe. At this time, based on the state shown in fig. 1, the inner space of the left end of the joint body 1 forms the liquid inlet channel 1011, and the inner space of the right end forms the liquid outlet channel 1021. It can be understood that when the liquid-cooling joint of the battery pack is arranged at the liquid outlet of the liquid-cooling pipe, the inner space at the left end of the joint body 1 in the state of fig. 1 forms the liquid outlet channel 1021, and the inner space at the right end forms the liquid inlet channel 1011.

Specifically, referring to fig. 1 and 2, the joint body 1 of the present embodiment includes a main body portion in the middle, and a liquid inlet pipe 101 and a liquid outlet pipe 102 respectively disposed at both ends of the main body portion, and the main body portion has a radial dimension larger than that of the liquid inlet pipe 101 and the liquid outlet pipe 102. The axis of the liquid inlet pipe 101 coincides with the axis of the main body, and the axis of the liquid outlet pipe 102 is offset to one side of the axis of the main body. In addition, the outer walls of the liquid inlet pipe 101 and the liquid outlet pipe 102 are respectively provided with an annular bulge to be connected with the quick-plug connector in a plug-in manner.

In order to effectively reduce the structural volume of the joint body 1, as a preferred embodiment, as shown in fig. 4, an overlapping area is provided between the liquid inlet channel 1011 and the liquid outlet channel 1021, and the liquid inlet channel 1011 and the liquid outlet channel 1021 are directly communicated through the overlapping area. Of course, besides the liquid inlet channel 1011 and the liquid outlet channel 1021 are communicated through the overlapped area, a communication channel can be arranged between the liquid inlet channel 1011 and the liquid outlet channel 1021, and at the moment, the volume of the joint body 1 is obviously increased, which is not beneficial to improving the structural compactness of the battery pack.

In addition, in order to effectively reduce the fluid resistance, as shown in fig. 4, the overlapping length H of the overlapping area in the axial direction of the liquid outlet passage 1021 is not less than 6mm, for example, H may be set to 6mm, 7mm, or other values. Of course, when other constraints exist, the overlap length H may also be made less than 6mm. In this embodiment, to further improve the using effect, still referring to fig. 4, the distance L between the axis of the liquid inlet channel 1011 and the axis of the liquid outlet channel 1021, and the inner diameter d1 of the liquid inlet channel 1011 and the inner diameter d2 of the liquid outlet channel 1021 satisfy the following relationship: l < (d 1+ d 2)/2. With such an arrangement, the liquid inlet passage 1011 and the liquid outlet passage 1021 have an overlapping portion in the radial direction of the liquid outlet passage 1021, and the fluid resistance can be further reduced.

In addition, a mounting portion for detachably connecting the connector body 1 to the battery pack case is provided on the connector body 1. As a preferred embodiment, as shown in fig. 1, 2, 5 and 7, the mounting portion includes a male screw, not shown, provided on the connector body 1, and the connector body 1 is mounted on the battery pack case by a nut 2 fitted to the male screw. In order to be able to mount and dismount the liquid-cooled joint outside the battery case body, the external thread of the present embodiment is specifically provided at one end of the main body part close to the liquid inlet pipe 101.

Still referring to fig. 1 and 2, in order to facilitate the insertion of the nut 2, a convex portion 103 protruding radially of the liquid inlet passage 1011 is provided on the joint body 1, and an external thread is provided on the convex portion 103. By providing the external thread on the convex portion 103, the nut 2 having a large inner diameter can be matched, so that the liquid inlet pipe 101 can be easily passed through the nut 2. As a further embodiment, as shown in fig. 1, 2 and 9 in conjunction, a mounting groove 104 is also provided on the joint body 1, the mounting groove 104 being spaced apart from the external thread for mounting the sealing member 3 in abutment with the battery pack housing. Wherein, the sealing element 3 can adopt a conventional rubber gasket.

When the battery pack liquid-cooling joint of the embodiment is used, the sealing element 3 is firstly arranged in the mounting groove 104, then, one end of the joint body 1 with the external thread penetrates out of the interior of the battery pack shell, and then the joint body 1 is rotated, so that the liquid outlet pipe 102 is close to the side wall of the battery pack shell. And finally, screwing the nut 2 on the external thread of the joint body 1 until the sealing element 3 abuts against the inner wall of the battery pack shell, and then finishing the installation of the battery pack liquid-cooled joint.

The battery package liquid cooling joint of this embodiment through adopting above structure, need not the size of increase battery package casing, also can increase the distance between joint body 1 and the battery module, on the basis that satisfies the liquid cooling system flow resistance requirement, makes the whole size of battery package compacter.

In addition, the present embodiment also relates to a battery pack case, as shown in fig. 6 and 8, in which only the battery pack lower case 4 is shown, and the battery pack liquid-cooled joint as described above is provided on the battery pack lower case 4, and the specific structure of the battery pack lower case 4 may be an existing conventional structure.

The battery package casing of this embodiment through setting up as above battery package liquid cold joint, need not great size, can make the battery package liquid cold joint and the battery module between the distance satisfy the requirement.

In addition, the embodiment also relates to a battery pack, and the battery pack is provided with the battery pack shell.

The battery pack of the present embodiment can be configured more compactly by providing the battery pack case as described above.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a battery package liquid cold junction, connects on the battery package casing which characterized in that:

battery package liquid cold joint is including connecting body (1), connect liquid inlet channel (1011) and liquid outlet channel (1021) that have to be linked together in body (1), the axis of liquid inlet channel (1011) is parallel with the axis of liquid outlet channel (1021), and the axis biasing of liquid inlet channel (1011) is in one side of the axis of liquid outlet channel (1021).

2. The battery pack liquid-cooled joint of claim 1, wherein:

an overlapping area is formed between the liquid inlet channel (1011) and the liquid outlet channel (1021), and the liquid inlet channel (1011) and the liquid outlet channel (1021) are directly communicated through the overlapping area.

3. The battery pack liquid-cooled joint of claim 2, wherein:

the overlapping length H of the overlapping area in the axial direction of the liquid outlet channel (1021) is not less than 6mm.

4. The battery pack liquid-cooled joint of claim 2, wherein:

the distance L between the axis of the liquid inlet channel (1011) and the axis of the liquid outlet channel (1021) and the inner diameter d1 of the liquid inlet channel (1011) and the inner diameter d2 of the liquid outlet channel (1021) satisfy the following relations:

L＜(d1+d2)/2。

5. the battery pack liquid-cooled joint of claim 1, wherein:

the battery pack is characterized in that an installation part is arranged on the connector body (1), and the installation part is used for detachably connecting the connector body (1) to the battery pack shell.

6. The battery pack liquid-cooled joint of claim 5, wherein:

the installation department is including locating connect the external screw thread on body (1), connect body (1) through with external screw thread complex nut (2) are installed on the battery package casing.

7. The battery pack liquid-cooled joint of claim 6, wherein:

be equipped with on joint body (1) along the radial evagination convex portion (103) of inlet channel (1011), the external screw thread is located on convex portion (103).

8. The battery pack liquid-cooled joint of claim 1, wherein:

the connector body (1) is provided with a mounting groove (104), and the mounting groove (104) is used for mounting a sealing element (3) which is abutted to the battery pack shell.

9. A battery pack housing, comprising: the battery pack liquid-cooled joint of any one of claims 1 to 8 is arranged on the battery pack shell.

10. A battery pack, comprising: the battery pack is provided with the battery pack case of claim 9.