Nickel sheet structure and battery cell assembly with same

Abstract

The utility model provides a nickel sheet structure and a battery cell assembly with the same. The nickel sheet structure comprises a connecting part main body and a bent sheet body, the connecting part main body is connected with a battery cell; one end of the bent sheet body is connected with the connecting part main body, the bent sheet body is provided with a first limiting groove used for containing part of sheet bodies of the circuit board, the bent sheet body is provided with a clamping segment, the clamping segment is used for defining the first limiting groove, the circuit board is provided with a positioning hole, and the clamping segment is arranged in the positioning hole in a penetrating mode; the problems that in the prior art, a battery cell assembly needs to limit and fix a nickel sheet, so that the overall structure is complex, and the production cost is high are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery packaging structure technical field, specifically, relate to a nickel sheet structure and have its electric core subassembly. BACKGROUND

[0002] At present, nickel sheet is used very widely in battery installation as the main connecting piece of electric core group connection, and because copper sheet is easily oxidized under the influence of environment and current when connecting electric core, therefore, it is more reasonable to select nickel sheet as the metal with strong self-stabilizing effect as the connection of electric core, and the service life of general nickel sheet can reach for ten years.

[0003] However, after the nickel sheet is connected to the electric core electrode through the butt welding process, the lead-out part needs to be arranged to connect the wire or electrical element to realize power supply, because one nickel sheet needs to span two electric cores when the electric cores are connected in series and parallel, thereby having a longer side and a shorter side, in the conventional design, the longer side is often fixed by designing the limiting column, the limiting rib or the screw column for screw fixing or using other auxiliary materials for limiting and fixing, which makes the overall structure complex in design, even leads to complex and tedious production process, increases the product development cycle, reduces the production capacity, and the PCM welding needs to be fixed by the welding fixture, thereby increasing the production cost. SUMMARY

[0004] The main purpose of the utility model is to provide a nickel sheet structure and an electric core subassembly with the same, so as to solve the problem that the electric core subassembly in the prior art needs to limit and fix the nickel sheet, thereby leading to complex overall structure and high production cost.

[0005] In order to achieve the above purpose, according to one aspect of the utility model, a nickel sheet structure is provided, which comprises: a connecting part body for connecting with an electric core; a bending sheet body, one end of the bending sheet body is connected with the connecting part body, the bending sheet body has a first limiting groove for accommodating part of the sheet body of a circuit board, the bending sheet body has a clamping piece segment, the clamping piece segment is used for surrounding the first limiting groove, a positioning hole is arranged on the circuit board, and the clamping piece segment is arranged in the positioning hole.

[0006] Further, the bending sheet body comprises: a first connecting piece segment and a second connecting piece segment, which are respectively connected with two ends of the clamping piece segment to surround the first limiting groove, and the clamping piece segment is arranged at a first included angle with the first connecting piece segment and the second connecting piece segment.

[0007] Further, the bending sheet body further comprises: a third connecting piece segment and a fourth connecting piece segment, one end of the third connecting piece segment is connected with the connecting part body, the other end of the third connecting piece segment is connected with the fourth connecting piece segment, one end of the fourth connecting piece segment is connected with the first connecting piece segment, and the fourth connecting piece segment is arranged at a second included angle with the third connecting piece segment and the first connecting piece segment.

[0008] Further, the third connecting segment, the fourth connecting segment and the first connecting segment enclose a second limiting groove for accommodating at least part of the first insulating member, and a slot opening direction of the second limiting groove is opposite to a slot opening direction of the first limiting groove.

[0009] Further, the first connecting segment, the second connecting segment and the third connecting segment have a same length; and / or, the clamping segment and the fourth connecting segment have a same length.

[0010] Further, the first connecting segment, the second connecting segment, the third connecting segment, the fourth connecting segment, the clamping segment and the connecting body are integrally formed.

[0011] Further, a flow guide hole is arranged on the connecting body for guiding current, and the flow guide hole is in a strip hole shape.

[0012] According to another aspect of the utility model, a kind of electric core assembly is provided, comprising: at least two above-mentioned nickel sheet structures;At least two electric cores, at least two nickel sheet structures one-to-one corresponding with the end of at least two electric cores is connected.

[0013] Further, the electric core assembly further comprises: circuit board, two positioning holes are arranged on the circuit board, the clamping segment of two nickel sheet structures is respectively correspondingly clamped in the positioning hole and the first connecting segment and the second connecting segment respectively with the surface of circuit board abut;And / or, the first insulating member, between electric core and nickel sheet structure and the two ends of the first insulating member are correspondingly arranged in the second limiting groove of two nickel sheet structures, and the first connecting segment and the second connecting segment of nickel sheet structure respectively with the surface of the first insulating member abut.

[0014] Further, the electric core assembly further comprises: two second insulating members, correspondingly arranged in two first limiting grooves respectively and contact with circuit board and second connecting segment.

[0015] The technical scheme of the utility model, nickel sheet structure includes connecting body and bending sheet body;Connecting body is used for being connected with electric core;One end of bending sheet body is connected with connecting body, and bending sheet body has first limiting groove for accommodating part of sheet body of circuit board, and bending sheet body has clamping segment, and clamping segment is used to enclose first limiting groove, and positioning hole is arranged on circuit board, and clamping segment is arranged in positioning hole. In this way, by clamping segment clamped in the positioning hole on circuit board and part of sheet body on circuit board is located in first limiting groove, circuit board is fixedly arranged relative to electric core, and other limiting column, limiting rib and the like structure need not be specially increased on circuit board and shell of installed electric core, and its overall structure is more simplified, production cost is reduced, and production capacity is improved, to solve the problem that electric core assembly in prior art needs to limit and fix nickel sheet, so that the overall structure is complex and production cost is high. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0017] Figure 1 A schematic diagram of the overall structure according to an embodiment of the nickel sheet structure of this utility model is shown;

[0018] Figure 2 An exploded view of an embodiment of the battery cell assembly according to the present invention is shown;

[0019] Figure 3 A partial structural schematic diagram of an embodiment of the battery cell assembly according to the present invention is shown.

[0020] The above figures include the following reference numerals:

[0021] 1. Nickel sheet structure; 2. Battery cell; 10. Connecting part body; 11. Guide hole; 20. Bending sheet body; 21. First limiting groove; 22. Snap-fit ​​segment; 23. First connecting segment; 24. Second connecting segment; 25. Third connecting segment; 26. Fourth connecting segment; 27. Second limiting groove; 30. Circuit board; 31. Positioning hole; 40. First insulating component; 50. Second insulating component. Detailed Implementation

[0022] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0023] To address the problem that existing battery cell assemblies require limiting and fixing nickel sheets, resulting in complex overall structures and high production costs, this invention provides a nickel sheet structure and a battery cell assembly incorporating it.

[0024] Please refer to Figure 1 As shown, one aspect of the technical solution of this utility model provides a nickel sheet structure 1, including a connecting body 10 and a bent sheet body 20; the connecting body 10 is used to connect with the battery cell 2; one end of the bent sheet body 20 is connected to the connecting body 10, the bent sheet body 20 has a first limiting groove 21 for accommodating a portion of the sheet body of the circuit board 30, the bent sheet body 20 has a snap-fit ​​segment 22, the snap-fit ​​segment 22 is used to form the first limiting groove 21, the circuit board 30 is provided with a positioning hole 31, and the snap-fit ​​segment 22 passes through the positioning hole 31.

[0025] In an aspect of the technical solution of the embodiment, the clamping segment 22 is clamped in the positioning hole 31 on the circuit board 30, and part of the sheet body on the circuit board 30 is located in the first limiting groove 21, so that the circuit board 30 is fixedly arranged relative to the battery cell 2, and no other limiting column, limiting rib or the like structure needs to be specially added on the circuit board 30 and the shell in which the battery cell 2 is arranged, the overall structure is more simplified, the production cost is reduced, and the production capacity is improved, thereby solving the problem that the battery cell 2 assembly in the prior art needs to limit and fix the nickel sheet, resulting in a complex overall structure and high production cost.

[0026] In the embodiment, the bent sheet body 20 includes a first connecting segment 23 and a second connecting segment 24, the first connecting segment 23 and the second connecting segment 24 are respectively connected with two ends of the clamping segment 22 to enclose the first limiting groove 21, and the clamping segment 22 is arranged at a first included angle with the first connecting segment 23 and the second connecting segment 24. The first included angle is a right angle, so that the clamping segment 22 is clamped in the positioning hole 31 on the circuit board 30, and the first connecting segment 23 and the second connecting segment 24 are respectively in contact with the circuit board 30, thereby being fixedly connected relative to the battery cell 2, the overall structure is simple, the production cost is low, and the production capacity is greatly improved.

[0027] Specifically, the bent sheet body 20 further includes a third connecting segment 25 and a fourth connecting segment 26, one end of the third connecting segment 25 is connected with the connecting portion main body 10, the other end of the third connecting segment 25 is connected with the fourth connecting segment 26, the fourth connecting segment 26 is connected with one end of the first connecting segment 23, and the fourth connecting segment 26 is arranged at a second included angle with the third connecting segment 25 and the first connecting segment 23. The second included angle is a right angle.

[0028] Specifically, the third connecting segment 25, the fourth connecting segment 26 and the first connecting segment 23 enclose a second limiting groove 27 for accommodating at least part of the first insulating member 40, and the groove opening direction of the second limiting groove 27 is opposite to the groove opening direction of the first limiting groove 21. In this way, the two ends of the first insulating member 40 are respectively clamped in the two second limiting grooves 27, so as to limit the displacement of the first insulating member 40 along the extension direction thereof, and the first insulating frame is arranged between the battery cell 2 and the circuit board 30, so that the short circuit phenomenon between the circuit board 30 and the battery cell 2 in the subsequent process can be avoided.

[0029] In the embodiment, the first insulating member 40 is a foam.

[0030] Optionally, the first connecting segment 23, the second connecting segment 24, and the third connecting segment 25 have the same length; this makes the contact area between the bent sheet 20 and the circuit board 30 and the first insulating member 40 consistent, and at the same time, by setting the consistent length, the production cost is reduced and the complexity of the production process is reduced.

[0031] Optionally, the lengths of the snap-fit ​​segment 22 and the fourth connecting segment 26 are the same. With this configuration, the lengths of the snap-fit ​​segment 22 and the fourth connecting segment 26 can be selected according to the thicknesses of the circuit board 30 and the first insulating member 40. This ensures sufficient contact between the bent piece 20 and the circuit board 30 and the first insulating member 40, respectively. Simultaneously, by setting a length consistent with the thicknesses of the circuit board 30 and the first insulating member 40, production costs are minimized, and the complexity of the manufacturing process is reduced.

[0032] In this embodiment, the first connecting segment 23, the second connecting segment 24, the third connecting segment 25, the fourth connecting segment 26, the snap-fit ​​segment 22, and the connecting body 10 are integrally formed. Thus, during assembly, the first insulating member 40 and the circuit board 30 are sequentially arranged, and the integrally formed nickel sheet structure 1 is bent to weld it to the circuit board 30 and the first insulating member 40 respectively.

[0033] Specifically, the main body 10 of the connecting part is provided with a guide hole 11 for guiding the current. The guide hole 11 is strip-shaped. The above arrangement makes it easier for the reactants in the cell 2 to enter the nickel sheet structure 1 through the guide hole 11, thereby improving the effectiveness of the reaction. Furthermore, other materials, such as catalysts or other functional materials, can be machined into the guide hole 11 to achieve specific functional or performance requirements.

[0034] like Figure 2 and Figure 3 As shown, another aspect of the technical solution of this utility model provides a battery cell assembly, including at least two nickel sheet structures 1 and at least two battery cells 2; the at least two nickel sheet structures 1 are connected to the ends of the at least two battery cells 2 in a one-to-one correspondence. It should be noted that the number of nickel sheet structures 1 and battery cells 2 is even; in this embodiment, there are two nickel sheet structures 1 and two battery cells 2. In the above arrangement, the two battery cells 2 are respectively positive and negative electrodes, and the two nickel sheet structures 1 are respectively connected to the ends of the two battery cells 2 that are positive and negative electrodes.

[0035] Specifically, the battery cell 2 assembly further comprises a circuit board 30 and a first insulating piece 40; the circuit board 30 is provided with two positioning holes 31, the clamping segments 22 of the two nickel sheet structures 1 are respectively clamped in the positioning holes 31, and the first connecting segments 23 and the second connecting segments 24 respectively abut against the surface of the circuit board 30; the first insulating piece 40 is located between the battery cell 2 and the nickel sheet structure 1, and the two ends of the first insulating piece 40 are respectively arranged in the second limiting grooves 27 of the two nickel sheet structures 1, and the first connecting segments 23 and the second connecting segments 24 of the nickel sheet structure 1 respectively abut against the surface of the first insulating piece 40. In this way, the nickel sheet structure 1 is respectively limited and connected with the battery cell 2 and the circuit board 30, and the first insulating piece 40 is arranged between the battery cell 2 and the circuit board 30, thereby preventing the short circuit phenomenon between the battery cell 2 and the circuit board 30, so that the battery cell 2, the first insulating piece 40 and the circuit board 30 are fixedly connected. Compared with the conventional design, the positioning and limiting fixing structure of the PCM is often designed as a limiting column, a limiting rib or a screw column for screw fixing or other auxiliary limiting fixing, and the overall structure of the utility model is simpler, the production process is simple, the production cost is lower, and the production efficiency is greatly improved.

[0036] In the embodiment, the battery cell 2 assembly further comprises two second insulating pieces 50, which are respectively arranged in the two first limiting grooves 21 and respectively contact the circuit board 30 and the second connecting segments 24. The second insulating piece 50 is a heat-conducting paste or a heat-conducting glue, so that the nickel sheet structure 1 is connected with the circuit board 30 through the second insulating piece 50, thereby improving the heat conduction efficiency between the nickel sheet structure 1 and the circuit board 30, ensuring that the heat energy can be effectively transmitted to the circuit board 30, and the second insulating piece 50 can also fill the small gap between the nickel sheet structure 1 and the circuit board 30, avoiding the generation of thermal resistance, thereby improving the overall performance of the circuit board 30.

[0037] In the embodiment, the battery cell 2 assembly further comprises two mutually connected outer housings, a nickel sheet connecting the other ends of the two battery cells 2 and an insulating protective sleeve arranged between the nickel sheet and the battery cells 2, and the two battery cells 2 and the nickel sheet structure 1 are arranged in the outer housings.

[0038] From the above description, it can be seen that the above-mentioned embodiments of the utility model realize the following technical effects:

[0039] The nickel sheet structure comprises a connecting portion body and a bent sheet body; the connecting portion body is used for connecting with the battery cell; one end of the bent sheet body is connected with the connecting portion body, the bent sheet body has a first limiting slot for accommodating part of the sheet body of the circuit board, and the bent sheet body has a clamping segment for surrounding the first limiting slot so that the positioning hole on the circuit board is clamped on the clamping segment. In this way, the circuit board is fixedly arranged relative to the battery cell by clamping the clamping segment in the positioning hole on the circuit board and locating part of the sheet body of the circuit board in the first limiting slot, and no other limiting column, limiting rib or the like structure needs to be specially added on the circuit board and the shell for mounting the battery cell, the overall structure is more simplified, the production cost is reduced, and the production capacity is improved, thereby solving the problems that the battery cell assembly in the prior art needs to limit and fix the nickel sheet, the overall structure is complex, and the production cost is high.

[0040] It is to be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, elements, components, and / or groups thereof, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof.

[0041] The relative arrangement of parts and steps, numerical expressions, and numerical values set forth in the examples are not intended to limit the scope of the present application, unless otherwise specifically stated. It is to be understood that the drawings are not necessarily to scale as the dimensions of the parts shown are for the purpose of illustration and description only. To the extent that techniques, methods, and apparatus known to those of ordinary skill in the relevant art(s) are not described in detail, it is to be understood that such techniques, methods, and apparatus are not excluded from this disclosure. In all examples shown and discussed herein, any specific values are to be interpreted as merely illustrative and not limiting. Other examples of the example embodiments can have different values. It is noted that like numbers and letters on the figures identify like parts throughout the several figures, and therefore, further discussion of the same will not be repeated.

[0042] In the description of the present application, it is to be understood that the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" and the like indicated orientation or position relationship are usually based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, without the opposite description, these orientation words do not indicate and imply that the indicated device or element must have a specific orientation or be constructed and operated in a specific orientation, therefore, it cannot be understood as a limitation on the protection scope of the present application; the orientation words "inner, outer" refer to the inner and outer of the contour of each part itself.

[0043] For purposes of the description hereinafter, spatial relative terms, such as "above", "below", "upper", "lower", and the like, can be used to describe the relative position of one element or feature to another as illustrated in the figures. It will be understood that the spatial relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. For example, if a device in the figures is inverted, elements described as "above" or "up" other elements or features would then be oriented "below" or "down" the other elements or features. Thus, the exemplary term "above" can encompass both an orientation of above and below. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly. Well-known functions or constructions can not be described in detail for brevity.

[0044] The preferred embodiments of the present application have been described above with the purpose of enabling not only the best modes contemplated by the inventor of carrying out the application, but also as examples of embodiments of the present application to assist those of ordinary skill in the art in understanding the application and its practical application. Various modifications and changes can be made to the present application by those of ordinary skill in the art which fall within the scope of the present application without departing from the spirit and scope of the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the scope of the present application.

Claims

1. A nickel sheet structure, characterized by, The nickel sheet structure (1) comprises: a connecting portion body (10) for connecting with an electric core (2); a bending sheet body (20), one end of the bending sheet body (20) is connected with the connecting portion body (10), the bending sheet body (20) has a first limiting groove (21) for accommodating a part of a circuit board (30), the bending sheet body (20) has a clamping segment (22) for surrounding the first limiting groove (21), the circuit board (30) is provided with a positioning hole (31), and the clamping segment (22) is arranged in the positioning hole (31).

2. The nickel sheet structure of claim 1, wherein The bending sheet body (20) comprises: a first connecting segment (23) and a second connecting segment (24) respectively connected with two ends of the clamping segment (22) to surround the first limiting groove (21), and the clamping segment (22) is arranged at a first included angle with the first connecting segment (23) and the second connecting segment (24).

3. The nickel sheet structure of claim 2, wherein, The bending sheet body (20) further comprises: a third connecting segment (25) and a fourth connecting segment (26), one end of the third connecting segment (25) is connected with the connecting portion body (10), the other end of the third connecting segment (25) is connected with the fourth connecting segment (26), the fourth connecting segment (26) is connected with one end of the first connecting segment (23), and the fourth connecting segment (26) is arranged at a second included angle with the third connecting segment (25) and the first connecting segment (23).

4. The nickel sheet structure of claim 3, wherein, The third connecting segment (25), the fourth connecting segment (26) and the first connecting segment (23) surround a second limiting groove (27) for accommodating at least part of a first insulating member (40), and a groove opening direction of the second limiting groove (27) is opposite to a groove opening direction of the first limiting groove (21).

5. The nickel sheet structure of claim 3, wherein The first connecting segment (23), the second connecting segment (24) and the third connecting segment (25) have the same length; and / or the clamping segment (22) and the fourth connecting segment (26) have the same length.

6. The nickel sheet structure of claim 3, wherein The first connecting segment (23), the second connecting segment (24), the third connecting segment (25), the fourth connecting segment (26), the clamping segment (22) and the connecting portion body (10) are integrally formed.

7. The nickel sheet structure of claim 1, wherein The connecting portion body (10) is provided with a flow guide hole (11) for guiding current, and the flow guide hole (11) is in the shape of a strip hole.

8. An electrochemical cell assembly, characterized by, The nickel sheet structure (1) comprises: at least two nickel sheet structures (1) according to any one of claims 1 to 7; at least two electric cores (2), and at least two nickel sheet structures (1) are connected with end portions of at least two electric cores (2) in one-to-one correspondence.

9. The cell assembly of claim 8, wherein, The electric core assembly further comprises: a circuit board (30), the circuit board (30) is provided with two positioning holes (31), clamping segments (22) of two nickel sheet structures (1) are respectively clamped in the positioning holes (31), and first connecting segments (23) and second connecting segments (24) respectively abut against surfaces of the circuit board (30); and / or A first insulating piece (40) is arranged between the battery cell (2) and the nickel sheet structure (1), and both ends of the first insulating piece (40) are respectively arranged in the second limiting grooves (27) of the two nickel sheet structures (1), and the first connecting segments (23) and the second connecting segments (24) of the nickel sheet structures (1) respectively abut the surface of the first insulating piece (40).

10. The cell assembly of claim 9, wherein, The battery cell assembly further comprises: Two second insulating pieces (50) are respectively arranged in the two first limiting grooves (21) and respectively contact the circuit board (30) and the second connecting segments (24).

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