CN117175106A - Lower shell, lower box and heat preservation battery package of battery package - Google Patents
Lower shell, lower box and heat preservation battery package of battery package Download PDFInfo
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- CN117175106A CN117175106A CN202211733183.9A CN202211733183A CN117175106A CN 117175106 A CN117175106 A CN 117175106A CN 202211733183 A CN202211733183 A CN 202211733183A CN 117175106 A CN117175106 A CN 117175106A
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- lower case
- battery pack
- lower shell
- side wall
- reinforcing
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- 238000004321 preservation Methods 0.000 title abstract description 25
- 230000003014 reinforcing effect Effects 0.000 claims description 95
- 230000002787 reinforcement Effects 0.000 claims description 32
- 238000007789 sealing Methods 0.000 claims description 31
- 238000009413 insulation Methods 0.000 claims description 20
- 239000002131 composite material Substances 0.000 claims description 9
- 239000002905 metal composite material Substances 0.000 claims description 8
- 229910052755 nonmetal Inorganic materials 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 description 17
- 239000000805 composite resin Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- 238000005728 strengthening Methods 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 4
- 239000011521 glass Substances 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000004964 aerogel Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
Classifications
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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
- H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
- H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
- H01M50/231—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks having a layered structure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/615—Heating or keeping warm
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
-
- 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
- H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
- H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
- H01M50/227—Organic material
-
- 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
- H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
-
- 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
- H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/14—Mounting supporting structure in casing or on frame or rack
-
- 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)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Aviation & Aerospace Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Battery Mounting, Suspending (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The application discloses a lower shell of a battery pack, a lower box body and a heat-preservation battery pack. The lower box of the battery pack comprises a lower shell and a lower shell of the battery pack. The heat-preservation battery pack comprises a lower shell of the battery pack and also comprises an upper cover or an upper cover matched with the lower shell of the battery pack; or the heat-preservation battery pack comprises a lower box body of the battery pack and an upper cover matched with the lower box body of the battery pack.
Description
The present application claims priority from chinese patent application CN2022106257362, whose application date is 2022, 6 and 2. The present application incorporates the entirety of the above-mentioned chinese patent application.
Technical Field
The application relates to the technical field of power conversion, in particular to a lower shell, a lower box and a heat-preservation battery pack, which are applied to a battery pack.
Background
The energy source of an electric vehicle is typically provided by a battery pack mounted on the electric vehicle, which typically includes a battery compartment housing a plurality of electrical cells for storing electrical energy. When electric automobile uses in low temperature region, external low temperature will be conducted to the battery case inside through the battery case for the inside temperature of battery case is too low and leads to the unable normal work of battery, so will influence electric automobile's use, causes the inconvenient use and produces the potential safety hazard even, therefore the battery case needs to have heat preservation ability.
The inventor knows that in the technical schemes of some heat preservation battery packs at present, the following technical problems exist:
(1) When the lower shell structure of the battery box is made of metal materials, the heat preservation effect is poor, and the improvement of the structural strength and the lightweight design of the battery box are a pair of technical contradictions which are difficult to solve; when the thickness of the lower case is increased to increase structural strength, the weight of the battery case may cause the overall weight of the electric vehicle to be excessively large.
(2) When the battery box adopts some nonmetallic materials, the structural strength of the side wall of the lower shell is difficult to ensure, and the condition that the structural strength of the side wall of the lower shell is insufficient and the internal battery core cannot be effectively protected easily occurs.
Disclosure of Invention
The application aims to solve the technical problem that when a nonmetallic material is adopted as a lower shell of a battery pack in the prior art, the lower shell, the lower box and the side wall structure of the battery pack are not enough in strength, so that the battery pack is damaged.
The application solves the technical problems by the following technical scheme:
a lower shell of a battery pack is made of a nonmetallic composite material and comprises a lower shell body and a lower shell side wall reinforcing structure arranged outside the edge of the lower shell body.
The non-metal composite material is adopted in the scheme, and compared with the metal material, the non-metal composite material can reduce weight and ensure that the lower shell of the battery pack has certain structural strength. Under the condition of adopting nonmetallic composite materials, this scheme sets up inferior valve lateral wall additional strengthening in the edge outside of inferior valve body, and this inferior valve lateral wall additional strengthening can further strengthen the structural strength of inferior valve, avoids whole battery package to damage because of inferior valve lateral wall structural strength is not enough.
Further, the lower case side wall reinforcing structure includes a plurality of lower case reinforcing risers extending outwardly in a side wall direction perpendicular to the lower case body, and lower case reinforcing cross plates respectively connecting distal ends of the respective lower case reinforcing risers.
In the scheme, a plurality of lower shell reinforcing vertical plates extend outwards perpendicular to the side wall direction of a lower shell body, and corresponding lower shell reinforcing transverse plates are respectively connected with the distal ends of the lower shell reinforcing vertical plates; in this kind of setting mode, a plurality of inferior valve strengthen riser and the inferior valve that is connected strengthen the diaphragm and can make up and form hollow additional strengthening, under the circumstances that guarantees inferior valve structure and strengthen, can not increase the weight of inferior valve by a wide margin.
Further, a plurality of lower shell reinforcing transverse plates are arranged at intervals, and each lower shell reinforcing transverse plate is connected with each lower shell reinforcing vertical plate respectively.
The lower shell reinforcing transverse plates in the scheme are arranged at intervals, the arrangement mode enables every two lower shell reinforcing vertical plates to be combined with the corresponding lower shell reinforcing transverse plates to form a relatively independent hollow reinforcing mechanism, and the weight increment of the lower shell is further reduced under the condition of ensuring the reinforcing of the lower shell structure.
Further, the lower shell reinforcing transverse plates are mutually parallel; and/or each lower shell reinforcing transverse plate is parallel to the side wall of the lower shell body, and/or each lower shell reinforcing vertical plate of the lower shell side wall reinforcing structure positioned on the same side of the lower shell body is parallel to each other; and/or the lower shell reinforcing cross plates are perpendicular to each lower shell reinforcing riser. The arrangement mode is convenient for enabling each lower shell reinforcing transverse plate to be convenient for uniform molding and manufacturing, and reducing manufacturing difficulty; meanwhile, the plurality of lower shell reinforcing transverse plates and the lower shell reinforcing vertical plates are stressed together, so that the structural strength is improved.
Further, the lower shell side wall reinforcing structure further comprises a plurality of vertical rib plates arranged on the outer side wall of the lower shell body, and the plurality of vertical rib plates are arranged at intervals along the circumferential direction of the outer side wall of the lower shell body and are connected with the lower shell reinforcing vertical plates.
In the scheme, a plurality of vertical rib plates are arranged at intervals along the circumferential direction of the outer side wall of the lower shell, and are connected with the lower shell reinforcing vertical plate, so that the structural strength of the lower shell is further improved.
Further, the battery pack is arranged in the outer container to form a battery pack assembly, and the lower shell side wall reinforcing structure is used for being connected with a battery pack fixing support of the outer container.
In the scheme, the battery pack fixing support of the outer liner is connected with the lower shell side wall reinforcing structure, and the arrangement mode increases the utilization rate of the lower shell side wall reinforcing structure.
Further, the lower shell sidewall reinforcement structure has a flange face extending horizontally outwardly:
the flange surface is provided with a lower shell mounting hole extending downwards, the lower shell mounting hole is used for connecting a connecting piece to fix the lower shell, and the lower shell mounting hole is connected with the side wall of the lower shell body through reinforcing ribs arranged at intervals; or the flange surface can be pressed and fixed by the battery pack fixing bracket of the outer container.
In this scheme set up the inferior valve mounting hole on the flange face to when utilizing inferior valve mounting hole to fix down the casing, be convenient for effectively fix down casing and battery package outer courage utilization mounting hole and connecting piece. When the flange face is fixed by the battery package fixed bolster crimping of outer courage in this scheme, can omit the use step of connecting piece, reduce installation time.
Further, the lower shell further comprises a sealing part arranged on the outer side of the edge of the lower shell body, and a sealing groove is arranged at the upper end of the sealing part and is used for being matched with the upper cover to realize sealing.
In this scheme, set up sealing portion in the edge outside of lower casing body, set up the seal groove in sealing portion department, be convenient for utilize seal groove and upper cover to realize sealedly, improve the sealed effect of battery box.
Further, in the vertical height direction, the lower shell side wall reinforcing structure is positioned below the sealing groove; and/or in the horizontal direction, the outer side surface of the lower shell side wall reinforcing structure protrudes out of the outer side surface positioned in the sealing groove.
In this scheme inferior valve lateral wall additional strengthening is located the below of seal groove, and inferior valve lateral wall additional strengthening's lateral surface protrusion is in the lateral surface of seal groove, and this kind of setting mode can utilize inferior valve lateral wall additional strengthening to realize partial seal and connection effect when the seal groove became invalid.
Further, be equipped with buckle riser on the lateral wall of lower casing body, be equipped with the buckle on the buckle riser, the buckle is through setting up in the knot hole cooperation of upper cover, realizes the upper cover and is connected of lower casing.
In this scheme, buckle on the buckle riser and upper cover button hole cooperation realize the upper cover and be connected with lower casing, in this kind of setting mode, can effectively realize the connection of upper cover and lower casing.
And/or the lower shell body is connected with the first connecting piece, the first connecting piece can be connected with the second connecting piece at the upper cover in a clamping way to realize detachable connection, the contact surface of the first connecting piece and the contact surface of the second connecting piece are inclined planes, and in the connection process of the upper cover and the lower shell, the contact surface of the first connecting piece and the contact surface of the second connecting piece move along the guiding of the inclined planes, so that the upper cover moves towards the direction close to the lower shell.
In this kind of setting mode, through promoting the upper cover along the horizontal direction, just can realize the effective connection and the seal between upper cover and the lower casing, can avoid from the top down to extrude the structural damage problem that causes when the lower casing is connected.
