CN106257739A - A kind of battery module and preparation method thereof - Google Patents
A kind of battery module and preparation method thereof Download PDFInfo
- Publication number
- CN106257739A CN106257739A CN201510960447.8A CN201510960447A CN106257739A CN 106257739 A CN106257739 A CN 106257739A CN 201510960447 A CN201510960447 A CN 201510960447A CN 106257739 A CN106257739 A CN 106257739A
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- CN
- China
- Prior art keywords
- heat
- battery
- battery module
- shell
- conducting medium
- 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.)
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Classifications
-
- 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
-
- 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
A kind of battery module and preparation method thereof, including the battery unit being made up of multiple cells, wherein, cell surfactant package or be coated with waterproof layer；Liquid or gel by high thermal conductivity coefficient are as heat-conducting medium, and wherein, battery unit immerses in heat-conducting medium；With the shell with sealing function；Wherein, around the battery unit of cincture heat-conducting medium is installed in shell.The battery module that the present invention provides, use the shell sealed, heat exchange is carried out in thermo-conducting manner by gel-like media, specifically, in order to improve heat-transfer effect, between cell or battery unit and shell, fill the heat-conducting medium that conductivity of heat is good, the temperature homogeneity of the cell in module can be made to significantly improve.In use, all cells in this battery module are all at a temperature of substantially uniform.
Description
[technical field]
The present invention relates to a kind of battery module, particularly relate to one and be assemblied in sealing shell and often with bigger merit
Battery module in the accumulator battery of rate work or continuous firing and preparation method thereof.
[background technology]
At present, along with improving constantly of Public Environmental Awareness, accumulator is increasingly being applied to electric vehicle, storage
The Large Copacity such as energy or the occasion of high power work.In practical occasion, accumulator is many with cell series connection and/or parallel connection
The form becoming set of cells uses, and the quantity of series/parallel is from tens to hundreds of.Sky is effectively used in order to improve
Between, it is desirable to reduce set of cells volume, cell is often arranged closely, this for set of cells heat radiation very
Unfavorable.When charging latter stage and high power work, internal storage battery meeting heat release, the cell in set of cells centre position
Temperature will be apparently higher than the temperature of cell near shell wall, the electrochemical properties that they show and other battery
Difference, the battery homogeneity obtained by all effort before assembling just has not been existed, and in using, this partial monosomy battery is very
Will be operated in soon overcharge, cross put under state, performance fails rapidly, lost efficacy, cause whole Battery pack hydraulic performance decline even
Fault, inefficacy.By the dissection and analysis to the accumulator battery that cycle life ends, also indicate that set of cells middle part is single
The residual capacity of body battery is well below the residual capacity of set of cells edge cell, and the inefficacy of set of cells is main
It is owing to the inefficacy of set of cells middle part partial monosomy battery causes.This life-span resulting in set of cells is significantly less than
The cycle life of cell.Being additionally, since in the set of cells gone out of use still has use value possibly together with significant proportion
Cell, also result in the waste of resource and the increase of use cost.
In order to improve the situation of cell non-uniform temperature present in set of cells use process, and then improve battery
In the service life of group, there has been proposed various solution.As in set of cells plus various chillers, wherein with
Relatively conventional with the water cooling plant using water as cooling medium as the air cooling equipment of cooling medium with air.But these are two years old
The mode of kind also exists the deficiency needing additional cooling medium recycle unit, it is provided that the device of medium circulation power such as blower fan,
Water pump itself needs expend electric energy and take up room, and coolant guiding channel to be reserved in set of cells, this will increase
The volume of set of cells, limits the set of cells riding position in application scenario.Further, as used on automobile, stop
After, if turned off the power supply on car, the device such as blower fan, water pump will quit work, it is impossible to ensures the abundant of set of cells
Cooling.To realize just closing the power supply on blower fan, water pump and car after set of cells is sufficiently cool, then substantially to increase
The complexity of electrical control, improves cost.
[summary of the invention]
The technical problem mentioned in view of the aforementioned technical background, it is an object of the invention to provide a kind of battery module,
This battery module only needs to add special heat-conducting medium in traditional battery module, the most permissible by means of conduction of heat
Realize the temperature of cell in module homogeneous.
The present invention is achieved in that the battery module that a kind of temperature is consistent, including be made up of multiple cells
Battery unit, wherein, cell surfactant package or be coated with waterproof layer；By liquid or the gel of high thermal conductivity coefficient
As heat-conducting medium, wherein, during battery unit immerses heat-conducting medium；With the shell with sealing function；Wherein, week
Collarette is installed in shell around the battery unit of heat-conducting medium.The battery module that the present invention provides, uses outside sealing
Shell, carries out heat exchange in thermo-conducting manner by heat-conducting medium medium, specifically, in order to improve heat-transfer effect,
Fill the heat-conducting medium that conductivity of heat is good between cell or battery unit and shell, the monomer electricity in module can be made
The temperature homogeneity in pond significantly improves.In use, all cells in this battery module are all in suitable one
At a temperature of cause.
Specifically, described heat-conducting medium is made up of liquid or the gel of high thermal conductivity coefficient, heat-conducting medium preferred heat conduction system
Several high sodium carboxymethyl cellulose (CMC), the hydrogel of hydroxypropyl methyl cellulose (HPMC), glue solid content
It is 3～10%.
The shell of described battery module is made up with metal or nonmetallic materials of sealing member, and by shell upper and shell
Bottom docking is constituted.
Wherein, shell can be made up of metal, the such as materials such as nickel plating carbon steel, aluminum, rustless steel, it is also possible to by resin,
As the materials such as PP, PE, PPE, ABS, MBS are made.
Wherein, heat-conducting medium contacts with battery unit, carries out heat transfer.
Described battery module, also includes spill positioning splint and convex positioning splint, the two positioning splint
It is formed from a resin, and is arranged on described shell both sides.
Described battery module, can be laterally or longitudinally by described spill positioning splint and convex positioning splint
Extension battery module.
Described battery module, also includes being formed from a resin and be arranged on the protection board outside described positioning splint.
Described battery module, wherein: described positioning splint and described protection board by securing member be fixed on described outside
On shell.
Described battery module, wherein: connect between the plurality of cell and/or be connected in parallel；Institute
State battery unit and have multiple, connect between these described battery units and/or be connected in parallel.
According to embodiments of the invention, battery unit (is gone here and there after 5 parallel connections by 50 cell connection in series-parallel 5P10S again
Connection) form.
The method have technical effect that: a kind of battery module is provided, use the shell that heat radiation is good, passed by heat
The mode led is dispelled the heat, and specifically, in order to improve heat-transfer effect, fills between cell or battery unit and shell
The insulant that heat conductivity is good.The battery module that the present invention provides, can make the temperature of cell in module
Uniformity significantly improves, and makes the electrochemical properties of these cells reach fairly close degree, thus ensures these
Cell whether be used in series or in the case of used in parallel all without occur Individual cells overcharge or
Overdischarge, extends the service life of set of cells.
The battery module that the present invention proposes, is particularly well-suited to form plate shaped battery group.The accumulator of present invention design
In module, the kind of battery used is possible not only to be Ni-MH battery, it is also possible to be lithium ion battery, nickel-zinc cell, nickel
Other kind accumulator such as cadmium cell.That fills between cell or battery unit and heat-dissipating casing in the present invention leads
Sodium carboxymethyl cellulose (CMC) that the preferred heat conductivity of thermal medium is high, the water of hydroxypropyl methyl cellulose (HPMC)
Gel, while augmentation of heat transfer, also has the effect of damping, insulation concurrently.
[accompanying drawing explanation]
Understandable, below in conjunction with the accompanying drawings in order to above and other objects of the present invention, feature and advantage can be become apparent from
The invention will be further described with detailed description of the invention.
Fig. 1 is the overall structure schematic diagram of traditional storage battery module；
Fig. 2 is the structural representation of the battery unit used in the battery module described in the specific embodiment of the invention；
Fig. 3 is the connection sheet connection status schematic diagram between cell；
Fig. 4 is the extension schematic diagram of the battery module described in the specific embodiment of the invention；
Fig. 5 is the implementation result figure of the battery module described in the specific embodiment of the invention.
1. shell in figure, 1-1. shell upper, 1-2. outer casing underpart, 2. connect sheet, 2-1. connects sheet fuse protection
Place, 3. cell, the waterproof coating on 3-1. cell surface or wrapper, 3a. cell positive terminal,
3b. cell negative terminal, 4. heat-conducting medium, 5. sealing ring, 6. battery unit, 7. convex location-plate, the most recessed
Shape location-plate, 9. connects screw thread, 10. gel hand-hole, 11. protection boards, 12. protection boards.
[detailed description of the invention]
The following is the detailed description of the invention according to the specific instantiation explanation present invention, be familiar with those skilled in the art
Member can be understood the structure of the present invention, advantage and effect easily by the content disclosed in following example.
The present invention also can be implemented by other different instantiation or be applied, the every details in this specification
Also various modification and change can be carried out under the spirit not departing from this creation based on different viewpoints and application.
Furthermore, the signal that figures below is simplification is graphic, and the basic conception of the present invention is described the most in a schematic way,
Therefore component count, shape and size when only showing the assembly relevant with the present invention rather than implement according to reality in graphic is painted
System, during its actual enforcement, the kenel of each assembly, quantity and ratio can make random change, and its assembly layout kenel can
Can be increasingly complex.
Fig. 1 is traditional battery module, becomes battery unit 6 with connection sheet 2 connection in series-parallel between cell 3.Structure letter
Single, but the temperature of the cell in set of cells centre position will be apparently higher than the temperature of cell, battery outside module
Internal with outside temperature difference is relatively big, uses middle internal cell to be operated in and overcharges, crosses and put under state,
Performance fails rapidly, loses efficacy, and the service life of battery module is shorter.
See Fig. 2～Fig. 4, the invention provides a kind of battery module, for the high-power work such as energy storage and electric automobile
Make in the accumulator battery of occasion, form including the battery unit 6 being made up of multiple cells 3.Wherein, monomer electricity
Pool surface is packed or is coated with waterproof layer 3-1；Fill out between cell 3 or battery unit 6 and heat-dissipating casing 1
The heat-conducting medium 4 filled, the preferably aqueous solution of CMC or HPMC that heat conductivity is high, or water miscible phase transformation
The mixed solution of material and CMC or HPMC, solid content 5～10% aqueous solution be gel, therefore also referred to as gel media.
Sealing can why to use gel state heat-conducting medium to be present to ensure that between the shell 1 of battery module and battery unit 6
Leaning on, heat-conducting medium 4 does not leaks.In the present embodiment, use heat-conducting medium 4, while augmentation of heat transfer, the most double
Tool damping, the effect of insulation.
This gel media 4 one aspect plays the effect absorbing heat, on the other hand plays conduction of heat.The method also may be used
To drive thermally conductive gel medium 4 to flow by external pump, make the single battery temperature one in whole battery module
Causing, the most whole module is under same temperature.
The battery module that the present invention provides, just may be used by means of the conduction of heat between heat-conducting medium 4 and battery unit 6
Homogeneous to realize the temperature of cell.
According to embodiments of the invention, according to embodiments of the invention, the shell of described battery module by sealing member with
Metal or nonmetallic materials are made, and are docked with outer casing underpart by shell upper and constitute.
Wherein, shell can be made up of metal, the such as materials such as nickel plating carbon steel, aluminum, rustless steel, it is also possible to by resin,
As the materials such as PP, PE, PPE, ABS, MBS are made.
Wherein, gel media 4 contacts with shell 1, carries out heat transfer, it is achieved the heat radiation of cell, makes module
The temperature of the cell 3 in interior battery unit 6 tends to average, makes the electrochemical properties of these cells reach phase
When close degree, thus ensure these cells whether be used in series or in the case of used in parallel all
Do not have overcharging or overdischarge of Individual cells, extend the service life of set of cells.
Additionally, the battery module that invention provides, volume compact, it is particularly suitable for installing at relatively narrow space
Use.The battery module that the present invention proposes, is particularly well-suited to form plate shaped battery group.
According to the present invention, in battery unit 6, the kind of cell used is possible not only to be Ni-MH battery, it is also possible to be
Other kind accumulator such as lithium ion battery, nickel-zinc cell, nickel-cadmium cell.Carry out between multiple cells series connection and
/ or be connected in parallel；Meanwhile, connect between multiple cells 3 and/or be connected in parallel.It is to say, such as figure
Shown in 2 and Fig. 3, in the battery module of the present invention, each cell 3 only one of which positive terminal 3a and
One negative terminal 3b, it is achieved the series/parallel between multiple cells 3, and, each cell 3 soaks
In heat-conducting medium 4.Specifically, in an embodiment of the present invention, battery unit 6 is by 50 cells 3 first
In parallel (5P) connect again (10S) form.As it is shown on figure 3, wherein, the multiple lists being immersed in heat-conducting medium 4
Body 3 compact arrangement, in shell 1, carries out heat transfer by heat-conducting medium 4, it is achieved the thermal diffusion of battery unit 6 is also
Reach temperature homogeneous.Protection board 11 and protection board 12 laterally or can be indulged by convex location-plate 7 and spill location-plate 8
To extension battery module, as shown in Figure 4.
Fig. 5 is the using effect figure of embodiment.Compared with conventional module, use the battery module of the technology of the present invention
The cycle life of 5P10S is improved to 2200 times by 820 times.
The battery module that the present invention provides, one of manufacture is as follows:
First, preparation solid content 8% CMC aqueous solution as heat-conducting medium, gel under room temperature.
At cell surfactant package or be coated with waterproof layer 3-1；
Module assembling mode is as follows: as in figure 2 it is shown, use 5 cylindrical cell 3 parallel combinations, the most again
Set of cells tandem compound good for every 10 parallel connections is formed battery unit 6, then, battery unit 6 is placed in electricity
In pond shell 1, battery unit 6 and battery case top 1-1, the contact position sealing material of battery case bottom 1-2
Material seals；Again by even screw connection hole 9, with bolt by battery module top box 1-1, battery module nowel 1-2, list
Body battery 3, sealing ring 5 form one and seal entirety.Then gel media 4 is injected sealing by hand-hole 10
Internal and riddle in the space around cell 3.Protection board 11 and protection board 12 can pass through convex location-plate 7
With spill location-plate 8 by convex-concave slot fit, transverse direction and longitudinal direction extension battery module, as the A in Fig. 4, B, C,
The extension of D-module.
As it is shown on figure 3, according to different connection in series-parallel requirements, with cell connector 2 by the both positive and negative polarity of cell 3 even
Pick up, connect the method that electric resistance welding or Laser Welding etc. can be used to weld between sheet 2 and cell 3 and be connected.Its
The material of middle connection sheet 2 can be copper, nickel, nickel-clad copper, and it connects 2-1 at sheet fuse protection, when battery current reaches
Fuse to during certain value, the safety of protection module.
The protection board 12 of Fig. 4 is fixed on protection board 11, with standard module composition entirety.Protection board 12 can be straight
The connection sampling end 2-1 connect and be connected sheet 2 is connected to voltage sample, and owing to not sampling, line connects, and increases module
Sampling reliability.Protection board can be by the master control borad communication of CAN communication with power-supply management system.
The battery module that the present invention provides, by filling out between battery unit or cell and battery unit and shell
Filling the heat-conducting medium that heat conductivility is good, heat conduction by the way of conduction of heat, the temperature making cell in module is equal
Even property significantly improves, and makes the electrochemical properties of these cells reach fairly close degree, thus ensures that these are single
Body battery is whether being used in series or all without overcharging or mistake of Individual cells occur in the case of used in parallel
Electric discharge, extends the service life of set of cells.
Embodiments of the invention described above illustrate principle and effect thereof of the present invention the most illustratively, not for limiting this
Invention, knows and it will be understood by those skilled in the art that in the case of without departing from the spirit and scope of the present invention, to this
Any changes and improvements that invention is made are within.The scope of the present invention, should be such as this Shen
What claim please was defined is as the criterion.
Claims (12)
1. a battery module, it is characterised in that:
Described battery module includes:
The battery unit being made up of multiple cells, wherein, cell surfactant package waterproof material or coating
There is waterproof layer；Liquid or gel by high thermal conductivity coefficient are as heat-conducting medium, and described heat-conducting medium is around described battery
Outside unit；With
There is the shell of sealing property；Wherein, the described battery unit being dipped in described heat-conducting medium is installed on described
In shell.
2. battery module as claimed in claim 1, wherein:
Described heat-conducting medium is made up of liquid or the gel of high thermal conductivity coefficient, the carboxylic that the preferred heat conductivity of heat-conducting medium is high
Sodium carboxymethylcellulose pyce (CMC), the hydrogel of hydroxypropyl methyl cellulose (HPMC), glue solid content is 3～10%.
3. battery module as claimed in claim 1 or 2, wherein:
Described shell is made up with metal or nonmetallic materials of sealing member.
4. battery module as claimed in claim 1 or 2, wherein:
Described shell can be made up of metal, the such as materials such as nickel plating carbon steel, aluminum, rustless steel, it is also possible to by resin,
As the materials such as PP, PE, PPE, ABS, MBS are made.
5. battery module as claimed in claim 1 or 2, wherein:
Described shell is docked with outer casing underpart by shell upper and constitutes.
6. battery module as claimed in claim 1 or 2, wherein: described heat-conducting medium and described battery unit
Contact, carries out heat transfer.
7. battery module as claimed in claim 1 or 2, also includes spill positioning splint and convex positioning splint,
The two positioning splint is formed from a resin, and is arranged on described shell both sides.
8. battery module as claimed in claim 7, by described spill positioning splint and convex positioning splint
Can laterally or longitudinally extend battery module.
9. battery module as claimed in claim 7 or 8, also includes being formed from a resin and be arranged on described location
Protection board outside clamping plate.
10. battery module as claimed in claim 9, wherein: described positioning splint and described protection board are by tightly
Firmware is fixed on described shell.
11. battery modules as claimed in claim 1 or 2, wherein: carry out between the plurality of cell
Connect and/or be connected in parallel；Described battery unit has multiple, carries out connecting and/or also between these described battery units
Connection connects.
The manufacture method of 12. 1 kinds of battery modules, comprises the steps: to be formed battery list by multiple cells
Unit, wherein, cell surfactant package waterproof material or be coated with waterproof layer；By the liquid or solidifying of high thermal conductivity coefficient
Glue is as heat-conducting medium, and described heat-conducting medium is around outside described battery unit；With
The described battery unit being dipped in described heat-conducting medium is installed in the shell with sealing property.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510960447.8A CN106257739A (en) | 2015-12-18 | 2015-12-18 | A kind of battery module and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510960447.8A CN106257739A (en) | 2015-12-18 | 2015-12-18 | A kind of battery module and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN106257739A true CN106257739A (en) | 2016-12-28 |
Family
ID=57713481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510960447.8A Pending CN106257739A (en) | 2015-12-18 | 2015-12-18 | A kind of battery module and preparation method thereof |
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| CN (1) | CN106257739A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106935933A (en) * | 2017-04-12 | 2017-07-07 | 厦门金龙联合汽车工业有限公司 | A kind of preparation technology for strengthening the hydrogel of battery modules radiating |
| CN106953137A (en) * | 2017-04-12 | 2017-07-14 | 厦门金龙联合汽车工业有限公司 | A kind of method of utilization hydrogel enhancing battery modules radiating |
| CN107978698A (en) * | 2017-12-01 | 2018-05-01 | 合肥国盛电池科技有限公司 | Vehicular battery bag |
| CN108807729A (en) * | 2018-07-03 | 2018-11-13 | 华霆（合肥）动力技术有限公司 | Power supply and electric vehicle |
| CN110391477A (en) * | 2018-04-20 | 2019-10-29 | 矢崎总业株式会社 | Battery pack |
| DE102018207938A1 (en) * | 2018-05-18 | 2019-11-21 | Bayerische Motoren Werke Aktiengesellschaft | Storage device for storing electrical energy for a motor vehicle, in particular for a motor vehicle, and motor vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106935933A (en) * | 2017-04-12 | 2017-07-07 | 厦门金龙联合汽车工业有限公司 | A kind of preparation technology for strengthening the hydrogel of battery modules radiating |
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| CN110391477A (en) * | 2018-04-20 | 2019-10-29 | 矢崎总业株式会社 | Battery pack |
| DE102018207938A1 (en) * | 2018-05-18 | 2019-11-21 | Bayerische Motoren Werke Aktiengesellschaft | Storage device for storing electrical energy for a motor vehicle, in particular for a motor vehicle, and motor vehicle |
| CN108807729A (en) * | 2018-07-03 | 2018-11-13 | 华霆（合肥）动力技术有限公司 | Power supply and electric vehicle |
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Effective date of registration: 20170606 Address after: 201815 Shanghai City, Jiading District Xingbang Road No. 398 Applicant after: Shanghai CENAT New Energy Company Limited Applicant after: Guangxi Nakanai new energy Co. Ltd. Applicant after: Nanchang Nakanai new energy Co. Ltd. Address before: 201815 Shanghai City, Jiading District Xingbang Road No. 398 Applicant before: Shanghai CENAT New Energy Company Limited |
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20161228 |