Battery control method and system, smart battery, and movable platform
地域：
Shenzhen
摘要
A method for controlling a battery includes obtaining a present status parameter of the battery, and determining a discharge protection parameter according to the present status parameter for using in a discharge protection operation on the battery.
說明書
This application is a continuation application of International Application No. PCT/CN2016/084116, filed on May 31, 2016, the entire contents of which are incorporated herein by reference.
The present disclosure relates to the field of battery technology and, more particularly, to a battery control method, a battery control system based on the battery control method, a smart battery, and a movable platform.
權(quán)利要求
What is claimed is:1. A method for controlling a battery comprising:obtaining a present status parameter of the battery, the present status parameter including a discharge electrical current of the battery and a temperature of the battery; and determining a discharge protection parameter according to the present status parameter for using in a discharge protection operation on the battery, wherein the discharge protection parameter is configured to:remain constant in response to the discharge electrical current being greater than a preset electrical current threshold or the temperature of the battery being less than a preset temperature; change as the temperature of the battery changes in response to the discharge electrical current being less than the preset current threshold; and change as the discharge electrical current changes in response to the temperature of the battery being greater than the preset temperature. 2. The method according to claim 1 , wherein the present status parameter further includes one or more of: an internal resistance of the battery, a number of times of discharge of the battery, and a state of health of a battery core of the battery. 3. The method according to claim 1 , wherein the discharge protection parameter includes a discharge cut-off voltage. 4. The method according to claim 3 , wherein:the discharge protection parameter further includes a longest sustainable time duration for the battery being discharged at the discharge cut-off voltage, and the longest sustainable time duration is inversely proportional to the discharge cut-off voltage. 5. The method according to claim 1 ,wherein:the present status parameter is one of one or more present status parameters of the battery, and the discharge protection parameter is one of one or more discharge protection parameters each corresponding to one of the one or more present status parameters; and each of the one or more discharge protection parameters includes a discharge cut-off voltages; the method further comprising:obtaining one or more continuous discharge time durations in a discharge cycle of the battery, each of the one or more continuous discharge time durations being a time duration during which the battery is discharged at the discharge cut-off voltage of one of the one or more discharge protection parameters; accumulating the one or more continuous discharge time durations to obtain an accumulated discharge time duration; and determining whether to perform the discharge protection operation according to the accumulated discharge time duration. 6. The method according to claim 5 , wherein accumulating the one or more continuous discharge time durations includes:modifying the one or more continuous discharge time durations using one or more modification factors each corresponding to one of the one or more discharge cut-off voltages to obtain one or more modified continuous discharge time durations; and accumulating the one or more modified continuous discharge time durations to obtain the accumulated discharge time duration. 7. The method according to claim 6 , wherein:modifying the one or more continuous discharge time durations using the one or more modification factors includes, for each one continuous discharge time duration of the one or more continuous discharge time durations:calculating a common multiple of one or more longest sustainable time durations corresponding to the one or more discharge cut-off voltages and a quotient of the common multiple over the longest sustainable time duration corresponding to one of the one or more discharge cut-off voltages at which the battery is discharged during the one continuous discharge time duration; and weighting the one continuous discharge time duration using the quotient as a weight to obtain the modified continuous discharge time duration corresponding to the one continuous discharge time duration; and accumulating the one or more modified continuous discharge time durations includes obtaining a summation result of the modified continuous discharge time durations. 8. The method according to claim 7 , wherein determining whether to perform the discharge protection operation includes:comparing the summation result with the common multiple; and performing the discharge protection operation in response to the summation result being larger than the common multiple. 9. A system for controlling a battery, comprising a processor configured to:obtain one or more present status parameters of the battery; determine one or more discharge protection parameters according to the one or more present status parameters for using in a discharge protection operation on the battery, each discharge protection parameter corresponding to one of the one or more present status parameters, and each discharge protection parameter including a discharge cut-off voltage; obtain one or more continuous discharge time durations in a discharge cycle of the battery, each of the one or more continuous discharge time durations being a time duration during which the battery is discharged at the discharge cut-off voltage of one of the one or more discharge protection parameters; accumulate the one or more continuous discharge time durations to obtain an accumulated discharge time duration; and determine whether to perform the discharge protection operation according to the accumulated discharge time duration. 10. The system according to claim 9 , further comprising:a detection apparatus coupled to the processor and configured to detect the one or more present status parameters of the battery and transmit the one or more present status parameters to the processor. 11. The system according to claim 9 , wherein:each present status parameter includes at least one of a discharge electrical current of the battery, a temperature of the battery, an internal resistance of the battery, a number of times of discharges of the battery, or a state of health of a battery core of the battery. 12. The system according to claim 9 , wherein:each discharge protection parameter includes at least one of a discharge cut-off voltage or a longest sustainable time duration for the battery being discharged at the discharge cut-off voltage; and the longest sustainable time duration is inversely proportional to the discharge cut-off voltage. 13. The system according to claim 9 , wherein the processor is further configured to:modify the one or more continuous discharge time durations using one or more modification factors each corresponding to one of the one or more discharge cut-off voltages to obtain one or more modified continuous discharge time durations; and accumulate the one or more modified continuous discharge time durations to obtain the accumulated discharge time duration. 14. The system according to claim 13 , wherein the processor is further configured to:calculate a common multiple of one or more longest sustainable time durations corresponding to the one or more discharge cut-off voltages and a quotient of the common multiple over the longest sustainable time duration corresponding to one of the one or more discharge cut-off voltages at which the battery is discharged during the one continuous discharge time duration; and weight the one continuous discharge time duration using the quotient as a weight to obtain the modified continuous discharge time duration corresponding to the one continuous discharge time duration; obtain a summation result of the modified continuous discharge time durations; compare the summation result with the common multiple; and perform the discharge protection operation in response to the summation result being larger than the common multiple. 15. A smart battery comprising:a control circuit; and one or more energy storage units electrically coupled to the control circuit and configured to provide electricity through the control circuit; wherein the control circuit is configured to:determine a discharge protection parameter according to a present status parameter of the one or more energy storage units, wherein the present status parameter includes a discharge electrical current of the battery and a temperature of the battery, and the discharge protection parameter is configured to:remain constant in response to the discharge electrical current being greater than a preset electrical current threshold or the temperature of the battery being less than a preset temperature; change as the temperature of the battery changes in response to the discharge electrical current being less than the preset current threshold; and change as the discharge electrical current changes in response to the temperature of the battery being greater than the preset temperature; and perform a discharge protection operation on the one or more energy storage units according to the discharge protection parameter. 16. The smart battery according to claim 15 , wherein one of the one or more energy storage units includes a battery core.
意見反饋
使用該功能遇到問題