Battery module for constructing a battery system for a vehicle

Patent metadata

Field	Value
Publication number	US-12531282-B2
Application number	US-202117801142-A
Country	US
Kind code	B2
Filing date	Feb 19, 2021
Priority date	Feb 19, 2020
Publication date	Jan 20, 2026
Grant date	Jan 20, 2026

Abstract

A battery module for constructing a battery system for a vehicle includes at least one battery cell and a battery management controller (BMC) with a battery management controller interface (BMCS). The battery management controller interface (BMCS) has at least two address contacts for allocating an address to the battery module, and the battery management controller (BMC) is designed and configured to detect the assignment of the address contacts and derive therefrom an address for the battery module.

First claim

The invention claimed is:

1 . A battery module for constructing a battery system for a vehicle, comprising:
a battery cell; and a battery management controller (BMC) having a battery management controller interface (BMCS), wherein:
the BMCS comprises two address contacts configured to assign an address to the battery module,
the BMC is configured to detect an assignment of the two address contacts and derive the address of the battery module therefrom,
each of the two address contacts is contacted with a controlled area network (CAN) connector via an addressing pin, and the two address contacts are connected to electrical potentials,
an electrical connection between a first addressing pin and a first potential is interpreted by the BMC as a logical 0, and an electrical connection between a second addressing pin and a free potential is interpreted by the BMC as a logical 1,
a combination of electrical connections of the two addressing pins of the BMC is interpreted as the address of the battery module,
a role of the battery module in a topology of the battery system is encoded in the address of the battery module, and
the BMC is further configured to detect its role in the topology of the battery system with an aid of the connector connected to the BMCS and an assignment of the connector.

2 . The battery module of claim 1 , wherein an electrical connection between the second addressing pin and a different second potential is interpreted by the BMC as a logical 1.

3 . The battery module of claim 1 , wherein the first potential is the ground of the CAN connector, and the two addressing pins are selectable pins of the CAN connector.

4 . The battery module of claim 1 , wherein a topology of the battery module and/or the topology of the battery system is encoded in the address of the battery module.

5 . A battery system comprising:
the battery module of claim 1 ; and a cable harness having two connectors configured to connect two battery modules comprising the battery module of claim 1 and another battery module, wherein the two connectors are assigned to address contacts of the two battery modules in different fashions, wherein the two battery modules are joined together with the cable harness in a central control unit.

6 . The battery system of claim 5 , wherein different addresses of the two battery modules are assigned to an overall topology in the central control unit.

7 . The battery system of claim 5 , wherein:
the central control unit is designed in a battery module, the central control unit is designed independent of the battery module, and/or the central control unit is formed by a control module.

8 . A method for communicating between a central control unit and the battery module of claim 1 , comprising:
communicating, by the central control unit, with the battery module via the assigned address of the battery module; transmitting, by the battery module, the assigned address of the battery module when communicating; and/or identifying, by the central control unit, the battery module by the assigned address of the battery module.

9 . A control module for constructing a battery system for a vehicle, comprising:
a controller with an interface, wherein:
the interface comprises two address contacts configured to assign an address to the control module,
the controller is configured to detect an assignment of the two address contacts and to derive an address of the control module therefrom,
each of the two address contacts is contacted with a controlled area network (CAN) connector via an addressing pin, and the two address contacts are connected to electrical potentials,
an electrical connection between a first addressing pin and a first potential is interpreted by the controller as a logical 0, and an electrical connection between a second addressing pin and a free potential is interpreted by the controller as a logical 1,
a combination of electrical connections of the two addressing pins of the controller is interpreted as the address of the control module,
a role of the controller in a topology of the battery system is encoded in an address of the battery module, and
the controller is further configured to detect its role in the topology of the battery system with an aid of the connector connected to the interface and an assignment of the connector.

10 . The control module of claim 9 , wherein an electrical connection between the second addressing pin and a different second potential is interpreted by the controller as a logical 1.

11 . The control module of claim 9 , wherein the first potential is the ground of the CAN connector, and the two addressing pins are selectable pins of the CAN connector.

12 . The control module of claim 9 , wherein the topology of the battery system is encoded in the address.

Assignees

• Webasto SE

Inventors

• Assmann Patrick
• Langhof Björn

Classifications

• H01M2220/20

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

• H01M2010/4278

  Systems for data transfer from batteries, e.g. transfer of battery parameters to a controller, data transferred between battery controller and main controller · CPC title

• H01M10/482

  for several batteries or cells simultaneously or sequentially · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title

• H01M10/4257 Primary

  Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries · CPC title