CN112909397A - Module end plate and battery module - Google Patents
Module end plate and battery module Download PDFInfo
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- CN112909397A CN112909397A CN202110075479.5A CN202110075479A CN112909397A CN 112909397 A CN112909397 A CN 112909397A CN 202110075479 A CN202110075479 A CN 202110075479A CN 112909397 A CN112909397 A CN 112909397A
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- end plate
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- mounting
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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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Abstract
The application provides a pair of module end plate and battery module relates to battery manufacturing technical field. This module end plate includes end plate and the band limit structure who is connected with the end plate, and the end plate adopts the extrusion mode, is equipped with the mounting groove on the band limit structure, and the mounting groove is used for installing the band. The module end plate adopts a novel structure of combining the extrusion forming 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
The existing module end plate is mostly formed by injection molding or die casting, the structure is complex, the forming process is complex, the cost of a die is very high, and the unit price of the product is also high.
Disclosure of Invention
The object of the present invention includes, for example, providing a module end plate and a battery module, which can simplify the molding process, reduce the cost of a mold, have a reliable structure, contribute to the reduction of the production cost, and make the product 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 belt limiting structure connected with the end plate, wherein the end plate is formed in an extrusion forming mode, and the belt limiting structure is provided with a mounting groove used for mounting a belt.
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 strap limiting structure comprises a first mounting part and a second mounting part which are connected with each other, the first mounting part is connected with the first connecting part, and the second mounting part is connected with the second connecting part; the mounting groove is formed in the first mounting portion, and the second mounting portion is used for being connected with the battery core.
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 optional embodiment, a first connecting hole is formed in the bottom of the groove and used for being connected with the first mounting portion.
In an optional embodiment, a second connection hole is formed at the bottom of the mounting groove, and the second connection hole is arranged corresponding to the first connection hole.
In an optional embodiment, one of the second mounting portion and the second connecting portion is provided with an insert block, and the other is provided with a socket, and the insert block is arranged in the socket.
In an optional 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 battery core.
In an alternative embodiment, the insert block is of a hollow structure.
In an alternative embodiment, a nut is provided in the third connection hole.
In a second aspect, the present invention provides a battery module, which includes a strap, an upper cover, a bottom plate, a battery cell, and the module end plate according to any one of the foregoing embodiments, where the upper cover, the bottom plate, and the module end plate together enclose a frame, 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 process, 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 the band in the battery module of being convenient for, the structure is more reliable, has adopted a novel extrusion end plate and the module structure of band perfect adaptation, when guaranteeing structure 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.
According to the battery module provided by the embodiment of the invention, the bridle and the module end plate are adopted, wherein the end plate is formed by extrusion, so that the mold cost 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 favorably improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic diagram of an overall structure of a module end plate according to an embodiment of the present invention;
fig. 2 is a schematic view illustrating an assembly connection between an end plate of a module end plate and a strap limiting structure according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of an end plate of a module end plate according to an embodiment of the present invention;
fig. 4 is a schematic view of a belt-limiting structure of a module end plate according to an embodiment of the present invention;
FIG. 5 is a schematic view of another view of a strap retaining structure of a module end plate according to an embodiment of the present invention;
fig. 6 is a schematic view of an overall structure of a battery module according to an embodiment of the present invention;
fig. 7 is an exploded schematic view of a battery module according to an embodiment of the invention;
fig. 8 is a schematic view of a battery module according to an embodiment of the invention;
fig. 9 is a schematic structural diagram of another view angle of the battery module according to the embodiment of the invention.
Icon: 100-module end plates; 110-an end plate; 101-a first surface; 102-a second surface; 103-side; 121-a cavity; 130-a groove; 131-a first connection hole; 150-a strap-limiting structure; 151-first mounting portion; 153-a second mounting portion; 155-an insert block; 161-mounting grooves; 163-second connection hole; 165-third connection hole; 170-connecting piece; 200-a battery module; 210-a belt; 211-upper cover; 212-a backplane; 213-electric core.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of 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 present invention, 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 derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. indicate an orientation or a positional relationship based on that shown in the drawings or that the product of the present invention is used as it is, this is only for convenience of description and simplification of the description, and it does not indicate or imply that the device or the element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying 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, battery module on the market, a lot of fixed modes that adopt the band to tie up, 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 uses injection molding or die casting mostly, because injection molding and die casting can generate the spacing groove of band in end plate integrated into one piece in-process, avoid secondary operation, avoid processing the spacing groove of band on the end plate alone promptly, practice thrift the cost. However, the end plate is formed by die casting or injection molding, which results in high cost of the mold and complicated structure.
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 present invention is applied to a battery module 200. This module end plate 100 includes end plate 110 and the band limit structure 150 of being connected with end plate 110, and end plate 110 adopts the extrusion mode, is equipped with mounting groove 161 on the band limit structure 150, and mounting groove 161 is used for installing band 210. The end plate 110 is formed in an extrusion manner, so that the production cost of the die can be reduced; through being connected with end plate 110 by band limit structure 150, can fix band 210 swiftly, effectively, ensure the reliability and the security of battery module 200 structure, have very big popularization and application and worth.
At present, the end plate 110 of the extruded section is not used in the industry, because the extrusion process cannot directly form the limiting notch of the strap 210, if the limiting notch of the strap 210 is processed again, the production cost is undoubtedly increased, and the time and the labor are wasted. Through the technical scheme of this embodiment, adopt the extrusion mode to make end plate 110 earlier, again with band limit structure 150 and end plate 110 fixed connection, the technological bottleneck that extrusion section end plate 110 can't be applied to band 210 module scheme has been broken successfully, this embodiment extrusion's end plate 110 is not only lower than the mould cost of moulding plastics or die-casting adoption on the mould cost, and technology is simpler, do not need unnecessary secondary operation process behind the product shaping of end plate 110, manufacturing cost is controllable, more advantage on whole product unit price, be favorable to improving the market competition of product, also can guarantee the high security performance of the battery module 200 that adopts this module end plate 100 simultaneously.
Referring to fig. 3, optionally, the end plate 110 includes a first surface 101 and a second surface 102 disposed opposite to each other, and a side surface 103 for connecting the first surface 101 and the second surface 102, the first surface 101 is provided with a first connecting portion, and the side surface 103 is provided with a second connecting portion; the first connecting portion and the second connecting portion are respectively used for connecting with the strap limiting structure 150. Further, a groove 130 is disposed 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 a strap retention structure 150. It is easy to understand that the end plate 110 is integrally formed by extrusion, and the groove 130 on the first surface 101 and the cavity 121 on the side surface 103 are both generated in the extrusion forming process, so that the process is simpler, the production efficiency is high, and the mold cost is low. Optionally, the end plate 110 is formed by an aluminum extrusion process, and the material of the end plate 110 is 6063-T6; the first surface 101 includes two grooves 130 spaced apart from each other, and the grooves 130 are through-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 can be easily formed in the extrusion molding process. The number of the cavities 121 may be one or more, in this embodiment, the number of the cavities 121 is multiple, the multiple cavities 121 are arranged on the side surface 103 at intervals, and the cavities 121 may penetrate through the end plate 110 from the side surface 103, 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 penetrate through the end plate 110, which is not specifically limited herein. It should be noted that each cavity 121 may have the same or different cross-sectional shape, including but not limited to a circle, an ellipse, a rectangle, a triangle, a trapezoid, or any other shape. In this embodiment, the number of the cavities 121 is plural, which not only has a weight reduction effect, and can reduce the overall weight of the end plate 110, but also is convenient for extrusion process forming, and saves raw materials.
Optionally, at least a first connection hole 131 is formed at the bottom of the groove 130 for being fixedly connected with the strap limiting structure 150. In this embodiment, the number of the first connection holes 131 is three, and the three first connection holes 131 are uniformly spaced along the length direction of the groove 130. The first connection hole 131 may be formed by machining, and optionally, the first connection hole 131 is a circular hole for installing a connector 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 connection holes 131 may be flexibly set according to actual situations, and the fixing manner of the end plate 110 and the strap limiting structure 150 may be a snap-fit manner, a rivet-fit manner, or a bolt-on manner, which is not limited herein.
Referring to fig. 4 and 5, optionally, 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 used for connecting with the battery cell 213.
It will be appreciated that the first mounting portion 151 is sized to fit within the recess 130 of the first surface 101 of the end plate 110, the first mounting portion 151 being 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 connecting member 170, such as a rivet or a screw, sequentially passes through the second connecting hole 163 and the first connecting hole 131, so as to fixedly connect 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, the plurality of mounting grooves 161 are spaced apart, 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 in most of the battery modules 200, the tie 210 sleeved on the end plate 110 is two, in this embodiment, the number of the mounting grooves 161 is set to three, on one hand, the mounting position of one tie 210 is reserved, and under some special conditions, if the expansive force of the battery core 213 is large, one tie 210 can be additionally reinforced, thereby improving the reliability of the structure of the battery module 200. On the other hand, reserve an installation groove 161 more, can play the subtract and glue the effect, material saving, the production technology of the band limit structure 150 of being convenient for reduces the whole weight of module end plate 100 simultaneously, is favorable to battery module 200's lightweight.
Of the second mounting portion 153 and the second connecting portion, one is provided with an insert 155, and the other is provided with a receptacle, and the insert 155 is provided in the receptacle. 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 disposed along a side of the first mounting portion 151 departing from the mounting groove 161 in a protruding manner, and the second mounting portion 153 serves as an output electrode base of the battery module 200 and is used for being connected to an output end of the battery cell 213. Further, one side of the second mounting portion 153 is provided with a third connecting hole 165, the third connecting hole 165 is used for being connected with the output end of the electric core 213, and optionally, a nut is arranged in the third connecting hole 165, so that the output end of the electric core 213 is locked by a screw or other connecting piece 170, and wiring or connection with other modules is facilitated. The other side of the second mounting portion 153 is provided with an insert 155 for connecting with the end plate 110, and the insert 155 is located on one side of the first mounting portion 151 departing from the mounting groove 161. The second connecting portion is provided with a jack for matching with the insert block 155. Alternatively, the insertion hole on the second connecting portion may adopt one of the cavities 121 on the side surface 103 of the end plate 110, and the shape and size of the insertion block 155 are adapted to the shape and size of one of the cavities 121, that is, the insertion block 155 may be inserted into the cavity 121, so as to further achieve the assembly of the end plate 110 and the strap limiting structure 150. In addition, the insertion block 155 is hidden in the cavity 121 of the end plate 110 in the insertion 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 improved, and the structural strength can be improved. Optionally, the insert block 155 is of a hollow structure, so that raw materials are saved, weight is reduced, and assembly is facilitated. In this embodiment, the cross-sectional shape 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 battery cell 213 includes a positive output end and a negative output end, and therefore the number of the second mounting portions 153, that is, the number of the output pole bases, should also be two, in this embodiment, the number of the strap limiting structures 150 includes two, the two structures are completely the same, the two grooves 130 on the first surface 101 of the end plate 110 are respectively provided with one first mounting portion 151, and the insertion 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 by the present embodiment is as follows:
Referring to fig. 6 to 9, an 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 plate 100 according to any of the foregoing embodiments, wherein the upper cover 211, the bottom plate 212, and the module end plate 100 together enclose a frame, the battery cell 213 is disposed in the frame, and the strap 210 is sleeved on two oppositely disposed module end plates 100. Optionally, the tie bars 210 are made of plastic steel strips, the number of the tie bars 210 is two, the two tie bars 210 are arranged at intervals, and each tie bar 210 surrounds a circle along the side surface 103 of the battery module 200, that is, the tie bars are sleeved on the battery core 213 and the module end plate 100 at the same time. Optionally, an insulating plate is further disposed between the module end plate 100 and the battery cell 213, so as 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 advantages:
in the module end plate 100 provided by the embodiment of the invention, the end plate 110 is integrally formed by adopting an extrusion mode and is fixedly connected with the strap limiting structure 150, so that the technical bottleneck that the extruded section end plate 110 cannot be applied to the strap 210 module scheme is successfully broken through, the module end plate 100 is lower in mold cost than that of a mold adopted by 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 whole product unit price is more advantageous, the market competitiveness of the product is favorably improved, and meanwhile, the high safety performance of a 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, has the advantages of simple structure, convenient assembly, simple production process and low cost of the adopted die, greatly reduces the production cost of the battery module 200, and has reliable structure and high safety.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. The utility model provides a module end plate, its characterized in that, including end plate (110) and with band limit structure (150) that end plate (110) are connected, end plate (110) adopt the extrusion mode, be equipped with mounting groove (161) on band limit structure (150), mounting groove (161) are used for installing band (210).
2. Module end plate according to claim 1, wherein the end plate (110) comprises a first surface (101) and a second surface (102) arranged opposite each other, and a side surface (103) for connecting the first surface (101) and the second surface (102), the first surface (101) being provided with a first connection portion, the side surface (103) being provided with a second connection portion;
the strap limiting structure (150) comprises a first mounting part (151) and a second mounting part (153) which are connected with each other, 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; the first installation part (151) is provided with the installation groove (161), and the second installation part (153) is used for being connected with the battery core (213).
3. A module end plate according to claim 2, wherein the first connection portion is provided with a recess (130), and the first mounting portion (151) is provided in the recess (130).
4. The module end plate of claim 3, wherein the bottom of the groove (130) is formed with a first coupling hole (131) for coupling with the first mounting portion (151).
5. The module end plate of claim 4, wherein 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).
6. The module end plate of claim 2, wherein one of the second mounting portion (153) and the second connecting portion is provided with an insert (155), and the other is provided with a receptacle, the insert (155) being provided in the receptacle.
7. The module end plate of claim 6, wherein the second connecting portion has a hole, the second mounting portion (153) has a third connecting hole (165) at one side thereof and the insert block (155) at the other side thereof, and the third connecting hole (165) is used for connecting with the battery cell (213).
8. The module end plate of claim 7, wherein the insert block (155) is of a hollow construction.
9. The module end plate of claim 7, wherein a nut is provided in the third coupling hole (165).
10. A battery module, comprising a belt (210), an upper cover (211), a bottom plate (212), a battery cell (213) and the module end plate (100) of any one of claims 1 to 9, wherein the upper cover (211), the bottom plate (212) and the module end plate (100) jointly enclose a frame, the battery cell (213) is disposed in the frame, and the belt (210) is disposed on the module end plate (100).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110075479.5A CN112909397B (en) | 2021-01-20 | 2021-01-20 | Module end plate and battery module |
Applications Claiming Priority (1)
| 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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| Publication Number | Publication Date |
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| CN112909397A true CN112909397A (en) | 2021-06-04 |
| CN112909397B CN112909397B (en) | 2023-05-16 |
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| CN202110075479.5A Active CN112909397B (en) | 2021-01-20 | 2021-01-20 | Module end plate and battery module |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN112909397B (en) | 2023-05-16 |
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