CN219779058U - Lower shell of battery pack, heat preservation battery pack and battery pack assembly - Google Patents
Lower shell of battery pack, heat preservation battery pack and battery pack assembly Download PDFInfo
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- CN219779058U CN219779058U CN202223610662.XU CN202223610662U CN219779058U CN 219779058 U CN219779058 U CN 219779058U CN 202223610662 U CN202223610662 U CN 202223610662U CN 219779058 U CN219779058 U CN 219779058U
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- shell
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- battery
- lower shell
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- 238000004321 preservation Methods 0.000 title claims description 45
- 239000002131 composite material Substances 0.000 claims abstract description 24
- 238000009413 insulation Methods 0.000 claims abstract description 20
- 230000003014 reinforcing effect Effects 0.000 claims description 7
- 230000007423 decrease Effects 0.000 claims description 2
- 230000013011 mating Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 7
- 239000011347 resin Substances 0.000 description 11
- 229920005989 resin Polymers 0.000 description 11
- 239000011159 matrix material Substances 0.000 description 9
- 238000006073 displacement reaction Methods 0.000 description 7
- 239000003677 Sheet moulding compound Substances 0.000 description 6
- 239000000835 fiber Substances 0.000 description 4
- 239000003365 glass fiber Substances 0.000 description 4
- 230000000994 depressogenic effect Effects 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000002905 metal composite material Substances 0.000 description 2
- 229910052755 nonmetal Inorganic materials 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000000748 compression moulding 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
- 230000003993 interaction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000005728 strengthening Methods 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 utility model relates to the technical field of electric automobiles, and discloses a lower outer shell of a battery pack, which is used for being mutually sleeved with a lower inner shell to form a lower shell of the battery pack, wherein the lower shell is used for being matched with an upper cover to form a heat-insulation battery pack, and is characterized in that: the lower shell is made of a nonmetallic composite material and comprises a lower shell body, the bottom edge of the lower shell body is provided with an inward-shrinking step matched with the bottom edge of the lower inner shell, and the bottom of the lower shell forms a groove matched with the edge bulge of the upper cover by utilizing the step. The utility model has the effect of relieving the problem that the two battery boxes stacked together are easy to relatively displace.
Description
Technical Field
The utility model relates to the field of electric automobiles, in particular to a lower shell of a battery pack, a heat-insulating battery pack and a battery pack assembly.
Background
The electric automobile has the advantages of zero emission, low noise, high operation and maintenance cost performance and the like, and is increasingly favored by users. The energy used by the electric automobile is the electric energy provided by the battery pack carried by the electric automobile, and the electric automobile needs to be charged after the electric energy is used. The battery pack of an electric vehicle is generally configured in a fixed type and a replaceable type, wherein the fixed type battery pack is generally fixed on a vehicle, and the vehicle is directly used as a charging object during charging. The replaceable battery pack is generally fixed on the bracket of the vehicle in a movable mounting manner, and the battery pack can be removed for independent replacement or charging operation, and is mounted on the vehicle after the replaced battery pack is charged.
For large vehicles (such as heavy trucks), a battery pack assembly with larger capacity is required, in the prior art, the battery capacity required by the battery pack assembly is achieved by connecting a plurality of standard battery packs in one outer container, and the standard battery packs are usually fixed with the outer container through some measures to avoid the problems of displacement and the like of the standard battery packs caused by shaking and the like, however, depending on the measures for fixing the standard battery packs and the outer container, the related fixing structure is complex, the effect is also not ideal, and particularly, the relative positions between the standard battery packs are difficult to fix.
Disclosure of Invention
In order to alleviate the problem that relative displacement is easy to occur in stacked standard battery containers, the utility model provides a lower shell of a battery pack, a heat-insulating battery pack and a battery pack assembly.
The utility model provides a lower shell of a battery pack, which adopts the following technical scheme:
the utility model provides a lower shell of battery package, its is used for mutually cover with lower inner shell establishes in order to constitute the inferior valve of battery package, the inferior valve is used for forming heat preservation battery package with the upper cover cooperation, its characterized in that: the lower shell is made of a nonmetallic composite material and comprises a lower shell body, the bottom edge of the lower shell body is provided with an inward-shrinking step matched with the bottom edge of the lower inner shell, and the bottom of the lower shell forms a groove matched with the edge bulge of the upper cover by utilizing the step.
By adopting the technical scheme, the bottom edge of the lower shell body is provided with the inward-contraction step matched with the bottom edge of the lower inner shell, the bottom of the lower shell forms the groove matched with the edge bulge of the upper cover by using the step, when the heat-preservation battery packs are stacked together, two adjacent heat-preservation battery packs are mutually positioned by the edge bulge and the groove, the possibility of relative displacement between the two heat-preservation battery packs is reduced, and therefore, the structural stability in the battery pack assembly is improved; meanwhile, the lower shell is made of a nonmetallic composite material, so that the total weight of the box body can be reduced, and the lower shell made of the composite material is relatively less influenced by the ambient temperature, so that the temperature inside the box body can be better kept.
Optionally, the recess is disposed adjacent a side edge of the lower housing.
Through adopting above-mentioned technical scheme, the recess setting is being close to the side edge position of shell down, and the protruding and recess of edge correspond the setting to reach the effect of fixing a position two insulation battery boxes at circumference, further improve the stability of connecting between two insulation battery boxes.
Optionally, the bottom of the lower housing is provided with a bump, the bump is disposed along the edge of the bottom of the lower housing, and the groove is formed between the bump and the step.
Through adopting above-mentioned technical scheme, set up the lug in the bottom of shell down, form between lug and the step be used for with protruding complex recess in edge, utilize the lug to carry out spacingly to the edge arch, when making two heat preservation battery package stack together, the edge arch peg graft between lug and step, lug and step respectively with the bellied both sides wall butt in edge, improve the stability of being connected between two heat preservation battery box.
Optionally, the opening of the groove gradually decreases from an end near the bottom of the lower housing to an end near the top of the lower housing.
Through adopting above-mentioned technical scheme, the opening of recess reduces gradually by the one end that is close to the bottom of the lower shell to the one end that is close to the bottom of the lower shell top, after the protruding recess that gets into in edge, the both sides wall of recess inwards contracts gradually for the interact power between the protruding and recess lateral wall of edge increases gradually, improves the compactness of being connected between protruding and the recess of edge. The technical scheme can play a certain guiding role, so that the grooves and the edge protrusions are more easily matched when two adjacent battery packs are stacked.
Optionally, the lower part of the lower housing is inclined inwards to form an inclined plane structure.
Through adopting above-mentioned technical scheme, the lower part of shell inwards contracts down, forms inclined plane structure to improve the structural strength of shell bottom down, reduce the bottom of shell and take place the possibility of deformation when receiving the extrusion down, thereby reduce the inside original paper damage's of heat preservation battery package possibility, improve the security that the battery package assembly used.
Optionally, a concave-convex reinforcing structure is arranged on the side wall of the lower shell.
Through adopting above-mentioned technical scheme, set up unsmooth additional strengthening on the lateral wall of shell down, improve the structural strength of shell lateral wall down, reduce the lateral wall of shell down and take place the possibility of deformation when receiving the extrusion to reduce the inside original paper damage's of heat preservation battery package possibility, improve the security that the battery package assembly used.
Optionally, the concave-convex reinforcing structure includes a protruding portion and a first recessed portion, and the protruding portion and the first recessed portion are disposed at intervals along a sidewall circumferential direction of the lower housing.
Through adopting above-mentioned technical scheme, set up bulge and first depressed part at the lateral wall circumference direction interval of shell down, improve the structural strength of shell lateral wall down, reduce the lateral wall of shell and take place the possibility of deformation when receiving the extrusion down to reduce the possibility that the inside original paper of heat preservation battery package damaged, improve the security that the battery package assembly used.
Optionally, the lower part of the first concave part is further contracted inwards to form a second concave part; and/or the lug is positioned at the bottom edge of the convex part.
Through adopting above-mentioned technical scheme, the lower part of first depressed part further inwards contracts, forms the second depressed part, further improves the structural strength of shell lateral wall down.
The utility model also provides a heat-preservation battery pack, which adopts the following technical scheme:
the utility model provides a heat preservation battery package, includes upper cover and the lower shell of above-mentioned battery package, the upper cover includes the lid top and connects in the lid lateral part of lid top edge, the upper cover is in the lid top has the edge bulge that upwards extends, the edge bulge is used for cooperating with the recess of the bottom of setting up the lower shell at another battery package.
Through adopting above-mentioned technical scheme, set up the protruding edge that upwards extends on the lid top of upper cover, set up the recess in the lower shell bottom of battery package, when two heat preservation battery package stack together, realize mutual location through protruding and the recess in edge between two heat preservation battery packages, reduce the possibility of taking place relative displacement between two heat preservation battery packages to improve the structural stability in the battery package assembly.
Optionally, the upper cover is made of a nonmetallic composite material; and/or the width of the edge bulge is gradually narrowed along the upward direction, so that the cross section of the edge bulge is trapezoid with smaller top and larger bottom.
Through adopting above-mentioned technical scheme, the upper cover adopts non-metal composite to make, can reduce the total weight of box, and the upper cover of being made by composite receives ambient temperature's influence relatively less moreover, can keep the inside temperature of box better. The edge bulge with the trapezoid cross section can play a certain guiding role, so that the grooves and the edge bulge are more easily matched when two adjacent battery packs are stacked.
Optionally, the heat preservation battery pack further comprises a lower inner shell, the lower outer shell and the lower inner shell are mutually sleeved, a lower shell gap is formed between the lower outer shell and the lower inner shell, a heat preservation layer is filled in the lower shell gap, and the lower inner shell is made of a nonmetallic composite material.
By adopting the technical scheme, the lower inner shell is made of the nonmetallic composite material, so that the total weight of the box body can be reduced, and the lower inner shell made of the composite material is relatively less influenced by the ambient temperature, so that the temperature inside the box body can be better kept; the lower outer shell and the lower inner shell are mutually sleeved, a heat preservation layer is filled in a lower shell gap between the lower outer shell and the lower inner shell, and the heat preservation effect of the heat preservation battery box is further improved by the aid of the heat preservation layer.
The utility model also provides a battery pack assembly, which adopts the following technical scheme:
the battery pack assembly comprises an outer container, wherein a plurality of battery pack placement areas are respectively arranged in the outer container, standard pack components are arranged in each battery pack placement area, and each standard pack component comprises at least two heat-preservation battery packs; at least two heat-preservation battery packs of each standard pack assembly are mutually stacked along the vertical direction, and the adjacent two mutually stacked heat-preservation battery packs are mutually positioned through edge protrusions and grooves.
Through adopting above-mentioned technical scheme, be provided with a plurality of battery package in the battery package assembly and place the district, each battery package is placed the district and is all equipped with standard package subassembly, every standard package subassembly all includes two at least heat preservation battery package, stacks each other along vertical direction between two adjacent heat preservation battery packages, carries out mutual location to two heat preservation battery packages through the recess that sets up in heat preservation battery package bottom in top and the protruding edge that sets up in heat preservation battery package top in below, reduces the possibility of taking place relative displacement between two heat preservation battery packages to improve the structural stability in the battery package assembly.
In summary, the present utility model includes at least one of the following beneficial technical effects:
1. the bottom edge of the lower shell body is provided with the inward shrinkage step matched with the bottom edge of the lower inner shell, the bottom of the lower shell forms the groove matched with the edge bulge of the upper cover by using the step, when two heat-preservation battery packs are stacked together, the two heat-preservation battery packs are mutually positioned through the edge bulge and the groove, and the possibility of relative displacement between the two heat-preservation battery packs is reduced, so that the structural stability in the battery pack assembly is improved;
2. the concave-convex reinforcing structure is arranged on the side wall of the lower shell, so that the structural strength of the side wall of the lower shell is improved, the possibility of deformation of the side wall of the lower shell when being extruded is reduced, the possibility of damage of an original element in the heat-insulating battery pack is reduced, and the use safety of the battery pack assembly is improved;
3. the total weight of the box body can be reduced by adopting the lower inner shell made of the nonmetallic composite material, and the lower inner shell made of the composite material is relatively less influenced by the ambient temperature, so that the temperature inside the box body can be better kept; the lower outer shell and the lower inner shell are mutually sleeved, a heat preservation layer is filled in a lower shell gap between the lower outer shell and the lower inner shell, and the heat preservation effect of the heat preservation battery box is further improved by the aid of the heat preservation layer.
Drawings
FIG. 1 is a schematic view of a portion of a battery pack assembly according to an embodiment of the present utility model;
FIG. 2 is a schematic diagram of the portion of a standard packet component in an embodiment of the utility model;
FIG. 3 is a schematic view of the structure of a portion of a thermal insulation battery pack in an embodiment of the utility model;
FIG. 4 is a schematic view of the structure of the upper cover part in the embodiment of the present utility model;
FIG. 5 is a schematic view of the structure of the lower housing part in an embodiment of the present utility model;
FIG. 6 is an enlarged view of portion A of FIG. 5;
FIG. 7 is a cross-sectional view of a portion of a standard bag assembly in an embodiment of the present utility model;
fig. 8 is an enlarged view of a portion B in fig. 7.
Reference numerals: 1000. a battery pack assembly; 100. an outer bladder; 200. a heat-preserving battery pack; 210. an upper cover; 211. a cover top; 212. a cover side; 213. edge bulge; 220. a lower housing; 221. a bump; 222. a groove; 300. a concave-convex reinforcing structure; 310. a first concave portion; 320. a protruding portion; 330. and a second concave portion.
Detailed Description
The utility model is described in further detail below with reference to fig. 1-8.
The embodiment of the utility model discloses a battery pack assembly 1000. Referring to fig. 1 and 2, a battery pack assembly 1000 includes an outer container 100, a plurality of battery pack placement areas are respectively provided in the outer container 100, and a standard pack assembly is installed in each battery pack placement area, and the standard pack assembly includes two thermal insulation battery packs 200, and the two thermal insulation battery packs 200 are stacked on each other along a vertical direction.
Referring to fig. 3 and 4, the thermal insulation battery pack 200 includes an upper cover 210, the upper cover 210 includes a cover top 211, a cover side 212 is fixedly connected to an edge of the cover top 211, and the cover side 212 is integrally formed with the cover top 211. The cover top 211 has an upwardly extending rim projection 213, the width of the rim projection 213 being gradually narrowed in a direction away from the cover top 211 such that the cross section of the rim projection 213 is in a trapezoid shape having a small upper part and a large lower part, the rim projection 213 being integrally formed with the cover top 211. The edge protrusions 213 with the trapezoid cross section can play a certain guiding role, so that the grooves 222 are more easily matched with the edge protrusions 213 when two adjacent heat preservation battery packs 200 are stacked.
Referring to fig. 3, 4 and 5, the thermal insulation battery pack 200 further includes a lower case 220, the lower case 220 includes a lower case 220 body, the bottom edge of the lower case 220 body is provided with an inwardly contracted step adapted to the bottom edge of the lower inner case, the bottom of the lower case 220 is fixedly connected with a protrusion 221, the protrusion 221 is located at one side of the step near the bottom edge of the lower case 220, and a groove 222 for matching with the edge protrusion 213 of the upper cover 210 is formed between the protrusion 221 and the step. When two thermal insulation battery packs 200 are stacked together, the two thermal insulation battery packs 200 are mutually positioned through the edge protrusions 213 and the grooves 222, so that the possibility of relative displacement between the two thermal insulation battery packs 200 is reduced, and the structural stability in the battery pack assembly 1000 is improved.
Referring to fig. 4 and 5, the opening of the groove 222 is gradually reduced from the end near the bottom of the lower case 220 to the end near the top of the lower case 220, and when the edge protrusion 213 enters the groove 222, both sidewalls of the groove 222 are gradually contracted inward, so that the interaction force between the edge protrusion 213 and the sidewalls of the groove 222 is gradually increased, and the tightness of the connection between the edge protrusion 213 and the groove 222 is improved. In addition, the technical scheme can play a certain guiding role, so that the grooves 222 and the edge protrusions 213 are more easily matched when two adjacent heat-preservation battery packs 200 are stacked.
Referring to fig. 4 and 5, the side wall of the lower case 220 is inclined inward near the bottom thereof to form an inclined surface structure, thereby improving the structural strength of the bottom of the lower case 220, reducing the possibility of deformation when the bottom of the lower case 220 is extruded, thereby reducing the possibility of damage to the internal components of the thermal insulation battery pack 200, and improving the safety of the use of the battery pack assembly 1000.
Referring to fig. 1 and 5, the lower case 220 is provided on a sidewall thereof with a concave-convex reinforcement structure 300, the concave-convex reinforcement structure 300 including a plurality of first concave portions 310 which are inwardly contracted, a convex portion 320 is formed between two adjacent first concave portions 310, and the convex portion 320 and the first concave portions 310 are disposed at equal intervals along the sidewall circumferential direction of the lower case 220. By arranging the concave-convex reinforcing structure 300 on the side wall of the lower shell 220, the structural strength of the side wall of the lower shell 220 is improved, the possibility of deformation of the side wall of the lower shell 220 when being extruded is reduced, the possibility of damage to the internal elements of the heat-preservation battery pack 200 is reduced, and the use safety of the battery pack assembly 1000 is improved.
The end of the first recess 310 near the bottom of the lower housing 220 is further contracted inwards to form a second recess 330, which further improves the structural strength of the sidewall of the lower housing 220.
Referring to fig. 5, 6, 7 and 8, the number of the protrusions 221 is plural, the protrusions 221 are disposed in one-to-one correspondence with the protrusions 320, the protrusions 221 are fixedly connected to the bottom edges of the protrusions 320, and the lowermost ends of the protrusions 221 and the lowermost ends of the steps are located in the same plane.
The heat insulation battery box further comprises a lower inner shell, the lower outer shell 220 and the lower inner shell are mutually sleeved, a lower shell gap is formed between the lower outer shell 220 and the lower inner shell, and a heat insulation layer is filled in the lower shell gap. By filling the insulation layer in the lower case gap between the lower outer case 220 and the lower inner case, the insulation effect of the insulation battery case is improved by the insulation layer.
The upper cover 210, the lower inner case, and the lower outer case 220 are all made of a non-metal composite material. The nonmetallic composite material comprises a fiber reinforced resin matrix composite material, preferably the fiber reinforced resin matrix composite material comprises a glass fiber reinforced resin matrix composite material and/or a carbon fiber reinforced resin matrix composite material and/or a resin fiber reinforced resin matrix composite material and/or a ceramic fiber reinforced resin matrix composite material, more preferably the glass fiber reinforced resin matrix composite material, even more preferably SMC (Sheet molding compound), namely the glass fiber reinforced resin matrix composite material, SMC (Sheet molding compound), also called sheet molding compound, is a glass fiber reinforced resin matrix composite material, and the main raw materials comprise SMC special yarns, unsaturated resin, low shrinkage additives, fillers and various auxiliary agents. 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.
The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.
Claims (12)
1. The utility model provides a lower shell of battery package, its is used for mutually cover with lower inner shell establishes in order to constitute the inferior valve of battery package, the inferior valve is used for forming heat preservation battery package with the upper cover cooperation, its characterized in that: the lower shell is made of a nonmetallic composite material and comprises a lower shell body, the bottom edge of the lower shell body is provided with an inward-shrinking step matched with the bottom edge of the lower inner shell, and the bottom of the lower shell forms a groove matched with the edge bulge of the upper cover by utilizing the step.
2. The lower case of a battery pack according to claim 1, wherein: the recess is disposed adjacent a side edge of the lower housing.
3. The lower case of a battery pack according to claim 1, wherein: the bottom of the lower shell is provided with a lug, the lug is arranged along the edge of the bottom of the lower shell, and the groove is formed between the lug and the step.
4. The lower case of a battery pack according to claim 1, wherein: the opening of the groove gradually decreases from one end near the bottom of the lower housing to one end near the top of the lower housing.
5. The lower case of a battery pack according to claim 1, wherein: the lower part of the lower shell is inclined inwards to form an inclined plane structure.
6. A lower case of a battery pack according to any one of claims 1 to 5, wherein: the side wall of the lower shell is provided with a concave-convex reinforcing structure.
7. The lower case of a battery pack according to claim 6, wherein: the concave-convex reinforcing structure comprises a convex part and a first concave part, and the convex part and the first concave part are arranged at intervals along the circumferential direction of the side wall of the lower shell.
8. The lower case of a battery pack according to claim 7, wherein: the lower part of the first concave part is further contracted inwards to form a second concave part; and/or the lug is positioned at the bottom edge of the convex part.
9. A thermal insulation battery pack, characterized in that: a lower housing comprising an upper lid and a battery pack according to any one of claims 1-8, said upper lid comprising a lid top and lid sides connected to the lid top edges, said upper lid having upwardly extending edge projections at said lid top for mating with recesses provided in the bottom of the lower housing of another battery pack.
10. The insulated battery pack of claim 9, wherein: the upper cover is made of a nonmetallic composite material; and/or the width of the edge bulge is gradually narrowed along the upward direction, so that the cross section of the edge bulge is trapezoid with smaller top and larger bottom.
11. The insulated battery pack of claim 9, wherein: the heat-insulating battery pack further comprises a lower inner shell, the lower outer shell and the lower inner shell are mutually sleeved, a lower shell gap is formed between the lower outer shell and the lower inner shell, a heat-insulating layer is filled in the lower shell gap, and the lower inner shell is made of a nonmetallic composite material.
12. A battery pack assembly, characterized in that: the heat-insulating battery pack comprises an outer container, wherein a plurality of battery pack placement areas are respectively arranged in the outer container, each battery pack placement area is provided with a standard pack assembly, and each standard pack assembly comprises at least two heat-insulating battery packs according to any one of claims 9-11; at least two heat-preservation battery packs of each standard pack assembly are mutually stacked along the vertical direction, and the adjacent two mutually stacked heat-preservation battery packs are mutually positioned through edge protrusions and grooves.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210625736 | 2022-06-02 | ||
| CN2022106257362 | 2022-06-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219779058U true CN219779058U (en) | 2023-09-29 |
Family
ID=86467060
Family Applications (9)
| 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 Before (1)
| 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 |
Family Applications After (7)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| 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 |
| CN219106356U (en) | 2023-05-30 |
| CN117175106A (en) | 2023-12-05 |
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