Hybrid and electric vehicle battery pack maintenance device
First Claim
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1. A maintenance device for coupling to an electric vehicle and performing maintenance on an electrical system of the electric vehicle, comprising:
- a device housing;
a controller in the housing configured to control operation of the maintenance device;
a controllable load having a load size which is controlled by the controller;
low voltage input/output circuitry coupled to the controller;
a bus outside of the housing coupled to the low voltage input/output circuitry;
a low voltage junction box coupled to the bus outside of the housing, the junction box having a databus connection configured to couple to a databus of the electric vehicle to thereby receive outputs from sensors of the electric vehicle and communicate with a controller of the electric vehicle; and
a high voltage junction box having a high voltage connection configured to couple the controllable load to a high voltage battery pack of the electrical system of the vehicle.
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Abstract
The present invention includes a battery maintenance device for performing maintenance on battery packs of hybrid and/or electrical vehicles (referred herein generally as electric vehicles). In various embodiments, the device includes one or more loads for connecting to a battery pack for use in discharging the battery pack, and/or charging circuitry for use in charging the battery pack. Input/output circuitry can be provided for communicating with circuitry of in the battery pack and/or circuitry of the vehicle.
944 Citations
24 Claims
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1. A maintenance device for coupling to an electric vehicle and performing maintenance on an electrical system of the electric vehicle, comprising:
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a device housing; a controller in the housing configured to control operation of the maintenance device; a controllable load having a load size which is controlled by the controller; low voltage input/output circuitry coupled to the controller; a bus outside of the housing coupled to the low voltage input/output circuitry; a low voltage junction box coupled to the bus outside of the housing, the junction box having a databus connection configured to couple to a databus of the electric vehicle to thereby receive outputs from sensors of the electric vehicle and communicate with a controller of the electric vehicle; and a high voltage junction box having a high voltage connection configured to couple the controllable load to a high voltage battery pack of the electrical system of the vehicle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A maintenance device for coupling to an electric vehicle and performing maintenance on an electrical system of the electric vehicle, comprising:
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a housing; a controller in the housing configured to control operation of the maintenance device; operator input/output circuitry coupled to the controller; discharge circuitry comprising; a plurality of electrical loads; a plurality of insulated gate bipolar transistors responsive to the controller configured to couple at least one of the plurality of electrical loads to a battery of the electrical system whereby a size of an electrical load coupled to the battery is controlled by the controller by controlling the insulated gate bipolar transistor; and a voltage sensor electrically connected across the discharge circuitry configured to sense a voltage of the battery. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification