The present disclosure relates to the field of battery technologies, and in particular, to a plastic component and a battery having the same.
At present, a plastic component is molded by using injection technology in a molding cavity, with a speed of molding closely related to a thickness of the plastic component. When producing a larger-sized plastic component, a thick plastic component is needed to ensure its strength. However, this results in slower injection molding efficiency or even failure of molding of the plastic component, SUMMARY
The present disclosure proposes a plastic component.
The present disclosure further proposes a battery having the same.
The plastic component according to embodiments of the present disclosure includes a body having a first side surface and a second side surface facing away from the first side surface. The first side surface has a buffer recess recessed towards the second side surface, the buffer recess has at least one flow guide hole penetrating the body in a thickness direction of the body, the second side surface has a connection piece recess recessed towards the first side surface, and the connection piece recess has a pole through hole penetrating the body in the thickness direction of the body.
A battery according to another aspect of the embodiments of the present disclosure includes the plastic component according to the above embodiments of the present disclosure.
The additional aspects and the advantages of the present disclosure will be partially set forth in the following description, and in part will be apparent from the following description, or may be learned by practice of the present disclosure.
plastic component 10; first side surface 1; buffer recess 11; flow guide hole 12; second side surface 2; connection piece recess 21; rounded corner 211; positioning protruding post 212; thinned recess 22; outer peripheral recess wall 221; recess bottom wall 222; outer peripheral surface 3; pole through hole 4; cover plate 20; liquid injection hole 201; connection piece 30; pole connection segment 301; tab connection segment 302; bare cell 40; tab 401; protrusion 402; proximal portion 4021; and distal portion 4022.
Embodiments of the present disclosure will be described in detail below, and examples of the embodiments are shown in the accompanying drawings, in which identical or similar reference signs denote identical or similar elements or elements with identical or similar functions through the accompanying drawings. The following embodiments described with reference to the drawings are illustrative and intended to explain the present disclosure, rather than being interpreted as limitations on the present disclosure.
In description of the present disclosure, it should be understood that orientations or positional relationships indicated by terms “longitudinal”, “transverse”, “length”, “width”, “thickness”, “upper”, “lower”, “front”, “rear”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, “outer”, and the like are based on orientations or positional relationships shown in the drawings, and facilitate the description of the present disclosure and simplify the description merely, rather than indicating or implying that the associated apparatus or element must have specific orientations and are constructed and operated in the specific orientations, and thus should not be construed to limit the present disclosure.
Moreover, the terms “first” and “second” are used only for description and shall not be interpreted as an indication or implication of relative importance or an implicit indication of the number of technical features. Thus, features associated with “first” and “second” may include at least one or more such features, either explicitly or implicitly. In the description of the present disclosure, “a plurality of” means two or more, unless otherwise specifically defined.
In the present disclosure, unless otherwise specifically stated and defined, terms “mounted”, “connect”, “connect to”, “fixed”, and the like should be understood broadly. For example, it may be a fixed connection or detachable connection or integrally formed; it may be a mechanical connection, an electric connection, or a communication; it may be a direct connection, an indirect connection through an intermediary, or a communication between the interiors of two elements or mutual acting relationship between the two elements. For those skilled in the art, the specific meaning of the above-mentioned terms in the embodiments of the present disclosure can be understood according to specific circumstances.
A plastic component 10 according to embodiments of the present disclosure will be described in detail with reference to
Referring to
The first side surface 1 has a buffer recess 11, and the buffer recess 11 is recessed towards a direction where the second side surface 2 is located. As illustrated in
In some embodiments of the present disclosure, one flow guide hole 12 is provided, thereby facilitating simplification of processing process of the plastic component 10. Moreover, a liquid injection process is easy to manage when a number of the flow guide holes 12 is small.
In some embodiments of the present disclosure, a plurality of flow guide holes 12 is provided, thereby facilitating an improvement in liquid injection efficiency.
The second side surface 2 has a connection piece recess 21, and the connection piece recess 21 is recessed towards a direction where the first side surface 1 is located. When the plastic component 10 is applied in the battery, a connection piece may be at least partially installed and positioned in the connection piece recess 21, thereby facilitating a reduction in an overall thickness of the connection piece after the connection piece is connected to the plastic component 10. In addition, a recessed structure of the connection piece recess 21 strengthens a mechanical strength of a connection piece region of the body to some extent.
