Over-Current ProtectionOver-Current Protection

OverviewOverview

Protection circuitry is required to Protection circuitry is required to ensure that electrical components ensure that electrical components are protected during malfunctionare protected during malfunction

Battery cell protection, as well as Battery cell protection, as well as component protection primarily component protection primarily encompass over-current protection.encompass over-current protection.

ConcernsConcerns

Large peak current (67.8A)Large peak current (67.8A) Battery details currently unknownBattery details currently unknown Exact electronic characteristics Exact electronic characteristics

(threshold) values unknown for (threshold) values unknown for modulesmodules

Inner environment characteristics of Inner environment characteristics of RP unknownRP unknown

Concept #1Concept #1

Resettable FuseResettable Fuse• ProsPros

Acts as an over temperature detectorActs as an over temperature detector Manual resetting/replacement not requiredManual resetting/replacement not required Does not require operation awarenessDoes not require operation awareness Easy integrationEasy integration

• ConsCons Low “trip” currents in high temperatureLow “trip” currents in high temperature Requires extensive environment researchRequires extensive environment research

Resettable FuseResettable Fuse

Concept #2Concept #2

Hot Plug ControllerHot Plug Controller• ProsPros

Customizable “trip” currentCustomizable “trip” current Manual resetting/replacement not requiredManual resetting/replacement not required Does not require operation awarenessDoes not require operation awareness Kill switch feature availableKill switch feature available

• ConsCons Complex implementationComplex implementation

Hot Plug ControllerHot Plug Controller

Preliminary AnalysisPreliminary Analysis

Preliminary AnalysisPreliminary Analysis

Preliminary AnalysisPreliminary Analysis

Improved ConceptImproved Concept

Initial concept only consisted of a Initial concept only consisted of a standard fusestandard fuse

Did not take into account start-up Did not take into account start-up characteristics characteristics