CN113991226A - Combined energy storage monomer, energy storage cluster and energy storage device - Google Patents
Combined energy storage monomer, energy storage cluster and energy storage device Download PDFInfo
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- CN113991226A CN113991226A CN202111399762.XA CN202111399762A CN113991226A CN 113991226 A CN113991226 A CN 113991226A CN 202111399762 A CN202111399762 A CN 202111399762A CN 113991226 A CN113991226 A CN 113991226A
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- 238000004146 energy storage Methods 0.000 title claims abstract description 163
- 239000000178 monomer Substances 0.000 title claims abstract description 68
- 238000002347 injection Methods 0.000 claims description 34
- 239000007924 injection Substances 0.000 claims description 34
- 210000000352 storage cell Anatomy 0.000 claims description 22
- 230000002265 prevention Effects 0.000 claims description 15
- 210000004027 cell Anatomy 0.000 claims description 12
- 230000003014 reinforcing effect Effects 0.000 claims description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- 239000011261 inert gas Substances 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 230000036760 body temperature Effects 0.000 claims description 2
- 238000009413 insulation Methods 0.000 claims 1
- 239000011257 shell material Substances 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000002826 coolant Substances 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 238000003682 fluorination reaction Methods 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012983 electrochemical energy storage Methods 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 239000002001 electrolyte material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 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
- 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
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
-
- 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
- H01M10/613—Cooling or keeping cold
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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
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/627—Stationary installations, e.g. power plant buffering or backup power supplies
-
- 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
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6554—Rods or plates
- H01M10/6555—Rods or plates arranged between the cells
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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
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
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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
- H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
-
- 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
- H01M50/251—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for stationary devices, e.g. power plant buffering or backup power supplies
-
- 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
- H01M50/30—Arrangements for facilitating escape of gases
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2200/00—Safety devices for primary or secondary batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/10—Batteries in stationary systems, e.g. emergency power source in plant
-
- 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)
- Engineering & Computer Science (AREA)
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- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a combined energy storage monomer, which comprises a monomer shell, wherein a plurality of battery tanks are arranged in the monomer shell, and all the battery tanks are divided into at least one group; the battery jar is internally provided with at least one energy storage battery, the energy storage batteries which belong to the same group and are arranged in the battery jar are connected in series or in parallel, and the monomer shell is correspondingly provided with monomer tabs corresponding to each group of battery jar. The invention also discloses an energy storage cluster which comprises a cluster support, wherein a plurality of combined energy storage monomers are arranged on the cluster support. The invention also discloses an energy storage device which comprises a box body, wherein a plurality of energy storage clusters are arranged in the box body. According to the combined energy storage monomer, the energy storage cluster and the energy storage device, the plurality of energy storage batteries with smaller sizes are combined into the energy storage monomer with larger size, so that the capacity requirement can be met, and the combined energy storage cluster and the energy storage device have the advantages of convenience in disassembly, assembly, control and maintenance.
Description
Technical Field
The invention belongs to the technical field of electrochemical energy storage, and particularly relates to a combined energy storage monomer, an energy storage cluster and an energy storage device.
Background
Batteries are mainly classified into power batteries and energy storage batteries. The power battery is used as a mobile power supply, and has the highest requirement on volume (and mass) energy density on the premise of safety so as to achieve more durable cruising ability. Meanwhile, users also want the safe and fast charging of electric automobiles, so that the power type battery has higher requirements on energy density and power density.
The energy storage type battery has no direct requirement on energy density, and as for power density, different energy storage scenes have different requirements. For power peak regulation, off-grid photovoltaic energy storage or peak-valley price difference energy storage scenes of a user side, the energy storage type battery is generally required to be continuously charged or discharged for more than two hours, so that the capacity type battery with the charging and discharging multiplying power less than or equal to 0.5C is suitable for being adopted; for the energy storage scene of power frequency modulation or smooth renewable energy fluctuation, the energy storage type needs to be charged and discharged rapidly in the time period from second level to minute level, so that the method is suitable for the application of a power type battery with the power of more than or equal to 2C.
Energy memory can produce a large amount of heats in the use, in order to guarantee energy memory's normal use, need cool down energy memory. In the related art, most energy storage devices in the market adopt an air-cooling heat dissipation structure, and a fan is mainly combined with an open air duct structure, so that the convection exchange of internal air and external air achieves the function of reducing the temperature of devices in a cabinet. Although the air-cooled heat dissipation structure can play a role in cooling to a certain extent, the cooling efficiency is lower. The cooling efficiency of the air-cooled heat dissipation structure is further reduced when the energy storage device is placed in the closed space, and the operation safety of the energy storage device cannot be guaranteed.
In order to store enough electric energy meeting the requirements of the use scene, a corresponding number of energy storage batteries need to be installed in the energy storage device. Because the size of the existing energy storage battery is small, the electric quantity required by the energy storage device is large, namely the box body of the energy storage device is large in size, the quantity of the energy storage batteries required to be installed is very large, and great difficulty exists in the dismounting, the control and the maintenance of the energy storage batteries.
Disclosure of Invention
In view of this, the present invention provides a combined energy storage cell, an energy storage cluster and an energy storage device, in which a plurality of energy storage cells with smaller sizes are combined into an energy storage cell with larger size, so that the capacity requirement can be met, and the combined energy storage cell, the energy storage cluster and the energy storage device have the advantages of convenient assembly, disassembly, control and maintenance.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention firstly provides a combined energy storage monomer, which comprises a monomer shell, wherein a plurality of battery grooves are arranged in the monomer shell, and all the battery grooves are divided into at least one group;
the battery jar is internally provided with at least one energy storage battery, the energy storage batteries which belong to the same group and are arranged in the battery jar are connected in series or in parallel, and the monomer shell is correspondingly provided with monomer tabs corresponding to each group of battery jar.
Furthermore, a first side plate and a second side plate are arranged in the single body shell, the first side plate and the second side plate are perpendicular to each other, and the first side plate and the second side plate divide the single body shell into a plurality of battery grooves.
Furthermore, a side plate temperature control flow channel for circulation of a temperature control medium is arranged in the first side plate.
Furthermore, a plurality of energy storage batteries are stacked in each battery jar.
Furthermore, in the battery jar, be equipped with insulating heat conduction diaphragm between two adjacent energy storage battery.
Further, a thermistor is arranged on the insulating heat-conducting diaphragm.
Furthermore, one end, close to the first side plate, of the insulating heat conduction diaphragm is attached to the first side plate.
Furthermore, a connecting block is arranged in the second side plate, and battery tabs of the energy storage batteries located on two sides of the second side plate are connected with the corresponding connecting block.
Further, the energy storage battery adopts a soft package battery.
Furthermore, two side faces, which are perpendicular to the first side plate and the second side plate, in the single shell are single surfaces, and in the two single surfaces, at least one single surface is provided with a surface temperature control system.
Further, the surface temperature control system comprises a surface temperature control flow channel for circulation of a temperature control medium.
Further, the single body housing includes two first single body sides parallel to the first sides and two second single body sides parallel to the second sides; and the side surface of the first monomer and/or the side surface of the second monomer are/is provided with exhaust valves for exhausting after the air pressure in the monomer shell exceeds a set value.
Further, a vent hole used for communicating the battery jar with the exhaust valve is arranged on the first side face and/or the second side face.
Further, a negative pressure pipe is connected to the exhaust valve.
Further, the exhaust valve is arranged on one of the side surfaces of the first monomer and/or the second monomer, a thermal runaway prevention medium injection pipe is arranged on the other one of the side surfaces of the first monomer and/or the second monomer, and a thermal runaway prevention medium injection valve is arranged on the thermal runaway prevention medium injection pipe.
Furthermore, reinforcing ribs for reinforcing the structural strength are arranged on the single shell.
The invention also provides an energy storage cluster which comprises a cluster support, wherein a plurality of combined energy storage monomers are arranged on the cluster support.
Further, a first side plate and a second side plate are arranged in the monomer shell, and the first side plate and the second side plate are perpendicular to each other; two side faces, perpendicular to the first side plate and the second side plate, of the single shell are made to be single surfaces, in the two single surfaces, at least one of the single surfaces is provided with a surface temperature control system, the surface temperature control system comprises a surface temperature control flow channel for circulation of a temperature control medium, two ends of the surface temperature control flow channel are respectively provided with a first medium inlet and a second medium inlet, the cluster support is provided with a first medium injection pipeline for introducing the temperature control medium and a first medium backflow pipeline for backflow of the temperature control medium, the first medium inlet is connected with the first medium injection pipeline, and the first medium outlet is connected with the first medium backflow pipeline.
Further, a first medium flow control valve for controlling the medium flow is arranged at the first medium inlet.
Further, the first medium injection pipeline and the first medium return pipeline are fixedly arranged on the cluster support; or the cluster support comprises a column, and the first medium injection pipe and the first medium return pipe are arranged in the column.
Furthermore, energy storage monomers are arranged on the cluster support at intervals, and temperature control monomers are arranged between the adjacent energy storage monomers.
Furthermore, a single temperature control channel for circulating a temperature control medium is arranged in the temperature control single body, and a second medium inlet and a second medium outlet are respectively arranged at two ends of the single temperature control channel; the cluster support is provided with a second medium injection pipeline for introducing a temperature control medium and a second medium backflow pipeline for backflow of the temperature control medium, the second medium inlet is connected with the second medium injection pipeline, and the second medium outlet is connected with the second medium backflow pipeline.
Further, a second medium flow control valve for controlling the medium flow is arranged at the second medium inlet.
Furthermore, a temperature control plate is also arranged on the cluster support.
Furthermore, a plate temperature control channel for circulating a temperature control medium is arranged on the temperature control plate.
Furthermore, a sealed shell is arranged on the cluster support, and nitrogen or inert gas is filled in the sealed shell.
The invention also provides an energy storage device which comprises a box body, wherein a plurality of energy storage clusters are arranged in the box body.
Further, the energy storage clusters are arranged in the box body at intervals, a temperature control device is arranged between every two adjacent energy storage clusters, and the energy storage clusters are in contact fit with the adjacent temperature control devices.
Furthermore, a device temperature control channel for circulating a temperature control medium is arranged in the temperature control device.
Furthermore, a box body temperature control device is arranged on the side wall and/or the bottom surface of the box body.
The invention has the beneficial effects that:
the combined energy storage monomer is characterized in that a plurality of battery tanks are arranged in a monomer shell, energy storage batteries are arranged in the battery tanks, and the energy storage batteries of the same battery tank group are connected in series or in parallel, so that the technical purpose of outputting electric energy to the outside is achieved.
The side plate temperature control flow channel is arranged in the first side plate, so that the temperature in each battery jar is controlled, the energy storage battery is kept to operate within a set temperature range, and the operation safety is improved; through set up insulating heat conduction diaphragm between two adjacent energy storage battery to with insulating heat conduction diaphragm laminating on first side, thereby can accelerate the heat exchange between two energy storage battery faying faces and the first side, further control energy storage battery's operating temperature avoids local temperature to surpass and sets for the operating temperature scope.
The exhaust valve is arranged on the single body shell, and the vent holes are arranged on the first side surface and/or the second side surface so that gas among the battery tanks can circulate; through set up the thermal runaway medium injection pipe of preventing on monomer casing, when the extreme condition such as short circuit takes place for energy storage battery, usable thermal runaway medium injection pipe of preventing injects the thermal runaway medium into monomer casing, delays and controls the electrochemical reaction in the energy storage battery, avoids taking place burning and explosion.
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 an energy storage device according to the present invention;
FIG. 2 is a schematic structural diagram of an energy storage cluster according to the present embodiment;
FIG. 3 is a schematic structural diagram of an energy storage cell;
FIG. 4 is a cross-sectional view of the energy storage cell taken along a direction parallel to the second side;
FIG. 5 is detail A of FIG. 4;
FIG. 6 is a cross-sectional view of the energy storage cell taken along a direction parallel to the first side;
FIG. 7 is detail B of FIG. 6;
FIG. 8 is a schematic structural view of a single housing;
FIG. 9 is a schematic view of a pipeline when a surface temperature control system is provided on a single body shell in an energy storage cluster;
FIG. 10 is a schematic view of a pipeline when temperature control units are disposed between energy storage units in an energy storage cluster;
FIG. 11 is a schematic structural view of the single housing with reinforcing ribs;
fig. 12 is detail C of fig. 11.
Description of reference numerals:
10-a box body; 11-a temperature control device;
20-energy storage clusters; 21-cluster scaffold; 22-a first medium injection conduit; 23-a first medium return conduit; 24-temperature control monomer; 25-a monomer temperature control channel; 26-a second media inlet; 27-a second medium outlet; 28-a second medium injection conduit; 29-a second medium return conduit; 30-a second media flow control valve;
40-an energy storage monomer; 41-a single shell; 42-a battery jar; 43-an energy storage battery; 44-a cell tab; 45-a first side panel; 46-a second side panel; 47-side plate temperature control flow channel; 48-an insulating thermally conductive diaphragm; 49-connecting block; 50-a battery tab; 51-monomer surface; 52 surface temperature control flow channel; 53-first medium inlet; 54-a second media inlet; 55-a first media flow control valve; 56-first monomer side; 57-second monomer side; 58-exhaust valve; 59-a vent hole; 60-a negative pressure pipe; 61-thermal runaway prevention medium injection pipe; 62-thermal runaway prevention medium injection valve; 63-reinforcing ribs.
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 an embodiment of an energy storage device according to the present invention. The energy storage device of the embodiment comprises a box body 10, and a plurality of energy storage clusters 20 are installed in the box body 10. The energy storage cluster 20 of the embodiment includes a cluster support 21, and a plurality of combined energy storage units 40 (hereinafter referred to as "energy storage units 40") are mounted on the cluster support 21. The energy storage single body 40 of the embodiment includes a single body case 41, a plurality of battery slots 42 are provided in the single body case 41, and all the battery slots 42 are divided into at least one group. At least one energy storage battery 43 is installed in the battery jar 42, the energy storage batteries 43 installed in the battery jars 42 belonging to the same group are connected in series or in parallel, and a single tab 44 is correspondingly arranged on the single shell 41 and each group of battery jars 42. As shown in fig. 6, the single case 41 of the present embodiment is provided with 8 battery slots 42 in total, and all the battery slots 42 are divided into 4 groups, that is, each group includes two battery slots 42. Of course, the battery cases 42 may be set to 1 group, 2 groups, or the like as needed, and will not be described in detail. Specifically, the energy storage battery 43 of the present embodiment is a pouch battery.
Further, a first side plate 45 and a second side plate 46 are arranged in the single body case 41, the first side plate 45 and the second side plate 46 are perpendicular to each other, and the first side plate 45 and the second side plate 46 divide the plurality of battery slots 42 in the single body case. Preferably, a side plate temperature control flow passage 47 for flowing a temperature control medium is provided in the first side plate 45 of the present embodiment, so as to control the temperature of the battery jar 42 and keep the temperature of the battery jar 42 within a set temperature range.
Further, a plurality of energy storage batteries are stacked in each battery container 42, and 2 energy storage batteries 43 are stacked in each battery container 42 in the present embodiment. In the battery jar 42, be equipped with insulating heat conduction diaphragm 48 between two adjacent energy storage batteries 43, it is preferred, insulating heat conduction diaphragm 48 is close to the one end and the laminating of first curb plate 45 to can accelerate the heat exchange between two energy storage battery faying faces and the first side, further control energy storage battery's operating temperature, avoid local temperature to surpass and set for the operating temperature scope. Preferably, the insulating and heat conducting diaphragm 48 of the present embodiment is provided with a thermistor, and the thermistor is used for measuring the temperature in real time, so as to monitor the temperature of the energy storage battery 43 in real time.
Further, a connecting block 49 is arranged in the second side plate 46, and the battery tabs 50 of the energy storage batteries 43 positioned on both sides of the second side plate 46 are connected with the corresponding connecting block 49, that is, the energy storage batteries 43 are connected in series or in parallel through an internal circuit, so that an external control circuit can be effectively simplified.
Further, two side surfaces of the single body case 41, which are perpendicular to the first side plate 45 and the second side plate 46, are single body surfaces 51, and at least one single body surface 51 of the two single body surfaces 51 is provided with a surface temperature control system. The present embodiment has a surface temperature control system on one of the cell surfaces 51. The surface temperature control system of the present embodiment includes a surface temperature control flow channel 52 for flowing a temperature control medium, so as to control the temperature of the energy storage monomer 40, and keep the energy storage monomer 40 operating within a set temperature range. Specifically, a first medium inlet 53 and a second medium inlet 54 are respectively arranged at two ends of the surface temperature control flow channel, a first medium injection pipeline 22 for introducing a temperature control medium and a first medium return pipeline 23 for returning the temperature control medium are arranged on the cluster support 21, the first medium inlet 53 is connected with the first medium injection pipeline 22, and the first medium outlet 54 is connected with the first medium return pipeline 23. Preferably, a first medium flow control valve 55 for controlling the flow of the medium is provided at the first medium inlet 53. Because the energy storage is interior to contain a plurality of energy storage monomers 40, every energy storage monomer 40 all is equipped with surface temperature control runner 52, then be difficult to guarantee that the flow of cooling medium equals or the flow is in certain error fluctuation range in the surface temperature control runner 52 of every energy storage monomer 40, thereby be difficult to guarantee that every energy storage monomer 40 can all obtain effectual temperature control effect, through setting up first medium flow control valve 55, can adjust the aperture of first medium entry 53 in real time, thereby adjust the flow of the cooling medium in the surface temperature control runner 52 of every energy storage monomer 40, in order to ensure at normal operating process, the flow of the cooling medium in the surface temperature control runner 52 of every energy storage monomer 40 all is in the threshold value within range of settlement. Further, a first medium injection pipe 22 and a first medium return pipe 23 are fixedly installed on the cluster support 21; or cluster support 21 comprises a pillar in which a first medium injection conduit 22 and a first medium return conduit 23 are arranged.
In some embodiments, energy storage units 40 are disposed on the cluster support 21 at intervals, and a temperature control unit 24 is disposed between adjacent energy storage units 40. Specifically, a single temperature control channel 25 for circulating a temperature control medium is arranged in the temperature control single body 24, and a second medium inlet 26 and a second medium outlet 27 are respectively arranged at two ends of the single temperature control channel 25; the cluster support 21 is provided with a second medium injection pipeline 28 for introducing a temperature control medium and a second medium return pipeline 29 for returning the temperature control medium, the second medium inlet 26 is connected with the second medium injection pipeline 28, and the second medium outlet 27 is connected with the second medium return pipeline 29. Of course, a second medium flow control valve 30 for controlling the medium flow may be provided at the second medium inlet 26 for the technical purpose of controlling the flow of the temperature control medium in each temperature control unit 24, and the function thereof is equivalent to that of the first medium flow control valve 55, and will not be described again.
Further, the single body case 41 includes two first single body side surfaces 56 parallel to the first side surface 45 and two second single body side surfaces 57 parallel to the second side surface 46. The first cell side surface 56 or the second cell side surface 57 is provided with an exhaust valve 58 for exhausting air when the air pressure in the cell case 41 exceeds a predetermined value. Of course, the exhaust valves 58 may be provided on both the first cell side surface 56 and the second cell side surface 57. The vent valve 58 of the present embodiment is disposed on the first monomer side 56. The first side surface 45 and/or the second side surface 46 of the present embodiment are provided with vent holes 59 for communicating the battery jar 42 with the vent valves 58, the first single body side surface 56 of the present embodiment is provided with two vent valves 58, and the vent holes 59 of the present embodiment are provided on the first side surface 45. Preferably, a negative pressure pipe 60 is connected to the exhaust valve 58 to accelerate the exhaust of gas by the negative pressure.
Further, the exhaust valve 58 is disposed on one of the first monomer side surface 56 and/or the second monomer side surface 57, the thermal runaway prevention medium injection pipe 61 is disposed on the other one of the first monomer side surface 56 and/or the second monomer side surface 57, and the thermal runaway prevention medium injection valve 62 is disposed on the thermal runaway prevention medium injection pipe 61. The exhaust valve 58 of the present embodiment is provided on one of the first monomer sides 56, and the thermal runaway prevention medium injection pipe 61 is provided on the other first monomer side 56. The thermal runaway prevention medium adopts fluorinated liquid, inert gas, nitrogen, carbon dioxide or R134a, the thermal runaway prevention medium of the embodiment adopts fluorinated liquid, and specifically, the thermal runaway prevention medium can adopt Komu FM-200 or SF-10 fluorinated liquid. The fluorination liquid can not react with electrolyte and electrode active materials, the temperature of the energy storage battery cell can be controlled quickly after the fluorination liquid, and meanwhile, the gas generated after the thermal runaway of the energy storage battery cell can be discharged and simultaneously part of electrolyte can be carried, so that the process of the thermal runaway of the energy storage battery cell is delayed, even the thermal runaway reaction of the energy storage battery cell is eliminated, and the running safety performance is greatly improved.
Further, as shown in fig. 11, in some embodiments, in order to reinforce the structural strength of the single body case 41, a reinforcing rib 63 for reinforcing the structural strength may be further provided on the single body case 41. The reinforcing ribs 63 may be disposed on the single housing 41 in various manners, such as directly welded to the single housing 41, or formed by pressing grooves for reinforcing the structural strength on the single housing 41, which will not be described in detail.
Further, in some embodiments, a temperature control plate may be further disposed on the cluster support 21, and a plate temperature control channel for flowing a temperature control medium is disposed on the temperature control plate, so as to control the temperature.
Further, in some embodiments, a sealed enclosure may be provided on the cluster support 21, and the sealed enclosure may be filled with nitrogen or inert gas to prevent explosion.
Further, energy storage clusters 20 are arranged in the box body 10 of the embodiment at intervals, a temperature control device 11 is arranged between every two adjacent energy storage clusters 20, and the energy storage clusters 20 are in contact fit with the adjacent temperature control devices 11. The temperature control device 11 of this embodiment is provided with a device temperature control channel for the circulation of a temperature control medium, and further plays a role in controlling temperature. Of course, in some embodiments, a box temperature control device may be further disposed on the side wall and/or the bottom surface of the box 10, and may also perform a function of controlling temperature, which will not be described again.
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 (30)
1. A modular energy storage monomer, includes monomer casing, its characterized in that: a plurality of battery grooves are formed in the single shell, and all the battery grooves are divided into at least one group;
the battery jar is internally provided with at least one energy storage battery, the energy storage batteries which belong to the same group and are arranged in the battery jar are connected in series or in parallel, and the monomer shell is correspondingly provided with monomer tabs corresponding to each group of battery jar.
2. The combined energy storage cell of claim 1, wherein: the single body shell is internally provided with a first side plate and a second side plate which are perpendicular to each other, and the first side plate and the second side plate divide the single body shell into a plurality of battery slots.
3. The combined energy storage cell of claim 2, wherein: and a side plate temperature control flow passage for the circulation of a temperature control medium is arranged in the first side plate.
4. The combined energy storage cell of claim 3, wherein: and a plurality of energy storage batteries are stacked in each battery jar.
5. The combined energy storage cell of claim 4, wherein: and in the battery jar, an insulating heat-conducting diaphragm is arranged between every two adjacent energy storage batteries.
6. The combined energy storage cell of claim 5, wherein: and the insulation heat conduction diaphragm is provided with a thermistor.
7. The combined energy storage cell of claim 5, wherein: one end, close to the first side plate, of the insulating heat conduction diaphragm is attached to the first side plate.
8. The combined energy storage cell of claim 2, wherein: and connecting blocks are arranged in the second side plate, and battery tabs of the energy storage batteries positioned on two sides of the second side plate are connected with the corresponding connecting blocks.
9. The combined energy storage cell of claim 1, wherein: the energy storage battery adopts a soft package battery.
10. The combined energy storage cell of claim 2, wherein: two side surfaces, which are perpendicular to the first side plate and the second side plate, in the single shell are single surfaces, and in the two single surfaces, at least one single surface is provided with a surface temperature control system.
11. The combined energy storage cell of claim 10, wherein: the surface temperature control system comprises a surface temperature control flow channel for circulation of a temperature control medium.
12. The combined energy storage cell of claim 2, wherein: the single body shell comprises two first single body side surfaces parallel to the first side surfaces and two second single body side surfaces parallel to the second side surfaces; and the side surface of the first monomer and/or the side surface of the second monomer are/is provided with exhaust valves for exhausting after the air pressure in the monomer shell exceeds a set value.
13. The combined energy storage cell of claim 12, wherein: and the first side surface and/or the second side surface are/is provided with vent holes for communicating the battery jar with the exhaust valve.
14. The combined energy storage cell of claim 12, wherein: and the exhaust valve is connected with a negative pressure pipe.
15. The combined energy storage cell of claim 12, wherein: the exhaust valve is arranged on one side face of the first monomer and/or the second monomer, the other side face of the first monomer and/or the second monomer is provided with a thermal runaway prevention medium injection pipe, and the thermal runaway prevention medium injection pipe is provided with a thermal runaway prevention medium injection valve.
16. The combined energy storage cell of claim 1, wherein: and reinforcing ribs for reinforcing the structural strength are arranged on the monomer shell.
17. An energy storage cluster, characterized by: comprising a tuft support on which a number of combined energy storing cells according to any one of claims 1-16 are mounted.
18. The energy storage cluster of claim 17, wherein: a first side plate and a second side plate are arranged in the single shell body, and the first side plate and the second side plate are perpendicular to each other; two side faces, perpendicular to the first side plate and the second side plate, of the single shell are made to be single surfaces, in the two single surfaces, at least one of the single surfaces is provided with a surface temperature control system, the surface temperature control system comprises a surface temperature control flow channel for circulation of a temperature control medium, two ends of the surface temperature control flow channel are respectively provided with a first medium inlet and a second medium inlet, the cluster support is provided with a first medium injection pipeline for introducing the temperature control medium and a first medium backflow pipeline for backflow of the temperature control medium, the first medium inlet is connected with the first medium injection pipeline, and the first medium outlet is connected with the first medium backflow pipeline.
19. The energy storage cluster of claim 18, wherein: and a first medium flow control valve for controlling the medium flow is arranged at the first medium inlet.
20. The energy storage cluster of claim 18, wherein: the first medium injection pipeline and the first medium return pipeline are fixedly arranged on the cluster support; or the cluster support comprises a column, and the first medium injection pipe and the first medium return pipe are arranged in the column.
21. The energy storage cluster of claim 17, wherein: energy storage monomers are arranged on the cluster support at intervals, and a temperature control monomer is arranged between every two adjacent energy storage monomers.
22. The energy storage cluster of claim 21, wherein: a single temperature control channel for circulation of a temperature control medium is arranged in the temperature control single body, and a second medium inlet and a second medium outlet are respectively arranged at two ends of the single temperature control channel; the cluster support is provided with a second medium injection pipeline for introducing a temperature control medium and a second medium backflow pipeline for backflow of the temperature control medium, the second medium inlet is connected with the second medium injection pipeline, and the second medium outlet is connected with the second medium backflow pipeline.
23. The energy storage cluster of claim 22, wherein: and a second medium flow control valve for controlling the medium flow is arranged at the second medium inlet.
24. The energy storage cluster of claim 17, wherein: and a temperature control plate is also arranged on the cluster support.
25. The energy storage cluster of claim 24, wherein: and a plate temperature control channel for circulating a temperature control medium is arranged on the temperature control plate.
26. The energy storage cluster of any one of claims 17-25, wherein: the cluster support is provided with a sealed shell, and nitrogen or inert gas is filled in the sealed shell.
27. An energy storage device, characterized by: comprising a box body, wherein a plurality of energy storage clusters as claimed in any one of claims 17-26 are arranged in the box body.
28. The energy storage device of claim 27, wherein: the energy storage clusters are arranged in the box body at intervals, a temperature control device is arranged between every two adjacent energy storage clusters, and the energy storage clusters are in contact fit with the adjacent temperature control devices.
29. The energy storage device of claim 28, wherein: and a device temperature control channel for circulating a temperature control medium is arranged in the temperature control device.
30. The energy storage device of claim 27, wherein: and a box body temperature control device is arranged on the side wall and/or the bottom surface of the box body.
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| CN202111399762.XA CN113991226A (en) | 2021-11-19 | 2021-11-19 | Combined energy storage monomer, energy storage cluster and energy storage device |
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| CN202111399762.XA CN113991226A (en) | 2021-11-19 | 2021-11-19 | Combined energy storage monomer, energy storage cluster and energy storage device |
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