CN112909397B - Module end plate and battery module - Google Patents
Module end plate and battery module Download PDFInfo
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- CN112909397B CN112909397B CN202110075479.5A CN202110075479A CN112909397B CN 112909397 B CN112909397 B CN 112909397B CN 202110075479 A CN202110075479 A CN 202110075479A CN 112909397 B CN112909397 B CN 112909397B
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- end plate
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- strap
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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
Abstract
The application provides a module end plate and battery module relates to battery manufacturing technical field. The module end plate comprises an end plate and a strap limiting structure connected with the end plate, wherein the end plate adopts an extrusion forming mode, and a mounting groove is formed in the strap limiting structure and used for mounting a strap. The module end plate adopts a novel structure of combining the extrusion molding end plate and the binding belt, so that the production cost can be effectively reduced, and the production process is simplified.
Description
Technical Field
The invention relates to the technical field of battery manufacturing, in particular to a module end plate and a battery module.
Background
Most of the existing module end plates are formed by injection molding or die casting, so that the structure is complex, the forming process is complex, the die cost is high, and the unit price of the product is high.
Disclosure of Invention
The invention aims to provide a module end plate and a battery module, which can simplify the forming process, reduce the die cost, have reliable structure, are beneficial to reducing the production cost and lead the product to be more competitive in the market.
Embodiments of the invention may be implemented as follows:
in a first aspect, the invention provides a module end plate, which comprises an end plate and a strap limiting structure connected with the end plate, wherein the end plate adopts an extrusion molding mode, and the strap limiting structure is provided with a mounting groove for mounting a strap.
In an alternative embodiment, the end plate comprises a first surface and a second surface which are oppositely arranged, and a side surface for connecting the first surface and the second surface, wherein the first surface is provided with a first connecting part, and the side surface is provided with a second connecting part;
the binding band limiting structure comprises a first installation part and a second installation part which are connected with each other, wherein the first installation part is connected with the first connection part, and the second installation part is connected with the second connection part; the first installation part is provided with the installation groove, and the second installation part is used for being connected with the battery cell.
In an alternative embodiment, a groove is provided on the first connecting portion, and the first mounting portion is provided in the groove.
In an alternative embodiment, a first connecting hole is formed at the bottom of the groove, and is used for connecting with the first mounting portion.
In an alternative embodiment, a second connecting hole is formed in the bottom of the mounting groove, and the second connecting hole is arranged corresponding to the first connecting hole.
In an alternative embodiment, one of the second mounting portion and the second connecting portion is provided with a plug, and the other is provided with a jack, and the plug is arranged in the jack.
In an alternative embodiment, the second connecting portion is provided with an insertion hole, one side of the second mounting portion is provided with a third connecting hole, the other side of the second mounting portion is provided with the insertion block, and the third connecting hole is used for being connected with the electric core.
In an alternative embodiment, the insert block is hollow.
In an alternative embodiment, a nut is disposed in the third connecting hole.
In a second aspect, the present invention provides a battery module, including a strap, an upper cover, a bottom plate, a battery cell, and a module end plate according to any one of the foregoing embodiments, where the upper cover, the bottom plate, and the module end plate enclose a frame together, the battery cell is disposed in the frame, and the strap is disposed on the module end plate.
The module end plate and the battery module provided by the embodiment of the invention have the beneficial effects that:
this module end plate adopts extrusion technology, and the shaping mode is simpler, and the mould cost is lower, simultaneously with band limit structure and end plate fixed connection, the installation of band in the battery module of being convenient for, and the structure is more reliable, has adopted a novel extrusion end plate and band perfect adaptation's module structure, when guaranteeing structural security performance, also greatly reduced mould cost and whole manufacturing cost, be favorable to promoting the market competition of product, have very big popularization and application and worth.
The battery module provided by the embodiment of the invention adopts the binding belt and the module end plate, wherein the end plate adopts an extrusion molding mode, so that the cost of a die is greatly reduced, the production process is simplified, the production cost is reduced on the premise of ensuring the reliability and the safety of the product structure, and the market competitiveness of the product is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of the overall structure of a module end plate according to an embodiment of the present invention;
FIG. 2 is a schematic diagram illustrating an assembly connection between an end plate of a module end plate and a strap stop structure according to an embodiment of the present invention;
FIG. 3 is a schematic view of an end plate of a module end plate according to an embodiment of the present invention;
FIG. 4 is a schematic view illustrating a structure of a strap-limiting structure of a module end plate according to an embodiment of the present invention;
FIG. 5 is a schematic view illustrating another view of a strap-limiting structure of a module end plate according to an embodiment of the present invention;
fig. 6 is a schematic diagram illustrating the overall structure of a battery module according to an embodiment of the present invention;
fig. 7 is an exploded view of a battery module according to an embodiment of the present invention;
fig. 8 is a schematic view illustrating a structure of a battery module according to an embodiment of the present invention;
fig. 9 is a schematic view illustrating a structure of a battery module according to another embodiment of the present invention.
Icon: 100-module end plates; 110-end plates; 101-a first surface; 102-a second surface; 103-side; 121-a cavity; 130-grooves; 131-first connection holes; 150-a strap limiting structure; 151-a first mounting portion; 153-a second mounting portion; 155-plug-in block; 161-mounting slots; 163-second connection hole; 165-a third connection hole; 170-a connector; 200-battery module; 210-banding; 211-upper cover; 212-a bottom plate; 213-cell.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should be noted that, if the terms "upper", "lower", "inner", "outer", and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, or the azimuth or the positional relationship in which the inventive product is conventionally put in use, it is merely for convenience of describing the present invention and simplifying the description, and it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus it should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, if any, are used merely for distinguishing between descriptions and not for indicating or implying a relative importance.
It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.
At present, a plurality of battery modules on the market adopt the fixed mode that the band was tied up, and the band cover is established at the surface of two end plates, prevents that a plurality of electric cores in the battery module from expanding. But the end plate of current battery module mostly uses injection molding or die casting, because injection molding and die casting can produce the spacing groove of band at end plate integrated into one piece in-process, avoid secondary operation, avoid the spacing groove of processing band on the end plate alone promptly, practice thrift the cost. However, the end plate is molded by die casting or injection molding, so that the die is high in cost, the structure is complex, and the production cost is high.
In order to solve the defects in the prior art, the present application provides a module end plate 100, which can simplify the production process, reduce the mold cost and the overall production cost of the product, and simultaneously ensure the reliability, safety and stability of the battery module 200 using the module end plate 100.
Referring to fig. 1 and 2, a module end plate 100 according to an embodiment of the invention is applied to a battery module 200. The module end plate 100 comprises an end plate 110 and a strap limiting structure 150 connected with the end plate 110, wherein the end plate 110 is formed by extrusion, the strap limiting structure 150 is provided with a mounting groove 161, and the mounting groove 161 is used for mounting a strap 210. The end plate 110 is formed by extrusion, so that the production cost of the die can be reduced; the strap 210 can be quickly and effectively fixed by connecting the strap limiting structure 150 with the end plate 110, so that the reliability and safety of the structure of the battery module 200 are ensured, and the battery module has great popularization and application values.
Currently, the end plate 110 of the extruded profile is not used in the industry, because the extrusion process cannot directly form the limit notch of the strap 210, and if the limit notch of the strap 210 is processed again, the production cost is increased, which is time-consuming and labor-consuming. Through the technical scheme of this embodiment, the end plate 110 is made by adopting the extrusion molding mode firstly, and then the strap limiting structure 150 is fixedly connected with the end plate 110, so that the technical bottleneck that the extrusion profile end plate 110 cannot be applied to the strap 210 module scheme is successfully broken, the cost of the die of the end plate 110 formed by extrusion molding in this embodiment is lower than that of the die adopted by injection molding or die casting, the process is simpler, no extra secondary processing procedure is needed after the product of the end plate 110 is molded, the production cost is controllable, the price of the whole product is more advantageous, the market competitiveness of the product is improved, and meanwhile, the high safety performance of the battery module 200 adopting the module end plate 100 can be ensured.
