Energy storage pack authentication method, energy storage pack, charging device, electric mobile object, and control device for electric mobile object

Patent metadata

Field	Value
Publication number	US-2023062322-A1
Application number	US-202017793599-A
Country	US
Kind code	A1
Filing date	Dec 28, 2020
Priority date	Jan 23, 2020
Publication date	Mar 2, 2023
Grant date	—

Abstract

An electric movable body transmits a signal including identification information identical to identification information retained in a first power storage pack via near-field communication when the first power storage pack is detached from the electric movable body. A charging device wiredly transmits the identification information received from the electric movable body to a second power storage pack. The second power storage pack transmits via near-field communication a signal including the identification information received from the charging device. The electric movable body collates whether or not the identification information included in the received signal matches the identification information retained in the first power storage pack.

First claim

1 . A power storage pack authentication method comprising:
transmitting, by a controller of an electric movable body, a signal including identification information identical to identification information retained in a first power storage pack via near-field communication when the first power storage pack is detached from the electric movable body; after a controller of a charging device receives the signal transmitted via the near-field communication and after the first power storage pack detached from the electric movable body is mounted in a first charging slot of the charging device; wiredly transmitting, by the controller of the charging device, the identification information received from the electric movable body to a controller of a second power storage pack which is replaceable with the first power storage pack and which is mounted in a second charging slot; transmitting via near-field communication, by the controller of the second power storage pack, a signal including the identification information received from the charging device after the second power storage pack detached from the second charging slot is mounted in the electric movable body; and collating, by the controller of the electric movable body, whether or not the identification information included in the received signal matches the identification information retained in the first power storage pack after the controller of the electric movable body receives the signal transmitted via the near-field communication, and authenticating that the second power storage pack mounted in the electric movable body is identical to a partner device communicating via the near-field communication when the identification information included in the received signal matches the identification information retained in the first power storage pack.

2 . The power storage pack authentication method according to claim 1 , further comprising:
wiredly transmitting, by the controller of the electric movable body, the identification information retained in the first power storage pack to the controller of the second power storage pack mounted in the electric movable body before the controller of the second power storage pack transmits the signal including the identification information received from the charging device after the second power storage pack detached from the second charging slot is mounted in the electric movable body; and collating, by the controller of the second power storage pack, the identification information received from the charging device with identification information received from the electric movable body, and wiredly transmitting a result of said collating to the controller of the electric movable body, wherein the controller of the second power storage pack suspends the transmitting via the near-field communication of the signal including the identification information received from the charging device when the result of said collation result is that the identification information received from the charging device does not match the identification information received from the electric movable body.

3 . The power storage pack authentication method according to claim 1 , further comprising:
after the controller of the charging device receives the identification information from the controller of the electric movable body and the first power storage pack detached from the electric movable body is mounted in the first charging slot of the charging device, wiredly transmitting another identification information to the controller of the first power storage pack; transmitting via the near-field communication, by the controller of the first power storage pack, the signal including the identification information received from the charging device; and after the controller of the charging device receives the signal transmitted via the near-field communication, collating, by the controller of the charging device, whether or not the identification information included in the received signal matches another identification information wiredly transmitted; and authenticating that the first power storage pack mounted in the first charging slot is identical to a partner device communicating via the near-field communication when the identification information included in the received signal matches the another identification information wiredly transmitted.

4 . The power storage pack authentication method according to claim 1 , wherein the near-field communication is Bluetooth® Low Energy (BLE).

5 . A power storage pack comprising:
a power storage unit configured to supply electric power to an electric movable body; and a controller configured to communicate with a controller of the electric movable body and a controller of a charging device, wherein the controller of the power storage unit is configured to:
after the power storage pack is detached from the electric movable body and is mounted in a charging slot of the charging device, wiredly receive identification information from the controller of the electric movable body received from the controller of the electric movable body after charging of the power storage pack is completed; and
transmit via by near-field communication a signal including the identification information received from the charging device after the power storage pack is detached from the charging slot and is mounted in the electric movable body, and
the signal transmitted via the near-field communication is utilized by the controller of the electric movable body for the controller of the electric movable body to authenticate whether or not the power storage pack mounted in the electric movable body is identical to a partner device communicating via the near-field communication in the controller of the electric movable body.

6 . The power storage pack according to claim 5 , wherein the controller of the power storage unit is configured to:
wiredly receive the identification information from the controller of the electric movable body before receiving the signal including the identification information from the charging device transmitted via the near-field communication after the power storage pack is mounted in the electric movable body; collate the identification information received from the charging device with the identification information received from the electric movable body, and wiredly transmit a result of said collating to the electric movable body; and suspend the transmitting, the near-field communication, of the signal including the identification information received from the charging device when the result of said collating is that the identification information received from the charging device does not match the identification information received from the electric movable body.

7 . A charging device comprising:
a plurality of charging slots; and a controller configured to communicate with a controller of a power storage pack and a controller of an electric movable body, wherein the controller of the charging device is configured to:
wiredly receive identification information retained in a first power storage pack from the controller of the electric movable body after the first power storage pack detached from the electric movable body is mounted in a first charging slot;
wiredly transmit the identification information received from the first power storage pack to a controller of a second power storage pack which is replaceable with the first power storage pack and which is mounted in a second charging slot;
wiredly transmit another identification information to a controller of the first power storage pack mounted in the first charging slot;
after receiving a signal transmitted via near-field communication, collate whether or not the identification informatio

Assignees

• Panasonic Ip Man Co Ltd

Inventors

• Hamamoto Katsuaki
• Kuranuki Masaaki
• Nagase Ryosuke

Classifications

• H02J7/40

  characterised by the exchange of charge or discharge related data · CPC title

• H01M50/576

  in response to theft · CPC title

• H01M10/425

  Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing (printed circuits H05K1/00) · CPC title

• H01M10/44

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

• H01M2220/20

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