Charging and discharging control method, energy storage equipment and storage medium

Abstract

The embodiment of the invention provides a charging and discharging control method, energy storage equipment and a storage medium, the charging and discharging control method is applied to the energy storage equipment, and the charging and discharging control method comprises the following steps: when electric connection with a detachable battery module is established, charging the detachable battery module; and when the mode switching event is triggered, stopping charging the detachable battery module, and taking electricity from the detachable battery module. According to the method, the charging and discharging mode between the energy storage equipment and the detachable battery module can be dynamically adjusted according to actual requirements, the problem that the application scene is limited is avoided, and the charging and discharging mode switching flexibility is improved.

Description

Technical Field

[0001] The present application belongs to the field of energy storage technology, and in particular relates to a charging and discharging control method, an energy storage device and a storage medium. Background Art

[0002] Battery packs can be used in various devices, especially energy storage devices. With the rise of energy storage devices, more and more forms of energy storage devices have appeared. Now there are pluggable power banks on energy storage devices. For example, there is a slot for the power bank on the host of the energy storage device. After the power bank is plugged in, it is charged through the energy storage device. When camping, users can not only directly use the socket of the energy storage device, but also unplug the power bank and use it to charge mobile phones, tablets and other devices.

[0003] However, this usage method has certain limitations and its application scenarios are restricted. Summary of the invention

[0004] The embodiments of the present application provide a charging and discharging control method, an energy storage device, and a storage medium, which can to a certain extent solve the problem that the current power bank is not flexible in use and has limited application scenarios.

[0005] A first aspect of an embodiment of the present application provides a charging and discharging control method, which is applied to an energy storage device, including: charging the detachable battery module when an electrical connection is established with the detachable battery module; and stopping charging the detachable battery module and drawing power from the detachable battery module when a mode switching event is triggered.

[0006] In the charge and discharge control method provided in the embodiment of the present application, when an electrical connection is established with the detachable battery module, the detachable battery module is charged; when a mode switching event is triggered, the charging of the detachable battery module is stopped and power is drawn from the detachable battery module. The above method can dynamically adjust the charge and discharge mode between the energy storage device and the detachable battery module according to actual needs, which can greatly expand the application scenarios of the detachable battery module and improve the flexibility of the charge and discharge mode switching.

[0007] The second aspect of the embodiment of the present application also provides a charging and discharging control device, which is applied to energy storage equipment, including: a charging control module, which is used to charge the removable battery module when an electrical connection is established with the removable battery module; and a power extraction control module, which is used to stop charging the removable battery module and extract power from the removable battery module when a mode switching event is triggered.

[0008] A third aspect of an embodiment of the present application further provides an energy storage device, the energy storage device comprising a processor and a memory, the processor being configured to implement any one of the above-mentioned charge and discharge control methods when executing a computer program stored in the memory.

[0009] A fourth aspect of an embodiment of the present application further provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, any one of the above-mentioned charge and discharge control methods is implemented. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0011] Figure 1 It is a device diagram of the information display method provided by an embodiment of the present application;

[0012] Figure 2 It is a flow chart of the charge and discharge control method provided in the embodiment of the present application;

[0013] Figure 3 It is an application scenario diagram of the charge and discharge control method provided in the embodiment of the present application;

[0014] Figure 4 is a flow chart for determining a target detachable battery module provided in an embodiment of the present application;

[0015] Figure 5 is a flowchart of obtaining the remaining power provided in an embodiment of the present application;

[0016] Figure 6 is a flow chart for determining a preset power condition provided in an embodiment of the present application;

[0017] Figure 7 This is a schematic diagram of electrical connection between a detachable battery module and an energy storage device provided in an embodiment of the present application;

[0018] Figure 8 This is another schematic diagram of electrical connection between a detachable battery module and an energy storage device provided in an embodiment of the present application;

[0019] Fig. 9 This is another schematic diagram of electrical connection between a detachable battery module and an energy storage device provided in an embodiment of the present application;

[0020] Fig.10 It is a schematic diagram of the structure of the charge and discharge control device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0021] In order to more clearly understand the above-mentioned purposes, features and advantages of the present application, the present application is described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0022] In the following description, many specific details are set forth to facilitate a full understanding of the present application. The described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0024] Currently, battery packs have a wide range of application scenarios and can be used in various types of equipment. For example, battery packs can be used in self-moving equipment such as automotive equipment, lawn mowing equipment, sweeping equipment, and cruise equipment, and can also be used in energy storage equipment such as mobile energy storage equipment and household energy storage equipment, or other electronic equipment that requires battery packs, without limitation. Battery packs can also be used as independent devices in conjunction with other equipment, for example, in conjunction with power conversion equipment, photovoltaic modules, etc., without limitation.

[0025] This application takes the application of a battery pack to an energy storage device as an example. In some embodiments, the energy storage device is provided with a slot for a detachable battery module, into which the detachable battery module can be inserted, and then the detachable battery module can be charged through the energy storage device. In other embodiments, the energy storage device is provided with a wall mount bracket / wall mount slot for supporting the detachable battery module, and the detachable battery module can be placed in the wall mount bracket / wall mount slot, and the detachable battery module can be charged through the energy storage device. In other embodiments, the energy storage device is provided with a base for supporting a detachable battery, and the detachable battery module can be placed in the base, and the detachable battery module can be charged through the energy storage device.

[0026] When camping or in other scenarios, users can not only directly use the socket / interface of the energy storage device, but also unplug the detachable battery module and use the detachable battery module to charge mobile phones, tablets and other devices.

[0027] Among them, the detachable battery module can be a power bank, a modular battery or other types of detachable battery products, which is not limited in this application.

[0028] However, in the combined form of the energy storage device and the removable battery module being electrically connected, the removable battery module will be charged through the energy storage device. This usage method has certain limitations and the application scenarios are restricted. For example, in some application scenarios (for example, when the remaining power of the energy storage device is low), the energy storage device needs to be used to power multiple devices. At this time, even if the removable battery module has power, it may be limited by the number of output interfaces and can only power some devices. It may even be limited by the output type and cannot power these devices at all, affecting the user experience.

[0029] In one scenario, the energy storage device is supplying power to two mobile phones, two laptops and a camping light, and the power of the energy storage device is about to run out. At this time, although the detachable battery module has a lot of remaining power, if the detachable battery module has only two output interfaces, it cannot meet the power needs of the five power-consuming devices.

[0030] In another scenario, the energy storage device is providing AC power to an electric oven, and the power of the energy storage device is about to run out. At this time, although the detachable battery module has a large amount of remaining power, if the detachable battery module can only output DC power, then the detachable battery module cannot meet the power demand of the electric oven.

[0031] In view of the above problems, an embodiment of the present application provides a charging and discharging control method, which can to a certain extent solve the problem that the current power bank is not flexible enough to use and has limited application scenarios.

[0032] Figure 1 is a device diagram of the information display method provided by the embodiment of the present application. Figure 1 As shown, the energy storage device 30 includes a memory 31 , at least one processor 32 , at least one communication bus 33 , and a battery pack (also referred to as an “internal battery module” in the embodiment of the present application) 34 .

[0033] Figure 1 The structure of the energy storage device shown does not constitute a limitation on the embodiments of the present application. The energy storage device 30 may also include more or less other hardware or software than shown, or a different arrangement of components. For example, the energy storage device 30 may also include multiple interfaces. For example, the first interface is used to connect to a load to power the load, and the second interface is used to connect to an independent battery pack (the embodiment of the present application may refer to a detachable battery module) to increase the capacity of the energy storage device.

[0034] In one embodiment of the present application, the energy storage device 30 may be a self-moving device including a battery pack, such as an automobile device, a lawn mowing device, a sweeping device, a cruise device, etc., or an energy storage device such as a mobile energy storage device, a household energy storage device, or other electronic devices including a battery pack or an electronic device with an energy storage function. The energy storage device 30 may also be connected to a terminal device / server, which includes but is not limited to any electronic product that can interact with a user through a keyboard, a mouse, a remote control, a touchpad, or a voice control device, such as a personal computer, a tablet computer, a smart phone, a digital camera, etc.

[0035] It should be noted that the energy storage device 30 is only an example, and other existing or future electronic products that are suitable for the present application should also be included in the protection scope of the present application and included here by reference.

[0036] In some embodiments, at least one communication bus 33 is configured to implement connection and communication between the memory 31 and at least one processor 32, etc.

[0037] In some embodiments, the energy storage device 30 may further include a battery pack 34 for supplying power to various components, and the battery pack 34 may be logically connected to at least one processor 32 through a power management device (not shown), so as to manage charging, discharging, and power consumption through the power management device. The energy storage device 30 may also include any components such as one or more DC or AC power supplies, recharging devices, power failure detection circuits, power converters or inverters, and power status indicators.

[0038] In some embodiments, the energy storage device 30 may also include a variety of sensors, Bluetooth modules, Wi-Fi modules, etc., which will not be repeated here.

[0039] Figure 2 is a flow chart of a charge and discharge control method provided in an embodiment of the present application, and the charge and discharge control method can be applied to energy storage devices. Figure 2 As shown, the charge and discharge control method may include the following steps. According to different requirements, the order of the steps in the flowchart can be changed, and some steps can be omitted.

[0040] S11, charging the detachable battery module when establishing electrical connection with the detachable battery module.

[0041] In some embodiments, the energy storage device can establish electrical connections with one or more detachable battery modules. The number of detachable battery modules can be set according to actual needs. For example, the number of detachable battery modules can be one or more. The embodiment of the present application takes the number of detachable battery modules as 3 as an example, namely detachable battery module A1, detachable battery module A2 and detachable battery module A3. When detachable battery module A1, detachable battery module A2 and detachable battery module A3 are all electrically connected to the detachable battery module, the energy storage device can charge detachable battery module A1, detachable battery module A2 and detachable battery module A3 respectively.

[0042] The above “charging the detachable battery module when an electrical connection is established with the detachable battery module” can be understood as that the detachable battery module is electrically connected to the energy storage device, and the detachable battery module is in a charging mode, and the detachable battery module is charged by the energy storage device.

[0043] S12, when a mode switching event is triggered, stopping charging the detachable battery module and drawing power from the detachable battery module.

[0044] In some embodiments, the mode switching event may be a pre-set event for switching the charge and discharge mode between the energy storage device and the detachable battery module. The mode switching event may be triggered in different ways, for example, the mode switching event may be triggered by a first switching instruction sent by a terminal device or a server, or by a preset button on a detachable battery module, or by the remaining power of the energy storage device meeting a preset power condition.

[0045] In some embodiments, the first switching instruction may be an instruction sent by a user to the energy storage device through a terminal device or a server for switching the charging and discharging mode between the energy storage device and the detachable battery module.

[0046] In some embodiments, a preset button is provided on the detachable battery module, and the preset button is used to control the energy storage device to draw power from the detachable battery module, or to switch the charge and discharge mode of the detachable battery pack.

[0047] When multiple types of mode switching events are set in the energy storage device, any mode switching instruction is triggered to stop charging the detachable battery module and draw power from the detachable battery module.

[0048] In some embodiments, when there are multiple detachable battery modules that establish electrical connections with the energy storage device, when a mode switching event is triggered, the detachable battery module corresponding to the mode switching event can be determined from the multiple detachable battery modules, the charge and discharge mode of the detachable battery module can be changed, power can be drawn from the detachable battery module, and the charge and discharge modes of other detachable battery modules can be maintained.

[0049] Following the above embodiment, it is assumed that the energy storage device is charging the detachable battery module A1, the detachable battery module A2 and the detachable battery module A3.

[0050] In an exemplary scenario, the energy storage device receives a first switching instruction, and the first switching instruction is used to switch the charging and discharging mode between the energy storage device and the removable battery module A1. The energy storage device only stops charging the removable battery module A1, draws power from the removable battery module A1, and continues to charge the removable battery module A2 and the removable battery module A3.

[0051] In another exemplary scenario, when a preset button on the detachable battery module A2 is triggered, the energy storage device only stops charging the detachable battery module A2, draws power from the detachable battery module A2, and continues to charge the detachable battery modules A1 and A3.

[0052] In another exemplary scenario, when the remaining power of the energy storage device meets the preset power condition, the energy storage device stops charging the removable battery module A1, the removable battery module A2 and the removable battery module A3, and draws power from the removable battery module A1, the removable battery module A2 and the removable battery module A3.

[0053] In another exemplary scenario, when the remaining power of the energy storage device meets the preset power condition, the energy storage device can select one or more detachable battery modules from the detachable battery module A1, the detachable battery module A2 and the detachable battery module A3, stop charging the selected detachable battery modules, and draw power from the selected detachable battery modules. The selection method may include but is not limited to selection according to a preset strategy or random selection.

[0054] In the charge and discharge control method provided in the embodiment of the present application, when an electrical connection is established with the detachable battery module, the detachable battery module is charged; when a mode switching event is triggered, the charging of the detachable battery module is stopped and power is taken from the detachable battery module. The above method can adjust the charge and discharge mode between the energy storage device and the detachable battery module according to the triggering of the mode switching event, so that the user can dynamically adjust the charge and discharge mode of the detachable battery module according to the needs of the actual scene, and can control the energy storage device to charge the detachable battery module, and can control the energy storage device to take power from the detachable module, thereby greatly expanding the application scenarios of the detachable battery module and improving the flexibility of the charge and discharge mode switching.

[0055] Combination Figure 3 The application scenarios of the charge and discharge control method provided in the embodiment of the present application are described as follows: Figure 3 As shown, the energy storage device establishes electrical connection with multiple detachable battery modules ( Figure 3In the example of the number of detachable battery modules being three, the energy storage device communicates with the terminal device through a server in the cloud, or the energy storage device can also directly establish a communication connection with the terminal device. When the energy storage device detects that an electrical connection is established with the detachable battery module, the energy storage device sends the relevant information of the detachable battery module to the terminal device through the server, or directly to the terminal device.

[0056] The terminal device is provided with a display screen for displaying relevant information of the removable battery module, wherein the relevant information may include but is not limited to information such as the identification of the removable battery module access, the battery capacity, and the remaining battery power. In addition, the control options corresponding to the removable battery module may also be displayed on the display screen, and the control options may refer to the pre-set switching options for the charging and discharging modes between the energy storage device and the removable battery module. The terminal device can perform human-computer interaction, and the interaction methods include but are not limited to keyboard, mouse, remote control, touchpad or voice control device. Through the above-mentioned interaction method, the user enables the terminal device to send the first switching instruction to the energy storage device through the server, or directly send the first switching instruction to the energy storage device.

[0057] In some embodiments, when a mode switching event is triggered, charging of the removable battery module is stopped and power is drawn from the removable battery module, including: upon receiving a first switching instruction sent by a terminal device or a server, charging of the removable battery module is stopped and power is drawn from the removable battery module. The first switching instruction is used to switch the charging and discharging mode between the energy storage device and the removable battery module. In an embodiment of the present application, a first switching instruction is sent to the energy storage device through a terminal device or a server, so that the energy storage device stops charging the removable battery module according to the first switching instruction and draws power from the removable battery module, which can avoid the problem that the charging and discharging mode between the energy storage device and the removable battery module cannot be flexibly switched, thereby improving the flexibility of switching the charging and discharging mode.

[0058] In some embodiments, when the energy storage device establishes an electrical connection with the removable battery module and the energy storage device draws power from the removable battery module, if the energy storage device receives a first switching instruction sent by the terminal device or the server, the energy storage device can stop drawing power from the removable battery module and charge the removable battery module.

[0059] In some embodiments, when the energy storage device is electrically connected to only one removable battery module (e.g., removable battery module A1), upon receiving the first switching instruction sent by the terminal device or the server, the energy storage device stops charging the removable battery module A1 and draws power from the removable battery module A1. In other embodiments, the energy storage device is electrically connected to multiple removable battery modules (e.g., removable battery module A1, removable battery module A2, and removable battery module A3 are all electrically connected to the energy storage device), and the first switching instruction needs to be parsed to determine the target removable battery module from the multiple removable battery modules. Figure 4 1 is a flow chart for determining a target detachable battery module provided in an embodiment of the present application, and a method for determining a target detachable battery module is applied to an energy storage device. Figure 4 As shown, the following steps are included:

[0060] S21, when receiving a first switching instruction sent by a terminal device or a server, obtaining a target identifier from the first switching instruction.

[0061] In some embodiments, when the energy storage device is electrically connected to multiple detachable battery modules, the energy storage device can send relevant information (such as identification) of each detachable battery module to the terminal device through the server, or can also send it directly to the terminal device. The display screen of the terminal device will display relevant information and control options of each detachable battery module.

[0062] Continuing with the above embodiment, the display screen of the terminal device may display the identification B1 and control option C1 of the removable battery module A1, the identification B2 and control option C2 of the removable battery module A2, and the identification B3 and control option C3 of the removable battery module A3.

[0063] In one embodiment, when the user triggers only the control option C1 on the display screen, the terminal device or the server generates a first switching instruction D1 and sends the first switching instruction D1 to the energy storage device. The first switching instruction D1 carries the identification B1 of the removable battery module A1 being connected.

[0064] When receiving the first switching instruction D1 , the energy storage device parses the first switching instruction D1 and obtains the target identifier, that is, the identifier B1 , from the first switching instruction D1 .

[0065] In other embodiments, when the user triggers the control options C1 and C2 on the display screen, the terminal device or the server generates a first switching instruction D1 and a first switching instruction D2 respectively, and sends the first switching instruction D1 and the first switching instruction D2 to the energy storage device. The first switching instruction D1 carries the identification B1 of the removable battery module A1 being connected, and the first switching instruction D2 carries the identification B2 of the removable battery module A2 being connected.

[0066] When receiving the first switching instruction D1 and the first switching instruction D2, the energy storage device parses the first switching instruction D1 and the first switching instruction D2 respectively, obtains the target identifier from the first switching instruction D1, that is, the identifier B1, and obtains the target identifier from the first switching instruction D2, that is, the identifier B2.

[0067] S22, determining a target removable battery module from all removable battery modules according to the target identifier; the target identifier is related to the electrical connection position and / or device information of the target removable battery module.

[0068] In some embodiments, a correspondence between an identifier and a detachable battery module is preset, and by querying the correspondence, a target detachable battery module corresponding to the target identifier can be determined from all detachable battery modules.

[0069] In some embodiments, the identification of the detachable battery module can be determined based on the electrical connection position of the detachable battery module, or the identification of the detachable battery module can be determined based on the device information of the detachable battery module, wherein the electrical connection position may include the slot / bin position to which the detachable battery module is connected, etc., and the device information may include but is not limited to the device serial number, product model, etc. of the detachable battery module.

[0070] S23, stop charging the target detachable battery module, and draw power from the target detachable battery module.

[0071] When charging a removable battery module and receiving a first switching instruction sent by a terminal device or a server, the embodiment of the present application obtains a target identifier from the first switching instruction, then determines the target removable battery module from all removable battery modules based on the target identifier, stops charging the target removable battery module, and draws power from the target removable battery module. When the number of removable battery modules electrically connected to the energy storage device is large, it is possible to determine the removable battery module that needs to switch the charging and discharging mode, thereby improving the accuracy of the charging and discharging mode switching and the flexibility of using multiple removable battery modules.

[0072] In some embodiments, a preset button is provided on the detachable battery module, and when the preset button is triggered, the detachable battery module generates button trigger information.

[0073] Among them, the preset button is used to control the energy storage device to draw power from the detachable battery module, or to control the energy storage device to switch the charging and discharging mode of the detachable battery module.

[0074] The button trigger information may be information for stopping charging of the detachable battery module, or may be information for instructing the energy storage device to switch the charge and discharge mode of the detachable battery module.

[0075] The key trigger information may carry the identification of the removable battery module. Continuing from the above embodiment, the removable battery module A1 is provided with a preset key K1, the removable battery module A2 is provided with a preset key K2, and the removable battery module A3 is provided with a preset key K3. When the preset key K1 is triggered, the key trigger information M1 is generated, and the key trigger information M1 carries the identification of the removable battery module A1.

[0076] In some embodiments, when a mode switching event is triggered, charging of the removable battery module is stopped and power is drawn from the removable battery module, including: when a key trigger information sent by the removable battery module is received, charging of the removable battery module is stopped and power is drawn from the removable battery module.

[0077] Among them, when the energy storage device charges the removable battery module and the energy storage device receives the key trigger information sent by the removable battery module, the energy storage device can parse the key trigger information, obtain identification information, and determine the target removable battery module from all removable battery modules according to the identification information, stop charging the target removable battery module, and draw power from the target removable battery module.

[0078] When the embodiment of the present application charges the detachable battery module and receives a key trigger information sent by the detachable battery module, it stops charging the detachable battery module and draws power from the detachable battery module. This can avoid the problem that the charging and discharging modes between the energy storage device and the detachable battery module cannot be flexibly switched, and improves the flexibility of switching the charging and discharging modes.

[0079] In some embodiments, the mode switching event may also include that the remaining power of the energy storage device meets a preset power condition. Figure 5 is a flowchart of obtaining the remaining power provided in an embodiment of the present application, and the method for obtaining the remaining power is applied to energy storage devices. Figure 5 As shown, the following steps are included:

[0080] S31, obtaining the target remaining power of the energy storage device.

[0081] S32, when the target remaining power is lower than a preset power threshold, stop charging the removable battery module and draw power from the removable battery module.

[0082] In some embodiments, the preset power threshold is a preset remaining power value, for example, the preset power threshold may be 20%, 30%, 50%, etc. When the target remaining power is lower than the preset power threshold, it indicates that the current remaining power of the energy storage device is low, and charging of the removable battery module is stopped.

[0083] In some embodiments, the energy storage device is electrically connected to multiple removable battery modules, and when the target remaining power is lower than a preset power threshold, charging of each removable battery module is stopped and power is drawn from the removable battery modules; in other embodiments, when the target remaining power is lower than the preset power threshold, one or more removable battery modules can be selected from all the removable battery modules, charging of the selected one or more removable battery modules is stopped, and power is drawn from the selected one or more removable battery modules.

[0084] In the embodiment of the present application, when the target remaining power of the energy storage device is lower than a preset power threshold, charging of the detachable battery module is stopped and power is taken from the detachable battery module, which can avoid the problem that the charging and discharging modes between the energy storage device and the detachable battery module cannot be flexibly switched, thereby improving the flexibility of switching the charging and discharging modes; and when the target remaining power is lower than the preset power threshold, charging of the detachable battery module is stopped in time, which can avoid excessive loss of the energy storage device and improve the service life of the energy storage device.

[0085] In some embodiments, the preset power threshold includes a first preset power threshold and a second preset power threshold, and the second preset power threshold is greater than the first preset power threshold. Figure 6 is a flow chart for determining a preset power condition provided in an embodiment of the present application, and a method for determining a preset power condition is applied to an energy storage device. Figure 6 As shown, the following steps are included:

[0086] S41, when the target remaining power is greater than or equal to a first preset power threshold and less than or equal to a second preset power threshold, stop charging the detachable battery module.

[0087] In some embodiments, the first preset power threshold and the second preset power threshold are both preset. For example, the first preset power threshold may be 20%, and the second preset power threshold may be 50%.

[0088] When the target remaining power is greater than or equal to 20% and less than or equal to 50%, it indicates that the current remaining power of the energy storage device is low, but there is still a certain margin. At this time, stop charging the detachable battery module to avoid the remaining power being quickly exhausted.

[0089] S42, when the target remaining power is less than a first preset power threshold, draw power from the detachable battery module.

[0090] In some embodiments, when the target remaining power is less than 20%, it indicates that the current remaining power of the energy storage device is too low and needs to be powered by the detachable battery module.

[0091] In the embodiment of the present application, by setting a first preset power threshold and a second preset power threshold, it is determined to stop charging the detachable battery module or to draw power from the detachable battery module according to the relationship between the target remaining power of the energy storage device and the first preset power threshold and the second preset power threshold, so as to improve the flexibility of switching the charging and discharging mode; and it is possible to stop charging the detachable battery module or to draw power from the detachable battery module in time, so as to avoid excessive loss of the energy storage device and improve the service life of the energy storage device; and there is a certain difference between the first preset power threshold and the second preset power threshold, so as to avoid frequent switching of the charging and discharging mode of the detachable battery module when the target remaining power of the energy storage device fluctuates around the preset power threshold.

[0092] Combination Figure 7 The electrical connection diagram of the detachable battery module and the energy storage device provided in the embodiment of the present application is described. The detachable battery module is electrically connected to the DC bus of the energy storage device through a bidirectional power conversion circuit. For each detachable battery module, there is a corresponding bidirectional power conversion circuit. Continuing from the above embodiment, the detachable battery module A1 corresponds to the bidirectional power conversion circuit 1, the detachable battery module 2 corresponds to the bidirectional power conversion circuit 2, and the detachable battery module 3 corresponds to the bidirectional power conversion circuit 3. Figure 7 Take the number of detachable battery modules electrically connected to the energy storage device as one for example. Figure 7 As shown, there are two bidirectional power conversion circuits, namely bidirectional power conversion circuit 1 and bidirectional power conversion circuit 2, wherein the detachable battery module is electrically connected to the DC bus of the energy storage device through the bidirectional power conversion circuit 1, and the internal battery module of the energy storage device is electrically connected to the DC bus through the bidirectional power conversion circuit 2. The bidirectional power conversion circuit 1 takes power from the DC bus of the energy storage device to charge the detachable battery module, or the bidirectional power conversion circuit 1 takes power from the detachable battery module and transmits it to the DC bus of the energy storage device.

[0093] In other embodiments, Figure 8 As shown, the detachable battery module is electrically connected to the DC bus of the energy storage device, and the number of the detachable battery modules is one or more. Figure 8 In the figure, only one detachable battery module is used as an example. The internal battery module of the energy storage device is electrically connected to the DC bus through the bidirectional power conversion circuit 3. The bidirectional power conversion circuit 3 controls the voltage of the DC bus so that the DC bus transmits electric energy to the detachable battery module for charging, or takes power from the detachable battery module and transmits it to the DC bus of the energy storage device.

[0094] In other embodiments, Fig. 9As shown, the detachable battery module is electrically connected to the internal battery module of the energy storage device through the bidirectional power conversion circuit 4. At this time, the bidirectional power conversion circuit 4 takes power from the internal battery module of the energy storage device to charge the detachable battery module, or the bidirectional power conversion circuit 4 takes power from the detachable battery module and transmits it to the internal battery module of the energy storage device.

[0095] In other embodiments, the detachable battery module and the energy storage device may also be electrically connected via other circuit topologies, so as to realize a bidirectional charging and discharging function between the detachable battery module and the energy storage device. This application does not limit the specific circuit topology.

[0096] In some embodiments, the bidirectional power conversion circuit (eg, bidirectional power conversion circuit 1 ) corresponding to the detachable battery module may be located in an energy storage device.

[0097] In other embodiments, the bidirectional power conversion circuit corresponding to the detachable battery module (eg, the bidirectional power conversion circuit 1 ) may also be located in the detachable battery module.

[0098] by Figure 7 Take the scenario shown as an example. In one example, the energy storage device receives a first switching instruction, and the energy storage device is charging a removable battery module. At this time, if the bidirectional power conversion circuit 1 is located in the energy storage device, the energy storage device directly controls the bidirectional power conversion circuit 1 so that the removable battery module corresponding to the bidirectional power conversion circuit 1 transmits electrical energy to the DC bus of the energy storage device; if the bidirectional power conversion circuit 1 is located in the removable battery module, the energy storage device can send a discharge instruction to the corresponding removable battery module through wired communication (for example, CAN bus) or wireless communication. After receiving the discharge instruction, the removable battery module controls the corresponding bidirectional power conversion circuit (that is, the bidirectional power conversion circuit 1) to take power from the removable battery module and transmit it to the DC bus.

[0099] In another example, a preset button on the detachable battery module is triggered, and the energy storage device is charging the detachable battery module. At this time, if the bidirectional power conversion circuit 1 is located in the detachable battery module, the detachable battery module controls the corresponding bidirectional power conversion circuit (i.e., the bidirectional power conversion circuit 1) to take power from the detachable battery module and transmit it to the DC bus; if the bidirectional power conversion circuit 1 is located in the energy storage device, the detachable battery module can send a discharge instruction to the energy storage device through wired communication (e.g., CAN bus) or wireless communication, and after receiving the discharge instruction, the energy storage device controls the corresponding bidirectional power conversion circuit (i.e., the bidirectional power conversion circuit 1) to take power from the detachable battery module and transmit it to the DC bus.

[0100] In some embodiments, stopping charging the detachable battery module and drawing power from the detachable battery module includes: controlling the bidirectional power conversion circuit (i.e., the bidirectional power conversion circuit 1) to stop drawing power from the DC bus to charge the detachable battery module, and controlling the bidirectional power conversion circuit (i.e., the bidirectional power conversion circuit 1) to draw power from the detachable battery module and transmit it to the DC bus. In the embodiment of the present application, the detachable battery module is electrically connected to the DC bus of the energy storage device through the bidirectional power conversion circuit, and the bidirectional power conversion circuit is controlled to stop drawing power from the DC bus to charge the detachable battery module, and the bidirectional power conversion circuit is controlled to draw power from the detachable battery module and transmit it to the DC bus, so as to realize flexible adjustment of the charging and discharging mode between the energy storage device and the detachable battery module, avoid the problem of limited application scenarios, and improve the flexibility of switching the charging and discharging mode.

[0101] In some embodiments, the electric energy obtained by the energy storage device from the detachable battery module can be used to charge the internal battery module of the energy storage device, or, when the energy storage device is connected to a load, the electric energy obtained by the energy storage device from the detachable battery module can be used to power the load. Drawing power from the detachable battery module includes: drawing power from the detachable battery module to charge the internal battery module of the energy storage device, and / or, powering a load electrically connected to the energy storage device. The embodiments of the present application draw power from the detachable battery module to charge the internal battery module of the energy storage device, or to power a load electrically connected to the energy storage device, enriching the application scenarios between the energy storage device and the detachable battery module.

[0102] Among them, the scenarios of drawing power from the removable battery module to charge the internal battery module of the energy storage device and / or supplying power to the load electrically connected to the energy storage device may be: drawing power from the removable battery module to charge the internal battery module; or drawing power from the removable battery module and having the removable battery module supply power to the load alone; or drawing power from the removable battery module to supply power to the load and charge the internal battery module at the same time; or the removable battery module and the internal battery module are connected in parallel to supply power to the load together.

[0103] Taking a real-life scenario as an example, in one scenario, when the energy storage device is providing AC power to an electric oven, the power of the energy storage device is low, and the user can insert a removable battery module with sufficient power into the slot of the energy storage device, and the energy storage device charges the removable battery module. Then, the user causes the energy storage device to trigger a mode switching event, or the energy storage device automatically triggers a mode switching event, and the energy storage device can stop charging the removable battery module and draw power from the removable battery module, thereby extending the battery life of the energy storage device.

[0104] In another scenario, when the energy storage device has sufficient power, the user wants to use the detachable battery module independently, but the power of the detachable battery module is low, the user can insert the detachable battery module with insufficient power into the slot of the energy storage device, and the energy storage device charges the detachable battery module. After charging for a period of time, the detachable battery module has sufficient power, and the user can remove the detachable battery module and use it independently.

[0105] Based on the above scenarios, it can be seen that in the charge and discharge control method provided in the embodiment of the present application, when an electrical connection is established with the detachable battery module, the detachable battery module is charged; when a mode switching event is triggered, the charging of the detachable battery module is stopped and power is drawn from the detachable battery module. The above method can adjust the charge and discharge mode between the energy storage device and the detachable battery module according to the triggering of the mode switching event, so that the user can dynamically adjust the charge and discharge mode of the detachable battery module according to the needs of the actual scenario, and can control the energy storage device to charge the detachable battery module, and can control the energy storage device to draw power from the detachable module, thereby greatly expanding the application scenarios of the detachable battery module and improving the flexibility of the charge and discharge mode switching.

[0106] See also Fig.10 , Fig.10 is a schematic diagram of the structure of the charge and discharge control device provided in the embodiment of the present application. In some embodiments, the charge and discharge control device 20 may include a plurality of functional modules composed of computer program segments. The computer program of each program segment in the charge and discharge control device 20 may be stored in the memory of the energy storage device and executed by at least one processor to execute (see Figure 2 Description) Function of charge and discharge control.

[0107] In this embodiment, the charge and discharge control device 20 can be divided into multiple functional modules according to the functions it performs. The functional modules may include: a charging control module 201 and a power extraction control module 202. The module referred to in this application refers to a series of computer program segments that can be executed by at least one processor and can complete fixed functions, which are stored in a memory. In this embodiment, the functions of each module will be described in detail in subsequent embodiments.

[0108] The charging control module 201 can be used to charge the detachable battery module when establishing an electrical connection with the detachable battery module.

[0109] The power taking control module 202 may be used to stop charging the detachable battery module and take power from the detachable battery module when a mode switching event is triggered.

[0110] It can be understood that the charge and discharge control device 20 and the charge and discharge control method of the above embodiment belong to the same inventive concept, and the specific implementation method of each module in the charge and discharge control device 20 corresponds to the steps of the charge and discharge control method in the above embodiment, which will not be repeated in this application.

[0111] The module division described above is a logical function division, and there may be other division methods in actual implementation. In addition, the functional modules in each embodiment of the present application may be integrated in the same processing unit, or each module may exist physically separately, or two or more modules may be integrated in the same unit. The above-mentioned integrated modules may be implemented in the form of hardware or in the form of hardware plus software functional modules.

[0112] then Figure 1 Description of the energy storage device: In some embodiments, the energy storage device 30 is a device that can automatically perform numerical calculations and / or information processing according to pre-set or stored instructions, and its hardware includes but is not limited to microprocessors, application-specific integrated circuits, programmable gate arrays, digital processors, and embedded devices.

[0113] Although not shown, the power source connected to the energy storage device 30 may include any components such as one or more DC or AC power sources, recharging devices, power failure detection circuits, power converters or inverters, power status indicators, etc. The energy storage device 30 may also include a variety of sensors, Bluetooth modules, Wi-Fi modules, etc., which will not be described in detail here.

[0114] In some embodiments, a computer program is stored in the memory 31, and when the computer program is executed by at least one controller 32, all or part of the steps in the charge and discharge control method are implemented. The memory 31 includes a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), a one-time programmable read-only memory (OTPROM), an electronically erasable rewritable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, magnetic disk storage, magnetic tape storage, or any other computer-readable medium that can be used to carry or store data.

[0115] Furthermore, the computer-readable storage medium may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application required for at least one function, etc.; the data storage area may store data created according to the use of the energy storage device 30, etc.

[0116] In some embodiments, at least one processor 32 is the control core (Control Unit) of the energy storage device 30, and uses various interfaces and lines to connect the various components of the entire energy storage device 30, and executes various functions and processes data of the energy storage device 30 by running or executing programs or modules stored in the memory 31, and calling data stored in the memory 31. For example, when at least one processor 32 executes the computer program stored in the memory, it implements all or part of the steps of the charge and discharge control method in the embodiment of the present application; or implements all or part of the functions of the charge and discharge control device. At least one processor 32 can be composed of an integrated circuit, for example, it can be composed of a single packaged integrated circuit, or it can be composed of multiple integrated circuits with the same function or different functions, including one or more central processing units (CPUs), microprocessors, digital processing chips, graphics processors, and a combination of various control chips.

[0117] The above-mentioned integrated unit implemented in the form of a software function module can be stored in a computer-readable storage medium. The above-mentioned software function module is stored in a storage medium, including a number of instructions for enabling an energy storage device (which can be a personal computer, energy storage device, or network device, etc.) or a processor to execute parts of the methods of various embodiments of the present application.

[0118] In the several embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of modules is only a logical function division, and there may be other division methods in actual implementation.

[0119] The modules described as separate components may or may not be physically separated, and the components shown as modules may or may not be physical units, and may be located in one place or distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0120] In addition, each functional module in each embodiment of the present application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional modules.

[0121] It is obvious to those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and that the present application can be implemented in other specific forms without departing from the spirit or basic features of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present application is limited by the attached claims rather than the above description, so it is intended to include all changes that fall within the meaning and scope of the equivalent elements of the claims in the present application. Any figure mark in the claims should not be regarded as limiting the claims involved. In addition, it is obvious that the word "including" does not exclude other units or, and the singular does not exclude the plural. Multiple units or devices stated in the specification can also be implemented by one unit or device through software or hardware. The words first, second, etc. are used to indicate names, and do not indicate any particular order.

[0122] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present application and are not intended to limit it. Although the present application has been described in detail with reference to the preferred embodiments, a person of ordinary skill in the art should understand that the technical solution of the present application may be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present application.

Claims

1. A charge and discharge control method, applied to energy storage equipment, characterized in that: include: When establishing electrical connection with the detachable battery module, charging the detachable battery module; When a mode switching event is triggered, charging of the detachable battery module is stopped and power is drawn from the detachable battery module.

2. The charge and discharge control method according to claim 1, characterized in that: When a mode switching event is triggered, stopping charging the detachable battery module and drawing power from the detachable battery module comprises: When a first switching instruction sent by a terminal device or a server is received, charging of the detachable battery module is stopped, and power is drawn from the detachable battery module.

3. The charge and discharge control method according to claim 2, characterized in that: The energy storage device is electrically connected to the plurality of detachable battery modules; When receiving the first switching instruction sent by the terminal device or the server, stopping charging the detachable battery module and drawing power from the detachable battery module includes: When receiving a first switching instruction sent by a terminal device or a server, acquiring a target identifier from the first switching instruction; Determine a target detachable battery module from all the detachable battery modules according to the target identifier; the target identifier is related to the electrical connection position and / or device information of the target detachable battery module; Stop charging the target detachable battery module and draw power from the target detachable battery module.

4. The charge and discharge control method according to claim 1, characterized in that: The detachable battery module is provided with a preset button, and when the preset button is triggered, the detachable battery module generates button trigger information; When a mode switching event is triggered, stopping charging the detachable battery module and drawing power from the detachable battery module comprises: When the key trigger information sent by the detachable battery module is received, charging of the detachable battery module is stopped and power is taken from the detachable battery module.

5. The charge and discharge control method according to claim 1, characterized in that: When a mode switching event is triggered, stopping charging the detachable battery module and drawing power from the detachable battery module comprises: Obtaining a target remaining power of the energy storage device; When the target remaining power is lower than a preset power threshold, charging the detachable battery module is stopped and power is drawn from the detachable battery module.

6. The charge and discharge control method according to claim 1, characterized in that: The preset power threshold includes a first preset power threshold and a second preset power threshold, and the second preset power threshold is greater than the first preset power threshold; When the target remaining power is lower than a preset power threshold, stopping charging the detachable battery module and drawing power from the detachable battery module includes: When the target remaining power is greater than or equal to the first preset power threshold and less than or equal to the second preset power threshold, stopping charging the detachable battery module; When the target remaining power is less than the first preset power threshold, power is drawn from the detachable battery module.

7. The charge and discharge control method according to claim 1, characterized in that: The detachable battery module is electrically connected to the DC bus of the energy storage device via a bidirectional power conversion circuit; The step of stopping charging the detachable battery module and drawing power from the detachable battery module comprises: The bidirectional power conversion circuit is controlled to stop taking power from the DC bus to charge the detachable battery module, and the bidirectional power conversion circuit is controlled to take power from the detachable battery module and transmit it to the DC bus.

8. The charge and discharge control method according to claim 1, characterized in that: The step of taking power from the detachable battery module comprises: Power is drawn from the detachable battery module to charge the internal battery module of the energy storage device and / or to supply power to a load electrically connected to the energy storage device.

9. An energy storage device, characterized in that: The energy storage device includes a processor and a memory, and the processor is used to implement the charge and discharge control method according to any one of claims 1 to 8 when executing a computer program stored in the memory.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the charge and discharge control method according to any one of claims 1 to 8 is implemented.

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