Charging device, protection method of charging device and readable storage medium

Abstract

The present application provides a charging device, a protection method for the charging device, and a readable storage medium, which belong to the field of charging control technology. The charging device includes: a main control module, a guard module, a charging module, and a contactor. The charging device is connected to the battery pack module through a power supply line, and the contactor is connected in series to the power supply line; the main control module is connected to the charging module in communication, and the guard module is connected to the main control module and the charging module in communication, respectively; the guard module is used to determine the working state of the main control module according to the first communication state between the main control module and the charging module, and when the working state of the main control module is an abnormal state, the charging module is controlled to shut down and the contactor is disconnected. The present application can take over the control of the charging module through the guard module when the main control module is in an abnormal state, thereby avoiding damage to the charging device and the battery pack, ensuring personnel safety, and improving the safety of the charging device.

Description

Technical Field

[0001] The present application relates to the field of charging protection technology, and in particular to a charging device, a protection method for a charging device, and a readable storage medium. Background Art

[0002] When an electric vehicle charging pile is charging an electric vehicle, or when a charging test is performed on an electric vehicle, in order to ensure the safety of charging and testing, it is usually necessary to set a related charging protection method.

[0003] In the prior art, for example, in a test scenario, an abnormal condition in the circuit is usually detected based on a main control module. When an abnormal condition is determined to exist, the main control module controls the contactor to disconnect, thereby protecting the circuit and avoiding damage to the charging device during the test.

[0004] However, during the test process, if the main control module itself has abnormal problems, such as downtime, it will not be able to protect the charging equipment. This will cause the entire circuit to be in an uncontrollable and dangerous state, with low safety, and may cause damage to the charging equipment. Summary of the invention

[0005] The purpose of the present application is to provide a charging device, a protection method for the charging device, and a readable storage medium, which can take over the charging module through the guardian module when the main control module is in an abnormal state, thereby avoiding damage to the charging device and improving the safety of the charging device.

[0006] The embodiment of the present application is implemented as follows:

[0007] In one aspect of an embodiment of the present application, a charging device is provided, including: a main control module, a guard module, a charging module and a contactor, wherein the charging device is connected to a battery pack module via a power supply line, and the contactor is connected in series to the power supply line;

[0008] The main control module is connected to the charging module for communication, and the guard module is connected to the main control module and the charging module for communication respectively;

[0009] The guard module is used to determine the working state of the main control module according to the first communication state between the main control module and the charging module, and when the working state of the main control module is an abnormal state, control the charging module to shut down and control the contactor to disconnect.

[0010] Optionally, the guard module includes: a switch unit;

[0011] One end of the switch unit is connected to the control end of the contactor, and the other end of the switch unit is connected to the main control module;

[0012] The guard module is specifically used to control the charging module to shut down and the contactor to disconnect when the switch unit is closed and the first communication state of the main control module is abnormal, so that the charging module stops supplying power to the battery pack module.

[0013] Optionally, the charging device further includes: a functional module;

[0014] The function module is communicatively connected with the main control module. The guard module is further used to determine a second communication state between the main control module and the function module, and determine a working state of the main control module based on the first communication state and the second communication state.

[0015] Optionally, the guard module is also connected to the power supply line between the battery pack module and the charging module. The guard module is also used to collect voltage information and / or current information of the power supply line, and control the contactor to disconnect based on the voltage information and / or current information.

[0016] Optionally, the charging device further includes: an alarm module, the alarm module is communicatively connected to the guard module, the guard module is used to send control information to the alarm module when the main control module is in an abnormal state, and the alarm module sends an alarm signal according to the control information.

[0017] Another aspect of an embodiment of the present application provides a protection method for a charging device, the method being applied to a guard module in the charging device, the method comprising:

[0018] Acquire a first communication state between the main control module and the charging module, and determine a working state of the main control module based on the first communication state;

[0019] If the first communication state is a disconnected state, determining that the main control module is in an abnormal state;

[0020] When the main control module is in an abnormal state, the charging module is controlled to shut down and the contactor is controlled to disconnect.

[0021] Optionally, controlling the charging module to shut down and controlling the contactor to disconnect includes:

[0022] Control the charging module to shut down and control the contactor to disconnect after a preset time.

[0023] Optionally, the charging module is controlled to shut down, and voltage information and / or current information on the power supply line between the charging module and the battery pack module is obtained;

[0024] Determining whether the contactor meets a disconnection condition based on the voltage information and / or the current information;

[0025] If yes, the control contactor is disconnected.

[0026] Optionally, the method further comprises:

[0027] Determine whether the main control module recovers abnormally;

[0028] After the main control module is in an abnormal recovery state, in response to a user operation, the charging module is controlled to be turned on and the contactor is controlled to be closed.

[0029] Optionally, after determining that the main control module is in an abnormal state, the method further includes:

[0030] Generate control information and send the control information to the alarm module connected to the guard module, so that the alarm module sends an alarm signal according to the control information.

[0031] Another aspect of the embodiment of the present application provides a protection device for a charging device, the method is applied to a guard module in the charging device, the device comprises: an acquisition unit, a judgment unit and a control unit;

[0032] an acquisition unit, configured to acquire a first communication state between the main control module and the charging module, and determine a working state of the main control module based on the first communication state;

[0033] a judgment unit, configured to determine that the main control module is in an abnormal state if the first communication state is a disconnected state;

[0034] The control unit is used to control the charging module to shut down and the contactor to disconnect when the main control module is in an abnormal state.

[0035] Optionally, the control unit is specifically used to control the charging module to shut down and control the contactor to disconnect after a preset time.

[0036] Optionally, the control unit is specifically used to control the shutdown of the charging module and obtain the voltage information and / or current information on the power supply line between the charging module and the battery pack module; determine whether the contactor meets the disconnection condition based on the voltage information and / or current information; if so, control the contactor to disconnect.

[0037] Optionally, the control unit is also used to determine whether the main control module has recovered abnormally; after the main control module is in an abnormal recovery state, in response to user operation, the charging module is controlled to be turned on and the contactor is controlled to be closed.

[0038] Optionally, the control unit is further used to generate control information and send the control information to an alarm module connected to the guard module, so that the alarm module sends an alarm signal according to the control information.

[0039] In another aspect of an embodiment of the present application, a guard module is provided, including: a memory and a processor, wherein the memory stores a program that can be run on the processor, and when the processor executes the program, the steps of the protection method of the charging device are implemented.

[0040] In another aspect of an embodiment of the present application, a computer-readable storage medium is provided, on which a program is stored. When the program is executed by a processor, the steps of the protection method of the charging device are implemented.

[0041] The beneficial effects of the embodiments of the present application include:

[0042] In a charging device, a protection method for a charging device, and a readable storage medium provided by an embodiment of the present application, the charging device is connected to a battery pack module via a power supply line, and a contactor is connected in series to the power supply line; the main control module is communicatively connected to the charging module, and the guard module is communicatively connected to the main control module and the charging module respectively; wherein the guard module can determine the working state of the main control module according to the first communication state between the main control module and the charging module, and when the working state of the main control module is an abnormal state, control the charging module to shut down, and control the contactor to disconnect, so that the charging module stops supplying power to the battery pack module. Through the guard module, the charging module can be shut down and the battery pack module can be powered off in time when an abnormality occurs in the main control module, thereby ensuring that when the main control module is abnormal, the entire circuit can normally implement the shutdown process, avoiding problems caused by the abnormality of the main control module, and improving the safety of the entire charging device. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0044] Figure 1 A schematic diagram of the structure of a charging device provided in an embodiment of the present application;

[0045] Figure 2 Another schematic diagram of the structure of the charging device provided in the embodiment of the present application;

[0046] Figure 3 Another schematic diagram of the structure of the charging device provided in the embodiment of the present application;

[0047] Figure 4 Another schematic diagram of the structure of the charging device provided in the embodiment of the present application;

[0048] Figure 5 Another schematic diagram of the structure of the charging device provided in the embodiment of the present application;

[0049] Figure 6 A schematic diagram of a flow chart of a method for protecting a charging device provided in an embodiment of the present application;

[0050] Figure 7 A schematic diagram of the structure of a protection device for a charging device provided in an embodiment of the present application;

[0051] Figure 8 A schematic diagram of the structure of the guard module provided in an embodiment of the present application.

[0052] Icon: 110-main control module; 120-guard module; 121-switch unit; 130-charging module; 140-battery pack module; 150-contactor; 160-functional module; 170-alarm module; 710-acquisition unit; 720-judgment unit; 730-control unit; 810-memory; 820-processor. DETAILED DESCRIPTION

[0053] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0054] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0055] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0056] In the description of the present application, it should be noted that the terms "first", "second", "third", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0057] Figure 1 For a schematic diagram of the structure of the charging device provided in the embodiment of the present application, please refer to Figure 1 The charging device includes: a main control module 110, a guard module 120, a charging module 130 and a contactor 150. The charging device is connected to the battery pack module 140 through a power supply line, and the contactor 150 is connected in series to the power supply line.

[0058] The main control module 110 is connected to the charging module 130 for communication, and the guard module 120 is connected to the main control module 110 and the charging module 130 for communication respectively.

[0059] The guard module 120 is used to determine the working state of the main control module 110 according to the first communication state between the main control module 110 and the charging module 130, and when the working state of the main control module 110 is abnormal, control the charging module 130 to shut down and control the contactor 150 to disconnect.

[0060] Optionally, the above method can be used to make the charging module 130 stop supplying power to the battery pack module 140 .

[0061] Among them, the charging equipment can specifically be a charging pile for charging electric vehicles. It can be a charging pile used in actual applications, or it can be a test charging pile used by staff to test the charging performance of electric vehicles. No specific limitation is made here.

[0062] Among them, the main control module 110 can be any type of controller, such as a microcontroller unit (MCU) or a central processing unit (CPU), etc., without specific limitation, and can be used for actual charging control, such as controlling the disconnection of other modules and controlling whether to charge the electric vehicle.

[0063] The guard module 120 may also be a controller with processing functions. Its structure may be similar to that of the main control module. It may not have the relevant logic of charging control. It is used to implement the disconnection control and status monitoring of other devices, etc., and no specific restrictions are made here.

[0064] The charging module 130 may include a charging module for converting AC to DC, a rectifier, etc., and may also include an inverter for converting DC to AC and a grid-connected function, for realizing a bidirectional conversion of the power grid to the electric vehicle through the charging pile. Whether the charging module is bidirectional or not is not specifically limited here.

[0065] The battery pack module 140 can specifically be a battery pack that can receive the electric energy provided by the above-mentioned charging module 130, so as to realize the normal charging operation of the battery pack module 140, and the electric power provided when charging the electric vehicle is stored in the battery pack module 140. The battery pack module can specifically be a battery pack on a charging vehicle.

[0066] The contactor 150 can specifically be a switch, which can be set on the above-mentioned power supply line. The power supply line is used to connect the battery pack module 140 and the charging module 130, and can specifically include two DC positive and DC negative lines. Accordingly, for the contactor 150, it can include two independent contactors, which are respectively connected in series on the DC+ and DC- power supply lines. Whether to control simultaneously or independently can be set accordingly according to actual needs, and is not limited to this example.

[0067] It should be noted that the contactor 150 can be a relay that can realize the on-off control of the power circuit, and the contactor 150 can be in a normally closed state when working normally. The first communication line communication state: when normal, it can be controlled by the main control module 110; when abnormal, it can be controlled by the guard module 120.

[0068] The following is an introduction to the working process of the above charging equipment:

[0069] During normal charging, the contactor 150 is closed, the charging module 130 is turned on, the charging module 130 supplies power to the battery pack module 140 and provides charging or discharging voltage and current, and the main control module 110 can perform corresponding control, for example: shutting down the charging module 130, adjusting the charging voltage, etc., and can perform corresponding control based on actual charging needs, which is not specifically limited here. At this time, the guard module 120 is in a state of monitoring the circuit and does not perform corresponding control.

[0070] When the main control module 110 is in an abnormal state, for example, the communication with the charging module 130 is disconnected, or an unqualified control signal is sent, the guard module 120 can determine that the main control module is in an abnormal state by monitoring the first communication state between the main control module 110 and the charging module 130, and then the guard module 120 can change from the monitoring state to the guard state. First, the guard module 120 can control the charging module 130 to shut down, and secondly, the guard module 120 can control the contactor 150 to disconnect, thereby ensuring the safety of the entire charging device.

[0071] It should be noted that the above connection status may specifically be status information on the communication bus, specific messages and other parameters.

[0072] In a charging device provided by an embodiment of the present application, the charging device is connected to the battery pack module through a power supply line, and the contactor is connected in series to the power supply line; the main control module is connected to the charging module in communication, and the guard module is connected to the main control module and the charging module in communication, respectively; wherein the guard module can determine the working state of the main control module according to the first communication state between the main control module and the charging module, and when the working state of the main control module is an abnormal state, control the charging module to shut down, and control the contactor to disconnect, so that the charging module stops supplying power to the battery pack module. Through the guard module, the charging module can be shut down and the battery pack module can be powered off in time when an abnormality occurs in the main control module, thereby ensuring that when the main control module is abnormal, the entire circuit can normally implement the shutdown process, avoiding problems caused by the abnormality of the main control module, and improving the safety of the entire charging device.

[0073] Another feasible specific structure of the charging device provided in the embodiment of the present application is explained in detail below.

[0074] Figure 2 For another structural diagram of the charging device provided in the embodiment of the present application, please refer to Figure 2 The guard module 120 includes: a switch unit 121; one end of the switch unit 121 is connected to the control end of the contactor 150, and the other end of the switch unit 121 is connected to the main control module 110; the guard module 120 is specifically used to control the charging module 130 to shut down and control the contactor 150 to disconnect when the switch unit 121 is closed and the first communication state of the main control module 110 is abnormal, so that the charging module 130 stops supplying power to the battery pack module 140.

[0075] Optionally, it should be noted that the switch unit 121 can be connected in series with the main control module 110. When the switch unit 121 is closed, the main control module 110 can operate normally, that is, it can control the contactor 150; when the switch unit 121 is disconnected, it is equivalent to disconnecting the connection between the main control module 110 and the contactor 150, so that the main control module 110 loses control of the contactor 150.

[0076] That is to say, under normal working conditions, the switch unit 121 can be in a normally closed state. When it is determined that there is an abnormality in the main control module 110, the switch unit 121 can be disconnected, and the guard module 120 replaces the main control module 110 to implement the control function in the circuit.

[0077] It should be noted that the opening and closing of the switch unit 121 can be achieved by enabling.

[0078] In a charging device provided in an embodiment of the present application, the connection or disconnection of the guard module can be achieved by closing or opening the above-mentioned switch unit, so that it can be selected whether to add the above-mentioned guard module to protect the circuit according to actual needs.

[0079] Another specific structural relationship of the charging device provided in the embodiment of the present application is explained in detail below.

[0080] Figure 3 For another structural diagram of the charging device provided in the embodiment of the present application, please refer to Figure 3 The charging device also includes: a functional module 160; the functional module 160 is communicatively connected to the main control module 110, and the guard module 120 is also used to determine the second communication state between the main control module 110 and the functional module 160, and determine the working state of the main control module 110 based on the first communication state and the second communication state.

[0081] Optionally, the functional module 160 can be of any type for providing various charging-related functions, such as: relays, digital feedback, guide resistors, high and low voltage acquisition, etc. The corresponding functions can be set based on actual charging needs. No specific restrictions are made here. The main control module 110 can achieve relevant control of the above functions by communicating with the functional module 160.

[0082] It should be noted that the main control module 110 and the charging module 130 can be connected via a first communication bus, and the main control module 110 and the guard module 120 can be connected via a second communication bus. The guard module 120 can determine the connection status of the above-mentioned first communication bus. When the communication is disconnected, it can be determined that the main control module 110 may have an abnormality, that is, a freeze or outage.

[0083] In a charging device provided in an embodiment of the present application, the guard module can determine whether the main control module is in an abnormal state by comparing the connection relationship between the main control module and the charging module and between the main control module and the functional module, and thus can more accurately implement relevant guard functions in the abnormal state and improve the safety of the overall device.

[0084] Another specific connection relationship of the guard module provided in the charging device provided in the embodiment of the present application is explained in detail below.

[0085] Figure 4 For another structural diagram of the charging device provided in the embodiment of the present application, please refer to Figure 4 The guard module 120 is also connected to the power supply line between the battery pack module 140 and the charging module 130. The guard module 120 is also used to collect voltage information and / or current information of the power supply line, and control the contactor 150 to disconnect based on the voltage information and / or current information.

[0086] Optionally, the guard module 120 is connected to the power supply line, specifically, it can be connected to the DC positive and DC negative lines respectively, and can collect the voltage and / or current on the power supply line. It can choose to collect voltage, current or both according to actual needs, and there is no limitation here.

[0087] It should be noted that, for the power supply line, since the charging voltage and current can be sampled, in order to ensure the safety of the entire charging device, it is usually necessary to shut down the power supply line only after the power supply current or power supply voltage in the power supply line is lower than a preset threshold, otherwise there may be safety hazards. After collecting the voltage and / or current on the power supply line in the above manner, it can be determined whether the shutdown condition is currently met, and when the power supply voltage or power supply current is lower than the preset threshold, the above trigger 150 is turned off.

[0088] In a charging device provided in an embodiment of the present application, a guard module determines whether the trigger disconnection condition is met based on the collected voltage information and / or current information in the power supply line, and then disconnects the trigger when the condition is met, thereby improving the accuracy of trigger control and the safety of the entire charging device.

[0089] The following is a detailed explanation of another specific connection relationship of the guard module provided in the charging device provided in the embodiment of the present application.

[0090] Figure 5 For another structural diagram of the charging device provided in the embodiment of the present application, please refer to Figure 5 The charging device also includes: an alarm module 170, which is in communication with the guard module 120. The guard module 120 is used to send control information to the alarm module 170 when the main control module 110 is in an abnormal state, and the alarm module 170 sends an alarm signal according to the control information.

[0091] Optionally, the alarm module 170 may be an alarm light, a loudspeaker, or any type of device that can serve as a reminder to the staff, and no specific limitation is made herein.

[0092] It should be noted that when the guard module 120 determines that the main control module 110 is in an abnormal state and needs to be guarded, it can send relevant control information to the alarm module 170. Different types of control information can be sent to different types of alarm modules 170. For example, relevant control information for controlling the alarm light to turn on can be sent to the alarm light; relevant control information for controlling the speaker to sound can be sent to the speaker. No specific restrictions are made here.

[0093] After receiving the corresponding control information, the alarm module 170 may send out a corresponding alarm signal, such as lighting up an alarm light or sounding an alarm, etc., which is not specifically limited here.

[0094] It should be noted that the alarm module 170 can be integrated into the guard module 120, or can also be a specially set reminder device. There is no specific limitation here, and the setting method can be selected according to actual needs.

[0095] In a charging device provided by an embodiment of the present application, the guard module can send control information to the alarm module when the main control module is in an abnormal state, and the alarm module can send an alarm signal according to the control information. The alarm module can be used to prompt the staff, so that the abnormal situation of the main control module can be prompted in time.

[0096] The specific implementation process of the protection method for the charging device provided in the embodiment of the present application is explained in detail below.

[0097] Figure 6 For a flow chart of the protection method of the charging device provided in the embodiment of the present application, please refer to Figure 6 , the method comprising:

[0098] S610: Acquire a first communication state between the main control module and the charging module, and determine a working state of the main control module based on the first communication state.

[0099] Optionally, the executor of the method may be the above-mentioned guard module, the first communication state may be the connection status between the main control module and the charging module, and the working state of the main control module may be determined based on the first communication state.

[0100] S620: If the first communication state is a disconnected state, determine that the main control module is in an abnormal state.

[0101] Optionally, the first communication state may include: a normal state and a disconnected state. If it is the normal state, it can be determined that the main control module is in a normal working state; correspondingly, if it is the disconnected state, it can be determined that the main control module is in an abnormal state.

[0102] S630: When the main control module is in an abnormal state, the charging module is controlled to shut down and the contactor is controlled to disconnect.

[0103] Optionally, when it is determined that the main control module is in an abnormal state, the charging module can be controlled to shut down first, and then the contactor can be controlled to disconnect.

[0104] In a protection method for a charging device provided in an embodiment of the present application, the first communication state between the main control module and the charging module can be obtained, and the working state of the main control module can be determined based on the first communication state; if the first communication state is a disconnected state, it is determined that the main control module is in an abnormal state; when the main control module is in an abnormal state, the charging module is controlled to shut down and the contactor is controlled to disconnect. Through the guard module, the charging module can be shut down and the battery pack module can be powered off in time when an abnormality occurs in the main control module, thereby ensuring that when the main control module is abnormal, the entire circuit can normally implement the shutdown process, avoiding problems caused by the abnormality of the main control module, and improving the safety of the entire charging device.

[0105] Optionally, controlling the charging module to shut down and controlling the contactor to disconnect includes: controlling the charging module to shut down and controlling the contactor to disconnect after a preset time.

[0106] It should be noted that when performing the above control, the charging module can be controlled to shut down first, and the contactor can be controlled to disconnect after a preset time, so as to avoid safety problems caused by excessive current on the power supply line.

[0107] In addition to the above methods to avoid security issues, the following methods can also be used to avoid security issues.

[0108] Optionally, controlling the charging module to shut down and controlling the contactor to disconnect includes: controlling the charging module to shut down, and obtaining voltage information and / or current information on the power supply line between the charging module and the battery pack module; determining whether the contactor meets the disconnection condition based on the voltage information and / or current information; if so, controlling the contactor to disconnect.

[0109] Among them, after controlling the charging module to shut down, the voltage information and / or current information on the power supply line can be obtained, and then whether the disconnection condition is met can be determined based on the size of the voltage information and / or current information. For example: if the voltage is less than the preset threshold and the current is less than the preset threshold, the contactor can be disconnected, and the contactor can be disconnected through the guard module.

[0110] Optionally, the method further includes: determining whether the main control module has recovered abnormally; and controlling the contactor to close after the main control module is in an abnormal recovery state.

[0111] Among them, during the guarding process of the guard module, the main control module can also be monitored. If the main control module is repaired due to human reasons, it can be determined that the main control module has recovered abnormally, and the charging module can be controlled to start up and the contactor can be controlled to close.

[0112] Optionally, after determining that the main control module is in an abnormal state, the method further includes: generating control information and sending the control information to an alarm module connected to the guard module, so that the alarm module sends an alarm signal according to the control information.

[0113] The following describes the devices, equipment, storage media, etc. corresponding to the charging device protection method provided by the present application. The specific implementation process and technical effects are described above and will not be repeated below.

[0114] Figure 7 For a schematic diagram of the structure of the protection device for the charging device provided in the embodiment of the present application, please refer to Figure 7 The device includes: an acquisition unit 710, a judgment unit 720 and a control unit 730.

[0115] An acquisition unit 710 is used to acquire a first communication state between the main control module and the charging module, and determine a working state of the main control module based on the first communication state;

[0116] The judging unit 720 is configured to determine that the main control module is in an abnormal state if the first communication state is a disconnected state;

[0117] The control unit 730 is used to control the charging module to shut down and the contactor to disconnect when the main control module is in an abnormal state.

[0118] Optionally, the control unit 730 is specifically configured to control the charging module to shut down, and control the contactor to disconnect after a preset time.

[0119] Optionally, the control unit 730 is specifically used to control the shutdown of the charging module and obtain the voltage information and / or current information on the power supply line between the charging module and the battery pack module; determine whether the contactor meets the disconnection condition based on the voltage information and / or current information; if so, control the contactor to disconnect.

[0120] Optionally, the control unit 730 is further used to determine whether the main control module is abnormally recovered; after the main control module is in an abnormal recovery state, control the charging module to start up and control the contactor to close.

[0121] Optionally, the control unit 730 is further configured to generate control information and send the control information to an alarm module connected to the guard module, so that the alarm module sends an alarm signal according to the control information.

[0122] In a protection device for a charging device provided in an embodiment of the present application, the first communication state between the main control module and the charging module can be obtained, and the working state of the main control module can be determined based on the first communication state; if the first communication state is a disconnected state, it is determined that the main control module is in an abnormal state; when the main control module is in an abnormal state, the charging module is controlled to shut down and the contactor is controlled to disconnect. Through the guard module, the charging module can be shut down and the battery pack module can be powered off in time when an abnormality occurs in the main control module, thereby ensuring that when the main control module is abnormal, the entire circuit can normally implement the shutdown process, avoiding problems caused by the abnormality of the main control module, and improving the safety of the entire charging device.

[0123] The above-mentioned device is used to execute the method provided by the aforementioned embodiment, and its implementation principle and technical effect are similar, which will not be repeated here.

[0124] For example, when a module above is implemented in the form of a processing element scheduling a program code, the processing element may be a general-purpose processor, such as a central processing unit (CPU) or other processor that can call program codes. For another example, these modules may be integrated together and implemented in the form of a system-on-a-chip (SOC).

[0125] Figure 8 For a schematic diagram of the structure of the guard module provided in the embodiment of the present application, please refer to Figure 8 The guard module includes: a memory 810 and a processor 820. The memory 810 stores a program that can be run on the processor 820. When the processor 820 executes the program, the steps of the protection method of the charging device are implemented.

[0126] In another aspect of an embodiment of the present application, a computer-readable storage medium is provided, on which a program is stored. When the program is executed by a processor, the steps of the protection method of the charging device are implemented.

[0127] In the several embodiments provided by the present invention, 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 units is only a logical function division, and there may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0128] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0129] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of hardware plus software functional units.

[0130] The above integrated unit implemented in the form of a software functional unit can be stored in a readable storage medium. The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or replacements within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

[0131] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A charging device, characterized in that: include: A main control module, a guard module, a charging module and a contactor, wherein the charging device is connected to the battery pack module via a power supply line, and the contactor is connected in series to the power supply line; The main control module is connected to the charging module for communication, and the guard module is connected to the main control module and the charging module for communication respectively; The guard module is used to determine the working state of the main control module according to the first communication state between the main control module and the charging module, and when the working state of the main control module is an abnormal state, control the charging module to shut down and control the contactor to disconnect; Wherein, the guard module includes: a switch unit; One end of the switch unit is connected to the control end of the contactor, and the other end of the switch unit is connected to the main control module; The switch unit of the guard module is in a closed state, specifically used to control the charging module to shut down and control the contactor to disconnect when the first communication state of the main control module is abnormal, so that the charging module stops supplying power to the battery pack module; Wherein, the charging device further comprises: a functional module; The functional module is communicatively connected with the main control module, and the guard module is further used to determine a second communication state between the main control module and the functional module, and determine a working state of the main control module based on the first communication state and the second communication state; Among them, the guard module is also connected to the power supply line between the battery pack module and the charging module, and the guard module is also used to collect voltage information and / or current information of the power supply line, and control the contactor to disconnect based on the voltage information and / or current information.

2. The charging device according to claim 1, characterized in that: The charging device further includes: an alarm module, which is communicatively connected with the guard module, and the guard module is used to send control information to the alarm module when the main control module is in an abnormal state, and the alarm module sends an alarm signal according to the control information.

3. A method for protecting a charging device, characterized in that: The method is applied to the guard module in the charging device according to any one of claims 1 to 2, and the method comprises: Acquire a first communication state between the main control module and the charging module, and determine a working state of the main control module based on the first communication state; If the first communication state is a disconnected state, determining that the main control module is in an abnormal state; When the main control module is in an abnormal state, the charging module is controlled to shut down and the contactor is controlled to disconnect.

4. The protection method for charging equipment according to claim 3, characterized in that: The controlling the charging module to shut down and the controlling the contactor to disconnect comprises: The charging module is controlled to shut down, and the contactor is controlled to disconnect after a preset time.

5. The protection method for charging equipment according to claim 3, characterized in that: The controlling the charging module to shut down and the controlling the contactor to disconnect comprises: Controlling the charging module to shut down, and obtaining voltage information and / or current information on the power supply line between the charging module and the battery pack module; Determining whether the contactor meets a disconnection condition based on the voltage information and / or the current information; If so, the contactor is controlled to be disconnected.

6. The protection method for charging equipment according to claim 3, characterized in that: The method further comprises: Determining whether the main control module recovers abnormally; After the main control module is in an abnormal recovery state, in response to a user operation, the charging module is controlled to be turned on and the contactor is controlled to be closed.

7. A computer-readable storage medium, characterized in that: The storage medium stores a computer program, which, when executed by a processor, implements the steps of the method described in any one of claims 3 to 6.

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