CN115275435A - Battery module and battery package with heat dissipation buffer structure - Google Patents
Battery module and battery package with heat dissipation buffer structure Download PDFInfo
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- CN115275435A CN115275435A CN202211080464.9A CN202211080464A CN115275435A CN 115275435 A CN115275435 A CN 115275435A CN 202211080464 A CN202211080464 A CN 202211080464A CN 115275435 A CN115275435 A CN 115275435A
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- 239000013013 elastic material Substances 0.000 claims abstract description 7
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- 230000005611 electricity Effects 0.000 claims description 33
- 239000000110 cooling liquid Substances 0.000 claims description 17
- 239000002826 coolant Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000000712 assembly Effects 0.000 abstract description 20
- 238000000429 assembly Methods 0.000 abstract description 20
- 230000003139 buffering effect Effects 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 3
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- 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
- H01M10/61—Types of temperature control
- H01M10/617—Types of temperature control for achieving uniformity or desired distribution of temperature
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6554—Rods or plates
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
-
- 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
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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
- H01M10/6561—Gases
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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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
- H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
- H01M50/209—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
- H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
- H01M50/242—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries against vibrations, collision impact or swelling
-
- 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
- H01M50/258—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
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Secondary Cells (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention provides a battery module and a battery pack with a heat dissipation buffer structure, which comprise a battery cell module, a bottom liquid cooling assembly and side liquid cooling assemblies, wherein the battery cell module comprises a plurality of single battery cells, the bottom liquid cooling assembly comprises a plurality of first liquid cooling pipe fittings which are in contact with the bottom surfaces of the single battery cells, the first liquid cooling pipe fittings are sequentially connected in series along the radial direction of the first liquid cooling pipe fittings, a group of side liquid cooling assemblies are arranged on the large surface of each single battery cell, each side liquid cooling assembly comprises a plurality of second liquid cooling pipe fittings which are in contact with the large surface of each single battery cell, the second liquid cooling pipe fittings are sequentially connected in series along the radial direction of the second liquid cooling pipe fittings, and the first liquid cooling pipe fittings and the second liquid cooling pipe fittings are made of elastic materials; the liquid cooling pipe fittings are arranged on the bottom surface and the large surface of the single battery cell, so that liquid cooling heat dissipation can be realized on the large surface and the bottom surface of the single battery cell, and the cooling heat dissipation efficiency of the battery module is improved; simultaneously, the liquid cooling pipe fitting is the elasticity material, has realized that the liquid cooling pipe fitting is when the heat dissipation to the battery module, also can play the effect of giving the buffering when the battery module inflation.
Description
Technical Field
The invention relates to the technical field of power batteries, in particular to the technical field of thermal management of power batteries, and particularly relates to a battery module with a heat dissipation buffer structure and a battery pack.
Background
With the development of economy and the advancement of technology, the demand of energy is gradually increased. The new energy is taken as clean secondary energy, has the advantages of small pollution, renewability and the like, and is more and more favored by people. In general, the storage and utilization of new energy are realized by a power single battery pack. Each single battery pack is composed of a plurality of battery modules, and each battery module is composed of a plurality of single batteries connected in series and in parallel. In recent years, in order to improve the energy density of an energy storage system, a single battery of a power single battery pack generally adopts a square aluminum shell large battery cell, and the single battery has the characteristics of thicker thickness, higher height and larger overall size. And the demand for the electrochemical energy storage system operated at high rate is kept in the market, and the demand for the single battery is higher when the electrochemical energy storage system operated at high rate is operated.
To power battery, in the use, can appear on the one hand because battery module temperature rise is too high, can't continuously carry out high magnification charge-discharge, influence the holistic operational life of energy storage product, on the other hand, along with battery cell's energy density is higher and higher, battery cell's bulging force is also bigger and bigger, and corresponding battery module's bulging force is also higher and higher, shortens battery module's life.
In order to solve the above problems, a liquid cooling plate is usually disposed on the bottom surface of the battery module to cool and dissipate the heat of the single batteries in the battery module, and foam is disposed between the large surfaces of the single batteries to absorb and buffer the expansion of the battery module to some extent.
The heat dissipation mode of increasing the heat transfer of liquid cooling board in battery module bottom, this mode generally is used for the low multiplying power operation, generates heat less electrochemical energy storage product on. However, the large electric core of the square aluminum shell is under the high-rate operation condition, the single battery has large heat productivity, and the liquid cooling plate is arranged at the bottom of the battery module, so that the temperature rise of the battery module is difficult to control. Simultaneously, this radiating mode also can the battery cell in-process that generates heat, and the bulging force is more obvious to make the cotton unable buffering absorption to expansion pressure that satisfies of bubble.
Chinese patent CN113437414A discloses a battery module with a heat-conducting buffer structure, which is characterized in that a liquid cooling plate is disposed on the bottom surface of the battery module, a heat conductor is disposed between the large surfaces of the single batteries, the lower portion of the heat conductor is connected to the liquid cooling plate, and the heat conductor is made of an elastic buffer material. On one hand, the heat generated by the large surface of the single battery is transferred to the liquid cooling plate through the heat conductor, so that the heat is dissipated; on the other hand, the material of heat conductor adopts the elastic buffer material, can be compressed under the extruded condition to absorb the bulging force that the battery cell produced, reduce with the bulging force that guarantees whole battery module and produce.
Although the cooling heat dissipation problem of battery module can be solved to above-mentioned patent, can solve the bulging force problem that produces because of the battery module inflation again. But the heat that produces between the battery cell is on the liquid cooling board of battery module bottom surface is transmitted through the heat conductor, and this kind of mode is still the liquid cooling board of battery module bottom surface bearing the cooling heat transfer of whole battery module in essence, and heat exchange efficiency is low, can not the high-efficient temperature rise of control battery module.
Although under the teaching of the above patent, the skilled person can also set a liquid cooling plate between the large surfaces of the single batteries, so as to increase the usage of the cooling medium, thereby increasing the heat exchange efficiency of the battery module. But the liquid cooling board belongs to whole board design, there is not compressibility, can't absorb the battery cell expansive force in the charge-discharge process, if need solve the inflation buffering problem, just need set up buffer part respectively at liquid cooling board both sides face, from this, will bring some problems, on the one hand, liquid cooling board both sides increase buffer part, make clearance increase between the battery cell, the energy density of battery module has been reduced, on the other hand, the liquid cooling board is through carrying out the heat exchange between buffer part and the battery cell big face, buffer part has participated in the heat transfer, the liquid cooling efficiency of liquid cooling board has been reduced.
Disclosure of Invention
In view of this, the invention provides a battery module and a battery pack with a heat dissipation buffer structure, which improve the heat exchange efficiency of the battery module and solve the problem of buffer absorption of the expansion force of the battery module.
