CN214254602U - Bottom guard plate assembly of lower shell of battery pack, lower shell of battery pack and battery pack - Google Patents
Bottom guard plate assembly of lower shell of battery pack, lower shell of battery pack and battery pack Download PDFInfo
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- CN214254602U CN214254602U CN202120408416.2U CN202120408416U CN214254602U CN 214254602 U CN214254602 U CN 214254602U CN 202120408416 U CN202120408416 U CN 202120408416U CN 214254602 U CN214254602 U CN 214254602U
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- battery pack
- backplate
- protection plate
- plate
- guard 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 bottom backplate subassembly of casing, battery package under battery package and battery package, the bottom backplate subassembly of casing includes under the battery package: the upper guard plate is used for supporting the battery cell of the battery pack; the lower guard plate is positioned below the upper guard plate and is spaced apart from the upper guard plate; the buffer piece is supported between the upper protection plate and the lower protection plate, and the thickness of the upper protection plate is different from that of the lower protection plate. From this, through last backplate, lower backplate and buffer cooperation, compare with prior art, when the backplate subassembly received the striking at the end, the backplate subassembly can absorb more collision energy at the end, can reduce the deflection of backplate to can protect electric core in the battery package better, and then can promote the safety in utilization of battery package.
Description
Technical Field
The utility model belongs to the technical field of the vehicle and specifically relates to a bottom backplate subassembly of casing, lower casing and a battery package of battery package down are related to.
Background
In the correlation technique, the bottom guard plate energy absorption effect of the lower shell of the battery pack is not good, and when the bottom guard plate of the lower shell is impacted, the deformation of the bottom guard plate is large, and the bottom guard plate can not well protect the battery cell in the battery pack.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, an object of the utility model is to provide a bottom protection plate subassembly of casing under battery package, this battery package bottom protection plate subassembly of casing can absorb more collision energy, can reduce the deflection of backplate to can protect electric core in the battery package better, and then can promote the safety in utilization of battery package.
The utility model further provides a lower casing of battery package.
The utility model further provides a battery package.
According to the utility model discloses a bottom backplate subassembly of casing includes under battery package: the upper protection plate is used for supporting the battery cell of the battery pack; a lower fender positioned below the upper fender and spaced apart from the upper fender; the buffer piece is supported between the upper protection plate and the lower protection plate, and the thickness of the upper protection plate is different from that of the lower protection plate.
According to the utility model discloses a bottom backplate subassembly of casing under battery package, through last backplate, lower backplate and buffer cooperation, compare with prior art, when bottom backplate subassembly received the striking, the bottom backplate subassembly can absorb more collision energy, can reduce the deflection of backplate to electric core in the battery package can be protected better, and then the safety in utilization of battery package can be promoted.
In some examples of the present invention, the upper protective plate has a thickness a, the lower protective plate has a thickness B, and the following relations are satisfied: A/B is more than or equal to 0.25 and less than 1.
In some examples of the present invention, the thickness of the buffer member is C, and satisfies the following relation: C/A is more than 0 and less than or equal to 3.
In some examples of the invention, A/B is 0.375 and C/A is 0.5.
In some examples of the invention, the angle between the buffer and the lower guard is β1The included angle between the buffer piece and the upper guard plate is beta2And satisfies the relation: beta is a1＝180°-β2。
In some examples of the invention, β1Satisfy the relation: beta is less than 0 DEG1≤90°。
In some examples of the present invention, the distance between the lower guard plate and the upper guard plate is H, and satisfies the following relation: H-23-a-B.
In some examples of the invention, the buffer is configured to support a diagonal rib.
The lower shell of the battery pack comprises a boundary beam; the edge beam is arranged on the circumferential edge of the bottom guard plate assembly, and the bottom guard plate assembly is the bottom guard plate assembly of the lower shell of the battery pack.
According to the utility model discloses a battery pack, including foretell battery pack's lower casing.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a cross-sectional view of a battery pack according to an embodiment of the present invention;
FIG. 2 is an enlarged view at D of FIG. 1;
fig. 3 is a side view of a battery pack according to an embodiment of the present invention;
fig. 4 is a top view of a battery pack according to an embodiment of the present invention.
Reference numerals:
a bottom shield assembly 100; a battery pack 200; a lower case 300;
a battery core 2;
an upper guard plate 10; a buffer space 11;
a lower guard plate 20;
a buffer member 30; the first sub-cushion 31; a second sub-bumper 32.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
A backplate assembly 100 of a battery pack case 300 according to an embodiment of the present invention will be described with reference to fig. 1 to 4.
As shown in fig. 1 to 4, a backplate assembly 100 according to an embodiment of the present invention includes: an upper fender 10, a lower fender 20, and a buffer 30. The upper protection plate 10 is used for supporting the battery cell 2 of the battery pack 200, the lower protection plate 20 is located below the upper protection plate 10 and is spaced apart from the upper protection plate 10, the buffer 30 is supported between the upper protection plate 10 and the lower protection plate 20, the thickness of the upper protection plate 10 is different from that of the lower protection plate 20, it should be noted that, in the up-down direction shown in fig. 1, the battery cell 2 of the battery pack 200 is disposed above the upper protection plate 10, the upper protection plate 10 can be used for supporting the battery cell 2 of the battery pack 200, the lower protection plate 20 is disposed below the upper protection plate 10, the thicknesses of the upper protection plate 10 and the lower protection plate 20 are different, the upper protection plate 10 and the lower protection plate 20 are disposed at intervals in the up-down direction shown in fig. 1, and the buffer 30 is disposed between the upper protection plate 10 and the lower protection plate 20.
Specifically, the upper protective plate 10 and the lower protective plate 20 may jointly define a buffer space 11, a buffer member 30 may be disposed in the buffer space 11, one end of the buffer member 30 is connected to the upper protective plate 10, and/or the other end of the buffer member 30 is connected to the lower protective plate 20, the buffer member 30 may be reliably supported between the upper protective plate 10 and the lower protective plate 20, when the lower protective plate 20 of the battery pack 200 is impacted, the buffer member 30 may collapse to absorb energy, the force transmitted to the upper protective plate 10 may be reduced, the deformation amount of the upper protective plate 10 may be reduced, thereby better protecting the electric core 2 in the battery pack 200, and further improving the safety of the battery pack 200.
Further, 2 outsides of electric core can be provided with the aluminum hull, and the aluminum hull can play the effect of protection electric core 2, and 2 upsides of electric core can be provided with the busbar, and the one end of keeping away from bolster 30 of going up backplate 10 can be provided with the structure and glue, goes up backplate 10 and can glue and be connected the setting with electric core 2 through the structure.
From this, through upper guard plate 10, lower guard plate 20 and the cooperation of buffer 30, compare with prior art, when end guard plate assembly 100 received the striking, end guard plate assembly 100 can absorb more collision energy, can reduce the deflection of upper guard plate 10 to electric core 2 in can protecting battery package 200 better, and then can promote battery package 200's safety in utilization.
In some embodiments of the present invention, as shown in fig. 2, the thickness of the upper guard plate 10 may be set to Amm, the thickness of the lower guard plate 20 may be set to Bmm, and the thickness of the upper guard plate 10 and the thickness of the lower guard plate 20 may satisfy the relation: 0.25 is more than or equal to A/B < 1, that is, the thickness of the upper protection plate 10 is at least one fourth of the thickness of the lower protection plate 20, wherein the thickness of the upper protection plate 10 and the thickness of the lower protection plate 20 refer to the thicknesses of the upper protection plate 10 and the lower protection plate 20 in the up-down direction shown in FIG. 1, and thus the ratio of the thicknesses of the upper protection plate 10 and the lower protection plate 20 is in a proper range, the bottom protection plate assembly 100 can have high rigidity, and when the lower protection plate 20 is impacted, the bottom protection plate assembly 100 can be ensured to have a good protection effect on the battery core 2 in the battery pack 200.
In some embodiments of the present invention, as shown in fig. 2, the thickness of the buffer member 30 may be set to cm, and the thickness of the buffer member 30 and the thickness of the upper guard plate 10 may satisfy the relation: C/A is more than 0 and less than or equal to 3, namely the thickness of the buffer member 30 can be set to be three times of that of the upper protection plate 10 to the maximum extent, so that the thickness ratio of the buffer member 30 to the upper protection plate 10 is in a proper range, and the buffer member 30 can have certain strength, thereby enabling the buffer member 30 to be reliably supported between the upper protection plate 10 and the lower protection plate 20, enabling the buffer member 30 to absorb more collision energy, and enabling the bottom protection plate assembly 100 to have higher rigidity.
Preferably, a/B may be 0.375, and C/a may be 0.5, that is, the ratio of the thickness of the upper protection plate 10 to the thickness of the lower protection plate 20 may be set to 0.375, and the ratio of the thickness of the buffer 30 to the thickness of the upper protection plate 10 may be set to 0.5, so that the thicknesses of the upper protection plate 10, the lower protection plate 20, and the buffer 30 are all within a suitable range, and it is ensured that the battery core 2 is not significantly deformed when the baseboard assembly 100 is subjected to an energy impact of 200J, so that the use safety of the battery pack 200 may be further ensured.
In some embodiments of the present invention, as shown in fig. 2, the angle between the buffer 30 and the lower guard plate 20 can be set to be β1The angle between the buffer 30 and the upper guard plate 10 can be set to be beta2，β1And beta2The relation can be satisfied: beta is a1＝180°-β2It is also understood that beta1And beta2The sum of the angles of (1) can be 180 °, and the included angle between the buffer 30 and the lower protective plate 20 and the included angle between the buffer 30 and the upper protective plate 10 can be set in various setting forms, so that the angles between the buffer 30 and the lower protective plate 20 and between the buffer 30 and the upper protective plate 10 can be conveniently set according to the weight of the battery cell 2 and the arrangement form of the battery cell 2.
In some embodiments of the present invention, the included angle between the buffer 30 and the lower guard plate 20 can satisfy the following relation: beta is less than 0 DEG1Less than or equal to 90 degrees, the included angle between the buffer member 30 and the lower guard plate 20 can be set to any angle between 0 degrees and 90 degrees, so that the included angle between the buffer member 30 and the lower guard plate 20 is suitable, and the buffer member 30 can be reliably supported between the upper guard plate 10 and the lower guard plate 20.
Preferably, the quantity of bolster 30 can set up to a plurality of, a plurality of bolsters 30 can be at the spaced setting of left and right sides direction that fig. 1 shows, the intensity that can guarantee backplate subassembly 100 is even like this, thereby can further guarantee backplate subassembly 100 and can play good supporting role to electric core 2 of battery package 200, and when backplate subassembly 100 receives to strike great, a plurality of bolsters 30 all can play the effect of buffering energy-absorbing, thereby can further improve backplate subassembly 100 and crumple the energy-absorbing effect, can further guarantee the safety in utilization of battery package 200.
Further, as shown in fig. 1 and 2, each buffer 30 may include: the first sub-cushion 31 and the second sub-cushion 32, that is, one first sub-cushion 31 and one second sub-cushion 32 may jointly form one cushion 30, and the included angles between the first sub-cushion 31 and the second sub-cushion 32 and the lower guard plate 20 may be set to be β1The included angles between the first sub-cushion 31 and the second sub-cushion 32 and the upper fender 10 can be set to be β2And, the included angles between the first sub-cushion member 31 and the second sub-cushion member 32 and the lower guard plate 20 can satisfy the relation: beta is less than 0 DEG1≤90°。
Further, the included angle between the first sub cushion member 31 and the lower guard plate 20 and the included angle between the second sub cushion member 32 and the lower guard plate 20 may be the same, for example, the included angle between the first sub cushion member 31 and the lower guard plate 20 may be set to 45 °, and the included angle between the second sub cushion member 32 and the lower guard plate 20 may also be set to 45 °. However, the present invention is not limited to this, the included angle between the first sub-buffer member 31 and the lower protective plate 20 and the included angle between the second sub-buffer member 32 and the lower protective plate 20 may also be different, for example, the included angle between the first sub-buffer member 31 and the lower protective plate 20 may be 45 °, and the included angle between the second sub-buffer member 32 and the lower protective plate 20 may be 90 °.
Optionally, the included angle between the first sub-cushion 31 and the lower protective plate 20 of the plurality of cushions 30 may be set to different angles, and the included angle between the second sub-cushion 32 and the lower protective plate 20 of the plurality of cushions 30 may also be set to different angles, so that the plurality of cushions 30 may have multiple setting forms, and thus the included angle between the plurality of first sub-cushions 31 and the plurality of second sub-cushions 32 of the plurality of cushions 30 and the lower protective plate 20 may be reasonably arranged according to different arrangement forms of the plurality of cells 2.
In some embodiments of the present invention, as shown in fig. 2, the distance between the lower protective plate 20 and the upper protective plate 10 may be set to Hmm, and H may satisfy the following relation: the Hmm is 23mm-Amm-Bmm, and it can also be understood that the thickness of the lower protective plate 20 and the thickness of the upper protective plate 10 are subtracted from 23mm, that is, the distance between the upper surface of the lower protective plate 20 and the lower surface of the upper protective plate 10, so that the distance between the lower protective plate 20 and the upper protective plate 10 can be reasonably designed according to the thickness of the lower protective plate 20 and the thickness of the upper protective plate 10, and thus the distance between the lower protective plate 20 and the upper protective plate 10 is suitable, and the bottom protective plate assembly 100 can be ensured to have good collapse energy absorption effect.
The utility model discloses an in some embodiments, bolster 30 can be constructed for supporting the tilted ribs, so set up can be convenient for set up bolster 30 between backplate 20 and last backplate 10 down to can improve backplate subassembly 100's production efficiency, and, the working property that supports the tilted ribs is reliable, through constructing bolster 30 for supporting the tilted ribs, can guarantee backplate subassembly 100's operational reliability.
According to the utility model discloses lower casing 300 of battery package 200, as shown in fig. 3 and fig. 4, lower casing 300 of battery package 200 includes boundary beam and backplate subassembly 100, backplate subassembly 100 is backplate subassembly 100 of above-mentioned embodiment, and the boundary beam sets up in backplate subassembly 100's circumference edge, through set up bolster 30 between last backplate 10 and backplate 20 down to can make lower casing 300 have good energy-absorbing effect, and then can guarantee battery package 200's safety in utilization.
According to the utility model discloses battery package 200, including the lower casing 300 of the battery package 200 of above-mentioned embodiment, when backplate subassembly 100 received the striking, backplate subassembly 100 can absorb more collision energy, can reduce the deflection of upper shield 10 to electric core 2 in the battery package 200 can be protected better, and then the safety in utilization of battery package 200 can be promoted.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
In the description of the present invention, "the first feature" and "the second feature" may include one or more of the features.
In the description of the present invention, "a plurality" means two or more.
In the description of the present invention, the first feature "on" or "under" the second feature may include the first and second features being in direct contact, and may also include the first and second features being in contact with each other not directly but through another feature therebetween.
In the description of the invention, the first feature being "on", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A backplate assembly (100) for a battery pack lower housing (300), comprising:
an upper protective plate (10), wherein the upper protective plate (10) is used for supporting the battery core (2) of the battery pack;
a lower fender (20), the lower fender (20) being located below the upper fender (10) and spaced apart from the upper fender (10);
a buffer member (30), wherein the buffer member (30) is supported between the upper protection plate (10) and the lower protection plate (20), and the thickness of the upper protection plate (10) is different from that of the lower protection plate (20).
2. The backplate assembly (100) of a battery pack lower case (300) according to claim 1, wherein the upper backplate (10) has a thickness of a and the lower backplate (20) has a thickness of B, satisfying the relationship: A/B is more than or equal to 0.25 and less than 1.
3. The backplate assembly (100) of a battery pack lower case (300) according to claim 2, wherein the bumper (30) has a thickness C satisfying the relationship: C/A is more than 0 and less than or equal to 3.
4. The backplate assembly (100) of the battery pack lower case (300) according to claim 3, wherein A/B is 0.375 and C/A is 0.5.
5. The backplate assembly (100) of a battery pack lower case (300) according to claim 1, wherein the angle between the bumper (30) and the backplate (20) is β1Said buffer member (30) and said upper shieldThe angle between the plates (10) is beta2And satisfies the relation: beta is a1＝180°-β2。
6. The backplate assembly (100) of the battery pack lower case (300) of claim 5, wherein β is β1Satisfy the relation: beta is less than 0 DEG1≤90°。
7. The backplate assembly (100) of a battery pack lower case (300) according to claim 2, wherein the lower backplate (20) is spaced apart from the upper backplate (10) by a distance H that satisfies the relationship: H-23-a-B.
8. The backplate assembly (100) of a battery pack lower case (300) according to claim 1, wherein the bumper (30) is configured to support a diagonal rib.
9. A lower case (300) of a battery pack (200), comprising:
a boundary beam;
a backplate assembly (100), the edge beams being provided at a circumferential edge of the backplate assembly (100), the backplate assembly (100) being the backplate assembly (100) of the battery pack lower case (300) according to any one of claims 1 to 8.
10. A battery pack (200), characterized by comprising the lower case (300) of the battery pack (200) according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120408416.2U CN214254602U (en) | 2021-02-24 | 2021-02-24 | Bottom guard plate assembly of lower shell of battery pack, lower shell of battery pack and battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120408416.2U CN214254602U (en) | 2021-02-24 | 2021-02-24 | Bottom guard plate assembly of lower shell of battery pack, lower shell of battery pack and battery pack |
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| Publication Number | Publication Date |
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| CN214254602U true CN214254602U (en) | 2021-09-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120408416.2U Active CN214254602U (en) | 2021-02-24 | 2021-02-24 | Bottom guard plate assembly of lower shell of battery pack, lower shell of battery pack and battery pack |
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| CN (1) | CN214254602U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113665684A (en) * | 2021-09-29 | 2021-11-19 | 蜂巢能源科技有限公司 | Vehicle body floor assembly of vehicle and vehicle |
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2021
- 2021-02-24 CN CN202120408416.2U patent/CN214254602U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113665684A (en) * | 2021-09-29 | 2021-11-19 | 蜂巢能源科技有限公司 | Vehicle body floor assembly of vehicle and vehicle |
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