End plate assembly, battery cell and power device

Abstract

The utility model discloses an end plate assembly, a battery monomer and a power plant, the end plate assembly comprises: a fixed part, an installation space is formed on the fixed part, and first guide parts are formed on the side walls of the two ends of the installation space in the length direction; the baffle is arranged in the installation space, second guide parts are formed at the two ends of the baffle in the length direction, and the baffle and the fixing piece adjust the angle of the baffle in the installation space through cooperation of the first guide parts and the second guide parts. According to the end plate assembly disclosed by the utility model, the baffle plate and the fixing piece are arranged to be two parts, when the baffle plate or the fixing piece is damaged, only the damaged part needs to be replaced, the whole scrapping is not needed, the production and maintenance cost of the single battery is reduced, and the multi-angle adjustment of the baffle plate realizes the isolation protection on the bent tab under different conditions.

Description

Technical Field

[0001] The utility model relates to the technical field of battery manufacturing, in particular to an end plate assembly, a battery cell and a power device. Background Art

[0002] The relevant technology points out that the end plate is an important part of the battery cell structure. In addition to facilitating the insulation packaging of the bare battery cell insulation sheet to the electrode group and then inserting it into the shell, the most important function is to isolate and protect the battery cell tabs, preventing the tabs from stretching and damaging or bending to touch the lower electrode group and causing the battery cell to short-circuit. At present, the end plate is mainly one-piece, and its structure cannot be changed after it is finalized. The baffle has limitations in protecting the tabs from bending. Secondly, if the end plate is damaged during the production process, the entire end plate will be scrapped. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes an end plate assembly, which does not need to be scrapped as a whole, thereby reducing the production and maintenance costs of battery cells.

[0004] The utility model also provides a battery monomer having the end plate assembly.

[0005] The utility model also provides a power device.

[0006] According to the first aspect of the utility model, the end plate assembly includes: a fixing member, on which an installation space is formed, and first guide portions are formed on the side walls at both ends of the length direction of the installation space; a baffle, which is arranged in the installation space, and second guide portions are formed on both ends of the baffle in the length direction, and the baffle and the fixing member cooperate with each other through the first guide portion and the second guide portion to adjust the angle of the baffle in the installation space.

[0007] According to the end plate assembly of the utility model, by setting the baffle and the fixing part as two parts, when the baffle or the fixing part is damaged, only the damaged part needs to be replaced without scrapping the entire part, thereby reducing the production and maintenance costs of the battery cell. The multi-angle adjustment of the baffle realizes isolation protection of the bending of the pole ear under different conditions.

[0008] In some embodiments, one of the first guide portion and the second guide portion is formed as a convex column, and the other of the first guide portion and the second guide portion is formed as an arc groove, and the convex column cooperates with the arc groove to adjust the angle between the baffle and the fixing member.

[0009] In some embodiments, a first limiting portion is formed on a side wall in the width direction of the installation space, and a second limiting portion is formed on the baffle plate. The baffle plate and the fixing member cooperate with the first limiting portion and the second limiting portion to limit the angle of the baffle plate in the installation space.

[0010] In some embodiments, one of the first limiting portion and the second limiting portion is formed as a boss, and the other of the first limiting portion and the second limiting portion is formed as a rib extending in the length direction of the baffle, and the boss cooperates with the rib to limit the angle between the baffle and the fixing member.

[0011] In some embodiments, the convex rib comprises a plurality of convex ribs, and the plurality of convex ribs are arranged at intervals in the thickness direction of the baffle.

[0012] In some embodiments, first positioning portions are formed on both end side walls in the length direction of the installation space, and second positioning portions are formed on both ends of the baffle in the length direction. The baffle and the fixing member cooperate with the first positioning portion and the second positioning portion to fix the angle of the baffle in the installation space.

[0013] In some embodiments, one of the first positioning portion and the second positioning portion is formed as a protrusion, and the other of the first positioning portion and the second positioning portion is formed as a groove, and the protrusion cooperates with the groove to fix the angle between the baffle and the fixing member.

[0014] In some embodiments, a through hole penetrating the fixing member in a thickness direction of the fixing member is formed on the bottom wall of the fixing member, and the through holes include a plurality of through holes arranged in an array.

[0015] The battery cell according to the second aspect of the utility model comprises: a shell having a receiving cavity formed therein; a battery cell disposed in the receiving cavity; and an end plate assembly according to the first aspect of the utility model, the end plate assembly being disposed adjacent to the battery cell, and the pole ear being located in the installation space of the end plate assembly.

[0016] According to the battery cell of the utility model, by providing the end plate assembly of the first aspect, the overall performance of the battery cell is improved, the failure rate of the battery cell is reduced, and the safety performance of the battery cell is improved.

[0017] The power device according to the third aspect of the utility model comprises at least one battery cell according to the second aspect of the utility model.

[0018] According to the power device of the utility model, by providing the battery monomer of the second aspect, the overall performance and energy density of the power device are improved, and the safety of the power device is enhanced.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of an end plate assembly according to an embodiment of the utility model;

[0021] Figure 2 yes Figure 1 A schematic diagram of the fixing member shown in ;

[0022] Figure 3 yes Figure 1 Schematic diagram of the baffle shown in .

[0023] Reference numerals:

[0024] 100, end plate assembly;

[0025] 1. fixing member; 11. boss; 12. boss; 13. groove; 14. through hole;

[0026] 2. baffle; 21. arc groove; 22. convex rib; 23. protrusion. DETAILED DESCRIPTION

[0027] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0028] Reference below Figure 1-Figure 3 The end plate assembly 100 according to the first embodiment of the present invention is described.

[0029] like Figure 1-Figure 3 As shown, the end plate assembly 100 according to the first embodiment of the utility model includes: a fixing member 1 and a baffle 2.

[0030] Specifically, an installation space is formed on the fixing member 1, and first guide portions are formed on the side walls at both ends of the installation space in the length direction. The baffle 2 is arranged in the installation space, and second guide portions are formed on both ends of the baffle 2 in the length direction. The baffle 2 and the fixing member 1 cooperate with each other through the first guide portion and the second guide portion to adjust the angle of the baffle 2 in the installation space. Therefore, the end plate assembly 100 has a simple structure, an ingenious design, and is easy to assemble.

[0031] According to the end plate assembly 100 of the embodiment of the utility model, by setting the baffle 2 and the fixing part 1 as two parts, when the baffle 2 or the fixing part 1 is damaged, only the damaged part needs to be replaced without scrapping the entire part, thereby reducing the production and maintenance costs of the battery cell. The multi-angle adjustment of the baffle 2 realizes isolation protection of the bending of the pole ear under different conditions.

[0032] In some embodiments of the present invention, one of the first guide portion and the second guide portion is formed as a convex column 11, and the other of the first guide portion and the second guide portion is formed as an arc groove 21, and the convex column 11 cooperates with the arc groove 21 to adjust the angle between the baffle 2 and the fixing member 1. In other words, the first guide portion may be formed as a convex column 11, and the second guide portion may be formed as an arc groove 21; or the first guide portion may be formed as an arc groove 21, and the second guide portion may be formed as a convex column 11. Figure 1-Figure 3 As shown, the first guide portion is formed as a convex column 11, and the second guide portion is formed as an arc groove 21. Thus, the design of the first guide portion and the second guide portion is ingenious, and the convex column 11 cooperates with the arc groove 21 to achieve the angle adjustment of the baffle 2, playing a role in guiding the rotation.

[0033] In some embodiments of the present invention, a first limiting portion is formed on one side wall in the width direction of the installation space, a second limiting portion is formed on the baffle plate 2, and the baffle plate 2 and the fixing member 1 cooperate with each other through the first limiting portion and the second limiting portion to limit the angle of the baffle plate 2 in the installation space. Therefore, the end plate assembly 100 has a simple structure, a clever design, and is easy to assemble.

[0034] In some embodiments of the present invention, one of the first limiting portion and the second limiting portion is formed as a boss 12, and the other of the first limiting portion and the second limiting portion is formed as a rib 22 extending in the length direction of the baffle 2, and the boss 12 cooperates with the rib 22 to limit the angle between the baffle 2 and the fixing member 1. In other words, the first limiting portion may be formed as the boss 12, and the second limiting portion may be formed as the rib 22; or the first limiting portion may be formed as the rib 22, and the second limiting portion may be formed as the boss 12. Figure 1-Figure 3 As shown, the first limiting portion is formed as a boss 12, and the second limiting portion is formed as a rib 22. Thus, the first limiting portion and the second limiting portion are cleverly designed, and the boss 12 cooperates with the rib 22 to achieve angle adjustment of the baffle 2, simplifying the structure of the end plate assembly 100.

[0035] Further, as shown in the figure, the convex rib 22 includes a plurality of convex ribs 22, and the plurality of convex ribs 22 are arranged at intervals in the thickness direction of the baffle 2. Thus, multi-angle adjustment of the angle between the baffle 2 and the fixing member 1 is achieved, and the structure is stable and reliable.

[0036] In some implementations of the utility model, first positioning parts are formed on both end sidewalls in the length direction of the installation space, and second positioning parts are formed on both ends of the baffle plate 2 in the length direction, and the baffle plate 2 and the fixing member 1 cooperate with each other through the first positioning parts and the second positioning parts to fix the angle of the baffle plate 2 in the installation space. Therefore, the end plate assembly 100 has a simple structure, a clever design, and is easy to assemble.

[0037] In some embodiments of the present invention, one of the first positioning portion and the second positioning portion is formed as a protrusion 23, and the other of the first positioning portion and the second positioning portion is formed as a groove 13, and the protrusion 23 and the groove 13 cooperate to fix the angle between the baffle 2 and the fixing member 1. In other words, the first positioning portion may be formed as a groove 13, and the second positioning portion may be formed as a protrusion 23; or the first positioning portion may be formed as a protrusion 23, and the second positioning portion may be formed as a groove 13. Figure 1-Figure 3 As shown, the first positioning portion is formed as a groove 13, and the second positioning portion is formed as a protrusion 23. Therefore, the first positioning portion and the second positioning portion are cleverly designed, and the groove 13 cooperates with the protrusion 23 to achieve angle adjustment of the baffle 2, simplifying the structure of the end plate assembly 100.

[0038] In some implementations of the present invention, Figure 2 As shown, a through hole 14 is formed on the bottom wall of the fixing member 1 and penetrates the fixing member 1 in the thickness direction of the fixing member 1. The through holes 14 include a plurality of through holes 14 arranged in an array. Thus, the through holes 14 are provided so that the gas in the battery cell can flow out of the battery cell, thereby ensuring the safety performance of the battery cell and reducing the failure rate of the battery cell.

[0039] Furthermore, in some embodiments, the fixing member 1 and the baffle plate 2 may be made of the same material, and in other embodiments, the fixing member 1 and the baffle plate 2 may be made of different materials.

[0040] The battery cell according to the second embodiment of the utility model comprises: a housing, a battery cell and an end plate assembly 100 according to the first embodiment of the utility model. Specifically, a receiving cavity is formed in the housing, the battery cell is arranged in the receiving cavity, the battery cell has a tab, the end plate assembly 100 is arranged adjacent to the battery cell, and the tab is located in the installation space of the end plate assembly 100.

[0041] According to the battery cell of the embodiment of the utility model, by providing the end plate assembly 100 of the first embodiment, the overall performance of the battery cell is improved, the failure rate of the battery cell is reduced, and the safety performance of the battery cell is improved.

[0042] The power device according to the embodiment of the third aspect of the utility model comprises at least one battery cell according to the embodiment of the second aspect of the utility model.

[0043] According to the power device of the embodiment of the utility model, the battery cell of the above-mentioned second aspect embodiment is provided, thereby improving the overall performance and energy density of the power device and enhancing the safety of the power device.

[0044] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0045] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0046] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0048] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

[0049] The specific meaning of .

[0050] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0051] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An end plate assembly, characterized in that: include: A fixing member, wherein an installation space is formed on the fixing member, and first guide portions are formed on side walls at both ends of the installation space in the length direction; The baffle is arranged in the installation space, and second guide parts are formed at both ends of the baffle in the length direction. The baffle and the fixing member cooperate with each other through the first guide part and the second guide part to adjust the angle of the baffle in the installation space.

2. The end plate assembly according to claim 1, characterized in that: One of the first guide portion and the second guide portion is formed as a convex column, and the other of the first guide portion and the second guide portion is formed as an arc groove, and the convex column cooperates with the arc groove to adjust the angle between the baffle and the fixing member.

3. The end plate assembly according to claim 1, characterized in that: A first limiting portion is formed on a side wall on one side in the width direction of the installation space, and a second limiting portion is formed on the baffle plate. The baffle plate and the fixing member cooperate with each other through the first limiting portion and the second limiting portion to limit the angle of the baffle plate in the installation space.

4. The end plate assembly according to claim 3, characterized in that: One of the first limiting portion and the second limiting portion is formed as a boss, and the other of the first limiting portion and the second limiting portion is formed as a rib extending in the length direction of the baffle, and the boss cooperates with the rib to limit the angle between the baffle and the fixing member.

5. The end plate assembly according to claim 4, characterized in that: The convex ribs include a plurality of convex ribs, and the plurality of convex ribs are arranged at intervals in the thickness direction of the baffle.

6. The end plate assembly according to claim 1, characterized in that: The side walls at both ends of the installation space in the length direction are formed with first positioning parts, and the two ends of the baffle in the length direction are formed with second positioning parts. The baffle and the fixing member cooperate with each other through the first positioning part and the second positioning part to fix the angle of the baffle in the installation space.

7. The end plate assembly according to claim 6, characterized in that: One of the first positioning portion and the second positioning portion is formed as a protrusion, and the other of the first positioning portion and the second positioning portion is formed as a groove, and the protrusion cooperates with the groove to fix the angle between the baffle and the fixing member.

8. The end plate assembly according to any one of claims 1 to 7, characterized in that: A through hole penetrating the fixing member in the thickness direction of the fixing member is formed on the bottom wall of the fixing member, and the through holes include a plurality of through holes arranged in an array.

9. A battery cell, characterized in that: include: A housing having a receiving cavity formed therein; A battery cell, the battery cell is arranged in the accommodating cavity, and the battery cell has a tab; The end plate assembly according to any one of claims 1 to 8, wherein the end plate assembly is arranged adjacent to the battery cell, and the electrode tab is located in the installation space of the end plate assembly.

10. A power device, characterized in that: Comprising at least one battery cell as claimed in claim 9.

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