The technical scheme of the invention is realized as follows:
on one hand, the invention provides a battery module with a heat dissipation buffer structure, which comprises a battery cell module, a bottom liquid cooling assembly and a side liquid cooling assembly, wherein the battery cell module comprises a plurality of single battery cells, the plurality of single battery cells are arrayed along the length direction and the width direction of the plurality of single battery cells, the bottom liquid assembly is horizontally arranged on the bottom surface of the battery cell module and is contacted with the bottom surfaces of the single battery cells, and the side liquid cooling assembly is arranged between the large surface and the single surface of the single battery cells;
the bottom liquid cooling assembly comprises a plurality of first liquid cooling pipe fittings which are contacted with the bottom surfaces of the single battery cores, the plurality of first liquid cooling pipe fittings are sequentially connected in series along the radial direction of the plurality of first liquid cooling pipe fittings, the length direction of the first liquid cooling pipe fittings is flush with the length direction of the single battery cores, the first liquid cooling pipe fittings are made of elastic materials, a first liquid cooling channel which penetrates through the first liquid cooling pipe fittings is arranged in the first liquid cooling pipe fittings along the length direction of the first liquid cooling pipe fittings, and the first liquid cooling channel is used for circularly introducing cooling liquid;
a group of side liquid cooling assemblies are arranged on the large surfaces of the single electric cores, each side liquid cooling assembly comprises a plurality of second liquid cooling pipe fittings which are contacted with the large surfaces of the single electric cores, and the second liquid cooling pipe fittings are sequentially arranged in parallel along the width direction of the large surfaces of the single electric cores; the second liquid cooling pipe fitting is made of elastic materials, a second liquid cooling channel penetrating through the second liquid cooling pipe fitting is formed in the second liquid cooling pipe fitting along the length direction of the second liquid cooling pipe fitting, and the second liquid cooling channel is used for circularly introducing cooling liquid.
On the basis of the technical scheme, preferably, the first liquid cooling pipe fitting comprises a first connecting portion, a first contact portion and a first elastic portion, the first connecting portion and the first contact portion are arranged oppositely, the outer top surface of the first connecting portion is connected with the bottom surface of the monomer battery core, one surface of the first contact portion, away from the first connecting portion, is arc-shaped, the outer wall of the first contact portion is used for being in contact with the bottom surface of a box body for installing the battery module, the first connecting portion is connected with the first contact portion through the first elastic portion, and the first elastic portion is sunken towards the inside of the first liquid cooling channel.
On the basis of the technical scheme, preferably, two sets of side liquid cooling subassemblies between two adjacent monomer electricity cores align each other, the second liquid cooling pipe fitting includes second connecting portion, second contact site and second elastic component, and two second liquid cooling pipe fittings on the horizontal direction between two adjacent monomer electricity cores pass through second connecting portion interconnect, and the second connecting portion sets up with the second contact site relatively, and the one side that the second connecting portion were kept away from to the second contact site is the arc form, and second contact site outer wall and monomer electricity core large face contact are connected through second elastic component between second connecting portion and the second contact site, and the second elastic component is sunken to second liquid cooling passageway inside.
Preferably, the first liquid cooling pipe fitting further comprises a plurality of first hinge lugs and a plurality of second hinge lugs which are arranged in pairs along the length direction of the first liquid cooling pipe fitting, the first hinge lugs are fixedly arranged on one side of the first connecting part in the width direction, the second hinge lugs are fixedly arranged on the other side of the first connecting part in the width direction, and the first hinge lugs and the second hinge lugs between two adjacent first liquid cooling pipe fittings are hinged through hinge shafts; the second liquid cooling pipe fitting further comprises a plurality of third hinge lugs and fourth hinge lugs which are arranged in pairs along the length direction of the second liquid cooling pipe fitting, the third hinge lugs are fixedly arranged on one side of the width direction of the second connecting portion, the fourth hinge lugs are fixedly arranged on the other side of the width direction of the second connecting portion, and the third hinge lugs and the fourth hinge lugs between every two adjacent second liquid cooling pipe fittings are hinged through hinge shafts.
On the basis of the technical scheme, preferably, all be provided with a set of base liquid cooling subassembly on every monomer electricity core bottom surface, the shape size of first liquid cooling pipe fitting is the same with the shape size of second liquid cooling pipe fitting, and the side liquid cooling subassembly on two macrosurfaces of monomer electricity core is established ties with the base liquid cooling subassembly of monomer electricity core bottom surface respectively, and the one end that base liquid cooling subassembly was kept away from to two sets of side liquid cooling subassemblies between two adjacent monomer electricity cores is established ties.
On the basis of the technical scheme, preferably, a first liquid inlet joint and a first liquid outlet joint which are connected with the first liquid cooling channel are respectively arranged at two ends of the first liquid cooling pipe fitting in the length direction; and a second liquid inlet joint and a second liquid outlet joint which are connected with the second liquid cooling channel are respectively arranged at two ends of the second liquid cooling pipe in the length direction.
On the basis of the technical scheme, preferably, a liquid inlet confluence plate and a liquid outlet confluence plate are respectively arranged at two ends of the battery cell module in the length direction, a liquid inlet confluence flow channel is arranged in the liquid inlet confluence plate, a liquid inlet header pipe connected with the liquid inlet confluence flow channel is arranged on the liquid inlet confluence plate, and a first liquid inlet joint and a second liquid inlet joint are respectively connected with the liquid inlet confluence flow channel; a liquid outlet confluence flow channel is arranged in the liquid outlet confluence plate, a liquid outlet main pipe connected with the liquid outlet confluence flow channel is arranged on the liquid outlet confluence plate, and the first liquid outlet joint and the second liquid outlet joint are respectively connected with the liquid outlet confluence flow channel.
Further, it is preferred, the feed liquor converges the runner and includes a plurality of feed liquor runner sections, it is a plurality of the feed liquor runner section sets up along feed liquor cylinder manifold length side interval, each the feed liquor runner section is corresponding with the monomer electricity core side of electricity core module length direction one end respectively, the feed liquor converges the runner and still includes the feed liquor cavity and divides the liquid runner with a plurality of feed liquors that the feed liquor cavity is parallelly connected, the feed liquor cavity is connected with the inlet manifold, each the feed liquor divides the liquid runner to communicate with feed liquor runner section respectively, feed liquor runner section width direction both sides are provided with the second feed liquor runner respectively, feed liquor runner section bottom level is provided with first feed liquor runner, the first inlet that is connected with first feed liquor joint is seted up on the feed liquor cylinder manifold surface that corresponds on the first feed liquor runner, the second inlet that is connected with second feed liquor joint is seted up on the feed liquor cylinder manifold surface that corresponds on the second feed liquor runner.
Preferably, the liquid outlet confluence flow channel comprises a plurality of liquid outlet flow channel sections, the liquid outlet flow channel sections are arranged at intervals along the length direction of the liquid outlet confluence plate, each liquid outlet flow channel section corresponds to a single battery cell side face at one end of the battery cell module in the length direction, the liquid outlet confluence flow channel further comprises a liquid outlet cavity and a plurality of liquid outlet liquid distribution flow channels connected with the liquid outlet cavity in parallel, the liquid outlet cavity is connected with the liquid outlet header pipe, each liquid outlet liquid distribution flow channel is communicated with the liquid outlet flow channel section, second liquid outlet flow channels are arranged on two sides of the liquid outlet flow channel section in the width direction, a first liquid outlet flow channel is horizontally arranged at the bottom of the liquid outlet flow channel section, a first liquid outlet connected with the first liquid outlet joint is arranged on the surface of the corresponding liquid outlet confluence plate on the first liquid outlet flow channel, and a second liquid outlet connected with the second liquid outlet joint is arranged on the surface of the corresponding liquid outlet confluence plate on the second liquid outlet flow channel.
