Battery temperature control system
First Claim
1. A battery temperature control system that carries out temperature rise control to raise temperature of a battery mounted in a vehicle by internal heating due to charging and/or discharging of the battery, the battery temperature control system comprising:
- current detecting means for detecting a current of the battery;
voltage detecting means for detecting a voltage of the battery;
temperature detecting means for detecting a temperature of the battery;
maximum chargeable/dischargeable current setting means for setting a maximum chargeable current and a maximum dischargeable current based on the detected current, voltage, and temperature of the battery; and
temperature rise controlling means for controlling charging/discharging power so that the current of the battery does not exceed the maximum chargeable current or the maximum dischargeable current thereby to raise the temperature of the battery;
whereinthe temperature rise controlling means compares the maximum chargeable current and the maximum dischargeable current with each other, selects the current larger in absolute value, and controls the charging/discharging power thereby to attain the selected current.
1 Assignment
0 Petitions
Accused Products
Abstract
A battery temperature control system, in temperature rise control, sets a maximum chargeable current and a maximum dischargeable current based on detection values of current, voltage, and temperature of a high-voltage battery, and controls charging/discharging power so that the current of the high-voltage battery does not exceed the maximum chargeable current or the maximum dischargeable current. For this reason, it is possible to prevent the high-voltage battery from abnormal heating and promptly raise its temperature according to change in the internal state of the high-voltage battery. In this control, a plurality of electrical equipment is selectively used. The amplitude of charging/discharging is controlled to reduce vibration noise and driving force fluctuation.
-
Citations
7 Claims
-
1. A battery temperature control system that carries out temperature rise control to raise temperature of a battery mounted in a vehicle by internal heating due to charging and/or discharging of the battery, the battery temperature control system comprising:
-
current detecting means for detecting a current of the battery; voltage detecting means for detecting a voltage of the battery; temperature detecting means for detecting a temperature of the battery; maximum chargeable/dischargeable current setting means for setting a maximum chargeable current and a maximum dischargeable current based on the detected current, voltage, and temperature of the battery; and temperature rise controlling means for controlling charging/discharging power so that the current of the battery does not exceed the maximum chargeable current or the maximum dischargeable current thereby to raise the temperature of the battery;
whereinthe temperature rise controlling means compares the maximum chargeable current and the maximum dischargeable current with each other, selects the current larger in absolute value, and controls the charging/discharging power thereby to attain the selected current. - View Dependent Claims (2, 3, 4, 5)
-
-
6. A battery temperature control system that carries out temperature rise control to raise temperature of a battery mounted in a vehicle by internal heating due to the charging/discharging of the battery, the battery temperature control system comprising:
-
current detecting means for detecting a current of the battery; voltage detecting means for detecting a voltage of the battery; temperature detecting means for detecting a temperature of the battery; maximum chargeable/dischargeable current setting means for setting a maximum chargeable current and a maximum dischargeable current based on the detected current, voltage, and temperature of the battery; temperature rise controlling means for controlling charging/discharging power so that the current of the battery does not exceed the maximum chargeable current or the maximum dischargeable current thereby to raise the temperature of the battery; use range setting means for setting a current use range and a voltage use range of the battery, wherein the temperature rise controlling means limits the charging/discharging power so that the current and the voltage of the battery fall within the current use range and the voltage use range set by the use range setting means, respectively; wherein the maximum chargeable/dischargeable current setting means calculates an allowable voltage rise and an allowable voltage drop based on differences of the detected voltage from an upper limit voltage and a lower limit voltage of the voltage use range, respectively, and sets the maximum chargeable current and the maximum dischargeable current based on the allowable voltage rise, the allowable voltage drop, the temperature of the battery as well as an upper limit current and a lower limit current of the current use range.
-
-
7. A battery temperature control system that carries out temperature rise control to raise temperature of a battery mounted in a vehicle by internal heating due to charging and/or discharging of the battery, the battery temperature control system comprising:
-
current detecting means for detecting a current of the battery; voltage detecting means for detecting a voltage of the battery; temperature detecting means for detecting a temperature of the battery; maximum chargeable/dischargeable current setting means for setting a maximum chargeable current and a maximum dischargeable current based on the detected current, voltage, and temperature of the battery; temperature rise controlling means for controlling charging/discharging power so that the current of the battery does not exceed the maximum chargeable current or the maximum dischargeable current thereby to raise the temperature of the battery; driving intention detecting means for detecting a driver'"'"'s driving intention; and means for prohibiting the temperature rise control by the temperature rise controlling means based on the driver'"'"'s driving intention detected by the driving intention detecting means, wherein the driver'"'"'s driving intention includes required acceleration or deceleration while the temperature rise controlling means continues to carry out the temperature rise control; the prohibiting means prohibits the temperature rise control when the detected required acceleration or deceleration exceeds a predetermined level; and the driver'"'"'s intention detecting means detects the required acceleration or deceleration in excess of the predetermined level after the temperature detecting means detects the temperature of the battery and before the maximum chargeable/dischargeable current setting means sets the maximum chargeable current and the maximum dischargeable current.
-
Specification