CN108923008A - A kind of modified liquid cooling battery case - Google Patents

A kind of modified liquid cooling battery case Download PDF

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Publication number
CN108923008A
CN108923008A CN201810956714.8A CN201810956714A CN108923008A CN 108923008 A CN108923008 A CN 108923008A CN 201810956714 A CN201810956714 A CN 201810956714A CN 108923008 A CN108923008 A CN 108923008A
Authority
CN
China
Prior art keywords
battery
cover board
effect
liquid cooling
gasket
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201810956714.8A
Other languages
Chinese (zh)
Inventor
吴松彦
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Yi Xinfeng Intelligent Equipment Co Ltd
Original Assignee
Guangdong Yi Xinfeng Intelligent Equipment Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangdong Yi Xinfeng Intelligent Equipment Co Ltd filed Critical Guangdong Yi Xinfeng Intelligent Equipment Co Ltd
Priority to CN201810956714.8A priority Critical patent/CN108923008A/en
Publication of CN108923008A publication Critical patent/CN108923008A/en
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/61Types of temperature control
    • H01M10/613Cooling or keeping cold
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/62Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625Vehicles
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/65Means for temperature control structurally associated with the cells
    • H01M10/655Solid structures for heat exchange or heat conduction
    • H01M10/6556Solid parts with flow channel passages or pipes for heat exchange
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/65Means for temperature control structurally associated with the cells
    • H01M10/656Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6567Liquids
    • H01M10/6568Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/233Mountings; 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
    • H01M50/24Mountings; 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 from their environment, e.g. from corrosion
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50Current conducting connections for cells or batteries
    • H01M50/502Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Abstract

The present invention relates to battery technology fields, more particularly to a kind of modified liquid cooling battery case, including cabinet, battery modules arranged in the box body, it is set to the cover board that tank surface encapsulates battery modules, battery modules are connected by several single batteries, and every group of single battery is the series connection of several battery cores, and several single batteries and several battery cores are respectively provided with connection sheet series connection;Cover board corresponds to every group of single battery and compresses equipped with shockproof strip, is enclosed outside every group of single battery equipped with thermally conductive flat tube, and thermally conductive flat tube head and the tail are communicated with collecting pipe, and the cover board is fixed with to import tube body and export tube body and be connected to respectively with the collecting pipe of head and the tail position.The present invention is directed to multi-lamination structure single battery heat-transfer character, technical solution with the shell effective of pole piece trimming end face single battery is provided, simultaneously, for the producing cause of the contact resistance difference of series-parallel contact, the connection bolt pretightening reasonability and lasting stability of the pole of series-parallel connection sheet and single battery are provided.

Description

A kind of modified liquid cooling battery case
Technical field
The present invention relates to battery technology fields, more particularly to a kind of modified liquid cooling battery case.
Background technique
Battery modules are the battery packs formed by multiple electrical core of power battery serial or parallel connections, so that whole be able to satisfy product Demand to electric energy.Now, there is the world's largest power battery industry in China, and dynamic lithium battery group is as new-energy automobile core Component, the quality of performance undoubtedly become the key that can new-energy automobile industry develop in a healthy way.Since electric car needs height Each components in pressure driving automobile, therefore need that several hundred or even thousands of section single batteries get up to form battery pack in series and parallel to meet Electric car power demands.And among currently used battery variety, lithium ion battery is put certainly because it is with energy density height The electric low multiple advantages of rate and be used in new-energy automobile.
Existing lithium battery pack there is problems in actual use:Energy density is lower, temperature control is uneven Box cover is rigidly bad, seal failure, disassembling vibration momentum biography between inconvenience, battery core, seriously, cooling heat-conducting effect is poor, a variety of The problem superposition etc. that influences each other is directly resulted in and is existed using instability problem.
Summary of the invention
To solve the above problems, the present invention provides a kind of producing cause of contact resistance difference for series-parallel contact, The modified liquid of connection the bolt pretightening reasonability and lasting stability of the pole of series-parallel connection sheet and single battery is provided Cold battery case.
The technical scheme adopted by the invention is that:A kind of modified liquid cooling battery case, including cabinet, it is arranged in the box body Battery modules are set to the cover board that tank surface encapsulates battery modules, and the battery modules are connected by several single batteries, often Group single battery is the series connection of several battery cores, and several single batteries and several battery cores are respectively provided with connection sheet series connection;It is described Cover board corresponds to every group of single battery and compresses equipped with shockproof strip, encloses outside every group of single battery equipped with thermally conductive flat tube, thermally conductive Flat tube head and the tail are communicated with collecting pipe, and the cover board is fixed with to import tube body and export tube body to be connected with the collecting pipe of head and the tail position respectively It is logical.
Further improvement of these options is that gasket is arranged between the cabinet and cover board;The corresponding lid of the cabinet Plate one side setting flanging, gasket are set to flanging, and the cover board opens up mounting hole and passes through bolt lock across gasket and cabinet Tightly in cabinet, the gasket corresponds to cover board one side setting raised line.
Further improvement of these options is that the side edge thereof bending is formed with rectangle frame, and the rectangle frame is double Bending is arranged to form rectangle, corresponds to mounting hole and offers through-hole;The lid surface is offered to be connected for fixing battery modules The connecting hole of installation is connect, the connecting hole is stretched by lid surface punching and forms flange, and the flange position is welded with clip.
Further improvement of these options is that the gasket is elastic rubber gasket, is integrated into raised line Type setting, the raised line are equipped with two, are set to gasket and are located at two sides of mounting hole.
Further improvement of these options is pole of the battery core setting for connection, and locking is arranged on the pole The fixed series connection of connection sheet, the lock-screw are arranged with spring pad and connection sheet are locked by screw;The lock-screw Threaded rod outer diameter offers grooving.
Further improvement of these options is that the spring pad is the setting of ripple type spring pad, is set for double-layer structure It sets.
Further improvement of these options is that the connection sheet includes the conductive electrode being stacked by several conductive copper layers of foil Quilt outside piece and the insulation for coating electric conduction electrode-plate, the insulation are outer exposed by electric conduction electrode-plate equipped with notch by both ends
Further improvement of these options is that the electric conduction electrode-plate exposed parts offer connecting hole, the conductive electrode It is arc setting outside piece and insulation, the insulation is outer to be offered counterbore, the counterbore and connecting hole away from notch on one side For the setting of same axle center.
Further improvement of these options is that the battery core of the single battery is equipped with rectangle long side and short side, described to lead Hot flat tube fits in rectangle short side, and battery core is fixed concatenated lock ring away from the one side setting of rectangle short side by single battery.
Further improvement of these options is that the thermally conductive flat tube is double-layer structure setting, and it is in 90 that both ends, which are equipped with, Single battery is fixed in degree bending, and the collecting pipe is equipped with flexible elbow with importing tube body and export tube body communicating position and is connected to.
Beneficial effects of the present invention are:
In a first aspect, setting cabinet facilitates the installation and fixation of battery modules, pass through cover board after fixed installation for battery Module packaging plays a protective role to battery modules in cabinet, guarantees that battery modules are highly-safe in use, reliably Property is strong, and stability is good;Second aspect, it is easy to connect if battery modules connect to be formed by a song single battery, after series connection is formed Capacity is big, and long service life, cruising ability is strong, in addition, single battery is composed in series by multiple battery cores, so as to greatly improve The capacity of battery modules, use intensity are high;The third aspect, single battery with battery core are connected by connection sheet, connection Effect is good, is connected by connection sheet, connects easy for installation;Shockproof strip is arranged on the cover board and plays to battery modules for fourth aspect Fixed function prevents battery modules internal vibration, and shockproof effect is good, and stability is good, highly reliable;5th aspect, every group of monomer Outside batteries are enclosed equipped with thermally conductive flat tube, the heat derives in single battery can be carried out circulating cooling effect by heat conducting pipe, Guarantee the cooling effect of single battery, stability in use is stronger, and reliability is higher;6th aspect, the head and the tail of thermally conductive flat tube Position is communicated with collecting pipe, recycles coolant liquid by collecting pipe and imports and export, so as to improve following for integrally cooling Ring further increases cooling effect;7th aspect, the collecting pipe position of head and the tail, which is being respectively communicated with, imports tube body and export Tube body is guided the coolant into the thermally conductive flat tube of muscle particular by importing tube body and is cooled down to single battery, in thermally conductive flat tube The heat that interior coolant liquid is issued single battery is taken out of to export tube body and realizes circulating cooling effect, good cooling results.
Cover board is equipped with branch nail seat, and the shockproof strip is fixed at branch nail seat, and the branch nail seat is T-type setting comprising It is fixed on the fixed part of cover board, is integrally formed with fixed part and the strip that shockproof strip is fixed, the shockproof strip is Rubber shockproof Item comprising main body, the interconnecting piece for being set to main body one side and being connected with branch nail seat are set to main body away from interconnecting piece one side Shockproof portion, the main body are integrally formed with interconnecting piece and shockproof portion, and the interconnecting piece is equipped with the link slot being connected with strip, institute It states shockproof portion and offers shockproof slot away from interconnecting piece;Shockproof strip is mounted between cover board and battery series mould set, hand battery strings Height space constraint between gang mould group cover board, shockproof strip limit the amplitude model of the short transverse vibration of battery series mould set It encloses, plays the effect of antidetonation energy-absorbing.In addition, being provided with branch nail seat between shockproof strip and cover board, branch nail seat does not set for T-type It sets, shockproof strip is fixed, anti seismic efficiency.
Between cabinet and cover board be provided with gasket, effect be to cabinet content Naan dress battery modules play it is close Protective effect is sealed, sealing effect is good, prevents the objects such as liquid from entering situations such as inside causes battery modules to be damaged appearance, further serves as To protecting effect;Cabinet is provided with flanging in corresponding cover board installation on one side, and gasket is arranged on flanging, can specifically facilitate The setting of gasket, while also can be improved sealing effect, so that the sealing space of gasket is bigger, sealing effect is more preferable, right The protecting effect of internal cell mould group is more preferable;Setting mounting hole sequentially passes through cover board, gasket and flanging, particular by bolt It penetrates mounting hole and realizes fixed installation, easy for installation, good fixing effect locks cover board and flanging by sealing The compression of pad plays sealing effect;Gasket corresponds to cover board and is equipped with raised line on one side, and the effect that raised line is arranged can further increase Raised line is compressed realize locking and close in use, when being locked by cover board and flanging by bolt by the sealing effect of gasket Envelope effect, sealing effect is good, and battery modules use highly-safe, solves cabinet and cover board because stiff problem causes material to become Shape, and then influence the problem of sealing.The method of use is:To prevent from deforming, gasket is adopted for cabinet and the molding of cover board integrated sheet-metal With the biconvex structure of biconvex gasket, to realize sealing, protecting effect is good, highly-safe.
Pole is set, the pole in the battery core of two adjacent groups is overlapped by connection sheet and is connected, realizes series connection effect, connection Effect is good, in actual use, sets arc for connection sheet, can lengthen its stroke, facilitates installation, while improving cascading effect With the safety used;Connection sheet is locked on pole fixed effect of realizing by setting lock-screw, easy for installation, connection Effect is good, facilitates installation connection to use, cascading effect is good, and what is used is highly-safe;One side is locked to connection sheet in lock-screw Spring pad is set, shockproof anti-loosing effect can be played particular by spring pad, in actual use after lock-screw is fixed, Locking effect and antihunt action can be further increased by the effect of spring pad, locking effect is good, and stability is strong;Lock-screw Threaded rod outer diameter offer grooving, effect is able to maintain even if being collided or other vibration facter lock-screws Locking does not loosen state, and locking effect is good, and reliability is strong.
Solves thread looseness phenomenon by the combination that grooving and spring pad is arranged in the threaded rod position of lock-screw;Specifically That the grooving is to cut off threaded rod ring screw, threaded rod ring screw cut off threaded hole on section and pole or Nut ring screw sassafras face of rubbing forms cutting effect, and the ring screw of grooving and threaded hole or nut forms cutting effect, makes to lock Tight screw causes spiral seondary effect to be overcome with threaded hole or nut cooperation, and lock-screw and threaded hole or nut cooperation cause spiral shell Rotation seondary effect is that bolt and nut loosens principal element, lock-screw and threaded hole under shock effect or nut cooperation causes spiral After seondary effect is overcome, lock-screw and threaded hole or nut pretightning force are obtained in holding, lock-screw and threaded hole or nut Pretightning force persistently keep, to improve the reliability that battery modules use;The waveform spring pad and conventional helical spring Pad compared with traditional helical spring pad, is passed compared to that only can play identical amount of deflection and pressure force with the space of one third The helical spring pad of system is that its material is compressed with reversing variant, so that pressure force is directly proportional to displacement, results in compression The non-perpendicular both ends with helical spring pad axial direction of pressure force, for needing the pressure of long timeliness to keep sealing structure, such spiral Structure spring it is difficult to ensure that.
The copper-foil conducting electricity of several layers is formed into electric conduction electrode-plate by stacking mode, can be played in actual use good Connection effect can play locking antihunt action upon connection, and transmission electricity can be stablized after battery core of connecting by, which guaranteeing, uses, and raising makes Stability, it is highly reliable;Setting insulation is outer to be encapsulated electric conduction electrode-plate, and insulation specifically is played in electric conduction electrode-plate encapsulation and is protected Shield effect, improves the safety used, while also having reliable stability and antihunt action;Insulation is outer to be arranged notch by both ends So that electric conduction electrode-plate is exposed, effect is that the connection of electric conduction electrode-plate is facilitated to install and use, and facilitates series connection conductive during the installation process, The reliability stability used is good.
The group series connection arc connection sheet being made of multilayer conductive copper foil, polyethylene insulation covering, connecting hole, according to electric current Collection volt effect uses multilayer conductive copper foil, can satisfy more big overload electric current, and the group series connection arc of multilayer conductive copper foil composition connects Contact pin has a degree of flexibility, and certain amplitude momentum can be absorbed under vibration environment, plays the amplitude momentum for avoiding vibration Cause the bolt looseness of fixed group series connection arc connection sheet, series connection arc connection sheet arcuate structure and the common piece that is connected in series use Domes are compared, and arc connection sheet arcuate structure can play the fixing bolt of holding group series connection arc connection sheet to battery electrode column The pretightning force of screw hole, so that improving connection sheet contacts conductive reliability with battery electrode column.Polyethylene insulation covering is by multilayer conductive Copper foil-clad is fixed, and is avoided that the copper-foil conducting electricity interlayer of multilayer conductive copper foil in the energized state climbs electrical effect, to improve lithium The safety of ion battery systems;In battery core series connection using the copper-foil conducting electricity connecting post of layer flexible, can be very good to inhale It receives the battery core vibration mutual in vibration to transmit by electric conduction electrode-plate, prevents bigger vibration from occurring.To as small as possible The vibration to pole piece screw is reduced, screw loosening is prevented.And using going here and there and even arc or horizontal arcuate structure, can prevent battery core by Level when thermal expansion is pullled, and the safety used is highly reliable.
Outwardly due to single battery rectangle short side, single battery rectangle short side direction is the trimming of single battery battery core pole piece End, single battery rectangle longitudinal direction is single battery battery core pole piece in-plane, forms multilayered structure by diaphragm and pole piece, by Belong to high-molecular organic material in diaphragm, thermal coefficient is low, and the number of plies for forming multilayered structure by diaphragm and pole piece the how thermally conductive Performance is poorer.The battery core pole piece remoter apart from single battery case conduct heat outward heat dissipation thermal resistance it is bigger, single battery rectangle short side Direction is the trimming end of single battery battery core pole piece, and each pole piece all only has single-layer septum isolation, and heat conduction condition is almost the same, The thermally conductive flat tube of flat tube and single battery rectangle short side thermal contact conductance, can more uniformly provide each layer pole piece of single battery battery core More consistent heat-conducting effect.
The both ends port of thermally conductive flat tube connects conducting with variable diameter collecting pipe flat tube section short side side, and branch end hooks and is installed on variable diameter Collecting pipe flat tube section short side one side, the straight section at the length section both ends of lock ring are surrounded two variable diameter collecting pipes in the form of cornerite, are installed on The branch end of variable diameter collecting pipe flat tube section short side one side hooks to buckle into lock ring and fixes single battery.
Thermally conductive flat tube connects conducting with variable diameter collecting pipe short side side, and uses laser welding, and weld seam should meet air-tightness It is required that two branch ends, which are hooked, is installed on variable diameter collecting pipe short side one side using laser welding, welding point need to meet after lock ring buckles into The thermally conductive peripheral frame of flat tube is kept to surround the groups of intensity requirement of single battery.
Flexible elbow is manufactured using ethylene propylene diene rubber.Ethylene propylene diene rubber has ozone-resistant, weatherability, chemicals-resistant rotten Corrosion, dense water, wearability, deformation resistance, acid resistance, alkali resistance are excellent, and heat-resisting 150 DEG C, low temperature resistant -50 DEG C, tensile strength Superior performance.
In the present invention, for multi-lamination structure single battery heat-transfer character, provide and pole piece trimming end face single battery Shell effective technical solution, meanwhile, for the producing cause of the contact resistance difference of series-parallel contact, provide string simultaneously Join the connection bolt pretightening reasonability and lasting stability of the pole of connection sheet and single battery.
Detailed description of the invention
Fig. 1 is exploded perspective figure of the invention;
Fig. 2 is side view explosive view of the invention;
Fig. 3 is the exploded perspective figure at another visual angle of the present invention;
Fig. 4 is enlarged drawing at the A of Fig. 3;
Fig. 5 is the perspective view of battery modules of the present invention;
Fig. 6 is the perspective view of single battery of the present invention;
Fig. 7 is the perspective view of battery core of the present invention;
Fig. 8 is the perspective view of spring pad of the present invention;
Fig. 9 is the perspective view of connection sheet of the present invention;
Figure 10 is the partial schematic diagram of crash roll of the present invention.
Description of symbols:Battery pack integrated system 100, cabinet 110, cover board 111, rectangle frame 111a, connecting hole 111b, Gasket 112, raised line 112a, flanging 113, mounting hole 114, battery modules 120, single battery 121, battery core 122, lock ring 123, Connection sheet 130, pole 131, lock-screw 132, grooving 132a, spring pad 133, electric conduction electrode-plate 134, insulation are outer by 135, notch 135a, shockproof strip 140, branch nail seat 141, interconnecting piece 142, shockproof portion 143, thermally conductive flat tube 150, collecting pipe 151, tube body is imported 152, tube body 153, flexible elbow 154 are exported.
Specific embodiment
The present invention will be further explained below with reference to the accompanying drawings.
As shown in fig. 1~fig. 5, a kind of modified liquid cooling battery case 100, including cabinet 110, are set in cabinet 110 Battery modules 120, are set to the cover board 111 that 110 surface of cabinet encapsulates battery modules 120, and the battery modules 120 are by several Single battery 121 is connected, and every group of single battery 121 is that several battery cores 122 are connected, several single batteries 121 and several A battery core 122 is respectively provided with the series connection of connection sheet 130;The corresponding every group of single battery 121 of the cover board 111 is compressed equipped with shockproof strip 140, It is enclosed outside every group of single battery 121 equipped with thermally conductive flat tube 150, thermally conductive 150 head and the tail of flat tube are communicated with collecting pipe 151, institute State cover board 111 be fixed with import tube body 152 and export tube body 153 be connected to respectively with the collecting pipe 151 of head and the tail position.
In a first aspect, setting cabinet 110 facilitates the installation and fixation of battery modules 120, pass through cover board after fixed installation 111 are encapsulated in battery modules 120 in cabinet 110, play a protective role to battery modules 120, guarantee that battery modules 120 make With highly-safe in the process, highly reliable, stability is good;Second aspect, if battery modules 120 are by singing a single battery 121 Series connection is formed, easy to connect, and capacity is big after series connection is formed, and long service life, cruising ability is strong, in addition, single battery 121 is by more A battery core 122 is composed in series, and so as to greatly improve the capacity of battery modules 120, use intensity is high;The third aspect, monomer Battery 121 with battery core 122 is connected by connection sheet 130, and good connecting effect is connected by connection sheet 130, connection peace Dress is convenient;Fourth aspect is arranged shockproof strip 140 on cover board 111 and plays fixed function to battery modules 120, prevents battery mould 120 internal vibrations of group, shockproof effect is good, and stability is good, highly reliable;In terms of 5th, encloses and set outside every group of single battery 121 There is thermally conductive flat tube 150, the heat derives in single battery 121 can be carried out by circulating cooling effect by heat conducting pipe, guarantee monomer The cooling effect of battery 121, stability in use is stronger, and reliability is higher;6th aspect, the head and the tail position of thermally conductive flat tube 150 It sets and is communicated with collecting pipe 151, coolant liquid is recycled by collecting pipe 151 and imports and exports, so as to improve whole cooling Cyclicity, further increase cooling effect;7th aspect, 151 position of collecting pipe of head and the tail has been respectively communicated with ingress pipe Body 152 and export tube body 153, guide the coolant into the thermally conductive flat tube 150 of muscle particular by tube body 152 is imported to single battery 121 are cooled down, and coolant liquid takes the heat that single battery 121 is issued out of real to export tube body 153 in thermally conductive flat tube 150 Existing circulating cooling effect, good cooling results.
Gasket 112 is set between cabinet 110 and cover board 111;Flanging is arranged in the corresponding cover board 111 of the cabinet 110 on one side 113, gasket 112 is set to flanging 113, and the cover board 111 opens up mounting hole 114 and passes through across gasket 112 and cabinet 110 Bolt lock onto cabinet 110, and raised line 112a is arranged in the corresponding cover board 111 of the gasket 112 on one side, in cabinet 110 and cover board 111 Between be provided with gasket 112, effect be to 110 content Naan of cabinet dress battery modules 120 play the role of seal protection, Sealing effect is good, prevents the objects such as liquid from entering situations such as inside causes battery modules 120 to be damaged appearance, further functions as protection effect Fruit;Cabinet 110 is provided with flanging 113 in the corresponding installation of cover board 111 on one side, and gasket 112 is arranged on flanging 113, specifically The setting of gasket 112 can be facilitated, while also can be improved sealing effect, so that the sealing space of gasket 112 is bigger, it is close It is more preferable to seal effect, it is more preferable to the protecting effect of internal battery modules 120;Setting mounting hole 114 sequentially passes through cover board 111, sealing Pad 112 and flanging 113 penetrate the realization of mounting hole 114 particular by bolt and are fixedly mounted, easy for installation, good fixing effect, It locks cover board 111 and flanging 113 and plays sealing effect by the compression of gasket 112;The corresponding lid of gasket 112 111 one side of plate is equipped with raised line 112a, and the effect of setting raised line 112a can further increase the sealing effect of gasket 112, In use, raised line 112a is compressed when locking by cover board 111 and flanging 113 by bolt realize locking and sealing function, it is close Envelope effect is good, and battery modules 120 use highly-safe, solve cabinet 110 and cover board 111 because stiff problem causes material to become Shape, and then influence the problem of sealing.The method of use is:Cabinet 110 and the molding of 111 integrated sheet-metal of cover board are close to prevent from deforming Packing 112 is using the biconvex structure of biconvex 112a gasket 112, and to realize sealing, protecting effect is good, highly-safe.
111 edge bending of cover board is formed with rectangle frame 111a, and the rectangle frame 111a is that double-bending is arranged to form rectangle, Corresponding mounting hole 114 offers through-hole;Specifically setting rectangle frame 111a and cover board 111 are integrally formed, so that 111 edge of cover board Intensity is higher, and reliability in use and resistance to deformation intensity are higher, and sealing effect is more preferable during locking, stability and protection Effect is further;111 surface of cover board offers the connecting hole 111b for fixing the connection installation of battery modules 120, institute It states connecting hole 111b and flange is formed by the punching stretching of 111 surface of cover board, the flange position is welded with clip, specifically in battery Mould group 120 needs to be arranged some cooling-parts after installing, and cooling pipe is fixed by connecting hole 111b, is passing through punching The flange formed between butt formula can be improved fixing intensity, while also having welded clip and be fixed and having installed and used, Neng Goubao The convenience of fixed installation is improved in the case where card sealing effect, reliability and stability are stronger.
Gasket 112 is elastic rubber gasket 112, is integrally formed setting with raised line 112a, the raised line 112a Equipped with two, it is set to gasket 112 and is located at 114 two sides of mounting hole, using integrally formed gasket 112, sealing intensity Higher, easy for installation in use, reliability is high, the raised line 112a of setting two good to 120 protecting effect of battery modules It can prevent liquid from entering in cabinet 110 from 114 location stream of mounting hole, so as to further function as seal protection effect, sealing effect Fruit is good, and protecting effect is good.
As shown in figs. 6-9, the setting of battery core 122 is used for the pole 131 of connection, and lock-screw is arranged on the pole 131 The fixed series connection of connection sheet 130, the lock-screw 132 are arranged with spring pad 133 and connection sheet 130 are locked, be arranged by 132 Pole 131 in the battery core 122 of two adjacent groups is overlapped by connection sheet 130 and is connected by pole 131, realizes series connection effect, connection Effect is good, in actual use, sets arc for connection sheet 130, can lengthen its stroke, facilitate installation, while improving series connection Effect and the safety used;Lock-screw 132 is set, connection sheet 130 is locked on pole 131 fixed effect of realizing, Easy for installation, good connecting effect facilitates installation connection to use, and cascading effect is good, and what is used is highly-safe;In lock-screw 132 One side setting spring pad 133 is locked to connection sheet 130, shockproof anti-loosing effect can be played particular by spring pad 133, in reality In use after lock-screw 132 is fixed, locking effect and shockproof work can be further increased by the effect of spring pad 133 With locking effect is good, and stability is strong;The threaded rod outer diameter of lock-screw 132 offers grooving, and effect is even if being touched It hits or other vibration facter lock-screws 132 is also able to maintain locking and does not loosen state, locking effect is good, and reliability is strong.
The threaded rod outer diameter of lock-screw 132 offers grooving 132a, though be collided or other vibration facters lock Tight screw 132 is also able to maintain locking and does not loosen state, and locking effect is good, and reliability is strong.
Solves thread looseness by the combination that grooving 132a and spring pad 133 is arranged in the threaded rod position of lock-screw 132 Phenomenon;Specifically, the grooving 132a is to cut off threaded rod ring screw, and threaded rod ring screw cuts off section and pole Threaded hole or nut ring screw on 131 sassafras face of rubbing form cutting effect, the annular spiral shell of grooving 132a and threaded hole or nut Line forms cutting effect, makes lock-screw 132 cause spiral seondary effect to be overcome with threaded hole or nut cooperation, lock-screw 132 cause spiral seondary effect to be that bolt and nut loosens principal element, locking screw under shock effect with threaded hole or nut cooperation After nail 132 causes spiral seondary effect to be overcome with threaded hole or nut cooperation, lock-screw 132 and threaded hole or nut are pre-tightened Power is obtained in holding, and lock-screw 132 is persistently kept with the pretightning force of threaded hole or nut, to improve the use of battery modules 120 Reliability;The waveform spring pad 133 can only be played with the space of one third compared with conventional helical spring pad 133 Identical amount of deflection and pressure force, compared with traditional helical spring pad 133, traditional helical spring pad 133 is its material to turn round Transformation type mode is compressed, so that pressure force is directly proportional to displacement, it is non-perpendicular with helical spring pad 133 to result in compression pressure force Axial both ends, for needing the pressure of long timeliness to keep sealing structure, such helical structure spring it is difficult to ensure that.
As shown in Figure 10, spring pad 133 is the setting of ripple type spring pad 133, is arranged for double-layer structure, using ripple type Spring pad 133 be arranged, can be stable play shockproof anti-loose effect, global reliability is stronger, and stability is more preferable;It can use In play dual shockproof locking protective effect, while locking effect is more preferable, and reliability is stronger.
Connection sheet 130 includes the electric conduction electrode-plate 134 being stacked by several conductive copper layers of foil and coats electric conduction electrode-plate 134 Insulation is outer by 135, and the insulation is outer exposed by electric conduction electrode-plate 134 equipped with notch 135a by 135 both ends;By the conductive copper of several layers Foil forms electric conduction electrode-plate 134 by stacking mode, can play good connection effect in actual use, can rise upon connection To locking antihunt action, transmission electricity can be stablized after battery core 122 of connecting by, which guaranteeing, is used, and improves the stability used, reliability By force;Setting insulation is outer to be encapsulated electric conduction electrode-plate 134 by 135, and insulation protection specifically is played in the encapsulation of electric conduction electrode-plate 134, The safety used is improved, while also there is reliable stability and antihunt action;Insulation is outer to be arranged notch 135a by 135 both ends So that electric conduction electrode-plate 134 is exposed, effect is that the connection of electric conduction electrode-plate 134 is facilitated to install and use, and facilitates string during the installation process Connection is conductive, and the reliability stability used is good.
The group series connection arc connection sheet 130 being made of multilayer conductive copper foil, polyethylene insulation covering, connecting hole 111b, according to Multilayer conductive copper foil is used according to the collection volt effect of electric current, can satisfy more big overload electric current, the group string of multilayer conductive copper foil composition Joining arc connection sheet 130 has a degree of flexibility, and certain amplitude momentum can be absorbed under vibration environment, plays and avoids shaking Amplitude momentum cause the bolt looseness of fixed group series connection arc connection sheet 130, series connection 130 arcuate structure of arc connection sheet and often It is compared with piece 130 is connected in series using domes, 130 arcuate structure of arc connection sheet can play the series connection arc connection of holding group The fixing bolt of piece 130 leads the pretightning force of 131 screw hole of battery electrode column to improve connection sheet 130 and contact with battery electrode column 131 Electric reliability.Polyethylene insulation covering fixes multilayer conductive copper foil-clad, is avoided that multilayer conductive copper foil in the energized state Copper-foil conducting electricity interlayer climb electrical effect, to improve the safety of lithium-ion battery systems;Multilayer is used when battery core 122 is connected Copper-foil conducting electricity connecting post 131 flexible can be very good the vibration mutual in vibration of absorption battery core 122 and pass through conductive electrode Piece 134 transmits, and prevents bigger vibration from occurring.Vibration to reduction as small as possible to pole piece screw, prevents screw loosening. And using going here and there and connecting arc or horizontal arcuate structure, it can prevent level when 122 expanded by heating of battery core from pullling, the safety used It is highly reliable.
134 exposed parts of electric conduction electrode-plate offer connecting hole 111b, and the electric conduction electrode-plate 134 is outer with insulation to be by 135 Arc setting, the insulation is outer to offer counterbore away from notch 135a by 135 on one side, and the counterbore is same with connecting hole 111b Axle center setting;It is used in series by the fixed electric conduction electrode-plate 134 of connecting hole 111b connection mounting screw, easy for installation, connection effect It is good, it is easy to use;The connection sheet 130 being arranged using arc, can prevent level when 122 expanded by heating of battery core from pullling, and use Safety it is highly reliable;It can be used to lock with the screw of countersunk head or spring pad 133 and use, can be further functioned as after locking Shockproof anti-loose effect, use reliability are strong.
As shown in figure 9, cover board 111 is equipped with branch nail seat 141, the shockproof strip 140 is fixed at branch nail seat 141, described Branch nail seat 141 is T-type setting comprising is fixed on the fixed part of cover board 111, is integrally formed with fixed part and by shockproof strip 140 Fixed strip, the shockproof strip 140 be Rubber shockproof item 140 comprising main body, be set to main body one side and with branch nail seat 141 connected interconnecting pieces 142 are set to the shockproof portion 143 that main body deviates from 142 one side of interconnecting piece, the main body and interconnecting piece 142 It is integrally formed with shockproof portion 143, the interconnecting piece 142 is equipped with the link slot being connected with strip, and the shockproof portion 143 is away from company Socket part 142 offers shockproof slot;Shockproof strip 140 is mounted between cover board 111 and battery series mould set, flashlight pond series mould set Height space constraint between cover board 111, shockproof strip 140 limit the amplitude model of the short transverse vibration of battery series mould set It encloses, plays the effect of antidetonation energy-absorbing.In addition, being provided with branch nail seat 141, not branch nail seat between shockproof strip 140 and cover board 111 141 are arranged for T-type, and shockproof strip 140 is fixed, anti seismic efficiency.
The battery core 122 of single battery 121 is equipped with rectangle long side and short side, and the thermally conductive flat tube 150 fits in rectangle short side, Single battery 121, by the fixed concatenated lock ring 123 of battery core 122, is particularly due to single battery away from the setting of rectangle short side one side 121 rectangle short sides outwardly, can provide single battery 121 battery core, 122 each layers of pole piece to consistent heat-conducting effect, thermally conductive cooling effect Good, the effect that lock ring 123 is arranged will be fixed by single battery 121, improve fixed effect and Homogeneouslly-radiating cooling effect.
Thermally conductive flat tube 150 is double-layer structure setting, and both ends, which are equipped with, is fixed on single battery 121, institute in 90-degree bending It states collecting pipe 151 and is connected to importing tube body 152 and export 153 communicating position of tube body equipped with flexible elbow 154;Using double-layer structure Thermally conductive flat tube 150 radiate single battery 121 is fixed, uniform heat dissipation effect can be further increased, reliability is more By force.
Outwardly due to 121 rectangle short side of single battery, 121 rectangle short side direction of single battery is 121 battery core of single battery The trimming end of 122 pole pieces, 121 rectangle longitudinal direction of single battery are 121 battery core of single battery, 122 pole piece in-planes, by every Film and pole piece form multilayered structure, and since diaphragm belongs to high-molecular organic material, thermal coefficient is low, is made of diaphragm and pole piece The number of plies of multilayered structure is more, and heating conduction is poorer.Battery core 122 pole piece remoter apart from 121 shell of single battery conducts heat outward to be dissipated Thermal resistance is bigger, and 121 rectangle short side direction of single battery is the trimming end of 121 battery core of single battery, 122 pole piece, and each pole piece is all Only single-layer septum is isolated, and heat conduction condition is almost the same, and the thermally conductive flat tube 150 of flat tube is contacted with 121 rectangle short side of single battery It is thermally conductive, more uniformly it can provide single battery 121 battery core, 122 each layers of pole piece to more consistent heat-conducting effect.
The both ends port of thermally conductive flat tube 150 connects conducting with 151 flat tube section short side side of variable diameter collecting pipe, and branch end hooks installation In 151 flat tube section short side one side of variable diameter collecting pipe, the straight section at the length section both ends of lock ring 123 is surrounded two variable diameters in the form of cornerite and converged Flow tube 151, the branch end for being installed on 151 flat tube section short side one side of variable diameter collecting pipe, which hooks to buckle into lock ring 123, consolidates single battery 121 It is fixed.
Thermally conductive flat tube 150 connects conducting with 151 short side side of variable diameter collecting pipe, and uses laser welding, and weld seam should meet Air-tightness requirement, two branch ends, which are hooked, is installed on variable diameter collecting pipe 151 short side one side using laser welding, and welding point need to meet tightly Hoop 123 keeps the thermally conductive peripheral frame of flat tube to surround the groups of intensity requirement of single battery 121 after buckling into.
Flexible elbow 154 is manufactured using ethylene propylene diene rubber.Ethylene propylene diene rubber has ozone-resistant, weatherability, chemically-resistant Product corrosivity, dense water, wearability, deformation resistance, acid resistance, alkali resistance are excellent, and heat-resisting 150 DEG C, low temperature resistant -50 DEG C, tension Strength character is superior.
In the present invention, for 121 heat-transfer character of multi-lamination structure single battery, provide and pole piece trimming end face monomer electricity The technical solution of the shell effective in pond 121, meanwhile, for the producing cause of the contact resistance difference of series-parallel contact, mention For the connection bolt pretightening reasonability and lasting stability of series-parallel connection sheet 130 and the pole of single battery 121.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously Limitations on the scope of the patent of the present invention therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention Protect range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.

Claims (10)

1. a kind of modified liquid cooling battery case, it is characterised in that:Including cabinet, battery modules arranged in the box body are set to The cover board that tank surface encapsulates battery modules, the battery modules are connected by several single batteries, if every group of single battery is Dry battery core series connection, several single batteries and several battery cores are respectively provided with connection sheet series connection;The cover board corresponds to every group of list Body battery is compressed equipped with shockproof strip, is enclosed outside every group of single battery equipped with thermally conductive flat tube, thermally conductive flat tube head and the tail are communicated with Collecting pipe, the cover board are fixed with to import tube body and export tube body and be connected to respectively with the collecting pipe of head and the tail position.
2. a kind of modified liquid cooling battery case according to claim 1, it is characterised in that:It is set between the cabinet and cover board Set gasket;The cabinet corresponds to cover board one side setting flanging, and gasket is set to flanging, and the cover board opens up mounting hole and passes through Gasket and cabinet lock onto cabinet by bolt, and the gasket corresponds to cover board one side setting raised line.
3. a kind of modified liquid cooling battery case according to claim 2, it is characterised in that:The side edge thereof bending is formed There is rectangle frame, the rectangle frame is that double-bending is arranged to form rectangle, corresponds to mounting hole and offers through-hole;The lid surface is opened Equipped with the connecting hole for fixing battery modules connection installation, the connecting hole is stretched by lid surface punching and forms flange, institute It states flange position and is welded with clip.
4. a kind of modified liquid cooling battery case according to claim 3, it is characterised in that:The gasket is elastic rubber Gasket is integrally formed setting with raised line, and the raised line is equipped with two, is set to gasket and is located at two sides of mounting hole.
5. a kind of modified liquid cooling battery case according to claim 1, it is characterised in that:The battery core is arranged for connecting Pole, setting lock-screw is connected connection sheet is fixed on the pole, and the lock-screw is arranged with spring pad for connection sheet It is locked;The threaded rod outer diameter of the lock-screw offers grooving.
6. a kind of modified liquid cooling battery case according to claim 5, it is characterised in that:The spring pad is ripple type bullet The setting of spring pad, is arranged for double-layer structure.
7. a kind of modified liquid cooling battery case according to claim 5, it is characterised in that:The connection sheet includes by several Electric conduction electrode-plate that conductive copper layers of foil is stacked and by quilt outside the insulation of electric conduction electrode-plate cladding, the insulation is outer to be equipped with notch by both ends Electric conduction electrode-plate is exposed.
8. a kind of modified liquid cooling battery case according to claim 7, it is characterised in that:The electric conduction electrode-plate exposed parts Connecting hole is offered, is arc setting outside the electric conduction electrode-plate and insulation, the insulation is outer to be opened up on one side away from notch There are counterbore, the counterbore and connecting hole for the setting of same axle center.
9. a kind of modified liquid cooling battery case according to claim 1, it is characterised in that:The battery core of the single battery is set There are rectangle long side and short side, the thermally conductive flat tube fits in rectangle short side, and single battery will be electric away from the one side setting of rectangle short side The fixed concatenated lock ring of core.
10. a kind of modified liquid cooling battery case according to claim 1, it is characterised in that:The thermally conductive flat tube is bilayer Structure setting, both ends, which are equipped with, is fixed on single battery, the collecting pipe and importing tube body and export tube body in 90-degree bending Communicating position is connected to equipped with flexible elbow.
CN201810956714.8A 2018-08-21 2018-08-21 A kind of modified liquid cooling battery case Pending CN108923008A (en)

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