CN2717037Y - Lithium ion battery - Google Patents
Lithium ion battery Download PDFInfo
- Publication number
- CN2717037Y CN2717037Y CNU2004200340611U CN200420034061U CN2717037Y CN 2717037 Y CN2717037 Y CN 2717037Y CN U2004200340611 U CNU2004200340611 U CN U2004200340611U CN 200420034061 U CN200420034061 U CN 200420034061U CN 2717037 Y CN2717037 Y CN 2717037Y
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- CN
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- Prior art keywords
- battery
- lithium ion
- ion battery
- pole piece
- positive
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Y02E60/122—
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Abstract
The utility model relates to a lithium ion battery, which comprises a battery housing, a battery core composed of a stacked positive pole and a negative pole piece and a battery core fixture arranged inside the battery housing, wherein the battery core fixture is provided with a holding space; the battery core is arranged in the holding space; each pole piece is covered in a diaphragm bag which is provided with a micropore, and the conductive part of each pole piece extends out of the diaphragm bag; the conductive parts of the positive pole piece and the negative pole piece are connected with a positive pole post and a negative pole post of a battery through a connecting piece; the connecting piece is a soft connecting piece and is formed by the stacking of a plurality of layers of tinsels smaller than 0.2 millimeter; the soft connecting piece is in riveted connection with the conductive parts of the corresponding positive pole piece and the negative pole piece and is in screw connection with the pole posts of the battery. The battery core is tightly clamped by the battery core fixture, which prevents the battery from vibrating and prevents pole pieces from moving caused by mechanical shock, and the safety of the battery is enhanced consequently; the positive pole piece and the negative pole piece are covered in the diaphragm bag, which prevents the pole pieces of the battery from moving caused by improper external force to generate the situation that pole pieces of an upper layer and a lower layer are short-circuit.
Description
[technical field]
The utility model relates to the lithium ion battery field.
[background technology]
Existing rectangular lithium ion battery comprises pole piece and battery case, the square stepped construction of the general employing of pole piece, be separated by with diaphragm paper between pole piece and the pole piece, the pole piece two ends are connected and fixed with corrosion resistant plate or copper coin or nickel plate, the lug of pole piece also uses stainless steel substrates and stainless steel fastening, thereby improved the chemical property of high capacity cell, especially heavy-current discharge performance.But there is following shortcoming in this kind design: 1) because this battery only adopts fixture to fix at the lug position of pole piece two ends and positive and negative electrode, thereby when battery vibrates or falls, can make pole piece generation crimp because of pole piece fixing insecure, fall to expect even fracture, thereby influence the chemical property and the security performance of battery; 2) only separate between the pole piece of adjacent layer, so when being subjected to external force, pole piece is the easy play in two ends up and down, thereby causes short circuit between the pole piece with the strip barrier film.
[utility model content]
Main purpose of the present utility model is to provide a kind of lithium ion battery with preferable mechanical shock resistance and fail safe.
The purpose of this utility model is achieved in that this lithium ion battery comprises battery case and comprises the electric core of stacked positive and negative plate, it comprises that also the electric core that is installed in the battery case clamps tool, this electricity core clamps tool and is formed with receiving space, and electric core is installed in this receiving space.
Also comprise the diaphragm bag with micropore, each diaphragm bag coats corresponding pole piece, and the current-carrying part of pole piece stretches out diaphragm bag, and the current-carrying part of positive and negative plate lays respectively at the two ends up and down of electric core, perhaps is positioned at electric core upper end or lower end simultaneously.
The current-carrying part of described positive and negative plate links to each other with the positive and negative electrode pole of battery by brace.
Described brace is soft brace; Described soft brace is by metal foil laminated form of thickness less than 0.2 millimeter.
The current-carrying part riveted joint of described soft brace and corresponding positive and negative plate is threaded with the pole of battery.