Referring to fig. 3, alternatively, the end plate 110 includes a first surface 101 and a second surface 102 disposed opposite to each other, and a side 103 for connecting the first surface 101 and the second surface 102, where the first surface 101 is provided with a first connection portion, and the side 103 is provided with a second connection portion; the first connection portion and the second connection portion are respectively used for being connected with the strap limiting structure 150. Further, a groove 130 is provided on the first connecting portion for installing the strap limiting structure 150. The side 103 is provided with at least one cavity 121 for connection with the strap retaining structure 150. It is easy to understand that the end plate 110 is integrally formed by extrusion, the grooves 130 on the first surface 101 and the cavities 121 on the side surfaces 103 are formed in the extrusion process, so that the process is simpler, the production efficiency is high, and the die cost is low. Optionally, the end plate 110 is formed by an aluminum extrusion process, and 6063-T6 is adopted as the material of the end plate 110; the first surface 101 includes two grooves 130 disposed at intervals, and the grooves 130 are in a penetrating structure on the first surface 101, that is, the length of the grooves 130 is equal to the width of the first surface 101, so that the grooves 130 are conveniently formed in an extrusion molding process. The number of the cavities 121 may be one or more, in this embodiment, the number of the cavities 121 is plural, and the plurality of cavities 121 are disposed on the side 103 at intervals, and the cavities 121 may extend from the side 103 through the end plate 110, that is, the length of the cavities 121 is equal to the width of the first surface 101 of the end plate 110, or may not extend through the end plate 110, which is not specifically limited herein. The cross-sectional shape of each cavity 121 may be the same or different, and includes, but is not limited to, circular, elliptical, rectangular, triangular, trapezoidal, or any other shape. The number of the medium-sized cavities 121 is plural in this embodiment, so that the weight of the end plate 110 can be reduced, the extrusion process is convenient, and raw materials are saved.
Optionally, at least a first connecting hole 131 is formed at the bottom of the groove 130, and is used for being fixedly connected with the strap limiting structure 150. In this embodiment, the number of the first connecting holes 131 is three, and the three first connecting holes 131 are uniformly spaced along the length direction of the groove 130. The first connecting hole 131 may be formed by machining, alternatively, the first connecting hole 131 is a circular hole for installing a connecting member 170 such as a rivet, so as to fixedly connect the end plate 110 and the strap limiting structure 150. Of course, the number and shape of the first connecting holes 131 are not limited to this, and may be flexibly set according to practical situations, and the fixing manner of the end plate 110 and the strap limiting structure 150 may be a fastening manner, a riveting manner, a bolting manner, or the like, which is not particularly limited herein.
Referring to fig. 4 and 5, alternatively, the strap limiting structure 150 includes a first mounting portion 151 and a second mounting portion 153 connected to each other, the first mounting portion 151 is connected to the first connecting portion, and the second mounting portion 153 is connected to the second connecting portion; the first mounting portion 151 is provided with a mounting groove 161, and the second mounting portion 153 is connected to the battery cell 213.
It will be appreciated that the shape and size of the first mounting portion 151 is adapted to the shape and size of the recess 130 of the first surface 101 of the end plate 110, and that the first mounting portion 151 is disposed within the recess 130. Further, the bottom of the mounting groove 161 is provided with a second connection hole 163, and the second connection hole 163 is disposed corresponding to the first connection hole 131. The rivet or screw or other connecting member 170 sequentially passes through the second connecting hole 163 and the first connecting hole 131 to achieve the fixed connection of the end plate 110 and the strap-limiting structure 150. Alternatively, the first mounting portion 151 is substantially rectangular, the number of the mounting grooves 161 is one or more, and the plurality of mounting grooves 161 are arranged at intervals, and the length of each mounting groove 161 is the width of the first mounting portion 151. In this embodiment, the number of the mounting grooves 161 is three, and since the number of the belts 210 sleeved on the end plate 110 is two in most battery modules 200, in this embodiment, the number of the mounting grooves 161 is three, on one hand, one more mounting position of the belts 210 is reserved, and in some special cases, if the expansion force of the battery cells 213 is large, one belt 210 can be additionally reinforced, so that the reliability of the structure of the battery module 200 is improved. On the other hand, one more mounting groove 161 is reserved, so that the glue reducing effect can be achieved, materials are saved, the production process of the binding band limiting structure 150 is facilitated, the overall weight of the module end plate 100 is reduced, and the weight reduction of the battery module 200 is facilitated.
One of the second mounting portion 153 and the second connecting portion is provided with an insert 155, and the other is provided with an insertion hole, and the insert 155 is disposed in the insertion hole. In this embodiment, the second mounting portion 153 is connected to an end of the first mounting portion 151, and the second mounting portion 153 is protruding along a side of the first mounting portion 151 away from the mounting groove 161, and the second mounting portion 153 is used as an output electrode base of the battery module 200 for connection with an output end of the battery cell 213. Further, a third connection hole 165 is provided at one side of the second mounting portion 153, and the third connection hole 165 is used for connecting with the output end of the battery core 213, and optionally, a nut is provided in the third connection hole 165, so as to lock the output end of the battery core 213 by using a screw or other connecting member 170, so as to facilitate connection of wires or other modules. The other side of the second mounting portion 153 is provided with an insert 155 for connection with the end plate 110, and the insert 155 is located at a side of the first mounting portion 151 facing away from the mounting groove 161. The second connecting portion is provided with an insertion hole for being matched with the insertion block 155. Alternatively, the insertion hole on the second connecting portion may adopt one of the cavities 121 on the side 103 of the end plate 110, and the shape and size of the insert 155 are adapted to the shape and size of one of the cavities 121, so that the insert 155 may be inserted into the cavity 121, thereby further realizing the assembly of the end plate 110 and the strap limiting structure 150. In addition, the insert 155 is hidden in the cavity 121 of the end plate 110 in this plugging manner, so that the overall size of the module end plate 100 can be reduced, the volume can be reduced, the connection reliability can be increased, and the structural strength can be improved. Alternatively, the insert 155 is hollow, which saves raw materials, reduces weight, and facilitates assembly. In this embodiment, the cross-section of the insert 155 is triangular, which facilitates positioning and assembly and prevents the insert 155 from rotating in the cavity 121 of the end plate 110.
It should be noted that, in the battery module 200, the output end of the electric core 213 includes an anode output end and a cathode output end, so that two second mounting portions 153, that is, the number of output electrode bases should be set, in this embodiment, the number of the strap limiting structures 150 includes two, the two structures are completely identical, two grooves 130 on the first surface 101 of the end plate 110 are respectively provided with a first mounting portion 151, and the insert blocks 155 on the second mounting portion 153 are respectively inserted into the cavities 121 at corresponding positions.
The assembly principle of the module end plate 100 provided in this embodiment is as follows:
the end plate 110 is formed by extrusion of aluminum, the groove 130 of the first surface 101 and the cavity 121 of the side 103 are integrally formed in the forming process, the strap limiting structure 150 can also be formed integrally, in the assembling process, the insert 155 on the second mounting portion 153 of the strap limiting structure 150 is inserted into the cavity 121 of the side 103 of the end plate 110, the first mounting portion 151 is clamped in the groove 130 of the first surface 101 of the end plate 110, then the connecting piece 170 such as a rivet or a screw sequentially passes through the second connecting hole 163 and the first connecting hole 131, the fixed connection of the end plate 110 and the strap limiting structure 150 is realized, and the mounting modes of the two strap limiting structures 150 are the same, so that the assembly of the module end plate 100 is completed.
Referring to fig. 6 to 9, the embodiment of the invention further provides a battery module 200, which includes a strap 210, an upper cover 211, a bottom plate 212, a battery cell 213, and the module end plates 100 according to any of the foregoing embodiments, wherein the upper cover 211, the bottom plate 212, and the module end plates 100 together enclose a frame, the battery cell 213 is disposed in the frame, and the strap 210 is sleeved on two opposite module end plates 100. Alternatively, the bands 210 are plastic steel bands, and the number of the bands 210 is two, and the two bands 210 are spaced apart, and each band 210 is looped around the side 103 of the battery module 200, that is, is simultaneously sleeved on the battery cell 213 and the module end plate 100. Optionally, an insulating plate is further disposed between the module end plate 100 and the battery cell 213 to improve the safety performance of the battery module 200.
In summary, the embodiment of the invention provides a module end plate 100 and a battery module 200, which have the following beneficial effects:
according to the module end plate 100 provided by the embodiment of the invention, the end plate 110 is integrally formed in an extrusion mode and is fixedly connected with the strap limiting structure 150, so that the technical bottleneck that the extrusion profile end plate 110 cannot be applied to the strap 210 module scheme is successfully broken, the module end plate 100 is lower in die cost than a die used for injection molding or die casting, the process is simpler, redundant secondary processing is not needed after the end plate 110 is formed, the production cost is controllable, the overall product unit price is more advantageous, the market competitiveness of the product is improved, and meanwhile, the high safety performance of the battery module 200 adopting the module end plate 100 can be ensured.
The battery module 200 provided by the embodiment of the invention adopts the module end plate 100, and has the advantages of simple structure, convenient assembly, simple production process, low cost of the adopted mould, greatly reduced production cost of the battery module 200, reliable structure and high safety.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present invention should be included in the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. The module end plate is characterized by comprising an end plate (110) and a strap limiting structure (150) connected with the end plate (110), wherein the end plate (110) is formed in an extrusion mode, a mounting groove (161) is formed in the strap limiting structure (150), and the mounting groove (161) is used for mounting a strap (210);
the end plate (110) comprises a first surface (101) and a second surface (102) which are oppositely arranged, and an upper side (103) for connecting the first surface (101) and the second surface (102), wherein the first surface (101) is provided with a first connecting part, and a groove (130) is arranged on the first connecting part; the upper side surface (103) is provided with a second connecting part; the second surface (102) is configured to face the cell (213);
the belt limiting structure (150) comprises a first installation part (151) and a second installation part (153) which are integrally formed, and the first installation part (151) is arranged in the groove (130); the first mounting part (151) is provided with the mounting grooves (161), and the length of each mounting groove (161) is the width of the first mounting part (151);
the first mounting part (151) is connected with the first connecting part, and the second mounting part (153) is connected with the second connecting part;
a third connecting hole (165) is formed in one side of the second mounting part (153), an insertion block (155) is arranged on the other side of the second mounting part, and the third connecting hole (165) is used for being connected with the battery cell (213); and the second connecting part is provided with a jack, and the plug block (155) is arranged in the jack.
2. The module end plate according to claim 1, characterized in that a first connecting hole (131) is provided at the bottom of the recess (130) for connection with the first mounting portion (151).
3. The module end plate according to claim 2, wherein a second connection hole (163) is provided at a bottom of the mounting groove (161), and the second connection hole (163) is provided corresponding to the first connection hole (131).
4. The modular end plate of claim 1, wherein the insert block (155) is hollow.
5. The module end plate according to claim 1, characterized in that a nut is provided in the third connecting hole (165).
6. A battery module, characterized by comprising a binding band (210), an upper cover (211), a bottom plate (212), a battery cell (213) and the module end plate (100) according to any one of claims 1 to 5, wherein the upper cover (211), the bottom plate (212) and the module end plate (100) are enclosed together to form a frame, the battery cell (213) is arranged in the frame, and the binding band (210) is arranged on the module end plate (100).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110075479.5A CN112909397B (en) | 2021-01-20 | 2021-01-20 | Module end plate and battery module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110075479.5A CN112909397B (en) | 2021-01-20 | 2021-01-20 | Module end plate and battery module |
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| CN112909397A CN112909397A (en) | 2021-06-04 |
| CN112909397B true CN112909397B (en) | 2023-05-16 |
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| CN211062766U (en) * | 2019-12-30 | 2020-07-21 | 吉利汽车研究院（宁波）有限公司 | Battery module assembly and vehicle |
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| KR101073015B1 (en) * | 2009-04-07 | 2011-10-13 | 삼성에스디아이 주식회사 | Fuel cell stack and fuel cell system |
| CN206727133U (en) * | 2017-05-15 | 2017-12-08 | 宁德时代新能源科技股份有限公司 | Battery modules |
| CN206976456U (en) * | 2017-08-04 | 2018-02-06 | 北方奥钛纳米技术有限公司 | Battery packing assembly and battery component |
| JP2021180063A (en) * | 2018-07-31 | 2021-11-18 | 三洋電機株式会社 | Battery system, and electric vehicle and power storage device having battery system |
| CN109671889A (en) * | 2019-01-02 | 2019-04-23 | 南京创源天地动力科技有限公司 | A kind of new energy battery pack binder structure |
| CN209896117U (en) * | 2019-01-07 | 2020-01-03 | 欣旺达电动汽车电池有限公司 | End plate and battery module |
| CN209496931U (en) * | 2019-04-18 | 2019-10-15 | 宁德时代新能源科技股份有限公司 | A kind of battery modules and battery pack |
| CN209496933U (en) * | 2019-04-19 | 2019-10-15 | 宁德时代新能源科技股份有限公司 | Battery pack |
| CN209709102U (en) * | 2019-05-28 | 2019-11-29 | 芜湖天量电池系统有限公司 | A kind of power battery module structure |
| CN209912938U (en) * | 2019-06-27 | 2020-01-07 | 蜂巢能源科技有限公司 | Mounting bracket for mounting battery module |
| CN211654929U (en) * | 2020-05-14 | 2020-10-09 | 远景睿泰动力技术(上海)有限公司 | Battery module and battery pack |
| CN111430634A (en) * | 2020-05-14 | 2020-07-17 | 远景睿泰动力技术(上海)有限公司 | Battery module and battery pack |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN209804746U (en) * | 2019-04-26 | 2019-12-17 | 东莞天予天正新能源科技有限公司 | power battery module structure |
| CN211062766U (en) * | 2019-12-30 | 2020-07-21 | 吉利汽车研究院（宁波）有限公司 | Battery module assembly and vehicle |
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