CN115275450A - Square aluminum shell battery - Google Patents
Square aluminum shell battery Download PDFInfo
- Publication number
- CN115275450A CN115275450A CN202211076107.5A CN202211076107A CN115275450A CN 115275450 A CN115275450 A CN 115275450A CN 202211076107 A CN202211076107 A CN 202211076107A CN 115275450 A CN115275450 A CN 115275450A
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- Prior art keywords
- liquid
- battery
- shell
- cover plate
- cooling
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- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 12
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 9
- 239000007788 liquid Substances 0.000 claims abstract description 87
- 239000000110 cooling liquid Substances 0.000 claims abstract description 61
- 238000001816 cooling Methods 0.000 claims abstract description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 238000003860 storage Methods 0.000 claims abstract description 23
- 239000002826 coolant Substances 0.000 claims description 23
- 230000003014 reinforcing effect Effects 0.000 claims description 15
- 238000002347 injection Methods 0.000 claims description 8
- 239000007924 injection Substances 0.000 claims description 8
- 238000003466 welding Methods 0.000 claims description 6
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical compound [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 claims description 3
- 239000012790 adhesive layer Substances 0.000 claims description 2
- 230000035515 penetration Effects 0.000 claims description 2
- 238000013461 design Methods 0.000 description 7
- 238000005728 strengthening Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 230000017525 heat dissipation Effects 0.000 description 6
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000003292 glue Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 235000014666 liquid concentrate Nutrition 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
- H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
-
- 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
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
-
- 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
-
- 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
- H01M10/625—Vehicles
-
- 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
- H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
- H01M10/647—Prismatic or flat cells, e.g. pouch cells
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
- H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
- H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
-
- 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
- H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
-
- 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
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
-
- 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
Abstract
The invention provides a square aluminum shell battery, which relates to the technical field of power batteries and comprises the following components: the battery comprises a battery core, a first liquid outlet and a second liquid outlet, wherein a cooling liquid channel is arranged on the battery core and provided with a liquid inlet and the first liquid outlet; the lower end of the battery cell is connected with the water cooling plate, a liquid storage cavity is formed in the water cooling plate, the liquid inlet is communicated with the liquid storage cavity, and cooling liquid enters the cooling liquid channel through the liquid storage cavity and is discharged from the first liquid outlet; the square aluminum-shell battery has the advantages that the weight of a battery pack is reduced, the energy density is improved, and the cooling efficiency is greatly improved; the battery core has certain deformability, and the adaptability of the long-cycle later period of the battery core to deformation can be improved.
Description
Technical Field
The invention relates to the technical field of power batteries, in particular to a square aluminum shell battery.
Background
The electric vehicle is widely accepted due to the characteristics of energy conservation and environmental protection, and the power battery is used as an energy source of the electric vehicle, so that the dynamic property, the reliability, the safety and the economy of the vehicle are directly influenced. The packaging reliability of the aluminum-shell square lithium battery is high; the system has high energy efficiency; relatively light weight and high energy density; the structure is simpler, and the dilatation is convenient relatively, is the current important option that improves energy density through improving monomer capacity.
The contact area of the square aluminum shell battery cell is too large in the arrangement process, severe temperature rise is caused by high-rate charge and discharge, the cooling plate is often in large-area contact with the battery cell in the conventional design, but the design is convenient for heat management but loses a large amount of energy density.
Accordingly, it is desirable to provide a prismatic aluminum can battery and a cooling method thereof to overcome the above-mentioned drawbacks.
Disclosure of Invention
The invention aims to provide a square aluminum-shell battery, which greatly improves the energy density of the battery on the premise of keeping good thermal management.
In order to achieve the above purpose, the invention provides the following technical scheme: a square aluminum cell, comprising: the battery comprises a battery core, a first liquid outlet and a second liquid outlet, wherein a cooling liquid channel is arranged on the battery core and provided with a liquid inlet and the first liquid outlet; the lower end of the battery cell is connected with the water cooling plate, a liquid storage cavity is formed in the water cooling plate, the liquid inlet is communicated with the liquid storage cavity, and cooling liquid enters the cooling liquid channel through the liquid storage cavity and is discharged from the first liquid outlet; wherein, the first liquid outlet is positioned above the liquid inlet.
Further, the cell has a housing; the shell is sleeved on the battery cell, and the outer surface of the battery cell is connected with the inner surface of the shell.
