Cover plate assembly and battery

Abstract

The utility model relates to the field of battery structures, in particular to a cover plate assembly and a battery. The cover plate assembly comprises a cover plate body and a pole; the pole comprises a pole body and an extension plate, and the pole body is mounted on the cover plate body; the extension plate is positioned on one side, facing a pole group, of the pole column body, and is integrally formed with the pole column body; the extension direction of the plate surface of the extension plate is the same as the leading-out direction of the tab, and the plate surface of the extension plate is connected with the tab in an attached manner. According to the cover plate assembly provided by the invention, the plate surface of the extension plate is arranged to be the same as the lead-out direction of the tab, so that when the pole mounted at the through hole is connected with the tab, the surface of the tab can be in attached connection with the plate surface of the extension plate without bending the tab led out from the end part of the pole group, straight welding of the tab and the pole is realized, and the assembly difficulty is lower; and the length of the tab is relatively shorter, so that the problems of wrinkling and tearing are not easy to occur, and more space is saved.

Description

Technical Field

[0001] The present application relates to the field of battery structures, and in particular to a cover plate assembly and a battery. Background Art

[0002] In the prior art, the battery cover is provided with a pole, and the pole is welded to the pole lug through a connecting piece. The connecting piece, as a connecting piece, needs to be bent and connected to the pole and the pole lug respectively, which has many parts and processes, resulting in increased costs. Utility Model Content

[0003] The purpose of the present application is to provide a cover plate assembly and a battery, which can achieve the connection between the pole ear and the plate surface of the extension plate without bending, realize direct welding between the pole ear and the pole, and reduce the difficulty of assembly.

[0004] The present application provides a cover plate assembly, comprising a cover plate body and a pole;

[0005] The pole comprises a pole body and an extension plate, and the pole body is mounted on the cover plate body;

[0006] The extension plate is located on a side of the pole body facing the pole group and is integrally formed with the pole body;

[0007] The extension direction of the plate surface of the extension plate is the same as the lead-out direction of the pole lug, and the plate surface of the extension plate is fitted and connected to the pole lug.

[0008] In the above technical solution, further, the extension plate is perpendicular to a surface of the pole body on one side facing the pole group.

[0009] In the above technical solution, further, the pole body includes a column and a bottom plate, and the bottom plate is integrally connected with the column on one side facing the pole group;

[0010] The extension plate is connected to the bottom plate to form an L-shaped structure; the inner side of the extension plate is connected to the pole ear.

[0011] In the above technical solution, further, a first isolating member is provided on a side of the bottom plate facing the electrode group to isolate the electrode lug from the bottom plate.

[0012] In the above technical solution, further, the first isolating member is connected to the lower plastic member of the cover plate body, and the first isolating member can be flipped relative to the lower plastic member to cover or expose the bottom plate.

[0013] In the above technical solution, further, the first isolating member and the lower plastic member are integrally formed, and a thinning structure is provided at the connection between the first isolating member and the lower plastic member.

[0014] In the above technical solution, further, a second isolation piece is provided on a side of the extension plate close to the battery housing to isolate the extension plate from the battery housing.

[0015] In the above technical solution, further, the second isolation member is integrally formed with the lower plastic member of the cover body.

[0016] In the above technical solution, further, the lower plastic part includes a lower plastic part body and a mounting block, and the mounting block is connected to a side of the lower plastic part body facing the pole group;

[0017] The second isolating member is connected to a side of the lower plastic member body facing the pole group, and a protruding height of the second isolating member is less than or equal to a protruding height of the mounting block.

[0018] The present application also provides a battery, comprising the cover plate assembly described in the above solution.

[0019] Compared with the prior art, the beneficial effects of this application are:

[0020] The cover plate assembly provided in the present application includes a cover plate body and a pole. The pole includes a pole body and an extension plate, and the pole body is installed on the cover plate body. An extension plate is provided on the side of the pole body facing the pole group, and the extension plate and the pole body are integrally formed. Since the plate surface of the extension plate is in the same lead-out direction as the pole ear, when the pole installed at the through hole is connected to the pole ear, the pole ear led out from the end of the pole group does not need to be bent, so that the surface of the pole ear can be fitted and connected with the plate surface of the extension plate, so that the pole ear and the pole are directly welded, and the assembly difficulty is lower; and the length of the pole ear is relatively shorter, and it is not easy to have wrinkles and tears, which saves more space.

[0021] The present application also provides a battery, including the cover plate assembly described in the above solution. Based on the above analysis, it can be seen that the battery also has the above beneficial effects, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 A first structural schematic diagram of the cover plate assembly provided in this application;

[0024] Figure 2 A second structural schematic diagram of the cover plate assembly provided in this application;

[0025] Figure 3 A schematic structural diagram of a first isolation member provided in the present application;

[0026] Figure 4 This is a third structural schematic diagram of the cover assembly provided in this application.

[0027] In the figure: 101-cover plate assembly; 102-pole; 103-pole body; 104-extension plate; 105-cover plate body; 106-lower plastic part; 107-upper plastic part; 108-column; 109-bottom plate; 110-connecting member; 111-first isolating member; 112-thinning structure; 113-second isolating member; 114-lower plastic part body; 115-mounting block. DETAILED DESCRIPTION

[0028] The technical solution of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0029] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0030] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0031] Embodiment 1

[0032] See also Figures 1 to 4As shown, the cover plate assembly 101 provided in the present application includes a cover plate body 105 and a pole 102. The pole 102 includes a pole body 103 and an extension plate 104, and the pole body 103 is installed on the cover plate body 105. Specifically, the cover plate body 105 includes a plain aluminum sheet, a lower plastic part 106, and an upper plastic part 107. The plain aluminum sheet, the lower plastic part 106, and the upper plastic part 107 are correspondingly provided with through holes, and the pole body 103 can pass through the above-mentioned through holes, so that the pole body 103 can be installed and fixed with the plain aluminum sheet, the lower plastic part 106, and the upper plastic part 107.

[0033] An extension plate 104 is provided on one side of the pole body 103 facing the pole group, and the extension plate 104 is integrally formed with the pole body 103. Since the extension direction of the plate surface of the extension plate 104 is the same as the lead-out direction of the pole lug, when the pole 102 installed at the through hole is connected to the pole lug, the pole lug led out from the end of the pole group does not need to be bent, so that the surface of the pole lug can be fitted and connected with the plate surface of the extension plate 104, so that the pole lug and the pole 102 are directly welded, and the assembly difficulty is lower; and the length of the pole lug is relatively shorter, and it is not easy to have wrinkles and tears, which saves more space.

[0034] In an optional solution of this embodiment, the extension plate 104 is perpendicular to the surface of the pole body 103 facing the pole group. The specific position of the extension plate 104 on the surface of the pole body 103 facing the pole group can be set according to the position of the pole ear lead-out.

[0035] Optionally, the pole body 103 includes a column 108 and a bottom plate 109, and the bottom plate 109 is connected to the side of the column 108 facing the pole group. The side of the column 108 away from the bottom plate 109 extends out of the outside of the cover body 105 and is locked by a connector 110. The extension plate 104 is integrally connected to the bottom plate 109 to form an L-shaped structure. The L-shaped structure and the column 108 can be processed separately and then connected, which can effectively reduce the processing cost, and it is more convenient to adjust the product, and it can be made into a platform product. The pole ear is connected to the inner side of the extension plate 104. Figure 3 As shown, the extension plate 104 is located on one side of the bottom plate 109 in the width direction, and the extension plate 104 and the bottom plate 109 are integrally formed into an L-shaped structure. The outer side of the extension plate 104 is close to the battery shell, and the pole ear is connected to the inner side of the extension plate 104 to prevent the pole ear from being conductive to the battery shell.

[0036] On the other hand, the lower plastic part 106 is located between the bottom plate 109 and the bare aluminum sheet, and the pole ear is welded to the extension plate 104, which has less impact on the sealing ring of the lower plastic part 106 and the pole 102. The bottom plate 109 of the pole 102 can adopt a thinner structure, thereby achieving design cost reduction.

[0037] In an optional solution of this embodiment, a first isolation member 111 is provided on a side of the bottom plate 109 facing the electrode group to isolate the electrode ear from the bottom plate 109 .

[0038] In this embodiment, since the tab is connected to the inner side of the extension plate 104, the end of the tab faces the bottom plate 109 of the pole body 103. When the tab is connected to the pole 102, the end of the tab is easy to touch the bottom plate 109 and cause a local virtual short circuit, thereby affecting the battery performance. In order to avoid the above problems, the present application sets a first isolation member 111 between the end of the tab and the bottom plate 109 to prevent the tab from overlapping the bottom plate 109, so that the conductive path there passes through the extension plate 104, the bottom plate 109 and finally the column 108 in sequence.

[0039] In an optional solution of this embodiment, the first isolation member 111 is connected to the lower plastic member 106 of the cover body 105 , and the first isolation member 111 can be flipped relative to the lower plastic member 106 to cover or expose the bottom plate 109 .

[0040] Preferably, the first isolating member 111 is integrally formed with the lower plastic member 106 of the cover body 105 , and a thinning structure 112 is provided at the connection between the first isolating member 111 and the lower plastic member 106 so that the first isolating member 111 can be flipped relative to the lower plastic member 106 to cover or expose the bottom plate 109 .

[0041] In this embodiment, if Figure 3 As shown, the extension plate 104 is located on one side of the bottom plate 109 in the width direction, and the first isolating piece 111 is hinged to the lower plastic part 106 on the other side of the bottom plate 109 in the width direction. Specifically, when the pole 102 is installed, the first isolating piece 111 is flipped open to facilitate the installation of the pole 102; after the pole 102 is installed in the through hole of the lower plastic part 106 and the pole ear is welded to the extension plate 104, the first isolating piece 111 can be covered on the bottom plate 109 to achieve the insulation protection function, which is more convenient to operate. The first isolating piece 111 and the lower plastic part 106 of the cover body 105 are integrally formed, with a stable structure and simple process, and the integrated structure of the two makes the first isolating piece 111 not easy to lose.

[0042] Embodiment 2

[0043] The cover plate assembly 101 in the second embodiment is an improvement on the above embodiment, and the technical contents disclosed in the above embodiment will not be described repeatedly, and the contents disclosed in the above embodiment also belong to the contents disclosed in the second embodiment.

[0044] In an optional solution of this embodiment, a second isolating member 113 is provided on the side of the extension plate 104 close to the battery housing to isolate the extension plate 104 from the battery housing. When installing the pole 102, if the extension plate 104 touches the battery housing, a local virtual short circuit will be caused, thereby affecting the battery performance. The second isolating member 113 can prevent the extension plate 104 from overlapping the battery housing, thereby achieving insulation between the extension plate 104 and the battery housing.

[0045] Preferably, the second isolation member 113 and the lower plastic member 106 of the cover body 105 are integrally formed, which has a stable structure and a simple process, and the integrated structure of the two makes it difficult for the second isolation member 113 to be lost.

[0046] In an optional solution of this embodiment, the lower plastic part 106 includes a lower plastic part body 114 and a mounting block 115, and the mounting block 115 is connected to the side of the lower plastic part body 114 facing the pole group; the second isolation member 113 is connected to the side of the lower plastic part body 114 facing the pole group, and the protruding height of the second isolation member 113 is less than or equal to the protruding height of the mounting block 115.

[0047] In this embodiment, if Figure 4 As shown, both ends of the lower plastic body 114 facing the electrode group are provided with mounting blocks 115, and the mounting blocks 115 are fitted with the end faces of the electrode group to form a mounting space between the lower plastic body 114 and the end faces of the electrode group. 1 Less than or equal to the protruding height H of the mounting block 115 2 , so as to prevent the second isolation member 113 from partially lifting up the lower plastic body 114 and affecting the flatness of the cover assembly 101 .

[0048] Embodiment 3

[0049] Embodiment 3 of the present application provides a battery, including the cover assembly 101 of any of the above embodiments, and thus has all the beneficial technical effects of the cover assembly 101 of any of the above embodiments, which will not be elaborated here.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application is described in detail with reference to the above embodiments, a person skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application. In addition, a person skilled in the art can understand that although some embodiments herein include certain features included in other embodiments but not other features, the combination of features of different embodiments means being within the scope of the present application and forming different embodiments.

Claims

1. A cover plate assembly, characterized in that: It includes a cover plate body and a pole; The pole comprises a pole body and an extension plate, and the pole body is mounted on the cover plate body; The extension plate is located on a side of the pole body facing the pole group and is integrally formed with the pole body; The extension direction of the plate surface of the extension plate is the same as the lead-out direction of the pole lug, and the plate surface of the extension plate is fitted and connected to the pole lug.

2. The cover plate assembly according to claim 1, characterized in that: The extension plate is perpendicular to a surface of the pole body on one side facing the pole group.

3. The cover plate assembly according to claim 2, characterized in that: The pole body comprises a column and a bottom plate, wherein the bottom plate is connected to a side of the column facing the pole group; The extension plate is integrally connected to the bottom plate to form an L-shaped structure; The inner side of the extension plate is connected to the pole lug.

4. The cover plate assembly according to claim 3, characterized in that: A first isolating member is disposed on a side of the bottom plate facing the electrode group to isolate the electrode lug from the bottom plate.

5. The cover plate assembly according to claim 4, characterized in that: The first isolating member is connected to the lower plastic member of the cover plate body, and the first isolating member can be turned over relative to the lower plastic member to cover or expose the bottom plate.

6. The cover plate assembly according to claim 5, characterized in that: The first isolating member and the lower plastic member are integrally formed, and a thinning structure is provided at a connection between the first isolating member and the lower plastic member.

7. The cover plate assembly according to claim 2, characterized in that: A second isolating member is disposed on one side of the extension plate close to the battery housing to isolate the extension plate from the battery housing.

8. The cover plate assembly according to claim 7, characterized in that: The second isolating member is integrally formed with the lower plastic member of the cover body.

9. The cover plate assembly according to claim 8, characterized in that: The lower plastic part comprises a lower plastic part body and a mounting block, wherein the mounting block is connected to a side of the lower plastic part body facing the pole group; The second isolating member is connected to a side of the lower plastic member body facing the pole group, and a protruding height of the second isolating member is less than or equal to a protruding height of the mounting block.

10. A battery, characterized in that: The invention comprises the cover plate assembly according to any one of claims 1 to 9.

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