CN114374037A - Modular storage battery pack for microsatellite - Google Patents
Modular storage battery pack for microsatellite Download PDFInfo
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- CN114374037A CN114374037A CN202111534474.0A CN202111534474A CN114374037A CN 114374037 A CN114374037 A CN 114374037A CN 202111534474 A CN202111534474 A CN 202111534474A CN 114374037 A CN114374037 A CN 114374037A
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- 108091092878 Microsatellite Proteins 0.000 title claims abstract description 28
- 238000003860 storage Methods 0.000 title abstract description 22
- 238000010438 heat treatment Methods 0.000 claims abstract description 31
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 21
- 229910052744 lithium Inorganic materials 0.000 claims description 21
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 7
- 239000000741 silica gel Substances 0.000 claims description 7
- 229910002027 silica gel Inorganic materials 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 6
- 239000003292 glue Substances 0.000 claims description 5
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 229920002379 silicone rubber Polymers 0.000 claims description 4
- 238000002788 crimping Methods 0.000 claims description 3
- 238000011161 development Methods 0.000 abstract description 12
- 238000009413 insulation Methods 0.000 abstract description 9
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000012827 research and development Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000004026 adhesive bonding Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- WYVBETQIUHPLFO-UHFFFAOYSA-N 1,2-dichloro-4-(2,6-dichlorophenyl)benzene Chemical compound C1=C(Cl)C(Cl)=CC=C1C1=C(Cl)C=CC=C1Cl WYVBETQIUHPLFO-UHFFFAOYSA-N 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
- H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
- H01M50/213—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for cells having curved cross-section, e.g. round or elliptic
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/258—Modular batteries; Casings provided with means for assembling
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/267—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders having means for adapting to batteries or cells of different types or different sizes
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/284—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with incorporated circuit boards, e.g. printed circuit boards [PCB]
-
- 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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention provides a modularized storage battery pack for a microsatellite, which comprises a battery cell assembly, an upper insulation sheet, a lower insulation sheet, a heating sheet, a top plate, a bottom plate, a left side plate, a right side plate, a front side plate, a rear side plate and a PCB assembly, wherein the top plate, the bottom plate, the left side plate, the right side plate, the front side plate and the rear side plate enclose and form a square container, the battery cell assembly is installed in the square container, the top plate, the heating sheet and the upper insulation sheet are arranged in a stacked mode from top to bottom, the lower insulation sheet and the bottom plate are arranged in a stacked mode from top to bottom, the PCB assembly is fixed on the front side plate, and the PCB assembly is located in the square container. The invention has the beneficial effects that: through modular design, the storage battery pack products of various specifications can be obtained, the development cost is reduced, the development period is shortened, and the diversity requirements of different satellites can be met.
Description
Technical Field
The invention relates to a storage battery pack, in particular to a modular storage battery pack for a microsatellite.
Background
The progress of microelectronic technology, the development of light materials and the development of high-power solar cells create good conditions for the miniaturization, integration and generalization of commercial microsatellites, so that the modern microsatellites have the advantages of light weight, small volume, low cost, high functional density and the like, and the microsatellites are more and more widely applied. Different from a research and development mode that a military satellite does not count the cost, the research and development of a commercial satellite is dominated by the market and the benefit maximization is pursued, so that the research and development cost of the satellite is a key factor for restricting the commercialization of the microsatellite, and the research and development cost of the storage battery is a key component on the satellite and directly influences the cost of the whole satellite. The traditional development process is to customize the storage battery according to the energy requirement of the whole satellite, and has high research and development cost and long development period. With the expansion of the application field of the microsatellite and the increase of model series, it is impractical to customize a storage battery specially for each model of satellite, so that the design of the satellite storage battery is necessary to be modularized and standardized to form series storage battery products with different specifications, the use requirements of different satellites are met, and the design method has important significance for further reducing the development cost of the microsatellite, shortening the satellite development period and improving the satellite reliability.
Disclosure of Invention
To solve the problems in the prior art, the present invention provides a modular battery pack for a microsatellite.
The invention provides a modularized storage battery pack for a microsatellite, which comprises a battery cell assembly, an upper insulation sheet, a lower insulation sheet, a heating sheet, a top plate, a bottom plate, a left side plate, a right side plate, a front side plate, a rear side plate and a PCB assembly, wherein the top plate, the bottom plate, the left side plate, the right side plate, the front side plate and the rear side plate enclose and form a square container, the battery cell assembly is installed in the square container, the top plate, the heating sheet and the upper insulation sheet are arranged in a stacked mode from top to bottom, the lower insulation sheet and the bottom plate are arranged in a stacked mode from top to bottom, the PCB assembly is fixed on the front side plate, and the PCB assembly is located in the square container.
As a further improvement of the invention, the battery cell assembly comprises battery cell modules, current-carrying sheets and connecting wires, wherein at least two battery cell modules are longitudinally spliced and connected in parallel through the current-carrying sheets to form a single battery cell module, and at least two single battery cell modules are transversely spliced and connected in series through the connecting wires to form a battery cell main body.
As a further improvement of the present invention, the battery cell module includes a battery support having a glue injection groove and a lithium battery, the lithium battery is mounted in the battery support in a posture that the positive electrode is vertically upward, and the lithium battery is fixedly connected with the battery support by injecting silicon rubber into the glue injection groove of the battery support.
As a further improvement of the invention, a support column is arranged on the battery support, and the battery support is respectively connected with the top plate and the bottom plate through the support column.
As a further improvement of the invention, the electric core assembly further comprises an end surface mosaic block and a rectangular nut, wherein the end surface mosaic block is embedded on the battery supports of the upper layer and the lower layer through dovetail grooves and is fixedly connected with the battery supports of the upper layer and the lower layer through screws and the rectangular nut.
As a further improvement of the invention, the connecting wire is formed by crimping two annular terminals and a lead, two through holes are formed in one end of the current-carrying sheet, and screws sequentially penetrate through the through holes of the annular terminals and the current-carrying sheet to fix the connecting wire and the current-carrying sheet on the end surface mosaic block, so that series connection/parallel connection of two adjacent battery cell modules is realized.
As a further improvement of the invention, the PCB assembly comprises a PCB, a PCB support, a silica gel sealing block and a plug, the PCB support is embedded on the battery support through a dovetail groove and is fixed through gluing, the PCB is installed on the PCB support, the plug is installed on the PCB, and the silica gel sealing block is wrapped on two sides of the plug in a bonding mode.
As a further improvement of the invention, the battery bracket is provided with a dovetail boss and a dovetail groove which are used for transverse and longitudinal splicing of similar battery brackets.
As a further improvement of the invention, the insulating sheet is provided with a groove matched with the heating sheet, the heating sheet is provided with a back adhesive, the heating sheet is adhered in the groove of the insulating sheet through the back adhesive, and the heating sheet is provided with a main heating loop and a backup heating loop.
The invention has the beneficial effects that: through the scheme, the storage battery pack products of various specifications can be obtained through modular design, the development cost is reduced, the development period is shortened, and the diversity requirements of different satellites can be met.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other solutions can be obtained according to the drawings without inventive efforts.
Fig. 1 is an exploded view of a modular battery pack for a microsatellite according to the present invention.
Fig. 2 is a schematic diagram of a cell assembly of a modular battery pack for a microsatellite according to the present invention.
Fig. 3 is a schematic diagram of a 4 x 1 cell module of a modular battery pack for a microsatellite according to the present invention.
Fig. 4 is a schematic diagram of a different model family of modular battery packs for a microsatellite according to the present invention.
Fig. 5 is a schematic diagram of a PCB assembly of a modular battery pack for a microsatellite according to the present invention.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be taken as limiting the scope of the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The invention is further described with reference to the following description and embodiments in conjunction with the accompanying drawings.
The invention relates to various model series products, such as SCB-0804, SCB-0808, SCB-0812, SCB-1604, SCB-1608, SCB-1612, SCB-2804, SCB-2808, SCB-2812 and the like, wherein the SCB is a product main name code, the first two Arabic numerals represent the total voltage (unit V) of a storage battery, and the last two Arabic numerals represent the parallel series. The structure of the modular battery of the present invention will be described by taking the battery model number of SCB-1608 as an example, but the present invention is not limited to the series-parallel connection manner and the number of the single batteries.
As shown in fig. 1 to 5, a modular battery pack for a microsatellite mainly includes: roof 1, heating plate 2, go up insulating piece 3, lower insulating piece 11, electric core subassembly 4, posterior lateral plate 5, left side board 10, right side board 6, PCB subassembly 7, preceding curb plate 8, bottom plate 9, battery support 41, temperature sensor 42, support column 43, lithium cell 44, rectangle nut 45, terminal surface mosaic piece 46, connecting wire 47, current-carrying piece 48, screw 49, PCB board 71, PCB support 72, silica gel seal piece 73 and plug 74.
The electric core assembly 4 is composed of a battery bracket 41, a temperature sensor 42, a support column 43, a lithium battery 44, a rectangular nut 45, an end surface mosaic block 46, a connecting wire 47 and a current-carrying sheet 48, as shown in fig. 2.
In this embodiment, the minimum unit module capable of being spliced is preferably a 4 × 1 electrical core module, as shown in fig. 3, which is composed of a battery support 41, a support column 43, and 4 lithium batteries 44, and by vertically splicing the 4 × 1 electrical core module, a larger electrical core module such as an 8 × 1 electrical core module, a 12 × 1 electrical core module, etc. can be obtained, current-carrying sheets 48 of corresponding specifications are spot-welded on the electrical core module to connect each battery in parallel, so as to obtain a large-capacity single battery module, then the large-capacity single battery modules are transversely spliced and connected in series by a connection line 47, so as to finally obtain series electrical core assemblies of different voltages and different capacities, and then the electrical core assemblies 4 are assembled with a heating sheet 2, an insulation sheet 3, a PCB assembly 7, a top plate 1, a bottom plate 9, a left side plate 10, a right side plate 6, a front side plate 8, and a rear side plate 5, so as to obtain a series of storage batteries of various models, as shown in fig. 4.
The storage battery pack comprises a plurality of lithium batteries 44, all the lithium batteries 44 are installed in the battery bracket 41 in a posture that the positive electrode is vertically upward, and the lithium batteries 44 are fixedly connected with the battery bracket 41 by injecting silicon rubber into the rubber injection groove. The silicon rubber has certain elasticity after being cured, and can play a good role in buffering and vibration isolation for the lithium battery 44.
The specification of the current-carrying sheet 48 is designed according to the number of parallel stages, and the current-carrying sheet is spot-welded on the electrodes of the lithium batteries 44, so that the parallel connection of the plurality of lithium batteries 44 is realized.
The end surface mosaic blocks 46 are mosaic on the battery supports 41 of the upper and lower layers through dovetail grooves and fixed with the battery supports 41 of the upper and lower layers through screws and rectangular nuts 45.
The connecting wire 47 is formed by crimping two annular terminals and a wire, two through holes are formed in one end of the current-carrying sheet 48, the connecting wire 47 and the current-carrying sheet 48 are fixed on the end face mosaic block through the through holes of the annular terminals and the current-carrying sheet 48 sequentially by screws, and series connection/parallel connection of two adjacent battery modules is achieved. By changing the connection point of the connection line 47, the voltage boosting and reducing (voltage doubling and capacity halving) or the voltage expanding and reducing (capacity doubling and voltage halving) of the battery pack can be easily realized without redesigning the current-carrying chip 48.
The heating plate 2 is provided with the back adhesive, the size, the heating power and the loop resistance value of the heating plate are respectively designed according to different battery specifications, and the heating plate 2 is adhered in the groove of the insulating plate 3, so that the heating plate is not extruded. The heating sheet 2 is provided with a main backup heating loop, when one heating loop is in fault, the other heating loop is started to work, and the reliability of temperature control of the storage battery pack is ensured.
The PCB assembly 7 is designed according to different battery specifications, the PCB assembly 7 is composed of a PCB 71, a PCB support 72, a silica gel sealing block 73 and a plug 74, wherein the PCB support is embedded in the upper battery support and the lower battery support through dovetail grooves and fixed through gluing, the PCB is installed on the PCB support, the silica gel sealing block 73 is adhered to two sides of the plug 74, and short circuit caused by pins of surplus materials entering the plug 74 can be prevented.
Go up insulating piece 3, lower insulating piece 11 and design respectively according to different battery specifications, go up insulating piece 3 and install between battery holder and roof 1, insulating piece 11 is installed between battery holder and bottom plate 9 down for roof 1, bottom plate 9 are insulating with lithium cell 44.
The battery bracket 41 is provided with a dovetail boss 411 and a dovetail groove 412, and the battery bracket 41 can be spliced transversely and longitudinally.
The modular storage battery pack for the microsatellite, provided by the invention, has the following advantages:
1. the invention adopts the modular design, designs the 4 multiplied by 1 electric core module as the minimum module unit which can be spliced, and can obtain the storage battery products of various specifications series through module combination, thereby reducing the development cost, shortening the development period and meeting the diversity requirements of different satellites.
2. The traditional mode adopts current-carrying sheets to realize series/parallel connection of batteries, one battery at least needs to design current-carrying sheets with two specifications, and the invention adopts a connecting wire to realize series/parallel connection of adjacent battery modules, only needs to design the current-carrying sheets with one specification, and reduces the cost; in addition, the voltage boosting and the capacity reducing (doubling the voltage and halving the capacity) or the capacity expanding and the voltage reducing (doubling the capacity and halving the voltage) of the battery pack can be easily realized by changing the connection point of the connecting wire without redesigning a current-carrying sheet.
3. The invention designs the film heating sheet of the main backup heating loop and installs the temperature measuring element to sense the surface temperature of the storage battery in real time, so that the storage battery can always keep the temperature in a safe range in a severe space environment.
4. The battery bracket of each 4 multiplied by 1 battery cell module is connected with the top plate and the bottom plate through the supporting columns, so that the structural rigidity and the strength of the storage battery pack are greatly enhanced.
5. All lithium batteries are arranged and mounted in a posture that the positive electrodes are vertically upward, and compared with the mode that the positive electrodes and the negative electrodes of a traditional lithium battery pack are arranged in a staggered mode, the lithium battery pack can reduce the risk of leakage of the lithium batteries.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (9)
1. A modular battery pack for a microsatellite, comprising: including the core subassembly, go up the insulating piece, heating plate, roof, bottom plate, left side board, right side board, preceding curb plate, posterior lateral plate and PCB subassembly down, wherein, roof, bottom plate, left side board, right side board, preceding curb plate, posterior lateral plate enclose to close and have formed a square container, the core subassembly is installed in the square container, roof, heating plate, last insulating piece are from last to range upon range of setting down, insulating piece, bottom plate are from last to range upon range of setting down, the PCB subassembly is fixed on the preceding curb plate, the PCB subassembly is located in the square container.
2. The modular battery pack for microsatellites according to claim 1, wherein: the electric core assembly comprises electric core modules, current-carrying sheets and connecting wires, wherein at least two electric core modules are longitudinally spliced and are connected in parallel through the current-carrying sheets to form a single battery module, and at least two single battery modules are transversely connected and are connected in series through the connecting wires to form an electric core main body.
3. The modular battery pack for microsatellites according to claim 2, wherein: the battery cell module comprises a battery support and lithium batteries, wherein the battery support is provided with a glue injection groove, the lithium batteries are arranged in the battery support in a manner that the anodes of the lithium batteries are vertically upward, and the lithium batteries are fixedly connected with the battery support by injecting silicon rubber into the glue injection groove of the battery support.
4. The modular battery pack for microsatellites according to claim 3, wherein: the battery support is provided with a support column, and the battery support is respectively connected with the top plate and the bottom plate through the support column.
5. The modular battery pack for microsatellites according to claim 3, wherein: the battery pack further comprises an end face mosaic block and a rectangular nut, wherein the end face mosaic block is embedded on the battery supports of the upper layer and the lower layer through dovetail grooves and is fixedly connected with the battery supports of the upper layer and the lower layer through screws and the rectangular nut.
6. The modular battery pack for microsatellites according to claim 5, wherein: the connecting wire is formed by two ring terminals and wire crimping, two through-holes have been seted up to current-carrying piece one end, pass the through-hole of ring terminal, current-carrying piece in proper order by the screw and fix connecting wire, current-carrying piece on the terminal surface mosaic piece, realize the series connection/parallelly connected of two adjacent electric core modules.
7. The modular battery pack for microsatellites according to claim 3, wherein: the PCB subassembly includes PCB board, PCB support, silica gel sealing piece and plug, the PCB support is inlayed through the dovetail and is in it is fixed to paste through the glue on the battery support, the PCB board is installed on the PCB support, the plug is installed on the PCB board, the silica gel sealing piece bonds the parcel and is in the plug both sides.
8. The modular battery pack for microsatellites according to claim 3, wherein: the battery bracket is provided with a dovetail boss and a dovetail groove and is used for transverse and longitudinal splicing of similar battery brackets.
9. The modular battery pack for microsatellites according to claim 1, wherein: be equipped with on the insulating piece with heating plate matched with recess, the heating plate is provided with the gum, the heating plate is pasted through the gum in the recess of insulating piece, the heating plate has main heating circuit and backup heating circuit.
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CN202111534474.0A CN114374037A (en) | 2021-12-15 | 2021-12-15 | Modular storage battery pack for microsatellite |
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KR20190065985A (en) * | 2019-05-03 | 2019-06-12 | 안동대학교 산학협력단 | Secondary battery assembly |
US20210111385A1 (en) * | 2019-10-11 | 2021-04-15 | Robert Bosch Gmbh | Battery module |
WO2021218159A1 (en) * | 2020-04-27 | 2021-11-04 | 浙江吉利控股集团有限公司 | Battery module and battery pack |
CN211743261U (en) * | 2020-05-21 | 2020-10-23 | 华速(天津)科技有限公司 | Battery module with support |
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