Battery cover plate

Abstract

The utility model relates to battery technical field, the utility model provides a battery cover plate, including the cover plate body, the lower plastic is located one side of cover plate body, and the lower plastic side away from cover plate body is equipped with the mounting groove, and, the pole is located the mounting groove, and the through -hole is seted up on the at least one side wall of mounting groove, and the through -hole is linked together with the mounting groove. The battery cover plate provided by the utility model aims at solving the problem that the lithium dendrite is formed at the pole in the traditional technology, and the lithium dendrite growth is connected with the pole and the cover plate body, which can easily cause the short circuit of the battery.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a battery cover. Background Technology

[0002] During battery use, as electrolyte accumulates over a long period of time, lithium dendrites can easily form at the terminals. As these lithium dendrites grow, they can connect the terminals and the cover plate, causing a short circuit and affecting the battery's performance. Utility Model Content

[0003] This utility model provides a battery cover plate, which aims to solve the problem that in traditional technology, the electrolyte in the battery tends to accumulate over a long period of time, easily forming lithium dendrites at the terminals. The lithium dendrites connecting the terminals and the cover plate can easily lead to a short circuit in the battery.

[0004] To address the problems existing in the prior art, this utility model provides a battery cover, comprising:

[0005] Cover plate body;

[0006] A lower plastic insert is disposed on one side of the cover plate body, and the side of the lower plastic insert opposite to the cover plate body has a mounting groove; and,

[0007] An electrode post is disposed in the mounting groove, and at least one side wall of the mounting groove has a through hole, which communicates with the mounting groove.

[0008] According to the present invention, a battery cover plate has a mounting groove having a first sidewall and a second sidewall disposed opposite to each other along the length direction of the cover plate body, and at least one through hole is provided on the second sidewall.

[0009] According to the present invention, a battery cover plate has a mounting groove having a third sidewall and a fourth sidewall disposed opposite to each other along the width direction of the cover plate body, and at least one of the third sidewall or the fourth sidewall is provided with the through hole.

[0010] According to the present invention, a battery cover plate is provided in which the through hole is disposed away from the first side wall.

[0011] According to the present invention, the bottom wall height of the through hole is equal to the bottom wall height of the mounting groove.

[0012] According to the present invention, the battery cover plate has a through hole with a side length of 1-4 mm along the width direction of the cover plate body.

[0013] According to the present invention, the battery cover plate has a side length of the through hole along the height direction of the cover plate body, which is 0.3-0.5 times the height of the side wall of the mounting groove in which it is located.

[0014] According to the present invention, the through hole of a battery cover is triangular, square or circular.

[0015] According to the present invention, a battery cover plate is provided with a plurality of first reinforcing ribs on the side of the lower plastic away from the cover plate body, and each of the first reinforcing ribs is arranged sequentially at intervals along the width direction of the cover plate body; the lower plastic has two lower plastic sidewalls arranged opposite to each other along the width direction of the cover plate body, and two adjacent first reinforcing ribs and the lower plastic sidewalls enclose each other to form the mounting groove.

[0016] According to the present invention, a battery cover is provided on the side of the lower plastic away from the cover body, and the second reinforcing rib extends along the length direction of the cover body and intersects with the first reinforcing rib.

[0017] The battery cover provided by this utility model can effectively drain the electrolyte in the mounting groove when the battery cover is in the installation state by setting through holes on the side wall other than the first side wall. This prevents the electrolyte from accumulating on the electrode for a long time and growing lithium dendrites, which could lead to a short circuit in the battery. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of the first embodiment of the battery cover provided by this utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the second embodiment of the battery cover provided by this utility model;

[0021] Figure 3 This is a structural schematic diagram of the third embodiment of the battery cover provided by this utility model.

[0022] Reference numerals: 1. Cover plate body; 2. Lower plastic; 21. Mounting groove; 22. First side wall; 23. Second side wall; 24. Third side wall; 25. Fourth side wall; 26. Through hole; 27. First reinforcing rib; 28. Second reinforcing rib; 29. ​​Lower plastic side wall; 3. Pole post. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0024] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model based on the specific circumstances.

