CN219739182U - Power battery fastening device - Google Patents
Power battery fastening device Download PDFInfo
- Publication number
- CN219739182U CN219739182U CN202320515982.2U CN202320515982U CN219739182U CN 219739182 U CN219739182 U CN 219739182U CN 202320515982 U CN202320515982 U CN 202320515982U CN 219739182 U CN219739182 U CN 219739182U
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- China
- Prior art keywords
- battery pack
- fastener
- bolt
- vehicle body
- limiting
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- 238000009434 installation Methods 0.000 claims description 11
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- KUBDPQJOLOUJRM-UHFFFAOYSA-N 2-(chloromethyl)oxirane;4-[2-(4-hydroxyphenyl)propan-2-yl]phenol Chemical compound ClCC1CO1.C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 KUBDPQJOLOUJRM-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 125000003003 spiro group Chemical group 0.000 description 1
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- Battery Mounting, Suspending (AREA)
Abstract
The utility model relates to the technical field of batteries and discloses a power battery fastening device which comprises a nut, a fastening piece and a vehicle body connecting bolt, wherein the fastening piece is used for being inserted into mounting holes correspondingly arranged on a battery pack and a vehicle body from one side of a lower shell of the battery pack, the power battery fastening device comprises a limiting part and a connecting part, the limiting part is used for limiting the relative rotation of the fastening piece and the battery pack and the movement of the fastening piece towards one side of the connecting part, and the nut is sleeved on the connecting part from one side of an upper shell of the battery pack and is in threaded connection with the connecting part. The fastener is also provided with a mounting channel which is communicated along the length direction of the fastener, and the vehicle body connecting bolt is inserted into the mounting channel and is in threaded connection with the fastener, so that the connection strength of the battery pack and the vehicle body can be further ensured. The stress area of the vehicle body connecting bolt in threaded connection can be increased by additionally arranging the fastener, so that the connection between the battery pack and the vehicle body can be made by adopting high-torque threads without worrying about deformation of a shell of the battery pack.
Description
Technical Field
The utility model relates to the technical field of batteries, in particular to a power battery fastening device.
Background
The battery pack and the vehicle body are mounted and dismounted through the fasteners, the battery pack is provided with holes or the side beams of the battery pack are provided with steel sleeves, bolts are pre-buried or welded on the vehicle body, the holes or the steel sleeves on the battery pack are used as mounting holes, and the bolts penetrate through the mounting holes and are then fastened and connected with nuts on the vehicle body. In order to ensure the connection strength, the strength requirement of the hole site on the battery pack shell is high, the weight or the production cost of the battery pack can be increased, and the installation procedure can be increased by arranging the steel sleeve, so that the production efficiency is not improved.
Accordingly, there is a need for a power battery fastening device that solves the above-mentioned problems.
Disclosure of Invention
The utility model aims to provide a power battery fastening device which is used for reducing the requirement on the structural strength of a battery pack and improving the production efficiency.
The technical scheme adopted by the utility model is as follows:
a power cell fastening device comprising:
a nut;
the fastener is provided with a mounting channel penetrating along the length direction of the fastener, the fastener is inserted into mounting holes correspondingly arranged on the battery pack and the vehicle body from one side of the lower shell of the battery pack, the fastener comprises a limiting part and a connecting part, the limiting part is used for limiting the relative rotation of the fastener and the battery pack, the fastener moves towards one side of the connecting part, and the nut is sleeved on the connecting part from one side of the upper shell of the battery pack and is in threaded connection with the connecting part;
the automobile body connecting bolt is positioned in the installation channel and is in threaded connection with the fastener.
Optionally, the vehicle body connecting bolt comprises a bolt main body, the bolt main body is in screwed connection with the installation channel, and the vehicle body is clamped between the nut and the upper shell of the battery pack.
Optionally, the automobile body connecting bolt includes bolt main part and bolt head, the bolt main part spiro union in the installation passageway, the bolt head is located lower casing one side of battery package and support and press spacing portion, the automobile body presss from both sides and locates the bolt head with between the lower casing of battery package.
Optionally, the bolt body and the bolt head are integrally provided, and the bolt body is inserted into the mounting channel from a lower case side of the battery pack.
Optionally, the bolt body and the bolt head are detachably connected, the bolt body is inserted into the mounting channel from one side of the upper shell of the battery pack, and the bolt head is in threaded connection with the bolt body from one side of the lower shell of the battery pack.
