Architectures for batteries having two different chemistries
First Claim
1. An automotive battery module comprising:
- a housing;
a first terminal and a second terminal coupled to the housing of the automotive battery module;
a first battery that utilizes a first battery chemistry, wherein the first battery is disposed in the housing and electrically coupled to the second terminal of the automotive battery module;
a second battery that utilizes a second battery chemistry different from the first battery chemistry, wherein the second battery is disposed in the housing and electrically coupled to the second terminal of the automotive battery module;
one or more switching devices disposed in the housing and electrically coupled between the first terminal and the second terminal of the automotive battery module; and
a battery control unit disposed in the housing of the automotive battery module, wherein the battery control unit is communicatively coupled to each of the one or more switching devices to enable the battery control unit to selectively control a first electrical connection between the first battery and the first terminal of the automotive battery module, a second electrical connection between the second battery and the first terminal of the automotive battery module, or both.
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Accused Products
Abstract
A 12 volt automotive battery system includes a first battery coupled to an electrical system, in which the first battery include a first battery chemistry, and a second battery coupled in parallel with the first battery and selectively coupled to the electrical system via a first switch, in which the second battery includes a second battery chemistry that has a higher coulombic efficiency than the first battery chemistry. The first switch couples the second battery to the electrical system during regenerative braking to enable the second battery to capture a majority of the power generated during regenerative braking. The 12 volt automotive battery system further includes a variable voltage alternator that outputs a first voltage during regenerative braking to charge the second battery and a second voltage otherwise, in which the first voltage is higher than the second voltage.
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Citations
20 Claims
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1. An automotive battery module comprising:
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a housing; a first terminal and a second terminal coupled to the housing of the automotive battery module; a first battery that utilizes a first battery chemistry, wherein the first battery is disposed in the housing and electrically coupled to the second terminal of the automotive battery module; a second battery that utilizes a second battery chemistry different from the first battery chemistry, wherein the second battery is disposed in the housing and electrically coupled to the second terminal of the automotive battery module; one or more switching devices disposed in the housing and electrically coupled between the first terminal and the second terminal of the automotive battery module; and a battery control unit disposed in the housing of the automotive battery module, wherein the battery control unit is communicatively coupled to each of the one or more switching devices to enable the battery control unit to selectively control a first electrical connection between the first battery and the first terminal of the automotive battery module, a second electrical connection between the second battery and the first terminal of the automotive battery module, or both. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for implementing an automotive battery module, comprising:
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disposing a first battery implemented using a first battery chemistry in a housing of the automotive battery module; electrically coupling the first battery to a first terminal of the automotive battery module; disposing a second battery implemented using a second battery chemistry different from the first battery chemistry in the housing of the automotive battery module; electrically coupling the second battery to the first terminal of the automotive battery module; electrically coupling one or more switching devices between the first terminal and a second terminal of the automotive battery module; coupling a battery control unit to the housing of the automotive battery module; and communicatively coupling the battery control unit to each of the one or more switching devices to enable the battery control unit to selectively control a first electrical connection between the first battery and the second terminal of the automotive battery module, a second electrical connection between the second battery and the second terminal of the automotive battery module, or both. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A battery system configured to be electrically coupled to an electrical system of an automotive vehicle, comprising:
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a lead-acid battery; a lithium nickel manganese cobalt oxide battery coupled in series with a first relay, wherein the lithium nickel manganese cobalt oxide battery and the first relay are coupled in parallel with the lead-acid battery; and a control unit communicatively coupled to the first relay, wherein the control unit is configured to; determine whether electrical power being supplied to the battery system is greater than a maximum charging power of the lithium nickel manganese cobalt oxide battery; and instruct the first relay to switch from a closed position to an open position, to maintain the open position, or both to electrically disconnect the lithium nickel manganese cobalt oxide battery when the electrical power being supplied to the battery system is greater than the maximum charging power of the lithium nickel manganese cobalt oxide battery. - View Dependent Claims (18, 19, 20)
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Specification