A battery control method and device

Abstract

The application provides a battery control method and device, the method comprising: establishing a relationship between battery energy and cumulative polarization effect of the battery; determining a sustained discharge power of the battery according to the relationship between the battery energy and the cumulative polarization effect of the battery; monitoring a first battery state of a target battery in real time during a discharge process of the target battery; performing energy integration calculation according to the first battery state and the sustained discharge power to obtain a first energy integration result; determining a target allowable discharge power table according to the relationship between the battery energy and the cumulative polarization effect of the battery and the first energy integration result; and controlling the discharge power of the target battery according to the target allowable discharge power table. It can be seen that the method and device can determine the corresponding allowable power of the battery according to the actual discharge condition of the battery, solve the flexibility problem caused by switching the allowable power of the battery according to a fixed time length, and thus facilitate the improvement of the power performance of the vehicle.

Description

Technical Field

[0001] This application relates to the field of battery technology, and more specifically, to a battery control method and apparatus. Background Technology

[0002] Currently, as the market share of new energy vehicles gradually increases, consumers are placing higher demands on their performance, including battery performance. Existing battery control methods typically involve pre-setting a fixed duration, switching the battery's allowable power based on that duration, and then controlling the battery's power accordingly to prevent over-discharge and protect the battery. However, in practice, it has been found that in urban driving conditions, where most users experience short periods of minimum power MAP, the fixed-duration power switching method reduces vehicle performance. Summary of the Invention

[0003] The purpose of this application is to provide a battery control method and device that can determine the corresponding allowable battery power based on the actual battery discharge situation, solve the flexibility problem caused by relying on a fixed time to switch the allowable battery power, and thus help improve the vehicle's power performance.

[0004] The first aspect of this application provides a battery control method, including: Establish the relationship between battery energy and battery cumulative polarization effect; The continuous discharge power of the battery is determined based on the relationship between the battery energy and the cumulative polarization effect of the battery. During the discharge process of the target battery, the first battery state of the target battery is monitored in real time; Based on the first battery state and the continuous discharge power, energy integration is calculated to obtain the first energy integration result; Based on the relationship between battery energy and battery cumulative polarization effect and the first energy integral result, a target allowable discharge power table is determined. The discharge power of the target battery is controlled accordingly using the target allowable discharge power table.

[0005] In the above implementation process, this method can prioritize establishing the relationship between battery energy and the battery's cumulative polarization effect, thereby decoupling the switching rules of different discharge power MAPs from fixed time intervals. This enables flexible battery control, allowing the battery to maintain high power performance. Specifically, this method monitors the target battery and tracks the integral result of the battery output power in real time. This allows the control process to avoid identifying and adjusting instantaneous results, thus ensuring the reliability of battery control and improving its effectiveness.

[0006] Further, the step of calculating the energy integral based on the first battery state and the continuous discharge power to obtain the first energy integral result includes: Calculate the first actual discharge power based on the first battery state; The first energy integral result is obtained by performing energy integration calculation based on the continuous discharge power and the first actual discharge power.

[0007] Further, determining the target allowable discharge power table based on the relationship between the battery energy and the battery cumulative polarization effect and the first energy integral result includes: The first cutting table condition, the second cutting table condition, the third cutting table condition, the fourth cutting table condition, the first allowable discharge power table, the second allowable discharge power table, and the third allowable discharge power table are determined based on the relationship between the battery energy and the battery cumulative polarization effect. Determine whether the first energy integral result is greater than 0; If so, determine whether the first energy integral result satisfies the first slicing table condition; If so, the second allowable discharge power table is determined as the target allowable discharge power table.

[0008] Furthermore, the method also includes: When it is determined that the first energy integral result is not greater than 0, the first allowable discharge power table is determined as the target allowable discharge power table.

[0009] Furthermore, the method also includes: When it is determined that the first energy integral result does not meet the first table switching condition, the first allowable discharge power table is determined as the target allowable discharge power table.

[0010] Furthermore, after controlling the discharge power of the target battery accordingly using the target allowable discharge power meter, the method further includes: When the target allowable discharge power meter is the second allowable discharge power meter, continue to monitor the second battery status of the target battery; Based on the second battery state and the continuous discharge power, energy integration is calculated to obtain the second energy integration result; Determine whether the second energy integral result satisfies the second slicing table condition; If so, the discharge power of the target battery is controlled accordingly using the third permissible discharge power meter.

[0011] Furthermore, the method also includes: When it is determined that the second energy integral result does not meet the second switching table condition, the discharge power of the target battery is controlled accordingly using the second allowable discharge power table, and the second battery state of the target battery is monitored continuously.

[0012] Furthermore, after controlling the discharge power of the target battery using the third permissible discharge power meter, the method further includes: Continue monitoring the status of the third battery of the target battery; Based on the third battery state and the continuous discharge power, energy integration is calculated to obtain the third energy integration result; Determine whether the third energy integral result satisfies the third slicing table condition; If not, then the discharge power of the target battery is controlled accordingly using the third permissible discharge power table.

[0013] Furthermore, the method also includes: When it is determined that the third energy integral result satisfies the third cutting table condition, the discharge power of the target battery is controlled accordingly again using the second allowable discharge power table.

[0014] Furthermore, after re-adopting the second permissible discharge power meter to control the discharge power of the target battery accordingly, the method further includes: Continue monitoring the fourth battery status of the target battery; Based on the fourth battery state and the continuous discharge power, the energy integral is calculated to obtain the fourth energy integral result; Determine whether the fourth energy integral result satisfies the fourth slicing table condition; If not, then the discharge power of the target battery is controlled accordingly by reusing the second permissible discharge power table.

[0015] Furthermore, the method also includes: When it is determined that the fourth energy integral result satisfies the fourth cutting table condition, the discharge power of the target battery is controlled accordingly again using the first allowable discharge power table.

[0016] A second aspect of this application provides a battery control device, the battery control device comprising: A unit is established to establish the relationship between battery energy and battery cumulative polarization effect; The first determining unit is used to determine the continuous discharge power of the battery based on the relationship between the battery energy and the cumulative polarization effect of the battery. A monitoring unit is used to monitor the first battery state of the target battery in real time during the discharge process of the target battery; The calculation unit is used to perform energy integration calculation based on the first battery state and the continuous discharge power to obtain the first energy integration result; The second determining unit is used to determine the target allowable discharge power table based on the relationship between the battery energy and the battery cumulative polarization effect and the first energy integral result; The control unit is used to control the discharge power of the target battery accordingly using the target allowable discharge power meter.

[0017] In the above implementation process, the device can control the battery through multiple units, so that it can determine the corresponding allowable battery power according to the actual battery discharge situation, solve the flexibility problem caused by relying on a fixed time to switch the allowable battery power, and thus help improve the vehicle's power performance.

[0018] Furthermore, the calculation unit is specifically used to calculate the first actual discharge power based on the first battery state; The calculation unit is further configured to perform energy integration calculation based on the continuous discharge power and the first actual discharge power to obtain a first energy integration result.

[0019] Further, the second determining unit includes: The sub-unit is used to determine the first cutting table condition, the second cutting table condition, the third cutting table condition, the fourth cutting table condition, the first allowable discharge power table, the second allowable discharge power table, and the third allowable discharge power table based on the relationship between the battery energy and the battery cumulative polarization effect. The judgment subunit is used to determine whether the first energy integral result is greater than 0; The judgment subunit is further configured to determine whether the first energy integration result satisfies the first slicing table condition when the first energy integration result is greater than 0. The determining subunit is further configured to determine the second allowable discharge power table as the target allowable discharge power table when the first energy integration result satisfies the first slicing table condition.

[0020] Furthermore, the determining subunit is also used to determine the first allowable discharge power table as the target allowable discharge power table when the first energy integral result is not greater than 0.

[0021] Furthermore, the determining subunit is also used to determine the first allowable discharge power table as the target allowable discharge power table when the first energy integration result does not meet the first slicing table condition.

[0022] Furthermore, the battery control device also includes: The monitoring unit is also used to continue monitoring the second battery status of the target battery when the target allowable discharge power meter is the second allowable discharge power meter; The calculation unit is also used to perform energy integration calculation based on the second battery state and the continuous discharge power to obtain a second energy integration result; The judgment unit is used to determine whether the second energy integration result satisfies the second slicing table condition; The control unit is further configured to control the discharge power of the target battery accordingly using the third allowable discharge power table when the second energy integration result satisfies the second cutting table condition.

[0023] Furthermore, the control unit is also configured to, when the second energy integration result does not meet the second cutting table condition, use the second allowable discharge power table to control the discharge power of the target battery accordingly, and trigger the monitoring unit to continue monitoring the second battery state of the target battery.

[0024] Furthermore, the monitoring unit is also used to continue monitoring the third battery state of the target battery; The calculation unit is also used to perform energy integration calculation based on the third battery state and the continuous discharge power to obtain the third energy integration result; The judgment unit is also used to determine whether the third energy integral result satisfies the third slicing table condition; The control unit is further configured to control the discharge power of the target battery accordingly using the third allowable discharge power table when the third energy integral result does not meet the third cutting table condition.

[0025] Furthermore, the control unit is also configured to, when the third energy integral result satisfies the third cutting table condition, re-apply the second allowable discharge power table to control the discharge power of the target battery accordingly.

[0026] Furthermore, the monitoring unit is also used to continue monitoring the fourth battery state of the target battery; The calculation unit is also used to perform energy integration calculation based on the fourth battery state and the continuous discharge power to obtain the fourth energy integration result; The judgment unit is also used to determine whether the fourth energy integral result satisfies the fourth slicing table condition; The control unit is further configured to, when the fourth energy integral result does not meet the fourth cutting table condition, re-use the second allowable discharge power table to control the discharge power of the target battery accordingly.

[0027] Furthermore, the control unit is also configured to, when the fourth energy integral result satisfies the fourth cutting table condition, re-apply the first allowable discharge power table to control the discharge power of the target battery accordingly.

[0028] A third aspect of this application provides an electronic device including a memory and a processor, the memory storing a computer program and the processor running the computer program to cause the electronic device to perform the battery control method described in any one of the first aspects of this application.

[0029] The fourth aspect of this application provides a computer-readable storage medium storing computer program instructions, which, when read and executed by a processor, perform the battery control method described in any one of the first aspects of this application.

[0030] The beneficial effects of this application are: the method and device can determine the corresponding allowable battery power according to the actual battery discharge situation, solve the flexibility problem caused by relying on a fixed time to switch the allowable battery power, thereby helping to improve the vehicle's power performance. Attached Figure Description

[0031] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 A schematic flowchart of a battery control method provided in an embodiment of this application; Figure 2 A schematic flowchart illustrating another battery control method provided in an embodiment of this application; Figure 3 A schematic flowchart illustrating another battery control method provided in an embodiment of this application; Figure 4 A schematic flowchart of a battery power control method provided in an embodiment of this application; Figure 5 A schematic flowchart of another battery power control method provided in an embodiment of this application; Figure 6 This is a schematic diagram illustrating the dynamics of the current strategy provided in the embodiments of this application; Figure 7 A dynamic schematic diagram illustrating the application of this method in an embodiment of this application; Figure 8This is a schematic diagram of the structure of a battery control device provided in an embodiment of this application; Figure 9 This is a schematic diagram of another battery control device provided in an embodiment of this application. Detailed Implementation

[0033] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0034] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this application, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0035] Example 1 Please refer to Figure 1 , Figure 1 This is a schematic flowchart illustrating a battery control method provided in this embodiment. The battery control method includes: S101. Establish the relationship between battery energy and battery cumulative polarization effect.

[0036] In this embodiment, the method can pre-set the allowable discharge power MAP of the battery. This allowable discharge power MAP is the maximum discharge power boundary of the battery (i.e., the boundary at which the battery polarization effect occurs). In this method, the battery discharge power is always within this discharge power boundary. The switching rules for different discharge power MAPs are independent of a fixed time.

[0037] In this embodiment, the allowable discharge power MAP includes a first allowable discharge power table (e.g., a 10s discharge power MAP), a second allowable discharge power table (e.g., a 30s discharge power MAP), and a third allowable discharge power table (e.g., a continuous discharge power MAP). The continuous discharge power of the battery is the boundary at which the battery experiences polarization.

[0038] S102. Determine the continuous discharge power of the battery based on the relationship between battery energy and cumulative polarization effect.

[0039] S103. During the discharge process of the target battery, monitor the first battery state of the target battery in real time.

[0040] In this embodiment, the battery state includes at least the voltage state and the temperature state.

[0041] S104. Perform energy integration calculation based on the first battery state and continuous discharge power to obtain the first energy integration result.

[0042] S105. Based on the relationship between battery energy and battery cumulative polarization effect and the first energy integral result, determine the target allowable discharge power table.

[0043] S106. The discharge power of the target battery is controlled accordingly using a target allowable discharge power meter.

[0044] In this embodiment, this step is used to control the battery's output power. Specifically, the method can provide power feedback to the battery based on monitored information (or feedback information), thereby achieving further power control of the battery.

[0045] In this embodiment, the subject executing the method can be a computing device such as a computer or server, and no limitation is made in this embodiment.

[0046] In this embodiment, the subject executing the method can also be a smart device such as a smartphone or tablet, and no limitation is made in this embodiment.

[0047] As can be seen, by implementing the battery control method described in this embodiment, the battery discharge power MAP can be decoupled from the fixed duration, thereby allowing the battery discharge power MAP to be applied to the battery more flexibly, and thus enabling the battery to use the short-time power MAP for a longer period of time, further improving the vehicle's dynamic performance.

[0048] Example 2 Please refer to Figure 2 , Figure 2 This is a schematic flowchart illustrating a battery control method provided in this embodiment. The battery control method includes: S201. Establish the relationship between battery energy and battery cumulative polarization effect.

[0049] In this embodiment, the method can pre-set the allowable discharge power MAP of the battery. This allowable discharge power MAP is the boundary of the battery's maximum discharge power (i.e., the boundary at which the battery exhibits polarization). In this method, the battery discharge power is always within this discharge power boundary.

[0050] In this embodiment, the switching rules for different discharge power MAPs are independent of fixed time, thereby achieving the effect of decoupling.

[0051] In this embodiment, the cell manufacturer can provide the allowable discharge power for different durations of the battery based on the battery's actual discharge capacity. These allowable discharge power durations can include power capabilities for a 10-second discharge duration, power capabilities for a 30-second discharge duration, and power capabilities for continuous battery discharge.

[0052] In this embodiment, the power capability of a 10-second discharge duration is the battery discharge power MAP within 10 seconds, which represents the power MAP required to demonstrate the vehicle's power performance.

[0053] In this embodiment, the power capability of the 30s discharge duration is the battery's discharge power MAP within 30s. When the 10s power MAP time meets the requirement, the battery's allowable power MAP will switch to the 30s power MAP.

[0054] In this embodiment, the power capability of the continuous discharge duration is the battery continuous discharge power MAP. When the 30s power MAP time meets the requirement, the battery's allowable power MAP will switch to the continuous power MAP. The duration of the continuous power MAP can be 60s, 180s, or other times, which can be determined according to the needs of the vehicle manufacturer.

[0055] S202. Determine the continuous discharge power of the battery based on the relationship between battery energy and cumulative polarization effect.

[0056] In this embodiment, the continuous discharge power of the battery is the boundary at which the battery exhibits polarization effect.

[0057] S203. During the discharge process of the target battery, monitor the first battery state of the target battery in real time.

[0058] S204. Calculate the first actual discharge power based on the first battery state.

[0059] S205. Calculate the energy integral based on the continuous discharge power and the first actual discharge power to obtain the first energy integral result.

[0060] In this embodiment, the energy integral result Et is obtained by integrating (actual discharge power - continuous discharge power) during battery discharge, and its calculation formula is as follows: Et=∫(actual discharge power-continuous discharge power)dt.

[0061] Specifically, Et continuously integrates when "the actual power of the vehicle is less than the continuous discharge power" or "the actual power of the vehicle is negative (feedback power)".

[0062] In this embodiment, the calculation formula for the 10s energy threshold E10 in the switching power MAP threshold is as follows: E10 = (P10s - P duration) * 10s.

[0063] In this embodiment, the calculation formula for the 30s energy threshold E30 in the switching power MAP threshold is as follows: E30 = (P30s - P duration) * 30s.

[0064] S206. Determine the first cutting table condition, the second cutting table condition, the third cutting table condition, the fourth cutting table condition, the first allowable discharge power table, the second allowable discharge power table, and the third allowable discharge power table based on the relationship between battery energy and battery cumulative polarization effect.

[0065] In this embodiment, the first switching condition is: when the energy integration result reaches the 10s energy threshold E10, the first allowable discharge power meter is switched to the second allowable discharge power meter.

[0066] In this embodiment, the second switching condition is: when the energy integration result reaches the 30s energy threshold E30, the second allowable discharge power meter is switched to the third allowable discharge power meter.

[0067] In this embodiment, the third switching condition is: when the energy integration result reaches the 30s energy threshold E30, the third allowable discharge power meter is switched to the second allowable discharge power meter.

[0068] In this embodiment, the fourth switching condition is: when the energy integration result reaches the 10s energy threshold E10, the second allowable discharge power meter is switched to the first allowable discharge power meter.

[0069] In this embodiment, the first allowable discharge power meter can be a 10s power MAP; The second permissible discharge power table can be a 30s power MAP. The third permissible discharge power table can be the continuous power MAP.

[0070] In this embodiment, the discharge power meter can characterize the maximum discharge capacity of the battery at different discharge durations.

[0071] In this embodiment, Table 1 shows a partial table of the first permissible discharge power.

[0072] Table 1 First Permitted Discharge Power Table

[0073] In this embodiment, Table 2 shows a partial table of the first permissible discharge power.

[0074] Table 2 First Permissible Discharge Power Table

[0075] In this embodiment, Table 3 shows a partial table of the first permissible discharge power.

[0076] Table 3 First Permitted Discharge Power Table

[0077] S207. Determine whether the result of the first energy integral is greater than 0. If yes, proceed to step S209; otherwise, proceed to step S208.

[0078] S208. Determine the first allowable discharge power table as the target allowable discharge power table, and execute step S211.

[0079] S209. Determine whether the first energy integral result satisfies the first tangent table condition. If yes, proceed to step S210; otherwise, proceed to step S208.

[0080] S210. Determine the second allowable discharge power table as the target allowable discharge power table, and execute step S211.

[0081] S211. The discharge power of the target battery is controlled accordingly using a target allowable discharge power meter.

[0082] In this embodiment, the subject executing the method can be a computing device such as a computer or server, and no limitation is made in this embodiment.

[0083] In this embodiment, the subject executing the method can also be a smart device such as a smartphone or tablet, and no limitation is made in this embodiment.

[0084] As can be seen, by implementing the battery control method described in this embodiment, the battery discharge power MAP can be decoupled from the fixed duration, thereby allowing the battery discharge power MAP to be applied to the battery more flexibly, and thus enabling the battery to use the short-time power MAP for a longer period of time, further improving the vehicle's dynamic performance.

[0085] Example 3 Please refer to Figure 3 , Figure 3 This is a flowchart illustrating a battery control method provided in this embodiment. The battery control method is applied after the method provided in Embodiment 2 (i.e., step S212 can follow step S211), and the method includes: S212. When the target allowable discharge power meter is the second allowable discharge power meter, continue to monitor the second battery status of the target battery.

[0086] S213. Perform energy integration calculation based on the second battery state and continuous discharge power to obtain the second energy integration result.

[0087] S214. Determine whether the result of the second energy integral satisfies the second tangent table condition. If yes, proceed to step S216; otherwise, proceed to step S215.

[0088] S215. Use the second allowable discharge power meter to control the discharge power of the target battery accordingly, and execute step S212.

[0089] Please refer to Figure 4 , Figure 4 A schematic flowchart of a battery power control method is shown. This flowchart illustrates the process of switching from a 10s power MAP to a continuous power MAP.

[0090] S216. The discharge power of the target battery is controlled accordingly using a third permissible discharge power meter.

[0091] S217. Continue to monitor the status of the third battery of the target battery.

[0092] S218. Based on the third battery state and continuous discharge power, perform energy integration calculation to obtain the third energy integration result.

[0093] S219. Determine whether the result of the third energy integral satisfies the third tangent table condition. If yes, proceed to step S220; otherwise, proceed to step S216.

[0094] S220. The discharge power of the target battery is controlled again using the second permissible discharge power meter.

[0095] S221. Continue to monitor the status of the fourth battery of the target battery.

[0096] S222. Based on the fourth battery state and continuous discharge power, perform energy integration calculation to obtain the fourth energy integration result.

[0097] S223. Determine whether the result of the fourth energy integral satisfies the fourth tangent table condition. If yes, proceed to step S224; otherwise, proceed to step S220.

[0098] S224. Re-adopt the first allowable discharge power meter to control the discharge power of the target battery accordingly.

[0099] Please refer to Figure 5 , Figure 5 A flowchart illustrating another battery power control method is shown. This flowchart demonstrates the process of switching from a continuous power MAP to a 10s power MAP.

[0100] In this embodiment, compared with the current battery power MAP switching rules, this method can decouple the relationship between battery discharge power MAP and time, thereby fully releasing the battery power boundary capability according to the user's actual working conditions and increasing vehicle power performance.

[0101] Please refer to Figure 6 , Figure 6 A schematic diagram illustrating the current strategy dynamics is shown. Please refer to... Figure 7 , Figure 7 A dynamic diagram illustrating the application of this method is shown. For example, Figure 6 As shown, for extreme operating conditions, such as continuous full throttle, the current MAP switching strategy can avoid battery over-discharge and protect the battery. However, for smoother operating conditions, the time in the short-term power MAP is only 10 seconds, which leads to a reduction in vehicle power.

[0102] However, as Figure 7 As shown, the allowable power value P10 for 10 seconds is 260 kW, the allowable power value P30 for 30 seconds is 160 kW, and the allowable power value for continuous discharge P_continuous = 110 kW. The user's actual operating condition is a constant speed of 140 kW. Therefore, the energy threshold for the 10-second switching is E10 = (260 - 110) * 10 = 1500, and the vehicle's usage time of the 10-second power MAP is t = E10 / (actual power - continuous discharge power) = 50 seconds. However, according to the current MAP switching rule, the usage time of the 10-second power MAP is 10 seconds. The new control method extends the usage time of the 10-second power MAP by 40 seconds, thus extending the vehicle's high power performance time by 40 seconds.

[0103] In this embodiment, the subject executing the method can be a computing device such as a computer or server, and no limitation is made in this embodiment.

[0104] In this embodiment, the subject executing the method can also be a smart device such as a smartphone or tablet, and no limitation is made in this embodiment.

[0105] As can be seen, by implementing the battery control method described in this embodiment, the battery discharge power MAP can be decoupled from the fixed duration, thereby allowing the battery discharge power MAP to be applied to the battery more flexibly, and thus enabling the battery to use the short-time power MAP for a longer period of time, further improving the vehicle's dynamic performance.

[0106] Example 4 Please refer to Figure 8 , Figure 8 This is a schematic diagram of a battery control device provided in this embodiment. Figure 8 As shown, the battery control device includes: Establish unit 310 to establish the relationship between battery energy and battery cumulative polarization effect; The first determining unit 320 is used to determine the continuous discharge power of the battery based on the relationship between battery energy and battery cumulative polarization effect. The monitoring unit 330 is used to monitor the first battery state of the target battery in real time during the discharge process of the target battery. The calculation unit 340 is used to perform energy integration calculation based on the first battery state and continuous discharge power to obtain the first energy integration result; The second determining unit 350 is used to determine the target allowable discharge power table based on the relationship between battery energy and battery cumulative polarization effect and the first energy integral result; The control unit 360 is used to control the discharge power of the target battery accordingly using a target allowable discharge power meter.

[0107] In this embodiment, the explanation of the battery control device can be referred to the description in Embodiment 1, Embodiment 2 or Embodiment 3, and will not be repeated here.

[0108] As can be seen, by implementing the battery control device described in this embodiment, the battery discharge power MAP can be decoupled from the fixed duration, thereby allowing the battery discharge power MAP to be applied to the battery more flexibly, and thus enabling the battery to use the short-time power MAP for a longer period of time, further improving the vehicle's dynamic performance.

[0109] Example 5 Please refer to Figure 9 , Figure 9 This is a schematic diagram of a battery control device provided in this embodiment. Figure 9 As shown, the battery control device includes: Establish unit 310 to establish the relationship between battery energy and battery cumulative polarization effect; The first determining unit 320 is used to determine the continuous discharge power of the battery based on the relationship between battery energy and battery cumulative polarization effect. The monitoring unit 330 is used to monitor the first battery state of the target battery in real time during the discharge process of the target battery. The calculation unit 340 is used to perform energy integration calculation based on the first battery state and continuous discharge power to obtain the first energy integration result; The second determining unit 350 is used to determine the target allowable discharge power table based on the relationship between battery energy and battery cumulative polarization effect and the first energy integral result; The control unit 360 is used to control the discharge power of the target battery accordingly using a target allowable discharge power meter.

[0110] As an optional implementation, the calculation unit 340 is specifically used to calculate the first actual discharge power based on the first battery state. The calculation unit 340 is also specifically used to perform energy integration calculation based on the continuous discharge power and the first actual discharge power to obtain the first energy integration result.

[0111] As an optional implementation, the second determining unit 350 includes: Subunit 351 is used to determine the first cutting table condition, the second cutting table condition, the third cutting table condition, the fourth cutting table condition, the first allowable discharge power table, the second allowable discharge power table, and the third allowable discharge power table based on the relationship between battery energy and battery cumulative polarization effect. Judgment subunit 352 is used to determine whether the first energy integral result is greater than 0; The judgment subunit 352 is also used to determine whether the first energy integral result satisfies the first slicing table condition when the first energy integral result is greater than 0. The determination subunit 351 is also used to determine the second allowable discharge power table as the target allowable discharge power table when the first energy integration result satisfies the first slicing table condition.

[0112] As an optional implementation, the determining subunit 351 is further configured to determine the first allowable discharge power table as the target allowable discharge power table when the first energy integral result is not greater than 0.

[0113] As an optional implementation, the determining subunit 351 is further configured to determine the first allowable discharge power table as the target allowable discharge power table when the first energy integration result does not meet the first slicing table condition.

[0114] As an optional implementation, the battery control device further includes: The monitoring unit 330 is also used to continue monitoring the second battery status of the target battery when the target allowable discharge power meter is the second allowable discharge power meter; The calculation unit 340 is also used to perform energy integration calculation based on the second battery state and continuous discharge power to obtain the second energy integration result; The judgment unit 370 is used to determine whether the second energy integral result satisfies the second tangent table condition; The control unit 360 is also used to control the discharge power of the target battery accordingly using a third allowable discharge power table when the second energy integral result meets the second cutting table condition.

[0115] As an optional implementation, the control unit 360 is also used to control the discharge power of the target battery accordingly using the second allowable discharge power table when the second energy integration result does not meet the second cutting table conditions, and to trigger the monitoring unit 330 to continue monitoring the second battery state of the target battery.

[0116] As an optional implementation, the monitoring unit 330 is also used to continue monitoring the third battery status of the target battery; The calculation unit 340 is also used to perform energy integration calculation based on the third battery state and continuous discharge power to obtain the third energy integration result; The judgment unit 370 is also used to determine whether the third energy integral result satisfies the third tangent table condition; The control unit 360 is also used to control the discharge power of the target battery accordingly using a third allowable discharge power table when the third energy integral result does not meet the third cutting table conditions.

[0117] As an optional implementation, the control unit 360 is also used to re-control the discharge power of the target battery by using the second allowable discharge power table when the third energy integral result meets the third cutting table condition.

[0118] As an optional implementation, the monitoring unit 330 is also used to continue monitoring the fourth battery state of the target battery; The calculation unit 340 is also used to perform energy integration calculation based on the fourth battery state and continuous discharge power to obtain the fourth energy integration result; The judgment unit 370 is also used to determine whether the result of the fourth energy integral satisfies the conditions of the fourth tangent table; The control unit 360 is also used to re-control the discharge power of the target battery by using the second allowable discharge power table when the fourth energy integral result does not meet the fourth cutting table conditions.

[0119] As an optional implementation, the control unit 360 is also used to re-control the discharge power of the target battery by using the first allowable discharge power table when the fourth energy integral result meets the fourth cutting table condition.

[0120] In this embodiment, the explanation of the battery control device can be referred to the description in Embodiment 1, Embodiment 2 or Embodiment 3, and will not be repeated here.

[0121] As can be seen, by implementing the battery control device described in this embodiment, the battery discharge power MAP can be decoupled from the fixed duration, thereby allowing the battery discharge power MAP to be applied to the battery more flexibly, and thus enabling the battery to use the short-time power MAP for a longer period of time, further improving the vehicle's dynamic performance.

[0122] This application provides an electronic device, including a memory and a processor. The memory stores a computer program, and the processor runs the computer program to enable the electronic device to perform the battery control method in embodiment 1, embodiment 2, or embodiment 3 of this application.

[0123] This application provides a computer-readable storage medium storing computer program instructions, which are read and executed by a processor to perform the battery control method in embodiment 1, embodiment 2 or embodiment 3 of this application.

[0124] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can also be implemented in other ways. The apparatus embodiments described above are merely illustrative. For example, the flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods, and computer program products according to various embodiments of this application. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions marked in the blocks may occur in a different order than those marked in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in a block diagram and / or flowchart, and combinations of blocks in block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified function or action, or using a combination of dedicated hardware and computer instructions.

[0125] In addition, the functional modules in the various embodiments of this application can be integrated together to form an independent part, or each module can exist independently, or two or more modules can be integrated to form an independent part.

[0126] If the aforementioned functions are implemented as software functional modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0127] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application. It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0128] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

[0129] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A battery control method, characterized in that, include: Establish the relationship between battery energy and battery cumulative polarization effect; The continuous discharge power of the battery is determined based on the relationship between the battery energy and the cumulative polarization effect of the battery. During the discharge process of the target battery, the first battery state of the target battery is monitored in real time; Based on the first battery state and the continuous discharge power, energy integration is calculated to obtain the first energy integration result; Based on the relationship between battery energy and battery cumulative polarization effect, the first cutting table condition, the second cutting table condition, the third cutting table condition, the fourth cutting table condition, the first allowable discharge power table, the second allowable discharge power table, and the third allowable discharge power table are determined; wherein, these allowable discharge power tables are used to characterize the maximum discharge capacity of the battery at different discharge durations; Determine whether the first energy integral result is greater than 0; If so, determine whether the first energy integral result satisfies the first slicing table condition; If so, the second allowable discharge power table is determined as the target allowable discharge power table; The discharge power of the target battery is controlled accordingly using the target allowable discharge power table. The method further includes: When it is determined that the first energy integral result is not greater than 0, the first allowable discharge power table is determined as the target allowable discharge power table; The method further includes: When it is determined that the first energy integral result does not meet the first table switching condition, the first allowable discharge power table is determined as the target allowable discharge power table.

2. The battery control method according to claim 1, characterized in that, The step of calculating the energy integral based on the first battery state and the continuous discharge power to obtain the first energy integral result includes: Calculate the first actual discharge power based on the first battery state; The first energy integral result is obtained by performing energy integration calculation based on the continuous discharge power and the first actual discharge power.

3. The battery control method according to claim 1, characterized in that, After controlling the discharge power of the target battery accordingly using the target allowable discharge power meter, the method further includes: When the target allowable discharge power meter is the second allowable discharge power meter, continue to monitor the second battery status of the target battery; Based on the second battery state and the continuous discharge power, energy integration is calculated to obtain the second energy integration result; Determine whether the second energy integral result satisfies the second slicing table condition; If so, the discharge power of the target battery is controlled accordingly using the third permissible discharge power meter.

4. The battery control method according to claim 3, characterized in that, The method further includes: When it is determined that the second energy integral result does not meet the second switching table condition, the discharge power of the target battery is controlled accordingly using the second allowable discharge power table, and the second battery state of the target battery is monitored continuously.

5. The battery control method according to claim 3, characterized in that, After controlling the discharge power of the target battery using the third permissible discharge power meter, the method further includes: Continue monitoring the status of the third battery of the target battery; Based on the third battery state and the continuous discharge power, energy integration is calculated to obtain the third energy integration result; Determine whether the third energy integral result satisfies the third slicing table condition; If not, then the discharge power of the target battery is controlled accordingly using the third permissible discharge power table.

6. The battery control method according to claim 5, characterized in that, The method further includes: When it is determined that the third energy integral result satisfies the third cutting table condition, the discharge power of the target battery is controlled accordingly again using the second allowable discharge power table.

7. The battery control method according to claim 6, characterized in that, After re-adopting the second permissible discharge power meter to control the discharge power of the target battery accordingly, the method further includes: Continue monitoring the fourth battery status of the target battery; Based on the fourth battery state and the continuous discharge power, the energy integral is calculated to obtain the fourth energy integral result; Determine whether the fourth energy integral result satisfies the fourth slicing table condition; If not, then the discharge power of the target battery is controlled accordingly by reusing the second permissible discharge power table.

8. The battery control method according to claim 7, characterized in that, The method further includes: When it is determined that the fourth energy integral result satisfies the fourth cutting table condition, the discharge power of the target battery is controlled accordingly again using the first allowable discharge power table.

9. A battery control device, characterized in that, The battery control device includes: A unit is established to establish the relationship between battery energy and battery cumulative polarization effect; The first determining unit is used to determine the continuous discharge power of the battery based on the relationship between the battery energy and the cumulative polarization effect of the battery. A monitoring unit is used to monitor the first battery state of the target battery in real time during the discharge process of the target battery; The calculation unit is used to perform energy integration calculation based on the first battery state and the continuous discharge power to obtain the first energy integration result; The second determining unit is used to determine the target allowable discharge power table based on the relationship between the battery energy and the battery cumulative polarization effect and the first energy integral result; A control unit is used to control the discharge power of the target battery accordingly using the target allowable discharge power meter; The second determining unit includes: A sub-unit is defined to determine the first cutting table condition, the second cutting table condition, the third cutting table condition, the fourth cutting table condition, the first allowable discharge power table, the second allowable discharge power table, and the third allowable discharge power table based on the relationship between battery energy and battery cumulative polarization effect; wherein, these allowable discharge power tables are used to characterize the maximum discharge capacity of the battery at different discharge durations; The judgment sub-unit is used to determine whether the result of the first energy integral is greater than 0; The sub-unit is also used to determine whether the first energy integral result satisfies the first slicing table condition when the first energy integral result is greater than 0. The sub-unit is also used to determine the second allowable discharge power table as the target allowable discharge power table when the first energy integration result satisfies the first slicing table condition; The determination of the sub-unit is also used to determine the first allowable discharge power table as the target allowable discharge power table when the first energy integral result is not greater than 0. The determination sub-unit is also used to determine the first allowable discharge power table as the target allowable discharge power table when the first energy integration result does not meet the first slicing table condition.

10. An electronic device, characterized in that, The electronic device includes a memory and a processor, the memory storing a computer program and the processor running the computer program to cause the electronic device to perform the battery control method according to any one of claims 1 to 8.

11. A readable storage medium, characterized in that, The readable storage medium stores computer program instructions, which, when read and executed by a processor, perform the battery control method according to any one of claims 1 to 8.

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