Battery cover plate and battery monomer

Abstract

The utility model belongs to the technical field of batteries, and discloses a battery cover plate and a battery monomer, the battery cover plate comprises a cover plate body, a post and a sealing ring, the cover plate body is provided with a mounting hole, the post comprises a post body and a support which are connected with each other, the post body is arranged in the mounting hole in a penetrating manner, and the sealing ring comprises a first sealing section and a second sealing section. The first sealing section is arranged on the column body in a sleeving mode and clamped between the side wall of the column body and the hole wall of the mounting hole, the second sealing section is provided with an annular groove, the annular groove, the first sealing section and the second sealing section are coaxial, the edge of one side of the annular groove is connected with the first sealing section, and the second sealing section is clamped between the cover plate body and the support. The vertex angle of the side, facing the support, of the edge of the mounting hole is located in the annular groove, so that the sealing reliability of the pole and the cover plate body is improved, and the service life of the battery monomer is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field especially relates to a battery cover plate and battery monomer. BACKGROUND

[0002] The sealing ring on the battery cover plate is an important part of the battery and is the key to ensuring the sealed connection between the pole and the cover plate body. In the prior art, the sealing ring is often divided into two sections, one end of which is clamped between the side wall of the pole body and the hole wall of the pole hole of the cover plate body, and the other end is clamped between the base of the pole and the cover plate body, thereby forming a sealed connection between the pole and the cover plate body.

[0003] However, in the above structure, the connection between the two sections of the sealing ring is pressed by the top corner of the pole hole edge, which can cause cracks or even breakage at the connection between the two sections of the sealing ring, greatly reducing the sealing performance of the sealing ring and affecting the sealing performance between the pole and the cover plate body, thereby shortening the service life of the battery.

[0004] Therefore, it is urgent to provide a battery cover plate and battery monomer to solve the above technical problems. UTILITY MODEL CONTENTS

[0005] The first purpose of the utility model is to provide a battery cover plate that can improve the sealing reliability of the pole and the cover plate body and has the effect of prolonging the service life of the battery monomer.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] The battery cover plate comprises:

[0008] The cover plate body is provided with a mounting hole;

[0009] The pole comprises a pole body and a support, the pole body is connected to the support, and the pole body is arranged in the mounting hole;

[0010] The sealing ring comprises a first sealing section and a second sealing section, the first sealing section is sleeved on the pole body and clamped between the side wall of the pole body and the hole wall of the mounting hole, the second sealing section is provided with an annular groove, the annular groove, the first sealing section and the second sealing section are coaxial, one side edge of the annular groove is connected to the first sealing section, the second sealing section is clamped between the cover plate body and the support, and the top corner of the edge of the mounting hole towards the support side is located in the annular groove.

[0011] Optionally, the groove bottom of the annular groove is a plane, and the plane is parallel to the side surface of the cover plate body towards the support;

[0012] Alternatively, the groove bottom of the annular groove is a slope, and the distance between the slope and the cover plate body gradually increases in the direction towards the first sealing section axis.

[0013] Optionally, the battery cover plate further comprises an electrically-conductive block, which is insulatedly connected to the side of the cover plate body away from the support, and the column is connected to the electrically-conductive block.

[0014] Optionally, the battery cover plate further comprises a first insulating member, which is arranged on the side of the cover plate body away from the support, and the electrically-conductive block is arranged on the side of the first insulating member away from the cover plate body, and the column is arranged in the first insulating member and connected to the electrically-conductive block.

[0015] Optionally, the first insulating member is provided with a receiving groove, and the electrically-conductive block is embedded in the receiving groove.

[0016] Optionally, the side wall of the electrically-conductive block is provided with a raised edge, and the raised edge protrudes out of the receiving groove.

[0017] Optionally, the side of the raised edge away from the electrically-conductive block is flush with the outer side wall of the receiving groove.

[0018] Optionally, the raised edge extends along the circumference of the electrically-conductive block and is connected end to end.

[0019] Optionally, the battery cover plate further comprises a second insulating member, which covers the surface of the side of the cover plate body facing the support, and the second insulating member is provided with a sunken groove on the side facing the cover plate body, the side wall of the sunken groove is provided with a flow-through hole, and the cover plate body is provided with a liquid injection hole at the position opposite to the sunken groove.

[0020] The second purpose of the utility model is to provide a battery monomer, the pole column and the cover plate body of the battery monomer have high sealing reliability, and therefore the battery monomer has long service life.

[0021] To achieve the purpose, the utility model adopts the following technical scheme:

[0022] The battery monomer comprises a battery cell, a battery shell and the above-mentioned battery cover plate, the battery cell is arranged in the battery shell, and the cover plate body is arranged at the opening of the battery shell.

[0023] The utility model has the advantages of:

[0024] The battery cover plate provided by the utility model, the first sealing section of the sealing ring is clamped between the side wall of the column and the hole wall of the mounting hole, the second sealing section of the sealing ring is provided with an annular groove, the annular groove, the first sealing section and the second sealing section are coaxial, one side edge of the annular groove is connected with the first sealing section, the second sealing section is clamped between the cover plate body and the support, the top corner of the edge of the mounting hole towards the support side is located in the annular groove, so that the connecting position of the first sealing section and the second sealing section avoids the top corner of the edge of the mounting hole towards the support side, the problem that the connecting position of the first sealing section and the second sealing section is extruded by the above-mentioned top corner is solved, and the probability of the crack even rupture problem of the connecting position of the first sealing section and the second sealing section is reduced, the battery cover plate has the effects of improving the sealing reliability of the pole and the cover plate body and prolonging the service life of the battery monomer. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is the explosion structure schematic view of the battery cover plate provided by the utility model embodiment one;

[0026] Figure 2 is the local section structure schematic view of the battery cover plate provided by the utility model embodiment one;

[0027] Figure 3 is Figure 2 the local enlarged view of A in the figure;

[0028] Figure 4 is the structure schematic view of the sealing ring provided by the utility model embodiment one;

[0029] Figure 5 is the section structure schematic view of the sealing ring provided by the utility model embodiment one;

[0030] Figure 6 is the section structure schematic view of the sealing ring provided by the utility model embodiment two.

[0031] In the figure:

[0032] 100, cover plate body; 110, mounting hole; 120, liquid injection hole; 200, pole; 210, column; 220, support; 300, sealing ring; 310, first sealing section; 320, second sealing section; 321, annular groove; 3211, plane; 3212, slope; 400, conductive block; 410, convex edge; 500, first insulating piece; 510, containing groove; 600, second insulating piece; 610, sink groove; 611, flow-through hole. DETAILED DESCRIPTION

[0033] The utility model will be described in further detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are merely used to explain the utility model and not to limit the utility model. In addition, it should be noted that only the parts related to the utility model are shown in the drawings for ease of description, not all the structures.

[0034] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0035] In the utility model, unless otherwise explicitly specified and limited, the first feature "on" or "below" the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0036] In the description of the embodiment, the terms "up", "down", "right", etc. orientation or position relationship is based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification of operation, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only used to distinguish in description and have no special meaning.

[0037] Embodiment one

[0038] The embodiment provides a battery cover plate, which can improve the sealing reliability of the pole and the cover plate body, and has the effect of prolonging the service life of the battery monomer.

[0039] Specifically, as Figures 1 to 5As shown, the battery cover plate comprises a cover plate body 100, a pole 200 and a sealing ring 300, wherein the cover plate body 100 is provided with a mounting hole 110, the pole 200 comprises a column body 210 and a support 220, the column body 210 is connected with the support 220, the column body 210 is arranged in the mounting hole 110, the sealing ring 300 comprises a first sealing section 310 and a second sealing section 320, the first sealing section 310 is sleeved on the column body 210 and is clamped between the side wall of the column body 210 and the hole wall of the mounting hole 110, the second sealing section 320 is provided with an annular groove 321, the annular groove 321, the first sealing section 310 and the second sealing section 320 are coaxial, one side edge of the annular groove 321 is connected with the first sealing section 310, and the second sealing section 320 is clamped between the cover plate body 100 and the support 220, and the top corner of the edge of the mounting hole 110 on the side facing the support 220 is located in the annular groove 321.

[0040] Based on the above design, the first sealing section 310 of the sealing ring 300 is clamped between the side wall of the column body 210 and the hole wall of the mounting hole 110, the second sealing section 320 of the sealing ring 300 is provided with the annular groove 321, the annular groove 321, the first sealing section 310 and the second sealing section 320 are coaxial, one side edge of the annular groove 321 is connected with the first sealing section 310, the second sealing section 320 is clamped between the cover plate body 100 and the support 220, and the top corner of the edge of the mounting hole 110 on the side facing the support 220 is located in the annular groove 321, so that the connection position (i.e. the edge of the annular groove 321) of the first sealing section 310 and the second sealing section 320 avoids the top corner of the edge of the mounting hole 110 on the side facing the support 220, solves the problem that the connection position of the first sealing section 310 and the second sealing section 320 is pressed by the above-mentioned top corner, and further reduces the probability that cracks or even ruptures occur at the connection position of the first sealing section 310 and the second sealing section 320, has the effects of improving the sealing reliability of the pole 200 and the cover plate body 100 and prolonging the service life of the battery monomer.

[0041] Optionally, as shown in the first aspect, Figures 1 to 5 the bottom of the annular groove 321 is a plane 3211, and the plane 3211 is parallel to the side surface of the cover plate body 100 facing the support 220, so as to ensure that the connection position of the first sealing section 310 and the second sealing section 320 avoids the top corner of the edge of the mounting hole 110 on the side facing the support 220.

[0042] Optionally, as shown in the first aspect, Figures 1 to 5As shown, the battery cover plate further comprises an electrically-conductive block 400, which is insulatedly connected to the side of the cover plate body 100 away from the support 220, and the post 210 is connected to the electrically-conductive block 400, thereby realizing the electrically-conductive connection between the post 200 and the electrically-conductive block 400, and the electrically-conductive block 400 is used to electrically connect to other electrically-conductive elements other than the battery monomer. Optionally, the electrically-conductive block 400 can be made of an electrically-conductive metal material such as aluminum block.

[0043] Further, as shown in Figures 1 to 5 the battery cover plate further comprises a first insulating piece 500, which is arranged on the side of the cover plate body 100 away from the support 220, and the electrically-conductive block 400 is arranged on the side of the first insulating piece 500 away from the cover plate body 100, and the post 210 is arranged through the first insulating piece 500 and connected to the electrically-conductive block 400, thereby realizing the insulated connection between the electrically-conductive block 400 and the cover plate body 100.

[0044] Further, as shown in Figures 1 to 5 the first insulating piece 500 is provided with a receiving groove 510, and the electrically-conductive block 400 is embedded in the receiving groove 510, and the design of the receiving groove 510 improves the stability and reliability of the connection between the first insulating piece 500 and the electrically-conductive block 400, thereby improving the reliability of the insulated connection between the electrically-conductive block 400 and the cover plate body 100.

[0045] Further, as shown in Figures 1 to 5 the side wall of the electrically-conductive block 400 is provided with a raised edge 410, which protrudes out of the receiving groove 510, and when the electrically-conductive block 400 and the first insulating piece 500 are disassembled, the raised edge 410 can be held to put the electrically-conductive block 400 into the receiving groove 510 or take the electrically-conductive block 400 out of the receiving groove 510, and it can be seen that the design of the raised edge 410 reduces the operation difficulty of putting the electrically-conductive block 400 into the receiving groove 510 or taking the electrically-conductive block 400 out of the receiving groove 510.

[0046] Optionally, as shown in Figures 1 to 5 the raised edge 410 extends along the circumference of the electrically-conductive block 400 and is connected at the head and tail, thereby facilitating the holding of the raised edge 410.

[0047] Optionally, as shown in Figures 1 to 5 the side of the raised edge 410 away from the electrically-conductive block 400 is flush with the outer side wall of the receiving groove 510, thereby improving the structural consistency of the electrically-conductive block 400 and the first insulating piece 500.

[0048] Optionally, as shown in Figures 1 to 5 the cover plate body 100 is provided with a liquid injection hole 120, thereby facilitating the injection of electrolyte into the battery shell through the liquid injection hole 120.

[0049] Optionally, as shown in Figures 1 to 5As shown, the battery cover plate further comprises a second insulating piece 600, which covers the surface of the cover plate body 100 on the side facing the support 220, i.e., the second insulating piece 600 covers the surface of the cover plate body 100 on the side away from the conductive block 400, which is the side facing the battery shell and the battery cell, and the arrangement of the second insulating piece 600 achieves the insulation of the cover plate body 100 from the battery shell and the insulation of the battery shell from the battery cell.

[0050] Further, as shown in Figures 1 to 5 As shown, the second insulating piece 600 is provided with a sink 610 on the side facing the cover plate body 100, and the liquid injection hole 120 is arranged opposite the sink 610, and the sidewall of the sink 610 is provided with a flow hole 611, so that when the electrolyte is injected into the battery shell, the electrolyte enters the battery shell through the liquid injection hole 120, the sink 610 and the flow hole 611. When the battery shell is shaken or the like, the electrolyte level fluctuates, and the sink 610 is designed to prevent the electrolyte from splashing onto the cover plate body 100 and causing adverse effects.

[0051] In this embodiment, the cover plate body 100 is an aluminum sheet, and the first insulating piece 500 and the second insulating piece 600 are injection molded parts.

[0052] In this embodiment, as shown in Figures 1 to 5 The mounting hole 110, the pole 200, the sealing ring 300, the first insulating piece 500 and the conductive block 400 are all two in number and one-to-one correspondence, one of the two poles 200 is a positive pole, and the other is a negative pole.

[0053] This embodiment also provides a battery monomer, which comprises a battery cell, a battery shell and the above-mentioned battery cover plate, the battery cell is arranged in the battery shell, and the cover plate body 100 is arranged at the opening of the battery shell. The battery monomer uses the above-mentioned battery cover plate, the probability of cracking or even breaking of the sealing ring 300 is low, which effectively guarantees the sealing between the pole 200 and the cover plate body 100, and the battery monomer has a long service life.

[0054] Embodiment two

[0055] This embodiment provides a battery cover plate, which differs from the battery cover plate provided in embodiment one in that:

[0056] As shown in Figures 1 to 5 Figures 1 to 5 Figures 1 to 5 Figure 1 Figure 6As shown, the bottom of the annular groove 321 is a slope surface 3212, and the distance between the slope surface 3212 and the cover plate body 100 gradually increases in the direction towards the axis of the first sealing section 310, so as to as far as possible expand the distance between the connecting position (i.e. the edge of the annular groove 321) of the first sealing section 310 and the second sealing section 320 and the top corner of the edge of the mounting hole 110 towards the side of the support 220, and reduce the probability of the edge of the annular groove 321 being pressed by the top corner, and provide reliable guarantee for the sealing reliability between the pole 200 and the cover plate body 100.

[0057] The remaining structure of the battery cover plate provided by the embodiment is the same as that of the first embodiment, and will not be described again.

[0058] Obviously, the above embodiments of the utility model are only examples for clearly illustrating the utility model, and are not the limitation of the embodiments of the utility model. For ordinary skilled in the art, various obvious changes, re-adjustment and replacement can be made without departing from the protection scope of the utility model. Here, it is unnecessary and impossible to enumerate all the embodiments. Any modification, equivalent replacement and improvement within the spirit and principle of the utility model should be included in the protection scope of the utility model claim.

Claims

1. A battery cover plate, characterized by include: A cover plate body (100), wherein the cover plate body (100) is provided with a mounting hole (110); A pole (200), the pole (200) comprising a column (210) and a support (220), the column (210) being connected to the support (220), and the column (210) being passed through the mounting hole (110); A sealing ring (300), the sealing ring (300) comprising a first sealing section (310) and a second sealing section (320), the first sealing section (310) being sleeved on the column (210) and clamped between the side wall of the column (210) and the hole wall of the mounting hole (110), the second sealing section (320) being provided with an annular groove (321), the annular groove (321), the first sealing section (310) and the second sealing section (320) being coaxial, a side edge of the annular groove (321) being connected to the first sealing section (310), the second sealing section (320) being clamped between the cover plate body (100) and the support (220), the top corner of the edge of the mounting hole (110) facing the side of the support (220) being located in the annular groove (321).

2. The battery cover plate of claim 1, wherein, The bottom of the annular groove (321) is a plane (3211), and the plane (3211) is parallel to a surface of the cover plate body (100) facing the support (220); Alternatively, the bottom of the annular groove (321) is a slope (3212), and the distance between the slope (3212) and the cover plate body (100) gradually increases in a direction toward the axis of the first sealing section (310).

3. The battery cover plate according to claim 1 or 2, characterized in that, The battery cover plate further comprises a conductive block (400), the conductive block (400) being insulated and connected to a side of the cover plate body (100) facing away from the support (220), and the column (210) being connected to the conductive block (400).

4. The battery cover plate of claim 3, wherein, The battery cover further comprises a first insulating member (500), the first insulating member (500) being arranged on a side of the cover body (100) facing away from the support (220), the conductive block (400) being arranged on a side of the first insulating member (500) facing away from the cover body (100), and the column (210) being passed through the first insulating member (500) and connected to the conductive block (400).

5. The battery cover plate of claim 4, wherein, The first insulating member (500) is provided with a receiving groove (510), and the conductive block (400) is embedded in the receiving groove (510).

6. The battery cover plate of claim 5, wherein, A convex edge (410) is provided on the side wall of the conductive block (400), and the convex edge (410) extends out of the accommodating groove (510).

7. The battery cover plate of claim 6, wherein, The side of the convex edge (410) facing away from the conductive block (400) is flush with the outer side wall of the accommodating groove (510).

8. The battery cover plate of claim 6, wherein, The convex edge (410) extends along the circumference of the conductive block (400) and is connected end to end.

9. The battery cover plate of claim 1 or 2, wherein, The battery cover plate further comprises a second insulating piece (600) covering the surface of the side of the cover plate body (100) facing the support (220), and the second insulating piece (600) is provided with a sunken groove (610) on the side facing the cover plate body (100), the side wall of the sunken groove (610) is provided with a flow-through hole (611), and the cover plate body (100) is provided with a liquid injection hole (120) at a position opposite to the sunken groove (610).

10. A battery cell, characterized by The battery cover plate comprises a battery cell, a battery shell and the battery cover plate according to any one of claims 1-9, the battery cell is arranged in the battery shell, and the cover plate body (100) is arranged on the opening of the battery shell.

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