Electric vehicle and method for setting total allowable discharge electric energy in the electric vehicle
First Claim
1. An electric vehicle travelling by using power from a motor, said electric vehicle comprising:
- a battery device having;
a main secondary battery,a first auxiliary secondary battery anda second auxiliary secondary battery as a plurality of secondary batteries capable of exchanging electric power with said motor,a main connecting-releasing part that performs a connection of said main secondary battery to a side of said motor and release of said connection, anda second auxiliary connecting-releasing part that performs a connection of said second auxiliary secondary battery to a side of said motor and release of said connection;
a charger that is connected to an external power supply in a state of system shutdown, and charges said plurality of secondary batteries by using electric power from said external power supply;
a used secondary battery setting unit that sets a secondary battery in which an accumulated charge amount that is an electric energy that can be discharged reaches a preset accumulated charge amount or less out of said plurality of secondary batteries, as a used secondary battery;
a battery device control unit that;
controls said main connecting-releasing part so that said main secondary battery is connected to said side of said motor,controls a first auxiliary connecting-releasing part and said second auxiliary connecting-releasing part so that said first auxiliary secondary battery is connected to said side of said motor and said connection of said second auxiliary secondary battery and said side of said motor is released before said first auxiliary secondary battery is set as said used secondary battery, andcontrols said first auxiliary connecting-releasing part and said second auxiliary connecting-releasing part so that said connection of said first auxiliary secondary battery and said side of said motor is released and said second auxiliary secondary battery is connected said side of said motor after said first auxiliary secondary battery is set as said used secondary battery; and
a total allowable discharge electric energy setting unit that;
sets a total allowable discharge electric energy that is an electric energy that is allowed to be discharged in a whole of said battery device by using an allowable discharge electric energy that is said electric energy allowed to be discharged with respect to said main secondary battery, said allowable discharge electric energy with respect to said first auxiliary secondary battery, and said allowable discharge electric energy with respect to said second auxiliary secondary battery when said main secondary battery and said first auxiliary secondary battery are connected to said side of said motor, andsets said total allowable discharge electric energy by using said allowable discharge electric energy with respect to said main secondary battery and said allowable discharge electric energy with respect to said second auxiliary secondary battery without using said allowable discharge electric energy with respect to said first auxiliary secondary battery when said main secondary battery and said second auxiliary secondary battery are connected to said side of said motor.
1 Assignment
0 Petitions
Accused Products
Abstract
When an accumulated charge amount of a first slave battery reaches a preset accumulated charge amount or less, the first slave battery is set as a used secondary battery, and when a master battery and a second slave battery are connected to sides of motors, accumulated charge amount differences of the master battery and the second slave battery are respectively set as allowable discharge electric energies E1 and E3, value 0 is set as an allowable discharge electric energy E2, and a sum of these allowable discharge electric energies is set as an EV priority allowable electric energy that is an electric energy that is allowed to be discharged as a whole of the master battery, and the two slave batteries.
37 Citations
11 Claims
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1. An electric vehicle travelling by using power from a motor, said electric vehicle comprising:
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a battery device having; a main secondary battery, a first auxiliary secondary battery and a second auxiliary secondary battery as a plurality of secondary batteries capable of exchanging electric power with said motor, a main connecting-releasing part that performs a connection of said main secondary battery to a side of said motor and release of said connection, and a second auxiliary connecting-releasing part that performs a connection of said second auxiliary secondary battery to a side of said motor and release of said connection; a charger that is connected to an external power supply in a state of system shutdown, and charges said plurality of secondary batteries by using electric power from said external power supply; a used secondary battery setting unit that sets a secondary battery in which an accumulated charge amount that is an electric energy that can be discharged reaches a preset accumulated charge amount or less out of said plurality of secondary batteries, as a used secondary battery; a battery device control unit that; controls said main connecting-releasing part so that said main secondary battery is connected to said side of said motor, controls a first auxiliary connecting-releasing part and said second auxiliary connecting-releasing part so that said first auxiliary secondary battery is connected to said side of said motor and said connection of said second auxiliary secondary battery and said side of said motor is released before said first auxiliary secondary battery is set as said used secondary battery, and controls said first auxiliary connecting-releasing part and said second auxiliary connecting-releasing part so that said connection of said first auxiliary secondary battery and said side of said motor is released and said second auxiliary secondary battery is connected said side of said motor after said first auxiliary secondary battery is set as said used secondary battery; and a total allowable discharge electric energy setting unit that; sets a total allowable discharge electric energy that is an electric energy that is allowed to be discharged in a whole of said battery device by using an allowable discharge electric energy that is said electric energy allowed to be discharged with respect to said main secondary battery, said allowable discharge electric energy with respect to said first auxiliary secondary battery, and said allowable discharge electric energy with respect to said second auxiliary secondary battery when said main secondary battery and said first auxiliary secondary battery are connected to said side of said motor, and sets said total allowable discharge electric energy by using said allowable discharge electric energy with respect to said main secondary battery and said allowable discharge electric energy with respect to said second auxiliary secondary battery without using said allowable discharge electric energy with respect to said first auxiliary secondary battery when said main secondary battery and said second auxiliary secondary battery are connected to said side of said motor. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for setting a total allowable discharge electric energy in an electric vehicle for setting said total allowable discharge electric energy that is an electric energy allowed to be discharged in a whole of a battery device in the electric vehicle, said method comprising:
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(a) a motor that outputs power for travelling, the battery device having a main secondary battery, a first auxiliary secondary battery and a second auxiliary secondary battery as a plurality of secondary batteries capable of exchanging electric power with said motor, and a main connecting-releasing part that performs a connection of said main secondary battery to a side of said motor, and release of said connection, a first auxiliary connecting-releasing part that performs a connection of said first auxiliary secondary battery to a side of said motor and release of said connection, and a second auxiliary connecting-releasing part that performs a connection of said secondary auxiliary secondary battery to a side of said motor and release of said connection, and a charger that is connected to an external power supply and charges said plurality of secondary batteries by using electric power from the external power supply in a state of system shutdown; (b) setting the secondary battery with an accumulated charge amount that is an electric energy capable of being discharged reaching a preset accumulated charge amount or less out of said plurality of secondary batteries, as a used secondary battery; (c) controlling said main connecting-releasing part so that said main secondary battery is connected to said side of said motor; (d) controlling said first auxiliary connecting-releasing part and said second auxiliary connecting-releasing part so that said first auxiliary secondary battery is connected to said side of said motor, and said connection of said second auxiliary secondary battery and said side of said motor is released before said first auxiliary secondary battery is set as said used secondary battery; (e) controlling said first auxiliary connecting-releasing part and said second auxiliary connecting-releasing part so that the connection of said first auxiliary secondary battery and said side of said motor is released and said second auxiliary secondary battery is connected to said side of said motor after said first auxiliary secondary battery is set as said used secondary battery; (f) setting said total allowable discharge electric energy by using an allowable discharge electric energy that is an electric energy that is allowed to be discharged with respect to said main secondary battery, said allowable discharge electric energy with respect to said first auxiliary secondary battery, and said allowable discharge electric energy with respect to said second auxiliary secondary battery when said main secondary battery and said first auxiliary secondary battery are connected to said side of said motor; and (g) setting said total allowable discharge electric energy by using said allowable discharge electric energy with respect to said main secondary battery and said allowable discharge electric energy with respect to said second auxiliary secondary battery without using said allowable discharge electric energy with respect to said first auxiliary secondary battery when said main secondary battery and said second auxiliary secondary battery are connected to said side of said motor. - View Dependent Claims (8)
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9. An electric vehicle travelling by using power from a motor, said electric vehicle comprising:
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a battery device having; a main secondary battery, a first auxiliary secondary battery and a second auxiliary secondary battery as a plurality of secondary batteries capable of exchanging electric power with said motor, a main connecting-releasing part that performs a connection of said main secondary battery to a side of said motor and release of said connection, a first auxiliary connecting-releasing part that performs a connection of said first auxiliary secondary battery to a side of said motor and release of said connection, a second auxiliary connecting-releasing part that performs a connection of said second auxiliary secondary battery to a side of said motor and release of said connection, a main step-up/down circuit that exchanges electric power with regulation of a voltage between a main battery voltage system connected to said main secondary battery and a high voltage system at said side of said motor via said first auxiliary connecting-releasing part, and an auxiliary step-up/down circuit that exchanges electric power with regulation of a voltage between an auxiliary battery voltage system connected to said first auxiliary secondary battery and said second auxiliary secondary battery and said high voltage system at said side of said motor via said first auxiliary connecting-releasing part and said second auxiliary connecting-releasing part; a charger that is connected to an external power supply in a state of system shutdown, and charges said plurality of secondary batteries by using electric power from said external power supply; a used secondary battery setting unit that sets a secondary battery in which an accumulated charge amount that is an electric energy that can be discharged reaches a preset accumulated charge amount or less out of said plurality of secondary batteries, as a used secondary battery; a connection-release control unit that; controls said main connecting-releasing part so that said main secondary battery is connected to said side of said motor, controls said first auxiliary connecting-releasing part and said second auxiliary connecting-releasing part so that said first auxiliary secondary battery is connected to said side of said motor and the connection of said second auxiliary secondary battery and said side of said motor is released before said first auxiliary secondary battery is set as said used secondary battery, and controls said first auxiliary connecting-releasing part and said second auxiliary connecting- releasing part so that the connection of said first auxiliary secondary battery and said motor side is released and said second auxiliary secondary battery is connected to said side of said motor after said first auxiliary secondary battery is set as said used secondary battery; and a step-up/down circuit control unit that; sets a distribution ratio that is a ratio of said auxiliary side electric power to a sum of main side electric power that is electric power that is supplied to said side of said motor from said main battery voltage system and auxiliary side electric power that is electric power that is supplied to said side of said motor from said auxiliary battery voltage system by using an allowable discharge electric energy that is an electric energy that is allowed to be discharged with respect to said main secondary battery, said allowable discharge electric energy with respect to said first auxiliary secondary battery, and said allowable discharge electric energy with respect to said second auxiliary secondary battery when said main secondary battery and said first auxiliary secondary battery are connected to said side of said motor, sets said distribution ratio by using said allowable discharge electric energy with respect to said main secondary battery and said allowable discharge electric energy with respect to said second auxiliary secondary battery without using said allowable discharge electric energy with respect to said first auxiliary secondary battery when said main secondary battery and said second auxiliary secondary battery are connected said side of said motor, and controls said main step-up/down circuit and said auxiliary step-up/down circuit so that a voltage of said high voltage system becomes a target voltage and said auxiliary side electric power becomes electric power corresponding to said set distribution ratio. - View Dependent Claims (10, 11)
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Specification