The application also provides a lower box body of the battery pack, which comprises a lower shell and the lower shell of the battery pack, wherein the lower shell and the lower shell are mutually sleeved, the lower shell is made of a nonmetallic composite material, and the edge of the lower shell is connected with a lower shell side wall reinforcing structure.
In the scheme, the lower case body is sleeved with the lower outer case and the lower inner case, and the lower outer case is supported by adopting a nonmetallic material, so that the structural strength of the lower case body of the battery pack can be further improved under the condition of reducing weight.
Further, a lower shell gap is arranged between the lower shell and the lower shell, and the lower shell gap is filled with an insulation layer.
In this scheme set up the inferior valve clearance between inferior valve body and inferior valve, the heat preservation in the inferior valve clearance can effectively increase the thermal insulation performance of lower box.
Further, the side wall of the lower shell is provided with a concave-convex reinforcing structure, the concave-convex reinforcing structure comprises a convex part and a concave part, and the convex part and the concave part are arranged at intervals along the circumferential direction of the side wall of the lower shell; and/or the lower shell side wall reinforcing structure further comprises a vertical rib plate arranged on the outer side wall of the lower shell, and a filling gap is formed between the vertical rib plate and the side wall of the lower shell.
In the scheme, the concave-convex reinforcing mechanism is arranged on the side wall of the lower shell, so that the structural strength of the lower shell can be improved; meanwhile, the vertical rib plates in the scheme can further increase the structural strength of the lower shell. The setting in filling the clearance can not influence the packing of heat preservation material in the inferior valve clearance when reinforcing intensity to make whole inferior valve body all have good heat preservation effect.
Further, at least part of the vertical rib plates are arranged corresponding to the convex parts; and/or the lower part of the vertical rib plate is provided with a chamfer structure.
At least part of the vertical rib plates are arranged on the protruding portions, so that the size of the vertical rib plates can be increased conveniently.
The application also provides a heat-insulating battery pack, which comprises the lower shell of the battery pack and an upper cover matched with the lower shell of the battery pack;
or the heat-preservation battery pack comprises the lower box body of the battery pack and also comprises an upper cover matched with the lower box body of the battery pack.
The heat preservation battery pack in this scheme includes foretell lower casing and upper cover, perhaps includes foretell lower box and upper cover, can make heat preservation battery pack when guaranteeing structural strength, reduce weight, guarantees the heat preservation thermal-insulated performance of battery pack.
The application has the positive progress effects that:
the heat preservation battery pack in this scheme adopts non-metal composite in lower casing and lower shell, can guarantee certain structural strength in the time of reducing weight.
Simultaneously, through set up inferior valve lateral wall additional strengthening in inferior valve department in this scheme, also set up corresponding additional strengthening in inferior valve department, further increased the structural strength of whole heat preservation battery package.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:
fig. 1 is a schematic view of the three-dimensional structure of the lower housing of embodiment 1 of the present application.
Fig. 2 is a schematic view showing the bottom view of the lower housing of embodiment 1 of the present application.
Fig. 3 is a schematic view of a partially enlarged structure of the lower case of embodiment 1 of the present application.
Fig. 4 is a schematic bottom structure of the lower housing of embodiment 1 of the present application.
Fig. 5 is an enlarged schematic view of a partial structure of the bottom of the lower case of embodiment 1 of the present application.
Fig. 6 is a schematic view showing a sectional structure of the insulated battery pack according to embodiment 1 of the present application mounted in an outer container.
Fig. 7 is a schematic view of the lower case and the battery mounting bracket in the outer container according to embodiment 1 of the present application.
Fig. 8 is a schematic structural view of an upper cover according to embodiment 1 of the present application.
Fig. 9 is a schematic diagram showing a sectional structure of a thermal insulation battery pack according to embodiment 1 of the present application.
Fig. 10 is a schematic perspective view of a thermal insulation battery pack according to embodiment 1 of the present application.
Fig. 11 is a schematic view showing a three-dimensional structure of an upper cover according to embodiment 2 of the present application.
Fig. 12 is a schematic view showing a three-dimensional structure of the lower case of embodiment 2 of the present application.
Fig. 13 is a schematic plan view of the lower case of embodiment 2 of the present application.
Fig. 14 is an enlarged schematic view of the structure of the portion a in fig. 13.
Reference numerals illustrate:
100. an outer bladder;
1011. a bracket connecting flange; 10111. the bracket is provided with an embedded nut;
102. a battery pack fixing bracket;
200. a heat-preserving battery pack;
201. an upper cover; 2024. a button hole;
2024. a button hole;
202. lower box body
2021. A lower housing;
20211. a lower housing body;
20212. a lower shell side wall reinforcing structure; 202121, flange faces; 202122, lower shell mounting holes; 202123, lower shell reinforcing risers; 202124, lower shell reinforcing cross plates; 2021251, insert nuts;
20213a, sealing; 20213. sealing grooves;
20214. a buckle vertical plate;
20215. a buckle;
20217. vertical rib plates;
2022. a lower housing; 2023. a lower shell gap;
20223. a concave-convex reinforcing structure; 202231 and a projection; 202232, a recess;
2011. a first connector;
20218. a second connector;
Detailed Description
In order to more clearly illustrate the general inventive concept, a detailed description is given below by way of example with reference to the accompanying drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, however, the present application may be practiced in other ways than those described herein, and therefore the scope of the present application is not limited to the specific embodiments disclosed below.
In addition, in the description of the present application, it should be understood that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the devices 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 application.
In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; the device can be mechanically connected, electrically connected and communicated; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means 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 application. In this specification, schematic representations of the above terms are not necessarily directed 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.
Example 1
As shown in fig. 1-10, the present embodiment provides a lower case of a battery pack, which is made of a non-metal composite material, and the lower case 2021 includes a lower case body 20211 and a lower case sidewall reinforcement structure 20212 disposed outside an edge of the lower case body 20211. The lower case side wall reinforcement structure 20212 can be connected to the battery pack fixing bracket 102 of the outer container 100.
In this embodiment, the lower housing 2021 of the battery pack is made of a non-metal composite material, which can reduce weight and ensure a certain structural strength compared to a metal material. In the case of adopting the nonmetallic composite material, the embodiment sets the lower case sidewall reinforcement structure 20212 outside the edge of the lower case body 20211, and the lower case sidewall reinforcement structure 20212 can further enhance the structural strength of the lower case 2021, so as to avoid the damage of the whole battery pack due to insufficient structural strength of the lower case sidewall.
In this embodiment, the lower case side wall reinforcement structure 20212 includes a plurality of lower case reinforcement risers 202123 extending outwardly in a direction perpendicular to the side wall of the lower case body 20211, and lower case reinforcement cross plates 202124 respectively connecting the distal ends of the respective lower case reinforcement risers 202123.
In this embodiment, a plurality of lower shell reinforcing risers 202123 extend outwards perpendicular to the sidewall direction of the lower shell body 20211, and corresponding lower shell reinforcing cross plates 202124 are respectively connected to the distal ends of the lower shell reinforcing risers 202123; in this arrangement, the plurality of lower shell reinforcing risers 202123 and the connected lower shell reinforcing cross plates 202124 can be combined to form a hollow reinforcing structure without greatly increasing the weight of the lower shell 2021 while ensuring the lower shell structure reinforcement.
In this embodiment, a plurality of lower shell reinforcing cross plates 202124 are arranged at intervals, and each lower shell reinforcing cross plate 202124 is connected to each lower shell reinforcing vertical plate 202123.
The lower shell reinforcing cross plates 202124 in this embodiment are arranged at intervals, and this arrangement mode makes each two lower shell reinforcing vertical plates 202123 and the corresponding lower shell reinforcing cross plates 202124 be combined into a relatively independent and hollow reinforcing mechanism, so that the weight increase of the lower shell 2021 is further reduced under the condition of ensuring the lower shell structure to be reinforced.
In this embodiment, the lower shell reinforcing cross plates 202124 are parallel to each other; and/or each lower shell reinforcing cross plate 202124 is parallel to the side wall of the lower shell body 20211, and/or each lower shell reinforcing vertical plate 202123 of the lower shell side wall reinforcing structure 20212 located on the same side of the lower shell body 20211 is parallel to each other; and/or the lower shell reinforcement cross plates 202124 are perpendicular to each lower shell reinforcement riser 202123. The arrangement mode is convenient for enabling each lower shell reinforcing transverse plate 202124 to be convenient for uniform molding and manufacturing, and reducing manufacturing difficulty; simultaneously, the plurality of lower shell reinforcing transverse plates 202124 and the lower shell reinforcing vertical plates 202123 are stressed together, so that the structural strength is improved.
In this embodiment, the battery pack is disposed in the outer container 100 to form a battery pack assembly, and the lower shell sidewall reinforcement structure 20212 is connected to the battery pack fixing bracket 102 of the outer container 100.
In this embodiment, the lower shell sidewall reinforcement structure 20212 is connected to the battery pack fixing bracket 102 of the outer container 100, which increases the utilization of the lower shell sidewall reinforcement structure 20212.
In this embodiment, the lower shell sidewall reinforcement structure 20212 has a flange surface 202121 extending horizontally and outwards, a lower shell mounting hole 202122 extending downward is provided on the flange surface 202121, and the lower shell mounting hole 202122 is used for connecting a connecting piece to fix the lower shell 2021, and the lower shell mounting hole 202122 is connected to the sidewall of the lower shell body 20211 through a reinforcing rib disposed at a distance.
In this embodiment, the flange 202121 is provided with the lower case mounting hole 202122, and when the lower case 2021 is fixed by the lower case mounting hole 202122, the lower case 2021 and the battery pack outer container 100 are effectively fixed by the mounting hole and the connecting member. When the flange surface 202121 is pressure-bonded and fixed by the battery pack fixing bracket 102 of the outer container 100 in the present embodiment, the use of the connector can be omitted, and the mounting time can be reduced.
