Charging and discharging control method, device, equipment, storage medium and system

Abstract

The invention discloses a charging and discharging control method, device and system, equipment and a storage medium. The method comprises the steps of obtaining a battery state of a target battery; under the condition that the battery state meets a preset charging condition, controlling the output voltage of a target power supply to be greater than the voltage of the target battery, and charging the target battery by using the output voltage; and under the condition that the target battery meets the preset discharge condition, controlling the output voltage of the target power supply to be smaller than the voltage of the target battery so as to control the target battery to discharge. According to the scheme provided by the embodiment of the invention, the cycle life of the battery can be prolonged.

Description

Technical Field

[0001] The present application relates to the field of battery management technology, and in particular to a charge and discharge control method, device, equipment, storage medium and system. Background Art

[0002] With the rise and development of new energy technologies, more and more devices need to install and use batteries, and the cycle life of batteries has become one of the key issues of concern.

[0003] At present, during the operation of the equipment, after the battery is charged to a high level, it will remain in a high level state for a long time, which can easily cause the battery cell to produce gas, thereby shortening the battery's cycle life. Summary of the invention

[0004] The present application provides a charge and discharge control method, device, equipment, storage medium and system, which can extend the cycle life of a battery.

[0005] In a first aspect, the present application provides a charge and discharge control method, the method comprising: obtaining a battery status of a target battery; when the battery status meets a preset charging condition, controlling an output voltage of a target power supply to be greater than a voltage of the target battery, and charging the target battery using the output voltage; when the target battery meets a preset discharging condition, controlling an output voltage of the target power supply to be less than a voltage of the target battery, so as to control the discharge of the target battery.

[0006] In this way, by adjusting the output voltage of the target power supply, when the target battery needs to be charged, the output voltage of the target power supply is adjusted to be greater than the voltage of the target battery, thereby charging the target battery. After the target battery meets the preset discharge condition, the output voltage of the target power supply is adjusted to be less than the voltage of the target battery, so that the target battery is discharged. In this way, the target battery will not be in a high power state for a long time after being charged to a high power level, thereby extending the service life of the battery.

[0007] In some embodiments, after controlling the output voltage of the target power source to be lower than the voltage of the target battery so as to discharge the target battery, the method further includes: returning to executing the step of obtaining the battery status of the target battery.

[0008] In this way, by making the target battery continuously in the charge and discharge cycle process, the target battery will not be in a high power state for a long time, which can further extend the cycle life of the battery.

[0009] In some embodiments, controlling the output voltage of the target power supply to be greater than the voltage of the target battery includes: controlling the target power supply to increase the output voltage; detecting the charging current of the target power supply to charge the target battery; and dynamically adjusting the output voltage of the target power supply according to the charging current.

[0010] In this way, by dynamically adjusting the output voltage of the target power supply according to the charging current used by the target power supply to charge the target battery while controlling the target power supply to increase the output voltage, the output voltage can be adjusted to a suitable value at any time, thereby improving charging safety and charging efficiency.

[0011] In some embodiments, dynamically adjusting the output voltage of the target power supply according to the charging current includes: when the charging current is greater than a first current threshold, controlling the target power supply to reduce the output voltage; when the charging current is equal to the first current threshold, controlling the output voltage of the target power supply to remain unchanged; when the charging current is less than the first current threshold, returning to execute the control of the target power supply to increase the output voltage.

[0012] In this way, by timely reducing the output voltage when the charging current is too large, the charging safety can be improved, and by timely increasing the output voltage when the charging current is too small, the charging efficiency can be improved.

[0013] In some embodiments, the charge and discharge control method further includes: when the target battery does not meet a preset discharge condition, returning to execute the control of the target power supply to increase the output voltage.

[0014] In this way, when the target battery does not meet the preset discharge condition, the output voltage of the target power supply is continuously increased, and the output voltage of the target power supply is gradually made to reach a suitable voltage value, thereby further improving the charging safety.

[0015] In some embodiments, the preset discharge condition includes at least one of a voltage of the target battery being greater than a preset voltage threshold and a remaining power of the target battery being greater than a preset power threshold.

[0016] In this way, by timely controlling the discharge of the target battery when the voltage of the target battery is greater than the preset voltage threshold or the remaining power is greater than the preset power threshold, the target battery will not be in a high power state for a long time after being charged to a high power level, thereby extending the battery life.

[0017] In some embodiments, controlling the output voltage of the target power supply to be lower than the voltage of the target battery includes: controlling the target power supply to reduce the output voltage; detecting the discharge current of the target battery; and dynamically adjusting the output voltage of the target power supply according to the discharge current.

[0018] In this way, by dynamically adjusting the output voltage of the target power supply according to the discharge current of the target battery while controlling the target power supply to reduce the output voltage, the output voltage can be adjusted to a suitable value at any time, thereby improving the battery discharge safety while increasing the battery discharge power.

[0019] In some embodiments, dynamically adjusting the output voltage of the target power supply according to the discharge current includes: when the discharge current is greater than or equal to a second current threshold, controlling the target power supply to increase the output voltage; and when the discharge current is less than the second current threshold, returning to execute the control of the target power supply to reduce the output voltage.

[0020] In this way, by increasing the output voltage in time when the discharge current is too large, the discharge current can be reduced accordingly, thereby improving the discharge safety of the battery. In addition, by reducing the output voltage in time when the charging current is too small, the discharge current can be increased accordingly, thereby improving the discharge power of the battery.

[0021] In some embodiments, the charge and discharge control method further includes: when the battery state does not meet the preset charging condition, returning to execute the control of the target power supply to reduce the output voltage.

[0022] In this way, when the battery state does not require charging, the output voltage of the target power source is continuously reduced, and the output voltage of the target power source is gradually made to reach a suitable voltage value, thereby further improving the battery discharge safety.

[0023] In some embodiments, controlling the target battery to discharge includes: controlling the target battery and the target power source to jointly supply power to a load.

[0024] In this way, by supplying power to the load together with the target power supply during the discharge process of the target battery, the output power of the target power supply can be reduced compared to the method in the related art where only the target power supply supplies power to the load, thereby reducing the power requirement for the target power supply.

[0025] In some embodiments, the target power supply includes: a direct current converter connected to a high voltage power supply.

[0026] In a second aspect, the present application provides a charge and discharge control device, which includes: a state acquisition module, used to acquire the battery state of a target battery; a charging control module, used to control the output voltage of a target power supply to be greater than the voltage of the target battery when the battery state meets a preset charging condition, and use the output voltage to charge the target battery; a discharging control module, used to control the output voltage of the target power supply to be less than the voltage of the target battery when the target battery meets a preset discharging condition, so as to control the discharge of the target battery.

[0027] In a third aspect, the present application provides an electronic device, comprising: a processor and a memory storing computer program instructions; when the processor executes the computer program instructions, the steps of the charge and discharge control method described in any one of the embodiments of the first aspect are implemented.

[0028] In a fourth aspect, the present application provides a computer-readable storage medium having computer program instructions stored thereon. When the computer program instructions are executed by a processor, the steps of the charge and discharge control method as described in any one of the embodiments of the first aspect are implemented.

[0029] In a fifth aspect, the present application provides a battery management system, the system comprising: a target battery, a target power supply, and a charge and discharge control device as described in any one of the embodiments of the second aspect, wherein the target power supply is electrically connected to a load; the target battery is connected in parallel with the target power supply; and the charge and discharge control device is communicatively connected to the target battery and the target power supply, respectively.

[0030] In some embodiments, the target power supply includes a DC converter connected to a high voltage power supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solution of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0032] Figure 1 is a structural diagram of a battery management system provided by an embodiment of the present application;

[0033] Figure 2 is an exemplary structural diagram of a battery management system provided by the present application;

[0034] Figure 3 It is a flow chart of a charge and discharge control method provided by an embodiment of the present application;

[0035] Figure 4is an exemplary flow chart of the charge and discharge control method provided in the present application;

[0036] Figure 5 is a structural schematic diagram of a charge and discharge control device provided by an embodiment of the present application;

[0037] Figure 6 It is a structural schematic diagram of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0039] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0040] At present, batteries are usually installed in electrical equipment, such as new energy vehicles, which can temporarily power the electrical equipment after the electrical equipment is disconnected from the power supply. When the electrical equipment is working normally, since the output voltage corresponding to the power supply for charging the battery is fixed, the battery will maintain the charging voltage unchanged after being charged to a high power level, which will cause the battery to be in a high power state for a long time when the electrical equipment is working, which can easily cause the battery cell to produce gas and shorten the battery cycle life.

[0041] In order to solve the above technical problems, the embodiments of the present application provide a charge and discharge control method, device, equipment, storage medium and system.

[0042] The battery management system provided in the embodiments of the present application is introduced below.

[0043] Figure 1FIG. 1 is a schematic diagram of the structure of a battery management system provided by an embodiment of the present application. Figure 1 As shown, the battery management system 10 may include: a target battery 11, a target power source 12 and a charge and discharge control device 13. The target power source 12 is electrically connected to the load 20, the target battery 11 is connected in parallel with the target power source 12, and the charge and discharge control device 13 is respectively connected to the target battery 11 and the target power source 12 for communication.

[0044] Here, the target battery 11 may be a storage battery in an electrical device, for example, a 12V lithium battery in a vehicle. The target power source 12 may be a power source used by the electrical device in a working state, for example, a DCDC converter (Direct Current, DC converter) connected to a high-voltage battery pack used after the vehicle is powered on. Based on this, Figure 2 As shown, in some embodiments, the target power source 12 may include a DC converter connected to a high-voltage power source 30 , which may be, for example, a high-voltage battery pack in a vehicle.

[0045] In addition, the charge and discharge control device 13 can be used to control the charge and discharge state of the target battery 11. The charge and discharge control device 13 can be connected to the target battery 11 and the target power supply 12 respectively, and can be specifically used to execute the charge and discharge control method described in any embodiment of the present application, for example: obtaining the battery state of the target battery 11; when the battery state meets the preset charging condition, controlling the output voltage of the target power supply 12 to be greater than the voltage of the target battery 11, and using the output voltage to charge the target battery 11; when the target battery 11 meets the preset discharge condition, controlling the output voltage of the target power supply 12 to be less than the voltage of the target battery 11 to control the discharge of the target battery 11. In addition, the charge and discharge control device 13 can also be used to execute the charge and discharge control methods provided in other embodiments of the present application.

[0046] It should be noted that the electrical connection and communication connection described in the embodiments of the present application can be a direct connection or an indirect connection, that is, by connecting to other modules and then connecting to the corresponding load, target battery or target power supply.

[0047] In this way, by connecting the target battery in parallel with the target power supply, and adjusting the output voltage of the target power supply by the charge and discharge control device, when the target battery needs to be charged, the output voltage of the target power supply is adjusted to be greater than the voltage of the target battery, and then the target power supply supplies power to the load and the target battery, and after the target battery meets the preset discharge condition, the output voltage of the target power supply is adjusted to be less than the voltage of the target battery, and then the target power supply and the target battery jointly supply power to the load. In this way, the target battery will not be in a high power state for a long time after being charged to a high power level, thereby extending the service life of the battery. In addition, when the target battery is in a discharge state, a part of the power supply power can be shared with the target power supply, thereby reducing the power requirement for the target power supply.

[0048] Based on the above battery management system, the following describes the charge and discharge control method provided in the embodiment of the present application. The charge and discharge control method can be applied to the application scenario of controlling the charge and discharge of the battery, and the charge and discharge control method can be executed by the charge and discharge control device 13 in the above battery management system 10.

[0049] Figure 3 FIG. 1 is a schematic diagram of the structure of a battery management system provided by an embodiment of the present application. Figure 3 As shown, the charge and discharge control method may specifically include the following steps:

[0050] S310, obtaining the battery status of the target battery;

[0051] S320, when the battery state meets the preset charging condition, controlling the output voltage of the target power supply to be greater than the voltage of the target battery, and using the output voltage to charge the target battery;

[0052] S330: When the target battery meets a preset discharge condition, control the output voltage of the target power supply to be lower than the voltage of the target battery, so as to control the target battery to discharge.

[0053] Therefore, by adjusting the output voltage of the target power supply, when the target battery needs to be charged, the output voltage of the target power supply is adjusted to be greater than the voltage of the target battery, thereby charging the target battery. After the target battery meets the preset discharge condition, the output voltage of the target power supply is adjusted to be less than the voltage of the target battery, so that the target battery is discharged. In this way, the target battery will not be in a high power state for a long time after being charged to a high power level, thereby extending the service life of the battery.

[0054] The specific implementation methods of the above steps are introduced below.

[0055] In some implementations, in S310 , the battery status may be used to indicate the current state of the battery, and may include, for example, at least one of voltage and SOC (State of Charge, remaining power).

[0056] Exemplarily, the method of obtaining the battery status may include directly detecting the voltage of a 12V lithium battery, or obtaining the voltage of a target battery from other battery voltage detection modules. For another example, the method of obtaining the battery status may include directly detecting the SOC of a 12V lithium battery, or obtaining the SOC of a target battery from other battery SOC detection modules.

[0057] In some embodiments, in S320, the preset charging condition may include that the battery voltage is less than a preset voltage threshold, or the SOC is less than a preset power threshold. For a 12V lithium battery, the preset voltage threshold may be set to 12.8V, for example, and the SOC may be set to 60%, for example.

[0058] For example, when the voltage of the target battery is less than a preset voltage threshold or the SOC is less than a preset power threshold, the target battery may be controlled to enter a charging mode by adjusting the output voltage of the target power source.

[0059] In addition, the target power source may be a power source used by the power-consuming device in a working state, for example, a DCDC converter connected to a high-voltage battery pack used after the vehicle is powered on. Based on this, in some embodiments, the target power source may include a DC converter connected to a high-voltage power source, which may be, for example, a high-voltage battery pack in a vehicle.

[0060] In some examples of the present application, when the voltage of a 12V lithium battery is less than 12.8V or the SOC is less than 60%, if the DC converter is in operation, that is, the high voltage power supply is turned on and the DC converter is enabled, the output voltage of the target power supply can be adjusted so that the output voltage of the target power supply is greater than the voltage of the target battery, and the target battery is charged using the output voltage. The method of adjusting the output voltage of the target power supply may include directly increasing the output voltage of the target power supply to a voltage greater than the voltage of the target battery, and may also include gradually increasing the output voltage of the target power supply to a voltage greater than the voltage of the target battery, and dynamically adjusting the output voltage of the target power supply.

[0061] Based on this, the step of controlling the output voltage of the target power source to be greater than the voltage of the target battery in the above S320 may specifically include:

[0062] Control the target power supply to increase the output voltage;

[0063] Detecting the charging current of the target battery charged by the target power source;

[0064] The output voltage of the target power supply is dynamically adjusted according to the charging current.

[0065] Here, the method of controlling the target power source to increase the output voltage may include increasing the output voltage of the target power source to be greater than the voltage of the target battery, or may include increasing the output voltage of the target power source according to a preset step size.

[0066] In addition, the basic principle of dynamically adjusting the output voltage of the target power supply according to the charging current may include making the charging current corresponding to the adjusted output voltage within a preset current range, which may be a safe charging current range corresponding to the target battery.

[0067] In this way, by dynamically adjusting the output voltage of the target power supply according to the charging current used by the target power supply to charge the target battery while controlling the target power supply to increase the output voltage, the output voltage can be adjusted to a suitable value at any time, thereby improving charging safety and charging efficiency.

[0068] In some embodiments of the present application, the step of dynamically adjusting the output voltage of the target power supply according to the charging current may specifically include:

[0069] When the charging current is greater than a first current threshold, controlling the target power supply to reduce the output voltage;

[0070] When the charging current is equal to the first current threshold, controlling the output voltage of the target power supply to remain unchanged;

[0071] When the charging current is less than the first current threshold, the control is returned to increase the output voltage of the target power supply.

[0072] Here, the first current threshold may be a maximum safe charging current threshold allowed by the target battery.

[0073] Exemplarily, when the charging current for charging the target battery is greater than the first current threshold, the target power supply can be controlled to reduce the output voltage according to a preset step size to reduce the charging current for charging the target battery and improve charging safety. When the charging current for charging the target battery is equal to the first current threshold, the output voltage of the target power supply can be kept unchanged, and the target battery can be charged according to the output voltage. When the charging current for charging the target battery is less than the first current threshold, the target power supply can be returned to increase the output voltage to appropriately increase the charging current for charging the target battery and improve the charging efficiency.

[0074] In this way, by timely reducing the output voltage when the charging current is too large, the charging safety can be improved, and by timely increasing the output voltage when the charging current is too small, the charging efficiency can be improved.

[0075] In addition, in some embodiments of the present application, the charge and discharge control method may further include:

[0076] When the target battery does not meet the preset discharge condition, the control of the target power supply is returned to increase the output voltage.

[0077] For example, after adjusting the output voltage of the target power supply, it is possible to detect whether the target battery meets the preset discharge condition, that is, whether it is already in a high power state. If it is determined that the target battery does not meet the preset discharge condition, it is possible to return to executing the control of the target power supply to increase the output voltage, that is, continue to increase the output voltage of the target power supply, so that the output voltage of the target power supply is in a dynamic change process. The situation where the target battery does not meet the preset discharge condition may be, for example, that the SOC of the target battery is less than 100%.

[0078] In this way, when the target battery does not meet the preset discharge condition, the output voltage of the target power supply is continuously increased, and the output voltage of the target power supply is gradually made to reach a suitable voltage value, thereby further improving the charging safety.

[0079] In some embodiments, in S330, during the process of charging the target battery, it can be detected whether the target battery has met the preset discharge condition, and when the target battery meets the preset discharge condition, the output voltage of the target power supply is reduced to be lower than the voltage of the target battery. In this way, the target battery can be controlled to enter the discharge mode by adjusting the output voltage of the target power supply.

[0080] Based on this, in some embodiments, the above-mentioned preset discharge condition may include at least one of the voltage of the target battery being greater than a preset voltage threshold and the remaining power of the target battery being greater than a preset power threshold. The preset voltage threshold may be set according to the rated voltage of the target battery. For example, for a 12V battery, the preset voltage threshold may be set to 13V, 13.5V or 14V. In addition, the preset power threshold may be, for example, 100%, and of course, may also be other higher remaining power values, such as 98%, 97%, etc.

[0081] In this way, by timely controlling the discharge of the target battery when the voltage of the target battery is greater than the preset voltage threshold or the remaining power is greater than the preset power threshold, the target battery will not be in a high power state for a long time after being charged to a high power level, thereby extending the battery life.

[0082] In some examples, when the SOC of a 12V lithium battery reaches 100%, a full charge flag can be set to enter a discharge mode. In the discharge mode, the output voltage of the target power supply can be adjusted so that the output voltage of the target power supply is less than the voltage of the target battery, thereby putting the target battery in a discharge state. The method of adjusting the output voltage of the target power supply can include directly reducing the output voltage of the target power supply to less than the voltage of the target battery, and can also include gradually reducing the output voltage of the target power supply to less than the voltage of the target battery, and dynamically adjusting the output voltage of the target power supply according to the change of the target battery voltage during the discharge process of the target battery.

[0083] Based on this, in some embodiments of the present application, the step of controlling the output voltage of the target power source to be lower than the voltage of the target battery in the above S330 may specifically include:

[0084] Controlling the target power supply to reduce the output voltage;

[0085] Detect the discharge current of the target battery;

[0086] The output voltage of the target power supply is dynamically adjusted according to the discharge current.

[0087] Here, the method of controlling the target power source to reduce the output voltage may include reducing the output voltage of the target power source to be less than the voltage of the target battery, or may include reducing the output voltage of the target power source according to a preset step size.

[0088] In addition, the basic principle of dynamically adjusting the output voltage of the target power supply according to the discharge current may include making the discharge current of the target battery corresponding to the adjusted output voltage within a preset current range, which may be a safe discharge current range corresponding to the target battery.

[0089] In this way, by dynamically adjusting the output voltage of the target power supply according to the discharge current of the target battery while controlling the target power supply to reduce the output voltage, the output voltage can be adjusted to a suitable value at any time, thereby improving and stabilizing the discharge power of the target battery while improving the discharge safety of the target battery.

[0090] In some embodiments of the present application, the step of dynamically adjusting the output voltage of the target power supply according to the discharge current may specifically include:

[0091] When the discharge current is greater than or equal to the second current threshold, controlling the target power supply to increase the output voltage;

[0092] When the discharge current is less than the second current threshold, the control is returned to the target power supply to reduce the output voltage.

[0093] Here, the second current threshold may be a maximum safe discharge current threshold allowed by the target battery.

[0094] For example, when the discharge current of the target battery is greater than or equal to the second current threshold, the target power supply can be controlled to increase the output voltage according to the preset step size to reduce the discharge current of the target battery and improve charging safety. When the discharge current of the target battery is less than the second current threshold, the target power supply can be controlled to reduce the output voltage to appropriately increase the discharge current of the target battery and improve the battery discharge power.

[0095] In this way, by increasing the output voltage in time when the discharge current is too large, the discharge current can be reduced accordingly, thereby improving the discharge safety of the battery. In addition, by reducing the output voltage in time when the charging current is too small, the discharge current can be increased accordingly, thereby improving the discharge power of the battery.

[0096] In addition, in some embodiments of the present application, the charge and discharge control method may further include:

[0097] When the battery state does not satisfy the preset charging condition, the control returns to executing to reduce the output voltage of the target power supply.

[0098] Exemplarily, after adjusting the output voltage of the target power supply, it is possible to detect whether the target battery needs to be charged, that is, whether the preset charging conditions have been met. If it is determined that the target battery does not need to be charged, the control of the target power supply to reduce the output voltage can be returned, that is, the output voltage of the target power supply can be continued to be reduced to continue to increase the discharge current of the target battery.

[0099] In this way, when the battery state does not require charging, the output voltage of the target power source is continuously reduced, and the output voltage of the target power source is gradually made to reach a suitable voltage value, thereby further improving the battery discharge safety.

[0100] In addition, in some embodiments of the present application, after the above S330, the charge and discharge control method may further include: returning to execute obtaining the battery status of the target battery.

[0101] For example, during the discharge process of the target battery, the battery status of the target battery can be obtained, and it can be determined whether the target battery meets the preset charging conditions, that is, whether the target battery needs to be charged, so that the target battery can continue to be in the charge and discharge cycle process.

[0102] Therefore, by making the target battery continuously in the charge and discharge cycle process, the target battery will not be in a high power state for a long time, which can further extend the cycle life of the battery.

[0103] In addition, based on Figure 1 and Figure 2The structure of the battery management system shown in the figure, in some embodiments of the present application, the step of controlling the target battery to discharge in the above S330 may specifically include:

[0104] The target battery and the target power supply are controlled to supply power to the load together.

[0105] In this way, by supplying power to the load together with the target power supply during the discharge process of the target battery, the output power of the target power supply can be reduced compared to the method in the related art where only the target power supply supplies power to the load, thereby reducing the power requirement for the target power supply.

[0106] In order to better describe the entire solution, some specific examples are given based on the above embodiments.

[0107] For example, Figure 4 The flow chart of the charge and discharge control method is shown in FIG. The charge and discharge control method may include steps S401 to S413, which are explained in detail below.

[0108] S401 : Obtain the voltage or SOC of the target battery.

[0109] In some specific examples, the target battery may be a 12V battery.

[0110] S402: Is the voltage of the target battery lower than 12.8V, or is the SOC less than 60%? If yes, execute S403; otherwise, return to execute S401.

[0111] S403: Whether the DC converter is in working state, if so, execute S404, if not, return to execute S401.

[0112] S404: The target battery enters a charging mode.

[0113] S405, controlling the output voltage of the DC converter to increase.

[0114] S406: Whether the charging current for charging the target battery is greater than or equal to the first current threshold, if so, execute S407, if not, return to execute S405.

[0115] In some specific examples, the first current threshold may be a maximum safe charging current threshold allowed by the target battery.

[0116] S407, controlling the output voltage of the DC converter to remain unchanged or decrease.

[0117] S408: Is the target battery fully charged? If so, execute S409; if not, return to execute S405.

[0118] S409: The target battery enters a discharge mode and supplies power to the load together with the DC converter.

[0119] S410, controlling the output voltage of the DC converter to decrease.

[0120] S411: Is the discharge current of the target battery greater than or equal to the second current threshold? If so, execute S412; otherwise, return to execute S410.

[0121] In some specific examples, the second current threshold may be a maximum safe discharge current threshold allowed by the target battery.

[0122] S412, controlling the output voltage of the DC converter to increase.

[0123] S413: Whether the voltage of the target battery is lower than 12.8V, or whether the SOC is less than 60%, if so, execute S403, otherwise return to execute S410.

[0124] Thus, by adjusting the output voltage of the DC converter, when the target battery needs to be charged, the output voltage of the DC converter is adjusted to be greater than the voltage of the target battery, thereby charging the target battery, and after the target battery is fully charged, the output voltage of the DC converter is adjusted to be less than the voltage of the target battery, so that the target battery is discharged, and the target battery is continuously in the charge and discharge cycle process, so that the target battery will not be in a high power state for a long time, thereby extending the cycle life of the battery. In addition, by supplying power to the load together with the DC converter during the discharge process of the target battery, compared with the method in the related art where only the DC converter supplies power to the load, the output power of the DC converter can be reduced, thereby reducing the power requirement for the DC converter.

[0125] It should be noted that the application scenarios described in the above-mentioned embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided in the embodiments of the present application. Ordinary technicians in this field can know that with the emergence of new application scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0126] Based on the same inventive concept, the present application also provides a charge and discharge control device. Figure 5 Provide detailed explanation.

[0127] Figure 5 It is a schematic diagram of the structure of a charge and discharge control device provided in one embodiment of the present application.

[0128] like Figure 5 As shown, the charge and discharge control device 500 may include:

[0129] A status acquisition module 501 is used to acquire the battery status of a target battery;

[0130] A charging control module 502, configured to control the output voltage of a target power source to be greater than the voltage of a target battery when the battery state satisfies a preset charging condition, and to charge the target battery using the output voltage;

[0131] The discharge control module 503 is used to control the output voltage of the target power supply to be lower than the voltage of the target battery so as to control the discharge of the target battery when the target battery meets a preset discharge condition.

[0132] The above-mentioned charge and discharge control device 500 is described in detail below, as shown below:

[0133] In some embodiments, the charge and discharge control device 500 may further include:

[0134] The first returning module is used to return to the step of obtaining the battery status of the target battery after controlling the output voltage of the target power supply to be lower than the voltage of the target battery so that the target battery is discharged.

[0135] In some embodiments, the charging control module 502 may specifically include:

[0136] A first control submodule, used for controlling the target power supply to increase the output voltage;

[0137] A first detection submodule, used to detect a charging current of the target battery charged by the target power source;

[0138] The first regulating submodule is used to dynamically regulate the output voltage of the target power supply according to the charging current.

[0139] In some embodiments, the first regulating submodule may specifically include:

[0140] A first control unit, configured to control the target power supply to reduce an output voltage when the charging current is greater than a first current threshold;

[0141] a second control unit, configured to control the output voltage of the target power supply to remain unchanged when the charging current is equal to the first current threshold;

[0142] The first returning unit is configured to return to executing the step of controlling the target power supply to increase the output voltage when the charging current is less than the first current threshold.

[0143] In some embodiments, the charge and discharge control device 500 may further include:

[0144] The second returning module is used for returning to executing the step of controlling the target power supply to increase the output voltage when the target battery does not meet the preset discharge condition.

[0145] In some embodiments, the preset discharge condition includes at least one of a voltage of the target battery being greater than a preset voltage threshold and a remaining power of the target battery being greater than a preset power threshold.

[0146] In some embodiments, the discharge control module 503 may specifically include:

[0147] A second control submodule, used for controlling the target power supply to reduce the output voltage;

[0148] A second detection submodule, used to detect the discharge current of the target battery;

[0149] The second regulating submodule is used to dynamically regulate the output voltage of the target power supply according to the discharge current.

[0150] In some embodiments, the second regulating submodule may specifically include:

[0151] a third control unit, configured to control the target power supply to increase an output voltage when the discharge current is greater than or equal to a second current threshold;

[0152] The second returning unit is configured to return to executing the step of controlling the target power supply to reduce the output voltage when the discharge current is less than the second current threshold.

[0153] In some embodiments, the charge and discharge control device 500 may further include:

[0154] A third returning module is configured to return to executing the step of controlling the target power source to reduce the output voltage when the battery state does not satisfy the preset charging condition.

[0155] In some embodiments, the discharge control module 503 may specifically include:

[0156] The third control submodule is used to control the target battery and the target power supply to jointly supply power to the load.

[0157] In some embodiments, the target power supply includes a direct current converter connected to a high voltage power supply.

[0158] Therefore, by adjusting the output voltage of the target power supply, when the target battery needs to be charged, the output voltage of the target power supply is adjusted to be greater than the voltage of the target battery, thereby charging the target battery. After the target battery meets the preset discharge condition, the output voltage of the target power supply is adjusted to be less than the voltage of the target battery, so that the target battery is discharged. In this way, the target battery will not be in a high power state for a long time after being charged to a high power level, thereby extending the service life of the battery.

[0159] Figure 6 It is a schematic diagram of the structure of an electronic device provided by an embodiment of the present application.

[0160] The electronic device 600 may include a processor 601 and a memory 602 storing computer program instructions.

[0161] Specifically, the processor 601 may include a central processing unit (CPU), or an application specific integrated circuit (ASIC), or may be configured to implement one or more integrated circuits of the embodiments of the present application.

[0162] The memory 602 may include a large capacity memory for data or instructions. By way of example and not limitation, the memory 602 may include a hard disk drive (HDD), a floppy disk drive, a flash memory, an optical disk, a magneto-optical disk, a magnetic tape, or a universal serial bus (USB) drive or a combination of two or more of these. In appropriate cases, the memory 602 may include a removable or non-removable (or fixed) medium. In appropriate cases, the memory 602 may be inside or outside the integrated gateway disaster recovery device. In a specific embodiment, the memory 602 is a non-volatile solid-state memory.

[0163] In certain embodiments, the memory may include a read-only memory (ROM), a random access memory (RAM), a magnetic disk storage medium device, an optical storage medium device, a flash memory device, an electrical, optical or other physical / tangible memory storage device. Thus, typically, the memory includes one or more tangible (non-transitory) computer-readable storage media (e.g., a memory device) encoded with software including computer-executable instructions, and when the software is executed (e.g., by one or more processors), it is operable to perform the operations described with reference to the method according to one aspect of the present application.

[0164] The processor 601 implements any one of the charge and discharge control methods in the above embodiments by reading and executing computer program instructions stored in the memory 602 .

[0165] In some examples, the electronic device 600 may further include a communication interface 603 and a bus 610. Figure 6 As shown, the processor 601, the memory 602, and the communication interface 603 are connected via a bus 610 and communicate with each other.

[0166] The communication interface 603 is mainly used to implement communication between various modules, devices, units and / or equipment in the embodiments of the present application.

[0167] Bus 610 includes hardware, software or both, and the parts of online data flow billing equipment are coupled to each other. For example, but not limitation, bus 610 may include accelerated graphics port (AGP) or other graphics bus, enhanced industrial standard architecture (EISA) bus, front-end bus (FSB), hypertransport (HT) interconnection, industrial standard architecture (ISA) bus, infinite bandwidth interconnection, low pin count (LPC) bus, memory bus, micro channel architecture (MCA) bus, peripheral component interconnection (PCI) bus, PCI-Express (PCI-X) bus, serial advanced technology attachment (SATA) bus, video electronics standard association local (VLB) bus or other suitable bus or two or more of these combinations. In appropriate cases, bus 610 may include one or more buses. Although the present application embodiment describes and shows a specific bus, the present application considers any suitable bus or interconnection.

[0168] Exemplarily, the electronic device 600 may be a mobile phone, a tablet computer, a laptop computer, a PDA, an in-vehicle electronic device, an ultra-mobile personal computer (UMPC), a netbook, or a personal digital assistant (PDA).

[0169] The electronic device 600 can execute the charge and discharge control method in the embodiment of the present application, thereby realizing the combination Figures 3 to 5 Described charging and discharging control method and device.

[0170] In addition, in combination with the charge and discharge control method in the above embodiment, the embodiment of the present application may provide a computer-readable storage medium to implement. The computer-readable storage medium stores computer program instructions; when the computer program instructions are executed by the processor, any one of the charge and discharge control methods in the above embodiment is implemented. Examples of computer-readable storage media include non-transitory computer-readable storage media, such as portable disks, hard disks, random access memories (RAM), read-only memories (ROM), erasable programmable read-only memories (EPROM or flash memory), portable compact disk read-only memories (CD-ROM), optical storage devices, magnetic storage devices, etc.

[0171] It should be clear that the present application is not limited to the specific configuration and processing described above and shown in the figures. For the sake of simplicity, a detailed description of the known method is omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method process of the present application is not limited to the specific steps described and shown, and those skilled in the art can make various changes, modifications and additions, or change the order between the steps after understanding the spirit of the present application.

[0172] The functional blocks shown in the above-described block diagram can be implemented as hardware, software, firmware or a combination thereof. When implemented in hardware, it can be, for example, an electronic circuit, an application specific integrated circuit (ASIC), appropriate firmware, a plug-in, a function card, etc. When implemented in software, the elements of the present application are programs or code segments that are used to perform the required tasks. The program or code segment can be stored in a machine-readable medium, or transmitted on a transmission medium or a communication link by a data signal carried in a carrier wave. "Machine-readable medium" can include any medium capable of storing or transmitting information. Examples of machine-readable media include electronic circuits, semiconductor memory devices, ROM, flash memory, erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, optical fiber media, radio frequency (RF) links, etc. The code segment can be downloaded via a computer network such as the Internet, an intranet, etc.

[0173] It should also be noted that the exemplary embodiments mentioned in this application describe some methods or systems based on a series of steps or devices. However, this application is not limited to the order of the above steps, that is, the steps can be performed in the order mentioned in the embodiment, or in a different order from the embodiment, or several steps can be performed simultaneously.

[0174] The above reference is according to the method of the embodiment of the present application, the flow chart of the device (system) and the computer program product and / or the block diagram described various aspects of the present application.It should be understood that each square box in the flow chart and / or the block diagram and the combination of each square box in the flow chart and / or the block diagram can be realized by computer program instructions.These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer or other programmable data processing device to produce a machine so that these instructions executed by the processor of the computer or other programmable data processing device enable the realization of the function / action specified in one or more square boxes of the flow chart and / or the block diagram.Such a processor can be but is not limited to a general-purpose processor, a special-purpose processor, a special application processor or a field programmable logic circuit.It can also be understood that each square box in the block diagram and / or the flow chart and the combination of the square boxes in the block diagram and / or the flow chart can also be realized by the dedicated hardware that performs the specified function or action, or can be realized by the combination of dedicated hardware and computer instructions.

[0175] The above is only a specific implementation of the present application. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. It should be understood that the protection scope of the present application is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in this application, and these modifications or replacements should be included in the protection scope of this application.

Claims

1. A charge and discharge control method, characterized in that: include: Get the battery status of the target battery; When the battery state satisfies a preset charging condition, controlling the output voltage of the target power supply to be greater than the voltage of the target battery, and charging the target battery with the output voltage; When the target battery meets a preset discharge condition, the output voltage of the target power source is controlled to be lower than the voltage of the target battery, so as to control the target battery to discharge.

2. The method according to claim 1, characterized in that After controlling the output voltage of the target power supply to be lower than the voltage of the target battery so as to discharge the target battery, the method further includes: Returns the battery status of the target battery for executing the acquisition.

3. The method according to claim 1 or 2, characterized in that: The controlling the output voltage of the target power supply to be greater than the voltage of the target battery comprises: Controlling the target power supply to increase output voltage; Detecting a charging current used by the target power source to charge the target battery; The output voltage of the target power supply is dynamically adjusted according to the charging current.

4. The method according to claim 3, characterized in that The dynamically adjusting the output voltage of the target power supply according to the charging current includes: When the charging current is greater than a first current threshold, controlling the target power supply to reduce an output voltage; When the charging current is equal to the first current threshold, controlling the output voltage of the target power supply to remain unchanged; When the charging current is less than the first current threshold, the control of the target power supply is returned to increase the output voltage.

5. The method according to claim 3, characterized in that: The method further comprises: In a case where the target battery does not satisfy the preset discharge condition, returning to the step of controlling the target power source to increase the output voltage.

6. The method according to any one of claims 1 to 5, characterized in that The preset discharge condition includes at least one of a voltage of the target battery being greater than a preset voltage threshold and a remaining power of the target battery being greater than a preset power threshold.

7. The method according to claim 1 or 2, characterized in that: The controlling the output voltage of the target power supply to be lower than the voltage of the target battery includes: Controlling the target power supply to reduce output voltage; detecting a discharge current of the target battery; The output voltage of the target power supply is dynamically adjusted according to the discharge current.

8. The method according to claim 7, characterized in that The dynamically adjusting the output voltage of the target power supply according to the discharge current includes: When the discharge current is greater than or equal to a second current threshold, controlling the target power supply to increase the output voltage; When the discharge current is less than the second current threshold, the control of the target power supply is returned to reduce the output voltage.

9. The method according to claim 7, characterized in that: The method further comprises: In a case where the battery state does not satisfy the preset charging condition, returning to the step of controlling the target power source to reduce the output voltage.

10. The method according to any one of claims 1 to 9, characterized in that The controlling the target battery to discharge includes: The target battery and the target power supply are controlled to supply power to a load together.

11. The method according to any one of claims 1 to 10, characterized in that The target power supply includes a direct current converter connected to a high voltage power supply.

12. A charge and discharge control device, characterized in that: include: A status acquisition module, used to acquire the battery status of the target battery; A charging control module, configured to control the output voltage of a target power source to be greater than the voltage of the target battery when the battery state satisfies a preset charging condition, and to charge the target battery using the output voltage; The discharge control module is used to control the output voltage of the target power supply to be lower than the voltage of the target battery when the target battery meets a preset discharge condition, so as to control the discharge of the target battery.

13. An electronic device, characterized in that: include: a processor and a memory storing computer program instructions; When the processor executes the computer program instructions, the steps of the charge and discharge control method according to any one of claims 1 to 11 are implemented.

14. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer program instructions, and when the computer program instructions are executed by a processor, the steps of the charge and discharge control method according to any one of claims 1 to 11 are implemented.

15. A battery management system, characterized in that: include: A target battery, a target power source, and a charge and discharge control device as claimed in claim 12, wherein: The target power supply is electrically connected to a load; The target battery is connected in parallel with the target power source; The charge and discharge control device is communicatively connected to the target battery and the target power source respectively.

16. The system according to claim 15, characterized in that The target power supply includes a DC converter connected to a high voltage power supply.

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