Further, the shell comprises an inner shell and an outer shell, the inner shell is positioned inside the outer shell, and the inner surface of the inner shell is connected with the battery cell; the inner shell is connected with the outer shell through a plurality of reinforcing ribs; the cooling liquid channel is surrounded by the adjacent reinforcing ribs.
Furthermore, the lower end of the reinforcing rib and the lower end of the shell are located on the same plane, and the upper end of the reinforcing rib and the upper end of the shell are located on the same plane.
Further, the distance between the inner shell and the outer shell is 2mm-8mm.
Furthermore, a connector is arranged on the water cooling plate and is communicated with the liquid storage cavity, and the connector can extend into the cooling liquid channel from the liquid inlet; and a liquid injection port is formed in the water-cooling plate and communicated with the liquid storage cavity, and cooling liquid enters the liquid storage cavity through the liquid injection port.
The battery cell is positioned in a closed space defined by the upper cover plate, the shell and the lower cover plate, the lower end of the battery cell is connected with the lower cover plate, and the upper end of the battery cell is connected with the upper cover plate; the lower cover plate is positioned between the battery cell and the water cooling plate, and a heat-conducting adhesive layer is arranged between the lower cover plate and the water cooling plate; the lower end of the shell is located 1cm-5cm below the upper surface of the lower cover plate.
Furthermore, a convex edge extends downwards from the upper cover plate, a cooling liquid loop is arranged in the convex edge, the position of the cooling liquid loop corresponds to the position of the cooling liquid channel, and the cooling liquid loop is communicated with the cooling liquid channel; a second liquid outlet is formed in the side wall of the convex edge and communicated with the cooling liquid loop; the convex edge is connected with the outer shell in a laser welding mode, and the convex edge is connected with the inner shell in a penetration welding mode.
Further, the thickness of the convex edge is not more than 5cm.
According to analysis, the invention discloses a square aluminum-shell battery, which reduces the weight of a battery pack, improves the energy density and greatly improves the cooling efficiency; the battery core has certain deformability, and the adaptability of the long-cycle later period of the battery core to deformation can be improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiment(s) of the invention and together with the description serve to explain the invention and not to limit the invention. Wherein:
fig. 1 is a schematic perspective view of an embodiment of the present invention.
FIG. 2 is a schematic top view of an embodiment of the present invention.
FIG. 3 is a schematic longitudinal sectional view of an embodiment of the present invention.
Fig. 4 is an enlarged view of bitmap 3 at a.
FIG. 5 is a schematic partial cross-sectional view of an embodiment of the present invention.
Description of reference numerals: 1. the battery cell, 2 and the shell; 201. an inner shell; 202. a housing; 3. reinforcing ribs; 4. A coolant passage; 5. an upper cover plate; 6. a lower cover plate; 7. a second liquid outlet; 8. a coolant loop.
Detailed Description
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings. The various examples are provided by way of explanation of the invention, and not limitation of the invention. In fact, it will be apparent to those skilled in the art that modifications and variations can be made in the present invention without departing from the scope or spirit thereof. For instance, features illustrated or described as part of one embodiment, can be used with another embodiment to yield a still further embodiment. It is therefore intended that the present invention encompass such modifications and variations as fall within the scope of the appended claims and equivalents thereof.
In the description of the present invention, the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are for convenience of description of the present invention only and do not require that the present invention must be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. The terms "connected," "connected," and "disposed" as used herein are intended to be broadly construed, and may include, for example, fixed and removable connections; can be directly connected or indirectly connected through intermediate components; the connection may be a wired electrical connection, a wireless electrical connection, or a wireless communication signal connection, and a person skilled in the art can understand the specific meaning of the above terms according to specific situations.
One or more examples of the invention are illustrated in the accompanying drawings. The detailed description uses numerical and letter designations to refer to features in the drawings. Like or similar designations in the drawings and description have been used to refer to like or similar parts of the invention. As used herein, the terms "first," "second," "third," and "fourth," etc. may be used interchangeably to distinguish one component from another and are not intended to denote position or importance of the individual components.
As shown in fig. 1 to 5, according to an embodiment of the present invention, there is provided a prismatic aluminum-can battery including: the battery comprises a battery core 1, wherein a cooling liquid channel 4 is arranged on the battery core 1, and the cooling liquid channel 4 is provided with a liquid inlet and a first liquid outlet; the lower end of the battery core 1 is connected with the water cooling plate, a liquid storage cavity is formed in the water cooling plate, a liquid inlet is communicated with the liquid storage cavity, and cooling liquid enters the cooling liquid channel 4 through the liquid storage cavity and is discharged from the first liquid outlet; when the battery is used, cooling liquid enters the liquid storage cavity from the liquid injection port of the water cooling plate and is discharged from the first liquid outlet of the liquid injection channel, the cooling liquid channel 4 is arranged on the battery core 1, and the cooling liquid can take away heat generated by the battery core 1 during working after passing through the cooling liquid channel 4, so that the cooling liquid channel 4 is independent of other structures in the battery core 1 on the battery core 1, the situation that the battery is damaged due to leakage, corrosion and the like is not needed when the cooling liquid flows through the cooling liquid channel 4, compared with the traditional water cooling plate heat dissipation mode, the heat dissipation of the battery core 1 can be more uniform due to the arrangement of the cooling liquid channel 4, the situation of uneven temperature is avoided, moreover, the water cooling plate is integrated with the battery core 1, the modularized design can greatly reduce the space occupied by the battery core 1, the flexibility of the position placement of the battery core 1 is increased, and the integrated structure does not need to be excessively treated due to the integral design, so that the integrated structure is more reliable in the installation and the integrated circuit.
Preferably, the battery cell 1 has a housing 2; on electric core 1 was located to casing 2 cover, electric core 1's surface and casing 2's internal surface connection, shell 2 of bilayer structure can strengthen casing 2 to electric core 1's protection effect, under the prerequisite that does not occupy too much space, reduces the damaged possibility of appearing in the electric core use as far as possible.
Preferably, the housing 2 comprises an inner shell 201 and an outer shell 202, the inner shell 201 is located inside the outer shell 202, and the inner surface of the inner shell 201 is connected with the battery cell 1; the inner shell 201 is connected with the outer shell 202 through a plurality of reinforcing ribs 3; the cooling liquid channel 4 is surrounded by the adjacent reinforcing ribs 3, because the shell 2 is of an inner-outer double-layer structure, the structural performance of the shell 2 can be obviously improved through the reinforcing ribs 3, the strength of the shell 2 is higher, the overall weight of the reinforcing ribs 3 is lower, the overall weight of the battery cell 1 cannot be obviously increased, in addition, the reinforcing ribs 3 are arranged along the vertical direction, the cooling liquid channel 4 is formed between the adjacent reinforcing ribs 3, the cooling liquid channel 4 formed by the cooling liquid channel is uniformly distributed, an additional structure is not needed to be arranged, the cost is reduced to the maximum degree, the cooling liquid channel 4 can almost completely cover the side wall of the whole battery cell 1, the heat dissipation effect is improved to the maximum degree, the heat dissipation rate is far higher than that of a traditional water cooling plate, the cooling liquid can be utilized to the maximum degree, the heat absorption effect of the cooling liquid is fully utilized, the supply pressure of the cooling liquid is reduced, in addition, the shell 2 is processed in a molding mode of extruding sectional materials, and the shape of the inner shell 201 can be correspondingly changed according to actual conditions.
Preferably, the lower extreme of strengthening rib 3 and the lower extreme of casing 2 are located the coplanar, the upper end of strengthening rib 3 and the upper end of casing 2 are located the coplanar, strengthening rib 3 and casing 2's upper end and lower extreme parallel and level, can be convenient for the installation of casing 2, make casing 2's overall structure more regular, and make coolant liquid channel 4's vertical length equal with casing 2's vertical length, thereby guarantee that every coolant liquid channel 4 homoenergetic covers casing 2 on vertical height, strengthening rib 3's shape can adapt to the setting according to the intensity requirement when actual production, under the general condition, two adjacent strengthening ribs 3 can enclose into the cross section for polygonal coolant liquid channel 4, generally choose quadrangle or honeycomb type for use, thereby further promote strengthening rib 3's structural strength, strengthening rib 3 cooperates casing 2 can greatly promote the structural strength of casing under the condition that does not increase too much weight, thereby promote the structural strength of battery.
Preferably, the distance between the inner shell 201 and the outer shell 202 is 2mm-8mm, the thickness is selected to be 2mm, 4mm, 6mm, 8mm, and the distance between the outer shell 202 and the inner shell 201 is 2mm-8mm, so that the flow rate of the cooling liquid channel 4 can be increased as much as possible without affecting the structural strength.
Preferably, the water cooling plate is provided with a connector, the connector is communicated with the liquid storage cavity, and the connector can extend into the cooling liquid channel 4 from the liquid inlet; the water-cooling plate is provided with a liquid injection port which is communicated with the liquid storage cavity, the cooling liquid enters the liquid storage cavity through the liquid injection port, the connector is used for communicating the cooling liquid channel 4 and the liquid storage cavity and preventing the cooling liquid from leaking out, in addition, the connector greatly improves the convenience of the cooling liquid cooling plate in production and reduces the integral production difficulty, and the connectors are all arranged on the upper surface of the water-cooling plate and correspond to the position of the cooling liquid channel 4.
Preferably, the battery further comprises an upper cover plate 5 and a lower cover plate 6, wherein the upper cover plate 5 is arranged at the upper end of the shell 2, the lower cover plate 6 is arranged at the lower end of the shell 2, the battery cell 1 is positioned in a closed space defined by the upper cover plate 5, the shell 2 and the lower cover plate 6, the lower end of the battery cell 1 is connected with the lower cover plate 6, and the upper end of the battery cell 1 is connected with the upper cover plate 5; lower apron 6 is located between electric core 1 and the water-cooling board, be equipped with the heat conduction glue film between lower apron 6 and the water-cooling board, the lower extreme of casing 2 is located the below 1cm-5cm department of the upper surface of apron 6 down, optionally 1cm, 2cm, 3cm, 4cm, 5cm, preferably 2cm, can further promote the heat dissipation of battery pack lower part through the heat conduction glue film, promote holistic radiating effect, the lower extreme of casing 2 is located the below 1cm-5cm of the upper surface of apron 6 down and can make casing 2 have sufficient length thereby seal up electric core 1 jointly with lower apron 6.
Preferably, the upper cover plate 5 extends downwards to form a convex edge, a cooling liquid loop 8 is arranged in the convex edge, the position of the cooling liquid loop 8 corresponds to the position of the cooling liquid channel 4, and the cooling liquid loop 8 is communicated with the cooling liquid channel 4; a second liquid outlet 7 is arranged on the side wall of the convex edge, and the second liquid outlet 7 is communicated with a cooling liquid loop 8; protruding edge is connected through laser welding's mode with shell 202, protruding edge is connected through the mode that pierces through the welding with inner shell 201, protruding edge is last to have annular coolant liquid return circuit 8, the coolant liquid can circulate in coolant liquid return circuit 8, coolant liquid in the coolant liquid passageway 4 gets into and discharges in unison from second liquid outlet 7 to coolant liquid return circuit 8 back, make the coolant liquid concentrate through second liquid outlet 7 and discharge the flow direction that makes the user can effectual control coolant liquid, realize the reliable recovery to the coolant liquid, because second liquid outlet 7 is located the top of electric core 1, and the water-cooling plate is located the lower extreme of electric core 1, consequently, the coolant liquid can be through whole electric core 1 in vertical direction, thereby dispel the heat to electric core 1's whole, make electric core 1's heat dissipation more even, also can the at utmost utilize the coolant liquid simultaneously, make the coolant liquid can exert the biggest radiating effect.
Preferably, the thickness of the ledge does not exceed 5cm, and the ledge is typically 1cm in the best case, and when the thickness of the ledge is within this range, the size of the cell 1 can be reduced as much as possible without affecting the operation of the coolant circuit 8.
When the battery is used, the batteries are generally arranged in two rows along the width direction of the battery to form a whole, the second liquid outlets 7 are arranged on the outer side of the whole, all the batteries can be arranged on a large water cooling plate, cooling liquid can be injected into the water cooling plate, the cooling liquid in the water cooling plate can enter the cooling liquid channels 4 of all the batteries simultaneously, so that all the batteries can be radiated simultaneously, the second liquid outlets 7 are all positioned on the outer side of the whole, when the cooling liquid flows out of the second liquid outlets 7, a user can design corresponding channels or pipelines according to the design requirements of the user, so that the cooling liquid discharged from the second liquid outlets 7 of all the batteries is guided into the corresponding channels or pipelines, the unified control of the discharge of the cooling liquid of all the batteries is realized, the daily maintenance difficulty of the batteries is reduced, the cooling efficiency of the batteries is greatly improved through the integrated water inlet and outlet work, the integration degree of the batteries is obviously improved, and the volume of the batteries is reduced.
From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects: according to the invention, the water cooling plate is eliminated, so that the weight of the battery pack is reduced, and the energy density is improved; the battery core 1 and the shell 2 are integrated with the water cooling plate, so that the cooling efficiency is greatly improved; casing 2 adopts the lightweight design of fretwork, and inside is honeycomb or other polygonal muscle profiles, has certain deformability, can promote the long circulation later stage of electric core 1 to the adaptability of deformation, makes electric core 1 can be in long-time use the performance of remain stable.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A prismatic aluminum can battery, comprising:
the battery comprises a battery core, a first liquid outlet and a second liquid outlet, wherein a cooling liquid channel is arranged on the battery core and provided with a liquid inlet and the first liquid outlet;
the lower end of the battery cell is connected with the water cooling plate, a liquid storage cavity is formed in the water cooling plate, the liquid inlet is communicated with the liquid storage cavity, and cooling liquid enters the cooling liquid channel through the liquid storage cavity and is discharged from the first liquid outlet;
wherein the first liquid outlet is positioned above the liquid inlet.
2. The square aluminum can battery of claim 1, wherein the cell has a housing;
the shell is sleeved on the battery cell, and the outer surface of the battery cell is connected with the inner surface of the shell.
3. The square aluminum-shell battery as recited in claim 2, wherein the casing comprises an inner shell and an outer shell, the inner shell is located inside the outer shell, and the inner surface of the inner shell is connected with the battery core;
the inner shell is connected with the outer shell through a plurality of reinforcing ribs;
the cooling liquid channel is surrounded by the adjacent reinforcing ribs.
4. A prismatic aluminum can battery according to claim 3, wherein the lower end of the reinforcing rib is flush with the lower end of the case, and the upper end of the reinforcing rib is flush with the upper end of the case.
5. A prismatic aluminum cell according to claim 3, wherein the distance between said inner case and said outer case is 2mm to 8mm.
6. The square aluminum-shell battery according to claim 1, wherein the water-cooling plate is provided with a connector, the connector is communicated with the liquid storage cavity, and the connector can extend into the cooling liquid channel from the liquid inlet;
the water-cooling plate is provided with a liquid injection port which is communicated with the liquid storage cavity, and cooling liquid enters the liquid storage cavity through the liquid injection port.
7. The square aluminum-shell battery according to claim 3, further comprising an upper cover plate and a lower cover plate, wherein the upper cover plate is arranged at the upper end of the casing, the lower cover plate is arranged at the lower end of the casing, the cell is located in a closed space defined by the upper cover plate, the casing and the lower cover plate, the lower end of the cell is connected with the lower cover plate, and the upper end of the cell is connected with the upper cover plate;
the lower cover plate is positioned between the battery cell and the water cooling plate, and a heat-conducting adhesive layer is arranged between the lower cover plate and the water cooling plate;
the lower end of the shell is located 1cm-5cm below the upper surface of the lower cover plate.
8. The square aluminum-can battery as recited in claim 7, wherein the upper cover plate has a flange extending downward, a coolant loop is disposed in the flange, the coolant loop is disposed at a position corresponding to the position of the coolant channel, and the coolant loop is communicated with the coolant channel;
a second liquid outlet is formed in the side wall of the convex edge and communicated with the cooling liquid loop;
the convex edge is connected with the outer shell in a laser welding mode, and the convex edge is connected with the inner shell in a penetration welding mode.
9. A prismatic aluminum cell according to claim 8, wherein said ledge has a thickness of no more than 5cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211076107.5A CN115275450A (en) | 2022-09-05 | 2022-09-05 | Square aluminum shell battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211076107.5A CN115275450A (en) | 2022-09-05 | 2022-09-05 | Square aluminum shell battery |
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| Publication Number | Publication Date |
|---|---|
| CN115275450A true CN115275450A (en) | 2022-11-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211076107.5A Pending CN115275450A (en) | 2022-09-05 | 2022-09-05 | Square aluminum shell battery |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN216903127U (en) * | 2022-02-11 | 2022-07-05 | 上海桔晟科技有限公司 | Single battery, battery pack and electric equipment |
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2022
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| CN215869656U (en) * | 2021-09-28 | 2022-02-18 | 阳光储能技术有限公司 | Battery and battery shell thereof |
| CN216953657U (en) * | 2021-12-16 | 2022-07-12 | 上海瑞浦青创新能源有限公司 | Cooling duct arrangement |
| CN216903127U (en) * | 2022-02-11 | 2022-07-05 | 上海桔晟科技有限公司 | Single battery, battery pack and electric equipment |
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Application publication date: 20221101 |