Optionally, the spacing portion includes spacing protruding section, spacing protruding section is non-cylindrical structure, the mounting hole on the battery package is the shoulder hole, spacing protruding section is located the big hole section of shoulder hole, and can the butt the step face of shoulder hole with the lateral wall of big hole section.
Optionally, the fastener further includes a spacing connection section, the spacing connection section is a non-cylindrical structure, the spacing connection section is located the aperture section of the stepped hole, and can butt the lateral wall of aperture section.
Optionally, the fastener is clearance fit with the mounting hole.
Optionally, along the length direction of the fastener, one end of the connecting portion, which is far away from the limiting portion, extends out of the nut.
Optionally, along the length direction of the fastener, one end of the bolt main body, which is far away from the limiting part, extends out of the mounting channel.
The beneficial effects of the utility model are as follows:
the power battery fastening device comprises a nut, a fastening piece and a vehicle body connecting bolt, wherein the fastening piece is used for being inserted into mounting holes correspondingly formed in a battery pack and a vehicle body from one side of a lower shell of the battery pack, the power battery fastening device comprises a limiting part and a connecting part, the limiting part is used for limiting relative rotation of the fastening piece and the battery pack and movement of the fastening piece towards one side of the connecting part, and the nut is sleeved on the connecting part from one side of an upper shell of the battery pack and is in threaded connection with the connecting part. The fastener is also provided with a mounting channel which is communicated along the length direction of the fastener, and after the nut is in threaded connection with the fastener, in order to further ensure the connection strength of the battery pack and the vehicle body, the vehicle body connecting bolt is inserted into the mounting channel and is in threaded connection with the fastener. The stress area of the vehicle body connecting bolt in threaded connection can be increased by additionally arranging the fastener, so that the connection of the battery pack and the vehicle body can be realized by adopting large torque threads without worrying about deformation of a shell of the battery pack, and the requirement on structural strength of the battery pack can be avoided while the fixing efficiency of the battery pack and the vehicle body is improved.
Drawings
FIG. 1 is an assembly view of a fastener, a body attachment bolt and a nut provided in an embodiment of the present utility model;
fig. 2 is a partial assembly view of a power battery fastening device and a battery pack according to an embodiment of the present utility model.
In the figure:
1. a nut;
2. a fastener; 21. a limit part; 211. a limit protruding section; 212. a limit connecting section; 22. a connection part;
3. a vehicle body connecting bolt; 31. a bolt body; 32. a bolt head;
1001. an upper housing; 1002. and a lower housing.
Detailed Description
In order to make the technical problems solved, the technical scheme adopted and the technical effects achieved by the utility model more clear, the technical scheme of the utility model is further described below by a specific embodiment in combination with the attached drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the drawings related to the present utility model are shown.
In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are orientation or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.
The technical scheme of the utility model is further described below by the specific embodiments with reference to the accompanying drawings.
As shown in fig. 1 to 2, the present embodiment provides a power battery fastening device, which can improve the fixing efficiency of the battery pack and the vehicle body, and avoid increasing the requirement for the structural strength of the battery pack. Specifically, the power battery fastening device comprises a nut 1, a fastening member 2 and a vehicle body connecting bolt 3, wherein the fastening member 2 can be inserted into mounting holes correspondingly arranged on the battery pack and the vehicle body from one side of a lower shell 1002 of the battery pack during assembly, and the nut 1 is sleeved on the connecting part 22 from one side of an upper shell 1001 of the battery pack and is in threaded connection with the fastening member 2. The fastener 2 comprises a limiting part 21 and a connecting part 22, wherein the limiting part 21 can prevent the fastener 2 from rotating with the nut 1 in the screwing process, and the fastener 2 moves towards one side of the connecting part 22, and the connecting part 22 is in threaded connection with the nut 1. The fastener 2 is further provided with a mounting channel penetrating along the length direction of the fastener, after the nut 1 is in threaded connection with the fastener 2, in order to further ensure the connection strength of the battery pack and the vehicle body, the vehicle body connecting bolt 3 is inserted into the mounting channel and is in threaded connection with the fastener 2, namely, the vehicle body connecting bolt 3 is provided with external threads, and the mounting channel is internally provided with internal threads at corresponding positions. The stress area of the vehicle body connecting bolt 3 during threaded connection can be increased by adding the fastener 2, so that the connection of the battery pack and the vehicle body can be made by adopting high-torque threads without worrying about deformation of a shell of the battery pack. In the concrete implementation, the vehicle body connecting bolt 3 with the torque larger than 80Nm can be adopted to meet the connection requirement of the battery pack with larger volume and weight and the vehicle body. On this basis, there are two types of relative positions of the vehicle body and the battery pack, one is that the vehicle body is sandwiched between the nut 1 and the upper case 1001 of the battery pack, and the other is that the vehicle body is sandwiched between the vehicle body connecting bolt 3 and the lower case 1002 of the battery pack, and these two types of assembly are related to the specific structure of the vehicle body connecting bolt 3, which will be described in detail later.
In specific implementation, the limiting portion 21 and the battery pack are limited relatively in position by a plurality of methods, referring to fig. 1, the limiting portion 21 provided in this embodiment includes a limiting protruding section 211, the limiting protruding section 211 is of a non-cylindrical structure, and a mounting hole on the battery pack matched with the limiting protruding section 211 is a stepped hole, and the limiting protruding section 211 protrudes from other positions of the limiting portion 21 in the circumferential direction of the limiting portion 21, so that the limiting protruding section 211 is located at a large hole section of the stepped hole. The limiting protruding section 211 may abut against a side wall of the large hole section to limit the relative rotation between the fastener 2 and the battery pack, and the limiting protruding section 211 may abut against a step surface of the step hole to limit the movement of the fastener 2 toward the connecting portion 22.
Further, the limiting portion 21 includes a limiting connection section 212, the limiting connection section 212 is of a non-cylindrical structure, the limiting connection section 212 is located on a small hole section of the stepped hole, and can be abutted against the side wall of the small hole section to limit relative rotation between the fastening piece 2 and the battery pack, so that limitation of the fastening piece 2 and the battery pack in the circumferential direction of the fastening piece 2 is enhanced, and connection strength between the battery pack and the vehicle body is guaranteed.
Preferably, the fastener 2 is in clearance fit with the mounting hole to facilitate removal of the fastener 2 from the mounting hole, and it is understood that the clearance fit of the fastener 2 with the mounting hole is only a mounting gap that does not interfere with abutment of the fastener 2 with the side wall of the mounting hole when attempted to be rotated. Preferably, during assembly, a screw paste is threaded between the fastener 2 and the lower housing 1002 of the battery pack to increase the coupling strength of the lower housing 1002 and the fastener 2.
Still further, the body connecting bolt 3 includes a bolt body 31, the bolt body 31 is screwed in the installation channel, and on the basis of the relative fixation of the fastener 2 and the nut 1 with respect to the upper case 1001, the lower case 1002 of the battery pack and the body, the body connecting bolt 3 can further strengthen the connection strength between the fastener 2 and the nut 1, and at this time, the body can only be sandwiched between the upper case 1001 and the nut 1 of the battery pack. In particular, the vehicle body connecting bolt 3 may be inserted into the installation channel from one side of the upper case 1001 of the battery pack, unlike the conventional installation method in which the vehicle body connecting bolt 3 can be installed from only one side of the lower case 1002 of the battery pack, i.e., from the bottom up, with ease of installation.
Alternatively, the vehicle body connecting bolt 3 includes a bolt body 31 and a bolt head 32, the bolt body 31 is screwed in the installation channel, the bolt head 32 is located at one side of the lower housing 1002 of the battery pack and abuts against the limiting portion 21, and the vehicle body is sandwiched between the bolt head 32 and the lower housing 1002 of the battery pack. Preferably, the limiting part 21 is completely positioned in the mounting hole of the battery pack, and after the vehicle body connecting bolt 3 is screwed in place in the mounting channel, the vehicle body is directly pressed against the battery pack.
In particular, the bolt body 31 and the bolt head 32 of the vehicle body connecting bolt 3 may be integrally provided, and the processing is simple, but the structure of the bolt head 32 is limited in the assembly, and the vehicle body connecting bolt 3 may be inserted into the mounting passage only from one side of the lower case 1002 of the battery pack, that is, only from one side of the lower case 1002 of the battery pack, and the vehicle body connecting bolt 3 may be mounted in a downward-upward manner.
In other embodiments, the bolt body 31 and the bolt head 32 of the vehicle body connecting bolt 3 may be configured as a detachable structure, and then the bolt body 31 may be inserted into the mounting channel from the upper case 1001 side of the battery pack at the time of assembly, and then the bolt head 32 may be screwed with the bolt body 31 from the lower case 1002 side of the battery pack. This method can be used to mount the bolt body 31 from one side of the upper case 1001 of the battery pack, or can be used to sandwich the vehicle body between the bolt head 32 and the lower case 1002 of the battery pack.
Optionally, along the length direction of the fastener 2, after the nut 1 is installed in place on the fastener 2, one end of the connecting portion 22, which is far away from the limiting portion 21, extends out of the nut 1, so as to ensure that the nut 1 and the fastener 2 have sufficient connection length when the vehicle body is clamped at any position, and ensure that the connection of the nut 1 and the fastener 2 is stable.
Optionally, along the length direction of the fastener 2, after the vehicle body connecting bolt 3 is installed in place in the fastener 2, the bolt main body 31 is far away from the protruding installation channel of one end of the limiting portion 21, so as to ensure that the vehicle body clamp is arranged at any position, and the vehicle body connecting bolt 3 and the fastener 2 have sufficient connection length, so that the connection stability of the vehicle body connecting bolt and the fastener 2 is ensured.
The above embodiments merely illustrate the basic principle and features of the present utility model, and the present utility model is not limited to the above embodiments, but may be varied and altered without departing from the spirit and scope of the present utility model. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (10)
1. A power cell fastening device, comprising:
a nut (1);
the fastener (2) is provided with a mounting channel penetrating along the length direction of the fastener (2), the fastener (2) is inserted into mounting holes correspondingly formed in the battery pack and the vehicle body from one side of a lower shell (1002) of the battery pack, the fastener (2) comprises a limiting part (21) and a connecting part (22), the limiting part (21) is used for limiting the relative rotation of the fastener (2) and the battery pack, the fastener (2) moves towards one side of the connecting part (22), and the nut (1) is sleeved on the connecting part (22) from one side of an upper shell (1001) of the battery pack and is in threaded connection with the connecting part (22);
and the automobile body connecting bolt (3) is positioned in the installation channel and is in threaded connection with the fastener (2).
2. The power battery fastening device according to claim 1, characterized in that the vehicle body connecting bolt (3) includes a bolt body (31), the bolt body (31) is screwed into the mounting passage, and the vehicle body is sandwiched between the nut (1) and an upper case (1001) of the battery pack.
3. The power battery fastening device according to claim 1, wherein the vehicle body connecting bolt (3) comprises a bolt main body (31) and a bolt head (32), the bolt main body (31) is screwed into the mounting channel, the bolt head (32) is located on one side of a lower shell (1002) of the battery pack and abuts against the limiting portion (21), and the vehicle body is clamped between the bolt head (32) and the lower shell (1002) of the battery pack.
4. A power battery fastening device according to claim 3, characterized in that the bolt body (31) and the bolt head (32) are integrally provided, the bolt body (31) being inserted into the mounting passage from the lower housing (1002) side of the battery pack.
5. A power battery fastening device according to claim 3, characterized in that the bolt body (31) and the bolt head (32) are detachably connected, the bolt body (31) is inserted into the mounting passage from the upper case (1001) side of the battery pack, and the bolt head (32) is screwed with the bolt body (31) from the lower case (1002) side of the battery pack.
6. The power battery fastening device according to claim 1, wherein the limiting part (21) comprises a limiting protruding section (211), the limiting protruding section (211) is of a non-cylindrical structure, the mounting hole on the battery pack is a stepped hole, and the limiting protruding section (211) is located on a large hole section of the stepped hole and can be abutted against a stepped surface of the stepped hole and a side wall of the large hole section.
7. The power cell fastening device according to claim 6, wherein the fastening device (2) further comprises a limiting connection section (212), the limiting connection section (212) is of a non-cylindrical structure, and the limiting connection section (212) is located at the small hole section of the stepped hole and can abut against the side wall of the small hole section.
8. The power cell fastening device according to claim 7, characterized in that the fastener (2) is in a clearance fit with the mounting hole.
9. The power battery fastening device according to claim 1, characterized in that an end of the connecting portion (22) remote from the limiting portion (21) extends out of the nut (1) in the length direction of the fastener (2).
10. The power battery fastening device according to claim 2, characterized in that an end of the bolt body (31) remote from the limit portion (21) protrudes out of the mounting channel in the length direction of the fastener (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320515982.2U CN219739182U (en) | 2023-03-16 | 2023-03-16 | Power battery fastening device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320515982.2U CN219739182U (en) | 2023-03-16 | 2023-03-16 | Power battery fastening device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219739182U true CN219739182U (en) | 2023-09-22 |
Family
ID=88053275
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320515982.2U Active CN219739182U (en) | 2023-03-16 | 2023-03-16 | Power battery fastening device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219739182U (en) |
-
2023
- 2023-03-16 CN CN202320515982.2U patent/CN219739182U/en active Active
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