On the other hand, the invention also discloses a battery pack which comprises the battery module with the heat dissipation buffer structure and a box body for installing the battery module.
Compared with the prior art, the invention has the following beneficial effects:
(1) The battery module with the heat dissipation buffer structure is characterized in that a bottom liquid cooling assembly is arranged on the bottom surface of the battery cell module, and a group of side liquid cooling assemblies is arranged on the large surface of each single battery cell; meanwhile, the first liquid cooling pipe fitting and the second liquid cooling pipe fitting are made of elastic materials, so that the liquid cooling pipe fittings can be compressed when the single battery cell expands, and the expansion force of the single battery cell is buffered and absorbed through the deformation of the liquid cooling pipe, and therefore, the heat dissipation buffer structure can also play a role of buffering when the battery module expands while dissipating heat of the battery module;
(2) The liquid cooling pipe fittings are hinged and connected in series, so that a fit clearance is formed between the liquid cooling pipe fittings, on one hand, air heat dissipation can be realized in the clearance between the liquid cooling pipe fittings, and on the other hand, when the liquid cooling pipe fittings are extruded by the single electric core, the expansion displacement of the liquid cooling pipe can be provided by the clearance between the liquid cooling pipe fittings;
(3) On one hand, the length of the side liquid cooling assembly and the length of the bottom liquid cooling assembly can be adjusted, the liquid cooling assembly can be suitable for being installed in battery modules with different sizes, and the liquid cooling device is flexible and changeable and has strong operability; on the other hand, the liquid cooling pipe fittings are respectively filled with cooling liquid, so that the side liquid cooling assembly and the bottom liquid cooling assembly form a straight flow passage structure, and the cooling liquid is synchronously filled into the plurality of liquid cooling pipe fittings, so that the large surface and the bottom surface of the single battery cell can be synchronously radiated, and the heat exchange efficiency of the surface unit area of the single battery cell is improved;
(4) When the single battery cell forms a battery cell module, a certain pre-pressure can be applied to the second contact part to deform the surface, so that the contact area between the second contact part and the surface of the single battery cell is increased, the heat exchange efficiency of the second liquid cooling pipe fitting to the large surface of the single battery cell is improved, and when the single battery cell expands, the larger the pressure is, the larger the deformation and flattening degree of the second contact part is, the contact area between the second contact part and the large surface of the single battery cell is further improved, so that the heat exchange efficiency is improved;
(5) Through set up feed liquor cylinder manifold and play liquid cylinder manifold respectively at electric core module length direction both ends to make each liquid cooling pipe fitting both ends be connected with the feed liquor flow path that converges in the feed liquor cylinder manifold and the play liquid flow path that converges in the play liquid cylinder manifold respectively, realize the flow of the coolant liquid of each liquid cooling pipe fitting business turn over the same from this, improve each regional heat transfer equilibrium in monomer electric core surface.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic perspective view of a battery pack according to the present disclosure;
fig. 2 is a schematic perspective view of a battery module according to the present disclosure;
fig. 3 is a schematic plan view illustrating a battery module according to the present invention;
FIG. 4 is a schematic perspective view of a side liquid cooling assembly according to the present disclosure;
FIG. 5 is an enlarged view of a portion A of FIG. 4;
FIG. 6 is a schematic view of an assembly structure of a bottom liquid cooling assembly and a side liquid cooling assembly according to the present disclosure;
FIG. 7 is an enlarged view of a portion B of FIG. 6;
FIG. 8 is a schematic perspective view of a liquid inlet bus bar according to the present disclosure;
FIG. 9 is a schematic view of the internal structure of the liquid inlet channel section disclosed in the present invention;
fig. 10 is a schematic view of the internal structure of the liquid inlet and separating flow channel disclosed by the invention;
FIG. 11 is a schematic perspective view of a liquid outlet bus plate according to the present disclosure;
fig. 12 is a schematic view of an internal structure of the liquid outlet channel section disclosed in the present invention;
fig. 13 is a schematic view of the internal structure of the liquid outlet and distribution flow channel disclosed by the invention;
the attached drawings are as follows:
m, a battery module; 1. a battery cell module; 2. a base liquid cooling assembly; 3. a side liquid cooling assembly; 11. a single cell; 20. a first liquid cooling pipe; 201. a first liquid cooling channel; 30. a second liquid cooling tube; 301. a second liquid cooling passage; 202. a first connection portion; 203. a first contact portion; 204. a first elastic portion; 302. a second connecting portion; 303. a second contact portion; 304. a second elastic part; 205. a first hinge lug; 206. a second hinge lug; 305. a third hinge lug; 306. a fourth hinge lug; 207. a first liquid inlet joint; 208. a first liquid outlet joint; 307. a second liquid inlet joint; 308. a second liquid outlet joint; 4. a liquid inlet confluence plate; 5. liquid outlet confluence plates; 41. a liquid inlet main pipe; 42. a liquid inlet converging flow channel; 421. a liquid inlet flow passage section; 422. a liquid inlet chamber; 423. a liquid inlet and separation flow channel; 4211. a first liquid inlet flow channel; 4212. a second liquid inlet flow channel; 4213. a first liquid inlet; 4214. a second liquid inlet; 51. a liquid outlet main pipe; 52. a liquid outlet confluence flow channel; 521. a liquid outlet flow passage section; 522. a liquid outlet chamber; 523. a liquid outlet and liquid separation flow passage; 5211. a first liquid outlet flow passage; 5212. a second liquid outlet flow channel; 5213. a first liquid outlet; 5214. a second liquid outlet; 6. and (4) a box body.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
As shown in fig. 1, with reference to fig. 2 to 7, an embodiment of the present invention discloses a battery module with a heat dissipation buffer structure, which includes a battery core module 1, a bottom liquid cooling assembly 2, and a side liquid cooling assembly 3.
The battery cell module 1 comprises a plurality of single battery cells 11, and the single battery cells 11 are square aluminum shell lithium batteries. A plurality of monomer electricity core 11 arrange along its length direction and width direction array, and in this embodiment, the thickness direction also can be called as to the width direction of monomer electricity core 11, and big face is called as to 11 thickness direction's of monomer electricity core two faces, and the one side that utmost point post was kept away from to monomer electricity core 11 is 11 bottom surfaces of monomer electricity core, and 11 quantity settings of monomer electricity core are decided by battery module size.
The 2 levels of end liquid cooling subassembly set up in 1 bottom surface of electric core module to contact with 11 bottom surfaces of monomer electricity core, be used for realizing cooling heat dissipation to 11 bottom surfaces of monomer electricity core. The side liquid cooling assembly 3 is arranged between the large surface and the single surface of the single battery cell 11, and is used for cooling and radiating the large surface of the single battery cell 11.
In the prior art, in order to realize the heat dissipation of the bottom surface and the large surface of the single battery cell 11, liquid cooling plates are respectively arranged on the bottom surface of the single battery cell 11 and the side surface of the single battery cell 11, although the heat exchange efficiency of the battery module is improved in the mode, the liquid cooling plates belong to the whole plate setting and have no compressibility, the expansion force generated when the single battery cell 11 expands cannot be absorbed, although buffer parts can be respectively arranged on the two sides of the liquid cooling plates between the single battery cells 11, the heat dissipation and the buffering are realized by adopting the mode, some problems exist, on one hand, buffer parts are additionally arranged on the two sides of the liquid cooling plates, so that the gap between the single battery cells is increased, the energy density of the battery module is reduced, on the other hand, the liquid cooling plates carry out the heat exchange between the buffer parts and the large surface of the single battery cells, the buffer parts participate in the heat transfer, and the liquid cooling efficiency of the liquid cooling plates is reduced.
Therefore, in order to improve the heat exchange efficiency of the battery module and solve the problem of expansion of the battery module, the embodiment of the invention adopts the following technical scheme.
Specifically, the base liquid cooling subassembly 2 in this embodiment includes a plurality of first liquid cooling pipe fittings 20 that contact with monomer electricity core 11 bottom surface, and a plurality of first liquid cooling pipe fittings 20 establish ties in proper order along its radial direction, as some preferred embodiments, can establish ties through articulated mode between each first liquid cooling pipe fitting 20, and the length direction of first liquid cooling pipe fitting 20 flushes with monomer electricity core 11 length direction, makes base liquid cooling subassembly 2 length direction flush with electric core module 1 length direction from this. In this embodiment, first liquid cooling pipe fitting 20 is inside to be seted up along its length direction and to link up first liquid cooling passageway 201 of first liquid cooling pipe fitting 20, and first liquid cooling passageway 201 is used for the circulation to let in the coolant liquid, sets up the base liquid cooling subassembly 2 of constituteing by many first liquid cooling pipe fittings 20 through at 1 bottom surface level of electric core module, can make 1 bottom surface of electric core module form many straight runners, comes to let in the coolant liquid in step for 1 bottom surface of whole electric core module, realizes cooling heat dissipation to monomer electric core 11 bottom surface.
In this embodiment, a group of side liquid cooling assemblies 3 is disposed on a large surface of each single battery cell 11, specifically, two groups of side liquid cooling assemblies 3 are disposed between two adjacent single battery cells 11, each group of side liquid cooling assemblies is in contact with a large surface of one single battery cell 11, the side liquid cooling assemblies 3 of this embodiment include a plurality of second liquid cooling pipe fittings 30 in contact with a large surface of each single battery cell 11, the plurality of second liquid cooling pipe fittings 30 are sequentially connected in series along a radial direction thereof, and a length direction of each second liquid cooling pipe fitting 30 is flush with a length direction of the first liquid cooling pipe fitting 20; second liquid cooling pipe fitting 30 is inside to be seted up along its length direction and to link up second liquid cooling passage 301 of second liquid cooling pipe fitting 30, and second liquid cooling passage 301 is used for the circulation to let in the coolant liquid. Through set up the base liquid cooling subassembly 2 of constituteing by many second liquid cooling pipe fittings 30 on 11 big faces of monomer electric core, can make 11 big faces of monomer electric core go up and form many straight runners, come to let in the coolant liquid in the second liquid cooling pipe fittings 30 to 11 big faces of monomer electric core in step, realize cooling heat dissipation to 11 big faces of monomer electric core.
Through the setting of side liquid cooling subassembly 3 and base liquid cooling subassembly 2 for liquid cooling heat dissipation can all be realized to monomer electric core 11's big face and bottom surface, improves electric core module 1's cooling radiating efficiency.
In addition, the plurality of first liquid cooling pipe fittings 20 are sequentially hinged and connected in series along the radial direction of the first liquid cooling pipe fittings, and the plurality of second liquid cooling pipe fittings 30 are sequentially hinged and connected in series along the radial direction of the second liquid cooling pipe fittings, so that on one hand, the length of the side liquid cooling assembly 3 and the length of the bottom liquid cooling assembly 2 can be adjusted, the battery module can be installed in battery modules with different sizes, and the battery module is flexible, variable and high in operability; on the other hand, each liquid cooling pipe fitting is respectively introduced with cooling liquid, so that the side liquid cooling assembly 3 and the bottom liquid cooling assembly 2 form a straight runner structure, and the cooling liquid is synchronously introduced into the plurality of liquid cooling pipe fittings, so that the large surface and the bottom surface of the single battery cell 11 can be synchronously cooled, and the heat exchange efficiency of the unit area of the surface of the single battery cell 11 is improved. .
In order to realize the expansion of the cell core 11, the expansion force can be absorbed, and the scheme adopted by the embodiment is that the first liquid cooling pipe 20 and the second liquid cooling pipe 30 are made of elastic materials, specifically, foamed aluminum materials are adopted, and the materials have certain elastic deformation and good heat conduction performance. When the single battery cell 11 is expanded due to heat generation, the liquid cooling pipe fittings are compressed, and the expansion force of the single battery cell 11 is buffered and absorbed through the deformation of the liquid cooling pipe, specifically, the second liquid cooling pipe fitting 30 can absorb the expansion force in the thickness direction of the single battery cell 11, and the first liquid cooling pipe fitting 20 can absorb the expansion force in the height direction of the single battery cell 11.
This embodiment is through setting up side liquid cooling subassembly 3 and base liquid cooling subassembly 2 on electric core module 1 to specifically constitute through the liquid cooling pipe fitting that has the elastic material and survey liquid cooling subassembly and base liquid cooling subassembly 2, realized from this that heat dissipation buffer structure is in the radiating while to battery module, also can play the effect of giving the buffering when battery module inflation.
In the present embodiment, in order to realize that the first liquid-cooling pipe 20 performs the function of absorbing expansion force while cooling and radiating the bottom surface of the unit cell 11. The first liquid cooling pipe member 20 is structurally provided in the present embodiment.
Specifically, the first fluid-cooled tube member 20 has a substantially tubular outer contour with a wall thickness of about 0.1mm to about 0.2mm. Under the state is dissected at first liquid cooling pipe fitting 20 cross section, it includes first connecting portion 202, first contact site 203 and first elasticity portion 204, first connecting portion 202 is transversal to personally submit the door style of calligraphy form, the outer top surface of first connecting portion 202 is connected with monomer electricity core 11 bottom surface, from this setting, whole electric core module 1 that makes is back in the inlet box 6, be planar structure through first connecting portion 202 top surface, come with the contact of electric core module 1 bottom surface, guarantee that first liquid cooling pipe fitting 20 and the contact of electric core module 1 bottom surface are stable. The arc form is personally submitted in the cross section of first contact site 203, and first contact site 203 outer wall is used for contacting with the 6 bottom surfaces of box of installation battery module, and back in electric core module 1 income box 6 can compress box 6 through first contact site 203, makes it have certain compressive deformation, provides certain displacement space for monomer electric core 11 collides in the direction of height simultaneously. Two free ends of the first connecting portion 202 correspond to two free ends of the first contact portion 203, the two free ends of the first connecting portion 202 are connected to the two free ends of the first contact portion 203 through a first elastic portion 204, and the first elastic portion 204 is recessed toward the inside of the first liquid cooling channel 201. When the monomer battery cell 11 expands, the monomer battery cell 11 compresses the first connecting portion 202, the first connecting portion 202 compresses the first elastic portion 204 downwards, and the first elastic portion 204 compresses and deforms to reduce the compression deformation of the first contact portion 203, so that the cross section cotton knot undersize of the first liquid cooling pipe fitting 20 is avoided, the flow of the cooling liquid introduced into the first liquid cooling pipe fitting 20 is influenced, and the cooling heat dissipation of the bottom surface of the battery cell module 1 is increased.
Note that the expansion of the unit cell 11 is usually in the thickness direction of the unit cell 11, and the expansion force in the height direction of the unit cell 11 is small.
In the present embodiment, in order to realize that the second liquid-cooled pipe 30 performs the function of absorbing the expansion force while cooling and radiating the large surface of the unit cell 11. The present embodiment is structured with the second liquid-cooled piping 30.
Specifically, two sets of side liquid cooling subassemblies 3 between two adjacent monomer electric cores 11 align each other, realize from this that two sets of side liquid cooling subassemblies are connected each other stably, and each liquid cooling subassembly is respectively to the 11 big faces of corresponding monomer electric cores cooling heat dissipation simultaneously, and the influence is less each other.
In the present embodiment, the second liquid-cooled tubular member 30 has an overall outer contour similar to a tubular shape with a wall thickness of 0.1mm to 0.2mm. In the cross-sectional cut state of the second liquid-cooled pipe 30, the second liquid-cooled pipe 30 includes a second connection portion 302, a second contact portion 303, and a second elastic portion 304.
The cross section of second connecting portion 302 is personally submitted the door style of calligraphy form, two second connecting portion 302 interconnect between two adjacent monomer electricity cores 11, is the external plane of second connecting portion 302 and laminates each other specifically, guarantees that connection structure is stable between two sets of side liquid cooling subassemblies 3. The cross section of the second contact part 303 is arc-shaped, the outer wall of the second contact part 303 contacts with the large surface of the single battery cell 11, two free ends of the second connection part 302 correspond to two free ends of the second contact part 303, the two free ends of the second connection part 302 are connected with the two free ends of the second contact part 303 through a second elastic part 304, and the second elastic part 304 is recessed towards the inside of the second liquid cooling channel 301. Through making second contact site 303 on the second liquid cooling pipe fitting 30 and monomer electricity core 11 big face contact, when monomer electricity core 11 formed electric core module 1, can exert certain pre-pressure to second contact site 303, make the surface warp, increase the area of contact on second contact site 303 and monomer electricity core 11 surface, improve the heat exchange efficiency of second liquid cooling pipe fitting 30 to monomer electricity core 11 big face, when monomer electricity core 11 inflation, pressure is big more, the degree of flattening is big more to second contact site 303 deformation, further improve the area of contact of second contact site 303 and monomer electricity core 11 big face, thereby improve heat exchange efficiency. In this embodiment, the arrangement of the second elastic portion 304 may further improve the buffering and absorption of the expansion force of the single battery cell 11 during the compression process.
In order to realize the serial connection of the plurality of first liquid-cooling pipes 20, the present embodiment provides a plurality of pairs of first hinge eyes 205 and second hinge eyes 206 along the length direction of the first liquid-cooling pipes 20. The first hinge lug 205 is fixedly arranged on one side of the first connecting portion 202 in the width direction, the second hinge lug 206 is fixedly arranged on the other side of the first connecting portion 202 in the width direction, and the first hinge lug 205 and the second hinge lug 206 between two adjacent first liquid cooling pipe fittings 20 are hinged through a hinge shaft. From this setting, monomer electricity core 11 is when the inflation, and most bulging force absorbs through first contact site 203 and first elasticity portion 204, avoids first connecting portion 202 to take place the displacement volume when absorbing bulging force to guarantee that first hinge ear 205 and second hinge ear 206 do not basically take place the displacement and change in vertical direction, guarantee a plurality of first liquid cooling pipe fittings 20 and establish ties in order in the horizontal direction.
In order to realize the serial connection of a plurality of second liquid-cooled pipe fittings 30, the second liquid-cooled pipe fitting 30 further includes a plurality of third hinge eyes 305 and fourth hinge eyes 306 which are arranged in pairs along the length direction of the second liquid-cooled pipe fitting 30, the third hinge eyes 305 are fixedly arranged on one side of the width direction of the second connecting portion 302, the fourth hinge eyes 306 are fixedly arranged on the other side of the width direction of the second connecting portion 302, and the third hinge eyes 305 and the fourth hinge eyes 306 between two adjacent second liquid-cooled pipe fittings 30 are hinged through hinge shafts. From this setting, monomer electricity core 11 is when the inflation, and most bulging force absorbs through second contact site 303 and second elasticity portion 304, avoids second connecting portion 302 to take place the displacement volume when absorbing bulging force to guarantee that third hinge ear 305 and fourth hinge ear 306 basically do not take place the displacement and change in vertical direction, guarantee that a plurality of first liquid cooling pipe fittings 20 establish ties in order in the horizontal direction.
In addition, through articulated the series connection between the liquid cooling pipe fitting for form fit clearance between the liquid cooling pipe fitting, can realize the air heat dissipation in the clearance between the liquid cooling pipe fitting on the one hand, on the other hand, when 11 extrusion liquid cooling pipe fittings of monomer electricity core, the clearance between the liquid cooling pipe fitting can provide the liquid cooling pipe expansion displacement volume.
As some preferred embodiments, in order to achieve interconnection between the side liquid cooling assemblies 3 and the bottom liquid cooling assemblies 2 on the cell module 1, in this embodiment, a set of bottom liquid cooling assemblies 2 is disposed on the bottom surface of each single cell 11, and thus, a liquid cooling assembly enclosure is disposed between the large surface and the bottom surface of each single cell 11, and in order to achieve interconnection between the liquid cooling assemblies on the outer surfaces of the single cells, in this embodiment, the shape and size of the first liquid cooling pipe 20 are the same as those of the second liquid cooling pipe 30, and thus, the side liquid cooling assemblies 3 and the bottom liquid cooling assemblies 2 are different in the number of the liquid cooling pipes, and by respectively connecting the side liquid cooling assemblies 3 on the two large surfaces of the single cells 11 in series with the bottom liquid cooling assemblies 2 on the bottom surfaces of the single cells 11, series connection of three sets of liquid cooling assemblies on the outer surfaces of the single cells 11 can be achieved, and series connection of two sets of side liquid cooling assemblies 3 between two adjacent single cells 11 is far away from one end of the bottom liquid cooling assemblies 2. Therefore, all the liquid cooling assemblies can be connected in series, the whole liquid cooling plate can be unfolded and arranged flatly, and the function of the liquid cooling plate is consistent with that of a conventional liquid cooling plate. The shape of the cell can also be folded into an S shape, and the cell covers the large surface and the bottom surface of the single cell 11.
In the above embodiment, first liquid cooling pipe fitting 20 and second liquid cooling pipe fitting 30 structure are the same, can be through setting up many liquid cooling pipe fittings, come corresponding articulated series connection to become required liquid cooling subassembly according to monomer electricity core 11 size, make the liquid cooling subassembly form and be similar to the liquid cooling plate structure, and these liquid cooling pipe fittings adopt the foamed aluminum material simultaneously, in to the battery module radiating, also can play the effect of giving the buffering when the battery module inflation.
In this embodiment, the liquid cooling pipes in the liquid cooling measuring assembly and the bottom liquid cooling assembly 2 are in a direct flushing cooling liquid mode, that is, one end of each liquid cooling pipe is fed with liquid, and the other end of each liquid cooling pipe is discharged with liquid, in order to realize synchronous feeding and discharging of cooling liquid of all the liquid cooling pipes, in this embodiment, a liquid feeding confluence plate 4 and a liquid discharging confluence plate 5 are respectively arranged at two ends of the electrical core module 1 in the length direction, as shown in fig. 8-13, a liquid feeding confluence flow channel 42 is arranged in the liquid feeding confluence plate 4, a liquid feeding header pipe 41 connected with the liquid feeding confluence flow channel 42 is arranged on the liquid feeding confluence plate 4, and a first liquid feeding joint 207 and a second liquid feeding joint 307 are respectively connected with the liquid feeding confluence flow channel 42; a liquid outlet converging flow passage 52 is arranged in the liquid outlet converging plate 5, a liquid outlet main pipe 51 connected with the liquid outlet converging flow passage 52 is arranged on the liquid outlet converging plate 5, and the first liquid outlet joint 208 and the second liquid outlet joint 308 are respectively connected with the liquid outlet converging flow passage 52. Therefore, two ends of each liquid cooling pipe fitting are respectively connected with the liquid inlet converging flow passage 42 in the liquid inlet converging plate 4 and the liquid outlet converging flow passage 52 in the liquid outlet converging plate 5, so that the same flow of cooling liquid entering and exiting each liquid cooling pipe fitting is realized, and the heat exchange balance of each area on the surface of the single battery cell 11 is improved.
Concretely, feed liquor flow channel 42 in this embodiment includes a plurality of feed liquor flow channel sections 421, feed liquor flow channel section 421 sets up along 4 length direction intervals of feed liquor flow convergence board, each feed liquor flow channel section 421 is corresponding with the 11 sides of monomer electric core of 1 length direction one end of electric core module respectively, feed liquor flow channel 42 still includes feed liquor cavity 422 and divides liquid flow channel 423 with a plurality of feed liquors that feed liquor cavity 422 is parallelly connected, feed liquor cavity 422 is connected with feed liquor header pipe 41, each feed liquor divides liquid flow channel 423 to be linked together with feed liquor flow channel section 421 respectively, from this setting, can let in the coolant liquid in to feed liquor cavity 422 through feed liquor header pipe 41, the coolant liquid gets into corresponding feed liquor flow channel section 421 through each divides liquid flow channel respectively.
Second liquid inlet flow channels 4212 are respectively arranged on two sides of the liquid inlet flow channel section 421 in the width direction, first liquid inlet flow channels 4211 are horizontally arranged at the bottom of the liquid inlet flow channel section 421, first liquid inlets 4213 connected with the first liquid inlet joints 207 are formed in the surfaces of the corresponding liquid inlet confluence plates 4 on the first liquid inlet flow channels 4211, and second liquid inlets 4214 connected with the second liquid inlet joints 307 are formed in the surfaces of the corresponding liquid inlet confluence plates 4 on the second liquid inlet flow channels 4212. From this setting, after entering into inlet flow channel section 421, the coolant liquid flows into first inlet flow channel 4211 and two second inlet flow channels 4212 respectively, and the coolant liquid rethread first inlet 4213 flows into first liquid cooling pipe fitting 20 through first liquid inlet joint 207, and the coolant liquid flows into second liquid cooling pipe fitting 30 through second inlet 4214 through second liquid inlet joint 307 simultaneously to realize that the coolant liquid flow that all liquid cooling pipe fittings got into is unanimous, guarantee that each regional heat transfer of monomer electricity core 11 is even.
In order to ensure that the flow rates of the cooling liquid flowing out of the liquid cooling pipe fittings are consistent, the liquid outlet confluence flow channel 52 in this embodiment includes a plurality of liquid outlet flow channel segments 521, the liquid outlet flow channel segments 521 are arranged at intervals along the length direction of the liquid outlet confluence plate 5, each liquid outlet flow channel segment 521 corresponds to the side face of the single battery cell 11 at one end of the battery cell module 1 in the length direction, the liquid outlet confluence flow channel 52 further includes a liquid outlet cavity 522 and a plurality of liquid outlet distribution flow channels 523 connected in parallel with the liquid outlet cavity 522, the liquid outlet cavity 522 is connected with the liquid outlet header pipe 51, and each liquid outlet distribution flow channel 523 is communicated with the liquid outlet flow channel segment 521. The two sides of the liquid outlet flow passage section 521 in the width direction are respectively provided with a second liquid outlet flow passage 5212, the bottom of the liquid outlet flow passage section 521 is horizontally provided with a first liquid outlet flow passage 5211, the surface of the liquid outlet bus plate 5 corresponding to the first liquid outlet flow passage 5211 is provided with a first liquid outlet 5213 connected with the first liquid outlet connector 208, and the surface of the liquid outlet bus plate 5 corresponding to the second liquid outlet flow passage 5212 is provided with a second liquid outlet 5214 connected with the second liquid outlet connector 308. Therefore, the cooling liquid flowing out of the first liquid cooling pipe 20 enters the first liquid outlet flow channel 5211 through the first liquid outlet joint 208 via the first liquid outlet 5213, the cooling liquid flowing out of the second liquid cooling pipe 30 enters the second liquid outlet flow channel 5212 through the second liquid outlet joint 308 via the second liquid outlet 5214, the cooling liquid in the first liquid outlet flow channel 5211 and the cooling liquid in the second liquid outlet flow channel 5212 enter the liquid outlet liquid separating flow channel 523 via the liquid outlet flow channel section 521, then the high-temperature cooling liquid flowing out of each liquid outlet liquid separating flow channel 523 converges into the liquid outlet chamber 522, and finally is discharged through the liquid outlet main pipe 51, so that the liquid outlet amount of each liquid cooling pipe is consistent, the uniform inlet and outlet flow of each liquid cooling pipe is realized, and the uniform heat exchange of the battery module is ensured.
The invention also discloses a battery pack, which comprises a battery module with the heat dissipation buffer structure and a box body 6 for installing the battery module.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A battery module with a heat dissipation buffer structure comprises a battery core module (1), a bottom liquid cooling assembly (2) and a side liquid cooling assembly (3), wherein the battery core module (1) comprises a plurality of single battery cores (11), the single battery cores (11) are arranged in an array manner, the bottom liquid cooling assembly (2) is horizontally arranged on the bottom surface of the battery core module (1) and is in contact with the bottom surfaces of the single battery cores (11), and the side liquid cooling assembly (3) is arranged between the large surface and the single surface of each single battery core (11);
the method is characterized in that: the bottom liquid cooling assembly (2) comprises a plurality of first liquid cooling pipe fittings (20) which are contacted with the bottom surfaces of the monomer electric cores (11), the plurality of first liquid cooling pipe fittings (20) are sequentially connected in series along the radial direction of the first liquid cooling pipe fittings, the length direction of the first liquid cooling pipe fittings (20) is flush with the length direction of the monomer electric cores (11), the first liquid cooling pipe fittings (20) are made of elastic materials, first liquid cooling channels (201) penetrating through the first liquid cooling pipe fittings (20) are formed in the first liquid cooling pipe fittings (20) along the length direction of the first liquid cooling pipe fittings, and the first liquid cooling channels (201) are used for circularly introducing cooling liquid;
it is a plurality of all be provided with a set of side liquid cooling subassembly (3) on monomer electric core (11) big face, side liquid cooling subassembly (3) include a plurality ofly with second liquid cooling pipe fitting (30) that monomer electric core (11) big face contacted, it is a plurality of second liquid cooling pipe fitting (30) are followed the big face width direction of monomer electric core (11) is parallel arrangement in proper order, second liquid cooling pipe fitting (30) are the elasticity material, second liquid cooling pipe fitting (30) are inside to be seted up second liquid cooling passageway (301) that link up second liquid cooling pipe fitting (30) along its length direction, second liquid cooling passageway (301) are used for the circulation to let in the coolant liquid.
2. The battery module with the heat dissipation buffer structure as recited in claim 1, wherein: first liquid cooling pipe fitting (20) include first connecting portion (202), first contact site (203) and first elastic component (204), and first connecting portion (202) and first contact site (203) set up relatively, first connecting portion (202) outer top surface with monomer electricity core (11) bottom surface is connected, the one side that first connecting portion (202) were kept away from in first contact site (203) is the arc form, first contact site (203) outer wall is used for contacting with box (6) bottom surface of installation battery module, is connected through first elastic component (204) between first connecting portion (202) and the first contact site (203), and first elastic component (204) are sunken to first liquid cooling passageway (201) inside.
3. The battery module with the heat dissipation buffer structure as recited in claim 2, wherein: two sets of side liquid cooling subassemblies (3) between two adjacent monomer electric cores (11) align each other, second liquid cooling pipe fitting (30) are including second connecting portion (302), second contact site (303) and second elasticity portion (304), two second liquid cooling pipe fittings (30) on the horizontal direction between two adjacent monomer electric cores (11) are through second connecting portion (302) interconnect, second connecting portion (302) set up with second contact site (303) relatively, the one side that second connecting portion (302) were kept away from in second contact site (303) is the arc form, second contact site (303) outer wall and monomer electric core (11) large face contact, be connected through second elasticity portion (304) between second connecting portion (302) and the second contact site (303), second elasticity portion (304) are sunken to second liquid cooling passageway (301) inside.
4. The battery module with the heat dissipation buffer structure as recited in claim 3, wherein: the first liquid cooling pipe fitting (20) further comprises a plurality of first hinge lugs (205) and second hinge lugs (206) which are arranged in pairs along the length direction of the first liquid cooling pipe fitting (20), the first hinge lugs (205) are fixedly arranged on one side of the width direction of the first connecting part (202), the second hinge lugs (206) are fixedly arranged on the other side of the width direction of the first connecting part (202), and the first hinge lugs (205) and the second hinge lugs (206) between two adjacent first liquid cooling pipe fittings (20) are hinged through hinge shafts; second liquid cooling pipe fitting (30) still include a plurality of third hinge ear (305) and fourth hinge ear (306) that set up in pairs along second liquid cooling pipe fitting (30) length direction, third hinge ear (305) are fixed to be set up in second connecting portion (302) width direction one side, fourth hinge ear (306) are fixed to be set up at second connecting portion (302) width direction opposite side, adjacent two third hinge ear (305) and fourth hinge ear (306) between second liquid cooling pipe fitting (30) carry out the hinge joint through the hinge.
5. The battery module with the heat dissipation buffer structure as recited in claim 1, wherein: all be provided with a set of base liquid cooling subassembly (2) on every monomer electric core (11) bottom surface, the shape size of first liquid cooling pipe fitting (20) is the same with the shape size of second liquid cooling pipe fitting (30), side liquid cooling subassembly (3) on two macrosurfaces of monomer electric core (11) respectively with base liquid cooling subassembly (2) of monomer electric core (11) bottom surface are established ties, adjacent two the one end of base liquid cooling subassembly (2) is kept away from in two sets of side liquid cooling subassemblies (3) between monomer electric core (11) is established ties.
6. The battery module with the heat dissipation buffer structure as recited in claim 1, wherein: a first liquid inlet joint (207) and a first liquid outlet joint (208) which are connected with the first liquid cooling channel (201) are respectively arranged at two ends of the first liquid cooling pipe (20) in the length direction; and a second liquid inlet joint (307) and a second liquid outlet joint (308) which are connected with the second liquid cooling channel (301) are respectively arranged at two ends of the second liquid cooling pipe fitting (30) in the length direction.
7. The battery module with the heat dissipation buffer structure as recited in claim 6, wherein: the liquid inlet collecting plate (4) and the liquid outlet collecting plate (5) are respectively arranged at two ends of the battery cell module (1) in the length direction, a liquid inlet converging flow channel (42) is arranged in the liquid inlet collecting plate (4), a liquid inlet header pipe (41) connected with the liquid inlet converging flow channel (42) is arranged on the liquid inlet collecting plate (4), and a first liquid inlet connector (207) and a second liquid inlet connector (307) are respectively connected with the liquid inlet converging flow channel (42); a liquid outlet confluence flow channel (52) is arranged in the liquid outlet confluence plate (5), a liquid outlet main pipe (51) connected with the liquid outlet confluence flow channel (52) is arranged on the liquid outlet confluence plate (5), and the first liquid outlet joint (208) and the second liquid outlet joint (308) are respectively connected with the liquid outlet confluence flow channel (52).
8. The battery module with the heat dissipation buffer structure as recited in claim 7, wherein: feed liquor converging flow channel (42) includes a plurality of feed liquor flow channel sections (421), and is a plurality of feed liquor flow channel sections (421) set up along feed liquor convergence plate (4) length side interval, each feed liquor flow channel section (421) respectively with monomer electric core (11) side of electric core module (1) length direction one end corresponding, feed liquor converging flow channel (42) still include feed liquor cavity (422) and divide liquid flow channel (423) with a plurality of feed liquors of feed liquor cavity (422) parallelly connected, feed liquor cavity (422) with inlet manifold (41) are connected, each divide liquid flow channel (423) to be linked together with feed liquor flow channel section (421) respectively, feed liquor flow channel section (421) width direction both sides are provided with second feed liquor flow channel (4212) respectively, feed liquor flow channel section (421) bottom level is provided with first feed liquor flow channel (4211), first feed liquor inlet (4213) that is connected with first feed liquor joint (207) is seted up on corresponding feed liquor convergence plate (4) surface on first feed liquor flow channel (4211), second feed liquor flow channel (4212) go up and set up second feed liquor convergence plate (307) surface and be connected with second feed liquor joint (4214).
9. The battery module with the heat dissipation buffer structure as recited in claim 7, wherein: the liquid outlet confluence flow channel (52) comprises a plurality of liquid outlet flow channel sections (521), the liquid outlet flow channel sections (521) are arranged at intervals along the length direction of the liquid outlet confluence plate (5), each liquid outlet flow channel section (521) corresponds to one side face of a single battery cell (11) at one end of the battery cell module (1) in the length direction, the liquid outlet confluence flow channel (52) further comprises a liquid outlet cavity (522) and a plurality of liquid outlet flow channels (523) connected with the liquid outlet cavity (522) in parallel, the liquid outlet cavity (522) is connected with the liquid outlet header pipe (51), each liquid outlet flow channel (523) is communicated with the liquid outlet flow channel section (521), second liquid outlet flow channels (5212) are arranged on two sides of the liquid outlet flow channel section (521) in the width direction, a first liquid outlet flow channel (5211) is horizontally arranged at the bottom of the liquid outlet flow channel section (521), a first liquid outlet (5213) connected with the first liquid outlet joint (208) is arranged on the surface of the liquid outlet plate (5) corresponding to the first liquid outlet flow channel (5211), and a second liquid outlet flow channel (5212) is provided with a second liquid outlet joint (308) connected with the second liquid outlet joint (5214).
10. A battery pack comprising the battery module with the heat dissipation buffer structure as set forth in any one of claims 1 to 9, further comprising a case (6) for mounting the battery module.
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| CN115621622A (en) * | 2022-11-04 | 2023-01-17 | 楚能新能源股份有限公司 | Battery module heat management device, battery module and battery core temperature control method |
| CN116487772A (en) * | 2023-06-21 | 2023-07-25 | 厦门海辰储能科技股份有限公司 | Liquid cooling plate and battery module |
| CN117254154A (en) * | 2023-09-18 | 2023-12-19 | 江阴信邦电子有限公司 | Cooling system for radiating blade battery module |
| CN117276814A (en) * | 2023-11-21 | 2023-12-22 | 天津力神电池股份有限公司 | Busbar assembly, battery module and battery pack |
| CN117832686A (en) * | 2024-02-02 | 2024-04-05 | 深圳永泰数能科技有限公司 | Novel energy storage system based on liquid cooling and phase change material composite heat dissipation and control method |
| CN118380687A (en) * | 2024-06-24 | 2024-07-23 | 南京创源动力科技有限公司 | Battery pack and electric equipment |
| WO2024156101A1 (en) * | 2023-01-28 | 2024-08-02 | 宁德时代新能源科技股份有限公司 | Battery and electric device |
| WO2024192976A1 (en) * | 2023-03-23 | 2024-09-26 | 欣旺达动力科技股份有限公司 | Battery pack and electric device |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013203434A1 (en) * | 2013-02-28 | 2014-08-28 | Robert Bosch Gmbh | Battery for vehicle, has rope extending around protruding attachment elements that are extended between battery modules and cooling plate, where battery modules are alternately guided back and forth and stressed against cooling plate |
| CN207753109U (en) * | 2017-12-26 | 2018-08-21 | 广州小鹏汽车科技有限公司 | A kind of battery liquid cooling pipe mounting device |
| CN209592257U (en) * | 2019-01-14 | 2019-11-05 | 广东合一新材料研究院有限公司 | Cell flexible liquid-cooling heat radiation structure and power supply device |
| CN111987387A (en) * | 2020-08-31 | 2020-11-24 | 合肥工业大学 | University student electric equation battery pack liquid cooling system, battery pack and design method |
| CN113410546A (en) * | 2021-06-18 | 2021-09-17 | 恒大新能源技术(深圳)有限公司 | Battery module and battery pack |
| CN113410538A (en) * | 2021-05-08 | 2021-09-17 | 华南理工大学 | Liquid cooling battery package structure of trompil foamed aluminum heat dissipation runner |
| CN113437414A (en) * | 2021-06-15 | 2021-09-24 | 力神动力电池系统有限公司 | Battery module with heat conduction buffer structure |
| WO2022021065A1 (en) * | 2020-07-28 | 2022-02-03 | 威睿电动汽车技术(宁波)有限公司 | Cell module liquid cooling structure and battery pack using same |
| CN114678625A (en) * | 2022-05-07 | 2022-06-28 | 湖北亿纬动力有限公司 | Flexible liquid cooling device and battery system |
-
2022
- 2022-09-05 CN CN202211080464.9A patent/CN115275435B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013203434A1 (en) * | 2013-02-28 | 2014-08-28 | Robert Bosch Gmbh | Battery for vehicle, has rope extending around protruding attachment elements that are extended between battery modules and cooling plate, where battery modules are alternately guided back and forth and stressed against cooling plate |
| CN207753109U (en) * | 2017-12-26 | 2018-08-21 | 广州小鹏汽车科技有限公司 | A kind of battery liquid cooling pipe mounting device |
| CN209592257U (en) * | 2019-01-14 | 2019-11-05 | 广东合一新材料研究院有限公司 | Cell flexible liquid-cooling heat radiation structure and power supply device |
| WO2022021065A1 (en) * | 2020-07-28 | 2022-02-03 | 威睿电动汽车技术(宁波)有限公司 | Cell module liquid cooling structure and battery pack using same |
| CN111987387A (en) * | 2020-08-31 | 2020-11-24 | 合肥工业大学 | University student electric equation battery pack liquid cooling system, battery pack and design method |
| CN113410538A (en) * | 2021-05-08 | 2021-09-17 | 华南理工大学 | Liquid cooling battery package structure of trompil foamed aluminum heat dissipation runner |
| CN113437414A (en) * | 2021-06-15 | 2021-09-24 | 力神动力电池系统有限公司 | Battery module with heat conduction buffer structure |
| CN113410546A (en) * | 2021-06-18 | 2021-09-17 | 恒大新能源技术(深圳)有限公司 | Battery module and battery pack |
| CN114678625A (en) * | 2022-05-07 | 2022-06-28 | 湖北亿纬动力有限公司 | Flexible liquid cooling device and battery system |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115621622A (en) * | 2022-11-04 | 2023-01-17 | 楚能新能源股份有限公司 | Battery module heat management device, battery module and battery core temperature control method |
| WO2024156101A1 (en) * | 2023-01-28 | 2024-08-02 | 宁德时代新能源科技股份有限公司 | Battery and electric device |
| WO2024192976A1 (en) * | 2023-03-23 | 2024-09-26 | 欣旺达动力科技股份有限公司 | Battery pack and electric device |
| CN116487772A (en) * | 2023-06-21 | 2023-07-25 | 厦门海辰储能科技股份有限公司 | Liquid cooling plate and battery module |
| CN116487772B (en) * | 2023-06-21 | 2023-10-13 | 厦门海辰储能科技股份有限公司 | Liquid cooling plate and battery module |
| CN117254154A (en) * | 2023-09-18 | 2023-12-19 | 江阴信邦电子有限公司 | Cooling system for radiating blade battery module |
| CN117276814A (en) * | 2023-11-21 | 2023-12-22 | 天津力神电池股份有限公司 | Busbar assembly, battery module and battery pack |
| CN117276814B (en) * | 2023-11-21 | 2024-04-19 | 天津力神电池股份有限公司 | Busbar assembly, battery module and battery pack |
| CN117832686A (en) * | 2024-02-02 | 2024-04-05 | 深圳永泰数能科技有限公司 | Novel energy storage system based on liquid cooling and phase change material composite heat dissipation and control method |
| CN118380687A (en) * | 2024-06-24 | 2024-07-23 | 南京创源动力科技有限公司 | Battery pack and electric equipment |
| CN118380687B (en) * | 2024-06-24 | 2024-09-10 | 南京创源动力科技有限公司 | Battery pack and electric equipment |
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