Battery power source control and current detection systems and methods
First Claim
1. A battery system, comprising:
- a plurality of battery packs;
a plurality of battery electronic control units, each associated with a battery pack of the plurality of battery packs, wherein each battery electronic control unit is configured to acquire analog current measurements of the associated battery pack and to convert the acquired analog current measurements to digital values such that the plurality of battery electronic control units produce a plurality of digital values; and
a battery system electronic control unit configured to;
receive and monitor the plurality of digital values;
control a sample speed at which the plurality of battery electronic control units sample the analog current measurements based on a variance of the analog current measurements associated with each battery pack of the plurality of battery packs;
determine a total battery system current value based on the plurality of digital values; and
control cooling of a first battery pack of the plurality of battery packs in response to a first analog current measurement associated with the first battery pack being greater than a second analog current measurement associated with a second battery pack of the plurality of battery packs.
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Accused Products
Abstract
Provided battery systems include a plurality of battery electronic control units, each associated with a battery pack of a plurality of battery packs. Each battery electronic control unit is adapted to acquire analog current measurements of the associated battery pack and to convert the acquired analog current measurements to a digital value such that the plurality of battery electronic control units produce a plurality of digital values. The system may sum the digital values, or may process pulse-width modulated signals, analog signals and so forth. A battery system electronic control unit is adapted to receive and monitor the plurality of digital values and to determine a total battery system current value based on the received plurality of digital values.
15 Citations
19 Claims
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1. A battery system, comprising:
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a plurality of battery packs; a plurality of battery electronic control units, each associated with a battery pack of the plurality of battery packs, wherein each battery electronic control unit is configured to acquire analog current measurements of the associated battery pack and to convert the acquired analog current measurements to digital values such that the plurality of battery electronic control units produce a plurality of digital values; and a battery system electronic control unit configured to; receive and monitor the plurality of digital values; control a sample speed at which the plurality of battery electronic control units sample the analog current measurements based on a variance of the analog current measurements associated with each battery pack of the plurality of battery packs; determine a total battery system current value based on the plurality of digital values; and control cooling of a first battery pack of the plurality of battery packs in response to a first analog current measurement associated with the first battery pack being greater than a second analog current measurement associated with a second battery pack of the plurality of battery packs. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A battery monitoring method, comprising:
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receiving a respective set of digital values from each of a plurality of battery electronic control units, wherein the respective set of digital values from each of the plurality of battery control units is associated with a respective battery pack of a plurality of battery packs, wherein each respective set of the digital values corresponds to a plurality of analog current measurements of the respective battery pack of the plurality of battery packs; controlling each of the plurality of battery electronic control units to sample the respective plurality of analog current measurements at a respective sample speed at which a respective battery electronic control unit of the plurality of battery electronic control units samples the respective plurality of analog current measurements; adjusting the respective sample speed for the respective battery electronic control units based on a change of the respective plurality of analog current measurements; determining when a first analog current measurement of a first battery pack of the plurality of battery packs is different than a second analog current measurement of a second battery pack of the plurality of battery packs; and controlling the respective battery electronic control unit associated with the first battery pack to increase cooling of the first battery pack based on a difference between the first analog current measurement and the second analog current measurement. - View Dependent Claims (11, 12, 13, 14)
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15. A battery system, comprising:
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a plurality of battery electronic control units, each associated with a battery pack of a plurality of battery packs, wherein each battery electronic control unit is configured to acquire analog current measurements of the associated battery pack and to convert the acquired analog current measurements to digital values such that the plurality of battery electronic control units produce a plurality of digital values; and a battery system electronic control unit configured to; receive and monitor the plurality of digital values and to determine a total battery system current value based on the received plurality of digital values; control a sample speed at which each of the plurality of battery electronic control units sample the analog current measurements of the associated battery pack based on a variance between the analog current measurements; and control cooling of a first battery pack of the plurality of battery packs in response to a first analog current measurement associated with the first battery pack being greater than a second analog current measurement associated with a second battery pack of the plurality of battery packs. - View Dependent Claims (16, 17, 18, 19)
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Specification