CN106784459A - A kind of lithium ion battery box structure - Google Patents
A kind of lithium ion battery box structure Download PDFInfo
- Publication number
- CN106784459A CN106784459A CN201611059962.XA CN201611059962A CN106784459A CN 106784459 A CN106784459 A CN 106784459A CN 201611059962 A CN201611059962 A CN 201611059962A CN 106784459 A CN106784459 A CN 106784459A
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- Prior art keywords
- bamboo
- layer
- battery case
- lithium ion
- box structure
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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
-
- 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
- H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
- H01M50/24—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention discloses a kind of lithium ion battery box structure, including Battery case, the side wall of Battery case is assembled by buffer board and formed, the base plate of Battery case is made up of bamboo-wood plyboard, the top cover that the top of Battery case is made for macromolecular material, buffer board is made up of elastic rubber layer, metallic plate and amberwood successively inside-out, and the bottom surface of bamboo-wood plyboard is one layer of waterproof layer of bonding, and buffer board, top cover and bamboo-wood plyboard are assembled integrally composition Battery case.The lithium ion battery box structure that use bamboo-wood plyboard of the invention is fabricated by, while battery case deadweight is mitigated, meet requirement of the battery case to material property and structural behaviour, it is durable in use, the corrosion resistance and sealing property of battery case are improve, a large amount of manufacturing costs are saved, makes the manufacture of battery case and using more environmentally friendly, for bamboo lumber opens new application approach, the purposes field of bamboo lumber is enriched.
Description
Technical field
The present invention relates to lithium ion battery case used for electric vehicle equipment field, more particularly to a kind of lithium ion battery case knot
Structure.
Background technology
The existing lithium ion battery case overwhelming majority for using is made up of metal cabinet, so that battery case has just enough intensity
And durability, because metal is vulnerable to electrochemical corrosion, Battery case gets rusty easily corrosion during long-term use, is easily caused
Battery pack in battery case suffers erosion and leaks electricity etc. defect, and then triggers security incident.In addition, when the battery pack in battery case
When there is the fortuitous event of leakage electric leakage, due to operator cannot detailed inner case, when watching and touching battery case, Yi Fa
Raw to get an electric shock or scald accident, its security has much room for improvement.
China possesses very abundant bamboo timber resource, and the existing bamboo wood overwhelming majority applies to car by the form of laminate
In wagon-floor, Production Container and furniture construction base plate industry, bamboo wood is not used widely.Bamboo wood is processed into sheet material
Afterwards, with intensity it is big, hardness is high, lighter in weight, corrosion-resistant, good airproof performance, long service life the features such as, if will be metal
Battery case replaces with bamboo lumber, its weight that can not only mitigate battery case, moreover it is possible to effectively improve the corrosion-resistant of battery case
Property and sealing property, a large amount of manufacturing costs can be saved, make the manufacture of battery case and using more environmentally friendly.
The content of the invention
Goal of the invention of the invention is：For above-mentioned problem, there is provided one kind is using bamboo-wood plyboard manufacture
Into lithium ion battery box structure, mitigate battery case conduct oneself with dignity while, improve battery case corrosion resistance and sealing property, section
About a large amount of manufacturing costs, make the manufacture of battery case and using more environmentally friendly.
The technical solution adopted by the present invention is as follows：A kind of lithium ion battery box structure, including Battery case, Battery case
Side wall is assembled by buffer board and formed, and the base plate of Battery case is made up of bamboo-wood plyboard, and the top of Battery case is macromolecule material
The top cover that material is made, buffer board is made up of elastic rubber layer, metallic plate and amberwood successively inside-out, and bamboo and wood is multiple
The bottom surface of plywood is one layer of waterproof layer of bonding, and buffer board, top cover and bamboo-wood plyboard are assembled integrally composition Battery case.
