CN216054937U - Battery cover plate and battery - Google Patents
Battery cover plate and battery Download PDFInfo
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- CN216054937U CN216054937U CN202122337234.3U CN202122337234U CN216054937U CN 216054937 U CN216054937 U CN 216054937U CN 202122337234 U CN202122337234 U CN 202122337234U CN 216054937 U CN216054937 U CN 216054937U
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- battery
- hole
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- electrolyte
- cover plate
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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 battery cover plate and a battery, and relates to the technical field of batteries. The battery cover plate includes: the body is connected with the shell, a liquid injection hole and a liquid supplementing hole which are used for communicating the accommodating space with the outside of the battery are formed in the body, the liquid injection hole is used for adding the electrolyte into the liquid injection device during the production of the battery, and the liquid supplementing hole is used for supplementing the electrolyte into the liquid supplementing device during the use of the battery; the filling piece is detachably connected with the liquid supplementing hole; wherein the aperture of the liquid supplementing hole is smaller than that of the liquid injection hole. The utility model can solve the problems of battery fluid infusion and fluid leakage after fluid infusion.
Description
Technical Field
The utility model relates to the technical field of batteries, in particular to a battery cover plate and a battery.
Background
The conventional battery cover plate is provided with a liquid injection hole, the liquid injection hole is used for adding electrolyte in the battery production stage, the aperture of the liquid injection hole is generally required to be larger than a certain value for rapidly adding the electrolyte, but the larger the aperture is, the higher the leakage risk and the sealing difficulty are, therefore, after the electrolyte is added, in order to avoid the leakage of the liquid injection hole, the common treatment mode is to permanently block the liquid injection hole and prevent the liquid injection hole from being opened again.
However, during the use of the battery, the electrolyte is lost, resulting in irreversible capacity degradation of the battery, and the problem needs to be solved by replenishing the electrolyte. The conventional liquid filling hole does not have a possibility of opening the liquid replenishment again.
Therefore, how to solve the problems of battery fluid infusion and avoiding fluid leakage after fluid infusion becomes a technical problem to be solved by the technical personnel in the field.
SUMMERY OF THE UTILITY MODEL
The utility model provides a battery cover plate and a battery, which can solve the problems of battery liquid supplement and liquid leakage after liquid supplement.
The utility model provides the following scheme:
in one aspect, the present invention provides a battery cover plate, where the battery includes a case, and a receiving space for receiving an electrolyte is provided in the case, and the battery cover plate includes:
the body is connected with the shell, a liquid injection hole and a liquid supplementing hole which are used for communicating the accommodating space with the outside of the battery are formed in the body, the liquid injection hole is used for adding the electrolyte into a liquid injection device during the production of the battery, and the liquid supplementing hole is used for supplementing the electrolyte into the liquid supplementing device during the use of the battery; and
the filling piece is detachably connected with the liquid supplementing hole;
wherein the aperture of the liquid supplementing hole is smaller than that of the liquid injection hole.
Optionally, the filling member includes a column body and a connecting portion, the column body is placed in the fluid infusion hole, and the connecting portion is disposed outside the fluid infusion hole.
Optionally, the diameter of the cross section of the cylinder is larger than the aperture of the fluid replenishing hole.
Optionally, the connecting portion is hemispherical and has a diameter greater than a diameter of a cross section of the cylinder.
Optionally, the battery cover plate further comprises:
and the sealing material is filled between the filling piece and the liquid replenishing hole.
Optionally, the battery cover plate further comprises:
the positive pole is connected with a positive pole piece of the battery, and the negative pole is connected with a negative pole piece of the battery;
the body is also provided with an explosion-proof hole.
In another aspect, the present invention also provides a battery, including:
a case in which an accommodating space for accommodating an electrolyte is provided;
the battery cover plate is connected with the shell and comprises a body and a filling piece, and the body is provided with a liquid injection hole and a liquid supplementing hole which are communicated with the accommodating space and the outside of the battery.
According to the specific embodiment provided by the utility model, the utility model discloses the following technical effects:
the battery cover plate provided by the utility model is provided with two holes, namely a liquid injection hole and a liquid supplementing hole. The liquid injection hole is used for adding electrolyte in the battery production stage, and the hole diameter of the liquid injection hole is larger in order to rapidly complete the addition of the electrolyte. The liquid supplementing hole is used for supplementing electrolyte in the using process of the battery, when the electrolyte is lost, the filling piece can be taken out to supplement the electrolyte, on one hand, the amount of the electrolyte needing to be supplemented is usually not too large, so that the electrolyte can be rapidly supplemented even if the aperture of the liquid supplementing hole is small, on the other hand, the liquid supplementing hole is easy to block as the aperture is smaller, and liquid leakage is not easy to occur after blocking. Therefore, the battery cover plate provided by the utility model can realize the supplement of the electrolyte in the use stage of the battery and can also avoid the problem of electrolyte leakage caused by the supplement of the electrolyte.
Further, the diameter of the cross section of the column body of the filling piece is larger than the aperture of the liquid supplementing hole, namely the cross section of the column body of the filling piece and the aperture of the liquid supplementing hole are in interference fit, so that the liquid supplementing hole is completely sealed, and liquid leakage is avoided.
Of course, embodiments of the utility model need not achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a perspective view of a battery cover plate and a battery provided in accordance with an embodiment of the present invention;
fig. 2 is a top view of a battery cover and battery provided in accordance with one embodiment of the present invention;
FIG. 3 is a sectional view taken along line A-A of FIG. 2;
fig. 4 is a schematic structural diagram of a filling member of a battery cover plate according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.
It should be noted that the descriptions of the present invention with respect to the directions of "left", "right", "upper", "lower", "top", "bottom", etc. are defined based on the relationship of the orientation or position shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the structure described must be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Fig. 1 is a perspective view of a battery cover plate and a battery according to an embodiment of the present invention. Fig. 2 is a top view of a battery cover and battery provided by one embodiment of the present invention. Fig. 3 is a sectional view taken along line a-a in fig. 2. The battery includes a case 100, and a receiving space for receiving an electrolyte is provided in the case 100. As shown in fig. 1, the present invention provides a battery cap plate 200 including a body 210 and a filling member 220. The body 210 is connected to the casing 100, and the body 210 is provided with a liquid injection hole 211 and a liquid supplement hole 212 for communicating the accommodating space and the outside of the battery. Annotate liquid hole 211 and be used for when battery production supply priming device to add electrolyte, after the electrolyte interpolation, the shutoff annotate liquid hole 211, and ensure annotate liquid hole 211 leak-tight and difficult being opened in the battery use, in order to guarantee annotate the leakproofness of liquid hole 211, promote the security of battery. The liquid supplementing hole 212 is used for supplementing electrolyte to a liquid supplementing device in the use process of the battery, and can be opened and closed repeatedly. The filling member 220 is detachably connected to the fluid replenishing hole 212, and is configured to seal the fluid replenishing hole 212 after completion of replenishing the electrolyte, the fluid replenishing hole 212 is sealed after the filling member 220 is connected to the fluid replenishing hole 212, and the fluid replenishing hole 212 is opened after detachment. Wherein, the aperture of the liquid replenishing hole 212 is smaller than that of the liquid injecting hole 211. Wherein, the fluid infusion device comprises an injector.
The battery cover 200 of the present embodiment is provided with two holes, namely, the liquid injection hole 211 and the liquid replenishing hole 212. The liquid injection hole 211 is used for adding electrolyte in the battery production stage, and in order to quickly complete the addition of the electrolyte, the hole diameter of the liquid injection hole 211 is large. The liquid replenishing hole 212 is used for replenishing electrolyte in the use process of the battery, when the electrolyte is lost, the filling piece 220 can be taken out for replenishing the electrolyte, on one hand, the amount of the electrolyte required to be replenished is usually not too large, so that the replenishment of the electrolyte can be rapidly completed even if the aperture of the liquid replenishing hole 212 is small, on the other hand, the plugging is easier as the aperture is smaller, and the leakage is not easy after the plugging. Therefore, the battery cover plate 200 provided by the utility model can not only realize the supplement of the electrolyte in the use stage of the battery, but also avoid the problem of electrolyte leakage caused by the supplement of the electrolyte.
In a specific embodiment, the diameter of the liquid injection hole 211 may be set according to the actual requirement of the battery, and the diameter of the liquid replenishing hole 212 may also be set according to the actual requirement of the battery.
Fig. 4 is a schematic structural diagram of a filling member of a battery cover plate according to an embodiment of the present invention. In a specific embodiment, as shown in fig. 4, the filling member 220 includes a column 221 and a connecting portion 222, the column 221 is inserted into the fluid replenishing hole 212, and the connecting portion 222 is disposed outside the fluid replenishing hole 212. The connection portion 222 is disposed to facilitate the assembling and disassembling of the filling member 220, and further seal the fluid replenishing hole 212. When electrolyte needs to be supplemented, the connecting part 222 and the cylinder 221 are taken out of the body 210 by welding the connecting part 222 through welding equipment, then the battery is supplemented with electrolyte through the electrolyte supplementing hole 212 through the electrolyte supplementing device, and after the electrolyte supplementing is completed, the cylinder 221 is placed in the electrolyte supplementing hole 212, so that the electrolyte supplementing hole 212 is sealed.
