CN218548685U - Lower box body of power battery pack - Google Patents
Lower box body of power battery pack Download PDFInfo
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- CN218548685U CN218548685U CN202222793853.8U CN202222793853U CN218548685U CN 218548685 U CN218548685 U CN 218548685U CN 202222793853 U CN202222793853 U CN 202222793853U CN 218548685 U CN218548685 U CN 218548685U
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- Prior art keywords
- box body
- power battery
- battery pack
- welding assembly
- plate
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- 238000003466 welding Methods 0.000 claims abstract description 66
- 238000001816 cooling Methods 0.000 claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229920000742 Cotton Polymers 0.000 claims abstract description 8
- 238000004321 preservation Methods 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 21
- 229910052782 aluminium Inorganic materials 0.000 claims description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 8
- 238000001125 extrusion Methods 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 5
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 239000007789 gas Substances 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 239000011261 inert gas Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 230000002829 reductive effect Effects 0.000 description 5
- 238000009413 insulation Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000000670 limiting effect Effects 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010009 beating Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000036961 partial effect Effects 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 2
- 239000010937 tungsten Substances 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910000734 martensite Inorganic materials 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 125000003003 spiro group Chemical group 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 229910001256 stainless steel alloy Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Images
Classifications
-
- 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
Landscapes
- Battery Mounting, Suspending (AREA)
Abstract
The utility model relates to a box under power battery package. The lower box body of the power battery pack comprises a box body welding assembly which is of a frame structure and comprises an edge beam, and a cross beam and a longitudinal beam which are connected with the edge beam; the bottom guard plate is fixedly connected with the tank body welding assembly through threads; the periphery of the water cooling plate is fixedly connected with the periphery of the bottom of the box body welding assembly, and the water cooling plate is arranged between the box body welding assembly and the bottom protection plate; the heat preservation cotton is arranged between the water cooling plate and the bottom protection plate. The utility model provides a box under power battery package, overall structure is compact, and the integrated efficiency is high, light in weight, with low costs and guarantee structural strength.
Description
Technical Field
The utility model relates to a new energy automobile structural design and manufacturing technical field especially relate to a box under power battery package.
Background
In recent years, new energy automobiles develop rapidly, the endurance mileage of the new energy automobiles is one of the most important points of attention, the battery pack system occupies 18% -30% of the total mass of the new energy automobiles, and the reduction of the mass of the battery pack plays an important role in improving the endurance of the electric automobiles.
The box body under traditional power battery package adopts the panel beating mode of bending or panel beating punching press more, in order to satisfy various laws and regulations requirement, and the box needs the various stiffening beams of welding assurance structural strength to satisfy the designing requirement. The welding spot of the box body is large in welding deformation, and the forming quality and the sealing effect of the box body are easily influenced.
Some traditional power battery packs adopt a metal plate bending or metal plate stamping mode, are made of steel, and are high in density and heavy in weight; adopt extrusion aluminium alloy a bit, the bottom plate adopts double-deck aluminum plate and frame to carry out friction stir welding, and overall structure is complicated.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned problem of prior art, the utility model provides a box under power battery package, overall structure is compact, and the integrated efficiency is high, light in weight, with low costs and guarantee structural strength.
Specifically, the utility model provides a power battery wraps box down, power battery wraps box down and includes:
the box body welding assembly is of a frame structure and comprises an edge beam, and a cross beam and a longitudinal beam which are connected with the edge beam;
the bottom guard plate is fixedly connected with the box body welding assembly through threads;
the periphery of the water cooling plate is fixedly connected with the periphery of the bottom of the box welding assembly, and the water cooling plate is arranged between the box welding assembly and the bottom guard plate;
the heat preservation cotton is arranged between the water cooling plate and the bottom protection plate.
According to the utility model discloses an embodiment, power battery wraps the lower box and still includes fixing bolt, the edge of end backplate with the bottom of boundary beam is fixed through the fixing bolt spiro union.
According to the utility model discloses an embodiment, power battery wraps the lower box and still includes first sealing washer, first sealing washer sets up the edge of backplate with between the bottom of boundary beam.
According to the utility model discloses an embodiment, box welding assembly adopts 6 to be aluminium to make through extrusion, boundary beam, crossbeam and longeron adopt MIG and/or TIG welded fastening.
According to the utility model discloses an embodiment, the periphery of water-cooling plate with the bottom periphery of box welding assembly adopts friction stir welding fixed.
According to the utility model discloses an embodiment, power battery wraps the lower box and still is including setting up sealed rivet nut on the backplate, the tip of sealed rivet nut upwards penetrates by the bottom water-cooling board supports and leans on the crossbeam.
According to the utility model discloses an embodiment, power battery wraps box down and still includes the second sealing washer, sets up sealed rivet nut and end between the backplate.
According to an embodiment of the present invention, the bottom guard plate is manufactured using DP 590.
According to an embodiment of the present invention, the thickness of the bottom protection plate is 0.7-1.1 mm.
According to the utility model discloses an embodiment, the inside strengthening rib that is equipped with of box welding assembly, the wall thickness of box welding assembly is 2.0 ~ 2.5mm.
The utility model provides a pair of box under power battery package, overall structure is compact, and the integrated efficiency is high, light in weight, with low costs and guarantee structural strength.
It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide further explanation of the invention as claimed.
Drawings
The accompanying drawings, which are included to provide a further explanation of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention. In the drawings:
fig. 1 shows a schematic structural diagram of a lower box of a power battery pack according to an embodiment of the present invention.
Fig. 2 shows a front view of the lower box of the power battery pack according to an embodiment of the present invention.
Fig. 3 is a cross-sectional view along AA of fig. 2.
Fig. 4 is an enlarged schematic view of a portion B in fig. 3.
Fig. 5 shows a schematic view of a partial structure of a lower box of a power battery pack according to an embodiment of the present invention.
Wherein the figures include the following reference numerals:
Water-cooled plate 103
Fixing bolt 108
Sealed blind rivet nut 110
Second seal ring 111
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the application, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as exemplary only and not as limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the case of not making a reverse description, these directional terms do not indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the present application; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
For ease of description, spatially relative terms such as "over … …", "over … …", "over … …", "over", etc. may be used herein to describe the spatial positional relationship of one device or feature to another device or feature as shown in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of protection of the present application is not to be construed as being limited. Further, although the terms used in the present application are selected from publicly known and used terms, some of the terms mentioned in the specification of the present application may be selected by the applicant at his or her discretion, the detailed meanings of which are described in relevant parts of the description herein. Further, it is required that the present application is understood not only by the actual terms used but also by the meaning of each term lying within.
Fig. 1 shows a schematic structural diagram of a lower box of a power battery pack according to an embodiment of the present invention. Fig. 2 shows a front view of the lower case of the power battery pack according to an embodiment of the present invention. Fig. 3 is a cross-sectional view along AA of fig. 2. As shown in the figure, the utility model provides a power battery wraps box 100 down. The lower box body 100 of the power battery pack mainly comprises a box body welding assembly 101, a bottom protection plate 102, a water cooling plate 103 and heat preservation cotton 104.
Referring to fig. 2, the box welding assembly 101 is a frame structure. The box welding assembly 101 comprises an edge beam 105, and a cross beam 106 and a longitudinal beam 107 which are connected with the edge beam 105. The box welding assembly 101 is used for carrying a power battery.
The bottom guard plate 102 is fixedly connected with the box body welding assembly 101 through threads. During vehicle travel, the underbody shield 102 serves to protect against underbody stoning, providing scuffing protection.
The periphery of the water cooling plate 103 is fixedly connected with the periphery of the bottom of the tank welding assembly 101. The water cooling plate 103 is arranged between the box welding assembly 101 and the bottom guard plate 102. The water cooling plate 103 is used for providing heat dissipation of the power battery.
The heat insulation cotton 104 is a layered structure and is fixed on the bottom guard plate 102. The heat insulation cotton 104 is arranged between the water cooling plate 103 and the bottom protection plate 102 at intervals. The heat insulation cotton 104 is used for reducing heat transfer between the water cooling plate 103 and the bottom protection plate 102, and heat management heating efficiency of the power battery is guaranteed.
Fig. 4 is an enlarged schematic view of a portion B in fig. 3. As shown, the lower case 100 of the power battery pack preferably further includes a fixing bolt 108. The edge of the bottom guard plate 102 is screwed with the bottom of the edge beam 105 by a fixing bolt 108. The structure facilitates the disassembly and replacement of the bottom protection plate 102, and when the bottom protection plate 102 deforms due to stone impact or friction, the bottom protection plate needs to be replaced, so that the structure can effectively reduce the maintenance cost. Preferably, the lower case 100 of the power battery pack further includes a first sealing ring 109. The first seal 109 is disposed between the edge of the backplate 102 and the bottom of the edge beam 105. The fixing bolt 108 passes through the first sealing ring 109 to fix the edge of the bottom guard plate 102 to the bottom of the edge beam 105. The first seal ring 109 is formed by foaming silica gel.
Preferably, the box welding assembly 101 is made of 6 series aluminum by extrusion molding. The side beams 105, the cross beams 106 and the longitudinal beams 107 of the box welding assembly 101 are fixed by MIG and/or TIG welding. Among them, TIG (Tungsten Inert Gas) welding stands for "Inert Gas welding". The arc welding is an arc welding which can not splash sparks and supports the welding of various metals such as stainless steel, aluminum, iron and the like. Tungsten, which is not consumed as a discharge electrode, is used, and Inert (Inert) gas such as argon gas or helium gas is used as a protective gas. An arc is generated in an inert gas, and the base metal is melted by the heat of the arc to perform welding. Although a welding material is used, since the welding portion is surrounded by an inert gas, the arc is stable and sputtering hardly occurs. MIG (Metal insert Gas) welding is arc welding, and similarly to TIG welding, uses an Inert Gas as a shielding Gas, but is an electrode consumable welding method of melting a discharge electrode. Generally, it is used for joining stainless steel and aluminum alloy, and a shielding gas is used depending on the welding material.
Preferably, the periphery of the water cooling plate 103 and the bottom periphery of the box welding assembly 101 are fixed by friction stir welding.
Fig. 5 shows a schematic view of a partial structure of a lower box of a power battery pack according to an embodiment of the present invention. As shown, the lower case 100 of the power battery pack preferably further includes a sealing rivet nut 110 disposed on the bottom protection plate 102, and as shown, the end of the sealing rivet nut 110 penetrates the water cooling plate 103 from right to left and abuts against the cross beam 106. Specifically, the edge of the bottom guard plate 102 is screwed and fixed with the bottom of the edge beam 105 of the box welding assembly 101. And a sealing rivet nut 110 is arranged in the middle of the bottom protection plate 102 close to the cross beam 106 of the box body welding assembly 101. The sealing rivet nut 110 can connect the water-cooled plate 103 and the cross beam 106 together, or alternatively, the space between the water-cooled plate 103 and the cross beam 106 can be maintained by the sealing rivet nut 110, and the structure between the two can be kept stable under the condition of compression. Further, welding can be avoided by the fixing structure of the sealing blind rivet nut 110, thereby reducing deformation of the lower case 100 due to welding. Preferably, the lower case 100 of the power battery pack further includes a second sealing ring 111. The second gasket 111 is disposed between the sealing blind rivet nut 110 and the backplate 102 to provide a level of protection to IP 68.
Preferably, the bottom shield 102 is manufactured using DP 590. The microstructure of DP590 is based on ferrite and contains island martensite, so that it has high strength and good forming performance; low yield ratio, high BH potential, high work hardening index and energy absorption capacity. The DP590 is suitable for use as stretch-formed (inner and outer) parts of a vehicle body, particularly impact-resistant parts, for structural, reinforcing and impact-resistant parts, such as floor cross-members, seat rails, crash bars, B-pillars and reinforcing plates, front side members and the like.
The thickness of the bottom guard plate 102 is preferably 0.7 to 1.1mm, preferably 1mm. Compared with the traditional double-layer aluminum plate, the thickness of the double-layer aluminum plate is about 10mm, and the bottom guard plate 102 in the embodiment is reduced by about 9mm. The yield strength of the DP590 material is 340-440 Mpa, the tensile strength is more than 590Mpa, the material of the extruded double-layer aluminum plate is 6061-T6, the yield strength is 230-260 Mpa, and the tensile strength is more than 270Mpa, so that the bottom guard plate 102 in the embodiment improves the structural strength while reducing the Z-direction (vertical direction) space.
Preferably, reinforcing ribs are arranged inside the box welding assembly 101, and the wall thickness of the box welding assembly 101 is 2.0-2.5 mm.
The utility model provides a pair of power battery wraps box down has following advantage:
(1) The integral welding points are few, the forming process is simple, and the sealing failure caused by the subsequent insufficient welding and welding penetration of the welding points is avoided;
(2) Under the condition of the same envelope and the same requirement, the weight of the battery pack is reduced by 60 percent compared with that of a sheet metal box body, and the bottom guard plate can be disassembled and replaced, so that the integral scrapping of the battery pack caused by slight bottom supporting is avoided;
(3) The water cooling plate and the box body welding assembly are integrated into a whole through friction stir welding, the integration efficiency is high, and the overall assembly efficiency of a subsequent battery pack can be improved;
(4) The traditional battery pack metal plate stamping die is high in cost, the cost of an upper cover die and a lower cover die of a battery pack with more than 3 sequences is generally more than 100 ten thousand, the cost of an extrusion section die is low, the cost of the extrusion section die is generally 1 to 2 ten thousand, the cost of the die can be reduced by about 80 percent according to the cost of 10 pairs of section dies, the compatibility on a platform project is high, and the die opening period is short;
(5) The bottom guard plate is made of DP590 materials, so that the Z-direction space is reduced and higher structural strength is ensured;
(6) And the sealed rivet nut is adopted, so that structural deformation caused by welding is reduced.
It will be apparent to those skilled in the art that various modifications and variations can be made to the above-described exemplary embodiments of the present invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.
Claims (10)
1. The utility model provides a box under power battery wraps, its characterized in that, box includes under the power battery wraps:
the box body welding assembly is of a frame structure and comprises an edge beam, and a cross beam and a longitudinal beam which are connected with the edge beam;
the bottom guard plate is fixedly connected with the box body welding assembly through threads;
the periphery of the water cooling plate is fixedly connected with the periphery of the bottom of the box welding assembly, and the water cooling plate is arranged between the box welding assembly and the bottom guard plate;
the heat preservation cotton is arranged between the water cooling plate and the bottom protection plate.
2. The lower box body of the power battery pack as claimed in claim 1, further comprising a fixing bolt, wherein the edge of the bottom guard plate is screwed and fixed with the bottom of the edge beam through the fixing bolt.
3. The lower box body of the power battery pack as claimed in claim 2, further comprising a first sealing ring, wherein the first sealing ring is arranged between the edge of the bottom guard plate and the bottom of the edge beam.
4. The power battery lower box body of claim 1, wherein the box body welding assembly is made of 6-series aluminum through extrusion molding, and the side beams, the cross beams and the longitudinal beams are fixed through MIG and/or TIG welding.
5. The lower box body of the power battery pack as claimed in claim 1, wherein the periphery of the water cooling plate is fixed with the periphery of the bottom of the box body welding assembly by friction stir welding.
6. The power battery pack lower box body according to claim 1, further comprising a sealing rivet nut arranged on the bottom protection plate, wherein the end of the sealing rivet nut penetrates into the water cooling plate from the bottom upwards and abuts against the cross beam.
7. The lower box body of the power battery pack as claimed in claim 6, further comprising a second sealing ring disposed between the sealing rivet nut and the bottom guard plate.
8. The lower box body of the power battery pack as claimed in claim 1, wherein the bottom guard plate is manufactured by using DP 590.
9. The lower box body of the power battery pack as claimed in claim 8, wherein the thickness of the bottom protecting plate is 0.7-1.1 mm.
10. The lower box body of the power battery pack as claimed in claim 1, wherein the welding assembly of the box body is internally provided with a reinforcing rib, and the wall thickness of the welding assembly of the box body is 2.0-2.5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222793853.8U CN218548685U (en) | 2022-10-21 | 2022-10-21 | Lower box body of power battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222793853.8U CN218548685U (en) | 2022-10-21 | 2022-10-21 | Lower box body of power battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218548685U true CN218548685U (en) | 2023-02-28 |
Family
ID=85281162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222793853.8U Active CN218548685U (en) | 2022-10-21 | 2022-10-21 | Lower box body of power battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218548685U (en) |
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2022
- 2022-10-21 CN CN202222793853.8U patent/CN218548685U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 314500 988 Tong Tong Road, Wu Tong Street, Tongxiang, Jiaxing, Zhejiang Patentee after: United New Energy Automobile Co.,Ltd. Address before: 314500 988 Tong Tong Road, Wu Tong Street, Tongxiang, Jiaxing, Zhejiang Patentee before: Hezhong New Energy Vehicle Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A power battery pack lower box Granted publication date: 20230228 Pledgee: Tongxiang Science and Technology Entrepreneurship Service Center Co.,Ltd. Pledgor: United New Energy Automobile Co.,Ltd. Registration number: Y2024330000709 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |