Charging module with output protection mechanism and charging system
By introducing energy storage, anti-reverse and electromagnetic compatibility modules into the charging module, and using the copper fusing area of the fuse module or the fuse device to achieve overcurrent protection, the safety and cost issues of the high-power charging module in the event of a fault are solved, achieving a double reduction in safety and cost.
Patent Information
- Application Number
- CN202511066129.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-31
- Publication Date
- 2025-09-12
AI Technical Summary
Existing high-power charging modules are prone to fire, explosion and other safety accidents in the event of a failure, and related technical solutions increase life cycle costs.
An energy storage module, an anti-reverse module, an electromagnetic compatibility module and at least one fuse module are introduced into the power circuit of the charging module. Overcurrent protection is achieved through the copper fuse area or fuse device of the fuse module, and the overcurrent protection can be repaired after the initial fuse.
The production cost and life cycle cost of the charging module are reduced, while charging safety is improved and the occurrence of safety accidents is prevented.
Smart Images
Figure CN120638240A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of power electronics technology, and in particular to a charging module and a charging system with an output protection mechanism. Background Art
[0002] In power electronics, especially in the power circuit design of high-power charging modules, damage to an electronic component or an external short circuit can easily lead to safety hazards such as fires and explosions. Therefore, protective devices such as fuses and fuses are often added to the power circuit of high-power charging modules to prevent accidents by disconnecting the circuit when the current flowing through the power circuit exceeds the fuse's melting point. However, the use of protective devices increases the production cost of the power circuit.
[0003] Related technologies use localized fusing of printed circuit boards (PCBs) to achieve low-cost power circuit disconnection protection. However, while this solution can reduce the probability of safety incidents, it renders the power circuit irreparable after disconnection, increasing the lifecycle cost of the power circuit. Consequently, related technologies suffer from high lifecycle costs for power circuits. Summary of the Invention
[0004] The purpose of this application is to provide a charging module and a charging system with an output protection mechanism, which can reduce the production cost and life cycle cost of the charging module.
[0005] The embodiment of the present application is implemented as follows: According to a first aspect of an embodiment of the present application, a charging module with an output protection mechanism is provided, wherein a power circuit in the charging module includes: an energy storage module, an anti-reverse module, an electromagnetic compatibility module, and at least one fuse module; The first end of the energy storage module is connected to the first DC input and connected to the first input end of the anti-reverse module. The third end of the energy storage module is connected to the second DC input and connected to the second input end of the anti-reverse module. The output end of the anti-reverse module is connected to the first input end of the electromagnetic compatibility module. The second end and the fourth end of the energy storage module are both connected to the second input end of the electromagnetic compatibility module. The output end of the electromagnetic compatibility module is connected to an external load. At least one fuse module is provided on a connection line between the third end of the energy storage module and the second input end of the anti-reverse module, or is provided on a connection line between the fourth end of the energy storage module and the second input end of the electromagnetic compatibility module, or is provided in the energy storage module; When the anti-reverse module fails, the fuse module blows, so that the power circuit is cut off.
[0006] As a possible implementation, the energy storage module includes: a first capacitor, a second capacitor, a first switch, and a second switch; the anti-reverse module includes: a first anti-reverse module group and a second anti-reverse module; One end of the first capacitor is connected to the input end of the first anti-reverse module, the other end of the first capacitor is respectively connected to the output end of the first switch and the output end of the second switch, the input end of the first switch is respectively connected to the input end of the second anti-reverse module and one end of the second capacitor, the input end of the second switch and the other end of the second capacitor are both connected to the second input end of the electromagnetic compatibility module, and the output end of the first anti-reverse module and the output end of the second anti-reverse module are both connected to the first input end of the electromagnetic compatibility module; The fuse module is arranged on the connecting line between the input end of the second anti-reverse module and the input end of the first switch, or the fuse module is arranged on the connecting line between the other end of the second capacitor and the second input end of the electromagnetic compatibility module, or the fuse module is arranged on the connecting line of the other end of the second capacitor, or the fuse module is arranged on the connecting line between the input end of the second switch and the second input end of the electromagnetic compatibility module.
[0007] As a possible implementation, the above-mentioned fuse module includes: at least one of a copper fuse area and a fuse device; A copper fusing area is provided on the connection line provided with the fusing module; Alternatively, connection points are reserved at both ends of the fuse module, and both ends of the fuse device are connected to a connection point respectively; Alternatively, a connection point is reserved at least at one end of the copper foil fusing area. When the copper foil fusing area is blown, a fuse is connected to reconnect the copper foil fusing area.
[0008] As a possible implementation method, the copper width of the above-mentioned copper foil melting area is smaller than the copper foil width of the adjacent areas at both ends of the fuse module. When the real-time current flowing through the connecting line where the copper foil melting area is located is greater than the preset current threshold, the copper foil melting area melts.
[0009] As a possible implementation, the above-mentioned fuse device includes: a fuse; A first connection point is reserved at one end of the fuse module, and a second connection point is reserved at the other end of the fuse module. The first connection point and the second connection point are used to provide welding points for the fuse.
[0010] As a possible implementation, the fuse module is provided on a connection line between the input end of the second anti-reverse module and the input end of the first switch. The fuse module includes a plurality of fuse sub-units, each fuse sub-unit including at least one of a copper foil fuse area and a fuse device. The second anti-reverse module includes a plurality of anti-reverse diodes connected in parallel. A fuse sub-unit is respectively provided on the connection line of the welding point close to the input end of each anti-reverse diode.
[0011] As a possible implementation method, the above-mentioned insurance device further includes: spare copper foil; A spare copper sheet is provided in the parallel section of the copper sheet fusing area, and one end of the copper sheet fusing area and one end of the spare copper sheet are provided together on a connecting line; A third connection point is reserved at the other end of the copper foil fusing area, and a fourth connection point is reserved at the other end of the spare copper foil. When the copper foil fusing area is blown, the spare copper foil is reconnected to the copper foil fusing area via the third connection point and the fourth connection point.
[0012] As a possible implementation method, the above-mentioned at least one fuse module includes: a first fuse module and a second fuse module, the first fuse module is arranged on the connecting line between the input end of the second anti-reverse module and the input end of the first switch, and at the same time, the second fuse module is arranged on the connecting line between the input end of the second switch and the second input end of the electromagnetic compatibility module.
[0013] As a possible implementation, the energy storage module, anti-reverse module, and electromagnetic compatibility module are arranged on a first printed circuit board, and the fuse module is arranged on a second printed circuit board.
[0014] According to a second aspect of an embodiment of the present application, a charging system is provided. The charging system includes at least one charging module with an output protection mechanism as described in the first aspect.
[0015] The beneficial effects of the embodiments of the present application include: The present application provides a charging module with an output protection mechanism. By adding a fuse module to the output side of the power circuit in the charging module, the charging module is equipped with an output protection mechanism, thereby improving the charging safety of the charging module. The output side of the power circuit includes an energy storage module, an anti-reverse module, an electromagnetic compatibility module, and at least one fuse module. The first end and the third end of the energy storage module are both used to access the charging voltage. The first end of the energy storage module is connected to the first input end of the anti-reverse module. The second end and the fourth end of the energy storage module are both connected to the second input end of the electromagnetic compatibility module. The third end of the energy storage module is connected to the first input end of the electromagnetic compatibility module. The output end of the anti-reverse module is connected to the first input end of the electromagnetic compatibility module. The output end of the electromagnetic compatibility module is connected to an external load. Among them, the fuse module can be set on the connection line between the third end of the energy storage module and the second input end of the anti-reverse module, the fuse module can also be set in the energy storage module, and the fuse module can also be set on the connection line between the fourth end of the energy storage module and the second input end of the electromagnetic compatibility module. In this way, when a short circuit fault occurs in the anti-reverse module, the key path of the power circuit can be quickly cut off, thereby preventing the electrolytic capacitor in the energy storage module from being reversely broken down and causing a safety accident. In addition, the fuse module preferentially calls the copper foil fuse area to fuse in order to actively cut off the power circuit. The copper foil fuse area is a process design on the copper foil trace on the printed circuit board, which has a lower cost. After the fuse module initially blows the protection, it can also call the spare fuse device to provide overcurrent protection again, so that the power circuit can be repaired and reused. In this way, the production cost and life cycle cost of the charging module can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.
[0017] Figure 1 A schematic diagram of the structure of a power circuit in a charging module with an output protection mechanism provided in an embodiment of the present application; Figure 2 A schematic structural diagram of a first charging module with an output protection mechanism provided in an embodiment of the present application; Figure 3 A schematic structural diagram of a second charging module with an output protection mechanism provided in an embodiment of the present application; Figure 4 A schematic structural diagram of the first fuse module provided in an embodiment of the present application; Figure 5A schematic structural diagram of a second fuse module provided in an embodiment of the present application; Figure 6 A schematic structural diagram of a third fuse module provided in an embodiment of the present application; Figure 7 A schematic structural diagram of a fourth fuse module provided in an embodiment of the present application; Figure 8 A schematic structural diagram of the fifth fuse module provided in an embodiment of the present application; Figure 9 A schematic structural diagram of a sixth fuse module provided in an embodiment of the present application; Figure 10 A schematic structural diagram of a seventh fuse module provided in an embodiment of the present application; Figure 11 A schematic structural diagram of an eighth fuse module provided in an embodiment of the present application; Figure 12 A schematic diagram of the structure of a charging system provided in an embodiment of the present application.
[0018] Description of the drawings: 10: Charging module; 20: Charging system; 101: Energy storage module; 1011: First capacitor; 1012: Second capacitor; 1013: First switch; 1014: Second switch; 102: Anti-reverse module; 1021: First anti-reverse module group; 1022: Second anti-reverse module; 221: Anti-reverse diode; 103: Electromagnetic compatibility module; 104: Fuse module; 1041: Copper foil fusing area; 1042: Fuse; 421: First connection point; 422: Second connection point; 1043: Spare copper foil; 431: Third connection point; 432: Fourth connection point; 433: Short-circuit block. DETAILED DESCRIPTION
[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.
[0020] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in the present application without creative work are within the scope of protection of the present application.
[0021] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.
[0022] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the inventive product is typically placed when in use. These terms are intended only to facilitate the description of this application and simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting this application. Furthermore, the terms "first," "second," "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0023] Furthermore, terms such as "horizontal" and "vertical" do not necessarily mean that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.
[0024] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.
[0025] Currently, high-power charging modules often incorporate protective devices such as fuses or fuses. When the current flowing through the power circuit in a high-power charging module exceeds the maximum current the fuse can withstand, the fuse blows, cutting off the power circuit and preventing safety incidents such as fire and explosion. However, the fuse in this solution increases the production cost of the charging module, and the specifications of the fuse also limit the practical application of high-power charging modules. In addition, some charging modules also employ a design in which the printed circuit board is partially blown. When the local blown area is properly designed, the probability of safety incidents can be greatly reduced. However, once a short circuit occurs in this solution, the power circuit will be completely destroyed, requiring the power circuit to be re-manufactured and put back into the charging module application, which increases the lifecycle cost of the charging module.
[0026] To this end, an embodiment of the present application provides a charging module with an output protection mechanism, wherein the output side of the power circuit in the charging module includes: an energy storage module, an anti-reverse module, an electromagnetic compatibility module, and at least one fuse module, wherein the fuse module can be set on the connection line between the energy storage module and the second input terminal of the anti-reverse module, the fuse module can also be set inside the energy storage module, and the fuse module can also be set on the connection line between the energy storage module and the second input terminal of the electromagnetic compatibility module. The fuse module is composed of a copper foil fuse area and a backup unit. When a short circuit fault occurs in the anti-reverse module, the copper foil fuse area is disconnected first, and then the power circuit is maintained. After the power circuit is normal, the backup unit is started so that the power circuit can be called repeatedly. In this way, the production cost and life cycle cost of the charging module can be reduced.
[0027] The charging module and the charging system with an output protection mechanism provided in the embodiments of the present application are explained in detail below with reference to the accompanying drawings.
[0028] Figure 1 This is a schematic diagram of the structure of a power circuit in a charging module with an output protection mechanism provided by this application, see Figure 1 The power circuit in a charging module with an output protection mechanism provided in an embodiment of the present application is a dual-path anti-reverse series-parallel topology circuit diagram. The power circuit is composed of an input stage, an intermediate stage, and an output stage. The input stage is used to access the power supply voltage provided by an external power supply. The intermediate stage converts the charging voltage based on the resonant cavity to obtain the charging voltage, and outputs the charging voltage to the load via the output stage to complete the charging of the load. It is worth noting that the load is the on-board battery of an electric vehicle or the on-board battery of an electric vehicle, and the charging module is deployed in the charging pile.
[0029] Optionally, the present application adds a fuse module to the output stage of the power circuit in the charging module so that the charging module also has an output protection mechanism, thereby improving the charging safety of the charging module and protecting the charging system and vehicle safety.
[0030] Figure 2 This is a schematic diagram of a charging module with an output protection mechanism provided by this application, see Figure 2 An embodiment of the present application provides a charging module with an output protection mechanism. The power circuit in the charging module 10 includes: an energy storage module 101, an anti-reverse module 102, an electromagnetic compatibility module 103 and at least one fuse module 104.
[0031] The first end of the energy storage module 101 is connected to the first DC input and is connected to the first input end of the anti-reverse module 102. The third end of the energy storage module 101 is connected to the second DC input and is connected to the second input end of the anti-reverse module 102. The output end of the anti-reverse module 102 is connected to the first input end of the electromagnetic compatibility module 103. The second end and the fourth end of the energy storage module 101 are both connected to the second input end of the electromagnetic compatibility module 103. The output end of the electromagnetic compatibility module 103 is connected to an external load.
[0032] Optionally, the energy storage module 101 receives the charging voltage output by the intermediate stage of the power circuit via the first terminal and the third terminal, and significantly reduces the low-frequency ripple in the charging voltage by storing charge, thereby making the charging voltage output by the power circuit more stable. When the load current of the anti-reverse module 102 suddenly increases, the energy storage module 101 can quickly release the stored energy to prevent the charging voltage from dropping rapidly.
[0033] Optionally, the electromagnetic compatibility module 103 can prevent the power circuit from affecting the external load when operating normally in an electromagnetic environment. Its core function is to ensure that the charging module 10 can resist external electromagnetic interference while not causing excessive electromagnetic pollution to the surrounding environment.
[0034] Optionally, the anti-reverse module 102 is implemented by a plurality of anti-reverse diodes. The anti-reverse diodes in the anti-reverse module 102 can effectively prevent the vehicle battery from flowing back through their unidirectional conductivity, thereby preventing damage to the charging module. It is worth noting that internal damage to the charging module will not affect the vehicle battery and the normal charging process of the vehicle battery.
[0035] Optionally, when the anti-reverse diode in the anti-reverse module 102 is damaged, the charging voltage will be fed back to the capacitor in the energy storage module 101, thereby causing the energy storage module 101 to be subjected to a higher charging voltage, causing the capacitor in the energy storage module 101 to be reversely broken down. The capacitor generates an impact current that causes damage to the battery fuse. If the fault continues to occur, it may cause a fire.
[0036] At least one fuse module 104 is arranged on the connecting line between the third end of the energy storage module 101 and the second input end of the anti-reverse module 102, or, is arranged on the connecting line between the fourth end of the energy storage module 101 and the second input end of the electromagnetic compatibility module 103, or, is arranged in the energy storage module 101.
[0037] Optionally, fuse module 104 is primarily used to provide overcurrent protection for the power circuit. When an overcurrent condition occurs in the power circuit, fuse module 104 actively cuts off the abnormal current path, thereby preventing damage to the charging module and potentially causing safety incidents such as fires and explosions. Fuse module 104 can be implemented by locally fusing the printed circuit board and a fuse device, or by only locally fusing the printed circuit board, or by a fuse device alone. This application does not impose specific limitations on this.
[0038] Optionally, the fuse module 104 can be set on the connecting line F1 between the third end of the energy storage module 101 and the second input end of the anti-reverse module 102, or on the connecting line F3 between the fourth end of the energy storage module 101 and the second input end of the electromagnetic compatibility module 103, or at F2 and F4 in the energy storage module 101.
[0039] It is worth noting that the connection lines F1, F2, F3 and F4 are all considered to be key positions of the power circuit. The fuse module 104 can be set at any position among F1, F2, F3 and F4. The fuse module 104 can also be set at multiple points. This application does not make specific restrictions on this.
[0040] Optionally, the connecting wires between the modules in the power circuit are copper traces on the printed circuit board, the power circuit in the charging module 10 is integrated on the printed circuit board, the electronic components in the power circuit are connected via the copper traces on the printed circuit board, and the electronic components are soldered to the printed circuit board via solder.
[0041] When the anti-reverse module 102 fails, the fuse module 104 is blown, so that the power circuit is cut off.
[0042] Optionally, when an overcurrent fault occurs in the anti-reverse module 102 , the current values at the key positions F1 , F2 , F3 and F4 increase, causing the temperature of the key positions F1 , F2 , F3 and F4 to increase, which may cause safety accidents such as fire.
[0043] Optionally, when an overcurrent fault occurs in the anti-reverse module 102, the temperature of a key position in the power circuit rises until the temperature reaches the melting point of the copper foil fusing area, the fuse module 104 blows, the power circuit is cut off, and the fuse module 104 actively prevents safety accidents from occurring.
[0044] In an embodiment of the present application, a fuse module is added to the output side of the power circuit in the charging module to provide the charging module with an output protection mechanism, thereby improving the charging safety of the charging module. The output side of the power circuit includes: an energy storage module, an anti-reverse module, an electromagnetic compatibility module, and at least one fuse module. The first end and the third end of the energy storage module are both used to access the charging voltage. The first end of the energy storage module is connected to the first input end of the anti-reverse module. The second end and the fourth end of the energy storage module are both connected to the second input end of the electromagnetic compatibility module. The third end of the energy storage module is connected to the first input end of the electromagnetic compatibility module. The output end of the anti-reverse module is connected to the first input end of the electromagnetic compatibility module. The output end of the electromagnetic compatibility module is connected to an external load. Furthermore, the fuse module can be set on the connection line between the third end of the energy storage module and the second input end of the anti-reverse module, the fuse module can also be set in the energy storage module, and the fuse module can also be set on the connection line between the fourth end of the energy storage module and the second input end of the electromagnetic compatibility module. In this way, when a short circuit fault occurs in the anti-reverse module, the key path of the power circuit can be quickly cut off, thereby preventing the electrolytic capacitor in the energy storage module from being reversely broken down and causing a safety accident. In addition, the fuse module preferentially calls the copper foil fuse area to fuse in order to actively cut off the power circuit. The copper foil fuse area is a process design on the copper foil trace on the printed circuit board, which has a lower cost. After the fuse module initially blows the protection, the spare fuse component can also be called to provide overcurrent protection again, so that the power circuit can be repaired and reused. In this way, the production cost and life cycle cost of the charging module can be reduced.
[0045] In an optional embodiment, see Figure 3 In an embodiment of the present application, an energy storage module 101 in a power circuit of a charging module 10 with an output protection mechanism includes: a first capacitor 1011, a second capacitor 1012, a first switch 1013, and a second switch 1014; and an anti-reverse module 102 includes: a first anti-reverse module group 1021 and a second anti-reverse module group 1022.
[0046] One end of the first capacitor 1011 is connected to the input end of the first anti-reverse module 1021, the other end of the first capacitor 1011 is respectively connected to the output end of the first switch 1013 and the output end of the second switch 1014, the input end of the first switch 1013 is respectively connected to the input end of the second anti-reverse module 1022 and one end of the second capacitor 1012, the input end of the second switch 1014 and the other end of the second capacitor 1012 are both connected to the second input end of the electromagnetic compatibility module 103, and the output end of the first anti-reverse module 1021 and the output end of the second anti-reverse module 1022 are both connected to the first input end of the electromagnetic compatibility module 103.
[0047] Alternatively, when the oscillation in the second anti-reverse module 1022 causes a transient avalanche voltage breakdown, the overvoltage in the second anti-reverse module 1022 fails, and the second anti-reverse module 1022 exhibits a short-circuit overcurrent fault, the battery voltage at the output port of the power circuit is fed back to the second capacitor 1012, causing the second capacitor 1012 to be subjected to a higher charging voltage, causing short-circuit damage to the second capacitor 1012, and thus short-circuiting the rechargeable battery. If the short-circuit fault point in the power circuit continues to short-circuit and is not disconnected, the power circuit may cause a safety accident.
[0048] Optionally, when the second anti-reverse module 1022 is damaged by an overcurrent fault, circuit protection can be performed by a fuse module 104 added to the output side of the power circuit.
[0049] The fuse module 104 is arranged on the connection line between the input end of the second anti-reverse module 1022 and the input end of the first switch 1013, or, the fuse module 104 is arranged on the connection line between the other end of the second capacitor 1012 and the second input end of the electromagnetic compatibility module 103, or, the fuse module 104 is arranged on the connection line between the other end of the second capacitor 1012, or, the fuse module 104 is arranged on the connection line between the input end of the second switch 1014 and the second input end of the electromagnetic compatibility module 103.
[0050] Optionally, the connection line between the input end of the second anti-reverse module 1022 and the input end of the first switch 1013 is a key position F1, the connection line between the other end of the second capacitor 1012 and the second input end of the electromagnetic compatibility module 103 is a key position F2, the connection line between the other end of the second capacitor 1012 is a key position F4, and the connection line between the input end of the second switch 1014 and the second input end of the electromagnetic compatibility module 103 is a key position F3. The fuse module 104 can be set at any key position. Among them, the key position F4 can only protect the second capacitor 1012 from being easily identified. The steady-state currents of the key positions F2 and F3 are large, while the steady-state current of the key position F1 is moderate. The copper foil fusing area set at the key position F1 has a lower requirement for the fusing current. Therefore, it is preferred that the fuse module 104 is set at the connection line between the input end of the second anti-reverse module 1022 and the input end of the first switch 1013 as the key position F1.
[0051] In an optional embodiment, the fuse module 104 in the charging module 10 with an output protection mechanism provided in the embodiment of the present application includes at least one of a copper fuse area 1041 and a fuse device. The specific implementation process is as follows: A copper fusing area 1041 is provided on the connecting line of the fusing module 104 .
[0052] Optionally, when fuse module 104 is implemented solely by copper fusing region 1041, copper fusing region 1041 may be located at any one or more of the key positions F1, F2, F3, and F4 of the power circuit, and this application does not impose specific limitations thereon. Copper fusing region 1041 specifically refers to a fusible region formed by replacing the copper material, reducing the thickness, or shrinking the width of the connecting wire provided by fuse module 104. When an overcurrent condition occurs in the connecting wire where fuse module 104 is located, copper fusing region 1041 preferentially fuses to protect subsequent circuits.
[0053] Furthermore, the copper foil fusing area 1041 refers to the copper foil routing at a key position, which is processed by cutting grooves or other means, so that a weak area of the copper foil routing is formed in a thin neck shape or a dumbbell shape. The copper foil fusing area 1041 is narrower than the copper foil routing that has not been grooved, and the heat dissipation performance of the copper foil fusing area 1041 is worse. The copper foil fusing area 1041 is more likely to accumulate heat, that is, the copper foil fusing area 1041 is more likely to cause fuse protection.
[0054] It is worth noting that the copper foil fusing area 1041 is made in the early stage of manufacturing the printed circuit board where the power circuit is located and cannot be changed later. Since the steady-state current at each key position is different, the width and size of the copper foil fusing area set at each key position are also different.
[0055] Alternatively, connection points are reserved at both ends of the fuse module 104, and both ends of the fuse device are connected to one connection point respectively.
[0056] Optionally, when the fuse module 104 is implemented only by a fuse device, connection points need to be reserved at both ends of the fuse module 104 in advance so that the fuse device can be replaced at any time after being damaged, so that after the power circuit fuse protection is repaired, a new fuse device can be installed to re-connect the power circuit.
[0057] Alternatively, a connection point is reserved at least at one end of the copper foil fusing area 1041 , and when the copper foil fusing area 1041 is blown, the fuse device is connected to reconnect the copper foil fusing area 1041 .
[0058] Optionally, when the fuse module 104 is implemented by both the copper foil fusing area 1041 and a fuse device, an overcurrent occurs in the connection line provided by the fuse module 104, and the copper foil fusing area 1041 preferentially accumulates heat, causing the copper foil fusing area 1041 to fuse. After the power circuit is repaired, the fuse device is then connected. The fuse device can be implemented by either a fuse or a spare copper foil. When the fuse device is a fuse, connection points need to be reserved at both ends of the copper foil fusing area 1041 in advance to facilitate subsequent connection of the fuse. When the fuse device is a spare copper foil, the other end of the spare copper foil is fixed to the original copper busbar of the connection line, and only one connection point needs to be reserved at the end of the copper foil fusing area 1041 near the power device to facilitate subsequent reconnection of the power circuit using the spare copper foil.
[0059] It is worth noting that when an overcurrent fault occurs in the anti-reverse module 102, the fuse module 104 preferentially uses the copper fuse area for fuse protection, and then uses the fuse device to provide subsequent protection for the repaired power circuit. In addition, if the copper fuse area 1041 does not fuse, the fuse device is not used.
[0060] In an optional embodiment, the copper width of the copper foil fusing area 1041 in the fusing module 104 in the charging module 10 with an output protection mechanism provided in an embodiment of the present application is smaller than the copper foil width of the adjacent areas at both ends of the fusing module 104. When the real-time current flowing through the connecting line where the copper foil fusing area 1041 is located is greater than a preset current threshold, the copper foil fusing area 1041 is blown.
[0061] Optionally, the copper foil width refers to the copper clad width of the traces between power devices on the printed circuit board. The local copper clad width of the connecting line set by the shrinking fuse module 104 is used to form a locally narrowed thin neck-shaped, dumbbell-shaped, or bottleneck-shaped fusible area on the connecting line, that is, the copper clad width of the copper foil fuse area 1041 is smaller than the copper clad width of the normal connecting lines at both ends.
[0062] Optionally, when the real-time current flowing through the connecting wire where copper fuse region 1041 is located exceeds a preset current threshold, a large amount of heat accumulates in copper fuse region 1041, causing it to fuse automatically, thereby disconnecting the power circuit. The preset current threshold is an overcurrent limit set by the user. When the real-time current flowing through the connecting wire where copper fuse region 1041 is located exceeds this overcurrent limit, it is considered that an overcurrent has occurred in the power device connected to the connecting wire, requiring fuse module 104 to disconnect the power circuit to protect other electronic devices.
[0063] In an optional implementation, the fuse device in the fuse module 104 in the charging module 10 with an output protection mechanism provided in an embodiment of the present application is a fuse 1042 .
[0064] A first connection point 421 is reserved at one end of the fuse module 104 , and a second connection point 422 is reserved at the other end of the fuse module 104 . The first connection point 421 and the second connection point 422 are used to provide welding points for the fuse 1042 .
[0065] Optionally, whether the fuse module 104 is implemented only by the fuse 1042 or the fuse module 104 is implemented by the copper fuse area 1041 and the fuse 1042, it is necessary to pre-set a first connection point 421 and a second connection point 422 at both ends of the fuse module 104 to provide a welding point for the fuse 1042.
[0066] Among them, when the fuse module 104 is only implemented by the fuse 1042, the fuse 1042 provides fuse protection for the charging module 10 alone. The fuse 1042 is connected to the key position in the power circuit through the first connection point 421 and the second connection point 422 at the same time as the charging module 10 is produced.
[0067] Furthermore, when the fuse module 104 is jointly implemented by the copper fuse area 1041 and the fuse 1042, the copper fuse area 1041 provides the first fuse protection for the charging module 10, and the fuse 1042 serves as the secondary fuse protection for the charging module 10. Only after the copper fuse area 1041 is blown, the fuse 1042 is connected to the power circuit via the first connection point 421 and the second connection point 422 to continue to provide protection for the charging module 10.
[0068] In an optional embodiment, see Figure 4 In an embodiment of the present application, the fuse module 104 in a charging module 10 with an output protection mechanism is implemented by a copper fuse area 1041 and a fuse 1042. The two ends of the copper fuse area 1041 pre-set between the input end of the second anti-reverse module 1022 and the input end of the first switch 1013 are reserved connection points for the fuse 1042.
[0069] Specifically, a copper foil fusing area 1041 is set on the connecting line between the input end of the second anti-reverse module 1022 and the input end of the first switch 1013. A first connection point 421 is reserved at one end of the copper foil fusing area 1041, and a second connection point 422 is reserved at the other end of the copper foil fusing area 1041. The first connection point 421 and the second connection point 422 are used to provide welding points for the fuse 1042.
[0070] Furthermore, the copper wiring between the input end of the second anti-reverse module 1022 and the input end of the first switch 1013 is grooved so that the middle part of the copper wiring shrinks to form a copper fuse area 1041. When an overcurrent fault occurs in the second anti-reverse module 1022, the copper fuse area 1041 is easily melted to achieve fuse protection.
[0071] Optionally, a first connection point 421 and a second connection point 422 are reserved in advance on the wide copper traces that have not been grooved at both ends of the copper fuse area 1041. When an overcurrent fault occurs in the second anti-reverse module 1022 for the first time and the copper fuse area 1041 is blown, the fuse 1042 is welded to the first connection point 421 and the second connection point 422 after waiting for the power circuit to be repaired, and the fuse 1042 is used to provide overcurrent protection for the repaired power circuit.
[0072] In an optional embodiment, see Figure 5 In an embodiment of the present application, a fuse module 104 in a power circuit of a charging module 10 with an output protection mechanism is implemented by a copper fuse area 1041 and a fuse 1042. A connection point for the fuse 1042 is reserved near the input end pad of the anti-reverse diode 221 in the second anti-reverse module 1022.
[0073] Among them, a copper foil fusing area 1041 is respectively set on the connecting line of the welding point near the input end of the second anti-reverse module 1022, and a first connection point 421 is reserved on the connecting line where the welding point of the input end of the second anti-reverse module 1022 is located. A second connection point 422 is reserved at the end of the copper foil fusing area 1041 away from the input end of the second anti-reverse module 1022. The first connection point 421 and the second connection point 422 are used to provide welding points for the fuse 1042.
[0074] Specifically, the copper trace soldered to the input pad of the second anti-reverse module 1022, which is prone to short-circuit faults, is grooved to form a copper fusing area 1041 near the input pad of the second anti-reverse module 1022. A first connection point 421 is reserved near the input pad of the second anti-reverse module 1022, and a second connection point 422 is reserved on a wide copper trace away from the input of the second anti-reverse module 1022, away from the copper fusing area 1041. This allows for faster disconnection of the fault point and better protection of the power circuit.
[0075] It is worth noting that there is a certain distance between the first connection point 421 and the input pad of the second anti-reflection module 1022 , which can effectively prevent crosstalk between devices.
[0076] In summary, see Figure 4 and Figure 5In an embodiment of the present application, the second anti-reverse module 1022 in the anti-reverse module 102 in the power circuit of a charging module 10 with an output protection mechanism is composed of only one anti-reverse diode.
[0077] In an optional embodiment, the second anti-reverse module 1022 in the charging module 10 with an output protection mechanism provided in an embodiment of the present application includes: multiple anti-reverse diodes 221, and the fuse module 104 includes multiple fuse sub-units, each fuse sub-unit includes at least: a copper foil fuse area 1041 and one of the fuse devices. At this time, the fuse module 104 is arranged on the connecting line between the input end of the second anti-reverse module 1022 and the input end of the first switch 1013, the fuse module 104: includes multiple fuse sub-units, each fuse sub-unit includes at least: a copper foil fuse area 1041 and one of the fuse devices, and the second anti-reverse module 1022 includes: multiple parallel anti-reverse diodes 221.
[0078] A fuse sub-unit is respectively provided on the connection line of the welding point close to the input end of each anti-reverse diode 221.
[0079] Optionally, when the second anti-reverse module 1022 is realized by connecting multiple anti-reverse diodes 221 in parallel, a separate fuse sub-unit can be added at the position where the input end pad of each anti-reverse diode 221 is welded, and each anti-reverse diode 221 can be protected from overcurrent by each fuse sub-unit separately, and each anti-reverse diode 221 does not interfere with each other.
[0080] In an optional embodiment, see Figure 6 In an embodiment of the present application, a second anti-reverse module 1022 in a charging module 10 with an output protection mechanism includes: a plurality of anti-reverse diodes 221, and when the fuse module 104 is implemented by a copper fuse area 1041 and a fuse 1042, a connection point is reserved for the fuse 1042 in advance in the area where the input end pad of each anti-reverse diode 221 is located.
[0081] Specifically, a copper foil fusing area 1041 is respectively arranged on the connecting line of the welding point near the input end of each anti-reverse diode 221, and a first connection point 421 is reserved on the connecting line where the welding point of the input end of each anti-reverse diode 221 is located. A second connection point 422 is reserved at one end of each copper foil fusing area 1041 away from the input end of each anti-reverse diode 221. The first connection point 421 and the second connection point 422 are used to provide welding points for the fuse 1042.
[0082] In an optional embodiment, see Figure 7In a charging module 10 with an output protection mechanism provided in an embodiment of the present application, the second anti-reverse module 1022 in the power circuit includes multiple parallel anti-reverse diodes 221, and the fuse module 104 is composed of a copper fuse area 1041 and a fuse 1042. The fuse module 104 is set at the common output end of each anti-reverse diode 221, and the two ends of the copper fuse area 1041 set in the connecting line between the common output end of each anti-reverse diode 221 and the input end of the first switch 1013 are reserved as connection points for the fuse 1042.
[0083] The parallel output points of each anti-reverse diode 221 are connected to the output of the first anti-reverse module 1021 and the first input of the electromagnetic compatibility module 103, respectively. The parallel input points of each anti-reverse diode 221 are connected to the input of the first switch 1013 and one end of the second capacitor 1012. A copper fusing area 1041 is pre-defined by cutting a groove on the copper trace between the parallel input of each anti-reverse diode 221 and the input of the first switch 1013. A first connection point 421 and a second connection point 422 are reserved on the wide copper traces at both ends of the copper fusing area 1041.
[0084] Furthermore, when an overcurrent fault occurs in any anti-reverse diode 221 in the second anti-reverse module 1022 , the copper foil fusing area 1041 is fused, and after the power circuit is repaired, the fuse 1042 is welded to the first connection point 421 and the second connection point 422 .
[0085] It is worth noting that local melting of the copper foil of the printed circuit board can prevent safety accidents and protect key electronic components in the power circuit, but the fuse will increase the production cost of the power circuit; therefore, for power circuits with a low frequency of overcurrent failures, this application uses spare copper foil to replace spare fuses, thereby completing the overcurrent protection of the repaired power circuit.
[0086] In an optional implementation, the fuse device in the fuse module 104 in the charging module 10 with an output protection mechanism provided in the embodiment of the present application may also be a spare copper foil 1043 .
[0087] Optionally, the spare copper foil 1043 refers to a spare copper foil routing printed outside the necessary copper foil routing of the power circuit. The spare copper foil 1043 is only used after the copper foil fusing area 1041 is blown for protection and the power circuit is repaired.
[0088] Among them, a spare copper foil 1043 is set in the parallel section of the copper foil melting area 1041, and one end of the copper foil melting area 1041 and one end of the spare copper foil 1043 are jointly arranged on the connecting line; the other end of the copper foil melting area 1041 is reserved with a third connection point 431, and the other end of the spare copper foil 1043 is reserved with a fourth connection point 432. When the copper foil melting area 1041 is melted, the spare copper foil 1043 is reconnected to the copper foil melting area 1041 via the third connection point 431 and the fourth connection point 432.
[0089] Optionally, when an overcurrent fault occurs in the second anti-reverse module 1022, the copper foil fuse area 1041 is blown until the power circuit is repaired. Then, the short-circuit block 433 is welded to the third connection point 431 and the fourth connection point 432 to connect the wide copper foil trace to the input end of the second anti-reverse module 1022 through the spare copper foil 1043.
[0090] It is worth noting that the specifications and dimensions of the spare copper sheet 1043 are the same as those of the copper sheet in the copper sheet fusing area 1041 , so that the spare copper sheet 1043 can provide fusing protection for the repaired power circuit.
