CN113782884A - Battery pack box and battery pack - Google Patents
Battery pack box and battery pack Download PDFInfo
- Publication number
- CN113782884A CN113782884A CN202111088783.XA CN202111088783A CN113782884A CN 113782884 A CN113782884 A CN 113782884A CN 202111088783 A CN202111088783 A CN 202111088783A CN 113782884 A CN113782884 A CN 113782884A
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- Prior art keywords
- plate
- battery pack
- bottom plate
- transverse
- transverse plate
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
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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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention discloses a battery pack box and a battery pack, and relates to the field of batteries. The battery pack box comprises a lower box body and a cover plate, wherein the lower box body is connected with the cover plate and jointly forms an accommodating cavity for accommodating a battery; the lower box body comprises side plates and a bottom plate, the side plates comprise a first vertical plate and a first transverse plate which are integrally formed, the first vertical plate and the first transverse plate mutually form an included angle, one side of the first transverse plate, far away from the first vertical plate, is welded with the bottom plate, and the first transverse plate and the bottom plate are located in the same plane. The battery pack box body provided by the invention can reduce the welding difficulty and obviously improve the structural strength.
Description
Technical Field
The invention relates to the field of batteries, in particular to a battery pack box body and a battery pack.
Background
The battery pack case generally includes an upper cover, front and rear end plates, left and right side plates, and a bottom plate for accommodating batteries.
At present, when a battery pack box body on the market is assembled, a side plate and a bottom plate are often connected in a welding mode. Because the curb plate is the riser, and the bottom plate is the diaphragm, there is 90 turnings in the welding position of curb plate and riser, and the welding degree of difficulty is big to structural strength after the welding is accomplished is relatively poor.
Disclosure of Invention
The invention aims to provide a battery pack box body which can reduce welding difficulty and remarkably improve structural strength.
Another object of the present invention is to provide a battery pack, which can reduce the welding difficulty and significantly improve the structural strength.
The invention provides a technical scheme that:
a battery pack box comprises a lower box body and a cover plate, wherein the lower box body is connected with the cover plate and jointly forms an accommodating cavity for accommodating a battery;
the lower box body comprises side plates and a bottom plate, the side plates comprise a first vertical plate and a first transverse plate which are integrally formed, the first vertical plate and the first transverse plate are mutually included angles, the first transverse plate is far away from one side of the first vertical plate and welded with the bottom plate, and the first transverse plate and the bottom plate are located in the same plane.
Further, heat management runners are arranged inside the first transverse plate and inside the bottom plate, and the cold flow channel is used for heat management fluid to flow, so that the first transverse plate and the bottom plate can conduct heat management on the battery contained in the containing cavity.
Furthermore, the quantity of curb plate is two, the bottom plate is the rectangle, the box still includes two end plates down, two the curb plate is respective first diaphragm respectively with the both sides welding that the bottom plate is relative, two the end plate respectively with the both ends that the bottom plate is relative are connected.
Further, the end plate includes integrated into one piece's second riser and second diaphragm, the second riser with the second diaphragm is the contained angle each other, the second diaphragm is kept away from one side of second riser with the bottom plate reaches first diaphragm welding, just the second diaphragm with the bottom plate reaches first diaphragm is in the coplanar.
Furthermore, one of the second transverse plate and the bottom plate is provided with a tenon, the other of the second transverse plate and the bottom plate is provided with a mortise, and the tenon is inserted into the mortise.
Further, the length of first diaphragm is less than the length of first riser, the both ends of first riser with the both ends of first diaphragm form two installation gaps respectively, two of end plate the second diaphragm imbeds two respectively in the installation gap.
Further, the second riser with the length of second diaphragm is the same, the second riser with the end wall at the both ends of second diaphragm and two the laminating of first riser and welding of curb plate.
Further, be provided with feed liquor chamber and play liquid chamber in the second diaphragm respectively, the feed liquor chamber with go out the liquid chamber all with the bottom plate reaches the inside intercommunication of first diaphragm, the second riser is kept away from the one side of bottom plate has been seted up the liquid inlet joint and has been gone out the liquid joint, the liquid inlet joint with feed liquor chamber intercommunication, go out the liquid joint with go out the liquid chamber intercommunication.
Furthermore, heat management runners are arranged inside the first transverse plate and inside the bottom plate, and the heat management runners are communicated with the liquid inlet cavity and the liquid outlet cavity.
The invention also provides a battery pack, which comprises a battery and the battery pack box body, wherein the battery pack box body comprises a lower box body and a cover plate, and the lower box body is connected with the cover plate and jointly encloses an accommodating cavity; the lower box body comprises a side plate and a bottom plate, the side plate comprises a first vertical plate and a first transverse plate which are integrally formed, the first vertical plate and the first transverse plate mutually form an included angle, one side, far away from the first vertical plate, of the first transverse plate is welded with the bottom plate, the first transverse plate and the bottom plate are located in the same plane, and the battery is contained in the containing cavity.
Compared with the prior art, the side plate of the lower box body of the battery pack box body provided by the invention comprises the first vertical plate and the first transverse plate which are integrally formed, the first vertical plate and the first transverse plate form an included angle with each other, and one side of the first transverse plate, which is far away from the first vertical plate, and the bottom plate are in butt welding in the same plane. Compared with the prior art that the welding position of the bottom plate and the side plate has a large corner, the bottom plate and the side plate are butt-welded in the same plane, the welding difficulty is lower, and the strength is higher. Therefore, the beneficial effects of the battery pack box provided by the invention comprise that: the welding difficulty can be reduced, and the structural strength can be obviously improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly described below. It is appreciated that the following drawings depict only certain embodiments of the invention and are therefore not to be considered limiting of its scope. For a person skilled in the art, it is possible to derive other relevant figures from these figures without inventive effort.
Fig. 1 is a schematic structural diagram of a battery pack case according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of the lower box of FIG. 1;
fig. 3 is an exploded view of fig. 2.
Icon: 100-battery pack case; 110-a lower box body; 111-side plates; 1111-a first riser; 1112-mounting notches; 1113-a first transverse plate; 113-a backplane; 115-an end plate; 1151-a second riser; 1152-liquid inlet joint; 1153-a second cross plate; 1154-liquid outlet joint; 130-cover plate.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "inside", "outside", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or the orientations or positional relationships that the products of the present invention are conventionally placed in use, or the orientations or positional relationships that are conventionally understood by those skilled in the art, and are used for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is also to be noted that, unless otherwise explicitly stated or limited, the terms "disposed" and "connected" are to be interpreted broadly, and for example, "connected" may be a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; the connection may be direct or indirect via an intermediate medium, and may be a communication between the two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The following detailed description of embodiments of the invention refers to the accompanying drawings.
First embodiment
Referring to fig. 1, fig. 1 is a schematic structural diagram of a battery pack case 100 according to the present embodiment.
The battery pack box 100 provided by the embodiment is used for accommodating and mounting batteries and has the characteristics of lower welding difficulty and higher structural strength.
The battery pack case 100 provided in this embodiment includes a lower case 110 and a cover plate 130, wherein the lower case 110 is connected to the cover plate 130, and the lower case 110 and the cover plate 130 jointly enclose an accommodating cavity for accommodating a battery.
Referring to fig. 2 and 3, fig. 2 is a schematic structural diagram of the lower case 110, and fig. 3 is an exploded schematic diagram of the lower case 110.
The lower box body 110 includes side plates 111, a bottom plate 113 and end plates 115, in this embodiment, the lower box body 110 is rectangular, the number of the side plates 111 and the number of the end plates 115 are two, the two side plates 111 are oppositely disposed on two opposite sides of the bottom plate 113, the two end plates 115 are oppositely disposed on two opposite ends of the bottom plate 113, and jointly enclose a rectangular basin with an open top for placing a battery, and the cover plate 130 is used for covering the rectangular basin.
The curb plate 111 includes integrated into one piece's first riser 1111 and first diaphragm 1113, and one side of first diaphragm 1113 is connected with the bottom side of first riser 1111, and first riser 1111 and first diaphragm 1113 each other are the contained angle, and in this embodiment, first riser 1111 is perpendicular with first diaphragm 1113, promptly, the cross-section of curb plate 111 is L shape. In other embodiments, the first vertical plate 1111 and the first horizontal plate 1113 may be adjusted to have other included angles according to practical application conditions.
The two side plates 111 are disposed oppositely, that is, the first vertical plates 1111 of the two side plates 111 are parallel to each other, and the first horizontal plates 1113 are close to each other and connected to two opposite sides of the bottom plate 113 in the same plane. In practical application, when the base plate 113 is normally placed, the base plate 113 extends in a horizontal plane, that is, the first transverse plate 1113 is butt-welded to the base plate 113 in the horizontal plane, and the first vertical plate 1111 is in a vertical plane.
It can be understood that, the butt welding of the side plate 111 and the bottom plate 113 in the same plane in this embodiment, compared with the two included angle welding in the existing box body, the welding difficulty is lower, and the welding seam position changes, leaves the corner position of stress concentration, so that the welding of the side plate 111 and the bottom plate 113 is firmer, and further the overall structural strength of the battery pack box body 100 is remarkably improved.
Similarly, in order to further increase the structural strength of the battery pack case 100, the end plate 115 is also formed in an L-shaped structure in the present embodiment. That is, the end plate 115 includes a second vertical plate 1151 and a second transverse plate 1153 which are integrally formed, the bottom side of the second vertical plate 1151 is connected to one side of the second transverse plate 1153, and the second vertical plate 1151 is perpendicular to the second transverse plate 1153.
The side of second transverse plate 1153 remote from second vertical plate 1151 is butt-welded to the end surfaces of base plate 113 and first transverse plate 1113, i.e., second transverse plate 1153 is in the same plane as base plate 113 and first transverse plate 1113, and when base plate 113 is parallel to the horizontal plane, second vertical plate 1151 also extends in the vertical direction.
It can be seen that the end plate 115 and the bottom plate 113 are also butt-welded in the same plane, and compared with the existing case body in which the two are welded at an included angle, the welding difficulty is reduced, and the position of the welding line is separated from the corner position where the stress is concentrated, so that the end plate 115 and the bottom plate 113 are welded more firmly, and the structural strength of the battery pack case body 100 is further improved.
The terminal surface of the second riser 1151 of end plate 115 and the first riser 1111 laminating and the welding of curb plate 111, on this basis, second diaphragm 1153 and first diaphragm 1113 butt joint for end plate 115 is more firm with being connected of curb plate 111, and then makes the structural strength of battery package box 100 obtain promoting.
In this embodiment, in order to ensure smooth docking between second transverse plate 1153 and first transverse plate 1113 and bottom plate 113, the length of first transverse plate 1113 is smaller than the length of first vertical plate 1111, two ends of first vertical plate 1111 and two ends of first transverse plate 1113 form two mounting notches 1112, and two second transverse plates 1153 of two end plates 115 are embedded into two mounting notches 1112 respectively.
It can be understood that, through the preset dimension, it is ensured that the width dimension of the installation notch 1112 is equal to the sum of the width dimension of the second transverse plate 1153 and the thickness dimension of the second vertical plate 1151, and it can be ensured that when the second transverse plate 1153 is embedded into the installation notch 1112 and is butted with the end face of the first transverse plate 1113, the side of the second transverse plate 1151 far away from the second transverse plate 1153 is aligned with the end face of the first vertical plate 1111, so as to ensure that the lower box body 110 has a compact structure and a flat and beautiful appearance.
Moreover, the end surface of the second vertical plate 1151 of the end plate 115 is attached to and welded to the first vertical plate 1111 of the side plate 111, the second vertical plate 1151 and the second horizontal plate 1153 are the same in length, one side of the second horizontal plate 1153, which is far away from the second vertical plate 1151, is in butt welding with the bottom plate 113 and the first horizontal plate 1113, and meanwhile, the end surface of the second horizontal plate 1153 is also attached to and welded to the first vertical plate 1111, so that the structural integrity of the lower box body 110 is guaranteed, and the structural strength of the lower box body 110 is further improved.
In order to realize quick positioning and further improve the assembly efficiency of the lower box body 110, in this embodiment, a tenon is convexly arranged on one side of the second transverse plate 1153, which is far away from the second vertical plate 1151, and a mortise is concavely arranged on the end surface of the bottom plate 113 and is inserted into the mortise.
When the lower box 110 is assembled, the tenon of the second horizontal plate 1153 is inserted into the tenon of the bottom plate 113, so that the positioning between the end plate 115 and the bottom plate 113 can be completed quickly, and then the second horizontal plate 1153 and the bottom plate 113 are butt-welded. After the two end plates 115 are sequentially connected to the bottom plate 113, the first horizontal plates 1113 of the two side plates 111 are respectively embedded into the notches formed by the two opposite sides of the bottom plate 113 and the two second horizontal plates 1153, so that the second horizontal plates 1153 are embedded into the installation notches 1112. The angle of side plate 111 is adjusted so that first transverse plate 1113, second transverse plate 1153 and bottom plate 113 are coplanar, and then the butt joint of first transverse plate 1113, second transverse plate 1153 and bottom plate 113 is completed, and then the welding of first transverse plate 1113 and bottom plate 113 is completed, and the welding of first transverse plate 1113 and second transverse plate 1153, and the welding of second transverse plate 1153 and second vertical plate 1151 with first vertical plate 1111 respectively is completed.
In addition, in consideration of the fact that the heat management plate needs to be stacked on the bottom plate 113 in the existing box body, which increases the weight of the lower box body 110 and reduces the space of the accommodating cavity, in this embodiment, heat management flow channels are respectively arranged inside the first horizontal plate 1113 and inside the bottom plate 113, and the heat management flow channels are used for heat supply management fluid to flow, so that the first horizontal plate 1113 and the bottom plate 113 perform heat management on the battery accommodated in the accommodating cavity.
That is, first diaphragm 1113 and bottom plate 113 possess the heat management function, avoid additionally adding the heat management board, save manufacturing cost and reduce overall quality, promote the usable space in holding chamber.
Moreover, a liquid inlet cavity and a liquid outlet cavity are respectively arranged in the second transverse plate 1153, and both the liquid inlet cavity and the liquid outlet cavity are communicated with the bottom plate 113 and the interior of the first transverse plate 1113, namely communicated with the heat management flow channels respectively arranged in the bottom plate 113 and the first transverse plate 1113. One side of the second vertical plate 1151, which is far away from the bottom plate 113, is provided with a liquid inlet joint 1152 and a liquid outlet joint 1154, the liquid inlet joint 1152 is communicated with the liquid inlet cavity, and the liquid outlet joint 1154 is communicated with the liquid outlet cavity.
In practical application, an external heat management fluid is introduced into a liquid inlet cavity in the second transverse plate 1153 through the liquid inlet connector 1152, and flows into one end of each heat management flow channel of the first transverse plate 1113 and the bottom plate 113 through the liquid inlet cavity, the heat management fluid flows into a liquid outlet cavity in the second transverse plate 1153 after the heat management flow channels of the bottom plate 113 or the first transverse plate 1113 complete circulation, and is led out to the outside through the liquid outlet connector 1154, and continuous heat management of the battery is realized through the circulation of the heat management fluid.
To sum up, the battery pack box 100 that this embodiment provided, the welding degree of difficulty is lower, and structural strength is higher to, remove from additionally setting up thermal management board, practice thrift manufacturing cost, and reduced whole weight.
Second embodiment
The present embodiment provides a battery pack, which includes a battery and the battery pack case 100 provided in the first embodiment, wherein the battery is accommodated in the accommodating cavity of the battery pack case 100.
The battery package that this embodiment provided has that the welding degree of difficulty is lower, structural strength is higher, manufacturing cost and whole weight are lower characteristics, more do benefit to marketing.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The battery pack box body is characterized by comprising a lower box body and a cover plate, wherein the lower box body is connected with the cover plate and jointly forms an accommodating cavity for accommodating a battery;
the lower box body comprises side plates and a bottom plate, the side plates comprise a first vertical plate and a first transverse plate which are integrally formed, the first vertical plate and the first transverse plate are mutually included angles, the first transverse plate is far away from one side of the first vertical plate and welded with the bottom plate, and the first transverse plate and the bottom plate are located in the same plane.
2. The battery pack box body of claim 1, wherein thermal management runners are arranged in the first transverse plate and the bottom plate, and the thermal management runners are used for flowing of thermal management fluid, so that the first transverse plate and the bottom plate thermally manage the battery accommodated in the accommodating cavity.
3. The battery pack box of claim 1, wherein the number of the side plates is two, the bottom plate is rectangular, the lower box further comprises two end plates, the first transverse plates of the two side plates are respectively welded to two opposite sides of the bottom plate, and the two end plates are respectively connected to two opposite ends of the bottom plate.
4. The battery pack box of claim 3, wherein the end plate comprises a second vertical plate and a second transverse plate which are integrally formed, the second vertical plate and the second transverse plate mutually form an included angle, one side of the second transverse plate, which is far away from the second vertical plate, is welded with the bottom plate and the first transverse plate, and the second transverse plate is in the same plane with the bottom plate and the first transverse plate.
5. The battery pack box of claim 4, wherein one of the second transverse plate and the bottom plate is provided with a tenon, and the other of the second transverse plate and the bottom plate is provided with a mortise, and the tenon is inserted into the mortise.
6. The battery pack box of claim 4, wherein the length of the first transverse plate is smaller than the length of the first vertical plate, two installation notches are formed at two ends of the first vertical plate and two ends of the first transverse plate respectively, and the two second transverse plates of the two end plates are embedded into the two installation notches respectively.
7. The battery pack case of claim 4, wherein the second vertical plate is the same as the second transverse plate in length, and the end walls at the two ends of the second vertical plate and the second transverse plate are attached to and welded to the two first vertical plates of the two side plates.
8. The battery pack box of claim 4, wherein the second plate is provided with a liquid inlet cavity and a liquid outlet cavity, the liquid inlet cavity and the liquid outlet cavity are both communicated with the bottom plate and the interior of the first horizontal plate, one side of the second vertical plate, which is far away from the bottom plate, is provided with a liquid inlet joint and a liquid outlet joint, the liquid inlet joint is communicated with the liquid inlet cavity, and the liquid outlet joint is communicated with the liquid outlet cavity.
9. The battery pack box of claim 8, wherein thermal management runners are arranged in the first transverse plate and the bottom plate, and the thermal management runners arranged in the first transverse plate and the bottom plate are communicated with the liquid inlet cavity and the liquid outlet cavity.
10. A battery pack comprising a battery and a battery pack case as claimed in any one of claims 1 to 9, said battery being received in said receiving cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111088783.XA CN113782884A (en) | 2021-09-16 | 2021-09-16 | Battery pack box and battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111088783.XA CN113782884A (en) | 2021-09-16 | 2021-09-16 | Battery pack box and battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113782884A true CN113782884A (en) | 2021-12-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111088783.XA Pending CN113782884A (en) | 2021-09-16 | 2021-09-16 | Battery pack box and battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113782884A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102021127652A1 (en) | 2021-10-25 | 2023-04-27 | Bayerische Motoren Werke Aktiengesellschaft | Housing part and housing for an energy store |
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| DE102021127652A1 (en) | 2021-10-25 | 2023-04-27 | Bayerische Motoren Werke Aktiengesellschaft | Housing part and housing for an energy store |
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Application publication date: 20211210 |
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