CN100405656C - Prismatic battery cell, battery having the same, and method of manufacturing the same - Google Patents
Prismatic battery cell, battery having the same, and method of manufacturing the same Download PDFInfo
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- CN100405656C CN100405656C CNB2004100868665A CN200410086866A CN100405656C CN 100405656 C CN100405656 C CN 100405656C CN B2004100868665 A CNB2004100868665 A CN B2004100868665A CN 200410086866 A CN200410086866 A CN 200410086866A CN 100405656 C CN100405656 C CN 100405656C
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- 238000004519 manufacturing process Methods 0.000 title description 3
- 238000003466 welding Methods 0.000 claims description 25
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 11
- 229910052759 nickel Inorganic materials 0.000 claims description 8
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 6
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 3
- 239000001569 carbon dioxide Substances 0.000 claims description 3
- 239000003792 electrolyte Substances 0.000 claims description 3
- 238000010894 electron beam technology Methods 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 238000005476 soldering Methods 0.000 description 6
- 238000002844 melting Methods 0.000 description 5
- 230000008018 melting Effects 0.000 description 5
- 229910052987 metal hydride Inorganic materials 0.000 description 5
- -1 nickel metal hydride Chemical class 0.000 description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000011244 liquid electrolyte Substances 0.000 description 1
- BFDHFSHZJLFAMC-UHFFFAOYSA-L nickel(ii) hydroxide Chemical compound [OH-].[OH-].[Ni+2] BFDHFSHZJLFAMC-UHFFFAOYSA-L 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000007751 thermal spraying Methods 0.000 description 1
Images
Classifications
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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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
A prismatic battery cell comprising a positive electrode group and a negative electrode group respectively connected to a positive current collector and a negative current collector, each of said positive electrode group and said negative electrode group comprising a plurality of positive and negative electrode plates, said positive and negative electrode groups being assembled such that the positive and negative electrode plates are alternately stacked with a separator interposed between adjacent positive and negative electrodes, wherein the electrode plates of one electrode group are stacked together and welded to the corresponding current collector substantially along the stacked portion of the electrode group and at least on the surface of said current collector remote from said electrode group.
Description
Invention field
The present invention relates to prismatic battery cell, the Battery And Its Manufacturing Methods of tool prismatic battery cell.Particularly, the rechargeable battery that the present invention relates to chargeable prismatic battery cell and have prismatic battery cell.More precisely, the present invention relates to have chargeable NiMH (nickel metal hydride) rechargeable battery of prismatic unit, it is not limited in this certainly.
Background technology
Be substantially prismatic the most common and the most normal relating to of battery unit, and be called as prismatic battery cell.Prismatic battery cell has a kind of distinctive prismatic, more precisely a kind of rectangular prism, a prismatic electrode group that is essentially rectangle that forms because battery unit is normally piled up abreast by a plurality of battery lead plates that are substantially rectangle.Each parallel electrode plate is connected on their current-collectors separately, and then is connected on their binding posts separately.
The accessory of electrode group, current-collector and binding post generally are encapsulated in the prismatic can, make that packaged battery unit global shape is prismatic, is called " prismatic battery cell " therefrom.A prismatic battery generally comprises a plurality of being arranged in parallel and the whole prismatic battery cell that links together, and makes this battery equally also on the whole for prismatic.Yet, be appreciated that term " prismatic battery cell " generally is meant the battery unit of the battery lead plate with a plurality of stacked in parallel, these battery lead plates are electrically connected along their corresponding transverse sides, to be different from cylindrical battery cells, wherein each electrode group of cylindrical battery cells comprises a plurality of battery lead plates that are substantially cylindrical surface of a spirality or helical disk coiled.
In this manual, term " prismatic battery cell " does not also mean that its qualification or is restricted to prismatic battery unit, comprise the battery unit with positive and negative electrode group and can expand to generally, it has that a plurality of ends connect and the battery lead plate of the non-electric-connecting stacked in parallel of the opposite other end.The battery lead plate of this positive and negative electrode group is alternately to pile up mutually, and has passed the opening of this respective electrode group before being connected to corresponding current-collector.Should be appreciated that it is very common that prismatic battery cell has the rectangular electrode plate, basic but battery lead plate is a rectangle is not again the sin qua non.
Battery with prismatic unit is generally used for big current applications or need is applied to the occasion of high power density.For example, the chargeable prismatic battery such as nickel metal hydride (NiMH) battery has been widely used in the power resources of electric motor car (EV) or hydrogen power electric motor car (HEV) in recent years, because they have the characteristic of high-energy-density.
Usually, electric energy is that the generation chemical reaction produces between the positive and negative electrode group in the liquid electrolyte by being in, and at first passes to load by binding post then by current-collector.In a lot of batteries, the contact point between battery lead plate and the current-collector is the important source of battery internal resistance.Higher interior resistance means the high energy loss and can introduce heat dissipation problems that this is because the junction point between battery lead plate and current-collector will produce heat.This energy loss and heating are for big current applications, for example for the occasion of electric motor car or hydrogen power electric motor car, be unwelcome especially, this is because it can have a negative impact to efficient, and avoid premature damage or battery to damage in order to prevent overheated, inner caloric requirement suitably dissipates away.
US6,544,684 have described a kind of prismatic battery, and wherein collector plate vertically is welded in the side of battery lead plate at the inner surface length direction of the current-collector of close battery lead plate along a plurality of selected zones.
US6,457,667 attempt to use thermal spraying craft that electrode and current-collector are coupled together.
Yet common battery unit structure is not what be entirely satisfactory, still needs prismatic battery cell and battery with this battery unit are improved.
Summary of the invention
According to the present invention, a kind of prismatic battery cell is provided, comprise a positive electrode group and a negative electrode group of being connected on a positive current-collector and the negative current-collector, each described positive electrode group comprises a plurality of positive electrode plates, each described negative electrode group comprises a plurality of negative electrode plates, described positive and negative electrode assembling is made into positive-negative electrode plate is alternately piled up, and between adjacent positive and negative electrode, insert dividing plate, wherein, the battery lead plate of an electrode group is superimposed, and be welded on the corresponding current-collector, this welding is substantially along the overlapping portion of electrode group, and is positioned at least on the surface away from the described current-collector of described electrode group, and described current-collector comprises the groove of a strip, wherein accommodate the overlapping portion of described electrode group, described electrode group is welded on the described current-collector along described groove substantially.
Preferably, described current-collector is inverted "L" shaped, and described groove is on the long one side of described current-collector, and the binding post of electrode group is on the short one side of current-collector.
Preferably, described groove is parallel to the long side stretching, extension of described battery lead plate substantially.
Preferably, described groove is near the center of described current-collector.
Preferably, described groove is along the length direction extending longitudinally of described current-collector.
Preferably, the width of described current-collector is equivalent to or greater than the stack thickness of described electrode group.
Preferably, this welding portion of described current-collector and described battery lead plate has the cross section that is substantially T shape.
Preferably, the thickness of described current-collector is greater than the thickness that is suitable for the welding of electron beam welding or carbon dioxide laser.
Preferably, describedly be welded as arc-welding, comprise inert gas-shielded arc welding.
Preferably, described battery unit is the chargeable nickel metal battery unit with alkaline electrolyte.
Preferably, the overlapping portion of described electrode group is clipped between the described current-collector.
Preferably, described cell seal is a plastic casing inside, and described current-collector is connected on the binding post that is exposed at described plastic casing outside, and the cross-sectional width of described binding post is suitable with the width of the battery lead plate that piles up.
Description of drawings
Below with reference to accompanying drawings in the mode of example to a preferred embodiment of the present invention will be described in detail, wherein:
What Fig. 1 showed is stacked in parallel a plurality of positive-negative electrode plates together,
Figure 1A is the plan view from above of stacked electrodes plate shown in Figure 1,
What Fig. 2 showed is that stacked electrodes plate shown in Figure 1 is superimposed as a positive electrode group and a negative electrode group,
Fig. 2 A shows is the plan view from above of the electrode group of stack shown in Figure 2,
What Fig. 3 A showed is to comprise the positive and negative electrode group, the part exploded of first preferred embodiment of an accessory of current-collector and binding post,
Fig. 3 B is the accessory of Fig. 3 A and the part exploded view of a prismatic battery cell shell,
What Fig. 4 A showed is to comprise the positive and negative electrode group, the part exploded of second preferred embodiment of an accessory of current-collector and binding post,
Fig. 4 B is the accessory of Fig. 4 A and the part exploded view of a prismatic battery cell shell,
What Fig. 5 A showed is to comprise the positive and negative electrode group, the part exploded of the 3rd preferred embodiment of an accessory of current-collector and binding post,
Fig. 5 B is the accessory of Fig. 5 A and the part exploded view of a prismatic battery cell shell,
What Fig. 6 showed is the prismatic battery that comprises a prismatic battery cell of the present invention.
Embodiment
In the following description of this specification, describe as a suitable example with a nickel metal hydride (NiMH) battery, because the nickel metal hydride rechargeable battery has been widely used, and knownly under reasonable prices, has the high energy density characteristic and have rational battery life.Yet, should be appreciated that to be without loss of generality to those skilled in the art that this specification has been done necessary improvement to the prismatic battery of other type, especially for chargeable prismatic battery.
What Fig. 1 showed is the positive-negative electrode plate of the parallel insertion of a pile, is inserted with dividing plate between the wherein adjacent battery lead plate.Battery lead plate is divided into a positive electrode group 10 and a negative electrode group 20, and wherein the positive electrode group comprises a plurality of positive electrode plates 11 with positive leader 12, and the negative electrode group comprises a plurality of negative electrode plates 21 with negative leader 22.Described positive and negative electrode concentrates in together the electrode group that forms a prismatic unit.Electrode group 10,20 is arranged to make positive electrode plate 11 and negative electrode plate 21 to interlock, and is inserted with a dividing plate 30 between each is to positive-negative electrode plate.
Each battery lead plate comprises an effective coverage 40 and a guidance field 50.The corresponding effective coverage of a pair of positive and negative plate is arranged in juxtaposition, and reaction converts chemical energy to electric energy under the situation that electrolyte exists.The effective coverage 40 of the battery lead plate of a typical prismatic battery cell is substantially rectangle, and it is long or side and leader 50 are arranged in juxtaposition longitudinally.Leader 50 generally is a strip, and has the length same with vertical side of effective coverage, is substantially rectangle simultaneously.The rectangle effective coverage of battery lead plate is formed by a rectangular foundation material usually, so effective coverage 40 and leader 50 have same substantially length.Of course it is to be understood that the effective coverage is generally rectangle, but this is not the sin qua non's, the shape outside the rectangle can be used in the effective coverage, and this also is without loss of generality.
In a nickel metal hydride rechargeable battery, the effective coverage of positive electrode plate is made up of a kind of nickel foam metal that is coated with nickel hydroxide.Battery lead plate is generally very thin to reduce material cost and weight, and this reacts because of electric charge and comes down to carry out from the teeth outwards.Current-collector normally has the nickel-clad copper or the steel of good thermal conductivity and conductivity.For prismatic battery cell, its battery lead plate is solder-connected on the current-collector by electron beam welding or carbon dioxide laser, and current-collector generally is the nickel-plated sheet that approaches, and this is because actual melt run is the close surperficial back that is positioned at the source of welding current.Because this collector plate has a very little cross-sectional area, so they are not effective especially for heat conduction and conduction.Be welded at battery lead plate on the position of current-collector, there is higher resistance usually in solder joint, thereby the conduction of current-collector can not very be loose except that disadvantageous heat effectively.
In the present invention, the leader 50 of battery lead plate at first is superimposed.Stack herein is not restricted to the crimping of electrode group leader separately, and packing is gathered, welding or fastening.The leader of stack can be by soldering, welding or further keep such as the mechanical means of riveting.In addition, before leader was superimposed, the electrode group had been to have formed staggered structure with a kind of relation that closely compresses and adjacent battery lead plate usually.
With reference to Fig. 3 A to 5B, the electrode group of stack and current-collector and binding post integral body are assembled together.Accessory is inserted in the prismatic can.
With reference to Fig. 3 A and 3B, demonstration be the preferred embodiment of a prismatic battery cell of the present invention.At first with reference to Fig. 3 A, battery lead plate is in the insert structure state of stacked in parallel, makes the battery lead plate of same electrode group be superimposed on together along the outside of leader and long free margins.This stack can be passed through, and for example the freedom of the leader of battery lead plate is crimped on together longitudinally or than long side machinery.This stack can be further by the melting welding or the soldering of the overlay edge of battery lead plate, or, for example,, and strengthened by riveted joint by other mechanical fixation.After the electrode group had been superimposed, the electrode group just had been connected on the current-collector.
The current-collector 60 of this preferred embodiment comprises two parts.First 61 comprises a leading body element 61, and it is substantially L shaped, and has one from falling the columniform substantially binding post 70 that the upper surface 62 of short curved end of L shaped leading body element stretches out.The part of the long side 63 of leading body element is vertically stretched out along the whole length of long side 63 of leading body element substantially, when making down the long side of L shaped leading body see from its horizontal direction, also have one L shaped.
The installation of accessory is described below, comprises overlay electrode group and current-collector, the long or horizontal side of the electrode group of stack at first with the long lateral longitudinal of the leading body element of current-collector to aliging.The second portion 64 of current-collector 60 passes through then, and for example anchor clamps are located, and makes vertical overlapping portion of electrode group be clamped in securely between the breach that forms between the first 61 of current-collector and the second portion 64.Overlapping portion is then substantially along its whole length melting welding or be soldered on the current-collector, make the electrode overlapping portion two transverse sides respectively soldering in first and second parts of current-collector.
Be electrically connected by constituting along the whole length of overlapping portion basically, and electrically contact, can obtain better conductivity and thermal conductivity basically by between both sides, constituting near the current-collector of overlapping portion.
In addition, carry out and battery lead plate is superimposed because melting welding or soldering are preceding or outer surfaces along current-collector, melting welding can be controlled better, and the too early fusing of battery lead plate can not become subject matter.
In addition, because overlapping portion is clipped between the breach that forms between first and second parts of current-collector when welding, and welding also occurs on the preceding or outer surface of current-collector, thereby the leading body element can be enough thick, in order to improving thermal conductivity and conductivity, provide simultaneously by current-collector and arrived binding post then so that the better passage of extraneous heat radiation thereby not only reduced interior resistance.After accessory had formed, accessory was inserted in the shell 80 that alkaline electrode is housed, and this shell can seal by seal operation then.Should be noted that shell is prismatic substantially, make that the battery unit of sealing also is prismatic substantially.
With reference to Fig. 4 A and 4B, demonstration be second preferred embodiment of the present invention.The prismatic cellular construction of second preferred embodiment is identical with first preferred embodiment shown in Fig. 3 A and the 3B substantially.In the following explanation, identical Reference numeral will be done suitable expansion.
With reference to Fig. 4 A and 4B, current-collector is one and falls L shaped main member substantially, and it has a longitudinally extending groove of the major opposing side along current-collector, and current connector does not have a first and a second portion.Vertically groove 65 is suitable for closely holding overlapping portion, makes the overlapping portion of each electrode group closely be contained in wherein along groove.The leader of the stack of electrode group has been installed into after vertical groove, the stack leader of electrode group can melting welding or soldering on the major opposing side of current-collector.Because the leader of stack holds along groove, thereby welds and can carry out from the outer surface of current-collector, thereby can realize better and more economical welding.
With reference to Fig. 5 A and 5B demonstration is the 3rd preferred embodiment of the present invention, the current-collector of this preferred embodiment is identical with the cardinal principle of second preferred embodiment, but groove is stretched over the current collector body lower free end, makes that the overlapping portion of electrode group can be along the position that slides into welding from the longitudinally extending groove of the free end of current-collector.
With reference to Fig. 6, shown that wherein a plurality of prismatic unit in any one preferred embodiment is whole in conjunction with forming a prismatic battery that is presented in the example of the present invention in parallel substantially mode.
Though the present invention is illustrated by above preferred embodiment, be to be understood that embodiment helps the present invention is understood as example, the scope and spirit that are not meant to limit the present invention.This scope of invention should be decided by the above-mentioned overall principle of the present invention and spirit.Especially, concerning the personnel of affiliated technical field, tangible or little variation or change and should be considered to belong within scope of the present invention and the boundary based on improvement of the present invention.
In addition,, should be appreciated that under situation about being without loss of generality that no matter whether change, the present invention can be applied to other prismatic battery though the present invention is illustrated at the NiMH battery.
Claims (13)
1. prismatic battery cell, comprise a positive electrode group and a negative electrode group of being connected on a positive current-collector and the negative current-collector, each described positive electrode group comprises a plurality of positive electrode plates, each described negative electrode group comprises a plurality of negative electrode plates, described positive and negative electrode assembling is made into positive-negative electrode plate is alternately piled up, and between adjacent positive and negative electrode, insert dividing plate, wherein, the battery lead plate of an electrode group is superimposed, and be welded on the corresponding current-collector, this welding is substantially along the overlapping portion of electrode group, and be positioned at least on the surface away from the described current-collector of described electrode group, it is characterized in that described current-collector comprises the groove of a strip, wherein accommodate the overlapping portion of described electrode group, described electrode group is welded on the described current-collector along described groove substantially.
