Battery system

Patent metadata

Field	Value
Publication number	US-2021296714-A1
Application number	US-202117339265-A
Country	US
Kind code	A1
Filing date	Jun 4, 2021
Priority date	Dec 4, 2018
Publication date	Sep 23, 2021
Grant date	—

Abstract

A battery system comprises a plurality of battery modules, each of the battery modules includes an assembled battery configured to include a plurality of battery cells connected in series, a monitoring unit configured to monitor the assembled battery, and an external member configured to be electrically connected to the monitoring unit, and the monitoring unit of each of the battery modules has a generation unit configured to generate, based on an electric signal input from the external member, an identification information item on the corresponding one of the battery modules, the identification information items of the respective battery modules being different from one another.

First claim

What is claimed is:

1 . A battery system comprising a plurality of battery modules, each of the battery modules comprising:
an assembled battery configured to include a plurality of battery cells connected in series; a monitoring unit configured to monitor the assembled battery; and a temperature sensor configured to be electrically connected to the monitoring unit, the monitoring unit of each of the battery modules comprising:
a connector configured to include a plurality of terminals and be connected to a plurality of electric wirings extending from the temperature sensor, at least one of the plurality of terminals serving as an unused terminal,
the electrical wirings being connected to the connector such that the unused terminal of the corresponding one of the battery modules is different from the unused terminal of another one of the battery modules,
the temperature sensor being configured to output voltage signals to the respective terminals of the connector;
a generation unit configured to generate, based on the voltage signals input to the respective terminals, an identification information item on the corresponding one of the battery modules, the identification information items of the respective battery modules being different from one another; and
an input processing unit configured to:
perform input processing on the voltage signals outputted from the temperature sensor with a predetermined voltage range; and
cause a voltage at the unused terminal to be outside the predetermined voltage range.

2 . A battery system comprising a plurality of battery modules, each of the battery modules comprising:
an assembled battery configured to include a plurality of battery cells connected in series; a monitoring unit configured to monitor the assembled battery; at least one first sensor electrically connected to the monitoring unit; at least one second sensor electrically connected to the monitoring unit; the at least one first sensor being configured to output a first voltage signal indicative of a temperature of the assembled battery, the at least one second temperature sensor being configured to output a second voltage signal indicative of the temperature of the assembled battery, the second voltage signal having a voltage level being different from that of the first voltage signal, the monitoring unit of each of the battery modules comprising:
a connector configured to include a plurality of terminals,
the monitoring unit of each of the battery modules having a connection pattern where each of the terminals of the corresponding one of the battery modules is connected to a selected one of the at least one first sensor and the at least one second sensor via a corresponding one of electric wirings,
the connection patterns of the battery modules being different from one another; and
a generation unit configured to generate, based on one of the first signal and the second signal input to each of the terminals, an identification information item on the corresponding one of the battery modules, the identification information items on the respective battery modules being different from one another.

3 . The battery system according to claim 2 , wherein
the one or more first sensors have a first voltage increase/decrease characteristic with respect to temperature; the one or more second sensors have a second voltage increase/decrease characteristic with respect to temperature; and the first voltage increase/decrease characteristic is the same as the second voltage increase/decrease characteristic.

4 . The battery system according to claim 1 , further comprising:
a control unit that is communicable with the monitoring unit of each of the battery modules, the control unit comprising:
a storage unit configured to store a map in which each of the battery modules is associated with a corresponding one of the identification information items;
an identification information acquisition unit configured to acquire, from the monitoring unit of each of the battery modules, a corresponding one of the identification information items; and
an identification unit configured to identify each of the battery modules based on the map and the acquired identification information item on the corresponding one of the battery modules.

5 . The battery system according to claim 2 , further comprising:
a control unit that is communicable with the monitoring unit of each of the battery modules, the control unit comprising:
a storage unit configured to store a map in which each of the battery modules is associated with a corresponding one of the identification information items;
an identification information acquisition unit configured to acquire, from the monitoring unit of each of the battery modules, a corresponding one of the identification information items; and
an identification unit configured to identify each of the battery modules based on the map and the acquired identification information item on the corresponding one of the battery modules.

6 . The battery system according to claim 3 , further comprising:
a control unit that is communicable with the monitoring unit of each of the battery modules, the control unit comprising:
a storage unit configured to store a map in which each of the battery modules is associated with a corresponding one of the identification information items;
an identification information acquisition unit configured to acquire, from the monitoring unit of each of the battery modules, a corresponding one of the identification information items; and
an identification unit configured to identify each of the battery modules based on the map and the acquired identification information item on the corresponding one of the battery modules.

Assignees

• Denso Corp

Inventors

• Yamashita Naoto
• Ito Masahiko
• Kouda Masakazu
• Onishi Hisanaga

Classifications

• H02J7/63

  against overdischarge · CPC title

• H02J7/61

  against overcharge · CPC title

• H02J7/40

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

• H02J7/80

  including monitoring or indicating arrangements · CPC title

• H02J7/50

  acting upon multiple batteries simultaneously or sequentially · CPC title