CN111146508A - Preparation method of sealed cylindrical nickel-hydrogen single battery and battery pack for rail transit - Google Patents
Preparation method of sealed cylindrical nickel-hydrogen single battery and battery pack for rail transit Download PDFInfo
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- CN111146508A CN111146508A CN202010028535.5A CN202010028535A CN111146508A CN 111146508 A CN111146508 A CN 111146508A CN 202010028535 A CN202010028535 A CN 202010028535A CN 111146508 A CN111146508 A CN 111146508A
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- Prior art keywords
- battery
- nickel
- positive plate
- sealed cylindrical
- diaphragm
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- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 43
- 239000001257 hydrogen Substances 0.000 title claims abstract description 43
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 33
- 239000003792 electrolyte Substances 0.000 claims abstract description 17
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 claims abstract description 12
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims abstract description 12
- 238000003466 welding Methods 0.000 claims abstract description 10
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 8
- 239000010959 steel Substances 0.000 claims abstract description 8
- 238000004804 winding Methods 0.000 claims abstract description 7
- 239000000178 monomer Substances 0.000 claims abstract description 6
- 238000003825 pressing Methods 0.000 claims abstract description 4
- 238000005096 rolling process Methods 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims abstract description 4
- 238000004519 manufacturing process Methods 0.000 claims description 16
- 239000000956 alloy Substances 0.000 claims description 11
- 229910045601 alloy Inorganic materials 0.000 claims description 11
- 239000000843 powder Substances 0.000 claims description 11
- 239000003513 alkali Substances 0.000 claims description 8
- 238000004513 sizing Methods 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 3
- 239000002002 slurry Substances 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000002347 injection Methods 0.000 claims 1
- 239000007924 injection Substances 0.000 claims 1
- 238000010792 warming Methods 0.000 abstract 1
- 229910052759 nickel Inorganic materials 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000011056 performance test Methods 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
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Classifications
-
- 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
- H01M10/24—Alkaline accumulators
- H01M10/28—Construction or manufacture
- H01M10/286—Cells or batteries with wound or folded electrodes
-
- 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
- H01M10/24—Alkaline accumulators
- H01M10/30—Nickel accumulators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
-
- 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
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Battery Mounting, Suspending (AREA)
- Secondary Cells (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The invention provides a preparation method of a sealed cylindrical nickel-hydrogen monomer battery, which comprises the steps of firstly winding a positive plate, a negative plate and a diaphragm in a mode that the positive plate and the negative plate are staggered up and down to exceed the diaphragm to form an electrode assembly, then welding a positive current collecting disc at one end of the positive plate of the electrode assembly, which exceeds the diaphragm, welding a negative current collecting disc at one end of the negative plate of the electrode assembly, which exceeds the diaphragm, then placing the electrode assembly in a steel shell, and finally preparing the sealed cylindrical nickel-hydrogen monomer battery through a rolling groove, welding a cover cap on the positive current collecting disc, injecting electrolyte, pressing the cover cap, sealing, pre-charging, warming, forming and grading; a white edge part with a certain width from the edge to the inside is reserved at the upper end of the positive plate, and a nickel-plated steel strip is welded on the outward winding surface of the white edge part; the electrolyte is a binary electrolyte prepared from potassium hydroxide and lithium hydroxide. The invention also provides a battery pack for rail transit, which is manufactured by using the battery manufactured by the method. The method has simple and feasible process, and the prepared battery has the characteristic of wide temperature range and good low-temperature discharge performance.
Description
Technical Field
The invention relates to a preparation method of a sealed cylindrical nickel-hydrogen single battery, and also relates to a battery pack for rail transit, which is manufactured by using the sealed cylindrical nickel-hydrogen single battery prepared by the method.
