Deformation resistant battery, group-battery, multiple group-battery and automobile therewith
View Patent ↗A battery of the present invention is provided with positive and negative terminals led out of the battery and one or more sealing members filled between the positive and negative terminals and the battery. Each of the sealing members is provided with one or more resin layers, each of which is provided with one or more non-molecular-oriented resin layers.
1. A battery comprising:
a power generation element including a cathode electrode plate, an anodic electrode plate, a separator and an electrolyte, wherein the cathode electrode plate, the anodic electrode plate and the separator are stacked to form an electrode stack;
a casing housing the power generation element and including a metal layer and a sealing portion, said casing comprising an upper casing layer and lower casing layer, wherein said sealing portion is an area where said upper casing layer is adhered to said lower casing layer;
a terminal configured to transmit an electric power, the terminal being connected to the power generation element and led out of the casing through the sealing portion;
a film between the terminal and the casing, the film including a resin film covering and adhering to the whole of an inner surface of the sealing portion and a sealing film wrapped around the terminal and adhering to both the terminal and the resin film, wherein the sealing film is flush with the casing at an end of the casing where the terminal exits the battery, the sealing film extends from the end of the casing to an end of the sealing portion facing the stacked electrodes, and the sealing film is flush with the end of the sealing portion facing the electrode stack.
2. The battery of claim 1 , wherein the resin film includes a layer consisting essentially of a non-molecular-oriented resin not subjected to a treatment of drawing that orients a molecular structure of the layer in a direction of the drawing.
3. The battery of claim 1 , wherein the casing includes a second resin film consisting essentially of a molecular-oriented resin subjected to a treatment of drawing that orients a molecular structure of the layer in a direction of the drawing.
4. The battery of claim 1 , wherein the resin films are made of a resin selected from the group consisting of polypropylene, modified polypropylene, polyethylene, modified polyethylene and ionomer.
5. The battery of claim 1 , wherein the terminal is made of a metal selected from the group consisting of aluminum, steel, nickel and copper.
6. The battery of claim 1 , wherein:
thickness of the battery is in a range of 1 to 10 mm.
7. The battery of claim 1 , further comprising cathodic active material selected from the group consisting of lithium double oxides.
8. The battery of claim 1 , further comprising cathodic active material selected from the group consisting of lithium-manganese double oxides.
9. The battery of claim 1 , further comprising anodic active material selected from the group consisting of carbonaceous materials.
10. The battery of claim 1 , further comprising anodic active material of amorphous carbon.
11. A group-battery comprising:
a plurality of batteries arranged in parallel and in one direction, each of the batteries comprising:
a power generation element including a cathode electrode plate, an anodic electrode plate, a separator and an electrolyte, wherein the cathode electrode plate, the anodic electrode plate and the separator are stacked to form an electrode stack;
a casing housing the power generation element, the casing including a metal layer and a sealing portion, said casing comprising an upper casing layer and lower casing layer, wherein said sealing portion is an area where said upper casing layer is adhered to said lower casing layer;
a terminal configured to transmit an electric power, the terminal being connected to the power generation element and led out of the casing through the sealing portion;
a film between the terminal and the casing, the film including a resin film covering and adhering to the whole of an inner surface of the sealing portion and a sealing film wrapped around the terminal and adhering to both the terminal and the resin film, wherein the sealing film is flush with the casing at an end of the casing where the terminal exits each battery, the sealing film extends from the end of the casing to an end of the sealing portion facing the stacked electrodes, and the sealing film is flush with the end of the sealing portion facing the electrode stack; and
a conductive member configured to electrically connect the terminals in parallel, wherein the batteries are electrically connected in parallel and fixed.
12. The group-battery of claim 11 , wherein the batteries are accumulated on top of one another.
13. The battery of claim 11 , wherein the resin film includes a layer consisting essentially of a non-molecular-oriented resin not subjected to a treatment of drawing that orients a molecular structure of the layer in a direction of the drawing.
14. The battery of claim 11 , wherein the casing includes a second resin film consisting essentially of a molecular-oriented resin subjected to a treatment of drawing that orients a molecular structure of the layer in a direction of the drawing.
15. A multiple group-battery comprising:
a plurality of group-batteries arranged in parallel and in one direction, each of the group-batteries comprising:
a plurality of batteries arranged in parallel and in one direction, each of the batteries comprising:
a power generation element including a cathode electrode plate, an anodic electrode plate, a separator and an electrolyte, wherein the cathode electrode plate, the anodic electrode plate and the separator are stacked to form an electrode stack;
a casing housing the power generation element, the casing including a metal layer and a sealing portion, said casing comprising an upper casing layer and lower casing layer, wherein said sealing portion is an area where said upper casing layer is adhered to said lower casing layer;
a terminal configured to transmit an electric power, the terminal being connected to the power generation element and led out of the casing through the sealing portion;
a film between the terminal and the casing, the film including a resin film covering and adhering to the whole of an inner surface of the sealing portion and a sealing film wrapped around the terminal and adhering to both the terminal and the resin film, wherein the sealing film is flush with the casing at an end of the casing where the terminal exits each battery, the sealing film extends from the end of the casing to an end of the sealing portion facing the stacked electrodes, and the sealing film is flush with the end of the sealing portion facing the electrode stack;
a conductive member configured to electrically connect the terminals in parallel, wherein the batteries are electrically connected in parallel and fixed; and
an outer terminal configured to electrically connect the conductive members, wherein the group-batteries are electrically connected in parallel or in series and fixed.
16. The multiple group-battery of claim 15 , wherein the group-batteries are electrically connected in parallel.