CN111756082A

CN111756082A - Safe charging method and related device

Info

Publication number: CN111756082A
Application number: CN201910828759.1A
Authority: CN
Inventors: 于江涛
Original assignee: Guangzhou Xaircraft Technology Co Ltd
Current assignee: Guangzhou Xaircraft Technology Co Ltd
Priority date: 2019-09-03
Filing date: 2019-09-03
Publication date: 2020-10-09

Abstract

The embodiment of the invention provides a safe charging method and a related device, and relates to the field of charging control. The method comprises the following steps: determining the working state of the charger, and cutting off the output voltage when the working state is a standby state; when the working state is a charging state, whether the rechargeable battery is abnormal or not is detected. When the rechargeable battery is abnormal, the output voltage is cut off. Therefore, the method can reduce energy loss and avoid sparking when the battery is accessed when the charger is in a standby state, and detect battery abnormity when the charger is in a charging state so as to ensure the charging safety of the battery. Therefore, the invention can adjust the output of the charger according to the actual charging condition, reduce energy loss and ensure charging safety.

Description

Safe charging method and related device

Technical Field

The invention relates to the field of charging control, in particular to a safe charging method and a related device.

Background

With the development of science and technology, the application field of rechargeable batteries is more and more extensive, and the devices to which the rechargeable batteries can be applied are more and more, so that various mobile electronic devices used by people can hardly leave the rechargeable batteries, and people pay more and more attention to the problems of the charging safety of the rechargeable batteries and the like.

At present, when a charger charges a rechargeable battery, the charger cannot well adjust the output of the charger according to the actual charging condition, so that unnecessary energy loss is caused, and potential safety hazards exist.

Therefore, how to adjust the output of the charger according to the actual charging condition to reduce unnecessary energy loss and ensure charging safety becomes a problem to be solved urgently.

Disclosure of Invention

The object of the present invention includes, for example, providing a safe charging method and related device, which can adjust its own output according to the actual charging condition, reduce energy consumption, and ensure charging safety.

Embodiments of the invention may be implemented as follows:

in a first aspect, an embodiment of the present invention provides a safe charging method applied to a charger, where the method includes: determining the working state of the charger; when the working state is a standby state, cutting off the output voltage; when the working state is a charging state, detecting whether the rechargeable battery is abnormal or not; and cutting off the output voltage when the rechargeable battery is abnormal.

In an alternative embodiment, the charger includes a power element, and the step of switching off the output voltage when the operating state is a standby state includes: when the working state is the standby state, the output voltage is cut off by controlling the power element to be closed; the step of cutting off the output voltage when the rechargeable battery is abnormal includes: and when the rechargeable battery is abnormal, the output voltage is cut off by controlling the power element to be closed.

In an optional embodiment, after the step of switching off the output voltage when the operating state is the standby state, the method further includes: detecting whether a communication connection is established with a rechargeable battery; detecting whether the rechargeable battery allows charging when a communication connection is established with the rechargeable battery; and when the rechargeable battery allows charging, charging the rechargeable battery, and determining that the working state enters a charging state.

In an alternative embodiment, the charger includes a power element, and the step of charging the rechargeable battery when the rechargeable battery allows charging includes: when the rechargeable battery is allowed to be charged, the power element is controlled to be switched on so as to charge the rechargeable battery.

In an alternative embodiment, the method further comprises: and cutting off the output voltage when the working state is a charging state and the rechargeable battery is detected to be fully charged.

In an optional embodiment, the step of detecting whether the rechargeable battery is abnormal when the operating state is the charging state includes: detecting whether a communication connection with a rechargeable battery is normal when the charger charges the rechargeable battery; and cutting off the output voltage when the communication connection between the rechargeable battery and the rechargeable battery is abnormal or charging error information sent by the rechargeable battery is received.

In a second aspect, an embodiment of the present invention provides a safety charging device applied to a charger, where the safety charging device includes: the determining module is used for determining the working state of the charger; the output control module is used for cutting off the output voltage when the working state is a standby state; the detection module is used for detecting whether the rechargeable battery is abnormal or not when the working state is a charging state; the output control module is also used for cutting off the output voltage when the rechargeable battery is abnormal.

In an optional embodiment, the charger includes a power element, and the output control module is configured to turn off the output voltage by controlling the power element to be turned off when the operating state is the standby state; the output control module is also used for cutting off the output voltage by controlling the power element to be closed when the rechargeable battery is abnormal.

In an optional embodiment, the detection module is configured to detect whether a communication connection is established with the rechargeable battery; the detection module is further used for detecting whether the rechargeable battery allows charging when communication connection is established with the rechargeable battery; the detection module is further used for charging the rechargeable battery when the rechargeable battery allows charging, and determining that the working state enters a charging state.

In an alternative embodiment, the charger includes a power element, and the output control module is configured to control the power element to turn on to charge the rechargeable battery when the rechargeable battery allows charging.

In a third aspect, an embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the secure charging method as described in any one of the foregoing embodiments.

In a fourth aspect, an embodiment of the present invention provides a charger control circuit, including a processor, configured to execute machine executable instructions to implement the secure charging method described in any one of the foregoing embodiments.

In a fifth aspect, an embodiment of the present invention provides a charger, including a housing, a charging circuit, and a control unit, where the control unit is electrically connected to the charging circuit, and both the charging circuit and the control unit are disposed in the housing; the charging circuit is used for being connected with a pluggable battery; the control chip is used for controlling the charging circuit to realize the safe charging method in any one of the preceding embodiments.

The beneficial effects of the embodiment of the invention include, for example:

the method provided by the embodiment of the invention comprises the following steps: determining the working state of the charger, and cutting off the output voltage when the working state is a standby state; when the working state is a charging state, whether the rechargeable battery is abnormal or not is detected. When the rechargeable battery is abnormal, the output voltage is cut off. Therefore, the method can reduce energy loss and avoid sparking when the battery is accessed when the charger is in a standby state, and detect battery abnormity when the charger is in a charging state so as to ensure the charging safety of the battery. Therefore, the invention can adjust the output of the charger according to the actual charging condition, reduce energy loss and ensure charging safety.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 shows a flowchart of a safe charging method provided in an embodiment of the present application.

Fig. 2 shows a flowchart of another safe charging method provided in an embodiment of the present application.

Fig. 3 shows a flowchart of another safe charging method provided in an embodiment of the present application.

Fig. 4 shows a charger fault detection early warning flowchart provided in an embodiment of the present application.

Fig. 5 is a functional block diagram of a safety charging device according to an embodiment of the present disclosure.

Fig. 6 shows a block diagram of a charger control circuit provided in an embodiment of the present application.

Fig. 7 shows a block diagram of a charger according to an embodiment of the present application.

Icon: 200-a charger; 210-a housing; 220-a charging circuit; 230-a charger control circuit; 231-a memory; 232-a communication interface; 233-a processor; 234-bus; 300-a secure charging device; 310-a determination module; 320-an output control module; 330-detection module.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. indicate an orientation or a positional relationship based on that shown in the drawings or that the product of the present invention is used as it is, this is only for convenience of description and simplification of the description, and it does not indicate or imply that the device or the element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.

In the process of implementing the technical solution of the embodiment of the present application, the inventors of the present application find that:

at present, electric drive's unmanned aerial vehicle generally adopts and can pull out to insert rechargeable battery (for example, can pull out to insert rechargeable lithium cell) as the power supply, when the unmanned aerial vehicle operation was accomplished or can pull out to insert rechargeable battery's electric quantity and exhaust, need will pull out to insert rechargeable battery and dismantle from unmanned aerial vehicle and get off the access charger and charge. And at present, can all can maintain invariable output voltage to the charger that can pull out to insert rechargeable battery charging no matter be in the state to battery charging, this can bring unnecessary energy loss to when can pull out rechargeable battery to insert the charger that maintains invariable output voltage, the phenomenon of striking sparks appears easily, make can pull out to insert rechargeable battery's joint rapid aging, cause easily that can pull out to insert rechargeable battery and damage. In addition, when the current charger charges the pluggable rechargeable battery, the output of the current charger cannot be well adjusted according to the actual charging condition, and potential safety hazards exist, for example, when the pluggable rechargeable battery is abnormal, the current charger cannot cut off the output voltage in time, which may cause charging faults of the pluggable rechargeable battery, even the battery is in fire, explosion and other situations.

In order to overcome the above drawbacks, embodiments of the present disclosure provide a safe charging method and related apparatus, which can adjust its output according to the actual charging condition, reduce energy consumption, and ensure charging safety. It should be noted that the defects of the solutions in the above prior art are the results obtained after the inventor has made practice and careful study, therefore, the discovery process of the above problems and the solutions proposed by the following embodiments of the present invention to the above problems should be the contribution of the inventor to the present invention in the course of the present invention.

Hereinafter, a safe charging method provided by the embodiment of the present application is described in detail. Referring to fig. 1, fig. 1 shows a flowchart of a safe charging method according to an embodiment of the present disclosure. The method is executed by a charger and comprises the following steps:

and S110, determining the working state of the charger.

In this embodiment, the working state of the charger may include, but is not limited to: the standby state and the charging state, wherein, the standby state is when the charger is not charging the rechargeable battery, and the charging state is when the electric appliance is charging the rechargeable battery. It can be understood that the working state of the charger is a modifiable division made for the actual working condition of the charger, and the working state of the charger in practical applications may have more different division manners, and the present application is not limited in the division of the working state of the charger, for example, the working state of the charger may further include a standby state, a charging state, and a shutdown state, where the standby state indicates that the charger has been turned on and has not been charged to the charging battery, the charging state indicates that the charger has been charged to the charging battery, and the shutdown state (e.g., a state when the energy storage charger is shut down) indicates that the charger has been shut down.

Optionally, the charger may be an energy storage charger, a nanny charger, or the like, for example, the energy storage charger may be a charger of model CEB2600 or a charger of model CEB4600, and the nanny charger may be a charger of model CM4750, and the energy storage charger and the nanny charger may charge a pluggable rechargeable battery.

And S120, cutting off the output voltage when the working state is the standby state.

In this embodiment, the charger may determine an operating state of the charger itself, and when the operating state is a standby state, the charger may cut off the output voltage. For example, when the charger is connected to the power supply, the charger first determines that the operating state is the standby state and cuts off the output voltage. In addition, when the charger is an energy storage charger, the energy storage charger can firstly determine that the working state is a standby state and cut off the output voltage when the charger is started.

S130, when the working state is the charging state, detecting whether the rechargeable battery is abnormal or not; when the rechargeable battery is abnormal, S140 is performed.

In this embodiment, the charger may determine the working state of the charger itself, and when the working state is the charging state (i.e., the charger is electrically connected to the rechargeable battery and charges the rechargeable battery), the charger may detect whether the rechargeable battery is abnormal. The abnormality of the rechargeable battery includes an internal abnormality and an external abnormality, the internal abnormality includes but is not limited to a cell balance abnormality, a temperature abnormality and a voltage and current abnormality of the battery, and the external abnormality includes but is not limited to an abnormality such as whether the rechargeable battery is correctly connected with a charger or not. It is understood that the charger can establish a communication connection with the rechargeable battery, and further detect whether the rechargeable battery has the internal abnormality and the external abnormality.

For example, the rechargeable Battery may be a pluggable smart Battery with a BMS (Battery Management System), when a user connects the pluggable smart Battery to the charger, the charger may send an invitation to establish communication information to the pluggable smart Battery, and when the pluggable smart Battery receives the invitation to establish communication information, the pluggable smart Battery replies an acknowledgement to the charger to establish communication information, so as to establish a communication connection between the charger and the pluggable smart Battery. After the charger establishes communication connection with the pluggable intelligent battery, the charger can detect states of cell balance, temperature, voltage, current and the like of the battery through the BMS so as to detect whether the rechargeable battery is abnormal or not, the charger can detect whether the rechargeable battery is abnormal or not by judging the communication connection state of the pluggable intelligent battery, and particularly, the charger can detect whether the rechargeable battery is abnormally shut down or not by judging the communication connection state of the pluggable intelligent battery (for example, when a user carelessly touches a shutdown key of the rechargeable battery to cause abnormal shutdown of the battery).

And S140, cutting off the output voltage when the rechargeable battery is abnormal.

In this embodiment, when the charger detects an abnormality of the rechargeable battery, for example, when the charger detects an abnormal cell balance, an abnormal temperature, an abnormal voltage and current, or an abnormal shutdown of the rechargeable battery, the output voltage may be cut off to reduce energy loss and ensure charging safety. Optionally, after the charger cuts off the output voltage, a prompt message in the form of sound, light and electricity may be sent out to remind the user whether the charging state of the rechargeable battery is normal.

It should be added that, for how to cut off the output voltage, in a possible embodiment, when the charger is not connected to the rechargeable battery, the charger can cut off the output voltage in a manner of gradually reducing the magnitude of the output voltage when the output voltage is cut off, so as to realize the quick shutdown of the output of the charger; when the charger is connected with the rechargeable battery, the output voltage of the charger can be immediately cut off when the output voltage of the charger is cut off, so that the rechargeable battery can be prevented from recharging the charger.

The safe charging method provided by the embodiment of the application can determine the working state of the charger; when the working state is the standby state, the output voltage is cut off; when the working state is a charging state, detecting whether the rechargeable battery is abnormal or not; when the rechargeable battery is abnormal, the output voltage is cut off. Therefore, the method can reduce energy loss and avoid sparking when the battery is accessed when the charger is in a standby state, and detect battery abnormity when the charger is in a charging state so as to ensure the charging safety of the battery. Therefore, the safe charging method provided by the embodiment of the application can adjust the output of the safe charging method according to the actual charging condition, reduce energy loss and ensure charging safety.

On the basis of fig. 1, a possible implementation manner of the complete scheme is given below, specifically referring to fig. 2, and fig. 2 shows a flowchart of another safe charging method provided in the embodiment of the present application. It should be noted that, the safety charging method provided by the embodiment of the present invention is not limited by fig. 2 and the following specific sequence, and it should be understood that, in other embodiments, the sequence of some steps in the safety charging method provided by the embodiment of the present invention may be interchanged according to actual needs, or some steps in the safety charging method may be omitted or deleted. The specific process shown in fig. 2 will be described in detail below.

And S110, determining the working state of the charger.

In the present embodiment, the operating state of the charger may include a standby state and a charging state.

And S121, when the working state is the standby state, the power element is controlled to be closed to cut off the output voltage.

In this embodiment, the charger includes a power element, which is a circuit element that continuously consumes power in the charger, and the output voltage of the charger is simultaneously cut off when the power element is turned off. Therefore, when the operating state is the standby state, the output voltage can be cut off by controlling the power element to be turned off. Since the power device that continuously consumes power is turned off and the output voltage of the charger is cut off, the method provided by the embodiment can reduce the energy loss of the charger and prevent the ignition phenomenon when the battery (such as a pluggable battery) is connected.

Optionally, the power element may be a MOS (metal oxide semiconductor) switching tube, and because the MOS switching tube has an on-resistance when being turned on, the MOS switching tube may continuously consume electric energy when being turned on for a long time, which results in unnecessary energy loss, and when the MOS switching tube is turned off, the output voltage of the charger is cut off. Therefore, when the charger is in a standby state, the MOS switch tube is controlled to be closed to cut off the output voltage, so that the energy loss of the charger can be reduced, and the ignition phenomenon generated when the pluggable battery is connected can be avoided.

In a possible embodiment, in addition to the power element for controlling the on/off of the output voltage, the charger may further include another plurality of power elements, that is, there may be a plurality of power elements in the charger, and in order to reduce energy loss of the charger, the charger may further control the plurality of powers to be turned off when the operating state is the standby state, for example, the charger may have multiple outputs, each output may control the on/off of the output voltage by one power element, and when the operating state of the charger is the standby state, the power element corresponding to the multiple output may be controlled to be turned off to cut off the multiple output voltage. It should be noted that, in some chargers, there may be a power element that is not used for controlling the on/off of the output voltage, and in order to reduce the energy loss of the charger, when the operating state of the charger is the standby state, the power element may also be controlled to be turned off.

S122, detecting whether a communication connection is established with the rechargeable battery; when the communication connection is established with the rechargeable battery, S123 is performed; when the communication connection with the rechargeable battery is not established, the process returns to step S122 to circularly detect whether the communication connection with the rechargeable battery is established, so as to ensure timely response when the communication connection with the rechargeable battery is established.

In this embodiment, the charger may implement communication connection with the rechargeable battery through wired communication connection, or implement communication connection with the rechargeable battery through wireless communication connection, and the communication connection manner between the charger and the rechargeable battery is not limited in this embodiment of the application.

Optionally, a Controller Area Network (CAN) bus contact is disposed at the output end of the charger and the input end of the rechargeable battery, and when the output end of the charger is connected to the input end of the rechargeable battery, the CAN bus contact at the output end of the charger is connected to the CAN bus contact at the input end of the rechargeable battery, so that the communication connection between the charger and the rechargeable battery CAN be realized.

S123, detecting whether the rechargeable battery allows charging; when it is detected that the rechargeable battery allows charging, S124 is performed; when it is detected that the rechargeable battery is not allowed to be charged, the process returns to step S123 to cyclically detect whether the rechargeable battery is allowed to be charged, so as to ensure that the charging requirement of the rechargeable battery can be responded in time.

In the present embodiment, the charger can detect whether the rechargeable battery allows charging based on the communication connection with the rechargeable battery. For example, by sending preset charging detection information to the rechargeable battery and determining whether to receive charging permission information fed back by the rechargeable battery, when receiving charging permission information fed back by the rechargeable battery, determining that the rechargeable battery is allowed to be charged; and when the charging permission information fed back by the rechargeable battery is not received within the preset time or the charging rejection information fed back by the rechargeable battery is received, judging that the rechargeable battery is not allowed to be charged.

And S124, charging the rechargeable battery, and determining that the working state enters a charging state.

In this embodiment, when the charger detects that the rechargeable battery is allowed to be charged, the power element is controlled to be turned on to charge the rechargeable battery, and the working state is determined to enter the charging state, where the charger may first charge the rechargeable battery and then determine that the working state enters the charging state, or determine that the working state enters the charging state while charging the rechargeable battery.

S130, when the working state is the charging state, detecting whether the rechargeable battery is abnormal or not; when the rechargeable battery is abnormal, S141 is performed to ensure the safety of the charging process; when the rechargeable battery is normal, the process returns to step S130 to cyclically detect whether the rechargeable battery is abnormal.

In this embodiment, the charger may detect whether the rechargeable battery is abnormal based on the communication connection with the rechargeable battery, for example, the charger may acquire information of charging temperature, charging voltage, and charging current inside the rechargeable battery, and determine whether the rechargeable battery is abnormal based on the information. Alternatively, the charger provided by the present application may also directly receive information about whether the rechargeable battery is abnormal, for example, receive temperature abnormality information, current abnormality information, etc. sent by the rechargeable battery, and determine whether the rechargeable battery is abnormal according to the abnormality information.

It should be noted that the charger provided in the embodiment of the present application may also directly determine whether the rechargeable battery is abnormal according to the charging state (e.g., charging voltage, charging current) of the rechargeable battery.

In an alternative embodiment, S130 specifically includes: when the charger charges the rechargeable battery, whether the communication connection between the charger and the rechargeable battery is normal can be detected; when the communication connection with the rechargeable battery is abnormal or charging error information transmitted from the rechargeable battery is received, the output voltage is cut off. For example, the rechargeable battery may manage its own charging state and transmit charging error information to the charger when a charging failure occurs. Therefore, when the charger charges the rechargeable battery and the charger detects that the communication connection with the rechargeable battery is abnormal or receives charging error information sent by the rechargeable battery, the charger can cut off the output voltage by controlling the power element to be closed, thereby ensuring the safety of the charging process.

And S141, cutting off the output voltage by controlling the power element to be closed.

In this embodiment, when the charger detects an abnormality of the rechargeable battery, the output voltage is cut off by controlling the power element to be turned off.

And S150, cutting off the output voltage when the working state is the charging state and the rechargeable battery is detected to be fully charged.

In this embodiment, the charger may detect whether the rechargeable battery is fully charged based on the communication connection with the rechargeable battery, for example, may receive the amount of power transmitted by the rechargeable battery to determine whether the rechargeable battery is fully charged. Alternatively, the charger provided by the present application may also determine whether the rechargeable battery is fully charged directly according to the charging state (e.g., charging voltage, charging current) of the rechargeable battery. The charger may cut off the output voltage when the operating state of the charger is a charging state and it is detected that the rechargeable battery is fully charged.

It can be understood that the steps of S121, S130, and S150 of the method provided in the embodiment of the present application may be executed in parallel, and there is no logical precedence relationship among the three. Also, in one possible embodiment, S150 may also be performed after S130 (when the rechargeable battery is detected to be normal), as shown in fig. 3.

It should be noted that, when the conventional charger charges the pluggable battery, the output voltage is not cut off in the standby state to reduce energy loss and avoid sparking when the pluggable battery is connected to the charger, and the method provided by the present application is not adopted to detect whether the pluggable battery is abnormal or not, and the output voltage is cut off according to the abnormal condition of the pluggable battery.

Therefore, based on the safe charging method provided in fig. 2, the safe charging method provided in this embodiment has at least the following advantages:

1. when the charger is in a standby state, the output voltage is cut off to reduce energy loss;

2. when the charger is in a standby state, the output voltage is cut off to avoid the ignition phenomenon when the pluggable battery is connected into the charger;

3. when the charger is in a charging state, the battery abnormality is detected, and the charging safety of the battery is ensured.

Further, based on the safe charging method shown in fig. 2, as to how to apply the method in practical application, the steps shown in fig. 4 may be adopted to implement:

step 1, after the charger is powered on or started, the charger directly enters a standby state, the power output is turned off (namely, the output voltage is cut off), and because the power output of the charger is in the off state and the output end of the charger is in an uncharged state, the plug-in operation of the pluggable rechargeable battery can be facilitated, the ignition phenomenon is avoided, and the energy loss of the charger is reduced.

And 2, judging whether to establish communication with the rechargeable battery, returning to the step 1 when the communication with the rechargeable battery is not established, continuously keeping the standby state and keeping the power output off. When the communication with the rechargeable battery is established, it indicates that the rechargeable battery is electrically connected to the charger, for example, the pluggable rechargeable battery is plugged into the charger, and step 3 is executed.

Step 3, judging whether the rechargeable battery is allowed to be charged, specifically, checking whether the rechargeable battery is opened to charge, and executing step 4 when the rechargeable battery is opened to charge; when the charging function of the rechargeable battery is not turned on (for example, the rechargeable battery is in a protection state when an abnormality is detected inside the rechargeable battery, and the rechargeable battery can communicate with the charger but cannot turn on the charging function), the method returns to step 1, continues to maintain the standby state, and maintains the turning-off of the power output.

And 4, entering a charging state. Meanwhile, the charger can also detect whether the communication with the rechargeable battery is normal or not and whether errors occur in the rechargeable battery or not (for example, the internal temperature of the rechargeable battery is too high, and the errors occur in the rechargeable battery due to the abnormal input voltage or input current of the rechargeable battery). When the communication is disconnected or the rechargeable battery is internally mistakenly (the rechargeable battery is closed to charge), the charger enters a standby state and the power output is closed to ensure the charging safety.

And 5, judging whether the rechargeable battery is fully charged. Specifically, whether the rechargeable battery is fully charged can be determined by detecting the actual charging capacity of the rechargeable battery. And when the rechargeable battery is fully charged, finishing the charging, returning to the step 1 to enter a standby state, closing power output, and waiting for the next charging.

In order to execute the corresponding steps in the foregoing embodiments and various possible manners, an implementation manner of the safety charging device is provided below, please refer to fig. 5, and fig. 5 shows a functional block diagram of the safety charging device provided in an embodiment of the present application. It should be noted that the basic principle and the technical effects of the safety charging device 300 provided in the present embodiment are the same as those of the above embodiments, and for the sake of brief description, no part of the present embodiment is mentioned, and reference may be made to the corresponding contents in the above embodiments. The safety charging device 300 includes: a determination module 310, an output control module 320, and a detection module 330.

The determination module 310 is used for determining the working state of the charger.

It is understood that the determining module 310 may perform S110 described above.

The output control module 320 is configured to cut off the output voltage when the operating state is the standby state, and specifically, the output control module 320 is configured to cut off the output voltage by controlling the power element to be turned off when the operating state is the standby state.

It is understood that the output control module 320 may perform the above S120, S121.

The detecting module 330 is used for detecting whether the rechargeable battery is abnormal when the operating state is the charging state.

It is understood that the detection module 330 may perform S130 described above.

The output control module 320 is further configured to cut off the output voltage when the rechargeable battery is abnormal, and specifically, the output control module 320 is configured to cut off the output voltage by controlling the power element to be turned off.

It is understood that the output control module 320 may perform the above S140, S141.

In this embodiment, the detecting module 330 is further configured to detect whether a communication connection is established with the rechargeable battery; when the communication connection with the rechargeable battery is not established, returning to detect whether the communication connection with the rechargeable battery is established or not so as to circularly detect whether the communication connection with the rechargeable battery is established or not, and ensuring timely response when the communication connection with the rechargeable battery is established.

It is understood that the detection module 330 may perform S122 described above.

In this embodiment, the detecting module 330 is further configured to detect whether the rechargeable battery allows charging when the communication connection is established with the rechargeable battery; when the rechargeable battery is detected not to be allowed to be charged, the rechargeable battery is returned to be detected whether to be allowed to be charged, so that whether the rechargeable battery is allowed to be charged or not is circularly detected, and the charging requirement of the rechargeable battery can be timely responded.

It is understood that the detection module 330 may perform S123 described above.

The output control module 320 is further configured to charge the rechargeable battery when the rechargeable battery allows charging, and determine that the operating state enters a charging state.

It is understood that the output control module 320 may perform S124 described above.

The output control module 320 is also used for cutting off the output voltage when the working state is the charging state and the rechargeable battery is detected to be fully charged.

It is understood that the output control module 320 may perform S150 described above.

Referring to fig. 6, fig. 6 is a block diagram illustrating a structure of a charger control circuit according to an embodiment of the present disclosure. The charger control circuit 230 comprises a memory 231, a communication interface 232, a processor 233 and a bus 234, the memory 231, the communication interface 232 and the processor 233 being connected via the bus 234, the processor 233 being adapted to execute executable modules, such as computer programs, stored in the memory 231.

The Memory 231 may include a Random Access Memory (RAM) and may further include a non-volatile Memory (non-volatile Memory), such as at least one disk Memory. The communication connection between the charger control circuit 230 and other electronic devices is achieved through at least one communication interface 232 (which may be wired or wireless).

The bus 234 may be an ISA (Industry Standard Architecture) bus, a PCI (Peripheral Component Interconnect) bus, an EISA (E4 Peripheral Standard Architecture) bus, or the like. Only one bi-directional arrow is shown in fig. 6, but this does not indicate only one bus or one type of bus.

The memory 231 is used for storing a program, and the processor 233 executes the program after receiving the execution instruction, so as to implement the secure charging method disclosed in the above embodiment.

An embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, and the computer program, when executed by the processor 233, implements the secure charging method disclosed in the above embodiment.

It should be understood that the configuration shown in fig. 6 is merely a schematic diagram of the configuration of the charger control circuit 230, and that the charger control circuit 230 may include more or less components than shown in fig. 6, or have a different configuration than shown in fig. 6. The components shown in fig. 6 may be implemented in hardware, software, or a combination thereof.

Referring to fig. 7, fig. 7 is a block diagram illustrating a charger according to an embodiment of the present disclosure. The charger 200 includes: a housing 210, a charging circuit 220, and a charger control circuit 230. The charging circuit 220 is electrically connected with the charger control circuit 230, the charging circuit 220 and the charger control circuit 230 are both arranged in the housing 210, and the charging circuit 220 is used for being connected with a pluggable battery and charging the pluggable battery; the charger control circuit 230 is used to control the operating state of the charger 200, and in some possible embodiments, the charger control circuit 230 may be a charger control chip. The charger control circuit 230 may implement the method of the safe charging method disclosed in the above embodiment when used for controlling the charger 200 to work, and the specific implementation manner and principle are consistent with the above embodiment and will not be described herein again. It should be noted that the charger 200 provided in the embodiment of the present application includes, but is not limited to, a nickel-metal hydride charger, a lead-acid battery charger, a lithium ion battery charger, an energy storage charger, a nanny charger, and the like.

In summary, the embodiments of the present invention provide a safe charging method and related apparatus, because the method provided by the embodiments of the present invention includes: determining the working state of the charger, and cutting off the output voltage when the working state is a standby state; when the working state is a charging state, whether the rechargeable battery is abnormal or not is detected. When the rechargeable battery is abnormal, the output voltage is cut off. Therefore, the method can reduce energy loss and avoid sparking when the battery is accessed when the charger is in a standby state, and detect battery abnormity when the charger is in a charging state so as to ensure the charging safety of the battery. Therefore, the invention can adjust the output of the charger according to the actual charging condition, reduce energy loss and ensure charging safety.

In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method can be implemented in other ways. The apparatus embodiments described above are merely illustrative, and for example, the flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.

In addition, the functional modules in the embodiments of the present invention may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.

The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes. It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. A secure charging method, applied to a charger, the method comprising:

determining the working state of the charger;

when the working state is a standby state, cutting off the output voltage;

when the working state is a charging state, detecting whether the rechargeable battery is abnormal or not;

and cutting off the output voltage when the rechargeable battery is abnormal.

2. The safe charging method according to claim 1, wherein the charger includes a power element, and the step of cutting off the output voltage when the operating state is a standby state includes:

when the working state is the standby state, the output voltage is cut off by controlling the power element to be closed;

the step of cutting off the output voltage when the rechargeable battery is abnormal includes:

and when the rechargeable battery is abnormal, the output voltage is cut off by controlling the power element to be closed.

3. The safe charging method according to claim 1, wherein after the step of cutting off the output voltage when the operation state is a standby state, the method further comprises:

detecting whether a communication connection is established with a rechargeable battery;

detecting whether the rechargeable battery allows charging when a communication connection is established with the rechargeable battery;

and when the rechargeable battery allows charging, charging the rechargeable battery, and determining that the working state enters a charging state.

4. The secure charging method according to claim 3, wherein the charger includes a power element, and the step of charging the rechargeable battery when the rechargeable battery allows charging includes:

when the rechargeable battery is allowed to be charged, the power element is controlled to be switched on so as to charge the rechargeable battery.

5. The secure charging method of claim 1, further comprising:

and cutting off the output voltage when the working state is a charging state and the rechargeable battery is detected to be fully charged.

6. The safe charging method according to claim 3, wherein the step of detecting whether the rechargeable battery is abnormal when the operating state is the charging state comprises:

detecting whether a communication connection with a rechargeable battery is normal when the charger charges the rechargeable battery;

and cutting off the output voltage when the communication connection between the rechargeable battery and the rechargeable battery is abnormal or charging error information sent by the rechargeable battery is received.

7. A secure charging apparatus, for use with a charger, the apparatus comprising:

the determining module is used for determining the working state of the charger;

the output control module is used for cutting off the output voltage when the working state is a standby state;

the detection module is used for detecting whether the rechargeable battery is abnormal or not when the working state is a charging state;

the output control module is also used for cutting off the output voltage when the rechargeable battery is abnormal.

8. The apparatus of claim 7, wherein the charger comprises a power element, and the output control module is configured to turn off the output voltage by controlling the power element to be turned off when the operating state is the standby state;

the output control module is also used for cutting off the output voltage by controlling the power element to be closed when the rechargeable battery is abnormal.

9. The apparatus of claim 7, wherein the detecting module is configured to detect whether a communication connection is established with the rechargeable battery;

the detection module is further used for detecting whether the rechargeable battery allows charging when communication connection is established with the rechargeable battery;

the detection module is further used for charging the rechargeable battery when the rechargeable battery allows charging, and determining that the working state enters a charging state.

10. The apparatus of claim 9, wherein the charger comprises a power element, and the output control module is configured to charge the rechargeable battery by controlling the power element to turn on when the rechargeable battery allows charging.

11. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the secure charging method according to any one of claims 1 to 6.

12. A charger control circuit comprising a processor for executing machine executable instructions to implement the secure charging method of any of claims 1-6.

13. A charger is characterized by comprising a shell, a charging circuit and a charger control circuit, wherein the charger control circuit is electrically connected with the charging circuit, and the charging circuit and a control unit are arranged in the shell;

the charging circuit is used for being connected with a pluggable battery;

the control chip is used for controlling the charging circuit to realize the safe charging method according to any one of claims 1 to 6.