Switching device for a battery, and battery comprising said switching device

• US 10,224,531 B2
• Filed: 01/30/2015
• Issued: 03/05/2019
• Est. Priority Date: 02/18/2014
• Status: Active Grant

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Chen, Chen
• Primary Examiner(s): McConnell, Wyatt P
• Application Number:
  US15/119,164
• Publication Number:
  US 20170012273A1
• Time in Patent Office: 1,495 Days
• Field of Search: None
• CPC Class Codes: B60L 1/00 Supplying electric power to auxiliary equipment of vehicles circuit arrangements for charging batteries H02J7/00
• CPC Class Codes: B60L 3/00 Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption methods or circuit arrangements for monitoring or controlling batteries or fuel cells B60L58/00
• CPC Class Codes: B60L 3/0046 relating to electric energy storage systems, e.g. batteries or capacitors
• CPC Class Codes: B60L 3/04 Cutting off the power supply under fault conditions protective devices and circuit arrangements in general H01H; H02H
• CPC Class Codes: B60L 50/70 using power supplied by fuel cells in combination with batteries B60L50/75
• CPC Class Codes: B60R 16/033 characterised by the use of electrical cells or batteries for propulsion puposes B60K1/04; supplying batteries to, or removing batteries from, vehicles B60S5/06; testing of charge state G01R31/36
• CPC Class Codes: H01M 10/48 Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals, H01M50/569
• CPC Class Codes: H01M 10/488 Cells or batteries combined with indicating means for external visualization of the condition, e.g. by change of colour or of light density
• CPC Class Codes: H01M 2200/00 Safety devices for primary or secondary batteries
• CPC Class Codes: H01M 2220/20 Batteries in motive systems, e.g. vehicle, ship, plane
• CPC Class Codes: H01M 50/222 Inorganic material
• CPC Class Codes: H01M 50/572 Means for preventing undesired use or discharge
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 90/40 Application of hydrogen technology to transportation, e.g. using fuel cells

Abstract

The present invention relates to a switching device 1 for a battery 2, the switching device 1 being activated by an acoustic resonance effect to interrupt an electric line of the battery 2 to the outside. The present invention further relates to a battery 2 having an electrically activated power switch 21 for interruption of an electric line of the battery 2 to the outside and at least one such switching device 1, the power switch 21 and the switching device 1 being connected in series.

Claims

1. A switching device (1) for a battery (2), wherein the switching device (1) is configured to be operated by an acoustic resonance effect in order to interrupt an electrical line of the battery (2) to a device located outside of the battery, wherein the switching device (1) has at least one container (12) which is prestressed by a spring element (11) and is configured to be destroyed by acoustic resonance.

2. The switching device (1) as claimed in claim 1, wherein the container (12) is a hollow body which is composed of a fragile material.

3. The switching device (1) as claimed in claim 1, wherein the container (12) is composed of a ceramic material or a glass material.

4. The switching device (1) as claimed in claim 1, wherein the container (12) contains an inert gas.

5. The switching device (1) as claimed in claim 4, wherein the inert gas is a quenching gas.

6. A battery (2) comprising:

a circuit breaker (21) configured to be electrically operated, for interrupting an electrical line to a device outside of the battery, and

at least one switching device (1) configured to be operated by an acoustic resonance effect, wherein the circuit breaker (21) and the switching device (1) are connected in series, and wherein the switching device includes a container prestressed by a spring element, the container configured to release a gas in response to being destroyed by the acoustic resonance effect.

7. The battery (2) as claimed in claim 6, wherein the switching device (1) is arranged in a housing (20) of the battery (2) such that the switching device (1) is visible from outside of the battery.

8. The battery (2) as claimed in claim 6, wherein the battery (2) further has a signal transmitter (22) for outputting an acoustic signal.

9. The battery (2) as claimed in claim 6, wherein the battery (2) further has a gas sensor configured to detect a gas released by the at least one switching device.

10. The battery (2) as claimed in claim 6, wherein the battery (2) has an interconnected arrangement of a plurality of rechargeable battery cells.