Referring to
In some embodiments of the present disclosure, referring to
In some embodiments of the present disclosure, referring to
In the plastic component 10 according to the embodiments of the present disclosure, the buffer recess 11 is formed at the first side surface 1 of the body, so that the electrolyte may be buffered, and the bare cell in the battery casing may be prevented from being damaged due to excessive liquid injection pressure. Moreover, a material of the body may be decreased. By defining the connection piece recess 21 at the second side surface 2, it is possible to lower the overall thickness of the connection piece after being connected to the plastic component 10 and further reduce the material of the body. Therefore, the material required for forming the plastic component 10 and the time required for injection molding cooling are saved, and the cost is greatly saved.
In some embodiments of the present disclosure, projection regions of the connection piece recess 21 and the buffer recess 11 on the body are offset from each other. In this way, the thickness of the body is not excessively reduced, which helps keep the body higher in strength.
According to some embodiments of the present disclosure, an offset between the projection region of the connection piece recess 21 on the body and the projection region of the buffer recess 11 on the body is greater than 0.7 mm and smaller than 1 mm. In other words, the offset between the projection region of the connection piece recess 21 on the body and the projection region of the buffer recess 11 on the body is in a range of 0.7 mm to 1 mm. As illustrated in
In some embodiments of the present disclosure, referring to
In some embodiments of the present disclosure, referring to
In some embodiments of the present disclosure, a distance between the outer peripheral recess wall 221 and the outer peripheral surface 3 is smaller than or equal to 10 mm, thus ensuring a high strength of the body, while avoiding a decrease in strength caused by a thin edge of the body. Referring to
According to some embodiments of the present disclosure, referring to
In some embodiments of the present disclosure, the body is of a flat plate-like structure and has a length greater than or equal to 300 mm and a width greater than or equal to 107 mm. In this way, it can be guaranteed that the body is matched with the corresponding battery, preventing any negative impact on normal use of the body due to its size being too small. Moreover, the thickness of the body is greater than or equal to 4 mm, which may ensure that the strength of the body is excessively reduced because the thickness of the body is too thin. In some embodiments, referring to
In some embodiments of the present disclosure, the thickness of the body is smaller than or equal to 30 mm, which may ensure that the body is thin, thus saving materials. The thin body is beneficial to improving injection molding efficiency of the plastic component 10, as well as increasing a success rate of forming the plastic component 10.
In some embodiments of the present disclosure, a length of the buffer recess 11 is greater than or equal to 285 mm, a width of the buffer recess 11 is greater than or equal to 100 mm, and a depth of the buffer recess 11 is greater than or equal to 2.5 mm. In this way, it can be ensured that the buffer recess 11 is matched with the corresponding battery, with a great region and sufficient depth. The buffer recess 11 can well buffer the liquid during liquid injection, avoiding a case where a dimension of the buffer recess 11 is too small and affects a buffer effect on the liquid during injection, such as liquid overflow. In some embodiments, referring to
In some embodiments of the present disclosure, a dimension of the connection piece recess 21 in a length direction of the body is greater than or equal to 50 mm, a dimension of the connection piece recess 21 in a width direction of the body is greater than or equal to 86 mm, and a depth of the connection piece recess 21 is greater than or equal to 2.5 mm. In this way, it can be ensured that the connection piece recess 21 is matched with the corresponding battery, with the great region and sufficient depth, thereby lowering a connection difficulty when the connection piece recess 21 is connected to the connection piece. In some embodiments, referring to
In some embodiments of the present disclosure, referring to
In some embodiments of the present disclosure, the body may further have a liquid return hole penetrating the body in the thickness direction of the body, allowing the electrolyte at a top of the body to flow back through the liquid return hole when the battery is inverted.
According to another aspect of the embodiments of the present disclosure, a battery includes the plastic component 10 according to the above embodiments.
For the battery according to the embodiments of the present disclosure, the plastic component 10 included by the battery resolves technical barriers associated with injection molding difficulties caused by excessive thickness in a large-sized plastic component 10. Moreover, mechanical structures of the plastic component 10 like the buffer recess 11 and the connection piece recess 21 are provided at a plurality of positions of the plastic component 10, thereby allowing feasibility of the large-sized plastic component 10 to be realized. In addition, the thinned design of the buffer recess 11 and the connection piece recess 21 saves the material required for molding the plastic component 10 and cooling time required for injection molding, thus lowering most of the cost. Moreover, the buffer recess 11 is added on the plastic component 10 to serve as an electrolyte buffer region, which addresses a technical challenge of bare cell damage due to excessive hydraulic pressure during rapid infusion in a large-sized battery cell. Moreover, the connection piece recess 21 is added to the plastic component 10 to serve as a connection piece connecting region, which solves the technical problem of a great thickness of the connection piece after the connection piece is connected to the plastic component 10.
In some embodiments of the present disclosure, as illustrated in
In some embodiments of the present disclosure, as illustrated in
In some embodiments of the present disclosure, as illustrated in
In an example, an outer surface of the protrusion 402 may be configured as a semi-cylindrical surface, such that the proximal portion 4021 is a busbar of the semi-cylindrical surface.
In some embodiments, the projection of the flow guide hole 12 on the protrusion 402 is located at the distal portion 4022. In this way, when the electrolyte enters the interior of the battery through the flow guide hole 12, the electrolyte directly drops on the distal portion 4022 instead of the proximal portion 4021, and the distal portion 4022 can guide the electrolyte faster to a side surface space of the bare cell 40.
Alternatively, in other embodiments, the flow guide hole 12 is offset from the protrusion 402, i.e., the flow guide hole 12 directly faces towards the side surface space of the bare cell 40, and the electrolyte may directly enter the side surface space of the bare cell 40 through the flow guide hole 12.
In some embodiments of the present disclosure, provided is a plurality of flow guide holes 12, i.e., the buffer recess 11 internally has a plurality of flow guide holes 12 penetrating the body in a thickness direction of the body, and two sides of the proximal portion have the plurality of flow guide holes 12. The plurality of flow guide holes 12 may disperse the electrolyte, thereby reducing an impact force on the bare cell 40 and improving the liquid injection efficiency of the battery. In addition, a wetting speed of the electrolyte on the bare cell 40 is enhanced, and the idle time is reduced.
In an example, two flow guide holes 12 are provided and disposed on the distal portions 4022 at two sides of the proximal portion 4021, respectively. Alternatively, in another example, the two flow guide holes 12 may be provided and disposed at two sides of the bare cell 40, respectively.
In other embodiments of the present disclosure, one flow guide hole 12 is provided.
In some embodiments of the present disclosure, there is a plurality of bare cells 40, i.e., the battery includes a plurality of bare cells 40, and a flow guide hole 12 is located at a center line between two adjacent bare cells 40. In this way, a space below the flow guide hole 12 is great, and the obstruction to the electrolyte may be decreased.
In descriptions of this specification, descriptions in the reference terms “an embodiment”, “some embodiments”, “example”, “specific example”, “some examples” or the like mean that the specific features, structures, materials or characteristics described in combination with the embodiments or the examples are included in at least one embodiment or example of the present disclosure. In the present specification, the schematic representation of the above terms does not necessarily mean the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable mode. In addition, various embodiments or examples described in the specification, as well as features of various embodiments or examples, may be combined by those skilled in the art.
Although the embodiments of the present disclosure have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and should not be construed as limiting the present disclosure. Those of ordinary skill in the art can make changes, modifications, substitutions and modifications to the above-mentioned embodiments within the scope of the present disclosure.
Number | Date | Country | Kind |
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202211184994.8 | Sep 2022 | CN | national |
The present application is a continuation of International Application No. PCT/CN2022/142431, filed on Dec. 27, 2022, which is based on and claims priority to Chinese Patent Application No. 202211184994.8, filed on Sep. 27, 2022 and entitled with “PLASTIC COMPONENT AND BATTERY HAVING THE SAME”, the entire content of which is incorporated herein by reference.
Number | Date | Country | |
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Parent | PCT/CN2022/142431 | Dec 2022 | US |
Child | 18516961 | US |