CN220420649U - Battery pack - Google Patents
Battery pack Download PDFInfo
- Publication number
- CN220420649U CN220420649U CN202321737738.7U CN202321737738U CN220420649U CN 220420649 U CN220420649 U CN 220420649U CN 202321737738 U CN202321737738 U CN 202321737738U CN 220420649 U CN220420649 U CN 220420649U
- Authority
- CN
- China
- Prior art keywords
- battery
- box cover
- strip
- battery box
- battery module
- 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
- 238000002347 injection Methods 0.000 claims abstract description 6
- 239000007924 injection Substances 0.000 claims abstract description 6
- 239000006260 foam Substances 0.000 claims description 31
- 239000010445 mica Substances 0.000 claims description 27
- 229910052618 mica group Inorganic materials 0.000 claims description 27
- 238000005452 bending Methods 0.000 claims description 24
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 19
- 239000010931 gold Substances 0.000 claims description 19
- 229910052737 gold Inorganic materials 0.000 claims description 19
- 238000007789 sealing Methods 0.000 claims description 16
- 239000002390 adhesive tape Substances 0.000 claims description 12
- 230000003014 reinforcing effect Effects 0.000 claims description 5
- 229910001335 Galvanized steel Inorganic materials 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 239000008397 galvanized steel Substances 0.000 claims description 3
- 230000009970 fire resistant effect Effects 0.000 claims 2
- 230000006978 adaptation Effects 0.000 abstract 1
- 230000009286 beneficial effect Effects 0.000 description 6
- 238000004880 explosion Methods 0.000 description 5
- 230000002159 abnormal effect Effects 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 229920000742 Cotton Polymers 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000006467 substitution reaction 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
- Battery Mounting, Suspending (AREA)
Abstract
The utility model provides a battery pack, which comprises a battery box cover, a battery module and a fireproof layer, wherein the battery box cover is provided with a plurality of battery holes; the fire-proof layer sets up between battery case lid and battery module, and the quantity and the battery module looks adaptation of fire-proof layer, and battery module's top homoenergetic is covered by the fire-proof layer, and the position of arranging of fire-proof layer all avoids the injection position of battery module explosion-proof valve, is provided with the exhaust passage in the fire-proof layer. According to the utility model, through the arrangement of the fireproof layer and the exhaust channel, when the battery is in thermal runaway, the fireproof layer can resist a certain impact force and fire to burn through the case cover, so that flame is prevented from spreading outside the battery pack and an automobile passenger cabin, and the safety of an automobile is improved; in addition, the self weight of the battery box cover can be increased by filling the fireproof layer, so that the rigidity strength of the battery box cover is improved.
Description
Technical Field
The utility model relates to the technical field of electric automobiles, in particular to a battery pack.
Background
The existing battery box body of the electric automobile is generally used for storing the discharge core, most of the explosion-proof valves of the battery core are arranged towards the battery box cover, when a certain battery explodes and fires, if the battery box cover is not provided with a fireproof design and an exhaust channel, the fire can burn through the box cover, the pressure can not be released, and flame is further caused to spread outside the battery pack and the passenger cabin of the automobile or the explosion damages the safety of passengers.
The traditional battery case cover is made of composite materials or sheet steel; the thickness of the composite material is generally thicker than that of the sheet steel, the Z-direction height of the battery pack is occupied, and the fireproof effect is poor; the thin plate steel such as the reinforcing rib is unreasonable in design, and has weak rigidity and strength due to small dead weight.
Disclosure of Invention
The technical problem to be solved by the utility model is how to prevent flame from spreading outside the battery pack due to thermal runaway of the battery pack.
The utility model solves the technical problems by the following technical means:
a battery pack comprises a battery box cover (1), a battery module (2) and a fireproof layer (3); the battery module is characterized in that the fireproof layer (3) is arranged between the battery box cover (1) and the battery module (2), the number of the fireproof layer (3) is matched with that of the battery module (2), the upper parts of the battery module (2) can be covered by the fireproof layer (3), the arrangement positions of the fireproof layer (3) are kept away from the injection positions of the explosion-proof valves (21) of the battery module (2), and an exhaust channel (6) is arranged in the fireproof layer (3).
The beneficial effects are that: through the arrangement of the fireproof layer and the exhaust channel, when the battery is out of control, the fireproof layer can resist a certain impact force and fire to burn through the case cover, so that flame is prevented from spreading outside the battery pack and an automobile passenger cabin, and the safety of the automobile is improved; in addition, the self weight of the battery box cover can be increased by filling the fireproof layer, so that the rigidity strength of the battery box cover is improved.
Further, the fireproof layer (3) comprises a gold mica plate (31) and strip-shaped foam (33), the gold mica plate (31) is fixed with the inner surface of the battery box cover (1), the strip-shaped foam (33) is fixed with the gold mica plate (31), and the strip-shaped foam (33) is attached to the battery module (2) through interference fit and the reverse acting force of the battery box cover (1).
The beneficial effects are that: through the setting of strip bubble cotton, be in interference fit, make the case lid not have to rock at vibration operating mode in-process and lead to abnormal sound.
Further, the fireproof layer (3) further comprises strip double faced adhesive tapes (32), the strip double faced adhesive tapes (32) are provided with a plurality of, the gold-mica plate (31) is attached to the inner surface of the battery box cover (1) through the strip double faced adhesive tapes (32), and the strip foam (33) is attached to the gold-mica plate (31) through the strip double faced adhesive tapes (32).
Further, the fireproof layer (3) comprises a gold mica plate (31) and three strip-shaped foam pieces (33), the area of the gold mica plate (31) is larger than that of the battery module (2) covered by the gold mica plate, the three strip-shaped foam pieces (33) are distributed above the battery module (2), the arrangement positions of the three strip-shaped foam pieces need to avoid the spraying positions of the explosion-proof valves (21) of the battery module (2), and gaps among the strip-shaped foam pieces (33) are exhaust channels (6).
The beneficial effects are that: through the arrangement of the exhaust channel, the battery generates a large amount of high-temperature gas when in thermal runaway, and can be smoothly discharged outside the battery box, so that the battery pack is prevented from explosion.
Further, the thickness of the fireproof layer (3) is determined by the clearance between the upper surface of the battery module (2) and the inner surface of the battery box cover (1), the thickness of the fireproof layer (3) is larger than the clearance between the upper surface of the battery module (2) and the inner surface of the battery box cover (1), and the strip-shaped foam (33) has 30% -50% of compression.
Furthermore, the high temperature resistance of the gold mica plate (31) reaches 1000 ℃.
Further, the battery box cover also comprises a battery box body (4) and a sealing ring (5), and the battery box cover (1) is connected with the battery box body (4) at the periphery through the sealing ring (5).
The beneficial effects are that: through the setting of sealing washer, can increase the structural strength of battery case lid edge.
Further, a first bending edge (11) is integrally fixed on the periphery of the battery box cover (1), a second bending edge (41) is integrally fixed on the periphery of the battery box body (4), and the bending angles of the first bending edge (11) and the second bending edge (41) are consistent.
The beneficial effects are that: through the arrangement of the bending edge, the sealing ring can be prevented from being damaged by extrusion or sharp objects of the external force on the side surface of the sealing ring, and the air tightness of the battery pack is prevented from being influenced.
Further, the first bending edge (11) and the second bending edge (41) are bent downwards by 90 degrees.
Further, reinforcing ribs (12) are fixed at a plurality of positions on the battery box cover (1), and the battery box cover (1) is made of galvanized steel plates.
The beneficial effects are that: through the setting of strengthening rib and battery case lid material, can increase the case lid pleasing to the eye, further improve the overall structure intensity of case lid.
The utility model has the advantages that:
according to the utility model, through the arrangement of the fireproof layer and the exhaust channel, when the battery is in thermal runaway, the fireproof layer can resist a certain impact force and fire to burn through the case cover, so that flame is prevented from spreading outside the battery pack and an automobile passenger cabin, and the safety of an automobile is improved; in addition, the self weight of the battery box cover can be increased by filling the fireproof layer, so that the rigidity strength of the battery box cover is improved.
According to the utility model, through the arrangement of the strip foam, the strip foam is in interference fit, so that the case cover does not shake to cause abnormal sound in the vibration working condition process.
According to the utility model, through the arrangement of the exhaust channel, a large amount of high-temperature gas is generated when the battery is in thermal runaway, so that the gas can be smoothly discharged out of the battery box, and explosion of the battery pack is avoided.
According to the utility model, through the arrangement of the sealing ring, the structural strength of the edge of the battery box cover can be increased.
According to the utility model, through the arrangement of the bending edge, the sealing ring can be prevented from being damaged by extrusion of external force or sharp objects on the side surface of the sealing ring, and the air tightness of the battery pack is prevented from being influenced.
The utility model can increase the appearance of the case cover and further improve the integral structural strength of the case cover by arranging the reinforcing ribs and the battery case cover material.
Drawings
Fig. 1 is a front sectional view of a battery pack according to an embodiment of the present utility model;
FIG. 2 is an enlarged view of A in FIG. 1;
FIG. 3 is a side cross-sectional view of a battery pack (except for a battery case) according to an embodiment of the present utility model;
FIG. 4 is a partial exploded view of a battery pack according to an embodiment of the present utility model;
fig. 5 is a schematic view showing a part of a battery pack according to an embodiment of the utility model.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions in the embodiments of the present utility model will be clearly and completely described in the following in conjunction with the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Example 1
As shown in fig. 1 and 2, the present embodiment provides a battery pack, which includes a battery case cover 1, a battery module 2, a fireproof layer 3, a battery case 4, and a sealing ring 5.
As shown in fig. 1 and 2, the fireproof layer 3 is fixed in the battery box cover 1, the battery module 2 is fixed in the battery box body 4, the battery box cover 1 is positioned above the battery box body 4, the fireproof layer 3 is positioned above the battery module 2, and the battery box cover 1 and the battery box body 4 are fixed in a sealing way through a sealing ring 5; the battery case lid 1 is connected with the battery case body 4 through the sealing washer 5 in the periphery, and the centre does not have connection or filler, and the battery case lid 1 produces abnormal sound easily and rocks, and the middle fire-proof layer 3 that fills increases the dead weight of battery case lid 1, can improve the rigidity intensity of battery case lid 1 self.
As shown in fig. 1 and 2, a first bending edge 11 is integrally fixed on the periphery of the battery case cover 1, a second bending edge 41 is integrally fixed on the periphery of the battery case body 4, the bending angles of the first bending edge 11 and the second bending edge 41 are consistent, and in this embodiment, the first bending edge 11 and the second bending edge 41 are bent downwards by 90 degrees, so that the structural strength at the edge of the battery case cover 1 can be increased; the arrangement of the bending edge prevents the sealing ring 5 from being extruded by external force or sharp objects on the side surface to damage the sealing ring 5, thereby affecting the air tightness of the battery pack; the battery case cover 1 is fixedly provided with the reinforcing ribs 12 at a plurality of positions, so that the overall structural strength of the case cover is further improved while the appearance of the case cover is improved; the battery case cover 1 is made of a galvanized steel sheet of 1 mm.
As shown in fig. 1, 3, 4 and 5, the fireproof layer 3 comprises a gold mica plate 31, a strip double faced adhesive tape 32 and strip foam 33, the gold mica plate 31 is attached to the inner surface of the battery case cover 1 through the strip double faced adhesive tape 32, the strip foam 33 is attached to the gold mica plate 31 through the strip double faced adhesive tape 32, the strip foam 33 is attached to the battery case cover 1 through interference fit and reverse acting force of the battery case cover 1, the strip foam 33 is in a compressed state, and the strip foam 33 is in interference fit, so that the case cover does not shake in the vibration working condition process to cause abnormal sound; the battery modules 2 are provided with two groups, which are respectively arranged in the battery box body 4 left and right, and the number of the fireproof layers 3 is matched with the number of the battery modules 2, so that the upper parts of the battery modules 2 can be covered by the fireproof layers 3; specifically, each fireproof layer 3 is provided with a gold-mica plate 31 and three strip-shaped foam pieces 33, the area of one gold-mica plate 31 is larger than the area of the battery module 2 covered by the gold-mica plate, the three strip-shaped foam pieces 33 are distributed above the battery module 2, the arrangement positions of the three strip-shaped foam pieces need to avoid the injection positions of the explosion-proof valves 21 of the battery module 2, gaps among the strip-shaped foam pieces 33 are exhaust channels 6, and a large amount of high-temperature gas is generated when the battery is in thermal runaway, so that the gas can be smoothly discharged out of the battery box, and explosion of the battery pack is avoided; the thickness of the fireproof layer 3 is 7mm, wherein the thickness of the gold mica plate 31 is 1mm, the thickness of the fireproof layer 3 is determined by the clearance between the upper surface of the battery module 2 and the inner surface of the battery box cover 1, the thickness of the fireproof layer is larger than the clearance between the upper surface of the battery module 2 and the inner surface of the battery box cover 1, and the strip foam 33 has a certain compression amount which is 30% -50%; the quantity and the shape of the strip double faced adhesive tape 32 and the strip foam 33 can be adjusted according to actual needs; the high temperature resistance of the gold mica plate 31 reaches 1000 ℃; the fireproof layer 3 can resist certain impact force and fire to burn through the case cover when the battery is in thermal runaway, so that flame is prevented from spreading outside the battery pack and the automobile passenger cabin, and the safety of the automobile is improved.
During the use, fix battery module 2 in battery box 4, it is fixed with battery case lid 1 and battery box 4 through sealing washer 5, fix the flame retardant coating 3 between battery case lid 1 and battery module 2, three strip bubble cotton 33 dispersedly arranges in battery module 2 top, its position of arranging needs to avoid the injection position of battery module 2 explosion-proof valve 21, the clearance between each strip bubble cotton 33 is exhaust passage 6, the battery produces a large amount of high temperature gas when thermal runaway, can be unobstructed get rid of outside the battery box, avoid the battery package to produce the explosion, the setting of golden mica board 31 can withstand certain impact force and fire when the thermal runaway takes place for the battery and burn through the case lid.
The above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.
Claims (10)
1. The battery pack is characterized by comprising a battery box cover (1), a battery module (2) and a fireproof layer (3);
the battery module is characterized in that the fireproof layer (3) is arranged between the battery box cover (1) and the battery module (2), the number of the fireproof layer (3) is matched with that of the battery module (2), the upper parts of the battery module (2) can be covered by the fireproof layer (3), the arrangement positions of the fireproof layer (3) are kept away from the injection positions of the explosion-proof valves (21) of the battery module (2), and an exhaust channel (6) is arranged in the fireproof layer (3).
2. A battery pack according to claim 1, wherein: the fire-resistant layer (3) comprises a gold mica plate (31) and strip-shaped foam (33), wherein the gold mica plate (31) is fixed with the inner surface of the battery box cover (1), the strip-shaped foam (33) is fixed with the gold mica plate (31), and the strip-shaped foam (33) is attached to the battery module (2) through interference fit and the reverse acting force of the battery box cover (1).
3. A battery pack according to claim 2, wherein: the fire-proof layer (3) further comprises strip double faced adhesive tapes (32), the strip double faced adhesive tapes (32) are provided with a plurality of, the gold-mica plate (31) is attached to the inner surface of the battery box cover (1) through the strip double faced adhesive tapes (32), and the strip foam (33) is attached to the gold-mica plate (31) through the strip double faced adhesive tapes (32).
4. A battery pack according to claim 2, wherein: the fire-resistant layer (3) comprises a gold mica plate (31) and three strip-shaped foam pieces (33), the area of the gold mica plate (31) is larger than that of a battery module (2) covered by the gold mica plate, the three strip-shaped foam pieces (33) are distributed above the battery module (2), the arrangement positions of the three strip-shaped foam pieces need to avoid the injection positions of explosion-proof valves (21) of the battery module (2), and gaps among the strip-shaped foam pieces (33) are exhaust channels (6).
5. A battery pack according to claim 2, wherein: the thickness of the fireproof layer (3) is determined by the clearance between the upper surface of the battery module (2) and the inner surface of the battery box cover (1), the thickness of the fireproof layer (3) is larger than the clearance between the upper surface of the battery module (2) and the inner surface of the battery box cover (1), and the strip foam (33) has 30% -50% compression.
6. A battery pack according to claim 2, wherein: the high temperature resistance of the gold mica plate (31) reaches 1000 ℃.
7. A battery pack according to claim 1, wherein: the battery box cover (1) is connected with the battery box body (4) through the sealing ring (5) at the periphery.
8. A battery pack as claimed in claim 7, wherein: the battery box cover (1) is characterized in that a first bending edge (11) is integrally fixed on the periphery of the battery box cover (1), a second bending edge (41) is integrally fixed on the periphery of the battery box body (4), and the bending angles of the first bending edge (11) and the second bending edge (41) are consistent.
9. A battery pack as claimed in claim 8, wherein: the first bending edge (11) and the second bending edge (41) are downwards bent for 90 degrees.
10. A battery pack according to claim 1, wherein: reinforcing ribs (12) are fixed on a plurality of positions of the battery box cover (1), and the battery box cover (1) is made of galvanized steel plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321737738.7U CN220420649U (en) | 2023-07-03 | 2023-07-03 | Battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321737738.7U CN220420649U (en) | 2023-07-03 | 2023-07-03 | Battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220420649U true CN220420649U (en) | 2024-01-30 |
Family
ID=89644938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321737738.7U Active CN220420649U (en) | 2023-07-03 | 2023-07-03 | Battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220420649U (en) |
-
2023
- 2023-07-03 CN CN202321737738.7U patent/CN220420649U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |