CN108172713A - A kind of light-weight electric automobile battery system and preparation method thereof - Google Patents
A kind of light-weight electric automobile battery system and preparation method thereof Download PDFInfo
- Publication number
- CN108172713A CN108172713A CN201711412934.6A CN201711412934A CN108172713A CN 108172713 A CN108172713 A CN 108172713A CN 201711412934 A CN201711412934 A CN 201711412934A CN 108172713 A CN108172713 A CN 108172713A
- Authority
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- China
- Prior art keywords
- battery pack
- lower housing
- battery
- upper shell
- electric automobile
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D99/00—Subject matter not provided for in other groups of this subclass
- B29D99/006—Producing casings, e.g. accumulator cases
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The invention discloses a kind of light-weight electric automobile battery systems and preparation method thereof, battery system includes battery pack upper shell and battery pack lower housing, the battery pack upper shell uses fiber glass reinforced polypropylene thermoplastic composite, and the battery pack lower housing is molded using cast aluminium alloy gold.The reduction of complete vehicle quality is realized by the loss of weight of two key components and parts of middle battery pack upper shell and battery pack lower housing to battery system, so as to improve the energy density of battery system, make the course continuation mileage of vehicle further increase, indirectly realize the target of energy saving, emission reduction, environmental protection；And reasonable in design, safety and stability is reliable.
Description
Technical field
The present invention relates to batteries of electric automobile technical field, more particularly, to a kind of light-weight electric automobile battery system and
Its production method.
Background technology
As effective energy saving means, automotive light weight technology technology have become automobile industry development important subject it
One.Automotive light weight technology be national energy-saving emission reduction strategy there is an urgent need to and Automobile Enterprises or even the whole industry improve product core
The current demand of competitiveness.New-energy automobile is constantly subjected to lasting concern as the direction of automobile industry future development.
An important component of the battery system as new-energy automobile refers to and provides energy for the driving to electric vehicle
A kind of energy accumulating device of amount, is made of one or more battery packet and battery management (control) system.Due to battery system
System is installed on movable vehicle, and the use of battery system can encounter different applying working conditions, the integral arrangement of battery system
The safety of design, reliability are critically important design reference factors.Battery system is a complicated engineering technology, while electricity
Cell system weight proportion shared in new energy vehicle is again larger, reaches 20%~30% under normal circumstances.So battery system
Lightweight Technology development it is imperative.
Electric vehicle battery system includes battery management system, battery high voltage control unit, battery modules, battery pack upper casing
Body, battery pack lower housing, high-pressure insert, low pressure plug-in unit, low voltage wiring harness, connecting copper bar etc.；Wherein, battery pack upper shell and battery
The weight proportion of battery system shared by packet lower housing is larger up to 30% and the problem of battery system light-weight design.
The metal plate punching technique that traditional battery pack upper shell uses, since the drawing height of battery pack upper shell is larger,
More than 300mm generally is likely to be breached, so moulding process is complex, and easy the defects of generating cracking, fold, plucking, this
A little defect some are very concealed, the use of generally visual etc. conventional means are difficult to find, but these defects are for battery system
It is very fatal, seal failure can be caused, once liquid enters the safety that battery system can be seriously affected inside battery system.Traditional
Battery pack lower housing uses metal plate punching welding procedure, since the heat that welding generates is larger, easily causes part temperature distortion,
It causes product size overproof simultaneously, influences the assembling of battery modules.Some common weld defects seriously affect battery peace simultaneously
Entirely, such as stomata, slag inclusion, burn-through, weld crack.These defects are likely to cause the seal failure of battery system.
Invention content
In view of the shortcomings of the prior art, the technical problems to be solved by the invention are to provide a kind of light-weight electric automobile battery
System and preparation method thereof, to reach the light-weighted purpose of battery system.
In order to solve the above-mentioned technical problem, the technical solution adopted in the present invention is：
A kind of light-weight electric automobile battery system, including battery pack upper shell and battery pack lower housing, the battery pack
Upper shell uses fiber glass reinforced polypropylene thermoplastic composite, and the battery pack lower housing is molded using cast aluminium alloy gold.
Length of Glass Fiber in the battery pack upper shell is more than 25mm.
The density of the battery pack upper shell is less than 1.2g/cm3。
The battery pack lower housing uses low pressure casting aluminum alloy technological forming.
The density of the battery pack lower housing is less than 2.7g/cm3。
A kind of battery pack upper shell production method in light-weight electric automobile battery system, includes the following steps：
(1) polypropylene feeding；
(2) single order dual-screw-stem machine melts, and by the rotation of double screw extruder, drives material movement, makes storeroom friction
Heat is generated, it is final to melt；
(3) second order dual-screw-stem machine mixture, by glass together with polypropylene proportionally mixture；
(4) quantitative cut-out ensures material into the weight of mold；
(5) heat preservation conveying ensures the temperature-controllable that material enters before mold；
(6) mold be molded, by hydraulic press to convey come block be molded, mold is opened in pressurize afterwards for a period of time；
(7) pickup post-processes.
A kind of battery pack lower housing production method in light-weight electric automobile battery system, includes the following steps：
(1) aluminium ingot and auxiliary material are put into smelting furnace, carry out raw material dissolving；
(2) aluminum anodizing；
(3) battery pack lower housing shape casting；
(4) die adjustment shape of product size is opened in hot shaping；
(5) product in mold is taken out, the excision of unwanted part, is polished and ball blast；
(6) mounting surface and hole position working process.
In the battery pack lower housing production method step (3), in the sealing container equipped with molten aluminum, it is passed through dry pressure
Contracting air is acted on the liquid aluminum for keeping certain pouring temperature, causes the pressure with cavity in casting die in sealing container
Difference makes molten aluminum rise under the action of gas pressure along stalk, stably enters cavity by cast gate, and increase pressure simultaneously
The gas pressure on liquid level in smelting furnace is kept, makes the crystallization and freezing under certain pressure effect of the molten aluminum in mold cavity.
In the battery pack lower housing production method after step (6), battery pack lower housing is carried out at the electrophoresis of surface
Reason.
Compared with prior art, the present invention it has the following advantages：
By the loss of weight of two key components and parts of middle battery pack upper shell and battery pack lower housing to battery system come real
The reduction of existing complete vehicle quality, so as to improve the energy density of battery system, makes the course continuation mileage of vehicle further increase, indirectly
The target for realizing energy saving, emission reduction, environmental protection；And reasonable in design, safety and stability is reliable.
Description of the drawings
The content to this specification expressed by each width attached drawing and the label in figure are briefly described below：
Fig. 1 is battery pack upper shell schematic diagram of the present invention.
Fig. 2 is battery pack lower housing schematic diagram one of the present invention.
Fig. 3 is battery pack lower housing schematic diagram two of the present invention.
Fig. 4 is battery pack lower housing schematic diagram three of the present invention.
Fig. 5 is mounted on schematic diagram one in battery pack lower housing for battery modules of the present invention.
Fig. 6 is mounted on schematic diagram two in battery pack lower housing for battery modules of the present invention.
Fig. 7 is mounted on schematic diagram three in battery pack lower housing for battery modules of the present invention.
In figure：
1-1. battery pack upper shells upper surface；1-2. battery pack service switch mounting hole groups；1-3. battery pack upper shell methods
Blue face；1-4. battery pack upper casing body front surfaces；1-5. battery pack upper casing body side surfaces；
2-1 is to 2-10. battery pack vehicle mounting holes；2-11. battery packs connect High voltage output plug-in unit mounting hole group with vehicle；
2-12. battery packs connect fast charge plug-in unit mounting hole group with vehicle；2-13. battery packs connect trickle charge plug-in unit mounting hole group with vehicle；
2-14. battery packs and vehicle connecting communication plug-in unit mounting hole；2-15. battery high voltage control unit mounting hole groups；2-16. battery pack
Lower housing sealing flange face；2-17. battery management unit mounting hole groups；2-18. battery modules unit；
3-1. battery modules；3-2. Manual maintenance switchs and its fixing bracket；3-3. battery high voltage control units；It is 3-4. electric
Pond manages system；3-5. connecting copper bar.
Specific embodiment
Below against attached drawing, by the description of the embodiment, making to the specific embodiment of the present invention further details of
Explanation.
As shown in Figures 1 to 7, light-weight electric automobile battery system, including battery pack upper shell, battery pack lower casing
Body, battery modules 3-1, battery high voltage control unit 3-3, battery management system 3-4, Manual maintenance switch and its fixing bracket 3-
2nd, high-pressure insert, low pressure plug-in unit, low voltage wiring harness and connecting copper bar 3-5.
Battery pack upper shell uses fiber glass reinforced polypropylene thermoplastic composite, and battery pack lower housing is closed using casting aluminium
Gold molding.It is realized by the loss of weight of two key components and parts of middle battery pack upper shell and battery pack lower housing to battery system
The reduction of complete vehicle quality so as to improve the energy density of battery system, makes the course continuation mileage of vehicle further increase, indirectly
Realize the target of energy saving, emission reduction, environmental protection.
Battery pack upper shell is the key components and parts of battery system, due to battery to working environment, temperature it is more demanding.
Battery pack upper shell is assembled together and can be effectively sealed with the cooperation of battery pack lower housing, and battery system of the invention is prevented
Dirt waterproofing grade can reach IP67 requirements.
Battery pack upper shell uses long glass fiber-reinforced polypropylene (PP) thermoplastic composite, possesses good toughness, battery pack
Length of Glass Fiber in upper shell is more than 25mm, and intensity is high, the density of battery pack upper shell is less than 1.2g/cm3Product subtracts after molding
Weight effect reaches more than 40%, and material recoverable, cost advantage are apparent.
The production method of battery pack upper shell：
1st, modified polypropene (PP) feeding；
2nd, continuous weight-loss type weighing can improve the precision of charging；
3rd, single order dual-screw-stem machine melts, and by the rotation of double screw extruder, drives material movement, makes storeroom friction production
Heat amount, it is final to melt；
4th, second order dual-screw-stem machine mixture, by roving glass fiber together with modified polypropene proportionally mixture；
5th, quantitative cut-out ensures material into the weight of mold；
6th, heat preservation conveying ensures the temperature-controllable that material enters before mold；
7th, mold be molded, by 1000T hydraulic presses to convey come block be molded, mould is opened in pressurize afterwards for a period of time
Tool；
8th, pickup post-processes, and part taking-up is processed some Appearance quality defects, such as burr.By some
Difficult molding hole, is cut into each mounting hole in mold after being fixed by fixture.
Battery pack upper shell uses long glass fiber-reinforced polypropylene (PP) thermoplastic composite, and fibre length is longer can be bright
The aobvious mechanical property for improving battery pack upper shell；Rigidity, the intensity of battery pack upper shell are higher, fully meet the performance of battery pack
And safety requirements；Battery pack upper shell creep resistance improves, good stability of the dimension, and parts-moulding precision is high；Battery pack upper casing
Body superior fatigue resistance；Size and stability of material of the battery pack upper shell in high temperature and wet environment are more preferable.
Battery pack lower casing housing is the key components and parts of battery system, due to requirement of the battery to working environment, temperature compared with
It is high.Battery pack upper shell is assembled together and can be effectively sealed with the cooperation of battery pack lower housing, battery system of the invention
System dustproof and waterproof grade can reach IP67 requirements.
The battery pack lower housing of the present invention is using low pressure casting aluminum alloy technique, material selection cast aluminium 102.The essence of fitting surface
Degree can ensure that, less than or equal to 0.02mm, the precision in non-processing face can ensure to be less than or equal to 1.5mm.The density of the aluminium alloy compared with
Small, the density of battery pack lower housing is less than 2.7g/cm3.Aluminum alloy battery packet lower housing is than metal plate battery pack lower housing loss of weight ratio
Example is up to more than 35%.The mechanical performance of aluminum alloy battery packet lower housing is also advantageous over sheet metal structural simultaneously.
The production method of battery pack lower housing：
1st, raw material dissolve, and Pork-pieces aluminium ingot and auxiliary material are put into smelting furnace；
2nd, aluminum anodizing, main purpose are to remove the gas and non-metallic inclusion, uniform alloy ingredient in solution；
3rd, shape casting in the sealing container (smelting furnace) equipped with molten aluminum, is passed through dry compressed air, acts on holding
On the liquid aluminum of certain pouring temperature, the pressure differential with cavity in casting die in sealing container is caused, makes molten aluminum in gas pressure
Under the action of power, rise along stalk, cavity is stably entered by cast gate, and suitably increase pressure and keep liquid level in smelting furnace
On gas pressure, make molten aluminum in the mold cavity crystallization and freezing under elevated pressures effect；
4th, die adjustment shape of product size is opened in hot shaping；
5th, it polishes, the product in mold is taken out, unwanted part excision；
6th, ball blast removes surface scale, improves the presentation quality of product；
7th, CNC is processed, and assembling mounting surface, hole position working process is needed product；
8th, it is surface-treated, surface electrophoretic process.
The battery pack lower housing of the present invention effectively improves battery pack lower housing using aluminum alloy low-pressure casting process
Mechanical property；Rigidity, the intensity of battery pack lower housing are higher, fully meet the performance and safety requirements of battery pack；Under battery pack
Housing is high using mach mode dimensional accuracy；Battery pack lower housing superior fatigue resistance；Battery pack lower housing is in high temperature
It is more preferable with the size in wet environment and stability of material.
Aluminum alloy low-pressure casting also has the following advantages that compared to casting technique：
The oxidizing slag of molten aluminum is in upper surface, and the stalk position of low pressure casting is in the underwater portion of aluminium, hence into the aluminium of mold
Liquid is very pure, without oxidizing slag；The casting process parameters of low pressure casting can arbitrarily setting adjusts in processing range, can protect
Card liquid metals fills that type is steady, and molten aluminum seething, impacting when filling type, splash phenomena is reduced or avoided, secondary so as to reduce
The formation of oxidizing slag, substantially increases casting quality at the defects of avoiding or reducing casting compared with other casting technique；Molten aluminum exists
Pressure acts on lower charging type, can improve the mobility of molten aluminum, casting forming is good, advantageously forms clear-cut, any surface finish
Casting, for large thin wall casting molding advantageously；Casting crystallization and freezing, and obtaining fully under pressure
Feeding, therefore cast structure is fine and close, mechanical performance is high；Working condition is good；Produce it is efficient, easily realize mechanization and automation and
The outstanding advantages of low pressure casting.
Battery pack upper shell is processed to form battery pack upper shell upper surface 1-1；Battery pack service switch mounting hole group 1-2；
Battery pack upper shell flange face 1-3；Battery pack upper casing body front surface 1-4 and battery pack upper casing body side surface 1-5.
Battery pack upper shell is processed to form battery pack vehicle mounting hole 2-1 to 2-10；It is defeated that battery pack with vehicle connect high pressure
Go out plug-in unit mounting hole group 2-11；Battery pack connect fast charge plug-in unit mounting hole group 2-12 with vehicle；Battery pack connect trickle charge with vehicle
Plug-in unit mounting hole group 2-13；Battery pack and vehicle connecting communication plug-in unit mounting hole 2-14；Battery high voltage control unit mounting hole group
2-15；Battery pack lower housing sealing flange face 2-16；Battery management unit mounting hole group 2-17；It is easily installed by above structure
Parts in battery pack are positioned, last battery modules unit 2-18 is located in battery pack housing.
Light-weight electric automobile battery system assembly method is as follows：
Step 1：
Battery modules 3-1 is placed according to preset position in battery pack lower housing.With 48 M8 bolts according to 8N.m
Torque battery modules are separately fixed on battery pack lower housing.
Step 2：
Manual maintenance switch and its fixing bracket are placed according to preset position on battery modules mounting hole.With 4
Manual maintenance switch and its fixing bracket are fixed in battery modules by M8 bolts according to the torque of 10N.m.
Step 3：
Battery high voltage control unit is placed according to preset position in battery pack lower housing.With 4 M8 bolts according to
Battery high voltage control unit is fixed on battery pack lower housing by the torque of 8N.m.
Step 4：
Battery management system is placed according to preset position in battery pack lower housing.With 4 M8 bolts according to 8N.m
Torque battery management system is fixed on battery pack lower housing.
Step 5：
Battery modules and high voltage control unit are connected, and carry out insulating protection with series connection copper bar.
Battery modules and other order circuits are connected with low voltage wiring harness, carry out fixation.
Step 6：
High voltage output plug-in unit, high pressure fast charge plug-in unit, trickle charge plug-in unit, communication plug are separately mounted to battery pack lower housing
On.
Step 7：
Upper cover is sealed, does airtight detection.
By the loss of weight of two key components and parts of middle battery pack upper shell and battery pack lower housing to battery system come real
The reduction of existing complete vehicle quality, so as to improve the energy density of battery system, makes the course continuation mileage of vehicle further increase.And
Reasonable in design, safety and stability is reliable.
The present invention is exemplarily described above in conjunction with attached drawing, it is clear that present invention specific implementation is not by aforesaid way
Limitation, as long as employ the present invention design and technical solution carry out various unsubstantialities improvement or it is not improved will
The design and technical solution of the present invention directly applies to other occasions, within protection scope of the present invention.
Claims (9)
1. a kind of light-weight electric automobile battery system, including battery pack upper shell and battery pack lower housing, it is characterised in that：Institute
Battery pack upper shell is stated using fiber glass reinforced polypropylene thermoplastic composite, the battery pack lower housing uses cast aluminium alloy gold
Molding.
2. light-weight electric automobile battery system as described in claim 1, it is characterised in that：Glass in the battery pack upper shell
Fine length is more than 25mm.
3. light-weight electric automobile battery system as described in claim 1, it is characterised in that：The density of the battery pack upper shell
Less than 1.2g/cm3。
4. light-weight electric automobile battery system as described in claim 1, it is characterised in that：The battery pack lower housing is using low
Press cast aluminium alloy gold technological forming.
5. light-weight electric automobile battery system as described in claim 1, it is characterised in that：The density of the battery pack lower housing
Less than 2.7g/cm3。
6. a kind of battery pack upper shell production method in light-weight electric automobile battery system, it is characterised in that：The making
Method includes the following steps：
(1) polypropylene feeding；
(2) single order dual-screw-stem machine melts, and by the rotation of double screw extruder, drives material movement, generates storeroom friction
Heat, it is final to melt；
(3) second order dual-screw-stem machine mixture, by glass together with polypropylene proportionally mixture；
(4) quantitative cut-out ensures material into the weight of mold；
(5) heat preservation conveying ensures the temperature-controllable that material enters before mold；
(6) mold be molded, by hydraulic press to convey come block be molded, mold is opened in pressurize afterwards for a period of time；
(7) pickup post-processes.
7. a kind of battery pack lower housing production method in light-weight electric automobile battery system, it is characterised in that：The making
Method includes the following steps：
(1) aluminium ingot and auxiliary material are put into smelting furnace, carry out raw material dissolving；
(2) aluminum anodizing；
(3) battery pack lower housing shape casting；
(4) die adjustment shape of product size is opened in hot shaping；
(5) product in mold is taken out, the excision of unwanted part, is polished and ball blast；
(6) mounting surface and hole position working process.
8. battery pack lower housing production method as claimed in claim 7, it is characterised in that：In the step (3), equipped with molten aluminum
Sealing container in, be passed through dry compressed air, act on the liquid aluminum for keeping certain pouring temperature, cause sealing container
The interior pressure differential with cavity in casting die makes molten aluminum rise under the action of gas pressure along stalk, steady by cast gate
Ground enters cavity, and increases pressure and keep gas pressure in smelting furnace on liquid level, makes the molten aluminum in mold cavity in a level pressure
The lower crystallization and freezing of power effect.
9. battery pack lower housing production method as claimed in claim 7, it is characterised in that：After the step (6), to battery pack
Lower housing carries out surface electrophoretic process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711412934.6A CN108172713A (en) | 2017-12-24 | 2017-12-24 | A kind of light-weight electric automobile battery system and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711412934.6A CN108172713A (en) | 2017-12-24 | 2017-12-24 | A kind of light-weight electric automobile battery system and preparation method thereof |
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ID=62523960
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| CN201711412934.6A Pending CN108172713A (en) | 2017-12-24 | 2017-12-24 | A kind of light-weight electric automobile battery system and preparation method thereof |
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| CN108417747A (en) * | 2018-02-28 | 2018-08-17 | 奇瑞汽车股份有限公司 | Battery pack installation bolt protective device and electric vehicle with it |
| CN109713359A (en) * | 2018-12-06 | 2019-05-03 | 奇瑞新能源汽车技术有限公司 | A kind of lithium-ion-power cell energy-storage system |
| CN109786596A (en) * | 2018-12-06 | 2019-05-21 | 奇瑞新能源汽车技术有限公司 | A kind of electrokinetic cell system of electric car |
| CN113547098A (en) * | 2021-07-01 | 2021-10-26 | 青岛科麟航空科技有限公司 | Multi-riser tube for battery case of aluminum alloy new energy automobile and low-pressure casting method of multi-riser tube |
| CN114976417A (en) * | 2022-06-16 | 2022-08-30 | 奇瑞新能源汽车股份有限公司 | Long battery cell and new forms of energy electric automobile |
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| CN109786596A (en) * | 2018-12-06 | 2019-05-21 | 奇瑞新能源汽车技术有限公司 | A kind of electrokinetic cell system of electric car |
| CN113547098A (en) * | 2021-07-01 | 2021-10-26 | 青岛科麟航空科技有限公司 | Multi-riser tube for battery case of aluminum alloy new energy automobile and low-pressure casting method of multi-riser tube |
| CN113547098B (en) * | 2021-07-01 | 2022-11-04 | 青岛科麟航空科技有限公司 | Multi-riser tube for battery case of aluminum alloy new energy automobile and low-pressure casting method of multi-riser tube |
| CN114976417A (en) * | 2022-06-16 | 2022-08-30 | 奇瑞新能源汽车股份有限公司 | Long battery cell and new forms of energy electric automobile |
| CN114976417B (en) * | 2022-06-16 | 2023-12-15 | 奇瑞新能源汽车股份有限公司 | Long-cell and new-energy electric automobile |
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Address after: 241000 No. 226 Jin Hua Nan Road, Yijiang hi tech Industrial Development Zone, Anhui, Wuhu Applicant after: Chery New Energy Automobile Co.,Ltd. Address before: 241000 No. 226 Jin Hua Nan Road, Yijiang hi tech Industrial Development Zone, Anhui, Wuhu Applicant before: CHERY NEW ENERGY AUTOMOBILE TECHNOLOGY Co.,Ltd. |
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Application publication date: 20180615 |