CN117293446A - Battery module cooling structure and battery module - Google Patents
Battery module cooling structure and battery module Download PDFInfo
- Publication number
- CN117293446A CN117293446A CN202311577987.9A CN202311577987A CN117293446A CN 117293446 A CN117293446 A CN 117293446A CN 202311577987 A CN202311577987 A CN 202311577987A CN 117293446 A CN117293446 A CN 117293446A
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- Prior art keywords
- cooling
- copper bar
- battery module
- battery
- ring
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Links
- 238000001816 cooling Methods 0.000 title claims abstract description 122
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 83
- 229910052802 copper Inorganic materials 0.000 claims abstract description 83
- 239000010949 copper Substances 0.000 claims abstract description 83
- 239000007788 liquid Substances 0.000 claims abstract description 56
- 239000002826 coolant Substances 0.000 claims abstract description 32
- 239000000178 monomer Substances 0.000 claims abstract description 27
- 239000000110 cooling liquid Substances 0.000 claims description 40
- 238000007789 sealing Methods 0.000 claims description 35
- 238000003825 pressing Methods 0.000 claims description 33
- 238000005192 partition Methods 0.000 claims description 21
- 238000003466 welding Methods 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims 2
- 239000012530 fluid Substances 0.000 claims 1
- 238000009792 diffusion process Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 238000009434 installation Methods 0.000 description 6
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000012809 cooling fluid Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Classifications
-
- 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
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/653—Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
-
- 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
-
- 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
- H01M10/6557—Solid parts with flow channel passages or pipes for heat exchange arranged between the 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
- H01M10/656—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
- 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
- H01M50/249—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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/258—Modular batteries; Casings provided with means for assembling
-
- 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 application relates to a technical field of battery module cooling, especially, relate to a battery module cooling structure and battery module, it includes two at least battery monomers, is provided with the utmost point post on the battery monomer, two adjacent fixedly connected with copper bar on the battery monomer, be provided with the cooling jacket on the copper bar, the mounting hole has been seted up on the relative lateral wall of cooling jacket, the size of mounting hole is the same with the cross section size of copper bar, the copper bar runs through two mounting holes, the inside of cooling jacket forms the coolant cavity with the copper bar, the interval is provided with inlet and liquid outlet on the cooling jacket, inlet and liquid outlet all communicate with the coolant cavity, the coolant cavity is through inlet and liquid outlet flow through the coolant. The application also relates to a battery module. The application has the effect of improving the heat diffusion efficiency inside the battery cell.
Description
Technical Field
The application relates to the technical field of battery module cooling, in particular to a battery module cooling structure and a battery module.
Background
Along with the wide application of new energy electric vehicles, the battery as the new energy electric vehicle is also greatly developed, the battery needs to be charged and discharged in the using process, a great amount of heat is generated in the charging and discharging processes, more parts of the battery, which generate more heat, are positioned in the battery, and the heat needs to be timely discharged from the battery, because the working temperature of the battery is generally 10-45 ℃, and is higher than 45 ℃ or lower than 10 ℃, the performance of the battery is greatly reduced, and even the battery is damaged.
The utility model discloses a battery module among the related art, including casing and the battery monomer of setting in the casing, the casing includes lateral wall and top cap, and the top of top cap connection to the lateral wall is provided with a plurality of air vents on the top cap, is provided with the catheter at the top of top cap, and the catheter covers a plurality of air vents, and the catheter has feed liquor end and play liquid end, and the catheter is used for carrying the coolant liquid, and the catheter sets up to the S type, and the catheter is used for absorbing the heat that the air vent given off. And then carried away by the conveyed coolant.
However, the above structure may cause the heat inside the battery cell to flow slowly, and thus the heat cannot be timely discharged out of the battery cell.
Disclosure of Invention
In order to improve the heat diffusion efficiency inside the battery cell, the application provides a battery module cooling structure and a battery module.
The application provides a battery module cooling structure, adopts following technical scheme:
the utility model provides a battery module cooling structure, includes two at least battery monomers, is provided with the utmost point post on the battery monomer, two adjacent fixedly connected with copper bar on the battery monomer's the utmost point post, be provided with the cooling jacket on the copper bar, set up the mounting hole on the relative lateral wall of cooling jacket, the size of mounting hole is the same with the cross section size of copper bar, the copper bar runs through two mounting holes, the inside of cooling jacket forms the coolant cavity with the copper bar, the interval is provided with inlet and liquid outlet on the cooling jacket, inlet and liquid outlet all communicate with the coolant cavity, the coolant cavity is through inlet and liquid outlet flow through the coolant.
Through adopting above-mentioned technical scheme, during the use, because the heat conduction efficiency between a plurality of metal polar plates of the free inside of battery and the utmost point post is higher, thereby make the temperature of utmost point post higher, the copper bar that the rethread is connected on the utmost point post also has better heat conduction, make the free inside heat of battery can more quickly transmit the position of cooling jacket, the cooling jacket is established on the copper bar through the mounting hole cover, and flow through the coolant liquid in the coolant liquid chamber that the inside of cooling jacket and copper bar formed, make the coolant liquid direct contact with the copper bar, heat that will be transmitted to the copper bar by the battery monomer is taken away through the coolant liquid in time, and then the inside heat diffusion efficiency of battery monomer has been improved.
Preferably, the copper bar is sleeved with a sealing ring and a pressing ring, the pressing ring is fixed on the copper bar, the sealing ring is positioned between the pressing ring and the cooling sleeve and is extruded through the pressing ring and the cooling sleeve, and the sealing ring is sealed at the position where the edge of the cooling sleeve provided with the mounting hole is contacted with the copper bar.
Through adopting above-mentioned technical scheme, the sealing washer setting is in the mounting hole edge of cooling jacket and the position of copper bar contact, when the clamping ring extrudees the sealing washer, makes the sealing washer butt on cooling jacket and copper bar to make the sealing washer carry out good sealedly to cooling jacket and copper bar junction.
Preferably, the cross section of the sealing ring is set to be a right triangle, an inclined plane is formed on one side, far away from the cooling sleeve, of the sealing ring, a chamfer is formed on one side, facing the sealing ring, of the pressing ring, and the position, where the chamfer is formed, of the pressing ring is abutted to the inclined plane.
Through adopting above-mentioned technical scheme, the cross section of sealing washer sets up to triangle-shaped, when the installation clamping ring, extrudees the clamping ring to the direction of cooling jacket earlier, makes the chamfer on the clamping ring extrude with the inclined plane on the sealing washer, and then makes the sealing washer both can the butt on the cooling jacket, but the butt is on the copper bar again to make the clamping ring more convenient to the installation of sealing washer.
Preferably, a plurality of welding lugs are fixedly arranged on one side, opposite to the sealing ring, of the pressing ring, the welding lugs are arranged at intervals and attached to the surface of the copper bar, and the welding lugs are fixedly connected with the copper bar through cold welding.
Through adopting above-mentioned technical scheme, set up a plurality of welding lugs on the clamping ring, after the clamping ring extrusion sealing washer, adopt cold welding's mode to fix the clamping ring on the copper bar, reduce welded length.
Preferably, the cooling liquid cavity is internally provided with a flow guiding component, the flow guiding component comprises a plurality of partition plates and a fixed ring used for connecting the partition plates, the partition plates are spaced and parallel to connecting lines of the liquid inlet and the liquid outlet, the fixed ring is fixedly provided with end parts of the partition plates, a flow channel is formed between two adjacent partition plates, the flow channel is communicated with the middle part of the fixed ring, and the liquid inlet and the liquid outlet respectively correspond to one fixed ring.
Through adopting above-mentioned technical scheme, the division board sets up a plurality of and forms the runner between the adjacent division board, makes the division board form a plurality of divided regions between with the inlet to the liquid outlet to the coolant liquid distributes on the surface of copper bar under the effect of runner, thereby makes the heat of copper bar transmit more to in the coolant liquid.
Preferably, the height of the partition plate is smaller than or equal to that of the mounting hole, the partition plate is detachably arranged in the cooling liquid cavity, and a retaining rod is fixedly arranged on the partition plate and is used for being abutted against the inner wall of the cooling liquid cavity.
Through adopting above-mentioned technical scheme, the high height of division board is less than or equal to the height of mounting hole, makes the water conservancy diversion subassembly that the division board constitutes can directly place the coolant liquid intracavity from the position of mounting hole to make things convenient for the independent preparation of water conservancy diversion subassembly and cooling jacket, the holding rod is used for locating the position of the water conservancy diversion subassembly of placing in the coolant liquid intracavity.
Preferably, the height of the partition plate is smaller than the height of the cooling liquid chamber.
Through adopting above-mentioned technical scheme, the height of division board is less than the height in coolant liquid chamber, makes the top of division board also can have the flow of coolant liquid to the velocity of flow is great, makes the coolant liquid in the runner between the division board and the coolant liquid above the division board mix each other under different velocity of flow, so that the coolant liquid can take away more heat.
Preferably, the side wall of the mounting hole is provided with a heat conducting cover, the heat conducting cover is arranged on the pole, the inner wall of the heat conducting cover is filled with heat conducting gel, the side wall of the heat conducting cover opposite to the cooling sleeve is provided with a plurality of ear plates, the ear plates on the heat conducting cover and the ear plates on the cooling sleeve are alternately and laminated, the ear plates penetrate through the rotating shaft, and the heat conducting cover is rotationally connected on the cooling sleeve through the rotating shaft.
Through adopting above-mentioned technical scheme, connect the heat conduction lid on the cooling jacket, the heat conduction lid cover is established on the utmost point post, makes the heat rethread heat conduction gel of utmost point post position transfer to the heat conduction cover, then the otic placode between rethread heat conduction lid and the cooling jacket is with heat transfer to the coolant liquid, improves the heat diffusion efficiency in the utmost point post.
Preferably, the heat conducting cover is provided with a pressing plate, the middle part of the pressing plate is provided with a tightening screw, the tightening screw is fixed on the cooling sleeve, and two ends of the pressing plate are used for being abutted to the upper surface of the heat conducting cover.
Through adopting above-mentioned technical scheme, the middle part of clamp plate sets up screws up, screws up the screw and fixes the clamp plate on the cooling jacket, makes the both ends butt of clamp plate cover at the heat conduction to can keep the position of heat conduction lid, it is slower with the heat transfer that the heat conduction lid was opened to cause to avoid.
The application provides a battery module, adopts following technical scheme:
a battery module comprises a plurality of battery cells, wherein at least two battery module cooling structures are arranged on the battery cells, a cooling sleeve in the battery module cooling structure is connected through a connecting pipe, and flowing cooling liquid is introduced into the cooling sleeve through the connecting pipe.
Through adopting above-mentioned technical scheme, at least two battery module cooling structure of installation on the battery monomer to connect the cooling jacket through the connecting pipe, so that the battery module can pass the coolant liquid to a plurality of cooling jackets in by the connecting pipe, in order to cool down a plurality of battery monomers.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the copper bar connected to the pole has good heat conductivity, so that heat in the battery monomer can be transferred to the position of the cooling sleeve more quickly, and the cooling liquid flows through a cooling liquid cavity formed by the inner part of the cooling sleeve and the copper bar, so that the cooling liquid is directly contacted with the copper bar, and the heat transferred to the copper bar by the battery monomer is timely taken away by the cooling liquid, thereby improving the heat diffusion efficiency in the battery monomer;
2. the chamfer on the compression ring is extruded with the inclined surface on the sealing ring, so that the sealing ring can be abutted against the cooling sleeve and the copper bar, and the compression ring is convenient to install the sealing ring;
3. through the runner that forms between the adjacent division board, make division board will enter the liquid mouth to form a plurality of divided regions between the liquid outlet to the coolant liquid distributes on the surface of copper bar under the effect of runner, so that the heat of copper bar transmits more to in the coolant liquid.
Drawings
FIG. 1 is a schematic overall structure of an embodiment of the present application;
FIG. 2 is a schematic view of the mounting location of a cooling device in an embodiment of the present application;
FIG. 3 is an exploded view of the mounting structure of the seal ring in an embodiment of the present application;
FIG. 4 is an internal block diagram of a cut-away cooling jacket in an embodiment of the present application;
FIG. 5 is a schematic illustration of the position of a baffle assembly according to an embodiment of the present application;
fig. 6 is a schematic structural view of a heat conductive cover in an embodiment of the present application.
Reference numerals illustrate: 1. a battery cell; 11. a pole; 2. a copper bar; 3. a cooling device; 31. a cooling jacket; 32. a cooling liquid chamber; 33. a liquid inlet; 34. a liquid outlet; 35. a mounting hole; 4. a connecting pipe; 51. a seal ring; 511. an inclined surface; 52. a compression ring; 521. chamfering; 53. welding lugs; 6. a flow guiding assembly; 61. a partition plate; 62. a fixing ring; 63. a flow passage; 64. a holding rod; 7. a heat conductive cover; 71. ear plates; 72. a rotating shaft; 8. a pressing plate; 81. tightening the screw; 82. and (5) connecting the columns.
Description of the embodiments
The present application is described in further detail below in conjunction with figures 1-6.
The embodiment of the application discloses battery module cooling structure, refer to fig. 1, including a plurality of battery monomer 1, all be provided with two utmost point posts 11 on every battery monomer 1, because the inside metal pole piece of battery monomer 1 welds on two utmost point posts 11 to utilize the inside metal pole piece of battery monomer 1 can pass through the position that metal pole piece transmitted utmost point post 11 with heat, the heat conduction efficiency of metal pole piece is higher than the diaphragm heat conduction efficiency in the battery monomer 1. When a plurality of battery cells 1 are connected, a copper bar 2 is arranged between two adjacent battery cells 1, and the copper bar 2 can be connected with two or more than two poles 11 to form battery modules with different voltages and currents.
Referring to fig. 1 and 2, a cooling device 3 is disposed on the surface of the copper bar 2, the cooling device 3 includes a cooling jacket 31, a cooling liquid cavity 32 is formed in the cooling jacket 31, a liquid inlet 33 and a liquid outlet 34 are fixedly disposed on the cooling jacket 31, the liquid inlet 33 and the liquid outlet 34 are both communicated with the cooling liquid cavity 32, and the cooling jacket 31 is mounted on the surface of the copper bar 2. The cooling liquid is conveyed into the cooling sleeve 31 from the liquid inlet 33, then the cooling liquid flows out from the liquid outlet 34, a plurality of copper bars 2 can be arranged on a plurality of battery monomers 1 according to requirements, the cooling sleeve 31 on each copper bar 2 is connected through the connecting pipe 4, the connecting pipe 4 is made of insulating rubber materials, and the cooling sleeve 31 can be made of metal materials. The connecting pipe 4 can be connected in series from the liquid outlet 34 of one cooling jacket 31 to the liquid inlet 33 of another cooling jacket 31, or one connecting pipe 4 can be used for connecting the liquid inlets 33 of a plurality of cooling jackets 31, so that cooling liquid can enter into a plurality of cooling jackets 31 to cool down a plurality of battery cells 1 at the same time. Because the heat of the battery monomer 1 can be rapidly conducted out through the copper bar 2, the heat in the battery monomer 1 is taken away by the copper bar 2 through the cooling jacket 31, and the heat diffusion efficiency in the battery monomer 1 is improved.
Referring to fig. 2 and 3, the cooling jacket 31 is integrally provided in a rectangular shape, mounting holes 35 for penetrating the copper bar 2 are formed in two opposite side walls of the cooling jacket 31, the size of the mounting holes 35 is the same as the cross-sectional size of the copper bar 2, the mounting holes 35 are located at the lower part of the side walls of the cooling jacket 31, the cooling liquid cavity 32 is located at the upper part of the cooling jacket 31 and is formed by the cooling jacket 31 and the copper bar 2 in a closed structure, and the inner wall of the cooling jacket 31 far from the cooling liquid cavity 32 is attached to the lower surface of the copper bar 2. The cooling fluid filled in the cooling fluid cavity 32 adopts glycol or heat conducting oil so as to prevent the cooling fluid from conducting electricity. Because the cooling liquid cavity 32 is sealed by the copper bar 2, the cooling liquid can be directly contacted with the surface of the copper bar 2, so that the heat of the copper bar 2 can be more easily and rapidly taken away, and the heat partition possibly caused by the installation of the cooling jacket 31 on the copper bar 2 is reduced.
Referring to fig. 3, in order to make a good seal at the junction of the cooling jacket 31 and the copper bar 2. The copper bar 2 is sleeved with the sealing ring 51 and the pressing ring 52, a group of the sealing ring 51 and the pressing ring 52 are sleeved at two ends of the copper bar 2, the sealing ring 51 is arranged to be attached to the cooling jacket 31, and the sealing ring 51 is attached to the edge of the inner wall of the mounting hole 35 and the position close to the outer surface of the copper bar 2. The seal ring 51 is formed in a ring shape, so that the circumference of the mounting hole 35 is sealed by the seal ring 51, the cross section of the seal ring 51 is formed in a right triangle shape, and the seal ring 51 is formed with an inclined surface 511, and the inclined surface 511 faces away from the cooling jacket 31. A chamfer 521 is formed on the inner side of the pressing ring 52, which is located on the inner side of the pressing ring 52 and faces the sealing ring 51, and the inclined surface of the chamfer 521 is parallel to the inclined surface 511 so that the pressing ring 52 can be abutted against the inclined surface 511, thereby pressing the pressing ring 52 against the side wall of the cooling jacket 31 and the outer wall of the copper bar 2, and sealing the space between the copper bar 2 and one circumference of the mounting hole 35 by the sealing ring 51. During installation, the compression ring 52 and the cooling sleeve 31 are extruded relatively, so that the sealing ring 51 is extruded and deformed, and then the compression ring 52 is welded on the copper bar 2. The welding lugs 53 are fixedly arranged on one side, deviating from the sealing ring 51, of the pressing ring 52, the welding lugs 53 can be arranged according to the requirement, the welding lugs 53 are adhered to the surface of the copper bar 2, the welding lugs 53 are welded with the copper bar 2 in a cold welding mode, and due to the fact that the welding lugs 53 are arranged at intervals, the welding length of the pressing ring 52 on the copper bar 2 can be reduced, and therefore damage to the copper bar 2 in the welding process is reduced. Since the seal ring 51 is pressed at first when the press ring 52 is welded, the seal ring 51 can be sealed well to the position of the mounting hole 35 by utilizing the existing deformation after the press ring 52 is welded.
Referring to fig. 4 and 5, a flow guiding assembly 6 is disposed in the cooling liquid chamber 32, the flow guiding assembly 6 includes a plurality of partition plates 61 and a fixing ring 62 connecting the plurality of partition plates 61, the plurality of partition plates 61 are parallel to the connection line of the liquid outlet 34 and the liquid inlet 33, and the connection line of the liquid outlet 34 and the liquid inlet 33 can be perpendicular to the length direction of the copper bar 2, so that the two polar posts 11 connected with the copper bar 2 are cooled by the cooling jacket 31 relatively uniformly. The plurality of division plates 61 are arranged at intervals, two adjacent division plates 61 and the division plates 61 form a runner 63 with the inner wall of the cooling liquid cavity 32, the fixed ring 62 is used for fixing the plurality of division plates 61, at least one of the two ends of the division plates 61 is arranged on the fixed ring 62, the connecting ring is opposite to the liquid outlet 34 and the liquid inlet 33, the end part of the division plates 61 connected to the fixed ring 62 bends towards the position of the fixed ring 62 and is distributed around the fixed ring 62, the middle part of the fixed ring 62 is communicated with the runner 63, the liquid inlet 33 enters the cooling liquid cavity 32, and then the cooling liquid is separated into the plurality of runners 63 when passing through the flow guide assembly 6, so that the cooling liquid flows along the runners 63 better and is distributed in the cooling liquid cavity 32, and the efficiency of taking heat from the copper bar 2 by the cooling liquid is improved. The plurality of partition plates 61 are provided with the retaining rods 64, the retaining rods 64 are perpendicular to the plurality of partition plates 61, the retaining rods 64 penetrate through the partition plates 61, meanwhile, the joints of the partition plates 61 and the retaining rods 64 are welded, the partition plates 61 are higher in strength under the action of the retaining rods 64, deformation of the diversion assembly 6 is reduced, two ends of the retaining rods 64 are used for being abutted against the inner wall of the cooling liquid cavity 32, and the positions of the diversion assembly 6 can be located through the retaining rods 64. The flow guiding component 6 and the cooling sleeve 31 are manufactured separately, so that the flow guiding component 6 and the cooling sleeve 31 are manufactured conveniently. Meanwhile, the height of the partition plate 61 is smaller than or equal to the height of the mounting hole 35, so that the diversion assembly 6 can integrally enter the cooling liquid cavity 32 from the position of the mounting hole 35, and the installation of the diversion assembly 6 is facilitated. Meanwhile, the height of the cooling liquid cavity 32 can be larger than that of the flow guide assembly 6, so that the cooling liquid above the flow guide assembly 6 flows radially, the position where the flow velocity difference occurs is changed to turbulent state more easily according to Bernoulli principle, the cooling liquid in the flow channel 63 and the cooling liquid above the flow guide assembly 6 can be mixed, the temperature of the cooling liquid passing through the cooling liquid cavity 32 is uniform, the heat absorption of the copper bar 2 is further improved, the temperature of the position where the cooling liquid is not contacted with the copper bar 2 is high, the temperature far away from the copper bar 2 is low, the formed heat is layered, and the heat absorption efficiency of the copper bar 2 is reduced.
Referring to fig. 6, since both ends of the copper bar 2 are used to connect the poles 11 with the cooling jacket 31 at a position between the two poles 11, it is necessary to transfer heat from the poles 11 to the position of the cooling jacket 31 through the copper bar 2. In order to accelerate the heat transfer between the pole 11 and the cooling jacket 31, heat conducting covers 7 are connected to both ends of the cooling jacket 31, the heat conducting covers 7 are made of heat conducting metal materials, and the heat conducting covers 7 are rotatably connected to the cooling jacket 31. One side of the heat conduction cover 7 is provided with a plurality of ear plates 71, the upper part of the side wall of the cooling sleeve 31 provided with the mounting hole 35 is also provided with a plurality of ear plates 71, the ear plates 71 on the heat conduction cover 7 and the ear plates 71 on the cooling sleeve 31 are alternately arranged, and two adjacent ear plates 71 are tightly attached, so that heat conduction can be carried out between the adjacent ear plates 71, the middle parts of the ear plates 71 are connected through a rotating shaft 72, and the heat conduction cover 7 is rotationally arranged relative to the cooling sleeve 31 through the rotating shaft 72. The heat conduction cover 7 is used for covering the upper end of the pole 11, and the heat conduction cover 7 is abutted on the copper bar 2. A heat conducting gel is arranged between the inside of the heat conducting cover 7 and the pole 11, and the heat conducting gel is curable. When the cooling sleeve 31 is used, the copper bar 2 is fixed on the pole 11 and the nuts on the pole 11 are screwed, then the heat conducting gel is coated in the heat conducting cover 7, and then the heat conducting cover 7 is rotated and covered on the pole 11, so that the pole 11 can be wrapped by the heat conducting gel, a part of heat on the pole 11 is transferred to the cooling sleeve 31 through the heat conducting cover 7, and then the heat is taken away by cooling liquid in the cooling sleeve 31.
Referring to fig. 2, a pressing plate 8 is provided on two heat conduction covers 7, a tightening screw 81 is provided in the middle of the pressing plate 8, two ends of the pressing plate 8 respectively correspond to the upper surfaces of the two heat conduction covers 7, a connecting column 82 is fixedly provided in the middle of the upper surface of the cooling jacket 31, the tightening screw 81 penetrates through the pressing plate 8 to be connected to the connecting column 82 in a threaded manner, two ends of the pressing plate 8 are abutted to the surface, facing away from the pole 11, of the heat conduction cover 7, so that the pressing plate 8 keeps the heat conduction cover 7 to cover the pole 11, and the heat conduction cover 7 is prevented from being opened by rotating upwards.
The embodiment also discloses a battery module, which comprises at least one battery module cooling structure for cooling the battery monomer 1.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (10)
1. The utility model provides a battery module cooling structure, includes two at least battery monomer (1), is provided with utmost point post (11), its characterized in that on battery monomer (1): two adjacent fixedly connected with copper bar (2) on utmost point post (11) of battery monomer (1), be provided with cooling jacket (31) on copper bar (2), set up mounting hole (35) on the opposite lateral wall of cooling jacket (31), the size of mounting hole (35) is the same with the cross section size of copper bar (2), copper bar (2) run through two mounting holes (35), the inside of cooling jacket (31) forms coolant cavity (32) with copper bar (2), the interval is provided with inlet (33) and liquid outlet (34) on cooling jacket (31), inlet (33) and liquid outlet (34) all communicate with coolant cavity (32), coolant fluid (32) are passed through inlet (33) and liquid outlet (34) in the coolant cavity (32).
2. The battery module cooling structure according to claim 1, wherein: the copper bar (2) is sleeved with a sealing ring (51) and a pressing ring (52), the pressing ring (52) is fixed on the copper bar (2), the sealing ring (51) is located between the pressing ring (52) and the cooling sleeve (31) and is extruded through the pressing ring (52) and the cooling sleeve (31), and the sealing ring (51) is sealed at the position where the edge of the cooling sleeve (31) provided with the mounting hole (35) is contacted with the copper bar (2).
3. The battery module cooling structure according to claim 2, wherein: the cross section of the sealing ring (51) is set to be a right triangle, an inclined surface (511) is formed on one side, far away from the cooling sleeve (31), of the sealing ring (51), a chamfer (521) is formed on one side, facing the sealing ring (51), of the pressing ring (52), and the position, where the chamfer (521) is formed, of the pressing ring (52) is abutted to the inclined surface (511).
4. A battery module cooling structure according to claim 2 or 3, characterized in that: a plurality of welding lugs (53) are fixedly arranged on one side, opposite to the sealing ring (51), of the pressing ring (52), the welding lugs (53) are arranged at intervals, the welding lugs (53) are attached to the surface of the copper bar (2), and the welding lugs (53) are fixedly connected with the copper bar (2) through cold welding.
5. The battery module cooling structure according to claim 1, wherein: be provided with water conservancy diversion subassembly (6) in coolant liquid chamber (32), water conservancy diversion subassembly (6) include a plurality of division boards (61) and be used for connecting solid fixed ring (62) of division board (61), a plurality of division boards (61) interval and be on a parallel with the line of inlet (33) and liquid outlet (34), gu fixed ring (62) is fixed to set up the tip of division board (61), forms runner (63) between two adjacent division boards (61), runner (63) are linked together with the middle part of gu fixed ring (62), inlet (33) and liquid outlet (34) correspond a solid fixed ring (62) respectively.
6. The battery module cooling structure according to claim 5, wherein: the height of the division plate (61) is smaller than or equal to that of the mounting hole (35), the division plate (61) is detachably arranged in the cooling liquid cavity (32), a retaining rod (64) is fixedly arranged on the division plate (61), and the retaining rod (64) is used for being abutted to the inner wall of the cooling liquid cavity (32).
7. The battery module cooling structure according to claim 5, wherein: the height of the partition plate (61) is smaller than the height of the cooling liquid cavity (32).
8. The battery module cooling structure according to claim 1, wherein: the cooling jacket (31) is provided with a heat conduction cover (7) connected to the side wall of the mounting hole (35), the heat conduction cover (7) is covered on the pole (11), the inner wall of the heat conduction cover (7) is filled with heat conduction gel, a plurality of lug plates (71) are arranged on the side wall, opposite to the cooling jacket (31), of the heat conduction cover (7), the lug plates (71) on the heat conduction cover (7) are alternately and in fit with the lug plates (71) on the cooling jacket (31), the lug plates (71) penetrate through the rotating shaft (72), and the heat conduction cover (7) is connected to the cooling jacket (31) in a rotating mode through the rotating shaft (72).
9. The battery module cooling structure according to claim 8, wherein: be provided with clamp plate (8) on heat conduction lid (7), the middle part of clamp plate (8) is provided with and screws (81) screw, screw (81) are fixed on cooling jacket (31), and the both ends of clamp plate (8) are used for the butt at the upper surface of heat conduction lid (7).
10. A battery module, characterized in that: the battery module cooling structure comprises a plurality of battery cells (1), wherein at least two battery module cooling structures according to any one of claims 1-9 are arranged on the battery cells (1), a cooling sleeve (31) in the battery module cooling structure is connected through a connecting pipe (4), and flowing cooling liquid is introduced into the cooling sleeve (31) through the connecting pipe (4).
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| CN202311577987.9A CN117293446B (en) | 2023-11-24 | 2023-11-24 | Battery module cooling structure and battery module |
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| CN202311577987.9A CN117293446B (en) | 2023-11-24 | 2023-11-24 | Battery module cooling structure and battery module |
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| CN117293446B (en) | 2024-02-20 |
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