Patent Application
20240072352
The information provided in this section is for the purpose of generally presenting the context of the disclosure. Work of the presently named inventors, to the extent it is described in this section, as well as aspects of the description that may not otherwise qualify as prior art at the time of filing, are neither expressly nor impliedly admitted as prior art against the present disclosure.
The present disclosure relates to enclosures for rechargeable energy storage systems.
Electric vehicles (EVs) such as battery electric vehicles (BEVs), hybrid vehicles, and/or fuel cell vehicles include one or more electric machines and a rechargeable energy storage system (RESS). The RESS provides power to and receives power from the one or more electric machines and/or a utility. The RESS includes one or more battery cells, modules and/or packs. A power control system is used to control charging and/or discharging of the RESS during charging and/or driving. The RESS is typically arranged in an enclosure providing both structural protection and hermetic sealing of the RESS.
An enclosure for a rechargeable energy storage system (RESS) includes a hermetic sealing enclosure and a structural housing component configured to support the hermetic sealing enclosure. The hermetic sealing enclosure is arranged on the structural housing component. The hermetic sealing enclosure is configured to house the RESS and provide a hermetic seal.
In other features, the hermetic sealing enclosure includes a base portion and a cover configured to attach to the base portion. The hermetic sealing enclosure includes an opening and a drawstring configured to close the opening. The hermetic sealing enclosure includes an opening and a zipper configured to close the opening.
In other features, the structural housing component includes a bottom surface and side walls extending from the bottom surface and the hermetic sealing enclosure is arranged on the bottom surface between the side walls. At least one of the side walls and the bottom surface include holes to reduce a weight of the structural housing component.
In other features, the hermetic sealing enclosure includes gas vents that are configured to release pressure from the hermetic sealing enclosure when pressure within the hermetic sealing enclosure is greater than a predetermined pressure. The gas vents are selected from a group consisting of a pressure sensitive plug and a polymer layer arranged in a hole in the hermetic sealing enclosure.
In other features, the hermetic sealing enclosure is made of a material selected from a group consisting of fabric, metal, composite material, rubber, polymer and/or combinations thereof. The hermetic sealing enclosure is made of a flexible material that is rolled to close an opening of the hermetic sealing enclosure. The structural housing component includes a bottom surface, a frame and tubes extending between the bottom surface and the frame.
In other features, a coating that is at least one of fire resistant and electrically insulating is arranged on at least one of an inner surface and an outer surface of the hermetic sealing enclosure.
An enclosure for a rechargeable energy storage system (RESS) includes a hermetic sealing enclosure and a structural housing component including side walls extending from a bottom surface. The hermetic sealing enclosure is arranged on the bottom surface between the side walls. The hermetic sealing enclosure includes gas vents that are configured to release pressure from the hermetic sealing enclosure when pressure within the hermetic sealing enclosure is greater than a predetermined pressure. The hermetic sealing enclosure is made of a material selected from a group consisting of fabric, metal, composite material, rubber, polymer and/or combinations thereof.
In other features, the hermetic sealing enclosure includes a base portion and a cover configured to attach to the base portion. The hermetic sealing enclosure includes an opening and a drawstring configured to close the opening. The hermetic sealing enclosure includes an opening and a zipper configured to close the opening.
In other features, at least one of the side walls and the bottom surface include holes to reduce a weight of the structural housing component. The hermetic sealing enclosure is made of a flexible material that is rolled to close an opening of the hermetic sealing enclosure. The structural housing component includes a bottom surface, a frame and tubes extending between the bottom surface and the frame. A coating that is at least one of fire resistance and electrically insulating is arranged on at least one of an outer surface and an inner surface of the hermetic sealing enclosure.
Further areas of applicability of the present disclosure will become apparent from the detailed description, the claims, and the drawings. The detailed description and specific examples are intended for purposes of illustration only and are not intended to limit the scope of the disclosure.
The present disclosure will become more fully understood from the detailed description and the accompanying drawings, wherein:
In the drawings, reference numbers may be reused to identify similar and/or identical elements.
While the foregoing description relates to enclosures for rechargeable energy storage systems (RESS) for vehicles, the RESS enclosure can be used in other non-vehicle applications.
Rechargeable energy storage systems (RESS) are arranged in an enclosure. There are both load-bearing and hermetic sealing requirements for the enclosure of the RESS. Integration of both functions in the enclosure presents design and manufacturing challenges.
The enclosure for a RESS according to the present disclosure decouples the hermetic sealing function from the load-bearing function. The enclosure for a RESS according to the present disclosure includes a hermetic sealing enclosure that does not need to meet some or all of the structural functionality requirements. The RESS enclosure further includes a structural housing component that is designed to meet load requirements for non-structural implementations or to provide protection to the RESS during a crash event in structural implementations (without hermetic sealing requirements).
The decoupled design of the RESS enclosure relaxes design constraints and reduces manufacturing complexity for both the hermetic sealing enclosure and the structural housing component.
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In some examples, the opening 120 is rolled to close the opening 120 and create a hermetic seal. In some examples, a drawstring 124 is used to secure the closed state of the rolled opening 120. The drawstring 124 may also secure the hermetic sealing enclosure 112 to the structural housing component 50 (e.g., using the holes 70 and/or 74). In other examples, a hook and loop fastener or other type of fastener is used to close the opening and/or to secure the hermetic sealing enclosure 112 to the structural housing component 50.
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As can be appreciated, the RESS enclosure according to the present disclosure decouples the hermetic sealing function from the structural and protection functions provided by the structural housing component. The decoupling of functions increases design freedom.
In some examples, the hermetic sealing enclosure is made of a flexible material with little or no structural integrity. In some examples, the hermetic sealing enclosure is made of a material selected from a group consisting of fabric, metal, composite material, rubber, polymer and/or combinations thereof. In some examples, the hermetic sealing enclosure is made using a thin, flexible, durable, and waterproof material selected from a group consisting of polymer, rubber, fabric, and combinations thereof.
In some examples, the hermetic sealing enclosure is made of stamped sheet metal forming the base portion and cover. In some examples, mating edges of the base portion are joined by welding or adhesive sealers as needed. The cover is arranged over the base portion to form the hermetic enclosure. In some examples, the base portion and/or the cover of the hermetic sealing enclosure are molded or 3D printed using polymer, composite materials and/or other materials that provide the hermetic sealing function.
In some examples, edges of the hermetic sealing enclosure are tied using rope or closed/opened using zippers to allow easy access during maintenance. In some examples, an outer surface of the hermetic sealing enclosure is coated with a fire-resistant coating for fire control. In some examples, the structural housing component that houses the hermetic enclosure and the RESS are manufactured with zero radius and right angles to optimize housing capacity.
The foregoing description is merely illustrative in nature and is in no way intended to limit the disclosure, its application, or uses. The broad teachings of the disclosure can be implemented in a variety of forms. Therefore, while this disclosure includes particular examples, the true scope of the disclosure should not be so limited since other modifications will become apparent upon a study of the drawings, the specification, and the following claims. It should be understood that one or more steps within a method may be executed in different order (or concurrently) without altering the principles of the present disclosure. Further, although each of the embodiments is described above as having certain features, any one or more of those features described with respect to any embodiment of the disclosure can be implemented in and/or combined with features of any of the other embodiments, even if that combination is not explicitly described. In other words, the described embodiments are not mutually exclusive, and permutations of one or more embodiments with one another remain within the scope of this disclosure.
Spatial and functional relationships between elements (for example, between modules, circuit elements, semiconductor layers, etc.) are described using various terms, including “connected,” “engaged,” “coupled,” “adjacent,” “next to,” “on top of,” “above,” “below,” and “disposed.” Unless explicitly described as being “direct,” when a relationship between first and second elements is described in the above disclosure, that relationship can be a direct relationship where no other intervening elements are present between the first and second elements, but can also be an indirect relationship where one or more intervening elements are present (either spatially or functionally) between the first and second elements. As used herein, the phrase at least one of A, B, and C should be construed to mean a logical (A OR B OR C), using a non-exclusive logical OR, and should not be construed to mean “at least one of A, at least one of B, and at least one of C.”
In the figures, the direction of an arrow, as indicated by the arrowhead, generally demonstrates the flow of information (such as data or instructions) that is of interest to the illustration. For example, when element A and element B exchange a variety of information but information transmitted from element A to element B is relevant to the illustration, the arrow may point from element A to element B. This unidirectional arrow does not imply that no other information is transmitted from element B to element A. Further, for information sent from element A to element B, element B may send requests for, or receipt acknowledgements of, the information to element A.
