CN103606637A - Lithium battery for electric vehicle - Google Patents
Lithium battery for electric vehicle Download PDFInfo
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- CN103606637A CN103606637A CN201310623310.4A CN201310623310A CN103606637A CN 103606637 A CN103606637 A CN 103606637A CN 201310623310 A CN201310623310 A CN 201310623310A CN 103606637 A CN103606637 A CN 103606637A
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- battery
- battery core
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- electric vehicle
- lithium battery
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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
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/233—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
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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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
- H01M50/54—Connection of several leads or tabs of plate-like electrode stacks, e.g. electrode pole straps or bridges
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- 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
Abstract
The invention relates to the technical field of lithium batteries and especially relates to a lithium battery of an electric vehicle. The lithium battery comprises a battery chip module. The battery chip module comprises a connection plate and at least two battery chips. The connection plate comprises a plate prepared from an insulating material, and the plate is provided with a bonding pad and at least two lug holes. Each one of the at least two battery chips comprises a battery chip body and a battery chip lug connected to one end of the battery chip body, and the battery chip lug goes through the lug hole from the back of the connection plate, is bent towards a bonding pad direction and is welded on the bonding pad. The battery chip bodies are orderly overlapped and fixed and a support division bar is arranged between the two adjacent battery chip bodies so that an expansion gap is kept between the two adjacent battery chip bodies. Through cooperation of the connection plate and the support division bar, the problems of easy battery deformation and easy welding spot falling-off and failure are solved.
Description
Technical field
The application relates to technical field of lithium batteries, particularly a kind of electric vehicle lithium battery.
Background technology
Along with the minimizing of petroleum-based energy and the raising of environmental consciousness, electric motor car receives increasing concern, and its popularity is more and more higher.Electric motor car is substantially all to using battery as energy source, by parts such as controller, motors, by electric energy conversion, is mechanical energy motion.Visible, battery is the energy source of electric motor car, belongs to the parts of core.At present lithium ion battery (abbreviation lithium battery) because the lead-acid battery with respect to traditional is more efficient, safety, environmental protection, and weight is little, long service life, therefore most electric motor car all adopts lithium battery as cell device.
Current electric vehicle lithium battery is generally first with positive and negative pole material, to make the battery chip of soft roll structure, the capacity of single battery chip and output voltage are limited, electric motor car needs lithium battery to have high voltage, jumbo feature, therefore needs to adopt a plurality of lithium batteries are carried out to connection in series-parallel to realize the effect of large capacity, high voltage output.At present, generally directly a plurality of battery chips to be directly stacked, then with wire, the lug of these battery chips (abbreviation cell polar ear) connection in series-parallel is got up, yet, the defect of this lithium battery is: (1) is because electric vehicle lithium battery generally all includes tens battery chips, larger with the operation easier of battery chip welding one by one with wire, in welding process easily because battery chip too much exists that polarity puts back, the defect such as short circuit, the cell polar ear that fractures, not prison welding be solid, cause in use easily breaking down; (2) adopt that cell polar ear is directly welded on wire to this structural strength is poor, in electric motor car traveling process, lithium battery easily produces slight deformation due to vibrations, for example, and deformation (certain battery chip is outwards outstanding) easily produces, cell polar ear fractures or the phenomenon of cell polar ear and wire solder joint failure, and then cause battery failures, affect the normal operation of electric motor car; (3) because lithium battery itself has internal resistance, in charge and discharge process, inevitably can produce heat, this will make each battery chip intensification expand, because each battery chip is closely superimposed, therefore expansion tension can make on the one hand battery chip be subject to serious extruding and produce the safety problems such as internal short-circuit, on fire, burning, can cause cell integrated shape deformation on the other hand, thereby and then cause above-mentioned solder joint failure problem, cause battery failures.
For solving the problems of the technologies described above, in prior art, propose a kind of employing framework and fixed battery chip, a kind of bracing frame with a plurality of containing cavities is provided, then battery chip is successively set in bracing frame.Although this method can be avoided the problem that expands and bring, but its complex structure, not only assembling process is complicated (welds after need to packing piecewise bracing frame into again, be unfavorable for automated production), with high costs, and can make the overall weight of battery component and volume all larger, this use for electric motor car is quite disadvantageous.
Summary of the invention
The application's object be to avoid above-mentioned weak point of the prior art and a kind of failure rate is low is provided, lightweight, volume is little and the electric vehicle lithium battery being convenient to produce.
The application's object is achieved through the following technical solutions:
A kind of electric vehicle lithium battery is provided, comprise housing, described housing inner chamber is provided with battery core pack, described battery core pack comprises battery core module, described battery core module comprises connecting plate and at least two battery chips, described connecting plate comprises the plate body of being made by insulating material, on described plate body, be provided with pad and at least two group lug holes, described battery chip comprises battery core body and is connected in the cell polar ear of battery core body one end, described cell polar ear bends and is welded on described pad towards pad direction through described lug hole from the back side of described connecting plate, all battery core bodies are superimposed fixing successively, between adjacent battery core body, be provided with and support parting bead and make to form expansion space between adjacent battery core body.
Wherein, described pad is square pad, and described lug hole is the strip lug hole arranging along described pad edge.
Wherein, on described plate body, comprise positive polar region and negative pole district, described pad comprises and is arranged in parallel in the positive terminal pad of positive polar region and is arranged in parallel in the negative terminal pad in negative pole district, and described lug hole comprises and is arranged in parallel in the positive pole ear hole of positive polar region and is arranged in parallel in the negative lug hole in negative pole district.
Wherein, described positive polar region and negative pole district mutually insulated, described positive polar region is provided with at least two positive terminal pad, all positive terminal pad conductions connect, each two positive pole ear hole of positive terminal pad coupling, described negative pole district is provided with at least two negative terminal pad, and all negative terminal pad conductions connect, each two negative lug hole of negative terminal pad coupling.
Wherein, described battery core pack comprises the battery core module that at least two groups superpose successively, and all battery core modules are connected in series.
Wherein, described support parting bead comprises that the first support parting bead and second supports parting bead, and described first supports one end that parting bead is arranged at described expansion space, and described second supports other one end that parting bead is arranged at described expansion space.
Wherein, described battery core pack outer surface is coated with composite insulation layer, described inner walls is at least provided with two buffer bar, and described buffer bar is along the battery core Direction of superposition setting of battery core pack and be connected to described composite insulation layer, between adjacent described buffer bar, retains and has heat-dissipating space.
Wherein, a side of described housing is at least provided with the heat radiation curved surface of two indents, and described buffer bar is arranged at the inner walls between heat radiation curved surface.
Wherein, described housing is the metal shell of multiaspect column, and the inwall of each side of described housing is provided with buffer bar.
The application's beneficial effect: the application provides a kind of electric vehicle lithium battery, this battery adopts connecting plate that a plurality of battery chips are connected and fixed, coordinate simultaneously and adopt support parting bead to improve the expansion space between adjacent cell chip, during assembling, cell polar ear is inserted into the lug hole connecting plate from the back side of connecting plate, then bent jointing is to pad, add so effectively avoided that polarity puts back man-hour, short circuit, fracture lug and the defect such as not prison welding is solid, improved product quality.Compared with prior art, the application has the following advantages: 1) lug be plugged in behind lug hole and bent jointing to pad, make not frangibility or come off of lug, solder joint is firm, 2) connecting plate not only plays the function of the supporting bracket of similar prior art to battery core pack, also further prevent that battery core pack is because shaking the generation that causes the situations such as indivedual battery chip displacements, thereby effectively improved the shock strength of battery core pack, can effectively prevent the fault that electric motor car vibrations cause, 3) by insert parting bead between adjacent battery chip, make to retain and have expansion space between battery chip, when battery chip expanded by heating, can there is certain expansion space like this, avoid adjacent cell chip and because expand, produced extruding, the distortion that prevents battery chip to be subject to serious extruding and produce the safety problems such as internal short-circuit, on fire, burning and cell integrated profile, thereby it is yielding to have solved on the whole battery, the problem that solder joint easily comes off and lost efficacy, reduce battery failures rate, improve battery reliability, 4) the application is simple in structure, do not need framework, lightweight, volume is little, be applicable to the special requirement of electric motor car, be convenient to processing simultaneously, its additive process and existing assembling process are basically identical, and (process of assembling parting bead can think to assemble a special battery chip, so can continue to use existing automated production equipment), only need to be by bent jointing after the battery chip insertion connecting plate even having superposeed during welding, and because connecting plate belongs to standard component, therefore weld job is to adopt automatic welding method, adopt the disposable welding of a plurality of plumb joints, compare and can significantly enhance productivity with the mode of existing tab welding one by one, assembling is simple, effectively reduce production costs low.
Accompanying drawing explanation
Utilize accompanying drawing to be described further the application, but embodiment in accompanying drawing does not form any restriction to the application, for those of ordinary skill in the art, is not paying under the prerequisite of creative work, can also obtain according to the following drawings other accompanying drawing.
Fig. 1 is the structural representation of the embodiment of a kind of electric vehicle lithium battery of the application.
Fig. 2 is the structural representation of the battery core pack of a kind of electric vehicle lithium battery of the application.
Fig. 3 is the structural representation of the battery core module of a kind of electric vehicle lithium battery of the application.
Fig. 4 is the structural representation of the connecting plate of a kind of electric vehicle lithium battery of the application.
In Fig. 1 to Fig. 4, include:
1---housing, 11---heat radiation curved surface, 2---battery core pack, 3---battery core module, 31---battery chip, 311---battery core body, 312---cell polar ear, 32---connecting plate, 321---pad, 322---lug hole, 323---plate body, 324---positive polar region, 325---negative pole district, 41------the second support parting bead, 5---composite insulation layer, 6---buffer bar that first supports parting bead, 42.
Embodiment
With the following Examples the application is further described.
The embodiment of a kind of electric vehicle lithium battery of the application, as shown in Figures 1 to 4, comprise: housing 1, described housing 1 inner chamber is provided with battery core pack 2, described battery core pack 2 comprises battery core module 3, described battery core module 3 comprises connecting plate 32 and at least two battery chips 31, described connecting plate 32 comprises the plate body 323 of being made by insulating material, on described plate body 323, be provided with pad 321 and at least two group lug holes 322, described battery chip 31 comprises battery core body 311 and is connected in the cell polar ear 312 of battery core body 311 one end, described cell polar ear 312 bends and is welded on described pad 321 towards pad 321 directions through described lug hole 322 from the back side of described connecting plate 32, all battery core bodies 311 are superimposed fixing successively, between adjacent battery core body 311, be provided with and support parting bead so that form expansion space between adjacent battery core body 311.
This battery adopts connecting plate 32 that a plurality of battery chips 31 are connected and fixed, coordinate simultaneously and adopt support parting bead to improve expansion space, during assembling, cell polar ear 312 is inserted into the lug hole 322 on connecting plate 32, then bent jointing is to pad 321, add and effectively avoided man-hour polarity to put back, short circuit, the defects such as lug and the not prison welding of fractureing is solid, improved product quality, again because lug is plugged in the rear also bent jointing in lug hole 322 to pad 321, lug is frangibility or come off not, solder joint is firm, and 32 pairs of battery packs of connecting plate also play the function of similar supporting bracket, can further prevent that battery pack is because shaking the generation that causes the situations such as indivedual battery chip 31 displacements, thereby effectively improved the shock strength of battery pack, can effectively prevent that electric motor car vibrations from causing fault, by inserting parting bead between the battery chip 31 adjacent, make to retain and have expansion space between battery chip 31, at cell piece expanded by heating, be to have certain expansion space like this, avoided adjacent cell chip 31 and because expand, produced extruding, prevented that expansion tension from can make on the one hand battery chip 31 be subject to serious extruding and producing safety problem and the cell integrated shape deformations such as internal short-circuit, on fire, burning, thereby it is yielding to have solved on the whole battery, the problem that solder joint easily comes off and lost efficacy, reduces battery failures rate, improves battery reliability.In addition, compared with prior art, the application is simple in structure, owing to not needing framework, lightweight, volume is little, be applicable to the special requirement of electric motor car, be convenient to processing simultaneously, its additive process and existing assembling process are basically identical, and (process of assembling parting bead can think to assemble a special battery chip 31, so can continue to use existing automated production equipment), during welding, only need to insert the rear bent jointing of connecting plate 32 by connecting the battery chip 31 having superposeed, and because connecting plate 32 belongs to standard component, therefore weld job is to adopt automatic welding method, adopt the disposable welding of a plurality of plumb joints, compare and can significantly enhance productivity with the mode of existing tab welding one by one, assembling is simple, effectively reduce production costs low.
Described pad 321 is square pad 321, and described lug hole 322 is the strip lug hole 322 arranging along described pad 321 edges.During assembling, the cell polar ear 312 of battery chip 31 is directly welded on pad 321 after pad 321 edge bendings, has further improved the fastness of welding, improves the anti-seismic performance of battery pack.
On described plate body 323, comprise 324He negative pole district, positive polar region 325, described pad 321 comprise be arranged in parallel in the positive terminal pad of positive polar region and and be arranged in parallel in the negative terminal pad in negative pole district, described lug hole comprises and is arranged in parallel in the positive pole ear hole of positive polar region and is arranged in parallel in the negative lug hole in negative pole district.By pad 321, lug hole 322 are be arranged in parallel, make its marshalling, the cell polar ear 312 of pegging graft while being convenient to assemble, certainly, the concrete setting position in pad 321 and lug hole 322 is also adjusted flexibly according to the set-up mode that stacks shape and cell polar ear 312 of battery chip 31.
324He negative pole district, described positive polar region 325 mutually insulateds, described positive polar region is provided with two positive terminal pad, all positive terminal pad conductions connect, each two positive pole ear hole of positive terminal pad coupling, described negative pole district is provided with two negative terminal pad, all negative terminal pad conductions connect, each two negative lug hole of negative terminal pad coupling.Be each connecting plate 32 four battery chips 31 of can pegging graft in the present embodiment, these four battery chips 31 are connected in parallel simultaneously.Certainly, according to concrete needs, more positive terminal pad 321 and corresponding negative terminal pad 321 also can be set, thereby make a connecting plate 32 can connect more battery chip 31.In addition, this place makes all battery chips 31 be connected in parallel, simple in structure on connecting plate 32, be convenient to processing, certainly capacity and the voltage for battery needs, and also can make the pad 321 on same a plate 32 be connected in series, but this need to increase certain conducting wire.
Described battery core pack 2 comprises many groups battery core module 3 of stack successively, and all battery core modules 3 are connected in series.Also be that the application is at a plurality of battery chips 31 of 3 li of parallel connections of a battery core module, and then a plurality of battery core modules 3 of connecting, adopt this connection mode, can guarantee the structural behaviour of battery on the one hand, and can be flexibly by adjusting battery chip 31 quantity of battery core module 3 parallel connections and the battery modules quantity of series connection, change the data such as capacity, output voltage of battery, be beneficial to diversified need of production.
Described support parting bead comprises that the first support parting bead 41 and second supports parting bead 42, and described first supports one end that parting bead 41 is arranged at described expansion space, and described second supports other one end that parting bead 42 is arranged at described expansion space.At this, by the edges at two ends at battery chip 31, parting bead is set, thereby between adjacent battery chip 31, form the clearance for expansion of chamber shape, therefore cell expansion makes dilation be limited in the inside of battery main body and can not produce deformation, even if this structure can guarantee that adjacent cell chip 31 is also can effectively be fixedly connected with in expansion under the condition of using minimum parting bead simultaneously.In addition also more parting bead can be set as required, for example, encircle the battery core main body week of battery chip 31 along four parting beads are set.
Described battery core pack 2 outer surfaces are coated with composite insulation layer 5, described housing 1 inwall is at least provided with two buffer bar 6, described buffer bar 6 is along the battery core Direction of superposition setting of battery core pack 2 and be connected to described composite insulation layer 5, between described adjacent buffer bar 6, retains and has heat-dissipating space.Because battery core pack 2 outer surfaces are coated with composite insulation layer 5, composite insulation layer 5 is closely wrapped in battery core pack 2 outer surfaces both can make battery core pack 2 and outside (particularly metal shell 1) insulation, also can make each sheet chip be closely linked and form on-deformable battery core pack 2, can also in extreme impact environment, avoid preventing the impact of sharp objects to battery core pack 2, metal shell 1 inwall is at least provided with two buffer bar 6, and buffer bar 6 is along the battery core Direction of superposition setting of battery core pack 2 and be connected to described composite insulation layer 5, therefore between every a slice battery chip 31 and metal outer wall, all there is buffer medium, and every a slice battery chip 31 is stressed evenly, can avoid the damage producing because of shock in electric motor car traveling process, also can effectively avoid the problem of battery core pack 2 distortion that cause due to each sheet battery chip 31 unbalance stress simultaneously, in addition, owing to adopting the buffer structure of strip, between adjacent buffer bar 6, retain and have heat-dissipating space, therefore the heat that battery core pack 2 produces can be passed to metal shell 1, and then outwards dispel the heat by metal shell 1, solved in prior art owing to filling the bad problem of heat radiation that sponge causes that cushions.
One side of described housing 1 is at least provided with the heat radiation curved surface 11 of two indents, and described buffer bar 6 is arranged at the inner walls between heat radiation curved surface 11.Buffer bar 6 is arranged between the heat radiation curved surface 11 of two indents, the female parts of heat radiation curved surface 11 can provide more heat-conducting area, thereby it is too high to make up cannot the dispel the heat temperatures at localized regions that causes of buffer bar 6 setting areas, has guaranteed the efficiently radiates heat of lithium cell core group 2 at regional.Certainly, housing 1 can also arrange more heat radiation curved surface 11 to play better radiating effect.
Described housing 1 is the metal shell 1 of four sides column, the inwall of each side of described housing 1 is provided with buffer bar 6, adopt this structure, not only can be more fixing buffer bar 6, and can effectively prevent that by being arranged at the cooperation between buffer bar 6 on ipsilateral not battery core pack 2 is because clashing into the damage that causes (be battery master no matter clash into which face all can effectively be cushioned), further, because the inwall of each side is provided with buffer bar 6, therefore battery core pack 2 can have enough heat-dissipating spaces, can effectively guarantee radiating effect.Certainly, according to concrete needs, this metal shell 1 can also be the structure of other multiaspect columns, such as six posts, octagon column etc.In addition, each side also can arrange many buffer bar 6 as required, as long as guarantee to retain, has enough heat-dissipating spaces.
Finally should be noted that; above embodiment is only in order to illustrate the application's technical scheme; but not restriction to the application's protection range; although the application has been done to explain with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can modify or be equal to replacement the application's technical scheme, and not depart from essence and the scope of present techniques scheme.
Claims (9)
1. an electric vehicle lithium battery, comprise housing, described housing inner chamber is provided with battery core pack, it is characterized in that: described battery core pack comprises battery core module, described battery core module comprises connecting plate and at least two battery chips, described connecting plate comprises the plate body of being made by insulating material, on described plate body, be provided with pad and at least two group lug holes, described battery chip comprises battery core body and is connected in the cell polar ear of battery core body one end, described cell polar ear bends and is welded on described pad towards pad direction through described lug hole from the back side of described connecting plate, all battery core bodies are superimposed fixing successively, between adjacent battery core body, be provided with and support parting bead and make to form expansion space between adjacent battery core body.
2. a kind of electric vehicle lithium battery as claimed in claim 1, is characterized in that: described pad is square pad, and described lug hole is the strip lug hole arranging along described pad edge.
3. a kind of electric vehicle lithium battery as claimed in claim 1, it is characterized in that: on described plate body, comprise positive polar region and negative pole district, described pad comprises and is arranged in parallel in the positive terminal pad of positive polar region and is arranged in parallel in the negative terminal pad in negative pole district, and described lug hole comprises and is arranged in parallel in the positive pole ear hole of positive polar region and is arranged in parallel in the negative lug hole in negative pole district.
4. a kind of electric vehicle lithium battery as claimed in claim 3, it is characterized in that: described positive polar region and negative pole district mutually insulated, described positive polar region is provided with at least two positive terminal pad, all positive terminal pad conductions connect, each two positive pole ear hole of positive terminal pad coupling, described negative pole district is provided with at least two negative terminal pad, and all negative terminal pad conductions connect, each two negative lug hole of negative terminal pad coupling.
5. a kind of electric vehicle lithium battery as claimed in claim 1, is characterized in that: described battery core pack comprises the battery core module that at least two groups superpose successively, and all battery core modules are connected in series.
6. a kind of electric vehicle lithium battery as claimed in claim 1, it is characterized in that: described support parting bead comprises that the first support parting bead and second supports parting bead, described first supports one end that parting bead is arranged at described expansion space, and described second supports other one end that parting bead is arranged at described expansion space.
7. a kind of electric vehicle lithium battery as claimed in claim 1, it is characterized in that: described battery core pack outer surface is coated with composite insulation layer, described inner walls is at least provided with two buffer bar, described buffer bar is along the battery core Direction of superposition setting of battery core pack and be connected to described composite insulation layer, between adjacent described buffer bar, retains and has heat-dissipating space.
8. a kind of electric vehicle lithium battery as claimed in claim 7, is characterized in that: a side of described housing is at least provided with the heat radiation curved surface of two indents, and described buffer bar is arranged at the inner walls between heat radiation curved surface.
9. a kind of electric vehicle lithium battery as claimed in claim 7, is characterized in that: described housing is the metal shell of multiaspect column, and the inwall of each side of described housing is provided with buffer bar.
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| CN201310623310.4A CN103606637B (en) | 2013-11-30 | 2013-11-30 | A kind of electric vehicle lithium battery |
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| CN201310623310.4A CN103606637B (en) | 2013-11-30 | 2013-11-30 | A kind of electric vehicle lithium battery |
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| CN103606637B CN103606637B (en) | 2016-05-04 |
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| CN107428235B (en) * | 2015-03-16 | 2019-09-03 | 大众汽车有限公司 | The device of means of transport and connection electrochemical energy accumulator and the self-contained power source for capableing of electrically driven (operated) means of transport |
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| WO2020207231A1 (en) * | 2019-04-08 | 2020-10-15 | 宁德时代新能源科技股份有限公司 | Battery |
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| CN111313081A (en) * | 2020-02-28 | 2020-06-19 | 浙江克能新能源科技有限公司 | Soft-package lithium iron phosphate battery and manufacturing method thereof |
| CN111313081B (en) * | 2020-02-28 | 2023-09-05 | 浙江克能新能源科技有限公司 | Soft package lithium iron phosphate battery and manufacturing method thereof |
| CN112993479A (en) * | 2021-02-05 | 2021-06-18 | 天津海狸新能源科技有限公司 | Adjustable voltage lithium cell based on many electric cores |
| CN112993479B (en) * | 2021-02-05 | 2022-11-25 | 天津海狸新能源科技有限公司 | Adjustable voltage lithium cell based on many electric cores |
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