CN216958257U - Battery cover plate assembly, battery and battery box - Google Patents
Battery cover plate assembly, battery and battery box Download PDFInfo
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- CN216958257U CN216958257U CN202123091420.XU CN202123091420U CN216958257U CN 216958257 U CN216958257 U CN 216958257U CN 202123091420 U CN202123091420 U CN 202123091420U CN 216958257 U CN216958257 U CN 216958257U
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- cover plate
- mounting hole
- battery
- ring
- plate assembly
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The application relates to a battery cover plate assembly, battery and battery box, battery cover plate assembly includes: the cover plate comprises a substrate and a plastic layer, the substrate and the plastic layer are arranged in a laminated mode, and a first mounting hole and a second mounting hole are formed in the cover plate; the positive pole is arranged in the first mounting hole in a penetrating mode, a first connecting piece is arranged at the bottom of the positive pole and is attached to the plastic layer, and the positive pole and the first connecting piece are integrally formed; during the negative pole post, negative pole post were worn to locate the second mounting hole, negative pole post bottom was equipped with the second switching piece, and second switching piece and plastic layer laminating, negative pole post and second switching piece integrated into one piece to and, all overlap on positive pole post and the negative pole post and be equipped with the sealing washer. According to the battery cover plate assembly, the pole (the positive pole or the negative pole) and the adapter sheet (the first adapter sheet or the second adapter sheet) are integrally formed, so that the welding process can be reduced, and battery faults caused by melting and softening of the sealing ring due to heat generated during welding can be effectively avoided.
Description
Technical Field
The application relates to the technical field of lithium batteries, in particular to a battery cover plate assembly, a battery and a battery box.
Background
At present, with the emergence of more and more electric vehicles, the demand of power batteries is increasing day by day, but the frequent safety accidents exist together with the demand, so more and more enterprises begin to carry out strict inspection from various aspects including the quality of incoming materials, the rationality of structures and the like, and the potential hazards of the batteries are reduced to the minimum as possible.
The utility model discloses a battery, including the sealing washer, the sealing washer compresses tightly through aluminium spacer ring and utmost point post and reaches the result of use, but in the forming process of battery, the aluminium spacer ring need carry out laser welding with the apron, utmost point post lower surface needs carry out laser welding with the switching piece, and can produce a large amount of heats at welded in-process, the sealing washer is nearer apart from the welding position simultaneously, can lead to the sealing washer to soften the inefficacy battery weeping that arouses, serious probably makes the sealing washer melting lead to negative pole post and apron intercommunication, thereby arouse the battery short circuit.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides a battery cover plate assembly which can effectively avoid battery faults caused by melting and softening of a sealing ring.
In a first aspect, an embodiment of the present invention provides a battery cover plate assembly, which includes: the cover plate comprises a substrate and a plastic layer, the substrate and the plastic layer are arranged in a laminated mode, and a first mounting hole and a second mounting hole are formed in the cover plate; the positive pole penetrates through the first mounting hole, a first connecting piece is arranged at the bottom of the positive pole and is attached to the plastic layer, and the positive pole and the first connecting piece are integrally formed; during the negative pole post, negative pole post were worn to locate the second mounting hole, negative pole post bottom was equipped with the second switching piece, and the laminating of second switching piece and plastic layer, negative pole post and second switching piece integrated into one piece to and, all overlap on positive pole post and the negative pole post and be equipped with the sealing washer.
Optionally, in the battery cover plate assembly of the embodiment of the utility model, the first adapter sheet and the second adapter sheet are different in shape.
Optionally, according to the battery cover plate assembly of the embodiment of the present invention, a conductive plastic ring is sleeved on a portion of the positive post exposed outside the first mounting hole, a set of first protrusions is disposed on a side of the conductive plastic ring facing the substrate, an insulating ring is sleeved on a portion of the negative post exposed outside the second mounting hole, a set of second protrusions is disposed on a side of the insulating ring facing the substrate, a set of first blind holes and a set of second blind holes are disposed on the substrate, the first protrusions are embedded in the first blind holes, and the second protrusions are embedded in the second blind holes.
Optionally, the arrangement of the positions of the plurality of first protrusions in the set of first protrusions is different from the arrangement of the positions of the plurality of second protrusions in the set of second protrusions.
Optionally, the part of the positive post exposed outside the first mounting hole is sleeved with a conductive plastic ring, the part of the negative post exposed outside the second mounting hole is sleeved with an insulating ring, the conductive plastic ring and the positive post define a first annular groove together, the insulating ring and the negative post define a second annular groove together, the first annular groove is embedded with the first conductive ring, and the second annular groove is embedded with the second conductive ring.
Optionally, the upper surface of the first conductive ring is lower than the upper surface of the positive pole, and the upper surface of the second conductive ring is lower than the upper surface of the negative pole.
Optionally, the upper surface of the first conductive ring is flush with the upper surface of the conductive plastic ring, and the upper surface of the second conductive ring is flush with the upper surface of the insulating ring.
According to the battery cover plate assembly provided by the embodiment of the utility model, the first mounting hole and the second mounting hole are stepped holes, the diameter of the part of the first mounting hole on the plastic layer is larger than that of the part of the first mounting hole on the base plate, the diameter of the part of the second mounting hole on the plastic layer is larger than that of the part of the second mounting hole on the base plate, the sealing ring comprises a main body part and a skirt edge arranged along the circumferential direction of the lower end of the main body part, and the two skirt edges are respectively pressed between the cover plate and the first adapter plate and between the cover plate and the second adapter plate.
In a second aspect, an embodiment of the present invention further provides a battery, where the battery includes a substrate and the battery cover plate assembly provided in the first aspect of the embodiment of the present invention, the substrate and the battery cover plate assembly together define a mounting cavity, at least one battery cell is disposed in the mounting cavity, a positive tab of the battery cell is electrically connected to the first interposer, and a negative tab of the battery cell is electrically connected to the second interposer.
In a third aspect, there is also provided, according to an embodiment of the present invention, a battery box including the battery provided in the second aspect of the embodiment of the present invention.
According to the battery cover plate assembly provided by the embodiment of the utility model, the positive pole and the first adapter sheet are integrally formed, and the negative pole and the second adapter sheet are integrally formed, so that the welding process of the positive pole and the first adapter sheet and the welding process of the negative pole and the second adapter sheet can be reduced, and the battery fault caused by the melting and softening of the sealing ring due to the heat generated during welding can be effectively avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is an exploded view of a battery cover plate assembly according to an embodiment of the present invention;
fig. 2 is a cross-sectional view of a battery cover plate assembly according to an embodiment of the present invention;
FIG. 3 is an enlarged view at A in FIG. 2;
FIG. 4 is a top view of a battery cover plate assembly according to an embodiment of the present invention;
fig. 5 is a bottom view of a battery cover plate assembly according to an embodiment of the present invention.
Reference numerals:
the battery cover plate assembly 1 is provided with a battery cover plate,
the cover plate 10, the substrate 11, the plastic layer 12, the first mounting hole 13, the first sub-hole 132, the second sub-hole 134, the second mounting hole 14, the third sub-hole 142, the fourth sub-hole 144,
the position of the positive post 20, the first rotation piece 21,
the negative post 30, the second tab 31,
the sealing ring 40, the conductive plastic ring 51, the first blind hole 512, the first protrusion 514, the insulating ring 52, the second blind hole 522, the second protrusion 524, the first conductive ring 60, and the second conductive ring 70.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. 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 application.
As shown in fig. 1 to 3, a battery cover plate assembly 1 according to an embodiment of the present invention includes: a cover plate 10, a positive post 20, and a negative post 30.
Specifically, the cover plate 10 comprises a substrate 11 and a plastic layer 12, the substrate 11 and the plastic layer 12 are stacked, and a first mounting hole 13 and a second mounting hole 14 are formed in the cover plate 10; the positive pole 20 penetrates through the first mounting hole 13, a first connecting piece 21 is arranged at the bottom of the positive pole 20, the first connecting piece 21 is attached to the plastic layer 12, and the positive pole 20 and the first connecting piece 21 are integrally formed; during the negative pole post 30 wore to locate second mounting hole 14, negative pole post 30 bottom was equipped with second adaptor piece 31, and second adaptor piece 31 and the laminating of plastic layer 12, negative pole post 30 and second adaptor piece 31 integrated into one piece to and, all overlap on positive post 20 and the negative pole post 30 and be equipped with sealing washer 40.
According to the battery cover plate assembly 1 provided by the embodiment of the utility model, the positive pole 20 and the first adapter plate 21 are integrally formed, and the negative pole 30 and the second adapter plate 31 are integrally formed, so that on one hand, the welding process of the positive pole 20 and the first adapter plate 21 and the welding process of the negative pole 30 and the second adapter plate 31 can be reduced, the battery fault caused by melting and softening of the sealing ring 40 due to heat generated during welding can be effectively avoided, on the other hand, the situations of insufficient welding, missing welding and the like between the positive pole 20 and the first adapter plate 21 are also avoided, and the situations of insufficient welding, missing welding and the like between the negative pole 30 and the second adapter plate 31 are avoided.
The shape of the positive electrode post 20 and the negative electrode post 30 is not limited to a cylindrical shape, and may be a rectangular shape or a polygonal shape.
As shown in fig. 1 and 5, according to the battery cover plate assembly 1 of the embodiment of the present invention, the first adaptor sheet 21 and the second adaptor sheet 31 have different shapes, so that the battery cover plate assembly can play a foolproof role, prevent the positive pole 20 and the negative pole 30 from being reversely mounted in the first mounting hole 13 and the second mounting hole 14, shorten the mounting time of workers, and reduce the production cost. It should be noted that the shape of the first adaptor piece 21 and the shape of the second adaptor piece 31 may be arbitrarily set as required, and are not limited to the shapes shown in the drawings, and for example, the shapes may be circular, rectangular, elliptical, irregular polygon, and the like.
As shown in fig. 1 to fig. 3, according to the battery cover plate assembly 1 of the embodiment of the utility model, a conductive plastic ring 51 is sleeved on a portion of the positive post 20 exposed outside the first mounting hole 13, a set of first protrusions 514 is disposed on a side of the conductive plastic ring 51 facing to the substrate 11, an insulating ring 52 is sleeved on a portion of the negative post 30 exposed outside the second mounting hole 14, a set of second protrusions 524 is disposed on a side of the insulating ring 52 facing to the substrate 11, a set of first blind holes 512 and a set of second blind holes 522 are disposed on the substrate 11, the first protrusions 514 are embedded in the first blind holes 512, and the second protrusions 524 are embedded in the second blind holes 522. When the battery cover plate assembly 1 is applied to a battery, the positive and negative posts 20 and 30 are insulated from the cover plate 10 by the conductive plastic ring 51 and the insulating ring 52, and the conductive plastic ring 51 can only carry a small amount of charge, so that the base plate 11 can be prevented from being electrochemically corroded when the battery cover plate assembly 1 is applied to the battery; in addition, the conductive plastic ring 51 is fixed on the cover plate 10 through the first protrusion 514, and the insulating ring 52 is fixed on the cover plate 10 through the second protrusion 524, so that the assembly is simple and the cost is saved.
Optionally, the position arrangement of the plurality of first protrusions 514 in the set of first protrusions 514 is different from the position arrangement of the plurality of second protrusions 524 in the set of second protrusions 524, so that the fool-proof effect can be achieved, the conductive plastic ring 51 and the insulating ring 52 are prevented from being reversely assembled, the installation time of workers is shortened, and the production cost is reduced. Correspondingly, it can be understood that the plurality of first blind holes 512 are disposed in a one-to-one correspondence with the plurality of first protrusions 514, and the plurality of second blind holes 522 are disposed in a one-to-one correspondence with the plurality of second protrusions 524, for example, as shown in the embodiment shown in fig. 1, the number of the first blind holes 512 is 2, the number of the corresponding group of first protrusions 514 is two, the number of the second blind holes 522 is 2, the number of the corresponding group of second protrusions 524 is also two, a linear distance between two first protrusions 514 is different from a linear distance between two second protrusions 524, and the arrangement structure is simple so as to play a role of fool-proofing, but the present application is not limited.
As shown in fig. 1 and 4, optionally, a conductive plastic ring 51 is sleeved on a portion of the positive post 20 exposed outside the first mounting hole 13, an insulating ring 52 is sleeved on a portion of the negative post 30 exposed outside the second mounting hole 14, the conductive plastic ring 51 and the positive post 20 define a first annular groove together, the insulating ring 52 and the negative post 30 define a second annular groove together, a first conductive ring 60 is embedded in the first annular groove, a second conductive ring 70 is embedded in the second annular groove, the first conductive ring 60 is electrically connected to the positive post 20, the second conductive ring 70 is electrically connected to the negative post 30, so as to increase a contact area of the positive post 20 and the negative post 30 with the busbar when the battery cover plate assembly 1 is applied to a battery box, in some embodiments, the first conductive ring 60 is welded to the positive post 20, the second conductive ring 70 is welded to the negative post 30, the first conductive ring 60 and the second conductive ring 70 are further used for compressing the sealing ring 40, increasing the sealability between the positive and negative posts 20 and 30 and the first and second mounting holes 13 and 14, respectively, prevents leakage of liquid to fail the battery when the battery cover plate assembly 1 is applied to the battery.
As shown in fig. 2 and 3, optionally, the upper surface of the first conductive ring 60 is lower than the upper surface of the positive post 20, and the upper surface of the second conductive ring 70 is lower than the upper surface of the negative post 30, so that on one hand, the welding of the first conductive ring 60 and the positive post 20, the welding of the second conductive ring 70 and the negative post 30, and simultaneously, when the battery cover plate assembly 1 is applied to a battery box, the connection of the positive post 20 and the negative post 30 with the bus bar are facilitated.
As shown in fig. 2 and fig. 3, optionally, the upper surface of the first conductive ring 60 is flush with the upper surface of the conductive plastic ring 51, and the upper surface of the second conductive ring 70 is flush with the upper surface of the insulating ring 52, which not only facilitates welding of the first conductive ring 60 and the positive post 20, but also enables the conductive plastic ring 51 to perform a certain insulating function on the first conductive ring 60. Similarly, this facilitates welding of the second conductive ring 70 to the negative post 30, and also enables the insulating ring 52 to insulate the second conductive ring 70.
As shown in fig. 1 to 3, in the battery cover plate assembly 1 according to the embodiment of the present invention, each of the first mounting hole 13 and the second mounting hole 14 is a stepped hole, a diameter of a portion of the first mounting hole 13 in the plastic layer 12 is larger than a diameter of a portion of the first mounting hole 13 in the substrate 11, a diameter of a portion of the second mounting hole 14 in the plastic layer 12 is larger than a diameter of a portion of the second mounting hole 14 in the substrate 11, the sealing ring includes a main body portion and a skirt disposed along a lower end circumference of the main body portion, and the two skirts are respectively compressed between the cover plate 10 and the first adaptor piece 21 and between the cover plate 10 and the second adaptor piece 31. This increases the sealing property at the joint between the positive electrode tab 20 and the lid plate 10, and increases the sealing property at the joint between the negative electrode tab 30 and the lid plate 10.
That is, the first mounting hole 13 includes a first sub-hole 132 and a second sub-hole 134, the first sub-hole 132 is located on the substrate 11, the second sub-hole 134 is located on the plastic layer 12, a diameter of the second sub-hole 134 is larger than a diameter of the first sub-hole 132, the second mounting hole 14 includes a third sub-hole 142 and a fourth sub-hole 144, the third sub-hole 142 is located on the substrate 11, the fourth sub-hole 144 is located on the plastic layer 12, and a diameter of the fourth sub-hole 144 is larger than a diameter of the third sub-hole 142.
The battery according to the embodiment of the utility model comprises a substrate 11 and the battery cover plate assembly 1, wherein the substrate 11 and the battery cover plate assembly 1 jointly define a mounting cavity, at least one battery cell is arranged in the mounting cavity, a positive electrode tab of the battery cell is electrically connected with the first adapter sheet 21, and a negative electrode tab of the battery cell is electrically connected with the second adapter sheet 31.
According to the battery provided by the embodiment of the utility model, the positive pole post 20 and the first connecting piece 21 are integrally formed, and the negative pole post 30 and the second connecting piece 31 are integrally formed, so that on one hand, the welding process of the positive pole post 20 and the first connecting piece 21 and the welding process of the negative pole post 30 and the second connecting piece 31 can be reduced, the battery fault caused by melting and softening of the sealing ring 40 due to heat generated during welding can be effectively avoided, on the other hand, the situations of insufficient soldering, missing soldering and the like between the positive pole post 20 and the first connecting piece 21 are also avoided, the situations of insufficient soldering, missing soldering and the like between the negative pole post 30 and the second connecting piece 31 are avoided, and the yield and the service life of the battery are improved.
The battery box comprises the battery.
According to the battery provided by the embodiment of the utility model, the positive pole 20 and the first connecting piece 21 are integrally formed, and the negative pole 30 and the second connecting piece 31 are integrally formed, so that on one hand, the welding process of the positive pole 20 and the first connecting piece 21 and the welding process of the negative pole 30 and the second connecting piece 31 can be reduced, the battery fault caused by melting and softening of the sealing ring 40 due to heat generated during welding can be effectively avoided, on the other hand, the situations of insufficient soldering, missing soldering and the like between the positive pole 20 and the first connecting piece 21 are also avoided, the situations of insufficient soldering, missing soldering and the like between the negative pole 30 and the second connecting piece 31 are avoided, the yield and the service life of the battery are improved, and the service life of a battery box is further prolonged.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Claims (10)
1. A battery cover plate assembly, comprising:
the cover plate comprises a substrate and a plastic layer, the substrate and the plastic layer are arranged in a stacked mode, and a first mounting hole and a second mounting hole are formed in the cover plate;
the positive pole penetrates through the first mounting hole, a first rotating connection piece is arranged at the bottom of the positive pole and is attached to the plastic layer, and the positive pole and the first rotating connection piece are integrally formed;
a negative pole column, the negative pole column is arranged in the second mounting hole in a penetrating way, a second adapter sheet is arranged at the bottom of the negative pole column, the second adapter sheet is attached to the plastic layer, the negative pole column and the second adapter sheet are integrally formed, and,
and the positive pole column and the negative pole column are respectively sleeved with a sealing ring.
2. The battery cover plate assembly of claim 1, wherein the first and second adapter plates are shaped differently.
3. The battery cover plate assembly according to claim 1, wherein a conductive plastic ring is sleeved on a portion of the positive post exposed outside the first mounting hole, a set of first protrusions are arranged on one side of the conductive plastic ring facing the substrate, an insulating ring is sleeved on a portion of the negative post exposed outside the second mounting hole, a set of second protrusions are arranged on one side of the insulating ring facing the substrate, a set of first blind holes and a set of second blind holes are arranged on the substrate, the first protrusions are embedded in the first blind holes, and the second protrusions are embedded in the second blind holes.
4. The battery cover plate assembly of claim 3, wherein an arrangement of positions of a plurality of the first protrusions in the set of first protrusions is different from an arrangement of positions of a plurality of the second protrusions in the set of second protrusions.
5. The battery cover plate assembly according to claim 1, wherein a conductive plastic ring is sleeved on a portion of the positive post exposed outside the first mounting hole, an insulating ring is sleeved on a portion of the negative post exposed outside the second mounting hole, the conductive plastic ring and the positive post define a first annular groove together, the insulating ring and the negative post define a second annular groove together, a first conductive ring is embedded in the first annular groove, and a second conductive ring is embedded in the second annular groove.
6. The battery cover plate assembly of claim 5, wherein an upper surface of the first conductive ring is lower than an upper surface of the positive post and an upper surface of the second conductive ring is lower than an upper surface of the negative post.
7. The battery cover plate assembly of claim 6, wherein an upper surface of the first conductive ring is flush with an upper surface of the conductive plastic ring, and an upper surface of the second conductive ring is flush with an upper surface of the insulating ring.
8. The battery cover plate assembly of claim 1, wherein the first mounting hole and the second mounting hole are stepped holes, the diameter of the first mounting hole in the portion of the plastic layer is larger than the diameter of the first mounting hole in the portion of the base plate, the diameter of the second mounting hole in the portion of the plastic layer is larger than the diameter of the second mounting hole in the portion of the base plate, the sealing ring includes a main body portion and a skirt disposed circumferentially along a lower end of the main body portion, and the two skirts are respectively compressed between the cover plate and the first adapter plate and between the cover plate and the second adapter plate.
9. A battery, comprising: the battery cover plate assembly of any one of claims 1-8, the substrate and the battery cover plate assembly together defining a mounting cavity, at least one electrical core being disposed in the mounting cavity, a positive tab of the electrical core being electrically connected to the first interposer, and a negative tab of the electrical core being electrically connected to the second interposer.
10. A battery box comprising the battery of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123091420.XU CN216958257U (en) | 2021-12-09 | 2021-12-09 | Battery cover plate assembly, battery and battery box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123091420.XU CN216958257U (en) | 2021-12-09 | 2021-12-09 | Battery cover plate assembly, battery and battery box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216958257U true CN216958257U (en) | 2022-07-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123091420.XU Active CN216958257U (en) | 2021-12-09 | 2021-12-09 | Battery cover plate assembly, battery and battery box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216958257U (en) |
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2021
- 2021-12-09 CN CN202123091420.XU patent/CN216958257U/en active Active
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