Method and system for charging a vehicle high voltage battery
First Claim
1. A method for charging a battery in one of a hybrid vehicle and an electric vehicle comprising:
- calculating an amount of energy consumption for charging a battery by taking the sum of a first amount of energy for charging a high voltage battery and a second amount of energy for use by a low voltage auxiliary system during charging;
determining an optimal charge current for a charger based on a charging option, the charging option providing a set of desired charging parameters for a charger controller;
determining a state of charge of the battery within a state of charge range; and
controlling the charger using the charger controller to provide a charge current to the battery, wherein the charge current is the optimal charge current up to a maximum charge current for the state of charge range of the battery.
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Abstract
A method and a system for charging a battery in hybrid vehicles and electric vehicles are provided. An amount of energy consumption for charging a battery is calculated by taking the sum of a first amount of energy for charging a high voltage battery and a second amount of energy for use by a low voltage auxiliary system during charging. An optimal charge current for a charger is determined based on a charging option. The charging option provides a set of desired charging parameters for a charger controller. A state of charge of the battery is determined within a state of charge range. The charger controller provides a charge current to the battery. The charge current is the optimal charge current up to a maximum charge current for the state of charge range of the battery.
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Citations
21 Claims
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1. A method for charging a battery in one of a hybrid vehicle and an electric vehicle comprising:
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calculating an amount of energy consumption for charging a battery by taking the sum of a first amount of energy for charging a high voltage battery and a second amount of energy for use by a low voltage auxiliary system during charging; determining an optimal charge current for a charger based on a charging option, the charging option providing a set of desired charging parameters for a charger controller; determining a state of charge of the battery within a state of charge range; and controlling the charger using the charger controller to provide a charge current to the battery, wherein the charge current is the optimal charge current up to a maximum charge current for the state of charge range of the battery. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A battery charging system for an electrically powered vehicle having a rechargeable high voltage battery, the system comprising:
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a battery charger adapted to provide a charge current to the battery; and a battery controller configured to command battery charging at an optimal charge current based on low voltage power of the auxiliary system and resistance of the battery and representing a minimized amount of energy consumption to operate an auxiliary system while charging the battery. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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21. A method for charging a vehicle battery comprising:
calculating an optimal charge current generally defined by
Specification