CN219779081U - Battery box and battery pack - Google Patents
Battery box and battery pack Download PDFInfo
- Publication number
- CN219779081U CN219779081U CN202321131370.XU CN202321131370U CN219779081U CN 219779081 U CN219779081 U CN 219779081U CN 202321131370 U CN202321131370 U CN 202321131370U CN 219779081 U CN219779081 U CN 219779081U
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- battery
- blocking
- hanging column
- accommodating cavity
- reinforcing rib
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- 230000000903 blocking effect Effects 0.000 claims abstract description 91
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 80
- 238000001125 extrusion Methods 0.000 abstract description 19
- 230000005540 biological transmission Effects 0.000 abstract description 9
- 238000005728 strengthening Methods 0.000 abstract description 9
- 238000009778 extrusion testing Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 5
- 238000010521 absorption reaction Methods 0.000 abstract description 2
- 239000012141 concentrate Substances 0.000 abstract description 2
- 239000011324 bead Substances 0.000 description 9
- 239000000725 suspension Substances 0.000 description 6
- 238000003825 pressing Methods 0.000 description 4
- 230000004308 accommodation Effects 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
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- Battery Mounting, Suspending (AREA)
Abstract
The utility model discloses a battery box and a battery pack, wherein the battery box comprises: the hanging column is arranged at the edge of the battery box body; the first blocking part is arranged at intervals with the hanging column, is arranged close to the inside of the battery box body compared with the hanging column, and surrounds the hanging column so as to form a first accommodating cavity between the first blocking part and the hanging column; the first reinforcing rib is arranged in the first accommodating cavity, and two end parts of the first reinforcing rib are fixedly connected with the hanging column and the first blocking part respectively. This battery box is through setting up first strengthening rib that blocks portion and first holding intracavity, utilizes first strengthening rib to carry out the energy-absorbing, and the supplementary absorption of second blocking portion is remaining partial energy, when carrying out extrusion test to the battery box, concentrate on first strengthening rib because of the deformation that the extrusion force produced to weaken the transmission of extrusion force to the inside of battery box, avoided the battery package to receive the deformation of extruded in-process battery module, thereby guaranteed the security of battery package.
Description
Technical Field
The utility model relates to the technical field of batteries, in particular to a battery box and a battery pack.
Background
With the development and progress of technology, electric vehicles are increasingly used. A battery pack is provided in an electric vehicle for storing electric energy and supplying the electric vehicle with energy. The battery pack generally includes a battery case and a battery module provided in the battery case, the battery case providing support and protection for the battery module.
The electric vehicle may collide during traveling to generate a pressing force to the battery pack, and the battery module in the battery pack may be deformed due to the pressing force, thereby causing a safety accident. Therefore, how to avoid deformation of the battery module when the battery pack is pressed is a problem to be solved.
Disclosure of Invention
In order to solve the above-mentioned drawbacks in the prior art, an object of the present utility model is to provide a battery case with damping and energy absorbing functions.
In order to solve the above-mentioned drawbacks of the prior art, a second object of the present utility model is to provide a battery pack capable of avoiding deformation of an internal battery module when being pressed.
According to one of the purposes of the utility model, the technical scheme is as follows:
a battery case, comprising:
the hanging column is arranged at the edge of the battery box body;
the first blocking part is arranged at intervals with the hanging column, is arranged close to the inside of the battery box body compared with the hanging column, and surrounds the hanging column so as to form a first accommodating cavity between the first blocking part and the hanging column;
the first reinforcing rib is arranged in the first accommodating cavity, and two end parts of the first reinforcing rib are fixedly connected with the hanging column and the first blocking part respectively.
According to the battery box body, the first blocking part and the first reinforcing rib in the first accommodating cavity are arranged, the first reinforcing rib is used for absorbing energy, deformation generated by extrusion force is concentrated on the first reinforcing rib when the battery box body is subjected to extrusion test, and the first blocking part is combined for assisting in absorbing the rest part of energy, so that the transmission of the extrusion force to the inside of the battery box body is weakened.
The technical scheme provided by the second purpose of the utility model is as follows:
a battery pack comprises a battery module and the battery box body.
