US-12620656-B2 - Liquid resistant battery pack

Abstract

Aspects of the present disclosure involve various battery packs. In general, the battery pack includes a plurality of layers and an enclosure enclosing the plurality of layers. A cathode terminal and an anode terminal extend from a first face of the enclosure. The cathode terminal and the anode terminal are connected to the plurality of layers. A Parylene coating may cover an entire surface of the enclosure except for at least a portion of a surface of the first face.

Inventors

• Pengchuan Wang
• Arun D. Chawan
• Dominic Pitera
• Karl A. Gazdowski
• Kyle Tse
• Nath B. Chhiv
• Nathan J. Bohney
• Shreshtha U. Kumar
• Surojit Ganguli

Assignees

• APPLE INC.

Dates

Publication Date

20260505

Application Date

20220614

Claims (10)

1. 1 . A battery pack comprising: a plurality of layers; an enclosure enclosing the plurality of layers; a cathode terminal and an anode terminal extending from a first face of the enclosure, wherein the cathode terminal and the anode terminal are connected to the plurality of layers; a connector comprising a portion external to the enclosure, wherein the connector is configured to connect the cathode terminal or the anode terminal to the plurality of layers, and wherein the external portion of the connector is connected to the first face of the enclosure at a first position and is connected to a second face of the enclosure at a second position; and a Parylene coating covering an entire surface of the enclosure except for at least a portion of a surface of the first face.
2. 2 . The battery pack of claim 1 , further comprising: a liquid resistant tape coating covering the portion of the surface of the first face.
3. 3 . The battery pack of claim 1 , wherein the portion of the surface of the first face of the enclosure comprises a region of the surface of the first face from which the cathode terminal and the anode terminal extend.
4. 4 . The battery pack of claim 1 , wherein the Parylene coating further covers a surface of the external portion of the connector.
5. 5 . The battery pack of claim 1 , further comprising: a first liquid resistant tape coating covering the first position; and a second liquid resistant tape coating covering the second position.
6. 6 . The battery back of claim 1 , further comprising: a liquid resistant tape coating covering at least a portion of a surface of the second face of the enclosure.
7. 7 . A portable electronic device, comprising: a set of components powered by a battery pack; and a device enclosure configured to receive the battery pack, the battery pack comprising: a plurality of layers; an enclosure enclosing the plurality of layers; a cathode terminal and an anode terminal extending from a first face of the enclosure, wherein the cathode terminal and the anode terminal are connected to the plurality of layers; a connector comprising a portion external to the enclosure, wherein the connector is configured to connect the cathode terminal or the anode terminal to the plurality of layers, and wherein the external portion of the connector is connected to the first face of the enclosure at a first position and is connected to a second face of the enclosure at a second position; and a Parylene coating covering an entire surface of the enclosure except for at least a portion of a surface of the first face.
8. 8 . The portable electronic device of claim 7 , wherein the battery pack further comprises a liquid resistant tape coating covering the portion of the surface of the first face.
9. 9 . The portable electronic device of claim 7 , wherein the portion of the surface of the first face of the enclosure comprises a region of the surface of the first face from which the cathode terminal and the anode terminal extend.
10. 10 . The portable electronic device of claim 7 , the battery pack further comprising: a first liquid resistant tape coating covering the first position; and a second liquid resistant tape coating covering the second position.

Description

PRIORITY The disclosure claims the benefit under 35 U.S.C. § 119(e) of U.S. Provisional Patent Application No. 63/248,251 entitled “Liquid Resistant Battery Pack”, filed on Sep. 24, 2021, and U.S. Provisional Patent Application No. 63/248,258 entitled “Liquid Resistant Battery Pack”, filed on Sep. 24, 2021, both of which are incorporated herein by reference in their entirety. TECHNICAL FIELD This disclosure relates generally to battery systems, and more specifically to battery packs. BACKGROUND A battery may malfunction if moisture or liquid infiltrates the battery. However, preventing moisture or liquid from infiltrating the battery is a continual challenge. Many existing batteries lack sufficient protection from such infiltration. It is with these and other issues in mind that various aspects of the present disclosure were developed. SUMMARY In one aspect, the disclosure is directed to a battery pack that provides increased liquid resistance for higher battery performance. In general, the battery pack may include a plurality of layers, and an enclosure enclosing the plurality of layers. A cathode terminal and an anode terminal may extend from a first face of the enclosure. The cathode terminal and the anode terminal may be connected to the plurality of layers. The battery pack may include a Parylene coating covering an entire surface of the enclosure except for at least a portion of a surface of the first face. In a further aspect, the disclosure is directed to a method for manufacturing a battery pack that provides increased liquid resistance for higher battery performance. A plurality of layers may be inserted into an enclosure. A cathode terminal extending from a first face of the enclosure may be connected to the plurality of layers. An anode terminal extending from the first face of the enclosure may be connected to the plurality of layers. A Parylene coating may be applied to an entire surface of the enclosure except for at least a portion of a surface of the first face. In a further aspect, the disclosure is directed to a portable electronic device including a set of components powered by a battery pack that provides increased liquid resistance for higher battery performance. The portable electronic device may include a device enclosure configured to receive the battery pack. The battery pack may include a plurality of layers and an enclosure enclosing the plurality of layers. The battery pack may include a cathode terminal and an anode terminal extending from a first face of the enclosure. The cathode terminal and the anode terminal may be connected to the plurality of layers. The battery pack may include a Parylene coating covering an entire surface of the enclosure except for at least a portion of a surface of the first face. In a further aspect, the disclosure is directed to a battery pack that provides increased liquid resistance for higher battery performance. In general, the battery pack includes a plurality of layers, and an enclosure enclosing the plurality of layers. A cathode terminal and an anode terminal may extend from a first face of the enclosure. The cathode terminal and the anode terminal may be connected to the plurality of layers. A connector comprising a portion external to the enclosure may be configured to connect the cathode terminal or the anode terminal to the plurality of layers. The battery pack may include a coating covering an entire surface of the enclosure except for at least a portion of a surface of the first face. In a further aspect, the disclosure is directed to a method for manufacturing a battery pack that provides increased liquid resistance for higher battery performance. A plurality of layers may be inserted into an enclosure. A cathode terminal extending from a first face of the enclosure may be connected to the plurality of layers. One end of a connector may be connected to an anode terminal extending from the first face of the enclosure. Another end of the connector may be connected to the plurality of layers. The connector may comprise a portion external to the enclosure. A coating may be applied to an entire surface of the enclosure except for at least a portion of a surface of the first face. In a further aspect, the disclosure is directed to a portable electronic device including a set of components powered by a battery pack that provides increased liquid resistance for higher battery performance. The portable electronic device may include a device enclosure configured to receive the battery pack. The battery pack may include a plurality of layers and an enclosure enclosing the plurality of layers. The battery pack may include a cathode terminal and an anode terminal extending from a first face of the enclosure. The cathode terminal and the anode terminal may be connected to the plurality of layers. A connector comprising a portion external to the enclosure may be configured to connect the cathode terminal or the anode terminal to the plurality of la