In a specific embodiment, the diameter of the cross section of the cylinder 221 is larger than the diameter of the fluid infusion hole 212, that is, the cylinder 221 and the fluid infusion hole 212 are in interference fit, so that the fluid infusion hole 212 is completely sealed, and the fluid infusion hole 212 is not leaked after being filled by the filling member 220 even if other auxiliary means are not used.
In a specific embodiment, the connection portion 222 has a hemispherical shape, the cylinder 221 has a cylindrical shape, the diameter of the connection portion 222 is greater than that of the cross-section of the cylinder 221, and the filling member 220 has a mushroom shape as a whole. The diameter of the connecting portion 222 is larger than that of the cross section of the column body 221, and the cross section of the column body 211 is larger than that of the fluid infusion hole 212, that is, the diameter of the connecting portion 222 is larger than that of the fluid infusion hole 212, so that the connecting portion 222 completely covers the fluid infusion hole 212, and the sealing performance of the fluid infusion hole 212 after being blocked is further improved.
In another specific embodiment, the battery cap plate 200 further includes a sealing material filled between the filling member 220 and the fluid filling hole 212. In order to further improve the sealability of the battery cap plate 200, a sealing material is provided and filled between the filling member 220 and the fluid-replenishing hole 212. Preferably, the sealing material is filled between the cylinder 221 and the fluid replenishing hole 212, and between the connection portion 222 and the fluid replenishing hole 212.
In a particular embodiment, the sealing material comprises a sealant and/or a rubber pad. When the sealant is used as the sealing material, the liquid supplementing hole 212 is sealed, the sealant can be coated on the outer wall of the column body 221 and one side of the connecting part 222 close to the liquid injecting hole 212, the sealant can also be coated in the liquid injecting hole 212, and the filling piece 220 is placed in the liquid injecting hole 212 after the sealant is uniformly coated, so that the sealant is prevented from being dried and solidified. When the rubber gasket is used as the sealing material, the rubber gasket may be first connected to the liquid filling hole 212 when the liquid filling hole 212 is sealed, or the rubber gasket may be first connected to the filling member 220 and then the filling member 220 may be placed in the liquid filling hole 212.
In a specific embodiment, the material of the filling member includes, but is not limited to, steel, alloy, rubber, plastic, etc., but since the electrolyte has a certain corrosiveness, the filling member is required to be made of a corrosion-resistant material.
In a specific embodiment, the battery cover 200 further includes a positive post 230 and a negative post 240, and the body 210 further has an explosion-proof hole 213. The positive post 230 is connected to the positive pole piece of the battery and the negative post 240 is connected to the negative pole piece of the battery. The explosion-proof hole 213 is used for explosion when the internal pressure of the battery cell is greater than a certain value, and releasing the pressure, so that the battery cell is prevented from explosion, and the safety of the battery is improved.
In a specific embodiment, the explosion-proof hole 213 is opened at the middle position of the body 210, the liquid injection hole 211 and the liquid supplement hole 212 are distributed at two sides of the explosion-proof hole 213, the positive pole 230 is disposed at the side of the liquid injection hole 211 far from the explosion-proof hole 213, and the negative pole 240 is disposed at the side of the liquid supplement hole 212 far from the explosion-proof hole 213.
In a specific embodiment, the positive post 230 and the negative post 240 are both square, the size of the positive post 230 and the size of the negative post 240 are substantially the same, and the explosion-proof hole 213 is oval.
In one embodiment, the battery cover 200 is rectangular and sized to fit the housing 100 to ensure good sealing when connected.
In a specific embodiment, the battery cover 200 is connected to the housing 100 by means including, but not limited to, gluing, clamping, and the like.
In a specific embodiment, the liquid inlet 211 is stepped along its axial direction.
In a specific embodiment, the body 210 is of an integrally formed structure and has high structural strength, and the body 210 is made of an insulating flame-retardant material, preferably, an insulating flame-retardant plastic, so that the insulation and flame retardancy of the battery can be improved.
In a specific embodiment, four corners of the body 210 are each set to be a chamfered corner, so as to facilitate assembly with the housing 100.
The present invention also provides a battery, which generally comprises a housing 100 and the battery cover 200 provided in any one of the above embodiments, wherein the battery cover 200 is connected to the housing 100, the housing 100 is provided with the accommodating space for accommodating the electrolyte therein, the cover comprises the body 210 and the filling member 220, and the body 210 is connected to the housing 100. The body 210 is provided with the liquid injection hole 211 and the liquid supplementing hole 212 which are used for communicating the accommodating space with the outside of the battery, the liquid injection hole 211 is used for adding electrolyte in the battery production stage, and the hole diameter of the liquid injection hole 211 is larger in order to quickly complete the addition of the electrolyte. The liquid replenishing hole 212 is used for replenishing electrolyte in the use process of the battery, when the electrolyte is lost, the filling piece 220 can be taken out for replenishing the electrolyte, on one hand, the amount of the electrolyte required to be replenished is usually not too large, so that the replenishment of the electrolyte can be quickly completed even if the aperture of the liquid replenishing hole is small, on the other hand, the plugging is easy as the aperture is smaller, and the leakage is not easy after the plugging. Therefore, the battery cover plate 200 provided by the utility model can not only realize the supplement of the electrolyte in the use stage of the battery, but also avoid the problem of electrolyte leakage caused by the supplement of the electrolyte.
Preferably, the battery is a square battery, and is generally applied to electronic products such as mobile phones and computers.
Further, the battery also comprises a positive pole piece, a negative pole piece and a diaphragm, wherein the positive pole piece is connected with the positive pole column 230, the negative pole piece is connected with the negative pole column 240, and the diaphragm is arranged between the positive pole piece and the negative pole piece, has electric insulation performance and liquid retention performance and is used for blocking the transmission of electrons in the battery. The separator may be selected from various separators used in lithium ion batteries, such as one or more of polyolefin microporous membrane, polypropylene, polyethylene felt, glass fiber felt or ultrafine glass fiber paper.
The preparation steps of the battery comprise the steps of preparing the positive pole piece, the negative pole piece and the electrolyte of the battery, separating the positive pole piece and the negative pole piece through the diaphragm to form an electrode group, placing the electrode group into the shell 100, connecting the shell 100 with the battery cover plate 200, connecting the positive pole piece with the positive pole column 230, connecting the negative pole piece with the negative pole column 240, adding the electrolyte through the electrolyte injection hole 211, and sealing the electrolyte injection hole 211. Further, during the use of the battery, the electrolyte is replenished through the liquid replenishing hole 212.
Of course, the battery inevitably includes other necessary components, which are known to those skilled in the art, and thus, will not be described herein in detail.
The technical solutions provided by the present invention are described in detail above, and specific examples are applied in this document to explain the structure and the implementation of the present invention, and the descriptions of the above examples are only used to help understanding the method and the core ideas of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the utility model.
Claims (7)
1. The utility model provides a battery cover plate, battery includes the casing, be provided with the accommodation space that is used for holding electrolyte in the casing, its characterized in that, battery cover plate includes:
the body is connected with the shell, a liquid injection hole and a liquid supplementing hole which are used for communicating the accommodating space with the outside of the battery are formed in the body, the liquid injection hole is used for adding the electrolyte into a liquid injection device during the production of the battery, and the liquid supplementing hole is used for supplementing the electrolyte into the liquid supplementing device during the use of the battery; and
the filling piece is detachably connected with the liquid supplementing hole;
wherein the aperture of the liquid supplementing hole is smaller than that of the liquid injection hole.
2. The battery cover plate according to claim 1, wherein the filling member includes a column and a connecting portion connected together, the column being inserted into the fluid filling hole, the connecting portion being disposed outside the fluid filling hole.
3. The battery cover plate according to claim 2, wherein the diameter of the cross section of the cylinder is larger than the diameter of the pore of the fluid replenishing hole.
4. The battery cap plate according to claim 2, wherein the connection part has a hemispherical shape and a diameter greater than that of a cross-section of the cylinder.
5. The battery cover plate according to any one of claims 1 to 4, further comprising:
and the sealing material is filled between the filling piece and the liquid replenishing hole.
6. The battery cover plate according to any one of claims 1 to 4, further comprising:
the positive pole is connected with a positive pole piece of the battery, and the negative pole is connected with a negative pole piece of the battery;
the body is also provided with an explosion-proof hole.
7. A battery, comprising:
a case in which an accommodating space for accommodating an electrolyte is provided;
the battery cover plate of any one of claims 1-6, wherein the battery cover plate is connected to the housing, the battery cover plate comprises a body and a filling member, and the body is provided with a liquid injection hole and a liquid supplement hole for communicating the accommodating space with the outside of the battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122337234.3U CN216054937U (en) | 2021-09-26 | 2021-09-26 | Battery cover plate and battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122337234.3U CN216054937U (en) | 2021-09-26 | 2021-09-26 | Battery cover plate and battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216054937U true CN216054937U (en) | 2022-03-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122337234.3U Active CN216054937U (en) | 2021-09-26 | 2021-09-26 | Battery cover plate and battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216054937U (en) |
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2021
- 2021-09-26 CN CN202122337234.3U patent/CN216054937U/en active Active
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