CN220138508U - Battery pack internal connection structure and battery pack - Google Patents
Battery pack internal connection structure and battery pack Download PDFInfo
- Publication number
- CN220138508U CN220138508U CN202321457420.3U CN202321457420U CN220138508U CN 220138508 U CN220138508 U CN 220138508U CN 202321457420 U CN202321457420 U CN 202321457420U CN 220138508 U CN220138508 U CN 220138508U
- Authority
- CN
- China
- Prior art keywords
- battery pack
- connection structure
- internal connection
- guard plate
- bottom guard
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000001816 cooling Methods 0.000 claims description 59
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 38
- 239000000853 adhesive Substances 0.000 claims description 12
- 230000001070 adhesive effect Effects 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 9
- 239000012790 adhesive layer Substances 0.000 claims description 6
- 239000010410 layer Substances 0.000 claims description 2
- 239000000110 cooling liquid Substances 0.000 description 6
- 238000003466 welding Methods 0.000 description 6
- 206010011469 Crying Diseases 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000009863 impact test Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Secondary Cells (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The utility model provides a battery pack internal connection structure and a battery pack. The internal connection structure of the battery pack can improve the connection mode of the bottom guard plate and ensure that the battery pack has good tightness.
Description
Technical Field
The utility model relates to the technical field of battery packs, in particular to an internal connection structure of a battery pack. In addition, the utility model also relates to a battery pack.
Background
Nowadays, with the market acceptance and the holding capacity of electric vehicles rising year by year and keeping fast growing, the battery pack is used as a high-energy-density energy storage component of the electric vehicles, the structural safety of the battery pack is related to the safety of the whole vehicle, and compared with the traditional fuel vehicles, the bottom safety of the electric vehicles is particularly important, and in order to better verify the safety problem of the whole mechanical structure of the battery pack, the fixing mode of the battery pack bottom guard plate is important.
At present, a bottom guard plate is generally fixed on a lower shell of a battery pack through bolts, bolts in the middle of the bottom guard plate need to penetrate through a water cooling plate to be fixed on a middle cross beam of the battery pack, and due to cooling liquid in the water cooling plate, after the bolts penetrate through the water cooling plate, tightness of the inside of the battery pack cannot be guaranteed, and leakage of the cooling liquid in the water cooling plate is likely to happen.
Disclosure of Invention
In view of the above, the present utility model is directed to an internal connection structure of a battery pack, so as to improve the connection mode of the bottom guard plate and ensure good tightness of the interior of the battery pack.
In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:
an internal connection structure of a battery pack is used for connecting a water cooling plate and a bottom guard plate and comprises a connecting seat, a locking part and an adhesive layer arranged between the connecting seat and the water cooling plate;
the locking part penetrates through the bottom guard plate and is connected with the connecting seat, and the bottom guard plate and the connecting seat are fixed together.
Further, the locking part is a bolt pair.
Further, the bolt pair comprises a fixing bolt connected with the connecting seat and a fixing nut, and the fixing bolt passes through the bottom guard plate and is in threaded connection with the fixing nut.
Furthermore, the bonding layer is structural adhesive, and the structural adhesive bonds the connecting seat to the middle part of the water cooling plate.
Further, the bottom guard plate is connected with the frame of the water cooling plate through a plurality of connecting bolts.
Further, a through hole for the locking part to pass through is formed in the bottom guard plate, and a sealing piece for sealing the through hole is arranged between the connecting seat and the bottom guard plate.
Further, the bottom guard plate is provided with a groove, the bottom of the groove faces the surface of the water cooling plate, which protrudes out of the bottom guard plate, the locking end of the locking part is arranged in the groove, and the distance from the locking end to the bottom of the groove is smaller than the depth of the groove.
