Vehicle and method of controlling vehicle

Patent metadata

Field	Value
Publication number	US-12522103-B2
Application number	US-202418425230-A
Country	US
Kind code	B2
Filing date	Jan 29, 2024
Priority date	Mar 27, 2023
Publication date	Jan 13, 2026
Grant date	Jan 13, 2026

Abstract

The electrified vehicle includes an all-solid-state battery in which a positive electrode layer, a solid electrolyte layer, and a negative electrode layer are stacked in the front-rear direction (predetermined direction) of the electrified vehicle. The electrified vehicle also includes an acceleration sensor that detects a first acceleration in a direction perpendicular to the longitudinal direction and a second acceleration in the longitudinal direction. In an electrified vehicle, charging and discharging of the all-solid-state battery is prohibited when the first acceleration exceeds the first reference value, and the all-solid-state battery is prohibited until the second acceleration exceeds a second reference value that is larger than the first reference value, charging/discharging is allowed.

First claim

What is claimed is:

1 . A vehicle comprising:
an all-solid-state battery in which a positive electrode layer, a solid electrolyte layer, and a negative electrode layer are stacked in a predetermined direction, the all-solid-state battery having a higher mechanical strength in the predetermined direction than in a direction intersecting the predetermined direction; an acceleration sensor configured to detect a first acceleration in the direction intersecting the predetermined direction and a second acceleration in the predetermined direction; and a processor configured to prohibit charging and discharging of the all-solid-state battery in a case where i) the first acceleration exceeds a first reference value, and in a case where ii) the second acceleration exceeds a second reference value that is larger than the first reference value.

2 . The vehicle according to claim 1 , wherein the predetermined direction is a direction along a front-rear direction of the vehicle.

3 . The vehicle according to claim 1 , wherein the predetermined direction is a direction along a direction of gravity.

4 . The vehicle according to claim 1 , wherein the acceleration sensor is a three-axis acceleration sensor that detects accelerations in three axes that are orthogonal to each other.

5 . The vehicle according to claim 1 , wherein
the predetermined direction is inclined at a predetermined angle with respect to a front-rear direction of the vehicle, and the acceleration sensor is configured to calculate an acceleration component in the predetermined direction based on detected accelerations in the front-rear direction and a direction of gravity.

6 . The vehicle according to claim 1 , wherein
the processor is further configured to
determine whether the first acceleration exceeds the first reference value,
determine whether the second acceleration exceeds the second reference value, in response to a first determination that the first acceleration does not exceed the first reference value, and
allow the charging and discharging of the all-solid-state battery in response to a second determination that the second acceleration does not exceed the second reference value, and
the charging and discharging of the all-solid-state battery is prohibited in response to a third determination that the first acceleration exceeds the first reference value and a fourth determination that the second acceleration exceeds the second reference value.

7 . The vehicle according to claim 1 , wherein
the processor is further configured to
determine whether the second acceleration exceeds the second reference value,
determine whether the first acceleration exceeds the first reference value, in response to a first determination that the second acceleration does not exceed the second reference value, and
allow the charging and discharging of the all-solid-state battery in response to a second determination that the first acceleration does not exceed the first reference value, and
the charging and discharging of the all-solid-state battery is prohibited in response to a third determination that the first acceleration exceeds the first reference value and a fourth determination that the second acceleration exceeds the second reference value.

8 . The vehicle according to claim 1 , wherein
the first reference value is a threshold value of acceleration at which damage occurs in the all-solid-state battery in the direction intersecting the predetermined direction, and the second reference value is a threshold value of acceleration at which damage occurs in the all-solid-state battery in the predetermined direction.

9 . A method of controlling a vehicle including an all-solid-state battery, the method comprising:
determining whether a first acceleration in a direction intersecting a predetermined direction in which a positive electrode layer, a solid electrolyte layer, and a negative electrode layer of the all-solid-state battery are stacked exceeds a first reference value, the all-solid-state battery having a higher mechanical strength in the predetermined direction than in a direction intersecting the predetermined direction; determining whether a second acceleration in the predetermined direction exceeds a second reference value; and prohibiting charging and discharging of the all-solid-state battery in a case where i) the first acceleration in the direction intersecting the predetermined direction exceeds the first reference value, and in a case where ii) the second acceleration exceeds the second reference value.

10 . The method according to claim 9 , further comprising:
determining whether the first acceleration exceeds the first reference value; determining whether the second acceleration exceeds the second reference value, in response to a first determination that the first acceleration does not exceed the first reference value; and allowing the charging and discharging of the all-solid-state battery in response to a second determination that the second acceleration does not exceed the second reference value, wherein the charging and discharging of the all-solid-state battery is prohibited in response to a third determination that the first acceleration exceeds the first reference value and a fourth determination that the second acceleration exceeds the second reference value.

11 . The method according to claim 9 , further comprising:
determining whether the second acceleration exceeds the second reference value; determining whether the first acceleration exceeds the first reference value, in response to a first determination that the second acceleration does not exceed the second reference value; and allowing the charging and discharging of the all-solid-state battery in response to a second determination that the first acceleration does not exceed the first reference value, wherein the charging and discharging of the all-solid-state battery is prohibited in response to a third determination that the first acceleration exceeds the first reference value and a fourth determination that the second acceleration exceeds the second reference value.

Assignees

• Toyota Motor Co Ltd

Inventors

• Otaki Mitsutoshi
• Nakanishi Shinji
• Waseda Tetsuya
• Yoshida Jun
• Migita Tsubasa
• Uchida Yoshihiro

Classifications

• B60L50/60

  using power supplied by batteries (in combination with fuel cells B60L50/75) · CPC title

• B60L2240/16

  longitudinal · CPC title

• H01M2220/20

  Batteries in motive systems, e.g. vehicle, ship, plane · CPC title

• B60L2240/18

  lateral · CPC title

• H01M10/44 Primary

  Methods for charging or discharging (circuits for charging H02J7/00) · CPC title