Non-aqueous electrolyte battery and method for producing the same
View Patent ↗A non-aqueous electrolyte battery includes a battery element, a film-form casing member, and a resin protective layer. The battery element includes a positive electrode, a negative electrode, and a separator disposed between the positive electrode and the negative electrode. The film-form casing member contains the battery element and an electrolyte in an enclosed space thereof. The resin protective layer is formed along the surface of the film-form casing member and has a substantially uniform thickness.
1. A non-aqueous electrolyte battery comprising:
a battery element including a positive electrode, a negative electrode, and a separator disposed between the positive electrode and the negative electrode;
a film-form casing member for containing the battery element and an electrolyte in an enclosed space, the film-form casing member having a first surface facing the battery element and a second surface opposite the first surface; and
a single protective layer comprising a resin material formed on the second surface of the film-form casing member,
wherein the protective layer is formed around the film-form casing member.
2. The non-aqueous electrolyte battery according to claim 1 , wherein a fiber material is contained within the single protective layer.
3. The non-aqueous electrolyte battery according to claim 2 , wherein the fiber material is provided so that the fiber material is wound around the film-form casing member containing the battery element therein.
4. The non-aqueous electrolyte battery according to claim 3 , wherein the fiber material is a continuous fiber.
5. The non-aqueous electrolyte battery according to claim 4 , wherein the fiber material is a woven fabric formed by weaving the continuous fiber.
6. The non-aqueous electrolyte battery according to claim 3 , wherein the fiber material is a non-woven fabric formed from a short fiber.
7. The non-aqueous electrolyte battery according to claim 2 , wherein the fiber material is at least one member selected from the group consisting of a glass fiber, a carbon fiber, and an aramid fiber.
8. The non-aqueous electrolyte battery according to claim 1 , wherein the resin material is a photosetting resin or a thermosetting resin.
9. The non-aqueous electrolyte battery according to claim 1 , wherein the battery element has a stacked electrode structure in which a plurality of the negative and positive electrodes are stacked alternately and isolated by separators.
10. A non-aqueous electrolyte battery comprising:
a battery element including a positive electrode, a negative electrode, and a separator, the positive and negative electrodes being stacked and isolated by the separator;
a film-form casing member for containing the battery element and an electrolyte in an enclosed space, the film-form casing member having a first surface facing the battery element and a second surface opposite the first surface; and
a single protective layer comprising a resin material formed on the second surface of the film-form casing member,
wherein the protective layer has an opening through which a part of a sealing portion of the film-form casing member is exposed, and
wherein the protective layer is formed around the film-form casing member.
11. The non-aqueous electrolyte battery according to claim 10 , wherein the sealing portion of the film-form casing member exposed through the opening has a pressure resistance lower than that of another sealing portion.
12. The non-aqueous electrolyte battery according to claim 11 , wherein the opening is formed in a portion facing at least one of a first lead portion through which a positive electrode terminal electrically connected to the positive electrode is electrically extended from the sealing portion of the film-form casing member and a second lead portion through which a negative electrode terminal electrically connected to the negative electrode is electrically extended from the sealing portion of the film-form casing member.
13. The non-aqueous electrolyte battery according to claim 11 , further comprising:
a first resin film formed between the film-form casing member and the positive electrode terminal; and
a second resin film formed between the film-form casing member and the negative electrode terminal,
wherein the first resin film and the second resin film are formed so that a first contact area between the positive electrode terminal and the first resin film and a second contact area between the negative electrode terminal and the second resin film are different from each other.
14. The non-aqueous electrolyte battery according to claim 10 , wherein a fiber material is contained within the single protective layer.