Charging control method and charger

Abstract

Provided in the present application are a charging control method and a charger. The charging control method is applied to a charger and a charging system, the charging system comprising a battery pack and the charger, wherein the charger is configured to connect to the battery pack and charge the battery pack. The charging control method comprises: a charger acquiring charging information parameters of a battery pack, and determining, on the basis of the charging information parameters, a charging strategy for charging the battery pack; and on the basis of the charging strategy, charging the battery pack, wherein the charging information parameters include at least one of a required voltage, a required current and temperature information. The present application can effectively improve the compatibility of chargers with different battery packs.

Description

A charging control method and charger Technical Field

[0001] This application relates to the field of charging control technology, and in particular to a charging control method and a charger. Background Technology

[0002] With continuous breakthroughs and development in battery technology, battery packs have become widely used in various fields due to their advantages such as high operating voltage, high specific energy, long cycle life, and high portability. Correspondingly, chargers used to charge these battery packs are also widely used. However, in related technologies, the charging strategies of chargers are relatively fixed. When users need to charge battery packs of different specifications, different chargers must be used, resulting in low compatibility between chargers and different battery packs. Summary of the Invention

[0003] In view of the shortcomings of the prior art, the purpose of this application is to provide a charging control method and charger that can effectively improve the charger's compatibility with different battery packs.

[0004] In a first aspect, this application provides a charging control method applied to a charger, the charger being used to connect to a battery pack and charge the battery pack, the charging control method comprising:

[0005] The charger acquires the charging information parameters of the battery pack and determines a charging strategy for charging the battery pack based on the charging information parameters.

[0006] The battery pack is charged according to the charging strategy described above;

[0007] The charging information parameters include at least one of the following: required voltage, required current, and temperature.

[0008] In one embodiment, the charging strategy includes at least one of charger output current, charger output voltage, and stopping charging.

[0009] In one embodiment, the charger acquires charging information parameters of the battery pack, including:

[0010] The charger acquires the charging information parameters sent by the battery pack.

[0011] In one embodiment, the charger acquires charging information parameters of the battery pack, including:

[0012] The charger acquires the status parameters of the battery pack and determines the charging information parameters based on the status parameters;

[0013] The status parameters include at least one of the current charging current, current charging voltage, and current temperature of the battery pack.

[0014] In one embodiment, the charger determines a charging strategy for charging the battery pack based on the charging information parameters, including:

[0015] The charger determines whether the charging information parameters of the battery pack meet preset charging limit conditions;

[0016] If the charging information parameters meet the preset charging restriction conditions, the charger charges the battery pack according to the charging information parameters;

[0017] If the charging information parameters do not meet the preset charging limit conditions, the charger determines the charging output parameters for charging the battery pack based on the preset charging limit conditions; the charging output parameters include at least one of the charger output current and the charger output voltage.

[0018] In one embodiment, the preset charging limitation conditions include: the required current of the battery pack is less than or equal to the maximum output current of the charger; and / or, the required voltage of the battery pack is less than or equal to the maximum output voltage of the charger;

[0019] If the charging information parameters of the battery pack meet the preset charging limit conditions, the charger charges the battery pack according to the required current and / or required voltage of the battery pack.

[0020] If the charging information parameters of the battery pack do not meet the preset charging limit conditions, the charger determines the charger output current and / or charger output voltage for charging the battery pack based on the charger's maximum output current and / or maximum output voltage.

[0021] In one embodiment, if the charging information parameters of the battery pack do not meet the preset charging limit conditions, the charger charges the battery pack with the maximum output current and / or the maximum output voltage.

[0022] In one embodiment, the charging information parameters also include the battery pack health status;

[0023] The charger determines a charging strategy for charging the battery pack based on the battery pack's health status.

[0024] In one embodiment, the charger determines a charging strategy for charging the battery pack based on the battery pack's health status, including:

[0025] The charger acquires the charging information parameters, which include the required current and the battery pack health status.

[0026] The charger determines the maximum charging current of the battery pack based on the battery pack's health status.

[0027] The charger determines whether the required current of the battery pack is greater than the maximum charging current;

[0028] If the required current of the battery pack is greater than the maximum charging current, the charger charges the battery pack according to the maximum charging current.

[0029] If the required current of the battery pack is less than or equal to the maximum charging current, the charger charges the battery pack according to the required current.

[0030] In one embodiment, the battery pack health status is configured as the ratio of the charging rate of the battery pack under preset current and preset voltage conditions to the charging rate of a healthy battery pack, wherein the charging rate of the healthy battery pack is a preset fixed value.

[0031] In one embodiment, the charging information parameters further include charging anomaly information;

[0032] The charger acquires charging abnormality information of the battery pack and performs charging safety control based on the charging abnormality information;

[0033] The charging safety control includes at least one of stopping charging, reducing charging current, and reducing charging voltage.

[0034] In one embodiment, the charging control method further includes:

[0035] The charger receives the status parameters of the battery pack and determines whether there is a charging abnormality based on the status parameters;

[0036] If the charging abnormality is detected, the charger will perform charging safety control.

[0037] The status parameters include at least one of the current charging current, current charging voltage, and current temperature of the battery pack.

[0038] The charging safety control includes at least one of stopping charging, reducing charging current, and reducing charging voltage.

[0039] In one embodiment, the charging control method further includes:

[0040] The charger obtains the current power status of the battery pack, which includes a fully charged state and a partially charged state.

[0041] The charger stops charging the battery pack when the battery pack is currently fully charged.

[0042] The charger charges the battery pack according to the charging strategy, based on the fact that the battery pack is not fully charged at present.

[0043] In one embodiment, the charger obtains the current power status of the battery pack, including:

[0044] The charger acquires an LED display device control signal, which is used to control the LED display device to display the power status of the battery pack. The LED display device control signal includes a full charge status signal and a non-full charge status signal.

[0045] The charger stops charging the battery pack based on the control signal from the LED display device indicating a full charge status.

[0046] The charger charges the battery pack according to the charging strategy based on the control signal of the LED display device indicating that it is not fully charged.

[0047] In one embodiment, the charger acquires charging information parameters of the battery pack, including:

[0048] The charger acquires the type flag signal of the battery pack and identifies whether the battery pack has the charging information parameters based on the type flag signal;

[0049] When the battery pack has the charging information parameters, the charger acquires the charging information parameters;

[0050] When the battery pack does not have the charging information parameter, the charger obtains the status information of the battery pack and determines the charging information parameter based on the status information;

[0051] The status parameters include at least one of the current charging current, current charging voltage, and current temperature of the battery pack.

[0052] In one embodiment, the charger is provided with a wired communication module and / or a wireless communication module;

[0053] The charger communicates with the battery pack via wired and / or wireless communication.

[0054] Secondly, this application provides a charging control method applied to a charging system, the charging system including a battery pack and a charger for charging the battery pack, the charging control method including:

[0055] The battery pack or the charger determines the charging information parameters of the battery pack;

[0056] The charger acquires the charging information parameters of the battery pack and determines a charging strategy for charging the battery pack based on the charging information parameters.

[0057] The charger charges the battery pack according to the charging strategy;

[0058] The charging information parameters include at least one of the following: required voltage, required current, and temperature.

[0059] Thirdly, this application provides a charger, comprising:

[0060] A battery pack interface for connecting a battery pack and charging the battery pack;

[0061] A charging circuit module is used to convert electrical energy supplied by the power source into DC power required by the battery pack.

[0062] A communication module is used to communicate with the battery pack to exchange data.

[0063] The control module is configured as follows:

[0064] Obtain the charging information parameters of the battery pack, and determine the charging strategy for charging the battery pack based on the charging information parameters;

[0065] The charging circuit module is controlled to charge the battery pack according to the charging strategy.

[0066] The charging information parameters include at least one of the following: required voltage, required current, and temperature.

[0067] The charging strategy includes at least one of the following: charger output current, charger output voltage, and stopping charging.

[0068] In one embodiment, the communication module includes a wired communication module and / or a wireless communication module.

[0069] In one embodiment, the charger is connected to an external power source to charge the battery pack;

[0070] Alternatively, the charger may include an energy storage module for charging the battery pack.

[0071] Compared with the prior art, this application has the following advantages: it can effectively improve the compatibility of the charger with different battery packs.

[0072] Attached Figure Description

[0073] Figure 1 is a flowchart of a charging control method according to an embodiment of this application;

[0074] Figure 2 is a schematic electrical block diagram of a charging system according to an embodiment of this application;

[0075] Figure 3 is a schematic electrical block diagram of a charging system according to another embodiment of this application;

[0076] Figure 4 is a flowchart of a charging control method according to another embodiment of this application;

[0077] Figure 5 is a flowchart of a charging control method according to another embodiment of this application;

[0078] Figure 6 is a flowchart of a charging control method according to a second embodiment of this application;

[0079] Figure 7 is a schematic electrical block diagram of a charging system according to another embodiment of this application;

[0080] Figure 8 is a flowchart of a charging control method according to another embodiment of this application;

[0081] Figure 9 is a schematic electrical block diagram of a charger according to an embodiment of this application;

[0082] Figure 10 is a flowchart of a charging control method according to three embodiments of the present application;

[0083] Figure 11 is a schematic electrical block diagram of a charging system according to a second embodiment of this application;

[0084] Figure 12 is a flowchart of a charging control method according to three embodiments of the present application;

[0085] Figure 13 is a flowchart of a charging control method according to a fourth embodiment of this application;

[0086] Figure 14 is a schematic electrical block diagram of a charging system according to three embodiments of this application.

[0087] Detailed Implementation

[0088] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to limit the application. For example, terms such as "upper," "lower," "front," and "rear" that indicate orientation or positional relationship are based solely on the orientation or positional relationship shown in the accompanying drawings and are used only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the device / component referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the application.

[0089] In some scenarios, chargers can only charge battery packs of specific specifications, resulting in poor compatibility. This forces users to equip themselves with different chargers for various battery packs, leading to high usage costs and inconvenience when traveling for work.

[0090] To address the aforementioned problems, this application provides a charging control method that effectively improves the charger's compatibility with different battery packs. Referring to Figure 1, a charging control method according to an embodiment of this application is applied to a charger used to connect to and charge a battery pack. The charging control method includes: step S11, the charger acquiring charging information parameters of the battery pack; step S12, the charger determining a charging strategy for charging the battery pack based on the charging information parameters; and step S13, the charger charging the battery pack according to the charging strategy. The charging information parameters include at least one of the following: required voltage (also known as required charging voltage), required current (also known as required charging current), and temperature information.

[0091] The charging control method in this embodiment determines the charging strategy for the battery pack based on the charging information parameters of the battery pack. The charger can adjust its output according to the charging information parameters of the battery pack. On the one hand, the charger can charge battery packs of different specifications, improving the charger's compatibility with different battery packs. On the other hand, by determining the charging strategy based on the charging information parameters of the battery pack, rather than directly charging based on the charging information parameters of the battery pack, the charger can further judge the charging safety by re-evaluating the charging information parameters of the battery pack, which can further improve charging safety.

[0092] Furthermore, the temperature information includes the current temperature of the battery pack. The charging strategy includes at least one of the following: charger output current, charger output voltage, and stopping charging. It can be understood that the charger determines the current or voltage to charge the battery pack, or to stop charging in a fully charged or abnormal state, based on the battery pack's required current or voltage and the current temperature.

[0093] Referring to Figure 2, the charger is connected to a power source to charge the battery pack. The power source can be an external power source (also known as the power grid) or the charger's own energy storage module. The energy storage module is charged by the external power source, and then the energy storage module charges the battery pack.

[0094] As an example, referring to Figure 3, the charger 10 includes a first controller 11 and a charging circuit 12, wherein the first controller 11 is connected to the charging circuit 12. The first controller implements the charging control method described above, and the charging circuit converts the electrical energy provided by the power source into DC power required by the battery pack 20. After determining the charging strategy, the first controller controls the charging circuit to charge the battery pack according to the charging strategy. The battery pack 20 includes a second controller 21 and a battery module 22, wherein the second controller 21 is connected to the battery module 22. Of course, in other embodiments, the battery pack 20 may not include the second controller 21, or the second controller 21 of the battery pack 20 may not have computing functions. The second controller of the battery pack is used to determine the charging information parameters or status parameters of the battery pack.

[0095] In some embodiments, step S11, where the charger obtains the charging information parameters of the battery pack, includes: the charger obtaining the charging information parameters sent by the battery pack. It can be understood that in this embodiment, the charging information parameters are determined by the battery pack, and the charger directly obtains the charging information parameters sent by the battery pack through communication with the battery pack, enabling the charger to match a battery pack that can determine its own charging information parameters.

[0096] In some embodiments, step S11, where the charger acquires charging information parameters of the battery pack, includes: the charger acquiring state parameters of the battery pack and determining charging information parameters based on the state parameters; wherein, the state parameters include at least one of the battery pack's current charging current (also known as current input current), current charging voltage (also known as current input voltage), and current temperature. It can be understood that in this embodiment, the charging information parameters are determined by the charger, which determines the charging information parameters based on the acquired state parameters of the battery pack, enabling the charger to match battery packs that cannot determine their own charging information parameters.

[0097] In some embodiments, step S11, where the charger acquires the charging information parameters of the battery pack, includes: the charger acquiring a type flag signal of the battery pack and identifying whether the battery pack has charging information parameters based on the type flag signal; when the battery pack has charging information parameters, the charger acquires the charging information parameters; when the battery pack does not have charging information parameters, the charger acquires the status information of the battery pack and determines the charging information parameters based on the status information; wherein, the status parameters include at least one of the current charging current, current charging voltage, and current temperature of the battery pack. As an example, referring to FIG4, the type flag signal of the battery pack includes a first pre-stored signal and a second pre-stored signal, the first pre-stored signal being 0 and the second pre-stored signal being 1, where 0 indicates that the battery pack has no charging information parameters and 1 indicates that the battery pack has charging information parameters. It can be understood that this embodiment can match both battery packs that can determine their own charging information parameters and battery packs that cannot determine their own charging information parameters.

[0098] Further, referring to Figure 5, step S12, in which the charger determines the charging strategy for charging the battery pack based on the charging information parameters, includes: the charger determining whether the charging information parameters of the battery pack meet preset charging restrictions; if the charging information parameters meet the preset charging restrictions, the charger charges the battery pack according to the charging information parameters; if the charging information parameters do not meet the preset charging restrictions, the charger determines the charging output parameters for charging the battery pack based on the preset charging restrictions; the charging output parameters include at least one of the charger output current and the charger output voltage.

[0099] The preset charging limitations include: the battery pack's required current is less than or equal to the charger's maximum output current; and / or, the battery pack's required voltage is less than or equal to the charger's maximum output voltage. If the battery pack's charging information parameters meet the preset charging limitations, the charger charges the battery pack according to its required current and / or required voltage. If the battery pack's charging information parameters do not meet the preset charging limitations, the charger determines its output current and / or output voltage for charging the battery pack based on its maximum output current and / or maximum output voltage. In one specific embodiment, if the battery pack's charging information parameters do not meet the preset charging limitations, the charger charges the battery pack with its maximum output current and / or maximum output voltage; that is, the charger determines its maximum output current and / or maximum output voltage as its output current and / or output voltage.

[0100] For example, the charging information parameters include the required current and the required voltage; the preset charging limit conditions include: the battery pack's required current is less than or equal to the charger's maximum output current, and the battery pack's required voltage is less than or equal to the charger's maximum output voltage. For example, the charger's maximum output current is 10A and its maximum output voltage is 40V; when the battery pack's required current is 5A and its required voltage is 20V, the preset charging limit conditions are met, and the charger charges the battery pack according to the battery pack's required current of 5A and required voltage of 20V; when the battery pack's required current is 12A and required voltage is 60V, the preset charging limit conditions are not met, and the charger charges the battery pack according to the charger's maximum output current of 10A and maximum output voltage of 40V.

[0101] In some embodiments, the charging information parameters further include the battery pack health status; the charger determines a charging strategy for charging the battery pack based on the battery pack health status. Specifically, referring to Figure 6, the charger determines a charging strategy for charging the battery pack based on the battery pack health status, including: the charger acquiring charging information parameters, which include the required current and the battery pack health status; the charger determining the maximum charging current (also known as the maximum input current) of the battery pack based on the battery pack health status; the charger determining whether the required current of the battery pack is greater than the maximum charging current; if the required current of the battery pack is greater than the maximum charging current, the charger charges the battery pack according to the maximum charging current; if the required current of the battery pack is less than or equal to the maximum charging current, the charger charges the battery pack according to the required current.

[0102] For example, if the charger obtains a current requirement of 10A for the battery pack, and the current battery pack health level is 70%, and the maximum charging current corresponding to this battery pack health level is 9A, then the current requirement of 10A is greater than the maximum charging current of 9A, and the charger charges the battery pack according to the maximum charging current of 9A. If the current battery pack health level is 100%, and the maximum charging current corresponding to this battery pack health level is 12A, then the current requirement of 10A is less than the maximum charging current of 12A, and the charger charges the battery pack according to the current requirement of 10A.

[0103] In this embodiment, the charger 10 can determine the corresponding maximum charging current of the battery pack based on the battery pack's health status. When the battery pack's required current is greater than the maximum charging current of the battery pack corresponding to the current battery pack's health status, the charger 10 charges the battery pack according to the maximum charging current of the battery pack, thus avoiding damage to the battery pack caused by excessive charging current.

[0104] In one embodiment, the battery pack health status is configured as the ratio of the charging rate of the battery pack under preset current and preset voltage conditions to the charging rate of a healthy battery pack, wherein the charging rate of the healthy battery pack is a preset fixed value. It should be noted that the charging rate of a healthy battery pack is the charging rate of a battery pack of the same specifications under ideal conditions without degradation, under continuous charging conditions of preset current and preset voltage.

[0105] For example, the preset current condition is the rated charging current of the battery pack, and the preset voltage condition is a preset voltage range. The charging rate V1 and the healthy battery pack charging rate V0 of the battery pack 20 under continuous charging at the rated charging current and within the preset voltage range are obtained. For example, if the charging rate of the battery pack from 40V to 58V under a rated charging current of 10A is V1, then the current battery pack health status is V1 / V0. It should be noted that the settings of the preset current and preset voltage conditions are not limited to these and can be determined according to the specific application environment, all of which are within the scope of protection of this application.

[0106] In some embodiments, the charging information parameters further include charging anomaly information; the charger acquires the charging anomaly information of the battery pack and performs charging safety control based on the charging anomaly information; the charging safety control includes at least one of stopping charging, reducing charging current, and reducing charging voltage. Exemplarily, the charging anomaly information includes overcurrent, overvoltage, overtemperature, abnormal charging speed, and abnormal charging interruption.

[0107] Furthermore, in some embodiments, the battery pack determines charging abnormality information and sends it to the charger. The charger receives the charging abnormality information sent by the battery pack and performs charging safety control based on the charging abnormality information. It is understood that in this embodiment, the charger can be matched with a battery pack capable of determining charging abnormality information itself and perform corresponding safety controls to prevent abnormal charging from damaging the battery pack. In other embodiments, the charger receives the status parameters of the battery pack and determines whether a charging abnormality exists based on the status parameters. If a charging abnormality exists, the charger performs charging safety control. The status parameters include at least one of the battery pack's current charging current, current charging voltage, and current temperature. It is understood that in this embodiment, the charger can be matched with a battery pack that cannot determine charging abnormality information itself, determine whether a charging abnormality exists based on the battery pack's status parameters, and perform corresponding safety controls to prevent abnormal charging from damaging the battery pack. Specifically, the battery pack's current charging current, current charging voltage, and current temperature can be used to determine whether the battery pack has problems such as overcurrent, overvoltage, overtemperature, abnormal charging speed, or abnormal charging interruption. When a charging abnormality is determined to exist, the charger can control to stop charging, reduce the charging current, or reduce the charging voltage, etc., according to the specific abnormality type. Of course, the charging control methods of the two embodiments described above can be combined so that the charger can be matched with both battery packs that can determine charging abnormality information on their own and battery packs that cannot determine charging abnormality information on their own.

[0108] The charger can perform charging safety control based on the charging abnormality of the battery pack, which can effectively improve charging safety. Especially for battery packs that do not have their own control switch, the charger can obtain charging abnormality information and directly perform charging safety control, which can prevent the battery pack from being damaged or having its lifespan reduced due to charging in an abnormal state.

[0109] In some embodiments, the charging information parameters further include the current power status of the battery pack, and the charging control method further includes: the charger acquiring the current power status of the battery pack, the current power status of the battery pack including a fully charged state and a partially charged state; the charger stopping charging the battery pack based on the current power status of the battery pack being fully charged; and the charger charging the battery pack according to a charging strategy based on the current power status of the battery pack being partially charged.

[0110] Furthermore, the charger obtains the current power status of the battery pack, including: the charger obtaining an LED display device control signal, the LED display device control signal being used to control the LED display device to display the power status of the battery pack, the LED display device control signal including a full charge status signal and a non-full charge status signal; the charger stopping charging the battery pack based on the LED display device control signal being a full charge status signal; and the charger charging the battery pack according to a charging strategy based on the LED display device control signal being a non-full charge status signal.

[0111] Specifically, referring to Figure 7, the charger also includes an LED display device. Exemplarily, the LED display device can be an LED light used to display the battery pack's power status, including a lighting mode for when the power level is 100% (e.g., green, full charge, etc.) and another lighting mode for when the power level is less than 100% (e.g., yellow, not fully charged, etc.). The charger controls the LED display device to display the battery pack's power status via an LED display device control signal. For example, when the power level is 100%, the LED display device control signal is set to a high-level signal; when the power level is less than 100%, the LED display device control signal is set to a low-level signal.

[0112] Additionally, when the charger detects a charging abnormality, such as no current or abnormal current and voltage during charging, the LED display device will prioritize displaying a fault indicator lighting mode (e.g., red light, flashing light) according to the charger's own needs. In other words, the control signals received by the LED display device from the charger can also include charging abnormality signals.

[0113] It is understandable that the charger uses the LED display device control signal as a charging information parameter to characterize the current power status of the battery pack. In other words, the charger uses the LED display device control signal as part of the logic to determine the charging strategy. This allows the charger to utilize the signal channel of the LED display device to increase the channels for obtaining the charging strategy without increasing additional hardware costs, thereby improving the rationality of the charging strategy, especially when dealing with situations such as full charge or charging abnormalities.

[0114] Furthermore, the charger communicates with the battery pack via wired and / or wireless communication. Specifically, the charger is equipped with a wired communication module and / or a wireless communication module. For example, the wired communication module can be configured as a serial communication module, a CAN communication module, an Ethernet communication module, etc.; the wireless communication module can be configured as a Bluetooth module, an NFC module, a 4G module, a 5G module, etc.

[0115] To address the issue of poor charger compatibility with different battery packs, referring to Figure 8, this application also provides a charging control method applied to a charging system 100. The charging system 100 includes a battery pack 20 and a charger 10 for charging the battery pack 20. The charging control method includes: step S21, where the battery pack or charger determines charging information parameters of the battery pack; step S22, where the charger acquires the charging information parameters of the battery pack; step S23, where the charger determines a charging strategy for charging the battery pack based on the charging information parameters; and step S24, where the charger charges the battery pack according to the charging strategy. The charging information parameters include at least one of demand voltage, demand current, and temperature information.

[0116] The charging control method of this embodiment is applied to the charging system. The charging control method of any of the preceding embodiments applied to the charger can be combined with this embodiment, and will not be described again here.

[0117] To address the issue of poor charger compatibility with different battery packs, this application also provides an electronic device, including a memory and a processor. The memory stores a computer program executable by the processor, and the processor executes the computer program to implement the aforementioned charging control method.

[0118] To address the aforementioned problems, this application also provides a computer-readable storage medium storing processor-executable program code configured to enable the processor to implement the aforementioned charging control method when executing the program code.

[0119] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working process of the system and apparatus described above can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0120] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0121] To address the issue of poor charger compatibility with different battery packs, referring to Figure 9, this application also provides a charger 10, including a battery pack interface 110, a charging circuit module 120, a communication module 130, and a control module 140. The battery pack interface 110 is used to connect to a battery pack 20 and charge the battery pack 20. The charging circuit module 120 is used to convert electrical energy supplied by a power source into DC power required by the battery pack 20. The communication module 130 is used to communicate with the battery pack 20 for data exchange. The control module 140 is configured to: acquire charging information parameters of the battery pack 20, and determine a charging strategy for charging the battery pack 20 based on the charging information parameters; and control the charging circuit module 120 to charge the battery pack 20 according to the charging strategy. The charging information parameters include at least one of required voltage, required current, and temperature information; the charging strategy includes at least one of charger output current, charger output voltage, and charging stop.

[0122] Furthermore, the communication module 130 includes a wired communication module and / or a wireless communication module. For example, the wired communication module can be configured as a serial communication module, a CAN communication module, an Ethernet communication module, etc.; the wireless communication module can be configured as a Bluetooth module, an NFC module, a 4G module, a 5G module, etc.

[0123] Referring to Figure 2, the charger is connected to a power source to charge the battery pack. The power source can be an external power source or the charger's own energy storage module. In some embodiments, the charger 10 is connected to an external power source to charge the battery pack 20. In other embodiments, the charger 10 includes an energy storage module to charge the battery pack 20 via the energy storage module.

[0124] As an example, referring to Figure 3, the charger 10 includes a first controller 11 and a charging circuit 12, wherein the first controller 11 is connected to the charging circuit 12. The control module 140 includes the first controller 11, which implements the charging control method described above. The charging current module 120 includes the charging circuit 12, which converts the electrical energy supplied by the power source into DC power required by the battery pack 20. After determining the charging strategy, the first controller 11 controls the charging circuit 12 to charge the battery pack 20 according to the charging strategy. The battery pack 20 includes a second controller 21 and a battery module 22, wherein the second controller 21 is connected to the battery module 22. Of course, in other embodiments, the battery pack 20 may not include the second controller 21, or the second controller 21 of the battery pack 20 may not have computing functions. The second controller 21 of the battery pack 20 is used to determine the charging information parameters or status parameters of the battery pack.

[0125] Referring to Figure 10, a charging control method provided in an embodiment of this application is applied to the charging system 100 shown in Figure 2. The charging system 100 includes a charger 10 and a battery pack 20, wherein the charger 10 is electrically connected between a power source and the battery pack 20. Referring to Figure 3, the charger 10 includes a first controller 11 and a charging circuit 12, wherein the first controller 11 is connected to the charging circuit 12, and the charging circuit 12 is electrically connected between the power source and the battery pack 20. The battery pack 20 includes a second controller 21 and a battery module 22, wherein the second controller 21 is connected to the battery module 22, and the battery module 22 is used to connect to the charger 10. The charging control method of the charging system 100 specifically includes the following steps. Depending on different requirements, the order of some steps in this flowchart can be changed, and some steps can be omitted.

[0126] Step S31: Determine the charging information parameters based on the battery pack's status parameters.

[0127] In some embodiments of this application, when the battery pack 20 includes a second controller 21 and the second controller 21 has a computing function, the second controller 21 determines the charging information parameters of the battery pack 20 based on the state parameters of the battery pack 20.

[0128] In some embodiments of this application, when the battery pack 20 does not include the second controller 21, or when the second controller 21 in the battery pack 20 does not have computing function, the first controller 11 determines the charging information parameters of the battery pack 20 based on the state parameters of the battery pack 20.

[0129] Specifically, the status parameters include at least one of the following: the current charging current of the battery pack 20, the current charging voltage, the battery pack charge level, and the battery pack temperature. The charging information parameters include at least one of the following: the battery pack's required current, required voltage, the LED display device control signal, and the battery pack's health status.

[0130] It should be noted that the method for determining the charging information parameters of the battery pack 20 based on its state parameters will be described in detail later, and will not be repeated here to avoid repetition.

[0131] Step S32: The charger acquires charging information parameters, including LED display device control signals.

[0132] Specifically, the first controller 11 in the charger 10 acquires the charging information parameters of the battery pack 20, that is, the first controller 11 acquires at least one of the battery pack 20's required current, required voltage, LED display device control signal, and battery pack health status.

[0133] Step S33: The charger determines the charging strategy of the battery pack based on the charging information parameters.

[0134] As shown in Figure 2, after acquiring the charging information parameters, the first controller 11 in the charger 10 determines the charging strategy of the battery pack 20 based on the charging information parameters. Specifically, the charging strategy includes at least one of the charging duration of the charger 10, the charger output current, and the charger output voltage. In practical applications, it is not limited to these and can be determined according to the specific application environment, all of which are within the scope of protection of this application.

[0135] It should be noted that how the charger 10 determines the charging strategy of the battery pack 20 based on the charging information parameters will be described in detail later, and will not be repeated here to avoid repetition.

[0136] Step S34: The charger charges the battery pack according to the charging strategy.

[0137] As shown in Figure 3, the first controller 11 controls the charging circuit 12 to charge the battery pack 20 according to the charging strategy. In practical applications, the charging circuit 12 can be an inverter circuit, so that the first controller 11 can control the turn-off of each switch in the inverter circuit according to the charging strategy to charge the battery pack 20. In practical applications, it is not limited to this, but depends on the specific application environment, and all are within the protection scope of this application.

[0138] The charging control method provided in this embodiment determines the charging information parameters of the battery pack 20 based on the state parameters of the battery pack 20, and then determines the charging strategy of the battery pack 20 based on the charging information parameters of the battery pack 20 by the charger 10. This enables the charger 10 to charge the battery pack 20 according to the charging strategy, thereby enabling the charger 10 to charge different types of battery packs 20 and improving the compatibility between the charger 10 and the battery pack 20.

[0139] Please refer to Figure 4, which is a schematic diagram of the specific steps of step S31 in the charging control method shown in Figure 10.

[0140] This embodiment is a detailed explanation of step S31 in the foregoing embodiment, further illustrating how to determine the charging information parameters of the battery pack 20 based on the state parameters of the battery pack 20. Specifically, it includes the following steps:

[0141] Step S41: The charger acquires the battery pack type flag signal.

[0142] In practical applications, the first controller 11 stores a first pre-stored signal and a second pre-stored signal in advance. Optionally, the first pre-stored signal is a high-level signal and the second pre-stored signal is a low-level signal.

[0143] In some embodiments of this application, after the first controller 11 obtains the type flag signal of the battery pack 20, if the type flag signal obtained by the first controller 11 is a high-level signal, it indicates that the battery pack 20 does not include the second controller 21, or the second controller 21 in the battery pack 20 does not have a calculation function, and step S42 is executed; if the type flag signal obtained by the first controller 11 is a low-level signal, it indicates that the battery pack 20 includes the second controller 21, and the second controller 21 has a calculation function, and step S43 is executed.

[0144] Step S42: The charger determines the charging information parameters based on the status parameters of the battery pack.

[0145] When the type flag signal is the first pre-stored signal, the first controller 11 in the charger 10 determines the charging information parameters of the battery pack 20 based on the state parameters of the battery pack 20.

[0146] In some embodiments of this application, if the status parameters include the current charging current and battery pack temperature of the battery pack 20, and the charging information parameters include the battery pack demand current, the first controller 11 determines whether the battery pack temperature is within the over-temperature protection range, so that when the battery pack temperature is within the over-temperature protection range, the battery pack demand current is set to the maximum charging current corresponding to the current battery pack temperature.

[0147] In some embodiments of this application, if the status parameter includes the current charging voltage of the battery pack 20 and the charging information parameter includes the battery pack demand voltage, the first controller 11 determines whether the current charging voltage is within the overvoltage protection range, so that when the current charging voltage is within the overvoltage protection range, the battery pack demand voltage is set to the maximum input voltage of the battery pack 20.

[0148] In some embodiments of this application, as shown in FIG7, the charger 10 specifically shown also includes an LED display device 13.

[0149] Specifically, when the battery pack delivers normal current to the charger, the LED display will act as an indicator of the charging status, including a lighting mode for 100% charge (e.g., green, full charge) and a different lighting mode for less than 100% charge (e.g., yellow, not fully charged). However, when the charger detects an anomaly, such as no current or abnormal current and voltage during charging, the LED display will prioritize displaying a fault indicator lighting mode (e.g., red, flashing) according to the charger's own needs. When the LED display control signal is used as a charging information parameter, the status displayed on the charger's LED display can be incorporated into the logic for determining the charging strategy. This allows the existing LED display signal channel to be utilized, increasing the channels for obtaining charging strategies without adding extra hardware costs, thus improving the rationality of the charging strategy, especially in dealing with charging anomalies or full charge situations.

[0150] When the status parameters also include the battery pack power value, and the charging information parameters also include the LED display device control signal, the first controller 11 sets the LED status display parameters according to the battery pack power value, and correspondingly sets the LED display device control signal. Specifically, when the power value is 100%, the LED display device control signal can be set to a high-level signal, and when the power value is less than 100%, the LED display device control signal can be set to a low-level signal.

[0151] Step S43: The battery pack determines the charging information parameters based on the battery pack's status parameters.

[0152] When the type flag signal is the second pre-stored signal, the second controller 21 determines the charging information parameters of the battery pack 20 based on the state parameters of the battery pack 20.

[0153] In some embodiments of this application, if the status parameters include the current charging current and battery pack temperature of the battery pack 20, and the charging information parameters include the battery pack demand current, the second controller 21 determines whether the battery pack temperature is within the over-temperature protection range, so that when the battery pack temperature is within the over-temperature protection range, the battery pack demand current is set to the maximum charging current corresponding to the current battery pack temperature.

[0154] In some embodiments of this application, if the status parameter includes the current charging voltage of the battery pack 20 and the charging information parameter includes the battery pack demand voltage, the second controller 21 determines whether the current charging voltage is within the overvoltage protection range, so that when the current charging voltage is within the overvoltage protection range, the battery pack demand voltage is set to the maximum input voltage of the battery pack 20.

[0155] In some embodiments of this application, as shown in FIG7, the charger 10 further includes an LED display device 13. Specifically, when the status parameters include the battery pack power value and the charging information parameters include the LED display device control signal, the second controller 21 sets the LED status display parameters according to the battery pack power value. Specifically, when the battery pack power value is 100%, the LED display device control signal can be set to a high-level signal, and when the battery pack power value is less than 100%, the LED display device control signal can be set to a low-level signal.

[0156] In the charging control method described above, after the charger 10 obtains the type flag signal of the battery pack 20, when the type flag signal is a first pre-stored signal, the first controller 11 determines the charging information parameters based on the state parameters, and when the type flag signal is a second pre-stored signal, the second controller 21 determines the charging information parameters based on the state parameters. This reduces the workload of the first controller 11, enabling the charging control method to be compatible with different types of battery packs 20, and further improving the compatibility between the charger 10 and the battery pack 20.

[0157] Please refer to Figure 5, which is a schematic diagram of the specific steps of step S33 in the charging control method shown in Figure 1.

[0158] This embodiment is a detailed explanation of step S33 in the foregoing embodiment, further illustrating how the charger 10 determines the charging strategy of the battery pack 20 based on charging information parameters. Specifically, it includes the following steps:

[0159] Step S61: The charger determines whether the charging information parameters meet the preset charging limit conditions.

[0160] In practical applications, the charger 10 stores preset charging limits. Specifically, the preset charging conditions include at least one of the maximum output current and the maximum output voltage. In practical applications, these conditions are not limited to these and can be determined according to the specific application environment, all of which are within the scope of protection of this application.

[0161] Charger 10 determines whether the charging information parameters meet the preset charging limit conditions. If the charging information parameters do not meet the preset charging limit conditions, step S62 is executed; if the charging information parameters meet the preset charging limit conditions, step S63 is executed.

[0162] Step S62: The charger optimizes the charging information parameters according to the preset charging constraints, so as to determine the charging strategy based on the optimized charging information parameters.

[0163] If the charging information parameters do not meet the preset charging limit conditions, the charger 10 optimizes the charging information parameters according to the preset charging limit conditions, so as to determine the charging strategy of the battery pack 20 based on the optimized charging information parameters.

[0164] In some embodiments of this application, when the charging current of the battery pack 20 in the charging information parameters is greater than the maximum output current, the charger 10 determines the maximum output current as the charging information parameter of the battery pack 20, and determines the charging strategy of the battery pack 20 according to the maximum output current, that is, determines the maximum output current as the output current of the charging circuit 12, so as to prevent the charger 10 from being damaged by excessive output current.

[0165] In some embodiments of this application, when the charging voltage of the battery pack 20 in the charging information parameters is greater than the maximum output voltage, the charger 10 determines the maximum output voltage as the charging information parameter of the battery pack 20, and determines the charging strategy of the battery pack 20 according to the maximum output voltage, that is, determines the maximum output voltage as the output voltage of the charging circuit 12, so as to prevent the charger 10 from being damaged by excessive output voltage.

[0166] In some embodiments of this application, when the LED display device control signal in the charging information parameters is a high-level signal, the battery pack 20 is fully charged and does not need to be charged. The first controller 11 determines the stop-operation signal as the charging strategy for the battery pack 20. Specifically, when the LED display device control signal is a high-level signal, the first controller 11 outputs a stop-operation signal to the charging circuit 12 to control the charging circuit 12 to stop outputting and prevent the battery pack 20 from being overcharged.

[0167] Step S63: The charger determines the charging strategy based on the charging information parameters.

[0168] If the charging information parameters meet the preset charging limit conditions, the charger 10 determines the charging strategy of the battery pack 20 based on the charging information parameters of the battery pack 20.

[0169] In some embodiments of this application, when the charging voltage of the battery pack 20 in the charging information parameters is not greater than the maximum output voltage, and the charging current of the battery pack 20 is not greater than the maximum output current, and the LED display device control signal is a low-level signal, the charger 10 determines the charging strategy of the battery pack 20 based on the charging voltage and charging current of the battery pack 20. Specifically, the first controller 11 in the charger 10 determines that the charging voltage of the battery pack 20 is the output voltage of the charger 10, and the first controller 11 determines that the charging current of the battery pack 20 is the output current of the charger 10.

[0170] The charging control method provided in this embodiment optimizes the charging information parameters according to the preset charging limit conditions when the charging information parameters do not meet the preset charging limit conditions, so as to determine the charging strategy of the battery pack 20 based on the optimized charging information parameters; and determines the charging strategy of the battery pack 20 according to the charging information parameters of the battery pack 20 when the charging information parameters meet the preset charging limit conditions, so as to avoid damage to the charger 10 due to excessive output voltage or current, thereby improving the reliability of the charging system 100.

[0171] In practical applications, when the charging current of the battery pack 20 is greater than the maximum charging current corresponding to the current health status of the battery pack 20, it will increase the loss of the battery module 22 in the battery pack 20. Therefore, another embodiment of this application provides a flowchart of the steps of a charging control method. Please refer to Figure 6, which is a schematic diagram of the specific steps of step S33 in the charging control method shown in Figure 10.

[0172] This embodiment is a detailed explanation of step S33 in the foregoing embodiment, further illustrating how the charger 10 determines the charging strategy of the battery pack 20 based on charging information parameters. Specifically, it includes the following steps:

[0173] Step S71: The charger determines the maximum charging current of the battery pack based on the battery pack's health status.

[0174] Specifically, the charging information parameters include the current required by the battery pack and the battery pack health status. The first controller 11 determines the corresponding maximum charging current of the battery pack based on the current battery pack health status.

[0175] In practical applications, the first controller 11 pre-stores the maximum charging current of each battery pack corresponding to its health status. The specific maximum charging current of each battery pack corresponding to its health status can be obtained by actual testing. No specific limitation is made here, but it depends on the actual application environment. All of these are within the scope of protection of this application.

[0176] Step S72: The charger determines whether the current required by the battery pack is greater than the maximum charging current of the battery pack.

[0177] The first controller 11 in the charger 10 determines whether the current required by the battery pack is greater than the maximum charging current of the battery pack corresponding to the current battery pack health status. If the current required by the battery pack is greater than the maximum charging current of the battery pack, it means that the current required by the battery pack is too large. If the charger 10 outputs according to the required current, it will increase the loss of the battery pack 20. Therefore, step S73 is executed at this time; if the current required by the battery pack is not greater than the maximum charging current of the battery pack, step S74 is executed.

[0178] Step S73: The charger determines the charging strategy based on the maximum charging current of the battery pack.

[0179] When the current required by the battery pack is greater than the maximum charging current of the battery pack corresponding to the current battery pack health status, the first controller 11 determines the charging strategy based on the maximum charging current of the battery pack, that is, determines the maximum charging current of the battery pack as the charging strategy of the battery pack 20, so that the charger 10 can determine the charging strategy based on the maximum charging current of the battery pack corresponding to the current battery pack health status.

[0180] Optionally, referring to Figure 11, the charger 10 also includes a temperature acquisition device 14 connected to the first controller 11, which is used to acquire the operating ambient temperature of the charging circuit 12. In practical applications, the first controller 11 determines the charging strategy based on the current operating ambient temperature acquired by the temperature acquisition device 14 and the maximum charging current of the battery pack corresponding to the current battery pack health status.

[0181] Specifically, the first controller 11 determines whether the maximum charging current of the battery pack is greater than the maximum charging current corresponding to the current operating ambient temperature. When the maximum charging current of the battery pack is greater than the maximum charging current corresponding to the current operating ambient temperature, the first controller 11 determines the maximum charging current corresponding to the current operating ambient temperature as the charging strategy for the battery pack 20, so that the first controller 11 can control the charging circuit 12 to charge the battery pack 20 according to the maximum charging current corresponding to the current operating ambient temperature; when the maximum charging current of the battery pack is not greater than the maximum charging current corresponding to the current operating ambient temperature, the first controller 11 determines the maximum charging current of the battery pack as the charging strategy for the battery pack 20, so that the first controller 11 can control the charging circuit 12 to charge the battery pack 20 according to the maximum charging current of the battery pack. This avoids excessive current in the charger 10, which could cause the charger 10 to overheat and damage it.

[0182] Step S74: The charger determines the charging strategy based on the current required by the battery pack.

[0183] When the current required by the battery pack is not greater than the maximum charging current of the battery pack corresponding to the current health status of the battery pack, the first controller 11 in the charger 10 determines the charging strategy according to the current required by the battery pack, so that the charger 10 can determine the charging strategy according to the current required by the battery pack.

[0184] The charging control method provided in this embodiment determines the charging strategy based on the maximum charging current of the battery pack when the current required by the battery pack is greater than the maximum charging current of the battery pack corresponding to the current battery pack health status. This enables the charger 10 to charge the battery pack 20 according to the maximum charging current of the battery pack corresponding to the current battery pack health status, thereby avoiding excessive charging current of the battery pack 20 and increasing the loss of the battery module 22.

[0185] Please refer to Figure 12, which is a schematic diagram of the specific steps of step S31 in the charging control method shown in Figure 10.

[0186] This embodiment is a detailed explanation of step S31 in the foregoing embodiment, further illustrating how to determine the charging information parameters of the battery pack 20 based on the state parameters of the battery pack 20. Specifically, it includes the following steps:

[0187] Step S91: Obtain the charging rate of the battery pack and the charging rate of the healthy battery pack within the preset voltage range under the rated charging current.

[0188] This application obtains the charging rate V1 of battery pack 20 under continuous charging within a preset voltage range at the rated charging current and the charging rate V0 of a healthy battery pack under continuous charging. Specifically, a healthy battery pack is a battery pack 20 where the battery module 22 is depleted to zero under ideal conditions. In practical applications, the charging rate of a healthy battery pack under continuous charging within the preset voltage range is V0; the charging rate of battery pack 20 under continuous charging within the preset voltage range at the rated charging current is V1, for example, the charging rate V1 when battery pack 20 is continuously charged from 40V to 58V at a rated charging current of 10A. The specific preset voltage range and rated charging current values ​​are not limited to these and can be determined according to the specific application environment, all of which are within the scope of protection of this application.

[0189] Step S92: Calculate the ratio of the charging rate of the battery pack to the charging rate of the healthy battery pack.

[0190] Step S93: Determine the ratio as the battery health level.

[0191] Calculate the ratio of the charging rate V1 of battery pack 20 to the charging rate V0 of a healthy battery pack to determine the current battery health of battery pack 20.

[0192] The charging control method provided in this embodiment calculates the ratio of the charging rate V1 of the battery pack 20 to the charging rate V0 of the healthy battery pack to determine the battery health level. This allows the charger 10 to determine the corresponding maximum charging current of the battery pack based on the battery pack health level. When the current required by the battery pack is greater than the maximum charging current of the battery pack corresponding to the current battery pack health level, the charger 10 determines the charging strategy based on the maximum charging current of the battery pack, so that the charger 10 can charge the battery pack 20 according to the maximum charging current of the battery pack corresponding to the current battery pack health level, avoiding excessive charging current of the battery pack 20 from increasing the loss of the battery module 22.

[0193] Please refer to Figure 13, which is a schematic diagram of another specific step in step S31 of the charging control method shown in Figure 10. Prior to step S31, the charging control method provided in this application further includes the following steps:

[0194] Step S101: The charger receives the battery pack insertion signal.

[0195] Charger 10 receives the insertion signal from battery pack 20 to determine if battery pack 20 is connected to charger 10. Specifically, first controller 11 receives the insertion signal output by second controller 21 to determine if battery pack 20 is connected to charger 10. In practical applications, first controller 11 and second controller 21 can be connected via a COM (Communication) port. The corresponding insertion signal is the voltage of the COM port between first controller 11 and second controller 21. When the COM port voltage is high (5-12V), battery pack 20 is connected to charger 10; when the COM port voltage is low (less than 5V), battery pack 20 is not connected to charger 10.

[0196] In practical applications, based on the above embodiments, as shown in Figure 14, the second controller 21 in the battery pack 20 of this application embodiment is also used to connect with the electrical device. Specifically, the second controller 21 is also used to obtain the power consumption information parameters of the electrical device, so as to determine the power supply strategy of the battery pack 20 according to the power consumption information parameters of the electrical device, and then control the battery module 22 to supply power to the electrical device according to the power supply strategy, thereby enabling the battery pack 20 to supply power to different types of electrical devices, improving the compatibility between the battery pack 20 and the electrical device, and making the power supply method of the battery pack 20 more intelligent.

[0197] In some embodiments of this application, the second controller 21 is used to acquire the discharge rate S1 of the battery pack 20 under continuous discharge state and the discharge rate S0 of the healthy battery pack under continuous discharge state within a preset voltage range under rated charging current, and calculate the ratio of the discharge rate S1 of the battery pack 20 to the discharge rate S0 of the healthy battery pack, so as to determine the current battery health status of the battery pack 20. This enables the charger 10 to determine the corresponding maximum power supply current of the battery pack 20 based on the battery pack health status, and when the current required by the electrical device is greater than the maximum power supply current of the battery pack 20 corresponding to the current battery pack health status, the maximum power supply current of the battery pack 20 is determined as the power supply strategy of the battery pack 20, so as to avoid the battery pack 20's power supply current being too large and increasing the loss of the battery module 22.

[0198] Specifically, the preset voltage range is 40V to 55V. In practical applications, under the rated discharge current, the discharge rate of battery pack 20 under continuous discharge within the preset voltage range is S1, and the discharge rate of battery pack 20 under a rated charging current of 10A from 58V to 40V is S1. Within the preset voltage range, the discharge rate of a healthy battery pack under continuous discharge is S0, and the discharge rate of healthy battery pack 20 under a rated charging current of 10A from 58V to 40V is S0. The specific preset voltage range and rated discharge current values ​​are not limited to these and can be determined according to the specific application environment, all of which are within the scope of protection of this application.

[0199] Finally, it should be noted that the above-described embodiments are merely specific implementations of this application, used to illustrate the technical solutions of this application, and not to limit them. The scope of protection of this application is not limited thereto. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features, within the scope of the technology disclosed in this application. Such modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of protection of the claims.

Claims

1. A charging control method applied to a charger, the charger being used to connect to a battery pack and charge the battery pack, characterized in that, The charging control method includes: The charger acquires the charging information parameters of the battery pack and determines a charging strategy for charging the battery pack based on the charging information parameters. The battery pack is charged according to the charging strategy described above; The charging information parameters include at least one of the following: required voltage, required current, and temperature.

2. The charging control method according to claim 1, characterized in that, The charging strategy includes at least one of the following: charger output current, charger output voltage, and stopping charging.

3. The charging control method according to claim 1, characterized in that, The charger acquires charging information parameters of the battery pack, including: The charger acquires the charging information parameters sent by the battery pack.

4. The charging control method according to claim 1, characterized in that, The charger acquires charging information parameters of the battery pack, including: The charger acquires the status parameters of the battery pack and determines the charging information parameters based on the status parameters; The status parameters include at least one of the current charging current, current charging voltage, and current temperature of the battery pack.

5. The charging control method according to claim 1, characterized in that, The charger determines a charging strategy for charging the battery pack based on the charging information parameters, including: The charger determines whether the charging information parameters of the battery pack meet preset charging limit conditions; If the charging information parameters meet the preset charging restriction conditions, the charger charges the battery pack according to the charging information parameters; If the charging information parameters do not meet the preset charging limit conditions, the charger determines the charging output parameters for charging the battery pack based on the preset charging limit conditions; the charging output parameters include at least one of the charger output current and the charger output voltage.

6. The charging control method according to claim 1, characterized in that, The charging information parameters also include the battery pack health status; The charger determines a charging strategy for charging the battery pack based on the battery pack's health status.

7. The charging control method according to claim 6, characterized in that, The charger determines a charging strategy for charging the battery pack based on the battery pack's health status, including: The charger acquires the charging information parameters, which include the required current and the battery pack health status. The charger determines the maximum charging current of the battery pack based on the battery pack's health status. The charger determines whether the required current of the battery pack is greater than the maximum charging current; If the required current of the battery pack is greater than the maximum charging current, the charger charges the battery pack according to the maximum charging current. If the required current of the battery pack is less than or equal to the maximum charging current, the charger charges the battery pack according to the required current.

8. The charging control method according to claim 1, characterized in that, The charging information parameters also include charging anomaly information; The charger acquires charging abnormality information of the battery pack and performs charging safety control based on the charging abnormality information; The charging safety control includes at least one of stopping charging, reducing charging current, and reducing charging voltage.

9. A charging control method applied to a charging system, the charging system comprising a battery pack and a charger for charging the battery pack, characterized in that, The charging control method includes: The battery pack or the charger determines the charging information parameters of the battery pack; The charger acquires the charging information parameters of the battery pack and determines a charging strategy for charging the battery pack based on the charging information parameters. The charger charges the battery pack according to the charging strategy; The charging information parameters include at least one of the following: required voltage, required current, and temperature.

10. A charger, characterized in that, include: A battery pack interface for connecting a battery pack and charging the battery pack; A charging circuit module is used to convert electrical energy supplied by the power source into DC power required by the battery pack. A communication module is used to communicate with the battery pack to exchange data. The control module is configured as follows: Obtain the charging information parameters of the battery pack, and determine the charging strategy for charging the battery pack based on the charging information parameters; The charging circuit module is controlled to charge the battery pack according to the charging strategy. The charging information parameters include at least one of the following: required voltage, required current, and temperature. The charging strategy includes at least one of the following: charger output current, charger output voltage, and stopping charging.

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