CN102585360A - Composite plastic, manufacturing method and encapsulation shell, lithium battery and battery pack manufactured by using composite plastic - Google Patents
Composite plastic, manufacturing method and encapsulation shell, lithium battery and battery pack manufactured by using composite plastic Download PDFInfo
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- Y02E60/10—Energy storage using batteries
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Abstract
The invention relates to a composite plastic for manufacturing a lithium ion battery, a preparation method for the composite plastic and the lithium ion battery and a battery pack manufactured by using the composite plastic. The composite plastic mainly comprises the following components in percentage by mass: 30 to 98 percent of composite plastic matrix which comprises one or more lithium ion battery electrolyte corrosion resistant plastic materials, 1 to 50 percent of composite reinforcing filler which comprises one or more mechanical property modification filling materials, and 1 to 50 percent of composite heat conducting filler which comprises one or more heat conducting performance modification filling materials. The invention also provides the preparation method for the composite plastic and the lithium ion battery and the lithium ion battery pack manufactured by using the composite plastic. According to the composite plastic, the preparation method for the composite plastic and the lithium ion battery and the battery pack manufactured by using the composite plastic, high requirements of an encapsulation shell of the lithium ion battery for the technical conditions such as thermal conductivity, mechanical strength, dimensional stability, corrosion resistance, insulating strength, reliability and service life are fully met.
Description
Technical field
The present invention relates to lithium ion battery encapsulation technology field, relate in particular to and a kind ofly be used for composite plastic that lithium ion battery makes, its preparation method and with lithium ion battery encapsulating housing, lithium ion battery and the series of cells of its manufacturing.
Background technology
The encapsulating housing of lithium ion battery is the important component part of lithium ion battery; The lithium ion battery structure housing encapsulation of extensively adopting at present mainly contains three types: one of which; The shell negative electrode lithium ion battery that adopts the steel casing encapsulation to constitute, its two, the anodal lithium ion battery of the shell that adopts the aluminum shell encapsulation to constitute; Its three, the anodal lithium ion battery of the recessive shell that adopts the aluminium plastic composite material encapsulation to constitute.
When the lithium ion battery series connection is constituted series of cells; Owing to have potential difference between the lithium-ion battery shell of each level; When the lithium ion battery that adopts above-mentioned nonisulated shaped shell is connected in groups; Very easily produce the lithium-ion battery shell short circuit between the series connection level, and when constituting the high-voltage battery group, the charged existence operation of casing of lithium ion battery electric shock risk; Therefore must carry out insulation processing to casing of lithium ion battery, satisfy mounting structure, heat radiation, the technical qualification of electric insulation and the aspect requirements such as system engineering safety of assembling process of series of cells.Generally take at present on the metal shell of lithium ion battery coated insulation film mode to handle; Though this method can be improved in groups the electrical insulation properties and the security in when assembling to a certain extent; But because the insulating coating material thinner thickness and and the metal shell of lithium ion battery between have air gap; Thereby have that system's heat transfer efficiency is lower, insulation strength is lower and cracky, be difficult for forming problem such as coatings fully, cause the radiating effect of lithium ion battery group relatively poor, insulation and radiator structure is complicated, energy/volume ratio is low, the electric insulation safety is low, the security of system engineering is low, product and system engineering cost height.
Adopt plastic material to constitute casing of lithium ion battery, can solve the housing Insulation Problems between series of cells series connection level, can solve high-pressure type series of cells system engineering safety-problems, can simplify between battery insulation and radiator structure and reduce the series of cells volume.But because there is corrodibility in lithium-ion battery electrolytes, has the afflux heat effect when discharging and recharging, the airtight technical qualification such as close of cell package needs; Thereby adopt general engineering plastics, can not satisfy the technical requirements of lithium-ion battery shell to aspects such as electrolyte resistance corrodibility, thermal conductivity.And the existing corrosive of anti-lithium-ion battery electrolytes plastics exist that poor thermal conductivity, physical strength are lower, be prone to produce problem such as distortion after the demoulding.
Summary of the invention
Therefore, a purpose of the present invention is to provide a kind of high thermal conductivity composite plastic that lithium ion battery is made that is used for.
Another purpose of the present invention is to provide the preparation method of this composite plastic.
Another purpose of the present invention is to provide the lithium ion battery encapsulating housing made from this composite plastic.
Another purpose of the present invention is to provide the lithium ion battery made from this composite plastic.
A purpose more of the present invention is to provide the lithium ion battery made from this composite plastic to constitute the lithium ion battery group.
For realizing above-mentioned purpose, the present invention provides a kind of composite plastic, and it mainly comprises following ingredients by mass percentage:
Composite plastic matrix 30%～98%, its composition comprise one or more corrosive of anti-lithium-ion battery electrolytes plastic material;
Composite reinforcing filler 1%～50%, its composition comprise one or more mechanical property modification packing material;
Composite heat-conducting filler 1%～50%, its composition comprise one or more heat conductivility modification packing material.
Wherein, by mass percentage, comprise Vestolen PP 7052 0～100%, Vilaterm 0～100% and pvdf 0～100% in the said composite plastic body.
Wherein, by mass percentage, comprise inorganic fibre 0～100%, organic fibre 0～90%, asbestos 0～50% and talcum powder 0～50% in the said composite reinforcing filler.
Wherein, by mass percentage, comprise aluminium nitride AlN 0～100%, aluminum oxide 0～100%, SP 1 0～100%, silicon nitride 0～100%, silit 0～100% and bismuth oxide 0～100% in the said composite heat-conducting filler.
The present invention also provides a kind of preparation method of composite plastic, comprising:
Step 1, adopt one or more corrosive of anti-lithium-ion battery electrolytes plastic material,, obtain composite plastic matrix master batch through drying, batch mixing, extruding pelletization by the preset blending ratio blend; Adopt the corrosive of anti-lithium-ion battery electrolytes Vestolen PP 7052 (Polypropylene; Abbreviation PP), Vilaterm (polyethylene; Abbreviation PE), pvdf (Polyvinylidene fluoride; Be called for short PVDF), through setting, with a kind of plastics or add one or more plastic blends therein and make the composite plastic matrix to material mark, component, proportioning and blending technology; The composite plastic matrix that this step obtains has higher melting adhered property, can directly be used for the parts such as liquid filling hole melten gel plug that lithium-ion battery shell is made in injection moulding;
Step 2 adopts one or more mechanical property modification packing material by the preset blending ratio blend, through batch mixing, oven dry, pulverizing, obtains the composite reinforcing filler; Adopt mechanical property modification packing materials such as inorganic fibre, organic fibre, asbestos, talcum powder; Through setting to each component packing material trade mark, purity, proportioning and blending technology; With a kind of packing material or add one or more packing material blend therein, make the compounded mix that is used for the modification of composite plastic matrix mechanical property;
Step 3, the composite reinforcing filler that composite plastic matrix that step 1 is made and step 2 make are by the preset blending ratio blend, through drying, batch mixing, extruding pelletization, the type that is enhanced composite plastic master batch; In the composite plastic matrix that step 1 makes, add the mechanical property modification compounded mix that step 2 makes, through the setting to blend proportioning and blending technology, blend makes the enhancement type composite plastic; The enhancement type composite plastic matrix that this step obtains has higher physical strength and anti-demoulding creep properties, can directly be used for the parts such as lug bending shaping slice and structure stand that lithium-ion battery shell is made in injection moulding;
Step 4 adopts one or more heat conductivility modification packing material by the preset blending ratio blend, through batch mixing, oven dry, pulverizing, obtains the composite heat-conducting filler; Adopt aluminium nitride AlN (AlN), aluminum oxide (Al2O3), SP 1 (BN), silicon nitride (Si3N4), silit (SiC), bismuth oxide heat conductivility modification packing materials such as (BiO); Through the trade mark, purity, particle diameter, crystal formation, the proportioning of each constituent materials being reached the setting of blending technology; With a kind of packing material or add one or more packing material blend therein, make the composite heat-conducting filler that is used for the heat conductivility modification;
Step 5, the composite heat-conducting filler that enhancement type composite plastic that step 3 is made and step 4 make through drying, batch mixing, extruding pelletization, obtain high heat conduction composite plastic master batch by the preset blending ratio blend; In the enhancement type composite plastic that step 3 makes, add the composite heat-conducting filler that step 4 makes, through setting, process high thermal conductivity composite plastic injection moulding master batch through operations such as drying, batch mixing, extruding pelletizations to blend proportioning and blending technology.
Wherein, by mass percentage, in step 1, said composite plastic matrix comprises Vestolen PP 7052 0～100%, Vilaterm 0～100% and pvdf 0～100%; In step 2, said composite reinforcing filler comprises inorganic fibre 0～100%, organic fibre 0～90%, asbestos 0～50% and talcum powder 0～50%; In step 4, said composite heat-conducting filler comprises aluminium nitride AlN 0～100%, aluminum oxide 0～100%, SP 1 0～100%, silicon nitride 0～100%, silit 0～100% and bismuth oxide 0～100%.
Wherein, by mass percentage, said high heat conduction composite plastic comprises the composite heat-conducting filler 1%～50% that composite plastic matrix 30%～98% that step 1 makes, composite reinforcing filler 1%～50% that step 2 makes and step 4 make.
Composite plastic of the present invention and preparation method thereof; Constitute the composite plastic matrix after adopting a kind of corrosive of anti-lithium-ion battery electrolytes plastics or adding one or more plastic blend modifications therein; In the composite plastic matrix, add strength modified filler and heat conduction modified filler, technical features such as the thermal conductivity of composite plastic matrix, physical strength, demoulding dimensional stability, erosion resistance are carried out modification formation high thermal conductivity composite plastic.
The present invention also provides a kind of usefulness lithium ion battery encapsulating housing that foregoing high thermal conductivity composite plastic is made, and wherein, said lithium ion battery encapsulating housing is processed by said high thermal conductivity composite plastic.Preparing this lithium ion battery encapsulating housing comprises the steps:
Step 1; The high thermal conductivity composite plastic that uses the aforementioned techniques scheme to obtain; On parameter bases such as the thermal conductivity of this material, tensile strength, ultimate compression strength, resistance to impact shock, hardness, flexural strength, Young's modulus, the coefficient of expansion, cure shrinkage, demoulding deformation rate, specific inductivity, anti-arc characteristic; Spend slightly and capsule technology in conjunction with the demoulding of this material, design the encapsulating housing and the associated components of lithium ion battery according to the lithium ion battery technical qualification of setting.
Step 2, according to the technical qualification that step 1 provides, the assembling and the capsule technology of design lithium ion battery.And combine the technical qualification such as molding shrinkage and melting temperature of this material, design and encapsulating housing and associated components injection forming mold, the encapsulating housing assembly tooling of making lithium ion battery.
Step 3 with the injection forming mold that step 2 is made, is made the encapsulating housing and the associated components of lithium ion battery.
The present invention also provides a kind of usefulness lithium ion battery that foregoing high thermal conductivity composite plastic is made, and the encapsulating housing of this lithium ion battery is processed by said high thermal conductivity composite plastic.By the assembling and the capsule technology assembling monomer lithium ion battery of above-mentioned steps 1 design, can obtain adopting the monomer lithium ion battery of high thermal conductivity composite plastic housing encapsulation.
The present invention also provides a kind of usefulness lithium ion battery group that the monomer lithium ion battery that foregoing high thermal conductivity composite plastic is made constitutes; Wherein, the encapsulating housing of forming the monomer lithium ion battery of said lithium ion battery group is processed by said high thermal conductivity composite plastic.Adopt the monomer lithium ion battery series connection of high thermal conductivity composite plastic housing encapsulation to constitute series of cells; Because the housing of lithium ion battery has adopted the high thermal conductivity composite plastic manufacturing of insulated type; Thereby can the monomer lithium ion battery be directly installed on the structure stand that the metallic substance of high thermal conductivity processes, can solve simplification block structure, high-efficiency thermal conduction, thermal balance and heat radiation, electric insulation, the system engineering process safety-problems of series of cells thus.
In sum; The present invention adopts a kind of corrosive of anti-lithium-ion battery electrolytes plastics or adds another kind of or multiple plastics therein and constitutes the composite plastic matrix; In the composite plastic matrix, add strength modified filler and heat conduction modified filler; Technical features such as the thermal conductivity of plastics, physical strength, demoulding dimensional stability, erosion resistance are carried out modification constitute high thermal conductivity composite plastic of the present invention, the present invention also adopts this high thermal conductivity composite plastic to make insulation-encapsulated housing and the corresponding lithium ion battery and the lithium ion battery group of lithium ion battery.
High thermal conductivity composite plastic of the present invention and method for making and have following beneficial effect with encapsulating housing, lithium ion battery and the lithium ion battery group of its manufacturing.
High thermal conductivity composite plastic of the present invention and preparation method thereof has fully satisfied the high request of lithium ion battery encapsulating housing to technical qualification such as thermal conductivity, physical strength, dimensional stability, erosion resistance, insulation strength, safety and life-spans.And; Use this preparation method to remove the high thermal conductivity composite plastic that finally makes; Resulting composite plastic matrix and enhancement type composite plastic matrix can directly be used for making the corresponding component of lithium-ion battery shell respectively in the preparation process; Satisfied the demand of lithium-ion battery shell different piece with single production technique, simplified production process and reduced cost material.
Adopt high thermal conductivity composite plastic of the present invention; Through processes such as structure design, technological design, injection moulding, forming process; The lithium ion battery encapsulating housing that makes has solved high efficient heat problem, insulation strength problem, problems of mechanical strength, the electrolyte resistance corrosion problems of lithium ion battery encapsulating housing and associated components.
The lithium ion battery that the encapsulating housing that uses high heat conduction composite plastic of the present invention to process encapsulates; And and then the lithium ion battery group of utilizing this lithium ion battery to constitute, can solve Insulation Problems between the monomer lithium ion battery of heat conduction efficiency and heat dissipation problem, solution series of cells of series of cells.In groups the time, can lithium ion battery be directly installed in the metal construction of high thermal conductivity, improve system's thermal conduction and radiating efficiency, the heat radiation of simplification series of cells and electric insulation structure, the battery pack power/volume ratio that improves.And the assembling process in the high-pressure type series of cells can reduce the insulating process equipment and significantly reduce the system engineering security risk that assembling is produced, and reduces production costs and enhances productivity.
Description of drawings
Below in conjunction with accompanying drawing, describe in detail through specific embodiments of the invention, will make technical scheme of the present invention and other beneficial effects obvious.
In the accompanying drawing,
Fig. 1 is the preparing method's of composite plastic of the present invention schema;
Fig. 2 is the schema of preparing method's one preferred embodiment of composite plastic of the present invention;
Fig. 3 A is the external structure synoptic diagram of lithium ion battery one preferred embodiment of employing composite plastic manufacturing of the present invention;
Fig. 3 B is the blast structural representation of lithium ion battery shown in Fig. 3 A;
Fig. 4 A adopts the formation of lithium ion battery shown in Fig. 3 A for the external structure synoptic diagram of lithium ion battery group one preferred embodiment of employing composite plastic manufacturing of the present invention, this lithium ion battery group;
Fig. 4 B is the blast structural representation of lithium ion battery group shown in Fig. 4 A.
Embodiment
In conjunction with Fig. 1 and Fig. 2, Fig. 1 is the preparing method's of composite plastic of the present invention schema, and Fig. 2 be this preparing method's one the schema based on the preferred embodiment of Vestolen PP 7052 formation composite plastic matrix.
Step 1: with Vestolen PP 7052 (PP), Vilaterm (PE), pvdf (PVDF), expanding material, the blend of according to the form below proportioning through being total to operations such as refining and extruding pelletization, obtains the composite plastic matrix that constitutes based on Vestolen PP 7052.The composite plastic matrix that this step obtains has higher dielectric constant, high toughness, higher melting adhered property and lower cost, can directly be used for the parts such as liquid filling hole melten gel plug that lithium-ion battery shell is made in injection moulding.
| Vestolen PP 7052 | Pvdf | Vilaterm | Expanding material |
| 71％ | 14％ | 11％ | 4％ |
Add pvdf by last table proportioning, can obviously improve the specific inductivity of the composite plastic matrix that constitutes based on Vestolen PP 7052, the specific inductivity of the composite plastic matrix permittivity ratio virgin pp after the blend promotes about 60%.Add Vilaterm by last table proportioning, can obviously improve the toughness and the injection moulding processing fluidity of the composite plastic matrix that constitutes based on Vestolen PP 7052, the shock resistance of the composite plastic matrix after the blend promotes about 50% than the shock resistance of virgin pp.Polypropylene grafted expanding material adopts maleic anhydride (Maleic anhydride).Electromagnetic Dynamic mixing extruder mixing 11min extruding pelletization under 160 ℃ is adopted in the blend preparation of composite plastic matrix.
Step 2: with materials such as spun glass, asbestos, talcum powder, the blend of according to the form below proportioning through operations such as batch mixing and oven dry, obtains the composite reinforcing filler.Universal stirrer batch mixing is adopted in composite reinforcing filler blend preparation, adopts universal baking oven to dry 2 hours down for 100 ℃, and coupling agent adopts silane coupling agent KH-792.
| Spun glass | Asbestos | Talcum powder | Coupling agent |
| 89％ | 3％ | 7％ | 1％ |
Step 3: composite plastic matrix and composite reinforcing filler are pressed composite plastic (89%), the blend of composite reinforcing filler (11%) proportioning, through drying, batch mixing, extruding pelletization, the type that is enhanced composite plastic master batch.The enhancement type composite plastic matrix that this step obtains has higher physical strength and anti-demoulding creep properties, can directly be used for the parts such as lug bending shaping slice and structure stand that lithium-ion battery shell is made in injection moulding.Universal stirrer batch mixing is adopted in the preparation of enhancement type composite plastic master batch, adopts the granulation of all-purpose double-screw forcing machine.
Step 4: with materials such as aluminium nitride AlN (AlN), aluminum oxide (Al2O3), SP 1 (BN), silicon nitride (Si3N4), silit (SiC), bismuth oxide (BiO), coupling agents, the blend of according to the form below proportioning through operations such as batch mixing, oven dry, obtains the composite heat-conducting filler.Universal stirrer batch mixing is adopted in the preparation of composite heat-conducting filler, adopts universal baking oven to dry 4 hours down for 100 ℃, and coupling agent adopts titanate coupling agent NDZ-201, silane coupling agent kh560.
| Aluminium nitride AlN | Aluminum oxide | SP 1 | Silicon nitride | Silit | Bismuth | Coupling agent | |
| 31％ | 1％ | 5％ | 7％ | 11％ | 43％ | 2％ |
Step 5:,,, obtain high heat conduction composite plastic master batch through oven dry, batch mixing, extruding pelletization by enhancement type composite plastic (79%), the blend of composite heat-conducting filler (21%) proportioning with enhancement type composite plastic matrix master batch and composite heat-conducting filler.The high heat conduction composite plastic that this step obtains, thermal conductivity can reach 4W/mK, can directly be used for the parts such as insulating heat-conductive body skin that lithium ion battery is made in injection moulding.Universal stirrer batch mixing, universal oven for drying, the granulation of all-purpose double-screw forcing machine are adopted in high heat conduction composite plastic master batch preparation.
Referring to Fig. 3 A and Fig. 3 B, Fig. 3 A is the external structure synoptic diagram of lithium ion battery one preferred embodiment of employing high heat conduction composite plastic manufacturing of the present invention, and Fig. 3 B is the blast structural representation of lithium ion battery shown in Fig. 3 A.The lithium ion battery 10 of this preferred embodiment adopts high thermal conductivity composite plastic of the present invention to process encapsulating housing and encapsulates; This lithium ion battery 10 comprises the doublet of being made up of 4 flat coiling lithium-ion electric cores 19, last body skin 11, lower housing body 12, body skin loam cake 13, positive electrical pole 14, negative electricity pole 15, liquid filling hole fused plug 16, anodal rivet welding electrode slice 17, negative pole rivet welding electrode slice 18.Body skin loam cake 13 is provided with injecting electrolytic solution hole 131 and explosion trap 132, and lithium-ion electric core is provided with lithium-ion electric core positive pole ear 191 and lithium-ion electric core negative lug 192.
Anodal rivet welding electrode slice 17 and negative pole rivet welding electrode slice 18 embedded respectively on the positive electrical pole 14 that is installed in body skin loam cake 13 and the negative electricity pole 15, and adopt press revolve the riveter skill with positive electrical pole 14 and anodal rivet welding electrode slice 17, negative electricity pole 15 and negative pole rivet welding electrode slice 18 respectively pressings rivet.Weld through resistance welding with lithium-ion electric core positive pole ear 191 adopting with the anodal rivet welding electrode slice 17 of lithium-ion electric core positive pole ear 191 with material; Weld through resistance welding with lithium-ion electric core negative lug 192 adopting, and will weld the electrode of accomplishing and use the bending tool folding to be the S type with the negative pole rivet welding electrode slice 18 of lithium-ion electric core negative lug 192 with material.Last body skin 11, lower housing body 12 adopt ultrasonic welding or hot plate weldprocedure to be welded as a whole.Adopt ultrasonic welding or hot plate weldprocedure, the welding body and the body skin loam cake 13 of last body skin 11 and lower housing body 12 is welded as a whole.Accomplish through the injecting electrolytic solution hole on the body skin loam cake 13 131 and to take out negative pressure, perfusion electrolytic solution, change into, after the operation such as check; Adopt ultrasonic welding or hot jet welding technology; Liquid filling hole fused plug 16 and body skin loam cake 13 are welded as a whole, so far accomplish the packaging technology process of this preferred embodiment lithium ion battery 10.
Referring to Fig. 4 A and Fig. 4 B; Fig. 4 A is the external structure synoptic diagram of lithium ion battery group one preferred embodiment of employing composite plastic manufacturing of the present invention; This lithium ion battery group adopts the formation of lithium ion battery shown in Fig. 3 A, and Fig. 4 B is the blast structural representation of lithium ion battery group shown in Fig. 4 A.
The lithium ion battery group 30 that adopts lithium ion battery shown in Fig. 3 A 10 to constitute comprises lithium ion battery 10, series of cells loam cake 31, control and display unit 32, control and management system 33, mounting bracket 34, middle casing 35, radiator element 36, series of cells bottom 37.Because the body skin of lithium ion battery 10 adopts high heat conduction composite plastic to process, and have good insulation performance property, so middle casing 35 can adopt aluminium alloy extrusions to process.Series of cells 30 is when high magnification charging or high-multiplying power discharge; The lithium ion battery 10 inner heats that produce; The lithium-ion battery shell of processing through high heat conduction composite plastic conducts to the middle casing 35 that aluminium extruded section is processed, and realizes the high efficiency and heat radiation purpose through middle casing 35 and the heat exchange of series of cells extraneous air.
The present invention adopts the high thermal conductivity composite plastic to process the monomer lithium ion battery of housing encapsulation; Compare with the monomer lithium ion battery that adopts steel, aluminium matter or the encapsulation of aluminium plastic composite material housing, have that the body skin insulation strength is high, a material and the technology cost is low, structure and advantages such as moulding process is simple, the charged maintenance performance of finished product is good, volume production high conformity.
The series of cells that the monomer lithium ion battery that adopts high thermal conductivity composite plastic of the present invention to process the housing encapsulation constitutes; Compare with the series of cells that the monomer lithium ion battery that adopts steel, aluminium matter or the encapsulation of aluminium plastic composite material housing constitutes; Heat conduction path is become insulation shell → high conductive structure by nonisulated housing → air gap → insulation-encapsulated → high conductive structure, have need not between the monomer lithium ion battery that insulation processing, heat conduction efficiency are high, the security of system engineering is good, compact construction, technology simply reach cost low, be beneficial to advantages such as modularization and stdn.4 parallelly connected 10Ah electricity cores adopting the same terms are assemblied in square aluminum matter body skin and are assemblied among the grouping charging and discharging contrast experiment of square high thermal conductivity composite plastic body skin, and the temperature difference is than on average low 2.2 ℃ of the temperature difference between electric in-core portion that adopts the aluminum shell body and series of cells scatterer between the electric in-core portion of employing high thermal conductivity composite plastic body skin and series of cells scatterer.
In sum, composite plastic of the present invention and preparation method thereof has fully satisfied the high request of lithium ion battery encapsulating housing to technical qualification such as thermal conductivity, physical strength, dimensional stability, erosion resistance, insulation strength, safety and life-spans.And; Use this preparation method to remove the composite plastic that finally makes; Resulting composite plastic matrix and enhancement type composite plastic matrix can directly be used for making the corresponding component of lithium-ion battery shell respectively in the preparation process; Satisfied the demand of lithium-ion battery shell different piece with single production technique, simplified production process and reduced cost material.
Adopt high thermal conductivity composite plastic of the present invention; Through processes such as structure design, injection moulding, forming process; The lithium ion battery encapsulating housing that makes has solved high efficient heat problem, insulation strength problem, problems of mechanical strength, the electrolyte resistance corrosion problems of lithium ion battery encapsulating housing and associated components.
The lithium ion battery that the encapsulating housing that uses high heat conduction composite plastic of the present invention to process encapsulates; And and then the lithium ion battery group of utilizing this lithium ion battery to constitute, can solve Insulation Problems between the cell of heat conduction efficiency and heat dissipation problem, solution series of cells of series of cells, solve the system engineering safety-problems of series of cells.In groups the time, can the monomer lithium ion battery be directly installed in the metal construction of high thermal conductivity, improve system's thermal conduction and radiating efficiency, raising battery pack power/volume ratio, reduce the battery pack structure cost.And the assembling process in the high-pressure type series of cells can reduce the insulating process equipment and significantly reduce the system engineering security risk that assembling is produced, and reduces production costs and enhances productivity.
The above; For the person of ordinary skill of the art; Can make other various corresponding changes and distortion according to technical scheme of the present invention and technical conceive, and all these changes and distortion all should belong to the protection domain of accompanying Claim of the present invention.
Claims (10)
1. a composite plastic is characterized in that, comprises following ingredients by mass percentage:
Composite plastic matrix 30%～98%, its composition comprise one or more corrosive of anti-lithium-ion battery electrolytes plastic material;
Composite reinforcing filler 1%～50%, its composition comprise one or more mechanical property modification packing material;
Composite heat-conducting filler 1%～50%, its composition comprise one or more heat conductivility modification packing material.
2. composite plastic as claimed in claim 1 is characterized in that, by mass percentage, comprises Vestolen PP 7052 0～100%, Vilaterm 0～100% and pvdf 0～100% in the said composite plastic body.
3. composite plastic as claimed in claim 1 is characterized in that, by mass percentage, comprises inorganic fibre 0～100%, organic fibre 0～90%, asbestos 0～50% and talcum powder 0～50% in the said composite reinforcing filler.
4. composite plastic as claimed in claim 1; It is characterized in that; By mass percentage, comprise aluminium nitride AlN 0～100%, aluminum oxide 0～100%, SP 1 0～100%, silicon nitride 0～100%, silit 0～100% and bismuth oxide 0～100% in the said composite heat-conducting filler.
5. the preparation method of a composite plastic is characterized in that, comprising:
Step 1, adopt one or more corrosive of anti-lithium-ion battery electrolytes plastic material,, obtain composite plastic matrix master batch through drying, batch mixing, extruding pelletization by the preset blending ratio blend;
Step 2 adopts one or more mechanical property modification packing material by the preset blending ratio blend, through batch mixing, oven dry, pulverizing, obtains the composite reinforcing filler;
Step 3, the composite reinforcing filler that composite plastic matrix that step 1 is made and step 2 make are by the preset blending ratio blend, through drying, batch mixing, extruding pelletization, the type that is enhanced composite plastic master batch;
Step 4 adopts one or more heat conductivility modification packing material by the preset blending ratio blend, through batch mixing, oven dry, pulverizing, obtains the composite heat-conducting filler;
Step 5, the composite heat-conducting filler that enhancement type composite plastic that step 3 is made and step 4 make through drying, batch mixing, extruding pelletization, obtain high heat conduction composite plastic master batch by the preset blending ratio blend.
6. the preparation method of composite plastic as claimed in claim 5 is characterized in that, by mass percentage, in step 1, said composite plastic body comprises Vestolen PP 7052 0～100%, Vilaterm 0～100% and pvdf 0～100%; In step 2, said composite reinforcing filler comprises inorganic fibre 0～100%, organic fibre 0～90%, asbestos 0～50% and talcum powder 0～50%; In step 4, said composite heat-conducting filler comprises aluminium nitride AlN 0～100%, aluminum oxide 0～100%, SP 1 0～100%, silicon nitride 0～100%, silit 0～100% and bismuth oxide 0～100%.
7. the preparation method of composite plastic as claimed in claim 5; It is characterized in that; By mass percentage, said high heat conduction composite plastic comprises the composite heat-conducting filler 1%～50% that composite plastic matrix 30%～98% that step 1 makes, composite reinforcing filler 1%～50% that step 2 makes and step 4 make.
8. a lithium ion battery encapsulating housing made from composite plastic as claimed in claim 1 is characterized in that said lithium ion battery encapsulating housing is processed by said composite plastic.
9. a lithium ion battery made from composite plastic as claimed in claim 1 is characterized in that the encapsulating housing of said lithium ion battery is processed by said composite plastic.
10. the lithium ion battery group that the lithium ion battery made from composite plastic as claimed in claim 1 constitutes is characterized in that, forms the encapsulating housing of the lithium ion battery of said lithium ion battery group and is processed by said composite plastic.
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN106009175A (en) * | 2016-06-28 | 2016-10-12 | 华蓥市高科龙电子科技有限公司 | Camera encapsulation material |
| CN106543551A (en) * | 2015-09-16 | 2017-03-29 | 天津中聚新能源科技有限公司 | A kind of lithium ion battery plastic casing, lithium ion battery and its manufacture method |
| CN107819170A (en) * | 2017-11-10 | 2018-03-20 | 苏州格瑞动力电源科技有限公司 | Lithium-ion battery module with cooling function |
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| CN109980131A (en) * | 2019-03-13 | 2019-07-05 | 欣旺达电动汽车电池有限公司 | A kind of lithium ion high thermal conductivity insulating film and preparation method thereof |
| CN111261972A (en) * | 2018-12-03 | 2020-06-09 | 富尔西亚排气系统公司 | Storage battery and corresponding thermal control element |
| CN111900273A (en) * | 2020-07-16 | 2020-11-06 | 惠州市吉昀精密部件有限公司 | Heat-dissipation waterproof composite lithium ion battery shell material and preparation method thereof |
| CN112151905A (en) * | 2019-06-28 | 2020-12-29 | 陈鸿文 | High-stability heat-dissipation battery pack structure |
| JPWO2019187313A1 (en) * | 2018-03-30 | 2021-03-25 | 三洋電機株式会社 | Power supply device and electric vehicle and power storage device equipped with this power supply device |
| CN113832776A (en) * | 2021-08-13 | 2021-12-24 | 江苏劲源新能源科技有限公司 | Highland barley paper for lithium battery packaging and preparation method thereof |
| CN114270605A (en) * | 2019-08-14 | 2022-04-01 | 卡尔·弗罗伊登伯格公司 | Energy storage system |
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| CN106543551A (en) * | 2015-09-16 | 2017-03-29 | 天津中聚新能源科技有限公司 | A kind of lithium ion battery plastic casing, lithium ion battery and its manufacture method |
| CN106009175A (en) * | 2016-06-28 | 2016-10-12 | 华蓥市高科龙电子科技有限公司 | Camera encapsulation material |
| CN105906945A (en) * | 2016-07-01 | 2016-08-31 | 山东珠峰车业有限公司 | Battery box of oil-electric hybrid-power four-wheeler and application of battery box |
| CN106440907B (en) * | 2016-09-08 | 2019-05-10 | 广东申菱环境系统股份有限公司 | The production method of composition metal injection molding heat-exchanger rig |
| CN107819170A (en) * | 2017-11-10 | 2018-03-20 | 苏州格瑞动力电源科技有限公司 | Lithium-ion battery module with cooling function |
| JP7326250B2 (en) | 2018-03-30 | 2023-08-15 | 三洋電機株式会社 | Power supply device and electric vehicle and power storage device equipped with this power supply device |
| US11757144B2 (en) * | 2018-03-30 | 2023-09-12 | Sanyo Electric Co., Ltd. | Power supply device, electric vehicle provided with said power supply device, and electricity-storage device |
| JPWO2019187313A1 (en) * | 2018-03-30 | 2021-03-25 | 三洋電機株式会社 | Power supply device and electric vehicle and power storage device equipped with this power supply device |
| US20210091428A1 (en) * | 2018-03-30 | 2021-03-25 | Sanyo Electric Co., Ltd. | Power supply device, electric vehicle provided with said power supply device, and electricity-storage device |
| CN111261972A (en) * | 2018-12-03 | 2020-06-09 | 富尔西亚排气系统公司 | Storage battery and corresponding thermal control element |
| CN109980131A (en) * | 2019-03-13 | 2019-07-05 | 欣旺达电动汽车电池有限公司 | A kind of lithium ion high thermal conductivity insulating film and preparation method thereof |
| CN112151905A (en) * | 2019-06-28 | 2020-12-29 | 陈鸿文 | High-stability heat-dissipation battery pack structure |
| CN114270605A (en) * | 2019-08-14 | 2022-04-01 | 卡尔·弗罗伊登伯格公司 | Energy storage system |
| CN111900273B (en) * | 2020-07-16 | 2022-09-23 | 惠州市吉昀精密部件有限公司 | Heat-dissipation waterproof composite lithium ion battery shell material and preparation method thereof |
| CN111900273A (en) * | 2020-07-16 | 2020-11-06 | 惠州市吉昀精密部件有限公司 | Heat-dissipation waterproof composite lithium ion battery shell material and preparation method thereof |
| CN113832776A (en) * | 2021-08-13 | 2021-12-24 | 江苏劲源新能源科技有限公司 | Highland barley paper for lithium battery packaging and preparation method thereof |
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