Due to the setting of said structure, the battery pack being disposed in protection Battery case of elastic rubber layer is prevented
Battery pack collision is impaired, and the setting of amberwood can ensure that buffer board has enough intensity and anti-pressure abilities, make
The Battery case of bamboo and wood can meet use requirement, meanwhile, excellent corrosion resistance and electricity that amberwood has
Insulating properties, can resist the erosion of outside overwhelming majority corrosive substance, Battery case is not corroded by electrochemistry, i.e.,
Make in the case of electric leakage, operator will not also occur electric shock accidents, the security performance enhancing of Battery case, the setting of metallic plate
Act not only as the supporting plate of buffer board, moreover it is possible to improve buffer board sealing, when outside amberwood or
When the breakage of person's elastic rubber slab produces gap, fine and close metallic plate can prevent the further erosion of corrosive liquids, Jin Erti
The high sealing and corrosion resistance of buffer board.The buffer board that elastic rubber layer, metallic plate and amberwood are constituted, no
The structure only with intensity higher, its multilayer also has heat-insulated, shock-absorbing effect, when buffer board is impacted, phenolic aldehyde tree
The fibre structure that fat glued board has can disperse to absorb most energy, and its dependent variable is smaller, has little influence on buffer board
The stability of structure.On the one hand to battery pack damping, protection battery pack exempts from damaged in collision, the opposing party to the bamboo-wood plyboard of setting
The time of tide is received in face when the bottom of Battery case, and bamboo-wood plyboard can play a part of waterproof LP blades, better than existing metal system
Battery case.
Further, in order to preferably give play to sealing, energy absorption performance and the durability of amberwood, phenolic aldehyde tree
Fat glued board is made up of resin impregnating paper, bamboo curtain splint layer and nonwoven layer successively from top to bottom, wherein, resin impregnating
Paper, bamboo curtain splint layer and nonwoven layer are integrally formed by heat pressing process, and the nonwoven layer of amberwood is viscous by bonding agent
Metallic plate is connected on, and the periphery of amberwood is fixedly connected on a metal plate by trip bolt.
In order to further improve the damping performance and sealing property of bamboo-wood plyboard, bamboo-wood plyboard glues successively from top to bottom
Layer of polyurethane and bamboo and wood composite bed are closed, wherein, the outer surface of bamboo and wood composite bed coats one layer of wood shavings plank, in bamboo and wood composite bed
Between if phenolic resin glue is impregnated with by dried layer thin bamboo strips used for weaving piece hot pressing formed.
In order to improve the durability and sealing of bamboo curtain splint, if bamboo curtain splint layer is passed through by the thin bamboo strips used for weaving piece that dried layer is impregnated with phenolic resin glue
Perforation weaved hot-pressing is formed, and wherein the thickness of thin bamboo strips used for weaving piece is 0.5-1.5mm.
Preferably, the thin bamboo strips used for weaving piece perforated weaved hot-pressing that bamboo curtain splint layer is impregnated with phenolic resin glue by two-layer is formed, wherein
The thickness of thin bamboo strips used for weaving piece is 0.8mm.
Preferably, the centre of bamboo and wood composite bed is formed by four layers of thin bamboo strips used for weaving piece hot pressing for being impregnated with phenolic resin glue, wherein
The thickness of thin bamboo strips used for weaving piece is 0.6mm.
Further, the parameter of bamboo curtain splint heat pressing process of the invention needs especially selection, so that obtained phenolic resin is glued
The performances such as intensity, wearability, the elasticity of plate meet design requirement, and heat pressing process generally comprises a hot pressing and secondary hot pressing, one
The pressure of secondary hot pressing is 1.4-1.55MPa, and preferably 1.48MPa, hot pressing time is 30-45s, and the pressure of secondary hot pressing is 2.2-
2.37MPa, temperature is 120-130 DEG C, preferably pressure 2.27MPa, 124 DEG C of temperature.
Preferably, waterproof layer is resin impregnating paper, and it is bonded on bamboo and wood composite bed by heat pressing process.
Preferably, layer of polyurethane is made up of hard polyurethane foam, thickness is 2-8mm.
Preferably, metallic plate is the thick Q235 steel plates compositions of 0.8-1.2mm.
In sum, by adopting the above-described technical solution, the beneficial effects of the invention are as follows：Use bamboo and wood of the invention is answered
The lithium ion battery box structure that plywood is fabricated by, while battery case deadweight is mitigated, meets battery case to material property
With the requirement of structural behaviour, it is durable in use, improve the corrosion resistance and sealing property of battery case, save a large amount of manufacturing costs,
Make the manufacture of battery case and using more environmentally friendly, be that bamboo lumber opens new application approach, enrich the purposes of bamboo lumber
Field.
Brief description of the drawings
Fig. 1 is a kind of lithium ion battery box structure schematic diagram of the invention；
Fig. 2 is lithium ion battery case main view part-structure schematic diagram of the invention；
Fig. 3 is amberwood structural representation of the invention；
Fig. 4 is bamboo-wood plyboard structural representation of the invention.
Marked in figure：1 is Battery case, and 2 is battery pack, and 3 is buffer board, and 4 is elastic rubber layer, and 5 is metallic plate, and 6 are
Amberwood, 601 is resin impregnating paper, and 602 is bamboo curtain splint layer, and 603 is nonwoven layer, and 7 is bamboo-wood plyboard,
701 is layer of polyurethane, and 702 is bamboo and wood composite bed, and 8 is waterproof layer, and 9 is thin bamboo strips used for weaving piece, and 10 is wood shavings plank.
Specific embodiment
Below in conjunction with the accompanying drawings, the present invention is described in detail.
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
As shown in Figures 1 to 4, a kind of lithium ion battery box structure, including Battery case 1, the side wall of Battery case 1 is by delaying
The assembling of punching 3 is formed, and the base plate of Battery case 1 is made up of bamboo-wood plyboard 7, and the top of Battery case 1 is macromolecular material system
Into top cover（It is not drawn into figure）, buffer board 3 is inside-out successively by elastic rubber layer 4, metallic plate 5 and amberwood
6 are constituted, and the bottom surface of bamboo-wood plyboard 7 is one layer of waterproof layer 8 of bonding, and buffer board 3, top cover and bamboo-wood plyboard 7 are assembled integrally
Constitute Battery case 1.
As depicted in figs. 1 and 2, in the present embodiment, elastic rubber layer 4 be disposed to protection Battery case 1 in
Battery pack 2, prevents battery pack 2 from colliding impaired, and settings of amberwood 6 can ensure buffer board 3 with enough strong
Degree and anti-pressure ability, enable the Battery case 1 of bamboo and wood to meet use requirement, meanwhile, it is excellent that amberwood 6 has
Different corrosion resistance and electrical insulating property, can resist the erosion of outside overwhelming majority corrosive substance, Battery case 1 is not received
To the corrosion of electrochemistry, even if in the case of electric leakage, operator will not also occur electric shock accidents, the security of Battery case 1
Can strengthen, the setting of metallic plate 5 acts not only as the supporting plate of buffer board 3, moreover it is possible to the sealing of buffer board 3 is improved, when outer
When the amberwood 6 in portion or the breakage of elastic rubber layer 4 produce gap, fine and close metallic plate 5 can prevent corrosivity
The further erosion of liquid, and then improve the sealing and corrosion resistance of buffer board 3.Elastic rubber layer 4, metallic plate 5 and phenol
The buffer board 3 that urea formaldehyde glued board 6 is constituted, not only with intensity higher, the structure of its multilayer also has heat-insulated, shock-absorbing work
With, when buffer board 3 is impacted, the fibre structure that amberwood 6 has can disperse to absorb most energy,
Its dependent variable is smaller, has little influence on the stability of the structure of buffer board 3.The one side of bamboo-wood plyboard 7 of setting subtracts to battery pack 2
Shake, protection battery pack 2 exempts from damaged in collision, and on the other hand when the time of tide is received in the bottom of Battery case 1, bamboo-wood plyboard 7 can rise
To the effect of waterproof LP blades, better than existing metal Battery case.
As a kind of implementation method, in order to preferably give play to the sealing of amberwood 6, energy absorption performance and resistance to
With property, amberwood 6 is from top to bottom successively by resin impregnating paper 601, bamboo curtain splint layer 602 and the structure of nonwoven layer 603
Into, as shown in figure 3, resin impregnating paper 601, bamboo curtain splint layer 602 and nonwoven layer 603 are integrally formed by heat pressing process, phenol
The nonwoven layer 603 of urea formaldehyde glued board 6 is bonded in metallic plate 5 by bonding agent, and the periphery of amberwood 6 passes through
Trip bolt is fixedly connected on metallic plate 5.
In above-mentioned, top cover is preferably made of ABS material or PC materials, elastic rubber layer 4 can for high elastic rubber,
Thermoplastic elastomer etc., in order to cost-effective, elastic rubber layer 4 is made of waste tire rubber, and waste tire rubber has good
Elastic, electrical insulating property and stability, are highly suitable as the cushion of battery pack well；Metallic plate 5 can for steel plate, aluminium sheet or
Person's magnalium plate etc., preferably with the Q235 stainless steel plates of 0.8-1.2mm, to reduce manufacturing cost.
In order to improve the durability and sealing of bamboo curtain splint, if bamboo curtain splint layer 602 is impregnated with the thin bamboo strips used for weaving of phenolic resin glue by dried layer
The perforated weaved hot-pressing of piece 9 is formed, and wherein the thickness of thin bamboo strips used for weaving piece 9 is 0.5-1.5mm, preferably 1.2mm.
Furthermore, the heat pressing process of bamboo curtain splint layer 602 uses existing process, will dry woven thin bamboo strips used for weaving piece leaching
After stain phenolic resin glue is dried again, through assembly, precompressed, hot pressing after, cut out and obtain final product, wherein, in precompressed, the pressure of precompressed
（Hot pressing）It is 1.4-1.55MPa, preferably 1.48MPa, hot pressing time is 30-45s, and the pressure of secondary hot pressing is 2.2-
2.37MPa, temperature is 120-130 DEG C, preferably pressure 2.27MPa, 124 DEG C of temperature.By bamboo curtain splint obtained in the technological parameter
The density of layer is more than 1.1G/cm3, less than 10%, water absorption rate is less than 10% to moisture content, and its MOR is more than 30N/mm2, quiet bent bullet
Property be not less than 500N/mm2, with excellent combination property, disclosure satisfy that Battery case to the intensity of amberwood, resistance to
The requirement of mill property, the performance such as elasticity, overcome existing amberwood because of thickness of thin the relatively low defect of intensity, improve
The adaptability of amberwood.
Mode is preferably carried out as one kind, bamboo curtain splint layer 602 is impregnated with the perforated of thin bamboo strips used for weaving piece 9 of phenolic resin glue by two-layer
Weaved hot-pressing is formed, and wherein the thickness of thin bamboo strips used for weaving piece 9 is 0.8mm, as shown in Figure 3.
Used as a kind of implementation method, in order to further improve the damping performance and sealing property of bamboo-wood plyboard 7, bamboo and wood is multiple
Plywood 7 bonds layer of polyurethane 701 and bamboo and wood composite bed 702 successively from top to bottom, as shown in figure 4, the appearance of bamboo and wood composite bed 702
Bread covers one layer of wood shavings plank 10, if the centre of bamboo and wood composite bed 702 is impregnated with the hot pressing of thin bamboo strips used for weaving piece 9 of phenolic resin glue by dried layer
Formed, correspondingly, the centre of bamboo and wood composite bed 702 is also to be obtained by above-mentioned heat pressing process, to ensure that bamboo and wood composite bed 702 has
There is combination property well.
Mode is preferably carried out as one kind, the bamboo that the centre of bamboo and wood composite bed 702 is impregnated with phenolic resin glue by four layers
The hot pressing of thin bamboo strip 9 is formed, and wherein the thickness of thin bamboo strips used for weaving piece 9 is 0.6mm.
Mode is preferably carried out as one kind, waterproof layer 8 is resin impregnating paper, and is bonded in bamboo by heat pressing process
On wooden composite bed 702.
Mode is preferably carried out as one kind, layer of polyurethane 701 is made up of hard polyurethane foam, thickness can be 2-8mm, most
It is well 6.5mm.
After tested, when enormous impact force is subjected to, what is be firstly broken is buffering to the Battery case 1 being made of buffer board 3
Coupling part between plate 3, and itself there is no significant change in buffer board 3, furthermore, be subjected to enormous impact force
And the coupling part between buffer board 3 be not destroyed when, amberwood 6 and metallic plate 5 absorb big energy and to shake
Dynamic form releases energy, and after the vibration of generation is through the snubber of elastic rubber layer 4, the impact that battery pack 2 is subject to is greatly reduced,
Battery pack 2 receives protection well, and compared with metal protection board, anticollision coefficient almost maintains an equal level, in terms of thermal insulation, phenol
Urea formaldehyde glued board 6 can scorch that 30min is non-ignitable in 300 DEG C or so of temperature, and the temperature of elastic rubber layer 4 rises not substantially,
The local temperature that amberwood 6 is not scorched rises 5-50 DEG C, and metal protection board is processed in 300 DEG C or so of temperature
Roasting 30min is non-ignitable, and the inside and outside wall temperature difference of protection board less, reaches more than 350 DEG C, and for battery pack, battery core reaches
More than 200 DEG C, then rupture, exothermic phenomenon of largely discharging occurs, or even explodes, therefore, buffer board of the invention 3 every
Hot property is protruded.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, it is all in essence of the invention
Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.
Claims (10)
1. a kind of lithium ion battery box structure, including Battery case, it is characterised in that the side wall of Battery case is assembled by buffer board
Formed, the base plate of Battery case is made up of bamboo-wood plyboard, the top cover that the top of Battery case is made for macromolecular material, buffering
Plate is made up of elastic rubber layer, metallic plate and amberwood successively inside-out, and the bottom surface of bamboo-wood plyboard is bonding
One layer of waterproof layer, buffer board, top cover and bamboo-wood plyboard are assembled integrally composition Battery case.
2. lithium ion battery box structure as claimed in claim 1, it is characterised in that amberwood is from top to bottom successively
It is made up of resin impregnating paper, bamboo curtain splint layer and nonwoven layer, wherein, resin impregnating paper, bamboo curtain splint layer and nonwoven layer are logical
Cross heat pressing process to be integrally formed, the nonwoven layer of amberwood is bonded in metallic plate, and phenolic resin by bonding agent
The periphery of glued board is fixedly connected on a metal plate by trip bolt.
3. lithium ion battery box structure as claimed in claim 2, it is characterised in that bamboo-wood plyboard is bonded successively from top to bottom
Layer of polyurethane and bamboo and wood composite bed, wherein, the outer surface of bamboo and wood composite bed coats one layer of wood shavings plank, the centre of bamboo and wood composite bed
If being formed by the thin bamboo strips used for weaving piece hot pressing that dried layer is impregnated with phenolic resin glue.
4. lithium ion battery box structure as claimed in claim 2, it is characterised in that if bamboo curtain splint layer is impregnated with phenolic aldehyde tree by dried layer
The thin bamboo strips used for weaving piece perforated weaved hot-pressing of fat glue is formed, and wherein the thickness of thin bamboo strips used for weaving piece is 0.5-1.5mm.
5. lithium ion battery box structure as claimed in claim 4, it is characterised in that bamboo curtain splint layer is impregnated with phenolic resin by two-layer
The thin bamboo strips used for weaving piece perforated weaved hot-pressing of glue is formed, and wherein the thickness of thin bamboo strips used for weaving piece is 0.8mm.
6. lithium ion battery box structure as claimed in claim 3, it is characterised in that the centre of bamboo and wood composite bed is by four layers of dipping
The thin bamboo strips used for weaving piece hot pressing for having phenolic resin glue is formed, and wherein the thickness of thin bamboo strips used for weaving piece is 0.6mm.
7. lithium ion battery box structure as claimed in claim 2, it is characterised in that heat pressing process includes a hot pressing and secondary
Hot pressing a, pressure for hot pressing is 1.4-1.55MPa, and hot pressing time is 30-45s, and the pressure of secondary hot pressing is 2.2-
2.37MPa, temperature is 120-130 DEG C.
8. lithium ion battery box structure as claimed in claim 3, it is characterised in that waterproof layer is resin impregnating paper, and
It is bonded on bamboo and wood composite bed by heat pressing process.
9. lithium ion battery box structure as claimed in claim 3, it is characterised in that layer of polyurethane is made up of hard polyurethane foam,
Thickness is 2-8mm.
10. lithium ion battery box structure as claimed in claim 1, it is characterised in that metallic plate is the thick Q235 of 0.8-1.2mm
Steel plate is constituted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611059962.XA CN106784459B (en) | 2016-11-28 | 2016-11-28 | A kind of lithium ion battery box structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611059962.XA CN106784459B (en) | 2016-11-28 | 2016-11-28 | A kind of lithium ion battery box structure |
Publications (2)
| Publication Number | Publication Date |
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| CN106784459A true CN106784459A (en) | 2017-05-31 |
| CN106784459B CN106784459B (en) | 2019-08-09 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107196253A (en) * | 2017-06-21 | 2017-09-22 | 滁州市朝友精密制造有限公司 | A kind of electrical equipment uses junction box |
| CN110473648A (en) * | 2018-07-04 | 2019-11-19 | 中国工程物理研究院核物理与化学研究所 | A kind of modularization spoke volt class isotope battery |
| CN116826324A (en) * | 2023-08-23 | 2023-09-29 | 宁德时代新能源科技股份有限公司 | Cushion, battery cell, battery and electricity utilization device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT523422B8 (en) * | 2020-07-06 | 2022-03-15 | Fill Gmbh | accumulator |
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| CN101157226A (en) * | 2007-11-15 | 2008-04-09 | 胡新华 | Bamboo composite board made of thin bamboo splits piece for container floor |
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| CN107196253A (en) * | 2017-06-21 | 2017-09-22 | 滁州市朝友精密制造有限公司 | A kind of electrical equipment uses junction box |
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| CN116826324A (en) * | 2023-08-23 | 2023-09-29 | 宁德时代新能源科技股份有限公司 | Cushion, battery cell, battery and electricity utilization device |
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| Publication number | Publication date |
|---|---|
| CN106784459B (en) | 2019-08-09 |
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