CN110611058A - Method for producing a housing for a lithium ion battery and housing for a lithium ion battery - Google Patents
Method for producing a housing for a lithium ion battery and housing for a lithium ion battery Download PDFInfo
- Publication number
- CN110611058A CN110611058A CN201910510779.4A CN201910510779A CN110611058A CN 110611058 A CN110611058 A CN 110611058A CN 201910510779 A CN201910510779 A CN 201910510779A CN 110611058 A CN110611058 A CN 110611058A
- Authority
- CN
- China
- Prior art keywords
- housing
- breaking point
- lithium ion
- desired breaking
- ion battery
- 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.)
- Pending
Links
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 38
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 24
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 23
- 238000001746 injection moulding Methods 0.000 claims abstract description 19
- 238000000034 method Methods 0.000 claims abstract description 15
- 238000005266 casting Methods 0.000 claims abstract description 3
- 229910010293 ceramic material Inorganic materials 0.000 claims description 10
- 239000002861 polymer material Substances 0.000 claims description 10
- 238000002360 preparation method Methods 0.000 claims 2
- 238000002347 injection Methods 0.000 description 11
- 239000007924 injection Substances 0.000 description 11
- -1 polyethylene Polymers 0.000 description 6
- 239000000919 ceramic Substances 0.000 description 5
- 239000012530 fluid Substances 0.000 description 5
- 239000004033 plastic Substances 0.000 description 5
- 229920003023 plastic Polymers 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 229920001155 polypropylene Polymers 0.000 description 3
- 239000004800 polyvinyl chloride Substances 0.000 description 3
- 229920000915 polyvinyl chloride Polymers 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003698 laser cutting Methods 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D99/00—Subject matter not provided for in other groups of this subclass
- B29D99/006—Producing casings, e.g. accumulator cases
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- 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
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/342—Non-re-sealable arrangements
- H01M50/3425—Non-re-sealable arrangements in the form of rupturable membranes or weakened parts, e.g. pierced with the aid of a sharp member
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2200/00—Safety devices for primary or secondary batteries
- H01M2200/20—Pressure-sensitive devices
-
- 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
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
A method for producing a housing (12) for a lithium-ion battery (10) is proposed, wherein the method comprises the following steps: providing a casting material; and injection-molding the housing (12) from the injection-molded material, characterized in that, during the injection-molding, a desired breaking point (50) is produced in the outer surface of the housing (12), which is intended to break when an overpressure is present in the housing (12).
Description
Technical Field
The invention relates to a method for producing a housing for a lithium-ion battery and to a housing for a lithium-ion battery.
Background
With the hitherto known methods for producing housings for lithium ion batteries or the hitherto known housings for lithium ion batteries, it is desirable for a breaking point or safety vent (safety vent) to be arranged in the housing or on an outer surface of the housing. In the event of too high a fluid pressure in the housing (i.e. in the event of too high a pressure of the gas and/or liquid), it is desirable for the breaking point or safety vent to break and in this way prevent the housing from exploding. Thus, a controlled pressure release of the housing takes place by means of a desired breaking point or a breaking of the safety bore.
After the production of the housing, the desired breaking point or the safety vent is welded into the housing, for example by laser cutting. In this way, the respective desired breaking point is arranged in or on the outer surface.
The disadvantage here is that two steps are required, namely a step of first producing the housing and a step of producing or arranging the desired breaking point at the housing. Therefore, the technology is expensive and the manufacturing cost is high.
Disclosure of Invention
Advantages of the invention
Embodiments of the invention can be realized in an advantageous manner by disclosing a method for producing a lithium ion battery housing having a desired breaking point or a lithium ion battery housing having a desired breaking point, which can be produced technically simply and cost-effectively.
According to a first aspect of the present invention, a method for producing a housing for a lithium ion battery is presented, wherein the method comprises the following steps: providing a casting material; and injection molding the housing from the injection molding material, characterized in that, during the injection molding, a desired breaking point is produced in the outer surface of the housing, which is intended to break when an overpressure, in particular a fluid overpressure, is present in the housing.
The advantage is that the method is typically technically simple, since the desired breaking point is produced in the same step as the manufacture of the housing. This generally reduces manufacturing costs. Furthermore, typically less time is required, as a result of which a housing having a desired breaking point can be produced particularly quickly.
According to a second aspect of the invention, a housing for a lithium ion battery is proposed, wherein an outer surface of the housing has a desired breaking point for breaking when an overpressure, in particular a fluid overpressure, is present in the housing, characterized in that the desired breaking point has been produced when the housing is injection molded.
It is advantageous here that the housing can typically be produced technically simply, since the desired breaking point is produced in the same step as the production of the housing. This generally reduces the manufacturing cost of the housing. Furthermore, the housing can generally be manufactured in a shorter time. This also typically saves cost.
The idea of an embodiment of the invention can be seen as based on, among other things, the idea and insight described below.
According to one embodiment of the method, the injection-molded material comprises a ceramic material, in particular the injection-molded material is made of a ceramic material. It is advantageous here that the housing is generally electrically non-conductive. An additional advantage is that the housing typically has good thermal conductivity. Furthermore, the housing generally has high chemical and thermal stability. A combination of a housing and a cover made of any material (e.g. metal, ceramic, plastic) is generally possible. Furthermore, the connection of the cover to the housing is typically achieved by adhesives and/or polymers.
According to one embodiment of the method, the injection-molded material comprises, in particular is made of, a polymer material. It is advantageous here that the housing is generally electrically non-conductive. A further advantage is that the housing can typically be made of a particularly cost-effective material. Furthermore, polymer materials (for example, polyethylene and/or polypropylene and/or polyvinyl chloride) can typically be injection molded particularly simply technically. Furthermore, the housings produced thereby generally have a low weight.
According to one embodiment of the method, the housing is injection molded in such a way that it is designed to accommodate a prismatic lithium ion cell, preferably a plurality of prismatic lithium ion cells. As a result, lithium ion batteries, which have a high energy density, can typically be produced in a technically simple manner by means of the housing.
According to one embodiment of the method, the desired breaking point in the outer surface does not have a geometry which closes on itself. This ensures that high mechanical forces (so-called mechanical stress peaks) usually occur at the edge of the desired breaking point, so that the desired breaking point breaks before the housing fails in a mechanically uncontrolled manner as a result of an overpressure in the housing.
According to one embodiment of the housing, the housing comprises a ceramic material, in particular the housing is made of a ceramic material. It is advantageous here that the housing is generally electrically non-conductive. A further advantage is that the housing typically has good thermal conductivity. Furthermore, the housing generally has high chemical and thermal stability. A combination of a housing and a cover made of any material (e.g. metal, ceramic, plastic) is generally possible. Furthermore, the connection of the cover to the housing is typically achieved by adhesives and/or polymers.
According to one embodiment of the housing, the housing comprises a polymer material, in particular the housing is made of a polymer material. It is advantageous here that the housing is generally electrically non-conductive. A further advantage is that the housing can typically be made of a particularly cost-effective material. Furthermore, polymer materials (for example, polyethylene and/or polypropylene and/or polyvinyl chloride) can typically be injection molded particularly simply technically. Furthermore, the housing typically has a low weight.
According to one embodiment of the housing, the housing is designed to accommodate a prismatic lithium ion cell, preferably a plurality of prismatic lithium ion cells. It is advantageous here that, by means of the housing, a lithium ion battery, which has a high energy density, can typically be produced in a technically simple manner.
According to one embodiment of the housing, the desired breaking point on the outer surface does not have a geometry which closes on itself. It is thereby generally ensured that high mechanical forces (so-called mechanical stress peaks) occur at the edges of the desired breaking point, so that the desired breaking point breaks before the housing fails in a mechanically uncontrolled manner as a result of an overpressure in the housing.
It is pointed out that herein some possible features and advantages of the invention are described with reference to different embodiments of a method for manufacturing a lithium ion battery casing or a lithium ion battery casing. The skilled person will appreciate that the described features can be combined, adapted or substituted in a suitable manner in order to obtain further embodiments of the invention.
Drawings
Embodiments of the present invention are described hereinafter with reference to the accompanying drawings, wherein neither the drawings nor the description shall be construed as limiting the invention.
Fig. 1 shows an exploded view of a lithium ion battery with an embodiment of a housing according to the invention;
fig. 2a to 2e show top views of different possible shapes of the desired breaking point of the housing of fig. 1; and
fig. 3a, 3b show cross-sectional views of the bottom of the housing of fig. 1, wherein a desired breaking point is present in the bottom of the housing.
The figures are purely diagrammatic and not drawn to scale. The same reference numbers in the figures denote the same or functionally similar features.
Detailed Description
Fig. 1 shows an exploded view of a lithium-ion battery 10 having an embodiment of a housing 12 according to the present invention.
The lithium-ion battery 10 comprises a housing 12, in which a lithium-ion cell is accommodated, which stores energy electrochemically. The housing 12 has a housing lower portion 15, which is open in one direction (upward in fig. 1), and a housing cover 20. The opening of the lower housing part 15 is closed by a housing cover 20. The housing cover 20 is a portion of the housing 12. It is also conceivable for the housing 12 to comprise only the lower housing part 15, or alternatively for only the lower housing part 15 in which the desired breaking point 50 is present to be produced by injection molding and for the upper housing part to be produced by a different production process.
The lower housing part 15 has a square shape.
Furthermore, the lithium ion battery 10 comprises a first seal 25, which seals off the housing cover 20 and separates the terminals 30, which are guided through openings in the cover. The housing cover 20 is connected in a gas-tight manner to the housing lower part 15 by means of a second seal 35. The first seal 25 has a recess through which a part of the terminal 30 can be inserted.
The housing cover 20 can comprise or be made of metal, plastic and/or ceramic. The first seal 25 can comprise or be made of an adhesive, plastic and/or ceramic. The terminal 30 can be made of metal (e.g., aluminum and/or copper). The second seal 35 can comprise or be made of an adhesive, plastic and/or ceramic. The second seal 35 can be constructed substantially rectangularly and with a small height.
The housing 12 is injection molded, i.e. manufactured by means of an injection molding process. The housing 12 can include a ceramic material and/or a polymeric material. In particular, the housing 12 can be made of a ceramic material and/or a polymer material.
There is a desired breaking point 50 in the side wall or outer surface of the housing 12 or on the outer surface. It is also conceivable for more than one desired breaking point 50, for example two or three desired breaking points, to be present in or on the outer surface of the housing 12.
The desired breaking point 50 can be formed on the housing cover 20. Alternatively or additionally, the desired breaking point 50 can be present in the side wall. Alternatively or additionally, the desired breaking point 50 can be present in the bottom of the housing lower part 15 of the housing 12.
The desired breaking points 50 are configured or created together during injection molding to manufacture the housing 12. This means that the desired breaking point 50 has already been configured or formed during the injection molding of the housing 12.
For this purpose, the injection mold is designed or formed accordingly. The injection mold has a shape corresponding to the desired breaking point 50, and typically has one or more protrusions such that the housing 12 or the corresponding wall of the housing 12 (or the housing cover 20 or the bottom) has a small thickness at the desired breaking point 50 or a smaller thickness compared to other portions of the housing 12.
Fig. 2a to 2e show top views of different possible shapes of the desired breaking point 50 of the housing 12 of fig. 1. In fig. 2a to 2e, the desired breaking point 50 is in each case (centrally) in the bottom of the housing lower part 15. The outer geometry of the desired breaking point 50 (i.e., the geometry on the outer surface or face of the base) is shown, respectively.
The desired breaking point 50 typically has a location where the material of the housing 12 is thinned. This means that at the desired breaking point 50, the material of the housing 12 has a smaller thickness than the rest of the housing 12 or parts thereof.
Fig. 2a to 2e each show a top view of a differently configured desired breaking point 50. Fig. 2a to 2e respectively show a top view of the bottom of the housing 12 from below if the desired breaking point 50 is formed in the bottom of the housing 12.
In fig. 2a, the desired breaking point 50 has the shape of a cross in plan view, that is to say the shape of two lines intersecting in the middle at 90 °. At the end of the respective line, the intended breaking point 50 ends abruptly, that is to say it has an edge. This means that the thickness of the material of the wall or cover or bottom of the housing 12 abruptly or rapidly increases or decreases at the end of the desired breaking point 50.
Mechanical stress peaks thus occur at these locations, so that the housing 12 fractures (versagt) at the location or point of the desired fracture point 50 when an overpressure or an excessive pressure is present in the housing 12, before the housing 12 fractures at other locations not provided for this purpose. Thus, if the pressure of the fluid (or gas and/or liquid) in the housing 12 exceeds a predetermined pressure, the gas and/or liquid is discharged into the surroundings in a controlled manner via the desired breaking point 50.
The desired breaking point 50 is also referred to as a safety vent (safety vent).
In fig. 2b, the desired breaking point 50 has the shape of a groove in a top view.
In fig. 2c, the desired breaking point 50 has a partially circular shape, in particular a shape of a three quarter circle. The circle is not closed. This means that the geometry itself is not closed, but open.
In fig. 2a, 2b and 2c, mechanical stress peaks occur at the ends of one or more lines, respectively.
In fig. 2d, the desired breaking point 50 has the shape of a sharp arrow, i.e. the two lines meet at an acute angle. Here, in the presence of an overpressure in the housing 12, the greatest mechanical stresses occur at the following locations: the wires are touching at said location. Here, the desired breaking point 50 breaks first.
In fig. 2e, the desired breaking point 50 has the shape of a double arrow in plan view, the arrow ends of which point in opposite directions. This means that at both lateral ends in fig. 2e the respective two straight lines intersect at an angle. The intersections of the respective two straight lines are connected to each other by another straight line. Here, the desired breaking point 50 at the end of the respective outer straight line also fails first when the pressure of the fluid in the housing 12 rises above a predetermined limit value.
Fig. 3a, 3b show a cross-sectional view of the bottom of the housing 12 of fig. 1, wherein a desired breaking point 50 is present in the bottom of the housing 12.
As can be clearly seen in fig. 3a or 3b, the housing 12 is thinner in the region of the desired breaking point 50 or at the location of the desired breaking point 50, i.e. has a smaller thickness than beyond the desired breaking point 50. The thickness of the material of the housing 12 decreases rapidly in the region of the desired breaking point 50 in fig. 3a and over a certain distance has this small thickness (in the center of fig. 3 a) before it subsequently increases again to the original thickness (viewed from left to right in fig. 3 a)
In fig. 3b, the thickness of the material of the housing 12 or of the outer wall of the housing 12 or of the bottom of the housing 12 decreases rapidly from the normal thickness (viewed from left to right in fig. 3 b). Immediately after the thickness of the material has dropped to a minimum, the thickness of the shell 12 rises again to the normal thickness at the same rate as the thickness has dropped. This means that in this part of fig. 3b the housing 12 has a minimum only at one point where a breaking point 50 is desired.
It is conceivable that one lithium ion cell or a plurality of lithium ion cells are accommodated in the housing 12. Multiple li-ion cells share a single housing 12 and thus a single desired breaking point 50. In this case, a plurality of lithium ion cells are fluidly connected to each other.
The housing 12 can have one desired breaking point or a plurality of desired breaking points. For example, one desired breaking point 50 can be formed in the bottom of the housing 12 and another desired breaking point can be formed in the housing cover 20 of the housing 12.
The case 12 can be configured such that a lithium ion battery cell of a prismatic shape is accommodated therein. However, it is also conceivable for the lithium-ion cell to be accommodated in the housing 12 in a cylindrical shape and/or in a pocket structure (Pouch-Bauweise).
The housing 12 can be made of a ceramic material that is injection molded. It is also possible that the housing 12 is made of a polymeric material, such as polyethylene, polypropylene and/or polyvinyl chloride. The polymer material is also injection molded or already injection molded.
Injection molding or injection molding means in particular that the injection material is liquefied (plasticized) by means of an injection molding machine and is subsequently injected under pressure into a mold (injection molding mold).
Finally, it should be pointed out that: the concept of "having", "including", etc. does not exclude other elements or steps, and the concept of "a" or "an" does not exclude a plurality. Reference signs in the claims shall not be construed as limiting.
Claims (10)
1. Method for manufacturing a housing (12) for a lithium ion battery (10), wherein the method comprises the steps of:
-providing a casting material; and
-injection moulding the housing (12) from the injection moulding material,
it is characterized in that the preparation method is characterized in that,
during injection molding, a desired breaking point (50) is produced in the outer surface of the housing (12), said desired breaking point being intended to break when an overpressure is present in the housing (12).
2. Method according to claim 1, wherein the injection-moulding material comprises, in particular is made of, a ceramic material.
3. Method according to claim 1 or 2, wherein the injection-moulding material comprises, in particular is made of, a polymer material.
4. Method according to one of the preceding claims, wherein the housing (12) is injection-molded in such a way that the housing (12) is designed to accommodate a prismatic lithium ion cell, preferably a plurality of prismatic lithium ion cells.
5. Method according to any one of the preceding claims, wherein the desired breaking point (50) in the outer surface does not have a geometry which closes on itself.
6. Housing (12) for a lithium ion battery (10), wherein an outer surface of the housing (12) has a desired breaking point (50) for breaking in the presence of an overpressure in the housing (12),
it is characterized in that the preparation method is characterized in that,
the desired breaking point (50) is already produced during the injection molding of the housing (12).
