IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0376303
(2009-06-05)
|
등록번호 |
US-8442727
(2013-05-14)
|
국제출원번호 |
PCT/JP2009/060359
(2009-06-05)
|
§371/§102 date |
20120216
(20120216)
|
국제공개번호 |
WO2010/140253
(2010-12-09)
|
발명자
/ 주소 |
- Yamamoto, Masaya
- Tanaka, Yuichi
|
출원인 / 주소 |
- Toyota Jidosha Kabushiki Kaisha
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
8 인용 특허 :
1 |
초록
▼
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 t
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.
대표청구항
▼
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 wi
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; anda 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. 2. The electric vehicle according to claim 1, wherein said total allowable discharge electric energy setting unit that further: sets a difference between said accumulated charge amount and said preset accumulated charge amount of said main secondary battery as said allowable discharge electric energy with respect to said main secondary battery,sets a difference between said accumulated charge amount and said preset accumulated charge amount of said second auxiliary secondary battery as 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 difference between said accumulated discharge amount and said preset accumulated discharge amount of said main secondary battery as said allowable discharge electric energy with respect to said main secondary battery,sets said difference between said accumulated charged amount and said preset accumulated charge amount of said second auxiliary secondary battery as said allowable discharge electric energy with respect to said secondary auxiliary secondary battery,sets value 0 as 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, andsets a sum of respective allowable discharge electric energies of said plurality of secondary batteries as said total allowable discharge electric energy. 3. The electric vehicle according to claim 1, wherein said battery device is a device having: 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, andan 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, and said battery device control unit is a unit that:controls said main connecting-releasing part and said main step-up/down circuit so that said main secondary battery is connected to said side of said motor and electric power from said main secondary battery is supplied to said motor,controls said first auxiliary connecting-releasing part, said second auxiliary connecting-releasing part and said auxiliary step-up/down circuit so that said first auxiliary secondary battery is connected to said side of said motor, connection of said second auxiliary secondary battery and said side of said motor is released, and electric power from said first auxiliary secondary battery is supplied to said motor before said first auxiliary secondary battery is set as said used secondary battery, andcontrols said first auxiliary connecting-releasing part, said secondary auxiliary connecting-releasing part and said auxiliary step-up/down circuit so that said second auxiliary secondary battery is connected to said side of said motor, said connection of said first auxiliary secondary battery and said side of said motor is released, and electric power from said second auxiliary secondary battery is supplied to said motor after said first auxiliary secondary battery is set as said used secondary battery. 4. The electric vehicle according to claim 1, said electric vehicle further comprising an information reporting system that reports said set total allowable discharge electric energy and a travelable distance by said total allowable discharge electric energy that is obtained from said set total allowable discharge electric energy. 5. The electric vehicle according to claim 1, wherein said battery device control unit is a unit that 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 second auxiliary secondary battery to said side of said motor is released after said first auxiliary secondary battery and said second auxiliary secondary battery are set as used secondary batteries. 6. The electric vehicle according to claim 5, said electric vehicle further comprising: an internal combustion engine;a generator: capable of exchanging electric power with said secondary battery out of said plurality of secondary batteries that is connected to said side of said motor out of said plurality of secondary batteries, andcapable of inputting and outputting power;a planetary gear mechanism with three rotation elements connected to three shafts that are: an output shaft of said internal combustion engine,a rotating shaft of said generator, anda driveshaft linked to an axle; anda drive control system that: controls said internal combustion engine, said generator and said motor so that said electric vehicle travels with priority put on motor travel out of said motor travel for traveling by using only power that is input and output from said motor and hybrid travel for traveling by using power that is output from said internal combustion engine and said power that is input and output from said motor before said first auxiliary secondary battery and said second auxiliary secondary battery are set as said used secondary batteries, andcontrols said internal combustion engine, said generator and said motor so that said electric vehicle travels with priority put on said hybrid travel out of said motor travel and said hybrid travel after said first auxiliary secondary battery and said second auxiliary secondary battery are set as said used secondary batteries. 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: (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. 8. The method for setting said total allowable discharge electric energy in said electric vehicle according to claim 7, wherein said step (f) are further steps of: setting a difference between said accumulated charge amount of said main secondary battery and said preset accumulated charge amount as said allowable discharge electric energy with respect to said main secondary battery,setting a difference between said accumulated charge amount of said first auxiliary secondary battery and said preset accumulated charge amount as said allowable discharge electric energy with respect to said first auxiliary secondary battery,setting a difference between said accumulated charge amount of said second auxiliary secondary battery and said preset accumulated charge amount as 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;setting a difference between said accumulated charge amount of said main secondary battery and said preset accumulated charge amount as said allowable discharge electric energy with respect to said main secondary battery,setting a difference between said accumulated charge amount of said second auxiliary secondary battery and said preset accumulated charge amount as said allowable discharge electric energy with respect to said second auxiliary secondary battery,setting value 0 as 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; andsetting a sum of respective allowable discharge electric energies of said plurality of secondary batteries as said total allowable discharge electric energy. 9. 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,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, andan 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, andcontrols 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; anda 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, andcontrols 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. 10. The electric vehicle according to claim 9, wherein said connection-release control unit is a unit that 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 second auxiliary secondary battery to said side of said motor is released after said first auxiliary secondary battery and said second auxiliary secondary battery are set as used secondary batteries. 11. The electric vehicle according to claim 10, said electric vehicle further comprising: an internal combustion engine;a generator: capable of exchanging electric power with said secondary battery out of said plurality of secondary batteries that is connected to said side of said motor out of said plurality of secondary batteries, andcapable of inputting and outputting power;a planetary gear mechanism with three rotation elements connected to three shafts that are: an output shaft of said internal combustion engine,a rotating shaft of said generator, anda driveshaft linked to an axle; anda drive control system that: controls said internal combustion engine, said generator and said motor so that said electric vehicle travels with priority put on motor travel out of said motor travel for traveling by using only power that is input and output from said motor and hybrid travel for traveling by using power that is output from said internal combustion engine and said power that is input and output from said motor before said first auxiliary secondary battery and said second auxiliary secondary battery are set as said used secondary batteries, andcontrols said internal combustion engine, said generator and said motor so that said electric vehicle travels with priority put on said hybrid travel out of said motor travel and said hybrid travel after said first auxiliary secondary battery and said second auxiliary secondary battery are set as said used secondary batteries.
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