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, a battery management communication module, and a unique battery management system address, 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;
transmit a command to each of the plurality of battery management systems using a wireless frequency channel, the command carrying an address identifying a first selected battery management system;
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 the command from the energy management system via the wireless frequency channel;
compare the address in the command identifying the first selected battery management system to its unique battery management system address;
determine, based on the comparison whether it is the first selected battery management system; and
upon determining that it is the first selected battery management system, process and respond to the received command from the energy management system.
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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
18 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, a battery management communication module, and a unique battery management system address, 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; transmit a command to each of the plurality of battery management systems using a wireless frequency channel, the command carrying an address identifying a first selected battery management system; 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 the command from the energy management system via the wireless frequency channel; compare the address in the command identifying the first selected battery management system to its unique battery management system address; determine, based on the comparison whether it is the first selected battery management system; and upon determining that it is the first selected battery management system, process and respond to the received command from the energy management system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. 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 (11, 12, 13, 14, 15, 16, 17, 18)
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Specification