CN216749964U - Current collector structure of alkaline battery - Google Patents
Current collector structure of alkaline battery Download PDFInfo
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- CN216749964U CN216749964U CN202220271498.5U CN202220271498U CN216749964U CN 216749964 U CN216749964 U CN 216749964U CN 202220271498 U CN202220271498 U CN 202220271498U CN 216749964 U CN216749964 U CN 216749964U
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- sealing ring
- negative electrode
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- current collector
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Abstract
The utility model provides an alkaline battery current collector structure, which comprises a sealing ring, wherein the sealing ring comprises a sealing ring body and a central column positioned at the central position of the sealing ring body, the central axis of the sealing ring body is coincided with the central axis of the central column, the axial thickness of the sealing ring body is smaller than that of the central column, and the sealing ring body is positioned on the radial outer side of one end, facing a negative electrode cover, of the central column. According to the utility model, the space for filling the positive electrode material and the negative electrode material in the battery is enlarged by moving the sealing ring body upwards.
Description
Technical Field
The utility model relates to the field of battery components, in particular to a current collector structure of an alkaline battery.
Background
Currently, batteries are widely used in various fields due to their characteristics of environmental protection and safety. The current collector is an important component in the battery, and mainly comprises a sealing ring, a current collecting nail and a negative electrode cover. The current collectors are mainly used in the battery, namely, the current collectors collect and convey current generated by the negative electrode part in the battery outwards, the current collectors play a role in sealing to seal an opening at the bottom end of the battery shell, and the current collectors play a role in safety and explosion prevention to prevent the battery from exploding due to overhigh internal gas pressure.
The current collecting nail of the current collector of the alkaline battery is provided with a head part and a needle body which are connected, the head part is fixedly connected with a negative pole cover, the middle part of a sealing ring body is provided with a central column, the central column is provided with a central through hole, the needle body of the current collecting nail penetrates through the central through hole of the sealing ring and is in interference fit with the central through hole of the sealing ring, and the head part of the current collecting nail is clamped between the negative pole cover and the central column. Because the sealing ring body of the current collector of the existing alkaline battery is positioned on the outer side of the middle part of the central column, and a larger height difference exists between the sealing ring body and the negative electrode cover, a sealing structure formed by the sealing ring and the negative electrode cover occupies a higher height of the battery, and the space for filling a positive electrode material and a negative electrode material in the battery is compressed. In addition, the upper end face of the existing central column is flush with the upper end face of the needle part of the current collecting nail, so that the head part of the current collecting nail not only needs to occupy a section of height of the battery, but also the volume of a cavity between the sealing ring and the negative pole cover is far larger than that of the head part of the current collecting nail, and space waste is caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a current collector structure of an alkaline battery, which enlarges the space for filling a positive electrode material and a negative electrode material in the battery by upwards moving a sealing ring body.
The utility model provides an alkaline battery current collector structure, includes the sealing washer, the sealing washer includes the sealing washer body and is located the center post of the central point department of sealing washer body, the central axis of sealing washer body with the central axis of center post coincides mutually, the axial thickness of sealing washer body is less than the axial thickness of center post, the sealing washer body is located the radial outside of the one end towards the negative pole lid of center post.
Compared with the sealing ring body positioned in the middle of the central column in the prior art, the sealing ring body is moved upwards, so that the space for filling the positive electrode material and the negative electrode material in the battery is enlarged.
Preferably, an end face of the sealing ring body facing the negative electrode cover is flush with an end face of the central column facing the negative electrode cover.
Preferably, the axial distance between the end face of one end, facing the negative electrode cover, of the sealing ring body and the inner bottom surface of the negative electrode cover is controlled to be 0-1 mm.
Preferably, the seal ring body is provided with a collecting nail, the collecting nail is provided with a head part and a needle body which are connected, the head part is fixedly connected with the inner bottom surface of the negative electrode cover, the center column is provided with a center through hole, the needle body penetrates through the center through hole and is in interference fit with the center through hole, one end surface of the seal ring body facing the negative electrode cover and one end surface of the center column facing the negative electrode cover are in contact fit with the inner bottom surface of the negative electrode cover, and an embedding groove for embedding the head part of the collecting nail is formed in the contact surface of the seal ring and the negative electrode cover. On the one hand, the waste of space is avoided, and simultaneously, the one end terminal surface of the sealing washer body towards the negative pole lid with the one end terminal surface of the center post towards the negative pole lid all with the interior bottom surface contact cooperation of negative pole lid, it is right the middle part of negative pole lid supports, avoids it to receive external pressure deformation. Furthermore, the thickness of the sealing ring body is controlled to be 1.0-1.2 mm, and compared with the thickness of the sealing ring body which is controlled to be 0.5-0.6 mm in the prior art, the thickness of the sealing ring body is increased, and the overall stability of the sealing ring is improved.
Preferably, the sealing washer body undercut forms the bottom arch, the bottom arch is located the radial outside of center post set up the annular explosion-proof groove that loses heart in the bottom arch, the central axis in explosion-proof groove that loses heart with the central axis of sealing washer body coincides mutually, the negative pole is covered and has been seted up the hole of losing heart, lose heart the hole with it communicates mutually to lose heart explosion-proof groove. The air leakage explosion-proof groove is arranged on the bottom protrusion, when the current collecting nail is inserted into the central through hole of the central column, the air leakage explosion-proof groove is not easy to tear and the central column is not easy to break, the diameter of the air leakage explosion-proof groove is larger, the air leakage groove is longer, the air leakage amount is larger, and the explosion risk is reduced. Furthermore, the air leakage explosion-proof groove is arranged at the position of the raised wave crest at the bottom.
Preferably, the seal ring is installed in an upper end opening of the positive steel shell, the negative cover is located at the upper end of the seal ring, the periphery of the negative cover extends outwards in the radial direction to form a negative cover outer edge portion, a flanging is arranged at the peripheral edge of the seal ring, and the flanging sequentially comprises a lower wrapping section attached to the lower surface of the negative cover outer edge portion, a side wrapping section attached to the peripheral surface of the negative cover outer edge portion and an upper wrapping section attached to the upper surface of the negative cover outer edge portion from bottom to top; the peripheral wall of the positive steel shell is inwards recessed in the radial direction, so that a flange is formed on the inner peripheral wall of the positive steel shell, the flange is distributed along the inner circumference of the positive steel shell, the sealing ring is located above the flange, the bottom surface of the lower wrapping section is abutted against the flange, and the positive steel shell extends upwards from the flange to the tail end of the upper wrapping section of the flange along the outer wall of the flange. The periphery of the cathode cover extends outwards along the radial direction to form the outer edge part of the cathode cover, compared with the outer edge part of the cathode cover with the vertical flanging, the thickness of the flanging of the sealing ring is reduced, meanwhile, the anode steel shell used for coating the flanging of the sealing ring is made of less material, the material of the sealing ring and the anode steel shell is reduced, and the cost is saved; simultaneously, the negative pole lid with the sealing washer can follow respectively the negative pole covers the lower surface of outer edge portion, outer peripheral face and upper surface and compresses tightly it and realize the good sealed of battery, has reduced right the negative pole lid the sealing washer and anodal box hat three is at the requirement of radial ascending size cooperation and laminating effect.
Preferably, the height of the flange in the radial direction of the positive steel shell (referred to as the radial height of the flange) is controlled to be 0.5-1.5 mm. Compared with the radial height of the flange of the existing alkaline battery which is usually set to be 0.3 mm, the radial height of the flange is higher, so that the contact section of the bottom surface of the lower surrounding section and the flange is longer, the sealing performance of the battery is improved, and meanwhile, the support of the sealing ring is more stable. Furthermore, the radial height of the flange is controlled to be 1.0-1.5 mm, the bottom surface of the lower wrapping section and the contact section of the flange are further lengthened, and the battery sealing performance is better.
Preferably, the outer edge of the negative electrode cover is flat or wavy. Further, when the outer portion of following of negative-pole cover is the wave plate shape, the outer thickness control of the outer portion of following of negative-pole cover is at 0.35 ~ 1mm, when the outer portion of following of negative-pole cover is the wave plate shape, can increase the outer portion of following of negative-pole cover with area of contact between the sealing washer improves sealed effect, simultaneously, also avoids the outer portion of following thickness of negative-pole cover is too thick, excessively increases the materials of sealing washer and anodal box hat.
Drawings
FIG. 1 is a perspective view of the structure of a collector of an alkaline battery according to example 1;
FIG. 2 is a perspective view of the structure of the current collector of the alkaline battery of example 2;
wherein, the chain line in fig. 1 and fig. 2 is the central axis of the seal ring body.
Detailed Description
The following detailed description of embodiments of the alkaline battery seal ring of the present invention will be made with reference to the accompanying drawings:
example 1
As shown in fig. 1, the alkaline battery current collector structure includes a sealing ring 30, where the sealing ring 30 includes a sealing ring body 31 and a central column 32 located at a central position of the sealing ring body 31, a central axis of the sealing ring body 31 coincides with a central axis of the central column 32, an axial thickness of the sealing ring body 31 is smaller than an axial thickness of the central column 32, and the sealing ring body 31 is located radially outside an end of the central column 32 facing a negative electrode cover 40;
the sealing ring 30 is installed in an upper end opening of the positive steel shell 10, the negative electrode cover 40 is located at the upper end of the sealing ring 30, the periphery of the negative electrode cover 40 extends outwards in the radial direction to form a negative electrode cover outer edge portion 41, a flanging 33 is arranged at the periphery of the sealing ring, and the flanging 33 sequentially comprises a lower wrapping section 331 attached to the lower surface of the negative electrode cover outer edge portion 41, a side wrapping section 332 attached to the outer peripheral surface of the negative electrode cover outer edge portion 41 and an upper wrapping section 333 attached to the upper surface of the negative electrode cover outer edge portion 41 from bottom to top; the peripheral wall of the positive steel shell 10 is recessed radially inwards to form a flange 20 on the inner peripheral wall of the positive steel shell, the flange 20 is distributed along the inner periphery of the positive steel shell 10, the sealing ring is positioned above the flange 20, the bottom surface of the lower wrapping section 331 is abutted with the flange 20, and the positive steel shell 10 extends upwards from the flange 20 along the outer wall of the flange 33 to the tail end of the upper wrapping section 333 of the flange;
the outer edge part of the negative electrode cover is flat.
Example 2
The alkaline battery current collector structure of example 2 differs from that of example 1 in that: the outer edge part of the negative electrode cover is in a wave plate shape.
Both example 1 and example 2 have the following advantages: the sealing ring body 31 is located on the radial outer side of one end, facing the negative electrode cover 40, of the central column 32, and compared with the sealing ring body 31 located in the middle of the central column 32 in the prior art, the sealing ring body 31 is moved upwards, so that the space for filling the positive electrode material and the negative electrode material in the battery is enlarged.
In addition, the outer periphery of the negative electrode cover 40 of the embodiments 1 and 2 extends outwards in the radial direction to form the negative electrode cover outer edge portion 41, so that compared with the existing negative electrode cover outer edge portion with the vertical flanging, the thickness of the flanging 33 of the sealing ring 30 is reduced, meanwhile, the anode steel shell material used for the flanging 33 covering the sealing ring is less, the materials of the sealing ring 30 and the anode steel shell 10 are reduced, and the cost is saved; meanwhile, the negative electrode cover 40 and the sealing ring 30 can be pressed tightly from the lower surface, the peripheral surface and the upper surface of the outer edge portion 41 of the negative electrode cover to realize good sealing of the battery, so that the requirements on the radial size matching and the fitting effect of the negative electrode cover, the sealing ring 30 and the positive steel shell 10 are reduced.
It should be noted that, the negative electrode cover 40 of the present invention may be, but is not limited to, a negative electrode cover outer edge portion 41 formed by extending the outer circumference of the negative electrode cover radially outward, and an existing negative electrode cover outer edge portion having a vertical flange may also be used.
The alkaline battery current collector structures of example 1 and example 2 were each modified as follows:
(1) the end surface of the sealing ring body 31 facing the negative electrode cover 40 is flush with the end surface of the central column 32 facing the negative electrode cover 40.
(2) The axial distance between the orientation of the sealing ring body 31 and the one end terminal surface of the negative electrode cover 40 and the inner bottom surface of the negative electrode cover 40 is controlled to be 0-1 mm, and compared with the prior art that the axial distance between the orientation of the sealing ring body 31 and the one end terminal surface of the negative electrode cover 40 and the inner bottom surface of the negative electrode cover 40 is usually 2mm, the axial distance between the orientation of the sealing ring body 31 and the one end terminal surface of the negative electrode cover 40 and the inner bottom surface of the negative electrode cover 40 is shorter. Of course, the end surface of the seal ring body 31 facing the negative electrode cover 40 may also be higher or slightly lower than the end surface of the center post 32 facing the negative electrode cover 40.
(3) The seal ring body 31 is provided with a current collecting nail 50, the current collecting nail 50 is provided with a head 51 and a needle body 52 which are connected, the head 51 is fixedly connected with the inner bottom surface of the negative electrode cover 40, the center column 32 is provided with a center through hole, the needle body 52 penetrates through the center through hole and is in interference fit with the center through hole, one end surface of the seal ring body 31 facing the negative electrode cover 40 and one end surface of the center column 32 facing the negative electrode cover 40 are both in contact fit with the inner bottom surface of the negative electrode cover 40, and an embedding groove 36 for embedding the head of the current collecting nail is arranged on the contact surface of the seal ring 30 and the negative electrode cover 40. At this moment, the axial distance between the end face of the seal ring body 31 facing the negative electrode cover 40 and the inner bottom surface of the negative electrode cover 40 is 0, so that on one hand, the waste of space is avoided, and meanwhile, the end face of the seal ring body 31 facing the negative electrode cover 40 and the end face of the center post 32 facing the negative electrode cover 40 are in contact fit with the inner bottom surface of the negative electrode cover 40, so that the middle part of the negative electrode cover 40 is supported, and the deformation caused by external pressure is avoided. Further, the thickness A of the sealing ring body 31 is controlled to be 1.0-1.2 mm, and compared with the thickness A of the sealing ring body which is controlled to be 0.5-0.6 mm in the prior art, the thickness of the sealing ring body 31 is increased, and the overall stability of the sealing ring is improved. Of course, a gap may also be left between the end surface of the sealing ring body 31 facing the negative electrode cap 40 and the end surface of the central pillar 32 facing the negative electrode cap 40 and the inner bottom surface of the negative electrode cap 40, and the contact surface of the sealing ring 30 and the negative electrode cap 40 may not be provided with the embedding groove 36 into which the head of the current collecting nail is embedded.
(4) Sealing washer body 31 undercut forms bottom arch 34, bottom arch 34 is located the radial outside of center post 32 set up the annular explosion-proof groove 35 that loses heart on the bottom arch 34, the central axis in explosion-proof groove 35 that loses heart with sealing washer body 31's the central axis coincides mutually, negative pole cover 40 is last to have seted up out-of-air hole 42, out-of-air hole 42 with explosion-proof groove 35 that loses heart is linked together. The air leakage and explosion-proof groove 35 is arranged on the bottom bulge 34, when the current collecting nail 50 is inserted into the central through hole of the central column, the air leakage and explosion-proof groove 35 is not easy to tear and the central column is not easy to break, and the diameter of the air leakage and explosion-proof groove 35 is larger, the air leakage groove is longer, the air leakage amount is also larger, and the explosion risk is reduced. Further, the air leakage and explosion prevention groove 35 is formed in the position of the wave crest of the bottom protrusion 34. Of course, the air leakage and explosion-proof groove 35 can also be opened on the side wall of the bottom protrusion 34, or any position of the sealing ring body 31 can be used.
(5) The radial height D of the flange 20 is controlled to be 0.5-1.5 mm. Compared with the radial height D of the flange 20 of the existing alkaline battery which is usually set at 0.3 mm, the radial height D of the flange 20 is higher, so that the contact section of the bottom surface of the lower surrounding section 331 and the flange 20 is longer, the sealing performance of the battery is improved, and meanwhile, the support of the sealing ring 30 is more stable. Furthermore, the radial height D of the flange 20 is controlled to be 1.0-1.5 mm, the contact section between the bottom surface of the lower wrapping section 331 and the flange 20 is further lengthened, and the battery sealing performance is better. Of course, the radial height of the flange 20 may be less than 0.5mm, but the sealing effect is reduced.
(6) The thickness T 'of the outer edge part 41 of the negative electrode cover is controlled to be 0.35-1 mm, the phenomenon that the thickness T' of the outer edge part 41 of the negative electrode cover is too thick is avoided, and materials of the sealing ring 30 and the positive steel shell 10 are excessively increased.
The present invention shall be understood to include all those skilled in the art to which the present invention pertains, and all those simple deductions and substitutions can be made without departing from the spirit of the present invention.
Claims (10)
1. The utility model provides an alkaline battery current collector structure, includes the sealing washer, the sealing washer includes the sealing washer body and is located the center post of the central point department of putting of sealing washer body, the central axis of sealing washer body with the central axis of center post coincides mutually, the axial thickness of sealing washer body is less than the axial thickness of center post, its characterized in that: the sealing ring body is located on the radial outer side of one end, facing the negative pole cover, of the central column.
2. The alkaline battery current collector structure according to claim 1, characterized in that: the end face of one end, facing the negative electrode cover, of the sealing ring body is flush with the end face of one end, facing the negative electrode cover, of the central column.
3. The alkaline battery current collector structure according to claim 1, characterized in that: the axial distance between the end face of one end of the sealing ring body, which faces the negative electrode cover, and the inner bottom surface of the negative electrode cover is controlled to be 0-1 mm.
4. The alkaline battery current collector structure according to claim 1, characterized in that: the sealing ring is characterized in that the sealing ring body is provided with a flow collecting nail, the flow collecting nail is provided with a head part and a needle body which are connected, the head part is fixedly connected with the inner bottom surface of the negative electrode cover, the center post is provided with a center through hole, the needle body penetrates through the center through hole and is in interference fit with the center through hole, one end surface of the sealing ring body, which faces the negative electrode cover, and one end surface of the center post, which faces the negative electrode cover, are in contact fit with the inner bottom surface of the negative electrode cover, and an embedding groove for embedding the head part of the flow collecting nail is formed in the contact surface of the sealing ring and the negative electrode cover.
5. The current collector structure for alkaline batteries according to claim 4, characterized in that: the thickness of the sealing ring body is controlled to be 1.0-1.2 mm.
6. The alkaline battery current collector structure according to claim 1, characterized in that: the bottom of the downward sunken formation of sealing washer body is protruding, the bottom is protruding to be located the radial outside of center post set up the annular explosion-proof groove that loses heart in the bottom arch, the central axis in explosion-proof groove that loses heart with the central axis of sealing washer body coincides mutually, the negative pole is covered and has been seted up disappointing hole, disappointing hole with explosion-proof groove that loses heart communicates mutually.
7. The alkaline battery current collector structure according to claim 6, characterized in that: the air leakage explosion-proof groove is formed in the position of the wave crest protruding from the bottom.
8. The alkaline battery current collector structure according to claim 1, characterized in that: the sealing ring is installed in an opening at the upper end of the positive steel shell, the negative cover is positioned at the upper end of the sealing ring, the periphery of the negative cover extends outwards along the radial direction to form a negative cover outer edge part, a flanging is arranged at the periphery edge of the sealing ring, and the flanging sequentially comprises a lower wrapping section attached to the lower surface of the negative cover outer edge part, a side wrapping section attached to the outer peripheral surface of the negative cover outer edge part and an upper wrapping section attached to the upper surface of the negative cover outer edge part from bottom to top; the peripheral wall of the positive steel shell is radially inwards recessed so as to form a flange on the inner peripheral wall of the positive steel shell, the flanges are distributed along the inner circumference of the positive steel shell, the sealing ring is positioned above the flange, the bottom surface of the lower wrapping section is abutted with the flange, and the positive steel shell extends upwards from the flange to the tail end of the upper wrapping section of the flange along the outer wall of the flange.
9. The alkaline battery current collector structure according to claim 8, wherein: the height of the flange in the radial direction of the positive electrode is controlled to be 1.0-1.5 mm.
10. The alkaline battery current collector structure according to claim 8, wherein: the outer edge part of the cathode cover is in a flat plate shape or a wavy plate shape; the thickness of the outer edge part of the negative electrode cover is controlled to be 0.35-1 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220271498.5U CN216749964U (en) | 2022-02-10 | 2022-02-10 | Current collector structure of alkaline battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220271498.5U CN216749964U (en) | 2022-02-10 | 2022-02-10 | Current collector structure of alkaline battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216749964U true CN216749964U (en) | 2022-06-14 |
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ID=81918156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220271498.5U Active CN216749964U (en) | 2022-02-10 | 2022-02-10 | Current collector structure of alkaline battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216749964U (en) |
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2022
- 2022-02-10 CN CN202220271498.5U patent/CN216749964U/en active Active
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