Compared with the prior art, the utility model has the following advantages:
according to the battery pack internal connection structure, the connecting base is adhered to the water cooling plate, and the bottom guard plate is fixedly connected with the connecting base through the locking part, so that the bottom guard plate is fixed on the water cooling plate, holes are not required to be formed in the water cooling plate, and the risk of leakage of cooling liquid in the water cooling plate is reduced.
And secondly, the bottom guard plate is connected with the frame of the water cooling plate through the connecting bolts, so that the connection strength of the bottom guard plate and the water cooling plate can be improved, and leakage of cooling liquid in the water cooling plate from the connecting positions of the connecting bolts is avoided.
Moreover, the sealing piece is arranged at the perforation position of the bottom guard plate, so that the perforation tightness can be improved, and external water and dust are reduced from entering the battery pack from the perforation position.
In addition, the locking part is arranged in the groove of the bottom guard plate, and the distance from the locking end of the locking part to the bottom of the groove is smaller than the depth of the groove, so that the locking part can be prevented from extending out of the groove, and the installation of other parts can not be influenced.
The utility model also relates to a battery pack, wherein the battery pack is internally provided with the battery pack internal connection structure.
Further, the battery pack is provided with a lower shell, and the water cooling plate of the battery pack internal connection structure is welded with the lower shell.
Further, the battery pack further comprises a plurality of buffer plates, wherein the buffer plates are arranged on the water cooling plates of the battery pack internal connection structure, and the battery pack internal connection structure is provided with gaps between the buffer plates.
The battery pack has the technical advantages of the internal connection structure of the battery pack, can ensure good tightness of the inside of the battery pack and reduces the occurrence of liquid leakage.
Secondly, with water-cooling board and lower casing welding, can improve the joint strength of water-cooling board, improve the joint strength of end backplate then, can also avoid the water-cooling board trompil to be connected with lower casing through the bolt, reduce the risk of weeping.
Furthermore, through setting up a plurality of buffer boards on the water-cooling board, can increase the anti striking performance of battery package bottom, reduce the risk that makes the water-cooling board weeping because of striking.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model, wherein the words of front and back, top and bottom, etc. are used to indicate relative position and are not intended to limit the utility model unduly. In the drawings:
fig. 1 is a schematic structural view of an internal connection structure of a battery pack according to an embodiment of the present utility model;
fig. 2 is a schematic structural diagram of a battery pack internal connection structure according to a second embodiment of the present utility model;
reference numerals illustrate:
1. a water cooling plate; 2. a bottom guard board; 3. a connecting seat; 4. a locking part; 5. an adhesive layer; 6. a fixing nut; 7. a connecting bolt; 8. perforating; 9. a seal; 10. a groove; 11. a fixing bolt; 12. a lower housing; 13. and a buffer plate.
Detailed Description
It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.
In the description of the present utility model, it should be noted that, if terms indicating an azimuth or a positional relationship such as "upper", "lower", "inner", "back", etc., are presented, they are based on the azimuth or the positional relationship shown in the drawings, only for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model; if the terms "first," "second," etc. are used herein, they are used for descriptive purposes only and not to be construed as indicating or implying relative importance.
Furthermore, in the description of the present utility model, the terms "mounted," "connected," and "connected," are to be construed broadly, unless otherwise specifically defined. For example, the connection may be a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in combination with specific cases.
The utility model will be described in detail below with reference to the drawings in connection with embodiments.
Example 1
The embodiment relates to a battery pack internal connection structure, which is used for connecting a water cooling plate 1 and a bottom guard plate 2, and provides a threshold beam structure with both buffer performance and self strength; an exemplary structure thereof is shown in fig. 1.
As a whole, as shown in fig. 1, the internal connection structure of the battery pack includes a connection base 3, a locking portion 4, and an adhesive layer 5 disposed between the connection base 3 and the water cooling plate 1.
Wherein, connecting seat 3 bonds with water-cooling board 1 through adhesive linkage 5, and adhesive linkage 5 can adopt the structural adhesive, paints the structural adhesive on the middle part of connecting seat 3 and water-cooling board 1, again with connecting seat 3 butt joint on the middle part of water-cooling board 1 can, guarantee the joint strength between connecting seat 3 and the water-cooling board 1, pass at locking portion 4 and be connected with connecting seat 3 behind backplate 2 to backplate 2 is together fixed with connecting seat 3, guarantees the joint strength of backplate 2, and avoids trompil connection backplate 2 on water-cooling board 1, thereby avoids the emergence of weeping. When the adhesive layer 5 is coated, an auxiliary line can be drawn on the water-cooled plate 1, and the adhesive layer 5 is coated according to the auxiliary line, so that the adhesive position of the connecting seat 3 on the water-cooled plate 1 is determined, and the connecting seat 3 is convenient to adhere.
The water cooling plate 1 is divided into two plates attached up and down, the upper plate has a flow channel for circulating the cooling liquid, and the connection base 3 is adhered to the lower plate, so that the cooling liquid in the upper plate is not easy to leak during adhesion.
Next, the locking portion 4 is preferably a bolt pair, the bolt pair is divided into fixing bolts 11, and the fixing bolts 11 are preferably fixed by caulking or welding the bolt heads of the fixing bolts 11 with the connection base 3, and the fixing bolts 11 connect the bottom guard plate 2 with the fixing bolts 11 through the fixing nuts 6. Of course, the threaded hole may be formed in the connection base 3, and the threaded end of the fixing bolt 11 may pass through the bottom guard plate 2 and be connected to the threaded hole, so that the bottom guard plate 2 may be connected to the connection base 3 by the fixing bolt 11 in such a connection manner that the connection strength achieved is close to the connection strength of the fixing bolt 11.
In addition, the bottom guard plate 2 is further connected with the frame of the water-cooling plate 1 through a plurality of connecting bolts 7, and the connecting bolts 7 are arranged along the frame of the water-cooling plate 1, so that the connection strength of the bottom guard plate 2 and the water-cooling plate 1 is improved, the tightness of the water-cooling plate 1 is not affected, and the coolant in the water-cooling plate 1 is not easy to leak.
In addition, as shown in fig. 1, the bottom guard plate 2 is provided with a groove 10, the bottom of the groove 10 protrudes towards the surface of the water cooling plate 1, the locking end of the locking part 4 is arranged in the groove 10, and the distance from the locking end to the bottom of the groove 10 is smaller than the depth of the groove 10.
In the embodiment, the bottom guard plate 2 is provided with a through hole 8 for the locking part 4 to pass through, a sealing element 9 is arranged at the through hole 8, the sealing element 9 is adhered between the water cooling plate 1 and the bottom guard plate 2, and the sealing element 9 is sleeved on the locking part 4
The connection process of the battery internal connection structure of the present embodiment is as follows:
firstly, an auxiliary line is drawn on a water cooling plate 1, structural adhesive is smeared on a connecting seat 3 and the water cooling plate 1 according to the position of the auxiliary line, then the connecting seat 3 is butted on the water cooling plate 1, after the structural adhesive is solidified, a fixing bolt 11 on the connecting seat 3 passes through a through hole 8 on a bottom guard plate 2, the bottom guard plate 2 is screwed on the connecting seat 3 through a fixing nut 6, so that the bottom guard plate 2 is fixed, the bottom guard plate 2 is fixed with the frame of the water cooling plate 1 through a plurality of connecting bolts 7, and the connection strength of the bottom guard plate 2 and the water cooling plate 1 is improved.
When the fixing bolt 11 passes through the through hole 8, the fixing bolt 11 passes through the seal member 9, and the seal member 9 is interposed between the connection base 3 and the bottom cover 2, so that the seal member 9 is bonded between the connection base 3 and the bottom cover 2, thereby sealing the through hole 8.