[0025] In the description of the embodiments of this utility model, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and 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. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0027] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0028] The following disclosure provides numerous different embodiments or examples for implementing various structures of the present invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention; however, those skilled in the art will recognize the applicability of other processes and / or the use of other materials.

[0029] The following is combined with Figures 1-3 This utility model describes the battery cover plate provided.

[0030] Given that in conventional technologies, prolonged electrolyte buildup can easily lead to lithium dendrite formation at terminal 3, and the connection between the lithium dendrite and the cover plate can cause a short circuit, please refer to [link to relevant documentation] for information on the problems with existing technologies. Figures 1-3 This utility model provides a battery cover plate, including a cover plate body 1, a lower plastic 2, and an electrode post 3.

[0031] The cover plate body 1 is generally provided with a liquid injection hole and an explosion-proof valve on one side, and a lower plastic 2 on the other side. As an indispensable part of the battery, the cover plate is used to seal the end of the battery and play a role in sealing the battery installation.

[0032] The lower plastic 2 is located on one side of the cover plate body 1. The side of the lower plastic 2 away from the cover plate body 1 is provided with an installation groove 21. The pole post 3 is located in the installation groove 21. The installation groove 21 can play a role in positioning and installing the pole post 3, which facilitates the stable installation of the pole post 3.

[0033] In the technical solution provided by this utility model, at least one side wall of the mounting groove 21 is provided with a through hole 26, which communicates with the mounting groove 21. When there is electrolyte in the mounting groove 21, the electrolyte can leak out from the through hole 26 in time without accumulating in the mounting groove 21, which can effectively prevent the growth of lithium dendrites in the mounting groove 21 and thus prevent the battery from short-circuiting.

[0034] In an optional embodiment, the mounting groove 21 has a first sidewall 22 and a second sidewall 23 disposed opposite to each other along the length direction of the cover plate body 1, and at least one through hole 26 is formed on the second sidewall 23. See also... Figure 1The mounting groove 21 is rectangular, with the first sidewall 22 at the highest point and the second sidewall 23 at the lowest point. Through holes 26 are provided in the second sidewall 23 to quickly drain the electrolyte and prevent the growth of lithium dendrites. It should be noted that one or more through holes 26 can be provided in the second sidewall 23, depending on the size of the through holes 26 and the area of ​​the second sidewall 23; this invention does not impose any limitation on this.

[0035] Further, please refer to Figure 3 The mounting groove 21 has a third sidewall 24 and a fourth sidewall 25 disposed opposite to each other along the width direction of the cover plate body 1, and at least one of the third sidewall 24 or the fourth sidewall 25 is provided with a through hole 26. In addition to the second sidewall 23, the through hole 26 can also be provided on the third sidewall 24 or the fourth sidewall 25; one or more of the three can be selected for the through hole 26, and this utility model does not limit this. It should be noted that when the through hole 26 is provided on the third sidewall 24 or the fourth sidewall 25, the through hole 26 needs to be located away from the first sidewall 22, preferably close to the second sidewall 23, so that the position of the through hole 26 is low, allowing for timely discharge of electrolyte.

[0036] Furthermore, to ensure timely discharge of electrolyte, the bottom wall height of the through hole 26 is equal to the bottom wall height of the mounting tank 21. This prevents the formation of a step at the through hole 26 that could obstruct electrolyte discharge. When electrolyte accumulates in the mounting tank 21, the electrolyte can be quickly discharged through the through hole 26 because the bottom wall height of the through hole 26 is equal to that of the mounting tank 21.

[0037] To prevent the through hole 26 from being too large and affecting the strength of the mounting groove 21, in the technical solution provided by this utility model, the side length of the through hole 26 along the width direction of the cover plate body 1 is 1-4mm, that is, the width of the through hole 26 is 1-4mm; the ratio of the side length of the through hole 26 along the height direction of the cover plate body 1, that is, the height of the through hole 26, to the height of the side wall of the mounting groove 21 is 0.3-0.5. With this setting, the size of the through hole 26 is reasonable and will not affect the strength of the mounting groove 21.

[0038] Specifically, the shape of the through hole 26 can be various, such as triangular, square or circular. In other optional embodiments, the through hole 26 can also be set as irregular or polygonal, and this utility model does not limit it in this regard.

[0039] Further, please refer to Figure 2The lower plastic 2 has multiple first reinforcing ribs 27 on the side opposite to the cover plate body 1. These first reinforcing ribs 27 are arranged at intervals along the width direction of the cover plate body 1, enhancing the strength of the lower plastic 2. Furthermore, the lower plastic 2 has two lower plastic sidewalls 29 arranged opposite each other along the width direction of the cover plate body 1. Two adjacent first reinforcing ribs 27 and the lower plastic sidewalls 29 enclose each other to form a mounting groove 21. When the mounting groove 21 needs to be set to other shapes, the shape of the reinforcing ribs can be adjusted; if necessary, the reinforcing ribs can be directly arranged to form the mounting groove 21. It should be noted that when multiple through holes 26 are provided on the second sidewall 23, one through hole 26 can be provided on each side of the second reinforcing rib 28.

[0040] In order to uniformly strengthen the lower plastic 2, a second reinforcing rib 28 is provided on the side of the lower plastic 2 away from the cover plate body 1. The second reinforcing rib 28 extends along the length direction of the cover plate body 1 and is arranged to intersect with the first reinforcing rib 27.

[0041] This utility model also provides a battery, including the battery cover as described above. Based on this, this utility model also provides a vehicle, including the battery as described above. Since the main utility model feature lies in the battery cover, the structure of the battery and the vehicle will not be described in detail.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A battery cover, characterized in that, include: Cover plate body; The lower plastic is located on one side of the cover plate body, and the side of the lower plastic away from the cover plate body is provided with an installation groove; as well as, An electrode post is disposed in the mounting groove, and at least one side wall of the mounting groove has a through hole, which communicates with the mounting groove.

2. The battery cover according to claim 1, characterized in that, The mounting groove has a first sidewall and a second sidewall that are arranged opposite to each other along the length of the cover plate body, and at least one through hole is provided on the second sidewall.

3. The battery cover according to claim 2, characterized in that, The mounting groove has a third sidewall and a fourth sidewall disposed opposite to each other along the width direction of the cover plate body, and at least one of the third sidewall or the fourth sidewall is provided with the through hole.

4. The battery cover according to claim 3, characterized in that, The through hole is located away from the first sidewall.

5. The battery cover according to claim 1, characterized in that, The bottom wall height of the through hole is equal to the bottom wall height of the mounting groove.

6. The battery cover according to claim 1, characterized in that, The side length of the through hole along the width direction of the cover plate body is 1-4mm.

7. The battery cover according to claim 1, characterized in that, The ratio of the side length of the through hole along the height direction of the cover plate body to the height of the side wall of the mounting groove it is located in is 0.3-0.

5.

8. The battery cover according to claim 1, characterized in that, The through hole can be triangular, square, or circular.

9. The battery cover according to claim 1, characterized in that, The lower plastic has a plurality of first reinforcing ribs on the side opposite to the cover plate body, and each of the first reinforcing ribs is arranged sequentially at intervals along the width direction of the cover plate body; the lower plastic has two lower plastic sidewalls arranged opposite to each other along the width direction of the cover plate body, and two adjacent first reinforcing ribs and the lower plastic sidewalls enclose each other to form the mounting groove.

10. The battery cover according to claim 9, characterized in that, The lower plastic part facing away from the cover plate body is also provided with a second reinforcing rib, which extends along the length of the cover plate body and intersects with the first reinforcing rib.

Images