Mobile charging device

Abstract

The utility model discloses a mobile charging device which comprises a plurality of charging modules, a plurality of charging units and a switch gating circuit, the plurality of charging modules are connected in parallel with one end of the switch gating circuit, and the plurality of charging units are connected in parallel with the other end of the switch gating circuit. The switch gating circuit is used for gating at least one charging module and one charging unit, so that one charging module charges one battery unit, or / and at least two charging modules are output in parallel to charge one battery unit, and therefore, the number of the used charging modules can be flexibly increased or decreased according to the requirements of a charged device; waste of charging power and charging time is avoided, the charging effect is improved, and use is more flexible and convenient.

Description

Technical Field

[0001] The utility model relates to a charging device, in particular to a mobile charging device with modularized charging units which can be flexibly added or deleted according to the needs of a charged device. Background Art

[0002] Charging equipment for electric vehicles includes fixed charging piles, mobile charging vehicles, mobile charging devices, etc. In order to improve charging efficiency, it is generally practiced to set up multiple charging modules in the charging equipment so as to use the multiple charging modules to charge the batteries of multiple electric vehicles simultaneously.

[0003] However, most of the charging modules of existing charging equipment are used for a single function, that is, each charging module operates independently to charge the battery of the electric vehicle electrically connected thereto. For example, in the intelligent charging system disclosed in Patent No. TWI827451, a plurality of independent battery units 20 are provided to charge the battery unit 3 of the external vehicle 2 respectively. During the charging process, each battery unit 20 operates independently. After the external vehicle 2 is fully charged, the control module 30 controls the battery unit 20 to automatically stop charging to avoid overcharging the external vehicle 2. Existing charging equipment used for a single function cannot flexibly increase or decrease the number of charging modules according to the charging requirements of different batteries. Especially when high-power charging is required, the inability to increase the charging module results in slower charging and a waste of time.

[0004] Therefore, it is necessary to provide a mobile charging device with modular charging modules that can be flexibly added or deleted according to the needs of the charged device to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a mobile charging device with modular charging modules that can be flexibly added or deleted according to the needs of the charged device.

[0006] To achieve the above-mentioned purpose, the technical solution of the utility model is: to provide a mobile charging device, which includes multiple charging modules, multiple charging units, a switch selection circuit, and a control module; wherein, the multiple charging modules are arranged in parallel and are respectively used to provide a charging power source; each charging unit is arranged in parallel and is respectively used to electrically connect to a battery unit, and each charging unit is also used to receive the charging power source and output it to the battery unit for charging; the switch selection circuit is electrically connected between each charging module and each charging unit, and the switch selection circuit is also electrically connected to the control module, and the switch selection circuit is used to select at least one charging module and one charging unit according to the output signal of the control module, so that one charging module charges one battery cell, or / and at least two charging modules are output in parallel to charge one battery cell.

[0007] Preferably, the switch selection circuit includes a plurality of switch modules, each of which is electrically connected between the output ends of two adjacent charging modules in parallel; or each of which is arranged between the corresponding charging module and the charging unit; and each of which is electrically connected to the control module; each of which is closed or opened according to the output signal of the control module, and each of which is opened so that one of the charging modules charges one of the battery cells through one of the charging units; and by closing a certain number of the switch modules, at least two of the charging modules output in parallel to charge one of the battery cells.

[0008] Preferably, by closing a certain switch module, at least two of the charging modules that are arranged in parallel and adjacent to each other are output in parallel to charge one of the battery cells, or at least any two of the charging modules are output in parallel to charge one of the battery cells.

[0009] Preferably, when only one of the charging units is electrically connected to the battery unit, each of the switch modules is closed so that all of the charging modules output in parallel to charge the battery unit; when each of the charging units is electrically connected to the battery unit respectively, each of the switch modules is disconnected so that each of the charging modules can independently charge the battery unit electrically connected to each of the charging units.

[0010] Preferably, the switch module is a relay contact switch.

[0011] Preferably, the gating mode of each of the switch modules is preset in the control module through firmware.

[0012] Preferably, the mobile charging device further comprises a detection module, wherein the detection module is electrically connected to the control module and each of the charging units, and the detection module is used to detect whether each of the charging units is electrically connected to the battery unit.

[0013] Preferably, the detection module is also used to detect the battery status of each of the battery cells, and the battery status includes at least one of power percentage, voltage, current and temperature.

[0014] Preferably, the mobile charging device further comprises a display module, wherein the display module is electrically connected to the control module and is used to display the battery status.

[0015] Preferably, the mobile charging device further comprises a reset module, wherein the reset module is electrically connected to the control module and is used to reset the mobile charging device.

[0016] Preferably, the charging unit is a USB interface.

[0017] Compared with the prior art, the mobile charging device of the utility model is provided with a switch gating circuit to electrically connect multiple charging modules and multiple charging units arranged in parallel, and the switch gating circuit is used to select at least one charging module and one charging unit, so that at least two charging modules are output in parallel to charge a battery unit, or / and a charging module charges a battery unit. Therefore, the number of charging modules used can be flexibly increased or decreased according to the needs of the charged device, so as to realize fast charging of a single battery unit or / and simultaneous charging of multiple battery units, avoid waste of charging power and charging time, improve charging effect, and be more flexible and convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a three-dimensional structural diagram of the mobile charging device of the utility model.

[0019] Figure 2 It is a principle block diagram of the mobile charging device of the utility model.

[0020] Figure 3 It is a schematic diagram of a preferred embodiment of the utility model.

[0021] Figure 4 It is a schematic diagram of another preferred embodiment of the utility model.

[0022] Figure 5 yes Figure 3 A schematic diagram of a usage status.

[0023] Figure 6 yes Figure 3 Another schematic diagram of the usage state.

[0024] Figure 7 yes Figure 3 Another schematic diagram of the usage status.

[0025] Figure 8 It is a schematic diagram of the state of the mobile charging device of the utility model being used in parallel. DETAILED DESCRIPTION

[0026] The embodiments of the present invention are now described with reference to the accompanying drawings, in which similar element numbers represent similar elements. It should be noted that the orientation descriptions involved in the present invention, such as the orientations or positional relationships indicated by up, down, left, right, front, and back, are all based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the technical solutions of the present application or / and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application.

[0027] Combine first Figure 1-Figure 8 As shown, the mobile charging device 100 provided by the utility model is particularly suitable for charging the battery unit of an electric vehicle, and the electric vehicle can be an electric bicycle, an electric motorcycle, an electric sightseeing car, an electric patrol car, etc., but is not limited thereto. Of course, the mobile charging device 100 can also be used to charge the battery units of other devices. Compared with a charging pile, the mobile charging device 100 of the utility model has the advantages of flexibility and convenience.

[0028] Let's combine Figure 1-Figure 7 As shown, in the present invention, the mobile charging device 100 includes a plurality of charging modules 110, a plurality of charging units 120, a switch gating circuit 130, and a control module 140. Among them, the plurality of charging modules 110 are connected in parallel to one end of the switch gating circuit 130, and each charging module 110 is used to provide a charging power source; the plurality of charging units 120 are connected in parallel to the other end of the switch gating circuit 130, and each charging unit 120 is used to electrically connect to the battery unit 200 of the electric vehicle, and each charging unit 120 is also used to receive the charging power source and output it to the battery unit 200 for charging. The switch gating circuit 130 is also electrically connected to the control module 140, and the switch gating circuit 130 is used to select at least one charging module 110 and one charging unit 120 according to the output signal of the control module 140, so that one charging module 110 charges one battery unit 200, or / and at least two charging modules 110 are connected in parallel to output to charge one battery unit 200. In this way, multiple battery units 200 can be charged simultaneously or / and a single battery unit 200 can be quickly charged, so the charging module 110 can be added or deleted according to the needs of the charged device, and the charging is more flexible and convenient, and the charging efficiency is improved.

[0029] Combine the following Figure 2-Figure 7 As shown, in the present invention, the switch gating circuit 130 includes a plurality of switch modules 131. Each switch module 131 is electrically connected between the output ends of two adjacent charging modules 110 in parallel, and each charging module 110 can select two adjacent charging modules 110 in parallel; or each switch module 131 is respectively arranged between each charging module 110 and each charging unit 120, and any two charging modules 110 can be selected through each switch module 131, that is, it is not limited to selecting two adjacent charging modules 110. Therefore, by closing a certain number of switch modules 131, at least two charging modules 110 can be output in parallel to charge one battery cell 200, thereby realizing fast charging of the battery cell 200; and when each switch module 131 is disconnected, one charging module 110 can charge one battery cell 200, thereby charging multiple battery cells 200 at the same time.

[0030] In the present invention, the control module 140 is electrically connected to each switch module 131, and the control module 140 presets the gating mode of each switch module 131, and each switch module 131 is closed or opened according to the output signal of the control module 140 to realize different charging modes. In one embodiment of the present invention, the charging mode includes: 1. Each charging module 110 is connected in series with a charging unit 120, so that each charging module 110 charges a battery cell 200 through a charging unit 120, thereby making multiple charging modules 110 charge multiple battery cells 200 independently, that is, charging multiple battery cells 200 at the same time; 2. At least two charging modules 110 output in parallel to charge a battery cell 200, so as to realize fast charging of a single battery cell 200; 3. One charging module 110 independently charges a battery cell 200 and at least two charging modules 110 output in parallel to charge a battery cell 200 coexist. Of course, the charging mode is not limited to the aforementioned method, and can also be flexibly set according to needs.

[0031] In the present invention, the control module 140 preferably adopts a microcontroller unit (MCU), and presets the selection mode of the switch module 131 through firmware to control the on and off of the switch module 131, thereby controlling the output quantity of the charging unit 120, and achieving a charging power of 660W to 2640W.

[0032] In the present invention, the charging unit 120 is preferably a USB interface, which makes it easier to connect to the electric vehicle. In a specific embodiment, the charging unit 120 uses a Type-A interface, which has the advantages of good compatibility and high-speed transmission. It is understandable that the charging unit 120 can also be a charging port of other forms.

[0033] Continue to combine Figure 2-Figure 7 As shown, in one embodiment of the utility model, according to the number of battery cells 200 electrically connected to each charging unit 120, the gating mode of each switch module 131 is preset to obtain different charging modes. Specifically, one, when each charging unit 120 is electrically connected to a battery cell 200, each switch module 131 is disconnected, so that each charging module 110 is connected in series with a charging unit 120, and each charging module 110 independently charges the battery cell 200 electrically connected to the charging unit 120, thereby realizing the simultaneous charging of multiple battery cells 200. Two, when only some charging units 120 are electrically connected to battery cells 200, the corresponding switch module 131 is closed, so that at least two charging modules 110 are output in parallel to charge a battery cell 200. In this mode, multiple battery cells 200 are charged simultaneously, and each battery cell 200 is fast charged. 3. At least two charging modules 110 are connected in parallel to output to charge a battery cell 200 and one charging module 110 is connected to charge a battery cell 200. In this mode, multiple battery cells 200 are charged simultaneously, and some battery cells 200 are charged quickly. 4. When only one charging unit 120 is electrically connected to a battery cell 200, each switch module 131 is closed to enable all charging modules 110 to output in parallel to charge the battery cell 200, thereby realizing fast charging of a single battery cell 200. It can be understood that the charging mode is not limited to that in this embodiment and can be flexibly set as needed.

[0034] Continue to combine Figure 2-Figure 7 As shown, the mobile charging device 100 is further provided with a detection module 150, which is electrically connected to the control module 140 and each charging unit 120, and is used to detect whether each charging unit 120 is electrically connected to a battery unit 200. The control module 140 outputs a corresponding control signal according to the number of battery units 200 detected by the detection module 150 to turn on and off the corresponding switch module 131, so as to charge the battery unit 200 according to a preset charging mode.

[0035] More preferably, the detection module 150 is also used to detect the battery status of each battery unit 200. After the control module 140 obtains the battery status detected by the detection module 150, the battery status is output and displayed. In one embodiment, the battery status of each battery unit 200 can be monitored through the UI, but is not limited thereto.

[0036] See again Figure 2 As shown, in one embodiment of the present invention, the mobile charging device 100 further includes a display module 160, which is electrically connected to the control module 140 and is used to display the battery status output by the control module 140. In this embodiment, the battery status includes at least one of the relative state of charge (RSOC), voltage, current, and temperature, preferably including the aforementioned four states. Of course, the battery status is not limited to the aforementioned four states.

[0037] Furthermore, the mobile charging device 100 further includes a reset module 170, which is electrically connected to the control module 140 and is used to reset the mobile charging device 100. The control module 140 can be a physical button or software, so it can be manually pressed or set to automatically reset (Reset) to reset the charging curve, thereby making the RSOC value more accurate.

[0038] Next, combine the attached Figure 3-Figure 7 As shown, the specific setting method and use status of the switch gating circuit 130 in the preferred embodiment of the utility model are explained.

[0039] See first Figure 3 , Figure 7As shown, in a preferred embodiment of the present utility model, the mobile charging device 100 includes N charging modules 110 and N charging units 120; wherein N is a positive integer greater than or equal to 2. Each charging module 110 is arranged in series with a charging unit 120, and a charging module 110 and a charging unit 120 connected in series constitute a charging circuit for charging a battery unit 200. In other words, the mobile charging device 100 includes N parallel charging circuits. In this embodiment, the switch selection circuit 130 includes N-1 switch modules 131, and each switch module 131 is electrically connected between the output ends of two parallel and adjacent charging modules 110. Therefore, closing the corresponding switch module 131 can make at least two parallel and adjacent charging modules 110 output in parallel to charge a battery unit 200. When each switch module 131 is turned off, the N parallel charging circuits charge the battery units 200 electrically connected to each charging unit 120 independently.

[0040] Continue to view Figure 3 As shown, in a specific embodiment, the mobile charging device 100 includes four charging modules 110 and four charging units 120. The switch selection circuit 130 includes three switch modules 131. Each charging module 110 is arranged in series with a charging unit 120, thereby forming four charging circuits arranged in parallel. A switch module 131 is electrically connected between the output ends of two adjacent charging modules 110. Therefore, when any switch module 131 is closed, the two charging modules 110 electrically connected thereto can be selected, that is, the two charging modules 110 arranged in parallel and adjacent to each other are output in parallel. As for the specific number of closed switch modules 131, it is flexibly preset according to the charging needs, and a certain number of charging modules 110 are selected by turning on and off a certain number of switch modules 131, so that at least two charging modules 110 are output in parallel to charge a battery unit 200.

[0041] In this specific embodiment, the switch module 131 is a relay contact switch, and the two ends of each relay contact switch are electrically connected to the output ends of the two charging modules 110, and the control end of each relay contact switch is electrically connected to the control module 140. According to the output signal of the control module 140, each relay contact switch is closed or opened, thereby selecting the corresponding charging module 110. Of course, the switch module 131 can also use other switch elements.

[0042] Combine the following Figure 3 , Figure 5-7As shown, in this specific embodiment, according to the number of battery cells 200 electrically connected to each charging unit 120, the gating mode of each switch module 131 is preset in the control module 140 through firmware, so as to obtain at least the following charging modes:

[0043] See also Figure 5 As shown, when only one charging unit 120 is electrically connected to a battery cell 200 , the three switch modules 131 are preset to be closed, so that the four charging modules 110 output in parallel to charge the battery cell 200 , thereby realizing fast charging of the single battery cell 200 .

[0044] See also Figure 6 As shown, when some charging units 120 are electrically connected to battery cells 200, the switch module 131 between two adjacent charging modules 110 is preset to be closed. In this specific embodiment, four charging modules 110 are set as two groups, and two adjacent charging modules 110 are set as one group from top to bottom, thereby obtaining two groups of charging circuits, and each group of charging circuits can operate independently. Specifically, the two charging modules 110 in each group of charging circuits are output in parallel to charge a battery cell 200. At this time, any charging unit 120 in each group is electrically connected to a battery cell 200, and the battery cell 200 is charged through the parallel output of the two charging modules 110. Figure 6 As shown, a charging unit 120 in the first charging circuit is electrically connected to a battery cell 200, and a charging unit 120 in the second charging circuit is electrically connected to a battery cell 200. Therefore, the two charging modules 110 in each charging circuit are output in parallel to charge one battery cell 200. In this charging mode, the mobile charging device 100 can simultaneously output and charge two battery cells 200 in parallel, which not only realizes fast charging of the battery cell 200, but also increases the number of battery cells 200, thereby effectively improving the charging efficiency.

[0045] Understandably, this is not Figure 6 The charging mode shown is limited. For example, three charging modules 110 can also be preset to output in parallel to charge one battery cell 200, and at this time, the two switch modules 131 between the three adjacent charging modules 110 are closed. The remaining charging module 110 can independently charge another battery cell 200. In this mode, three charging modules 110 output in parallel to charge one battery cell 200 and one charging module 110 independently charges one battery cell 200 coexist, and the charging method is more flexible.

[0046] See also Figure 7As shown, when the four charging units 120 are electrically connected to the battery units 200 respectively, the three preset switch modules 131 are all disconnected, so that the four charging modules 110 are connected to the four charging units 120 respectively, thereby forming four independent charging circuits, and the four charging modules 110 are used to charge the four battery units 200 independently, so that multiple battery units 200 can be charged simultaneously.

[0047] Of course, it is not limited to that all four charging units 120 are electrically connected to the battery unit 200 for independent charging. When some charging units 120 are electrically connected to the battery unit 200, independent charging is also possible. Figure 6-7 As shown, for example, in Figure 6 When the two charging units 120 in each group are electrically connected to the battery unit 200, that is, Figure 7 If only the upper two battery cells 200 or only the lower two battery cells 200 are connected, the switch module 131 between the two charging modules 110 in each group is disconnected so that each charging module 110 charges one battery cell 200 independently, that is, the two charging modules 110 charge two battery cells 200 independently.

[0048] It is understandable that the charging modes are not limited to the specific charging modes listed above, and more charging modes can actually be preset through firmware according to charging requirements.

[0049] See below Figure 4 As shown, in another preferred embodiment of the utility model, the difference from the above embodiment is that the switch gating circuit 130 is different. In this embodiment, the switch gating circuit 130 includes N switch modules 131, each switch module 131 is arranged between a corresponding charging module 110 and a charging unit 120, and each switch module 131 can select any two charging modules 110. In other words, when a certain switch module 131 is closed, any two charging modules 110 can be output in parallel to charge a battery unit 200, and it is not limited to selecting two adjacent charging modules 110 for parallel output. For example, in a specific embodiment, four switch modules 131 are set, and each switch module 131 is arranged between a corresponding charging module 110 and a charging unit 120. In this embodiment, the charging mode of the mobile charging device 100 is the same as that in the above embodiment, and will not be repeated.

[0050] Next, continue to combine Figure 3 , Figure 5-7As shown, taking this specific embodiment as an example, the use state of the mobile charging device 100 is described. When in use, if the detection module 150 detects that any charging unit 120 is electrically connected to a battery unit 200, the control module 140 outputs a control signal to the corresponding switch module 131 according to the number and position of the battery unit 200, so that the corresponding switch module 131 is closed according to the control signal, so that at least two charging modules 110 are output in parallel to charge the battery unit 200, or / and one charging module 110 charges one battery unit 200.

[0051] like Figure 5 As shown, when it is detected that any charging unit 120 is electrically connected to a battery cell 200 and there is only one battery cell 200, the control module 140 controls the three switch modules 131 to be closed, so that the four charging modules 110 output in parallel to charge the battery cell 200, thereby realizing fast charging of the single battery cell 200.

[0052] like Figure 6 As shown, since two adjacent charging modules 110 are sequentially arranged as a group from top to bottom, there are two charging circuits. Therefore, if the detection module 150 detects that any charging unit 120 in each charging circuit is electrically connected to the battery unit 200, the control module 140 outputs a control signal to close the switch module 131 in each charging circuit, so that the two charging modules 110 in the charging circuit are connected in parallel to charge the battery unit 200. Figure 6 As shown in FIG, two battery cells 200 are respectively and simultaneously rapidly charged, which improves the charging efficiency and increases the number of battery cells 200. Of course, the two charging circuits can each only rapidly charge one battery cell 200.

[0053] According to different charging modes set, if the setting is that three charging modules 110 are connected in parallel to charge one battery unit 200 and one charging module 110 charges one battery unit 200 independently, when it is detected that any charging unit 120 in the first group of charging circuits is electrically connected to a battery unit 200, the control module 140 outputs a control signal to close both switch modules 131 in the group of charging circuits, so that the three charging modules 110 are connected in parallel to charge the battery unit 200. At the same time, another charging module 110 charges the battery unit 200 electrically connected thereto independently.

[0054] like Figure 7As shown, when the detection module 150 detects that the four charging units 120 are respectively electrically connected to the battery units 200, the control module 140 outputs a control signal to disconnect the three switch modules 131, so that the four charging modules 110 are respectively connected to the four charging units 120 to obtain four independent charging circuits, thereby enabling the four charging modules 110 to charge the four battery units 200 independently and realize the simultaneous charging of multiple battery units 200.

[0055] Further integration Figure 6-7 As shown, a special case is Figure 6 When the two charging units 120 in each charging circuit are electrically connected to the battery unit 200, that is, Figure 7 Only the upper two battery cells 200 or only the lower two battery cells 200 are connected. At this time, the control module 140 controls the switch module 131 between the two charging modules 110 in each group to be disconnected, so that each charging module 110 charges one battery cell 200 independently.

[0056] See also Figure 8 As shown, in the present invention, a plurality of mobile charging devices 100 can be used in parallel, preferably at least 8 can be used in parallel. Of course, this is not limited thereto.

[0057] In summary, in the mobile charging device 100 of the present invention, a switch gating circuit 130 is provided to electrically connect a plurality of charging modules 110 and a plurality of charging units 120 arranged in parallel, and at least one charging module 110 and a charging unit 120 are selected through the switch gating circuit 130, so that at least two charging modules 110 are output in parallel to charge a battery unit 200, or / and a charging module 110 charges a battery unit 200. Therefore, the number of charging modules 110 used can be flexibly increased or decreased according to the needs of the charged device, so as to realize fast charging of a single battery unit 200 or / and simultaneous charging of multiple battery units 200, thereby avoiding waste of charging power and charging time, improving charging effect, and making use more flexible and convenient.

[0058] The above disclosure is only the preferred embodiment of the present invention, which certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the scope of the patent application of the present invention are still within the scope covered by the present invention.

Claims

1. A mobile charging device, characterized in that: include: Control module; A plurality of charging modules, wherein the plurality of charging modules are arranged in parallel and are respectively used to provide a charging power source; A plurality of charging units, each of which is arranged in parallel and is respectively used to electrically connect to a battery unit, and each of which is also used to receive the charging power and output it to the battery unit for charging; A switch enabling circuit, the switch enabling circuit is electrically connected between each of the charging modules and each of the charging units, and the switch enabling circuit is also electrically connected to the control module, and the switch enabling circuit is used to enable at least one of the charging modules and one of the charging units according to an output signal of the control module, so that one of the charging modules charges one of the battery cells, or / and enables at least two of the charging modules to output in parallel to charge one of the battery cells.

2. The mobile charging device according to claim 1, characterized in that: The switch gating circuit includes a plurality of switch modules, each of which is electrically connected between the output ends of two adjacent charging modules connected in parallel; or each of which is arranged between the corresponding charging module and the charging unit; and each of which is electrically connected to the control module; Each of the switch modules is closed or opened according to the output signal of the control module, and each of the switch modules is opened so that a charging module charges a battery cell through a charging unit; by closing a certain number of the switch modules, at least two of the charging modules output in parallel to charge a battery cell.

3. The mobile charging device according to claim 2, characterized in that: By closing a certain switch module, at least two of the charging modules that are connected in parallel and adjacent to each other can output in parallel to charge one of the battery cells, or at least any two of the charging modules can output in parallel to charge one of the battery cells.

4. The mobile charging device according to claim 2, characterized in that: When only one of the charging units is electrically connected to the battery unit, each of the switch modules is closed so that all of the charging modules output in parallel to charge the battery unit; When each of the charging units is electrically connected to the battery unit, each of the switch modules is disconnected so that each of the charging modules can charge the battery unit electrically connected to each of the charging units independently.

5. The mobile charging device according to any one of claims 2 to 4, characterized in that: The switch module is a relay contact switch.

6. The mobile charging device according to any one of claims 2 to 4, characterized in that: The gating mode of each switch module is preset in the control module through firmware.

7. The mobile charging device according to any one of claims 1 to 4, characterized in that: It also includes a detection module, which is electrically connected to the control module and each of the charging units, and is used to detect whether each of the charging units is electrically connected to the battery unit.

8. The mobile charging device according to claim 7, characterized in that: The detection module is also used to detect the battery status of each of the battery cells, and the battery status includes at least one of power percentage, voltage, current, and temperature.

9. The mobile charging device according to claim 8, characterized in that: It also includes a display module, which is electrically connected to the control module and is used to display the battery status.

10. The mobile charging device according to any one of claims 1 to 4, characterized in that: It also includes a reset module, which is electrically connected to the control module and is used to reset the mobile charging device.

11. The mobile charging device according to any one of claims 1 to 4, characterized in that: The charging unit is a USB interface.

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