Charging device and mobile power supply

Abstract

The utility model relates to a charging device and a mobile power supply. A switching circuit is connected in series in a charging circuit; the control circuit is respectively connected with the switching circuit and the monitoring circuit, and the control circuit controls the on-off of the switching circuit; the control circuit is provided with a memory and a temperature comparator, the memory stores a preset temperature, a first input end of the temperature comparator is connected with the monitoring circuit to access the current temperature, a second input end of the temperature comparator is connected with the memory to access the preset temperature, and an output end of the temperature comparator is connected with a control end of the switching circuit. According to the charging device, the monitoring circuit is designed to be matched with the temperature comparator, and on-off of the switching circuit is controlled based on the current temperature, so that the charging safety problem, especially the charging wire safety problem, caused by abnormal temperature rise is well solved, and the charging device has high safety performance; on one hand, the charging device in a charging state can be protected, and on the other hand, the mobile terminal charged through the charging device can be protected.

Description

Technical Field

[0001] The present application relates to the field of battery charging, and in particular to a charging device and a mobile power source. Background Art

[0002] With the advancement of technology, electronic products are becoming increasingly thinner and smaller. Handheld devices, such as tablet computers, smart phones, audio and video players, and other essential items in daily life, all have their own chargers and charging cables to charge and transmit data to the handheld devices.

[0003] Take a power bank as an example. A power bank is also called a mobile power source. It charges the above-mentioned handheld device and transmits data through a charging device such as a charging cable. The charging cable usually includes a power supply end, a control circuit and a charging end. The power supply end is connected to an external power source and charges the handheld device through the charging end under the control of the control circuit. However, due to the improvement of the battery performance of handheld devices, the charging voltage and current are getting higher and higher, so the safety performance requirements of the charging cable are also getting higher and higher.

[0004] After testing and analysis, it was found that before a charging cable has a safety problem or causes a safety problem in a handheld device, it is usually accompanied by an abnormal increase in temperature. Utility Model Content

[0005] Based on this, it is necessary to provide a charging device and a mobile power supply.

[0006] In one embodiment, a charging device includes a power supply end, a charging end, a charging circuit, a switch circuit, a monitoring circuit, and a control circuit:

[0007] The power supply end and the charging end are connected via the charging circuit, the power supply end is used to access an external power source, the charging end is used to connect to a mobile terminal to be charged, and the switch circuit is connected in series in the charging circuit;

[0008] The control circuit is connected to the switch circuit and the monitoring circuit respectively, the control circuit is used to control the on and off of the switch circuit, and the monitoring circuit is used to obtain the current temperature of the charging end;

[0009] The control circuit is provided with a memory and a temperature comparator, the memory is used to store a preset temperature, a first input end of the temperature comparator is connected to the monitoring circuit to access the current temperature, a second input end of the temperature comparator is connected to the memory to access the preset temperature, and an output end of the temperature comparator is connected to the control end of the switch circuit.

[0010] The above-mentioned charging device, by designing a monitoring circuit in conjunction with a temperature comparator, controls the on and off of the switch circuit based on the current temperature, thereby better solving the charging safety problem caused by abnormal temperature increase, especially the charging cable safety problem, so that the charging device has higher safety performance. On the one hand, it is beneficial to protect the charging device in the charging state, and on the other hand, it is also beneficial to protect the mobile terminal charged by the charging device.

[0011] In one embodiment, the monitoring circuit includes a temperature sensor, the sensing end of the temperature sensor is in contact with or adjacent to the charging end, and is used to obtain the current temperature of the charging end, and the output end of the temperature sensor is connected to the first input end of the temperature comparator.

[0012] In one embodiment, the monitoring circuit includes a signal receiver, an input end of the signal receiver is used to receive a signal from the mobile terminal to obtain the current temperature of the mobile terminal at the charging end or the current temperature of the charging end detected by the mobile terminal, and the output end of the signal receiver is connected to the first input end of the temperature comparator.

[0013] In one of the embodiments, the monitoring circuit is used to obtain the current temperature of the charging end in real time or periodically.

[0014] In one embodiment, the charging device further includes a current detection module, which is connected to the control circuit and the charging circuit respectively, and is used to detect the current current of the charging circuit;

[0015] The control circuit is also provided with a current comparator and a timer, the memory is used to store a preset current, the first input end of the current comparator is connected to the current detection module to access the current current, the second input end of the current comparator is connected to the memory to access the preset current, the output end of the current comparator is connected to the control end of the switch circuit through the timer, and the current comparator is used to cut off the switch circuit and start the timer when the current current is less than the preset current, and to reopen the switch circuit when the timer reaches a predetermined time period.

[0016] In one embodiment, the charging device further includes a packaging structure, the charging circuit passes through the packaging structure, the switching circuit and the control circuit are sealed in the packaging structure, and the monitoring circuit is disposed in the charging end or in the packaging structure.

[0017] In one embodiment, the charging device is a charging cable.

[0018] In one embodiment, the charging device is a data cable.

[0019] In one embodiment, the charging end is an expansion connector, a standard connector, a mini USB connector, a micro USB connector, a Lightning USB connector, a Type-C USB connector, or a magnetic connector.

[0020] In one embodiment, the power supply end is an interface for connecting a power adapter, a standard connector, a mini USB connector, a micro USB connector, a Type-C USB connector, or a magnetic connector.

[0021] In one embodiment, a mobile power source includes a battery module and the charging device described in any embodiment; the power supply end of the charging device is conductively connected to the output end of the battery module, or the output end of the battery module is used as the power supply end.

[0022] In one embodiment, a mobile power source includes a battery module and a charging device; the charging device includes a power supply end, a charging end, a charging circuit, a switch circuit, a monitoring circuit and a control circuit:

[0023] The power supply end and the charging end are connected via the charging circuit, the power supply end is conductively connected to the output end of the battery module, the charging end is used to connect to the mobile terminal to be charged, and the switch circuit is connected in series in the charging circuit;

[0024] The control circuit is connected to the switch circuit and the monitoring circuit respectively, the control circuit is used to control the on and off of the switch circuit, and the monitoring circuit is used to obtain the current temperature;

[0025] The control circuit is provided with a memory and a temperature comparator, the memory is used to store a preset temperature, a first input end of the temperature comparator is connected to the monitoring circuit to access the current temperature, a second input end of the temperature comparator is connected to the memory to access the preset temperature, and an output end of the temperature comparator is connected to the control end of the switch circuit.

[0026] In one of the embodiments, the power supply end is integrally arranged with the output end of the battery module. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] FIG. 1 is a schematic structural diagram of a first embodiment of a charging device described in the present application.

[0029] FIG. 2 is a schematic diagram of an application of the embodiment shown in FIG. 1 .

[0030] FIG. 3 is an application schematic diagram of the second embodiment of the charging device described in the present application.

[0031] FIG. 4 is an application schematic diagram of the third embodiment of the charging device described in the present application.

[0032] FIG. 5 is an application schematic diagram of the fourth embodiment of the charging device described in the present application.

[0033] FIG. 6 is a schematic structural diagram of a fifth embodiment of the charging device described in the present application.

[0034] FIG. 7 is a schematic structural diagram of a sixth embodiment of the charging device described in the present application.

[0035] FIG. 8 is an application schematic diagram of the seventh embodiment of the charging device described in the present application.

[0036] FIG. 9 is an application diagram of the eighth embodiment of the charging device described in the present application.

[0037] FIG. 10 is an application schematic diagram of the ninth embodiment of the charging device described in the present application.

[0038] FIG. 11 is an application schematic diagram of the tenth embodiment of the charging device described in the present application.

[0039] FIG. 12 is a schematic structural diagram of an embodiment of a mobile power supply described in the present application.

[0040] Reference numerals:

[0041] 100. Charging device;

[0042] 110, power supply end;

[0043] Charging terminal 120, charging terminal;

[0044] 130. Charging circuit;

[0045] 140. Switching circuit;

[0046] 141. A control terminal of a switch circuit;

[0047] 150. Monitoring circuit;

[0048] 151. Temperature sensor;

[0049] 152. The sensing end of the temperature sensor;

[0050] 153. Output terminal of temperature sensor;

[0051] 154. Signal receiver;

[0052] 155. Input terminal of signal receiver;

[0053] 156. Output terminal of a signal receiver;

[0054] 160. Control circuit;

[0055] 161. Memory;

[0056] 162. Temperature comparator;

[0057] 163. A first input terminal of a temperature comparator;

[0058] 164. A second input terminal of the temperature comparator;

[0059] 165. Output terminal of the temperature comparator;

[0060] 166. Current comparator;

[0061] 167. A first input terminal of a current comparator;

[0062] 168. A second input terminal of the current comparator;

[0063] 169. Output terminal of current comparator;

[0064] 170. Timer;

[0065] 180. Current detection module;

[0066] 190. Packaging structure;

[0067] 200, external power supply;

[0068] 300. Mobile terminal;

[0069] 400. Mobile power supply;

[0070] 410. Battery module;

[0071] 411. Output end of the battery module. DETAILED DESCRIPTION

[0072] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0073] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.

[0074] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features.

[0075] In the present application, unless otherwise clearly specified and limited, a first feature being “on” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediate medium.

[0076] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as those commonly understood by those skilled in the art of the technical field of this application. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0077] The present application discloses a charging device and a mobile power supply, which include some or all of the technical features of the following embodiments; that is, the charging device and the mobile power supply include some or all of the following structures. In one embodiment of the present application, a charging device includes a power supply end, a charging end, a charging circuit, a switch circuit, a monitoring circuit and a control circuit: the power supply end and the charging end are connected through the charging circuit, the power supply end is used to access an external power supply, the charging end is used to connect a mobile terminal to be charged, and the switch circuit is connected in series in the charging circuit; the control circuit is connected to the switch circuit and the monitoring circuit respectively, the control circuit is used to control the on and off of the switch circuit, and the monitoring circuit is used to obtain the current temperature of the charging end; the control circuit is provided with a memory and a temperature comparator, the memory is used to store a preset temperature, the first input end of the temperature comparator is connected to the monitoring circuit to access the current temperature, the second input end of the temperature comparator is connected to the memory to access the preset temperature, and the output end of the temperature comparator is connected to the control end of the switch circuit. The above charging device, by designing a monitoring circuit in conjunction with a temperature comparator, controls the on and off of the switch circuit based on the current temperature, thereby better solving the charging safety problem caused by abnormal temperature increase, especially the charging line safety problem, so that the charging device has a higher safety performance, which is beneficial to protecting the charging device in the charging state on the one hand, and also beneficial to protecting the mobile terminal charged by the charging device on the other hand. The charging device and the mobile power supply are described in detail below in conjunction with Figures 1 to 12.

[0078] In one embodiment, a charging device 100 is shown in FIG1 , which includes a power supply terminal 110, a charging terminal 120, a charging circuit 130, a switch circuit 140, a monitoring circuit 150 and a control circuit 160: illustratively, the power supply terminal 110 is used to input a charging current; the charging terminal 120 is used to output a charging current; the charging circuit 130 is used to provide a charging circuit; the switch circuit 140 is used to turn on or off the charging circuit 130; the monitoring circuit 150 is used to monitor the current temperature of the target location; and the control circuit 160 is used to control the on and off of the switch circuit 140. Such a structural design is conducive to turning on and off the charging circuit 130 according to the current temperature, thereby better solving the charging safety problem caused by abnormal temperature increase, especially the charging line safety problem.

[0079] In this embodiment, the power supply end 110 is connected to the charging end 120 through the charging line 130, and the switch circuit 140 is connected in series in the charging line 130; the control circuit 160 is connected to the switch circuit 140 and the monitoring circuit 150 respectively, and the control circuit 160 can be directly connected to the monitoring circuit 150, or indirectly connected to the monitoring circuit 150 through the charging line 130. Exemplarily, in this embodiment, the switch circuit 140 is a MOS tube, and the control circuit 160 is a control chip. In this embodiment, the monitoring circuit 150 is used to obtain the current temperature of the charging end 120, that is, the target position is the charging end 120; in one embodiment, the monitoring circuit 150 is used to obtain the current temperature of the charging end 120 in real time or at a fixed time. In other embodiments, the monitoring circuit 150 can also be used to obtain the current temperature of other target positions, and other target positions include positions contacting the charging end 120 or positions adjacent to the charging end 120.

[0080] Exemplarily, in this embodiment, the charging device 100 further includes a packaging structure 190, the charging line 130 passes through the packaging structure 190, and the switch circuit 140 and the control circuit 160 are sealed and disposed in the packaging structure 190. Exemplarily, in this embodiment, the monitoring circuit 150 is disposed in the charging terminal 120; in other embodiments, the monitoring circuit 150 may also be disposed in the packaging structure 190, for example, sealed and disposed in the packaging structure 190. Such a structural design is conducive to protecting structures such as the switch circuit 140 and the control circuit 160, so that the overall structure of the charging device 100 is stable and easy to use.

[0081] 2, the power supply end 110 is used to connect to the external power supply 200, and the charging end 120 is used to connect to the mobile terminal 300 to be charged. The external power supply 200 includes a structure that directly or indirectly provides power. For example, the external power supply 200 is a converter, a plug or a battery, etc.; the mobile terminal 300 includes but is not limited to a handheld terminal or other terminal devices that can be moved and work. For example, the mobile terminal 300 is a mobile phone, a tablet or a laptop computer, etc.

[0082] In this embodiment, the control circuit 160 is provided with a memory 161 and a temperature comparator 162, the memory 161 is used to store a preset temperature, the first input terminal 163 of the temperature comparator is connected to the monitoring circuit 150 to access the current temperature, the second input terminal 164 of the temperature comparator is connected to the memory 161 to access the preset temperature, and the output terminal 165 of the temperature comparator is connected to the control terminal 141 of the switch circuit. The temperature comparator 162 is a comparator, which is named as the temperature comparator 162 to distinguish it from the current comparator 166 below. The temperature in the temperature comparator 162 is not used as a limitation on the structure of the comparator itself. For example, the temperature comparator 162 can also be called a first comparator, and the current comparator 166 can also be called a second comparator. The rest of the embodiments are similar and will not be described in detail. The preset temperature can be flexibly set and adjusted according to demand or actual conditions, and the embodiments of this application are not limited to this.

[0083] For example, in a specific application, the current temperature is higher than the preset temperature, the temperature comparator 162 outputs an electrical signal to the control end 141 of the switch circuit through the second input end 164 of the temperature comparator, and the switch circuit 140 cuts off the charging line 130. It can be understood that the memory 161, temperature comparator 162, current comparator 166 and other structural parts involved in the relevant embodiments are components that can be directly purchased from the market, and the specific comparison function and the output electrical signal are the functions of the temperature comparator 162 itself. The same is true for other structures of the power supply end 110, the charging end 120, the switch circuit 140 and the control circuit 160. The embodiments of the present application only directly apply these structural parts, and do not involve changes in the principles of the structural parts such as the power supply end 110, the charging end 120, the switch circuit 140 and the control circuit 160.

[0084] In one embodiment, as shown in FIG3 , the charging device 100 is connected to an external power source 200 and a mobile terminal 300 to be charged. Unlike the embodiment shown in FIG2 , the monitoring circuit 150 is located outside the charging terminal 120 and in contact with the charging terminal 120 to obtain the current temperature of the charging terminal 120. Such a structural design also realizes the on-off control of the switch circuit 140 based on the current temperature, so that the charging device 100 has a higher safety performance. Exemplarily, the monitoring circuit 150 obtains the current temperature of the charging terminal 120 in real time, that is, obtains the real-time temperature of the charging terminal 120. Such a structural design detects the real-time temperature of the charging terminal 120 and controls the on-off of the charging circuit based on the real-time temperature, so that the charging device 100 has a higher safety performance, thereby solving the technical problem of how to make the charging device 100 have a higher safety performance; and, compared with the traditional technology, while realizing safe charging, the detection of this embodiment is more accurate, and through the real-time temperature control, it can more intuitively reflect the real-time state of the charging device 100, and its safety performance is stronger.

[0085] In one embodiment, as shown in FIG4 , the monitoring circuit 150 includes a temperature sensor 151, the sensing end 152 of the temperature sensor is in contact with or adjacent to the charging end 120, and is used to obtain the current temperature of the charging end 120, and the output end 153 of the temperature sensor is connected to the first input end 163 of the temperature comparator. Similarly, such a structural design is conducive to controlling the on and off of the switch circuit 140 according to the current temperature of the charging end 120, thereby protecting the charging device 100 in the charging state, and protecting the mobile terminal 300 charged by the charging device 100, and better solving the charging safety problem caused by abnormal temperature increase, especially the charging line safety problem, so that the charging device 100 has higher safety performance.

[0086] In one embodiment, as shown in FIG5 , the monitoring circuit 150 includes a signal receiver 154, an input end 155 of the signal receiver is used to receive a signal from the mobile terminal 300, that is, the signal is connected to the mobile terminal 300 to obtain the current temperature of the mobile terminal 300 at the charging end 120; or the input end 155 of the signal receiver is used to receive a signal from the mobile terminal 300 to obtain the current temperature of the charging end 120 detected by the mobile terminal 300; and the output end 156 of the signal receiver is connected to the first input end 163 of the temperature comparator. Exemplarily, the input end 155 of the signal receiver shown in FIG5 is connected to the mobile terminal 300 by wireless connection, including but not limited to Bluetooth connection; in other embodiments, the input end 155 of the signal receiver can also be connected to the mobile terminal 300 by wired connection.

[0087] In one embodiment, as shown in FIG6 , the charging device 100 is connected to an external power source 200 and a mobile terminal 300 to be charged. Unlike the embodiment shown in FIG3 , the charging device 100 further includes a current detection module 180, and the current detection module 180 is respectively connected to the control circuit 160 and the charging circuit 130 for detecting the current current of the charging circuit 130; the control circuit 160 is further provided with a current comparator 166 and a timer 170, the memory 161 is used to store a preset current, and the first input terminal of the current comparator 167 is connected to the current detection module 180 to access the current current, the second input terminal 168 of the current comparator is connected to the memory 161 to access the preset current, and the output terminal 169 of the current comparator is connected to the control terminal 141 of the switch circuit through the timer 170; exemplarily, the current comparator 166 is used to cut off the switch circuit 140 and start the timer 170 when the current current is less than the preset current, and to reopen the switch circuit 140 when the timer 170 reaches a predetermined time period. Such a structural design is advantageous in that when the mobile terminal 300 is charged to a certain degree, when the mobile terminal 300 automatically switches to low current charging, i.e., trickle charging, the charging device 100 automatically pauses charging to protect the battery of the mobile terminal 300, and then resumes charging at a fixed time, in coordination with the automatic pause charging cycle; at this time, if the mobile terminal 300 continues to work and consumes power, the current current will not be less than the preset current, and the charging device 100 will continue to charge the mobile terminal 300, thereby achieving an intelligent charging effect of stopping when fully charged and continuing charging only when needed.

[0088] In one embodiment, the charging device 100 is a charging cable. Exemplarily, the charging device 100 is a mobile phone charging cable or a tablet charging cable. In other embodiments, the charging device 100 is a high-power charging cable. Exemplarily, the charging power of the high-power charging cable is greater than 50W, 100W, 200W or 300W. In one embodiment, the charging device 100 is a high-voltage charging cable. Exemplarily, the charging voltage of the high-voltage charging cable is greater than 380V, 500V, 600V or 800V. In one embodiment, the charging device 100 is a data cable for data transmission.

[0089] In one of the embodiments, the charging end 120 is an expansion connector, a standard connector, a mini USB connector, a micro USB connector, a Lightning USB connector, a Type-C USB connector, or a magnetic connector. In one of the embodiments, the power supply end 110 is an interface for connecting a power adapter, a standard connector, a mini USB connector, a micro USB connector, a Type-C USB connector, or a magnetic connector. In one of the embodiments, the charging end 120 is an expansion connector, a standard connector, a mini USB connector, a micro USB connector, a Lightning USB connector, a Type-C USB connector, or a magnetic connector; and the power supply end 110 is an interface for connecting a power adapter, a standard connector, a mini USB connector, a micro USB connector, a Type-C USB connector, or a magnetic connector. The rest of the embodiments are similar and will not be described in detail.

[0090] In one embodiment, the charging device 100 is shown in FIG. 7 , the charging end 120 is a USB connector of Type-C specification, and the power supply end 110 is a standard connector.

[0091] In one embodiment, as shown in FIG8 , the charging device 100 is used to charge a handheld device, i.e., a handheld terminal. The charging device 100 includes a charging end 120, a power supply end 110, a charging circuit 130 connected between the charging end 120 and the power supply end 110, a switch circuit 140 connected in series to the charging circuit 130, and a control circuit 160 for controlling the operation of the switch circuit 140. The control circuit 160 is also connected to a temperature sensor 151 to receive a real-time temperature sent by the temperature sensor 151 and control the operation of the switch circuit 140 according to the real-time temperature.

[0092] Specifically, the temperature sensor 151 is used to monitor the real-time temperature of the charging terminal 120 in real time, and transmit the real-time temperature to the control circuit 160. The control circuit 160 compares the real-time temperature with the preset temperature, and controls the switch circuit 140 to operate when the real-time temperature exceeds the preset temperature. The control circuit 160 compares the real-time temperature with the preset temperature, and controls the switch circuit 140 to disconnect when the real-time temperature is greater than the preset temperature. The control circuit 160 includes a comparator as a temperature comparator 162, the input end of the comparator is respectively connected to the real-time temperature and the preset temperature, and the output end is connected to the control end 141 of the switch circuit.

[0093] In one embodiment, as shown in FIG9 , the charging device 100 is used to charge a handheld device. The charging device 100 includes a charging terminal 120, a power supply terminal 110, a charging circuit 130 connected between the charging terminal 120 and the power supply terminal 110, a switch circuit 140 connected in series to the charging circuit 130, and a control circuit 160 for controlling the operation of the switch circuit 140. The charging terminal 120 charges the handheld device and includes a communication terminal that can communicate with the handheld device. The control circuit 160 is also connected to the communication terminal of the charging terminal 120 to receive the real-time temperature of the charging terminal 120 detected by the handheld device, and controls the operation of the switch circuit 140 according to the real-time temperature. Similarly, the control circuit 160 compares the real-time temperature with the preset temperature, and controls the switch circuit 140 to operate when the real-time temperature exceeds the preset temperature. The control circuit 160 compares the real-time temperature with the preset temperature, and controls the switch circuit 140 to disconnect when the real-time temperature is greater than the preset temperature. The control circuit 160 includes a comparator, the input ends of the comparator are respectively connected to the real-time temperature and the preset temperature, and the output end is connected to the control end 141 of the switch circuit. Exemplarily, in this embodiment, the charging device 100 is a data cable, and a conductive cable is connected between the power supply end 110 and the charging end 120 as a charging line 130. The charging end 120 is an expansion connector or a USB connector or a magnetic connector of standard, mini, micro, Lightning, or Type-C specifications; the power supply end 110 is an interface for connecting a power adapter or a USB connector or a magnetic connector of standard, mini, micro, or Type-C specifications.

[0094] In one embodiment, a current detection module 180 is provided in the charging device 100, and the current detection module 180 is provided in the charging circuit, i.e., the charging line 130, and is connected to the control module, i.e., the control circuit 160. When in use, the charging device 100 is connected to the mobile terminal 300, and the specific application is shown in FIG10, plug in charging; charging; record the charging current of the first period, and determine the current average value; determine whether the current average value is lower than the first threshold, otherwise continue charging, if yes, suspend charging; wait for the second period; then resume charging, i.e. continue to enter the charging state. The first period, the second period and the first threshold can be set or adjusted according to demand. Exemplarily, the first period is 60 seconds, and the current average value is the average value of the current in 60 seconds; recording the charging current of the first period can be a timed record, and exemplarily, the current value of the charging current is recorded once every 10 seconds, 20 seconds, 30 seconds or 1 minute, and each record lasts for the first period; recording the charging current of the first period can also be a cyclic record, and exemplarily, the current value of the charging current is recorded uninterruptedly, and the current average value of the charging current of the first period is calculated uninterruptedly in a first-in-first-out manner. The rest of the embodiments are similar and will not be described in detail. For example, the second period is 30 seconds, 60 seconds, 2 minutes or 5 minutes.

[0095] For example, in actual applications, when a mobile phone is being charged and used, when the mobile phone is almost fully charged, its charging current will decrease. At this time, by comparing the current value of the real-time current with the first threshold, that is, the current value of the preset current, it can be discovered in time and then the charging circuit can be cut off. If the mobile phone is kept in use, the power of the mobile phone will continue to be consumed as the mobile phone is used. At this time, the charging circuit 130 can be turned on by setting a second time period, that is, at intervals of preset time, and the real-time current value, that is, the average current value, can be compared with the preset current value, that is, the first threshold, and then the charging circuit 130, that is, the charging circuit, can be controlled, thereby realizing intelligent charging.

[0096] In one of the embodiments, the specific application is shown in FIG11. The difference from the application shown in FIG10 is that before determining whether the current average value is lower than the first threshold, a pre-judgment is added. Specifically, the charging current of the first time period is recorded, and the current average value is determined; it is determined whether the current average value exceeds the second threshold, and if so, charging is stopped, otherwise, it is continued to be determined whether the current average value is lower than the first threshold. The second threshold can be set or adjusted according to demand. Usually, the second threshold is greater than the first threshold. Such a design is conducive to stopping charging in time when the charging current is too large. On the one hand, it is conducive to protecting the charging device 100 in the charging state, and on the other hand, it is also conducive to protecting the mobile terminal 300 charged by the charging device 100, so that the charging device 100 has a higher safety performance.

[0097] In one embodiment, a mobile power supply 400 is shown in FIG. 12, which includes a battery module 410 and the charging device 100 of the embodiment shown in FIG. 1; the power supply end 110 of the charging device 100 is conductively connected to the output end 411 of the battery module. In one embodiment, a mobile power supply 400 includes a battery module 410 and a charging device 100; the charging device 100 includes a power supply end 110, a charging end 120, a charging circuit 130, a switch circuit 140, a monitoring circuit 150 and a control circuit 160: the power supply end 110 and the charging end 120 are connected via the charging circuit 130, the power supply end 110 is conductively connected to the output end 411 of the battery module, the charging end 120 is used to connect to the mobile terminal 300 to be charged, and the switch circuit 140 is connected in series in the charging circuit 130; the control circuit 160 is respectively connected to the switch circuits 140 and the monitoring circuit 150. The control circuit 160 is used to control the on and off of the switch circuit 140, and the monitoring circuit 150 is used to obtain the current temperature of the charging terminal 120; the control circuit 160 is provided with a memory 161 and a temperature comparator 162, the memory 161 is used to store a preset temperature, the first input terminal 163 of the temperature comparator is connected to the monitoring circuit 150 to access the current temperature, the second input terminal 164 of the temperature comparator is connected to the memory 161 to access the preset temperature, and the output terminal 165 of the temperature comparator is connected to the control terminal 141 of the switch circuit. The rest of the embodiments are similar and will not be described in detail.

[0098] In other embodiments, the mobile power supply 400 includes a battery module 410 and the charging device 100 described in any embodiment. In one embodiment, the output terminal 411 of the battery module is used as the power supply terminal 110; illustratively, the power supply terminal 110 is integrally provided with the output terminal 411 of the battery module. It is understandable that the mobile power supply 400 using the charging device 100 also has the beneficial technical effects of the charging device 100, which will not be described in detail here.

[0099] Exemplarily, in one embodiment, in the mobile power supply 400, the monitoring circuit 150 includes a temperature sensor 151, the sensing end 152 of the temperature sensor is in contact with or adjacent to the charging end 120, and is used to obtain the current temperature of the charging end 120, and the output end 153 of the temperature sensor is connected to the first input end 163 of the temperature comparator.

[0100] In one embodiment, in the mobile power supply 400, the monitoring circuit 150 includes a signal receiver 154, an input terminal 155 of the signal receiver is used to signal connect the mobile terminal 300 to obtain the current temperature of the mobile terminal 300 at the charging terminal 120 or the current temperature of the charging terminal 120 detected by the mobile terminal 300, and an output terminal 156 of the signal receiver is connected to the first input terminal 163 of the temperature comparator.

[0101] In one embodiment, in the mobile power supply 400 , the monitoring circuit 150 is used to obtain the current temperature of the charging terminal 120 in real time or periodically.

[0102] In one embodiment, in the mobile power supply 400, the charging device 100 also includes a current detection module 180, and the current detection module 180 is respectively connected to the control circuit 160 and the charging circuit 130, and is used to detect the current current of the charging circuit 130; the control circuit 160 is also provided with a current comparator 166 and a timer 170, and the memory 161 is used to store a preset current, the first input terminal 167 of the current comparator is connected to the current detection module 180 to access the current current, the second input terminal 168 of the current comparator is connected to the memory 161 to access the preset current, and the output terminal 169 of the current comparator is connected to the control terminal 141 of the switch circuit through the timer 170.

[0103] In one embodiment, in the mobile power supply 400, the charging device 100 also includes a packaging structure 190, the charging circuit 130 passes through the packaging structure 190, the switch circuit 140 and the control circuit 160 are sealed in the packaging structure 190, and the monitoring circuit 150 is arranged in the charging end 120 or in the packaging structure 190.

[0104] In one embodiment, in the mobile power supply 400, the charging device 100 is a charging cable.

[0105] In one embodiment, in the mobile power supply 400, the charging device 100 is a data cable.

[0106] In one embodiment, in the mobile power supply 400, the charging end 120 is an expansion connector, a standard connector, a mini USB connector, a micro USB connector, a Lightning USB connector, a Type-C USB connector, or a magnetic connector.

[0107] In one embodiment, in the mobile power supply 400, the power supply end 110 is an interface for connecting a power adapter, a standard connector, a mini USB connector, a micro USB connector, a Type-C USB connector, or a magnetic connector.

[0108] It should be noted that other embodiments of the present application also include charging devices and mobile power supplies that can be implemented by combining the technical features in the above embodiments.

[0109] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0110] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the scope of patent protection of the present application shall be subject to the attached claims.

Claims

1. A charging device (100), characterized in that: It comprises a power supply end (110), a charging end (120), a charging circuit (130), a switch circuit (140), a monitoring circuit (150) and a control circuit (160): The power supply end (110) and the charging end (120) are connected via the charging circuit (130); the power supply end (110) is used to connect to an external power source (200); the charging end (120) is used to connect to a mobile terminal (300) to be charged; and the switch circuit (140) is connected in series to the charging circuit (130); The control circuit (160) is connected to the switch circuit (140) and the monitoring circuit (150) respectively, the control circuit (160) is used to control the on and off of the switch circuit (140), and the monitoring circuit (150) is used to obtain the current temperature of the charging end (120); The control circuit (160) is provided with a memory (161) and a temperature comparator (162); the memory (161) is used to store a preset temperature; a first input end (163) of the temperature comparator is connected to the monitoring circuit (150) to access the current temperature; a second input end (164) of the temperature comparator is connected to the memory (161) to access the preset temperature; and an output end (165) of the temperature comparator is connected to a control end (141) of the switch circuit.

2. The charging device (100) according to claim 1, characterized in that: The monitoring circuit (150) comprises a temperature sensor (151), a sensing end (152) of the temperature sensor being in contact with or adjacent to the charging end (120) and used to obtain the current temperature of the charging end (120), and an output end (153) of the temperature sensor being connected to a first input end (163) of the temperature comparator.

3. The charging device (100) according to claim 1, characterized in that: The monitoring circuit (150) comprises a signal receiver (154), an input end (155) of the signal receiver being used to receive a signal from the mobile terminal (300) to obtain a current temperature of the mobile terminal (300) at the charging end (120) or a current temperature of the charging end (120) detected by the mobile terminal (300), and an output end (156) of the signal receiver being connected to a first input end (163) of the temperature comparator.

4. The charging device (100) according to claim 1, characterized in that: The monitoring circuit (150) is used to obtain the current temperature of the charging terminal (120) in real time or at a fixed time.

5. The charging device (100) according to claim 1, characterized in that: The charging device (100) further comprises a current detection module (180), wherein the current detection module (180) is respectively connected to the control circuit (160) and the charging circuit (130) and is used to detect the current current of the charging circuit (130); The control circuit (160) is further provided with a current comparator (166) and a timer (170); the memory (161) is used to store a preset current; the first input end (167) of the current comparator is connected to the current detection module (180) to access the current current; the second input end (168) of the current comparator is connected to the memory (161) to access the preset current; and the output end (169) of the current comparator is connected to the control end (141) of the switch circuit via the timer (170).

6. The charging device (100) according to claim 1, characterized in that: The charging device (100) further comprises a packaging structure (190), the charging line (130) passes through the packaging structure (190), the switch circuit (140) and the control circuit (160) are sealed and arranged in the packaging structure (190), and the monitoring circuit (150) is arranged in the charging terminal (120) or in the packaging structure (190).

7. The charging device (100) according to any one of claims 1 to 6, characterized in that: The charging device (100) is a charging cable.

8. The charging device (100) according to claim 7, characterized in that: The charging device (100) is a data cable.

9. The charging device (100) according to claim 7, characterized in that: The charging end (120) is an expansion connector, a standard connector, a mini USB connector, a micro USB connector, a Lightning USB connector, a Type-C USB connector, or a magnetic connector; or, The power supply end (110) is an interface for connecting a power adapter, a standard connector, a mini USB connector, a micro USB connector, a Type-C USB connector, or a magnetic connector.

10. A mobile power source (400), characterized in that: It comprises a battery module (410) and a charging device (100) as claimed in any one of claims 1 to 9, wherein a power supply end (110) of the charging device (100) is conductively connected to an output end (411) of the battery module, or the output end (411) of the battery module is used as the power supply end (110).

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