2. battery unit according to claim 1 is characterized in that, described current-collector is inverted "L" shaped, and described groove is on the long one side of described current-collector, and the binding post of electrode group is on the short one side of current-collector.
3. battery unit according to claim 1 is characterized in that, described groove is parallel to the long side of described battery lead plate substantially and stretches.
4. battery unit according to claim 1 is characterized in that, described groove is near the center of described current-collector.
5. battery unit according to claim 1 is characterized in that, described groove is along the length direction extending longitudinally of described current-collector.
6. battery unit according to claim 1 is characterized in that, the width of described current-collector is equivalent to or greater than the stack thickness of described electrode group.
7. battery unit according to claim 1 is characterized in that, this welding portion of described current-collector and described battery lead plate has the cross section that is substantially T shape.
8. battery unit according to claim 1 is characterized in that, the thickness of described current-collector is greater than the thickness that is suitable for the welding of electron beam welding or carbon dioxide laser.
9. battery unit according to claim 1 is characterized in that, describedly is welded as arc-welding, comprises inert gas-shielded arc welding.
10. battery unit according to claim 1 is characterized in that, described battery unit is the chargeable nickel metal battery unit with alkaline electrolyte.
11. battery unit according to claim 1 is characterized in that, the overlapping portion of described electrode group is clipped between the described current-collector.
12. battery unit according to claim 1 is characterized in that, described cell seal is a plastic casing inside, and described current-collector is connected on the binding post that is exposed at described plastic casing outside.
13. a prismatic battery comprises each prismatic battery cell of aforementioned claim.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| HK03107923.4 | 2003-11-03 | ||
| HK03107923 | 2003-11-03 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1614805A CN1614805A (en) | 2005-05-11 |
| CN100405656C true CN100405656C (en) | 2008-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100868665A Expired - Fee Related CN100405656C (en) | 2003-11-03 | 2004-11-02 | Prismatic battery cell, battery having the same, and method of manufacturing the same |
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| Country | Link |
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| CN (1) | CN100405656C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102576830A (en) * | 2009-06-05 | 2012-07-11 | K2能源处理公司 | Lithium ion battery pack having passive cooling |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102668177B (en) * | 2010-08-19 | 2015-06-03 | 株式会社杰士汤浅国际 | Power storage element provided with a current collector, and method of manufacturing current collector |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1291802A (en) * | 1999-03-22 | 2001-04-18 | 托马斯及贝茨国际股份有限公司 | Method of treating contact lead-wire on electrochemical cell so as to improve its sealing property and obtained sealed electrochemical cell |
| CN1336694A (en) * | 2000-07-28 | 2002-02-20 | 上海志乐科技开发有限公司 | Square metal hydride-nickel accumulator combination |
| JP2002170544A (en) * | 2000-11-29 | 2002-06-14 | Yuasa Corp | Battery |
| JP2002252036A (en) * | 2001-02-23 | 2002-09-06 | Mitsubishi Materials Corp | Lithium ion polymer secondary battery |
-
2004
- 2004-11-02 CN CNB2004100868665A patent/CN100405656C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1291802A (en) * | 1999-03-22 | 2001-04-18 | 托马斯及贝茨国际股份有限公司 | Method of treating contact lead-wire on electrochemical cell so as to improve its sealing property and obtained sealed electrochemical cell |
| CN1336694A (en) * | 2000-07-28 | 2002-02-20 | 上海志乐科技开发有限公司 | Square metal hydride-nickel accumulator combination |
| JP2002170544A (en) * | 2000-11-29 | 2002-06-14 | Yuasa Corp | Battery |
| JP2002252036A (en) * | 2001-02-23 | 2002-09-06 | Mitsubishi Materials Corp | Lithium ion polymer secondary battery |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102576830A (en) * | 2009-06-05 | 2012-07-11 | K2能源处理公司 | Lithium ion battery pack having passive cooling |
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| CN1614805A (en) | 2005-05-11 |
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| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: GP BATTERIES (DONGGUAN) CO.,LTD. Assignor: Ling Peizheng|Wu Chongan Contract record no.: 2010990000488 Denomination of invention: Prism battery unit, battery therewith and production thereof Granted publication date: 20080723 License type: Exclusive License Open date: 20050511 Record date: 20100705 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080723 |
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| CF01 | Termination of patent right due to non-payment of annual fee |