Background
At present, the storage battery for rail transit is generally an open type square storage battery, electrolyte needs to be supplemented every 3-6 months in the using process, the operation is inconvenient, meanwhile, due to the fact that the battery capacity is large, the assembly automation difficulty is large, the production efficiency is low, and other civil cylindrical nickel-hydrogen batteries have the problems that the consistency is poor, the low-temperature (-40 ℃) discharge cannot meet the requirements and the like, a new battery which can meet the requirements in all aspects is urgently needed to be developed.
Disclosure of Invention
The invention aims to provide the preparation method of the sealed cylindrical nickel-hydrogen single battery, which has the advantages of simple and feasible process and high production efficiency. Meanwhile, the invention also provides a battery pack for rail transit, which is made of the sealed cylindrical nickel-hydrogen single battery prepared by the method.
The invention is realized by the following scheme:
a sealed cylindrical nickel-hydrogen monomer battery preparation method, coil positive plate, negative pole piece, diaphragm and exceed the diaphragm way (namely the upper end of the positive plate exceeds the diaphragm upper edge, the lower end of the negative plate exceeds the diaphragm lower edge) and form the electrode assembly in upper and lower dislocation of the positive plate, then exceed the one end of the diaphragm of the positive plate of the said electrode assembly and weld the positive current collecting plate, exceed one end of the diaphragm of the said negative plate of the electrode assembly and weld the negative current collecting plate, then place the electrode assembly in the steel casing, finally through rolling the trough-welding block of positive current collecting plate-injecting electrolyte-pressing the block-sealing-pre-charge the temperature-make-become-partial volume make cylindrical sealed nickel-hydrogen monomer battery; a white edge part with a certain width from the edge to the inside is reserved at the upper end of the positive plate, and a nickel-plated steel strip is welded on the outward winding surface of the white edge part; the electrolyte is a binary electrolyte prepared from potassium hydroxide and lithium hydroxide.
Further, the density of the electrolyte is 1.24-1.27 g/cm3，OH－The molar concentration of (A) is 5.0-8.0 mol/L, K+The molar concentration of (A) is 4.0-6.0 mol/L, Li+The molar concentration of (a) is 0.2-1.0 mol/L.
Further, the width of the white edge part of the positive plate is 4% -9% of the width of the positive plate.
Furthermore, the alloy powder used by the negative plate is firstly crushed and subjected to alkali treatment and then used for preparing negative slurry, the particle size of the crushed alloy powder is 18-28 microns, and the magnetic susceptibility of the alloy powder after the alkali treatment is 1-3%.
Furthermore, the positive plate is manufactured by adopting a wet-process sizing process of single-pump spraying, and the negative plate is manufactured by adopting a wet-process sizing process.
A battery pack for rail transit comprises a plurality of sealed cylindrical nickel-hydrogen single batteries prepared by the preparation method of the sealed cylindrical nickel-hydrogen single batteries, wherein the sealed cylindrical nickel-hydrogen single batteries are divided into a plurality of parts, and the cylindrical sealed nickel-hydrogen single batteries are mutually connected in series to form a battery pack; the battery packs are divided into a plurality of parts, and the battery packs of each part are mutually connected in parallel or in series to form a battery pack module; the plurality of battery pack modules are connected in series or in parallel to form a battery pack.
The preparation method of the sealed cylindrical nickel-hydrogen single battery has the following advantages:
1. compared with the open type nickel-hydrogen single battery used by the battery pack in the current rail transit market, the sealed cylindrical nickel-hydrogen single battery prepared by the method has better sealing performance and does not need to be periodically supplemented with electrolyte;
2. the method has simple and feasible process and high production efficiency;
3. the sealed cylindrical nickel-hydrogen single battery prepared by the method has the advantages of good performance consistency, stable product performance and high battery energy density, and can well meet the requirements of a battery pack for rail transit; the combination can be realized in a series, parallel or series-parallel mode, the forms are flexible and various, the requirements of different markets can be met, and the market competitiveness is strong;
4. the sealed cylindrical nickel-hydrogen single battery prepared by the method has the characteristic of wide temperature range, can be normally used at the temperature of-55 ℃, particularly has low temperature performance, can discharge for more than 6 hours at the temperature of-40 ℃ by adopting 0.1C, is far beyond the similar cylindrical products, and has strong market competitiveness.
The battery pack for rail transit, which is made of the sealed cylindrical nickel-hydrogen single battery prepared by the method, has better low-temperature discharge performance, and can meet the use requirement without periodically supplementing electrolyte.
Drawings
Fig. 1 is a 0.1C discharge curve at-40C for a sealed cylindrical nickel-hydrogen cell D7500 prepared by the method of example 1.
Detailed Description
The present invention will be further described with reference to the following examples, but the present invention is not limited to the description of the examples.
Example 1
A preparation method of a sealed cylindrical nickel-hydrogen single battery D7500 comprises the following steps:
(a) manufacturing a positive plate: manufacturing a positive plate by adopting a wet sizing process of single-pump spraying according to process requirements, reserving a white edge part with a certain width from the edge to the inside at the upper end of the positive plate, wherein the width of the white edge part of the positive plate is 6% of the width of the positive plate, and welding a nickel-plated steel strip on the outward surface of the winding of the white edge part by adopting ultrasonic waves;
(b) and (3) manufacturing a negative plate: firstly crushing alloy powder used by the negative plate, controlling the particle size of the crushed alloy powder to be 18-28 mu m, then carrying out alkali treatment on the crushed alloy powder according to the existing alkali treatment process, controlling the magnetic susceptibility of the alloy powder after the alkali treatment to be 1-3%, then preparing negative slurry from the alloy powder after the alkali treatment according to the process requirements, and manufacturing the negative plate according to the process requirements by adopting a wet sizing process;
(c) manufacturing a battery: winding the positive plate prepared in the step (a), the negative plate prepared in the step (b) and the diaphragm to form an electrode group in a mode that the positive plate and the negative plate are staggered up and down to exceed the diaphragm (namely, the upper end part of the positive plate exceeds the upper edge of the diaphragm, and the lower end part of the negative plate exceeds the lower edge of the diaphragm), welding a positive current collecting disc at one end of the positive plate of the electrode group, which exceeds the diaphragm, welding a negative current collecting disc at one end of the negative plate of the electrode group, then placing the electrode group in a steel shell, and finally preparing the cylindrical sealed nickel-hydrogen monomer battery through rolling groove, welding a cover cap by the positive current collecting disc, injecting electrolyte, pressing the cover cap, sealing, pre-charging, forming and capacity dividing according to the process requirements. Wherein the electrolyte is a binary electrolyte prepared from potassium hydroxide and lithium hydroxide, and the density of the electrolyte is 1.24-1.27 g/cm3，OH－The molar concentration of (A) is 5.0-8.0 mol/L, K+The molar concentration of (A) is 4.0-6.0 mol/L, Li+The molar concentration of (a) is 0.2-1.0 mol/L.
The sealed cylindrical nickel-hydrogen single battery D7500 (rated voltage is 1.2V) prepared by the method of the embodiment 1 is subjected to a 0.1C discharge performance test at a low temperature of-40 ℃ (discharge cut-off voltage is 1.0V), the discharge curve is shown in figure 1, and as can be seen from figure 1, the discharge time of the sealed cylindrical nickel-hydrogen single battery D7500 at the low temperature of-40 ℃ and at the 0.1C can reach 8 h.
Example 2
A method of manufacturing a sealed cylindrical nickel metal hydride unit cell D6000, which has substantially the same steps as those of the method of manufacturing the sealed cylindrical nickel metal hydride unit cell D7500 of example 1, except that: the width of the white edge part of the positive plate is 9 percent of the width of the positive plate.
Example 3
A method of manufacturing a sealed cylindrical nickel-hydrogen cell D8000, which has substantially the same steps as those of the method of manufacturing the sealed cylindrical nickel-hydrogen cell D7500 of example 1, except that: the width of the white edge part of the positive plate is 4% of the width of the positive plate.
Example 4
A battery pack for rail transit, comprising 240 sealed cylindrical nickel-hydrogen single batteries D7500 (rated voltage is 1.2V) prepared by the preparation method of the sealed cylindrical nickel-hydrogen single battery D7500 described in example 1, wherein the 240 sealed cylindrical nickel-hydrogen single batteries are divided into 40 parts, and each part of the cylindrical sealed nickel-hydrogen single batteries are connected in series to form a battery pack (the voltage of the battery pack is 7.2V, and the capacity is 7.5 Ah); the 40 groups of battery packs are divided into 2 parts, and each part of battery packs are connected in parallel to form a battery pack module (the voltage of the battery pack module is 7.2V, and the capacity is 150 Ah); the 2 battery modules were connected in series to form a battery pack (voltage of the battery pack was 14.4V, capacity was 150 Ah).
Example 5
A battery pack for rail transit, comprising 300 sealed cylindrical nickel-hydrogen single batteries D6000 (rated voltage is 1.2V) prepared by the preparation method of the sealed cylindrical nickel-hydrogen single battery D6000 as described in example 2, wherein the 300 sealed cylindrical nickel-hydrogen single batteries are divided into 60 parts, and each part of the cylindrical sealed nickel-hydrogen single batteries are connected in series to form a battery pack (the voltage of the battery pack is 6.0V, and the capacity is 6 Ah); the 60 groups of battery packs are divided into 30 parts, and the battery packs are connected in series to form a battery pack module (the voltage of the battery pack module is 12V, and the capacity of the battery pack module is 6 Ah); the 30 battery modules are connected in parallel to form a battery pack (the voltage of the battery pack is 12V, and the capacity is 180 Ah).
Claims (6)
1. A preparation method of a sealed cylindrical nickel-hydrogen single battery is characterized by comprising the following steps: firstly, winding a positive plate, a negative plate and a diaphragm in a mode that the positive plate and the negative plate are staggered up and down to exceed the diaphragm to form an electrode group, then welding a positive current collecting disc at one end of the positive plate of the electrode group, which exceeds the diaphragm, welding a negative current collecting disc at one end of the negative plate of the electrode group, which exceeds the diaphragm, then placing the electrode group in a steel shell, and finally preparing the cylindrical sealed nickel-hydrogen monomer battery through a rolling groove, the positive current collecting disc and a cap, electrolyte injection, cap pressing, sealing, pre-charging, formation and capacity grading; a white edge part with a certain width from the edge to the inside is reserved at the upper end of the positive plate, and a nickel-plated steel strip is welded on the outward winding surface of the white edge part; the electrolyte is a binary electrolyte prepared from potassium hydroxide and lithium hydroxide.
2. The method of manufacturing a sealed cylindrical nickel-hydrogen cell according to claim 1, wherein: the density of the electrolyte is 1.24-1.27 g/cm3，OH－The molar concentration of (A) is 5.0-8.0 mol/L, K+The molar concentration of (A) is 4.0-6.0 mol/L, Li+The molar concentration of (a) is 0.2-1.0 mol/L.
3. The method of manufacturing a sealed cylindrical nickel-hydrogen cell according to claim 1, wherein: the width of the white edge part of the positive plate is 4-9% of the width of the positive plate.
4. A method for manufacturing a sealed cylindrical nickel-metal hydride unit cell as claimed in any one of claims 1 to 3, wherein: the alloy powder used by the negative plate is firstly crushed and subjected to alkali treatment and then used for preparing negative slurry, the particle size of the crushed alloy powder is 18-28 mu m, and the magnetic susceptibility of the alloy powder after the alkali treatment is 1-3%.
5. A method for manufacturing a sealed cylindrical nickel-metal hydride unit cell as claimed in any one of claims 1 to 3, wherein: the positive plate is manufactured by adopting a wet-process sizing process of single-pump spraying, and the negative plate is manufactured by adopting a wet-process sizing process.
6. A battery package for track traffic, its characterized in that: the method comprises the steps of preparing a plurality of sealed cylindrical nickel-hydrogen single batteries according to any one of claims 1 to 5, wherein the plurality of sealed cylindrical nickel-hydrogen single batteries are divided into a plurality of parts, and the cylindrical sealed nickel-hydrogen single batteries are mutually connected in series to form a battery pack; the battery packs are divided into a plurality of parts, and the battery packs of each part are mutually connected in parallel or in series to form a battery pack module; the plurality of battery pack modules are connected in series or in parallel to form a battery pack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010028535.5A CN111146508A (en) | 2020-01-11 | 2020-01-11 | Preparation method of sealed cylindrical nickel-hydrogen single battery and battery pack for rail transit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010028535.5A CN111146508A (en) | 2020-01-11 | 2020-01-11 | Preparation method of sealed cylindrical nickel-hydrogen single battery and battery pack for rail transit |
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| CN111146508A true CN111146508A (en) | 2020-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010028535.5A Pending CN111146508A (en) | 2020-01-11 | 2020-01-11 | Preparation method of sealed cylindrical nickel-hydrogen single battery and battery pack for rail transit |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5006426A (en) * | 1989-08-23 | 1991-04-09 | Matsushita Electric Industrial Co., Ltd. | Alkaline storage battery |
| CN201142346Y (en) * | 2007-11-20 | 2008-10-29 | 浙江天能电子电器有限公司 | Double electric pole columns power type square body nickel-hydrogen battery |
| CN201904403U (en) * | 2010-12-17 | 2011-07-20 | 广州市云通磁电有限公司 | Special positive electrode for nickel-hydrogen power battery |
| CN202352751U (en) * | 2011-12-07 | 2012-07-25 | 深圳市赛科龙电源科技有限公司 | High-stability battery |
| CN204230370U (en) * | 2014-09-03 | 2015-03-25 | 郴州格兰博科技有限公司 | A kind of nickel-hydrogen battery structure |
| CN105789713A (en) * | 2016-03-23 | 2016-07-20 | 惠州时代电池有限公司 | Long-life cylindrical Ni/MH secondary battery and preparation method thereof |
-
2020
- 2020-01-11 CN CN202010028535.5A patent/CN111146508A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5006426A (en) * | 1989-08-23 | 1991-04-09 | Matsushita Electric Industrial Co., Ltd. | Alkaline storage battery |
| CN201142346Y (en) * | 2007-11-20 | 2008-10-29 | 浙江天能电子电器有限公司 | Double electric pole columns power type square body nickel-hydrogen battery |
| CN201904403U (en) * | 2010-12-17 | 2011-07-20 | 广州市云通磁电有限公司 | Special positive electrode for nickel-hydrogen power battery |
| CN202352751U (en) * | 2011-12-07 | 2012-07-25 | 深圳市赛科龙电源科技有限公司 | High-stability battery |
| CN204230370U (en) * | 2014-09-03 | 2015-03-25 | 郴州格兰博科技有限公司 | A kind of nickel-hydrogen battery structure |
| CN105789713A (en) * | 2016-03-23 | 2016-07-20 | 惠州时代电池有限公司 | Long-life cylindrical Ni/MH secondary battery and preparation method thereof |
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Effective date of registration: 20210721 Address after: 410100 first floor, building 10, advanced energy storage and energy conservation demonstration Industrial Park, No. 169, Section 2, Renmin East Road, Changsha Economic and Technological Development Zone, Hunan Province Applicant after: NATIONAL ENGINEERING RESEARCH OF ADVANCED ENERGY STORAGE MATERIALS Address before: 410205 No. 348, west slope, Tongzi high tech Development Zone, Hunan, Changsha Applicant before: HUNAN COPOWER EV BATTERY Co.,Ltd. |
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Application publication date: 20200512 |