CN104282864A - Cell capable of reducing or eliminating housing voltage and method for preparing same - Google Patents
Cell capable of reducing or eliminating housing voltage and method for preparing same Download PDFInfo
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- CN104282864A CN104282864A CN201310273885.8A CN201310273885A CN104282864A CN 104282864 A CN104282864 A CN 104282864A CN 201310273885 A CN201310273885 A CN 201310273885A CN 104282864 A CN104282864 A CN 104282864A
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- Prior art keywords
- insulating sleeve
- cover plate
- lug
- battery
- upper cover
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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
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
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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
- H01M10/04—Construction or manufacture in general
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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
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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
- 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
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
A provided cell capable of reducing or eliminating housing voltage comprises a housing, an electrical core with a first electrode tab and a second electrode tab, and an insulating sheath arranged between the housing and the electrical core; the electrical core with the first electrode tab and the second electrode tab is assembled in the insulating sheath, and the insulating sheath is in sealed connection with an upper cover plate of the housing, the electrical core, the insulating sheath and the housing upper cover plate, which are assembled together, are packaged in a lower shell of the housing, and the lower shell of the housing is in sealed connection with the upper cover plate of the housing. The invention also provides a method for preparing the cell capable of reducing or eliminating housing voltage, and in the method, the insulating sheath is arranged between the housing and the electrode core. The advantage of the cell and the cell preparation method comprises that an electrolyte only contacts with an anode and a cathode while not contacting with the housing of the cell because of the insulating sheath, and thus the voltage between the housing and the electrodes is reduced or eliminated.
Description
Technical field
The present invention relates to a kind of battery and the method preparing battery, specifically, the present invention relates to one can reduce
or eliminatethe battery of sheath voltage and the method for this battery of preparation.
Background technology
Oil is one of main source of the fuel automobile energy, and oil memory space is fewer and feweri.Ge great automobile vendor competitively researches and develops mixed electrical automobile or electric automobile for this reason.For mixed electrical automobile and electric automobile, electrokinetic cell is its core drive source.The electrokinetic cell being currently available for automobile comprises multiple kind: lead-acid battery, nickel-cadmium cell, lithium ion battery etc.
Some employing metal shell of the current electrokinetic cell for automobile carrys out the battery core of sealed cell.As shown in Figure 1, traditional electrokinetic cell comprises shell, positive pole, negative pole, anti-riot valve, electrolyte inlet, lug brace, battery core and lug.Shell comprises upper cover plate and lower house, and upper cover plate comprises outer cover plate and inner cover plate, and outer cover plate is made up of metal material, and inner cover plate is made up of insulating material.Positive pole and negative pole to be connected on upper cover plate by insulating cell and to be connected on corresponding lug by each self-corresponding lug brace.Isolated positive pole, negative pole and lug brace are connected on upper cover plate in the mode of electric insulation.Positive pole and negative pole are spaced apart and be connected on upper cover plate in electric insulation mode in electric insulation mode, and positive pole and negative pole are electrically connected with corresponding lug brace, and electric insulation and being connected on upper cover plate in electric insulation mode between lug brace.Lug is electrically connected with battery core, and wherein a pair lug is connected with the anode layer of battery core, and another is connected with the negative electrode layer of battery core lug, insulate between lug.During cell damage, cell internal pressure increases, and such as, electrolyte in lower house and battery core etc. can overflow from explosion-proof valve, thus reduce the pressure of inside battery, to improve the fail safe of battery use.Lug brace adopts identical material to make with corresponding electrode (negative or positive electrode).The defect of prior art is, upper cover plate, lower house and electrode are understood simultaneously and electrolyte contacts, thus between electrode and shell, define electrical potential difference, make outer casing electrification, cause safety in utilization to reduce.
In order to reduce or eliminate the voltage between shell and electrode, must by shell and electrode completely isolated, make electrolyte only with electrode contact.Need to provide a kind of for this reason and reduce the battery of sheath voltage and the method for this battery of preparation.
Summary of the invention
An object of the present invention is to provide a kind of battery reducing or eliminate sheath voltage, to solve prior art Problems existing.
Above-mentioned purpose of the present invention is achieved by the following technical programs:
A technical scheme of the present invention provides a kind of battery reducing sheath voltage, it comprises shell and the battery core with the first lug and the second lug, it is characterized in that, battery also comprises the insulating sleeve be arranged between shell and battery core, to be assemblied in insulating sleeve with the first lug and the battery core of the second lug and insulating sleeve is connected in a sealing fashion with the upper cover plate of shell, the battery core with the first lug and the second lug be assembled together, the upper cover plate of insulating sleeve and shell is packaged in the lower house of shell together and the lower house of shell is connected in a sealing fashion with the upper cover plate of shell.
The battery of the reduced sheath voltage that technique scheme according to the present invention provides, the upper cover plate of its housing comprises the insulation inner cover plate of the below of conducting electricity outer cover plate and being arranged on conduction outer cover plate, insulating sleeve comprises insulating sleeve body, insulating sleeve peristome and insulating sleeve opening edge portion, the lower house of shell comprises lower house body and lower house peristome, battery core with the first lug and the second lug is assemblied in insulating sleeve body through insulating sleeve peristome and insulating sleeve opening edge portion, and insulating sleeve opening edge portion is connected in the outer region of insulation inner cover plate in a sealing fashion, the battery core with the first lug and the second lug be assembled together, the upper cover plate of insulating sleeve and shell is encapsulated in lower house body through lower house peristome together, lower house peristome is connected with conduction outer cover plate in a sealing fashion.
The battery of the reduced sheath voltage that technique scheme according to the present invention provides, wherein insulating sleeve also comprises insulating sleeve choke, insulating sleeve choke is connected between insulating sleeve opening edge portion and insulating sleeve body to seamlessly transit mode, and insulating sleeve choke forms the encapsulated space for assembling battery core together with insulating sleeve body.
The battery of the reduced sheath voltage that technique scheme according to the present invention provides, wherein battery also comprises positive pole, negative pole, first lug brace, second lug brace, explosion-proof valve and electrolyte inlet, positive pole and negative pole spaced apart and be connected on upper cover plate in the mode be electrically insulated from each other, first lug brace is relative with positive pole and negative pole respectively with the second lug brace and be electrically connected and be connected on upper cover plate in the mode be electrically insulated from each other, first lug and the second lug are electrically connected with the anode layer in battery core and negative electrode layer respectively, positive pole is electrically connected with the first lug by the first lug brace, negative pole is electrically connected with the second lug by the second lug brace, explosion-proof valve and electrolyte inlet are arranged on upper cover plate, electrolyte inlet is used for injecting electrolyte to the space in battery core, explosion-proof valve is used for making battery core electrolyte inside overflow via it when cell internal pressure increases.
The battery of the reduced sheath voltage that technique scheme according to the present invention provides, wherein battery also comprises explosive-proof sealed film, explosive-proof sealed film is arranged in the insulation inner cover plate of upper cover plate, for the electrolyte in battery and explosion-proof valve are separated, explosive-proof sealed film can be broken through by air pressure when cell internal pressure raises, thus does not affect the unlatching of explosion-proof valve.
The battery of the reduced sheath voltage that technique scheme according to the present invention provides, wherein battery also comprises explosive-proof sealed film, explosive-proof sealed film can be formed together with the insulation inner cover plate of upper cover plate, for the electrolyte in battery and explosion-proof valve are separated, explosive-proof sealed film can be broken through by air pressure when cell internal pressure raises, thus does not affect the unlatching of explosion-proof valve.
The battery of the reduced sheath voltage that technique scheme according to the present invention provides, wherein after injecting electrolyte via electrolyte inlet, adopts the glue sealing electrolyte inlet of electrolyte resistance, thus reaches the object of isolation upper cover plate and inner cover plate.
The battery of the reduced sheath voltage that technique scheme according to the present invention provides, wherein battery also comprises insulating cell, and positive pole and negative pole are connected on upper cover plate by insulating cell.
The battery of the reduced sheath voltage that technique scheme according to the present invention provides, insulating sleeve opening edge portion is crimping form, insulating sleeve opening edge portion extends along the direction being approximately perpendicular to insulating sleeve body or extends obliquely along with the insulating sleeve body direction that has a certain degree, when insulating sleeve opening edge portion along be approximately perpendicular to insulating sleeve body direction extend time, insulating sleeve opening edge portion against and be sealed to insulation inner cover plate outer region below on; When insulating sleeve opening edge portion along and insulating sleeve body have a certain degree direction extend obliquely time, insulation inner cover plate outer region there is rake, insulating sleeve opening edge portion against and be sealed to insulation inner cover plate outer region rake on.
The battery of the reduced sheath voltage that technique scheme according to the present invention provides, wherein insulating sleeve opening edge portion is straight flange form, insulating sleeve opening edge portion against and be sealed to insulation inner cover plate outer region outside on.
Another technical scheme of the present invention provides a kind of method preparing the battery that can reduce sheath voltage, battery shell and the battery core with the first lug and the second lug, wherein:
Make to be assemblied in insulating sleeve with the first lug and the battery core of the second lug and insulating sleeve is connected in a sealing fashion with the upper cover plate of shell, and
The upper cover plate of the battery core with the first lug and the second lug making to be assembled together, insulating sleeve and shell is packaged in the lower house of shell together and the lower house of shell is connected in a sealing fashion with the upper cover plate of shell.
The preparation that another technical scheme according to the present invention provides can reduce the method for the battery of sheath voltage, the upper cover plate of its housing comprises the insulation inner cover plate of the below of conducting electricity outer cover plate and being arranged on conduction outer cover plate, insulating sleeve comprises insulating sleeve body, insulating sleeve peristome and insulating sleeve opening edge portion, the lower house of shell comprises lower house body and lower house peristome, battery core is made to pass insulating sleeve peristome and insulating sleeve opening edge portion is assemblied in insulating sleeve body, and make insulating sleeve opening edge portion be connected in the outer region of insulation inner cover plate in a sealing fashion, and make the battery core that is assembled together, the upper cover plate of insulating sleeve and shell is encapsulated in lower house body through lower house peristome together, lower house peristome is connected with conduction outer cover plate in a sealing fashion.
The preparation that another technical scheme according to the present invention provides can reduce the method for the battery of sheath voltage, wherein insulating sleeve also comprises insulating sleeve choke, insulating sleeve choke is connected between insulating sleeve opening edge portion and insulating sleeve body to seamlessly transit mode, and insulating sleeve choke forms the encapsulated space for assembling battery core together with insulating sleeve body.
The preparation that another technical scheme according to the present invention provides can reduce the method for the battery of sheath voltage, wherein battery also comprises positive pole, negative pole, first lug brace, second lug brace, explosion-proof valve and electrolyte inlet, positive pole and negative pole spaced apart and be connected on upper cover plate in the mode be electrically insulated from each other, first lug brace is relative with positive pole and negative pole respectively with the second lug brace and be electrically connected and be connected on upper cover plate in the mode be electrically insulated from each other, first lug and the second lug are electrically connected with the anode layer in battery core and negative electrode layer respectively, positive pole is electrically connected with the first lug by the first lug brace, negative pole is electrically connected with the second lug by the second lug brace, explosion-proof valve and electrolyte inlet are arranged on upper cover plate, electrolyte inlet is used for injecting electrolyte to the space in battery core, explosion-proof valve is used for making battery core electrolyte inside overflow via it when cell internal pressure increases.
The preparation that another technical scheme according to the present invention provides can reduce the method for the battery of sheath voltage, wherein battery also comprises explosive-proof sealed film, explosive-proof sealed film is arranged in the insulation inner cover plate of upper cover plate, for the electrolyte in battery and explosion-proof valve are separated, explosive-proof sealed film can be broken through by air pressure when cell internal pressure raises, thus does not affect the unlatching of explosion-proof valve.
The preparation that another technical scheme according to the present invention provides can reduce the method for the battery of sheath voltage, wherein battery also comprises explosive-proof sealed film, explosive-proof sealed film can be formed together with the insulation inner cover plate of upper cover plate, for the electrolyte in battery and explosion-proof valve are separated, explosive-proof sealed film can be broken through by air pressure when cell internal pressure raises, thus does not affect the unlatching of explosion-proof valve.
The preparation that another technical scheme according to the present invention provides can reduce the method for the battery of sheath voltage, wherein after injecting electrolyte via electrolyte inlet, adopt the glue sealing electrolyte inlet of electrolyte resistance, thus reach the object of isolation upper cover plate and inner cover plate.
The preparation that another technical scheme according to the present invention provides can reduce the method for the battery of sheath voltage, and wherein battery also comprises insulating cell, and positive pole and negative pole are connected on upper cover plate by insulating cell.
The preparation that another technical scheme according to the present invention provides can reduce the method for the battery of sheath voltage, wherein insulating sleeve opening edge portion is crimping form, insulating sleeve opening edge portion extends along the direction being approximately perpendicular to insulating sleeve body or extends obliquely along with the insulating sleeve body direction that has a certain degree, when insulating sleeve opening edge portion along be approximately perpendicular to insulating sleeve body direction extend time, insulating sleeve opening edge portion against and be sealed to insulation inner cover plate outer region below on; When insulating sleeve opening edge portion along and insulating sleeve body have a certain degree direction extend obliquely time, insulation inner cover plate outer region there is rake, insulating sleeve opening edge portion against and be sealed to insulation inner cover plate outer region rake on.
The preparation that another technical scheme according to the present invention provides can reduce the method for the battery of sheath voltage, and wherein insulating sleeve opening edge portion is straight flange form, insulating sleeve opening edge portion against and be sealed to insulation inner cover plate outer region outside on.
The benefit of battery of the present invention is, due to insulating sleeve make electrolyte only with positive pole and cathode contact and not with the housing contacts of battery, thus the voltage reducing or eliminate between shell and electrode.
The benefit of battery of the present invention is also, for the insulating sleeve with insulating sleeve choke, when equal battery case size, can make full use of the inner space of battery, add the volume of battery core, thus improve the energy density of battery.
Accompanying drawing explanation
With reference to accompanying drawing, disclosure of the present invention will be easier to understand.Those of ordinary skill in the art it is easily understood that: these accompanying drawings only for illustrating technical scheme of the present invention, and and are not intended to be construed as limiting protection scope of the present invention.In figure:
Fig. 1 shows the exploded perspective view of a kind of electrokinetic cell of prior art.
Fig. 2 shows the exploded perspective view of electrokinetic cell according to an embodiment of the invention.
Fig. 3 shows the perspective view of an insulating sleeve example of Fig. 2 medium power battery.
Fig. 4 shows the perspective view of another example of insulating sleeve of Fig. 2 medium power battery.
Fig. 5 shows the sectional view encapsulating relation between the insulating sleeve of Fig. 2 medium power battery and inner cover plate.
Fig. 6 A-Fig. 6 D shows the sectional view of the multiple examples encapsulating relation between the insulating sleeve of electrokinetic cell and inner cover plate.
Parts and label list
1 upper cover plate
1a outer cover plate
1b inner cover plate
2 lower houses
3 battery cores
4a first lug
4b second lug
5 positive poles
6 negative poles
7a first lug brace
7b second lug brace
8 explosion-proof valves
9 insulating cells
10,100 insulating sleeves
11 explosive-proof sealed films
10a, 100a insulating sleeve body
10b, 100b insulating sleeve peristome
10c, 100c insulating sleeve opening edge portion
100d insulating sleeve choke.
Embodiment
Fig. 1-5 and following description describe Alternate embodiments of the present invention and how to implement to instruct those of ordinary skill in the art and to reproduce the present invention.In order to instruct technical solution of the present invention, simplifying or having eliminated some conventional aspects.It should be understood by one skilled in the art that the modification that is derived from these execution modes or replace and will drop in protection scope of the present invention.It should be understood by one skilled in the art that following characteristics can combine to form multiple modification of the present invention in every way.Thus, the present invention is not limited to following Alternate embodiments, and only by claim and their equivalents.
A specific embodiment of the present invention proposes a kind of battery reducing sheath voltage, it comprises shell and the battery core 3 with the first lug 4a and the second lug 4b, wherein battery also comprises the insulating sleeve 10 be arranged between shell and battery core 3, 100, to be assemblied in insulating sleeve 10 with the first lug 4a and the battery core 3 of the second lug 4b and upper cover plate 1 sealing means of insulating sleeve 10 shell is connected, the battery core with the first lug 4a and the second lug 4b be assembled together, insulating sleeve 10, 100 and the upper cover plate 1 of shell is packaged into together in the lower house 2 of shell and the lower house 2 of shell is connected in a sealing fashion with the upper cover plate 1 of shell.
Another specific embodiment of the present invention proposes a kind ofly prepares the above-mentioned method reducing the battery of sheath voltage, battery shell and the battery core 3 with the first lug 4a and the second lug 4b, wherein:
Make to be assemblied in insulating sleeve 10,100 with the first lug 4a and the battery core 3 of the second lug 4b and insulating sleeve 10,100 is connected in a sealing fashion with the upper cover plate 1 of shell, and
The upper cover plate 1 of the battery core 3 with the first lug 4a and the second lug 4b making to be assembled together, insulating sleeve 10,100 and shell is packaged in the lower house 2 of shell together and the lower house 2 of shell is connected in a sealing fashion with the upper cover plate 1 of shell.
According to specific embodiment according to the present invention propose a kind of reduce sheath voltage battery and propose according to another specific embodiment according to the present invention a kind ofly prepare the above-mentioned method reducing the battery of sheath voltage, the upper cover plate 1 of shell comprises the insulation inner cover plate 1b of the below of conducting electricity outer cover plate 1a and being arranged on conduction outer cover plate, insulating sleeve 10 comprises insulating sleeve body 10a, 100a, insulating sleeve peristome 10b, 100b and insulating sleeve opening edge portion 10c, 100c, the lower house 2 of shell comprises lower house body and lower house peristome, battery core 3 with the first lug 4a and the second lug 4b is assemblied in insulating sleeve body 10a through insulating sleeve peristome 10b and insulating sleeve opening edge portion 10c, and insulating sleeve opening edge portion 10c is connected in the outer region of insulation inner cover plate 1b in a sealing fashion, the battery core 3 with the first lug 4a and the second lug 4b be assembled together, the upper cover plate 1 of insulating sleeve 10 and shell is encapsulated in lower house body through lower house peristome together, lower house peristome is connected with conduction outer cover plate 1a in a sealing fashion.Specifically, insulating sleeve opening edge portion 10c can be (as shown in Figure 6 C and 6 D shown in FIG.) of (as shown in Fig. 3, Fig. 4, Fig. 6 A and Fig. 6 B) of crimping form or straight flange form.When wherein insulating sleeve opening edge portion 10c is crimping form, insulating sleeve opening edge portion 10c can extend along the direction being approximately perpendicular to insulating sleeve body 10a, 100a or extend obliquely along with insulating sleeve body 10a, 100a direction that has a certain degree, when insulating sleeve opening edge portion 10c along be approximately perpendicular to insulating sleeve body 10a, 100a direction extend time, insulating sleeve opening edge portion 10c against and be sealed to insulation inner cover plate 1b outer region below on; When insulating sleeve opening edge portion 10c and insulating sleeve body 10a, 100a have a certain degree direction extend obliquely time, insulation inner cover plate 1b outer region there is rake, insulating sleeve opening edge portion 10c against and be sealed to insulation inner cover plate 1b outer region rake on.When insulating sleeve opening edge portion 10c is straight flange form, insulating sleeve opening edge portion 10c against and be sealed to insulation inner cover plate 1b outer region outside on.As shown in Figure 6 C, the outside of the outer region of insulation inner cover plate 1b can have shoulder.Alternatively, as shown in Figure 6 D, the outside of the outer region of insulation inner cover plate 1b is straight flange.