7. The housing (12) according to claim 6, wherein the housing (12) comprises a ceramic material, in particular the housing (12) is made of a ceramic material.
8. The housing (12) according to claim 6 or 7, wherein the housing (12) comprises a polymer material, in particular the housing (12) is made of a polymer material.
9. The housing (12) according to any one of claims 6 to 8, wherein the housing (12) is designed to accommodate a prismatic lithium ion cell, preferably a plurality of prismatic lithium ion cells.
10. The housing (12) according to any one of claims 6 to 9, wherein the intended breaking point (50) on the outer surface does not have a self-closing geometry.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102018209484.5A DE102018209484A1 (en) | 2018-06-14 | 2018-06-14 | Method for manufacturing a housing for a lithium-ion battery and housing for a lithium-ion battery |
| DE102018209484.5 | 2018-06-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110611058A true CN110611058A (en) | 2019-12-24 |
Family
ID=68724611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910510779.4A Pending CN110611058A (en) | 2018-06-14 | 2019-06-13 | Method for producing a housing for a lithium ion battery and housing for a lithium ion battery |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110611058A (en) |
| DE (1) | DE102018209484A1 (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5133473A (en) * | 1989-06-09 | 1992-07-28 | Ab Akerlund & Rausing | Container closure |
| US5776522A (en) * | 1996-04-29 | 1998-07-07 | Larry J. Winget | Apparatus for making an air bag cover having a hidden tear seam |
| CN2529389Y (en) * | 2002-03-07 | 2003-01-01 | 武汉力兴(火炬)电源有限公司 | Totally-enclosed explosion-proof lithium battery |
| US20030020202A1 (en) * | 2001-07-27 | 2003-01-30 | Toyoda Gosei Co., Ltd. | Method for manufacturing automobile interior article |
| CN201508864U (en) * | 2009-09-10 | 2010-06-16 | 比亚迪股份有限公司 | Battery cover plate assembly, single battery and battery pack |
| CN201655907U (en) * | 2010-05-17 | 2010-11-24 | 深圳市东方华联科技有限公司 | Safety lithium ion battery |
| CN106457631A (en) * | 2014-03-14 | 2017-02-22 | 厄弗·欧根·韦克斯勒控股有限及两合公司 | Method for producing a plastic component by means of an injection moulding process |
| CN206878908U (en) * | 2017-03-06 | 2018-01-12 | 广东长盈精密技术有限公司 | Ceramic shell and electronic equipment |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3570558D1 (en) * | 1985-12-11 | 1989-06-29 | Silberkraft Leichtakku | Battery of mechanically activated galvanic cells |
| DE102012219104A1 (en) * | 2012-10-19 | 2014-05-08 | Robert Bosch Gmbh | Electrochemical cell with tubular carrier grid |
-
2018
- 2018-06-14 DE DE102018209484.5A patent/DE102018209484A1/en not_active Withdrawn
-
2019
- 2019-06-13 CN CN201910510779.4A patent/CN110611058A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5133473A (en) * | 1989-06-09 | 1992-07-28 | Ab Akerlund & Rausing | Container closure |
| US5776522A (en) * | 1996-04-29 | 1998-07-07 | Larry J. Winget | Apparatus for making an air bag cover having a hidden tear seam |
| US20030020202A1 (en) * | 2001-07-27 | 2003-01-30 | Toyoda Gosei Co., Ltd. | Method for manufacturing automobile interior article |
| CN2529389Y (en) * | 2002-03-07 | 2003-01-01 | 武汉力兴(火炬)电源有限公司 | Totally-enclosed explosion-proof lithium battery |
| CN201508864U (en) * | 2009-09-10 | 2010-06-16 | 比亚迪股份有限公司 | Battery cover plate assembly, single battery and battery pack |
| CN201655907U (en) * | 2010-05-17 | 2010-11-24 | 深圳市东方华联科技有限公司 | Safety lithium ion battery |
| CN106457631A (en) * | 2014-03-14 | 2017-02-22 | 厄弗·欧根·韦克斯勒控股有限及两合公司 | Method for producing a plastic component by means of an injection moulding process |
| CN206878908U (en) * | 2017-03-06 | 2018-01-12 | 广东长盈精密技术有限公司 | Ceramic shell and electronic equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102018209484A1 (en) | 2019-12-19 |
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Application publication date: 20191224 |