Non-sequential monitoring of battery cells in battery monitoring systems, and related components, systems, and methods
First Claim
1. A battery monitoring system control unit configured to control a plurality of battery monitoring devices, each battery monitoring device configured to be coupled to a subset of a plurality of battery cells electrically connected in series in a sequential order to form a battery,the battery monitoring system control unit further configured to instruct the plurality of battery monitoring devices to test an ohmic value of each battery cell of the plurality of battery cells of the battery in a non-sequential order in which no adjacent battery cell among the plurality of battery cells is instructed to test an ohmic value in a sequential order,wherein each subset of the plurality of battery cells includes M battery cells, wherein M is an integer greater than or equal to two (2),wherein the total number of battery cells of the battery includes N battery cells, wherein N is an integer greater than or equal to four (4), andwherein the order in which each battery cell I among the N battery cells is configured to be tested is (N/M)[(I−
- 1) mod M]+floor[(I−
1)/M]+1, wherein I is an integer between 1 and N inclusive.
1 Assignment
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Accused Products
Abstract
Non-sequential monitoring of battery cells in battery monitoring systems, and related components, systems, and methods are disclosed. In one embodiment, a battery monitoring system control unit is provided. The battery monitoring system control unit is configured to control battery monitoring devices. Each battery monitoring device is configured to be coupled to a subset of battery cells electrically connected in series in a sequential order to form a battery. The battery monitoring system control unit is further configured to instruct the battery monitoring devices to test an ohmic value of each battery cell of the battery cells of the battery in a non-sequential order. In this manner, heat generated in the battery monitoring devices from the testing may be more effectively dissipated, which can also allow for the battery monitoring devices to be employed in higher operating temperature environments.
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Citations
33 Claims
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1. A battery monitoring system control unit configured to control a plurality of battery monitoring devices, each battery monitoring device configured to be coupled to a subset of a plurality of battery cells electrically connected in series in a sequential order to form a battery,
the battery monitoring system control unit further configured to instruct the plurality of battery monitoring devices to test an ohmic value of each battery cell of the plurality of battery cells of the battery in a non-sequential order in which no adjacent battery cell among the plurality of battery cells is instructed to test an ohmic value in a sequential order, wherein each subset of the plurality of battery cells includes M battery cells, wherein M is an integer greater than or equal to two (2), wherein the total number of battery cells of the battery includes N battery cells, wherein N is an integer greater than or equal to four (4), and wherein the order in which each battery cell I among the N battery cells is configured to be tested is (N/M)[(I− - 1) mod M]+floor[(I−
1)/M]+1, wherein I is an integer between 1 and N inclusive. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
- 1) mod M]+floor[(I−
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9. A battery monitoring system, comprising:
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a battery comprised of a plurality of battery cells electrically connected in series; a plurality of battery monitoring devices each configured to be coupled to a subset of the plurality of battery cells; and at least one battery monitoring system control unit configured to instruct the plurality of battery monitoring devices to test an ohmic value of each battery cell of the plurality of battery cells of the battery in a non-sequential order in which no adjacent battery cell among the plurality of battery cells is instructed to test an ohmic value in a sequential order, wherein each subset of the plurality of battery cells includes M battery cells, wherein M is an integer greater than or equal to two (2), wherein the total number of battery cells of the battery includes N battery cells, wherein N is an integer greater than or equal to four (4), and wherein the order in which each battery cell I among the N battery cells is configured to be tested is (N/M)[(I−
1) mod M]+floor[(I−
1)/M]+1, wherein I is an integer between 1 and N inclusive. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A method of a battery monitoring system control unit, comprising instructing a plurality of battery monitoring devices to test a plurality of battery cells electrically connected in series in a sequential order to form a battery by testing an ohmic value of each battery cell of the plurality of battery cells of the battery in a non-sequential order in which no adjacent battery cell among the plurality of battery cells is instructed to test an ohmic value in a sequential order,
wherein the plurality of battery cells comprise a plurality of subsets of battery cells, wherein each of the plurality of subsets of battery cells includes M battery cells, wherein M is an integer greater than or equal to two (2), wherein the total number of battery cells of the battery includes N battery cells, wherein N is an integer greater than or equal to four (4), and wherein the instructing a plurality of battery monitoring devices comprises instructing the plurality of battery monitoring devices to test the plurality of battery cells in a non-sequential order, wherein the non-sequential order in which each battery cell I among the N battery cells is configured to be tested is (N/M)[(I− - 1) mod M]+floor[(I−
1)/M]+1, wherein I is an integer between 1 and N inclusive. - View Dependent Claims (18, 19, 20, 21, 22, 23)
- 1) mod M]+floor[(I−
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24. A non-transitory computer-readable medium having stored thereon computer-executable instructions to cause a processor to implement a method for controlling a plurality of battery monitoring devices to test an ohmic value of each battery cell of a battery, comprising:
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instructing a plurality of battery monitoring devices to test a plurality of battery cells electrically connected in series in a sequential order to form a battery by testing an ohmic value of each battery cell of the plurality of battery cells of the battery in a non-sequential order in which no adjacent battery cell among the plurality of battery cells is instructed to test an ohmic value in a sequential order, wherein the plurality of battery cells comprise a plurality of subsets of battery cells, wherein each of the plurality of subsets of battery cells includes M battery cells, wherein M is an integer greater than or equal to two (2), wherein the total number of battery cells of the battery includes N battery cells, wherein N is an integer greater than or equal to four (4), and wherein the instructing a plurality of battery monitoring devices comprises instructing the plurality of battery monitoring devices to test the plurality of battery cells in a non-sequential order, wherein the non-sequential order in which each battery cell I among the N battery cells is configured to be tested is (N/M)[(I−
1) mod M]+floor[(I−
1)/M]+1, wherein I is an integer between 1 and N inclusive.
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25. A battery monitoring system for testing ohmic values of battery cells of a battery, comprising:
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a plurality of battery monitoring devices, each battery monitoring device configured to be coupled to a subset of a plurality of battery cells electrically connected in series in a sequential order to form a battery, wherein each battery monitoring device comprises a plurality of current leads configured to be coupled to the subset of battery cells assigned to the battery monitoring device to induce a current through the subset of battery cells;
wherein each battery monitoring device further comprises a plurality of voltage leads configured to be coupled to the subset of battery cells assigned to the battery monitoring device to measure a voltage of each battery cell of the subset;a battery monitoring system control unit configured to control the plurality of battery monitoring devices, wherein each of the plurality of battery monitoring devices is configured to be coupled to a fiber optic loop for communications with the battery monitoring system control unit, wherein the battery monitoring system control unit is further configured to receive at least one pilot cell temperature measurement of the plurality of battery cells, wherein the battery monitoring system control unit is further configured to receive at least one battery current measurement of the battery, and wherein the battery monitoring system control unit is further configured to instruct the plurality of battery monitoring devices to test an ohmic value of each battery cell of the plurality of battery cells of the battery in a non-sequential order in which no adjacent battery cell among the plurality of battery cells is instructed to test an ohmic value in a sequential order, wherein each subset of a plurality of battery cells includes M battery cells, wherein M is an integer greater than or equal to two (2), wherein the total number of battery cells of the battery includes N battery cells, wherein N is an integer greater than or equal to four (4), and wherein the order in which each battery cell I among the N battery cells is configured to be tested is (N/M)[(I−
1) mod M]+floor[(I−
1)/M]+1, wherein I is an integer between 1 and N inclusive. - View Dependent Claims (26, 27, 28, 29, 30, 31)
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32. A battery monitoring system control unit configured to control a plurality of battery monitoring devices, each battery monitoring device configured to be coupled to a subset of a plurality of battery cells electrically connected in series in a sequential order to form a battery,
the battery monitoring system control unit further configured to instruct the plurality of battery monitoring devices to test an ohmic value of each battery cell of the plurality of battery cells of the battery in a non-sequential order in which no adjacent battery cell among the plurality of battery cells is instructed to test an ohmic value in a sequential order, wherein the plurality of battery cells comprise a plurality of subsets of battery cells, wherein each of the plurality of subsets of battery cells includes M battery cells, wherein M is an integer greater than or equal to two (2), wherein the total number of battery cells of the battery includes N battery cells, wherein N is an integer greater than or equal to four (4), and wherein the battery monitoring control unit is further configured to test each of the N battery cells in a non-sequential order, and wherein the non-sequential order comprises: -
a first battery cell from a first subset of the plurality of subsets of battery cells; a first battery cell from a second subset of the plurality of subsets of battery cells; wherein a second battery cell from the first subset of the plurality of subsets of battery cells is not tested before at least a first battery cell is tested from the second subset of the plurality of subsets of battery cells; and wherein the non-sequential order comprises testing the first single battery cell from a first subset of the plurality of subsets of battery cells before testing the first battery cell from the second subset of the plurality of subsets.
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33. A battery monitoring system control unit configured to control a plurality of battery monitoring devices, each battery monitoring device configured to be coupled to a subset of a plurality of battery cells electrically connected in series in a sequential order to form a battery,
the battery monitoring system control unit further configured to instruct the plurality of battery monitoring devices to test an ohmic value of each battery cell of the plurality of battery cells of the battery in a non-sequential order in which no adjacent battery cell among the plurality of battery cells is instructed to test an ohmic value in a sequential order, wherein the plurality of battery cells comprise a plurality of subsets of battery cells, wherein each of the plurality of subsets of battery cells includes M battery cells, wherein M is an integer greater than or equal to two (2), wherein the total number of battery cells of the battery includes N battery cells, wherein N is an integer greater than or equal to four (4), and wherein the battery monitoring control unit is further configured to test each of the N battery cells in a non-sequential order, and wherein the non-sequential order comprises: -
a first battery cell from a first subset of the plurality of subsets of battery cells; a first battery cell from a second subset of the plurality of subsets of battery cells; wherein a second battery cell from the first subset of the plurality of subsets of battery cells is not tested before at least a first battery cell is tested from the second subset of the plurality of subsets of battery cells; and wherein the battery monitoring control unit is further configured to test each of the N battery cells in a non-sequential order, wherein the non-sequential order comprises; testing only a single battery cell from a first subset of the plurality of subsets of battery cells during a first time period; testing only a single battery cell from a second subset of the plurality of subsets of battery cells during a second time period after the first time period; and wherein a second battery cell from the first subset of the plurality of subsets of battery cells is not tested before at least a first battery cell is tested from the second subset of the plurality of subsets of battery cells.
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Specification