CN211455813U - Nickel-hydrogen battery with high-efficient pressure release structure - Google Patents
Nickel-hydrogen battery with high-efficient pressure release structure Download PDFInfo
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- CN211455813U CN211455813U CN201922502803.8U CN201922502803U CN211455813U CN 211455813 U CN211455813 U CN 211455813U CN 201922502803 U CN201922502803 U CN 201922502803U CN 211455813 U CN211455813 U CN 211455813U
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- pressure relief
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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
Abstract
A nickel-metal hydride battery having a high-efficiency pressure relief structure includes: cell, shell and pressure release closing cap. The shell is of a cylindrical structure with an opening at one side, a positioning groove is formed in the opening position of the shell, and the battery cell is accommodated in the shell; the pressure release closing cap includes the current-collecting shaft, the tray, reed and block, a plurality of pressure release holes have been seted up on the block, the block cover is located on the tray, and the edge of block and tray all inlays in the constant head tank, the reed sets up between block and tray, seted up the thru hole on the tray, keep off a groove and a plurality of ventilative groove, a plurality of ventilative grooves encircle and keep off a groove setting, and each ventilative groove all with keep off a groove intercommunication, the thru hole with keep off a groove intercommunication, the current-collecting shaft wears to establish the thru hole and with electric core butt. The pressure relief structure is added at the position of the pressure relief sealing cover, when the internal pressure rises due to the battery failure, the pressure relief sealing cover is automatically started to dredge the internal high-pressure gas, the battery is protected, the battery is prevented from being expanded and exploded, and the safety performance of the nickel-hydrogen battery is improved.
Description
Technical Field
The utility model relates to a battery especially relates to a nickel-metal hydride battery with high-efficient pressure release structure.
Background
Nickel-metal hydride batteries are found everywhere in our lives. Such as light fixtures, portable instruments, electronic toys, and the like. Because the error that exists in user's maloperation and the battery production course of working can lead to nickel-hydrogen battery excessive heating when charging, simultaneously, the inside instantaneous production of battery is a large amount of hydrogen and oxygen, and the gas that produces this moment can't in time be dredged, can lead to the inside pressure increase of nickel-hydrogen battery, and then makes battery case pressurized inflation, and can even explode when atmospheric pressure reaches battery case's the limit of bearing.
Therefore, it is a problem to be solved by those skilled in the art how to dredge the high-pressure gas generated when the nickel-metal hydride battery fails, prevent the nickel-metal hydride battery from expanding and exploding, and improve the safety performance of the nickel-metal hydride battery.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the weak point among the prior art, provide a nickel-hydrogen battery with high-efficient pressure relief structure, increase pressure relief structure in nickel-hydrogen battery's block position, when battery trouble leads to inside pressure to rise, inside high-pressure gas is dredged to automatic start pressure relief structure, protects the battery, avoids the battery to take place inflation, explosion, improves nickel-hydrogen battery's security performance.
The purpose of the utility model is realized through the following technical scheme:
a nickel-metal hydride battery having a high-efficiency pressure relief structure includes: the battery cell, the shell and the pressure relief sealing cover;
the shell is of a cylindrical structure with an opening at one side, a positioning groove is formed in the opening position of the shell, and the battery cell is accommodated in the shell;
the pressure relief sealing cover comprises a flow collecting shaft, a tray, a reed and a cap, a plurality of pressure relief holes are formed in the cap, the cap is covered on the tray, the edges of the cap and the tray are embedded in the positioning grooves, the reed is arranged between the cap and the tray, through holes, a blocking groove and a plurality of ventilation grooves are formed in the tray, the ventilation grooves surround the blocking groove, the ventilation grooves are communicated with the blocking groove, the through holes are communicated with the blocking groove, the flow collecting shaft penetrates through the through holes and is abutted against the electric core, and the reed is abutted against the flow collecting shaft to drive the flow collecting shaft to be tightly attached to the wall of the blocking groove.
In one embodiment, the plurality of air-permeable grooves are distributed in a circumferential array by taking the retaining groove as a center.
In one embodiment, the blocking groove comprises a sealing part and a pressure relief part, the pressure relief part is communicated with the sealing part and is positioned on one side close to the reed, the inner wall of the sealing part is tightly attached to the outer wall of the flow collecting shaft, and a gap is formed between the inner wall of the pressure relief part and the outer wall of the flow collecting shaft.
In one embodiment, the diameter of the relief portion increases from the end proximate the sealing portion to the end proximate the leaf spring.
In one embodiment, the spring plate comprises an outer ring and a plurality of elastic teeth, the plurality of elastic teeth are arranged on the inner wall of the outer ring, and the plurality of elastic teeth are abutted against the end face of the collector shaft.
In one embodiment, the collector shaft comprises a guide rod, a flange plate and a sealing sleeve, the guide rod is arranged on the flange plate, the guide rod penetrates through the through hole, the sealing sleeve is sleeved on the flange plate, the outer wall of the sealing sleeve is used for being abutted to the inner wall of the blocking groove, and the reed is abutted to the flange plate.
In one embodiment, the diameter of the guide rod is smaller than the diameter of the through hole.
In one embodiment, the number of the pressure relief holes is 6.
In one embodiment, the nickel-metal hydride battery with the efficient pressure relief structure further comprises a sealing ring, the sealing ring is arranged on the inner wall of the positioning groove, and the edges of the cover cap and the tray are attached to the inner wall of the positioning groove.
In one embodiment, a blocking ring is arranged on one side of the sealing ring away from the opening of the shell.
Above-mentioned nickel-metal hydride battery with high-efficient pressure release structure is through setting up electric core, shell and pressure release closing cap, and pressure release closing cap position increases pressure release structure, and when the battery trouble leads to inside pressure to rise, automatic start is in order to dredge inside high-pressure gas, protects the battery, avoids the battery to take place inflation, explosion, improves nickel-metal hydride battery's security performance.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a nickel-metal hydride battery with a high-efficiency pressure relief structure according to an embodiment of the present invention;
fig. 2 is an exploded view of the nickel-metal hydride battery having the high-efficiency pressure relief structure shown in fig. 1;
fig. 3 is a schematic structural view of an embodiment of the present invention when the pressure relief sealing cover is in an initial state;
fig. 4 is a schematic structural view of an embodiment of the present invention when the pressure relief sealing cap is in a pressure relief state.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1, a nickel-metal hydride battery 10 with a high-efficiency pressure relief structure includes: the battery comprises a battery core 100, a shell 200 and a pressure relief sealing cover 300, wherein the battery core 100 is accommodated in the shell 200 and sealed by the pressure relief sealing cover 300, when the nickel-hydrogen battery 10 works abnormally, the battery core 100 generates a large amount of gas, when the internal pressure of the shell 200 rises, the pressure relief sealing cover 300 is opened under the action of pressure, an inner cavity of the shell 200 is communicated with the outside, the internal gas of the shell 200 is discharged to achieve the purpose of pressure relief, the battery is prevented from expanding and exploding, and the safety performance of the nickel-hydrogen battery is improved.
Referring to fig. 1, the casing 200 is a cylindrical structure with an opening at one side, and the opening of the casing 200 is provided with a positioning groove 210, and the battery cell 100 is accommodated in the casing 200, where it is to be noted that the positioning groove 210 is formed by folding the edge of the casing 200 in a direction approaching to the axis.
Referring to fig. 1 and 2, the pressure relief sealing cap 300 includes a current collecting shaft 310, a tray 320, a spring 330 and a cap 340, wherein the cap 340 has a plurality of pressure relief holes 341, and in one embodiment, 6 pressure relief holes 341 are provided. The cap 340 covers the tray 320, and the edges of the cap 340 and the tray 320 are embedded in the positioning groove 210, that is, the cap 340 and the tray 320 are fixed by the positioning groove 210 at the same time, and the inner wall of the cap 340 and the tray 320 enclose a pressure relief inner cavity 400 together, and the reed 330 is disposed between the cap 340 and the tray 320, that is, the reed 330 is located in the pressure relief inner cavity 400.
Referring to fig. 1 and 2, a through hole 321, a blocking groove 322 and a plurality of ventilation grooves 323 are formed in the tray 320, the plurality of ventilation grooves 323 are disposed around the blocking groove 322, each ventilation groove 323 is communicated with the blocking groove 322, the blocking groove 322 and the plurality of ventilation grooves 323 are disposed in the pressure relief inner cavity 400, the through hole 321 is communicated with the blocking groove 322, the current collecting shaft 310 penetrates through the through hole 321 and abuts against the battery cell 100, the spring plate 330 abuts against the current collecting shaft 310 to drive the current collecting shaft 310 to be tightly attached to the groove wall of the blocking groove 322, that is, the elastic force of the spring plate 330 acts on the end surface of the current collecting shaft 310, and the direction of the elastic force is from the position of the spring plate 330 to the position of the battery cell 100, so that the current collecting shaft 310 is tightly attached to the groove wall of the blocking groove 322.
The working principle of the pressure relief closure 300 is described below:
referring to fig. 3, when the nickel-metal hydride battery 10 normally operates, the pressure in the inner cavity of the housing 200 is lower than the elastic force applied to the current collecting shaft 310 by the spring plates 330, so that the current collecting shaft 310 is pressed and held in the blocking slot 322 by the elastic force and tightly attached to the slot wall of the blocking slot 322, at this time, the current collecting shaft 310 closes the through hole 321, at this time, the pressure relief inner cavity 400 is blocked from the inner cavity of the housing 200 by the current collecting shaft 310, and the gas in the housing 200 cannot enter the pressure relief inner cavity 400.
Referring to fig. 4, when an abnormality occurs in the nickel-metal hydride battery 10, the pressure in the housing 200 is rapidly increased, and if the pressure applied to the current collecting shaft 310 is greater than the elastic force provided by the spring plates 330 to the current collecting shaft 310, the resultant force of the external force applied to the current collecting shaft 310 is directed from the position of the battery cell 100 to the position of the spring plates 330, so that the current collecting shaft 310 moves away from the battery cell 100, that is, the current collecting shaft 310 is not in contact with the wall of the stopper groove 322, at this time, the through holes 321 are not blocked by the current collecting shaft 310, the inner cavity of the housing 200 is communicated with the outside air, the high-pressure gas firstly enters the stopper groove 322 through the through holes 321, flows into the pressure relief inner cavity 400 through the gas permeable grooves 323 communicated with the stopper groove 322, and is ejected through the plurality of pressure relief holes 341 on the cap 340, thereby completing the pressure.
After the pressure relief sealing cover 300 is started, the pressure inside the housing 200 begins to drop, and under the action of the elastic force provided by the reed 330, the current collecting shaft 310 moves towards the direction close to the battery cell 100 and is tightly attached to the wall of the blocking groove 322, so that the inner cavity of the housing 200 is blocked from the pressure relief inner cavity 400, the electrolyte is prevented from continuously leaking, dangerous accidents such as expansion and explosion are avoided when the nickel-hydrogen battery 10 is abnormal, and the safety performance of the nickel-hydrogen battery is improved.
Referring to fig. 2, in order to improve the pressure relief effect, a plurality of air-permeable grooves 323 are distributed in a circumferential array around the retaining groove 322.
Referring to fig. 2, in order to improve the pressure relief effect and prevent the flow collecting shaft 310 from being jammed when moving, the blocking groove 322 includes a sealing portion 322a and a pressure releasing portion 322b, the pressure releasing portion 322b is communicated with the sealing portion 322a, the pressure releasing portion 322b is located at a side close to the spring plate 330, an inner wall of the sealing portion 322a is closely attached to an outer wall of the flow collecting shaft 310, and a space is provided between an inner wall of the pressure releasing portion 322b and the outer wall of the flow collecting shaft 310. And the diameter of the relief portion 322b increases from the end near the sealing portion 322a to the end near the reed 330.
Further, referring to fig. 2, the spring plate 330 includes an outer ring 331 and a plurality of elastic teeth 332, the plurality of elastic teeth 332 are disposed on an inner wall of the outer ring 331, and the plurality of elastic teeth 332 are all abutted to an end surface of the collector shaft 310.
In an embodiment, referring to fig. 3, the collecting shaft 310 includes a guide rod 311, a flange 312 and a sealing sleeve 313, the guide rod 311 is disposed on the flange 312, the guide rod 311 passes through the through hole 321, the sealing sleeve 313 is sleeved on the flange 312, an outer wall of the sealing sleeve 313 is used for abutting against an inner wall of the stop groove 322, and the spring 330 abuts against the flange 312. And the diameter of the guide rod 311 is smaller than the diameter of the through hole 321.
In an embodiment, referring to fig. 1, the nickel-metal hydride battery 10 with a high-efficiency pressure relief structure further includes a sealing ring 500, the sealing ring 500 is disposed on the inner wall of the positioning groove 210, the edge of the cap 340 and the edge of the tray 320 are both attached to the inner wall of the positioning groove 210, and a blocking ring 510 is disposed on a side of the sealing ring 500 away from the opening of the housing 200.
Above-mentioned nickel-metal hydride battery 10 with high-efficient pressure release structure is through setting up electric core 100, shell 200 and pressure release closing cap 300, and pressure release closing cap 300 position increases pressure release structure, and when battery trouble leads to inside pressure to rise, automatic start is in order to dredge inside high-pressure gas, protects the battery, avoids the battery to take place inflation, explosion, improves nickel-metal hydride battery's security performance.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. A nickel-metal hydride battery with a high-efficiency pressure relief structure is characterized by comprising:
the battery core is provided with a battery core,
the battery cell comprises a shell, a battery cell and a battery core, wherein the shell is of a cylindrical structure with an opening at one side, a positioning groove is formed in the opening position of the shell, and the battery cell is accommodated in the shell;
the pressure relief sealing cover comprises a flow collecting shaft, a tray, a reed and a cover cap, a plurality of pressure relief holes are formed in the cover cap, the cover cap is arranged on the tray, the edges of the cover cap and the tray are embedded in the positioning grooves, the reed is arranged between the cover cap and the tray, through holes, a blocking groove and a plurality of ventilating grooves are formed in the tray, the ventilating grooves surround the blocking groove, the ventilating grooves are communicated with the blocking groove, the through holes are communicated with the blocking groove, the flow collecting shaft penetrates through the through holes and is abutted against the electric core, and the reed is abutted against the flow collecting shaft and is used for driving the flow collecting shaft to be tightly attached to the wall of the blocking groove.
2. The nickel-metal hydride battery with the efficient pressure relief structure as claimed in claim 1, wherein the plurality of gas-permeable grooves are distributed in a circumferential array around the retaining groove.
3. The nickel-metal hydride battery with the efficient pressure relief structure as claimed in claim 1, wherein the blocking groove includes a sealing portion and a pressure relief portion, the pressure relief portion is communicated with the sealing portion and located at a side close to the spring, an inner wall of the sealing portion is tightly attached to an outer wall of the current collecting shaft, and a space is provided between the inner wall of the pressure relief portion and the outer wall of the current collecting shaft.
4. The nickel-metal hydride battery having a high efficiency pressure relief structure as claimed in claim 3, wherein the diameter of the pressure relief portion increases from the end near the sealing portion to the end near the spring.
5. The nickel-metal hydride battery with the efficient pressure relief structure as claimed in claim 1, wherein the spring plate comprises an outer ring and a plurality of elastic teeth, the plurality of elastic teeth are disposed on an inner wall of the outer ring, and the plurality of elastic teeth are abutted to an end surface of the current collecting shaft.
6. The nickel-metal hydride battery with the efficient pressure relief structure as claimed in claim 1, wherein the current collecting shaft includes a guide rod, a flange and a sealing sleeve, the guide rod is disposed on the flange, the guide rod penetrates through the through hole, the sealing sleeve is sleeved on the flange, an outer wall of the sealing sleeve is used for abutting against an inner wall of the stop groove, and the reed abuts against the flange.
7. The nickel-metal hydride battery having a high efficiency pressure relief structure as claimed in claim 6, wherein the diameter of the guide rod is smaller than the diameter of the through hole.
8. The nickel-metal hydride battery with an efficient pressure relief structure as claimed in claim 1, wherein there are 6 pressure relief holes.
9. The nickel-metal hydride battery with the efficient pressure relief structure of claim 1, further comprising a sealing ring, wherein the sealing ring is disposed on the inner wall of the positioning groove, and the edges of the cap and the tray are attached to the inner wall of the positioning groove.
10. The nickel-metal hydride battery with the efficient pressure relief structure as claimed in claim 9, wherein a blocking ring is disposed on a side of the sealing ring away from the opening of the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922502803.8U CN211455813U (en) | 2019-12-30 | 2019-12-30 | Nickel-hydrogen battery with high-efficient pressure release structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922502803.8U CN211455813U (en) | 2019-12-30 | 2019-12-30 | Nickel-hydrogen battery with high-efficient pressure release structure |
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| Publication Number | Publication Date |
|---|---|
| CN211455813U true CN211455813U (en) | 2020-09-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922502803.8U Active CN211455813U (en) | 2019-12-30 | 2019-12-30 | Nickel-hydrogen battery with high-efficient pressure release structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115498335A (en) * | 2022-09-28 | 2022-12-20 | 厦门海辰储能科技股份有限公司 | End cover assembly, single battery, battery pack and electric equipment |
-
2019
- 2019-12-30 CN CN201922502803.8U patent/CN211455813U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115498335A (en) * | 2022-09-28 | 2022-12-20 | 厦门海辰储能科技股份有限公司 | End cover assembly, single battery, battery pack and electric equipment |
| CN115498335B (en) * | 2022-09-28 | 2023-09-15 | 厦门海辰储能科技股份有限公司 | End cover assembly, battery monomer, battery pack and electric equipment |
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