Secondary battery management method, device, system, and product

Abstract

The application discloses a secondary battery management method, device, system and product. The method comprises the following steps: acquiring first encoding information of a secondary battery when the secondary battery is charging or discharging and second encoding information of an external target device, wherein the external target device is configured as an external power consumption device where the secondary battery is located, or an external charging device for charging the secondary battery; in response to the first encoding information not matching the second encoding information, acquiring a charging parameter when the secondary battery is charging or a discharging parameter when the secondary battery is discharging; and determining a charging strategy or a discharging strategy of the secondary battery based on the charging parameter or the discharging parameter. According to the embodiment of the application, the safety of the secondary battery during charging and discharging can be improved.

Description

Technical Field

[0001] This application belongs to the field of charge and discharge technology, and in particular relates to a secondary battery management method, device, system and product. Background Technology

[0002] Currently, there are many instances of battery misuse in practical applications. For example, users may charge batteries with incompatible chargers or use batteries in incompatible vehicles. Such misuse can easily lead to battery safety accidents while the battery is charging or discharging, resulting in low safety. Summary of the Invention

[0003] The purpose of this application is to provide a secondary battery management method, device, system, and product that can improve the safety of secondary batteries during charging and discharging.

[0004] In a first aspect, embodiments of this application provide a secondary battery management method, the method comprising: acquiring first coding information of the secondary battery during charging or discharging and second coding information of an external target device, wherein the external target device is configured as an external power-consuming device where the secondary battery is located, or an external charging device for charging the secondary battery; in response to a mismatch between the first coding information and the second coding information, acquiring charging parameters during charging or discharging parameters during discharging of the secondary battery; and determining a charging strategy or discharging strategy for the secondary battery based on the charging parameters or discharging parameters.

[0005] In some possible implementations of the first aspect, in response to a mismatch between the first and second coding information, obtaining charging parameters during secondary battery charging or discharging parameters during secondary battery discharging includes: in response to a mismatch between the first and second coding information, obtaining first model information of the secondary battery in the first coding information and second model information of the external target device in the second coding information; adjusting a target value based on the matching result of the first and second model information, the target value indicating the cumulative number of mismatches between the secondary battery and the external target device; determining whether the adjusted target value is greater than a first threshold; in response to the adjusted target value being greater than the first threshold, disconnecting the charging or discharging of the secondary battery; or, in response to the adjusted target value not being greater than the first threshold, obtaining the charging or discharging parameters of the secondary battery.

[0006] In some possible implementations of the first aspect, adjusting the target value based on the matching result of the first model information and the second model information includes: adjusting the target value to zero in response to the matching of the first model information and the second model information; allowing the secondary battery to discharge and sending a first instruction to an electronic device connected to the battery management system, the first instruction indicating that the secondary battery has been successfully matched with the external power device and indicating whether the secondary battery has been stolen or whether it is necessary to re-bind the secondary battery to the external power device.

[0007] In some possible implementations of the first aspect, the method further includes: in response to a match between first model information and second model information, sending a second instruction to an electronic device connected to a battery management system, the second instruction indicating whether the secondary battery has been stolen; in response to receiving an instruction that the secondary battery has been stolen, prohibiting charging and / or discharging of the secondary battery; or, in response to not receiving an instruction that the secondary battery has been stolen, allowing charging of the secondary battery and sending an instruction to the electronic device indicating whether it is necessary to re-bind the secondary battery to an external charging device.

[0008] In some possible implementations of the first aspect, the charging parameters include the output voltage and / or output current of the external charging device. Based on the charging or discharging parameters, a charging strategy or discharging strategy for the secondary battery is determined, including: disconnecting the charging of the secondary battery in response to the output voltage being greater than the rated charging voltage of the secondary battery, and / or the output current being greater than the rated charging current of the secondary battery; or, determining a first strategy as the charging strategy for the secondary battery in response to the output voltage not being greater than the rated charging voltage and the output current not being greater than the rated charging current, wherein the first strategy includes at least one of the following: lowering the charging overvoltage protection threshold, lowering the charging overtemperature protection threshold, raising the charging low temperature protection threshold, and disconnecting the charging circuit after the charging time reaches a first duration threshold.

[0009] In some possible implementations of the first aspect, the discharge parameters include the discharge current. Based on the charging parameters or the discharge parameters, a charging strategy or a discharging strategy for the secondary battery is determined, including: prohibiting the secondary battery from discharging in response to a continuous duration of the discharge current being greater than the rated discharge current of the secondary battery exceeding a second duration threshold; or, in response to a continuous duration not exceeding the second duration threshold, determining a second strategy as the discharge strategy for the secondary battery, and sending a third instruction to an electronic device connected to the battery management system, the third instruction indicating the disabling of external electrical equipment and indicating whether the secondary battery has been stolen; wherein the second strategy includes at least one of the following: raising the undervoltage protection threshold, lowering the discharge over-temperature protection threshold, and disconnecting the discharge circuit after the discharge duration reaches a third duration threshold.

[0010] In some possible implementations of the first aspect, the method further includes: in response to the adjusted target value not being greater than a first threshold, acquiring matching parameters between the secondary battery and the external power device, the matching parameters including the amount of shaking of the secondary battery in the battery compartment of the external power device, and / or, a target distance between the secondary battery and the battery compartment; in response to the matching parameters meeting an alarm condition, sending a third instruction to an electronic device connected to the battery management system, the third instruction being used to instruct the external power device to be disabled and to indicate whether the secondary battery has been stolen.

[0011] In some possible implementations of the first aspect, the method further includes: adjusting a target value in response to a match between the first coded information and the second coded information, the target value indicating the cumulative number of mismatches between the secondary battery and the external target device; allowing the secondary battery to charge and / or discharge; and sending a fourth instruction to an electronic device connected to the battery management system, the fourth instruction indicating that the secondary battery has successfully matched with the target external device.

[0012] Secondly, embodiments of this application provide a secondary battery management device, which includes: an acquisition module, configured to acquire first coding information of the secondary battery during charging or discharging and second coding information of an external target device, wherein the external target device is configured as an external power-consuming device where the secondary battery is located, or an external charging device for charging the secondary battery; the acquisition module is further configured to acquire charging parameters during charging or discharging parameters during discharging of the secondary battery in response to a mismatch between the first coding information and the second coding information; and a determination module, configured to determine a charging strategy or a discharging strategy for the secondary battery based on the charging parameters or the discharging parameters.

[0013] In some possible implementations of the second aspect, the acquisition module includes: an acquisition unit, configured to acquire, in response to a mismatch between the first and second coded information, a first model information of the secondary battery in the first coded information and a second model information of the external target device in the second coded information; an adjustment unit, configured to adjust a target value based on the matching result of the first and second model information, the target value indicating the cumulative number of mismatches between the secondary battery and the external target device; a judgment unit, configured to judge whether the adjusted target value is greater than a first threshold; and a control unit, configured to disconnect the charging or discharging of the secondary battery in response to the adjusted target value being greater than the first threshold; or, the acquisition unit, configured to acquire the charging or discharging parameters of the secondary battery in response to the adjusted target value not being greater than the first threshold.

[0014] In some possible implementations of the second aspect, the adjustment unit is specifically used to adjust the target value to zero in response to the matching of the first model information and the second model information; the control unit is also used to allow the secondary battery to discharge and send a first instruction to an electronic device connected to the battery management system, the first instruction being used to indicate that the secondary battery has been successfully matched with the external power device and to indicate whether the secondary battery has been stolen or whether it is necessary to re-bind the secondary battery to the external power device.

[0015] In some possible implementations of the second aspect, the control unit is further configured to: in response to a match between the first model information and the second model information, send a second instruction to an electronic device connected to the battery management system, the second instruction indicating whether the secondary battery has been stolen; in response to receiving an instruction that the secondary battery has been stolen, prohibit charging and / or discharging the secondary battery; or, in response to not receiving an instruction that the secondary battery has been stolen, allow charging of the secondary battery and send an instruction to the electronic device indicating whether it is necessary to re-bind the secondary battery to an external charging device.

[0016] In some possible implementations of the second aspect, the charging parameters include the output voltage and / or output current of the external charging device, and the determining module is specifically used to: disconnect the charging of the secondary battery in response to the output voltage being greater than the rated charging voltage of the secondary battery, and / or the output current being greater than the rated charging current of the secondary battery; or, in response to the output voltage not being greater than the rated charging voltage and the output current not being greater than the rated charging current, determine a first strategy as the charging strategy for the secondary battery, wherein the first strategy includes at least one of the following: lowering the charging overvoltage protection threshold, lowering the charging overtemperature protection threshold, raising the charging low temperature protection threshold, and disconnecting the charging circuit after the charging time reaches a first duration threshold.

[0017] In some possible implementations of the second aspect, the discharge parameters include the discharge current, and the determining module is specifically used to: prohibit the discharge of the secondary battery in response to the continuous duration of the discharge current being greater than the rated discharge current of the secondary battery being greater than a second duration threshold; or, in response to the continuous duration not being greater than the second duration threshold, determine the second strategy as the discharge strategy of the secondary battery, and send a third instruction to an electronic device connected to the battery management system, the third instruction being used to instruct the external electrical equipment to be disabled and to indicate whether the secondary battery has been stolen; wherein the second strategy includes at least one of the following: raising the undervoltage protection threshold, lowering the discharge overtemperature protection threshold, and disconnecting the discharge circuit after the discharge duration reaches the third duration threshold.

[0018] In some possible implementations of the second aspect, the acquisition unit is further configured to acquire matching parameters between the secondary battery and the external power device in response to the adjusted target value not being greater than a first threshold. The matching parameters include the amount of shaking of the secondary battery in the battery compartment of the external power device and / or the target distance between the secondary battery and the battery compartment. The control unit is further configured to send a third instruction to an electronic device connected to the battery management system in response to the matching parameters meeting an alarm condition. The third instruction is used to instruct the external power device to be disabled and to indicate whether the secondary battery has been stolen.

[0019] In some possible implementations of the second aspect, the apparatus further includes: an adjustment module for adjusting a target value in response to a match between the first coded information and the second coded information, the target value indicating the cumulative number of mismatches between the secondary battery and an external target device; a control module for allowing the secondary battery to charge and / or discharge; and a transmission module for sending a fourth instruction to an electronic device connected to the battery management system, the fourth instruction indicating that the secondary battery has successfully matched with the target external device.

[0020] Thirdly, embodiments of this application provide a battery management system, including: a processor and a memory storing computer program instructions; the processor executes the computer program instructions to implement the steps of the secondary battery management method of the first aspect.

[0021] Fourthly, embodiments of this application provide an electronic device, including: a processor and a memory storing computer program instructions; the processor executes the computer program instructions to implement the steps of the secondary battery management method of the first aspect.

[0022] Fifthly, embodiments of this application provide a computer-readable storage medium storing computer program instructions, which, when executed by a processor, implement the steps of the secondary battery management method of the first aspect.

[0023] In a sixth aspect, embodiments of this application provide a computer program product stored in a non-volatile storage medium, which is executed by at least one processor to implement the steps of the secondary battery management method of the first aspect.

[0024] In a seventh aspect, embodiments of this application provide a chip including a processor and a communication interface, the communication interface being coupled to the processor, the processor being used to run programs or instructions to implement the steps of the secondary battery management method as described in the first aspect.

[0025] This application provides a secondary battery management method, apparatus, system, and product. In scenarios where an external charging device charges a secondary battery, or the secondary battery supplies power to an external electrical device, the method acquires first coding information of the secondary battery and second coding information of the external charging device or external electrical device. If the first coding information and the second coding information do not match, it indicates that the user may have used an incompatible charger to charge the secondary battery, or the user may have placed the secondary battery in an incompatible external electrical device for use. In such cases, the charging and discharging of the secondary battery is prone to safety accidents. Therefore, after determining that the first coding information and the second coding information do not match, this application can acquire the charging parameters during charging or the discharging parameters during discharging of the secondary battery. Based on these charging or discharging parameters, a charging strategy or discharging strategy for the secondary battery is determined. This allows for timely adjustments to the charging and discharging strategy based on the actual charging and discharging conditions of the secondary battery, mitigating the problem of battery abuse leading to safety accidents and improving the safety of the secondary battery during charging and discharging. Attached Figure Description

[0026] 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.

[0027] Figure 1 This is a schematic flowchart of a secondary battery management method provided in an embodiment of this application;

[0028] Figure 2 This is a flowchart illustrating a secondary battery management method provided in another embodiment of this application;

[0029] Figure 3 This is a flowchart illustrating a secondary battery management method provided in another embodiment of this application;

[0030] Figure 4 This is a flowchart illustrating a secondary battery management method provided in another embodiment of this application;

[0031] Figure 5 This is a schematic diagram of the structure of a secondary battery management device provided in an embodiment of this application;

[0032] Figure 6 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. Detailed Implementation

[0033] The features and exemplary embodiments of various aspects of this application will be described in detail below. To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain this application and not to limit it. For those skilled in the art, this application can be implemented without some of these specific details. The following description of the embodiments is merely to provide a better understanding of this application by illustrating examples.

[0034] In practical applications, there are many instances of battery misuse, such as users charging batteries with incompatible chargers or using batteries in incompatible vehicles. When the battery is charging or discharging, such misuse can easily lead to safety accidents, resulting in low battery safety.

[0035] To address the problems in related technologies, this application provides a secondary battery management method. In scenarios where an external charging device charges the secondary battery or the secondary battery supplies power to an external device, the method acquires first coding information of the secondary battery and second coding information of the external charging device or external device. If the first coding information and the second coding information do not match, it indicates that the user may have used an incompatible charger to charge the secondary battery, or the user may have placed the secondary battery in an incompatible external device for use. In such cases, the charging and discharging of the secondary battery is prone to safety accidents. Therefore, after determining that the first coding information and the second coding information do not match, this application can acquire the charging parameters during charging or the discharging parameters during discharging of the secondary battery. Based on these charging or discharging parameters, a charging strategy or discharging strategy for the secondary battery is determined. This allows for timely adjustments to the charging and discharging strategy based on the actual charging and discharging conditions of the secondary battery, mitigating the problem of battery abuse leading to safety accidents, improving the safety of the secondary battery during charging and discharging, and thus addressing the issue of low safety in related technologies due to battery abuse.

[0036] The secondary battery management method provided in this application will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.

[0037] Figure 1 This is a flowchart illustrating a secondary battery management method according to an embodiment of this application. The execution entity of this secondary battery management method can be a battery management system. It should be noted that the aforementioned execution entity does not constitute a limitation on this application.

[0038] like Figure 1 As shown, the secondary battery management method provided in this application embodiment may include steps 110-130.

[0039] Step 110: Obtain the first encoding information of the secondary battery during charging or discharging and the second encoding information of the external target device.

[0040] The external target device is configured as an external electrical device where the secondary battery is located, or an external charging device for charging the secondary battery.

[0041] For example, the aforementioned external electrical equipment can be an electric two-wheeler, an electric motorcycle, a power tool, an unmanned aerial vehicle, an energy storage system, or other equipment that uses the electrical energy of a secondary battery to operate. The secondary battery can be a lithium-ion battery, a sodium-ion battery, or a solid-state battery, etc.; the aforementioned external charging equipment can be a charger or other equipment that can charge the secondary battery.

[0042] Step 120: In response to the mismatch between the first encoded information and the second encoded information, obtain the charging parameters during secondary battery charging or the discharge parameters during secondary battery discharging.

[0043] Step 130: Determine the charging strategy or discharging strategy for the secondary battery based on the charging parameters or discharging parameters.

[0044] The secondary battery management method provided in this application, in scenarios where an external charging device charges the secondary battery or the secondary battery supplies power to an external electrical device, acquires first coding information of the secondary battery and second coding information of the external charging device or external electrical device. If the first coding information and the second coding information do not match, it indicates that the user may have used an incompatible charger to charge the secondary battery, or the user may have placed the secondary battery in an incompatible external electrical device for use. In this case, the charging and discharging of the secondary battery is prone to safety accidents. Based on this, after determining that the first coding information and the second coding information do not match, this application can acquire the charging parameters during charging or the discharging parameters during discharging of the secondary battery. Based on these charging or discharging parameters, a charging strategy or discharging strategy for the secondary battery is determined, and the charging and discharging strategy of the secondary battery is adjusted in a timely manner based on the actual charging and discharging situation of the secondary battery. This improves the problem that battery abuse can easily lead to battery safety accidents and enhances the safety of secondary battery charging and discharging.

[0045] The specific implementation of the above steps will be explained in detail below with reference to specific embodiments.

[0046] Step 110 involves obtaining the first encoding information of the secondary battery during charging or discharging and the second encoding information of the external target device.

[0047] In one embodiment, the specific content of the first encoding information and the second encoding information may include, but is not limited to: model information, manufacturer information, batch number, and serial number.

[0048] In one embodiment, the battery management system can receive second encoded information sent by an external target device via communication methods such as Bluetooth or wireless LAN, and compare and verify the first encoded information and the second encoded information to determine whether the first encoded information and the second encoded information match.

[0049] Specifically, the battery management system can obtain the coding mapping relationship between the secondary battery and the external target device, and search for the target coding information that matches the first coding information from the coding mapping relationship. If the second coding information is the same as the target coding information, then it can be determined that the first coding information matches the second coding information.

[0050] In one embodiment, prior to step 110, the method may further include: in the event that the battery management system fails to communicate with the external target device, incrementing a target value by 1, the target value being used to indicate the cumulative number of mismatches between the secondary battery and the external target device; disconnecting the charging or discharging of the secondary battery in response to the adjusted target value being greater than a first threshold, or obtaining the charging or discharging parameters of the secondary battery in response to the adjusted target value not being greater than the first threshold.

[0051] In step 120, in response to a mismatch between the first and second encoded information, the charging parameters during secondary battery charging or the discharge parameters during secondary battery discharging are obtained.

[0052] In some embodiments of this application, Figure 2 This is a flowchart illustrating a secondary battery management method according to another embodiment of this application. Step 120 may include... Figure 2 Steps 210-240 are shown.

[0053] Step 210: In response to the mismatch between the first encoding information and the second encoding information, obtain the first model information of the secondary battery in the first encoding information and the second model information of the external target device in the second encoding information.

[0054] The first model information is the model information of the secondary battery, and the second model information is the model information of the external target device.

[0055] Step 220: Adjust the target value based on the matching result of the first model information and the second model information.

[0056] Specifically, the target value can be used to indicate the cumulative number of mismatches between the secondary battery and the external target device. It can be adjusted based on whether the matching result is a match or a mismatch. When the matching result is "mismatch", the target value is incremented by 1, and when the matching result is "match", the target value is cleared to zero, that is, the target value is adjusted to zero.

[0057] Step 230: Determine whether the adjusted target value is greater than the first threshold.

[0058] The first threshold is not limited to a specific value. For example, the first threshold can be set to 5, 6 or other values. This application does not make any specific limitation here.

[0059] Step 240: In response to the adjusted target value being greater than the first threshold, disconnect the charging or discharging of the secondary battery; or in response to the adjusted target value not being greater than the first threshold, obtain the charging or discharging parameters of the secondary battery.

[0060] Specifically, in response to the adjusted target value being greater than the first threshold, when an external charging device is charging the secondary battery, the battery management system can disconnect the charging circuit of the secondary battery to prevent the secondary battery from continuing to charge; when the secondary battery is supplying power to an external electrical device, i.e., the secondary battery is discharging, the battery management system can disconnect the discharging circuit of the secondary battery to prevent the secondary battery from continuing to discharge.

[0061] In this embodiment of the application, when the coding information and model information of the secondary battery and the external target device do not match, by adjusting the target value used to indicate the cumulative number of mismatches between the secondary battery and the external target device, the charging circuit or discharging circuit of the secondary battery can be disconnected when the cumulative number of mismatches is high. This can prevent the secondary battery from continuing to charge and discharge under abuse conditions, reduce the number of times the secondary battery is abused, and thus reduce the risk of damage to the secondary battery or safety accidents caused by abuse.

[0062] In some embodiments of this application, when the external target device is an external power-consuming device and the secondary battery is supplying power to the external power-consuming device, step 220 may specifically include the following steps: in response to the matching of the first model information and the second model information, the target value is adjusted to zero; the secondary battery is allowed to discharge, and a first instruction is sent to the electronic device connected to the battery management system. The first instruction is used to indicate that the secondary battery has been successfully matched with the external target device, and to indicate whether the secondary battery has been stolen or whether it is necessary to rebind the secondary battery to the external power-consuming device.

[0063] Specifically, the external target device can be an external power device. When the first model information matches the second model information, it means that the secondary battery and the external power device are matched. At this time, the secondary battery can enter the normal discharge state. The battery management system allows the secondary battery to continue discharging and sends a first instruction to the electronic device connected to the battery management system to prompt the user that the secondary battery and the external power device have been successfully matched. It also asks the user whether the secondary battery has been stolen or whether it needs to be re-bound to the external power device, so as to ensure that the secondary battery can be notified of the theft in a timely manner in the event of the theft, and to help the user reduce the loss of theft as much as possible.

[0064] In some other embodiments of this application, when the external target device is an external charging device and the external power device is charging a secondary battery, step 220 may specifically include the following steps: in response to the first model information matching the second model information, sending a second instruction to an electronic device connected to the battery management system, the second instruction being used to indicate whether the secondary battery has been stolen; in response to receiving the instruction that the secondary battery has been stolen, prohibiting the charging and / or discharging of the secondary battery; or, in response to not receiving the instruction that the secondary battery has been stolen, allowing the secondary battery to charge, and sending an instruction to the electronic device as to whether it is necessary to rebind the secondary battery to the external charging device.

[0065] Specifically, the external target device can be an external charging device. When the first model information matches the second model information, it indicates that the secondary battery may match the model of the external power device. To further verify authenticity, the battery management system can send a second instruction to the connected electronic device, inquiring whether the secondary battery has been stolen. If the battery management system receives an instruction indicating that the secondary battery has been stolen, it immediately prohibits charging and / or discharging the secondary battery to minimize the user's losses. If it does not receive an instruction indicating that the secondary battery has been stolen, it allows charging the secondary battery and sends an instruction to the electronic device asking whether it needs to re-bind the secondary battery to the external charging device to update the coding information of the secondary battery and the external power device. This ensures that the next time the secondary battery is used to power the external power device, the verification process can be completed directly without a cumbersome verification procedure.

[0066] In some embodiments of this application, in scenarios where the external target device is an external power-consuming device and the secondary battery supplies power to the external power-consuming device, in order to improve the accuracy of the matching results between the secondary battery and the external power-consuming device, Figure 3 This is a flowchart illustrating a secondary battery management method provided in another embodiment of this application, as shown below. Figure 3 As shown, after step 230, the method may further include steps 310 and 320.

[0067] Step 310: In response to the adjusted target value not being greater than the first threshold, obtain the matching parameters between the secondary battery and the external electrical equipment.

[0068] The matching parameters may include the amount of shaking of the secondary battery in the battery compartment of the external electrical device, and / or the target distance between the secondary battery and the battery compartment.

[0069] Step 320: In response to the matching parameters meeting the alarm conditions, a third instruction is sent to the electronic device connected to the battery management system. The third instruction is used to instruct the external power device to be disabled and to indicate whether the secondary battery has been stolen.

[0070] The alarm conditions may include at least one of the following: the amount of shaking is greater than the shaking amount threshold, or the target spacing is greater than the spacing threshold.

[0071] The sway threshold and the spacing threshold are not limited to a specific value. For example, the sway threshold can be set to 3cm and the spacing threshold can be set to 1cm, or other values. This application does not make any specific limitations here.

[0072] In this embodiment, because the secondary battery and the external power device are matched, the space occupied by the secondary battery is adapted to the battery compartment space of the external power device, and the secondary battery is relatively stable in the external battery compartment. Based on this, by obtaining the amount of shaking of the secondary battery in the battery compartment of the external power device, and / or the target distance between the secondary battery and the battery compartment, and making a judgment based on the amount of shaking and the target distance, it is possible to determine whether the secondary battery and the charging compartment are matched, thereby accurately inferring whether the secondary battery and the external power device are matched, improving the accuracy of the matching result of the secondary battery and the external power device. Furthermore, after confirming that the secondary battery and the external power device are incompatible, a third command is sent to the user's electronic device to promptly prompt the user to take action, reducing the risk of damage to the secondary battery due to misuse or the occurrence of safety accidents.

[0073] In one embodiment, the method may further include: in response to a mismatch between the first encoding information and the second encoding information, storing the matching result between the secondary battery and the external target device, and uploading it to a backend server.

[0074] In this embodiment of the application, recording and storing the matching results and reporting them to the background is beneficial for tracing and investigating the cause of battery damage or safety accidents, and also facilitates the determination of responsibility for the problem.

[0075] Step 130 involves determining the charging or discharging strategy for the secondary battery based on the charging or discharging parameters.

[0076] In some embodiments of this application, when the external target device is an external charging device and the external charging device is charging a secondary battery, the charging parameters may include the output voltage and / or output current of the external charging device. Step 130 may specifically include the following steps: in response to the output voltage being greater than the rated charging voltage of the secondary battery and / or the output current being greater than the rated charging current of the secondary battery, disconnecting the charging of the secondary battery; or, in response to the output voltage not being greater than the rated charging voltage and the output current not being greater than the rated charging current, determining the first strategy as the charging strategy for the secondary battery.

[0077] The first strategy includes at least one of the following: lowering the charging overvoltage protection threshold, lowering the charging overtemperature protection threshold, raising the charging low temperature protection threshold, and disconnecting the charging circuit after the charging time reaches a first duration threshold; the charging overvoltage protection threshold, the charging overtemperature protection threshold, and the charging low temperature protection threshold can be set according to actual needs.

[0078] For example, for lithium-ion batteries based on lithium iron phosphate, the overvoltage protection threshold can be reduced from 3.65V to 3.7V to any value between 3.2V and 3.4V. For lithium-ion batteries based on ternary lithium and lithium manganese oxide, the overvoltage protection threshold can be reduced from around 4.7V to any value between 3.9V and 4.1V. This application does not make specific limitations here. The overtemperature protection threshold can be reduced from 55℃ to any value between 40℃ and 45℃. The low-temperature protection threshold can be increased by any value between 5℃ and 15℃ based on the current temperature value. This application does not make specific limitations here.

[0079] In this embodiment, if the output voltage of the external charging device exceeds the rated charging voltage of the secondary battery, or the output current exceeds the rated charging current of the secondary battery, it indicates that the charging performance of the external charging device is incompatible with the secondary battery. In other words, the external charging device cannot charge the secondary battery normally, which can easily lead to a safety accident during charging. Therefore, disconnecting the charging circuit of the secondary battery and preventing the external charging device from continuing to charge it can reduce the probability of a safety accident.

[0080] In some other embodiments of this application, when the external target device is an external power-consuming device and the secondary battery is supplying power to the external power-consuming device, the discharge parameters include the discharge current. Step 130 may specifically include the following steps: in response to the continuous duration of the discharge current being greater than the rated discharge current of the secondary battery being greater than a second duration threshold, the discharge of the secondary battery is prohibited; or, in response to the continuous duration not being greater than the second duration threshold, a second strategy is determined to be the discharge strategy of the secondary battery, and a third instruction is sent to the electronic device connected to the battery management system. The third instruction is used to indicate that the external power-consuming device is disabled and to indicate whether the secondary battery has been stolen.

[0081] The second strategy includes at least one of the following: raising the undervoltage protection threshold, lowering the discharge overtemperature protection threshold, and disconnecting the discharge circuit after the discharge duration reaches the third duration threshold.

[0082] The undervoltage protection threshold and the over-temperature protection threshold can be set according to actual needs. For example, for lithium-ion batteries based on lithium iron phosphate, the undervoltage protection threshold can be increased from about 2.5V to any value between 3.0V and 3.1V. For lithium-ion batteries based on ternary lithium and lithium manganese oxide, the undervoltage protection threshold can be increased from about 2.7V to any value between 3.1V and 3.3V. This application does not make specific limitations here. Similarly, the over-temperature protection threshold can be decreased from 65℃ to 70℃ to any value between 55℃ and 60℃. This application does not make specific limitations here.

[0083] The second and third duration thresholds are not limited to a specific value. For example, the second duration threshold can be set to 10 seconds and the third duration threshold can be set to 20 minutes. The second and third duration thresholds can also be set to other values. This application does not make any specific limitations here.

[0084] In this embodiment, if the discharge current of the secondary battery remains higher than the rated discharge current for an extended period, it indicates a mismatch between the charging performance of the external charging device and the secondary battery. This means the secondary battery cannot discharge normally, and in such cases, continuous discharge can easily lead to safety accidents. Therefore, disconnecting the discharge circuit of the secondary battery and preventing it from charging external devices can reduce the probability of safety accidents and also provide some protection against battery theft.

[0085] In some embodiments of this application, Figure 4 This is a flowchart illustrating a secondary battery management method provided in another embodiment of this application, as shown below. Figure 4 As shown, after step 110, the method may further include: steps 410-430.

[0086] Step 410: In response to the matching of the first encoded information and the second encoded information, adjust the target value.

[0087] The target value indicates the cumulative number of times the secondary battery and the external target device are mismatched.

[0088] Step 420 allows the secondary battery to be charged and / or discharged.

[0089] Step 430: Send a fourth instruction to the electronic device connected to the battery management system.

[0090] The fourth instruction is used to indicate that the secondary battery has been successfully matched with the target external device.

[0091] Specifically, if the first encoding information matches the second encoding information, it means that the secondary battery is fully matched with the external target device. Therefore, the target value can be cleared to zero, and the secondary battery can continue to charge and discharge. The user is informed of the successful matching result between the secondary battery and the target external device by sending a fourth instruction to the electronic device.

[0092] It is understood that the secondary battery management method provided in this application can be implemented by either a battery management system or a secondary battery management device. The secondary battery management device will be described in detail below.

[0093] Figure 5 This is a schematic diagram of the structure of a secondary battery management device provided in an embodiment of this application. Figure 5 As shown, the secondary battery management device 500 may include: an acquisition module 510 and a determination module 520.

[0094] The acquisition module 510 is used to acquire first coding information of the secondary battery and second coding information of an external target device when the secondary battery is charging or discharging. The external target device is configured as an external power-consuming device where the secondary battery is located, or an external charging device for charging the secondary battery. The acquisition module 510 is also used to acquire charging parameters when the secondary battery is charging or discharging parameters when the secondary battery is discharging in response to a mismatch between the first coding information and the second coding information. The determination module 520 is used to determine the charging strategy or discharging strategy of the secondary battery based on the charging parameters or discharging parameters.

[0095] In some embodiments of this application, the acquisition module 510 includes: an acquisition unit, configured to acquire first model information of the secondary battery in the first encoding information and second model information of the external target device in the second encoding information in response to a mismatch between the first encoding information and the second encoding information; an adjustment unit, configured to adjust a target value based on the matching result of the first model information and the second model information, the target value indicating the cumulative number of mismatches between the secondary battery and the external target device; a judgment unit, configured to judge whether the adjusted target value is greater than a first threshold; and a control unit, configured to disconnect the charging or discharging of the secondary battery in response to the adjusted target value being greater than the first threshold; or, the acquisition unit, configured to acquire the charging parameters or discharging parameters of the secondary battery in response to the adjusted target value not being greater than the first threshold.

[0096] In some embodiments of this application, the adjustment unit is specifically used to adjust the target value to zero in response to the matching of the first model information and the second model information; the control unit is also used to allow the secondary battery to discharge and send a first instruction to the electronic device connected to the battery management system. The first instruction is used to indicate that the secondary battery has been successfully matched with the external power device and to indicate whether the secondary battery has been stolen or whether it is necessary to re-bind the secondary battery with the external power device.

[0097] In some embodiments of this application, the control unit is further configured to: in response to a match between the first model information and the second model information, send a second instruction to an electronic device connected to the battery management system, the second instruction indicating whether the secondary battery has been stolen; in response to receiving an instruction that the secondary battery has been stolen, prohibit the charging and / or discharging of the secondary battery; or, in response to not receiving an instruction that the secondary battery has been stolen, allow the secondary battery to charge and send an instruction to the electronic device indicating whether the secondary battery needs to be re-bonded to an external charging device.

[0098] In some embodiments of this application, the charging parameters include the output voltage and / or output current of the external charging device. The determining module 520 is specifically used to: disconnect the charging of the secondary battery in response to the output voltage being greater than the rated charging voltage of the secondary battery and / or the output current being greater than the rated charging current of the secondary battery; or, in response to the output voltage not being greater than the rated charging voltage and the output current not being greater than the rated charging current, determine a first strategy as the charging strategy of the secondary battery, wherein the first strategy includes at least one of the following: lowering the charging overvoltage protection threshold, lowering the charging overtemperature protection threshold, raising the charging low temperature protection threshold, and disconnecting the charging circuit after the charging time reaches a first duration threshold.

[0099] In some embodiments of this application, the discharge parameters include the discharge current. The determining module 520 is specifically used to: prohibit the discharge of the secondary battery in response to the continuous duration of the discharge current being greater than the rated discharge current of the secondary battery being greater than a second duration threshold; or, in response to the continuous duration not being greater than the second duration threshold, determine the second strategy as the discharge strategy of the secondary battery, and send a third instruction to the electronic device connected to the battery management system. The third instruction is used to indicate that external electrical equipment is disabled and to indicate whether the secondary battery has been stolen. The second strategy includes at least one of the following: raising the undervoltage protection threshold, lowering the discharge overtemperature protection threshold, and disconnecting the discharge circuit after the discharge duration reaches the third duration threshold.

[0100] In some embodiments of this application, the acquisition unit is further configured to acquire matching parameters between the secondary battery and the external power device in response to the adjusted target value not being greater than a first threshold. The matching parameters include the amount of shaking of the secondary battery in the battery compartment of the external power device and / or the target distance between the secondary battery and the battery compartment. The control unit is further configured to send a third instruction to an electronic device connected to the battery management system in response to the matching parameters meeting an alarm condition. The third instruction is used to instruct the external power device to be disabled and to indicate whether the secondary battery has been stolen.

[0101] In some embodiments of this application, the apparatus further includes: an adjustment module for adjusting a target value in response to a match between the first encoded information and the second encoded information, the target value indicating the cumulative number of mismatches between the secondary battery and the external target device; a control module for allowing the secondary battery to charge and / or discharge; and a sending module for sending a fourth instruction to an electronic device connected to the battery management system, the fourth instruction indicating that the secondary battery has successfully matched with the target external device.

[0102] The secondary battery management device provided in this application acquires first coding information of the secondary battery and second coding information of the external charging device or external electrical device in scenarios where an external charging device charges the secondary battery or the secondary battery supplies power to an external electrical device. If the first coding information and the second coding information do not match, it indicates that the user may have used an incompatible charger to charge the secondary battery, or the user may have placed the secondary battery in an incompatible external electrical device for use. In this case, the charging and discharging of the secondary battery is prone to safety accidents. Based on this, after determining that the first coding information and the second coding information do not match, this application can acquire the charging parameters during charging or the discharging parameters during discharging of the secondary battery. Based on these charging or discharging parameters, a charging strategy or discharging strategy for the secondary battery can be determined, and the charging and discharging strategy of the secondary battery can be adjusted in a timely manner based on the actual charging and discharging situation of the secondary battery. This improves the problem that battery abuse can easily lead to battery safety accidents and enhances the safety of secondary battery charging and discharging.

[0103] The secondary battery management device provided in this application embodiment can achieve Figures 1-4 The various processes implemented by the electronic device in the method embodiment can achieve the same technical effect, and will not be described again here to avoid repetition.

[0104] Figure 6 This is a schematic diagram of the hardware structure of an electronic device provided in an embodiment of this application.

[0105] like Figure 6 As shown, the electronic device 600 in this embodiment may include a processor 601 and a memory 602 storing computer program instructions.

[0106] Specifically, the processor 601 may include a central processing unit (CPU), an application-specific integrated circuit (ASIC), or one or more integrated circuits that can be configured to implement the embodiments of this application.

[0107] Memory 602 may include mass storage for data or instructions. For example, and not limitingly, memory 602 may include a hard disk drive (HDD), floppy disk drive, flash memory, optical disk, magneto-optical disk, magnetic tape, or Universal Serial Bus (USB) drive, or a combination of two or more of these. Where appropriate, memory 602 may include removable or non-removable (or fixed) media. Where appropriate, memory 602 may be internal or external to the integrated gateway disaster recovery device. In a particular embodiment, memory 602 is non-volatile solid-state memory. Memory may include read-only memory (ROM), random access memory (RAM), disk storage media devices, optical storage media devices, flash memory devices, electrical, optical, or other physical / tangible memory storage devices. Therefore, typically, a memory includes one or more tangible (non-transitory) computer-readable storage media (e.g., memory devices) containing computer-executable instructions, and when the software is executed (e.g., by one or more processors), it is operable to perform operations described with reference to the methods according to embodiments of this application.

[0108] The processor 601 reads and executes computer program instructions stored in the memory 602 to implement any of the secondary battery management methods in the above embodiments.

[0109] In one example, electronic device 600 may also include a communication interface 603 and a bus 610. For example, Figure 6 As shown, the processor 601, memory 602, and communication interface 603 are connected through bus 610 and complete communication with each other.

[0110] The communication interface 603 is mainly used to realize communication between various modules, devices, units and / or equipment in the embodiments of this application.

[0111] Bus 610 includes hardware, software, or both, that couples components of an online data traffic metering device together. For example, and not limitingly, the bus may include an Accelerated Graphics Port (AGP) or other graphics bus, an Enhanced Industry Standard Architecture (EISA) bus, a Front Side Bus (FSB), HyperTransport (HT) interconnect, an Industry Standard Architecture (ISA) bus, an Infinite Bandwidth Interconnect, a Low Pin Count (LPC) bus, a memory bus, a Microchannel Architecture (MCA) bus, a Peripheral Component Interconnect (PCI) bus, a PCI-Express (PCI-X) bus, a Serial Advanced Technology Attachment (SATA) bus, a Video Electronics Standards Association Local (VLB) bus, or other suitable buses, or combinations of two or more of these. Where appropriate, bus 610 may include one or more buses. Although specific buses are described and illustrated in embodiments of this application, any suitable bus or interconnect is contemplated herein.

[0112] The electronic device provided in this application embodiment is capable of achieving Figures 1-4 The various processes implemented by the electronic device in the method embodiment can achieve the same technical effect, and will not be described again here to avoid repetition.

[0113] This application embodiment can provide a battery management system, which includes: a processor and a memory storing computer program instructions; when the processor executes the computer program instructions, it implements the steps of any of the secondary battery management methods in the above embodiments.

[0114] Furthermore, in conjunction with the secondary battery management methods in the above embodiments, this application embodiment can provide a computer storage medium for implementation. The computer storage medium stores computer program instructions; when these computer program instructions are executed by a processor, they implement the steps of any of the secondary battery management methods in the above embodiments.

[0115] In conjunction with the secondary battery management methods in the above embodiments, this application embodiment can provide a computer program product to implement them. This (computer) program product is stored in a non-volatile storage medium, and when executed by at least one processor, it implements the steps of any of the secondary battery management methods in the above embodiments.

[0116] This application also provides a chip, which includes a processor and a communication interface. The communication interface and the processor are coupled. The processor is used to run programs or instructions to implement the various processes of the above-described secondary battery management method embodiments and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0117] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0118] It should be clarified that this application is not limited to the specific configurations and processes described above and shown in the figures. For the sake of brevity, detailed descriptions of known methods are omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method process of this application is not limited to the specific steps described and shown. Those skilled in the art can make various changes, modifications, and additions, or change the order of steps, after understanding the spirit of this application.

[0119] 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, they can be, for example, electronic circuits, application-specific integrated circuits (ASICs), appropriate firmware, plug-ins, function cards, etc. When implemented in software, the elements of this application are programs or code segments used to perform the required tasks. Programs or code segments can be stored on a machine-readable medium or transmitted over a transmission medium or communication link via data signals carried on 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, fiber optic media, radio frequency (RF) links, etc. Code segments can be downloaded via computer networks such as the Internet, intranets, etc.

[0120] It should also be noted that the exemplary embodiments mentioned in this application describe methods or systems based on a series of steps or apparatus. 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 embodiments, or in a different order, or several steps can be performed simultaneously.

[0121] The aspects of this disclosure have been described above with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this disclosure. It should be understood that each block in the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing apparatus to produce a machine such that these instructions, executable via the processor of the computer or other programmable data processing apparatus, enable the implementation of the functions / actions specified in one or more blocks of the flowchart illustrations and / or block diagrams. 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 is also understood that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can also be implemented by special-purpose hardware performing the specified functions or actions, or can be implemented by a combination of special-purpose hardware and computer instructions.

[0122] The above description is merely a specific implementation of this application. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, modules, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here. It should be understood that the protection scope of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the protection scope of this application.

Claims

1. A secondary battery management method characterized by comprising: The method comprises: obtaining first encoding information of the secondary battery and second encoding information of an external target device during charging or discharging of the secondary battery, wherein the external target device is an external power consumption device or an external charging device configured to charge the secondary battery; obtaining charging parameters or discharging parameters of the secondary battery in response to the first encoding information not matching the second encoding information; determining a charging strategy or a discharging strategy of the secondary battery based on the charging parameters or the discharging parameters; The method further comprises: obtaining first model information of the secondary battery in the first encoding information and second model information of the external target device in the second encoding information in response to the first encoding information not matching the second encoding information; in the case that the external target device is an external power consumption device, controlling the secondary battery to continue discharging in response to the first model information matching the second model information.

2. The method of claim 1, wherein, The method further comprises: obtaining first model information of the secondary battery in the first encoding information and second model information of the external target device in the second encoding information in response to the first encoding information not matching the second encoding information; adjusting a target value based on a matching result of the first model information and the second model information, the target value being used to indicate a cumulative number of mismatches between the secondary battery and the external target device; determining whether the adjusted target value is greater than a first threshold value; in response to the adjusted target value being greater than the first threshold value, disconnecting charging or discharging of the secondary battery; or, in response to the adjusted target value not being greater than the first threshold value, obtaining the charging parameters or the discharging parameters of the secondary battery.

3. The method of claim 2, wherein, The method further comprises: in response to the first model information matching the second model information, adjusting the target value to zero; allowing the secondary battery to discharge and sending a first instruction to an electronic device connected to a battery management system, the first instruction being used to indicate that the secondary battery matches the external target device successfully and to indicate whether the secondary battery is stolen or whether the secondary battery needs to be re-bound with an external power consumption device.

4. The method of claim 2, wherein, The method further comprises: in response to the first model information matching the second model information, sending a second instruction to an electronic device connected to a battery management system, the second instruction being used to indicate whether the secondary battery is stolen; in response to receiving the instruction that the secondary battery is stolen, prohibiting charging and / or discharging of the secondary battery; or, in response to not receiving the instruction that the secondary battery is stolen, allowing the secondary battery to be charged and sending an instruction to the electronic device as to whether the secondary battery needs to be re-bound with an external charging device.

5. The method according to claim 1 or 2, characterized in that, The charging parameter includes an output voltage and / or an output current of the external charging device, and the determination of the charging strategy or the discharging strategy of the secondary battery based on the charging parameter or the discharging parameter includes: in response to the output voltage being greater than a rated charging voltage of the secondary battery, and / or the output current being greater than a rated charging current of the secondary battery, disconnecting the charging of the secondary battery; or, in response to the output voltage not being greater than the rated charging voltage, and the output current not being greater than the rated charging current, determining a first strategy as the charging strategy of the secondary battery, wherein the first strategy includes at least one of the following: reducing a charging overvoltage protection threshold, reducing a charging over-temperature protection threshold, increasing a charging low-temperature protection threshold, and disconnecting a charging loop after a charging duration reaches a first duration threshold.

6. The method of claim 1 or 2, wherein, The discharging parameter includes a discharging current, and the determination of the charging strategy or the discharging strategy of the secondary battery based on the charging parameter or the discharging parameter includes: in response to a continuous duration of the discharging current being greater than a rated discharging current of the secondary battery being greater than a second duration threshold, prohibiting the discharging of the secondary battery; or, in response to the continuous duration not being greater than the second duration threshold, determining a second strategy as the discharging strategy of the secondary battery, and sending a third instruction to an electronic device connected to a battery management system, the third instruction being used to instruct to disable the external power consumption device, and to instruct whether the secondary battery is stolen; wherein the second strategy includes at least one of the following: increasing an under-voltage protection threshold, reducing a discharging over-temperature protection threshold, and disconnecting a discharging loop after a discharging duration reaches a third duration threshold.

7. The method of claim 2, wherein, The method further includes: in response to the adjusted target value not being greater than the first threshold, obtaining a matching parameter of the secondary battery and the external power consumption device, the matching parameter including a shaking amount of the secondary battery in a battery compartment of the external power consumption device, and / or a target distance between the secondary battery and the battery compartment; in response to the matching parameter satisfying an alarm condition, sending a third instruction to an electronic device connected to a battery management system, the third instruction being used to instruct to disable the external power consumption device, and to instruct whether the secondary battery is stolen.

8. The method of claim 1, wherein, The method further includes: in response to the first encoded information matching the second encoded information, adjusting a target value, the target value being used to indicate a cumulative number of mismatches between the secondary battery and the external target device; allowing the secondary battery to be charged and / or discharged; sending a fourth instruction to an electronic device connected to a battery management system, the fourth instruction being used to instruct that the secondary battery and the external target device are successfully matched.

9. A secondary battery management device characterized by comprising: The device includes: an obtaining module, configured to obtain first encoded information of a secondary battery and second encoded information of an external target device when the secondary battery is charged or discharged, wherein the external target device is configured to be an external power consumption device where the secondary battery is located, or an external charging device that charges the secondary battery; The acquisition module is further configured to acquire the charging parameters of the secondary battery during charging or the discharge parameters of the secondary battery during discharging in response to a mismatch between the first encoded information and the second encoded information. The determining module is used to determine the charging strategy or discharging strategy of the secondary battery based on the charging parameters or discharging parameters. The acquisition module is further configured to, in response to a mismatch between the first encoding information and the second encoding information, acquire the first model information of the secondary battery in the first encoding information and the second model information of the external target device in the second encoding information; The determining module is further configured to, in the case that the external target device is an external power-consuming device, control the secondary battery to continue discharging in response to the matching of the first model information and the second model information.

10. A battery management system, characterized by, The battery management system includes: a processor and a memory storing computer program instructions; When the processor executes the computer program instructions, it implements the secondary battery management method as described in any one of claims 1-8.

11. A computer program product, characterised in that, The program product is stored in a non-volatile storage medium, and the program product is executed by at least one processor to implement the steps of the secondary battery management method as described in any one of claims 1-8.

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