Control system for a vehicle-mounted battery
First Claim
1. A control system for a vehicle-mounted battery, comprising:
- a polyphase alternating current rotating machine coupled to a driving gear of a vehicle,an inverter circuit provided between said polyphase alternating current rotating machine and a battery mounted on the vehicle,said inverter performing at least one of AC-to-DC and DC-to-AC conversion,a program control circuit for controlling said inverter circuit; and
means for measuring the current and voltage of said battery during discharge and during charging;
wherein said program control circuit comprises means for controlling, via said inverter and on the basis of the voltage and current information measured by said means, the current at least during one of the charging and discharging of the battery,wherein said battery is provided with battery sensors for detecting terminal voltage of unit cells;
the detection output of said battery sensors being supplied to the program control circuit;
the program control circuit comprising means for adjusting at least one of the charging and discharging current in accordance with the unit cell terminal voltage, andwherein the unit cells are each provided with an aforesaid battery sensor and with a transmitter for transmitting radio signals which has been modulated by the output of said battery sensor; and
a receiver for receiving said radio signals is disposed in or in the vicinity of the battery compartment which houses the unit cells; and
separate information relating to each unit cell is received at said receiver.
1 Assignment
0 Petitions
Accused Products
Abstract
The state of charging and discharging of a secondary cell circuit varies with battery deterioration and with the margin for charging and discharging. The state of charging and discharging is detected accurately without coming into contact with any unit cells, and maintenance and inspection can be performed efficiently. Charging and discharging characteristics of the battery are held in a memory, and charging current and discharging current are controlled by comparing measured voltage and current values with the charging and discharging characteristics held in the memory. Furthermore, battery information relating to each unit cell is transmitted by radio signals and the substance of this information is displayed at the driver'"'"'s seat.
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Citations
6 Claims
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1. A control system for a vehicle-mounted battery, comprising:
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a polyphase alternating current rotating machine coupled to a driving gear of a vehicle, an inverter circuit provided between said polyphase alternating current rotating machine and a battery mounted on the vehicle, said inverter performing at least one of AC-to-DC and DC-to-AC conversion, a program control circuit for controlling said inverter circuit; and means for measuring the current and voltage of said battery during discharge and during charging; wherein said program control circuit comprises means for controlling, via said inverter and on the basis of the voltage and current information measured by said means, the current at least during one of the charging and discharging of the battery, wherein said battery is provided with battery sensors for detecting terminal voltage of unit cells; the detection output of said battery sensors being supplied to the program control circuit;
the program control circuit comprising means for adjusting at least one of the charging and discharging current in accordance with the unit cell terminal voltage, andwherein the unit cells are each provided with an aforesaid battery sensor and with a transmitter for transmitting radio signals which has been modulated by the output of said battery sensor; and
a receiver for receiving said radio signals is disposed in or in the vicinity of the battery compartment which houses the unit cells; and
separate information relating to each unit cell is received at said receiver. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification