Battery Management System
First Claim
1. A battery management system for monitoring a plurality of interconnected batteries, the system comprising a plurality of modules arranged for connection to respective ones of the batteries, each module comprising:
- a negative terminal connector arranged for connection to a negative terminal of the respective battery;
a positive terminal connector arranged for connection to a positive terminal of the respective battery;
a voltage sensor arranged for measuring a voltage between the negative terminal connector and the positive terminal connector;
a communication port arranged to communicate the voltage sensed by the voltage sensor with the communication ports of other ones of the modules;
a resistive element arranged to be selectively connected between the negative terminal connector and the positive terminal connector; and
a controller arranged to connect the resistive element between the negative terminal connector and the positive terminal connector responsive to the voltage sensed by the voltage sensor being greater than voltages of other ones of the batteries which are sensed by the voltage sensors of the respective modules.
1 Assignment
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Accused Products
Abstract
A battery management system for monitoring a plurality of interconnected batteries comprises a plurality of interconnected modules arranged for connection to respective ones of the batteries. Each module comprises a negative terminal connector, a positive terminal connector, a voltage sensor for measuring voltage between the terminals, a communication port arranged to communicate the sensed voltage to other modules, and a controller arranged to selectively connect a resistive element between the negative terminal connector and the positive terminal connector of the respective battery responsive to the sensed voltage being greater than sensed voltages of other modules. A temperature sensor on each module measures a temperature through the terminal of the battery for communication to the system. A printed circuit board, arranged to be supported directly on one of the battery terminals, commonly supports the voltage sensor, the temperature sensor and the communication port thereon.
35 Citations
17 Claims
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1. A battery management system for monitoring a plurality of interconnected batteries, the system comprising a plurality of modules arranged for connection to respective ones of the batteries, each module comprising:
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a negative terminal connector arranged for connection to a negative terminal of the respective battery; a positive terminal connector arranged for connection to a positive terminal of the respective battery; a voltage sensor arranged for measuring a voltage between the negative terminal connector and the positive terminal connector; a communication port arranged to communicate the voltage sensed by the voltage sensor with the communication ports of other ones of the modules; a resistive element arranged to be selectively connected between the negative terminal connector and the positive terminal connector; and a controller arranged to connect the resistive element between the negative terminal connector and the positive terminal connector responsive to the voltage sensed by the voltage sensor being greater than voltages of other ones of the batteries which are sensed by the voltage sensors of the respective modules. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A module for monitoring a battery interconnected with other batteries in a battery management system, the module comprising:
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a negative terminal connector arranged for connection to a negative terminal of the battery; a positive terminal connector arranged for connection to a positive terminal of the battery; a voltage sensor arranged for measuring a voltage between the negative terminal connector and the positive terminal connector; a temperature sensor arranged for measuring a temperature of the battery; a communication port arranged to transmit the voltage measured by the voltage sensor and the temperature measured by the temperature sensor to the battery management system; the temperature sensor being connected to one of the terminal connectors so as to be arranged to measure a temperature of the battery through the respective terminal of the battery.
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16. A module for monitoring a battery interconnected with other batteries in a battery management system, the module comprising:
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a negative terminal connector arranged for connection to a negative terminal of the battery; a positive terminal connector arranged for connection to a positive terminal of the battery; a voltage sensor arranged for measuring a voltage between the negative terminal connector and the positive terminal connector; a temperature sensor arranged for measuring a temperature of the battery; a communication port arranged to transmit the voltage measured by the voltage sensor and the temperature measured by the temperature sensor to the battery management system; and a printed circuit board commonly supporting the voltage sensor, the temperature sensor and the communication port thereon; the printed circuit board being arranged to be supported directly on one of the terminals of the battery. - View Dependent Claims (17)
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Specification