CN106299221B - Lithium cell partition and its manufacturing method - Google Patents
Lithium cell partition and its manufacturing method Download PDFInfo
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- CN106299221B CN106299221B CN201610789442.8A CN201610789442A CN106299221B CN 106299221 B CN106299221 B CN 106299221B CN 201610789442 A CN201610789442 A CN 201610789442A CN 106299221 B CN106299221 B CN 106299221B
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- foaming body
- skeleton
- water
- sides
- foaming
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Classifications
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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
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/409—Separators, membranes or diaphragms characterised by the material
-
- 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
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/403—Manufacturing processes of separators, membranes or diaphragms
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention discloses a kind of lithium cell partition and its manufacturing methods, wherein, including foaming body and skeleton, the skeleton is metallic stamping pieces, and the Z-shaped bending being evenly arranged is formed to two sides by way of punching press on the skeleton, the end of the Z-shaped bending is the planar support point for cooperating with battery core；The foaming body is compounded on skeleton and the two sides main surface of foaming body is located at the inside of Z-shaped bending；The foaming body is the certain thickness foamed board formed by benchmark containing ordinary portland cement, ferrous aluminate cement, glass bead, mountain flour, hydrogen peroxide, water-reducing agent, water and the foamed technique of rubber powder；The main surface layer in the two sides of foaming body is equipped with a web support layer；A coating layer is sprayed on the surface of the foaming body.This partition combines the two-fold advantage of inorganic foamed body and metal plate, and metal plate has the function of shock resistance, elastic force, support, and the inorganic foamed performance requirement with antiknock has very wide use space.
Description
Technical field
The invention is related to battery core demarcation plate technical field, specifically lithium cell partition and battery pack.
Background technique
Increasingly increased worry is influenced due to the uncertainty on oil price and on the environment of hydrocarbon fuels, thus
In the use for changing energy and using there are very big significances in the alternative energy.It is special that this worry has automobile
Influence because usually automobile using a sizable amount the hydrocarbon fuel derived from petroleum and can produce different pollutions
Object.In this way, automobile industry is seeking to develop hybrid power and electronic vehicle always.
Hybrid power and electronic vehicle is both utilized electrical storage, often battery and other be based on chemistry
The electric storage system of product.For example, in the vehicle of hybrid power, the battery discharge when vehicle is used at that time, but it can be with
Restored during brake by energy or is charged by the generator of compact internal combustion engine driving.For electric vehicle,
Battery discharges in use and is plugged on a power supply again when they do not use middle typically via by them
Charging.
In each case, it the electric discharge of these electric storage elements and recharges and produces heat, which can increase
Temperature in the electricity storage element.Increased temperature can make battery and other storage element degradations based on chemicals, thus
Reduce the service life of battery.In addition, excessively high temperature can make the component degradation around these electric storage elements, including shell,
And Embedding Material, and can even cause fire in extreme situations.
In this way, a kind of improved electric storage element it will be desirable that.
Summary of the invention
In order to solve the deficiencies in the prior art, the present invention provides a kind of lithium cell partition and its manufacturing method, for existing
Lithium battery assembly technology, solve to ask between existing battery core using low, inflammable, the explosive technology of plastic septum security performance
Topic, while a kind of cheap, quick manufacturing method being provided.
The technical solution adopted by the present invention to solve the technical problems are as follows:
Lithium cell partition, which is characterized in that including foaming body and skeleton, the skeleton is metallic stamping pieces, and described
The Z-shaped bending that is evenly arranged is formed to two sides by way of punching press on skeleton, and the end of the Z-shaped bending is to be used for and battery core
The planar support point of cooperation；The foaming body is compounded on skeleton and the two sides main surface of foaming body is located at the interior of Z-shaped bending
Portion；
The foaming body is by ordinary portland cement 230kg, ferrous aluminate cement 20kg, glass bead 30kg, mountain flour
The certain thickness foamed board that 1kg, hydrogen peroxide 10kg, water-reducing agent 1kg, water 75kg and the foamed technique of rubber powder 0.1kg are formed；
The two sides main surface of the foaming body is equipped with a web support layer；
Or/and a coating layer is sprayed on the surface of the foaming body.
Further, the web support layer is one of non-woven fabrics, glass fabric.
Further, the dope layer is one of fireproof coating, fire resistant coating.
The manufacturing method of lithium cell partition, which is characterized in that
Firstly, skeleton blank required for being obtained using metal plate punch-forming mold, is had on a metal plate to two sides
Then the 90 degree of bendings extended place skeleton blank stand-by in a mold；
Then, the configuration of foam material is carried out, the specific process steps are as follows:
Step 1), ingredient: according to ordinary portland cement 230kg, ferrous aluminate cement 20kg, glass bead 30kg, stone
The ratio of powder 1kg, hydrogen peroxide 10kg, water-reducing agent 1kg, water 75kg, rubber powder 0.1kg is stocked up, cement and mountain flour that bulk vehicle ships,
Glass bead is separately stored in cementing tank, passes through the accurate automatic meter of microcomputer control to above-mentioned each raw material using electronic scale weighing
Measure ingredient；
Step 2), automatic mixed stirring: use high-speed mixer by ordinary portland cement, ferrous aluminate cement, vitreous
Microballon, mountain flour, rubber powder, water, water-reducing agent are added double with being added in high-speed mixer after stirring 2 minutes into the slurry being stirred
Oxygen water；
Step 3), casting: stirring 8 to 12 seconds after hydrogen peroxide is added, steam-operating valve opened, and slurry is made to inject the mold
In；
Step 4), foaming: slurry automatically generates bubble in mold, and is full of space；
Intensity has reached 5Mpa after thermostatic curing 24 hours in step 5), curing kilns, then by 90 on skeleton blank
Degree bending carries out bending again and forms Z-shaped bending；
A coating layer is sprayed on the surface of the foaming body after continuing maintenance 24 hours.
It further, further include diene elastomer, fluoroelastomer, polyethylene particle or polypropylene in the ingredient
Grain.
Further, the mold includes the molding space of a channel-shaped, and molding space trench bottom be arranged
For accommodating 90 degree of bending jacks on skeleton blank.
Further, in step 4 further include a process in foaming body surface fitting web support layer.
A kind of lithium battery pack, including including battery core, battery pack housing and partition, wherein the preferred Al-alloy casing of shell, electricity
Core is square electric cell, and partition and the battery core are intervally installed and are mounted in shell, uses positioning strip at the end of partition
It is fixed, and forms airflow channel between battery core and shell, one end of all airflow channels is collected for airflow inlet, another
Collect for air stream outlet at end.
The positioning strip is strip, and section is T shape, and is provided on positioning strip and fastens with the skeleton edge
Elongated slot.
The beneficial effects of the present invention are:
1, it has the advantages of simple structure and easy realization, can be good at realizing mass, flow line production.
2, at low cost, it is made of foaming technique and metal stamping plate, effect is good.
3, the capability of antidetonance is good, and the application of inorganic foamed technology has the effect of non-ignitable, antiknock, wide adaptability.
4, this partition combines the two-fold advantage of inorganic foamed body and metal plate, and metal plate has shock resistance, elastic force, support
Effect, the inorganic foamed performance requirement with antiknock, have very wide use space.
5, with certain shock resistance, the damage during colliding for battery core can be buffered.
Detailed description of the invention
Fig. 1 is the principle of the present invention figure.
Fig. 2 is the schematic diagram of single airflow channel.
Fig. 3 is the perspective view of skeleton.
Fig. 4 is the perspective view of partition.
Fig. 5 is partial enlarged view at A in Fig. 4.
Fig. 6 is the perspective view of skeleton blank.
Fig. 7 is the schematic diagram of mold.
In figure: 1 battery core, 2 partitions, 21 foaming bodies, 22 skeletons, 221Z shape bending, 222 supporting points,
22 ' skeleton blanks, 221 ' 90 degree of bendings, 23 airflow channels, 3 shells, 4 positioning strips, 51 molding spaces, 52 90
Spend bending jack.
Specific embodiment
It is provided by the invention in a specific embodiment such as Fig. 1 to Fig. 7, a kind of energy supply lithium battery pack, packet
Battery core 1, battery pack housing 3 and partition 2 are included, wherein partition 2 is combined by foaming body 21 and metallic framework 22.
The preferred Al-alloy casing of shell 3.
In an example, which can have a kind of desirable thermal stability, flexibility and explosion-proof performance.
In addition, the main surface layer in the two sides of the foaming body may include a kind of fabric support, such as non-woven fabrics, glass fabric etc..Specifically
Ground says that the fabric support is disposed on foaming body, to enhance its intensity, shock resistance and processability.
It further include the skeleton 22 of an alloy, the skeleton of the alloy is metallic stamping pieces, using an alloy plate, especially
A kind of plate with good stamping performance, formed by way of punching press it is outstanding raised to two sides, protrusion be Z-shaped bending
221, which is formed uniformly, so that the two sides of plate form several supporting points 222, the presence of the supporting point can be with battery core
Between formed contact.
Above-mentioned skeleton 22 and foaming body 21 carries out being compounded to form a species complex, with reference to Fig. 4 and Fig. 5, wherein foaming body
The main surface of 21 two sides is located at the inside of Z-shaped bending.When the supporting point 222 of two sides and battery core form point-like support, in battery core 1
An airflow channel 23 is formed between 21 main surface of main surface and foaming body.It, can when thering is high-temperature gas to pass through in airflow channel
To be heated to battery core 1, when thering is cold air to pass through in airflow channel, battery core can be cooled down.
In a specific example, foaming body 21 and skeleton 22 the production method is as follows:
Skeleton blank 22 ' required for obtaining first with metal plate punch-forming mold, middle skeleton blank is such as Fig. 3
It is shown, i.e., the 90 degree of bendings 221 ' extended to two sides are gone out on a metal plate, and then skeleton is placed in a mold.
Then the configuration of 21 material of foaming body is carried out, raw material proportioning:
Benchmark 230kg containing ordinary portland cement；It is as follows that other raw materials account for ordinary portland cement mass ratio: ferrous aluminate
Cement 20kg, glass bead 30kg, mountain flour 1kg, hydrogen peroxide 10kg, water-reducing agent 1kg, water 75kg, rubber powder 0.1kg.
Itself the specific process steps are as follows:
Step 1), ingredient: stocking up according to aforementioned proportion, and cement and mountain flour that bulk vehicle ships, glass bead store respectively
In cementing tank, accurate automatic gauge ingredient is controlled by microcomputer to above-mentioned each raw material using electronic scale weighing；
Step 2), automatic mixed stirring: use high-speed mixer by ordinary portland cement, ferrous aluminate cement, vitreous
Microballon, mountain flour, rubber powder, water, water-reducing agent are added double with being added in high-speed mixer after stirring 2 minutes into the slurry being stirred
Oxygen water；
Step 3), casting: stirring 8-12 seconds after hydrogen peroxide is added, steam-operating valve opened, and slurry is made to inject above-mentioned mold
In；
Step 4), foaming: slurry automatically generates bubble in mold, and is full of space；
Intensity has reached 5Mpa after thermostatic curing 24 hours in step 5), curing kilns, then by 90 on skeleton blank
Degree bending carries out bending again and forms Z-shaped supporting point.And between passing through between the supporting point for controlling the position control two sides of bending
Away from, achieve the purpose that control block board thickness.
Continued maintenance 24 as a child.
A small amount of diene elastomer, fluoroelastomer, polyethylene particle, polypropylene can be increased in above-mentioned formula converges
Particle etc. can further reduce the density of above-mentioned foaming layer, provide a kind of foaming body of more lightweight.
Above-mentioned mold, the molding space 51 including a channel-shaped are provided in the trench bottom of mold and are used for reference to Fig. 7
90 degree of bending jacks 52 on skeleton blank are accommodated, a partition is formed after body formed and hardening of foaming, then again rolls over 90 degree
90 degree of curved inverse bending forms z shape bending, can be realized using metal plate bending machine.
Mixing between above-mentioned each component can use mixing arrangement, and such as a dough mixing machine or concrete stir
Device.
In addition, may include filler class and additive kind in the foaming body.For example, the filler may include one kind
Thermal conductivity filler.A kind of illustrative heat-conducting layer includes a kind of metal oxide, a kind of metal nitride, a kind of metallic carbide
Object or their any combination.
A kind of illustrative metal oxide includes silica, aluminium oxide, hibbsite, zinc oxide, zirconium oxide, oxidation
Magnesium or their any combination.
A kind of illustrative nonmetal object includes graphite material.In particular, selecting thermal conductivity filler for thermal conductivity.
For example, the thermal conductivity of the filler can be at least 30W/mK.
In addition, the foaming body can also include other additive kinds and filler class.For example, the foaming body can wrap
Include UV stabilizer class.
It can be to include being suitable for wrapping based on the magnitude within the scope of the 1.0wt% to 40wt% of the gross weight of the foaming body 21
It includes in the intracorporal fire retardant of the foaming.A kind of illustrative fire retardant can be intumescence or rather than intumescence.Typically, this
A little fire retardants be free from halogen and be no antimony.The example of suitable fire retardant includes being based on organic phosphorus compound or red
Those of non-halogenated fire retardant of phosphate material.The example of the suitable fire retardant also to work as thermal conductivity filler includes
Aluminium hydroxide and magnesium hydroxide.In addition it is possible to use the blend of a variety of fire retardants.
