Battery cover plate assembly and battery with same

Abstract

The battery cover plate assembly comprises a cover plate, an end plate and a baffle plate, a pole is mounted on the cover plate, the end plate is positioned on one side, facing an electrode assembly, of the cover plate, a through groove penetrating through the thickness of the end plate is formed in the end plate, and the through groove is used for accommodating a folded tab at the end part of the electrode assembly; the pole lug is electrically connected with the pole column, the through groove is provided with a first side wall and a second side wall which are opposite to each other, the baffle plate is detachably mounted on the first side wall, and an avoiding opening allowing the pole lug to pass through is defined between the baffle plate and the second side wall. According to the battery cover plate assembly disclosed by the utility model, the end plate and the baffle plate are designed and manufactured in a split manner, so that the structures of the end plate and the baffle plate can be simplified, the production difficulty of the end plate and the baffle plate can be reduced, and the loss caused by defective products can be reduced, thereby reducing the production cost.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic batteries, in particular to a battery cover assembly and a battery having the same. Background Art

[0002] The end plate is an important structure of the blade battery. Its outer part is used to hot-melt with the bare cell insulating sheet to form a wrap around the electrode group to achieve the insulation effect between the electrode group and the shell. The internal baffle part supports and protects the bending of the cell tabs to prevent the tabs from being stretched and damaged, and from piercing the bare cell insulating sheet after being torn, causing a short circuit in the cell.

[0003] Currently, the end plates are injection molded parts. During the assembly of the battery cells, the end plate baffles are not compatible with the bending protection of the pole lugs. When the length and thickness of the pole lugs change, the structure of the end plates cannot be changed. Secondly, if the end plates are damaged by bumps and have edge burrs during the production process, the entire end plate needs to be scrapped, and the product recycling rate is low. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a battery cover assembly, which can simplify the structure of the end plate and the baffle plate, reduce the difficulty of producing the end plate and the baffle plate, and reduce the loss caused by defective products, thereby reducing production costs.

[0005] According to an embodiment of the utility model, the battery cover plate assembly includes: a cover plate, on which a pole is installed; an end plate, the end plate is located on the side of the cover plate facing the electrode assembly, and a through groove is provided on the end plate that runs through the thickness of the end plate, the through groove is used to accommodate the pole ear folded at the end of the electrode assembly, the pole ear is electrically connected to the pole, and the through groove has a first side wall and a second side wall opposite to each other; a baffle, the baffle is detachably mounted on the first side wall, and an avoidance opening is defined between the baffle and the second side wall to allow the pole ear to pass through.

[0006] According to the battery cover plate assembly of the embodiment of the utility model, by designing and manufacturing the end plate and the baffle separately, the structure of the end plate and the baffle can be simplified, the difficulty of producing the end plate and the baffle can be reduced, and the loss caused by defective products can be reduced, thereby reducing production costs.

[0007] The battery cover assembly according to the utility model also has the following additional technical features:

[0008] In some embodiments of the present invention, the baffle is provided with a first matching portion, the first side wall is provided with a second matching portion, and the first matching portion and the second matching portion are detachably connected.

[0009] In some embodiments of the present invention, the first matching portion includes a hook, and the second matching portion includes a slot that is engaged with the hook.

[0010] In some embodiments of the present invention, the card slot has a bent slot channel in the first side wall, and the card hook is detachably engaged in the slot channel.

[0011] In some embodiments of the present utility model, the slot includes a first slot body, a connecting slot and a second slot body, the connecting slot is connected between the first slot body and the second slot body, the first slot body and the second slot body both extend along the thickness direction of the first side wall, the first slot body has a first slot on the inner wall surface of the first side wall, and the second slot body has a second slot on the inner wall surface of the first side wall; the hook includes a connecting arm and a hook head, the baffle includes a first plate body, part of the first plate body is fitted in the first slot body, the edge of the first plate body is connected to a connecting arm, the connecting arm is fitted in the connecting slot, the hook is connected to the end of the connecting arm, and the hook is fitted in the second slot body.

[0012] In some embodiments of the present invention, the slot is adjacent to a side of the first side wall facing the electrode assembly.

[0013] In some embodiments of the present invention, the hook is provided with a first guide portion that cooperates with the guide of the slot, and / or the slot is provided with a second guide portion that cooperates with the guide of the hook.

[0014] In some embodiments of the present invention, the baffle includes a first plate body and a second plate body, one side of the first plate body is connected to the second plate body, and the other side of the first plate body is provided with the first matching portion, wherein the first plate body and the second plate body are arranged at an angle.

[0015] In some embodiments of the present invention, the first plate is perpendicular to the first side wall.

[0016] The utility model also provides a battery having the battery cover assembly of the above embodiment.

[0017] According to the battery of the embodiment of the utility model, by providing the battery cover assembly of the above embodiment, the structure of the battery cover assembly can be simplified, the production cost of the battery cover assembly can be reduced, and the production difficulty and production cost of the battery can be reduced.

[0018] 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

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 It is a structural schematic diagram of an angle of cooperation between the end plate and the baffle according to an embodiment of the utility model.

[0021] Figure 2 It is a structural schematic diagram of another angle of cooperation between the end plate and the baffle according to an embodiment of the utility model.

[0022] Figure 3 It is a structural schematic diagram of an end plate according to an embodiment of the utility model.

[0023] Figure 4 It is a structural schematic diagram of a baffle according to an embodiment of the utility model.

[0024] Figure 5 It is a cross-sectional view of the cooperation between the end plate and the baffle according to an embodiment of the utility model.

[0025] Figure 6 yes Figure 5 Magnified view of area A.

[0026] Reference numerals:

[0027] End plate 10,

[0028] Through slot 1, first side wall 2, card slot 21, first slot body 211, connecting slot 212, second slot body 213, first notch 214, second notch 215, second side wall 3,

[0029] The baffle 20 , the hook 4 , the connecting arm 41 , the hook head 42 , the first guide portion 421 , the first plate body 51 , the second plate body 52 , and the avoidance opening 30 . DETAILED DESCRIPTION

[0030] 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 only used to explain the present invention, and cannot be understood as limiting the present invention.

[0031] In the description of the present utility model, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. 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 "multiple" is two or more, unless otherwise clearly and specifically defined.

[0032] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 or an electrical connection; 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 utility model can be understood according to specific circumstances.

[0033] Reference below Figure 1-Figure 6 A battery cover assembly according to an embodiment of the utility model is described.

[0034] like Figure 1 and Figure 2 As shown, the battery cover plate assembly according to the embodiment of the utility model includes a cover plate, an end plate 10 and a baffle 20, a pole is installed on the cover plate, the pole ear of the electrode assembly can be electrically connected to the pole, and the end plate 10 is located on the side of the cover plate facing the battery cell, and the end plate 10 can provide support for the cover plate.

[0035] Further, refer to Figure 3 As shown, the end plate 10 is provided with a through groove 1 which penetrates the thickness of the end plate 10, and the through groove 1 is used to accommodate the folded pole ear at the end of the electrode assembly, that is, the pole ear can be folded in the through groove 1, which can prevent the redundant pole ear from interfering with the electrode assembly and reduce the space occupied by the pole ear inside the battery casing.

[0036] In addition, it can be understood that by providing the through groove 1 on the end plate 10, the structure of the end plate 10 can be simplified and the difficulty of producing the end plate 10 can be reduced. For example, the end plate 10 can be integrally formed by injection molding.

[0037] Furthermore, if Figure 1-Figure 3As shown, the through slot 1 has a first side wall 2 and a second side wall 3 opposite to each other, and a baffle 20 is installed on the first side wall 2. An avoidance opening 30 for allowing the pole ear to pass through is defined between the baffle 20 and the second side wall 3. That is to say, the baffle 20 can better allow the pole ear to be folded in the through slot 1. In other words, the baffle 20 can construct a bent channel in the through slot 1, so that the pole ear can be better folded and accommodated in the through slot 1, and the folded pole ear in the through slot 1 can pass through the end plate 10 through the avoidance opening 30, and then the pole ear can be electrically connected to the pole.

[0038] In addition, the present application enables the end plate 10 and the baffle plate 20 to be designed separately and then assembled, which can simplify the structure of the end plate 10 and the baffle plate 20 and reduce the difficulty of producing the end plate 10 and the baffle plate 20. In addition, during production operations, defective products will inevitably be produced. Therefore, when a defective end plate 10 or baffle plate 20 appears, the defective end plate 10 or baffle plate 20 can be removed. In this way, compared with the related art in which the end plate 10 and the baffle plate 20 are constructed as one body, the present application enables the end plate 10 and the baffle plate 20 to be designed and manufactured separately, which can reduce the losses caused by defective products and thus reduce production costs.

[0039] Therefore, according to the battery cover assembly of the embodiment of the utility model, by designing and manufacturing the end plate 10 and the baffle 20 separately, the structure of the end plate 10 and the baffle 20 can be simplified, the production difficulty of the end plate 10 and the baffle 20 can be reduced, and the losses caused by defective products can be reduced, thereby reducing production costs.

[0040] In some embodiments of the utility model, the baffle 20 is provided with a first matching portion, and the first side wall 2 is provided with a second matching portion, and the first matching portion and the second matching portion are detachably connected. That is, the baffle 20 and the end plate 10 can be detachably connected through the cooperation of the first matching portion and the second matching portion, that is, after the baffle 20 is installed on the end plate 10, the baffle 20 can also be removed from the end plate 10. For example, after the baffle 20 or the end plate 10 is assembled or adapted to the battery, the baffle 20 or the end plate 10 is damaged, and the baffle 20 and the end plate 10 can be disassembled, and then the baffle 20 or the end plate 10 can be replaced, thereby avoiding the scrapping of both the baffle 20 and the end plate 10, thereby reducing losses and thus reducing maintenance costs.

[0041] For example, Figure 1-Figure 6 As shown, the first matching portion includes a hook 4, and the second matching portion includes a slot 21 engaged with the hook 4, thereby achieving a simple structure and convenient assembly and disassembly.

[0042] Optionally, a plurality of the hooks 4 and the slots 21 may be provided, and the plurality of hooks 4 and the plurality of slots 21 correspond one to one.

[0043] refer to Figure 1-Figure 6In the example shown, two hooks 4 are provided, and two slots 21 are correspondingly provided.

[0044] In some embodiments of the present invention, Figure 1-Figure 6 As shown, the slot 21 has a bent slot channel in the first side wall 2, and the hook 4 is detachably fitted in the slot channel. In other words, the hook 4 can be inserted into the slot 21 along the bent slot channel, thereby improving the connection strength between the hook 4 and the slot 21, so that the baffle 20 can be stably installed on the first side wall 2.

[0045] Exemplarily, after the baffle 20 is installed on the first side wall 2 through the cooperation of the slot 21 and the hook 4, the overall gravity of the baffle 20 is borne by the hook 4, that is, stress concentration is likely to occur at the hook 4, and by making the slot 21 have a bent groove channel, the contact area between the hook 4 and the slot 21 can be increased, thereby improving the connection strength between the hook 4 and the slot 21.

[0046] In a specific example of the present invention, Figure 1-Figure 6 As shown, the slot 21 includes a first slot body 211, a connecting slot 212 and a second slot body 213, the connecting slot 212 is connected between the first slot body 211 and the second slot body 213, the first slot body 211 and the second slot body 213 both extend along the thickness direction of the first side wall 2, the first slot body 211 has a first slot 214 on the inner wall surface of the first side wall 2, and the second slot body 213 has a second slot 215 on the inner wall surface of the first side wall 2; the hook 4 includes a connecting arm 41 and a hook head 42, the baffle 20 includes a first plate body 51, a part of the first plate body 51 is fitted in the first slot body 211, the edge of the first plate body 51 is connected to the connecting arm 41, the connecting arm 41 is fitted in the connecting slot 212, the hook 4 is connected to the end of the connecting arm 41, and the hook 4 is fitted in the second slot body 213.

[0047] like Figure 1-Figure 6 As shown, the card slot 21 has a "C"-shaped slot channel, the first plate body 51 is inserted into the first slot body 211, the connecting arm 41 is perpendicular to the first plate body 51, the hook 4 and the connecting arm 41 can enter the first slot body 211 from the first buckle of the first slot body 211, and then enter the connecting slot 212 along the first slot body 211, the hook 4 can also enter the second slot body 213 from the connecting slot 212, and be snapped into the second slot body 213, thereby, after the card slot 21 and the hook 4 are snapped together, the connection strength between the card slot 21 and the hook 4 can be improved.

[0048] Exemplarily, due to the above-mentioned structural design of the slot 21 and the hook 4, after the hook 4 enters from the first slot 214, the connecting arm 41 may bend to a certain extent. Therefore, it is also necessary to make the connecting arm 41 have a certain bending and deformation ability. At the same time, it is also necessary to provide some deformation space for the deformation structure of the connecting arm 41 in the slot channel of the slot 21. Therefore, there is also deformation space in the slot channel to meet the deformation needs of the connecting arm 41.

[0049] In some embodiments of the present invention, the slot 21 is adjacent to a side of the first side wall 2 facing the electrode assembly. Figure 1-Figure 6 As shown, the slot 21 is arranged near the lower side of the first side wall 2, so that when the baffle 20 cooperates with the first side wall 2, the first baffle 20 can better limit the position of the pole ear, and the pole ear can extend along the baffle 20 and extend into the through groove 1 from the avoidance opening 30, and then be bent in a bending manner and accommodated in the through groove 1.

[0050] In some embodiments of the utility model, the hook 4 is provided with a first guide portion 421 that cooperates with the guide of the slot 21, and / or the slot 21 is provided with a second guide portion that cooperates with the guide of the hook 4. Exemplarily, the hook head 42 of the hook 4 is provided with a first guide slope, so that the hook 4 can easily enter the slot channel from the first notch 214. Exemplarily, the first notch 214 is provided with a second guide slope, so that the hook 4 can easily enter the slot channel from the first notch 214. Exemplarily, the hook head 42 of the hook 4 is provided with a first guide slope, and the first notch 214 is provided with a second guide slope, so that the hook 4 can easily enter the slot channel from the first notch 214.

[0051] For example, Figure 6 As shown, the first guide slope can be a chamfer on the hook head 42, and the chamfer can be a 45° chamfer or a 60° chamfer, which is not limited in the present application.

[0052] Exemplarily, the second guiding slope may be a chamfer at the first notch 214 , and the chamfer may be a 45° chamfer or a 60° chamfer, which is not limited in the present application.

[0053] In some embodiments of the present invention, Figure 1-Figure 6 As shown, the baffle 20 includes a first plate body 51 and a second plate body 52, one side of the first plate body 51 is connected to the second plate body 52, and the other side of the first plate body 51 is provided with a first matching portion, wherein the first plate body 51 and the second plate body 52 are arranged at an angle. Thus, the baffle 20 can not only better limit the position of the tab at the end of the electrode assembly, but also better guide and bend the tab.

[0054] For example, Figure 4 and Figure 5As shown, the first plate body 51 is perpendicular to the first side wall 2, and the angle between the second plate body 52 and the first plate body 51 is an obtuse angle.

[0055] In addition, it can be understood that the angle between the first plate body 51 and the second plate body 52 can be set according to actual needs. For example, the angle between the first plate body 51 and the second plate body 52 is 100°, 115°, 122°, 130°, 135°, 170°, etc., and this application does not impose any restrictions.

[0056] It should also be noted that during the assembly process of the battery cover assembly, since the length, width, etc. of the electrode lugs of the electrode assembly are not the same, baffles 20 with different angles, different lengths or different widths can be selected according to actual needs to meet the bending requirements of lugs of different lengths, widths and thicknesses, and to construct avoidance openings 30 of different sizes, so that the lugs can better pass through the avoidance openings 30.

[0057] Exemplarily, the first plate body 51 is perpendicular to the first side wall 2, so that the first plate body 51 can be better inserted into the first groove body 211, reducing the difficulty of installing the baffle 20. In addition, when the baffle 20 includes the first plate body 51 and the second plate body 52 with an angle design, the arrangement of the second plate body 52 in the through groove 1 can be better limited, thereby meeting different pole ear working conditions and having good flexibility.

[0058] The utility model also provides a battery having the battery cover assembly of the above embodiment.

[0059] According to the battery of the embodiment of the utility model, by providing the battery cover assembly of the above embodiment, the structure of the battery cover assembly can be simplified, the production cost of the battery cover assembly can be reduced, and the production difficulty and production cost of the battery can be reduced.

[0060] Other structures and operations of the battery and the battery cover assembly according to the embodiment of the utility model are known to ordinary technicians in the field and will not be described in detail here.

[0061] In the description of this specification, the description with reference to the terms "some embodiments", "optionally", "further" 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 representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0062] 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. A battery cover assembly, characterized in that: include: A cover plate, on which a pole is mounted; An end plate, the end plate is located on a side of the cover plate facing the electrode assembly, the end plate is provided with a through slot penetrating the thickness of the end plate, the through slot is used to accommodate a folded electrode ear at the end of the electrode assembly, the electrode ear is electrically connected to the electrode column, and the through slot has a first side wall and a second side wall opposite to each other; A baffle is detachably mounted on the first side wall, and a clearance opening is defined between the baffle and the second side wall for allowing the tab to pass through.

2. The battery cover assembly according to claim 1, characterized in that: The baffle is provided with a first matching portion, and the first side wall is provided with a second matching portion, and the first matching portion and the second matching portion are detachably connected.

3. The battery cover assembly according to claim 2, characterized in that: The first matching portion includes a hook, and the second matching portion includes a slot engaged with the hook.

4. The battery cover assembly according to claim 3, characterized in that: The card slot has a bent slot channel in the first side wall, and the card hook is detachably engaged in the slot channel.

5. The battery cover assembly according to claim 4, characterized in that: The card slot includes a first slot body, a connecting slot and a second slot body, the connecting slot is connected between the first slot body and the second slot body, the first slot body and the second slot body both extend along the thickness direction of the first side wall, the first slot body has a first slot opening on the inner wall surface of the first side wall, and the second slot body has a second slot opening on the inner wall surface of the first side wall; And / or, the hook includes a connecting arm and a hook head, the baffle includes a first plate body, part of the first plate body is fitted in the first slot body, the edge of the first plate body is connected to a connecting arm, the connecting arm is fitted in the connecting slot, the hook is connected to the end of the connecting arm, and the hook is fitted in the second slot body.

6. The battery cover assembly according to claim 3, characterized in that: The slot is adjacent to a side of the first side wall facing the electrode assembly.

7. The battery cover assembly according to claim 3, characterized in that: The hook is provided with a first guide portion that cooperates with the guide of the slot, and / or the slot is provided with a second guide portion that cooperates with the guide of the hook.

8. The battery cover assembly according to claim 2, characterized in that: The baffle includes a first plate body and a second plate body, one side of the first plate body is connected to the second plate body, the other side of the first plate body is provided with the first matching portion, wherein the first plate body and the second plate body are provided at an angle.

9. The battery cover assembly according to claim 8, characterized in that: The first plate body is perpendicular to the first side wall.

10. A battery, characterized in that: A battery cover assembly comprising any one of claims 1-9.

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