Charge state calculation device and charge state calculation method
US-2015212161-A1 · Jul 30, 2015 · US
Vehicle charge control device
US2016355098A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016355098-A1 |
| Application number | US-201515118985-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jan 28, 2015 |
| Priority date | Feb 27, 2014 |
| Publication date | Dec 8, 2016 |
| Grant date | — |
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Abstract
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A vehicle charge control device includes a charge unit and a correction unit. The charge unit is configured to perform a charge operation for suppressing a deterioration in a battery by charging the battery until a charge end phase in which an acceptance current of the battery is smaller than a predetermined current value, the battery being mounted on a vehicle. The correction unit is configured to correct a charge rate of the battery based on a behavior of the acceptance current. In addition, the correction unit is configured to correct the charge rate based on the behavior in the charge end phase, in synchronization with the charge operation.
First claim
Opening claim text (preview).
1 . A vehicle charge control device comprising: a charge unit that is configured to perform a charge operation for suppressing a deterioration in a battery by charging the battery until a charge end phase in which an acceptance current of the battery is smaller than a predetermined current value, the battery being mounted on a vehicle; and a correction unit that is configured to correct a charge rate of the battery based on a behavior of the acceptance current, wherein the correction unit is configured to correct the charge rate based on the behavior in the charge end phase, in synchronization with the charge operation. 2 . The vehicle charge control device according to claim 1 , further comprising a determination unit that is configured to determine a degree of deterioration in the battery, wherein the charge unit is configured to perform the charge operation when the degree of deterioration reaches a threshold. 3 . The vehicle charge control device according to claim 2 , wherein the correction unit is configured to correct the charge rate based on a correction value, the correction value being calculated based on the behavior in the charge end phase in synchronization with the charge operation, and the charge unit does not perform the charge operation when the correction value is calculated before the degree of deterioration reaches the threshold. 4 . The vehicle charge control device according to claim 3 , wherein when the charge operation is not performed, the correction unit is configured to correct the charge rate based on a previous correction value that has been already calculated in synchronization with the charge operation. 5 . The vehicle charge control device according to claim 3 , wherein the correction value is calculated by the correction unit. 6 . The vehicle charge control device according to claim 1 , wherein the correction unit is configured to correct the charge rate based on the behavior, in synchronization with replacement of the battery. 7 . The vehicle charge control device according to claim 1 , wherein the correction unit is configured to correct the charge rate based on the behavior, in synchronization with initialization of correction of the charge rate. 8 . The vehicle charge control device according to claim 1 , wherein the correction unit is configured to correct, based on a correction value, the charge rate that is calculated according to a second method different from a first method of calculating the charge rate based on the behavior in the charge end phase in synchronization with the charge operation, the correction value being calculated based on the behavior in the charge end phase in synchronization with the charge operation. 9 . The vehicle charge control device according to claim 8 , wherein the correction value is determined in accordance with a difference between a first calculated value of the charge rate and a second calculated value of the charge rate, the first calculated value being calculated based on the behavior in the charge end phase in synchronization with the charge operation, and the second calculated value being calculated, based on a voltage of the battery, around a time when the first calculated value is calculated. 10 . The vehicle charge control device according to claim 8 , wherein the second method is a method of calculating the charge rate based on an integrated value of a charge amount of the battery and a discharge amount of the battery. 11 . The vehicle charge control device according to claim 10 , wherein the second method is a method of calculating the charge rate based on an off-voltage of the battery and the integrated value, the off-voltage is a voltage in a state where an ignition switch of the vehicle is off. 12 . The vehicle charge control device according to claim 8 , wherein the correction value is calculated by the correction unit. 13 . The vehicle charge control device according to claim 1 , wherein the correction unit is configured to limit a control in which the charge rate is used, when the charge rate is not corrected in synchronization with the charge operation. 14 . The vehicle charge control device according to claim 1 , wherein the correction unit is configured to correct the charge rate based on the behavior in the charge end phase, when the charge operation is completed. 15 . The vehicle charge control device according to claim 1 , further comprising a charge rate calculation unit that is configured to calculate the charge rate. 16 . The vehicle charge control device according to claim 1 , wherein the charge unit is configured to charge the battery to at least a predetermined charge rate over at least a predetermined charge time in the charge operation. 17 . The vehicle charge control device according to claim 1 , wherein the correction unit is configured to correct the charge rate by offsetting, by a predetermined amount, a charge rate that is obtained at a time when a predetermined time has elapsed after the acceptance current falls below the predetermined current value.
Assignees
Inventors
Classifications
in response to battery voltage · CPC title
in response to battery current · CPC title
Temperature · CPC title
Current · CPC title
Voltage · CPC title
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Frequently asked questions
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- What does patent US2016355098A1 cover?
- A vehicle charge control device includes a charge unit and a correction unit. The charge unit is configured to perform a charge operation for suppressing a deterioration in a battery by charging the battery until a charge end phase in which an acceptance current of the battery is smaller than a predetermined current value, the battery being mounted on a vehicle. The correction unit is configure…
- Who is the assignee on this patent?
- Toyota Motor Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification B60L11/1861. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Thu Dec 08 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).