CN218677348U - Battery cover plate and battery - Google Patents
Battery cover plate and battery Download PDFInfo
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- CN218677348U CN218677348U CN202223196163.0U CN202223196163U CN218677348U CN 218677348 U CN218677348 U CN 218677348U CN 202223196163 U CN202223196163 U CN 202223196163U CN 218677348 U CN218677348 U CN 218677348U
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- battery
- cover plate
- hole
- liquid injection
- internal pressure
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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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- Gas Exhaust Devices For Batteries (AREA)
Abstract
The utility model discloses a battery cover plate and battery. The battery cover plate comprises a cover plate body and an exhaust device, wherein the cover plate body is provided with a connecting hole and a liquid injection hole which are communicated from top to bottom, the inner diameter of the connecting hole is larger than that of the liquid injection hole, and the liquid injection hole is used for injecting liquid into a battery; and the exhaust device is connected with the connecting hole after the liquid injection of the battery is finished and is used for sealing the liquid injection hole and exhausting the gas in the battery when the internal pressure of the battery is more than or equal to a threshold value. The utility model discloses explosion-proof valve can be by the problem of the electrolyte corrosion that the notes liquid process spilled over among the prior art has been avoided completely, has improved the security of battery.
Description
Technical Field
The utility model relates to a battery technology field especially relates to a battery cover plate and battery.
Background
The liquid injection hole and the explosion-proof valve of the battery respectively play roles in injecting liquid into the battery and preventing danger caused by volume expansion of the battery.
At present, a liquid injection hole and an explosion-proof valve of a battery are respectively distributed at different positions on the same horizontal line of a battery cover plate, and when liquid leakage occurs in battery liquid injection, overflowing electrolyte can corrode a shell and the explosion-proof valve; the corroded explosion-proof valve cannot release the internal pressure of the battery, so that the effect of the explosion-proof valve disappears, and great potential safety hazards exist.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a battery cover plate, the problem that explosion-proof valve can be corroded by the electrolyte that annotates the liquid process and spill over among the prior art has been avoided completely to the battery cover plate, has improved the security of battery.
In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
a battery cover plate comprising:
the cover plate body is provided with a connecting hole and a liquid injection hole which are communicated from top to bottom, the inner diameter of the connecting hole is larger than that of the liquid injection hole, and the liquid injection hole is used for injecting liquid into the battery;
and the exhaust device is connected with the connecting hole after the battery liquid injection is finished and is used for sealing the liquid injection hole and discharging the gas in the battery when the internal pressure of the battery is greater than or equal to a threshold value.
In some embodiments, the exhaust device includes a cover body and an elastic component, the outer peripheral surface of the cover body is fixedly connected with the hole wall surface of the connecting hole, the cover body is provided with a cavity with a downward opening, an exhaust channel is arranged in the side wall of the cover body, the exhaust channel is provided with an exhaust inlet and an exhaust outlet, the exhaust inlet is arranged on the inner peripheral surface of the cover body wall body, the elastic component is arranged in the cavity, and the elastic component is used for blocking the exhaust inlet when the internal pressure of the battery is smaller than a threshold value and opening the exhaust inlet when the internal pressure of the battery is larger than or equal to the threshold value.
In some embodiments, an inner convex portion located below the exhaust inlet is provided on the inner circumferential wall of the lower end of the cover body, the upper end of the elastic element is connected with the concave bottom surface of the concave cavity, and the lower end of the elastic element can be abutted on the inner convex portion in a vertically movable manner.
In some embodiments, the elastic member includes a spring and a sealing piece, an upper end of the spring is connected to the concave bottom surface of the concave cavity, a lower end of the spring is connected to the sealing piece, and the sealing piece is used for sealing the exhaust inlet when the internal pressure of the battery is less than a threshold value and for opening the exhaust inlet when the internal pressure of the battery is greater than or equal to the threshold value.
In some embodiments, the containment sheet is a polytetrafluoroethylene sheet.
In some embodiments, the cover is an aluminum cover.
In some embodiments, the outer circumferential surface of the cover body and the hole wall surface of the connecting hole are fixed by screw threads.
In some embodiments, a shoulder is formed between the connection hole and the injection hole, and the lower end surface of the cover body abuts against the shoulder.
In some embodiments, the top of the cover body is provided with a sinking groove sinking downwards, and the side wall of the sinking groove is provided with a chamfer opening.
Compared with the prior art, the utility model discloses a battery cover plate installs exhaust apparatus through setting up the connecting hole in the position department that the notes liquid hole on the apron body was located, no longer sets up explosion-proof valve in other positions on the apron body simultaneously, connects exhaust apparatus and connecting hole after the battery inside notes liquid process is accomplished again, has the following advantage, first, even the phenomenon that appears emitting liquid in the notes liquid process can not corrode exhaust apparatus yet to the problem that the explosion-proof valve can be corroded to electrolyte that overflows among the prior art has been avoided completely, has guaranteed the utility model discloses an exhaust apparatus's explosion-proof result of use of exhausting; secondly, the exhaust device can also be used as a sealing nail of the liquid injection hole, so that the sealing process of a glue nail is reduced, and the efficiency in the manufacturing process of the battery is improved; thirdly, when the internal pressure of the battery is equal to or greater than the threshold value, the exhaust device can exhaust the internal gas of the battery, so that the internal pressure of the battery can be ensured to be in a relatively constant range, and the expansion force circulation test of the battery can be improved.
Another object of the present invention is to provide a battery, including the battery cover plate according to the embodiment of the present invention.
Compared with the prior art, the advantage that the battery has with the utility model discloses the battery cover plate has the advantage the same, no longer gives unnecessary details here.
Drawings
The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:
fig. 1 is a first cross-sectional view of an exhaust device according to an embodiment of the present invention, wherein it is shown that the exhaust device blocks an exhaust inlet.
Fig. 2 is a second cross-sectional view of an exhaust according to an embodiment of the invention, wherein the exhaust opens the exhaust inlet.
Fig. 3 is a schematic structural diagram of a cover plate body according to an embodiment of the present invention.
Fig. 4 is a cross-sectional view of a cover plate body according to an embodiment of the present invention.
Fig. 5 is a plan view of an exhaust device according to an embodiment of the present invention.
Description of reference numerals:
the cover plate body 1 is connected with the first hole 1021 and the second hole 1022 of the liquid injection hole 102 of the liquid injection hole 101
Inner convex edge 2017 elastic component 202 spring 2021 plugging sheet 2022 pole 3
Internal pressure F of battery
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
The present invention will be described in detail with reference to fig. 1 to 5 in conjunction with embodiments.
As shown in fig. 1 to 5, the battery cover plate according to the embodiment of the present invention includes a cover plate body 1 and an exhaust device 2.
The cover plate body 1 is provided with a connecting hole 101 and a liquid injection hole 102 which are communicated from top to bottom, the inner diameter of the connecting hole 101 is larger than that of the liquid injection hole 102, and the liquid injection hole 102 is used for injecting liquid into the battery; the gas exhaust means 2 is connected to the connection hole 101 after the battery charging is completed, for closing the charging hole 102 and exhausting the battery internal gas when the battery internal pressure F is equal to or greater than the threshold value.
Specifically, the battery cover plate of the present invention can be applied to various types of batteries in which gas may be generated, for example, lithium ion batteries. As shown in fig. 3, the cover plate body 1 is provided with the pole 3, as shown in fig. 4, the cover plate body 1 is provided with a connecting hole 101 and a liquid injection hole 102 which are communicated from top to bottom, the liquid injection hole 102 is used for injecting liquid into the battery, the liquid injection hole 102 further comprises a first hole 1021 and a second hole 1022 which are communicated from top to bottom, the second hole 1022 is a circular truncated cone-shaped hole, the diameter of the upper end of the second hole 1022 is smaller than that of the first hole 1021, and the inner diameter of the second hole 1022 is gradually reduced from top to bottom.
The connecting hole 101 is used for connecting with the exhaust device 2, and the inner diameter of the connecting hole 101 is larger than that of the liquid injection hole 102, so that the possibility that the connecting hole 101 is contacted with the electrolyte can be reduced, and the electrolyte is prevented from corroding the connecting hole 101 so as to influence the connection with the exhaust device 2.
