Control device of battery charging

• US 9,590,439 B2
• Filed: 10/22/2012
• Issued: 03/07/2017
• Est. Priority Date: 10/22/2012
• Status: Active Grant

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Hasegawa, Hajime, Omori, Keisuke, Kato, Kazuhito
• Primary Examiner(s): Berhanu, Samuel
• Application Number:
  US14/432,367
• Publication Number:
  US 20150255998A1
• Time in Patent Office: 1,597 Days
• Field of Search: 320/132
• US Class Current: 1/1
• CPC Class Codes: B60L 2240/545 Temperature
• CPC Class Codes: B60L 58/16 responding to battery ageing, e.g. to the number of charging cycles or the state of health [SoH]
• CPC Class Codes: B60L 58/27 by heating
• CPC Class Codes: G01R 31/374 with means for correcting the measurement for temperature or ageing
• CPC Class Codes: G01R 31/392 Determining battery ageing or deterioration, e.g. state of health
• CPC Class Codes: H01M 10/443 in response to temperature
• CPC Class Codes: H01M 10/486 for measuring temperature
• CPC Class Codes: H02J 2310/48 for electric vehicles [EV] or hybrid vehicles [HEV]
• CPC Class Codes: H02J 7/007194 of the battery
• CPC Class Codes: H02J 7/04 Regulation of charging current or voltage
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries

Abstract

A main object of the present invention is to provide a control device of battery charging capable of quickly charging a battery to an intended capacity while inhibiting occurrence of defect in the battery, the control device including a first output unit outputting a heating signal to heat a battery, a second output unit outputting a charging signal to charge the battery heated according to the heating signal, and a controller judging whether or not a degree of degradation of the battery is a first value or more, wherein where the controller judges the degree of degradation to be the first value or more, the controller controls the heating signal to make the charging rate of the battery whose degree of degradation is the first value or more equal to or closer to a charging rate of the battery when the degree of degradation is less than the first value.

Claims

1. A control device of battery charging comprising:

a first output unit outputting a heating signal to heat a battery;

a second output unit outputting a charging signal to charge the battery heated according to the heating signal; and

a controller judging whether or not a degree of degradation X of the battery is a first value X1 or more,

wherein when the controller judges the degree of degradation X to be the first value X1 or more, the controller controls the heating signal so as to raise a temperature of the battery, so as to make the charging rate of the battery whose degree of degradation X is no less than the first value X1 equal to or closer to a charging rate of the battery when the degree of degradation is less than the first value X1;

when the controller judges the degree of degradation X to be equal to or greater than a second value X2 which is greater than the first value X1, the controller controls the heating signal or the charging signal or a combination thereof so as to make the charging rate of the battery slower than a charging rate of the battery when the degree of degradation X is no less than the first value X1 and less than the second value X2;

when the controller judges the degree of degradation X to be equal to or greater than a third value X3 which is greater than the second value X2, the controller controls the heating signal and the charging signal, so as to make the charging rate of the battery slower than a charging rate of the battery when the degree of degradation X is no less than the second value X2 and less than the third value X3, and so as to charge the battery with the temperature of the battery decreased;

wherein the controller controls the heating signal and the charging signal, so as to charge the battery satisfying X<

X1 with a battery temperature T1 and a charging current I1, charge the battery satisfying X1≦

X<

X2 with a battery temperature T2, charge the battery satisfying X2≦

X<

X3 with the charging temperature T2 and a charging current I2, and charge the battery satisfying X3≦

X with a battery temperature T3 and a charging current I3;

the charging current I1, I2, and I3 satisfy I3<

I2<

I1; and

the battery temperature T1, T2, and T3 satisfy T3≦

T1<

T2.

2. A control device of battery charging comprising:

a first output unit outputting a heating signal to heat a battery equipped on a vehicle;

a second output unit outputting a charging signal to charge the battery heated according to the heating signal; and

a controller judging whether or not a degree of degradation X of the battery is a first value X1 or more and being equipped on the vehicle,

wherein when the controller judges the degree of degradation X to be the first value X1 or more, the controller controls the heating signal so as to raise a temperature of the battery, so as to make the charging rate of the battery whose degree of degradation X is no less than the first value X1 equal to or closer to a charging rate of the battery when the degree of degradation is less than the first value X1;

when the controller judges the degree of degradation X to be equal to or greater than a second value X2 which is greater than the first value X1, the controller controls the heating signal or the charging signal or a combination thereof so as to make the charging rate of the battery slower than a charging rate of the battery when the degree of degradation X is no less than the first value X1 and less than the second value X2;

when the controller judges the degree of degradation X to be equal to or greater than a third value X3 which is greater than the second value X2, the controller controls the heating signal and the charging signal, so as to make the charging rate of the battery slower than a charging rate of the battery when the degree of degradation X is no less than the second value X2 and less than the third value X3, and so as to charge the battery with the temperature of the battery decreased;

wherein the controller controls the heating signal and the charging signal, so as to charge the battery satisfying X<

X1 with a battery temperature T1 and a charging current I1, charge the battery satisfying X1≦

X<

X2 with a battery temperature T2, charge the battery satisfying X2≦

X<

X3 with the charging temperature T2 and a charging current I2, and charge the battery satisfying X3≦

X with a battery temperature T3 and a charging current I3;

the charging current I1, I2, and I3 satisfy I3<

I2<

I1; and

the battery temperature T1, T2, and T3 satisfy T3≦

T1<

T2.

3. A control device of battery charging comprising:

a first output unit outputting a heating signal to heat a battery equipped on a vehicle;

a second output unit outputting a charging signal to charge the battery heated according to the heating signal; and

a controller judging whether or not a degree of degradation X of the battery is a first value X1 or more and being equipped on a feeding device feeding electricity into the battery, the feeding device being arranged outside the vehicle,

wherein when the controller judges the degree of degradation X to be the first value X1 or more, the controller controls the heating signal so as to raise a temperature of the battery, so as to make the charging rate of the battery whose degree of degradation X is no less than the first value X1 equal to or closer to a charging rate of the battery when the degree of degradation is less than the first value X1;

when the controller judges the degree of degradation X to be equal to or greater than a second value X2 which is greater than the first value X1, the controller controls the heating signal or the charging signal or a combination thereof so as to make the charging rate of the battery slower than a charging rate of the battery when the degree of degradation X is no less than the first value X1 and less than the second value X2;

when the controller judges the degree of degradation X to be equal to or greater than a third value X3 which is greater than the second value X2, the controller controls the heating signal and the charging signal, so as to make the charging rate of the battery slower than a charging rate of the battery when the degree of degradation X is no less than the second value X2 and less than the third value X3, and so as to charge the battery with the temperature of the battery decreased;

wherein the controller controls the heating signal and the charging signal, so as to charge the battery satisfying X<

X1 with a battery temperature T1 and a charging current I1, charge the battery satisfying X1≦

X<

X2 with a battery temperature T2, charge the battery satisfying X2≦

X<

X3 with the charging temperature T2 and a charging current I2, and charge the battery satisfying X3≦

X with a battery temperature T3 and a charging current I3;

the charging current I1, I2, and I3 satisfy I3<

I2<

I1; and

the battery temperature T1, T2, and T3 satisfy T3≦

T1<

T2.