Compared with prior art, the utlity model has following advantage: 1) the utility model lithium ion battery clamps tool by electric core and clamps electric core, the pole piece play when having prevented the battery vibration or being subjected to mechanical shock, thereby the fail safe that has improved battery; 2) by positive and negative plate is coated in the diaphragm bag, prevented that battery pole piece play when being subjected to improper external force from producing the situation of upper and lower layer pole piece short circuit; 3) because be to adopt soft brace to be connected between the exit of pole piece and the battery electrode column,, can prevent that the battery accident from opening circuit so have resiliency preferably; 4) because adopt riveted joint or bolt to be connected between brace and pole piece and the pole, so technology difficulty is little, connection reliably.
[description of drawings]
Fig. 1 is the forward cutaway view of the utility model lithium ion battery.
Fig. 2 is the side sectional view of the utility model lithium ion battery.
Fig. 3 is the front view of the utility model electrodes of lithium-ion batteries and diaphragm bag.
Fig. 4 is the front view that the electric core of the utility model lithium ion battery clamps the tool clamping plate.
Fig. 5 is the end view that the electric core of the utility model lithium ion battery clamps the tool clamping plate.
Fig. 6 is the vertical view that the electric core of the utility model lithium ion battery clamps the tool clamping plate.
Fig. 7 is the end view that the electric core of the utility model lithium ion battery clamps tool.
Fig. 8 is the vertical view that the electric core of the utility model lithium ion battery clamps tool.
[embodiment]
See also Fig. 1 to Fig. 3, the utility model lithium ion battery comprises that battery case 9, battery electrode column, electric core, electrolyte 8 and electric core clamp tool 10.This battery case 9 roughly is square, and generally is to be made by metal material.Battery electrode column comprises Positive Poles 1 and negative pole pole 2.The electricity core by some on the cell thickness direction positive and negative plate 5,6 of intersecting form, and the position of positive plate 5 of each layer and negative plate 6 aligns respectively.Each positive and negative plate 5,6 one ends have been equipped with the positive and negative electrode exit 3,4 of electric action, and the positive and negative electrode exit 3,4 of the positive and negative plate 5,6 of adjacent layer lays respectively at the upper and lower end of electric core, certainly, also can be positioned at the upper end or the lower end of electric core simultaneously.Each positive and negative plate 5,6 coats by barrier film, wherein positive plate 5 is to sandwich in polyethylene micropore barrier film or polypropylene and the polyethylene lamination micro-pore septum, this barrier film forms diaphragm bag 7 by welding in its position corresponding to positive plate 5 edges, this weld forms weld seam 13, exit 3 stretches out this diaphragm bag 7 certain-lengths, this welding can be adopted modes such as high frequency weldering, supersonic welding, electric resistance welding or Laser Welding, preferably adopts the high frequency weldering.Negative plate 6 also is to sandwich in the micro-pore septum of polyethylene micropore barrier film or polypropylene and polyethylene lamination, and this barrier film also is to form diaphragm bag by welding in its position corresponding to negative plate 6 edges.The diaphragm bag that above-mentioned each is equipped with positive plate 5 or negative plate 6 is an intersecting, and forms the electric core of this lithium ion battery.
Please in conjunction with consulting Fig. 4 to Fig. 8, the shape of electric core clamping tool 10 is similar to the shape of battery case 9, and it comprises train wheel bridge 101, lower plate 102 and connector.The structure of these upper and lower clamping plate 101,102 is identical, it includes square substrate 1011, two lateral margins of this substrate 1011 are distinguished the side plates 1012 that extend downwards certainly, and be positioned at the installation portion 1013 of these side plate 1012 vertical cantilever-shaped extensions in two ends, the surface that this substrate 1011 and side plate 1012 have continuous whole, and these substrate 1011 surfaces have strengthening groove 1016, and this installation portion 1013 is the uncinus to the bending of substrate 1011 directions.Be formed with groove 1014 between substrate 1011 and two side plates 1012, form receiving space 1015 between the groove of upper and lower clamping plate 101,102, the electricity core is to be installed in this receiving space 1015, and by the constraint of substrate 1011 and side plate 1012 it can not be moved freely in electric core clamps tool 10.The degree of depth sum of two grooves of upper and lower clamping plate 101,102 should be not less than the thickness of electric core, and preferably the degree of depth sum of two grooves equals the thickness of electric core.When upper and lower clamping plate 101,102 are installed, separately groove and installation portion aligned, and the installation portion 1013 of upper and lower clamping plate is coupled together, thereby make upper and lower clamping plate 101,102 fastening one by connector.In the present embodiment, this connector is the pinching screw and the binding nut of threaded engagement.Certainly, side plate also can be only extends downwards in a lateral margin of substrate, and makes these upper and lower clamping plate all roughly be " L " type.
After electric core being installed on the receiving space 1015 of this electricity core clamping tool 10, the respectively exit 3,4 of each positive and negative plate 5,6 in the electric core is coupled together with positive and negative electrode brace 11,12 again, the other end with positive and negative electrode brace 11,12 is connected with negative pole pole 2 with the Positive Poles 1 of battery respectively then, to form the current collection structure, wherein being riveted joint between positive and negative electrode brace 11,12 and each positive and negative plate 5,6, is the bolt connection between positive and negative electrode brace 11,12 and the corresponding positive and negative electrode pole 1,2.This positive and negative brace 11,12 is soft brace, and this soft brace the 11, the 12nd is formed less than 0.2mm metal foil laminated by multi-layered thickness.This electric core that is fastened with electric core is clamped tool 10 be fixedly installed in the battery case 9, subsequently electrolyte 8 is injected battery cases 9, sealing and make lithium ion battery.Because this electricity core clamps tool 10 and only contacts with the outermost surface of electric core, so not influence of electrolyte flow to inside battery, and all has micropore owing to coat the bag film 7 of positive and negative plate 5,6, so can not influence electrolyte flow between the positive and negative plate 5,6.
Described positive pole contains the composite oxides of a kind of lithium and transition metal, and they are the active materials with certain ad hoc structure, can carry out reversible reaction with lithium ion.The example of this type of active material comprises a kind of or its mixture: the Li in the following material
xNi
1-yCoO
2(wherein, 0.9≤x≤1.1,0≤y≤1.0), Li
xMn
2-yB
yO
2(wherein, B is a transition metal, 0.9≤x≤1.1,0≤y≤1.0) etc.In addition, positive plate also contains the electrode current collecting body (being generally aluminium foil), carbon-based material conductive agent of metal material and positive electrode is bonded to adhesive on the electrode current collecting body.The example of described carbon-based material conductive agent comprises carbon black, carbon fiber and graphite etc., can select one of them or its mixture for use.Examples of adhesives comprises fluorine resin and polyolefin compound such as PVDF, PTFE, VDF-HFP-TFE copolymer, SBR etc., can select one of them or its mixture for use.
Described negative electrode active material is for can make lithium ion embed and take off the carbon-based material of embedding repeatedly.The example of this type of active material comprises: graphite, petroleum coke, organic cracking carbon, MCMB, MCF etc., can select one of them or its mixture for use.In addition, negative pole also contains the electrode current collecting body (being generally Copper Foil) of metal material and negative material is bonded to adhesive on the electrode current collecting body.Examples of adhesives comprises fluorine resin and polyolefin compound such as PVDF, PTFE, VDF-HFP-TFE copolymer, SBR etc., can select one of them or its mixture for use.
Anode and cathode slurry is by a kind of suitable bonding being dissolved in the specific solvent, adding active material and conductive agent again, making after disperseing fully.Specific solvent of the present invention is selected from NMP, DMF, DEF, DMSO, THF and water and alcohols etc., can use one of them or its mixture.
Described electrolyte is the mixed solution of electrolytic salt and solvent.Electrolytic salt is a lithium salts, and example comprises LiClO
4, LiPF
6, LiBF
4, LiAsF
6, lithium halide, chlorine lithium aluminate, fluorocarbon based fluorine oxygen lithium phosphate and fluorocarbon based sulfonic acid lithium etc., can use one of them or its mixture.Solvent is selected chain acid esters and ring-type acid esters mixed solution for use, chain acid esters example comprises that DMC, DEC, EMC, MPC, DPC, MA, EA, PA, dimethoxy-ethane and other are fluorine-containing, sulfur-bearing or contain the chain organosilane ester of unsaturated bond, can use one of them or its mixture.Ring-type acid esters example comprises that EC, PC, VC, γ-BL, sultone and other are fluorine-containing, sulfur-bearing or contain the ring-type organosilane ester of unsaturated bond, can use one of them or its mixture.
When making positive plate, a certain amount of positive active material, conductive agent, adhesive and solvent fully are mixed and made into anode sizing agent with certain ratio, this slurry is coated on the plus plate current-collecting body equably, obtain positive plate after drying, the calendering; Dressing layer with this positive plate ora terminalis scrapes off again, exposes the anodal exit of certain width; Positive plate with moulding sandwiches in polypropylene micro-pore septum or polypropylene and the polyethylene lamination micro-pore septum at last, and forms diaphragm bag by welding on the barrier film outside the positive plate edge.
When making negative plate, a certain amount of negative electrode active material, adhesive and solvent fully are mixed and made into cathode size with certain ratio, this slurry is coated on the negative current collector equably, obtain negative plate after drying, the calendering; Dressing layer with this negative plate ora terminalis scrapes off again, exposes the negative pole exit of certain width; Negative plate with moulding sandwiches in polypropylene microporosity barrier film or polypropylene and the polyethylene lamination microporosity barrier film at last, and forms diaphragm bag by welding on the barrier film outside the negative plate edge.
Be the concrete manufacturing process of an embodiment of the utility model lithium ion battery down: a certain amount of PVDF is dissolved among the NMP with certain ratio, with LiCoO
2Add in this solution with acetylene black, fully be mixed and made into slurry, it consists of LiCoO
2: acetylene black: PVDF=92: 4: 4.This slurry is coated on equably on the aluminium foil of 20 μ m, dry down in 120 ℃.Obtain the positive plate that thickness is 120 μ m after the calendering.Dressing layer with this positive plate ora terminalis scrapes off again, exposes the aluminium foil exit of wide 10mm.The pole piece of moulding sandwiches in the two layers of polypropylene microporosity barrier film, and the barrier film outside the pole piece edge forms diaphragm bag with the high frequency welding.
A certain amount of PVDF is dissolved among the NMP with certain ratio, Delanium is added in this solution, fully be mixed and made into slurry, it consists of Delanium: PVDF=95: 5.Again this slurry is coated on the Copper Foil of 20 μ m equably, dry down in 120 ℃.Obtain the negative plate that thickness is 120 μ m after the calendering.Dressing layer with this negative plate ora terminalis scrapes off again, exposes the Copper Foil exit of wide 10mm.Positive plate 5, the negative plate 6 of moulding are sandwiched in the two layers of polypropylene microporosity barrier film, and the barrier film outside the pole piece edge forms diaphragm bag with the high frequency welding.
With the staggered electric core that builds up a lithium ion battery of the positive and negative plate of above-mentioned envelope, the electric core that the electricity core constitutes with as shown in Figure 1 upper and lower clamping plate clamp tool 10 fastening after, connect each pole piece exit and battery electrode column with soft brace again, to form the current collection structure.Wherein brace and pole piece are riveted structure, and brace is that bolt is connected with pole.Electric core is packed in the battery case 8, subsequently with LiPF
6Press 1mol/dm
3Concentration be dissolved in EC/DMC=1: formed electrolyte injects battery case in 1 the mixed solvent, and the lithium ion battery of present embodiment is made in sealing.
Be down the performance comparison of lithium ion battery and other battery of present embodiment:
Comparative example 1
Commercially available takeup type 063048 lithium ion battery
Comparative example 2
Use and the similar method of present embodiment, but do not make the electricity consumption core clamp the lithium ion battery of tool.
Comparative example 3
Use and the similar method of present embodiment, but adopt the thick metallic plate of 0.6mm to connect the lithium ion battery of each pole piece exit and battery electrode column.
Be down the battery behavior test result:
[self-discharge performance]
Present embodiment, comparative example 1 battery to 4.2V, after rising to 4.2V, voltage with constant-potential charge, are reduced to 0.05CA by electric current with the 1CA current charges.Battery after the charging stores a week for 60 ℃, measures battery with the capacity of 1CA current discharge to 3.0V.
The self-discharge performance test result:
| Initial capacity | Store the back capacity | Capability retention | |
| Execution mode 1 | 14.5Ah | 13.3Ah | 91.7％ |
| Comparative example 1 | 850mAh | 716mAh | 84.3％ |
[shock resistance]
To implement, comparative example 2, comparative example 3 batteries with the 1CA current charges to 4.2V, after voltage rises to 4.2V with constant-potential charge, be reduced to 0.05CA by electric current, constant current with 0.5CA discharged 100 minutes again, do the shock-testing of 10G acceleration then at three in-planes of battery, the probability of record battery short circuit heating.Battery after the test to 3.0V, writes down the capacity of battery with the 1CA current discharge, and detects internal resistance.
The shock resistance test result:
| Impact short circuit ratio | The internal resistance mutation rate | The capacity mutation rate | |
| Execution mode 1 | 0 | 0 | 0 |
| Comparative example 2 | 2％ | 1％ | 3％ |
| Comparative example 3 | 0 | 2.5％ | 5％ |
According to above test result as seen, the utility model lithium ion battery is compared with comparative example 2 and the comparative example 3 not doing to improve fully with commercially available coiled battery, and the self-discharge performance of battery obviously improves, and has very strong anti-mechanical shock ability.
The utility model lithium ion battery clamps tool by electric core and clamps electric core, the pole piece play when having prevented the battery vibration or being subjected to mechanical shock, thereby the fail safe that has improved battery; By positive and negative plate is coated in the diaphragm bag, prevented that battery pole piece play when being subjected to improper external force from producing the situation of upper and lower layer pole piece short circuit; Because be to adopt soft brace to be connected between the exit of pole piece and the battery electrode column,, can prevent that the battery accident from opening circuit so have resiliency preferably; Because adopt riveted joint or bolt to be connected between brace and pole piece and the pole,, connect reliably so technology difficulty is little; Because drawing of battery positive and negative electrode do not rely on battery case, so can avoid unexpected electric leakage.
Claims (10)
1. lithium ion battery comprises battery case and comprises the electric core of stacked positive and negative plate that it is characterized in that: comprise that also the electric core that is installed in the battery case clamps tool, this electricity core clamps tool and is formed with receiving space, and electric core is installed in this receiving space.
2. lithium ion battery as claimed in claim 1, it is characterized in that: described electric core clamps tool and comprises interconnective train wheel bridge and lower plate, at least one of upper and lower clamping plate are provided with groove, and this groove forms receiving space, and the degree of depth of this receiving space is more than or equal to the thickness of electric core.
3. lithium ion battery as claimed in claim 2 is characterized in that: described upper and lower clamping plate have the surface of continuous whole.
4. lithium ion battery as claimed in claim 3 is characterized in that: the side plate that described upper and lower clamping plate include substrate and extend from this substrate lateral margin, groove shaped is formed between this substrate and the side plate.
5. as any described lithium ion battery of claim 1-4, it is characterized in that: also comprise the diaphragm bag with micropore, each diaphragm bag coats corresponding pole piece, and the current-carrying part of pole piece stretches out diaphragm bag.
6. lithium ion battery as claimed in claim 5 is characterized in that: the described diaphragm bag intersecting that pole piece is housed, and the current-carrying part of positive and negative plate lays respectively at the two ends up and down of electric core, perhaps is positioned at electric core upper end or lower end simultaneously.
7. as any described lithium ion battery of claim 1-4, it is characterized in that: the current-carrying part of described positive and negative plate links to each other with the positive and negative electrode pole of battery by brace.
8. lithium ion battery as claimed in claim 7 is characterized in that: described brace is soft brace.
9. lithium ion battery as claimed in claim 8 is characterized in that: the current-carrying part riveted joint of described soft brace and corresponding positive and negative plate is threaded with the pole of battery.
10. lithium ion battery as claimed in claim 8 is characterized in that: described soft brace is by metal foil laminated form of thickness less than 0.2 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2004200340611U CN2717037Y (en) | 2004-06-11 | 2004-06-11 | Lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2004200340611U CN2717037Y (en) | 2004-06-11 | 2004-06-11 | Lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2717037Y true CN2717037Y (en) | 2005-08-10 |
Family
ID=34871395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2004200340611U Expired - Lifetime CN2717037Y (en) | 2004-06-11 | 2004-06-11 | Lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2717037Y (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1992417B (en) * | 2005-12-29 | 2010-05-19 | 三星Sdi株式会社 | Cylinder type lithium ion secondary battery |
| WO2010124556A1 (en) * | 2009-04-30 | 2010-11-04 | Byd Company Limited | Single cell and power battery pack comprising the same |
| US8007935B2 (en) | 2006-10-30 | 2011-08-30 | Byd Co., Ltd. | Plate assembly, core and lithium ion battery |
| US8092936B2 (en) | 2007-12-25 | 2012-01-10 | Byd Co. Ltd. | Electrochemical cell having a coiled core |
| US8178225B2 (en) | 2007-11-29 | 2012-05-15 | Byd Co., Ltd. | Battery and preparation method thereof |
| US8178230B2 (en) | 2007-12-18 | 2012-05-15 | Byd Co., Ltd. | Battery pack |
| US8193770B2 (en) | 2007-12-25 | 2012-06-05 | BYD Co. Ltd | Battery system for a vehicle having an over-current/over-temperature protective feature |
| US8276695B2 (en) | 2007-12-25 | 2012-10-02 | Byd Co. Ltd. | Battery electrode sheet |
| CN102856583A (en) * | 2012-10-11 | 2013-01-02 | 山东天阳新能源有限公司 | Cylindrical coil core explosion-proof lithium ion battery and processing method |
| CN102856582A (en) * | 2012-10-11 | 2013-01-02 | 山东天阳新能源有限公司 | Square cell of lithium manganate aluminum shell and preparation method |
| CN103022571A (en) * | 2013-01-05 | 2013-04-03 | 山东久力电子科技有限公司 | Stacked square power lithium-ion battery |
| US8420254B2 (en) | 2007-12-25 | 2013-04-16 | Byd Co. Ltd. | End cover assembly for an electrochemical cell |
| CN109193033A (en) * | 2018-08-20 | 2019-01-11 | 湖南格瑞普新能源有限公司 | Soft package lithium ion battery |
| CN109402669A (en) * | 2018-12-19 | 2019-03-01 | 永兴县鸿福金属有限公司 | A kind of electrolytic lead preparation pole piece suspension arrangement |
| CN110085778A (en) * | 2019-05-30 | 2019-08-02 | 广东顺德工业设计研究院(广东顺德创新设计研究院) | Battery case, lithium ion battery and Li-ion batteries piles |
-
2004
- 2004-06-11 CN CNU2004200340611U patent/CN2717037Y/en not_active Expired - Lifetime
Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1992417B (en) * | 2005-12-29 | 2010-05-19 | 三星Sdi株式会社 | Cylinder type lithium ion secondary battery |
| US8007935B2 (en) | 2006-10-30 | 2011-08-30 | Byd Co., Ltd. | Plate assembly, core and lithium ion battery |
| US8178225B2 (en) | 2007-11-29 | 2012-05-15 | Byd Co., Ltd. | Battery and preparation method thereof |
| US8178230B2 (en) | 2007-12-18 | 2012-05-15 | Byd Co., Ltd. | Battery pack |
| US8399116B2 (en) | 2007-12-25 | 2013-03-19 | Byd Co. Ltd. | Optimized dimensional relationships for an electrochemical cell having a coiled core |
| US8383257B2 (en) | 2007-12-25 | 2013-02-26 | Byd Co. Ltd. | Electrochemical storage cell with blow out vents |
| US8193770B2 (en) | 2007-12-25 | 2012-06-05 | BYD Co. Ltd | Battery system for a vehicle having an over-current/over-temperature protective feature |
| US8202644B2 (en) | 2007-12-25 | 2012-06-19 | Byd Co. Ltd. | Protection cover for an end cap assembly of a battery cell |
| US8276695B2 (en) | 2007-12-25 | 2012-10-02 | Byd Co. Ltd. | Battery electrode sheet |
| US10381632B2 (en) | 2007-12-25 | 2019-08-13 | Shenzhen Byd Auto R&D Company Limited | Construction of electrochemical storage cell with conductive bridge |
| US8092936B2 (en) | 2007-12-25 | 2012-01-10 | Byd Co. Ltd. | Electrochemical cell having a coiled core |
| US9741996B2 (en) | 2007-12-25 | 2017-08-22 | Byd Co. Ltd. | Construction of electrochemical storage cell |
| US8865335B2 (en) | 2007-12-25 | 2014-10-21 | Byd Co. Ltd. | Electrochemical storage cell |
| US8404379B2 (en) | 2007-12-25 | 2013-03-26 | Byd Co., Ltd. | Vehicle with a battery system |
| US10147930B2 (en) | 2007-12-25 | 2018-12-04 | Shenzhen Byd Auto R&D Company Limited | Construction of electrochemical storage cell with conductive block |
| US8420254B2 (en) | 2007-12-25 | 2013-04-16 | Byd Co. Ltd. | End cover assembly for an electrochemical cell |
| US8722240B2 (en) | 2009-04-30 | 2014-05-13 | Byd Company Limited | Single cell and power battery pack comprising the same |
| WO2010124556A1 (en) * | 2009-04-30 | 2010-11-04 | Byd Company Limited | Single cell and power battery pack comprising the same |
| CN102856582A (en) * | 2012-10-11 | 2013-01-02 | 山东天阳新能源有限公司 | Square cell of lithium manganate aluminum shell and preparation method |
| CN102856583A (en) * | 2012-10-11 | 2013-01-02 | 山东天阳新能源有限公司 | Cylindrical coil core explosion-proof lithium ion battery and processing method |
| CN103022571A (en) * | 2013-01-05 | 2013-04-03 | 山东久力电子科技有限公司 | Stacked square power lithium-ion battery |
| CN109193033A (en) * | 2018-08-20 | 2019-01-11 | 湖南格瑞普新能源有限公司 | Soft package lithium ion battery |
| CN109193033B (en) * | 2018-08-20 | 2024-03-26 | 湖南格瑞普新能源有限公司 | Soft package lithium ion battery |
| CN109402669A (en) * | 2018-12-19 | 2019-03-01 | 永兴县鸿福金属有限公司 | A kind of electrolytic lead preparation pole piece suspension arrangement |
| CN110085778A (en) * | 2019-05-30 | 2019-08-02 | 广东顺德工业设计研究院(广东顺德创新设计研究院) | Battery case, lithium ion battery and Li-ion batteries piles |
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| C14 | Grant of patent or utility model | ||
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