Example two
As shown in fig. 2, the present embodiment relates to a battery pack in which the battery pack internal connection structure of the first embodiment is provided. The battery pack of the present embodiment has the technical advantage of the battery pack internal connection structure of the first embodiment.
And, the battery package has lower casing 12, and battery package internal connection structure's water-cooling board 1 and lower casing 12 welding set up, and wherein, the welding mode is the friction stir welding technology of preferred to with water-cooling board 1 welding on lower casing 12's frame and crossbeam, in order to improve water-cooling board 1's joint strength, can improve the joint strength between backplate 2 and the water-cooling board 1 in turn.
In addition, the battery pack further comprises a plurality of buffer plates 13, the buffer plates 13 are arranged on the water cooling plate 1 of the battery pack internal connection structure, and the battery pack internal connection structure is positioned in a gap between the buffer plates 13. The buffer plate 13 is preferably made of MPP, and the MPP is modified polypropylene, so that the impact resistance of the bottom of the battery pack can be increased, the battery pack can pass through the bottom ball impact test of the battery pack smoothly, and the internal connection structure of the battery pack cannot be affected to be adhered to the water-cooling plate 1. The buffer plate 13 can be adhered to the water-cooling plate 1 by structural adhesive.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.
Claims (10)
1. The utility model provides a battery package internal connection structure for connect water-cooling board and end backplate, its characterized in that:
the water cooling device comprises a connecting seat, a locking part and an adhesive layer arranged between the connecting seat and the water cooling plate;
the locking part penetrates through the bottom guard plate and is connected with the connecting seat, and the bottom guard plate and the connecting seat are fixed together.
2. The battery pack internal connection structure according to claim 1, wherein:
the locking part is a bolt pair.
3. The battery pack internal connection structure according to claim 2, wherein:
the bolt pair comprises a fixing bolt connected with the connecting seat and a fixing nut, and the fixing bolt passes through the bottom guard plate and is in threaded connection with the fixing nut.
4. The battery pack internal connection structure according to claim 1, wherein:
the bottom guard plate is provided with a groove, the bottom of the groove faces the surface of the water cooling plate, which protrudes out of the bottom guard plate, the locking end of the locking part is arranged in the groove, and the distance from the locking end to the bottom of the groove is smaller than the depth of the groove.
5. The battery pack internal connection structure according to claim 1, wherein:
the bonding layer is structural adhesive, and the structural adhesive bonds the connecting seat to the middle part of the water cooling plate.
6. The battery pack internal connection structure according to any one of claims 1 to 5, wherein:
the bottom guard plate is connected with the frame of the water cooling plate through a plurality of connecting bolts.
7. The battery pack internal connection structure according to claim 6, wherein:
and a through hole for the locking part to pass through is formed in the bottom guard plate, and a sealing piece for sealing the through hole is arranged between the connecting seat and the bottom guard plate.
8. A battery pack, characterized in that:
the battery pack is internally provided with the battery pack internal connection structure according to any one of claims 1 to 6.
9. The battery pack of claim 8, wherein:
the battery pack is provided with a lower shell, and the water cooling plate of the battery pack internal connection structure is welded on the lower shell.
10. The battery pack of claim 8, wherein:
the battery pack further comprises a plurality of buffer plates, wherein the buffer plates are arranged on the water cooling plates of the battery pack internal connection structure, and the battery pack internal connection structure is located in gaps between the buffer plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321457420.3U CN220138508U (en) | 2023-06-08 | 2023-06-08 | Battery pack internal connection structure and battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321457420.3U CN220138508U (en) | 2023-06-08 | 2023-06-08 | Battery pack internal connection structure and battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220138508U true CN220138508U (en) | 2023-12-05 |
Family
ID=88948538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321457420.3U Active CN220138508U (en) | 2023-06-08 | 2023-06-08 | Battery pack internal connection structure and battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220138508U (en) |
-
2023
- 2023-06-08 CN CN202321457420.3U patent/CN220138508U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |