CN213042998U - Battery box, battery package and vehicle - Google Patents
Battery box, battery package and vehicle Download PDFInfo
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- CN213042998U CN213042998U CN202021693433.7U CN202021693433U CN213042998U CN 213042998 U CN213042998 U CN 213042998U CN 202021693433 U CN202021693433 U CN 202021693433U CN 213042998 U CN213042998 U CN 213042998U
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- box body
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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 relates to the technical field of batteries, and provides a battery box body, a battery pack and a vehicle, the battery box body comprises a lower box body and a plurality of structural beams which are arranged in the lower box body at intervals, and each structural beam is provided with a lower end part close to the bottom end part of the lower box body and an upper end part opposite to the lower end part; in the height direction of the structural beam, the variation tendency of the thickness of the lower end portion to the thickness of the upper end portion is first reduced and then increased. The utility model provides a battery box, in the thickness direction, the upper end of each structure roof beam and the thickness of tip down all are greater than the thickness at structure roof beam middle part for the middle part of structure roof beam is the structure of indent, and like this, battery module has been satisfied at life's final stage, and the required space requirement of outside bulging deformation in its middle part, and simultaneously, the upper end of structure roof beam and the tip down can keep the required thickness requirement of sufficient installation intensity, and like this, after the processing in the compromise, the mechanical strength of structure roof beam does not have obvious decline.
Description
Technical Field
The utility model relates to a battery technology field especially provides a battery box, have battery package of this battery box and have vehicle of this battery package.
Background
With the increasing prominence of environmental pollution and energy problems, the development of new energy automobiles is an effective way to solve the problems. The key problems that the new energy automobile needs to be popularized and applied urgently are that the servicing quality of the new energy automobile is reduced, the endurance mileage is improved, and the product cost is reduced.
Generally, the battery box body accounts for 20% -30% of the weight of the battery pack, and development of light-weight and low-cost structural design and manufacturing of the battery box body is of great significance. However, attention is also paid to the structural strength of the battery case while ensuring light weight. The battery box body comprises a frame and a structural beam arranged in the frame at intervals, and the structural beam is used for increasing the structural strength of the frame. Generally, a battery module is disposed on two opposite sides of the structural beam, and the side wall of the battery module contacts with the outer side wall of the structural beam. However, at the end of the service life of the battery module, the middle of the side wall of the battery module expands outwards to form a protrusion, so that the side wall of the battery module acts on the outer side wall of the structural beam. Therefore, the problem that the structural beam of the battery box body improves the mechanical strength of the structural beam on the premise of meeting the deformation requirement of the battery module on expansion deformation needs to be solved urgently.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a battery box, the structural beam who aims at solving battery box improves self mechanical strength's problem under the deformation requirement prerequisite that satisfies battery module expansion deformation.
In order to achieve the above object, the utility model adopts the following technical scheme: a battery box body comprises a lower box body and a plurality of structural beams arranged in the lower box body at intervals, wherein each structural beam is provided with a lower end part close to the bottom end part of the lower box body and an upper end part opposite to the lower end part; in the height direction of the structural beam, the variation tendency of the thickness of the lower end portion to the thickness of the upper end portion is first reduced and then increased.
The utility model has the advantages that: the utility model provides a battery box, in the thickness direction, the upper end of each structure roof beam and the thickness of tip down all are greater than the thickness at structure roof beam middle part for the middle part of structure roof beam is the structure of indent, and like this, battery module has been satisfied at life's final stage, and the required space requirement of outside bulging deformation in its middle part, and simultaneously, the upper end of structure roof beam and the tip down can keep the required thickness requirement of sufficient installation intensity, and like this, after the processing in the compromise, the mechanical strength of structure roof beam does not have obvious decline.
In one embodiment, the cross-section of each structural beam in the thickness direction is in an "i" shape or an "]" shape.
By adopting the technical scheme, particularly, the structural beam with the I-shaped or J-shaped cross section is utilized, and the mechanical strength of the structural beam is not obviously reduced on the premise of meeting the deformation requirement of the expansion deformation of the battery module.
In one embodiment, the battery case includes a plurality of adapters, and opposite end sides of the structural beam are connected to inner sidewalls of the lower case through the corresponding adapters.
Through adopting above-mentioned technical scheme, each structure roof beam is connected in the inside wall of box down through corresponding the adaptor to increase the area of contact between structure roof beam and the lower box, improve the connection stability between the two promptly.
In one embodiment, the adaptor comprises a base plate and a plurality of limiting plates arranged on the base plate at intervals, and the structural beam is provided with a slot matched with the corresponding limiting plate.
Through adopting above-mentioned technical scheme, specifically, connect the base plate of adaptor in the inside wall of box down, and the limiting plate inserts and locates to be connected with the structure roof beam in the fluting that corresponds.
In one embodiment, the battery box body further comprises a limiting structure, and the base plate is connected to the inner side wall of the lower box body through the limiting structure.
Through adopting above-mentioned technical scheme, utilize limit structure further to improve the joint strength between the inside wall of base plate and lower box.
In one embodiment, the limiting structure is a transverse groove formed on the inner side wall of the lower box body, and the substrate is transversely and slidably inserted into the transverse groove.
Through adopting above-mentioned technical scheme, utilize horizontal recess to carry on spacingly to the base plate, increase the stress point between the inside wall of base plate and lower box, improve the connection stability of the two.
In one embodiment, the limiting structure is a longitudinal groove formed on the inner side wall of the lower box body, and the substrate is longitudinally and slidably inserted into the longitudinal groove.
Through adopting above-mentioned technical scheme, utilize vertical recess to carry on spacingly to the base plate, increase the stress point between the inside wall of base plate and lower box, improve the connection stability of the two.
In one embodiment, the limiting structure comprises a limiting hole formed in the inner side wall of the lower box body and a limiting post arranged on the substrate, and the limiting post is inserted into the corresponding limiting hole.
Through adopting above-mentioned technical scheme, utilize spacing post and the spacing looks adaptation that corresponds to realize spacing the base plate, increase the stress point between the inside wall of base plate and lower box, improve the connection stability of the two.
The application also provides a battery pack which comprises the battery box body.
The utility model has the advantages that: the utility model provides a battery pack, on the basis that has above-mentioned battery box, the overall structure stability of this battery pack is higher.
The application also provides a vehicle, which comprises the battery pack.
The utility model has the advantages that: the utility model provides a vehicle, on the basis that has above-mentioned battery package, on the basis that does not reduce continuation of the journey mileage, the fail safe nature of this vehicle is higher.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a cross-sectional view of a battery case provided in an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a battery box provided in an embodiment of the present invention;
fig. 3 is an exploded view of a battery case according to an embodiment of the present invention;
fig. 4 is an exploded view of a battery case according to another embodiment of the present invention;
fig. 5 is a cross-sectional view of a battery case according to another embodiment of the present invention.
Wherein, in the figures, the respective reference numerals:
the battery box body 100, the lower box body 10, the structural beam 20, the lower end part 20a, the upper end part 20b, the adapter 30, the substrate 31, the limit plate 32, the open groove 20c, the limit structure 40, the limit hole 41 and the limit column 42.
Detailed Description
Reference will now be made in detail to the 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 functions throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Referring to fig. 1, a battery box 100 of the present application includes a lower box 10 and a plurality of structural beams 20 disposed at intervals in the lower box 10, each structural beam 20 having a lower end 20a close to a bottom end of the lower box 10 and an upper end 20b opposite to the lower end 20 a; the thickness of the lower end portion 20a changes to the thickness of the upper end portion 20b in the height direction of the structural beam 20 in a manner that the thickness decreases first and then increases. It is understood that the thickness of the middle portion of the structural member 20 is smaller than the thickness of the upper end portion 20b and the thickness of the lower end portion 20a, as viewed in a transverse section of the structural member 20, leaving room for the expansion deformation of the middle portion of the battery module, while also securing the mechanical strength of the structural member 20. And, the structural beam 20 may be a cross beam disposed transversely within the lower box or a longitudinal beam disposed longitudinally within the lower box.
The utility model provides a battery box 100, in the thickness direction, the upper end 20b of each structure roof beam 20 and the thickness of tip 20a down all are greater than the thickness at structure roof beam 20 middle part, make the middle part of structure roof beam 20 be the structure of indent, thus, the battery module has been satisfied at last stage of life, the required space requirement of outside bulging deformation in its middle part, and simultaneously, the upper end 20b of structure roof beam 20 and tip 20a down can keep the required thickness requirement of sufficient installation intensity, thus, compromise the back of handling, the mechanical strength of structure roof beam 20 does not have obvious decline.
Referring to fig. 1, in particular, in one embodiment, each structural beam 20 has an i-shaped or a' ] -shaped cross-section in the thickness direction. It can be understood that the structural beam 20 with the cross section in the shape of the I or J is easier to process, and the mechanical strength of the structural beam is not obviously reduced on the premise of meeting the deformation requirement of the expansion deformation of the battery module.
Referring to fig. 2, in one embodiment, the battery case 100 includes a plurality of adapters 30, and opposite end sides of the structural beam 20 are connected to inner sidewalls of the lower case 10 through the corresponding adapters 30. It can be understood that the difficulty of welding the end side of the structural beam 20 to the inner sidewall of the lower case 10 increases after the above process, and therefore, an additional adaptor 30 is needed to increase the contact area between the structural beam 20 and the lower case 10, that is, the structural beam 20 is welded to the adaptor 30 first, and then the adaptor 30 is welded to the inner sidewall of the lower case 10, so as to improve the connection stability between the two.
Referring to fig. 3, specifically, the adaptor 30 includes a substrate 31 and a plurality of limiting plates 32 disposed on the substrate 31 at intervals, for example, two limiting plates 32 are disposed on the substrate at intervals, although the number of the limiting plates 32 may be increased according to actual requirements. The structural beam 20 is provided with a slot 20c matched with the corresponding limit plate 32. It can be understood that the base plate 31 of the adaptor 30 is welded to the inner side wall of the lower case 10, and the limit plate 32 is inserted into the corresponding slot 20c to achieve connection with the structural beam 20. Here, the edge of the base plate 31 is a welding position with the lower case 10, and the edge of the stopper plate 32 is a welding position with the groove wall of the groove 20 c.
Referring to fig. 3 to 5, in an embodiment, the battery box 100 further includes a limiting structure 40, and the substrate 31 is connected to an inner sidewall of the lower box 10 through the limiting structure 40. It can be understood that, after the adaptor 30 is added, the problem of stress concentration also exists at the welding position of the adaptor 30 and the lower box 10, and therefore, the limiting structure 40 is required to increase the position of the additional acting force between the substrate 31 and the lower box 10, that is, to increase the connection strength between the substrate 31 and the lower box 10, so as to reduce the probability of stress concentration at the welding position.
Referring to fig. 3, in one embodiment, the position-limiting structure 40 is a transverse groove formed on the inner sidewall of the lower housing 10, and the substrate 31 is transversely and slidably inserted into the transverse groove. It can be understood that, the groove wall of the transverse groove is used for limiting and fixing the substrate 31, that is, the two opposite sides of the substrate 31 are limited, so as to increase the stress points between the substrate 31 and the inner side wall of the lower box 10, further improve the connection stability of the substrate 31 and the inner side wall, and reduce the probability of stress concentration at the welding position.
Referring to fig. 4, in another embodiment, the limiting structure 40 is a longitudinal groove formed on the inner sidewall of the lower case 10, and the substrate 31 is longitudinally slidably inserted into the longitudinal groove. Similarly, the groove walls of the longitudinal grooves are utilized to limit and fix the substrate 31, namely, the two opposite sides of the substrate 31 are limited, so that stress points between the substrate 31 and the inner side wall of the lower box 10 are increased, the connection stability of the substrate 31 and the inner side wall of the lower box is further improved, and the probability of stress concentration at the welding position is reduced.
Referring to fig. 5, in another embodiment, the position-limiting structure 40 includes position-limiting holes 41 formed on the inner sidewall of the lower case 10 and position-limiting posts 42 disposed on the substrate 31, and the position-limiting posts 42 are inserted into the corresponding position-limiting holes 41. It can be understood that the limiting column 42 is adapted to the corresponding limiting hole 41 to limit the substrate 31, so as to increase the stress point between the substrate 31 and the inner sidewall of the lower box 10 and improve the connection stability of the two.
The present application further provides a battery pack including the battery case 100 described above.
The utility model provides a battery pack, on the basis that has above-mentioned battery box 100, the overall structure stability of this battery pack is higher.
The application also provides a vehicle, which comprises the battery pack.
The utility model provides a vehicle, on the basis that has above-mentioned battery package, on the basis that does not reduce continuation of the journey mileage, the fail safe nature of this vehicle is higher.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The utility model provides a battery box, includes box and interval ground locate a plurality of structure roof beams in the box down, its characterized in that: each structural beam is provided with a lower end part close to the bottom end part of the lower box body and an upper end part opposite to the lower end part; in the structural beam height direction, the trend of the change from the thickness of the lower end portion to the thickness of the upper end portion is first reduced and then increased.
2. The battery case according to claim 1, characterized in that: the cross section of each structural beam along the thickness direction is I-shaped or I-shaped.
3. The battery case according to claim 1, characterized in that: the battery box body comprises a plurality of adapters, and the opposite two end sides of the structural beam are connected to the inner side wall of the lower box body through the corresponding adapters.
4. The battery case of claim 3, wherein: the adapter comprises a base plate and a plurality of limiting plates arranged on the base plate at intervals, and the structural beam is provided with a groove matched with the corresponding limiting plate.
5. The battery case according to claim 4, characterized in that: the battery box body further comprises a limiting structure, and the base plate is connected to the inner side wall of the lower box body through the limiting structure.
6. The battery case according to claim 5, characterized in that: the limiting structure is a transverse groove formed in the inner side wall of the lower box body, and the substrate is transversely inserted into the transverse groove in a sliding mode.
7. The battery case according to claim 5, characterized in that: the limiting structure is a longitudinal groove formed in the inner side wall of the lower box body, and the substrate is longitudinally and slidably inserted into the longitudinal groove.
8. The battery case according to claim 5, characterized in that: the limiting structure comprises a limiting hole formed in the inner side wall of the lower box body and a limiting post arranged on the substrate, and the limiting post is inserted in the corresponding limiting hole.
9. A battery pack, comprising: comprising a battery case according to any one of claims 1 to 8.
10. A vehicle, characterized in that: comprising the battery pack according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021693433.7U CN213042998U (en) | 2020-08-12 | 2020-08-12 | Battery box, battery package and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021693433.7U CN213042998U (en) | 2020-08-12 | 2020-08-12 | Battery box, battery package and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213042998U true CN213042998U (en) | 2021-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021693433.7U Active CN213042998U (en) | 2020-08-12 | 2020-08-12 | Battery box, battery package and vehicle |
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| Country | Link |
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| CN (1) | CN213042998U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023174303A1 (en) * | 2022-03-14 | 2023-09-21 | 比亚迪股份有限公司 | Tray assembly, power battery pack, and vehicle |
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2020
- 2020-08-12 CN CN202021693433.7U patent/CN213042998U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023174303A1 (en) * | 2022-03-14 | 2023-09-21 | 比亚迪股份有限公司 | Tray assembly, power battery pack, and vehicle |
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