Battery with a thermal tripping element

Patent metadata

Field	Value
Publication number	US-9614259-B2
Application number	US-201414198053-A
Country	US
Kind code	B2
Filing date	Mar 5, 2014
Priority date	Mar 11, 2013
Publication date	Apr 4, 2017
Grant date	Apr 4, 2017

Abstract

A battery includes a battery housing and also two connections configured to electrically conductively connect the battery to a load. The battery further includes a battery string which is positioned in the battery housing, and connects the two connections to one another. At least one battery cell is connected in series and/or in parallel with the battery string. The battery has at least one thermal tripping element which is positioned within the battery housing, and which is configured to trip when a predetermined first temperature is present in a region of the thermal tripping element, and therefore is configured to indicate a presence of this predetermined first temperature in the region of the thermal tripping element.

First claim

What is claimed is:

1. A battery comprising:
a battery housing;
two connections configured to electrically conductively connect the battery to a load;
a battery string positioned in the battery housing, wherein:
the battery string connects the two connections to one another; and
at least one battery cell is connected in at least one of (i) in series the battery string, and (ii) in parallel with the battery string; and

at least one thermal tripping element positioned within the battery housing, and configured to:
trip when a predetermined first temperature is present in a region of the at least one thermal tripping element; and
indicate that the predetermined first temperature is present in the region of the at least one thermal tripping element when tripped,

wherein the at least one thermal tripping element comprises a liquid-filled glass ampoule configured to break when the predetermined first temperature is present in the region of the at least one thermal tripping element.

2. The battery according to claim 1 , wherein:
a state of the at least one thermal tripping element is configured to change when the predetermined first temperature is present in the region of the at least one thermal tripping element; and
at least one of:
(i) a change in the state is directly visible to an external viewer of the thermal tripping element; and
(ii) an indication of a change in the state is detectable by an external viewer of the thermal tripping element.

3. The battery according to claim 1 , wherein the at least one thermal tripping element is further configured to cause an interruption in the battery string when tripped when the predetermined first temperature is present in the region of the at least one thermal tripping element.

4. The battery according to claim 3 , further comprising:
an electrical interlock circuit configured to cause an interruption in the battery string when the electrical interlock circuit is interrupted, wherein:
the electrical interlock circuit is connected to the at least one thermal tripping element; and
the at least one thermal tripping element is further configured to cause an interruption in the electrical interlock circuit when tripped.

5. The battery according to claim 3 , further comprising a thermal control circuit connected to the at least one thermal tripping element, and configured to cause an interruption in the battery string when the at least one thermal tripping element is tripped.

6. The battery according to claim 1 , wherein the liquid-filled glass ampoule has a switching function.

7. The battery according to claim 1 , further comprising at least one further thermal tripping element positioned within the battery housing, wherein a state of the at least one further thermal tripping element is configured to change when a further predetermined first temperature is present.

8. The battery according to claim 7 , wherein the predetermined first temperature is unequal to the further predetermined first temperature.

9. The battery according to claim 7 , wherein the at least one thermal tripping element and the at least one further thermal tripping element are arranged next to one another.

10. A motor vehicle comprising:
a battery connected to a drive system of the motor vehicle, and including:
a battery housing;
two connections configured to electrically conductively connect the battery to the drive system;
a battery string positioned in the battery housing, wherein:
the battery string connects the two connections to one another; and
at least one battery cell is connected in at least one of (i) in series the battery string, and (ii) in parallel with the battery string; and

at least one thermal tripping element positioned within the battery housing, and configured to:
trip when a predetermined first temperature is present in a region of the at least one thermal tripping element; and
indicate that the predetermined first temperature is present in the region of the at least one thermal tripping element when tripped,

wherein the at least one thermal tripping element comprises a liquid-filled glass ampoule configured to break when the predetermined first temperature is present in the region of the at least one thermal tripping element.

Assignees

• Bosch Gmbh Robert
• Samsung Sdi Co Ltd

Inventors

• Bergmann Sven
• Galamb Gergely
• Ziegler Stefan

Classifications

• H01M10/486 Primary

  for measuring temperature · CPC title

• H01M10/488

  Cells or batteries combined with indicating means for external visualization of the condition, e.g. by change of colour or of light density · CPC title

• H01M10/482

  for several batteries or cells simultaneously or sequentially · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title

• Y02T10/7061

  Cross-Sectional Technologies · mapped topic