[0091] In an optional embodiment, see Figure 8 The fuse module 104 in the charging module 10 with an output protection mechanism provided in an embodiment of the present application is implemented by a copper fuse area 1041 and a spare copper 1043. The spare copper 1043 is connected to the power circuit of the charging module 10 via a short-circuit block 433. A connection point is reserved in advance on the wide copper trace near the input end of the second anti-reverse module 1022 in the copper fuse area.
[0092] Alternatively, the shorting block 433 may be made of a conductive material, such as a jumper or other electronic device, which is not specifically limited in this application. The shorting block 433 is primarily used to connect the spare copper foil 1043 to the wide copper busbar trace at the input end of the copper foil fusing area 1041 near the second anti-reflection module 1022.
[0093] Specifically, a copper foil fusing area 1041 is set on the connecting line between the input end of the second anti-reverse module 1022 and the input end of the first switch 1013, and a spare copper foil 1043 is set in the parallel section of the copper foil fusing area 1041. The end of the spare copper foil 1043 away from the input end of the second anti-reverse module 1022 is connected to the end of the copper foil fusing area 1041 away from the input end of the second anti-reverse module 1022; a third connection point 431 is reserved at the end of the copper foil fusing area 1041 close to the input end of the second anti-reverse module 1022, and a fourth connection point 432 is reserved at the end of the spare copper foil 1043 close to the input end of the second anti-reverse module 1022. The third connection point 431 and the fourth connection point 432 are used to provide welding points for the short-circuit block 433.
[0094] In an optional embodiment, see Figure 9 In a charging module 10 with an output protection mechanism provided by an embodiment of the present application, the fuse module 104 is implemented by a copper foil fuse area 1041 and a spare copper foil 1043. A connection point is pre-set for the spare copper foil 1043 in the area where the input end pad of the anti-reverse diode is located, so that the spare copper foil 1043 can be connected to the power circuit of the charging module 10 via the short-circuit block 433.
[0095] Among them, a copper foil fusing area 1041 is set on the connecting line of the welding point near the input end of the second anti-reflection module 1022, and a third connection point 431 is reserved on the wide copper row trace where the welding point of the input end of the second anti-reflection module 1022 is located. The wide copper foil trace at one end of the copper foil fusing area 1041 away from the input end of the second anti-reflection module 1022 is connected to the spare copper foil 1043. The spare copper foil 1043 is arranged longitudinally parallel to the copper foil fusing area 1041, and a fourth connection point 432 is set at the position of the spare copper foil 1043 near the welding point of the input end of the second anti-reflection module 1022.
[0096] Optionally, the copper trace soldered to the input pad of the second anti-reverse module 1022, which is susceptible to short circuit failures, is grooved to form a copper fusing region 1041 near the input pad of the second anti-reverse module 1022. A third connection point 431 is reserved near the input pad of the second anti-reverse module 1022. A spare copper foil 1043 is extended from the wide copper trace in the fusing region 1041, away from the input of the second anti-reverse module 1022. The spare copper foil 1043 has the same specifications and dimensions as the copper foil in the fusing region 1041 and is longitudinally parallel to the fusing region 1041. A fourth connection point 432 is reserved at the location of the spare copper foil 1043 near the input pad of the second anti-reverse module 1022. In this way, the fault point can be disconnected more quickly, better protecting the power circuit.
[0097] In summary, see Figure 8 and Figure 9 In the charging module 10 with an output protection mechanism provided in the embodiment of the present application, the second anti-reverse module 1022 only includes a single anti-reverse diode.
[0098] In an optional embodiment, see Figure 10 In an embodiment of the present application, a second anti-reverse module 1022 in a charging module 10 with an output protection mechanism includes: multiple anti-reverse diodes 221, and the fuse module 104 is implemented by a copper foil fusing area 1041 and a spare copper foil 1043. A connection point is pre-set for the spare copper foil 1043 near the area where the input end pad of each anti-reverse diode 221 is located. The spare copper foil 1043 is connected to the power circuit of the charging module 10 via a short-circuit block 433 to provide secondary fuse protection for the charging module 10.
[0099] Specifically, a copper foil fusing area 1041 is respectively arranged on the connecting line of the welding point near the input end of each anti-reverse diode 221, and a corresponding spare copper foil 1043 is arranged in the parallel section of each copper foil fusing area 1041. The end of each spare copper foil 1043 away from the input end of each anti-reverse diode 221 is connected to the end of each copper foil fusing area 1041 away from the input end of each anti-reverse diode 221; a third connection point 431 is reserved in the area where the soldering pad of the input end of each anti-reverse diode 221 is located, and a fourth connection point 432 is reserved at the end of each spare copper foil 1043 close to the input end of each anti-reverse diode 221. The third connection point 431 and the fourth connection point 432 are used to provide welding points for the short-circuit block 433.
[0100] In an optional embodiment, see Figure 11 In an embodiment of the present application, a second anti-reverse module 1022 in a charging module 10 with an output protection mechanism includes multiple parallel anti-reverse diodes 221, and the fuse module 104 is implemented by a copper fuse area 1041 and a spare copper 1043. A connection point is reserved in advance on the wide copper trace at the common input end of each anti-reverse diode 221 so that the spare copper is connected to the power circuit of the charging module 10 via the short-circuit block 433, providing secondary fuse protection for the charging module 10.
[0101] Among them, a copper foil fusing area 1041 is pre-set on the copper foil trace between the parallel input end of each anti-reverse diode 221 and the input end of the first switch 1013 by using a groove processing method, and a spare copper foil 1043 is provided on the wide copper foil trace away from the input end pad of the copper foil fusing area 1041 and parallel to the copper foil fusing area 1041 in the longitudinal direction. A third connection point 431 is reserved on the wide copper foil trace close to the parallel input end of the copper foil fusing area 1041, and a fourth connection point 432 is reserved at one end of the spare copper foil 1043 close to the parallel input end of the anti-reverse diode 221.
[0102] It is worth noting that, see Figure 6 、 Figure 7 、 Figure 10 as well as Figure 11 In the embodiment of the present application, the second anti-reverse module 1022 in the charging module 10 includes three parallel anti-reverse diodes 221 as an example, but this does not mean that the second anti-reverse module 1022 is only compatible with three anti-reverse diodes 221. This application does not make specific limitations on this.
[0103] In an optional embodiment, a charging module 10 with an output protection mechanism provided in an embodiment of the present application includes: a first fuse module and a second fuse module, the first fuse module is arranged on the connecting line between the input end of the second anti-reverse module 1022 and the input end of the first switch 1013, and at the same time, the second fuse module is arranged on the connecting line between the input end of the second switch 1014 and the second input end of the electromagnetic compatibility module 103.
[0104] It is worth noting that when fuse modules 104 are added at multiple locations, the structures of the fuse modules 104 added at each key location may be the same or different, and this application does not make any specific limitation on this.
[0105] In an optional embodiment, the energy storage module 101 , the anti-reverse module 102 and the electromagnetic compatibility module 103 are arranged on a first printed circuit board, and the fuse module 104 is arranged on a second printed circuit board.
[0106] Optionally, when the fuse module 104 is independent of the printed circuit board (PCB) housing the power circuit, after the power module is fused and the power circuit is repaired, overcurrent protection of the repaired power circuit can be restored by directly replacing the PCB housing the fuse module 104. The first PCB and the second PCB are connected via a jumper or power cord to facilitate replacement of the fuse module 104.
[0107] In an optional embodiment, see Figure 12The charging system 20 provided in the embodiment of the present application includes: at least one charging module 10 with an output protection mechanism. When an overcurrent fault occurs in the anti-reverse diode 221 of a charging module 10 in the charging system 20, the controller in the charging pile controls the subsequent charging modules of the faulty charging module 10 to be locked until the power circuit in the faulty charging module 10 is repaired.
[0108] The above are only specific embodiments of the present application, but the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.
[0109] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.
Claims
1. A charging module with an output protection mechanism, characterized in that: The power circuit in the charging module includes: an energy storage module, an anti-reverse module, an electromagnetic compatibility module and at least one fuse module; The first end of the energy storage module is connected to the first DC input and connected to the first input end of the anti-reverse module. The third end of the energy storage module is connected to the second DC input and connected to the second input end of the anti-reverse module. The output end of the anti-reverse module is connected to the first input end of the electromagnetic compatibility module. The second end and the fourth end of the energy storage module are both connected to the second input end of the electromagnetic compatibility module. The output end of the electromagnetic compatibility module is connected to an external load. At least one of the fuse modules is arranged on a connection line between the third end of the energy storage module and the second input end of the anti-reverse module, or is arranged on a connection line between the fourth end of the energy storage module and the second input end of the electromagnetic compatibility module, or is arranged in the energy storage module; When the anti-reverse module fails, the fuse module is fused to cut off the power circuit.
2. The charging module according to claim 1, characterized in that: The energy storage module includes: a first capacitor, a second capacitor, a first switch and a second switch; the anti-reverse module includes: a first anti-reverse module group and a second anti-reverse module; One end of the first capacitor is connected to the input end of the first anti-reverse module, the other end of the first capacitor is respectively connected to the output end of the first switch and the output end of the second switch, the input end of the first switch is respectively connected to the input end of the second anti-reverse module and one end of the second capacitor, the input end of the second switch and the other end of the second capacitor are both connected to the second input end of the electromagnetic compatibility module, and the output end of the first anti-reverse module and the output end of the second anti-reverse module are both connected to the first input end of the electromagnetic compatibility module; The fuse module is arranged on the connecting line between the input end of the second anti-reverse module and the input end of the first switch, or the fuse module is arranged on the connecting line between the other end of the second capacitor and the second input end of the electromagnetic compatibility module, or the fuse module is arranged on the connecting line of the other end of the second capacitor, or the fuse module is arranged on the connecting line between the input end of the second switch and the second input end of the electromagnetic compatibility module.
3. The charging module according to claim 2, characterized in that: The fusing module includes: at least one of a copper fusing area and a fuse device; A copper fusing area is provided on the connecting line provided with the fusing module; Alternatively, connection points are reserved at both ends of the fuse module, and both ends of the fuse device are connected to a connection point respectively; Alternatively, a connection point is reserved at least at one end of the copper foil fusing area, and when the copper foil fusing area is blown, the fuse device is connected to reconnect the copper foil fusing area.
4. The charging module according to claim 3, characterized in that: The copper width of the copper fusing area is smaller than the copper width of the adjacent areas at both ends of the fuse module. When the real-time current flowing through the connecting line where the copper fusing area is located is greater than the preset current threshold, the copper fusing area is blown.
5. The charging module according to claim 3, characterized in that: The fuse device includes: a fuse; A first connection point is reserved at one end of the fuse module, and a second connection point is reserved at the other end of the fuse module. The first connection point and the second connection point are used to provide welding points for the fuse.
6. The charging module according to claim 3, characterized in that: The fuse module is provided on a connection line between the input end of the second anti-reverse module and the input end of the first switch, the fuse module comprises a plurality of fuse sub-units, each of the fuse sub-units comprises at least one of a copper foil fusing area and a fuse device, and the second anti-reverse module comprises a plurality of anti-reverse diodes connected in parallel; A fuse sub-unit is respectively provided on the connecting line of the welding point close to the input end of each anti-reverse diode.
7. The charging module according to claim 3, characterized in that: The fuse device also includes: spare copper foil; A spare copper sheet is provided in a parallel section of the copper sheet fusing area, and one end of the copper sheet fusing area and one end of the spare copper sheet are both provided on a connecting line; A third connection point is reserved at the other end of the copper foil melting area, and a fourth connection point is reserved at the other end of the spare copper foil. When the copper foil melting area melts, the spare copper foil is reconnected to the copper foil melting area via the third connection point and the fourth connection point.
8. The charging module according to claim 2, characterized in that: The at least one fuse module includes: a first fuse module and a second fuse module, the first fuse module is arranged on the connecting line between the input end of the second anti-reverse module and the input end of the first switch, and the second fuse module is arranged on the connecting line between the input end of the second switch and the second input end of the electromagnetic compatibility module.
9. The charging module according to claim 1, characterized in that: The energy storage module, the anti-reverse module and the electromagnetic compatibility module are arranged on a first printed circuit board, and the fuse module is arranged on a second printed circuit board.
10. A charging system, characterized in that: The charging system comprises at least one charging module according to any one of claims 1 to 9.