CN215869503U - Independently-controlled energy storage laminated cell, energy storage monomer and energy storage device - Google Patents

Independently-controlled energy storage laminated cell, energy storage monomer and energy storage device Download PDF

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CN215869503U
CN215869503U CN202122225486.7U CN202122225486U CN215869503U CN 215869503 U CN215869503 U CN 215869503U CN 202122225486 U CN202122225486 U CN 202122225486U CN 215869503 U CN215869503 U CN 215869503U
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energy storage
cell
monomer
battery cell
lug
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辛民昌
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Jiuhuan Energy Storage Technology Co ltd
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Jiuhuan Energy Storage Technology Co ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

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Abstract

The utility model discloses an energy storage laminated cell capable of being independently controlled, wherein an insulating isolation layer is arranged between two adjacent energy storage cells, so that the energy storage cells are mutually independent on a laminated structure and can be controlled by each energy storage cell of a control circuitThe on-off state of each switch controls the serial connection, parallel connection or even parallel connection of the switches so as to meet the requirements of different scenes on discharge current and discharge voltage. The utility model also discloses an energy storage monomer, wherein the surface area of all energy storage battery cells in the monomer body is set to be more than or equal to 600000mm2Compare in current battery module promptly, set up the superficial area of this internal energy storage electric core of unit bigger, can effectively improve the free accumulate capacity of energy storage to can satisfy the demand to great accumulate capacity in the energy storage scene. The utility model also discloses an energy storage device.

Description

Independently-controlled energy storage laminated cell, energy storage monomer and energy storage device
Technical Field
The utility model belongs to the technical field of electrochemical energy storage equipment, and particularly relates to an energy storage laminated cell, an energy storage monomer and an energy storage device which can be independently controlled.
Background
No matter the existing laminated battery cell adopts a series connection mode or a parallel connection mode, series-parallel connection is realized among all battery cell units inside the laminated battery cell on a laminated structure, so that after the laminated battery cell is produced, the series-parallel connection mode cannot be changed through an external circuit, and a great number of limitations exist in use. If the parallel laminated cell is more suitable for the working condition requiring large-current discharge, and the series laminated cell is more suitable for the working condition requiring high-voltage output, because the existing laminated cell can not change the series-parallel relation, the working condition requirements of large-current discharge and high-voltage output are difficult to adapt to simultaneously. In addition, in the conventional laminated battery cell, if one of the battery cell units fails, the whole laminated battery cell is scrapped, so that the failure rate of the conventional laminated battery cell is high, and the safety factor is reduced.
Disclosure of Invention
In view of the above, an object of the present invention is to provide an energy storage laminated cell, an energy storage unit and an energy storage device capable of being independently controlled, which can respectively control the series-parallel connection relationship between the energy storage units, and when a certain energy storage unit fails, the energy storage unit and the whole cell can be safely used by cutting off the failed energy storage unit, so that not only the service life can be prolonged, but also the cell is safer.
In order to achieve the purpose, the utility model provides the following technical scheme:
the utility model firstly provides an energy storage laminated cell capable of being independently controlled, which comprises a cell core group, wherein the cell core group comprises at least two energy storage cell cores which are laminated together, and an insulating isolation layer is arranged between every two adjacent energy storage cell cores;
the energy storage battery cells are all battery energy storage battery cells; or the like, or, alternatively,
the energy storage battery cells are all capacitive energy storage battery cells;
the energy storage battery is provided with a first battery cell lug and a second battery cell lug, the control circuit comprises a first wire and a second wire, a first branch line and a second branch line are arranged between the first battery cell lug and the first wire and between the first battery cell lug and the second wire and are connected, and a third branch line and a fourth branch line are arranged between the second battery cell lug and the first wire and between the second battery cell lug and the second wire and are connected;
a first switch, a second switch, a third switch and a fourth switch are respectively arranged on the first branch line, the second branch line, the third branch line and the fourth branch line;
a fifth switch is arranged between the first branch and the connection point of the third branch of the same energy storage cell and the first lead respectively, and a sixth switch is arranged between the second branch and the connection point of the fourth branch of the same energy storage cell and the second lead respectively;
and a seventh switch and an eighth switch which are positioned between two adjacent energy storage electric cores are respectively arranged on the first lead and the second lead.
Further, the insulating isolation layer is made of heat conducting materials.
Furthermore, a cooling channel for circulation of a cooling medium is arranged in the insulating isolation layer.
Furthermore, a thermistor for measuring temperature is arranged on the insulating isolation layer.
Furthermore, the thermistors are respectively arranged at the geometric center and the four diagonal positions of the insulating isolation layer.
Further, the energy storage battery core comprises at least one energy storage unit, the energy storage unit comprises a first current collector and a second current collector, a first electrode material layer is arranged on the first current collector, a second electrode material layer is arranged on the second current collector, a solid electrolyte layer is arranged between the first electrode material layer and the second electrode material layer, or a diaphragm and electrolyte are arranged between the first electrode material layer and the second electrode material layer.
Further, when the energy storage cell comprises at least two energy storage units, a first current collector of one energy storage unit and a second current collector of another energy storage unit are overlapped in the two adjacent energy storage units; or, the first current collector or the second current collector of the two adjacent energy storage units are stacked together.
Further, the energy storage battery core comprises at least three current collectors arranged at intervals, two adjacent current collectors are arranged on opposite side faces of the current collectors respectively, a first electrode material layer and a second electrode material layer are arranged between the first electrode material layer and the second electrode material layer, or a diaphragm and electrolyte are arranged between the first electrode material layer and the second electrode material layer.
Further, of all the current collectors, two current collectors located at two ends are end current collectors, and a current collector located between the two end current collectors is a middle current collector; a first electrode material layer or a second electrode material layer is arranged on the two side surfaces of the middle current collector; or a first electrode material layer and a second electrode material layer are respectively arranged on the two side surfaces of the middle current collector.
Further, the side with the largest area of the energy storage battery cell is taken as the surface area of the energy storage battery cell, and then the sum S of the surface areas of all the energy storage battery cells in the battery cell group is more than or equal to 600000mm2。
Further, the energy storage battery cell is rectangular, and has a length l, a width w and a thickness t, and a surface area s of the energy storage battery cell is lw; and the sum l of the lengths of all the energy storage battery cells belonging to the same battery cell grouptotaAnd nl is 2000-.
Furthermore, the width w of the energy storage battery cell is 100-500mm, and the thickness t is 2.5-250 mm.
Further, a first battery cell lug and a second battery cell lug are arranged on the energy storage battery cell; and two side surfaces with the side length of width w and the thickness t are made to be cell end surfaces, and the first cell lug and the second cell lug are arranged on the same cell end surface or are respectively arranged on the two cell end surfaces.
Furthermore, two sides of which the side length is length l and thickness t are battery cell sides, the battery cell sides are provided with the first battery cell tab and the second battery cell tab, and the first battery cell tab and the second battery cell tab are arranged on the same battery cell side or are respectively arranged on the two battery cell sides.
The utility model also provides an energy storage monomer which comprises a monomer shell, wherein the energy storage laminated battery cell is arranged in the monomer shell.
Further, a first battery cell lug and a second battery cell lug are arranged on the energy storage battery cell; the battery pack is characterized in that a first battery cell lug and a second battery cell lug are arranged on the battery cell shell, the first battery cell lug is connected with the first battery cell lug, and the second battery cell lug is connected with the second battery cell lug.
Further, the single body is cuboid, and the single body has a length L, a width W and a thickness T; two side surfaces with the side length of W and the thickness of T are monomer end surfaces, and two side surfaces with the side length of L and the thickness of T are monomer side surfaces; the first monomer lug and the second monomer lug are arranged on the same monomer end face or are respectively arranged on two monomer end faces; and/or the first single tab and the second single tab are arranged on the same single side face or on the two single side faces respectively.
Further, the single body is cuboid, and the single body has a length L, a width W and a thickness T; two side surfaces with the side length of L and the thickness of T are monomer side surfaces, wherein at least one liquid injection hole is arranged on one monomer side surface or two monomer side surfaces at intervals.
Further, the single body is cuboid, and the single body has a length L, a width W and a thickness T; two side surfaces with the side length of L and the width of W are monomer surfaces, and a temperature control structure is arranged on one monomer surface or two monomer surfaces.
Further, the temperature control structure adopts a cooling channel which is arranged on the surface of the monomer or in the surface of the monomer and is used for medium circulation.
Furthermore, an explosion-proof valve is arranged on the monomer shell.
The utility model also provides an energy storage device which comprises a box body, wherein at least one energy storage monomer is arranged in the box body.
Further, the box body is rectangular and has a length L0Width W0And height H0(ii) a The single body is cuboid and has a length L, a width W and a thickness T; the middle side of the box body is made to be length L0And height H0The two side surfaces of the box body are mounting surfaces, the width W of the box body0And the length L of the monomer body satisfies the following conditions:
L0＝L+δ1or L0＝2L+δ2
Wherein, delta1And delta2Respectively, the thickness occupied by other accessory structures in the tank width direction.
Furthermore, one of the two installation surfaces of the box body is an openable operation surface, the other installation surface is a positioning surface, a single body inserting structure for inserting the energy storage single body is arranged on the positioning surface, and the energy storage single body is inserted in the single body inserting structure through the operation surface array; or the like, or, alternatively,
the energy storage device is characterized in that a middle positioning plate parallel to the mounting surface is arranged in the box body, the side surfaces of two sides of the middle positioning plate are positioning surfaces, the positioning surfaces are provided with single body inserting structures for inserting the energy storage monomers, the mounting surfaces of the box body are openable operation surfaces, and the energy storage monomers are inserted and mounted on the single body inserting structures through the operation surface arrays.
Furthermore, a stabilizing device used for enabling the energy storage monomer to keep stable is arranged in the box body.
Furthermore, partition plates are arranged between the two installation surfaces of the box body at intervals, a plurality of installation grooves are formed in the box body, and a plurality of energy storage monomers form a monomer cluster and are installed in the installation grooves; a single lug is arranged on the single shell, and a first lug matching structure matched with the single lug is arranged on the side surface of the mounting groove in the length direction of the box body when the single lug is arranged on the side surface of the single shell; monomer utmost point ear sets up when on the monomer terminal surface, the mounting groove is located box width direction ascending both ends be equipped with monomer utmost point ear complex second utmost point ear cooperation structure.
The control system comprises a controller, and a thermistor for measuring temperature is arranged on the insulating isolation layer; the controller receives temperature data obtained by measuring the thermistor and sends a control instruction to the control circuit, or the controller sends a control instruction to the control circuit according to the power utilization scene requirement.
The utility model has the beneficial effects that:
according to the energy storage laminated cell capable of being independently controlled, the insulating isolation layer is arranged between the two adjacent energy storage cells, so that the energy storage cells are mutually independent in a laminated structure, and further the series connection, the parallel connection or even the series-parallel connection of the energy storage cells can be controlled through controlling the on-off state of each switch of the circuit, so that the requirements of different scenes on discharge current and discharge voltage can be met.
The surface area of all energy storage battery cells in the monomer body is set to be not less than 600000mm2Compare in current battery module promptly, set up the superficial area of this internal energy storage electric core of unit bigger, can effectively improve the free accumulate capacity of energy storage to can satisfy the demand to great accumulate capacity in the energy storage scene.
The energy storage device of the utility model is characterized in that the width W of the box body is adjusted0Set up to be approximately equal to the length L of monomer body or be approximately equal to the twice of the length L of monomer body, so, the energy storage monomer can be arranged in the box along the width direction of box, is length L through the length of a side0And height H0The installation face can conveniently install the energy storage monomer and overhaul and maintain the energy storage monomer, need not set up the maintenance passageway in the box to can improve space utilization, and then improve the energy storage capacity.
Drawings
In order to make the object, technical scheme and beneficial effect of the utility model more clear, the utility model 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 cell;
FIG. 3a is a schematic diagram of a control circuit;
FIG. 3b is detail A of FIG. 3;
FIG. 4 is a schematic diagram of the distribution structure of thermistors;
fig. 5 is a schematic diagram of a first structure of an energy storage cell;
fig. 6 is a schematic diagram of a second structure of an energy storage cell;
fig. 7 is a schematic diagram of a first structure of a cell unit;
fig. 8 is a schematic diagram of a second structure of a cell unit;
FIG. 9 is a schematic structural diagram of energy storage units connected in parallel;
FIG. 10 is a schematic diagram of the energy storage units connected in series;
fig. 11 is a schematic structural view when a first electrode material layer and a second electrode material layer are respectively disposed on two sides of an intermediate current collector;
fig. 12 is a schematic structural view when a first electrode material layer or a second electrode material layer is respectively disposed on two sides of an intermediate current collector;
FIG. 13 is a schematic structural view of the energy storage device with a middle positioning plate disposed in the tank;
fig. 14 is a schematic structural view of the energy storage device when a partition is provided in the tank.
Description of reference numerals:
10-a box body; 11-a positioning plate; 12-a securing means; 13-a separator; 14-a monomer cluster;
20-energy storage monomers; 21-monomer body; 22-a monolithic shell; 23-an electric core group; 24-an energy storage cell; 25-liquid injection hole; 26-temperature control coil pipe; 27-an explosion-proof valve; 28-an insulating isolation layer; 29-a thermistor; 211-a first cell tab; 212-a second cell tab; 241-a first cell tab; 242 — a second cell tab;
30-an energy storage unit; 31-a first current collector; 32-a second current collector; 33-a first electrode material layer; 24-a layer of a second electrode material; 35-a first electrode material layer; 36-a second electrode material layer; 37-end current collector; 38-intermediate current collector;
40-a control circuit; 41-a first wire; 42-a second wire; 43-first leg; 44-second leg; 45-third leg; 46-fourth leg; 47-first switch; 48-a second switch; 49-a third switch; 50-a fourth switch; 51-a fifth switch; 52-sixth switch; 53-seventh switch; 54-eighth switch.
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 at least one energy storage monomer 20 is arranged in the box body 1. As shown in fig. 2 and fig. 3, the energy storage cell 20 of the present embodiment includes a cell body 21, the cell body 21 includes a cell casing 22, and an energy storage laminated cell is disposed in the cell casing 22. The energy storage laminated cell capable of being independently controlled in the embodiment comprises a cell group, wherein the cell group comprises at least two energy storage cells 24 which are laminated together, and an insulating isolation layer 28 is arranged between every two adjacent energy storage cells 24.
The energy storage cells 24 are all battery energy storage cells; alternatively, the energy storage cells 24 are all capacitive energy storage cells, as shown in fig. 2. But energy storage stromatolite electric core of this embodiment independent control through set up insulating isolation layer 28 between adjacent two energy storage electric cores to make mutual independence between energy storage electric core 24 on laminated structure, and then the switching state of each switch of accessible control circuit, control its series connection, parallelly connected or even series-parallel connection, in order to satisfy the requirement of different scenes to discharge current and discharge voltage.
Specifically, the energy storage laminated cell capable of being independently controlled according to this embodiment further includes a control circuit 40, as shown in fig. 3a and 3 b. The energy storage battery cell 24 is provided with a first battery cell tab 241 and a second battery cell tab 242, the control circuit 40 includes a first wire 41 and a second wire 42, a first branch line 43 and a second branch line 44 are respectively arranged between the first battery cell tab 241 and the first wire 41 and between the first battery cell tab 241 and the second wire 42, and a third branch line 45 and a fourth branch line 46 are respectively arranged between the second battery cell tab 242 and the first wire 41 and between the second battery cell tab 242 and the second wire 42. The first branch 43, the second branch 44, the third branch 45 and the fourth branch 46 are respectively provided with a first switch 47, a second switch 48, a third switch 49 and a fourth switch 50. A fifth switch 51 is arranged between the connection points of the first branch line 43 and the third branch line 45 of the same energy storage cell 24 and the first lead 41, and a sixth switch 52 is arranged between the connection points of the second branch line 44 and the fourth branch line 46 of the same energy storage cell 24 and the second lead 42. A seventh switch 53 and an eighth switch 54 are respectively arranged on the first lead 41 and the second lead 42 and located between two adjacent energy storage electric cores 24. Specifically, when two adjacent energy storage electric cores 24 are connected in series, the fifth switch 51 and the sixth switch 52 are opened, and the second switch 48, the fourth switch 50 and the eighth switch 54 are closed, or the first switch 47, the third switch 49 and the seventh switch 53 are closed. When two adjacent energy storage electric cores 24 are connected in parallel, all of the fifth switch 51, the sixth switch 52, the seventh switch 53 and the eighth switch 54 are closed, and the first switch 47 is closed, the third switch 49 is opened, the second switch 48 is opened and the fourth switch 50 is closed, or the first switch 47 is opened, the third switch 49 is closed, the second switch 48 is closed and the fourth switch 50 is opened.
Further, the insulating isolation layer 28 is made of a heat conductive material, so as to achieve the technical purpose of conducting heat out of the energy storage cell 24. Preferably, a cooling channel for circulation of a cooling medium can be further arranged in the insulating isolation layer 28, so that the temperature control capability is further improved, the internal temperature of the electric core pack is prevented from being too high, and the safety performance is improved. Preferably, a thermistor 29 for measuring temperature may be further provided on the insulating isolation layer 28, so that monitoring of the temperature inside the electric core pack can be achieved, as shown in fig. 4. Preferably, the thermistors 29 are respectively arranged at the geometric center and the four diagonal positions of the insulating isolation layer 28, so that the temperature data acquired by the thermistors 29 can reflect the temperature condition of the whole surface of the energy storage electric core 24.
In particular toWhen the side with the largest area of the energy storage cell 24 is taken as the surface area, the sum S of the surface areas of all the energy storage cells 24 in the cell group 23 is not less than 600000mm2. In the energy storage cell 20 of this embodiment, the surface area of all the energy storage cells in the cell body 21 is set to be equal to or greater than 600000mm2Compare in current battery module promptly, set up the surface area of the energy storage electric core in the monomer body 21 bigger, can effectively improve the free accumulate capacity of energy storage to can satisfy the demand to great accumulate capacity in the energy storage scene.
Specifically, as shown in fig. 5 and fig. 6, the energy storage cell of the present embodiment is a rectangular parallelepiped, the energy storage cell 24 has a length l, a width w, and a thickness t, and a surface area s of the energy storage cell 24 is lw; the sum l of the lengths of all the energy storage cells 24 belonging to the same cell group 23totaAnd nl is 2000-. Further, the width w of the energy storage cell 24 of the present embodiment is 100-. Specifically, when the number of the energy storage cells 24 is one, the length of the energy storage cell 24 is 2000-5000 mm. The energy storage battery cell 24 can flexibly set the size according to the actual use condition, for example, the size of the energy storage battery cell is set as: the length l is 1000mm, w is 100mm, and t is 15mm, and at this time, one electric core group 23 includes 2-5 energy storage electric cores 24. The size of the energy storage cell can also be set as follows: the length l is 2000mm, w is 100mm, and t is 15-30mm, and at this time, one cell group 23 includes 1-2 energy storage cells 24. The width of the energy storage cell 24 is mainly determined according to the requirements of the processing technology (such as coating and liquid injection), and the thickness of the energy storage cell 24 is mainly determined according to the heat dissipation effect. Since the energy storage monomer 21 is provided with the monomer outer shell 22 outside the electric core group 23, it can be known that the size of the energy storage monomer 21 is slightly larger than that of the electric core group 23.
Further, a first cell tab 241 and a second cell tab 242 are arranged on the energy storage cell 24; two side surfaces with the side length of width w and the thickness t are made to be the end surfaces of the electric core, and two side surfaces with the side length of length l and the thickness t are made to be the side surfaces of the electric core; the first cell tab 241 and the second cell tab 242 are arranged on the same cell end face or on two cell end faces respectively; and/or the first cell tab 241 and the second cell tab 242 are disposed on the same cell side surface or disposed on two cell side surfaces, respectively. Specifically, when the length of the energy storage battery cell 24 is short, the first cell tab 241 and the second cell tab 242 may be disposed on the same cell end surface, as shown in fig. 5, and of course, the first cell tab 241 and the second cell tab 242 may also be disposed on two cell end surfaces, respectively. When the length of the energy storage cell 24 is long, the first cell tab 241 and the second cell tab 242 are respectively disposed on two cell end surfaces. In addition, when the length of the energy storage battery cell 24 is long, the first battery cell tab 241 and the second battery cell tab 242 may be respectively disposed on one of the battery cell side surfaces or on two battery cell side surfaces, so as to reduce the internal resistance of the energy storage battery cell 24, further reduce the heat generation of the energy storage battery cell 24, and improve the electrochemical performance of the energy storage battery cell 24, as shown in fig. 5. Specifically, the cell end face and the cell side face of this embodiment are both provided with a first cell tab 241 and a second cell tab 242, and specifically, the first cell tab 241 and the second cell tab 242 may be provided on the same cell side face, or the first cell tab 241 and the second cell tab 242 may be provided on two cell side faces, respectively. Of course, as shown in fig. 6, the first cell tab 241 and the second cell tab 242 may also be configured as surface tabs, that is, the first cell tab 241 and the second cell tab 242 are equal to the width w of the cell end surface.
Further, as shown in fig. 7 and 8, a first cell tab 211 and a second cell tab 212 are disposed on the cell housing 22, the first cell tab 211 is connected to the first cell tab 241, and the second cell tab 212 is connected to the second cell tab 242. The single body 21 of the present embodiment is rectangular, and the single body 21 has a length L, a width W and a thickness T; two side surfaces with the side length of W and the thickness of T are monomer end surfaces, and two side surfaces with the side length of L and the thickness of T are monomer side surfaces; first monomer utmost point ear 211 and second monomer utmost point ear 212 set up on same monomer terminal surface or set up respectively on two monomer terminal surfaces, and/or, first monomer utmost point ear 211 and second monomer utmost point ear set up on same monomer side or set up respectively two on the monomer side. First monomer utmost point ear 211 and the setting of second monomer utmost point ear 212 of this embodiment are on the monomer terminal surface, if first electric core utmost point ear 241 and second electric core utmost point ear 242 set up respectively at two electric core terminal surfaces, but when first monomer utmost point ear 211 and the setting of second monomer utmost point ear 212 were on same monomer terminal surface, can link to each other first electric core utmost point ear 241 or second electric core utmost point ear 242 and first monomer utmost point ear 211 or the second monomer utmost point ear 212 that corresponds through electrically conductive female arranging mode such as, do not restate the statement again.
Further, the single body 21 is rectangular, and has a length L, a width W and a thickness T; two side surfaces with the side length of L and the thickness of T are monomer side surfaces, wherein at least one liquid injection hole 25 is arranged on one monomer side surface or two monomer side surfaces at intervals. When the width W of the cell body 21 is small, the liquid injection hole 25 may be formed in only one of the cell side surfaces, and when the width W of the energy storage cell 24 is large, the liquid injection hole 25 is formed in each of the two cell side surfaces, so as to meet the liquid injection process requirement of the energy storage cell 24. In addition, when the length L of the energy storage battery cell 24 is short, only one liquid injection hole 25 may be provided on the side surface of the cell, and when the length L of the energy storage battery cell 24 is long, 2 or more than 2 liquid injection holes 25 need to be provided at intervals on the side surface of the cell, which will not be described in detail.
Further, the single body 21 is rectangular parallelepiped, and the single body 21 has a length L, a width W, and a thickness T; two side surfaces with the side length of L and the width of W are monomer surfaces, and a temperature control structure is arranged on one monomer surface or two monomer surfaces. The temperature control structure employs temperature control channels 26 disposed on or in the cell surface for media circulation. The temperature control channel 26 of this embodiment is disposed on the single body surface, and the temperature control channel 26 of this embodiment is disposed on the single body surface in a snake shape in an end-to-end manner, and of course, the temperature control channel 26 may also be disposed in a V-shaped end-to-end manner, which will not be described in detail.
Further, the single body housing 22 is provided with an explosion-proof valve 27, and the explosion-proof valve 27 is arranged on the end face or the side face of the single body. The explosion-proof valve 27 of the present embodiment is provided on the end face of the single body.
Further, the energy storage cell 24 includes at least one energy storage unit 30, the energy storage unit 30 includes a first current collector 31 and a second current collector 32, a first electrode material layer 33 and a second electrode material layer 34 are respectively disposed on the first current collector 31 and the second current collector 32, a solid electrolyte layer (not shown in the figure) is disposed between the first electrode material layer 33 and the second electrode material layer 34, or a separator and an electrolyte (not shown in the figure) are disposed between the first electrode material layer 33 and the second electrode material layer 34. That is, the energy storage unit 30 of the present embodiment may be in a solid state or a liquid state, and is selected according to different usage scenarios. Specifically, when the energy storage battery cell 24 includes at least two energy storage units 30, in two adjacent energy storage units 30, a first current collector 31 of one energy storage unit 30 and a second current collector 32 of another energy storage unit 30 are overlapped, and at this time, the two energy storage units 30 are connected in series, as shown in fig. 10; alternatively, the first current collector 31 or the second current collector 32 of the two adjacent energy storage cells 30 are stacked together, and the two energy storage cells 30 are connected in parallel, as shown in fig. 9.
Of course, the energy storage cell 24 may also have other structures, for example, the energy storage cell 24 includes at least three current collectors arranged at intervals, the opposite side surfaces of two adjacent current collectors are respectively provided with a first electrode material layer 35 and a second electrode material layer 36, a solid electrolyte layer (not shown in the figure) is arranged between the first electrode material layer 35 and the second electrode material layer 36, or a diaphragm and an electrolyte (not shown in the figure) are arranged between the first electrode material layer 35 and the second electrode material layer, that is, the energy storage cell 24 may be in a solid state or a liquid state, and is selected according to an actual application scenario, which is not described again. Specifically, of all the current collectors, two current collectors located at two ends are end current collectors 37, and a current collector located between the two end current collectors 37 is a middle current collector 38; the first electrode material layer 35 or the second electrode material layer 36 is arranged on the two side surfaces of the middle current collector 38, and the inside of the energy storage cell 24 at this time is in a parallel structure, as shown in fig. 12; or a first electrode material layer and a second electrode material layer are respectively disposed on two side surfaces of the middle current collector 38, and at this time, the interior of the energy storage cell 24 is in a series structure, as shown in fig. 11.
Further, the case 10 has a rectangular parallelepiped shape, and the case 10 has a length L0Width W0And height H0(ii) a The single body 21 is rectangular, and has a length L, a width W and a thickness T; the middle side of the box body 10 is made to be the length L0And height H0The two side surfaces of the box body are mounting surfaces, the width W of the box body0And the length L of the monomer body satisfies the following conditions:
L0＝L+δ1or L0＝2L+δ2
Wherein, delta1And delta2Respectively, the thickness occupied by other accessory structures in the tank width direction.
I.e., the length of unitary body 21 is approximately the width of pod 10 or approximately half the width of pod 10. Specifically, as shown in fig. 1, when the length of the single body 21 is about the width of the box 10, one of the two installation surfaces of the box 10 is an openable operation surface, the other installation surface is a positioning surface, a single body insertion structure for inserting the energy storage single body is arranged on the positioning surface, and the energy storage single body is inserted into the single body insertion structure through the operation surface array. As shown in fig. 13, when the length of the single body 21 is equal to half of the width of the box 10, a middle positioning plate 11 parallel to the installation surface is arranged in the box 10, both side surfaces of the middle positioning plate 11 are positioning surfaces, a single body inserting structure for inserting the energy storage unit is arranged on the positioning surfaces, two installation surfaces of the box 10 are openable operation surfaces, and the energy storage unit is inserted and installed on the single body inserting structure through two operation surface arrays. In the energy storage device of this embodiment promptly, can realize the grafting installation of energy storage monomer 21 through operation face and locating surface, it is more convenient not only to install, can directly overhaul each energy storage monomer 21 outside the box moreover and maintain, and the difference sets up the affiliated facilities of access way again in box 10 is inside, can effectively improve the space utilization in the box 10, improves energy storage capacity. Preferably, a stabilizing device 12 for stabilizing the energy storage cells is arranged in the box 10.
As shown in fig. 14, the structure inside the case 10 may be: partition plates 13 are arranged between two installation surfaces of the box body 10 at intervals, a plurality of installation grooves are formed in the box body 10, and a plurality of energy storage monomers 20 form a monomer cluster 14 and are installed in the installation grooves; a single lug is arranged on the single shell 22, and when the single lug is arranged on the side surface of the single shell, a first lug matching structure matched with the single lug is arranged on the side surface of the mounting groove in the length direction of the box body; when the single tab is arranged on the single end face, the two ends of the mounting groove, which are located on the width direction of the box body 10, are provided with second tab matching structures matched with the single tabs.
Further, the energy storage device of this embodiment further includes a control system, the control system includes a controller, and the insulation isolation layer is provided with a thermistor 49 for measuring temperature. The controller receives temperature data measured by the thermistor 49 and sends a control instruction to the control circuit 40, and when one of the energy storage battery cells 24 has an abnormal temperature condition, the control circuit 40 can cut off the first cell electrode 241 and the second cell electrode 242 of the energy storage battery cell 24, so as to prevent the energy storage battery cell 24 from further deteriorating, and at the same time, the continuous use of the other energy storage battery cells 24 is not affected. In addition, the controller may also send a control instruction to the control circuit according to the power consumption scene requirement, so as to control the series-parallel connection relationship of the energy storage battery cells 24, and thus, the power consumption requirement of the power consumption scene for unnecessary output current and output voltage is met.
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 utility model is all within the protection scope of the utility model. The protection scope of the utility model is subject to the claims.

Claims (27)

1. The utility model provides an energy storage stromatolite electricity core that can independently control, includes the electric core group, its characterized in that: the battery cell group comprises at least two energy storage battery cells which are laminated together, and an insulating isolation layer is arranged between every two adjacent energy storage battery cells;
the energy storage battery cells are all battery energy storage battery cells; or the like, or, alternatively,
the energy storage battery cells are all capacitive energy storage battery cells;
the energy storage battery is provided with a first battery cell lug and a second battery cell lug, the control circuit comprises a first wire and a second wire, a first branch line and a second branch line are arranged between the first battery cell lug and the first wire and between the first battery cell lug and the second wire and are connected, and a third branch line and a fourth branch line are arranged between the second battery cell lug and the first wire and between the second battery cell lug and the second wire and are connected;
a first switch, a second switch, a third switch and a fourth switch are respectively arranged on the first branch line, the second branch line, the third branch line and the fourth branch line;
a fifth switch is arranged between the first branch and the connection point of the third branch of the same energy storage cell and the first lead respectively, and a sixth switch is arranged between the second branch and the connection point of the fourth branch of the same energy storage cell and the second lead respectively;
and a seventh switch and an eighth switch which are positioned between two adjacent energy storage electric cores are respectively arranged on the first lead and the second lead.
2. The energy storage laminated cell of claim 1, wherein: the insulation isolation layer is made of heat conduction materials.
3. The energy storage laminated cell of claim 2, wherein: and a cooling channel for circulating a cooling medium is arranged in the insulating isolation layer.
4. The energy storage laminated cell of claim 1, wherein: and a thermistor for measuring temperature is arranged on the insulating isolation layer.
5. The energy storage laminated cell of claim 4, wherein: the thermal resistors are respectively arranged at the geometric center and the four diagonal positions of the insulating isolation layer.
6. The energy storage laminated cell of any of claims 1 to 5, wherein: the energy storage battery core comprises at least one energy storage unit, the energy storage unit comprises a first current collector and a second current collector, a first electrode material layer is arranged on the first current collector, a second electrode material layer is arranged on the second current collector, a solid electrolyte layer is arranged between the first electrode material layer and the second electrode material layer, or a diaphragm and electrolyte are arranged between the first electrode material layer and the second electrode material layer.
7. The energy storage laminated cell of claim 6, wherein: when the energy storage cell comprises at least two energy storage units, a first current collector of one energy storage unit and a second current collector of the other energy storage unit are overlapped in the two adjacent energy storage units; or, the first current collector or the second current collector of the two adjacent energy storage units are stacked together.
8. The energy storage laminated cell of any of claims 1 to 5, wherein: the energy storage battery core comprises at least three current collectors arranged at intervals, wherein the current collectors are adjacent to each other, a first electrode material layer and a second electrode material layer are arranged on the opposite side faces of the current collectors respectively, a solid electrolyte layer is arranged between the first electrode material layer and the second electrode material layer, or a diaphragm and electrolyte are arranged between the first electrode material layer and the second electrode material layer.
9. The energy storage laminated cell of claim 8, wherein: among all the current collectors, two current collectors positioned at two ends are end current collectors, and a current collector positioned between the two end current collectors is a middle current collector; a first electrode material layer or a second electrode material layer is arranged on the two side surfaces of the middle current collector; or a first electrode material layer and a second electrode material layer are respectively arranged on the two side surfaces of the middle current collector.
10. The energy storage laminated cell of any of claims 1 to 5, wherein: taking the side with the largest area of the energy storage battery cell as the surface area of the energy storage battery cell, all the energy storage battery cells in the battery cell groupThe sum S of the surface areas of the battery cells is more than or equal to 600000mm2。
11. The energy storage laminated cell of claim 10, wherein: the energy storage battery cell is rectangular, and has a length l, a width w and a thickness t, and the surface area s of the energy storage battery cell is lw; and the sum l of the lengths of all the energy storage battery cells belonging to the same battery cell grouptotaAnd nl is 2000-.
12. The energy storage laminated cell of claim 11, wherein: the width w of the energy storage battery cell is 100-500mm, and the thickness t is 2.5-250 mm.
13. The energy storage laminated cell of claim 11, wherein: a first battery cell lug and a second battery cell lug are arranged on the energy storage battery cell; and two side surfaces with the side length of width w and the thickness t are made to be cell end surfaces, and the first cell lug and the second cell lug are arranged on the same cell end surface or are respectively arranged on the two cell end surfaces.
14. The energy storage laminated cell of claim 13, wherein: two sides with the side length of length l and the thickness t are made to be battery cell sides, the battery cell sides are provided with the first battery cell tab and the second battery cell tab, and the first battery cell tab and the second battery cell tab are arranged on the same battery cell side or are respectively arranged on the two battery cell sides.
15. An energy storage cell, comprising: comprising a cell casing within which is disposed an energy storage laminated cell according to any of claims 1-14.
16. An energy storage cell according to claim 15, wherein: a first battery cell lug and a second battery cell lug are arranged on the energy storage battery cell; the battery pack is characterized in that a first battery cell lug and a second battery cell lug are arranged on the battery cell shell, the first battery cell lug is connected with the first battery cell lug, and the second battery cell lug is connected with the second battery cell lug.
17. An energy storage cell according to claim 16, wherein: the single body is cuboid and has a length L, a width W and a thickness T; two side surfaces with the side length of W and the thickness of T are monomer end surfaces, and two side surfaces with the side length of L and the thickness of T are monomer side surfaces; the first monomer lug and the second monomer lug are arranged on the same monomer end face or are respectively arranged on two monomer end faces; and/or the first single tab and the second single tab are arranged on the same single side face or on the two single side faces respectively.
18. An energy storage cell according to claim 15, wherein: the single body is cuboid and has a length L, a width W and a thickness T; two side surfaces with the side length of L and the thickness of T are monomer side surfaces, wherein at least one liquid injection hole is arranged on one monomer side surface or two monomer side surfaces at intervals.
19. An energy storage cell according to claim 15, wherein: the single body is cuboid and has a length L, a width W and a thickness T; two side surfaces with the side length of L and the width of W are monomer surfaces, and a temperature control structure is arranged on one monomer surface or two monomer surfaces.
20. An energy storage cell according to claim 19, wherein: the temperature control structure adopts a cooling channel which is arranged on the surface of the monomer or in the surface of the monomer and is used for medium circulation.
21. An energy storage cell according to claim 15, wherein: and an explosion-proof valve is arranged on the monomer shell.
22. An energy storage device, characterized by: comprising a tank in which at least one energy storing cell according to any one of claims 1-21 is arranged.
23. The energy storage device of claim 22, wherein: the box body is cuboid and has a length L0Width W0And height H0(ii) a The single body is cuboid and has a length L, a width W and a thickness T; the middle side of the box body is made to be length L0And height H0The two side surfaces of the box body are mounting surfaces, the width W of the box body0And the length L of the monomer body satisfies the following conditions:
L0＝L+δ1or L0＝2L+δ2
Wherein, delta1And delta2Respectively, the thickness occupied by other accessory structures in the tank width direction.
24. The energy storage device of claim 23, wherein: one of the two installation surfaces of the box body is an openable operation surface, the other installation surface is a positioning surface, a single body inserting structure for inserting the energy storage single body is arranged on the positioning surface, and the energy storage single body is inserted in the single body inserting structure through the operation surface array; or the like, or, alternatively,
the energy storage device is characterized in that a middle positioning plate parallel to the mounting surface is arranged in the box body, the side surfaces of two sides of the middle positioning plate are positioning surfaces, the positioning surfaces are provided with single body inserting structures for inserting the energy storage monomers, the mounting surfaces of the box body are openable operation surfaces, and the energy storage monomers are inserted and mounted on the single body inserting structures through the operation surface arrays.
25. The energy storage device of claim 24, wherein: and a stabilizing device used for keeping the energy storage monomer stable is arranged in the box body.
26. The energy storage device of claim 23, wherein: partition plates are arranged between the two installation surfaces of the box body at intervals, a plurality of installation grooves are formed in the box body, and a plurality of energy storage monomers form a monomer cluster and are installed in the installation grooves; a single lug is arranged on the single shell, and a first lug matching structure matched with the single lug is arranged on the side surface of the mounting groove in the length direction of the box body when the single lug is arranged on the side surface of the single shell; monomer utmost point ear sets up when on the monomer terminal surface, the mounting groove is located box width direction ascending both ends be equipped with monomer utmost point ear complex second utmost point ear cooperation structure.
27. The energy storage device of claim 22, wherein: the control system comprises a controller, and a thermistor for measuring temperature is arranged on the insulating isolation layer; the controller receives temperature data obtained by measuring the thermistor and sends a control instruction to the control circuit, or the controller sends a control instruction to the control circuit according to the power utilization scene requirement.
CN202122225486.7U 2021-09-14 2021-09-14 Independently-controlled energy storage laminated cell, energy storage monomer and energy storage device Active CN215869503U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202122225486.7U CN215869503U (en) 2021-09-14 2021-09-14 Independently-controlled energy storage laminated cell, energy storage monomer and energy storage device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202122225486.7U CN215869503U (en) 2021-09-14 2021-09-14 Independently-controlled energy storage laminated cell, energy storage monomer and energy storage device

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CN215869503U true CN215869503U (en) 2022-02-18

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