According to specific embodiment according to the present invention propose a kind of reduce sheath voltage battery and propose according to another specific embodiment according to the present invention a kind ofly prepare the above-mentioned method reducing the battery of sheath voltage, insulating sleeve 100 also comprises insulating sleeve choke 100d, insulating sleeve choke 100d is connected between insulating sleeve opening edge portion 100c and insulating sleeve body 100a to seamlessly transit mode, and insulating sleeve choke 100d forms the encapsulated space for assembling battery core together with insulating sleeve body 100a.
According to specific embodiment according to the present invention propose a kind of reduce sheath voltage battery and propose according to another specific embodiment according to the present invention a kind ofly prepare the above-mentioned method reducing the battery of sheath voltage, battery also comprises positive pole 5, negative pole 6, first lug brace 7a, second lug brace 7b, explosion-proof valve 8 and electrolyte inlet (not shown), positive pole 5 and negative pole 6 spaced apart and be connected on upper cover plate 1 in the mode be electrically insulated from each other, first lug brace 7a is relative with negative pole 6 with positive pole 5 respectively with the second lug brace 7b and be electrically connected and be connected on upper cover plate 1 in the mode be electrically insulated from each other, first lug 4a and the second lug 4b is electrically connected with the anode layer in battery core 3 and negative electrode layer respectively, positive pole 5 is connected with the first lug electricity 4a by the first lug brace 7a, negative pole 6 is electrically connected with the second lug 4b by the second lug brace 7b, explosion-proof valve 8 and electrolyte inlet are arranged on upper cover plate 1, electrolyte inlet is used for injecting electrolyte to the space in battery core, explosion-proof valve 8 overflows via it for making battery core electrolyte inside when cell internal pressure increases.
Fig. 2 shows the exploded perspective view of electrokinetic cell according to an embodiment of the invention.Fig. 3 shows the perspective view of an insulating sleeve example of Fig. 2 medium power battery.As Figure 2-3, electrokinetic cell comprise there is upper cover plate 1 and lower house 2 shell, battery core 3, first lug 4a, the second lug 4b, positive pole 5, negative pole 6, first lug brace 7a, the second lug brace 7b, anti-riot valve 8, insulating cell 9, insulating sleeve 10 and electrolyte inlet (not shown).Upper cover plate 1 comprises outer cover plate 1a that metal material makes and the inner cover plate 1b that insulating material is made.Lower house 2 comprises peristome and lower house body, and body is made up of bottom and sidepiece, and the bottom of lower house 2 and sidepiece form encapsulated space.
First lug 4a and the second lug 4b is electrically connected on anode layer in battery core 3 and negative electrode layer in the mode of electric insulation each other.Positive pole 5 and negative pole 6 spaced apart and be connected on upper cover plate 1 in the mode be electrically insulated from each other, the first lug brace 7a be electrically connected with positive pole 5 and the second lug brace 7b be electrically connected with negative pole 6 is spaced apart and be connected on upper cover plate 1 in the mode be electrically insulated from each other.Positive pole 5 and negative pole 6 are connected on upper cover plate 1 by corresponding insulating cell 9.Anti-riot valve 8 and electrolyte inlet are also arranged on upper cover plate 1.During cell damage, cell internal pressure increases, and such as, electrolyte in lower house and battery core can wait and can overflow from explosion-proof valve 8, thus reduces the pressure of inside battery, to improve the fail safe of battery use.
Insulating sleeve 10 comprises insulating sleeve body 10a, insulating sleeve peristome 10b and insulating sleeve opening edge portion 10c.Edge sheath body 10a comprises bottom and sidepiece, and bottom and sidepiece form encapsulated space.When battery assembling uses, the battery core 3 being equipped with the first lug 4a and the second lug 4b is made to be encapsulated in edge sheath body 10a through insulating sleeve peristome 10b; The inner cover plate 1b of the upper cover plate then making the insulating sleeve opening edge portion 10c of insulating sleeve 10 make against insulating material also makes insulating sleeve opening edge portion 10c outwards turn down flange, the outer region of this flange and inner cover plate 10b is fitted, and the flange of insulating sleeve opening edge portion 10c and the outer region of inner cover plate 10b are by the method such as welding to be connected hermetically; Subsequently, upper cover plate 1, battery core 3 and the insulating sleeve 10 be assembled together is made to pass the peristome of lower house 2 together and be encapsulated in lower house body, the peristome of lower house against the outer region of outer cover plate 1a, the peristome of lower house and the outer region of outer cover plate by the method for such as welding to be connected hermetically.
Electrolyte inlet is used for injecting electrolyte by it to battery core 3 and the inside space of insulating sleeve 10.After filling electrolyte, adopt the glue sealing of electrolyte resistance, thus reach the object of isolation upper cover plate and inner cover plate.
In addition, the electrokinetic cell of one embodiment of the invention also comprises the anti-riot diaphragm seal 11 be arranged on for electrolyte and explosion-proof valve being kept apart in inner cover plate.This anti-riot diaphragm seal 11 can raise at cell internal pressure and be broken through by air pressure, thus does not affect the opener of explosion-proof valve.Anti-riot diaphragm seal 11 adopts gluing or welding or the fixing mode of auxiliary component to be fixed in inner cover plate.Alternatively, anti-riot diaphragm seal can 11 to be formed together with inner cover plate.Anti-riot diaphragm seal 11 is made up of polypropylene material.Those skilled in the art it is easily understood that anti-riot diaphragm seal 11 can also be made up of other insulating material, for electrolyte and explosion-proof valve are kept apart.
Fig. 4 shows the perspective view of another example of insulating sleeve of Fig. 2 medium power battery.As shown in Figure 4, insulating sleeve 100 comprises insulating sleeve body 100a, insulating sleeve peristome 100b, insulating sleeve opening edge portion 100c and insulating sleeve choke 100d.Insulating sleeve choke 100d is connected between insulating sleeve opening edge portion 100c and edge sheath body 100a to seamlessly transit mode.Insulating sleeve body 100a comprises bottom and sidepiece.Insulating sleeve body 100a forms encapsulated space together with insulating sleeve choke 100d.When battery assembling uses, make to be equipped with the first lug 4a and be encapsulated in insulating sleeve body 100a with the battery core 3 of the second lug 4b through insulating sleeve peristome 100b and formed in encapsulated space together with insulating sleeve choke 100d.The assembling of the insulating sleeve of the electrokinetic cell shown in all the other step with Fig. 3 is identical.
Another specific embodiment of the present invention proposes a kind ofly prepares the above-mentioned method reducing the battery of sheath voltage, battery shell and the battery core 3 with the first lug 4a and the second lug 4b, wherein:
Make to be assemblied in insulating sleeve 10,100 with the first lug 4a and the battery core 3 of the second lug 4b and insulating sleeve 10,100 is connected in a sealing fashion with the upper cover plate 1 of shell, and
The upper cover plate 1 of the battery core 3 with the first lug 4a and the second lug 4b making to be assembled together, insulating sleeve 10,100 and shell is packaged in the lower house 2 of shell together and the lower house 2 of shell is connected in a sealing fashion with the upper cover plate 1 of shell.
In one embodiment of the invention, insulating sleeve 10 and 100 is made up of polypropylene.Those skilled in the art, it is easily understood that insulating sleeve 10 and 100 can also be made up of other insulating material, can not penetrate and corrode this insulating sleeve to make electrolyte.
The benefit of battery of the present invention is, because insulating sleeve makes electrolyte only contact with negative pole 6 with positive pole 5 not with the housing contacts of battery, thus the voltage reducing or eliminate between shell and electrode.
The benefit of battery of the present invention is also, for the insulating sleeve with insulating sleeve choke, when equal battery case size, can make full use of the inner space of battery, add the volume of battery core, thus improve the energy density of battery.
Claims (20)
1. one kind can be reduced the battery of sheath voltage, it comprises shell and the battery core with the first lug and the second lug, it is characterized in that, battery also comprises the insulating sleeve be arranged between shell and battery core, to be assemblied in insulating sleeve with the first lug and the battery core of the second lug and insulating sleeve is connected in a sealing fashion with the upper cover plate of shell, the upper cover plate of the battery core with the first lug and the second lug be assembled together, insulating sleeve and shell is packaged in the lower house of shell together and the lower house of shell is connected in a sealing fashion with the upper cover plate of shell.
2. battery according to claim 1, it is characterized in that, the upper cover plate of shell comprises the insulation inner cover plate of the below of conducting electricity outer cover plate and being arranged on conduction outer cover plate, insulating sleeve comprises insulating sleeve body, insulating sleeve peristome and insulating sleeve opening edge portion, the lower house of shell comprises lower house body and lower house peristome, battery core with the first lug and the second lug is assemblied in insulating sleeve body through insulating sleeve peristome and insulating sleeve opening edge portion, and insulating sleeve opening edge portion is connected in the outer region of insulation inner cover plate in a sealing fashion, the battery core with the first lug and the second lug be assembled together, the upper cover plate of insulating sleeve and shell is encapsulated in lower house body through lower house peristome together, lower house peristome is connected with conduction outer cover plate in a sealing fashion.
3. battery according to claim 2, it is characterized in that, insulating sleeve also comprises insulating sleeve choke, insulating sleeve choke is connected between insulating sleeve opening edge portion and insulating sleeve body to seamlessly transit mode, and insulating sleeve choke forms the encapsulated space for assembling battery core together with insulating sleeve body.
4. battery according to claim 1, it is characterized in that, battery also comprises positive pole, negative pole, first lug brace, second lug brace, explosion-proof valve and electrolyte inlet, positive pole and negative pole spaced apart and be connected on upper cover plate in the mode be electrically insulated from each other, first lug brace is relative with positive pole and negative pole respectively with the second lug brace and be electrically connected and be connected on upper cover plate in the mode be electrically insulated from each other, first lug and the second lug are electrically connected with the anode layer in battery core and negative electrode layer respectively, positive pole is electrically connected with the first lug by the first lug brace, negative pole is electrically connected with the second lug by the second lug brace, explosion-proof valve and electrolyte inlet are arranged on upper cover plate, electrolyte inlet is used for injecting electrolyte to the space in battery core, explosion-proof valve is used for making battery core electrolyte inside overflow via it when cell internal pressure increases.
5. battery according to claim 2, it is characterized in that, battery also comprises explosive-proof sealed film, explosive-proof sealed film is arranged in the insulation inner cover plate of upper cover plate, for the electrolyte in battery and explosion-proof valve are separated, explosive-proof sealed film can be broken through by air pressure when cell internal pressure raises, thus does not affect the unlatching of explosion-proof valve.
6. battery according to claim 2, it is characterized in that, battery also comprises explosive-proof sealed film, explosive-proof sealed film can be formed together with the insulation inner cover plate of upper cover plate, for the electrolyte in battery and explosion-proof valve are separated, explosive-proof sealed film can be broken through by air pressure when cell internal pressure raises, thus does not affect the unlatching of explosion-proof valve.
7. battery according to claim 4, is characterized in that, after injecting electrolyte via electrolyte inlet, adopts the glue sealing electrolyte inlet of electrolyte resistance, thus reaches the object of isolation upper cover plate and inner cover plate.
8. battery according to claim 4, is characterized in that, battery also comprises insulating cell, and positive pole and negative pole are connected on upper cover plate by insulating cell.
9. battery according to claim 2, it is characterized in that, insulating sleeve opening edge portion is crimping form, insulating sleeve opening edge portion extends along the direction being approximately perpendicular to insulating sleeve body or extends obliquely along with the insulating sleeve body direction that has a certain degree, when insulating sleeve opening edge portion along be approximately perpendicular to insulating sleeve body direction extend time, insulating sleeve opening edge portion against and be sealed to insulation inner cover plate outer region below on; When insulating sleeve opening edge portion along and insulating sleeve body have a certain degree direction extend obliquely time, insulation inner cover plate outer region there is rake, insulating sleeve opening edge portion against and be sealed to insulation inner cover plate outer region rake on.
10. battery according to claim 2, is characterized in that, insulating sleeve opening edge portion is straight flange form, insulating sleeve opening edge portion against and be sealed to insulation inner cover plate outer region outside on.
11. 1 kinds of methods preparing the battery that can reduce sheath voltage, battery shell and the battery core with the first lug and the second lug, is characterized in that,
Make to be assemblied in insulating sleeve with the first lug and the battery core of the second lug and insulating sleeve is connected in a sealing fashion with the upper cover plate of shell, and
The upper cover plate of the battery core with the first lug and the second lug making to be assembled together, insulating sleeve and shell is packaged in the lower house of shell together and the lower house of shell is connected in a sealing fashion with the upper cover plate of shell.
12. methods according to claim 11, it is characterized in that, the upper cover plate of shell comprises the insulation inner cover plate of the below of conducting electricity outer cover plate and being arranged on conduction outer cover plate, insulating sleeve comprises insulating sleeve body, insulating sleeve peristome and insulating sleeve opening edge portion, the lower house of shell comprises lower house body and lower house peristome, battery core is made to pass insulating sleeve peristome and insulating sleeve opening edge portion is assemblied in insulating sleeve body, and make insulating sleeve opening edge portion be connected in the outer region of insulation inner cover plate in a sealing fashion, and make the battery core that is assembled together, the upper cover plate of insulating sleeve and shell is encapsulated in lower house body through lower house peristome together, lower house peristome is connected with conduction outer cover plate in a sealing fashion.
13. methods according to claim 12, it is characterized in that, insulating sleeve also comprises insulating sleeve choke, insulating sleeve choke is connected between insulating sleeve opening edge portion and insulating sleeve body to seamlessly transit mode, and insulating sleeve choke forms the encapsulated space for assembling battery core together with insulating sleeve body.
14. methods according to claim 11, it is characterized in that, battery also comprises positive pole, negative pole, first lug brace, second lug brace, explosion-proof valve and electrolyte inlet, positive pole and negative pole spaced apart and be connected on upper cover plate in the mode be electrically insulated from each other, first lug brace is relative with positive pole and negative pole respectively with the second lug brace and be electrically connected and be connected on upper cover plate in the mode be electrically insulated from each other, first lug and the second lug are electrically connected with the anode layer in battery core and negative electrode layer respectively, positive pole is electrically connected with the first lug by the first lug brace, negative pole is electrically connected with the second lug by the second lug brace, explosion-proof valve and electrolyte inlet are arranged on upper cover plate, electrolyte inlet is used for injecting electrolyte to the space in battery core, explosion-proof valve is used for making battery core electrolyte inside overflow via it when cell internal pressure increases.
15. batteries according to claim 14, it is characterized in that, battery also comprises explosive-proof sealed film, explosive-proof sealed film is arranged in the insulation inner cover plate of upper cover plate, for the electrolyte in battery and explosion-proof valve are separated, explosive-proof sealed film can be broken through by air pressure when cell internal pressure raises, thus does not affect the unlatching of explosion-proof valve.
