CN111463383A - Novel soft package lithium ion power battery module structure - Google Patents
Novel soft package lithium ion power battery module structure Download PDFInfo
- Publication number
- CN111463383A CN111463383A CN202010277304.8A CN202010277304A CN111463383A CN 111463383 A CN111463383 A CN 111463383A CN 202010277304 A CN202010277304 A CN 202010277304A CN 111463383 A CN111463383 A CN 111463383A
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- China
- Prior art keywords
- battery module
- lower aluminum
- aluminum plate
- soft
- plate
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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
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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
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- 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
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
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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
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/653—Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
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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
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/654—Means for temperature control structurally associated with the cells located inside the innermost case of the cells, e.g. mandrels, electrodes or electrolytes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6554—Rods or plates
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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
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
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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)
- Materials Engineering (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention discloses a novel soft package lithium ion power battery module structure, which comprises a battery module main body; the battery module main body comprises a plurality of soft-package battery cell bodies (1); the top of the battery module main body is provided with a protection plate (5); the battery module main body is positioned in the lower aluminum plate (3) with the upward opening; the left side and the right side of the lower aluminum plate (3) are respectively and fixedly connected with an end plate (4); the heat-conducting glue is filled between the soft-packaged cell body and the lower aluminum plate. A plurality of longitudinally distributed buffering pieces are arranged at the top of the lower aluminum plate at equal intervals and used for reserving the space for the expansion of the battery core; both ends bottom surface about guard plate (5) all fixes through laser welding with end plate (4) and lower aluminum plate (3) top, promotes module bulk strength. According to the novel soft package lithium ion power battery module structure disclosed by the invention, flexible grouping is realized through the design of the lower aluminum plate and the buffer part for reserving the expansion of the battery core, the grouping efficiency of the module is improved, and the module cost is reduced.
Description
Technical Field
The invention relates to the technical field of new energy automobile battery modules, in particular to a novel soft package lithium ion power battery module structure.
Background
Compared with a square-shell battery, the soft-package battery has the remarkable characteristic that the shell structure of the soft-package battery is a soft packaging material (generally referred to as an aluminum plastic film).
The conventional soft package module grouping structure mainly refers to a standard module design performed by VDA (german automobile association standard) size. Although the VDA standard module has a universal and standardized feature, the VDA standard module cannot fully utilize the space of the battery pack due to the fixed module structure, and cannot improve the energy density of the battery pack. Wherein, the rising of the whole cost is brought to the smaller module structure, and the design concept of the current low cost is not met. The large special-shaped module based on the size design of the battery pack does not have the design concept of universality and low cost.
Disclosure of Invention
The invention aims to provide a novel soft package lithium ion power battery module structure aiming at the technical defects in the prior art.
Therefore, the invention provides a novel soft package lithium ion power battery module structure which comprises a battery module main body;
the battery module main body comprises a plurality of vertically arranged and transversely arranged soft package battery cell bodies;
the top of the battery module main body is provided with horizontally distributed protection plates;
the battery module main body is positioned in the lower aluminum plate with the upward opening;
the left side and the right side of the lower aluminum plate are respectively and fixedly connected with an end plate;
heat-conducting glue is filled between the soft-packaged cell body and the lower aluminum plate;
the both ends bottom surface about the guard plate all fixes through laser welding with end plate and lower aluminum plate top.
Wherein, the front and back both ends of guard plate to and the front and back both ends of lower aluminum plate have welded a transversely distributed limit beam respectively.
Wherein, the front and back both ends of battery module main part are provided with a plurality of plastics frame respectively.
Wherein, every soft-packaged electrical core body bottom, and down between the aluminum plate top surface, it has the heat conduction to glue to fill.
Wherein, the guard plate and the outside of lower aluminum plate are fixed through many packing area of encircleing the distribution.
Wherein, still be provided with an insulating heat conduction pad between the top of battery module main part and the guard plate.
Compared with the prior art, the novel soft package lithium ion power battery module structure provided by the invention has the advantages that the structural design is scientific, compared with the traditional VDA module, the use of parts is reduced, the flexible grouping is realized through the design of the lower aluminum plate and the reserved buffer part for battery cell expansion, the grouping efficiency of the module is improved through the flexible design, the module cost is reduced, the energy density and the production efficiency of the battery pack are improved, and the novel soft package lithium ion power battery module structure has great production practice significance.
Drawings
Fig. 1 is a schematic overall structure diagram of a novel soft-package lithium ion power battery module structure provided by the invention;
fig. 2 is a schematic view of an exploded structure of a novel soft-package lithium ion power battery module structure provided by the invention;
in the figure: 1 is a soft-package battery cell body, 2 is a plastic frame, and 3 is a lower aluminum plate;
4 is the end plate, 5 is the guard plate, 6 is the bolster, 7 is insulating heat conduction pad, 8 is the boundary beam.
Detailed Description
In order to make the technical means for realizing the invention easier to understand, the following detailed description of the present application is made in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant application and are not limiting of the application. It should be noted that, for convenience of description, only the portions related to the present application are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
It should be noted that in the description of the present application, the terms of direction or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application.
In addition, it should be noted that, in the description of the present application, unless otherwise explicitly specified and limited, the term "mounted" and the like should be interpreted broadly, and may be, for example, either fixedly mounted or detachably mounted.
The specific meaning of the above terms in the present application can be understood by those skilled in the art as the case may be.
Referring to fig. 1 and 2, the invention provides a novel soft-package lithium ion power battery module structure, which comprises a battery module main body;
the battery module main body comprises a plurality of vertically arranged and transversely arranged soft package battery cell bodies 1;
the top of the battery module main body is provided with horizontally distributed protection plates 5;
the battery module main body is positioned in the lower aluminum plate 3 with the upward opening;
the left side and the right side of the lower aluminum plate 3 are respectively and fixedly connected with an end plate 4;
a plurality of longitudinally distributed buffering parts 6 are arranged (for example, adhered) at equal intervals on the top of the lower aluminum plate 3 and are used for reserving the space for cell expansion;
the buffer piece 6 is arranged corresponding to a gap between any two adjacent soft-package battery cell bodies 1 (below the gap);
the bottom surfaces of the left end and the right end of the protection plate 5 are fixed with the top of the end plate 4 and the top of the lower aluminum plate 3 through laser welding.
It should be noted that the buffer member 6 may be made of an existing material with good thermal conductivity and elasticity, for example, an organic silicon heat conducting sheet may be used, and has the advantages of high thermal conductivity, low thermal resistance, good resilience, and good insulating property. The organic silicon heat conducting fin is an organic silicon elastomer, and ceramic heat conducting powder is added in the organic silicon heat conducting fin. Is a mature technology in the prior art and is not described in detail herein.
In the invention, the front end and the rear end of the protection plate 5 and the front end and the rear end of the lower aluminum plate 3 are respectively welded with a transversely distributed side beam 8. Therefore, the firm reliability of the entire structure can be enhanced.
In the invention, in particular, a plurality of plastic frames 2 are respectively arranged at the front end and the rear end of the main body of the battery module;
a plurality of plastic frames located on the same side are connected (e.g., clamped or integrally formed) with each other and fixedly connected with the end plate 4; and the plastic frame 2 is used for fixing the lug of the soft-package battery cell body 1.
It should be noted that, in general, the tabs of the four soft-package battery cell bodies 1 are fixed by one plastic frame, and of course, the size of the plastic frame can be adjusted according to the needs of a user to fix the tabs of any plurality of soft-package battery cell bodies 1.
In the invention, in particular, the heat conducting glue is filled between the bottom of each soft-package battery cell body 1 and the top surface of the lower aluminum plate 3, so that the battery module transfers heat out through the heat conducting glue, the heat exchange effect between the soft-package battery cell body 1 and the lower aluminum plate 3 is favorably enhanced, and a better heat dissipation effect is realized.
In the invention, in particular, an insulating heat-conducting pad 7 (which can be in a rectangular structure) can be arranged between the top of the battery module main body and the protection plate 5; a guard plate for playing heat conduction effect, help battery module heat dissipation insulates laminate polymer battery core body 1 simultaneously, prevents that electric core and aluminium system from taking place to electrically conduct.
It should be noted that the insulating thermal pad 7 is an organic silicon thermal pad, and has the advantages of high thermal conductivity, low thermal resistance, good resilience, and good insulating property. The organic silicon heat conducting pad is an organic silicon elastomer, and ceramic heat conducting powder is added in the organic silicon heat conducting pad. Is a mature technology in the prior art and is not described in detail herein.
In the invention, in order to prevent the cell from vibrating and failing in the vertical direction, the protection plate 5 is connected with the end plates 4 on the left and right sides of the protection plate in a matched manner (for example, clamped connection or threaded connection or welding) at the upper part of the main body of the battery module, so as to protect the soft package cell body 1.
In the invention, in the concrete implementation, the whole battery module is fixed through the packing belt, namely the protection plate 5 and the outer part of the lower aluminum plate 3 of the novel soft package lithium ion power battery module structure are fixed through a plurality of packing belts distributed in a surrounding manner.
In the invention, in particular to implementation, the battery module structure can realize flexible grouping through the design of the lower aluminum plate 3 and the buffer part 6 for reserving the cell expansion space, thereby greatly improving the design flexibility.
In summary, compared with the prior art, the novel soft package lithium ion power battery module structure provided by the invention is scientific in structural design, compared with the traditional VDA module, the use of parts is reduced, flexible grouping is realized through the design of the lower aluminum plate and the reserved buffer part for battery core expansion, the grouping efficiency of the module is improved through flexible design, the module cost is reduced, the energy density and the production efficiency of a battery pack are improved, and the novel soft package lithium ion power battery module structure has great production practice significance.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (6)
1. A novel soft package lithium ion power battery module structure is characterized by comprising a battery module main body;
the battery module main body comprises a plurality of vertically arranged and transversely arranged soft package battery cell bodies (1);
the top of the battery module main body is provided with horizontally distributed protection plates (5);
the battery module main body is positioned in the lower aluminum plate (3) with the upward opening;
the left side and the right side of the lower aluminum plate (3) are respectively and fixedly connected with an end plate (4);
heat-conducting glue is filled between the soft-package battery cell body (1) and the lower aluminum plate (3);
a plurality of longitudinally distributed buffer pieces (6) are arranged at the top of the lower aluminum plate (3) at equal intervals and used for reserving the space for battery core expansion;
the buffer piece (6) is arranged corresponding to a gap between any two adjacent soft-package battery cell bodies (1);
the bottom surfaces of the left end and the right end of the protection plate (5) are fixed with the top of the end plate (4) and the top of the lower aluminum plate (3) through laser welding.
2. The novel soft-package lithium-ion power battery module structure as claimed in claim 1, wherein a transversely-distributed side beam (8) is welded to each of the front and rear ends of the protection plate (5) and the front and rear ends of the lower aluminum plate (3).
3. The novel soft package lithium ion power battery module structure as claimed in claim 1, wherein a plurality of plastic frames (2) are respectively arranged at the front and back ends of the battery module body.
4. The novel soft-package lithium-ion power battery module structure according to claim 1, wherein a heat conducting glue is filled between the bottom of each soft-package battery cell body (1) and the top surface of the lower aluminum plate (3).
5. The novel soft package lithium ion power battery module structure as claimed in claim 1, wherein the protection plate (5) and the outer part of the lower aluminum plate (3) are fixed by a plurality of packing belts distributed around.
6. The novel soft-package lithium-ion power battery module structure as claimed in any one of claims 1 to 5, wherein an insulating heat-conducting pad (7) is further arranged between the top of the battery module main body and the protection plate (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010277304.8A CN111463383A (en) | 2020-04-10 | 2020-04-10 | Novel soft package lithium ion power battery module structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010277304.8A CN111463383A (en) | 2020-04-10 | 2020-04-10 | Novel soft package lithium ion power battery module structure |
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| Publication Number | Publication Date |
|---|---|
| CN111463383A true CN111463383A (en) | 2020-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010277304.8A Pending CN111463383A (en) | 2020-04-10 | 2020-04-10 | Novel soft package lithium ion power battery module structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112615096A (en) * | 2020-12-01 | 2021-04-06 | 的卢技术有限公司 | Cast aluminum end plate structure applied to battery module and mounting method |
| CN113688530A (en) * | 2021-08-30 | 2021-11-23 | 厦门金龙汽车新能源科技有限公司 | Solving method for electric quantity optimal matching scheme of ultrathin battery pack |
| CN114497681A (en) * | 2022-02-14 | 2022-05-13 | 湖北亿纬动力有限公司 | Battery grouping method and power battery pack |
-
2020
- 2020-04-10 CN CN202010277304.8A patent/CN111463383A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112615096A (en) * | 2020-12-01 | 2021-04-06 | 的卢技术有限公司 | Cast aluminum end plate structure applied to battery module and mounting method |
| CN113688530A (en) * | 2021-08-30 | 2021-11-23 | 厦门金龙汽车新能源科技有限公司 | Solving method for electric quantity optimal matching scheme of ultrathin battery pack |
| CN113688530B (en) * | 2021-08-30 | 2024-03-08 | 厦门金龙汽车新能源科技有限公司 | Solving method of optimal power distribution scheme of ultrathin battery pack |
| CN114497681A (en) * | 2022-02-14 | 2022-05-13 | 湖北亿纬动力有限公司 | Battery grouping method and power battery pack |
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Effective date of registration: 20220119 Address after: 266500 Minshan Road, Huangdao District, Qingdao, Shandong Applicant after: LISHEN (QINGDAO) NEW ENERGY CO.,LTD. Address before: 300384 Tianjin Binhai New Area Binhai high tech Industrial Development Zone Huayuan science and Technology Park (outer ring) 38 Haitai South Road Applicant before: LISHEN POWER BATTERY SYSTEMS Co.,Ltd. |