CN111987369A - Composite power energy storage battery cell - Google Patents

Composite power energy storage battery cell Download PDF

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Publication number
CN111987369A
CN111987369A CN201910428604.9A CN201910428604A CN111987369A CN 111987369 A CN111987369 A CN 111987369A CN 201910428604 A CN201910428604 A CN 201910428604A CN 111987369 A CN111987369 A CN 111987369A
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CN
China
Prior art keywords
battery
capacitor
units
adjacent
unit
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
Application number
CN201910428604.9A
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Chinese (zh)
Inventor
李长明
吴超
辛程勋
曾庆欣
辛民昌
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Chongqing Jiuhuan Xinyue New Energy Technology Development Co ltd
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Chongqing Jiuhuan Xinyue New Energy Technology Development Co ltd
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by Chongqing Jiuhuan Xinyue New Energy Technology Development Co ltd filed Critical Chongqing Jiuhuan Xinyue New Energy Technology Development Co ltd
Priority to CN201910428604.9A priority Critical patent/CN111987369A/en
Priority to PCT/CN2020/088884 priority patent/WO2020233407A1/en
Publication of CN111987369A publication Critical patent/CN111987369A/en
Pending legal-status Critical Current

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    • 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
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M10/4264—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing with capacitors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G17/00—Structural combinations of capacitors or other devices covered by at least two different main groups of this subclass with other electric elements, not covered by this subclass, e.g. RC combinations
    • 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

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Electric Double-Layer Capacitors Or The Like (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

The invention discloses a composite power energy storage battery cell which comprises a polymer soft bag body, at least one battery unit and at least one capacitor unit, wherein the at least one battery unit and the at least one capacitor unit are arranged in the polymer soft bag body and are compounded into a whole. According to the composite power energy storage battery cell, the battery units and the capacitor units are combined together, so that the volume and the weight can be reduced, the energy density is improved, electric energy can be output to the outside through any combination among the battery units, among the capacitor units and between the battery units and the capacitor units, and under the condition that the energy storage capacity and the high-power discharge requirement are met, the output electric energy proportion of the battery units and the capacitor units can be controlled according to different application scenes, so that the battery units can run under the optimal multiplying power all the time, and the purpose of long-distance and long-life cycle use is achieved.

Description

Composite power energy storage battery cell
Technical Field
The invention belongs to the technical field of energy storage equipment, and particularly relates to a composite power energy storage battery cell.
Background
Chinese patent publication No. CN203503746U discloses a lithium ion battery and capacitor integrated battery, which includes a cylindrical steel shell with an open top, and a cylindrical capacitor disposed at the open top of the cylindrical steel shell, wherein a cylindrical electrical core is disposed inside the cylindrical steel shell, the cylindrical electrical core is composed of a positive plate with a positive tab, a negative plate with a negative tab and a diaphragm, which are sequentially stacked and wound, the negative tab at the bottom of the cylindrical electrical core is connected with the bottom of the cylindrical steel shell, and the top of the cylindrical steel shell is connected with the housing of the cylindrical capacitor and forms the negative electrode of the battery; the positive tab at cylindric electricity core top is linked together through the bottom of cylindric condenser and the positive pole of establishing at cylindric condenser top, the inside of cylindric box hat is equipped with lithium ion battery electrolyte.
The lithium ion battery and capacitor integrated battery is essentially that an independent capacitor and an independent lithium ion battery are mechanically arranged into a whole, namely compared with the volume of the capacitor and the lithium ion battery, the integrated battery does not achieve the purpose of reducing the volume. In addition, the capacitor and the lithium ion battery are directly connected in parallel through the structure of the integrated battery, so that the technical purpose of independent charging and discharging of the capacitor and the lithium ion battery cannot be realized, and the electric energy output mode of the battery and the capacitor cannot be adjusted according to the application scene.
As the field of energy storage technology develops, those skilled in the art find that both capacitors and batteries have their own characteristics and advantages and disadvantages. The capacitor has the advantages of fast charge and discharge and long service life, can be used for outputting high power, but has smaller energy storage capacity than a battery. The battery has the advantage of large energy storage capacity, but has the defect of slow charging and discharging, and the service life of the battery is greatly influenced when the battery is used for outputting high power.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a composite power energy storage cell, which not only can reduce the volume and weight and improve the energy density, but also can realize that a battery unit always operates at an optimal rate under the condition of meeting the energy storage capacity and high-power discharge requirements, so as to achieve the purpose of long-distance, long-life cycle use.
In order to achieve the purpose, the invention provides the following technical scheme:
a composite power energy storage battery cell comprises a polymer soft bag body, at least one battery unit and at least one capacitor unit, wherein the at least one battery unit and the at least one capacitor unit are arranged in the polymer soft bag body and are compounded into a whole.
Furthermore, each battery unit is provided with a positive electrode tab and a negative electrode tab; or the like, or, alternatively,
when the battery cells include at least 2 battery cells, all the battery cells may be further combined into at least one battery cell group, and at least one of the battery cell groups includes at least two battery cells connected in parallel or in series; and a positive electrode lug and a negative electrode lug are arranged after all the battery units in the battery unit group are connected according to a preset connection mode.
Furthermore, each capacitor unit is provided with a first tab and a second tab; or the like, or, alternatively,
when the capacitor units include at least 2 capacitor units, all the capacitor units may be further combined into at least one capacitor unit group, and at least one of the capacitor unit groups includes at least two capacitor units connected in parallel or in series; and a first tab and a second tab are arranged after all the capacitor units in the capacitor unit group are connected according to a preset connection mode.
Further, the battery unit comprises a battery diaphragm, a positive electrode and a negative electrode are respectively arranged on two sides of the battery diaphragm, and battery electrolyte is arranged between the positive electrode and the negative electrode;
the capacitor unit comprises a capacitor diaphragm, a first electrode and a second electrode are arranged on two sides of the capacitor diaphragm respectively, and capacitor electrolyte is arranged between the first electrode and the second electrode.
Further, the battery unit and the capacitor unit are laminated together;
when the adjacent battery units are connected in series or in parallel with the capacitor units, an ion insulator which is electrically conductive and ion-insulated is arranged between the adjacent battery units and the capacitor units;
when the adjacent battery units and the capacitor units are independent from each other, an insulator/collector plate which is electronically insulated and is isolated from ions is arranged between the adjacent battery units and the capacitor units.
Further, the battery cells are stacked together;
when two adjacent battery units are connected in series or in parallel, an electronically conductive and ion-isolated battery conductive layer is arranged between the two adjacent battery units;
When two adjacent battery units are independent from each other, an electronically-insulated and ion-isolated battery insulating layer is arranged between the two adjacent battery units.
Further, the capacitor units are stacked together;
when two adjacent capacitor units are connected in series or in parallel, a capacitor conducting layer which is electronically conducting and ion isolating is arranged between the two adjacent capacitor units;
when two adjacent capacitor units are independent from each other, a capacitor insulating layer which is electronically insulated and is isolated by ions is arranged between the two adjacent capacitor units.
The invention has the beneficial effects that:
according to the composite power energy storage battery cell, the battery units and the capacitor units are combined together, so that the volume and the weight can be reduced, the energy density is improved, electric energy can be output to the outside through any combination among the battery units, among the capacitor units and between the battery units and the capacitor units, and under the condition that the energy storage capacity and the high-power discharge requirement are met, the output electric energy proportion of the battery units and the capacitor units can be controlled according to different application scenes, so that the battery units can run under the optimal multiplying power all the time, and the purpose of long-distance and long-life cycle use is achieved.
Drawings
In order to make the object, technical scheme and beneficial effect of the invention more clear, the invention provides the following drawings for explanation:
fig. 1 is a schematic structural diagram of an embodiment of a composite power energy storage battery cell of the present invention, and particularly, a schematic structural diagram when a battery unit and a capacitor unit are combined into a whole;
FIG. 2 is a schematic structural diagram of a battery unit and a plurality of capacitor units combined together;
FIG. 3 is a schematic structural diagram of a plurality of battery units and a capacitor unit combined together;
FIG. 4 is a schematic structural diagram of a plurality of battery units and a plurality of capacitor units combined together;
fig. 5 is a schematic view of a stacked structure between two adjacent battery cells;
FIG. 6 is a schematic diagram of a stacked structure between two adjacent capacitor units;
FIG. 7 is a schematic diagram of a battery cell;
FIG. 8 is a schematic structural diagram of a capacitor unit;
fig. 9 is a schematic structural view when a positive electrode tab and a negative electrode tab are provided on each battery cell;
fig. 10 is a schematic structural view when a positive tab and a negative tab are provided on each cell group;
fig. 11 is a schematic structural view when a first tab and a second tab are provided on each capacitor unit;
Fig. 12 is a schematic structural diagram when a first tab and a second tab are disposed on each capacitor unit group.
Description of reference numerals:
11-a polymer softgel; 12-a battery cell; 13-a capacitive unit; 14-ionic insulator; 15-insulator/collector plate; 16-a battery conductive layer; 17-a battery insulating layer; 18-a capacitive conducting layer; 19-a capacitor insulating layer;
120-cell stack; 121-battery separator; 122-positive electrode; 123-negative electrode; 124-positive tab; 125-negative tab;
130-capacitor element group; 131-a capacitive diaphragm; 132-a first electrode; 133-a second electrode; 134-a first tab; 135-second tab.
Detailed Description
The present invention is further described with reference to the following drawings and specific examples so that those skilled in the art can better understand the present invention and can practice the present invention, but the examples are not intended to limit the present invention.
Fig. 1 is a schematic structural diagram of a hybrid energy storage cell according to an embodiment of the present invention. The composite power energy storage battery cell of the embodiment comprises a polymer soft bag body 11, and at least one battery unit 12 and at least one capacitor unit 13 which are arranged in the polymer soft bag body 11 and are compounded into a whole.
The battery cell 12 of the present embodiment includes a battery separator 121, a positive electrode 122 and a negative electrode 123 are provided on both sides of the battery separator 121, respectively, and a battery electrolyte is provided between the positive electrode 122 and the negative electrode 123, as shown in fig. 7.
The capacitor unit 13 of the present embodiment includes a capacitor diaphragm 131, a first electrode 132 and a second electrode 133 are respectively disposed on two sides of the capacitor diaphragm 131, and a capacitor electrolyte is disposed between the first electrode 132 and the second electrode 133, as shown in fig. 8.
Specifically, the battery cell 12 and the capacitor cell 13 of the present embodiment are stacked together. And when the adjacent battery unit 12 and the capacitor unit 13 are connected in series or in parallel, an ion insulator 14 which is electrically conductive and ionic-insulating is arranged between the adjacent battery unit 12 and the capacitor unit 13. When the adjacent battery cells 12 and capacitor cells 13 are independent from each other, an electronically insulating and ion-insulating insulator/collector plate 15 is provided between the adjacent battery cells 12 and capacitor cells 13. By arranging the ion insulator 14 or the insulator/current collector 15 between the battery unit 12 and the capacitor unit 13, the battery unit 12 and the capacitor unit 13 can be insulated in series, parallel and independent from each other at the physical structural level inside the battery cell, and electric energy can be output externally.
As shown in fig. 1, which is a schematic structural diagram of a battery cell 12 and a capacitor cell 13 combined together, an ionic insulator 14 or an insulator/collector 15 may be disposed between the battery cell 12 and the capacitor cell 13 according to different connection relationships between the battery cell 12 and the capacitor cell 13.
As shown in fig. 2, which is a schematic structural diagram of a battery cell 12 and a plurality of capacitor cells 13 combined together, an ionic insulator 14 or an insulator/collector 15 may be disposed between the battery cell 12 and the capacitor cells 13 according to different connection relationships between the battery cell 12 and the capacitor cells 13. The number of the capacitor units 13 may be set according to actual requirements, that is, the number of the capacitor units 13 may be 2, 3, 4 or more, and so on, and will not be described in detail again.
As shown in fig. 3, which is a schematic structural diagram of a plurality of battery cells 12 and a capacitor unit 13 combined together, an ionic insulator 14 or an insulator/collector 15 may be disposed between the battery cells 12 and the capacitor unit 13 according to different connection relationships between the battery cells 12 and the capacitor unit 13. The number of the battery units 12 can be set according to actual requirements, that is, the number of the battery units 12 can be 2, 3, 4 or more, and so on, and will not be described in detail again.
As shown in fig. 4, which is a schematic structural diagram of a plurality of battery cells 12 and a plurality of capacitor cells 13 combined together, an ionic insulator 14 or an insulator/current collector 15 may be disposed between the battery cells 12 and the capacitor cells 13 according to a difference in connection relationship between the battery cells 12 and the capacitor cells 13. The number of the battery units 12 can be set according to actual requirements, that is, the number of the battery units 12 can be 2, 3, 4 or more than 4, and so on, which will not be described in detail; similarly, the number of the capacitor units 13 may be set according to actual requirements, that is, the number of the capacitor units 13 may be 2, 3, 4, or more than 4, and so on, which will not be described in detail again. The number of the battery cells 12 and the number of the capacitor cells 13 may be arbitrarily set according to actual needs, that is, the number of the battery cells 12 and the number of the capacitor cells 13 may be equal or different, and will not be described in detail.
Specifically, the battery cells 12 of the present embodiment are stacked together. When two adjacent battery units 12 are connected in series or in parallel, an electronically conductive but ionically isolated battery conductive layer 16 is arranged between the two adjacent battery units 12; when two adjacent battery cells 12 are independent from each other, an electronically insulating and ion isolating battery insulating layer 17 is provided between the two adjacent battery cells 12. As shown in fig. 5, which is a schematic structural diagram of two adjacent battery units 12, a battery conductive layer 16 or a battery insulating layer 17 may be disposed between two adjacent battery units 12 according to a connection relationship between the battery units 12. By arranging the battery conducting layer 16 or the battery insulating layer 17 between two adjacent battery units 12, series connection, parallel connection and mutual independent insulation between the battery units 12 can be realized on the physical structure level inside the battery core, and electric energy can be output externally.
Specifically, the capacitor units 13 of the present embodiment are stacked together. When two adjacent capacitor units 13 are connected in series or in parallel, a capacitor conductive layer 18 which is electrically conductive and ion-isolated is arranged between the two adjacent capacitor units 13; when two adjacent capacitor units 13 are independent from each other, an electrically insulating and ion-isolating capacitor insulating layer 19 is provided between the two adjacent capacitor units 13. As shown in fig. 6, which is a schematic structural diagram of two adjacent capacitor units 13, a capacitor conductive layer 18 or a capacitor insulating layer 19 may be disposed between two adjacent capacitor units 13 according to a difference in connection relationship between the capacitor units 13. By arranging the capacitor conductive layer 18 or the capacitor insulating layer 19 between two adjacent capacitor units 13, series connection, parallel connection and mutual independence between the capacitor units 13 can be realized on the physical structure level inside the battery cell, and electric energy can be output externally.
Specifically, each battery unit 12 may be further provided with a positive tab 124 and a negative tab 125, so that the external circuit may be electrically connected to the positive tab 124 and the negative tab 125 of each battery unit 12, and the external circuit is used to realize series connection, parallel connection, series-parallel series connection between the battery units 12 and mutually independent output of electric energy, as shown in fig. 9.
When the battery cells 12 include at least 2, all of the battery cells 12 may be further combined into at least one battery cell line 120, and at least one of the battery cell lines 120 includes at least two battery cells 12 connected in series or in parallel with each other. When the number of the battery cell groups 120 is equal to or greater than 2, the number of the battery cells 12 included in each battery cell group 120 may be equal to or different from each other. A positive tab 124 and a negative tab 125 are provided after all the battery cells 12 in the battery cell group 120 are connected according to a predetermined connection manner. In this way, the external circuit can be electrically connected to the positive tab 124 and the negative tab 125 of each battery cell group 120, and the external circuit can be used to realize serial connection, parallel connection, serial-parallel connection, and mutually independent output of electric energy between the battery cell groups 120, as shown in fig. 10. Specifically, when the number of the battery units 12 in the battery unit group 120 is greater than or equal to 2, the battery conductive layer 16 may be disposed between two adjacent battery units in the same battery unit group 120, and series connection, parallel connection, and series-parallel connection between all the battery units 12 in the same battery unit group 120 may be implemented on the physical structure level inside the battery cell, which is not described in detail again.
Specifically, each capacitor unit 13 may further be provided with a first tab 134 and a second tab 135, so that the capacitor units may be electrically connected to the first tab 134 and the second tab 135 of each capacitor unit 13 through an external circuit, and the capacitor units 13 may be connected in series, in parallel, in series-parallel, and in parallel, and output electric energy independently from each other, as shown in fig. 11.
When the capacitor units 13 include at least 2 capacitor units, all the capacitor units 13 may be further combined into at least two capacitor unit groups 130, and at least one capacitor unit group 130 of all the capacitor unit groups 130 includes at least two capacitor units 13 connected in series or in parallel. When the number of the capacitor unit groups 130 is greater than or equal to 2, the number of the capacitor units 13 included in each capacitor unit group 130 may be equal to or different from each other. A first tab 134 and a second tab 135 are disposed after all the capacitor units 13 in the capacitor unit set 130 are connected according to a predetermined connection manner. In this way, the first tab 134 and the second tab 135 of each capacitor unit set 130 can be electrically connected to each other through an external circuit, and the series connection, the parallel connection, the series-parallel series connection, and the mutually independent output of the electric energy between the capacitor unit sets 130 can be realized through the external circuit, as shown in fig. 12. Specifically, when the number of the capacitor units 13 in the capacitor unit group 130 is greater than or equal to 2, the battery conductive layer 16 may be disposed between two adjacent battery units belonging to the same capacitor unit group 130, and series connection, parallel connection, and series-parallel connection between all the capacitor units 13 belonging to the same capacitor unit group 130 may be implemented on the physical structure level inside the battery cell, which is not described in detail again.
The composite power energy storage battery cell of the embodiment combines the battery units 12 and the capacitor units 13 together, which not only can reduce the volume and weight and improve the energy density, but also can realize the random combination of the electric energy output between the battery units 12, between the capacitor units 13 and between the battery units 12 and the capacitor units 13 on the internal physical structure layer of the battery cell and through an external circuit, and under the condition of meeting the requirements of energy storage capacity and high-power discharge point, the output electric energy proportion of the battery units 12 and the capacitor units 13 can be controlled according to different application scenes, so that the battery units 12 can always run under the optimal multiplying power, and the purpose of long-distance and long-life cycle use is achieved.
The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.

Claims (7)

1. A composite power energy storage battery cell is characterized in that: the battery comprises a polymer soft package body, and at least one battery unit and at least one capacitor unit which are arranged in the polymer soft package body and are compounded into a whole.
2. The composite power energy storage cell of claim 1, wherein:
each battery unit is provided with a positive electrode lug and a negative electrode lug; or the like, or, alternatively,
when the battery cells include at least 2 battery cells, all the battery cells may be further combined into at least one battery cell group, and at least one of the battery cell groups includes at least two battery cells connected in parallel or in series; the battery unit group is provided with a positive electrode lug and a negative electrode lug.
3. The composite power energy storage cell of claim 1, wherein:
each capacitor unit is provided with a first tab and a second tab; or the like, or, alternatively,
when the capacitor units include at least 2 capacitor units, all the capacitor units may be further combined into at least one capacitor unit group, and at least one of the capacitor unit groups includes at least two capacitor units connected in parallel or in series; the capacitor unit group is provided with a first tab and a second tab.
4. The composite power energy storage cell of any of claims 1 to 3, wherein:
The battery unit comprises a battery diaphragm, a positive electrode and a negative electrode are respectively arranged on two sides of the battery diaphragm, and battery electrolyte is arranged between the positive electrode and the negative electrode;
the capacitor unit comprises a capacitor diaphragm, a first electrode and a second electrode are arranged on two sides of the capacitor diaphragm respectively, and capacitor electrolyte is arranged between the first electrode and the second electrode.
5. The composite power energy storage cell of claim 4, wherein:
the battery unit and the capacitor unit are laminated together;
when the adjacent battery units are connected in series or in parallel with the capacitor units, an ion insulator which is electrically conductive and ion-insulated is arranged between the adjacent battery units and the capacitor units;
when the adjacent battery units and the capacitor units are independent from each other, an insulator/collector plate which is electronically insulated and is isolated from ions is arranged between the adjacent battery units and the capacitor units.
6. The composite power energy storage cell of claim 4, wherein:
the battery cells are stacked together;
when two adjacent battery units are connected in series or in parallel, an electronically conductive and ion-isolated battery conductive layer is arranged between the two adjacent battery units;
When two adjacent battery units are independent from each other, an electronically-insulated and ion-isolated battery insulating layer is arranged between the two adjacent battery units.
7. The composite power energy storage cell of claim 4, wherein:
the capacitor units are stacked together;
when two adjacent capacitor units are connected in series or in parallel, a capacitor conducting layer which is electronically conducting and ion isolating is arranged between the two adjacent capacitor units;
when two adjacent capacitor units are independent from each other, a capacitor insulating layer which is electronically insulated and is isolated by ions is arranged between the two adjacent capacitor units.
CN201910428604.9A 2019-05-22 2019-05-22 Composite power energy storage battery cell Pending CN111987369A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201910428604.9A CN111987369A (en) 2019-05-22 2019-05-22 Composite power energy storage battery cell
PCT/CN2020/088884 WO2020233407A1 (en) 2019-05-22 2020-05-07 Hybrid power energy storage cell, unit, module, and device, and control method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910428604.9A CN111987369A (en) 2019-05-22 2019-05-22 Composite power energy storage battery cell

Publications (1)

Publication Number Publication Date
CN111987369A true CN111987369A (en) 2020-11-24

Family

ID=73435932

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910428604.9A Pending CN111987369A (en) 2019-05-22 2019-05-22 Composite power energy storage battery cell

Country Status (1)

Country Link
CN (1) CN111987369A (en)

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