A handheld device for jump starting a vehicle engine includes a power supply such as a rechargeable lithium ion battery pack (32) and a microcontroller (1). The power supply is coupled to power output connectors of the device through a power switch circuit (15) actuated by the microcontroller. A first sensor (12) connected in circuit with positive and negative polarity outputs detects the presence of a vehicle battery (72) connected between the positive and negative polarity outputs. A second sensor (10) connected in circuit with the positive and negative polarity outputs detects the polarity of a vehicle battery connected between the positive and negative polarity outputs, such that the microcontroller will enable power to be delivered from the power supply to the output connectors only when a good battery is connected to the output connectors and only when the battery is connected with proper polarity of positive and negative terminals.


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    Title :

    Portable vehicle battery jump start apparatus with safety protection



    Publication date :

    2021-01-07


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR



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