Specifically, the lower housing mounting hole 202122 is formed by embedding the insert nut 2021251 while the nonmetallic composite material is being molded.
Preferably, the inner wall of the insert nut 2021251 is smooth or threaded.
Preferably, the top end surface of the insert nut 2021251 is flush with the flange surface 202121 of the lower shell sidewall reinforcement structure 20212 or protrudes beyond the flange surface 202121. This structural arrangement avoids direct contact of the connector with the non-metallic composite material, so that the force transmitted by the connector is transmitted entirely through the insert nut 2021251 to the flange face 202121.
Preferably, the bottom end surface of the insert nut 2021251 is flush with the flange surface 202121 of the lower shell sidewall reinforcement structure 20212 or protrudes beyond the flange surface 202121. This structural arrangement avoids direct contact of the connector with the non-metallic composite material, so that the force transmitted by the connector is transmitted entirely through the insert nut 2021251 to the flange face 202121.
Specifically, the battery pack fixing bracket 102 of the outer container 100 is provided with a bracket connecting flange 1011, and a threaded hole for connecting the mounting hole at the flange face of the lower housing is formed at the bracket connecting flange 1011 by embedding a bracket embedded nut 10111.
In this embodiment, the lower housing 2021 further includes a sealing portion disposed outside the edge of the lower housing body 20211, and the sealing portion has a sealing groove 20213 at an upper end thereof, where the sealing groove 20213 is configured to cooperate with the upper cover 201 to achieve sealing.
In this embodiment, a sealing portion 20213a is provided outside the edge of the lower housing body 20211, and a sealing groove 20213 is provided at the sealing portion, so that sealing is conveniently achieved by using the sealing groove 20213 and the upper cover 201, and the sealing effect of the battery box is improved.
In this embodiment, the lower shell sidewall reinforcement structure 20212 is located below the seal groove 20213 in the vertical height direction, so that the lower shell sidewall reinforcement structure 20212 and the seal groove 20213 are separated in the height direction and not flush, and the sealing structure is also failed after the lower shell sidewall reinforcement structure 20212 is broken and damaged by external force. The method comprises the steps of carrying out a first treatment on the surface of the
In the horizontal direction, the outer side surface of the lower case side wall reinforcing structure 20212 protrudes outside the outer side surface of the seal groove 20213. This can further pull the two apart, avoiding damage to the lower shell sidewall reinforcement structure 20212 from affecting the seal.
In this embodiment, the lower shell sidewall reinforcement structure 20212 is located below the seal groove 20213, and the outer side surface of the lower shell sidewall reinforcement structure 20212 protrudes from the outer side surface of the seal groove 20213, so that when the seal groove 20213 fails, the lower shell sidewall reinforcement structure 20212 can be used to achieve a partial sealing and connection effect.
In this embodiment, a fastening vertical plate 20214 is disposed on a side wall of the lower housing body 20211, a fastening 20215 is disposed on the fastening vertical plate 20214, and the fastening 20215 is matched with a fastening hole 2024 disposed on the upper cover 201 to connect the upper cover 201 and the lower housing 2021.
In this embodiment, the connection between the upper cover 201 and the lower housing 2021 is achieved by matching the buckle 20215 on the buckle riser 20214 with the buckle hole 2024 of the upper cover 201, and in this arrangement, the connection between the upper cover 201 and the lower housing 2021 can be effectively achieved.
The embodiment also provides a lower case of a battery pack, where the lower case 202 includes a lower housing 2022 and a lower housing 2021 of the battery pack, the lower housing 2022 and the lower housing 2021 are sleeved with each other, the lower housing 2022 is made of a non-metal composite material, and an edge of the lower housing 2022 is connected with a lower housing sidewall reinforcement structure 20212. This arrangement can increase the structural strength of the battery pack lower case 202 with reduced weight in the present embodiment.
In this embodiment, a lower shell gap 2023 is provided between the lower shell 2022 and the lower shell 2021, and the lower shell gap 2023 is filled with a heat insulation layer. The insulation in the lower shell gap 2023 can effectively increase the insulation performance of the lower case 202.
The embodiment also provides a thermal insulation battery pack, wherein the thermal insulation battery pack 200 comprises a lower shell 2021 of the battery pack, and further comprises an upper cover 201 matched with the lower shell 2021 of the battery pack;
alternatively, the insulated battery pack 200 includes a lower case 202 of the battery pack, and further includes an upper cover 201 that mates with the lower case 202 of the battery pack.
The heat-preservation battery pack 200 in this embodiment reduces the weight while ensuring the structural strength, and ensures the heat-preservation and heat-insulation properties of the battery pack.
Example 2
As shown in fig. 11 to 14, the lower housing 2021 of the present embodiment has substantially the same structure as that of embodiment 1, except that the lower housing side wall reinforcement structure 20212 further includes a plurality of vertical rib plates 20217 disposed on the outer side wall of the lower housing body 20211, and the plurality of vertical rib plates 20217 are disposed at intervals along the circumferential direction of the outer side wall of the lower housing 2021 and connected to the lower housing reinforcement stand plates 202123.
In this embodiment, a plurality of vertical rib plates 20217 are arranged at intervals along the peripheral direction of the outer side wall of the lower housing 2021, and are connected with the lower housing reinforcing vertical plates 202123, so that the structural strength of the lower housing 2021 is further increased.
In this embodiment, the lower case sidewall reinforcement structure 20212 has a flange surface 202121 extending horizontally and outwardly, and no lower case mounting hole 202122 is provided on the flange surface 202121, and the flange surface 202121 can be press-fitted and fixed by the battery pack fixing bracket 102 of the outer container 100.
In this embodiment, the lower housing body 20211 is connected to the first connecting member 2011, the first connecting member 2011 can be clamped with the second connecting member 20218 at the upper cover 201 to achieve detachable connection, the contact surface of the first connecting member 2011 and the contact surface of the second connecting member 20218 are inclined surfaces, and in the connection process of the upper cover 201 and the lower housing 2021, the contact surface of the first connecting member 2011 and the contact surface of the second connecting member 20218 move along the guiding direction of the inclined surfaces, so that the upper cover 201 moves towards the direction approaching the lower housing 2021.
In this arrangement, by pushing the upper cover 201 in the horizontal direction, effective connection and sealing between the upper cover 201 and the lower housing 2021 can be achieved, and structural damage caused when the upper cover 201 is pressed from above to below to connect the lower housing 2021 can be avoided.
The embodiment also provides a lower case of a battery pack, where the lower case 202 includes a lower housing 2022 and a lower housing 2021 of the battery pack, the lower housing 2022 and the lower housing 2021 are sleeved with each other, the lower housing 2022 is made of a non-metal composite material, and an edge of the lower housing 2022 is connected with a lower housing sidewall reinforcement structure 20212. This arrangement can increase the structural strength of the battery pack lower case 202 with reduced weight in the present embodiment.
In this embodiment, a lower shell gap 2023 is provided between the lower shell 2022 and the lower shell 2021, and the lower shell gap 2023 is filled with a heat insulation layer. The insulation layer in the lower shell gap 2023 can effectively increase the insulation performance of the lower case 202, and the insulation layer includes an aerogel layer and/or a foaming material layer.
The embodiment also provides a thermal insulation battery pack, wherein the thermal insulation battery pack 200 comprises a lower shell 2021 of the battery pack, and further comprises an upper cover 201 matched with the lower shell 2021 of the battery pack;
alternatively, the insulated battery pack 200 includes a lower case 202 of the battery pack, and further includes an upper cover 201 that mates with the lower case 202 of the battery pack.
The heat-preservation battery pack 200 in this embodiment reduces the weight while ensuring the structural strength, and ensures the heat-preservation and heat-insulation properties of the battery pack.
The side wall of the lower housing 2022 in this embodiment is provided with a concave-convex reinforcing structure 20223, the concave-convex reinforcing structure 20223 includes a convex portion 202231 and a concave portion 202232, and the convex portion 202231 and the concave portion 202232 are arranged at intervals along the circumferential direction of the side wall of the lower housing 2022; and/or the lower shell sidewall reinforcement structure 20212 further includes a vertical rib 20217 disposed on an outer sidewall of the lower shell 2021, with a filling gap between the vertical rib 20217 and a sidewall of the lower shell 2022. The setting in filling the clearance can not influence the packing of heat preservation material in the inferior valve clearance when reinforcing intensity to make whole inferior valve body all have good heat preservation effect.
A concave-convex reinforcing mechanism is provided on the side wall of the lower housing 2022, so that the structural strength of the lower housing 2022 can be increased; at the same time, the vertical rib 20217 in this embodiment can further increase the structural strength of the lower housing 2022.
In this embodiment, at least part of the vertical rib 20217 is provided corresponding to the protruding portion 202231; and/or the lower portion of the vertical web 20217 is formed with a chamfer structure.
At least a portion of the vertical web 20217 in this embodiment is provided for the projection 202231, so as to facilitate increasing the size of the vertical web 20217.
The nonmetallic material of any of the above-described embodiments 1 or 2 of the present application may include a fiber-reinforced resin-based composite material, preferably a fiber-reinforced resin-based composite material, including a glass fiber-reinforced resin-based composite material, and/or a carbon fiber-reinforced resin-based composite material, and/or a resin fiber-reinforced resin-based composite material, and/or a ceramic fiber-reinforced resin-based composite material, more preferably a glass fiber-reinforced resin-based composite material, still more preferably a glass fiber-reinforced resin-based composite material of SMC (Sheet mo l d i ng compound),
SMC (Sheet mo l d i ng compound) A glass fiber reinforced resin matrix composite is prepared from special SMC yarn, unsaturated resin, low-shrinkage additive, filler and assistants. The metal box is molded by high-temperature one-step compression molding, has the advantages of high mechanical strength, light weight, corrosion resistance, long service life, high insulating strength, arc resistance, flame retardance, good sealing performance, flexible product design, easy mass production, safety and attractive appearance, has all-weather protection function, and overcomes the defects of easy corrosion, short service life, poor heat insulation and heat preservation performance and the like of a metal box body.
In this specification, each embodiment is described in a progressive manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments. In particular, for system embodiments, since they are substantially similar to method embodiments, the description is relatively simple, as relevant to see a section of the description of method embodiments.
The foregoing is merely exemplary of the present application and is not intended to limit the present application. Various modifications and variations of the present application will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the application are to be included in the scope of the claims of the present application.
Claims (15)
1. The lower shell of the battery pack is characterized by being made of a nonmetallic composite material, and comprises a lower shell body and a lower shell side wall reinforcing structure arranged on the outer side of the edge of the lower shell body.
2. The lower case of the battery pack according to claim 1, wherein the lower case side wall reinforcing structure comprises a plurality of lower case reinforcing risers extending outwardly in a direction perpendicular to the side wall of the lower case body, and lower case reinforcing cross plates respectively connecting distal ends of the lower case reinforcing risers.
3. The lower case of the battery pack according to claim 2, wherein a plurality of lower case reinforcing cross plates are provided at intervals, each of the lower case reinforcing cross plates being connected to each of the lower case reinforcing upright plates, respectively.
4. The lower case of the battery pack according to claim 3, wherein each of the lower case reinforcing cross plates is parallel to each other;
and/or, each lower shell reinforcing transverse plate is parallel to the side wall of the lower shell body;
and/or, each lower shell reinforcing vertical plate of the lower shell side wall reinforcing structure positioned on the same side of the lower shell body is parallel to each other;
and/or, the lower shell reinforcing transverse plates are perpendicular to each lower shell reinforcing vertical plate.
5. The lower case of the battery pack according to claim 2, wherein the lower case side wall reinforcing structure further comprises a plurality of vertical rib plates provided at the outer side wall of the lower case body, and a plurality of the vertical rib plates are provided at intervals along the circumference of the outer side wall of the lower case body and connected to the lower case reinforcing vertical plates.
6. The lower housing of a battery pack of any one of claims 1-5, wherein the battery pack is adapted to be placed within an outer container to form a battery pack assembly, and wherein the lower housing sidewall reinforcement structure is adapted to be coupled to a battery pack securement bracket of the outer container.
7. The lower case of the battery pack according to claim 6, wherein the lower case side wall reinforcing structure has a flange surface extending horizontally outward:
the flange surface is provided with a lower shell mounting hole extending downwards, the lower shell mounting hole is used for connecting a connecting piece to fix the lower shell, and the lower shell mounting hole is connected with the side wall of the lower shell body through reinforcing ribs arranged at intervals;
or the flange surface can be pressed and fixed by the battery pack fixing bracket of the outer container.
8. The lower case of the battery pack according to any one of claims 1 to 5, further comprising a sealing part provided outside an edge of the lower case body, the sealing part having a sealing groove at an upper end thereof for sealing in cooperation with an upper cover.
9. The lower case of the battery pack according to claim 7, wherein the lower case side wall reinforcing structure is located below the sealing groove in a vertical height direction;
and/or, in the horizontal direction, the outer side surface of the lower shell side wall reinforcing structure protrudes out of the outer side surface of the sealing groove.
10. The lower case of the battery pack according to any one of claims 1 to 5, wherein a snap-fit riser is provided on a side wall of the lower case body, and a snap-fit is provided on the snap-fit riser, the snap-fit being engaged with a snap-fit hole provided in the upper cover to achieve connection of the upper cover to the lower case;
and/or, the lower shell body is connected with the first connecting piece, the first connecting piece can be connected with the second connecting piece at the upper cover in a clamping way to realize detachable connection, the contact surface of the first connecting piece and the contact surface of the second connecting piece are inclined planes, and in the connection process of the upper cover and the lower shell, the contact surface of the first connecting piece and the contact surface of the second connecting piece move along the guiding of the inclined planes, so that the upper cover moves towards the direction close to the lower shell.
11. A lower case of a battery pack, comprising a lower case and a lower case of the battery pack according to any one of claims 1 to 15, wherein the lower case and the lower case are sleeved with each other, the lower case is made of a non-metal composite material, and an edge of the lower case is connected with the lower case side wall reinforcing structure.
12. The lower case of the battery pack according to claim 11, wherein a lower case gap is provided between the lower case and the lower case, and the lower case gap is filled with a heat insulating layer.
13. The lower case of the battery pack according to claim 11, wherein a concave-convex reinforcing structure is provided on a side wall of the lower case, the concave-convex reinforcing structure including a convex portion and a concave portion, the convex portion and the concave portion being disposed at intervals in a circumferential direction of the side wall of the lower case;
and/or, the lower shell side wall reinforcing structure further comprises a vertical rib plate arranged on the outer side wall of the lower shell, and a filling gap is formed between the vertical rib plate and the side wall of the lower shell.
14. The lower case of the battery pack according to claim 13, wherein at least part of the vertical rib is provided corresponding to the projection;
and/or a chamfer structure is formed at the lower part of the vertical rib plate.
15. A thermal insulation battery pack, characterized in that the thermal insulation battery pack comprises a lower shell of the battery pack according to any one of claims 1-10, and further comprises an upper cover matched with the lower shell of the battery pack;
alternatively, the insulated battery pack comprises the lower case of the battery pack of any one of claims 11-14, and further comprises an upper cover that mates with the lower case of the battery pack.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210625736 | 2022-06-02 | ||
| CN2022106257362 | 2022-06-02 |
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| CN117175106A true CN117175106A (en) | 2023-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211733183.9A Pending CN117175106A (en) | 2022-06-02 | 2022-12-30 | Lower shell, lower box and heat preservation battery package of battery package |
| CN202223610662.XU Active CN219779058U (en) | 2022-06-02 | 2022-12-30 | Lower shell of battery pack, heat preservation battery pack and battery pack assembly |
| CN202211729193.5A Pending CN116666854A (en) | 2022-06-02 | 2022-12-30 | Lower box of battery pack and heat preservation battery pack |
| CN202223610514.8U Active CN219843065U (en) | 2022-06-02 | 2022-12-30 | Lower shell, lower box and heat preservation battery package of battery package |
| CN202211733590.XA Pending CN117175112A (en) | 2022-06-02 | 2022-12-30 | Lower shell of battery pack, heat preservation battery pack and battery pack assembly |
| CN202223605674.3U Active CN219873805U (en) | 2022-06-02 | 2022-12-30 | Lower inner shell, lower shell, battery box and battery pack of battery pack |
| CN202211727345.8A Pending CN117175111A (en) | 2022-06-02 | 2022-12-30 | Lower inner shell, lower shell, battery box and battery pack of battery pack |
| CN202223606237.3U Active CN219106356U (en) | 2022-06-02 | 2022-12-30 | Lower box of battery pack and heat preservation battery pack |
| CN202321406062.3U Active CN220914425U (en) | 2022-06-02 | 2023-06-02 | Inferior valve, heat preservation battery package and battery package assembly of battery package |
Family Applications After (8)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223610662.XU Active CN219779058U (en) | 2022-06-02 | 2022-12-30 | Lower shell of battery pack, heat preservation battery pack and battery pack assembly |
| CN202211729193.5A Pending CN116666854A (en) | 2022-06-02 | 2022-12-30 | Lower box of battery pack and heat preservation battery pack |
| CN202223610514.8U Active CN219843065U (en) | 2022-06-02 | 2022-12-30 | Lower shell, lower box and heat preservation battery package of battery package |
| CN202211733590.XA Pending CN117175112A (en) | 2022-06-02 | 2022-12-30 | Lower shell of battery pack, heat preservation battery pack and battery pack assembly |
| CN202223605674.3U Active CN219873805U (en) | 2022-06-02 | 2022-12-30 | Lower inner shell, lower shell, battery box and battery pack of battery pack |
| CN202211727345.8A Pending CN117175111A (en) | 2022-06-02 | 2022-12-30 | Lower inner shell, lower shell, battery box and battery pack of battery pack |
| CN202223606237.3U Active CN219106356U (en) | 2022-06-02 | 2022-12-30 | Lower box of battery pack and heat preservation battery pack |
| CN202321406062.3U Active CN220914425U (en) | 2022-06-02 | 2023-06-02 | Inferior valve, heat preservation battery package and battery package assembly of battery package |
Country Status (1)
| Country | Link |
|---|---|
| CN (9) | CN117175106A (en) |
-
2022
- 2022-12-30 CN CN202211733183.9A patent/CN117175106A/en active Pending
- 2022-12-30 CN CN202223610662.XU patent/CN219779058U/en active Active
- 2022-12-30 CN CN202211729193.5A patent/CN116666854A/en active Pending
- 2022-12-30 CN CN202223610514.8U patent/CN219843065U/en active Active
- 2022-12-30 CN CN202211733590.XA patent/CN117175112A/en active Pending
- 2022-12-30 CN CN202223605674.3U patent/CN219873805U/en active Active
- 2022-12-30 CN CN202211727345.8A patent/CN117175111A/en active Pending
- 2022-12-30 CN CN202223606237.3U patent/CN219106356U/en active Active
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2023
- 2023-06-02 CN CN202321406062.3U patent/CN220914425U/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN116666854A (en) | 2023-08-29 |
| CN220914425U (en) | 2024-05-07 |
| CN219843065U (en) | 2023-10-17 |
| CN219873805U (en) | 2023-10-20 |
| CN117175111A (en) | 2023-12-05 |
| CN117175112A (en) | 2023-12-05 |
| CN219779058U (en) | 2023-09-29 |
| CN219106356U (en) | 2023-05-30 |
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