Power storage pack authentication method, power storage pack, charging device, electric mobile body, and electric mobile body control device

Patent metadata

Field	Value
Publication number	US-12189751-B2
Application number	US-202117758588-A
Country	US
Kind code	B2
Filing date	Jan 6, 2021
Priority date	Jan 23, 2020
Publication date	Jan 7, 2025
Grant date	Jan 7, 2025

Abstract

A first power storage pack wiredly transmits identification information retained in the first power storage pack to a charging device when the first power storage pack is detached from an electric movable body. The charging device wiredly transmits the identification information received from the first power storage pack to a second power storage pack. The controller of 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

The invention claimed is:

1. A power storage pack authentication method comprising:
wiredly transmitting, by a controller of a first power storage pack, identification information retained in the first power storage pack to a controller of a charging device when the first power storage pack detached from an 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 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;
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 when the second power storage pack detached from the second charging slot is mounted in the electric movable body; and
collating, by a 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 by 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 said transmitting via the near-field communication 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.

3. The power storage pack authentication method according to claim 1 , further comprising:
after the controller of the charging device receives identification information from the first power storage pack mounted in the first charging slot, transmitting wiredly, by the controller of the charging device, another identification information to the controller of the first power storage pack;
transmitting via near-field communication, by the controller of the first power storage pack, a signal including the another 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 the another identification information transmitted wiredly, 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 transmitted wiredly.

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 battery module 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 is configured to:
wiredly transmit identification information retained in the power storage pack to the controller of the charging device 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 another identification information from the controller of the charging device after a charging of the power storage pack is completed, the another identification information being received by the controller of the charging device from another power storage pack mounted in another charging slot; and
transmit via near-field communication a signal including the another 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.

6. The power storage pack according to claim 5 , wherein the controller is configured to:
wiredly receive identification information retained in the another power storage pack from the controller of the electric movable body before transmitting via the near-field communication the signal including the another identification information received from the charging device 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 collation result to the electric movable body; and
suspend the transmitting, via the near-field communication, of the signal including the another identification information received from the charging device when the collation information 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,
wherein the controller is configured to:
wiredly receives identification information retained in a first power storage pack from a controller of the first power storage pack after the first power storage pack detached from an 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 the 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 information included in the received signal matches the another identification information transmitted wiredly; and
authenticate that the first power storage pack mounted in the firs

Assignees

• Panasonic Ip Man Co Ltd

Inventors

• Hamamoto Katsuaki
• Kuranuki Masaaki
• Nagase Ryosuke

Classifications

• H02J7/50

  acting upon multiple batteries simultaneously or sequentially · CPC title

• H02J7/40

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

• H02J7/44

  between battery management systems and power sources · CPC title

• H02J7/47

  Arrangements for checking compatibility or authentication between one component, e.g. a battery or a battery charger, and another component, e.g. a power source · CPC title

• H01M2010/4271

  Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing · CPC title