{
  "$type": "site.standard.document",
  "description": "Uneven distribution of current is suppressed even in a condition that semiconductor elements are mounted in a limited area on a circuit board. A power supply device includes a secondary battery cell, charging/discharging FETs (21-28), and a circuit board (30) including a first terminal block (31)…",
  "path": "/patents/1395345",
  "publishedAt": "2025-08-27T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M10/425",
    "PANASONIC ENERGY CO LTD [JP]"
  ],
  "textContent": "Uneven distribution of current is suppressed even in a condition that semiconductor elements are mounted in a limited area on a circuit board. A power supply device includes a secondary battery cell, charging/discharging FETs (21-28), and a circuit board (30) including a first terminal block (31) and a second terminal block (32). A first charging/discharging FET (21) and a third charging/discharging FET (23) are disposed at a side of the first terminal block on circuit board (30). A second charging/discharging FET (22) and a fourth charging/discharging FET (24) are disposed at a side of the second terminal block on circuit board (30). A first current path (41) connecting the first charging/discharging FET (21) in series to the second charging/discharging FET (22) is longer than a second current path (42) connecting the third charging/discharging FET (23) in series to the fourth charging/discharging FET (24). The first current path (41) includes a first current impeding region (51) configured to impede current flow. The second current path (42) includes a second current impeding region (52) configured to impede current flow. A second electrical resistance (52R) of the second current impeding region (52) is higher than a first electrical resistance (51R) of the first current impeding region (51).",
  "title": "POWER SUPPLY DEVICE"
}