CN215911511U - Lower casing and vehicle of battery package - Google Patents
Lower casing and vehicle of battery package Download PDFInfo
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- CN215911511U CN215911511U CN202121879954.6U CN202121879954U CN215911511U CN 215911511 U CN215911511 U CN 215911511U CN 202121879954 U CN202121879954 U CN 202121879954U CN 215911511 U CN215911511 U CN 215911511U
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- battery pack
- lower case
- bottom plate
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- 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
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Abstract
The utility model discloses a lower shell of a battery pack and a vehicle, wherein the lower shell of the battery pack comprises: inferior valve main part is equipped with the curb plate in the inferior valve main part and centers on the installation department that the curb plate set up, and the installation department is used for with last casing installation, and the one end that is close to the curb plate of installation department is equipped with reserves the inclined plane, is equipped with first flame retardant coating on reserving the inclined plane. According to the utility model, the first fireproof layer is arranged on the reserved inclined plane of the mounting part, so that the fire resistance of the mounting part can be improved, and the probability of deformation of the mounting part caused by heating is reduced, thereby avoiding the damage caused by deformation when the lower shell and the upper shell are combined, and improving the safety of the battery pack.
Description
Technical Field
The utility model relates to the technical field of power battery packs, in particular to a lower shell of a battery pack and a vehicle.
Background
The current social energy crisis is increasingly prominent, the application call for new energy is higher and higher, and new energy automobiles become a new energy industry which is vigorously supported by various countries. The power battery pack is a core component of new energy and provides power for the whole vehicle, and the shell of the battery pack is an important part of the power battery pack. The case of the conventional battery pack is not fire-resistant and is easily dangerous.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention is directed to a lower case of a battery pack.
In order to achieve the purpose, the technical scheme of the utility model is realized as follows:
a lower case of a battery pack, comprising: inferior valve main part, be equipped with the curb plate in the inferior valve main part and center on the installation department that the curb plate set up, the installation department be used for with last casing installation, being close to of installation department the one end of curb plate is equipped with reserves the inclined plane, be equipped with first flame retardant coating on reserving the inclined plane.
According to the lower shell of the battery pack, the first fireproof layer is arranged on the reserved inclined plane of the mounting part, so that the fire resistance of the mounting part can be improved, the probability that the mounting part is deformed when being heated is reduced, the lower shell is prevented from being deformed and damaged when being combined with the upper shell, and the safety of the battery pack is improved.
In addition, the lower case of the battery pack according to the above-described embodiment of the present invention may also have the following additional technical features:
according to some embodiments of the present invention, a bottom plate is disposed on the lower case main body, a plurality of first reinforcing ribs are disposed on the bottom plate, a plurality of second reinforcing ribs are disposed on the side plate, and the plurality of second reinforcing ribs are sequentially spaced apart along a length direction of the side plate; the lower case main body further includes: the mounting beam is arranged on at least two opposite sides of the lower shell main body, a plurality of third reinforcing ribs are arranged between the mounting beam and the lower shell main body, and the third reinforcing ribs are arranged along the length direction of the mounting beam in a spaced mode in sequence.
According to some embodiments of the present invention, the lower case main body is provided with a receiving groove, and the second reinforcing rib extends in a groove depth direction of the receiving groove and is connected to the bottom plate.
According to some embodiments of the utility model, the bottom plate is provided with an exhaust hole, and a side of the bottom plate away from the accommodating groove is provided with a fire-resistant sealing ring, and the fire-resistant sealing ring is arranged around the exhaust hole.
According to some embodiments of the utility model, the side surfaces of the base plate and the side plates within the receiving slot are coated with a second fire resistant layer.
According to some embodiments of the utility model, the second fire protection layer is a coating layer comprising silica particles and polymeric silica gel.
According to some embodiments of the utility model, the first fire-blocking layer is a modified polymer coating layer comprising vinyl acetate.
According to some embodiments of the utility model, a seal is provided on the mounting portion for stopping against the upper housing.
According to some embodiments of the utility model, the inner side wall of the side plate is provided with a lifting rib.
According to some embodiments of the utility model, the bottom plate is provided with lifting ribs.
Another object of the utility model is to propose a vehicle.
In order to achieve the purpose, the technical scheme of the utility model is realized as follows:
a vehicle, comprising: a vehicle body; the battery pack comprises a lower shell, an upper shell and an electric core, wherein the lower shell is the lower shell of the battery pack, and the electric core is arranged in the lower shell. The vehicle and the lower case of the battery pack have the same advantages as those of the prior art, and thus, detailed description thereof is omitted.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:
fig. 1 is a schematic structural view of a lower case of a battery pack according to an embodiment of the present invention;
fig. 2 is a schematic view showing the bottom structure of the lower case of the battery pack in the embodiment of the present invention;
fig. 3 is a schematic structural view of a battery pack according to an embodiment of the present invention;
FIG. 4 is an enlarged view of a portion of FIG. 3 at I;
fig. 5 is a schematic view of the first flame resistant layer of fig. 4 in an expanded state.
Reference numerals:
100-a lower case of a battery pack,
10-a lower shell main body, 11-a containing groove, 12-a bottom plate, 121-a first reinforcing rib, 122-an exhaust hole, 123-a fireproof sealing ring, 13-a side plate, 131-a second reinforcing rib, 132-a hoisting protruding rib, 14-an installation part, 141-a reserved inclined plane, 142-a first fireproof layer and 143-a sealing element,
20-a hanging beam, 30-a third reinforcing rib,
1000-battery pack, 200-upper case.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The present invention will be described in detail with reference to fig. 1 to 5 in conjunction with examples.
As shown in fig. 1, 3 and 4, a lower case 100 of a battery pack according to an embodiment of the present invention includes a lower case main body 10.
The lower casing body 10 is provided with a side plate 13 and an installation part 14 arranged around the side plate 13, the installation part 14 is used for being installed on the upper casing 200, one end of the installation part 14 close to the side plate 13 is provided with a reserved inclined plane 141, and the reserved inclined plane 141 is provided with a first fireproof layer 142. The first fireproof layer 142 prevents the lower case main body 10 from being damaged by flames, and prevents the lower case main body from being deformed, thereby improving safety.
According to the lower case 100 of the battery pack of the embodiment of the utility model, the first fireproof layer 142 is arranged on the reserved inclined surface 141 of the mounting part 14, so that the fire resistance of the mounting part 14 can be improved, the probability that the mounting part 14 is deformed by heating can be reduced, the lower case 100 is prevented from being deformed and damaged when being combined with the upper case 200, and the safety of the battery pack 1000 is improved.
As shown in fig. 1, according to some embodiments of the present invention, a bottom plate 12 is provided on a lower case body 10, a plurality of first reinforcing ribs 121 are provided on the bottom plate 12, a plurality of second reinforcing ribs 131 are provided on a side plate 13, and the plurality of second reinforcing ribs 131 are sequentially spaced apart along a length direction of the side plate 13.
The lower casing main body 10 is used for bearing an electric core (not shown in the figure), needs large volume and high strength, and is arranged on the bottom plate 12 through arranging a plurality of first reinforcing ribs 121 to reinforce the strength of the bottom plate 12, and meanwhile, the bottom plate 12 with large volume is provided with the first reinforcing ribs 121 to avoid deformation of the lower casing main body 10 in various processes of stamping and bending, so that the performance of the lower casing 100 is improved. The side plate 13 is provided with the plurality of second reinforcing ribs 131 at intervals along the length direction, so that the situation that the overall strength of the side plate 13 is weak due to overlong length is avoided, and the strength of the side plate 13 is enhanced by the second reinforcing ribs 131.
Inferior valve main part 10 still includes carries roof beam 20, carries roof beam 20 and establishes in inferior valve main part 10 the relative both sides at least, is equipped with a plurality of third strengthening ribs 30 between carrying roof beam 20 and inferior valve main part 10, and a plurality of third strengthening ribs 30 set up along the length direction of carrying roof beam 20 at a distance from in proper order. The mounting beam 20 is connected to the vehicle body for fixing the lower case 100, and the lower case 100 is more stable on the vehicle body by providing the plurality of third reinforcing ribs 30 on the mounting beam 20 to reinforce the strength of the mounting beam 20 and simultaneously reinforce the stability of connection between the mounting beam 20 and the lower case main body 10. The strength of the lower case 100 is enhanced by providing the first, second, and third reinforcing ribs 121, 131, and 30, and the safety of the lower case 100 of the battery pack is improved.
As shown in fig. 1, according to some embodiments of the present invention, the first reinforcing bead 121 extends along the length direction and/or the length direction of the base plate 12. For example, the four first beads 121 extend in the longitudinal direction of the base plate 12, that is, the four first beads 121 extend in the front-rear direction, the first beads 121 extend from the foremost end of the base plate 12 to the rearmost end of the base plate 12, and the four first beads 121 extending in the front-rear direction reinforce the strength of the base plate 12. Alternatively, the two first beads 121 extend in the width direction of the base plate 12, that is, the two first beads 121 extend in the left-right direction, the first beads 121 extend from the leftmost end of the base plate 12 to the rightmost end of the base plate 12, and the two first beads 121 extending in the left-right direction reinforce the strength of the base plate 12. Further alternatively, the four first beads 121 extend along the longitudinal direction of the base plate 12, while the two first beads 121 extend along the width direction of the base plate 12, and the four first beads 121 extending along the longitudinal direction of the base plate 12 intersect with the two beads extending along the width direction of the base plate 12, thereby further enhancing the strength of the entire base plate 12.
As shown in fig. 1, according to some embodiments of the present invention, the first reinforcing bead 121 is a vertical elongated bead, and a bottom surface of the vertical elongated bead is provided on the bottom plate 12.
As shown in fig. 1, according to some embodiments of the present invention, the receiving groove 11 is formed on the lower case body 10, and the second reinforcing rib 131 extends in a groove depth direction of the receiving groove 11 and is connected to the bottom plate 12. For example, the side plate 13 is disposed at the right end of the bottom plate 12, the groove depth direction of the accommodating groove 11 is the vertical direction, the second rib 131 on the side plate 13 is disposed at the left side of the side plate 13, and the second rib 131 extends from the side plate 13 to the bottom plate 12, so that the strength of the side plate 13 is enhanced, the supporting strength of the side plate 13 in the left-right direction is enhanced, and the side plate 13 is prevented from being bent in the left-right direction.
As shown in fig. 1, according to some embodiments of the present invention, the second reinforcing rib 131 is a triangular diagonal rib, one side of which is disposed on the side plate 13, and the other side of which is disposed on the bottom plate 12.
As shown in fig. 1 and 2, according to some embodiments of the present invention, the bottom plate 12 is provided with a vent hole 122, and a side of the bottom plate 12 away from the receiving groove 11 is provided with a refractory sealing ring 123, and the refractory sealing ring 123 is disposed around the vent hole 122. The lower casing 100 is used for bearing an electric core, leakage and explosion of the battery pack 1000 may occur in a thermal runaway state, and the vent holes 122 are formed in the bottom plate 12 to control air flow, smoke and flame generated by explosion of the battery pack 1000 to move towards a specific direction, so that the air flow, smoke and flame are prevented from spreading to a passenger cabin, and the safety is improved. The fireproof sealing ring 123 is an o-shaped high-fireproof sealing ring, a circle of firewall is formed when the battery pack 1000 is out of control due to thermal runaway by the o-shaped high-fireproof sealing ring, movement of airflow, smoke and flame in a specific direction is controlled, and safety is further improved.
As shown in fig. 1, in some embodiments, at least two opposite sides of the discharge hole 122 are provided with first reinforcing ribs 121. For example, the first reinforcing rib 121 extending in the left-right direction penetrates through the exhaust hole 122, and the strength of the bottom plate 12 near the exhaust hole 122 is enhanced by the first reinforcing rib 121, so that the exhaust hole 122 is more stable on the bottom plate 12, and the capacity of the exhaust hole 122 for bearing high-pressure smoke is improved.
According to some embodiments of the utility model, the side surfaces of the bottom plate 12 and the side plates 13 within the receiving tank 11 are coated with a second fire resistant layer (not shown), which improves the fire resistance of the surfaces of the receiving tank 11 and improves safety by providing a second fire resistant layer.
According to some embodiments of the utility model, the second fire-blocking layer is a coating layer comprising silica particles and polymeric silica gel. Under the condition that battery package 1000 takes place thermal runaway, battery package 1000 produces high pressure, high temperature air current and flame, and through setting up the coating that contains silica particle and polymer silica gel, holding tank 11 can bear the thermal shock of repetition to can be able to bear the high temperature of 1500 degrees centigrade, strengthened passenger's security.
According to some embodiments of the present invention, the sealing member 143 is disposed on the mounting portion 14, the sealing member 143 is configured to abut against the upper case 200, a gap is defined between the mounting portion 14 and the upper case 200, the gap is disposed adjacent to the sealing member 143, the first fireproof layer 142 expands to one side of the gap after being heated, and by disposing the first fireproof layer 142, the gap between the mounting portion 14 and the upper case 200 is sealed by the first fireproof layer 142 after the first fireproof layer 142 expands due to being heated, so that flame is prevented from leaking out of the gap to the battery pack 1000, and safety is improved. For example, the first flame retardant layer 142 expands to the gap side after being heated, and the expanded first flame retardant layer 142 fills the gap to close the gap. Alternatively, the first fireproof layer 142 expands to one side of the gap after being heated, the expanded first fireproof layer 142 is located outside the gap, and the expanded first fireproof layer 142 seals the gap opening of the gap, so that the gap is sealed.
In the prior art, a gap is generally formed between the upper case 200 and the lower case main body, and when thermal runaway occurs inside the battery pack 1000, flame may leak out of the battery pack 1000, causing danger. The utility model is provided with the reserved inclined plane 141, the reserved inclined plane 141 is positioned at one end of the mounting part 14 close to the inner side of the lower shell main body 10, when thermal runaway occurs in the battery pack 1000, the temperature in the battery pack 1000 rapidly rises, and the first fireproof layer 142 on the reserved inclined plane 141 expands after being heated to block a gap between the upper shell 200 and the lower shell 100, so that flame and high-temperature smoke are blocked at one side of the expanded first fireproof layer 142.
As shown in fig. 1, 3, 4, and 5, the sealing material 143 is a sealing foam, the sealing foam is provided on the mounting portion 14, and the mounting portion 14 is connected to the upper housing 200. The mounting portion 14 is used to connect the upper case 200, when the upper case 200 is mounted on the lower case body 10, there may be a gap between the upper case 200 and the mounting portion 14, and the sealing foam is provided on the mounting portion 14 to block the gap, thereby improving the sealing property between the upper case 200 and the mounting portion 14. Set up first flame retardant coating 142 on reserving inclined plane 141, when battery package 1000 takes place the thermal runaway, first flame retardant coating 142 isolated flame, avoids flame to reveal from the clearance between installation department 14 and last casing 200 and protects sealed bubble cotton simultaneously, improves casing 100's life down.
As shown in fig. 1, 3, 4, and 5, according to some embodiments of the utility model, the first flame-retardant layer 142 is a modified polymer coating layer containing vinyl acetate. When battery package 1000 takes place thermal runaway, the modified polymer coating that contains vinyl acetate toasts under the high temperature and expands 20 to 50 times rapidly, and first flame retardant coating 142 after the inflation forms "prevent hot wall" and isolate flame in holding tank 11, and first flame retardant coating 142 is 1200 degrees high temperatures resistant, avoids flame to reveal from the clearance between installation department 14 and last casing 200 and protects sealed bubble cotton simultaneously.
As shown in fig. 1 and 2, according to some embodiments of the present invention, the side plate 13 is provided with a lifting rib 132. For example, two hoisting ribs 132 are respectively arranged on the side plates 13 at the front side and the rear side, so that the lower shell 100 is stably hoisted, the volume of the lower shell 100 of the battery pack is large, the hoisting ribs 132 are matched with a hoisting tool, the lower shell 100 is hoisted when the lower shell 100 is installed, the lower shell 100 is convenient to move, and the installation efficiency of the lower shell 100 is improved.
According to some embodiments of the present invention, the bottom plate 12 is provided with a lifting rib 132. For example, four hoisting ribs 132 are arranged on the bottom plate 12, and the four hoisting ribs 132 are respectively close to four corners of the bottom plate 12, so as to realize stable hoisting of the lower shell 100.
In some embodiments, the lower case body 10 and the mounting beam 20 are integrally formed. The lower shell body 10 and the mounting beam 20 are integrally formed by low-pressure casting, so that the manufacturing cost of the lower shell 100 is reduced.
According to some embodiments of the present invention, the third reinforcing rib 30 is a triangular diagonal rib, one surface of which is provided on the side plate 13 and the other surface of which is provided on the mounting portion 14.
One embodiment of the lower case 100 of the battery pack according to the present invention will be described with reference to fig. 1 to 5.
A lower case 100 of a battery pack includes: a lower case body 10, and a mounting beam 20.
The lower case body 10 is provided with a housing groove 11, a bottom plate 12, a side plate 13, and a mounting portion 14.
The bottom plate 12 is provided with a first reinforcing rib 121 and an exhaust hole 122. Six first reinforcing ribs 121 are provided on the base plate 12, wherein four first reinforcing ribs 121 extend along the length direction of the base plate 12, that is, the four first reinforcing ribs 121 extend along the front-rear direction; the other two first reinforcing beads 121 extend in the width direction of the base plate 12, i.e., the other two first reinforcing beads 121 extend in the left-right direction. The exhaust holes 122 are provided on the two first reinforcing ribs 121 extending in the left-right direction, and on the side of the bottom plate 12 away from the accommodating groove 11, the fireproof seal rings 123 are provided around the exhaust holes 122.
Around bottom plate 12 around there being four curb plates 13, all be equipped with second strengthening rib 131 on two curb plates 13 at both ends about bottom plate 12, second strengthening rib 131 is the triangle brace bead, sixteen second strengthening rib 131 along the length direction of curb plate 13 spaced apart the setting in proper order, sixteen second strengthening rib 131 along the spaced apart setting of fore-and-aft direction promptly, second strengthening rib 131 extends to bottom plate 12 along the groove depth direction of holding tank 11 on. Two hoisting convex ribs 132 are respectively arranged on the two side plates 13 at the front end and the rear end of the bottom plate 12. The side surfaces of the bottom plate 12 and the side plates 13 in the accommodating groove 11 are coated with second fireproof layers, and the second fireproof layers are coatings containing silicon dioxide particles and high polymer silica gel.
The mounting beam 20 is arranged on the left side and the right side of the lower shell main body 10, a plurality of third reinforcing ribs 30 are arranged between the mounting beam 20 and the side plates 13, the third reinforcing ribs 30 are triangular oblique ribs, and the plurality of third reinforcing ribs 30 are arranged along the length direction of the mounting beam 20 at intervals in sequence.
As shown in fig. 3, a vehicle (not shown) according to an embodiment of the present invention includes: a vehicle body (not shown), a battery pack 1000.
The battery pack 1000 includes a lower casing 100, an upper casing 200, and a battery cell, where the lower casing 100 is the lower casing 100 of the battery pack, the battery cell is disposed in the lower casing 100, the upper casing 200 is disposed on the lower casing 100, the lower casing 100 is disposed on the floor of the vehicle body, and the lower casing 100 is fixed on the vehicle body by the connection between the mounting beam 20 and the bottom plate 12.
According to the vehicle of the embodiment of the present invention, the strength of the lower case 100 is enhanced by providing the first, second, and third reinforcing beads 121, 131, and 30, and the safety of the lower case 100 of the battery pack is improved.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (11)
1. A lower case (100) of a battery pack, comprising:
inferior valve main part (10), be equipped with curb plate (13) on inferior valve main part (10) and center on installation department (14) that curb plate (13) set up, installation department (14) are used for installing with last casing (200), being close to of installation department (14) the one end of curb plate (13) is equipped with reservation inclined plane (141), be equipped with first flame retardant coating (142) on reservation inclined plane (141).
2. The lower case (100) of the battery pack according to claim 1, wherein the lower case body (10) is provided with a bottom plate (12), the bottom plate (12) is provided with a plurality of first reinforcing ribs (121), the side plate (13) is provided with a plurality of second reinforcing ribs (131), and the plurality of second reinforcing ribs (131) are sequentially spaced apart in a length direction of the side plate (13);
the lower case main body (10) further includes: carry roof beam (20), carry roof beam (20) and establish the at least relative both sides of inferior valve main part (10), carry roof beam (20) with be equipped with a plurality of third strengthening ribs (30) between shell main part (10), it is a plurality of third strengthening rib (30) are followed the length direction of carrying roof beam (20) is spaced apart the setting in proper order.
3. The lower case (100) of the battery pack according to claim 2, wherein the lower case main body (10) is provided with a receiving groove (11), and the second reinforcing rib (131) extends in a groove depth direction of the receiving groove (11) and is coupled to the bottom plate (12).
4. The lower case (100) of the battery pack according to claim 2, wherein the bottom plate (12) is provided with a vent hole (122), and one side of the bottom plate (12) away from the receiving groove (11) is provided with a fire-resistant sealing ring (123), and the fire-resistant sealing ring (123) is disposed around the vent hole (122).
5. The lower case (100) of the battery pack according to claim 2, wherein the sides of the bottom plate (12) and the side plates (13) within the receiving groove (11) are coated with a second fireproof layer.
6. The lower case (100) of the battery pack according to claim 5, wherein the second fireproof layer is a coating layer containing silica particles and polymer silica gel.
7. The lower case (100) of the battery pack according to claim 6, wherein the first flame retardant layer (142) is a modified polymer coating layer containing vinyl acetate.
8. The lower case (100) of the battery pack according to claim 1, wherein a sealing member (103) is provided on the mounting portion (14), the sealing member (103) being adapted to be stopped against the upper case (200).
9. The lower case (100) of the battery pack according to claim 1, wherein the inner side wall of the side plate (13) is provided with a lifting rib (132).
10. The lower case (100) of the battery pack according to claim 1, wherein the bottom plate (12) is provided with a lifting rib (132).
11. A vehicle, characterized by comprising:
a vehicle body;
battery pack (1000), the battery pack (1000) comprising a lower housing (100), an upper housing (200), an electrical core, the lower housing (100) being the lower housing (100) of the battery pack according to any one of claims 1 to 10, the electrical core being provided within the lower housing (100).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121879954.6U CN215911511U (en) | 2021-08-12 | 2021-08-12 | Lower casing and vehicle of battery package |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121879954.6U CN215911511U (en) | 2021-08-12 | 2021-08-12 | Lower casing and vehicle of battery package |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215911511U true CN215911511U (en) | 2022-02-25 |
Family
ID=80291263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121879954.6U Active CN215911511U (en) | 2021-08-12 | 2021-08-12 | Lower casing and vehicle of battery package |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215911511U (en) |
-
2021
- 2021-08-12 CN CN202121879954.6U patent/CN215911511U/en active Active
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