CN101388445B - Battery set - Google Patents
Battery set Download PDFInfo
- Publication number
- CN101388445B CN101388445B CN200710145657.7A CN200710145657A CN101388445B CN 101388445 B CN101388445 B CN 101388445B CN 200710145657 A CN200710145657 A CN 200710145657A CN 101388445 B CN101388445 B CN 101388445B
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- Prior art keywords
- electrode terminal
- terminal
- battery pack
- cell
- pole piece
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- 239000008393 encapsulating agent Substances 0.000 claims description 33
- 238000003466 welding Methods 0.000 claims description 27
- 239000000853 adhesive Substances 0.000 claims description 14
- 230000001070 adhesive effect Effects 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 14
- 230000005611 electricity Effects 0.000 claims description 9
- 229920001971 elastomer Polymers 0.000 claims description 4
- 239000003292 glue Substances 0.000 claims description 4
- 239000008188 pellet Substances 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 4
- 229920003023 plastic Polymers 0.000 claims description 4
- 239000005060 rubber Substances 0.000 claims description 4
- 230000004888 barrier function Effects 0.000 claims description 3
- 230000002787 reinforcement Effects 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract description 12
- 239000003566 sealing material Substances 0.000 abstract 4
- 239000007767 bonding agent Substances 0.000 abstract 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
- 229910052802 copper Inorganic materials 0.000 description 6
- 239000010949 copper Substances 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 239000003822 epoxy resin Substances 0.000 description 4
- 229920000647 polyepoxide Polymers 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005476 soldering Methods 0.000 description 3
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 229920002943 EPDM rubber Polymers 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 229920012266 Poly(ether sulfone) PES Polymers 0.000 description 1
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229920006335 epoxy glue Polymers 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- -1 phenol aldehyde Chemical class 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- Y02E60/12—
Landscapes
- Connection Of Batteries Or Terminals (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
A battery group comprises a plurality of single batteries, wherein the single battery comprises a battery casing, an electric core and an electrode terminal, and one end of the battery casing is a cover plate, the cover plate is provided with a through-hole, one end of the electrode terminal passes through the through-hole to the outer side of the battery casing, the electric core comprises a positive plate, a negative plate and a diaphragm arranged between the positive plate and the negative plate, the electrode terminal comprises a positive terminal and a negative terminal, wherein the positive terminal is electrically connected with the positive plate, the negative terminal is electrically connected with the negative plate, and the single batteries are connected in series or in parallel through the electrode terminals. The electrode terminal is in a sheet form, and the connection between the electrode terminals is in a joint connection, the cover plate and the electrode terminal are sealed by a sealing element, wherein the sealing element comprises a rivet and sealing material, and the electrode terminal is clamped by the sealing material and the rivet in turn from inside to outside, and the contact surface between the rivet and the sealing material and the contact surface between the electrode terminal and the sealing material are provided with bonding agent. The battery group has the advantages of small internal resistance and excellent sealing property.
Description
Technical field
The invention relates to a kind of battery pack.
Background technology
Along with the raising of people's environmental consciousness, it will be following developing direction that electric automobile or hybrid vehicle replace existing fuel vehicle.As the core drive energy of electric automobile, it is particularly outstanding that the importance of power battery pack seems, can form power battery pack by polyphone or a plurality of cell in parallel.
CN 1767245A discloses a kind of battery component, and this battery component comprises a plurality of element cells 1 that are arranged in the shell.Each element cell comprises from positive terminal 2 that wherein stretches out and negative terminal 3, and connects the positive terminal 2 of lamination unit battery of adjacent layout and the connector 20 of negative terminal 3.Connector also comprises fixture 21, is formed with external screw thread on positive terminal 2 and negative terminal 3, is formed with internal thread on fixture 21, by fastening fixture 21 connector is fixed on positive terminal 2 and the negative terminal 3.In above-mentioned battery component, the fixture of positive terminal and/or negative terminal and connector is for being threaded, the contact internal resistance is big, if occurred loosening between them, it is bigger then to contact the internal resistance meeting, therefore the internal resistance of battery component is bigger, and might cause seal failure, reduces the sealing of battery pack; Because each cell all needs to have externally threaded anode and cathode terminals as conducting element and the brace that is used to connect, therefore make that the weight and volume of battery pack is bigger in addition.
Summary of the invention
The objective of the invention is provides a kind of internal resistance less and good sealing performance battery pack in order to overcome the big and relatively poor shortcoming of sealing of existing battery pack internal resistance.
The invention provides a kind of battery pack, this battery pack comprises a plurality of cells 1, and described cell 1 comprises battery case 4, electric core and electrode terminal, and described electric core is forgiven in battery case 4; One end of described battery case 4 is a cover plate 7, and cover plate 7 has through hole 14, and an end of electrode terminal passes this through hole 14 to battery case 4 outsides; The electricity core comprises anode pole piece 5, cathode pole piece 6 and the barrier film 15 between anode pole piece 5 and cathode pole piece 6, described electrode terminal comprises positive terminal 2 and negative terminal 3, positive terminal 2 links to each other with anode pole piece 5 electricity, negative terminal 3 links to each other with cathode pole piece 6 electricity, connect by the electrode terminal serial or parallel connection between the cell, wherein, described electrode terminal is plates, and the annexation between the electrode terminal is for being fitted and connected; Seal by seal between cover plate 7 and the electrode terminal, described seal comprises rivet 8 and encapsulant 9, from inside to outside sealed successively material 9 of electrode terminal and rivet 8 clampings, and have adhesive on the contact-making surface between rivet 8 and the encapsulant 9 and on the contact-making surface between electrode terminal and the encapsulant 9.
According to battery pack provided by the invention, the electrode terminal of cell is that positive terminal and negative terminal are plates, by the electrode terminal of cell is fitted and a plurality of cells is electrically connected, there is the contact internal resistance between the cell hardly, and the electrode terminal after fitting can not become flexible, and therefore, compares with adopting the battery pack that is threaded between the existing cell, the internal resistance of battery pack of the present invention is less, connects reliable.And, seal by seal between cover plate and the electrode terminal, has adhesive on the contact-making surface between rivet and the encapsulant and/or on the contact-making surface between electrode terminal and the encapsulant, organic bonding realization the by encapsulant and electrode terminal, cover plate and rivet seals, enough bonding forces and adhesion are arranged between them, can guarantee air-tightness, water penetration requirement under the certain pressure, have higher sealing.
In addition, battery pack of the present invention adopts plates as electrode terminal, does not need to add connector in addition, but directly electrode terminal is fitted, and therefore, can reduce the weight and volume of battery pack.
Description of drawings
Fig. 1 is the schematic diagram of the battery pack of prior art;
Fig. 2 is the schematic diagram of battery pack of the present invention;
Fig. 3 is the cutaway view of the cell of battery pack of the present invention;
Fig. 4 is the schematic diagram by the seal sealing between the cover plate of cell of battery pack of the present invention and the electrode terminal;
Fig. 5 is the cutaway view of the through hole of the electrode terminal of expression battery pack of the present invention.
Embodiment
Below in conjunction with accompanying drawing battery pack provided by the invention is described in detail.
Shown in Fig. 2,3 and 4, battery pack provided by the invention comprises a plurality of cells 1, and described cell 1 comprises battery case 4, electric core and electrode terminal, and described electric core is forgiven in battery case 4; One end of described battery case 4 is a cover plate 7, and cover plate 7 has through hole 14, and an end of electrode terminal passes this through hole 14 to battery case 4 outsides; The electricity core comprises anode pole piece 5, cathode pole piece 6 and the barrier film 15 between anode pole piece 5 and cathode pole piece 6, described electrode terminal comprises positive terminal 2 and negative terminal 3, positive terminal 2 links to each other with anode pole piece 5 electricity, negative terminal 3 links to each other with cathode pole piece 6 electricity, connect by the electrode terminal serial or parallel connection between the cell, wherein, described electrode terminal is plates, and the annexation between the electrode terminal is for being fitted and connected; Seal by seal between cover plate 7 and the electrode terminal, described seal comprises rivet 8 and encapsulant 9, from inside to outside sealed successively material 9 of electrode terminal and rivet 8 clampings, and have adhesive on the contact-making surface between rivet 8 and the encapsulant 9 and on the contact-making surface between electrode terminal and the encapsulant 9.
Can be the annexation of serial or parallel connection between the described cell, can be by realizing serial or parallel connection between a plurality of cells by the electrode terminal that connects cell in a different manner.As shown in Figure 2, be series connection between the cell, electrode terminal of a cell is connected with the opposite polarity electrode terminal of an adjacent cell, and the opposite polarity electrode terminal of another electrode terminal cell adjacent with another is connected.The mode that cell is connected includes but not limited to following mode: the negative terminal 3 that is positioned at the cell of an end is connected with the positive terminal 2 of adjacent cell, the positive terminal 2 that perhaps is positioned at the cell of an end is connected with the negative terminal of adjacent cell, and the like, the opposite polarity pair of electrodes terminal welding of two adjacent cells, thereby two cells at the two ends of the battery pack that obtains respectively have an electrode terminal not to be connected with other electrode terminal, and the polarity of these two electrode terminals is opposite, as the both positive and negative polarity of battery pack.
Connected mode between the electrode terminal is for fitting, as long as the pellet electrode terminal that will need to connect fits together and makes certain bonding strength arranged between the electrode terminal, under the preferable case, the pellet electrode terminal welded.Welding can be existing various welding methods, and for example cold welding, supersonic welding, Laser Welding, soldering, flash butt welding, friction welding (FW), electric resistance welding etc. preferably adopt cold welding.Use cold welding only need provide enough static pressures just can realize reliable welding, and it is little, shockproof and do not have a relative displacement to be welded the object caloric value in the welding process.
Described cell can be any type of battery, as rectangular cell and cylindrical battery.For the ease of the electrode terminal and the assembled battery group of plates are installed, cell is preferably rectangular cell.The width of the electrode terminal of plates can be preferably 10-25% for the 5-40% of cell width; The thickness of electrode terminal can be preferably 3-15% for the 1-20 of cell thickness.Electrode terminal can be any electric conducting material, is preferably the composite sheet of sheet metal or any two kinds of metals of a kind of metal in copper, nickel and the aluminium.Under the preferable case, the part that is connected of electrode terminal is an identical materials, can improve the weld strength between the electrode terminal like this, further reduces the internal resistance of battery pack.Under the preferred situation, the part that is connected of electrode terminal is copper, and can adopt comparatively ripe soldering technology this moment, makes that welding is simpler, reliable between the cell, and is easy to dismounting, is convenient to the maintenance of battery pack.As shown in Figure 3, positive terminal 2 is made up of two sheet metal 2a and 2b, and sheet metal 2a is made of aluminum, and sheet metal 2b is made of copper; Negative terminal all is made of copper, and therefore, positive terminal 2 is copper with the part that negative terminal 3 is connected.
After a plurality of cells connections, can also battery pack be fixed according to existing method, for example, between adjacent cell, radiator structure is set, and use the cell after fastening structure will connect to be fixed together, prevent that occurrence positions moves between the cell.
As shown in Figure 4, cover plate 7 has through hole, and an end of electrode terminal passes this through hole to battery case 4 outsides, and is sealed by seal between cover plate 7 and the electrode terminal.Described seal comprises rivet 8 and encapsulant 9, from inside to outside sealed successively material 9 of electrode terminal and rivet 8 clampings, and have adhesive on the contact-making surface between rivet 8 and the encapsulant 9 and on the contact-making surface between electrode terminal and the encapsulant 9.Owing to have adhesive on the contact-making surface of encapsulant and other structure, therefore can improve bonding force and adhesion between them significantly, thereby improve the sealing of battery pack.Described adhesive can be the adhesive of existing various routines, for example one or more in epoxy glue, PUR and the rubber.DP101 or DP190 model adhesive as 3M company.
Under the preferable case, cover plate 7, rivet 8, encapsulant 9 and electrode terminal are structure as a whole.Can earlier rivet 8, encapsulant 9 and electrode terminal be integrated structure by Shooting Technique, again this overall structure be cooperated with the through hole of cover plate, and with cover plate and rivet welding; Also can be earlier with cover plate and rivet welding, cover plate 7 that will weld together then and rivet 8, encapsulant 9 and electrode terminal integrate structure by Shooting Technique.Cover plate 7, rivet 8, encapsulant 9 and electrode terminal are formed as one after the structure, can be at the contact portion applied adhesives of encapsulant and other structure, adhesive is distributed on the contact-making surface of encapsulant and other structure by osmosis.Adopt this preferred implementation, can more easily realize sealing effectiveness closely.
Shown in Fig. 4 or 5, the part of sealed material 9 clampings of electrode terminal has through hole 10.In injection moulding process, part encapsulant is filled in the described through hole 10, the encapsulant that is arranged in pellet electrode terminal both sides forms as one with the encapsulant that is filled in through hole 10, therefore, can strengthen the bond strength between encapsulant and the electrode terminal, and and then improve the sealing of battery pack.Described through hole 10 can be preferably a plurality of for one or more.When through hole 10 when being a plurality of, preferably evenly distribute equally spacedly.The shape of cross section of described through hole can have any shape, and is preferably circle, square or rhombus.
As shown in Figure 4, the part of the holding electrode terminal of rivet 8 has reinforcement 11.Reinforcement 11 can strengthen the bond strength between encapsulant and the rivet, and and then improves the sealing of battery pack.
Described encapsulant 9 can for routine various have insulation characterisitic, electrolyte resistance and hydrofluoric acid, can with the material of metlbond, but more preferably injected plastics material, for example one or more in plastics, rubber, resin and the adhesive glue.The example of described plastics includes but not limited to soluble poly tetrafluoroethene (PFA), polyether sulfone (PES) and modified polypropene (PP) etc.The example of described rubber includes but not limited to butadiene-styrene rubber, ethylene propylene diene rubber etc.The example of resin includes but not limited to epoxy resin and phenol aldehyde modified epoxy resin.The example of adhesive glue includes but not limited to bi-component epoxide-resin glue (containing epoxy resin and curing agent) and PUR.
Anode and cathode terminals can directly link to each other with positive/negative plate, for example, and can be with positive terminal and anode pole piece welding, with negative terminal and cathode pole piece welding.Under the preferable case, as shown in Figure 3, have positive pole ear 12 on the described anode pole piece 5, positive pole ear 12 is connected with positive terminal 2, and therefore, anode pole piece 5 is connected with positive terminal 2 by positive pole ear 12; Have negative lug 13 on the described cathode pole piece 6, negative lug 13 is connected with negative terminal 3, and therefore, cathode pole piece 6 is connected with negative terminal 3 by negative lug 13.
Positive pole ear and negative lug can be various electric conducting materials, are preferably in copper, nickel and the aluminium one or more.Under the preferable case, the part that positive pole ear is connected with positive terminal is an identical materials, and the part that negative lug is connected with negative terminal is an identical materials.The connected mode of electrode terminal and lug and lug and pole piece is preferably welding, for example supersonic welding, cold welding, Laser Welding, soldering, flash butt welding, friction welding (FW), electric resistance welding.
Described cell can be the existing various cells that are suitable for forming battery pack, for example alkaline secondary cell, lithium ion battery etc.The structure of the positive/negative plate of various cells has been conventionally known to one of skill in the art, does not repeat them here.
As can be seen from the above description, in battery pack provided by the invention, the electrode terminal of cell is that positive terminal and negative terminal are plates, by with the welding of the electrode terminal of cell and a plurality of cells are electrically connected, have the contact internal resistance between the cell hardly, and the electrode terminal after the welding can not become flexible, therefore, compare with adopting the battery pack that is threaded between the existing cell, can reduce the internal resistance of battery pack significantly.
In addition, battery pack of the present invention adopts plates as electrode terminal, does not need additionally to increase connector, can therefore, can reduce the weight and volume of battery pack directly with the electrode terminal welding.
Claims (10)
1. battery pack, this battery pack comprises a plurality of cells (1), and described cell (1) comprises battery case (4), electric core and electrode terminal, and described electric core is forgiven in battery case (4); One end of described battery case (4) is cover plate (7), and cover plate (7) has through hole (14), and an end of electrode terminal passes this through hole (14) to battery case (4) outside; The electricity core comprise anode pole piece (5), cathode pole piece (6) and be positioned at anode pole piece (5) and cathode pole piece (6) between barrier film (15), described electrode terminal comprises positive terminal (2) and negative terminal (3), positive terminal (2) links to each other with anode pole piece (5) electricity, negative terminal (3) links to each other with cathode pole piece (6) electricity, connect by the electrode terminal serial or parallel connection between the cell, it is characterized in that described electrode terminal is plates, the annexation between the electrode terminal is for being fitted and connected; Seal by seal between cover plate (7) and the electrode terminal, described seal comprises rivet (8) and encapsulant (9), from inside to outside sealed successively material of electrode terminal (9) and rivet (8) clamping, and have adhesive on the contact-making surface between rivet (8) and the encapsulant (9) and on the contact-making surface between electrode terminal and the encapsulant (9).
2. battery pack according to claim 1, wherein, cover plate (7), rivet (8), encapsulant (9) and electrode terminal are structure as a whole.
3. battery pack according to claim 1 and 2, wherein, cover plate (7) and rivet (8) welding.
4. battery pack according to claim 2, wherein, the part of sealed material (9) clamping of electrode terminal has through hole (10), part encapsulant is filled in this through hole (10), and the encapsulant that is arranged in pellet electrode terminal both sides forms as one with the encapsulant that is filled in through hole (10).
5. battery pack according to claim 1 and 2, wherein, the part of the holding electrode terminal of rivet (8) has reinforcement (11).
6. battery pack according to claim 1 and 2, wherein, encapsulant (9) is one or more in plastics, rubber, resin and the adhesive glue.
7. battery pack according to claim 1, wherein, electrode terminal of a cell is connected with the opposite polarity electrode terminal of an adjacent cell, and the opposite polarity electrode terminal of another electrode terminal cell adjacent with another is connected.
8. according to claim 1 or 7 described battery pack, wherein, the part that is connected of electrode terminal is an identical materials.
9. battery pack according to claim 1, wherein, described cell (1) is a rectangular cell, and the width of electrode terminal is the 5-40% of cell width, and the thickness of electrode terminal is the 1-20% of cell thickness.
10. battery pack according to claim 1, wherein, have positive pole ear (12) on the described anode pole piece (5), anode pole piece (5) is connected with positive terminal (2) by positive pole ear (12), and the part that positive pole ear (12) is connected with positive terminal (2) is an identical materials; Have negative lug (13) on the described cathode pole piece (6), cathode pole piece (6) is connected with negative terminal (3) by negative lug (13), and the part that negative lug (13) is connected with negative terminal (3) is an identical materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710145657.7A CN101388445B (en) | 2007-09-10 | 2007-09-10 | Battery set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710145657.7A CN101388445B (en) | 2007-09-10 | 2007-09-10 | Battery set |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101388445A CN101388445A (en) | 2009-03-18 |
| CN101388445B true CN101388445B (en) | 2010-12-08 |
Family
ID=40477715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200710145657.7A Active CN101388445B (en) | 2007-09-10 | 2007-09-10 | Battery set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101388445B (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010022668A1 (en) * | 2008-08-26 | 2010-03-04 | Byd Company Limited | Battery cover board assembly, battery having the same, battery pack and method of forming the same |
| CN101877413B (en) * | 2009-04-30 | 2013-10-30 | 比亚迪股份有限公司 | Monomer battery and power battery pack containing same |
| CN105679974B (en) * | 2009-11-28 | 2018-09-07 | 上海比亚迪有限公司 | The preparation method of battery cover board assembly |
| CN105742530B (en) * | 2009-11-28 | 2019-02-01 | 上海比亚迪有限公司 | Battery cover board assembly, preparation method and single battery and battery pack |
| CN102082244B (en) * | 2009-11-28 | 2016-06-15 | 上海比亚迪有限公司 | Battery cover board assembly, its preparation method and cell and set of cells |
| DE102010000842A1 (en) * | 2010-01-13 | 2011-07-14 | Robert Bosch GmbH, 70469 | Battery, battery system and method for connecting a plurality of batteries |
| CN102881845A (en) * | 2011-07-12 | 2013-01-16 | 湖南丰日电源电气股份有限公司 | Integrated terminal heat-sealing storage battery |
| CN103066234A (en) * | 2011-10-19 | 2013-04-24 | 黄泓雯 | Lithium battery and electrode link module thereof |
| CN103378374B (en) * | 2012-04-13 | 2016-07-13 | 万向电动汽车有限公司 | A kind of power module structure |
| US9634301B2 (en) * | 2015-01-05 | 2017-04-25 | Johnson Controls Technology Company | Lithium ion battery cell with secondary seal |
| CN105576183A (en) * | 2015-11-17 | 2016-05-11 | 骆驼集团华中蓄电池有限公司 | Lead-acid battery |
| CN110459729B (en) * | 2019-07-31 | 2022-05-10 | 中国电子科技集团公司第十八研究所 | Pole for battery and preparation method thereof |
| CN118676499A (en) * | 2023-03-20 | 2024-09-20 | 宁德时代新能源科技股份有限公司 | Battery cells, batteries and electrical devices |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1622364A (en) * | 2003-11-28 | 2005-06-01 | 松下电器产业株式会社 | Prismatic battery and manufacturing method thereof |
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2007
- 2007-09-10 CN CN200710145657.7A patent/CN101388445B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1622364A (en) * | 2003-11-28 | 2005-06-01 | 松下电器产业株式会社 | Prismatic battery and manufacturing method thereof |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2005-190885A 2005.07.14 |
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| CN101388445A (en) | 2009-03-18 |
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