CN116759704B - Battery module support frame, battery module and energy storage device - Google Patents

Battery module support frame, battery module and energy storage device Download PDF

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Publication number
CN116759704B
CN116759704B CN202311039698.3A CN202311039698A CN116759704B CN 116759704 B CN116759704 B CN 116759704B CN 202311039698 A CN202311039698 A CN 202311039698A CN 116759704 B CN116759704 B CN 116759704B
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China
Prior art keywords
limiting holes
battery module
plate
limiting
battery
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Active
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CN202311039698.3A
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Chinese (zh)
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CN116759704A (en
Inventor
周泓宇
刘辰光
楚攀
叶李旺
赵宇
樊晏辰
王统
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Petrochina Shenzhen New Energy Research Institute Co ltd
Petrochina Co Ltd
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Petrochina Shenzhen New Energy Research Institute Co ltd
Petrochina Co Ltd
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Priority to CN202311039698.3A priority Critical patent/CN116759704B/en
Publication of CN116759704A publication Critical patent/CN116759704A/en
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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
    • H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
    • H01M10/643—Cylindrical 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
    • H01M10/653—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
    • H01M10/6554—Rods or plates
    • 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
    • H01M10/659—Means for temperature control structurally associated with the cells by heat storage or buffering, e.g. heat capacity or liquid-solid phase changes or transition
    • 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
    • H01M50/213—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for cells having curved cross-section, e.g. round or elliptic
    • 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 support frame, a battery module and an energy storage device, wherein the battery module support frame comprises: the first supporting component is provided with a plurality of first limiting holes and a plurality of second limiting holes, and the circumference of each first limiting hole is provided with a plurality of second limiting holes; the second supporting component is arranged face to face with the first supporting component, a plurality of third limiting holes and a plurality of fourth limiting holes are formed in the circumferential direction of each third limiting hole, one first limiting hole and one third limiting hole are correspondingly formed, one second limiting hole and one fourth limiting hole are correspondingly formed, and two ends of the battery core are respectively arranged in the corresponding first limiting holes and the corresponding second limiting holes; the heat conduction part is provided with a plurality of, and each heat conduction part's both ends set up respectively in the spacing hole of corresponding second and fourth, and heat conduction part includes heat conduction shell and heat conduction medium, and heat conduction medium is filled to the inside of heat conduction shell, maintains the battery core temperature, makes it continuously be in best working property.

Description

Battery module support frame, battery module and energy storage device
Technical Field
The invention relates to the technical field of energy storage, in particular to a battery module support frame, a battery module and an energy storage device.
Background
Electrochemical energy storage based on lithium batteries has the characteristics of flexibility, controllability, high energy density and the like, and is rapidly developed in the power generation field and the power utilization field. However, conventional lithium ion batteries are very sensitive to temperature changes, and show significant energy and power losses, difficulty in charging, and other problems at low temperatures, and at high temperatures, the degradation of the performance of the lithium battery is aggravated, which seriously affects the safety of the lithium battery in the long-term energy storage process. If the requirement of large-scale energy storage is met, a plurality of battery modules are required to be connected in series and parallel, and each battery module generally needs to contain hundreds of single battery cells.
In the long-term use process of the battery module, the difference of the battery health states (states of health) of different battery cells is increasingly remarkable due to the fact that the local environment temperatures of the battery cells in the battery module are different, so that the inconsistency among the battery cells is remarkably increased, and the efficiency of the whole energy storage system is affected. The prior battery module support mainly uses upper and lower cooling plates or inserts a metal plate in the middle of a battery cell to perform heat dissipation and cooling, but in the long-term use process, heat is difficult to be well conducted to the upper end and the lower end, so that the problem of heat accumulation in the middle of the battery cell is solved.
Based on this, it is highly desirable to realize effective temperature control for the battery cells inside the battery module, so as to solve the problem of higher temperature of the battery cells inside the battery module.
Disclosure of Invention
The invention provides a battery module support frame which can effectively control the temperature of each battery core in a battery module, avoid heat accumulation of each battery core and improve the working efficiency of an energy storage device.
In view of the above, the present invention provides a battery module support frame, which includes: the device comprises a first supporting component, a second supporting component and a heat conducting component, wherein the first supporting component is provided with a plurality of first limiting holes and a plurality of second limiting holes, and the circumference of each first limiting hole is provided with a plurality of second limiting holes; the second supporting component and the first supporting component are arranged face to face, a plurality of third limiting holes and a plurality of fourth limiting holes are formed, a plurality of fourth limiting holes are formed in the circumference of each third limiting hole, the first limiting holes and the third limiting holes are arranged one by one, the second limiting holes and the fourth limiting holes are arranged one by one in a corresponding manner, and two ends of the battery core are respectively arranged in the corresponding first limiting holes and third limiting holes; the heat conduction part is provided with a plurality of, and each heat conduction part's both ends set up respectively in corresponding second spacing hole with fourth spacing hole, heat conduction part includes heat conduction shell and heat conduction medium, heat conduction shell's inside is filled heat conduction medium.
In some alternative embodiments, the first support part includes a first support plate facing the second support part, a first cooling plate disposed on a surface of the first support plate facing away from the second support part, and a first fixing element through which the first support plate and the first cooling plate are connected.
In some optional embodiments, the first support plate is provided with first mounting holes uniformly in a circumferential direction, the first cooling plate is provided with second mounting holes uniformly in a circumferential direction, the first mounting holes and the second mounting holes are provided in one-to-one correspondence, and the first fixing element penetrates through the first mounting holes and the second mounting holes which are provided correspondingly.
In some alternative embodiments, the first cooling plate includes a first cooling layer and a first insulating layer, and the first support plate, the first cooling layer, and the first insulating layer are sequentially stacked; the first cooling layer is made of any one of copper, aluminum and titanium alloy; the first insulating layer is made of any one of epoxy resin, polyvinyl chloride, crosslinked polyethylene, polyurethane, polytetrafluoroethylene and polyester.
In some optional embodiments, the material of the first support plate is an insulating and heat-conducting material, and the insulating and heat-conducting material is any one of polyphenyl ether, polybutylene terephthalate, polyoxymethylene, a mixture of polycarbonate and acrylonitrile-butadiene-styrene copolymer, and a mixture of polycarbonate and polybutylene terephthalate.
In some optional embodiments, a plurality of the first limiting holes and a plurality of the second limiting holes are all disposed on the first support plate; the plurality of first limiting holes are arrayed in the first supporting plate; or the first limiting holes are surrounded to form a plurality of concentric rings, and the radius of the rings is gradually increased from inside to outside.
In some alternative embodiments, the second support part includes a second support plate facing the first support part, a second cooling plate provided on a surface of the second support plate facing away from the first support part, and a second fixing element through which the second support plate and the second cooling plate are connected.
In some optional embodiments, the second fixing element includes a third mounting hole uniformly disposed in a circumferential direction of the second support plate, a fourth mounting hole uniformly disposed in a circumferential direction of the second cooling plate, the third mounting hole and the fourth mounting hole are disposed in one-to-one correspondence, and the second fixing element penetrates through the correspondingly disposed third mounting hole and fourth mounting hole.
In some alternative embodiments, the second cooling plate includes a second cooling layer and a second insulating layer, and the second support plate, the second cooling layer, and the second insulating layer are sequentially stacked; the second cooling layer is made of any one of copper, aluminum and titanium alloy; the second insulating layer is made of any one of epoxy resin, polyvinyl chloride, crosslinked polyethylene, polyurethane, polytetrafluoroethylene and polyester.
In some optional embodiments, the material of the second support plate is an insulating and heat-conducting material, and the insulating and heat-conducting material is any one of polyphenyl ether, polybutylene terephthalate, polyoxymethylene, a mixture of polycarbonate and acrylonitrile-butadiene-styrene copolymer, and a mixture of polycarbonate and polybutylene terephthalate.
In some optional embodiments, a plurality of the third limiting holes and a plurality of the fourth limiting holes are all disposed on the second support plate; the plurality of third limiting holes are arrayed in the second supporting plate; or the third limiting holes are surrounded to form a plurality of concentric rings, and the radius of the rings is gradually increased from inside to outside.
In some alternative embodiments, the thermally conductive shell is made of resin.
In some alternative embodiments, the thermally conductive shell has a cross-sectional shape that is any one of circular, elliptical, and regular polygonal.
In some optional embodiments, the material of the heat conducting medium is an organic low-temperature phase-changing material, and the organic low-temperature phase-changing material is a mixed material of expanded graphite and paraffin.
In some optional embodiments, the ratio between the graphite and the paraffin is 1:9-1:2.
In some alternative embodiments, the heat-conducting medium is an inorganic low-temperature phase-change material, and the inorganic low-temperature phase-change material is calcium chloride hexahydrate crystal salt or a mixed material of magnesium nitrate hexahydrate and calcium nitrate tetrahydrate.
In some optional embodiments, the ratio between the magnesium nitrate hexahydrate and the calcium nitrate tetrahydrate is 1:9-2:3.
In some alternative embodiments, the second support member is provided with a plurality of buckles, and a plurality of the buckles are uniformly arranged in the circumferential direction of the second support member.
On the other hand, the invention also provides a battery module, which comprises a plurality of battery cells and the battery module support frame.
In one aspect, the invention further provides an energy storage device, which comprises a plurality of battery modules, wherein the battery modules are the battery modules; the plurality of battery modules are arranged in an array in the length direction, the width direction and the height direction of each battery module.
Compared with the prior art, the invention has the following technical effects:
the invention provides a battery module support frame, comprising: the battery pack comprises a battery pack, a first supporting component, a second supporting component and a heat conducting component, wherein the first supporting component is provided with a plurality of first limiting holes and a plurality of second limiting holes, the circumference of each first limiting hole is provided with a plurality of second limiting holes, the second supporting component and the first supporting component are arranged face to face, the second supporting component is provided with a plurality of third limiting holes and a plurality of fourth limiting holes, the circumference of each third limiting hole is provided with a plurality of fourth limiting holes, the first limiting holes and the third limiting holes are arranged one by one, the second limiting holes and the fourth limiting holes are arranged one by one, two ends of the battery pack are respectively arranged in the corresponding first limiting holes and the third limiting holes, the heat conducting component is provided with a plurality of heat conducting components, two ends of each heat conducting component are respectively arranged in the corresponding second limiting holes and the fourth limiting holes, the heat conducting component comprises a heat conducting shell and a heat conducting medium, the heat conducting shell is internally filled with the heat conducting medium, and the heat conducting medium is used for evacuating middle part of the battery pack, so that a plurality of battery cores in the battery pack are in an optimal working temperature interval, and the battery core temperature is kept continuously in optimal working performance.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
fig. 1 is a schematic structural diagram of a battery module support frame according to an embodiment of the invention;
fig. 2 is a schematic diagram of a battery cell arrangement structure according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a heat conducting component according to an embodiment of the present invention;
FIG. 4 is a schematic view of a lower support member according to an embodiment of the present invention;
fig. 5 is a schematic side view of a battery module support according to an embodiment of the invention;
FIG. 6 is a schematic view of a connection structure between a first support plate and a first cooling plate according to an embodiment of the present invention;
fig. 7 is a schematic diagram of a connection structure between a second support plate and a second cooling plate according to an embodiment of the invention.
Wherein, the correspondence between the reference numerals and the component names in fig. 1 to 7 is:
1-a first support member; 11-a first limiting hole; 12-a second limiting hole; 13-a first support plate; 14-a first cooling plate; 15-a first fixing element; 2-a second support member; 21-a third limiting hole; 22-fourth limiting holes; 23-a second support plate; 24-a second cooling plate; 25-a second fixing element; 26-a buckle; 3-a heat conductive member; a-cell.
Detailed Description
In order that the above-recited objects, features and advantages of the present invention will be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those described herein, and therefore the scope of the present invention is not limited to the specific embodiments disclosed below.
The invention relates to the technical field of energy storage, in particular to a battery module support frame, a battery module and an energy storage device.
Electrochemical energy storage based on lithium batteries has the characteristics of flexibility, controllability, high energy density and the like, and is rapidly developed in the power generation field and the power utilization field. However, conventional lithium ion batteries are very sensitive to temperature changes, and show significant energy and power losses, difficulty in charging, and other problems at low temperatures, and at high temperatures, the degradation of the performance of the lithium battery is aggravated, which seriously affects the safety of the lithium battery in the long-term energy storage process. If the requirement of large-scale energy storage is met, a plurality of battery modules are required to be connected in series and parallel, and each battery module generally needs to contain hundreds of single battery cells.
In the long-term use process of the battery module, the difference of the battery health states (Stateofhealth) of different battery cells is increasingly remarkable due to the fact that the local environment temperatures of the battery cells in the battery module are different, so that the inconsistency among the battery cells is remarkably increased, and the efficiency of the whole energy storage system is affected. The prior battery module support mainly uses upper and lower cooling plates or inserts a metal plate in the middle of a battery cell to perform heat dissipation and cooling, but in the long-term use process, heat is difficult to be well conducted to the upper end and the lower end, so that the problem of heat accumulation in the middle of the battery cell is solved.
Based on this, it is highly desirable to realize effective temperature control for the battery cells inside the battery module, so as to solve the problem of higher temperature of the battery cells inside the battery module.
The invention provides a battery module support frame, which comprises: the heat conducting device comprises a first supporting component 1, a second supporting component 2 and a heat conducting component 3, wherein the first supporting component 1 is provided with a plurality of first limiting holes 11 and a plurality of second limiting holes 12, and the circumference of each first limiting hole 11 is provided with a plurality of second limiting holes 12; the second supporting part 2 and the first supporting part 1 are arranged face to face, the second supporting part 2 is provided with a plurality of third limiting holes 21 and a plurality of fourth limiting holes 22, the circumference of each third limiting hole 21 is provided with a plurality of fourth limiting holes 22, the first limiting holes 11 and the third limiting holes 21 are arranged in one-to-one correspondence, the second limiting holes 12 and the fourth limiting holes 22 are arranged in one-to-one correspondence, and two ends of each battery core a are respectively arranged in the corresponding first limiting holes 11 and second limiting holes 12; the heat conduction component 3 is provided with a plurality of, and the both ends of each heat conduction component 3 set up respectively in the spacing hole of corresponding second 12 and fourth 22, and heat conduction component 3 includes heat conduction shell and heat conduction medium, and heat conduction medium is filled to the inside of heat conduction shell, and heat conduction medium is used for evacuating the middle part heat of battery module for a plurality of battery core a in the battery module is in best operating temperature interval, and the maximum maintenance battery core a temperature makes the battery module last to be in best working property.
In some alternative embodiments, the first support part 1 comprises a first support plate 13, a first cooling plate 14 and a first fixing element 15, the first support plate 13 facing the second support part 2, the first cooling plate 14 being arranged at a surface of the first support plate 13 facing away from the second support part 2, the first support plate 13 and the first cooling plate 14 being connected by the first fixing element 15.
Specifically, the first support part 1 includes a plurality of first fixing elements 15, and the plurality of first fixing elements 15 are uniformly arranged in the circumferential direction of the first support part 1, and optionally, each of the first fixing elements 15 penetrates the first support plate 13 and the first cooling plate 14 so that the first support plate 13 and the first cooling plate 14 are fixed. Optionally, the first fixing element 15 is a bolt and a nut, the bolt penetrates through the first support plate 13 and the first cooling plate 14, two ends of the bolt are respectively connected with the nut in a threaded manner, and the tightness between the first support plate 13 and the first cooling plate 14 is adjusted by screwing the nuts at two ends of the bolt, so that the first support plate 13 and the first cooling plate 14 are tightly attached.
In some alternative embodiments, the first support plate 13 is uniformly provided with first mounting holes in the circumferential direction, the first cooling plate 14 is uniformly provided with second mounting holes in the circumferential direction, the first mounting holes and the second mounting holes are arranged in one-to-one correspondence, and the first fixing element 15 penetrates the correspondingly arranged first mounting holes and the second mounting holes.
Specifically, the first support member 1 includes a plurality of first fixing elements 15, the plurality of first fixing elements 15 being uniformly disposed in the circumferential direction of the first support member 1, each first fixing element 15 penetrating through a first mounting hole of the first support plate 13 and a second mounting hole of the first cooling plate 14, so that the first support plate 13 and the first cooling plate 14 are fixed. Optionally, the first fixing element 15 is a bolt and a nut, the bolt penetrates through the first mounting hole and the second mounting hole, two ends of the bolt are respectively connected with the nut in a threaded manner, and the tightness between the first supporting plate 13 and the first cooling plate 14 is adjusted by screwing the nuts at two ends of the bolt, so that the first supporting plate 13 and the first cooling plate 14 are tightly attached.
In some alternative embodiments, the first cooling plate 14 includes a first cooling layer and a first insulating layer, and the first support plate 13, the first cooling layer, and the first insulating layer are sequentially stacked; the first cooling layer is made of any one of copper, aluminum and titanium alloy; the first insulating layer is made of any one of epoxy resin, polyvinyl chloride, crosslinked polyethylene, polyurethane, polytetrafluoroethylene and polyester.
Specifically, the first supporting plate 13 is provided with a plurality of first limiting holes 11 and a plurality of second limiting holes 12, and one end of each battery cell a is inserted into the first limiting hole 11, so that the battery cell a can be fixed on the first supporting member 1, and one end of each heat conducting member 3 is inserted into the second limiting hole 12, so that the heat conducting member 3 can be fixed on the first supporting member 1. The end of the battery core a and the heat conduction part 3 are abutted with the first cooling layer, the first cooling layer is made of copper, aluminum and titanium alloy, and the first cooling layer has good heat dissipation performance, can assist the heat dissipation of the battery core a and the heat conduction part 3, and improves the heat dissipation performance of the battery module. The first insulating layer is made of any one of epoxy resin, polyvinyl chloride, crosslinked polyethylene, polyurethane, polytetrafluoroethylene and polyester, and has a good insulating effect, so that the first supporting component 1 has good insulating performance.
In some alternative embodiments, the material of the first support plate 13 is an insulating and heat-conducting material, and the insulating and heat-conducting material is any one of polyphenylene ether, polybutylene terephthalate, polyoxymethylene, a mixture of polycarbonate and acrylonitrile-butadiene-styrene copolymer, and a mixture of polycarbonate and polybutylene terephthalate.
Specifically, the first supporting plate 13 is provided with a plurality of first limiting holes 11 and a plurality of second limiting holes 12, and one end of each battery cell a is inserted into the first limiting hole 11, so that the battery cell a can be fixed on the first supporting member 1, and one end of each heat conducting member 3 is inserted into the second limiting hole 12, so that the heat conducting member 3 can be fixed on the first supporting member 1. The material of the first supporting plate 13 is the insulating heat conducting material, and the first supporting plate 13 can further assist the heat dissipation of the battery core a and the heat conducting component 3, so that the heat dissipation performance of the battery module is improved. When the material of the first support plate 13 is a mixture of polycarbonate and acrylonitrile-butadiene-styrene copolymer, the ratio of polycarbonate to acrylonitrile-butadiene-styrene copolymer is 1:1. When the material of the first support plate 13 is a mixture of polycarbonate and polybutylene terephthalate, the ratio of polycarbonate to polybutylene terephthalate is 1:1.
In some alternative embodiments, the plurality of first limiting holes 11 and the plurality of second limiting holes 12 are both provided in the first support plate 13; the first limiting holes 11 are arrayed in the first supporting plate 13; or, the first limiting holes 11 are surrounded to form a plurality of concentric circles, and the radius of the circles gradually increases from inside to outside.
Specifically, a plurality of second limiting holes 12 are uniformly formed in the circumference of each first limiting hole 11, one end of each battery cell a is inserted into each first limiting hole 11, one end of each heat conducting component 3 is inserted into each second limiting hole 12, each battery cell a is surrounded by a plurality of heat conducting components 3, each heat conducting component 3 comprises a heat conducting shell and a heat conducting medium, the heat conducting medium is filled in the heat conducting shell and used for dispersing heat in the middle of the battery module, the battery cells a in the battery module are in an optimal working temperature interval, the temperature of the battery cells a is maintained to the greatest extent, and the heat of each battery cell a can be controlled, so that the temperature of each battery cell a is balanced.
In some alternative embodiments, the second support part 2 comprises a second support plate 23, a second cooling plate 24 and a second fixing element 25, the second support plate 23 facing the first support part 1, the second cooling plate 24 being arranged at a surface of the second support plate 23 facing away from the first support part 1, the second support plate 23 and the second cooling plate 24 being connected by the second fixing element 25.
Specifically, the second support part 2 includes a plurality of second fixing elements 25, and the plurality of second fixing elements 25 are uniformly disposed in the circumferential direction of the second support part 2, and optionally, each second fixing element 25 penetrates the second support plate 23 and the second cooling plate 24 so that the second support plate 23 and the second cooling plate 24 are fixed. Optionally, the second fixing element 25 is a bolt and a nut, the bolt penetrates through the second support plate 23 and the second cooling plate 24, two ends of the bolt are respectively connected with the nuts in a threaded manner, and the tightness between the second support plate 23 and the second cooling plate 24 is adjusted by screwing the nuts at two ends of the bolt, so that the second support plate 23 and the second cooling plate 24 are tightly attached.
In some alternative embodiments, the second fixing element 25 includes third mounting holes uniformly disposed in a circumferential direction of the second support plate 23, fourth mounting holes uniformly disposed in a circumferential direction of the second cooling plate 24, the third mounting holes and the fourth mounting holes being disposed in one-to-one correspondence, and the second fixing element 25 penetrates the correspondingly disposed third mounting holes and fourth mounting holes.
Specifically, the second support part 2 includes a plurality of second fixing elements 25, the plurality of second fixing elements 25 being uniformly disposed in a circumferential direction of the second support part 2, each second fixing element 25 penetrating through a second mounting hole of the second support plate 23 and a fourth mounting hole of the second cooling plate 24 so that the second support plate 23 and the second cooling plate 24 are fixed. Optionally, the second fixing element 25 is a bolt and a nut, the bolt penetrates through the third mounting hole and the fourth mounting hole, two ends of the bolt are respectively connected with the nut in a threaded manner, and the tightness between the second support plate 23 and the second cooling plate 24 is adjusted by screwing the nuts at two ends of the bolt, so that the second support plate 23 and the second cooling plate 24 are tightly attached.
In some alternative embodiments, the second cooling plate 24 includes a second cooling layer and a second insulating layer, and the second support plate 23, the second cooling layer, and the second insulating layer are sequentially stacked; the second cooling layer is made of any one of copper, aluminum and titanium alloy; the material of the second insulating layer is any one of epoxy resin, polyvinyl chloride, crosslinked polyethylene, polyurethane, polytetrafluoroethylene and polyester.
Specifically, the second supporting plate 23 is provided with a plurality of third limiting holes 21 and a plurality of fourth limiting holes 22, and the other end of each battery cell a is inserted into the third limiting holes 21, so that the battery cell a can be fixed on the second supporting member 2, and the other end of each heat conducting member 3 is inserted into the fourth limiting holes 22, so that the heat conducting member 3 can be fixed on the second supporting member 2. The end of the battery core a and the heat conduction part 3 are abutted with a second cooling layer, the second cooling layer is made of copper, aluminum and titanium alloy, and the second cooling layer has good heat dissipation performance, can assist the heat dissipation of the battery core a and the heat conduction part 3, and improves the heat dissipation performance of the battery module. The second insulating layer is made of any one of epoxy resin, polyvinyl chloride, crosslinked polyethylene, polyurethane, polytetrafluoroethylene and polyester, and has a good insulating effect, so that the second supporting component 2 has good insulating performance.
In some alternative embodiments, the material of the second support plate 23 is an insulating and heat-conducting material, and the insulating and heat-conducting material is any one of polyphenylene ether, polybutylene terephthalate, polyoxymethylene, a mixture of polycarbonate and acrylonitrile-butadiene-styrene copolymer, and a mixture of polycarbonate and polybutylene terephthalate.
Specifically, the second supporting plate 23 is provided with a plurality of third limiting holes 21 and a plurality of fourth limiting holes 22, and the other end of each battery cell a is inserted into the third limiting holes 21, so that the battery cell a can be fixed on the second supporting member 2, and the other end of each heat conducting member 3 is inserted into the fourth limiting holes 22, so that the heat conducting member 3 can be fixed on the second supporting member 2. The material of the second supporting plate 23 is the insulating heat conducting material, and the second supporting plate 23 can further assist the heat dissipation of the battery core a and the heat conducting component 3, so that the heat dissipation performance of the battery module is improved. When the material of the second support plate 23 is a mixture of polycarbonate and acrylonitrile-butadiene-styrene copolymer, the ratio of polycarbonate to acrylonitrile-butadiene-styrene copolymer is 1:1. When the material of the second supporting plate 23 is a mixture of polycarbonate and polybutylene terephthalate, the ratio of polycarbonate to polybutylene terephthalate is 1:1.
In some alternative embodiments, the plurality of third limiting holes 21 and the plurality of fourth limiting holes 22 are both provided in the second support plate 23; the third limiting holes 21 are arrayed in the second supporting plate 23; alternatively, the third limiting holes 21 are surrounded to form a plurality of concentric circles, and the radius of the circles gradually increases from inside to outside.
Specifically, a plurality of fourth limiting holes 22 are uniformly formed in the circumference of each third limiting hole 21, the other end of each battery cell a is inserted into each third limiting hole 21, the other end of each heat conducting component 3 is inserted into each fourth limiting hole 22, each battery cell a is surrounded by a plurality of heat conducting components 3, each heat conducting component 3 comprises a heat conducting shell and a heat conducting medium, the heat conducting medium is filled in the heat conducting shell and used for dispersing heat in the middle of the battery module, the battery cells a in the battery module are in an optimal working temperature interval, the temperature of the battery cells a is maintained to the greatest extent, and the heat of each battery cell a can be controlled, so that the temperature of each battery cell a is balanced.
In some alternative embodiments, the thermally conductive shell is made of resin.
Specifically, the heat conducting shell is made of phenolic resin, and the phenolic resin has good heat conducting performance and high temperature resistance and can effectively transfer heat to a heat conducting medium, so that the normal operation of the battery core a is ensured.
In some alternative embodiments, the thermally conductive shell cross-section is any one of circular, elliptical, and regular polygonal in shape.
Specifically, the shape of the second limiting hole 12 in the first support plate 13 and the shape of the fourth limiting hole 22 in the second support plate 23 are identical to the shape of the heat conductive shell cross section so that the first support plate 13 and the second support plate 23 fix the heat conductive member 3.
In some alternative embodiments, the heat conducting medium is made of an organic low-temperature phase-change material, and the organic low-temperature phase-change material is a mixed material of expanded graphite and paraffin.
Specifically, the organic low-temperature phase-change material is a special material, and can change phase at low temperature, so that a large amount of heat is absorbed, and the phase-change process of the organic low-temperature phase-change material is reversible and can be repeatedly used. The expanded graphite and the paraffin are mechanically mixed according to a certain proportion, so that an organic low-temperature phase-change material with a good effect is obtained, the phase of the mixed material of the expanded graphite and the paraffin can be changed at a low temperature, so that a large amount of heat is absorbed, the heat of the battery core a can be absorbed, the temperature of the battery core a is maintained to the greatest extent, and the battery module is enabled to be continuously in the best working performance.
In some alternative embodiments, the ratio between graphite and paraffin is 1:9-1:2.
Specifically, the expanded graphite and the paraffin are mechanically mixed according to any proportion of 1:9, 1:4, 3:7 and 1:2, so that an organic low-temperature phase-change material with a good effect is obtained, the mixed material of the expanded graphite and the paraffin can be subjected to phase change at a low temperature, so that a large amount of heat is absorbed, the heat of the battery core a can be absorbed, the temperature of the battery core a is maintained to the greatest extent, and the battery module is continuously in the best working performance.
In some alternative embodiments, the heat conducting medium is an inorganic low temperature phase-change material, and the inorganic low temperature phase-change material is a calcium chloride hexahydrate crystal salt or a mixed material of magnesium nitrate hexahydrate and calcium nitrate tetrahydrate.
Specifically, the inorganic low-temperature phase-change material is a special material, and can change phase at low temperature, so that a large amount of heat is absorbed, and the phase-change process of the inorganic low-temperature phase-change material is reversible and can be repeatedly used. For example, calcium chloride hexahydrate crystal salts are preferred inorganic low temperature phase change materials. The magnesium nitrate hexahydrate and the calcium nitrate tetrahydrate are mechanically mixed according to a certain proportion, so that an inorganic low-temperature phase-change material with good effect is obtained, the mixed material of the magnesium nitrate hexahydrate and the calcium nitrate tetrahydrate can be subjected to phase change at a low temperature, so that a large amount of heat is absorbed, the heat of the battery core a can be absorbed, the temperature of the battery core a is maintained to the greatest extent, and the battery module is enabled to be continuously in the best working performance.
In some alternative embodiments, the ratio between magnesium nitrate hexahydrate and calcium nitrate tetrahydrate is 1:9-2:3.
Specifically, magnesium nitrate hexahydrate and calcium nitrate tetrahydrate are mechanically mixed according to the proportion of 1:9 or 2:3, so that an inorganic low-temperature phase-change material with a good effect is obtained, the mixed material of the magnesium nitrate hexahydrate and the calcium nitrate tetrahydrate can be subjected to phase change at a low temperature, so that a large amount of heat is absorbed, the heat of a battery core a can be absorbed, the temperature of the battery core a is maintained to the greatest extent, and the battery module is continuously in the best working performance.
In some alternative embodiments, the second support part 2 is provided with a plurality of catches 26, the plurality of catches 26 being evenly arranged in the circumferential direction of the second support part 2.
Specifically, the buckle 26 includes buckle plate and through-hole, and buckle plate welds in second backup pad 23, and the through-hole is used for fixing bolt, and the bolt can be connected the buckle 26 that arbitrary two battery module support frames correspond the setting to realize the connection of two adjacent battery module support frames. The periphery of each battery module support frame all sets up buckle 26, and the periphery of each battery module support frame all can correspond to connect a plurality of battery module support frames. The buckle 26 is simple in structure and convenient to operate.
In another aspect, the present invention provides a battery module, which includes a plurality of battery cells a and the battery module support frame mentioned in any one of the above.
Specifically, the battery module support frame includes: the heat conducting device comprises a first supporting component 1, a second supporting component 2 and a heat conducting component 3, wherein the first supporting component 1 is provided with a plurality of first limiting holes 11 and a plurality of second limiting holes 12, and the circumference of each first limiting hole 11 is provided with a plurality of second limiting holes 12; the second supporting part 2 and the first supporting part 1 are arranged face to face, the second supporting part 2 is provided with a plurality of third limiting holes 21 and a plurality of fourth limiting holes 22, the circumference of each third limiting hole 21 is provided with a plurality of fourth limiting holes 22, the first limiting holes 11 and the third limiting holes 21 are arranged in one-to-one correspondence, and the second limiting holes 12 and the fourth limiting holes 22 are arranged in one-to-one correspondence; the heat conduction part 3 is provided with a plurality of, and the both ends of each heat conduction part 3 set up respectively in the spacing hole of corresponding second 12 and fourth 22, and heat conduction part 3 includes heat conduction shell and heat conduction medium, and heat conduction shell's inside is filled heat conduction medium. The two ends of each battery cell a are respectively arranged in the corresponding first limiting hole 11 and the corresponding second limiting hole 12, so that the battery cell a is mounted on the battery module supporting frame. The battery module support frame comprises a plurality of heat conducting components 3, the heat conducting components 3 comprise a heat conducting shell and heat conducting media, the heat conducting media are filled in the heat conducting shell and used for dispersing heat in the middle of the battery module, a plurality of battery cells a in the battery module are in an optimal working temperature interval, the temperature of the battery cells a is maintained to the greatest extent, and the battery module is enabled to be continuously in optimal working performance.
In yet another aspect, the present invention provides an energy storage device, the energy storage device including a plurality of battery modules, the battery modules being any one of the battery modules mentioned above; the plurality of battery modules are arranged in an array in the length direction, the width direction and the height direction of each battery module respectively.
The energy storage device comprises a shell and a plurality of battery modules, wherein the shell is used for accommodating the plurality of battery modules. The plurality of battery modules are arranged in an array manner in the length direction, the width direction and the height direction of each battery module, namely, a plurality of layers of battery modules are arranged in the height direction of each battery module, and each layer of battery modules comprises a plurality of battery modules arranged in an array manner in the length direction and the width direction; arranging a plurality of layers of battery modules in the width direction of each battery module, wherein each layer of battery modules comprises a plurality of battery modules which are arrayed in the length direction and the height direction; the multi-layer battery module is arranged in the length direction of the battery module, and each layer of battery module comprises a plurality of battery modules which are arranged in an array manner in the height direction and the width direction. And a cooling plate is arranged between any two layers of battery modules in the height direction of each battery module, has good heat radiation performance, can assist the heat radiation of the battery core a and the heat conduction component 3, and improves the heat radiation performance of the battery modules. The cooling plate is made of copper, aluminum and titanium alloy. The cooling plate includes cooling layer and insulating layer, and the cooling layer contacts with first support part 1 or second support part 2 of battery module support frame, and the insulating layer sets up in the surface that the cooling layer kept away from first support part 1 or second support part 2. The cooling layer is made of any one of copper, aluminum and titanium alloy; the insulating layer is made of any one of epoxy resin, polyvinyl chloride, crosslinked polyethylene, polyurethane, polytetrafluoroethylene and polyester.
In the present invention, the term "plurality" means at least two or more, unless explicitly defined otherwise. The terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; "coupled" may be directly coupled or indirectly coupled through intermediaries. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present specification, the terms "one embodiment," "some embodiments," "particular embodiments," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A battery module support frame, comprising:
the first supporting component (1) is provided with a plurality of first limiting holes (11) and a plurality of second limiting holes (12), and the circumference of each first limiting hole (11) is provided with a plurality of second limiting holes (12);
the second supporting component (2) is arranged face to face with the first supporting component (1), a plurality of third limiting holes (21) and a plurality of fourth limiting holes (22) are formed, the circumference of each third limiting hole (21) is provided with a plurality of fourth limiting holes (22), the first limiting holes (11) and the third limiting holes (21) are arranged in a one-to-one correspondence manner, the second limiting holes (12) and the fourth limiting holes (22) are arranged in a one-to-one correspondence manner, and two ends of the battery core (a) are respectively arranged in the corresponding first limiting holes (11) and the corresponding third limiting holes (21);
the heat conduction component (3) is provided with a plurality of heat conduction components, two ends of each heat conduction component (3) are respectively arranged in the corresponding second limiting hole (12) and fourth limiting hole (22), each heat conduction component (3) comprises a heat conduction shell and a heat conduction medium, the heat conduction medium is filled in the heat conduction shell, the heat conduction medium is made of an organic low-temperature phase-changing material, the organic low-temperature phase-changing material is a mixed material of expanded graphite and paraffin, and the ratio between the graphite and the paraffin is 1:9-1:2; or the heat conducting medium is made of an inorganic low-temperature phase-change material, the inorganic low-temperature phase-change material is calcium chloride hexahydrate crystal salt or a mixed material of magnesium nitrate hexahydrate and calcium nitrate tetrahydrate, and the ratio of the magnesium nitrate hexahydrate to the calcium nitrate tetrahydrate is 1:9-2:3;
the first support component (1) comprises a first support plate (13), a first cooling plate (14) and a first fixing element (15), the first support plate (13) faces the second support component (2), the first cooling plate (14) is arranged on the surface of the first support plate (13) facing away from the second support component (2), and the first support plate (13) and the first cooling plate (14) are connected through the first fixing element (15);
the first cooling plate (14) comprises a first cooling layer and a first insulating layer, and the first supporting plate (13), the first cooling layer and the first insulating layer are sequentially stacked; the first cooling layer is made of any one of copper, aluminum and titanium alloy; the first insulating layer is made of any one of epoxy resin, polyvinyl chloride, crosslinked polyethylene, polyurethane, polytetrafluoroethylene and polyester;
the first supporting plate (13) is made of an insulating heat-conducting material, and the insulating heat-conducting material is any one of polyphenyl ether, polybutylene terephthalate, polyoxymethylene, a mixture of polycarbonate and acrylonitrile-butadiene-styrene copolymer and a mixture of polycarbonate and polybutylene terephthalate;
the second supporting component (2) comprises a second supporting plate (23), a second cooling plate (24) and a second fixing element (25), the second supporting plate (23) faces the first supporting component (1), the second cooling plate (24) is arranged on the surface of the second supporting plate (23) facing away from the first supporting component (1), and the second supporting plate (23) and the second cooling plate (24) are connected through the second fixing element (25);
the second cooling plate (24) comprises a second cooling layer and a second insulating layer, and the second supporting plate (23), the second cooling layer and the second insulating layer are sequentially stacked; the second cooling layer is made of any one of copper, aluminum and titanium alloy; the second insulating layer is made of any one of epoxy resin, polyvinyl chloride, crosslinked polyethylene, polyurethane, polytetrafluoroethylene and polyester;
the material of the second supporting plate (23) is an insulating heat-conducting material, and the insulating heat-conducting material is any one of polyphenyl ether, polybutylene terephthalate, polyoxymethylene, a mixture of polycarbonate and acrylonitrile-butadiene-styrene copolymer, and a mixture of polycarbonate and polybutylene terephthalate.
2. The battery module support frame according to claim 1, wherein first mounting holes are uniformly formed in the circumferential direction of the first support plate (13), second mounting holes are uniformly formed in the circumferential direction of the first cooling plate (14), the first mounting holes and the second mounting holes are arranged in one-to-one correspondence, and the first fixing member (15) penetrates through the correspondingly arranged first mounting holes and second mounting holes.
3. The battery module support frame according to claim 1, wherein a plurality of the first limiting holes (11) and a plurality of the second limiting holes (12) are provided to the first support plate (13);
the plurality of first limiting holes (11) are arrayed in the first supporting plate (13); or,
the first limiting holes (11) are surrounded to form a plurality of concentric circular rings, and the radius of the circular rings is gradually increased from inside to outside.
4. The battery module support frame according to claim 1, wherein third mounting holes are uniformly formed in the circumferential direction of the second support plate (23), fourth mounting holes are uniformly formed in the circumferential direction of the second cooling plate (24), the third mounting holes and the fourth mounting holes are arranged in one-to-one correspondence, and the second fixing member (25) penetrates through the correspondingly arranged third mounting holes and fourth mounting holes.
5. The battery module support frame according to claim 1, wherein a plurality of the third limiting holes (21) and a plurality of the fourth limiting holes (22) are provided to the second support plate (23);
the third limiting holes (21) are arrayed in the second supporting plate (23); or,
and a plurality of third limiting holes (21) are surrounded to form a plurality of concentric circular rings, and the radius of each circular ring is gradually increased from inside to outside.
6. The battery module support frame of claim 1, wherein the thermally conductive shell is made of resin.
7. The battery module support frame of claim 6, wherein the thermally conductive case has a cross-sectional shape that is any one of circular, elliptical, and regular polygonal.
8. The battery module support frame according to claim 1, wherein the second support member (2) is provided with a plurality of buckles (26), and a plurality of the buckles (26) are uniformly arranged in the circumferential direction of the second support member (2).
9. A battery module comprising a plurality of battery cells (a) and the battery module support frame according to any one of claims 1 to 8.
10. An energy storage device, comprising a plurality of battery modules, wherein the battery modules are the battery modules of claim 9; the plurality of battery modules are arranged in an array in the length direction, the width direction and the height direction of each battery module.
CN202311039698.3A 2023-08-17 2023-08-17 Battery module support frame, battery module and energy storage device Active CN116759704B (en)

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