The gas exhaust means 2 is connected to the connection hole 101 after the battery charging is completed, for closing the charging hole 102 and exhausting the battery internal gas when the battery internal pressure F is equal to or greater than the threshold value. That is, the exhaust device 2 is connected to the connection hole 101 only after the battery charging is completed. The exhaust device 2 is used for sealing the liquid injection hole 102 when the internal pressure F of the battery is less than a threshold value, so that the interior of the battery cannot be communicated with the external environment; the exhaust device 2 is also used to exhaust the battery internal gas when the battery internal pressure F is greater than or equal to a threshold value. It should be noted that the explosion-proof valve is not provided on the cover plate body 1. The exhaust device 2 which can be used for discharging the gas in the battery is arranged at the liquid injection hole 102, the exhaust device 2 is connected with the connecting hole 101 after the process of injecting the liquid into the battery is completed in the liquid injection hole 102, and even if the liquid is overflowed when the liquid is injected into the battery, the exhaust device 2 cannot be corroded, so that the problem that the explosion-proof valve in the prior art is corroded by the electrolyte overflowed in the liquid injection process is completely avoided.
When the battery internal pressure F is less than the threshold value, the gas exhaust means 2 closes the liquid injection hole 102, that is, closes the inside of the battery, so that the inside of the battery does not communicate with the outside, and external gas or impurities do not enter the inside of the battery, and when the battery internal pressure F is equal to or greater than the threshold value, the battery internal gas can be exhausted through the gas exhaust means 2. The threshold value is a value at which the internal pressure F of the battery is in a safe state, and may be determined according to actual conditions and the type of the battery. It is understood that when the gas inside the battery is exhausted and the pressure F inside the battery is again less than the threshold value, the gas exhaust device 2 can still act to close the liquid injection hole 102.
According to the battery cover plate of the embodiment of the utility model, the exhaust device 2 is installed by arranging the connecting hole 101 at the position where the liquid injection hole 102 on the cover plate body 1 is located, meanwhile, the explosion-proof valve is not arranged at other positions on the cover plate body 1 any more, and the exhaust device 2 is connected with the connecting hole 101 after the liquid injection process in the battery is completed, so that the exhaust device 2 cannot be corroded even if the liquid overflowing phenomenon occurs in the liquid injection process, and the problem that the explosion-proof valve can be corroded by overflowing electrolyte in the liquid injection process in the prior art is completely avoided, and the exhaust explosion-proof use effect of the exhaust device 2 is ensured; secondly, the exhaust device 2 can also be used as a sealing nail of the liquid injection hole 102, thereby reducing the sealing procedure of the glue nail and improving the efficiency in the manufacturing process of the battery; thirdly, when the internal pressure F of the battery is equal to or greater than the threshold value, the gas inside the battery can be discharged by the gas discharge device 2, so that the internal pressure F of the battery can be ensured to be in a relatively constant range, and the expansion force cycle test of the battery can be improved.
In some embodiments, as shown in fig. 1 and fig. 2, the vent device 2 includes a cover 201 and an elastic component 202, an outer peripheral surface of the cover 201 is fixedly connected to a hole wall surface of the connection hole 101, the cover 201 is provided with a cavity with a downward opening, a vent passage 2011 is provided in a side wall of the cover 201, the vent passage 2011 has a vent inlet 20111 and a vent outlet 20112, the vent inlet 20111 is provided on an inner peripheral surface of the wall body of the cover 201, the elastic component 202 is provided in the cavity, and the elastic component 202 is configured to seal the vent inlet 20111 when the internal pressure F of the battery is less than a threshold value, and configured to open the vent inlet 20111 when the internal pressure F of the battery is greater than or equal to the threshold value. It can be understood that, when the internal pressure F of the battery is greater than or equal to the threshold value, the internal pressure F of the battery may press the elastic assembly 202 to deform the elastic assembly 202, so that the elastic assembly 202 may be converted from a state of blocking the exhaust inlet 20111 to a state of opening the exhaust inlet 20111, and gas inside the battery may enter the exhaust passage 2011 from the exhaust inlet 20111 and then be exhausted from the exhaust outlet 20112, thereby reducing the internal pressure F of the battery and preventing the internal pressure F of the battery from being too large.
Specifically, the exhaust inlet 20111 may be disposed at an opening close to the cavity, the exhaust outlet 20112 may be disposed on a circumferential side wall of the cover 201 or on a top of the cover 201, which may be selected as needed, and the exhaust passage 2011 may be disposed in a plurality along the circumference of the cover 201.
In some embodiments, as shown in fig. 1 and 2, an inner protrusion 2012 below the exhaust inlet 20111 is disposed on an inner peripheral wall of the lower end of the cover 201, an upper end of the elastic element 202 is connected to a concave bottom surface of the concave cavity, and a lower end of the elastic element 202 is movably abutted against the inner protrusion 2012 up and down. It can be understood that the inner protrusion 2012 can limit the lower end of the elastic component 202, so that the elastic component 202 has a certain initial stress, and the elastic component 202 can have a good sealing effect on the battery.
Specifically, the inner protrusion 2012 is a convex ring or a plurality of circumferentially spaced protrusions.
In some embodiments, as shown in fig. 1 and 2, the elastic assembly 202 includes a spring 2021 and a blocking tab 2022, an upper end of the spring 2021 is connected to the concave bottom surface of the cavity, a lower end of the spring 2021 is connected to the blocking tab 2022, and the blocking tab 2022 is used for blocking the exhaust inlet 20111 when the internal pressure F of the battery is less than a threshold value and for opening the exhaust inlet 20111 when the internal pressure F of the battery is greater than or equal to the threshold value. It is understood that when the battery internal pressure F is greater than or equal to the threshold value, the battery internal pressure F presses the spring 2021 through the plugging sheet 2022, so that the spring 2021 deforms, the plugging sheet 2022 moves, so that the plugging sheet 2022 no longer plugs the exhaust inlet 20111, and the exhaust inlet 20111 is opened. It will be appreciated that the spring 2021 may be replaced by other resiliently deformable structures to allow the flap 2022 to be reset.
In some embodiments, the plugging sheet 2022 is a polytetrafluoroethylene sheet. The polytetrafluoroethylene sheet is used as the plugging sheet 2022, so that on one hand, the plugging sheet 2022 can play a good role in sealing the liquid injection hole 102, and on the other hand, the plugging sheet 2022 can have good corrosion resistance, thereby being beneficial to ensuring good air tightness in the battery.
In some embodiments, the cover 201 is an aluminum cover. On the one hand, aluminium has certain toughness, and when battery internal pressure F was too big, aluminium lid 201 can take place to warp, reduces the inside risk of explosion because of stress is too big of battery, is favorable to improving the security of battery, and on the other hand, the low price of aluminium is favorable to reduce cost.
In some embodiments, the outer circumferential surface of the cover 201 and the wall surface of the connection hole 101 are fixed by threads, so that the connection is simpler and more convenient.
Further, after the outer peripheral surface of the cover body 201 and the wall surface of the connecting hole 101 are fixed by threads, welding is adopted for further fixing, so that a better fixing effect is ensured.
In some embodiments, as shown in fig. 4, a shoulder is formed between the connection hole 101 and the pouring hole 102, and the lower end surface of the lid 201 abuts against the shoulder, so that the installation position of the lid 201 can be limited, and the lid 201 can be quickly and accurately installed to a certain position.
In some embodiments, as shown in fig. 1 and 2, the top of the cover 201 is provided with a sunken sink groove 2013, and as shown in fig. 5, the side wall of the sink groove 2013 is provided with a chamfer 2014. It should be noted that, the mounting work for mounting the exhaust apparatus 2 to the attachment hole 101 is provided with a projection engaged with the chamfered opening 2014, and when it is required to mount the exhaust apparatus 2 to the attachment hole 101, the mounting work is inserted into the depressed groove 2013 while the projection on the mounting work is inserted into the chamfered opening 2014, so that the mounting work can be rotated so that the exhaust apparatus 2 is attached to the attachment hole 101. That is, the design of the chamfered opening 2014 and the sink 2013 facilitates pre-tightening of the exhaust device 2 during production.
In some embodiments, as shown in fig. 1 and 2, the cover 201 includes a split barrel 2015 and a cover 2016, the cover 2016 is disposed on the barrel 2015, the cover 2016 abuts the upper end of the spring 2021, and the inner sidewall of the barrel 2015 and the top wall of the cover 2016 form a sink 2013.
Further, as shown in fig. 1 and 2, an inner flange 2017 is provided on the inner side wall of the top end of the barrel 2015, and the top of the cover 2016 abuts against the bottom of the inner flange 2017.
The battery cover of the present invention will be described with reference to a specific example.
In this specific example, as shown in fig. 1 to 5, a battery cover plate includes a cover plate body 1 and an exhaust device 2, the cover plate body 1 is provided with a connection hole 101 and a liquid injection hole 102 which are communicated from top to bottom, the inner diameter of the connection hole 101 is larger than that of the liquid injection hole 102, and the liquid injection hole 102 is used for injecting liquid into a battery; the gas exhaust means 2 is connected to the connection hole 101 after the battery charging is completed, for closing the charging hole 102 and exhausting the battery internal gas when the battery internal pressure F is equal to or greater than the threshold value.
The exhaust device 2 comprises a cover body 201 and an elastic component 202, the outer peripheral surface of the cover body 201 and the wall surface of the hole of the connecting hole 101 are fixed through threads, the cover body 201 is provided with a cavity with a downward opening, an exhaust channel 2011 is arranged in the side wall of the cover body 201, the exhaust channel 2011 is provided with an exhaust inlet 20111 and an exhaust outlet 20112, the exhaust inlet 20111 is arranged on the inner peripheral surface of the wall body of the cover body 201, the elastic component 202 is arranged in the cavity, the elastic component 202 comprises a spring 2021 and a blocking sheet 2022, the upper end of the spring 2021 is connected with the concave bottom surface of the cavity, the lower end of the spring 2021 is connected with the blocking sheet 2022, the blocking sheet 2022 is used for blocking the exhaust inlet 20111 when the internal pressure F of the battery is smaller than a threshold value, and used for opening the exhaust inlet 20111 when the internal pressure F of the battery is larger than or equal to the threshold value, the blocking sheet 2022 is a polytetrafluoroethylene sheet, and the cover body 201 is an aluminum cover body 201.
An inner convex part 2012 positioned below the exhaust inlet 20111 is arranged on the inner peripheral wall of the lower end of the cover body 201, the upper end of the elastic component 202 is connected with the concave bottom surface of the concave cavity, and the lower end of the elastic component 202 can be in movable up and down abutting joint with the inner convex part 2012. The top of the cover body 201 is provided with a sinking groove 2013 sinking downwards, and the side wall of the sinking groove 2013 is provided with a chamfer opening 2014. A shoulder is formed between the connecting hole 101 and the pouring hole 102, and the lower end surface of the lid body 201 abuts against the shoulder.
Each functional component in the battery cover plate of this specific example has the same function as the corresponding functional component in the foregoing, and is not described again here.
The battery cover plate of the specific example is provided with the connecting hole 101 for installing the exhaust device 2 through the position where the liquid injection hole 102 on the cover plate body 1 is located, meanwhile, the explosion-proof valve is not arranged at other positions on the cover plate body 1, and the exhaust device 2 is connected with the connecting hole 101 after the liquid injection process inside the battery is finished, so that the battery cover plate has the advantages that firstly, even if the liquid injection process is completed, the exhaust device 2 cannot be corroded, the problem that the explosion-proof valve can be corroded by overflowing electrolyte in the prior art is completely avoided, and the exhaust explosion-proof use effect of the exhaust device 2 is ensured; secondly, the exhaust device 2 can also be used as a sealing nail of the liquid injection hole 102, thereby reducing the procedures of sealing the glue nail and improving the efficiency in the manufacturing process of the battery; thirdly, when the internal pressure F of the battery is equal to or greater than the threshold value, the gas inside the battery can be discharged by the gas discharge device 2, so that the internal pressure F of the battery can be ensured to be in a relatively constant range, and the expansion force cycle test of the battery can be improved.
Another object of the present invention is to provide a battery, including the battery cover plate according to the embodiment of the present invention.
Compared with the prior art, the utility model discloses an advantage that the battery has with the utility model discloses the battery cover plate has the advantage the same, and it is no longer repeated here.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A battery cover plate, comprising:
the battery cover plate comprises a cover plate body (1), wherein a connecting hole (101) and a liquid injection hole (102) are formed in the cover plate body (1) and are communicated from top to bottom, the inner diameter of the connecting hole (101) is larger than that of the liquid injection hole (102), and the liquid injection hole (102) is used for injecting liquid into a battery;
and the exhaust device (2) is connected with the connecting hole (101) after the battery liquid injection is finished, and is used for closing the liquid injection hole (102) and exhausting the gas inside the battery when the internal pressure of the battery is greater than or equal to a threshold value.
2. The battery cover plate according to claim 1, wherein the vent device (2) comprises a cover body (201) and an elastic component (202), an outer peripheral surface of the cover body (201) is fixedly connected with a hole wall surface of the connecting hole (101), the cover body (201) is provided with a cavity with a downward opening, a vent channel (2011) is arranged in a side wall of the cover body (201), the vent channel (2011) is provided with a vent inlet (20111) and a vent outlet (20112), the vent inlet (20111) is arranged on an inner peripheral surface of a wall body of the cover body (201), the elastic component (202) is arranged in the cavity, and the elastic component (202) is used for blocking the vent inlet (20111) when the internal pressure of the battery is less than a threshold value and for opening the vent inlet (20111) when the internal pressure of the battery is greater than or equal to the threshold value.
3. The battery cover plate according to claim 2, wherein an inner protrusion (2012) below the exhaust inlet (20111) is disposed on an inner peripheral wall of the lower end of the cover (201), the upper end of the elastic member (202) is connected to the concave bottom surface of the cavity, and the lower end of the elastic member (202) is abutted against the inner protrusion (2012) in a vertically movable manner.
4. The battery cover plate according to claim 3, wherein the elastic member (202) comprises a spring (2021) and a sealing sheet (2022), an upper end of the spring (2021) is connected to the concave bottom surface of the concave cavity, a lower end of the spring (2021) is connected to the sealing sheet (2022), and the sealing sheet (2022) is used for sealing the exhaust inlet (20111) when the internal pressure of the battery is less than a threshold value and for opening the exhaust inlet (20111) when the internal pressure of the battery is greater than or equal to the threshold value.
5. The battery cover plate according to claim 4, characterized in that the plugging sheet (2022) is a polytetrafluoroethylene sheet.
6. The battery cover plate according to claim 2, wherein the cover body (201) is an aluminum cover body.
7. The battery cover plate according to claim 2, wherein the outer peripheral surface of the lid body (201) is screwed to the hole wall surface of the attachment hole (101).
8. The battery lid according to any one of claims 2 to 7, wherein a shoulder is formed between the connection hole (101) and the liquid injection hole (102), and a lower end surface of the lid body (201) abuts against the shoulder.
9. The battery cover plate according to any one of claims 2 to 7, wherein the top of the cover body (201) is provided with a sunken groove (2013), and the side wall of the sunken groove (2013) is provided with a chamfer opening (2014).
10. A battery comprising a battery cover plate according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223196163.0U CN218677348U (en) | 2022-11-30 | 2022-11-30 | Battery cover plate and battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223196163.0U CN218677348U (en) | 2022-11-30 | 2022-11-30 | Battery cover plate and battery |
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| Publication Number | Publication Date |
|---|---|
| CN218677348U true CN218677348U (en) | 2023-03-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202223196163.0U Active CN218677348U (en) | 2022-11-30 | 2022-11-30 | Battery cover plate and battery |
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| CN (1) | CN218677348U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116914363A (en) * | 2023-07-24 | 2023-10-20 | 中创新航科技集团股份有限公司 | Battery, method for manufacturing the same, and battery device |
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- 2022-11-30 CN CN202223196163.0U patent/CN218677348U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116914363A (en) * | 2023-07-24 | 2023-10-20 | 中创新航科技集团股份有限公司 | Battery, method for manufacturing the same, and battery device |
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