16. batteries according to claim 14, it is characterized in that, battery also comprises explosive-proof sealed film, explosive-proof sealed film can be formed together with the insulation inner cover plate of upper cover plate, for the electrolyte in battery and explosion-proof valve are separated, explosive-proof sealed film can be broken through by air pressure when cell internal pressure raises, thus does not affect the unlatching of explosion-proof valve.
17. batteries according to claim 14, is characterized in that, after injecting electrolyte via electrolyte inlet, adopt the glue sealing electrolyte inlet of electrolyte resistance, thus reach the object of isolation upper cover plate and inner cover plate.
18. batteries according to claim 14, it is characterized in that, battery also comprises insulating cell, and positive pole and negative pole are connected on upper cover plate by insulating cell.
19. batteries according to claim 12, it is characterized in that, insulating sleeve opening edge portion is crimping form, insulating sleeve opening edge portion extends along the direction being approximately perpendicular to insulating sleeve body or extends obliquely along with the insulating sleeve body direction that has a certain degree, when insulating sleeve opening edge portion along be approximately perpendicular to insulating sleeve body direction extend time, insulating sleeve opening edge portion against and be sealed to insulation inner cover plate outer region below on; When insulating sleeve opening edge portion along and insulating sleeve body have a certain degree direction extend obliquely time, insulation inner cover plate outer region there is rake, insulating sleeve opening edge portion against and be sealed to insulation inner cover plate outer region rake on.
20. batteries according to claim 12, is characterized in that, insulating sleeve opening edge portion is straight flange form, insulating sleeve opening edge portion against and be sealed to insulation inner cover plate outer region outside on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310273885.8A CN104282864B (en) | 2013-07-02 | 2013-07-02 | It can reduce or eliminate the battery of sheath voltage and prepare the method for the battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310273885.8A CN104282864B (en) | 2013-07-02 | 2013-07-02 | It can reduce or eliminate the battery of sheath voltage and prepare the method for the battery |
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| Publication Number | Publication Date |
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| CN104282864A true CN104282864A (en) | 2015-01-14 |
| CN104282864B CN104282864B (en) | 2017-08-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310273885.8A Active CN104282864B (en) | 2013-07-02 | 2013-07-02 | It can reduce or eliminate the battery of sheath voltage and prepare the method for the battery |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106953035A (en) * | 2017-03-30 | 2017-07-14 | 天津锦泰勤业精密电子有限公司 | Battery cover board assembly and the battery including the battery cover board assembly |
| CN110518174A (en) * | 2019-10-23 | 2019-11-29 | 比亚迪股份有限公司 | A kind of battery, battery modules, battery pack and electric vehicle |
| US10790544B1 (en) | 2019-10-23 | 2020-09-29 | Byd Company Limited | Lithium-ion battery, battery module, battery pack, and automobile |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102623650A (en) * | 2012-02-14 | 2012-08-01 | 东莞新能源科技有限公司 | Hard shell lithium ion battery |
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2013
- 2013-07-02 CN CN201310273885.8A patent/CN104282864B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102623650A (en) * | 2012-02-14 | 2012-08-01 | 东莞新能源科技有限公司 | Hard shell lithium ion battery |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106953035A (en) * | 2017-03-30 | 2017-07-14 | 天津锦泰勤业精密电子有限公司 | Battery cover board assembly and the battery including the battery cover board assembly |
| CN106953035B (en) * | 2017-03-30 | 2023-04-07 | 浙江锦泰电子有限公司 | Battery cover plate assembly and battery comprising same |
| CN110518174A (en) * | 2019-10-23 | 2019-11-29 | 比亚迪股份有限公司 | A kind of battery, battery modules, battery pack and electric vehicle |
| CN110518174B (en) * | 2019-10-23 | 2020-03-20 | 比亚迪股份有限公司 | Battery, battery module, battery pack and electric vehicle |
| US10777791B1 (en) | 2019-10-23 | 2020-09-15 | Byd Company Limited | Battery, battery module, battery pack and electric vehicle |
| US10790544B1 (en) | 2019-10-23 | 2020-09-29 | Byd Company Limited | Lithium-ion battery, battery module, battery pack, and automobile |
| CN112701412A (en) * | 2019-10-23 | 2021-04-23 | 比亚迪股份有限公司 | Battery, battery module, battery pack and electric vehicle |
| WO2021077564A1 (en) * | 2019-10-23 | 2021-04-29 | 比亚迪股份有限公司 | Battery, battery module, battery pack, and electric vehicle |
| US11258129B2 (en) | 2019-10-23 | 2022-02-22 | Byd Company Limited | Battery, battery module, battery pack and electric vehicle |
| US12015126B2 (en) | 2019-10-23 | 2024-06-18 | Byd Company Limited | Lithium-ion battery, battery module, battery pack, and automobile |
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|---|---|
| CN104282864B (en) | 2017-08-25 |
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