Circuit breaker health monitoring
US-10732223-B2 · Aug 4, 2020 · US
Diagnostic device, energy storage apparatus, and diagnostic method
US11927636B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11927636-B2 |
| Application number | US-201916980096-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 27, 2019 |
| Priority date | Mar 27, 2018 |
| Publication date | Mar 12, 2024 |
| Grant date | Mar 12, 2024 |
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- Title
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Abstract
Official abstract text for this publication.
A diagnostic device and method diagnoses damage to a breaker that interrupts a current of an energy storage device. The damage to the breaker is diagnosed on the basis of a short-circuit current at a time of an external short circuit. The damage to the breaker can also be diagnosed on a basis of a short-circuit current during a first time from detection to interruption of a short circuit, and a short-circuit current during a second time from the interruption to convergence of the short-circuit current. An energy storage apparatus can include the diagnostic device.
First claim
Opening claim text (preview).
The invention claimed is: 1. An energy storage apparatus comprising: an energy storage device comprising a lithium ion secondary battery; a breaker that interrupts a current of the energy storage device; a management device comprising a processing unit that sends an interruption command and a recovery command to switch the breaker; a housing that houses the energy storage device; and an external terminal provided in the housing, wherein the breaker is provided in a conduction path connecting the energy storage device and the external terminal, wherein the processing unit determines whether the breaker is reusable on a basis of at least two elements including a magnitude of a short-circuit current flowed through the energy storage device, the breaker, and the external terminal at a time of an external short circuit of the external terminal, a number of external short circuits of the external terminal taken place, a time during which the short-circuit current flowed through the breaker, and wherein the processing unit sends, if the breaker is determined to be reusable, the recovery command to switch the breaker from open to close and to cause the energy storage apparatus to return to a usable state. 2. The energy storage apparatus according to claim 1 , wherein the breaker comprises a semiconductor switch. 3. An energy storage apparatus comprising: an energy storage device comprising a lithium ion secondary battery; a breaker that interrupts a current of the energy storage device; a management device comprising a processing unit that sends an interruption command and a recovery command to switch the breaker; a housing that houses the energy storage device; and an external terminal provided in the housing, wherein the breaker is provided in a conduction path connecting the energy storage device and the external terminal, wherein the processing unit determines whether the breaker is reusable on a basis of a short-circuit current during a first time from a detection to an interruption of a short circuit, and a short-circuit current during a second time from the interruption to convergence of the short-circuit current, and wherein the processing unit sends, if the breaker is determined to be reusable, the recovery command to switch the breaker from open to close and to cause the energy storage apparatus to return to a usable state. 4. The energy storage apparatus according to claim 3 , wherein the processing unit determines a damage to the breaker on a basis of a heat generation amount of the breaker during the first time and a heat generation amount of the breaker during the second time. 5. The energy storage apparatus according to claim 3 , wherein the breaker comprises a semiconductor switch.
Assignees
Inventors
Classifications
- G01R31/3277Primary
of low voltage devices, e.g. domestic or industrial devices, such as motor protections, relays, rotation switches · CPC title
Testing for short-circuits, leakage current or ground faults · CPC title
with fusing elements · CPC title
with breakable contacts · CPC title
Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing (printed circuits H05K1/00) · CPC title
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- What does patent US11927636B2 cover?
- A diagnostic device and method diagnoses damage to a breaker that interrupts a current of an energy storage device. The damage to the breaker is diagnosed on the basis of a short-circuit current at a time of an external short circuit. The damage to the breaker can also be diagnosed on a basis of a short-circuit current during a first time from detection to interruption of a short circuit, and a…
- Who is the assignee on this patent?
- Gs Yuasa Int Ltd
- What technology area does this patent fall under?
- Primary CPC classification G01R31/3277. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Mar 12 2024 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).