CN201408814Y - Battery - Google Patents
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- Publication number
- CN201408814Y CN201408814Y CN2009201571298U CN200920157129U CN201408814Y CN 201408814 Y CN201408814 Y CN 201408814Y CN 2009201571298 U CN2009201571298 U CN 2009201571298U CN 200920157129 U CN200920157129 U CN 200920157129U CN 201408814 Y CN201408814 Y CN 201408814Y
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- China
- Prior art keywords
- battery
- cavity
- composite plate
- casing
- periphery
- Prior art date
- 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
Links
- 239000002131 composite material Substances 0.000 claims abstract description 70
- 239000000758 substrate Substances 0.000 claims description 32
- 239000004033 plastic Substances 0.000 claims description 21
- 239000012528 membrane Substances 0.000 claims description 20
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 16
- 239000012943 hotmelt Substances 0.000 claims description 12
- 229910052782 aluminium Inorganic materials 0.000 claims description 11
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims description 8
- 229910001416 lithium ion Inorganic materials 0.000 claims description 8
- 239000004411 aluminium Substances 0.000 claims description 5
- 239000005030 aluminium foil Substances 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 239000011889 copper foil Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 9
- 229910052751 metal Inorganic materials 0.000 abstract description 5
- 239000002184 metal Substances 0.000 abstract description 5
- 238000004880 explosion Methods 0.000 abstract 1
- 239000004743 Polypropylene Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 238000007719 peel strength test Methods 0.000 description 6
- 239000002985 plastic film Substances 0.000 description 6
- 229920006255 plastic film Polymers 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 5
- 239000003792 electrolyte Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000004080 punching Methods 0.000 description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 238000003672 processing method Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 208000002925 dental caries Diseases 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 229910018095 Ni-MH Inorganic materials 0.000 description 1
- 229910018477 Ni—MH Inorganic materials 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Images
Classifications
-
- 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
Landscapes
- Sealing Battery Cases Or Jackets (AREA)
- Secondary Cells (AREA)
Abstract
The utility model discloses a battery. The battery comprises a casing and a battery unit which is sealed inside the battery and has an anode leading-out terminal and a cathode leading-out terminal. The casing comprises a base plate and a composite plate. The base plate and the composite plate both have a C-shaped cross section and the openings thereof are opposite, the first circumferential edge of the base plate and the second circumferential edge of the composite plate are connected to form an enclosed cavity, and the battery unit is positioned inside the enclosed cavity. The battery, whichuses the metal base plate use a part of the casing, retains the anti-explosion safety feature of a soft package battery, and meanwhile improves the mechanical strength of the casing, so that the casing of the battery is not easily pierced and the mechanical safety during the usage and manufacturing of the battery is remarkably improved. The base plate and the composite plate are processed to forma third cavity and a fourth cavity respectively and together form a first cavity for holding the battery unit, so that the stretching force during the processing process is equally shared on the baseplate and the composite plate and the strength of the casing is further improved.
Description
Technical field
The utility model relates to battery, is specifically related to a kind of flexible-packed battery.
Background technology
In lithium ion battery, except both positive and negative polarity, electrolyte and diaphragm paper, also be unusual important components as the housing of storage lithium ion battery each reactive component.As effective parts, housing is except providing the function of storage, the function that can provide electrode to draw for lithium ion battery also, and the safety to lithium ion battery provides certain help simultaneously.
At present, the material of battery container use mainly contains: stainless steel, nickel plating steel, aluminium alloy and aluminum plastic film etc.Aluminum plastic film has the soft characteristics of matter, is again flexible-packed battery so adopt aluminum plastic film as the battery of housing, because of it enjoys attention having superior fail safe aspect the blast protection.Aluminum plastic film claims aluminum-plastic composite membrane again, flexible-packed battery prepared therefrom, be through cutting a certain size aluminum-plastic composite membrane, doubling aluminum-plastic composite membrane, the edge of opening of aluminum-plastic composite membrane carried out high temperature is compound to be made battery utmost point group be sealed in steps such as inside to finish manufacturing.Aluminum-plastic composite membrane is generally to adopt PP and aluminium foil through the MULTILAYER COMPOSITE manufacturing, and its mechanical strength is lower, causes scrapping or scratch causes potential safety hazard making, be easier in the use to be pierced through by sharp-pointed material.In order to solve the above-mentioned problem that is pierced easily, install metal or plastic casing additional at flexible-packed battery usually and improve its anti-performance that pierces through.
The utility model content
The technical problems to be solved in the utility model is to overcome the deficiencies in the prior art, and a kind of flexible-packed battery with higher mechanical strength is provided.
Technical problem of the present utility model is solved by the following technical programs:
A kind of battery, comprise housing and be sealed in its interior, as to have anodal exit and negative pole exit battery unit, described housing comprises substrate, composite plate, the cross section of described substrate and composite plate is that C type and opening are relative, first periphery of described substrate and second periphery of described composite plate are connected to form closed cavity, and described battery unit is arranged in described closed cavity.
Above-mentioned composite plate comprises having the layer structure composite plate of one deck metallic plate at least, and described substrate comprises metallic plate.
Aforesaid substrate is connected by hot melt with described composite plate.
Above-mentioned composite plate has the hot melt layer that is arranged on the metallic plate.
Aforesaid substrate is connected by described hot melt layer hot melt with above-mentioned composite plate.
Above-mentioned hot melt layer comprises polypropylene or polypropylene fibre.
Above-mentioned anodal exit and described negative pole exit are drawn from the junction of described substrate, described composite plate.
Above-mentioned anodal exit and negative pole exit are provided with hot melt layer.
Above-mentioned composite plate comprises aluminum-plastic composite membrane.
Aforesaid substrate comprises any one in aluminium sheet, steel plate, aluminium foil or the Copper Foil.
Above-mentioned battery comprises lithium ion battery.
A kind of cell manufacturing method comprises the steps:
A, preparation have the battery unit of anodal exit, negative pole exit, cut the substrate with thin-slab structure of certain size and have the layer structure composite plate of thin-slab structure;
B, difference stamping substrate and layer structure composite plate, make that the cross section of described substrate and layer structure composite plate is the C type, and make described substrate form first periphery and the 3rd cavity, layered composite sheet structure form second periphery and the 4th cavity, common first cavity that holds battery unit that forms of described the 3rd cavity and the 4th cavity;
C, battery unit is inserted first cavity, make anodal exit, negative pole exit stretch out outside first periphery and second periphery;
D, first periphery is connected with second periphery, makes that anodal exit and negative pole exit are fixed between first periphery and second periphery, battery unit is encapsulated in first inside cavity.
Above-mentioned steps D also be included in first periphery and the second periphery junction form reservoir channel, with electrolyte by described reservoir channel inject described first cavity, with the step of reservoir channel sealing.
Above-mentioned steps B comprises that also punching press layer structure composite material forms the step of second cavity; Described step D also is included in first periphery and the second periphery junction forms the reservoir channel and second reservoir channel, wherein reservoir channel is communicated with first cavity and second cavity, second reservoir channel is communicated with second cavity with extraneous, electrolyte is injected first cavity by second reservoir channel, second cavity, reservoir channel, then the step that reservoir channel second reservoir channel is sealed.
Above-mentioned steps D also comprises battery is charged, and makes the gas in first cavity drain into second cavity by reservoir channel, and the sealing reservoir channel also cuts down the process of second cavity.
Above-mentioned cell manufacturing method also comprises the step that pierces through second cavity cut second cavity in described step D before.
The utility model beneficial effect compared with prior art is:
By using the part of metal substrate as housing, both inherited the security performance of the high explosion-proof of flexible-packed battery, also improved the mechanical strength of housing simultaneously, battery container is not easy to puncture, improved greatly battery use and make in mechanical safety; Substrate and composite plate are processed, formed the 3rd cavity and the 4th cavity respectively, and common first cavity that holds battery unit that forms, make that the stretching in the processing all is spread out on the fundamental sum composite plate, further improved the intensity of housing;
Description of drawings
Fig. 1 is the utility model embodiment battery structure schematic diagram;
Fig. 2 is a C place enlarged drawing among Fig. 1;
Fig. 3 is the utility model battery processing method embodiment 1 step 101 schematic diagram;
Fig. 4 is an A place enlarged drawing among Fig. 3;
Fig. 5 is a B place enlarged drawing among Fig. 3;
Fig. 6 is the utility model battery processing method embodiment 1 step 102 schematic diagram;
Fig. 7 is the utility model battery processing method embodiment 1 step 103 schematic diagram.
Embodiment
A kind of battery, its a kind of execution mode is a kind of lithium ion battery, as shown in Figure 1 and Figure 2, comprises housing and is sealed in its interior, as to have anodal exit 4 and negative pole exit (be arrangeding in parallel with anodal exit 4, not shown) battery unit 3; Described housing comprises substrate 1, by layer of metal layer 11 be layered in the layer structure composite plate 2 that the hot melt layer 12 of metal level 11 positive and negatives constitutes; Anodal exit 4 and negative pole exit are provided with hot melt layer 10 on it; The cross section of substrate 1 is the C type, comprises first periphery 61 and the 3rd cavity 51 with opening; The cross section of layer structure composite plate 2 is the C type, comprise second periphery 62 and the 4th cavity 52 with opening, the opening of the 4th cavity 52 is relative with the opening of the 3rd cavity 51, and first periphery 61 and 62 fusions of second periphery connect as one and make the 3rd cavity 51 and the 4th cavity 52 form first cavitys 5 jointly; Battery unit 3 is arranged in first cavity 5, anodal exit 4 on the battery unit 3 and negative pole exit stretch out outside the junction of first periphery 61 and second periphery 62, are sandwiched between layer structure composite plate 2 and the substrate 1, and anodal exit 4 and negative pole exit also fusion connect, are fixed between substrate 1 and the layer structure composite plate 2.
Preferred mode, substrate 1 adopts aluminium sheet, steel plate, aluminium foil or Copper Foil, more excellent mode adopts aluminium flake or stainless steel, more excellent mode adopts A3003 or A3005 annealing O attitude aluminum alloy sheet, thickness can be arranged between 0.18~0.35mm, preferably select for use between 0.22~0.3mm, it is that A3005, thickness are the aluminum alloy sheet of 0.25mm that this example adopts model; It is the layered composite of aluminium foil that layer structure composite plate 2 adopts two-layer PP, intermediate course, and more excellent mode adopts the sheet materials such as aluminum-plastic composite membrane of existing flexible-packed battery.
As shown in Table 1 and Table 2, table 1 is the puncture result of the test of aluminum-plastic composite membrane, and table 2 is the hot strength test result of aluminum-plastic composite membrane, this shows that the mechanical strength of aluminum-plastic composite membrane is lower.
Table 1
Table 2
This example adopts aluminium flake and aluminum-plastic composite membrane, and connecting portion adopts aluminium flake and the compound mode of aluminum-plastic composite membrane, can improve the mechanical strength of housing, has also kept the safety anti-explosive performance of aluminum-plastic composite membrane simultaneously.Table 3 is an aluminium flake hot strength test result.
Table 3
The manufacture method of the utility model battery, its a kind of execution mode for the lithium ion battery manufacture method, comprises the steps:
Embodiment 1:
Step 101, as Fig. 3, Fig. 4 and shown in Figure 5, preparation has anodal exit 4, the negative pole exit (is provided with anodal exit is parallel, not shown) battery unit 3, the model with thin-slab structure that cuts certain size is that the aluminium sheet of A3003 is as substrate 1 with have the aluminum-plastic composite membrane (also claiming aluminum-plastic composite membrane) of the layer structure composite plate of thin-slab structure as layer structure composite plate 2;
Step 102, as Fig. 6, shown in Figure 7, stamping substrate 1 forms first periphery 61 and the 3rd cavity 51, punching press layer structure composite plate 2 forms second periphery 62 and the 4th cavity 52, the opening of the 3rd cavity 51 is relative with the opening of the 4th cavity 52, common formation can be held first cavity 5 of battery unit 3, the composite plate of punching press layer structure again 2 makes to form second cavity 7;
Step 103, is as shown in Figure 7 inserted cavity 5 with battery unit 3, makes anodal exit 4, negative pole exit stretch out outside first periphery 61 and second periphery 62; First periphery 61 is connected with second periphery, 62 hot melts, make that anodal exit 4 and negative pole exit are fixed between layer structure composite plate 2 and the substrate 1, battery unit 3 is encapsulated in first cavity, 5 inside, simultaneously, substrate 1 forms the reservoir channel 8 and second reservoir channel 9 with layer structure composite plate 2 junctions, wherein reservoir channel 8 connection first cavitys 5 and second cavity, 7, the second reservoir channels 9 are in communication with the outside second cavity 7; Because of there being the PP material in the aluminum plastic film, the melt temperature of PP material is about 150 ℃, considers the machine fluctuation, and the temperature of the compound connection of hot melt is 90 ℃, and composite pressure is 3MPa;
Step 104, electrolyte inject first cavity 5 by second reservoir channel 9, second cavity 7, reservoir channel 8, then with 9 sealings of second reservoir channel;
Step 105, battery is charged;
Step 106, second cavity 7 is pierced through, the waste gas that charging produces in first cavity 5 are got rid of through reservoir channel 8, second cavity 7;
Step 107, seal reservoir channel 7 at last, and second cavity 7 is cut the battery that makes as shown in Figure 1.
The battery that this example processes connects peel strength test through housing, and test result is as shown in table 4.
Test piece number (Test pc No.) | Maximum, force (N) | Maximum distortion (mm) | Test duration (S) |
401 | 45.755 | 14.6403 | 18.0 |
402 | 45.315 | 7.3518 | 9.2 |
403 | 41.096 | 26.1083 | 31.6 |
Table 4
Embodiment 2: this example is substantially the same manner as Example 1, and difference is that the combined temp in the step 103 is 120 ℃.
The battery that processes connects peel strength test through housing, and its test result is as shown in table 5.
Test piece number (Test pc No.) | Maximum, force (N) | Maximum distortion (mm) | Test duration (S) |
501 | 52.916 | 27.6622 | 33.6 |
502 | 47.868 | 24.8259 | 30.2 |
503 | 63.495 | 6.4819 | 8.2 |
504 | 54.318 | 23.7385 | 28.8 |
Table 5
Embodiment 3: this example is substantially the same manner as Example 1, and difference is that the combined temp in the step 103 is 140 ℃.The battery that processes connects peel strength test through housing, and its test result is as shown in table 6.
Test piece number (Test pc No.) | Maximum, force (N) | Maximum distortion (mm) | Test duration (S) |
601 | 63.578 | 4.0898 | 5.4 |
602 | 63.505 | 15.5629 | 19.0 |
603 | 58.651 | 11.6142 | 14.4 |
Table 6
Embodiment 4: this example is substantially the same manner as Example 1, and difference is that the combined temp in the step 103 is 140 ℃, and composite pressure is 1MPa, and the battery that processes connects peel strength test through housing, and its test result is as shown in table 7.
Test piece number (Test pc No.) | Maximum, force (N) | Maximum distortion (mm) | Test duration (S) |
701 | 26.94 | 9.1561 | 11.4 |
702 | 26.973 | 11.4692 | 14.2 |
703 | 25.363 | 11.1305 | 13.8 |
Table 7
Embodiment 5: this example is substantially the same manner as Example 3, and difference is that the combined temp in the step 103 is 120 ℃, and composite pressure is 5MPa, and the battery that processes connects peel strength test through housing, and its test result is as shown in table 8.
Test piece number (Test pc No.) | Maximum, force (N) | Maximum distortion (mm) | Test duration (S) |
801 | 81.729 | 10.9499 | 13.6 |
802 | 89.98 | 9.9904 | 12.4 |
803 | 66.191 | 7.9739 | 10.0 |
Table 8
Comparative Examples: the peel strength test result of conventional compound aluminum-plastic composite membrane, as shown in table 9.
Test piece number (Test pc No.) | Maximum, force (N) | Maximum distortion (mm) | Test duration (S) |
901 | 36.779 | 12.8505 | 15.8 |
902 | 37.557 | 7.5495 | 9.4 |
903 | 34.878 | 17.3963 | 21.2 |
Table 9
By the peel strength contrast test as can be seen, pressure is under 3MPa, 120 ℃ hot combined strength bination is bigger, when temperature is 120 ℃, the pressure of 5MPa is bigger, but is limited to the long-term use of equipment, preferably uses the pressure of 3MPa, combined strength bination with aluminum-plastic composite membrane contrasts as can be seen, and the material combined strength bination in employing the utility model can satisfy the needs of ordinary production.
Recombination site of the present utility model is carried out scanning electron microscope test (SEM) test, and it is compound comparatively tight as can be seen from composite bed, interpenetrates between aluminium flake and the aluminum-plastic composite membrane, and composite effect is better.
The another kind of execution mode of the utility model cell manufacturing method is used for Ni-MH battery processing, comprises the steps:
Embodiment 6
Step 601, preparation have the battery unit of anodal exit 4, negative pole exit, and the model with thin-slab structure that cuts certain size is that the aluminium sheet of A3005 is as substrate 1 with have the aluminum-plastic composite membrane (also claiming aluminum plastic film) of thin-slab structure as layer structure composite plate 2;
Step 602, stamping substrate 1 form first periphery 61 and the 3rd cavity 51, punching press layer structure composite plate 2 forms second periphery 62 and the 4th cavity 52, the opening of the 3rd cavity 51 is relative with the opening of the 4th cavity 52, and common formation can be held first cavity 5 of battery unit 3;
Step 603, battery unit 3 is inserted first cavity 5, make anodal exit 4, negative pole exit stretch out outside first periphery 61 and second periphery 62;
Step 604, first periphery 61 is connected with second periphery, 62 hot melts, makes that anodal exit 4 and negative pole exit are fixed between layer structure composite plate 2 and the substrate 1, battery unit 3 is sealed in first cavity, 5 inside, form completed cell.
Claims (6)
1. battery, comprise housing and be sealed in its interior, as to have anodal exit and negative pole exit battery unit, described housing comprises substrate, composite plate, it is characterized in that, the cross section of described substrate and composite plate is that C type and opening are relative, first periphery of described substrate and second periphery of described composite plate are connected to form closed cavity, and described battery unit is arranged in described closed cavity.
2. battery according to claim 1 is characterized in that, described composite plate comprises having the layer structure composite plate of one deck metallic plate at least, and described substrate comprises metallic plate.
3. battery according to claim 2 is characterized in that, described substrate is connected by hot melt with described composite plate.
4. according to any described battery of claim 2 to 3, it is characterized in that described composite plate comprises aluminum-plastic composite membrane.
5. according to any described battery of claim 2 to 3, it is characterized in that described substrate comprises any one in aluminium sheet, steel plate, aluminium foil or the Copper Foil.
6. according to any described battery of claim 1 to 3, it is characterized in that described battery comprises lithium ion battery.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2009201571298U CN201408814Y (en) | 2009-05-13 | 2009-05-13 | Battery |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2009201571298U CN201408814Y (en) | 2009-05-13 | 2009-05-13 | Battery |
Publications (1)
Publication Number | Publication Date |
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CN201408814Y true CN201408814Y (en) | 2010-02-17 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN2009201571298U Expired - Lifetime CN201408814Y (en) | 2009-05-13 | 2009-05-13 | Battery |
Country Status (1)
Country | Link |
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CN (1) | CN201408814Y (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010124591A1 (en) * | 2009-04-29 | 2010-11-04 | 深圳市比克电池有限公司 | Battery and fabricating method thereof |
-
2009
- 2009-05-13 CN CN2009201571298U patent/CN201408814Y/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010124591A1 (en) * | 2009-04-29 | 2010-11-04 | 深圳市比克电池有限公司 | Battery and fabricating method thereof |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
TR01 | Transfer of patent right |
Effective date of registration: 20170527 Address after: 518119 Beek Industrial Zone, Kwai Chung street, Dapeng New District, Guangdong, Shenzhen Patentee after: SHENZHEN BAK BATTERY CO., LTD. Address before: Kwai Chung street Beek Industrial Park in Longgang District of Shenzhen City, Guangdong province 518119 Patentee before: Shenzhen Bak Battery Co., Ltd. |
|
CX01 | Expiry of patent term |
Granted publication date: 20100217 |
|
CX01 | Expiry of patent term |