The intracorporal hole of the foaming can be due to foaming before solidification or solidification, and useful foaming agent includes the gas of entrainment
Body/high pressure injectable gas；Foaming agent, such as chemical foaming agent and physical blowing agent；Expansion or unexpanded polymerization
Object bubble；And their multiple combinations.For example, the hole of the foaming body can be because of using a kind of inert gas (such as nitrogen, dioxy
Change carbon, air, another gas or their any group) foaming and formed.In another example, the foaming body this
Some holes can due to a kind of physical blowing agent, (such as hydro carbons, ethers, esters and partially halogenated hydro carbons, ethers and esters, etc., or
Person their any combination) and formed.
Upon formation, the foam of foaming body 21 can be a kind of closed-cell foam or can be a kind of bubble of open bore
Foam.In particular, the foam can be a kind of closed-cell foam.In addition, the density that the foam can have is no more than 1500kg/
m3, as density is not more than 1200kg/m3, it is not more than 1000kg/m3, or even density is not more than 800kg/m3.In an example
In, which is at least 20kg/m3, such as at least 100kg/m3, or even at least 200kg/m3。
In addition to desirable low-density, the foam of foaming body can have a kind of desirable rigidity, have branch
Support performance.For example, for example, the Xiao A hardness of the foam can be not less than 60, in an additional example.
Aforementioned barriers 2 are particularly useful in surrounding battery and two adjacent battery cores are isolated.A kind of typical
In automobile application, multiple battery cores, which are loaded into a shell, to be packaged.Aforementioned barriers are especially suitable for individually by each electricity
Core is isolated, and independent space is formed.
Specifically, which has segmentation performance, is similar to room one by one, places a battery core in each room,
During battery core is discharged, the influence between adjacent battery core is avoided, especially self-destruction, spontaneous combustion etc. occurs in a battery core wherein
When fortuitous event, inorganic foamed sheet material itself has the function of flame proof, prevents from causing to damage to neighbouring battery core.
In addition, in the case where strong shock, impact fragility rupture can occur for the foaming body, impact energy is reduced to electricity
The damage of core.
Skeleton in the partition is in contact with these battery cores, and skeleton sheet has had certain elasticity as alloy material, electricity
For core there are a degree of thermal expansion during charge and discharge, which can be by during electric discharge or recharging
The increased temperature of electrical storage device and cause, the deformation of skeleton itself can offset this part thermal expansion so that in battery pack
Overall volume is maintained at certain.
One vehicle includes an electric system.Electric system includes an energy supply part, which includes
Multiple energy accumulating devices, such as battery pack.Each battery pack is made of shell 3, battery core and partition, is formed a kind of with solid
The component in space.
Partition forms a kind of support of separate type between two adjacent battery cores and between battery core and shell, and
Form airflow channel.
During assembling above structure, it is fixed at the end of partition using positioning strip 4, positioning strip is strip
Shape, section is T shape, and is provided with the elongated slot fastened with 22 edge of skeleton on partition on it, is consolidated to the two sides of skeleton
It is fixed, with reference to Fig. 2.
Airflow channel
When battery is in use, airflow channel can cool down battery core, realize cooling.When being in harsh climate, especially
It is winter, and the gas that heating is passed through in the airflow channel can heat these battery cores.
Coating layer, such as fireproof coating, fire resistant coating etc. can be sprayed on the surface of foaming body, sheet material forms waterproof knot
Structure avoids the Vapor adsorption in cold air or hot gas from entering the inside of sheet material.
A glass fabric can be set on the inside of foaming body, to enhance its intensity, prevent to fall off, it is whole
Feel stronger.
Above for multiple specific embodiments illustrate a variety of benefits, other the advantages of and solution to problem
Scheme.However, these benefits, advantage, for solution to the problem and any one or more feature (they can so that
Make any benefit, advantage, solution to the problem occurred or becomes more prominent) it is not construed as any or all power
A critical, required or essential feature in benefit requirement.
After reading this description, skilled artisans will appreciate that for the sake of clarity in multiple isolated embodiment party
Certain features described herein can also be combined and be provided in a single embodiment under the background of case.With this
On the contrary, for simplicity, multiple and different features described in the background of a single embodiment can also be respectively
Or it is provided in a manner of any sub-portfolio.It is included within the scope in addition, mentioned come the numerical value that illustrates with range
Each value.
Claims (7)
1. lithium cell partition, which is characterized in that including foaming body (21) and skeleton (22), the skeleton (22) is metal stamping
Part, and the Z-shaped bending (221) being evenly arranged, the Z-shaped folding are formed to two sides by way of punching press on the skeleton (22)
The end of curved (221) is the planar support point (222) for cooperating with battery core；The foaming body (21) is compounded in skeleton (22)
Upper and foaming body (21) two sides main surface is located at the inside of Z-shaped bending (221)；
The foaming body (21) is by ordinary portland cement 230kg, 20 kg of ferrous aluminate cement, glass bead 30kg, stone
The certain thickness hair that 1 kg of powder, 10 kg of hydrogen peroxide, water-reducing agent 1kg, water 75kg and the foamed technique of 0.1 kg of rubber powder are formed
Steep plate；
The two sides main surface of the foaming body (21) is equipped with a web support layer；
A coating layer is sprayed in the outer surface of the web support layer.
2. lithium cell partition according to claim 1, which is characterized in that the web support layer is non-woven fabrics or glass fibers
Tie up one of cloth.
3. lithium cell partition according to claim 1, which is characterized in that the dope layer is in fireproof coating or fire resistant coating
One kind.
4. according to claim 1 to the manufacturing method of lithium cell partition described in 3, which is characterized in that
Firstly, skeleton blank (22 ') required for being obtained using metal plate punch-forming mold, is had on a metal plate to two sides
Then the 90 degree of bendings (221 ') extended place skeleton blank stand-by in a mold；
Then, the configuration of foaming body (21) material is carried out, the specific process steps are as follows:
Step 1), ingredient: according to ordinary portland cement 230kg, ferrous aluminate cement 20 kg, glass bead 30kg, stone
The ratio stock of 1 kg of powder, hydrogen peroxide 10 kg, water-reducing agent 1kg, water 75kg, 0.1 kg of rubber powder, cement that bulk vehicle ships and
Mountain flour, glass bead are separately stored in cementing tank, are controlled by microcomputer using electronic scale weighing above-mentioned each raw material accurate
Automatic gauge ingredient；
Step 2, automatic mixed stirring: using high-speed mixer that ordinary portland cement, ferrous aluminate cement, vitreous is micro-
Dioxygen is added into the slurry being stirred with being added in high-speed mixer after stirring 2 minutes in pearl, mountain flour, rubber powder, water, water-reducing agent
Water；
Step 3), casting: stirring 8 to 12 seconds after hydrogen peroxide is added, steam-operating valve opened, and slurry is made to inject the mold
In；
Step 4), foaming: slurry automatically generates bubble in mold, and is full of space；
Intensity has reached 5Mpa after thermostatic curing 24 hours in step 5), curing kilns, then by 90 degree on skeleton blank
Bending carries out bending again and forms Z-shaped bending；
A coating layer is sprayed on the surface of the foaming body after continuing maintenance 24 hours.
5. manufacturing method according to claim 4, which is characterized in that further include in the ingredient diene elastomer,
Fluoroelastomer, polyethylene particle or PP GRANULES.
6. manufacturing method according to claim 4, which is characterized in that the mold includes the molding space of a channel-shaped
(51), and molding space trench bottom be arranged for accommodating 90 degree of bending jacks (52) on skeleton blank.
7. manufacturing method according to claim 4, which is characterized in that in step 4 further include one on foaming body surface
It is bonded the process of web support layer.
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| CN201610789442.8A CN106299221B (en) | 2016-08-31 | 2016-08-31 | Lithium cell partition and its manufacturing method |
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| DE102012018344B3 (en) * | 2012-09-15 | 2013-09-26 | Audi Ag | Battery module and method for its manufacture |
| CN105190935B (en) * | 2012-10-11 | 2018-03-06 | 凯尊创新有限公司 | Li-ion batteries piles |
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Effective date of registration: 20181212 Address after: 225652 Jiangsu province Yangzhou city Gaoyou City Ling Tong industrial concentration area Applicant after: JIANGSU HENGTONG LIGHTING GROUP Co.,Ltd. Address before: 510000 Guangdong science and Technology Industrial Development Zone, Guangzhou, 231 and 233 podium B1B2 Building 1, two, three, four Applicant before: BOAO ZONGHENG NETWORK TECHNOLOGY Co.,Ltd. Effective date of registration: 20181212 Address after: 510000 Guangdong science and Technology Industrial Development Zone, Guangzhou, 231 and 233 podium B1B2 Building 1, two, three, four Applicant after: BOAO ZONGHENG NETWORK TECHNOLOGY Co.,Ltd. Address before: 250000 Shandong Ji'nan high tech Zone, China Railway Yi Du International City 8-2-1402 Applicant before: Du Guiju |
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