Battery box device for electric vehicle

A battery box device for use on an electric vehicle comprising:

• a drive power supply having a plurality of storage batteries for supplying an electric energy for at least one external load outside said battery box device to drive the electric vehicle;
• a circuit breaker device having control means for producing a power supply control signal based on a condition of the electric vehicle and having a circuit breaker for turning off said drive power supply in response to the control signal from said control means;
• and
• a battery box housing at least said storage batteries and being mounted on the electric vehicle, said circuit breaker device being directly mounted on said battery box and operable from outside of said battery box for independently tuning off said drive power supply;
• wherein said circuit breaker device includes an input connector connected to said drive power supply, an output connector connectable to said at least one external load, said input connector being disposed in said battery box and said output connector being disposed outside of said battery box for electric connection to said at least one external load.

A battery box device for use on an electric vehicle, comprising:

• a drive power supply having a plurality of storage batteries for supplying an electric energy for at least one external load outside the battery box device to drive the electric vehicle;
• a circuit breaker device having control means for producing a power supply control signal based on a condition of the electric vehicle and having a circuit breaker for turning off said drive power supply in response to the control signal from said control means;
• and
• a battery box housing at least said storage batteries and being mounted on the electric vehicle, said circuit breaker device being mounted directly on said battery box operable from outside of said battery box for independently turning off said drive power supply;
• wherein said battery box has a window defined in an upper surface thereof, at least a portion of said breaker switch device projecting out of said window for permitting access to said portion of said circuit breaker device from outside the battery box.