Semi-active partial parallel battery architecture for an automotive vehicle systems and methods
First Claim
1. A battery system comprising:
- a first battery electrically coupled to a first bus, wherein the first battery is configured to output first electrical power to the first bus to enable a starter electrically coupled to the first bus to crank an internal combustion engine;
a second battery electrically coupled to a second bus, wherein the second battery is configured to;
store electrical energy generated by a regenerative braking system; and
output second electrical power to the second bus using the electrical energy stored in the second battery to enable the battery system to power operation of an electrical component coupled to the second bus; and
a DC/DC converter electrically coupled between the first bus and the second bus, wherein the DC/DC converter is configured to control division of the second electrical power output from the second battery into a first portion supplied to charge the first battery via the first bus and a second portion supplied to operate the electrical component via the second bus.
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Accused Products
Abstract
An automotive battery system that includes a lead-acid battery electrically coupled to a first bus, in which the lead-acid battery supplies electrical power to a starter via the first bus to cold crank an internal combustion engine of a vehicle; a lithium-ion battery electrically coupled to a second bus, in which the lithium-ion battery captures and stores electrical energy generated by a regenerative braking system when the vehicle brakes and supplies electrical power to the second bus using the electrical energy captured from the regenerative braking system such that a first portion of the second electrical power is supplied to an electrical system; and a DC/DC converter electrically coupled between the first bus and the second bus, in which the DC/DC converter controls supply of a second portion of the second electrical power to charge the lead-acid battery.
35 Citations
16 Claims
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1. A battery system comprising:
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a first battery electrically coupled to a first bus, wherein the first battery is configured to output first electrical power to the first bus to enable a starter electrically coupled to the first bus to crank an internal combustion engine; a second battery electrically coupled to a second bus, wherein the second battery is configured to; store electrical energy generated by a regenerative braking system; and
output second electrical power to the second bus using the electrical energy stored in the second battery to enable the battery system to power operation of an electrical component coupled to the second bus; and
a DC/DC converter electrically coupled between the first bus and the second bus, wherein the DC/DC converter is configured to control division of the second electrical power output from the second battery into a first portion supplied to charge the first battery via the first bus and a second portion supplied to operate the electrical component via the second bus. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A battery module comprising:
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a first battery comprising one or more lead-acid battery cells; a first positive terminal coupled to the first battery, wherein the first positive terminal is configured to electrically couple the first battery to a first bus to enable the first battery to output at least a portion of first electrical power used to crank an internal combustion engine; a second battery comprising one or more lithium-ion battery cells;
a second positive terminal coupled to the second battery, wherein the second positive terminal is configured to electrically couple the second battery to a second bus to enable the second battery to capture electrical energy generated by a regenerative braking system and to output second electrical power used to power operation of an electrical system; anda negative terminal coupled to the first battery and the second battery, wherein the negative terminal is configured to electrically couple the first battery and the second battery to ground. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification