Charging equipment and charging system

Abstract

The invention discloses a charging device and a charging system, in the charging device, at least two sections of wires with at least two impedances are arranged between an input module and an output module of the charging device, so that when heat generated by at least one section of target wire of which the impedance is greater than the impedance of the other wires meets a fusing condition, the target wire can be fused, and the target wire can be fused. And at least one section of the target wire is fused to disconnect the input module and the output module, so that the charging process is prevented from being carried out under the condition that the charging wire is damaged, and the equipment to be charged is prevented from being damaged. Compared with the prior art, the invention provides a new solution for preventing the charging wire from being burnt out, and the device cost is reduced.

Description

Technical Field

[0001] The embodiments of the present application relate to battery technology, and relate to but are not limited to a charging device and a charging system. Background Art

[0002] At present, there are more and more electronic products, so the demand for charging cables has also increased. Due to the wide variety of usage scenarios and environments, some charging cables have been returned by the market. The main reason is that the TVS tube is short-circuited, causing the power supply to short-circuit to the ground. If it lasts for a long time, the charging cable will burn.

[0003] The existing solution to this problem is to simply add a fuse to the charging cable. However, the solution of adding a fuse is too limited and requires technicians to purchase the corresponding fuse, which is a single solution. Summary of the invention

[0004] In view of this, the charging device and the charging system provided in the embodiments of the present application can provide a new solution to avoid burning the charging cable and reduce the cost of the device. The charging device and the charging system provided in the embodiments of the present application are implemented as follows:

[0005] In a first aspect, an embodiment of the present application provides a charging device, the charging device comprising an input module and an output module, the input module and the output module being connected via at least two sections of wires connected in series, the at least two sections of wires having at least two impedances, wherein: the input module is used to receive an initial charging signal; the at least two sections of wires are used to transmit the initial charging signal and output a target charging signal to the output module, wherein each section of the wire generates heat in the process of transmitting the initial charging signal, and when the heat generated by at least one section of the target wire meets a fusing condition, the at least one section of the target wire is fused to disconnect the connection between the input module and the output module, the at least two sections of wires include the at least one section of the target wire, the impedance of the at least one section of the target wire is greater than the impedance of any other wire in the at least two sections of the wire; the output module is used to output the target charging signal.

[0006] In the above charging device, at least two sections of wires with at least two impedances are arranged between the input module and the output module of the charging device, so that when the heat generated by at least one section of the target wire with an impedance greater than the impedance of the remaining wires meets the fusing condition, at least one section of the target wire is fused to disconnect the connection between the input module and the output module, thereby avoiding the charging process when the charging line is damaged, thereby destroying the charging device. Compared with the prior art, the present application provides a new solution to avoid burning the charging line, reducing the cost of the device.

[0007] In some embodiments, the material of the at least one target wire segment has lower conductivity than the materials of the remaining wires in the at least two wire segments, and / or the cross-section of the at least one target wire segment is smaller than the cross-section of the remaining wires.

[0008] In some embodiments, the charging device is used to charge a device to be charged, the target impedance of each target wire section is determined based on the voltage of the initial charging signal and the full charge voltage of the device to be charged, and the cross-section of each target wire section is determined based on the target impedance, the resistivity of the target wire, and the length of the target wire.

[0009] In some embodiments, the at least two wires include a first wire and a second wire, the first wire is connected to the input module and the second wire respectively, and the second wire is also connected to the output module.

[0010] In some embodiments, the at least two sections of wires include a third wire, a fourth wire and a fifth wire, the charging device also includes a switch module, the switch module includes a first input end, a second input end and an output end, the first input end and the second input end are respectively connected to the input module, the output end is connected to the output module through the fifth wire, the input module and the first input end are connected through the third wire, and the input module and the second input end are connected through the fourth wire, wherein: the switch module is used to make the sub-target wire conductive with the fifth wire in an initial state, and to make the other wire between the third wire and the fourth wire conductive with the fifth wire when the sub-target wire is blown, and the sub-target wire is one of the third wire and the fourth wire.

[0011] In some embodiments, the charging device also includes an anti-shock module, a first end of the anti-shock module is connected in parallel between the output module and the input module through the target wire, and a second end of the anti-shock module is connected to the ground terminal, wherein: the anti-shock module is used to reduce the impact voltage of the initial charging signal on the ground terminal; wherein, when the anti-shock module is in an abnormal state, the heat generated by at least one section of the target wire within a preset time period meets the fusing condition.

[0012] In some embodiments, the output module includes a power output terminal and an overvoltage protection submodule, the first end of the overvoltage protection submodule is connected to the first end of the anti-shock module, and the second end of the overvoltage protection submodule is connected to the power output terminal, wherein: the overvoltage protection submodule is used to maintain the voltage value of the target charging signal within a preset voltage threshold range; the power output terminal is used to output a target charging signal whose voltage value is within a preset voltage threshold range.

[0013] In some embodiments, the overvoltage protection submodule includes a first filter capacitor and an overvoltage protector, and the first filter capacitor is respectively connected to the first end of the anti-shock module, the overvoltage protector and the ground end, wherein: the first filter capacitor is used to isolate the target charging signal from being transmitted to the ground end; the overvoltage protector is used to output a target charging signal whose voltage value is within a preset voltage threshold range.

[0014] In some embodiments, the overvoltage protection submodule also includes a second filter capacitor, which is respectively connected to the overvoltage protector, the power supply output terminal and the ground terminal, wherein: the second filter capacitor is used to isolate the target charging signal output by the overvoltage protector from being transmitted to the ground terminal.

[0015] In a second aspect, an embodiment of the present application provides a charging system, wherein the charging system includes the above-mentioned charging device and an interface converter.

[0016] It should be understood that the second aspect of the embodiment of the present application is consistent with the technical solution of the first aspect of the embodiment of the present application, and the beneficial effects achieved by each aspect and the corresponding feasible implementation methods are similar and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings herein are incorporated into the specification and constitute a part of the specification. These drawings illustrate embodiments consistent with the present application and are used together with the specification to illustrate the technical solution of the present application.

[0018] Figure 1 A schematic diagram of the structure of a charging device provided in an embodiment of the present application;

[0019] Figure 2 A schematic diagram of the structure of a charging device provided in an embodiment of the present application;

[0020] Figure 3 A schematic diagram of the structure of a charging device provided in an embodiment of the present application;

[0021] Figure 4 A schematic diagram of the structure of a charging device provided in an embodiment of the present application;

[0022] Figure 5 A schematic diagram of the structure of a charging device provided in an embodiment of the present application;

[0023] Figure 6 A schematic diagram of the structure of a charging device provided in an embodiment of the present application;

[0024] Figure 7 A schematic diagram of the structure of a charging device provided in an embodiment of the present application;

[0025] Figure 8 A schematic diagram of the structure of a charging device provided in an embodiment of the present application;

[0026] Fig. 9 A schematic diagram of the structure of a charging device provided in an embodiment of the present application;

[0027] Fig.10 A schematic diagram of the structure of a charging device provided in an embodiment of the present application;

[0028] Fig.11 A schematic diagram of the structure of a charging device provided in an embodiment of the present application;

[0029] Fig.12 A schematic diagram of the structure of a charging device provided in an embodiment of the present application;

[0030] Fig.13 A schematic diagram of the structure of a charging system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the specific technical solution of the present application will be further described in detail below in conjunction with the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application, but are not used to limit the scope of the present application.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein are only for the purpose of describing the embodiments of this application and are not intended to limit this application.

[0033] In the following description, reference is made to “some embodiments”, which describe a subset of all possible embodiments, but it will be understood that “some embodiments” may be the same subset or different subsets of all possible embodiments and may be combined with each other without conflict.

[0034] It should be pointed out that the terms "first\second\third" involved in the embodiments of the present application are used to distinguish similar or different objects, and do not represent a specific ordering of the objects. It can be understood that "first\second\third" can be interchanged in a specific order or sequence where permitted, so that the embodiments of the present application described here can be implemented in an order other than that illustrated or described here.

[0035] The embodiment of the present application provides a charging device, which can transmit charging signals to various devices to be charged during the implementation process. The devices to be charged can be various devices with information processing capabilities, for example, the devices to be charged can include personal computers, laptops, PDAs or servers, etc.; the devices to be charged can also be mobile terminals, for example, the mobile terminals can include mobile phones, car computers, tablet computers or projectors, etc.

[0036] Figure 1 A schematic diagram of a charging device provided in an embodiment of the present application is shown in FIG. Figure 1 As shown, the charging device includes an input module 101 and an output module 103, and the input module 101 and the output module 103 are connected by at least two wires in series, and the at least two wires have at least two impedances, wherein:

[0037] An input module 101, used for receiving an initial charging signal;

[0038] At least two wires are used to transmit an initial charging signal and output a target charging signal to the output module 103, wherein each wire generates heat in the process of transmitting the initial charging signal, and when the heat generated by at least one target wire 102 meets a fusing condition, at least one target wire 102 is fused to disconnect the connection between the input module 101 and the output module 103, and the at least two wires include at least one target wire 102, and the impedance of the at least one target wire 102 is greater than the impedance of any other wire in the at least two wires;

[0039] The output module 103 is used to output a target charging signal.

[0040] During the implementation process, at least two sections of wires are configured to include wires having at least two impedances. When the input module 101 receives the initial charging signal, it is transmitted to the output module 103 via at least two sections of wires. Since the wires generate heat when transmitting the initial charging signal, when the heat generated is greater than the fuse condition of a certain wire, the wire will fuse, thereby disconnecting the connection path between the input module 101 and the output module 103.

[0041] Optionally, the conductivity of the material of at least one section of the target wire 102 is lower than the conductivity of the material of the remaining wires in the at least two sections of the wires, and / or the cross-section of at least one section of the target wire 102 is smaller than the cross-section of the remaining wires.

[0042] It should be understood that by setting the conductivity of the material of the target wire 102 to be lower than the conductivity of the materials of the remaining wires, and / or the cross-section of the target wire 102 to be smaller than the cross-section of the remaining wires, it can be ensured that the impedance of the target wire 102 is greater than the impedance of any remaining wire in at least two sections of the wire, so that when the heat generated by the target wire 102 when transmitting the initial charging signal is greater than the fuse condition corresponding to the target wire 102, the target wire 102 can be fused, thereby disconnecting the connection path between the input module 101 and the output module 103, thereby protecting the charging device.

[0043] Optionally, the target impedance of each target wire 102 is determined based on the voltage of the initial charging signal and the full charging voltage of the device to be charged, and the cross-section of each target wire 102 is determined based on the target impedance, the resistivity of the target wire 102 and the length of the target wire 102.

[0044] It should be understood that, because the wire will also cause the voltage value of the initial charging signal during the transmission process to be lower than the voltage value when the input module 101 outputs it due to its own impedance, the voltage value corresponding to the target impedance of each target wire 102 when transmitting the initial charging signal should be lower than the difference between the voltage of the initial charging signal and the full charge voltage of the device to be charged. For example, if the USB input voltage is about 5V, the battery cell charging current is 1A, and the battery cell fully charged voltage is about 4.4V, then when designing the target wire 102, the resistance needs to be less than 600mΩ, that is, the target impedance of the target wire 102 at this time is 600mΩ.

[0045] After obtaining the target impedance of each section of the target wire 102, the target impedance may be used to determine the material or cross section of the target wire 102. For materials, since the conductivity of each material is different, the technician may perform an electric test on each material in advance, and measure the target impedance of each material under the same wire length and the same input voltage, thereby obtaining the corresponding relationship between the material and the impedance. After calculating the target impedance of the target wire 102, the corresponding relationship between the material and the impedance may be queried to determine which material is currently required to meet the target impedance. For cross sections, since the cross section of the wire will affect the impedance value of the wire, the calculation formula between the cross section and the impedance value R is R=ρ×L / S, wherein ρ is the resistivity of the wire, L is the length of the wire in meters, and S is the cross-sectional area of ​​the wire in square meters, that is, under the same material and the same wire length, the smaller the cross section, the larger the impedance value, and the easier the wire is to fuse.

[0046] In the above charging device, at least two sections of wires with at least two impedances are arranged between the input module 101 and the output module 103 of the charging device, so that when the heat generated by at least one section of the target wire 102 with an impedance greater than the impedance of the remaining wires meets the fusing condition, at least one section of the target wire 102 is fused to disconnect the connection between the input module 101 and the output module 103, thereby avoiding the charging process when the charging line is damaged, thereby destroying the charging device. Compared with the prior art, the present application provides a new solution to avoid burning the charging line, reducing the cost of the device.

[0047] In some embodiments, Figure 2 As shown, the at least two wires include a first wire and a second wire, the first wire is connected to the input module 101 and the second wire respectively, and the second wire is also connected to the output module 103 .

[0048] Optionally, the target wire 102 may be a first wire, a second wire, or other wire other than the first wire and the second wire connected to a connection path between the input module 101 and the output module 103. The specific setting is performed by those skilled in the art and is not limited in this application.

[0049] During the implementation process, after the initial charging signal is output from the input module 101, it passes through the first wire and the second wire in sequence until it is transmitted to the output module 103. If the target wire 102 is the first wire, that is, the impedance of the first wire is greater than the impedance of the second wire, and the heat generated by the first wire when transmitting the initial charging signal is greater than the melting point that the first wire itself can withstand, the first wire will melt, thereby disconnecting the connection between the input module 101 and the output module 103. The same applies if the target wire 102 is the second wire.

[0050] Optionally, if the target wire 102 is the first wire, that is, the impedance of the first wire is greater than the impedance of the second wire, it can be manifested as the conductivity of the material of the first wire is lower than the conductivity of the material of the second wire, or it can be manifested as the cross-section of the first wire is smaller than the cross-section of the second wire, and the present application does not impose any limitation.

[0051] In some embodiments, Figure 3 As shown, at least two wires include a third wire, a fourth wire and a fifth wire, the charging device also includes a switch module 104, the switch module 104 includes a first input end, a second input end and an output end, the first input end and the second input end are respectively connected to the input module 101, the output end is connected to the output module 103 through the fifth wire, the input module 101 and the first input end are connected through the third wire, and the input module 101 and the second input end are connected through the fourth wire, wherein:

[0052] The switch module 104 is used to connect the sub-target wire 102 with the fifth wire in the initial state, and to connect the other wire of the third wire and the fourth wire with the fifth wire when the sub-target wire 102 is blown. The sub-target wire 102 is one of the third wire and the fourth wire.

[0053] During the implementation process, the switch module 104 will default to using the sub-target wire 102 to connect with the fifth wire. During the transmission of the initial charging signal through the sub-target wire 102, if the sub-target wire 102 is blown, that is, the initial charging signal is not transmitted to the switch module 104, it will switch to another wire to connect with the fifth wire to ensure that when the sub-target wire 102 is disconnected due to other fault reasons not caused by its own wire performance, such as damage caused by human factors, another wire can be selected to continue transmitting the initial charging signal to ensure the sustainability of the charging process.

[0054] Optionally, in addition to the above-mentioned sub-target wires 102, other sub-target wires 102 may be set at other positions, for example, other sub-target wires 102 may be set between the fifth wire and the output module 103, or, an input end interface of the switch module 104, i.e., a third input end, may be added, and the third input end and the input module 101 may be respectively connected through other sub-target wires 102, so that the fifth wire can be connected to more branches.

[0055] Optionally, the switch module 104 may receive and respond to a control signal sent by a processor of the device to be charged when performing branch switching, or the switch module 104 may collect the voltage of an initial charging signal flowing into each input terminal, and perform branch switching when it is determined that the voltage value of the initial charging signal on the branch currently connected to the fifth wire is lower than a threshold.

[0056] For example, Figure 4 As shown, taking the input module as the power input terminal, the switch module 104 as a single-pole multi-throw switch K, and the cross-sections of the third wire and the fourth wire are both smaller than the cross-section of the fifth wire as an example, the single-pole multi-throw switch K includes an input port a, an input port b, and an output port, the input port a and the input port b are respectively connected to the power input terminal, the output port is connected to the output module 103 through the fifth wire, the power input terminal and the input port a are connected through the third wire, and the power input terminal and the input port b are connected through the fourth wire. In the initial state, the single-pole multi-throw switch K connects the third wire and the fifth wire, and when the third wire is disconnected, the branch is switched to connect the fourth wire with the fifth wire.

[0057] In some embodiments, Figure 5As shown, the charging device further includes an anti-shock module 105, a first end of the anti-shock module 105 is connected in parallel between the output module 103 and the input module 101 through the target wire 102, and a second end of the anti-shock module 105 is connected to the ground, wherein:

[0058] The anti-shock module 105 is used to reduce the impact voltage of the initial charging signal on the ground terminal;

[0059] When the anti-shock module 105 is in an abnormal state, the heat generated by at least one section of the target wire 102 within a preset time period satisfies the fusing condition.

[0060] It should be understood that in order to ensure the working safety of the charging device, an anti-shock module 105 connected to the ground terminal needs to be connected in parallel between the input module 101 and the output module 103 so that the charging device has a reference ground terminal. In some embodiments, if the anti-shock module 105 is in an abnormal state, the initial charging signal flows directly into the ground terminal, so that the generated heat increases suddenly, causing the target wire 102 to melt, thereby cutting off the connection with the ground section.

[0061] It should be noted that when the input module 101 and the switch module 104 are connected via multiple wires, each wire will be connected to the anti-shock module 105 via the target wire 102, so that each wire between the input module 101 and the switch module 104 can be disconnected from the anti-shock module 105 when the anti-shock module 105 is in an abnormal state.

[0062] For example, Figure 6 As shown, taking the input module 101 as the power input terminal, the output module 103 as the power output terminal, and the anti-shock module 105 as the transient voltage suppression diode TVS as an example, the power input terminal and the power output terminal are connected in sequence through the first wire and the second wire, the negative phase terminal of the TVS is connected in parallel between the output module 103 and the input module 101 through the first wire, and the positive phase terminal of the TVS is connected to the ground terminal to reduce the impact voltage of the initial charging signal on the ground terminal, wherein the cross section of the first wire is larger than the cross section of the second wire. If an abnormality occurs in the TVS, the TVS is short-circuited, the local large current, and the temperature rises rapidly. The first wire is relatively thin and has a large resistance. After a certain capacity impact, the first wire is burned out, thereby cutting off the power supply to protect the device to be charged.

[0063] In some embodiments, Figure 7 As shown, the output module 103 includes a power output terminal 1032 and an overvoltage protection submodule 1031, a first end of the overvoltage protection submodule 1031 is connected to a first end of the anti-shock module 105, and a second end of the overvoltage protection submodule 1031 is connected to the power output terminal 1032, wherein:

[0064] An overvoltage protection submodule 1031 is used to maintain the voltage value of the target charging signal within a preset voltage threshold range;

[0065] The power output terminal 1032 is used to output a target charging signal whose voltage value is within a preset voltage threshold range.

[0066] It should be understood that in order to ensure that the voltage value of the charging signal flowing into the device to be charged is within the set threshold range, an overvoltage protection submodule 1031 needs to be set at the output end 1032 to maintain the voltage value of the target charging signal within the preset voltage threshold range.

[0067] For example, Figure 8 As shown, taking the input module 101 as the power input end, the output module 103 including the power output end and the overvoltage protection submodule 1031, the overvoltage protection submodule 1031 being the overvoltage protector OVP, and the anti-shock module 105 being the transient voltage suppression diode TVS as an example, the power input end and the power output end are connected in sequence through a first wire and a second wire, the negative phase end of the TVS is connected in parallel between the output module 103 and the input module 101 through the first wire, the positive phase end of the TVS is connected to the ground end, the input end of the overvoltage protector OVP is connected to the negative phase end of the TVS through the second wire, and the output end of the overvoltage protector OVP is connected to the power output end through the second wire, wherein the cross-section of the first wire is larger than the cross-section of the second wire. If an abnormality occurs in the TVS, the TVS is short-circuited, a large local current flows, and the temperature rises rapidly, the first wire is relatively thin and has a large resistance. After a certain capacity impact, the first wire is burned out, thereby cutting off the power supply to protect the device to be charged. If the charging device works normally, the overvoltage protector OVP will maintain the voltage value of the target charging signal within the preset voltage threshold range after receiving the target charging signal to ensure the normal charging process of the device to be charged.

[0068] In some embodiments, Fig. 9 As shown, the overvoltage protection submodule 1031 includes a first filter capacitor 10311 and an overvoltage protector 10312, and the first filter capacitor 10311 is connected to the first end of the anti-shock module 105, the overvoltage protector 10312 and the ground end respectively, wherein:

[0069] The first filter capacitor 10311 is used to isolate the target charging signal from being transmitted to the ground;

[0070] The overvoltage protector 10312 is used to output a target charging signal whose voltage value is within a preset voltage threshold range.

[0071] It should be understood that in order to ensure the working safety of the charging device, multiple reference ground terminals need to be set on the transmission path of the charging device. In order to prevent the target charging signal from being transmitted to the ground terminal, it needs to be filtered by a filter capacitor to prevent the target charging signal from being transmitted to the ground terminal before being transmitted to the overvoltage protector 10312.

[0072] For example, Fig.10 As shown, taking the input module 101 as the power input terminal, the output module 103 as the power output terminal, the overvoltage protector 10312 as the OVP chip, the anti-shock module 105 as the transient voltage suppression diode TVS, and the first filter capacitor 10311 as the capacitor C1 as an example, the power input terminal and the power output terminal are connected in sequence through the first wire and the second wire, the negative phase terminal of the TVS is connected in parallel between the output module 103 and the input module 101 through the first wire, the positive phase terminal of the TVS is connected to the ground terminal, the input terminal of the overvoltage protector OVP is connected to the negative phase terminal of the TVS, the output terminal of the overvoltage protector OVP is connected to the power output terminal, and the capacitor C1 is respectively connected to the power input terminal, the overvoltage protector OVP and the ground terminal, wherein the cross-section of the first wire is larger than the cross-section of the second wire. If an abnormality occurs in the TVS, the TVS is short-circuited, a large local current flows, and the temperature rises rapidly, the first wire is relatively thin and has a large resistance. After a certain capacity impact, the first wire is burned out, thereby cutting off the power supply to protect the device to be charged. If the charging device works normally, the target charging signal will be normally transmitted to the overvoltage protector OVP. After receiving the target charging signal, the overvoltage protector OVP will maintain the voltage value of the target charging signal within the preset voltage threshold range to ensure the normal charging process of the device to be charged.

[0073] In some embodiments, Fig.11 As shown, the overvoltage protection submodule 1031 further includes a second filter capacitor 10313, and the second filter capacitor 10313 is connected to the overvoltage protector 10312, the power supply output terminal and the ground terminal respectively, wherein:

[0074] The second filter capacitor 10313 is used to isolate the target charging signal output by the voltage protector 10312 from being transmitted to the ground.

[0075] It should be understood that in order to ensure the working safety of the charging device, multiple reference ground terminals need to be set on the transmission path of the charging device. In order to prevent the target charging signal output by the voltage protector from being transmitted to the ground terminal, it needs to be filtered by a filter capacitor to isolate the target charging signal output by the voltage protector 10312 from being transmitted to the ground terminal.

[0076] For example, Fig.12As shown, taking the input module 101 as the power input terminal, the output module 103 as the power output terminal, the overvoltage protector 10312 as the OVP chip, the anti-shock module 105 as the transient voltage suppression diode TVS, the first filter capacitor 10311 as the capacitor C1, and the second filter capacitor 10313 as the capacitor C2 as an example, the power input terminal and the power output terminal are connected in sequence through the first wire and the second wire, the negative phase terminal of the TVS is connected in parallel between the output module 103 and the input module 101 through the first wire, the positive phase terminal of the TVS is connected to the ground terminal, the input terminal of the overvoltage protector OVP is connected to the negative phase terminal of the TVS, the output terminal of the overvoltage protector OVP is connected to the power output terminal, the capacitor C1 is respectively connected to the power input terminal, the overvoltage protector OVP and the ground terminal, and the capacitor C2 is respectively connected to the overvoltage protector OVP, the power output terminal and the ground terminal, wherein the cross-section of the first wire is larger than the cross-section of the second wire. If an abnormality occurs in the TVS, the TVS is short-circuited, a large local current flows, and the temperature rises rapidly, the first wire is relatively thin and has a large resistance. After a certain capacity impact, the first wire is burned out, thereby cutting off the power supply to protect the device to be charged. If the charging device works normally, the target charging signal will be normally transmitted to the overvoltage protector OVP. After receiving the target charging signal, the overvoltage protector OVP will maintain the voltage value of the target charging signal within the preset voltage threshold range to ensure the normal charging process of the device to be charged.

[0077] Fig.13 A schematic diagram of a charging system is provided for an embodiment of the present application. Fig.13 As shown, the charging system may include an interface converter 20 and a charging device 10 described in any of the above embodiments, and the interface converter 20 is used to receive an initial electrical signal, and convert the initial electrical signal into an initial charging signal and transmit it to an input module of the charging device 10, so that the input module of the charging device 10 receives the initial charging signal and starts to execute the transmission of the initial charging signal.

[0078] It should be understood that "one embodiment" or "an embodiment" or "some embodiments" mentioned throughout the specification means that specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present application. Therefore, "in one embodiment" or "in one embodiment" or "in some embodiments" appearing throughout the specification may not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner. It should be understood that in various embodiments of the present application, the size of the sequence number of the above-mentioned processes does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the present application. The above-mentioned sequence numbers of the embodiments of the present application are only for description and do not represent the advantages and disadvantages of the embodiments. The above description of each embodiment tends to emphasize the differences between the various embodiments, and the same or similar aspects can be referenced to each other. For the sake of brevity, this article will not repeat them.

[0079] The term "and / or" in this article is only a description of the association relationship of associated objects, indicating that there may be three relationships. For example, object A and / or object B can represent three situations: object A exists alone, object A and object B exist at the same time, and object B exists alone.

[0080] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0081] In the several embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. The embodiments described above are only schematic. For example, the division of the modules is only a logical function division. There may be other division methods in actual implementation, such as: multiple modules or components can be combined, or can be integrated into another system, or some features can be ignored, or not executed. In addition, the coupling, direct coupling, or communication connection between the components shown or discussed can be through some interfaces, and the indirect coupling or communication connection of devices or modules can be electrical, mechanical or other forms.

[0082] The modules described above as separate components may or may not be physically separated, and the components displayed as modules may or may not be physical modules; they may be located in one place or distributed on multiple network units; some or all of the modules may be selected according to actual needs to achieve the purpose of the present embodiment.

[0083] In addition, all functional modules in the embodiments of the present application may be integrated into one processing unit, or each module may be a separate unit, or two or more modules may be integrated into one unit; the above-mentioned integrated modules may be implemented in the form of hardware or in the form of hardware plus software functional units.

[0084] A person skilled in the art can understand that all or part of the steps of implementing the above method embodiment can be completed by hardware related to program instructions, and the aforementioned program can be stored in a computer-readable storage medium. When the program is executed, it executes the steps of the above method embodiment; and the aforementioned storage medium includes: mobile storage devices, read-only memories (ROM), magnetic disks or optical disks, etc., various media that can store program codes.

[0085] Alternatively, if the above-mentioned integrated unit of the present application is implemented in the form of a software function module and sold or used as an independent product, it can also be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the embodiment of the present application can essentially or in other words, the part that contributes to the relevant technology can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for enabling an electronic device to execute all or part of the methods described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as mobile storage devices, ROMs, magnetic disks, or optical disks.

[0086] The features disclosed in several product embodiments provided in this application can be arbitrarily combined without conflict to obtain new product embodiments.

[0087] The features disclosed in several method or device embodiments provided in this application can be arbitrarily combined without conflict to obtain new method embodiments or device embodiments.

[0088] The above is only an implementation method of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A charging device, characterized in that: The charging device comprises an input module and an output module, wherein the input module and the output module are connected via at least two wires connected in series, and the at least two wires have at least two impedances, wherein: The input module is used to receive an initial charging signal; The at least two wires are used to transmit the initial charging signal and output a target charging signal to the output module, wherein each wire generates heat in the process of transmitting the initial charging signal, and when the heat generated by at least one target wire meets a fusing condition, the at least one target wire is fused to disconnect the connection between the input module and the output module, and the at least two wires include the at least one target wire, and the impedance of the at least one target wire is greater than the impedance of any other wire in the at least two wires; The output module is used to output the target charging signal.

2. The charging device according to claim 1, characterized in that: The electrical conductivity of the material of the at least one target wire segment is lower than the electrical conductivity of the materials of the remaining wires of the at least two wire segments, and / or the cross-section of the at least one target wire segment is smaller than the cross-section of the remaining wires.

3. The charging device according to claim 2, characterized in that: The charging device is used to charge the device to be charged, the target impedance of each target wire section is determined based on the voltage of the initial charging signal and the full charging voltage of the device to be charged, and the cross-section of each target wire section is determined based on the target impedance, the resistivity of the target wire and the length of the target wire.

4. The charging device according to claim 3, characterized in that: The at least two wires include a first wire and a second wire, the first wire is connected to the input module and the second wire respectively, and the second wire is also connected to the output module.

5. The charging device according to claim 3, characterized in that: The at least two wires include a third wire, a fourth wire and a fifth wire, the charging device further includes a switch module, the switch module includes a first input end, a second input end and an output end, the first input end and the second input end are respectively connected to the input module, the output end is connected to the output module through the fifth wire, the input module and the first input end are connected through the third wire, and the input module and the second input end are connected through the fourth wire, wherein: The switch module is used to connect the sub-target wire to the fifth wire in an initial state, and to connect the other wire between the third wire and the fourth wire to the fifth wire when the sub-target wire is blown, and the sub-target wire is one of the third wire and the fourth wire.

6. The charging device according to claim 4 or 5, characterized in that: The charging device further includes an anti-shock module, a first end of the anti-shock module is connected in parallel between the output module and the input module through the target wire, and a second end of the anti-shock module is connected to the ground, wherein: The anti-shock module is used to reduce the impact voltage of the initial charging signal on the ground terminal; Wherein, when the anti-shock module is in an abnormal state, the heat generated by the at least one section of the target wire within a preset time period satisfies the fusing condition.

7. The charging device according to claim 6, characterized in that: The output module includes a power supply output terminal and an overvoltage protection submodule, wherein a first terminal of the overvoltage protection submodule is connected to a first terminal of the anti-shock module, and a second terminal of the overvoltage protection submodule is connected to the power supply output terminal, wherein: The overvoltage protection submodule is used to maintain the voltage value of the target charging signal within a preset voltage threshold range; The power output terminal is used to output a target charging signal whose voltage value is within a preset voltage threshold range.

8. The charging device according to claim 7, characterized in that: The overvoltage protection submodule includes a first filter capacitor and an overvoltage protector, wherein the first filter capacitor is connected to the first end of the anti-shock module, the overvoltage protector and the ground end respectively, wherein: The first filter capacitor is used to isolate the target charging signal from being transmitted to the ground end; The overvoltage protector is used to output a target charging signal whose voltage value is within a preset voltage threshold range.

9. The charging device according to claim 8, characterized in that: The overvoltage protection submodule further includes a second filter capacitor, which is connected to the overvoltage protector, the power output terminal and the ground terminal respectively, wherein: The second filter capacitor is used to isolate the target charging signal output by the overvoltage protector from being transmitted to the ground end.

10. A charging system, characterized in that: The charging system comprises a charging device as described in any one of claims 1 to 9 and an interface converter.

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