Battery cell for a battery of a motor vehicle, battery and motor vehicle

Patent metadata

Field	Value
Publication number	US-2018034114-A1
Application number	US-201615550835-A
Country	US
Kind code	A1
Filing date	Feb 16, 2016
Priority date	Feb 18, 2015
Publication date	Feb 1, 2018
Grant date	—

Abstract

A battery cell for a battery of a motor vehicle with a battery cell housing, in which a galvanic element is housed. The battery cell can be electrically connected by way of two electrical connection terminals, to at least one other battery cell of the battery. The battery cell has an indicator device, on the basis of which a state of the battery cell can be identified from outside of the battery cell housing. The state depends on at least one parameter of the battery cell that can be detected or recorded by measurement technology, and the indicator device is designed for the purpose of indicating a change in the state of the battery cell. Furthermore, the invention relates to a battery having a plurality of such battery cells and to a motor vehicle having a battery.

First claim

1 - 10 . (canceled)

11 . A battery cell for a battery of a motor vehicle, comprising:
a battery cell housing, in which a galvanic element is housed, and with two electrical connection terminals, by way of which the battery cell can be connected electrically to at least one further battery cell of the battery, wherein the battery cell has an indicator device, on the basis of which a state of the battery cell that depends on at least one parameter of the battery cell that can be detected or recorded by measurement technology can be identified from outside of the battery cell housing, wherein the indicator device is designed for the purpose of indicating a change in the state of the battery cell.

12 . The battery cell according to claim 11 , wherein the indicator device is designed for the purpose of indicating a switching state of at least one switching element, which is designed to make and to break an electrically conductive connection between an arrester of the galvanic element and at least one of the electrical connection terminals.

13 . The battery cell according to claim 12 , wherein the at least one switching element is designed as a semiconductor component, which can be switched by means of a driver module that is arranged inside of the battery cell housing.

14 . The battery cell according to claim 11 , wherein the indicator device that is arranged at an outer side of the battery cell housing, between the two connection terminals, is designed for the purpose of indicating a transport state and/or an installation state, a defect of the battery cell, wherein the transport state and the installation state can be activated by a control unit of the battery cell.

15 . The battery cell according to claim 11 , wherein the indicator device and at least one sensor that is coupled to the indicator device are designed for the purpose of detecting or recording the at least one parameter, which comprises:
a voltage; a temperature; a current intensity of a current flowing through the battery cell; a pressure; a mechanical stress; a nature of an electrolyte of the galvanic element; and an acceleration; wherein the indicator device is designed for the purpose of indicating the state of the battery cell in relation to the at least one parameter.

16 . The battery cell according to claim 11 , wherein the indicator device is designed for the purpose of indicating at least one single value, which indicates at least one of:
a state of charge of the battery cell; a state of health of the battery cell; a number of charging operations and/or discharging operations; a temperature; a pressure; a voltage; a current intensity; a mechanical stress; an acceleration; and a nature of an electrolyte of the galvanic element.

17 . The battery cell according to claim 11 , wherein the indicator device further comprises
at least one illuminated device; a display screen; and is designed for the output of an acoustically detectable signal and of a haptically detectable signal.

18 . The battery cell according to claim 11 , wherein the indicator device:
is designed for amplifying a signal correlating with the state of the battery cell and for being supplied with electric energy is coupled to the galvanic element and to an electric energy storage unit, and is designed for wirelessly receiving transmitted energy.

Assignees

• Audi Ag

Inventors

• Hinterberger Michael
• Hellenthal Berthold

Classifications

• B60L58/10

  for monitoring or controlling batteries · CPC title

• H01M2220/20

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

• B60L58/12

  responding to state of charge [SoC] · CPC title

• H01M10/4257 Primary

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

• H01M10/0525

  Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title