Power management in electric vehicles
First Claim
1. An electric vehicle power management system for managing a plurality of battery modules, the electric vehicle power management system comprising:
- a plurality of battery management systems; and
an energy management system comprising an energy management processor and an energy management communication module, wherein the energy management system is operatively connected to each battery management system via a unique wireless channel and is configured to;
select a first wireless channel from a plurality of wireless channels, the selected first wireless channel corresponding to a unique wireless channel of a first selected battery management system; and
transmit a first command to the first selected battery management system using the selected first wireless channel; and
,wherein each of the plurality of battery management systems is configured to;
receive commands from the energy management system transmitted via its respective unique wireless frequency channel; and
upon receiving a command from the energy management system transmitted via its respective unique wireless frequency channel, process and respond to the received command;
receive a response to the first command from the first selected battery management system;
after receiving the response from the first selected battery management system, determine a second wireless frequency channel from the plurality of wireless frequency channels in the wireless data channel, the determined second wireless frequency channel corresponding to the unique wireless frequency channel of a second selected battery management system;
transmit a second command to the second selected battery management system using the determined second wireless frequency channel;
set a communication interval time;
identify a finishing time, the finishing time being a time of termination of communications between the energy management system and the first selected battery management system, wherein the communication interval time is initiated after the finishing time; and
transmit the second command to the second selected battery management system upon completion of the communication interval.
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Accused Products
Abstract
Various techniques described herein relate to electric vehicle power management system for managing a plurality of battery modules in a battery pack. Such electric vehicle power management system may include a plurality of battery management systems corresponding to a plurality of battery modules, and an energy management system for managing the plurality of battery management systems. The energy management system and the plurality of battery management systems may adopt master-slave wireless communication, and may use a single wireless frequency channel or a plurality of assigned wireless frequency channels.
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Citations
15 Claims
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1. An electric vehicle power management system for managing a plurality of battery modules, the electric vehicle power management system comprising:
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a plurality of battery management systems; and an energy management system comprising an energy management processor and an energy management communication module, wherein the energy management system is operatively connected to each battery management system via a unique wireless channel and is configured to; select a first wireless channel from a plurality of wireless channels, the selected first wireless channel corresponding to a unique wireless channel of a first selected battery management system; and transmit a first command to the first selected battery management system using the selected first wireless channel; and
,wherein each of the plurality of battery management systems is configured to; receive commands from the energy management system transmitted via its respective unique wireless frequency channel; and upon receiving a command from the energy management system transmitted via its respective unique wireless frequency channel, process and respond to the received command; receive a response to the first command from the first selected battery management system; after receiving the response from the first selected battery management system, determine a second wireless frequency channel from the plurality of wireless frequency channels in the wireless data channel, the determined second wireless frequency channel corresponding to the unique wireless frequency channel of a second selected battery management system; transmit a second command to the second selected battery management system using the determined second wireless frequency channel; set a communication interval time; identify a finishing time, the finishing time being a time of termination of communications between the energy management system and the first selected battery management system, wherein the communication interval time is initiated after the finishing time; and transmit the second command to the second selected battery management system upon completion of the communication interval. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for managing a plurality of battery modules, the method being implemented by an electric vehicle power management system comprising a plurality of battery management systems and an energy management system comprising an energy management processor and an energy management communication module, wherein the energy management system is operatively connected to each battery management system via a unique wireless channel, the method comprising:
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selecting, by the energy management system, a first wireless channel from a plurality of wireless channels, the selected first wireless channel corresponding to a unique wireless channel of a first selected battery management system; transmitting, by the energy management system, a first command to the first selected battery management system using the selected first wireless channel; receiving, at each of the plurality of battery management systems, the commands from the energy management system transmitted via its respective unique wireless frequency channel; and upon receiving a command from the energy management system transmitted via its respective unique wireless frequency channel, at each of the plurality of battery management systems, process and respond to the received command receiving, by the energy management system, a response to the first command from the first selected battery management system; after receiving the response from the first selected battery management system, determining, by the energy management system, a second wireless frequency channel from the plurality of wireless frequency channels in the wireless data channel, the determined second wireless frequency channel corresponding to the unique wireless frequency channel of a second selected battery management system; transmitting, by the energy management system, a second command to the second selected battery management system using the determined second wireless frequency channel; setting, by the energy management system, a communication interval time; identify, by the energy management system, a finishing time, the finishing time being a time of termination of communications between the energy management system and the first selected battery management system, wherein the communication interval time is initiated after the finishing time; and transmit, by the energy management system, the second command to the second selected battery management system upon completion of the communication interval. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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Specification