Power management in electric vehicles
First Claim
1. An electric vehicle power management system used for managing a plurality of battery modules, the electric vehicle power management system comprising:
- a plurality of battery modules;
a plurality of battery management systems, each said battery management system comprising a battery management processor and a battery management communication module configured to communicate via a unique wireless frequency channel, wherein each of the plurality of battery management systems is connected to a corresponding battery module and is configured to manage one or more battery cells of its corresponding battery module;
an energy management system comprising an energy management processor and an energy management communication module, wherein the energy management system is configured to;
determine a first wireless frequency channel from a plurality of wireless frequency channels in a wireless data channel, the determined first wireless frequency channel corresponding to the unique wireless frequency channel of a first selected battery management system; and
transmit a first command to the first selected battery management system using the determined first wireless frequency channel;
wherein each of the plurality of battery management systems is further configured to use its respective battery management processor and battery management communication module 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.
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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
9 Claims
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1. An electric vehicle power management system used for managing a plurality of battery modules, the electric vehicle power management system comprising:
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a plurality of battery modules; a plurality of battery management systems, each said battery management system comprising a battery management processor and a battery management communication module configured to communicate via a unique wireless frequency channel, wherein each of the plurality of battery management systems is connected to a corresponding battery module and is configured to manage one or more battery cells of its corresponding battery module; an energy management system comprising an energy management processor and an energy management communication module, wherein the energy management system is configured to; determine a first wireless frequency channel from a plurality of wireless frequency channels in a wireless data channel, the determined first wireless frequency channel corresponding to the unique wireless frequency channel of a first selected battery management system; and transmit a first command to the first selected battery management system using the determined first wireless frequency channel; wherein each of the plurality of battery management systems is further configured to use its respective battery management processor and battery management communication module 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification