Battery monomer

Abstract

The utility model discloses a battery monomer and relates to the field of batteries. The single battery comprises a shell and a battery cell arranged in the shell, and the shell is provided with an exhaust hole; the single battery further comprises an adjustable sealing assembly, the adjustable sealing assembly is in threaded fit with the shell, the exhaust hole is covered with the outer side of the shell, and the adjustable sealing assembly is used for being stressed to rotate relative to the shell so as to adjust the sealing degree of the exhaust hole. The battery monomer provided by the utility model can actively or passively complete pressure relief under the condition that the shell structure is not damaged, and has higher safety.

Description

Technical Field

[0001] This utility model relates to the field of batteries, and more specifically, to a battery cell. Background Technology

[0002] Currently, batteries on the market are equipped with explosion-proof valves. These explosion-proof valves are usually formed by reducing the thickness of the outer shell. When the internal pressure of the battery rises to a certain level, the explosion-proof valve ruptures to release the pressure and prevent the battery from exploding.

[0003] When the explosion-proof valve is opened, the battery casing structure will be damaged, causing the battery to fail and become unusable. Utility Model Content

[0004] The purpose of this invention is to provide a battery cell that can release internal pressure without damaging its own structure, thus providing higher safety.

[0005] The embodiments of this utility model provide a technical solution:

[0006] A battery cell includes a housing and a battery cell disposed within the housing, the housing being provided with a vent hole;

[0007] The battery cell also includes an adjustable sealing assembly, which is threadedly engaged with the housing and covers the vent hole from the outside of the housing. The adjustable sealing assembly is used to rotate relative to the housing under force to adjust the sealing degree of the vent hole.

[0008] In an optional embodiment, the adjustable sealing assembly includes:

[0009] An elastic sealing gasket covers the vent hole from one side of the housing;

[0010] An adjustment component is threaded into the housing and presses the elastic sealing gasket against the surface of the housing. The adjustment component is used to rotate relative to the housing under force to adjust the magnitude of the pressing force applied to the elastic sealing gasket.

[0011] In an optional embodiment, a top cover body is provided on one side wall of the housing. The top cover body includes a cover plate and a valve seat. The valve seat is disposed on the cover plate, the vent is disposed on the cover plate, and the adjusting component is threadedly engaged with the valve seat.

[0012] In an optional embodiment, a recess is provided on one side surface of the cover plate, the vent is provided on the bottom wall of the recess, and the valve seat is embedded in the recess and connected to the cover plate.

[0013] In an optional embodiment, the valve seat is welded to the cover plate, or...

[0014] The valve seat and the cover plate are integrally formed.

[0015] In an optional embodiment, the valve seat is provided with an exhaust channel, one end of which surrounds the exhaust hole, the elastic sealing gasket is housed within the exhaust channel, and the adjusting component passes through the exhaust channel and presses against the elastic sealing gasket.

[0016] In an optional embodiment, the adjusting assembly includes an adjusting nut and a pressure rod, wherein the adjusting nut is disposed on the end of the valve seat away from the vent hole and is threadedly engaged with the outer side wall of the valve seat;

[0017] The pressure rod passes through the exhaust channel, with one end pressing against the elastic sealing gasket and the other end abutting or connecting to the adjusting nut.

[0018] In an optional embodiment, a pressing protrusion is provided on the side wall of the end of the pressure rod away from the adjusting nut, and the pressing protrusion coincides with the periphery of the elastic sealing gasket.

[0019] In an optional embodiment, there is a channel gap between the pressure rod and the channel wall of the exhaust channel, and a pressure relief hole is provided on the adjusting nut. One end of the channel gap is connected to the pressure relief hole, and the other end extends to the elastic sealing gasket.

[0020] In an optional embodiment, the adjusting nut is provided with a supporting part that abuts against the pressure rod, and there are multiple pressure relief holes that are circumferentially distributed around the supporting part.

[0021] Compared to existing technologies, the battery cell provided by this invention allows for adjustment of the sealing degree of the vent by applying force to the adjustable sealing component, causing it to rotate relative to the casing. This adjusts the pressure relief capacity of the vent and achieves pressure relief inside the casing. Active pressure relief can also be achieved by actively rotating the adjustable sealing component. Therefore, the beneficial effects of the battery cell provided by this invention include: the ability to actively or passively relieve pressure without damaging the casing structure, resulting in higher safety. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this utility model and therefore should not be considered as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without any creative effort.

[0023] Figure 1A partial structural schematic diagram of a battery cell provided for an embodiment of this utility model;

[0024] Figure 2 for Figure 1 A schematic diagram of the exploded structure of the middle part;

[0025] Figure 3 for Figure 1 A cross-sectional view of the middle section of the structure.

[0026] Icons: 100-Battery cell; 110-Top cover body; 111-Vent hole; 112-Cover plate; 1121-Recess; 113-Valve seat; 1131-Ventilation channel; 120-Elastic sealing gasket; 121-Channel gap; 130-Adjusting component; 131-Adjusting nut; 1311-Pressure relief hole; 1312-Supporting part; 132-Pressure rod; 1321-Pressure supporting protrusion. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0029] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0030] In the description of this utility model, it should be understood that the terms "upper", "lower", "inner", "outer", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use, or the orientation or positional relationship that is commonly understood by those skilled in the art. They are only used to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0032] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, terms such as "set" and "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0034] Example

[0035] Please refer to the following: Figure 1 , Figure 2 and Figure 3 , Figure 1 The diagram shown is a partial structural schematic of the battery cell 100 provided in this embodiment. Figure 2 As shown Figure 1 A schematic diagram of the exploded structure of the middle part. Figure 3 As shown Figure 1 A cross-sectional view of the middle section of the structure.

[0036] The battery cell 100 provided in this embodiment includes a housing and a battery cell (not shown in the figure) disposed within the housing. The housing is provided with a vent hole 111. The battery cell 100 also includes an adjustable sealing assembly, which is threadedly engaged with the housing and covers the vent hole 111 from the outside of the housing. The adjustable sealing assembly is used to rotate relative to the housing under force to adjust the sealing degree of the vent hole 111.

[0037] The vent 111 can release the internal pressure of the housing, achieving a pressure relief effect. In practical applications, the sealing degree of the vent 111 can be adjusted by applying a force to the adjustable sealing component, causing it to rotate relative to the housing, thereby adjusting the pressure relief capacity of the vent 111.

[0038] It is understandable that the higher the sealing degree of the vent 111, the lower its pressure relief efficiency, and vice versa.

[0039] In practical applications, the internal pressure of the housing is released through the pressure relief hole 1311. When the internal pressure of the housing is high, the sealing performance of the vent hole 111 can be reduced by rotating the adjustable sealing component, thereby improving the pressure relief capacity.

[0040] In cases where the internal pressure of the casing is too high, the sealing performance of the vent 111 can be minimized by rotating the adjustable sealing component significantly, thereby achieving active pressure relief for the battery cell 100.

[0041] In this embodiment, the adjustable sealing assembly includes an elastic sealing gasket 120 and an adjusting assembly 130. The elastic sealing gasket 120 covers the vent hole 111 from one side of the housing. The adjusting assembly 130 is threaded into the housing and presses the elastic sealing gasket 120 against the surface of the housing. The adjusting assembly 130 is used to rotate relative to the housing under force to adjust the magnitude of the pressing force applied to the elastic sealing gasket 120.

[0042] The holding force on the elastic sealing gasket 120 can be increased or decreased by rotating the adjustment component 130. The greater the holding force, the tighter the elastic sealing gasket 120 fits against the housing, the higher the sealing degree of the vent 111, and the lower the pressure relief efficiency. The smaller the holding force, the lower the sealing degree of the vent 111, and the higher the pressure relief efficiency.

[0043] In this embodiment, a top cover body 110 is provided on one side wall of the housing. The top cover body 110 includes a cover plate 112 and a valve seat 113. The valve seat 113 is disposed on the cover plate 112, and the exhaust hole 111 is disposed on the cover plate 112. The adjusting component 130 is threadedly engaged with the valve seat 113.

[0044] It is understood that the top cover body 110 is also provided with structures such as electrodes. In other embodiments, the exhaust port 111 can also be provided on another shell wall of the housing, and the valve seat 113 can be provided on the shell wall where the exhaust port 111 is located.

[0045] In this embodiment, the valve seat 113 is welded to the cover plate 112. In order to obtain a better welding effect, a recess 1121 is provided on one side surface of the cover plate 112, and the exhaust hole 111 is provided on the bottom wall of the recess 1121. The valve seat 113 is embedded in the recess 1121 and connected to the cover plate 112.

[0046] In another embodiment, the valve seat 113 and the cover plate 112 can be connected by other connection methods, and the two can also be integrally formed structures.

[0047] The valve seat 113 is provided with an exhaust passage 1131. One end of the exhaust passage 1131 surrounds the exhaust hole 111. The elastic sealing gasket 120 is housed in the exhaust passage 1131. The adjusting component 130 passes through the exhaust passage 1131 and presses the elastic sealing gasket 120.

[0048] It is understandable that the exhaust passage 1131 provides a pressure relief passage for the exhaust port 111. The gas inside the housing enters the exhaust passage 1131 after passing through the exhaust port 111, and is discharged to the outside through the exhaust passage 1131 to complete the pressure relief.

[0049] The adjusting assembly 130 includes an adjusting nut 131 and a pressure rod 132. The adjusting nut 131 covers the end of the valve seat 113 away from the vent hole 111 and is threaded into the outer wall of the valve seat 113. The pressure rod 132 passes through the vent passage 1131. One end of the pressure rod 132 presses against the elastic sealing gasket 120, and the other end abuts against or connects to the adjusting nut 131.

[0050] In this embodiment, the adjusting nut 131, the pressure rod 132 and the vent hole 111 are coaxially arranged. The pressure rod 132 is located between the elastic sealing gasket 120 and the adjusting nut 131, and is pressed onto the elastic sealing gasket 120 by the adjusting nut 131. The elastic sealing gasket 120 covers the vent hole 111.

[0051] When the adjusting nut 131 is tightened relative to the valve seat 113, the adjusting nut 131 gradually approaches the vent hole 111, causing the pressure rod 132 to gradually press the elastic sealing gasket 120, thus gradually increasing the sealing degree of the vent hole 111. When the adjusting nut 131 is loosened relative to the valve seat 113, the adjusting nut 131 gradually moves away from the vent hole 111, the holding force applied by the pressure rod 132 to the elastic sealing gasket 120 gradually decreases, and the sealing degree of the vent hole 111 gradually decreases. In practical applications, the gas inside the housing is discharged to the outside through the vent hole 111, the gap between the vent hole 111 and the elastic sealing gasket 120, and the vent passage 1131 in sequence.

[0052] In this embodiment, one end of the pressure rod 132 is pressed against the elastic sealing gasket 120, and the other end is pressed against the adjusting nut 131. In another embodiment, the pressure rod 132 can also be connected to the elastic sealing gasket 120 by means of bonding or other methods, and the end of the pressure rod 132 away from the elastic sealing gasket 120 can also be connected to the adjusting nut 131 by means of welding or other methods.

[0053] In order to enable the pressure rod 132 to uniformly press the elastic sealing gasket 120, thereby achieving precise and effective control of the pressure relief efficiency, in this embodiment, a pressing protrusion 1321 is provided on the side wall of the end of the pressure rod 132 away from the adjusting nut 131, and the pressing protrusion 1321 coincides with the periphery of the elastic sealing gasket 120.

[0054] It should be noted that, if the radial dimension of the exhaust passage 1131 is sufficient, the radial dimension of the pressing protrusion 1321 can also be greater than the radial dimension of the elastic sealing gasket 120, that is, the periphery of the pressing protrusion 1321 can also extend beyond the periphery of the elastic sealing gasket 120.

[0055] There is a channel gap 121 between the pressure rod 132 and the channel wall of the exhaust channel 1131. The adjusting nut 131 is provided with a pressure relief hole 1311. One end of the channel gap 121 is connected to the pressure relief hole 1311, and the other end extends to the elastic sealing gasket 120.

[0056] In practical applications, the gas inside the housing enters the exhaust channel 1131 through the exhaust port 111, then passes through the channel gap 121 between the pressure rod 132 and the channel wall of the exhaust channel 1131 into the pressure relief hole 1311 on the adjusting nut 131, and is discharged to the outside after passing through the pressure relief hole 1311, thus completing the pressure relief.

[0057] In order to improve the uniformity and stability of pressure relief and obtain a better pressure relief effect, in this embodiment, the adjusting nut 131 is provided with a supporting part 1312 that supports the pressure rod 132, and there are multiple pressure relief holes 1311, which are distributed circumferentially around the supporting part 1312.

[0058] In summary, the battery cell 100 provided in this embodiment can adjust the sealing degree of the elastic sealing gasket 120 to the vent hole 111 by applying force to the adjusting nut 131 and rotating it relative to the valve seat 113, thereby adjusting the pressure relief capacity of the vent hole 111 and realizing the active or passive release of the internal pressure of the casing.

[0059] Therefore, the battery cell 100 provided by this utility model can actively or passively release pressure without damaging the casing structure, thus providing higher safety.

[0060] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A battery cell, comprising a housing and a cell disposed within the housing, characterized in that, The housing is provided with an exhaust port (111); The battery cell also includes an adjustable sealing assembly, which is threadedly engaged with the housing and covers the vent (111) from the outside of the housing. The adjustable sealing assembly is used to rotate relative to the housing under force to adjust the sealing degree of the vent (111).

2. The battery cell of claim 1, wherein, The adjustable sealing assembly includes: An elastic sealing gasket (120) covers the vent (111) from one side of the housing; An adjusting component (130) is threaded into the housing and presses the elastic sealing gasket (120) against the surface of the housing. The adjusting component (130) is used to rotate relative to the housing under force to adjust the magnitude of the pressing force applied to the elastic sealing gasket (120).

3. The battery cell of claim 2, wherein, A top cover body (110) is provided on one side wall of the housing. The top cover body (110) includes a cover plate (112) and a valve seat (113). The valve seat (113) is disposed on the cover plate (112). The exhaust hole (111) is disposed on the cover plate (112). The adjusting component (130) is threadedly engaged with the valve seat (113).

4. The battery cell of claim 3, wherein, A recess (1121) is provided on one side surface of the cover plate (112), the exhaust hole (111) is provided on the bottom wall of the recess (1121), and the valve seat (113) is embedded in the recess (1121) and connected to the cover plate (112).

5. The battery cell of claim 3, wherein, The valve seat (113) is welded to the cover plate (112), or, The valve seat (113) and the cover plate (112) are integrally formed.

6. The battery cell of claim 3, wherein, The valve seat (113) is provided with an exhaust channel (1131), one end of which surrounds the exhaust hole (111). The elastic sealing gasket (120) is housed in the exhaust channel (1131), and the adjusting component (130) passes through the exhaust channel (1131) and presses the elastic sealing gasket (120).

7. The battery cell of claim 6, wherein, The adjusting assembly (130) includes an adjusting nut (131) and a pressure rod (132). The adjusting nut (131) covers the end of the valve seat (113) away from the exhaust hole (111) and is threadedly engaged with the outer side wall of the valve seat (113). The pressure rod (132) is inserted into the exhaust channel (1131). One end of the pressure rod (132) presses against the elastic sealing gasket (120), and the other end abuts against or connects to the adjusting nut (131).

8. The battery cell of claim 7, wherein, The pressure rod (132) has a pressing protrusion (1321) on the side wall of the end away from the adjusting nut (131), and the pressing protrusion (1321) coincides with the periphery of the elastic sealing gasket (120).

9. The battery cell of claim 7, wherein, There is a channel gap (121) between the pressure rod (132) and the channel wall of the exhaust channel (1131). The adjusting nut (131) is provided with a pressure relief hole (1311). One end of the channel gap (121) is connected to the pressure relief hole (1311), and the other end extends to the elastic sealing gasket (120).

10. The battery cell of claim 9, wherein, The adjusting nut (131) is provided with a supporting part (1312) that supports the pressure rod (132), and there are multiple pressure relief holes (1311), which are distributed circumferentially around the supporting part (1312).

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