When the battery pack is subjected to extrusion test, the transmission of extrusion force to the inside of the battery box is weakened due to the arrangement of the battery box structure, so that the stress of the battery module is weakened, the deformation of the battery module in the extrusion process of the battery pack is avoided, and the safety of the battery pack is ensured.
Drawings
Fig. 1 is a schematic structural view of a battery case in an embodiment;
FIG. 2 is a schematic view of a first end beam in an embodiment;
fig. 3 is an enlarged view at a in fig. 2.
Wherein the reference numerals have the following meanings:
11. a first end beam; 12. a second end beam; 13. a first side member; 14. a second side member; 2. a hanging column; 3. a first blocking portion; 4. a first accommodation chamber; 5. a first reinforcing rib; 6. a second blocking portion; 7. a second accommodation chamber; 8. a second reinforcing rib; 9. a third accommodation chamber; 10. and a third reinforcing rib.
Detailed Description
For a better understanding and implementation, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model.
In the description of the present utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.
The embodiment provides a battery pack, the battery pack includes battery box and battery module, and the battery box includes outer frame and the bottom plate of annular structure, and the bottom plate is established in the bottom of outer frame, and both fixed connection, and battery module is established on the bottom plate to by outer frame surrounding, thereby support and protect battery module through the battery box. The battery module comprises a plurality of battery packs arranged side by side, and each battery pack comprises a plurality of single batteries which are stacked in sequence.
The battery pack is commonly used in electric equipment such as electric vehicle, and electric equipment such as electric vehicle is in the in-process of going or removing and is collided easily to produce extrusion force to the battery pack, battery module in the battery pack, more specifically monomer battery probably takes place to warp because of this extrusion force, and then causes the incident. To solve this problem, referring to fig. 1 and 2, the edge of the battery case is provided with a hanging post 2 and a first blocking portion 3, the first blocking portion 3 is disposed at intervals from the hanging post 2, and the first blocking portion 3 is disposed closer to the inside of the battery case than the hanging post 2 and surrounds the hanging post 2 to form a first accommodating cavity 4 between the first blocking portion 3 and the hanging post 2. The first accommodating cavity 4 is internally provided with a first reinforcing rib 5, and two end parts of the first reinforcing rib 5 are fixedly connected with the hanging column 2 and the first blocking part 3 respectively. The battery box of this embodiment utilizes first strengthening rib 5 to carry out the energy-absorbing through setting up first strengthening rib 5 in first blocking part 3 and the first chamber that holds 4, when carrying out extrusion test to the battery box, concentrate on first strengthening rib 5 because of the deformation that the extrusion force produced, and the supplementary transmission of remaining partial energy that absorbs of first blocking part that combines again to weaken the extrusion force to the inside transmission of battery box, and then weakened battery module and specifically be the atress of battery cell, avoided the battery package to receive the deformation of extruded in-process battery cell, thereby guaranteed the security of battery package.
More preferably, the thickness of the first blocking portion 3 in this embodiment is not less than the thickness of the first reinforcing rib 5, so that the first reinforcing rib 5 is used as a main energy-absorbing deformation body, so that most of energy is absorbed in the first accommodating cavity 4, and the rest of energy is absorbed by the first blocking portion 3 in the process of transmitting to the inside of the battery box, so that the stress of the battery module inside the battery box is greatly weakened, and the safety of the battery pack is ensured.
Further, the outer frame of the battery box body is provided with a hanging column 2, and the hanging column 2 is tightly attached to the side wall of the outer frame. Referring to fig. 3, the outer frame is further provided with a first blocking portion 3, the first blocking portion 3 and the hanging post 2 are arranged at intervals, the first blocking portion 3 is far away from the side wall of the outer frame compared with the hanging post 2, and two end portions of the first blocking portion 3 are fixedly connected with the side wall of the outer frame.
In this embodiment, the hanging post 2 is of a cylindrical structure, the first blocking portion 3 is of an arc structure, and two arc end portions are fixedly connected with the side wall of the outer frame, so that the hanging post 2 is surrounded by the side wall of the outer frame and the first blocking portion 3. On the basis, the two ends of the first reinforcing rib 5 are respectively fixedly connected with the side wall of the hanging column 2 and the inner side wall of the first blocking part 3, wherein the inner side wall is formed by taking the side wall of the outer frame and the area surrounded by the first blocking part 3 as inner side walls.
With regard to the thicknesses of the first blocking portion 3 and the first reinforcing rib 5 in the present embodiment, the thickness of the first blocking portion 3 refers to the thickness from the inner side wall to the outer side wall of the first blocking portion 3, and the thickness of the first reinforcing rib 5 refers to the thickness perpendicular to the extending direction of the first reinforcing rib 5 on the plane parallel to the bottom plate.
Furthermore, the thickness of the first blocking part 3 is larger than that of the first reinforcing rib 5, so that the energy absorption effect of the first accommodating cavity 4 and the first reinforcing rib 5 is better ensured, and the transmission of the extrusion force to the inside of the battery box body is further reduced.
Referring to fig. 1, the outer frame includes first and second end beams 11 and 12 disposed at opposite intervals, and first and second side beams 13 and 14 disposed at opposite intervals, the first and second end beams 11, 13, 12 and 14 being connected end to end in order to form an annular outer frame. Since the extrusion test of the battery pack is generally performed along the connecting line of the first end beam 11 and the second end beam 12, the suspension post 2 of the present embodiment is disposed on the first end beam 11 and/or the second end beam 12, and the suspension post 2 is disposed on the first end beam 11 for illustration, and may be adjusted according to the needs in practical applications.
Referring to fig. 2, opposite ends of the first end beam 11 far from the second end beam 12 are provided with hanging columns 2, each end can be provided with one hanging column 2, or as shown in fig. 2, each end is provided with two or more hanging columns 2 according to the requirement of hanging, and no matter how many hanging columns 2 are, each hanging column 2 is closely attached to the side wall of the first end beam 11. The first blocking portion 3 is disposed around the suspension post 2, and both end portions of the first blocking portion 3 are fixedly connected with side walls of corresponding end portions of the first end beam 11 to form a first accommodating chamber 4 between the first blocking portion 3 and the suspension post 2.
Referring to fig. 3, a plurality of first reinforcing ribs 5 are disposed in the first accommodating cavity 4, and the plurality of first reinforcing ribs 5 are disposed at intervals, that is, the ends of the plurality of first reinforcing ribs 5, which are located on the hanging post 2, are not overlapped, and the ends of the plurality of first reinforcing ribs 5, which are located on the first blocking portion 3, are not overlapped, so that the extrusion force suffered by the battery box body is dispersed, and stress concentration is avoided.
Further, a plurality of first strengthening ribs 5 are arranged in the first accommodating cavity 4 at equal intervals, so that the extrusion force born by the battery box body can be uniformly dispersed, and the first strengthening ribs 5 absorb energy better. The equal spacing means that the spacing between the corresponding positions of any two adjacent first reinforcing ribs 5 is equal.
Furthermore, the extending directions of the plurality of first reinforcing ribs 5 in this embodiment are different, so that the extrusion force from each direction can be absorbed, the transmission of the extrusion force to the inside of the battery box body is further weakened, the force born by the single battery in the battery box body is further reduced, the deformation probability of the single battery is further reduced, and the safety of the battery pack is ensured. Because the extending directions of the plurality of reinforcing ribs 5 are different, on the basis of equidistant arrangement, the angles between any two adjacent first reinforcing ribs 5 are equal.
In addition, referring to fig. 3, in order to better prevent deformation of the single battery, a second blocking portion 6 is disposed at a side of the first blocking portion 3 away from the suspension post 2 at intervals, two ends of the second blocking portion 6 are fixedly connected with end side walls of the corresponding first end beams 11, and surround the first blocking portion 3, so that a second accommodating cavity 7 is formed between the first blocking portion 3 and the second blocking portion 6, a second reinforcing rib 8 is disposed in the second accommodating cavity 7, two ends of the second reinforcing rib 8 are fixedly connected with the first blocking portion 3 and the second blocking portion 6 respectively, and a thickness of the second blocking portion 6 is not less than that of the second reinforcing rib 8. Preferably, the thickness of the second blocking portion 6 is greater than the thickness of the second reinforcing bead 8. Therefore, on the basis that the first reinforcing rib 5 absorbs energy and deforms first, the rest extrusion force can be absorbed by the second reinforcing rib 8 to further weaken the transmission of the extrusion force to the inside of the battery box, the force born by the single battery in the battery box is further reduced, the deformation probability of the single battery is further reduced, and therefore the safety of the battery pack is guaranteed.
The thickness of the second blocking portion 6 refers to the thickness from the inner side wall to the outer side wall of the second blocking portion 6, and the thickness of the second reinforcing rib 8 refers to the thickness perpendicular to the extending direction of the second reinforcing rib 8 on the plane parallel to the bottom plate.
Further, the second reinforcing ribs 8 are arranged at equal intervals, the number of the second reinforcing ribs 8 is equal to that of the first reinforcing ribs 5, and the extending directions are in one-to-one correspondence. Thereby, the pressing force can be smoothly transmitted from the first reinforcing bead 5 to the second reinforcing bead 8 to be absorbed better.
Still further, the second blocking portions 6 are provided with at least two second blocking portions 6, which are sequentially spaced from one side of the first blocking portion 3 away from the suspension post 2, two end portions of each second blocking portion 6 are fixedly connected with the end portion side wall of the corresponding first end beam 11, the second blocking portions 6 far away from the first blocking portion 3 surround the second blocking portions 6 near the first blocking portion 3, so that a third accommodating cavity 9 is formed between two adjacent second blocking portions 6, a third reinforcing rib 10 is arranged in the third accommodating cavity 9, two end portions of the third reinforcing rib 10 are respectively fixedly connected with the two second blocking portions 6 corresponding to the third accommodating cavity 9, and the thickness of the second blocking portion 6 is not less than that of the third reinforcing rib 10. Preferably, the thickness of the second blocking portion 6 is greater than the thickness of the third reinforcing bead 10. From this, this embodiment gradually absorbs the extrusion force through the strengthening rib of layer upon layer, has weakened the transmission of extrusion force to the battery box inside greatly, and the power that the battery cell in the battery box bore reduces by a wide margin, and the probability that the battery cell warp further reduces to the security of battery package has been guaranteed.
The thickness of the third bead 10 is a thickness perpendicular to the extending direction of the third bead 10 on a plane parallel to the bottom plate.
Further, a plurality of third reinforcing ribs 10 are arranged in each third accommodating cavity 9 at equal intervals, the number of the third reinforcing ribs 10 is equal to that of the first reinforcing ribs 5, and the extending directions are in one-to-one correspondence. Thereby, the pressing force can be smoothly transmitted from the first reinforcing bead 5 to the second reinforcing bead 8 and then smoothly transmitted to the third reinforcing bead 10 to be absorbed better.
It should be noted that, in this embodiment, it is only necessary to ensure that the thickness of the first blocking portion 3 is greater than the thickness of the first reinforcing rib 5, and the thickness of the second blocking portion 6 is greater than the thicknesses of the second reinforcing rib 8 and the third reinforcing rib 10, and the thicknesses of the first blocking portion 3 and the second blocking portion 6 are not particularly required, and may be equal or unequal, and in the case where a plurality of second blocking portions 6 are provided, the thicknesses between a plurality of second blocking portions 6 are not particularly required, may be completely equal, may be partially equal, or may be completely unequal.
In addition, referring to fig. 3, the side walls of the first end beam 11 may have different thicknesses at different positions, which may cause the number of the first reinforcing ribs 5, the second reinforcing ribs 8 and the third reinforcing ribs 10 in each third accommodating cavity 9 to be unequal, which is allowed, only by ensuring that the first reinforcing ribs 5, the second reinforcing ribs 8 and the third reinforcing ribs 10 in each third accommodating cavity 9 with equal numbers can be in one-to-one correspondence and have the same extending direction, and searching for suitable position settings for the plurality of first reinforcing ribs 5 and/or the second reinforcing ribs 8 and/or the third reinforcing ribs 10 in each third accommodating cavity 9.
