Panasonic had 612 patents in batteries during Q3 2023. One patent is for a laminating device that includes multiple laminating heads arranged on a rotating drum section, which can swing and advance to a laminating position. Another patent is for a battery case with gas discharge holes and gas exhaust passages to safely release gas generated by the batteries. There is also a patent for a battery case with ribs and gas guide passages to guide gas from the inner case to the outer case. Additionally, there is a patent for an electrode group with a positive electrode and negative electrode, where the mass of the negative electrode active material layer varies in different regions. Lastly, there is a patent for a negative electrode active material for a secondary battery, which includes a cage structure with cerium and silicon atoms. GlobalData’s report on Panasonic gives a 360-degreee view of the company including its patenting strategy. Buy the report here.
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Panasonic grant share with batteries as a theme is 32% in Q3 2023. Grant share is based on the ratio of number of grants to total number of patents.
Recent Patents
Application: Laminating device (Patent ID: US20230271410A1)
The patent filed by Panasonic Holdings Corp. describes a laminating device that is used to laminate multiple unit laminated bodies onto a lamination stage. The device includes a drum section that holds a plurality of laminating heads, each of which holds a unit laminated body. The laminating heads are swingably held by a support shaft and can be advanced to a laminating position facing the lamination stage by rotating the drum section. A cam section is in contact with each laminating head and causes it to swing around the support shaft as the drum section rotates. A biasing member is also included to bias each laminating head in the radial direction of the drum section.
Claim 1 of the patent describes the laminating device in detail, including the arrangement of the laminating heads in the drum section, the swingable movement of the laminating heads, and the biasing member that biases the laminating heads in the radial direction of the drum section.
Claim 2 specifies that the cam section does not follow the rotation of the drum section and includes a cam groove that extends in the circumferential direction of the drum section. Each laminating head has a projecting section that is engaged with the cam groove, causing the laminating head to swing around the support shaft as the projecting section moves along the cam groove. The biasing member presses the projecting section against a side surface of the cam groove.
Claim 3 introduces a first attraction section provided in each laminating head and a second attraction section provided in the drum section. When each laminating head is at the laminating position, the first attraction section of the laminating head and the second attraction section in the drum section attract each other.
Claim 4 adds a first repulsion section in each laminating head and a second repulsion section in the drum section. When each laminating head is at the laminating position, the first repulsion section of the laminating head and the second repulsion section in the drum section repel each other.
Claim 5 includes a third attraction section in each laminating head and a fourth attraction section in the lamination stage. The third attraction section of the laminating head at the laminating position and the fourth attraction section in the lamination stage attract each other.
Claim 6 specifies that the third attraction section can be a magnet, an electromagnet, or a ferromagnetic body, while the fourth attraction section is an electromagnet. The magnetic force of the fourth attraction section is lowered as each laminating head leaves the laminating position.
In summary, the patent describes a laminating device with multiple laminating heads that can be swung and advanced to a laminating position. The device includes a cam section, a biasing member, and attraction and repulsion sections to facilitate the laminating process.
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GlobalData, the leading provider of industry intelligence, provided the underlying data, research, and analysis used to produce this article.
GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
