Cover plate structure and battery
By designing fluid replenishment holes and annular grooves on the battery cover structure and using sealing components to achieve sealing, the problem of the battery being unable to replenish fluid is solved, extending the battery life and reducing costs.
Patent Information
- Application Number
- CN202420754385.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-12
- Publication Date
- 2025-03-07
- Estimated Expiration
- 2034-04-12
AI Technical Summary
During use, the liquid injection port is sealed and welded, and the liquid can no longer be refilled, resulting in loss of electrolyte and short battery life.
A cover plate structure is designed, with a fluid replenishment hole opened on the cover body and an annular groove is set around the fluid replenishment hole. The fluid replenishment hole is sealed and sealed through the sealing component (including fasteners and seals) to ensure the sealing of the fluid replenishment hole.
Through the liquid replenishment hole in the cover plate structure, the battery can be replenished, which can extend the battery's circulation life, reduce the battery cost, and enhance the sealing ability and reduce the adverse risks during the liquid replenishment process through the full filling of the seal and the fastening connection of the fastener.
Smart Images
Figure CN222581320U_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the field of battery technology, and in particular to a cover plate structure and a battery. Background Art
[0002] During the manufacturing process of the battery, the battery will be injected once and twice through the injection hole to fully absorb the electrolyte inside the battery, and finally the battery injection port will be sealed and welded. During the use of the battery, the electrolyte will be lost during the cyclic charging and discharging process. Since the injection port has been sealed and welded, when the electrolyte reaches the consumption value, the battery can no longer be replenished, resulting in the battery not being fully utilized and a short service life. Utility Model Content
[0003] The present disclosure provides a cover plate structure and a battery to at least solve the above technical problems existing in the prior art.
[0004] According to a first aspect of the present disclosure, there is provided a cover plate structure, comprising:
[0005] The cover body has a receiving groove, a liquid replenishing hole is formed on the bottom surface of the receiving groove, and an annular groove is formed on the bottom surface of the receiving groove and in the circumference of the liquid replenishing hole; and
[0006] The sealing component includes a fastener and a sealing member, wherein the sealing member is laid on the bottom surface of the receiving groove and covers the liquid replenishing hole, the fastener is in contact with the sealing member, a part of the sealing member is filled in the annular groove, and the fastener is tightly connected to the receiving groove.
[0007] In one possible implementation manner, the fastener includes a head and a connecting portion that are fixedly connected, and the connecting portion is threadedly connected to the receiving groove.
[0008] In one embodiment, a protrusion is provided on the end surface of the connecting portion away from the head, and the protrusion is contoured with the annular groove; wherein, when the fastener is fastened to the accommodating groove, the position of the protrusion corresponds to that of the annular groove.
[0009] In one embodiment, the seal includes a first surface abutting the connecting portion and a second surface opposite to the first surface, and the second surface is provided with an annular protrusion that is shaped like the annular groove; wherein, when the fastener is fastened to the accommodating groove, the annular protrusion fills the annular groove.
[0010] In one embodiment, the width of the annular protrusion is the same as the width of the annular groove.
[0011] In one possible implementation, the width of the protrusion is less than or equal to the width of the annular groove.
[0012] In one embodiment, the annular groove is arranged concentrically with the fluid infusion hole.
[0013] In one possible implementation, the accommodating groove includes a stepped portion, and the stepped portion is used to accommodate the head.
[0014] In one embodiment, a notch is provided on a surface of the head away from the connecting portion.
[0015] According to a second aspect of the present disclosure, a battery is provided, comprising a housing and a battery cell in the housing, and also comprising a cover structure as described in any one of the above embodiments, wherein the cover structure is connected to the housing.
[0016] In the present disclosure, since a refilling hole is provided on the cover body of the cover plate structure, the battery can be refilled through the refilling hole, thereby increasing the battery cycle life and saving battery costs; the sealing component is connected to the receiving groove of the cover body to seal the refilling hole, thereby preventing foreign matter from entering the refilling hole, so as to reduce the risk of adverse effects during the battery refilling process; in addition, since an annular groove is provided at the bottom of the receiving groove and circumferentially of the refilling hole, part of the sealing member can be fully filled in the annular groove, further enhancing the sealing performance, and at the same time preventing foreign matter generated when the fastener is tightly connected to the receiving groove from entering the refilling hole.
[0017] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present disclosure, nor is it intended to limit the scope of the present disclosure. Other features of the present disclosure will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The above and other objects, features and advantages of the exemplary embodiments of the present disclosure will become readily understood by reading the detailed description below with reference to the accompanying drawings. In the accompanying drawings, several embodiments of the present disclosure are shown in an exemplary and non-limiting manner, in which:
[0019] In the drawings, the same or corresponding reference numerals represent the same or corresponding parts.
[0020] Figure 1 The overall structural schematic diagram of a cover plate structure of an exemplary embodiment of the present disclosure is shown;
[0021] Figure 2 A schematic diagram showing the overall structure of a cover body of a cover plate structure according to an exemplary embodiment of the present disclosure is shown;
[0022] Figure 3 The overall structure diagram of the fastener of the cover structure of an exemplary embodiment of the present disclosure is shown. Figure 1 ;
[0023] Figure 4 The overall structure diagram of the fastener of the cover structure of an exemplary embodiment of the present disclosure is shown. Figure 2 ;
[0024] Figure 5 The overall structure of the sealing member of the cover plate structure of an exemplary embodiment of the present disclosure is shown. Figure 1 ;
[0025] Figure 6 The overall structure of the sealing member of the cover plate structure of an exemplary embodiment of the present disclosure is shown. Figure 2 ;
[0026] Figure 7 The overall structure of the cover plate structure of an exemplary embodiment of the present disclosure is shown in cross section. Figure 1 ;
[0027] Figure 8 The overall structure of the cover plate structure of an exemplary embodiment of the present disclosure is shown in cross section. Figure 2 ;
[0028] Fig. 9 The overall structure schematic diagram of a battery according to an exemplary embodiment of the present disclosure is shown.
[0029] Explanation of the numbers in the figure: 1, cover body; 2, sealing assembly; 3, shell; 10, accommodating groove; 21, fastener; 22, sealing member; 101, liquid replenishing hole; 102, annular groove; 103, stepped portion; 211, head; 212, connecting portion; 221, first surface; 222, second surface; 2111, recess; 2121, protrusion; 2221, annular protrusion. DETAILED DESCRIPTION
[0030] In order to make the purpose, features, and advantages of the present disclosure more obvious and easy to understand, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present disclosure.
[0031] The embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings.
[0032] Reference Figure 1 and Figure 2As shown, a cover plate structure of an exemplary embodiment of the present invention includes a cover body 1 and a sealing assembly 2, the cover body 1 has a receiving groove 10, a liquid replenishing hole 101 is opened on the bottom surface of the receiving groove 10, and an annular groove 102 is arranged on the bottom surface of the receiving groove 10 and in the circumference of the liquid replenishing hole 101; the sealing assembly 2 includes a fastener 21 and a sealing member 22, the sealing member 22 is laid on the bottom surface of the receiving groove 10 and covers the liquid replenishing hole 101, the fastener 21 is in contact with the sealing member 22, a part of the sealing member 22 is fully filled in the annular groove 102, and the fastener 21 is firmly connected to the receiving groove 10.
[0033] In this embodiment, the plugging assembly 2 is used to seal the liquid replenishing hole 101 on the cover plate, and the sealing member 22 is a closed shape, which can be laid on the bottom of the receiving groove 10 and cover the liquid replenishing hole 101. In the process of fastening the fastener 21 and the receiving groove 10, the fastener 21 squeezes the sealing member 22, causing the sealing member 22 to be squeezed and deformed. Under the action of force, part of the sealing member 22 on the side of the sealing member 22 away from the fastener 21 is fully filled into the annular groove 102, thereby forming a sealing surface to prevent foreign matter from entering the liquid replenishing hole 101. Among them, the sealing member 22 can specifically be made of rubber elastic material, and the fastener 21 and the receiving groove 10 can be connected by means including but not limited to threaded connection or clamping connection, which can prevent the fastener 21 from loosening and prevent the sealing member 22 from falling off. Since a refilling hole 101 is provided on the cover body 1 of the cover plate structure, the battery can be refilled through the refilling hole 101, thereby increasing the battery cycle life and saving battery costs; the sealing component 2 is connected to the receiving groove 10 of the cover body 1 to seal the refilling hole 101, thereby preventing foreign matter from entering the refilling hole 101, so as to reduce the risk of adverse effects during battery refilling; in addition, since an annular groove 102 is provided at the bottom of the receiving groove 10 and circumferentially of the refilling hole 101, part of the sealing member 22 can be fully filled in the annular groove 102, thereby further enhancing the sealing performance, and at the same time preventing foreign matter generated when the fastener 21 is fastened to the receiving groove 10 from entering the refilling hole 101.
[0034] Reference Figure 3 , Figure 5 , Figure 6 and Figure 7 As shown, and in one embodiment, the fastener 21 includes a fixed connection head 211 and a connection portion 212 , and the connection portion 212 is threadedly connected to the receiving groove 10 .
[0035] Further, in one embodiment, the sealing member 22 includes a first surface 221 abutting against the connecting portion 212 and a second surface 222 opposite to the first surface 221, and an annular protrusion 2221 conforming to the annular groove 102 is provided on the second surface 222 of the sealing member 22. When the fastener 21 is fastened to the receiving groove 10, the annular protrusion 2221 fills the annular groove 102.
[0036] In this embodiment, the fastener 21 is generally including but not limited to screws or rubber plugs, and the connection portion 212 has a threaded design on the circumference, and accordingly, the inner wall where the receiving groove 10 and the connection portion 212 are connected has a threaded structure, so that the connection portion 212 and the receiving groove 10 can be matched and connected. It can be understood that the connection portion 212 can also be a smooth surface on the circumference, and accordingly, the inner wall where the receiving groove 10 and the connection portion 212 are in contact can also be a smooth inner wall. In this case, the fastener 21 can specifically be a rubber plug, which can be tightly fixed with the receiving groove 10 without falling off. The end surface of the connecting portion 212 of the fastener 21 away from the head 211 is a plane. Since the seal 22 is laid on the bottom of the accommodating groove 10, during the process of fastening the fastener 21 and the accommodating groove 10, the connecting portion 212 of the fastener 21 abuts against and squeezes the first surface 221 of the seal 22. Under the action of force, the annular protrusion 2221 of the seal 22 is fully squeezed into the annular groove 102, thereby forming a sealing surface to prevent foreign matter from entering the liquid replenishing hole 101.
[0037] Reference Figure 4 , Figure 5 , Figure 6 and Figure 8 As shown, in one embodiment, a protrusion 2121 is provided on the end surface of the connecting portion 212 of the fastener 21 away from the head 211, and the protrusion 2121 is contoured with the annular groove 102. When the fastener 21 is fastened to the receiving groove 10, the position of the protrusion 2121 corresponds to that of the annular groove 102.
[0038] In this embodiment, the fastener 21 is generally including but not limited to screws or rubber plugs, and the connection portion 212 has a threaded design on the circumference, and accordingly, the inner wall where the receiving groove 10 and the connection portion 212 are connected has a threaded structure, so that the connection portion 212 and the receiving groove 10 can be matched and connected. It can be understood that the connection portion 212 can also be a smooth surface on the circumference, and accordingly, the inner wall where the receiving groove 10 and the connection portion 212 are in contact can also be a smooth inner wall. In this case, the fastener 21 can specifically be a rubber plug, which can be tightly fixed with the receiving groove 10 without falling off. The second surface 222 of the sealing member 22 may be a plane, or an annular convex portion 2221 may be provided on the second surface 222. When the second surface 222 of the sealing member 22 is a plane, since the end surface of the connecting portion 212 of the fastener 21 away from the head 211 is provided with a protrusion 2121, the protrusion 2121 can be completely placed in the annular groove 102 without the obstruction of the sealing member 22. Therefore, since the sealing member 22 is laid on the bottom of the receiving groove 10, by providing the protrusion 2121 on the connecting portion 212, during the process of fastening the fastener 21 to the receiving groove 10, the protrusion 2121 abuts against the first surface 221 of the sealing member 22 and squeezes the sealing member 22. Under the action, the position of the seal 22 in contact with the protrusion 2121 is deformed, and part of the seal 22 is squeezed into the annular groove 102, thereby forming a sealing surface; when the second surface 222 of the seal 22 is provided with an annular protrusion 2221, the seal 22 is laid on the bottom of the accommodating groove 10, and the protrusion 2121 is provided on the connecting portion 212. During the process of fastening the fastener 21 to the accommodating groove 10, the protrusion 2121 abuts against the first surface 221 of the seal 22 and squeezes the seal 22. Under the action of force, the annular protrusion 2221 of the seal 22 is fully squeezed into the annular groove 102, thereby forming a sealing surface, blocking foreign matter from entering the liquid replenishing hole 101.
[0039] In one embodiment, the width of the annular protrusion 2221 is the same as the width of the annular groove 102 .
[0040] In this embodiment, the width of the annular protrusion 2221 is designed to be the same as the width of the annular groove 102, so that the annular protrusion 2221 can be fully filled in the annular groove 102 to form a sealing surface to prevent foreign matter from entering the liquid replenishing hole 101. It can be understood that since the annular protrusion 2221 is made of rubber elastic material and can be elastically deformed, the width of the annular protrusion 2221 can also be slightly larger than the width of the annular groove 102. The annular protrusion 2221 is squeezed into the annular groove 102 by force, so that the annular protrusion 2221 is fully in contact with the annular groove 102.
[0041] In one embodiment, the width of the protrusion 2121 is less than or equal to the width of the annular groove 102 .
[0042] In this embodiment, by designing the width of the protrusion 2121 to be less than or equal to the width of the annular groove 102 , the protrusion 2121 is prevented from interfering with the bottom surface of the accommodating groove 10 , resulting in a failure to squeeze part of the sealing member 22 into the annular groove 102 .
[0043] In one embodiment, the annular groove 102 is concentrically disposed with the liquid replenishing hole 101 .
[0044] In this embodiment, the annular groove 102 is arranged concentrically with the liquid replenishing hole 101, so that the manufacturing process of the protrusion 2121 on the fastener 21 and the annular protrusion 2221 on the seal 22 is more convenient and quick, and the matching installation process of the sealing component 2 and the accommodating groove 10 is more convenient and efficient.
[0045] In one embodiment, the receiving groove 10 includes a stepped portion 103 , and the stepped portion 103 is used to receive the head 211 of the fastener 21 .
[0046] In this embodiment, the stepped portion 103 can be understood as a countersunk hole, and the head 211 of the fastener 21 is located in the stepped portion 103 , so that the fastener 21 can be completely sunk into the receiving groove 10 .
[0047] In one embodiment, a notch 2111 is disposed on a surface of the head 211 of the fastener 21 away from the connecting portion 212 .
[0048] In this embodiment, the notch 2111 may be in a straight shape or a cross shape, etc., and can be screwed with a screwdriver to lock and loosen the fastener 21.
[0049] Reference Fig. 9 As shown, the present disclosure further provides a battery, including a shell 3 and a battery cell located in the shell 3, and also includes a cover structure as in any one of the above-mentioned embodiments, and the cover structure is connected to the shell 3.
[0050] In the present embodiment, since the battery includes a cover plate structure, the problem that the battery cannot be refilled can be solved, the battery cycle life is improved, and the battery cost is saved; the cover plate structure also generally connects the sealing component 2 with the receiving groove 10 of the cover body 1, and seals the refill hole 101, thereby preventing foreign matter from entering the refill hole 101, so as to reduce the risk of adverse effects during battery refilling; in addition, since an annular groove 102 is provided at the bottom of the receiving groove 10 and circumferentially of the refill hole 101, part of the sealing member 22 can be fully filled in the annular groove 102, thereby further enhancing the sealing performance, and at the same time, it can also prevent foreign matter generated when the fastener 21 is fastened to the receiving groove 10 from entering the refill hole 101.
[0051] In the description of the present disclosure, it is necessary to understand that the orientation or positional relationship indicated by the directional words is usually based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present disclosure and simplifying the description. Unless otherwise stated, these directional words do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present disclosure; the directional words "inside" and "outside" refer to the inside and outside relative to the outline of each component itself.
[0052] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between one or more components or features shown in the figure and other components or features. It should be understood that spatially relative terms include not only the orientation of the components as described in the figure, but also different orientations in use or operation. For example, if the components in the accompanying drawings are inverted as a whole, the components "above other components or features" or "above other components or features" will include the situation where the components are "below other components or structures" or "below other components or structures". Therefore, the exemplary term "above" may include both "above" and "below". In addition, these components or features may also be positioned at other different angles (e.g., rotated 90 degrees or other angles), and this article is intended to include all of these situations.
[0053] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present disclosure. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, parts, components and / or combinations thereof.
[0054] It should be noted that the terms "first", "second", etc. in the specification and claims of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present disclosure described herein can be implemented in an order other than those illustrated or described herein.
[0055] The present disclosure has been described through the above-mentioned embodiments, but it should be understood that the above-mentioned embodiments are only for the purpose of example and description, and are not intended to limit the present disclosure to the scope of the described embodiments. In addition, it can be understood by those skilled in the art that the present disclosure is not limited to the above-mentioned embodiments, and more variations and modifications can be made according to the teachings of the present disclosure, and these variations and modifications all fall within the scope of protection claimed by the present disclosure. The scope of protection of the present disclosure is defined by the attached claims and their equivalents.
Claims
1. A cover plate structure, characterized in that: include: The cover body (1) has a receiving groove (10), a liquid replenishing hole (101) is provided on the bottom surface of the receiving groove (10), and an annular groove (102) is provided on the bottom surface of the receiving groove (10) and in the circumferential direction of the liquid replenishing hole (101); and The plugging assembly (2) comprises a fastener (21) and a sealing member (22), wherein the sealing member (22) is laid on the bottom surface of the receiving groove (10) and covers the liquid replenishing hole (101), the fastener (21) and the sealing member (22) are in contact with each other, a portion of the sealing member (22) is filled in the annular groove (102), and the fastener (21) is firmly connected to the receiving groove (10).
2. The cover plate structure according to claim 1, characterized in that: The fastener (21) comprises a fixedly connected head (211) and a connecting portion (212), wherein the connecting portion (212) is threadedly connected to the accommodating groove (10).
3. The cover plate structure according to claim 2, characterized in that: A protrusion (2121) is provided on the end surface of the connecting portion (212) away from the head portion (211), and the protrusion (2121) is contoured with the annular groove (102); wherein when the fastener (21) is fastened to the accommodating groove (10), the position of the protrusion (2121) corresponds to that of the annular groove (102).
4. The cover plate structure according to claim 2 or 3, characterized in that: The sealing member (22) comprises a first surface (221) abutting against the connecting portion (212) and a second surface (222) opposite to the first surface (221), and the second surface (222) is provided with an annular protrusion (2221) conforming to the annular groove (102); wherein when the fastener (21) is fastened to the receiving groove (10), the annular protrusion (2221) fills the annular groove (102).
5. The cover plate structure according to claim 4, characterized in that: The width of the annular protrusion (2221) is the same as the width of the annular groove (102).
6. The cover plate structure according to claim 3, characterized in that: The width of the protrusion (2121) is less than or equal to the width of the annular groove (102).
7. The cover plate structure according to claim 1, characterized in that: The annular groove (102) is arranged concentrically with the liquid replenishing hole (101).
8. The cover plate structure according to claim 2, characterized in that: The accommodating groove (10) comprises a stepped portion (103), and the stepped portion (103) is used to accommodate the head portion (211).
9. The cover plate structure according to claim 2, characterized in that: A notch (2111) is provided on a surface of the head (211) away from the connecting portion (212).
10. A battery, comprising a housing (3) and a battery cell located in the housing (3), characterized in that: It also comprises a cover plate structure as claimed in any one of claims 1 to 9, wherein the cover plate structure is connected to the housing (3).