CN106252549B - A kind of lightweight, safe battery core bracket and power battery pack - Google Patents
A kind of lightweight, safe battery core bracket and power battery pack Download PDFInfo
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- CN106252549B CN106252549B CN201610625686.2A CN201610625686A CN106252549B CN 106252549 B CN106252549 B CN 106252549B CN 201610625686 A CN201610625686 A CN 201610625686A CN 106252549 B CN106252549 B CN 106252549B
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- circular hole
- foaming
- battery core
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/256—Carrying devices, e.g. belts
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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
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6561—Gases
- H01M10/6562—Gases with free flow by convection only
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- 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 discloses a kind of lightweight, safe battery core bracket and power battery packs, wherein, rack body is a kind of non-ignitable foaming blocks of macromolecule resin, foaming agent and glass fibre, mountain flour by chemical foaming technology formation, and carbon dioxide, nitrogen, ammonia inert gas are full of in the bubble after foaming, uniformly there is the first circular hole successively penetrated through from top to bottom in the rack body, the first circular hole is formed together in rack body molding.Core component of the present invention includes foaming bracket, is made of organic resin by foam process, light, can reduce production cost, and effective cycling and reutilization.
Description
Technical field
The invention is related to power battery technology field, specifically a kind of lightweight battery core bracket and power battery pack.
Background technique
China's prevalence lithium-ion-power cell at present, ferric phosphate lithium cell refer to the lithium for using LiFePO4 as positive electrode
Ion battery.
There are many kinds of the positive electrodes of lithium ion battery, mainly there is cobalt acid lithium, LiMn2O4, lithium nickelate, ternary material, phosphoric acid
Iron lithium etc..Wherein cobalt acid lithium is the positive electrode that current most lithium ion batteries use, and other positive electrodes are due to more
Kind reason, there are no mass productions on the market at present.LiFePO4 is also one of lithium ion battery.From the principle of material
On say, LiFePO4 is also a kind of insertion/deintercalation process, this principle is identical with cobalt acid lithium, LiMn2O4.
Ferric phosphate lithium cell, same dangerous property.Because LiFePO4 is also a kind of lithium ion battery.From the original of material
It is said in reason, LiFePO4 is also a kind of insertion/deintercalation process, this principle is identical with cobalt acid lithium, LiMn2O4.And the change of lithium
It is very active to learn property, it is easy to burn, when battery charging and discharging, inside battery is persistently overheating, generated in activation process
Gas expansion, inner pressure of battery increase, and pressure reaches a certain level, if shell has scar, i.e., can rupture, cause leakage, it is on fire very
To explosion.
From the point of view of technical know-how, ferric phosphate lithium cell has the improvement of fraction to risk such as the explosions on fire of battery, but
It is not thorough very much, risk is equally prominent.
In all cases, external short-circuit of battery, internal short-circuit, overcharge and all there is the possibility caused danger.
How to dissolve above-mentioned risk, is the important research direction of this field.For this problem,
Summary of the invention
In order to solve the deficiencies in the prior art, the present invention provides a kind of lightweight, the battery core bracket and lithium cell power of safety
Battery pack finds a kind of cheap, antiknock, non-ignitable battery core bracket, meanwhile, convenient for assembling and production, modularization is compact-sized
Change, reduces use and manufacturing cost.
The technical solution adopted by the present invention to solve the technical problems are as follows:
A kind of lightweight, safe battery core bracket, which is characterized in that including rack body, the rack body is high score subtree
Rouge, foaming agent and glass fibre, mountain flour pass through a kind of non-ignitable foaming blocks that chemical foaming technology is formed, and the gas after foaming
It is full of carbon dioxide, nitrogen, ammonia inert gas in bubble, uniformly there is the successively penetrated through from top to bottom in the rack body
One circular hole, the first circular hole are formed together in rack body molding.
The mountain flour specification is -400 mesh of 200 mesh.
The macromolecule resin is polyurethane.
Busbar notch is respectively set between two adjacent the first circular holes on two end faces of rack body.
Cylinder lithium cell power battery pack, which is characterized in that including shell, organic foaming bracket, heat dissipation sleeve, upper cover and
Lower cover,
Organic foaming bracket is upper and lower penetrating foaming block structure, is evenly arranged in organic foaming bracket
Several the first circular holes penetrated through from top to bottom, on two end faces of organic foaming bracket between two adjacent the first circular holes
Busbar notch is respectively set；
The heat dissipation sleeve is the high copper alloy column of heat dissipation performance, and the heat dissipation sleeve includes anchor ring and support
Rib, the annulus face thickness are not more than 0.5 millimeter, interior table of the ribs towards internal and formation and lithium battery electric core cooperation
Face；
One heat dissipation sleeve is installed in each described first circular hole, a battery core is installed in each heat dissipation sleeve；
The shell is as made of the opposite fastening of the first, second sub- shell；First, second sub- shell is symmetrical structure,
And centre forms one by fastening mounting portion, organic foaming bracket is located in two sub- housing cavities；
It is provided with several and one-to-one second circular hole of the first circular hole on the first sub- shell, is embedded in the second circular hole
One collection gas jets, the collection gas jets face busbar pad, are arranged on the first sub- shell on the inside of collection gas jets
There are several protrusions for being used to support lithium cell end, form airflow channel between battery core sum aggregate gas jets,
It is provided with several and one-to-one third circular hole of the first circular hole on the second sub- shell, is embedded in third circular hole
One barometric damper piece, the memorial alloy sheet body that the barometric damper piece is made of fixed part and piece portion, in room temperature
Under state, piece portion is in close state, and after the first circular hole internal temperature reaches setting threshold values, piece portion is opened voluntarily；In air-flow
It adjusts and is provided with several support constructions for being used to support lithium cell end on the second sub- shell on the inside of valve block, in battery core and air-flow
It adjusts and forms airflow channel between valve block；
Connect and fix a upper cover and a lower cover respectively on two sub- shells, the closing in the upper cover be cold wind into
Mouthful, the interface in the lower cover is hot-blast outlet；
It is electrically connected respectively using current bus bars at the both ends of the battery core, and the busbar falls into busbar notch
Interior, the busbar is drawn by conducting wire from the cable outlet on shell after summarizing, and sealing is arranged at cable outlet
Structure.
It is intracavitary in the upper cover and lower cover to be provided with one-way ventilating film.
The groove for increasing air velocity is provided in two sub- housing outer surfaces in conjunction with upper cover and lower cover.
The busbar is drawn by conducting wire from the cable outlet on shell, and place is sealed at cable outlet
Reason.
The encapsulation process is thermoplastic welded seal.
At least double-layer seal is used at the first, second sub- casing mating face.
The upper cover and lower cover are engineering plastics moulding.
Lithium electric power vehicle, including vehicle frame, steering wheel, wheel, power battery assembly and control module, which is characterized in that institute
Stating power battery assembly is cylinder lithium cell power battery pack, and the cylinder lithium cell power battery pack is mounted on vehicle frame, institute
The cold wind import for stating power battery is pooled to the first total pipeline, and hot-blast outlet is pooled to the second total pipeline, wherein the first general pipeline connects
A blower, the first air inlet of connection and the second air inlet on the outside of blower are connect, wherein the first air inlet is located in driver's cab of sedan,
And it is provided with filter cotton at indoor first air inlet driving, the second air inlet is located in rear side luggage case, in the second air inlet
Filter device is provided at mouthful, the second total pipeline connects the first air outlet, the second air outlet and third air outlet, wherein first goes out
Air port is located in driver's cab of sedan, and the second air outlet is located in luggage case, and the second air outlet merges with second air inlet, the
Three air outlets are located at frame chassis.
The beneficial effects of the present invention are:
Core component includes foaming bracket, is made of organic resin by foam process, light, can reduce and be produced into
This, and effective cycling and reutilization.
Organic foaming bracket has non-ignitable characteristic, can be to neighbouring electricity in the fever of a certain battery core, natural situation
Core forms effective isolation, meets A grades of fireproof requirements.
Organic foaming bracket uses carbon dioxide, nitrogen physisorption foaming technique, while foaming, carbon dioxide, nitrogen
It is covered by bubble, after bracket hits the comminuted self-destruction of generation, can discharge, form anaerobic environment in shell, prevent
Chain explosion occurs for battery assembly.
The capability of antidetonance is good, and during battery core self-destruction, comminuted self-destruction can occur for foaming bracket, absorbs explosion energy,
Impact energy is absorbed, the security performance of new energy vehicle is improved.
Organic foaming bracket of core component is inorganic heatproof components, and either high temperature resistant, intensity, insulating properties can expire
The requirement of sufficient lithium battery.
All it is connected structure convenient for assembling, assembly efficiency is improved, convenient for the maintenance in later period.
Cold wind passes through around each battery core monomer according to design route, and the space in inner cavity is larger, can make
It obtains wind speed to slow down, generates heat with battery core carry out the preferable heat transfer effect of heat exchange generation to the greatest extent.
Heat dissipation sleeve is contacted with battery core, can rapidly shift the heat of battery core, and the heat of generation is also pulled away, and is formed more
Good heat exchange effect.
It is light, the total weight of power battery is reduced, reduces self weight at least 20% than traditional battery bracket, cost reduces by one
Half or more.
Detailed description of the invention
Fig. 1 is the perspective view of cylindrical lithium battery core.
Fig. 2 is the perspective view of heat dissipation sleeve.
Fig. 3 is the top view of heat dissipation sleeve.
Fig. 4 is the perspective view of organic foaming bracket.
Fig. 5 is the perspective view (front) of the first sub- shell.
Fig. 6 is the perspective view (back side) of the first sub- shell.
Fig. 7 is perspective view of the invention.
Fig. 8 is cross-sectional view of the present invention.
Fig. 9 is that Fig. 7 omits the perspective view after upper cover.
Figure 10 is that Fig. 9 omits the perspective view after the first sub- shell.
Figure 11 is the cooperation schematic diagram of organic foaming bracket and battery core.
Figure 12 is the perspective view of upper cover.
Figure 13 is the perspective view of barometric damper piece.
Figure 14 is arrangement schematic diagram of this battery heat removal system in vehicle.
Figure 15 is the outlet and inlet wind path schematic diagram of battery heat removal system.
In figure: 1 shell, 11 first sub- shells, 111 collection gas jets, 12 second sub- shells, 121 barometric damper pieces, 1211
Fixed part, 1212 portions, 13 cable outlets, 14 mounting portions, 2 organic foaming brackets, 21 first circular holes, 22 busbar notches, 3
Radiate sleeve, 31 anchor rings, 32 ribs, 4 busbars, 5 upper covers, 5 ' lower covers, 51 cold wind imports, 52 hot-blast outlets, and 53 is unidirectional
Ventilated membrane, 6 battery cores, 71 first total pipelines, 72 second total pipelines, 7 blowers, 711 first air inlets, 712 second air inlets, 721
First air outlet, 722 second air outlets, 723 third air outlets, 73 gate valves.
Specific embodiment
As shown in Fig. 1 to Figure 15, for existing defect, protection main body of the invention is as follows:
Exploitation is a kind of lithium cell power battery assembly, and existing cylinder type lithium battery has two kinds during the installation process
Situation, one is direct film materials to be bundled, formed power battery pack, this power battery pack the problem is that, hold
Easily accumulation heat, causes temperature to increase, and self-expanding, leakage, spontaneous combustion, self-destruction, safety is poor, for this problem, existing solution
Certainly scheme is to increase a frame, and existing frame has thermal expansion and contraction still obvious, such as Chinese patent
The scheme announced in CN204927374U, wherein bracket uses moulding, has the function of insulating and position, can be convenient cylinder
The assembly of shape lithium battery, still, above-mentioned structure do not form air duct, and the heat dissipation of battery core is not solved fundamentally, and deposits
In following problems: bracket is plastic part, have inflammable characteristic, although plastic density is lower than metal, bracket be it is solid,
It is self-possessed larger, accounts for about 1/10th or so of battery core weight, in addition antidetonation sound insulation effect is also bad.
The technical problem to be solved is:
Problem one: during power battery work, there are heat expansion effect, the swell incremenies of multiple battery cores to be accumulated at for single battery core
In battery pack, huge deformation just will form, cause the dislocation of electrode position, current solution is that electrode design is at U
Type, for making up displacement and deformation between battery core.
Problem two: in the case that short circuit occurs for single battery core, due to what is be proximate between battery core, and battery core and busbar
Material is lithium material, high temperature itself is inflammable, can cause the detonation of the battery core between adjacent.
Problem three: cooling wind is in unordered flow regime, cannot effectively be cooled down for battery core, cannot be in battery core
It is formed about uniform wind field, the non-uniform temperature at each battery core causes battery core internal resistance inconsistent, and power consumption increases.
Problem four, from great, lithium electricity battery core density itself is big, adds metal shell, be self-possessed bigger, self weight account for vehicle body from
More than half of weight.
Problem five, the costs of manufacture such as bracket, metal-back are high.
Based on the description above, cylinder lithium cell power battery assembly provided by the invention, and cool down to battery
Wind adjustment structure.
Power battery assembly includes shell 1, organic foaming bracket 2, heat dissipation sleeve 3, upper cover 5, lower cover 5 '.
Shell 1 uses moulding, is to be formed by the opposite installation of upper and lower two sub- shells, and use bolt fastening, internal
A rectangular space is formed, inside is for installing battery core.
For the sake of safety, metallic stamping pieces are can also be used in shell, have higher intensity.
Organic foaming bracket 2 is upper and lower penetrating structure, is polyurethane, glass fibre, mountain flour, foaming agent material, and pass through
A kind of foamed material for crossing chemical foaming technology formation, plastic melt is full of indifferent gas such as carbon dioxide, nitrogen, ammonias after foaming
Body.
The effect of mountain flour is to be mixed with polyurethane, reduces the inflammability of polyurethane, and is conducive to forming packet slurry,
Flame retardant effect is obvious.The production intensity that chemical blowing is usually used in polyurethane foam plastics is higher than traditional foamed material, using mould
Tool production, is provided with the first circular hole 21 successively penetrated through from top to bottom, circular hole is integrally formed in organic foaming bracket.
Organic foaming bracket 2 is foamed material, has the characteristics that lightweight, and be inorganic material, and be foaming structure, can be with
Effective buffering battery core monomer explosion bring impact, has non-ignitable performance, and the inert gas of bubble inner sealing is conducive to prevent
It is fiery, anti-riot, it can satisfy fire prevention, explosion-proof requirement.
The sleeve 3 that radiates is constructed using copper alloy radiator structure for extrusion molding, including anchor ring 31 and ribs 32,
Middle annular surface uses superthin structure, and thickness is not more than 0.5 millimeter, and ribs form one towards inside, and in ribs inner surface
The discontinuous circle of a annular, discontinuous circle is used for and lithium battery electric core cooperation, discontinuous circle have certain deformability, can be with
Simplify assembly work, can effectively increase heat dissipation area, be conducive to the heat dissipation and heat exchange of battery core, the heat that battery core generates is same
Step releases.
During sharp impacts occur, a large amount of collision energy is can be absorbed in organic comminuted cracking of foaming bracket 2.
Organic foaming bracket 2 is made using carbon dioxide, nitrogen gas foaming technique, is had light, heat-insulated, explosion-proof, no
The characteristics of combustion.
It can according to need, increase haydite during foaming, increase the overall stiffness of bracket, wherein the appearance of haydite
Feature is largely rounded or oval-shaped ball, the partial size of haydite are generally the maximum partial size of 5 ㎜ to 20 ㎜ as 25 ㎜.The present invention
Used in haydite be baking-free ceramicite, belong to light material, Lightness is the most important in many excellent performances of haydite, pottery
The inner structural features of grain are in fine and closely woven honeycomb micropore, these micropores are all case type, rather than communicate-types.
The fine particle fraction of haydite is known as pottery sand, in fine grained of many of the haydite less than 10 ㎜, uses in production
Screening machine screens out this part fine particle to come, traditionally referred to as pottery sand.The density of pottery sand is slightly higher, chemical and thermal stability
It is good.
The present invention makes full use of this characteristic of haydite, support, explosion-proof, fire safety problem in solution power battery.
In common collision process, organic foaming bracket has good damping, cushion performance, can be effectively protected interior
The battery core in portion.
Effective setting busbar notch 22 converges for installing busbar respectively on 2 two end faces of organic foaming bracket
The stream non-contact position of item is embedded in inside, can effectively be formed and be protected to busbar, fire-retardant, improves general safety performance.
Organic foaming bracket is heat insulator and insulator, can effectively be insulated.
Two sub- shells are coated on organic 2 two sides of foaming bracket, and form a cladding in the outside of organic foaming bracket
Body, two sub- shells are respectively labeled as the first sub- shell 11 and the second sub- shell 12, are formed and are protected to above-mentioned organic foaming bracket
Shield, partition, avoids soaking, while being conducive to improve whole resistance to compression, impact resistant capability.
The shell that sub- shell is made of four sides and a top surface is engineering plastics material, is arranged in open section
One fastening mounting portion 14 is attached for the connection of two sub- shells using bolt, and the effect after connection refers to Fig. 7.
Sub- shell has protective performance, carries out security protection to bracket therein.
Several second circular holes are provided on the top surface of the first sub- shell 11, a collection gas jets are embedded in the second circular hole
111, the structures of the collection gas jets has a circular nozzle as shown in figure 5, collection gas jets are circle, busbar 4 from nozzle just
Good opposite busbar pad, when the air pressure in air inlet pipe is higher, air-flow can be sprayed from collection gas jets, and act on confluence
At the pad of item and electrode, so that the temperature at pad maintains the temperature be conducive at pad compared with low state and reduces.
The inner surface of first sub- shell of the inside of collection gas jets 111 is provided with several protrusions 112, is used to support lithium electricity
The end of core forms airflow channel between battery core sum aggregate gas jets 11, with reference to Fig. 8 and Fig. 5.
A barometric damper piece 121 is embedded in the third circular hole of the second sub- shell 12, which is
The plates of one memorial alloy material, with reference to Figure 13, including fixed part 1211 and piece portion 1212, wherein piece portion and fixed part are one
Body punch forming, using memorial alloy material, under normal temperature state, piece portion is equivalent to a gate, is in close state, only
There is trace gas stream to pass through, after internal temperature reaches the variation threshold values of the alloy, will do it opening, form a kind of opening state.
Air-flow accelerates, with reference to Figure 13.
The third circular hole interior surface of second sub- shell 12 is provided with the support construction of overshooting shape, on the first sub- shell
112 structure of protrusion it is identical, it is uniformly distributed, form airflow channel between battery core and the second sub- shell.
Above-mentioned structure can be to especially cooled down at busbar and electrode welding point (calorific value herein be maximum), and leads to
It crosses the barometric damper piece with memory function and air-flow size is adjusted.
Guaranteed at internal battery core using at least double-layer seal using rubber seal at two sub- casing mating faces
In sealing state, avoids soaking and make moist.
Connecting and fixing a upper cover 5 and a lower cover 5 ' respectively on two sub- shells, wherein upper and lower cover structure is identical,
It is illustrated by taking upper cover as an example, upper cover, preferably engineering plastics moulding, generally the housing shape of rectangle, wherein in one end of cover
End has a closing in, and is designed into round closing in, and the closing in upper cover 5 is cold wind import 51.
It is intracavitary in above-mentioned upper cover and lower cover to be provided with one-way ventilating film 53, it can permit air and pass through, prevent moisture
Son passes through, so that organic foaming bracket and inside are dry, and have 24 hours waterproof performances on the whole, power can be improved
The fordability of battery improves the security performance of battery.
It is fluted in two sub- housing outer surface settings in conjunction with upper cover and lower cover, form airflow channel.
Lower cover 5 ' is fixed in lower contact, is symmetrical arranged to upper cover, and the interface in lower cover is round closing in, is gone out for hot wind
Mouth 52.
A cupro-nickel composite sheet is respectively welded at the both ends of above-mentioned battery core, current bus bars 4 are formed, between adjacent
The connection of battery core 6, wherein cupro-nickel composite sheet is straight sheet metal, and is pad at the both ends of cupro-nickel composite sheet, passes through welding
Two electrodes of mode and above-mentioned battery core be electrically connected.
Above-mentioned busbar is fastened on the busbar notch 22 of organic foaming bracket, and finally, busbar passes through conducting wire from shell
Cable outlet 13 on body is drawn, and processing is sealed at cable outlet 13, for example, thermoplastic welding is closed.
The Light deformation of a bending can be set in position of the above-mentioned busbar between pad two-by-two, forms local bending
Effect can fall off to avoid the pad of busbar and battery core pad, with reference to Figure 11.
Above-mentioned multiple battery cores 6 form a column by way of in parallel, form a unit, with reference to Figure 10, then unit
Between connect, form a power battery pack.
It is connected in parallel to form car power source between multiple power battery packs.
One power battery assembly is integrated using a shell, with reference to Fig. 7.
It is connected on the first branch pipe in each cold wind import 51 by a bend pipe, multiple first branch pipes connect after collecting
Onto blast pipe, each hot-blast outlet 52 is connected in the second branch pipe by a bend pipe, and multiple second branch pipes are connected to
At discharge pipe.
A kind of electrocar, is provided with power battery, and the different location of vehicle frame, Duo Gedong is arranged in power battery pack
The blast pipe of power battery is pooled to the first total pipeline 71, and discharge pipe is pooled to the second total pipeline 72, wherein the first general pipeline connection one
A blower 7, blower outside connect two air inlets, to be labeled as the first air inlet 711 and the second air inlet convenient for distinguishing
712, wherein the first air inlet 711 is located in driver's cab of sedan, and is provided with filter cotton at indoor first air inlet driving,
Second air inlet 712 is located in rear side luggage case, is provided with filter device at the second air inlet.The filter device is three-level mistake
Precisely filtering is realized in filter, including filter cotton, filter cloth and filter.
Second total pipeline 72 connects three air outlets, to be labeled as the first air outlet 721, the second air outlet convenient for distinguishing
722 and third air outlet 723, wherein the first air outlet is located in driver's cab of sedan, the second air outlet is located in luggage case, and with
The second above-mentioned air inlet merges, and carries out blowback to filter device, has certain cleaning effect, third air outlet 723 is located at
At frame chassis, for emptying.
Above-mentioned three air outlets and an air inlet are provided with gate valve 73, gate valve is solenoid valve, passes through solenoid valve
Switching, for controlling the switching in air duct.
In winter, when outdoor is lower than 0 degree Celsius, initial phase needs to heat battery battery core, and circulated air is first
Air inlet air inlet, acquisition is to drive indoor air, is returned in driver's cabin to the hot wind after battery cooling, circulation in formation
Mode.
In summer, when outdoor temperature is higher than 30 degrees Celsius, circulated air is entered the wind in the first air inlet, and acquisition is in driver's cabin
Air form interior suction outlet mode to the hot wind after battery cooling by third air outlet outlet.
In the seasons such as spring or autumn, outdoor temperature is entered the wind, then from third at more than ten degrees Celsius from the second air inlet
Air outlet outlet forms circulation pattern.
By the selection of above-mentioned multiple groups mode, round-the-clock work may be implemented.
Further, cooperate battery management system, a temperature acquisition element, chamber can be integrated on the inside of above-mentioned lower cover
Interior temperature, the blow rate required by controlling blower control the temperature of battery.
By above-mentioned implementation, the temperature of battery core can be controlled in the zone of reasonableness between 20 to 40 degree, and each
The uniform temperature fields of battery core are consistent.
The above-described embodiments are merely illustrative of preferred embodiments of the present invention, not to model of the invention
It encloses and is defined, without departing from the spirit of the design of the present invention, relevant technical staff in the field is to various changes of the invention
Shape and improvement should all expand in the protection scope as determined by claims of the present invention.
Claims (5)
1. power battery pack, which is characterized in that including shell (1), organic foaming bracket (2), heat dissipation sleeve (3), upper cover (5) and
Lower cover (5 '),
Organic foaming bracket (2) includes rack body, and the rack body is macromolecule resin, foaming agent and glass fibers
Dimension, mountain flour pass through a kind of non-ignitable foaming blocks that chemical foaming technology is formed, and inert gas is full of in the bubble after foaming,
The inert gas is carbon dioxide or nitrogen, and the first circle successively penetrated through from top to bottom is uniformly provided in the rack body
Hole (21), the first circular hole are formed together in rack body molding, wherein
Heat dissipation sleeve (3) is the high copper alloy column of heat dissipation performance, the heat dissipation sleeve (3) include anchor ring (31) and
Ribs (32), the annulus face thickness are not more than 0.5 millimeter, and the ribs are matched towards internal and formation with lithium battery electric core
The inner surface of conjunction；
One heat dissipation sleeve is installed in each described first circular hole, a battery core is installed in each heat dissipation sleeve；
The shell (1) is as made of the opposite fastening of the first, second sub- shell；First, second sub- shell is symmetrical structure, and
Centre forms one by fastening mounting portion (14), and organic foaming bracket is located in two sub- housing cavities；
It is provided with several and one-to-one second circular hole of the first circular hole on the first sub- shell (11), is embedded in the second circular hole
One collection gas jets (111), the collection gas jets face busbar pad, the first son on the inside of collection gas jets (111)
It is provided with several protrusions (112) for being used to support lithium cell end on shell, forms gas between battery core sum aggregate gas jets (11)
Circulation road,
It is provided with several and one-to-one third circular hole of the first circular hole on the second sub- shell (12), is embedded in third circular hole
One barometric damper piece (121), the barometric damper piece (121) are made of fixed part (1211) and piece portion (1212)
Memorial alloy sheet body, under normal temperature state, piece portion is in close state, when the first circular hole internal temperature reaches setting threshold values
Afterwards, piece portion opens voluntarily；It is provided on the second sub- shell on the inside of barometric damper piece (121) and several is used to support lithium cell
The support construction of end forms airflow channel between battery core and barometric damper piece；
Connect and fix a upper cover (5) and a lower cover (5 ') respectively on two sub- shells, the closing on the upper cover (5) is
Cold wind import (51), the interface on the lower cover (5 ') are hot-blast outlet (52)；
Current bus bars (4) are used to be electrically connected respectively at the both ends of the battery core, and the busbar is fallen into busbar notch,
The busbar is drawn by conducting wire from the cable outlet (13) on shell after summarizing, and is arranged at cable outlet (13)
Sealing structure.
2. power battery pack according to claim 1, which is characterized in that intracavitary in the upper cover and lower cover to be provided with unidirectionally
Ventilated membrane (53).
3. power battery pack according to claim 1, which is characterized in that in two sub- shells in conjunction with upper cover and lower cover
Outer surface is provided with the groove for increasing air velocity.
4. power battery pack according to claim 1, which is characterized in that the busbar passes through conducting wire from the electricity on shell
Cable outlet (13) is drawn, and is sealed processing at cable outlet (13).
5. power battery pack according to claim 1, which is characterized in that used at the first, second sub- casing mating face
At least double-layer seal.
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| CN106252549B true CN106252549B (en) | 2019-03-19 |
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Cited By (1)
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| US20240120590A1 (en) * | 2022-10-07 | 2024-04-11 | Archer Aviation, Inc. | Systems and methods for improved battery assemblies for evtol aircraft |
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| CN108321325B (en) * | 2017-12-31 | 2021-04-13 | 中国电子科技集团公司第十八研究所 | Lightweight cylindrical lithium ion battery pack device |
| DE102019121669A1 (en) * | 2019-08-12 | 2021-02-18 | Lisa Dräxlmaier GmbH | ACCEPTANCE STRUCTURE FOR BATTERY CELLS AND METHOD FOR PRODUCING A RECEPTION STRUCTURE FOR BATTERY CELLS |
| WO2022109788A1 (en) * | 2020-11-24 | 2022-06-02 | 江苏金彭集团有限公司 | High-safety electric vehicle |
| CN112787011B (en) * | 2021-01-22 | 2022-05-06 | 合肥国轩高科动力能源有限公司 | Battery cell unit and power battery module |
| DE102021102975A1 (en) * | 2021-02-09 | 2022-08-11 | Lisa Dräxlmaier GmbH | MODULE HOUSING, METHOD OF MAKING A MODULE HOUSING AND BATTERY MODULE |
| CN117673642B (en) * | 2024-01-31 | 2024-04-02 | 深圳市明电环球科技有限公司 | Lithium battery sealing structure |
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