Pole assembly, top cover assembly and battery

Abstract

The utility model discloses a pole assembly, a top cover assembly and a battery, the pole assembly is used for the top cover assembly, the pole assembly penetrates through the top cover assembly and comprises a diversion section, the diversion section penetrates through the top cover assembly, and the length of the diversion section along the length direction of the top cover assembly is greater than the length of the diversion section along the width direction of the top cover assembly. According to the pole assembly disclosed by the utility model, the cross sectional area of the diversion section can be increased under the condition that the width of the diversion section along the top cover assembly is not changed, so that the overcurrent capacity of the diversion section is improved, and the overcurrent capacity of the pole assembly is improved. And an additional pole assembly is not required to be arranged, so that the over-current capability is improved, and the cost is reduced.

Description

Technical Field

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

[0002] The cross-section of the pole column rod of the existing cover plate is basically cylindrical. When the width of the cover plate is small, the size of the pole column diameter is limited, resulting in a low over-current capacity of the cover plate. At the same time, when the cover plate is narrow and large current charging and discharging is required, a bipolar column structure needs to be adopted to meet the over-current capacity, and the adoption of the bipolar column structure will increase the cost. Summary of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a pole column assembly, which improves the over-current capacity and reduces the cost.

[0004] The utility model also provides a top cover assembly, including the above-mentioned pole column assembly.

[0005] The utility model also provides a battery, including the above-mentioned top cover assembly.

[0006] The pole column assembly according to the embodiment of the utility model is used for the top cover assembly. The pole column assembly penetrates through the top cover assembly and includes a diversion section, which penetrates through the top cover assembly. The length of the diversion section along the length direction of the top cover assembly is greater than the length along the width direction of the top cover assembly.

[0007] According to the pole column assembly of the embodiment of the utility model, by arranging the diversion section to penetrate through the top cover assembly, and the length of the diversion section along the length direction of the top cover assembly is greater than the length along the width direction of the top cover assembly, when the width of the diversion section along the top cover assembly remains unchanged, the cross-sectional area of the diversion section can be increased, thereby improving the over-current capacity of the diversion section, and further improving the over-current capacity of the pole column assembly. And there is no need to set an additional pole column assembly to improve the over-current capacity, reducing the cost.

[0008] In some embodiments of the utility model, the length of the diversion section along the length direction of the top cover assembly is a, and the length of the diversion section along the width direction of the top cover assembly is b, b≥4mm, 1≤a / b≤4.

[0009] In some embodiments of the utility model, the projection profile of the diversion section on the top cover assembly is an ellipse, a polygon or a racetrack shape.

[0010] In some embodiments of the utility model, the pole column assembly further includes a first connection section, which is arranged at one end of the diversion section along the thickness direction of the top cover assembly and is connected to the diversion section. The first connection section is suitable for being electrically connected to the electrode group.

[0011] In some embodiments of the present invention, the projection of the guide section on the first connecting section falls completely on the first connecting section, the length of the guide section along the length direction of the top cover assembly is a, the length of the first connecting section along the length direction of the top cover assembly is c, and a / c≤0.8.

[0012] In some embodiments of the utility model, the pole assembly also includes: a second connecting section, which is arranged at an end of the guide section away from the first connecting section and connected to the guide section, and the second connecting section is suitable for passing through the connecting block of the top cover assembly and connected to the connecting block.

[0013] In some embodiments of the present invention, the projection of the second connecting section on the guide section completely falls on the guide section.

[0014] In some embodiments of the present invention, the projection contour of the second connecting section on the guide section is circular.

[0015] The top cover assembly according to the embodiment of the utility model includes the above-mentioned pole assembly.

[0016] According to the top cover assembly of the embodiment of the utility model, by setting the above-mentioned pole assembly, the guide section is arranged through the top cover assembly, and the length of the guide section along the length direction of the top cover assembly is greater than the length along the width direction of the top cover assembly, so that when the width of the guide section along the top cover assembly remains unchanged, the cross-sectional area of ​​the guide section can be increased, thereby improving the flow capacity of the guide section, thereby improving the flow capacity of the pole assembly. And there is no need to increase the flow capacity by setting an additional pole assembly, which reduces the cost.

[0017] A battery according to an embodiment of the utility model includes the above-mentioned top cover assembly.

[0018] According to the battery of the embodiment of the utility model, by setting the above-mentioned top cover assembly and the above-mentioned pole assembly, the guide section is arranged through the top cover assembly, and the length of the guide section along the length direction of the top cover assembly is greater than the length along the width direction of the top cover assembly, so that when the width of the guide section along the top cover assembly remains unchanged, the cross-sectional area of ​​the guide section can be increased, thereby improving the flow capacity of the guide section, thereby improving the flow capacity of the pole assembly. And there is no need to increase the flow capacity by setting an additional pole assembly, which reduces the cost.

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

[0020] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the following description of the embodiments in conjunction with the accompanying drawings, where:

[0021] Figure 1 is an exploded view of a top cover assembly according to an embodiment of the present utility model;

[0022] Figure 2 is a cross-sectional view of a top cover assembly according to an embodiment of the present utility model;

[0023] Figure 3 is Figure 2 an enlarged view at D in

[0024] Figure 4 is a front view of a terminal post assembly according to an embodiment of the present utility model;

[0025] Figure 5 is a top view of a terminal post assembly according to an embodiment of the present utility model.

[0026] Reference numerals:

[0027] 100, top cover assembly;

[0028] 10, terminal post assembly;

[0029] 1, first connection section;

[0030] 2, second connection section;

[0031] 3, diversion section;

[0032] 20, cover body;

[0033] 30, first insulating member;

[0034] 40, second insulating member;

[0035] 50, connection block;

[0036] 60, sealing ring. Detailed Description of the Embodiment

[0037] The embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described by referring to the accompanying drawings are exemplary only for explaining the present utility model and should not be construed as limiting the present utility model.

[0038] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is 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 orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise stated, the meaning of "a plurality" is two or more.

[0039] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "coupling" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0040] The following refers to Figures 1 - 5 Describe the terminal post assembly 10 according to an embodiment of the present utility model.

[0041] As Figures 3 - 5 shown, the terminal post assembly 10 according to an embodiment of the present utility model includes a diversion section 3.

[0042] Specifically, referring to Figures 3 - 5 , the terminal post assembly 10 is for the top cover assembly 100. The terminal post assembly 10 is passed through the top cover assembly 100, and the diversion section 3 is passed through the top cover assembly 100. The length of the diversion section 3 in the length direction of the top cover assembly 100 is greater than the length in the width direction of the top cover assembly 100.

[0043] It can be understood that the length of the diversion section 3 in the width direction of the top cover assembly 100 can adapt to the width of the top cover assembly 100, so that the terminal post assembly 10 can be applicable to top cover assemblies 100 with different widths. For example, when the width of the top cover assembly 100 is relatively narrow, the length of the diversion section 3 in the width direction of the top cover assembly 100 can be reduced to adapt to the width of the top cover assembly 100. When the width of the top cover assembly 100 is relatively large, the length of the diversion section 3 in the width direction of the top cover assembly 100 can be increased to adapt to the width of the top cover assembly 100.

[0044] Since the length of the diversion section 3 in the length direction of the top cover assembly 100 is greater than the length in the width direction of the top cover assembly 100, when the width of the diversion section 3 along the top cover assembly 100 remains unchanged, that is, in the case of being applicable to top cover assemblies 100 of different widths, the cross-sectional area of the diversion section 3 can be increased, thereby improving the flow-through capacity of the diversion section 3, and thus improving the flow-through capacity of the pole column assembly 10, so as to meet the product requirements. At the same time, in one top cover assembly 100, there is no need to set an additional pole column assembly 10 to improve the flow-through capacity (that is, in one top cover assembly 100, only one pole column assembly 10 needs to be set), which reduces the cost.

[0045] For the pole column assembly 10 according to the embodiment of the present invention, the diversion section 3 passes through the top cover assembly 100, and the length of the diversion section 3 in the length direction of the top cover assembly 100 is greater than the length in the width direction of the top cover assembly 100. When the width of the diversion section 3 along the top cover assembly 100 remains unchanged, the cross-sectional area of the diversion section 3 can be increased, thereby improving the flow-through capacity of the diversion section 3, and thus improving the flow-through capacity of the pole column assembly 10. And there is no need to set an additional pole column assembly 10 to improve the flow-through capacity, which reduces the cost.

[0046] In some embodiments of the present invention, as Figure 5 shown, the length of the diversion section 3 in the length direction of the top cover assembly 100 is a, and the length of the diversion section 3 in the width direction of the top cover assembly 100 is b, b≥4mm, such as 4mm, 5mm, 6mm or 7mm, etc., 1≤a / b≤4, such as 1, 2, 3 or 4, etc.

[0047] It can be understood that b≥4mm, thus ensuring that the length of the diversion section 3 in the width direction of the top cover assembly 100 is long enough, thus ensuring that the cross-sectional area of the diversion section 3 is large enough, ensuring the flow-through capacity of the diversion section 3, and thus ensuring the flow-through capacity of the pole column assembly 10.

[0048] And 1≤a / b≤4. On the one hand, it can avoid the length of the diversion section 3 in the length direction of the top cover assembly 100 being too long, saving the manufacturing cost. On the other hand, it can avoid the length of the diversion section 3 in the length direction of the top cover assembly 100 being too short, thus ensuring that the cross-sectional area of the diversion section 3 is large enough, ensuring the flow-through capacity of the diversion section 3, and thus ensuring the flow-through capacity of the pole column assembly 10.

[0049] In some embodiments of the present invention, as Figure 5As shown, the projection profile of the guide section 3 on the top cover assembly 100 is an ellipse, a polygon (such as a triangle, rectangle, pentagon or hexagon, etc.) or a runway shape. It should be noted that when the projection profile of the guide section 3 on the top cover assembly 100 is an ellipse, the major axis of the ellipse extends along the length direction of the top cover assembly 100; when the projection profile of the guide section 3 on the top cover assembly 100 is a rectangle, the two opposite sides of the rectangle along the width direction of the top cover assembly 100 are longer than the two opposite sides of the rectangle along the length direction of the top cover assembly 100; when the projection profile of the guide section 3 on the top cover assembly 100 is a runway shape, the runway shape refers to two semicircles arranged oppositely along the length direction of the top cover assembly 100 protruding in a direction away from each other, and the two ends of one semicircle along the width direction of the top cover assembly 100 and the two ends of the other semicircle along the width direction of the top cover assembly 100 are arranged one by one and are respectively connected by a straight line.

[0050] It can be understood that the projection profile of the guide segment 3 on the top cover assembly 100 is elliptical, rectangular or track-shaped, so that the guide segment 3 can change its shape according to different situations, thereby meeting different product requirements and improving applicability.

[0051] In some embodiments of the present invention, Figures 3 - 5 As shown, the pole assembly 10 further includes: a first connecting section 1, the first connecting section 1 is arranged at one end of the guide section 3 along the thickness direction of the top cover assembly 100 and is connected to the guide section 3, and the first connecting section 1 is suitable for being electrically connected to the pole group. It can be understood that the pole group is arranged on a side of the first connecting section 1 away from the guide section 3, and is electrically connected to the pole group through the first connecting section 1, so that the current can be drawn from the first connecting section 1 and flow into the guide section 3, thereby realizing the current drawing.

[0052] In some embodiments of the present invention, Figure 5 As shown, the projection of the guide segment 3 on the first connecting segment 1 completely falls on the first connecting segment 1, the length of the guide segment 3 along the length direction of the top cover assembly 100 is a, the length of the first connecting segment 1 along the length direction of the top cover assembly 100 is c, and a / c≤0.8, for example 0.8, 0.7, 0.6 or 0.5, etc.

[0053] It is understandable that the top cover assembly 100 has a mounting hole, and the guide section 3 is inserted into the mounting hole. Since the projection of the guide section 3 on the first connecting section 1 completely falls on the first connecting section 1, the first connecting section 1 cannot pass through the mounting hole, thereby preventing the pole assembly 10 from falling off. And a / c≤0.8, thereby preventing the guide section 3 from being too long along the length direction of the top cover assembly 100 and interfering with the first connecting section 1. At the same time, it can also further make the projection of the guide section 3 on the first connecting section 1 completely fall on the first connecting section 1, thereby further limiting the falling off of the pole assembly 10. In addition, it is also ensured that the first connecting section 1 has a sufficient length along the length direction of the top cover assembly 100, thereby ensuring that the first connecting section 1 has a sufficient cross-sectional area, thereby ensuring the flow capacity of the first connecting section 1.

[0054] In some embodiments of the present invention, Figures 3 - 5 As shown, the pole assembly 10 also includes: a second connecting section 2, which is arranged at the end of the guide section 3 away from the first connecting section 1 and connected to the guide section 3, and the second connecting section 2 is suitable for passing through the connecting block 50 of the top cover assembly 100 and connected to the connecting block 50.

[0055] It can be understood that the first connecting section 1 can lead the current to the guiding section 3, the guiding section 3 leads the current to the second connecting section 2, and the second connecting section 2 leads the current to the connecting block 50. The connecting block 50 can be a riveted block. The connecting block 50 is suitable for connecting to electrical equipment, thereby achieving current conduction to the electrical equipment and powering the electrical equipment.

[0056] Furthermore, if Figures 1 - 3 As shown, the connecting block 50 has a through hole, the second connecting section 2 is inserted into the through hole, and the peripheral wall of the second connecting section 2 is connected to the inner peripheral wall of the through hole, thereby ensuring the contact area between the connecting block 50 and the second connecting section 2 and improving the flow capacity between the connecting block 50 and the second connecting section 2.

[0057] In some embodiments of the present invention, Figures 3 - 5 As shown, the projection of the second connecting section 2 on the guide section 3 completely falls on the guide section 3. It can be understood that, since the second connecting section 2 and the connecting block 50 are in contact and fit, the length of the whole formed by the second connecting section 2 and the connecting block 50 along the length direction of the top cover assembly 100 is sufficient, and there is no need for an excessively large cross-sectional area to ensure its flow capacity, thereby reducing the cross-sectional area of ​​the second connecting section 2, thereby facilitating processing and manufacturing, and reducing manufacturing costs.

[0058] In some embodiments of the present invention, Figures 3 - 5 As shown, the projection profile of the second connecting section 2 on the guide section 3 is circular, so that the shape of the second connecting section 2 is regular, which facilitates the production of the second connecting section 2 and reduces the production cost.

[0059] The following refers to Figures 1 - 3 describe the top cover assembly 100 according to an embodiment of the present utility model.

[0060] As Figure 1 and Figure 3 shown, the top cover assembly 100 according to an embodiment of the present utility model includes the above-mentioned terminal post assembly 10.

[0061] Furthermore, as Figures 1 - 3 shown, the top cover assembly 100 further includes: a connection block 50, a second insulating member 40, a cover body 20, a first insulating member 30 and a sealing ring 60. The terminal post assembly 10 includes a first connection section 1, a second connection section 2 and a current guiding section 3.

[0062] Among them, the second insulating member 40 is provided on the side of the cover body 20 facing away from the electrode group. The side of the second insulating member 40 facing away from the cover body 20 has a mounting groove. The connection block 50 is provided in the mounting groove. The second connection section 2 passes through the connection block 50. The second insulating member 40 realizes insulation between the connection block 50 and the cover body 20. The first insulating member 30 is provided on the side of the cover body 20 facing away from the second insulating member 40. The first connection section 1 is provided on the side of the cover body 20 facing away from the second insulating member 40. The first insulating member 30 realizes insulation between the first connection section 1 and the cover body 20. The current guiding section 3 passes through the second insulating member 40, the cover body 20 and the first insulating member 30. The sealing ring 60 is sleeved outside the current guiding section 3 and is provided between the current guiding section 3 and the cover body 20, which can not only realize insulation between the current guiding section 3 and the cover body 20, but also realize sealing between the current guiding section 3 and the cover body 20, avoiding the connection between the inside of the battery and the external environment.

[0063] For the top cover assembly 100 according to an embodiment of the present utility model, by providing the above-mentioned terminal post assembly 10, the current guiding section 3 passes through the top cover assembly 100, and the length of the current guiding section 3 along the length direction of the top cover assembly 100 is greater than the length along the width direction of the top cover assembly 100. When the width of the current guiding section 3 along the top cover assembly 100 remains unchanged, the cross-sectional area of the current guiding section 3 can be increased, thereby improving the current-carrying capacity of the current guiding section 3, and thus improving the current-carrying capacity of the terminal post assembly 10. And there is no need to provide an additional terminal post assembly 10 to improve the current-carrying capacity, reducing the cost.

[0064] The following describes the battery according to an embodiment of the present utility model.

[0065] The battery according to an embodiment of the present utility model includes the above-mentioned top cover assembly 100.

[0066] According to the battery of the embodiment of the present utility model, by providing the above-mentioned top cover assembly 100 and the above-mentioned pole column assembly 10, the diversion section 3 penetrates through the top cover assembly 100, and the length of the diversion section 3 along the length direction of the top cover assembly 100 is greater than the length along the width direction of the top cover assembly 100. When the width of the diversion section 3 along the top cover assembly 100 remains unchanged, the cross-sectional area of the diversion section 3 can be increased, thereby improving the current-carrying capacity of the diversion section 3 and thus improving the current-carrying capacity of the pole column assembly 10. Moreover, there is no need to provide an additional pole column assembly 10 to improve the current-carrying capacity, reducing the cost.

[0067] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0068] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A pole assembly, characterized in that: For a top cover assembly, the pole assembly is passed through the top cover assembly and comprises: A guide section is provided through the top cover assembly, wherein the length of the guide section along the length direction of the top cover assembly is greater than the length along the width direction of the top cover assembly.

2. The pole assembly according to claim 1, characterized in that: The length of the guide section along the length direction of the top cover assembly is a, and the length of the guide section along the width direction of the top cover assembly is b, b≥4mm, 1≤a / b≤4.

3. The pole assembly according to claim 1, characterized in that: The projection profile of the guide section on the top cover assembly is elliptical, polygonal or racetrack-shaped.

4. The pole assembly according to claim 1, characterized in that: Also includes: A first connecting section is provided at one end of the guide section along the thickness direction of the top cover assembly and is connected to the guide section, and the first connecting section is suitable for being electrically connected to the pole group.

5. The pole assembly according to claim 4, characterized in that: The projection of the guide section on the first connecting section completely falls on the first connecting section, the length of the guide section along the length direction of the top cover assembly is a, the length of the first connecting section along the length direction of the top cover assembly is c, and a / c≤0.

8.

6. The pole assembly according to claim 4, characterized in that: Also includes: The second connecting section is arranged at one end of the guide section away from the first connecting section and connected to the guide section, and the second connecting section is suitable for passing through the connecting block of the top cover assembly and connected to the connecting block.

7. The pole assembly according to claim 6, characterized in that: The projection of the second connecting section on the flow guiding section completely falls on the flow guiding section.

8. The pole assembly according to claim 7, characterized in that: The projection contour of the second connecting section on the guide section is circular.

9. A top cover assembly, characterized in that: The invention comprises a pole assembly according to any one of claims 1 to 8.

10. A battery, characterized in that: Comprising a top cover assembly according to claim 9.

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