Battery cell cover plate assembly and battery cell

Abstract

The utility model provides a battery cell cover plate assembly and a battery cell, and relates to the technical field of new energy batteries, the battery cell cover plate assembly comprises a cover plate main body, a first pole, a second pole and a connecting bar, the first pole is arranged in the first mounting hole in a penetrating manner and extends out of the upper end of the connecting bar; the connecting bar is provided with a first connecting hole, and the second pole is provided with a first threaded hole. According to the cell cover plate assembly provided by the utility model, the first threaded hole is formed in the second pole column, the connecting row is connected with the first pole column, and the first connecting hole is formed in the connecting row, so that when adjacent cells are connected, the connecting row is moved to the upper end of the second pole column of another cell; a screw is inserted into the first connecting hole of the connecting bar and is in threaded connection with the first threaded hole, so that the connecting bar is connected with the adjacent second pole; according to the connection mode, the connection efficiency of the connection bar and the pole of the adjacent battery cell is improved, and positioning is easier.

Description

Technical Field

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

[0002] In current technology, the aluminum bar and the first pole are connected by laser welding during module assembly to achieve the effect of conduction;

[0003] However, laser welding of the aluminum busbar and the first pole is prone to welding through the first pole and is not easy to position, thus affecting its normal use. Utility Model Content

[0004] The utility model aims to provide a cell cover plate assembly and a cell, so as to alleviate the technical problems of difficulty in positioning and easy welding through of the first pole during the welding process of the aluminum bar and the first pole.

[0005] The utility model provides a battery cover assembly, comprising a cover body, a first pole, a second pole and a connecting row; the first pole and the second pole are both arranged on the cover body, a first mounting hole is arranged on the connecting row, the first pole is arranged in the first mounting hole and extends from the upper end of the connecting row;

[0006] A first connection hole is provided on the connection bar, and a first threaded hole is provided on the second pole.

[0007] In an optional implementation, the connecting bar is welded to the first pole.

[0008] In an optional embodiment, a second mounting hole is provided on the cover plate body, a first mounting groove is provided on the lower end surface of the cover plate body, and the second mounting hole is communicated with the first mounting groove;

[0009] The first pole includes a first pole body and a lower connecting plate, the first pole body is arranged on the lower connecting plate, the first pole body is penetrated in the second mounting hole, and the lower connecting plate is assembled in the first mounting groove.

[0010] In an optional embodiment, it further includes a lower plastic, and the lower plastic is arranged at the lower end of the cover body;

[0011] A limiting protrusion matching the first mounting groove is arranged on the upper end surface of the lower plastic, a limiting groove corresponding to the limiting protrusion is arranged on the lower end surface of the lower plastic, and a limiting hole is arranged on the limiting protrusion, and the limiting hole is communicated with the limiting groove;

[0012] The lower connecting plate is assembled in the limiting groove, and the first pole body is penetrated in the limiting hole.

[0013] In an optional embodiment, a sealing ring is sleeved on the first pole body, and the upper end surface of the sealing ring abuts against the lower end surface of the cover plate body.

[0014] In an optional embodiment, an insulating member is further included, wherein the insulating member includes an insulating sleeve and an insulating ring, and the insulating ring is disposed at the upper end of the insulating sleeve;

[0015] The insulating sleeve is arranged on the first pole body, and the insulating ring is arranged on the upper end surface of the cover plate body.

[0016] In an optional embodiment, the connection row includes a first connection portion and a second connection portion, and one end of the first connection portion is connected to one end of the second connection portion;

[0017] An assembly sleeve is provided on the first connecting portion, and the first mounting hole is communicated with the assembly sleeve; the assembly sleeve is sleeved on the first pole body, and the lower end of the assembly sleeve abuts against the sealing ring; the insulating sleeve is sleeved outside the assembly sleeve, and the insulating ring is located between the upper end surface and the first connecting portion.

[0018] In an optional embodiment, a transition portion is provided between the first connection portion and the second connection portion, the transition portion makes the second connection portion higher than the first connection portion, and the first connection hole is located on the second connection portion.

[0019] In an optional embodiment, the insulating member is made of PPS.

[0020] The utility model provides a first threaded hole on the second pole of the battery cover assembly, a connecting row is connected to the first pole, and a first connecting hole is provided on the connecting row. When adjacent battery cells are connected, the connecting row is moved to the upper end of the second pole of another battery cell, and a screw is inserted into the first connecting hole of the connecting row and screwed into the first threaded hole. In this way, the connecting row is connected to the adjacent second pole, that is, the series connection of multiple battery cells is realized. This connection method improves the connection efficiency of the connecting row and the pole of the adjacent battery cell, and positioning is easier.

[0021] The utility model provides a battery cell, comprising the battery cell cover plate assembly described in any one of the aforementioned implementation modes.

[0022] Compared with the prior art, the battery cell provided by the utility model has the battery cell cover plate assembly provided by the utility model, and thus has all the beneficial effects of the battery cell cover plate assembly provided by the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific implementation methods of the utility model 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 utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 A schematic diagram of the structure of a battery cover assembly provided in an embodiment of the utility model;

[0025] Figure 2 for Figure 1 A schematic structural diagram of the battery cell cover assembly from another angle shown;

[0026] Figure 3 for Figure 2 The AA cross-sectional structural diagram of the structural diagram of the battery cover assembly shown;

[0027] Figure 4 for Figure 3 A partial enlarged view of B of the AA cross-sectional structural schematic diagram of the structural schematic diagram of the battery cover assembly shown;

[0028] Figure 5 for Figure 3 A partial enlarged view of C in the AA cross-sectional structural schematic diagram of the structural schematic diagram of the battery cover assembly shown;

[0029] Figure 6 for Figure 1 A schematic diagram of the structure of the lower plastic of the battery cover assembly shown;

[0030] Figure 7 for Figure 1 A schematic structural diagram of the lower plastic of the battery cover assembly from another angle shown;

[0031] Figure 8 for Figure 1 A schematic structural diagram of a connection row of a cell cover assembly shown;

[0032] Fig. 9 for Figure 1 A schematic structural diagram of the first pole of the battery cell cover assembly is shown.

[0033] Icons: 100-cover body; 200-lower plastic; 201-limiting protrusion; 202-limiting hole; 203-limiting groove; 300-connecting row; 301-assembly set; 302-first connecting part; 303-transition part; 304-second connecting part; 305-first connecting hole; 400-first pole; 401-lower connecting plate; 402-first pole body; 500-second pole; 501-first threaded hole; 600-insulating part; 601-insulating ring; 602-insulating sleeve; 700-sealing ring. DETAILED DESCRIPTION

[0034] The terms “first”, “second”, “third”, etc. are only used for distinguishing descriptions and do not indicate the order of arrangement, nor can they be understood as indicating or implying relative importance.

[0035] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0036] In the description of the present application, it should be noted that the terms "inside", "outside", "left", "right", "up", "down", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are directions or positional relationships in which the products of the present application are usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present application.

[0037] In the description of this application, unless otherwise clearly specified and limited, the terms "set", "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 an indirect connection through an intermediate medium, and it can be the internal connection of two elements.

[0038] The technical solution of the present application will be described clearly and completely below in conjunction with the accompanying drawings.

[0039] Reference Figure 1-Figure 9 The utility model provides a battery cover assembly, including a cover body 100, a first pole 400, a second pole 500 and a connecting bar 300; the first pole 400 and the second pole 500 are both arranged on the cover body 100, and the connecting bar 300 is provided with a first mounting hole, and the first pole 400 is arranged in the first mounting hole and extends from the upper end of the connecting bar 300;

[0040] The connection bar 300 is provided with a first connection hole 305 , and the second pole 500 is provided with a first threaded hole 501 .

[0041] In some embodiments, the first pole 400 may be a positive pole, and the second pole 500 may be a negative pole, or the first pole 400 may be a negative pole, and the second pole 500 may be a positive pole; a first threaded hole 501 may be provided on both the first pole 400 and the second pole 500.

[0042] The connecting bar 300 is generally an aluminum bar. One end of the connecting bar 300 is connected to the first pole 400, and the other end can be moved to the upper end of the second pole 500 of the adjacent battery cell, so that the first connecting hole 305 coincides with the first threaded hole 501, and then a screw is used to pass through the first connecting hole 305 and connect with the first threaded hole 501, so as to realize the connection between the connecting bar 300 and the second pole 500 of the adjacent battery cell, so that in the process of battery cell assembly, the series connection of adjacent battery cells is realized.

[0043] When adjacent battery cells need to be connected in parallel, one end of the connection bar 300 is connected to the first pole 400 , and the other end can also be connected to the first pole 400 of the adjacent battery cell.

[0044] In some embodiments, the first pole 400 of one battery cell is connected to the connecting bar 300 , and the second pole 500 of another battery cell is connected to the connecting bar 300 . According to actual needs, both the first pole 400 and the second pole 500 of the battery cell can be provided with the connecting bar 300 .

[0045] The connection row 300 is connected to the second pole 500 by screws, which improves the efficiency of module assembly and makes positioning easier.

[0046] Reference Figure 1 ,exist Figure 1 The middle cell cover plate assembly has only one connection row 300, and the other connection row 300 is the connection row 300 of the adjacent cell; generally, one cell has one connection row 300, and generally a connection row 300 is provided on the first pole 400 of the cell, and the second pole 500 is used to connect with other connection rows 300.

[0047] In an optional implementation, the connection bar 300 is welded to the first pole 400 .

[0048] In order to make the connection between the connecting bar 300 and the first pole 400 more firmly, after the battery cell is assembled, the connecting bar 300 and the first pole 400 are welded, thereby improving the firmness of the connection between the connecting bar 300 and the first pole 400 and further ensuring that the connecting bar 300 and the first pole 400 are connected.

[0049] In an optional embodiment, a second mounting hole is provided on the cover plate body 100, a first mounting groove is provided on the lower end surface of the cover plate body 100, and the second mounting hole is communicated with the first mounting groove;

[0050] The first pole 400 includes a first pole body 402 and a lower connecting plate 401 . The first pole body 402 is disposed on the lower connecting plate 401 . The first pole body 402 is inserted into the second mounting hole. The lower connecting plate 401 is assembled into the first mounting groove.

[0051] In some embodiments, a second connection hole is provided on the cover body 100, the first pole body 402 is inserted into the second connection hole from the lower end of the cover body 100, and the lower connecting plate 401 is assembled in the first mounting groove, so that the first pole body 402 is assembled on the cover body 100.

[0052] The first pole 400 and the second pole 500 are both connected to the cover plate body 100. The first pole 400 and the second pole 500 adopt similar structures. The second pole 500 is not connected to the connecting bar 300, and only the assembly sleeve 301 of the connecting bar 300 is provided. The second pole 500 can also adopt the structure of the prior art, and only the first threaded hole 501 is provided at the upper end of the second pole 500.

[0053] Reference Figure 3 , Figure 6 and Figure 7 In an optional embodiment, it further includes a lower plastic 200, and the lower plastic 200 is arranged at the lower end of the cover body 100;

[0054] The upper end surface of the lower plastic 200 is provided with a limiting protrusion 201 matching the first installation groove, the lower end surface of the lower plastic 200 is provided with a limiting groove 203 corresponding to the limiting protrusion 201, and a limiting hole 202 is provided on the limiting protrusion 201, and the limiting hole 202 is connected with the limiting groove 203;

[0055] The lower connecting plate 401 is assembled in the limiting groove 203 , and the first pole body 402 is inserted into the limiting hole 202 .

[0056] In some embodiments, a lower plastic 200 is provided at the lower end of the cover body 100, and a limiting protrusion 201 is provided on the upper end surface of the lower plastic 200, and the limiting protrusion 201 can be assembled in the first mounting groove, so that the lower plastic 200 is accurately assembled with the cover body 100; the first pole body 402 can pass through the limiting groove 203, the limiting hole 202 and the second mounting hole of the cover body 100 in sequence; the lower connecting plate 401 of the first pole 400 is assembled into the limiting groove 203 of the lower plastic 200, and the limiting protrusion 201 is assembled into the first mounting groove, so that the assembly of the first pole 400 is completed.

[0057] Reference Figure 5 In an optional embodiment, a sealing ring 700 is sleeved on the first pole body 402 , and the upper end surface of the sealing ring 700 abuts against the lower end surface of the cover plate body 100 .

[0058] The upper end surface of the sealing ring 700 sleeved on the first pole body 402 can abut against the lower end surface of the cover body 100 , and the sealing ring 700 can seal the gap between the cover body 100 and the first pole body 402 .

[0059] In an optional embodiment, an insulating member 600 is further included, wherein the insulating member 600 includes an insulating sleeve 602 and an insulating ring 601, and the insulating ring 601 is disposed at the upper end of the insulating sleeve 602;

[0060] The insulating sleeve 602 is sleeved on the first pole body 402 , and the insulating ring 601 is arranged on the upper end surface of the cover plate body 100 .

[0061] Reference Figure 8 In an optional embodiment, the connection row 300 includes a first connection portion 302 and a second connection portion 304, and one end of the first connection portion 302 is connected to one end of the second connection portion 304;

[0062] An assembly sleeve 301 is provided on the first connecting portion 302, and the first mounting hole is connected to the assembly sleeve 301; the assembly sleeve 301 is sleeved on the first pole body 402, and the lower end of the assembly sleeve 301 abuts against the sealing ring 700; the insulating sleeve 602 is sleeved outside the assembly sleeve 301, and the insulating ring 601 is located between the upper end surface and the first connecting portion 302.

[0063] The insulating member 600 may be made of polyphenylene sulfide (PPS), and the insulating sleeve 602 of the insulating member 600 is sleeved on the assembly sleeve 301, and the assembly sleeve 301 is sleeved on the first pole body 402; the insulating sleeve 602 is sleeved on the assembly sleeve 301, so that the insulating sleeve 602 can play a role in physically isolating the cover plate body 100 and the connecting bar 300, and the assembly sleeve 301 is sleeved on the first pole body 402, so that the connection between the first pole body 402 and the connecting bar 300 is ensured, that is, the first pole body 402 and the connecting bar 300 are firmly connected.

[0064] The insulating ring 601 is located between the first connecting portion 302 and the cover body 100 , and the insulating ring 601 physically isolates the connecting bar 300 from the cover body 100 .

[0065] In an optional embodiment, a transition portion 303 is provided between the first connection portion 302 and the second connection portion 304 , the transition portion 303 makes the second connection portion 304 higher than the first connection portion 302 , and the first connection hole 305 is located on the second connection portion 304 .

[0066] The heights of two adjacent battery cells are generally the same, one end of the connecting row 300 is connected to the first pole 400, and the other end is connected to the upper end of the second pole 500 of the adjacent battery cell; that is, one end of the connecting row 300 is high and the other end is low; a transition portion 303 is provided between the first connecting portion 302 and the second connecting plate, one end of the transition portion 303 is connected to the first connecting portion 302, and the other end is connected to the second connecting portion 304, and the transition portion 303 is used for transition, so that the first connecting portion 302 located at the lower position is connected to the second connecting portion 304 located at the higher position.

[0067] The second pole 500 of the battery cover assembly provided by the utility model is provided with a first threaded hole 501, the connecting row 300 is connected to the first pole 400, and a first connecting hole 305 is provided on the connecting row 300. When adjacent battery cells are connected, the connecting row 300 is moved to the upper end of the pole of another battery cell, and screws are inserted into the first connecting hole 305 of the connecting row 300 and screwed into the first threaded hole 501. In this way, the connecting row 300 is connected to the adjacent pole, that is, multiple battery cells are connected in parallel or in series. This connection method improves the connection efficiency of the connecting row 300 and the pole of the adjacent battery cell, and positioning is easier.

[0068] The utility model provides a battery cell, comprising the battery cell cover plate assembly described in any one of the aforementioned implementation modes.

[0069] Compared with the prior art, the battery cell provided by the utility model has the battery cell cover plate assembly provided by the utility model, and thus has all the beneficial effects of the battery cell cover plate assembly provided by the utility model.

[0070] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A battery cover assembly, characterized in that: The invention comprises a cover plate body (100), a first pole (400), a second pole (500) and a connection bar (300); the first pole (400) and the second pole (500) are both arranged on the cover plate body (100); a first mounting hole is arranged on the connection bar (300); the first pole (400) is arranged in the first mounting hole and extends from the upper end of the connection bar (300); A first connection hole (305) is provided on the connection row (300), and a first threaded hole (501) is provided on the second pole (500).

2. The battery cover assembly according to claim 1, characterized in that: The connection bar (300) is welded to the first pole (400).

3. The battery cover assembly according to claim 2, characterized in that: A second mounting hole is provided on the cover plate body (100), a first mounting groove is provided on the lower end surface of the cover plate body (100), and the second mounting hole is connected to the first mounting groove; The first pole (400) comprises a first pole body (402) and a lower connecting plate (401), the first pole body (402) being arranged on the lower connecting plate (401), the first pole body (402) being inserted into the second mounting hole, and the lower connecting plate (401) being assembled into the first mounting groove.

4. The battery cover assembly according to claim 3, characterized in that: It also includes a lower plastic (200), wherein the lower plastic (200) is arranged at the lower end of the cover plate body (100); A limiting protrusion (201) matching the first installation groove is arranged on the upper end surface of the lower plastic (200), a limiting groove (203) corresponding to the limiting protrusion (201) is arranged on the lower end surface of the lower plastic (200), and a limiting hole (202) is arranged on the limiting protrusion (201), and the limiting hole (202) is connected to the limiting groove (203); The lower connecting plate (401) is assembled in the limiting groove (203), and the first pole body (402) is inserted into the limiting hole (202).

5. The battery cover assembly according to claim 4, characterized in that: A sealing ring (700) is sleeved on the first pole body (402), and the upper end surface of the sealing ring (700) abuts against the lower end surface of the cover plate body (100).

6. The battery cover assembly according to claim 5, characterized in that: It also comprises an insulating member (600), wherein the insulating member (600) comprises an insulating sleeve (602) and an insulating ring (601), and the insulating ring (601) is arranged at the upper end of the insulating sleeve (602); The insulating sleeve (602) is sleeved on the first pole body (402), and the insulating ring (601) is arranged on the upper end surface of the cover plate body (100).

7. The battery cover assembly according to claim 6, characterized in that: The connection row (300) comprises a first connection portion (302) and a second connection portion (304), one end of the first connection portion (302) being connected to one end of the second connection portion (304); An assembly sleeve (301) is provided on the first connecting portion (302), and the first mounting hole is communicated with the assembly sleeve (301); the assembly sleeve (301) is sleeved on the first pole body (402), and the lower end of the assembly sleeve (301) is in contact with the sealing ring (700); the insulating sleeve (602) is sleeved outside the assembly sleeve (301), and the insulating ring (601) is located between the upper end surface and the first connecting portion (302).

8. The battery cover assembly according to claim 7, characterized in that: A transition portion (303) is provided between the first connection portion (302) and the second connection portion (304), and the transition portion (303) makes the second connection portion (304) higher than the first connection portion (302), and the first connection hole (305) is located on the second connection portion (304).

9. The battery cell cover plate assembly according to claim 6, characterized in that: The insulating member (600) is made of PPS.

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

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