CN113013538A - On-orbit maintenance-free lithium ion storage battery pack for high-specific energy bomb - Google Patents
On-orbit maintenance-free lithium ion storage battery pack for high-specific energy bomb Download PDFInfo
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- CN113013538A CN113013538A CN202110220763.7A CN202110220763A CN113013538A CN 113013538 A CN113013538 A CN 113013538A CN 202110220763 A CN202110220763 A CN 202110220763A CN 113013538 A CN113013538 A CN 113013538A
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 62
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 62
- 238000003860 storage Methods 0.000 title claims abstract description 46
- 238000004321 preservation Methods 0.000 claims abstract description 38
- 238000009413 insulation Methods 0.000 claims abstract description 9
- 238000012423 maintenance Methods 0.000 claims abstract description 9
- 210000001503 joint Anatomy 0.000 claims abstract description 4
- 238000010438 heat treatment Methods 0.000 claims description 24
- 229920002379 silicone rubber Polymers 0.000 claims description 21
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 6
- 238000012360 testing method Methods 0.000 claims description 5
- 238000011056 performance test Methods 0.000 claims description 4
- 229910000861 Mg alloy Inorganic materials 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 239000012774 insulation material Substances 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 230000003647 oxidation Effects 0.000 claims description 3
- 238000007254 oxidation reaction Methods 0.000 claims description 3
- 239000003973 paint Substances 0.000 claims description 3
- 238000007747 plating Methods 0.000 claims description 3
- 229920001721 polyimide Polymers 0.000 claims description 3
- 238000012216 screening Methods 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- 239000000178 monomer Substances 0.000 claims description 2
- 238000004146 energy storage Methods 0.000 claims 2
- 230000001186 cumulative effect Effects 0.000 claims 1
- 230000007123 defense Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/615—Heating or keeping warm
-
- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/63—Control systems
- H01M10/637—Control systems characterised by the use of reversible temperature-sensitive devices, e.g. NTC, PTC or bimetal devices; characterised by control of the internal current flowing through the cells, e.g. by switching
-
- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/653—Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
-
- 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)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Automation & Control Theory (AREA)
- Secondary Cells (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention discloses an on-orbit maintenance-free lithium ion storage battery pack for high-specific energy bomb, comprising: the battery comprises a shell, a heat-preservation bottom plate, a heat-preservation front plate, a battery cover, a heat-preservation top plate, heat-preservation side plates, a battery cell stack assembly, a heat-preservation rear plate and a screw II; the battery cell stack assembly is arranged in the shell and is packaged by the battery cover; the battery cover is in butt joint with the shell and then is fastened through a screw II; a heat preservation front plate, two heat preservation side plates and a heat preservation side plate are respectively arranged between the periphery of the battery cell stack assembly and the shell; a heat insulation bottom plate is arranged between the bottom of the cell stack assembly and the shell; a heat preservation top plate is arranged between the top of the battery cell stack assembly and the battery cover. The on-orbit maintenance-free lithium ion storage battery pack for the high-specific-energy bomb can be applied to the field of space defense, has higher volumetric specific energy and gravimetric specific energy, can stably output electric energy and supplies power to the bomb equipment; the device can be stored and operated on the rail for 5 years without maintenance, and electrical performance maintenance and balanced management are not needed.
Description
Technical Field
The invention belongs to the technical field of batteries, and particularly relates to an on-orbit maintenance-free high-specific energy bomb lithium ion storage battery pack.
Background
At present, the on-orbit storage application example of the lithium ion storage battery pack for domestic temporary use without bullets has the main problems that: the battery pack has the advantages of large volume, large capacity and low energy density, and the battery pack can be maintained in a balanced manner only by being equipped with power management system equipment with complex functions.
Disclosure of Invention
The technical problem of the invention is solved: the on-orbit maintenance-free lithium ion storage battery pack for the high-specific-energy bomb can be applied to the field of space defense, has high volumetric specific energy and gravimetric specific energy, can stably output electric energy and supplies power to a bomb equipment instrument; the device can be stored and operated on the rail for 5 years without maintenance, and electrical performance maintenance and balanced management are not needed.
In order to solve the technical problem, the invention discloses an on-track maintenance-free high-specific energy bomb lithium ion storage battery pack, which comprises: the battery comprises a shell, a heat-preservation bottom plate, a heat-preservation front plate, a battery cover, a heat-preservation top plate, heat-preservation side plates, a battery cell stack assembly, a heat-preservation rear plate and a screw II;
the battery cell stack assembly is arranged in the shell and is packaged by the battery cover; the battery cover is in butt joint with the shell and then is fastened through a screw II;
a heat-preservation front plate, two heat-preservation side plates and a heat-preservation rear plate are respectively arranged between the periphery of the cell stack assembly and the shell;
a heat insulation bottom plate is arranged between the bottom of the cell stack assembly and the shell;
a heat preservation top plate is arranged between the top of the battery cell stack assembly and the battery cover.
In the on-track maintenance-free high-specific-energy-bomb lithium ion storage battery pack, a shell and a battery cover are processed by magnesium alloy materials to form a battery pack shell; the surface of the battery pack shell is firstly subjected to nickel plating treatment for oxidation resistance, and then is subjected to thermal control black paint coating treatment so as to meet the requirement of the emissivity of an on-orbit hemisphere of a spacecraft; the wall thickness of the battery pack case is 2 mm; the bottom of the shell is integrally milled to form four mounting support legs.
In the above-mentioned lithium ion battery for on-orbit maintenance-free high specific energy cartridge, still include: the bolt I and a plurality of connectors; wherein, the upper surface of the battery cover is provided with a plurality of bosses; each connector is respectively installed on the corresponding boss through a set of four screws I.
In the on-track maintenance-free high-specific energy cartridge lithium ion battery pack, when a grounding requirement exists, a long screw is used for replacing one screw I in a group of four screws I; one end of the long screw penetrates through the battery cover and then is connected with the grounding terminal, and the grounding terminal is led out through any point on the connector after being welded with a wire.
In the above-mentioned lithium ion battery pack for on-track maintenance-free high specific energy cartridge, the cell stack assembly includes: the device comprises an insulating side plate I, an insulating bottom plate, a bus piece, a plurality of single batteries, a plurality of NTC thermistors, an insulating top plate, an insulating side plate II and a heating belt;
a plurality of single batteries are bonded and densely stacked by adopting silicon rubber to form a battery core stack;
integrally sticking a heating tape on the single positive and negative side bus-bar sheets on the electric core stack; the outer side of the heating belt is pasted with an insulation side plate I by adopting silicon rubber;
a plurality of NTC thermistors are arranged outside the cell stack and used for temperature collection;
the left side and the right side of the cell stack are respectively pasted with an insulating side plate II by adopting silicon rubber, the bottom of the cell stack is pasted with an insulating bottom plate by adopting silicon rubber, and the top of the cell stack is pasted with an insulating top plate by adopting silicon rubber.
In the lithium ion storage battery pack for the on-track maintenance-free high specific energy bomb, energy type cylindrical single batteries are selected, 1.1-1.3 circles of insulating tapes are wrapped around each single battery, then the insulating tapes are arranged regularly according to the parallel-series principle, the silicon rubber is coated at the line contact position of every two single batteries to realize the integral curing of a battery cell stack, and the series-parallel connection is realized by adopting the spot welding of a confluence sheet after the curing; after spot welding, directly sticking heating tapes on the confluence plates on the two sides; wherein, polyimide film heating band is selected for the heating band, and is thin and light, reduces the space ratio.
In the lithium ion storage battery pack for the on-track maintenance-free high specific energy bomb, the insulating top plate is partially hollowed, NTC thermistors are respectively placed at the hollowed parts, and the NTC thermistors are tightly attached to the single battery and are fixedly bonded by using silicon rubber to detect the internal temperature of the lithium ion storage battery pack.
In the on-track maintenance-free high-specific energy bomb lithium ion storage battery pack, the shell, the battery cover and the battery cell stack assembly are filled with heat insulation materials, and heat conduction silica gel is filled into a gap to realize tight assembly.
In the lithium ion storage battery pack for the on-rail maintenance-free high-specific energy bomb, the lithium ion storage battery pack initially runs at 50% -70% of SOC during the on-rail storage running period, the lithium ion storage battery pack discharges once through the bomb load test every half year, the half year accumulated power consumption does not exceed 30%, the on-rail charging is carried out once every half year, and the on-rail charging is carried out at the current of not higher than 0.1C to 50% -70% of SOC.
In the on-track maintenance-free high-specific-energy-bomb lithium ion storage battery pack, the lithium ion storage battery pack collects an NTC thermistor through an external circuit and controls heating on and off, so that the lithium ion storage battery pack is always in the working environment with the optimal electrical performance; by the control of screening and matching of the single batteries, the operation in the on-rail semi-electric state and the guarantee of the optimal electric performance test environment, the lithium ion storage battery pack does not need to carry out electric performance maintenance and equalizing charge in 5 years on the rail, and the size and the weight of the on-board charging equipment assembly are saved.
The invention has the following advantages:
(1) the invention discloses an on-rail maintenance-free high-specific-energy-bomb lithium ion storage battery pack which is high in mass specific energy and volume specific energy and can be stored and operated on a rail for 5 years without maintenance. Firstly, in the production process, energy type cylindrical single batteries are strictly screened, matched and placed into a shell, so that the consistency level of the energy type cylindrical single batteries is ensured; secondly, initially operating at 50% -70% SOC during rail storage, passing the on-board load irregular discharge test of the lithium ion storage battery pack every half year, wherein the discharge depth does not exceed 30%, and charging on the rail once every half year to 50% -70% SOC; and finally, in order to ensure that the lithium ion storage battery pack is at the optimal environmental temperature during on-track charging and discharging, the heating on-off is controlled by collecting the temperature of the lithium ion storage battery pack through an external circuit, so that the lithium ion storage battery pack is always in the optimal electrical performance working environment.
(2) The invention discloses an on-orbit maintenance-free lithium ion storage battery pack for a high-specific-energy bomb, which is small and exquisite in appearance, compact in structure and high in mechanical strength, reduces the total weight of equipment on the bomb and relieves the pressure of a carrier.
Drawings
FIG. 1 is a schematic structural diagram of an on-track maintenance-free high specific energy cartridge lithium ion battery pack according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a cell stack assembly in an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the embodiments of the present invention will be described in detail with reference to the accompanying drawings.
In order to realize the maintenance-free lithium ion battery pack stored for 5 years on the rail, reduce the total weight of equipment on the bomb and relieve the pressure of a carrier, as shown in figure 1, the invention discloses a maintenance-free lithium ion battery pack for a high specific energy bomb on the rail, which comprises: the battery comprises a shell 1, a heat preservation bottom plate 2, a heat preservation front plate 3, a battery cover 7, a heat preservation top plate 8, heat preservation side plates 9, a battery cell stack assembly 10, a heat preservation rear plate 11 and screws II 12. Wherein, the cell stack assembly 10 is arranged in the shell 1 and is encapsulated by the battery cover 7; the battery cover 7 is in butt joint with the shell 1 and then is fastened through a screw II 12. A heat preservation front plate 3, two heat preservation side plates 9 and a heat preservation rear plate 11 are respectively arranged between the periphery of the battery cell stack assembly 10 and the shell 1. A heat preservation bottom plate 2 is arranged between the bottom of the cell stack assembly 10 and the shell 1. A heat preservation top plate 8 is arranged between the top of the battery core stack assembly 10 and the battery cover 7.
Preferably, the shell 1, the battery cover 7 and the cell stack assembly 10 are tightly assembled by filling heat insulation materials and filling heat conduction silica gel into the gap. Because of having the function of heating, each heated board design is thinner to reduce the space size of whole lithium ion storage battery.
In the present embodiment, the case 1 and the battery cover 7 are processed using a magnesium alloy material to form a battery pack case. The surface of the battery pack shell is firstly subjected to nickel plating treatment for oxidation resistance, and then is subjected to thermal control black paint coating treatment so as to meet the requirement of the emissivity of an on-orbit hemisphere of a spacecraft; the wall thickness of the battery pack case is 2 mm; four mounting support legs 21 are formed at the bottom of the shell 1 in an integrated milling mode, and the structural strength is high.
In this embodiment, as shown in fig. 1, the on-track maintenance-free high specific energy cartridge lithium ion battery pack may further include: screws i 5 and a plurality of connectors 6. Wherein, the upper surface of the battery cover 7 is provided with a plurality of bosses; each connector 6 is mounted on a corresponding boss through a set of four screws I5. Preferably, when the grounding requirement is met, a long screw 4 can be used for replacing one screw I in a group of four screws I5; one end of the long screw 4 passes through the battery cover 7 and then is connected with the grounding terminal, and the grounding terminal is led out through any point on the connector assembly 6 after being welded with a wire.
In this embodiment, as shown in fig. 2, the cell stack assembly 10 may specifically include: the device comprises an insulating side plate I13, an insulating bottom plate 14, a bus bar 15, a plurality of single batteries 16, a plurality of NTC thermistors 17, an insulating top plate 18, an insulating side plate II 19 and a heating belt 20. Wherein, a plurality of single batteries 16 are bonded and closely stacked by silicon rubber to form an electric core stack; a heating tape 20 is integrally adhered to the monomer positive and negative side confluence sheet 15 on the electric core stack; the outer side of the heating belt 20 is pasted with an insulation side plate I13 by adopting silicon rubber; a plurality of NTC thermistors 17 are arranged outside the cell stack and used for temperature collection; the left side and the right side of the cell stack are respectively pasted with an insulating side plate II 19 by adopting silicon rubber, the bottom of the cell stack is pasted with an insulating bottom plate 14 by adopting silicon rubber, and the top of the cell stack is pasted with an insulating top plate 18 by adopting silicon rubber.
Preferably, the single batteries 16 are energy type cylindrical single batteries, 1.1-1.3 circles of insulating tapes are firstly coated on the periphery of each single battery 16, then the insulating tapes are orderly arranged according to the principle of parallel connection and serial connection, the position of line contact of each two single batteries 16 is coated with silicon rubber to realize integral curing of a battery cell stack, and serial and parallel connection is realized by adopting a bus plate 15 spot welding after curing; after spot welding, the heating tapes 20 are directly adhered to the confluence pieces 15 at both sides.
Preferably, the heating tape 20 is a polyimide film heating tape, which is thin and light, and reduces the space ratio.
Preferably, the insulating top plate 18 is partially hollow, the NTC thermistors 17 are respectively placed at the hollow parts, and the NTC thermistors 17 are tightly attached to the single battery 16 and are fixed by bonding silicon rubber so as to detect the internal temperature of the lithium ion storage battery.
Preferably, the lithium ion storage battery pack collects the NTC thermistor 17 through an external circuit and controls the heating on-off, so that the lithium ion storage battery pack is always in the working environment with the optimal electrical property; by ensuring the screening and matching control of the single batteries 16, the on-rail semi-electric operation and the best electric performance test environment, the lithium ion storage battery pack does not need to carry out electric performance maintenance and equalizing charge in 5 years on the rail, and the size and the weight of the on-board charging equipment assembly are saved.
In the embodiment, the lithium ion storage battery pack initially runs at 50% -70% of SOC during the rail storage running period, the lithium ion storage battery pack discharges at least once through the on-board load test every half year, the half year accumulated power consumption does not exceed 30%, the lithium ion storage battery pack charges on the rail every half year, and the lithium ion storage battery pack charges to 50% -70% of SOC at the current of not higher than 0.1C.
In summary, the lithium ion battery pack for the on-rail maintenance-free high specific energy bomb can be stored on the rail for 5 years without maintenance: firstly, in the production process, the single batteries are strictly screened, matched and placed into a shell, so that the consistency level of the single batteries is ensured; secondly, initially operating at 50% -70% SOC during rail storage, passing the on-board load irregular discharge test of the lithium ion storage battery pack every half year, wherein the discharge depth does not exceed 30%, and charging on the rail once every half year to 50% -70% SOC; and finally, in order to ensure that the lithium ion storage battery pack is at the optimal environmental temperature during on-track charging and discharging, the heating on-off is controlled by collecting the temperature of the lithium ion storage battery pack through an external circuit, so that the lithium ion storage battery pack is always in the optimal electrical performance test environment.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention, and those skilled in the art can make variations and modifications of the present invention without departing from the spirit and scope of the present invention by using the methods and technical contents disclosed above.
Those skilled in the art will appreciate that the invention may be practiced without these specific details.
Claims (10)
1. An on-track maintenance-free high specific energy cartridge lithium ion battery pack, comprising: the battery comprises a shell (1), a heat-preservation bottom plate (2), a heat-preservation front plate (3), a battery cover (7), a heat-preservation top plate (8), heat-preservation side plates (9), a battery cell stack assembly (10), a heat-preservation rear plate (11) and a screw II (12);
the battery cell stack assembly (10) is arranged in the shell (1) and is packaged by a battery cover (7); the battery cover (7) is in butt joint with the shell (1) and then is fastened through a screw II (12);
a heat-preservation front plate (3), two heat-preservation side plates (9) and a heat-preservation rear plate (11) are respectively arranged between the periphery of the battery cell stack assembly (10) and the shell (1);
a heat preservation bottom plate (2) is arranged between the bottom of the battery cell stack assembly (10) and the shell (1);
a heat preservation top plate (8) is arranged between the top of the battery core stack component (10) and the battery cover (7).
2. The lithium ion battery pack for the on-track maintenance-free high specific energy bomb according to claim 1, characterized in that the casing (1) and the battery cover (7) are made of magnesium alloy material to form the battery pack case; the surface of the battery pack shell is firstly subjected to nickel plating treatment for oxidation resistance, and then is subjected to thermal control black paint coating treatment so as to meet the requirement of the emissivity of an on-orbit hemisphere of a spacecraft; the wall thickness of the battery pack case is 2 mm; the bottom of the shell (1) is integrally milled to form four mounting support legs (21).
3. The on-track maintenance-free high specific energy cartridge lithium ion battery pack of claim 1, further comprising: a screw I (5) and a plurality of connectors (6); wherein, the upper surface of the battery cover (7) is provided with a plurality of bosses; each connector (6) is arranged on the corresponding boss through a group of four screws I (5).
4. The on-track maintenance-free high specific energy cartridge lithium ion battery pack according to claim 3, characterized in that when there is a ground requirement, one of the screws I (5) in a group of four screws I (5) is replaced with a long screw (4); one end of the long screw (4) penetrates through the battery cover (7) and then is connected with the grounding terminal, and the grounding terminal is led out through any point on the connector (6) after being welded with a wire.
5. The on-track maintenance-free high specific energy storage battery pack for lithium ion batteries according to claim 1, wherein the cell stack assembly (10) comprises: the device comprises an insulation side plate I (13), an insulation bottom plate (14), a bus sheet (15), a plurality of single batteries (16), a plurality of NTC thermistors (17), an insulation top plate (18), an insulation side plate II (19) and a heating belt (20);
a plurality of single batteries (16) are bonded and densely stacked by adopting silicon rubber to form an electric core stack;
a heating tape (20) is integrally adhered to the monomer positive and negative side confluence sheets (15) on the electric core stack; the outer side of the heating belt (20) is adhered with an insulating side plate I (13) by adopting silicon rubber;
a plurality of NTC thermistors (17) are arranged outside the cell stack and used for temperature collection;
the left side and the right side of the cell stack are respectively pasted with an insulating side plate II (19) by adopting silicon rubber, the bottom of the cell stack is pasted with an insulating bottom plate (14) by adopting silicon rubber, and the top of the cell stack is pasted with an insulating top plate (18) by adopting silicon rubber.
6. The on-track maintenance-free lithium ion battery pack for the high-specific-energy bomb according to claim 5, wherein the single batteries (16) are energy type cylindrical single batteries, 1.1-1.3 circles of insulating tapes are firstly coated on the periphery of each single battery (16), then the single batteries are orderly arranged according to a first parallel and second series principle, the linear contact positions of every two single batteries (16) are coated with silicon rubber to realize the integral curing of the battery cell stack, and the series and parallel connection is realized by spot welding of a confluence sheet (15) after the curing; after spot welding, directly sticking a heating tape (20) on the confluence sheets (15) at the two sides; wherein, the heating belt (20) is a polyimide film heating belt which is thin and light and reduces the space ratio.
7. The on-track maintenance-free high specific energy bomb lithium ion battery pack as claimed in claim 5, wherein the insulation top plate (18) is partially hollowed, and NTC thermistors (17) are respectively placed in the hollows, and the NTC thermistors (17) are tightly attached to the single batteries (16) and fixed by silicon rubber to detect the internal temperature of the lithium ion battery pack.
8. The on-track maintenance-free high-specific energy bomb lithium ion battery pack according to claim 1, wherein the shell (1) and the battery cover (7) are filled with the cell stack assembly (10) through thermal insulation materials, and the heat conducting silica gel is filled into the gap to realize tight assembly.
9. The on-rail maintenance-free high specific energy storage battery pack for use in a bomb according to claim 1, wherein the lithium ion battery pack initially operates at 50% to 70% SOC during rail storage operation, the lithium ion battery pack discharges at least once per half year through a bomb-borne load test, the half year cumulative power usage does not exceed 30%, and the on-rail battery pack charges once per half year to 50% to 70% SOC at a current of not more than 0.1C.
10. The lithium ion battery pack for the on-track maintenance-free high specific energy bomb according to claim 5, wherein the lithium ion battery pack collects the NTC thermistor (17) through an external circuit and controls the heating on-off, so that the lithium ion battery pack is always in the working environment with the best electrical performance; by the screening and matching control of the single batteries (16), the on-rail semi-electric operation and the guarantee of the optimal electric performance test environment, the lithium ion storage battery pack does not need to perform electric performance maintenance and equalizing charge in 5 years on the rail, and the size and the weight of the on-board charging equipment assembly are saved.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110220763.7A CN113013538A (en) | 2021-02-26 | 2021-02-26 | On-orbit maintenance-free lithium ion storage battery pack for high-specific energy bomb |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110220763.7A CN113013538A (en) | 2021-02-26 | 2021-02-26 | On-orbit maintenance-free lithium ion storage battery pack for high-specific energy bomb |
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| CN110534672A (en) * | 2019-07-29 | 2019-12-03 | 上海空间电源研究所 | It is a kind of can carry low temperature self-heating high power lithium ion cell group |
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Application publication date: 20210622 |