The technical means disclosed by the scheme of the utility model is not limited to the technical means disclosed by the embodiment, and also comprises the technical scheme formed by any combination of the technical features. It should be noted that modifications and adaptations to the utility model may occur to one skilled in the art without departing from the principles of the present utility model and are intended to be within the scope of the present utility model.
Claims (10)
1. A battery box, comprising:
the hanging column is arranged at the edge of the battery box body;
the first blocking part is arranged at intervals with the hanging column, is arranged close to the inside of the battery box body compared with the hanging column, and surrounds the hanging column so as to form a first accommodating cavity between the first blocking part and the hanging column;
the first reinforcing rib is arranged in the first accommodating cavity, and two end parts of the first reinforcing rib are fixedly connected with the hanging column and the first blocking part respectively.
2. A battery compartment as defined in claim 1, wherein: the thickness of the first blocking part is not smaller than that of the first reinforcing rib.
3. A battery compartment as defined in claim 1, wherein: the battery box body comprises a first end beam, a second end beam, a first side beam and a second side beam, wherein the first end beam and the second end beam are arranged at intervals, the first side beam and the second side beam are arranged at intervals, and the first end beam, the first side beam, the second end beam and the second side beam are sequentially connected end to form an annular outer frame;
the lifting columns are arranged at two positions, located at two opposite ends of the first end beam, close to the side wall of the first end beam, of the lifting columns, two ends of the first blocking portion are fixedly connected with the corresponding side wall of the first end beam on the periphery of the lifting columns, and the lifting columns are surrounded by the first blocking portion and the side wall of the first end beam.
4. A battery compartment as defined in claim 1, wherein: the first reinforcing ribs are arranged at intervals, the extending directions of the first reinforcing ribs are different, and the angles between any two adjacent first reinforcing ribs in the first reinforcing ribs are equal.
5. A battery compartment as claimed in claim 3, wherein: the first blocking part is provided with a second blocking part at intervals on one side far away from the hanging column, two end parts of the second blocking part are fixedly connected with the side wall of the outer frame and surround the first blocking part, a second accommodating cavity is formed between the first blocking part and the second blocking part, and a second reinforcing rib is arranged in the second accommodating cavity, and two end parts of the second reinforcing rib are fixedly connected with the first blocking part and the second blocking part respectively.
6. A battery compartment as defined in claim 5, wherein: the number of the second reinforcing ribs is equal to that of the first reinforcing ribs, and the extending directions are in one-to-one correspondence.
7. A battery compartment as defined in claim 5, wherein: the second blocking portions are provided with at least two, at least two second blocking portions are arranged at intervals from one side, away from the hanging column, of the first blocking portions, two end portions of each second blocking portion are fixedly connected with the side wall of the outer frame, the second blocking portions far away from the first blocking portions surround the second blocking portions near the first blocking portions, so that a third accommodating cavity is formed between two adjacent second blocking portions, third reinforcing ribs are arranged in the third accommodating cavity, and two end portions of each third reinforcing rib are fixedly connected with the two second blocking portions corresponding to the third accommodating cavity respectively.
8. A battery compartment as recited in claim 7, wherein: the number of the third reinforcing ribs in each third accommodating cavity is equal to that of the second reinforcing ribs, and the extending directions are in one-to-one correspondence.
9. A battery compartment as recited in claim 7, wherein: the thickness of the second reinforcing rib and the thickness of the third reinforcing rib are not larger than the thickness of the second blocking portion.
10. A battery pack, characterized in that: comprising a battery module and a battery case according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321131370.XU CN219779081U (en) | 2023-05-11 | 2023-05-11 | Battery box and battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321131370.XU CN219779081U (en) | 2023-05-11 | 2023-05-11 | Battery box and battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219779081U true CN219779081U (en) | 2023-09-29 |
Family
ID=88131469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321131370.XU Active CN219779081U (en) | 2023-05-11 | 2023-05-11 | Battery box and battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219779081U (en) |
-
2023
- 2023-05-11 CN CN202321131370.XU patent/CN219779081U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |