CN214068784U - Overcharge safety protection mechanism for power battery cap - Google Patents
Overcharge safety protection mechanism for power battery cap Download PDFInfo
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- CN214068784U CN214068784U CN202120043852.4U CN202120043852U CN214068784U CN 214068784 U CN214068784 U CN 214068784U CN 202120043852 U CN202120043852 U CN 202120043852U CN 214068784 U CN214068784 U CN 214068784U
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- protection mechanism
- power battery
- safety protection
- annular portion
- battery cap
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model discloses a power battery cap overcharge safety protection mechanism, which comprises a body, the body sets up to the column, and it includes body outward flange, body annular portion and body center, and body annular portion arranges in between body outward flange and the body center, the body center is provided with the cylindricality arch that thickness is greater than body outward flange and body annular portion, at least a set of strengthening rib has been seted up to circumference in the body annular portion. Protection mechanism be provided with at least a set of strengthening rib for protection mechanism body has certain rigidity, in for battery charging process, can turn over in the twinkling of an eye when making pressure rise to a definite value, does not have the phenomenon of striking sparks, consequently, the product is safer, promotes all model power battery security performances.
Description
Technical Field
The utility model relates to a power battery, concretely relates to power battery cap overcharge safety protection mechanism.
Background
If overcharge occurs in the rapid charging process of the power battery, the internal pressure of the power battery gradually rises, when the internal pressure rises to the turning pressure of the overcharge device, the inside of the battery turns over, and the conventional protection device, as shown in fig. 1, gradually turns over the inside of the battery in the gradual rising process of the internal pressure, so that discharge arc is easily generated in the gradual turning process, namely, ignition is performed, and potential safety hazards exist.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: to the problem of the above-mentioned prior art, the utility model aims at providing a power battery block overcharge safety protection mechanism.
The technical scheme is as follows: the utility model discloses a power battery block overcharge safety protection mechanism, which comprises a body, the body sets up to the column, and it includes body outward flange, body annular portion and body center, and body annular portion arranges in between body outward flange and the body center, the body center is provided with the cylindricality arch that thickness is greater than body outward flange and body annular portion, at least a set of strengthening rib has been seted up to circumference in the body annular portion.
Further, the method comprises the following steps:
the annular part of the body and the outer edge of the body are both upwarped relative to the center of the body
Further, the method comprises the following steps:
the body includes the upper surface and with the lower surface that the upper surface corresponds, the strengthening rib sets up to follow the protruding muscle of lower surface to upper surface.
Further, the method comprises the following steps:
the reinforcing ribs are arranged to be recessed in the grooves on the lower surface of the body.
Further, the method comprises the following steps:
the cross section of the reinforcing rib is in a slope shape, and the upper surface of the body where the reinforcing rib is located is higher than the upper surfaces of the bodies near the two sides of the reinforcing rib.
Further, the method comprises the following steps:
the outer edge of the body is thickened and assembled at the negative pole of the power battery cap.
Further, the method comprises the following steps:
the outer edge of the body and the cathode of the power battery cover cap are assembled in a welding mode.
Has the advantages that: compared with the prior art, the utility model, it is showing the advantage and is: protection mechanism be provided with at least a set of strengthening rib for protection mechanism body has certain rigidity, in for battery charging process, can turn over in the twinkling of an eye when making pressure rise to a definite value, does not have the phenomenon of striking sparks, consequently, the product is safer, promotes all model power battery security performances.
Drawings
FIG. 1 is a schematic structural view of a prior art protection mechanism;
fig. 2 is a schematic structural diagram of the protection mechanism of the present invention;
fig. 3 is an internal cross-sectional view of the protection mechanism of the present invention;
fig. 4 is a cross-sectional view of the protection mechanism of the present invention;
fig. 5 is a cross-sectional view of the protection mechanism according to the present invention after being turned over;
fig. 6 is an assembly view of the protection mechanism of the present invention.
Detailed Description
The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description. It should be understood that the structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any structure modification, ratio relationship change or size adjustment should still fall within the scope covered by the technical content disclosed in the present invention without affecting the function and the achievable purpose of the present invention. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.
As shown in fig. 2-4, the utility model discloses a power battery cap overcharge safety protection mechanism, including body 1, body 1 sets up to the column, and it includes body outward flange 11, body annular portion 12 and body center 13 from outside to inside in proper order, and body annular portion 12 is arranged in between body outward flange 11 and body center 13, is provided with the cylindricality arch 2 that thickness is greater than body outward flange 11 and body annular portion 12 on the body center 13, and arch 2 is integrated into one piece with other parts of body 1. At least one set of reinforcing ribs 3 is circumferentially arranged on the annular part 12 of the body. The annular portion of body and the body outward flange of this mechanism of this embodiment all present the upwarp state for the body center, promptly: if the bottom surface of the center of the body is used as a base surface, the height of the outer edge of the body and the height of the annular part of the body are a certain distance relative to the base surface, the bulge at the center of the body can sink to other parts of the body, and the full contact with a battery can be realized, so that when charging overvoltage occurs, the bulge 2 plays a role of turning over and then conducting. As shown in fig. 5, which is a sectional view after being turned up, the protrusion 2 and the body ring portion are turned up by the pressure.
At least one group of reinforcing ribs 3 are arranged on the annular upper circumference between the bulge 2 and the outer edge 11 of the body. The body 1 comprises an upper surface 14 and a lower surface 15 corresponding to the upper surface 14, the reinforcing rib 3 can be provided as a convex rib 31 protruding from the lower surface 15 to the upper surface 14, the convex rib is in a slope shape when viewed from the cross section, the reinforcing rib is a groove when viewed from the lower surface, and the upper surface of the body near two sides of the reinforcing rib 3 is lower than the reinforcing rib.
In the embodiment, the reinforcing ribs are arranged in 1-3 groups in the circumferential direction from the outer edge of the body to the protrusion.
The power battery cap overcharge safety protection is that under the overcharge condition appears in the power battery quick charge process, the internal pressure of power battery can rise gradually, because power battery cap overcharge safety protection structural design adds the curved muscle, make the product have certain rigidity, can turn over in the twinkling of an eye when internal pressure rises to overcharge device and turns over the pressure, turn over the back and with negative pole outer pressing plate direct contact, make power battery just, the negative pole switches on through the block and forms the return circuit, and anodal fuse device that has, thereby play the protection to single power battery not explode, not catch fire, the security performance is higher.
As shown in fig. 6, in order to be more firmly assembled with the negative electrode 100 of the battery cap, the outer edge 11 of the body 1 is thickened, and the assembly method can be welding. Protection mechanism mountable on the power battery of all types, greatly promote all model power battery security performance.
The invention has been described in terms of preferred embodiments, but is not intended to be limited to the embodiments, and it is intended that all technical equivalents and equivalents that can be obtained therefrom fall within the scope of the invention.
Claims (7)
1. The utility model provides a power battery cap overcharge safety protection mechanism, a serial communication port, which comprises a body, the body sets up to the column, and it includes body outward flange, body annular portion and body center, and body annular portion arranges in between body outward flange and the body center, the body center is provided with the cylindricality arch that thickness is greater than body outward flange and body annular portion, at least a set of strengthening rib has been seted up to circumference in the body annular portion.
2. The power battery cap overcharge safety protection mechanism of claim 1, wherein the body annular portion and the body outer edge are both raised relative to the body center.
3. The power battery cap overcharge safety protection mechanism of claim 1, wherein the body includes an upper surface and a lower surface corresponding to the upper surface, and the reinforcement rib is provided as a protruding rib protruding from the lower surface to the upper surface.
4. The power battery cap overcharge safety protection mechanism of claim 3, wherein the reinforcing rib is configured as a groove recessed in the lower surface of the body.
5. The power battery cap overcharge safety protection mechanism of claim 4, wherein the cross-section of the stiffener presents a slope shape, and the upper surface of the body where the stiffener is located is higher than the upper surfaces of the body near the two sides of the stiffener.
6. The power cell cap overcharge safety protection mechanism of claim 1, wherein the outer edge of the body is thickened and assembled at the negative pole of the power cell cap.
7. The power battery cap overcharge safety protection mechanism of claim 6, wherein the assembly of the outer edge of the body and the negative electrode of the power battery cap is welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120043852.4U CN214068784U (en) | 2021-01-08 | 2021-01-08 | Overcharge safety protection mechanism for power battery cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120043852.4U CN214068784U (en) | 2021-01-08 | 2021-01-08 | Overcharge safety protection mechanism for power battery cap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214068784U true CN214068784U (en) | 2021-08-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120043852.4U Active CN214068784U (en) | 2021-01-08 | 2021-01-08 | Overcharge safety protection mechanism for power battery cap |
Country Status (1)
| Country | Link |
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| CN (1) | CN214068784U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023050236A1 (en) * | 2021-09-29 | 2023-04-06 | 宁德时代新能源科技股份有限公司 | Pressure relief mechanism, battery cell, battery, electrical apparatus, and manufacturing method therefor |
-
2021
- 2021-01-08 CN CN202120043852.4U patent/CN214068784U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023050236A1 (en) * | 2021-09-29 | 2023-04-06 | 宁德时代新能源科技股份有限公司 | Pressure relief mechanism, battery cell, battery, electrical apparatus, and manufacturing method therefor |
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