US 11,833,926 B2
Vehicle, vehicle control system, and vehicle control method that can perform power-based input restriction on a secondary battery included in a current restricting battery pack
Yoshiaki Kikuchi, Toyota (JP); Junichi Matsumoto, Toyota (JP); and Akio Uotani, Nagoya (JP)
Assigned to TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed by TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed on Dec. 7, 2020, as Appl. No. 17/113,486.
Claims priority of application No. 2019-229532 (JP), filed on Dec. 19, 2019.
Prior Publication US 2021/0188123 A1, Jun. 24, 2021
Int. Cl. B60L 58/18 (2019.01); B60L 58/12 (2019.01)
CPC B60L 58/18 (2019.02) [B60L 58/12 (2019.02); B60L 2240/547 (2013.01); B60L 2240/549 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A vehicle comprising:
a battery pack including a secondary battery, a battery sensor that detects a state of the secondary battery, and a first control device, wherein the battery pack is one of a current restricting battery pack and a power restricting battery pack;
a second control device provided separately from the battery pack;
a third control device provided separately from the battery pack and configured to relay communication between the first control device and the second control device; and
a converter mounted on the third control device, wherein:
the third control device is configured to be connectable to both the current restricting battery pack and the power restricting battery pack;
the first control device of the current restricting battery pack is configured to use a detection value of the battery sensor to obtain a current upper limit value indicating an upper limit value of an input current of the secondary battery;
the first control device of the power restricting battery pack is configured to use a detection value of the battery sensor to obtain a first power upper limit value indicating an upper limit value of an input power of the secondary battery;
the third control device is configured to acquire the detection value of the battery sensor including a measured value of a voltage of the secondary battery from the battery pack connected to the third control device;
the converter is configured to perform conversion of the current upper limit value into a second power upper limit value indicating an upper limit value of an input power of the secondary battery by performing multiplication of the measured value of the voltage of the secondary battery by the current upper limit value;
the third control device is configured to recognize that the battery pack is the current restricting battery;
in a case where the third control device recognizes that the battery pack is the current restricting battery pack, the third control device is configured to convert the current upper limit value input from the current restricting battery pack into the second power upper limit value by the converter and then output the second power upper limit value to the second control device;
in a case where the third control device does not recognize that the battery pack is the current restricting battery pack, the third control device configured to output, without performing the conversion by the converter, the first power upper limit value input from the current restricting battery pack to the second control device; and
the second control device is configured to use the first power upper limit value or the second power upper limit value input from the third control device to control the input power of the secondary battery.