CN113246764B

CN113246764B - Charging machine

Info

Publication number: CN113246764B
Application number: CN202110515817.2A
Authority: CN
Inventors: 畅朋政; 孟令杰
Original assignee: Meida Electric Chongqing Co ltd
Current assignee: Meida Electric Chongqing Co ltd
Priority date: 2021-05-12
Filing date: 2021-05-12
Publication date: 2023-03-24
Anticipated expiration: 2041-05-12
Also published as: CN113246764A

Abstract

A charger comprises a shell structure, a charging module and a charging gun, wherein the charging module comprises a system control module, a first heating power module, a second heating power module, an alternating current filtering module and a direct current filtering module, the system control module is connected with the first heating power module and the second heating power module in parallel, the alternating current filtering module is electrically connected with the second heating power module, the second heating power module is electrically connected with the first heating power module, the direct current filtering module is connected with the first heating power module, and the direct current filtering module is electrically connected with the charging gun. The charging module is designed into a plurality of modules, so that the modular design, assembly and maintenance of the charging module can be realized, the design, production and maintenance costs of the charging module are reduced, the charging module can be subjected to centralized heat dissipation, and electronic components are prevented from being burnt out due to the fact that heat cannot be dissipated timely.

Description

Charging machine

Technical Field

The invention relates to the technical field of electric vehicle charging, in particular to a charger.

Background

Along with the rapid development of the electric automobile industry, the number of charging products of electric automobiles is also gradually increased, wherein the charging system comprises a charging pile installed on a charging station and a charging machine installed on the electric automobiles, the charging pile is mainly used for being connected with a power grid and displaying the charging amount, the charging machine is used for controlling relevant parameters of electric automobile charging, such as voltage and the like and playing a role in overcurrent protection, and when the electric automobiles are charged, the charging machine is only electrically connected with the charging pile to charge the electric automobiles. However, current machine that charges is mainly for the vehicular, is about to charge on being fixed in electric automobile, and this kind of mode has a great deal of not enough: firstly, the vehicle-mounted charger increases the production cost and the weight of the electric automobile, is not beneficial to the popularization of the electric automobile and can increase the social cost; secondly, the vehicle-mounted charging machine increases the later maintenance cost, and has a complex structure and high maintenance cost; thirdly, the vehicle-mounted charger cannot timely distribute away the heat generated inside when charging, the heat dissipation efficiency is low, the heat dissipation effect is unsatisfactory, and internal electronic components are easily burnt.

Therefore, there is a need to provide a new technical solution to overcome the above-mentioned drawbacks.

Disclosure of Invention

The invention aims to provide a charger which can effectively solve the technical problems.

In order to achieve the purpose of the invention, the following technical scheme is adopted:

the utility model provides a machine charges, includes shell structure, set up in the interior module and the rifle that charges of charging of shell structure, its characterized in that: the charging module comprises a system control module, a first heating power module, a second heating power module arranged at the position of the first heating power module relatively, an alternating current filtering module and a direct current filtering module, wherein the alternating current filtering module and the direct current filtering module are used for being electrically connected with an alternating current power supply, the system control module is connected with the first heating power module and the second heating power module in parallel, the alternating current filtering module is electrically connected with the second heating power module, the second heating power module is electrically connected with the first heating power module, the direct current filtering module is connected with the first heating power module, and the direct current filtering module is electrically connected with the charging gun.

Preferably, the charging module further comprises a heat dissipation channel, and the heat dissipation channel is located between the first heating power module and the second heating power module.

Preferably, the charging module further comprises an air extractor, and the air extractor is located in the heat dissipation channel.

Preferably, the charging module further includes an upper case and a lower case, and the heat dissipation channel is located between the upper case and the lower case.

Preferably, the first heating power module is fixed in the upper case, and the second heating power module is fixed in the lower case.

Preferably, the system control module is fixed in the upper shell, and the ac filtering module and the dc filtering module are fixed in the lower shell.

Preferably, shell structure still includes the framework, be equipped with a plurality of exhaust vents in the framework, the machine that charges still including set up in heat dissipation channel air outlet with the water conservancy diversion subassembly between the exhaust vent is in order to with heat dissipation channel's hot air water conservancy diversion extremely the exhaust vent.

Preferably, the guide assembly comprises a first guide plate and a second guide plate, the head end of the first guide plate is opposite to the air outlet of the heat dissipation channel, the head end of the second guide plate is aligned to the tail end of the first guide plate, and the tail end of the second guide plate is opposite to the air outlet.

Preferably, the diversion subassembly still includes the baffle, the baffle is in the exhaust vent deviates from one side of first guide plate, the one end of baffle with the internal surface fixed connection of framework, the other end of baffle paste and lean on the side of charging the module.

Preferably, the shell structure further comprises a wall hanging plate arranged below the frame body, and the frame body is fixedly connected with the wall hanging plate.

Compared with the prior art, the invention has the following beneficial effects: the charger disclosed by the invention has the advantages that the charging module is designed into a plurality of modules, namely a system control module, a first heating power module, a second heating power module, an alternating current filter module, a direct current filter module and the like, so that the modular design, assembly and maintenance of the charging module can be realized, the design, production and maintenance cost of the charging module is reduced, and electronic components for charging, such as an inductor, a capacitor, a transformer, an overcurrent protection circuit, a switch module and the like, are equally divided into the first heating power module and the second heating power module, so that the separation of the plurality of electronic components can be realized, the electronic components can be stably operated and prevented from mutual interference, and meanwhile, because the generated heat is large, the electronic components can be intensively cooled, the cooling efficiency is high, and the electronic components are prevented from being burnt down due to the fact that the heat cannot be timely dissipated; meanwhile, a heat dissipation channel is arranged between the first heating power module with the largest heat productivity and the second heating power module, so that the generated heat can be rapidly concentrated into the heat dissipation channel, the heat dissipation is convenient and rapid to carry out, the heat can be timely dissipated, and air outside the shell structure can rapidly enter the heat dissipation channel through the air inlet hole due to the arrangement of the air exhauster, so that the heat in the heat dissipation channel can be rapidly taken away, and the rapid heat dissipation is realized; moreover, the first circuit board and the second circuit board which are detachably connected with the upper shell, the third circuit board and the fourth circuit board which are detachably connected with the lower shell are arranged, the system control module is arranged on the first circuit board, the first heating power module is arranged on the second circuit board, the second heating power module and the direct current filter module are arranged on the third circuit board and the alternating current filter module is arranged on the fourth circuit board, so that the disassembly of the modules can be conveniently realized, the maintenance is convenient, and the maintenance cost is reduced; meanwhile, the wall hanging plate is arranged below the frame body, so that the electric vehicle can be conveniently hung on a wall surface or other supporting frames, and is not required to be installed on an electric vehicle, thereby reducing the weight and cost of the electric vehicle on one hand, further reducing the social cost on the other hand, and being beneficial to popularization of the electric vehicle; and, through set up the water conservancy diversion subassembly in shell structure to can realize the timely giving off of heat with heat dissipation channel air outlet exhaust hot-blast water conservancy diversion to the exhaust vent through first guide plate and second guide plate, and the setting of flow distribution plate can be shunted hot-blast, makes its smooth process exhaust vent, and the setting of baffle can prevent hot-blast backward flow to heat dissipation channel in, realizes the high-efficient stable going on of heat dissipation.

Drawings

FIG. 1 is a perspective view of a charger according to the present invention;

FIG. 2 is a front view of the charger of FIG. 1;

FIG. 3 is an exploded view of the charger of the present invention shown in FIG. 1;

FIG. 4 is an exploded view of a charging module of the charger of the present invention;

fig. 5 is a left side view of a charging module of the charger of the present invention;

FIG. 6 isbase:Sub>A cross-sectional view of the charging module of the charger of FIG. 5 along the direction A-A;

FIG. 7 is a left side view of the charger of the present invention;

FIG. 8 is a cross-sectional view of the charger of FIG. 7 taken along the direction B-B;

fig. 9 is a front view of a charging module of the charger of the present invention;

fig. 10 is a cross section along the direction C-C of the charging module of the charger of fig. 9.

Detailed Description

The charger of the present invention will be described in detail with reference to the accompanying drawings.

As shown in fig. 1 to 10, the charger of the present invention includes a housing structure 2, a charging module 1 disposed in the housing structure 2, an electrical connection line 4 electrically connected to the charging module 1, and a charging gun 5.

As shown in fig. 3 to 6, 9 and 10, the charging module 1 includes a first heating power module 12, a second heating power module 13, a system control module 11, an ac filter module 14 and a dc filter module 15. The charging module 1 is designed in a plurality of modularization modes through each electronic component used for charging the electric automobile, so that the structure of the electronic component can be simplified, the disassembly and maintenance are convenient, and the maintenance cost is low. Further, the first heating power module 12 includes a plurality of sets of switch circuits electrically connected to each other, so that the output voltage can be adjusted by controlling the on-off state of the switch circuits, and the requirement for adjusting the charging voltage of the electric vehicle can be met. Further, the second heating power module 13 includes a plurality of heating components electrically connected to each other, such as an inductor, a capacitor, a transformer, and an overcurrent protection circuit, and because the heating power is large and the heat generation is large, the second heating power module and the first heating power module 12 are separately arranged, so that not only can the concentrated heat dissipation be conveniently performed, but also the normal operation of the switching circuit of the first heating power module 12 for adjusting the output voltage is not affected, and the damage to the switching circuit is reduced, and the service life of the second heating power module is effectively prolonged. Further, the first heating power module 12 is electrically connected to the second heating power module 13, and the connection method thereof belongs to the prior art, and therefore is not described herein again.

In other embodiments, the electronic components included in the first heating power module 12 and the second heating power module 13 may also be disposed as needed, for example, the first heating power module 12 includes an inductor, a capacitor, an overcurrent protection circuit, a transformer, and the second heating power module 13 includes a switch circuit, and the distribution relationship of the electronic components in the first heating power module 12 and the second heating power module 13 is not limited to the above manner.

Further, the system control module 11 is connected in parallel with the first heating power module 12 and the second heating power module 13, the system control module 11 is configured to detect relevant parameters, such as voltage, current, and the like, charged by the first heating power module 12 and the second heating power module 13, and the system control module 11 may be a detection circuit, such as a circuit for detecting current or voltage, or other chips capable of performing a detection function, and belongs to the prior art, and therefore, details are not repeated herein.

Further, the ac filtering module 14 is electrically connected to the second heating power module 13, the ac filtering module 14 is used for being electrically connected to an ac power source, such as a charging pile, so as to input ac power, and the ac filtering module 14 is an ac filtering circuit, and can filter a high-frequency signal of the input ac power to reduce interference of the signal. Further, the ac filtering module 14 is electrically connected to the electrical connection line 4, and then the electrical connection line 4 is electrically connected to an ac power source such as a charging pile, so as to electrically connect the charger of the present invention to an ac power source such as a charging pile.

Further, direct current filter module 15 with first power module 12 electricity is connected, and is preferred, direct current filter module 15 is direct current filter circuit to can carry out filtering processing to the direct current of first power module 12 output, filter wherein high frequency interference signal, make it can be safe quick charge for electric automobile, and is further, direct current filter module 15 is connected with rifle 5 electricity that charges, thereby can be so that the electric current of inputing rifle 5 that charges be the direct current after the filtering processing, then can carry out quick effectual charging to electric automobile, promptly only need with the rifle 5 interface that charges that inserts on electric automobile.

According to the invention, through the modular design of the modules, on one hand, the charger can be changed from a vehicle-mounted type to a wall-mounted type, so that the weight and the production cost of the electric automobile are reduced, and the social cost can be further reduced; on the other hand, through modular design, the damage condition of each module can be conveniently detected, and further targeted replacement or maintenance can be realized, so that the maintenance difficulty and the maintenance cost are reduced, and the maintenance efficiency is high; on the other hand, the plurality of electronic components are divided into the first heating power module 12 and the second heating power module 13, so that the electronic components can be conveniently and effectively operated, the damage of the electronic components is reduced, and the electronic components can be intensively subjected to heat dissipation treatment, so that the heat dissipation path is shortened, and the heat dissipation efficiency is improved.

As shown in fig. 4 to 6, 9 and 10, further, the charging module 1 further includes a heat dissipation channel 16 disposed between the first heat generation power module 12 and the second heat generation power module 13. The heat dissipation channel 16 is arranged between the first heating power module 12 and the second heating power module 13, so that heat generated by the first heating power module 12 and the second heating power module 13 can be timely concentrated in the heat dissipation channel 16 and then be intensively discharged, the heat dissipation efficiency can be obviously improved, and electronic components on the first heating power module 12 and the second heating power module 13 are prevented from being damaged due to high temperature, and the protection effect is effectively achieved; preferably, the charging module 1 further includes an air extractor 10 disposed at one end of the heat dissipation channel 16, the air extractor 10 may be a fan or other structures having an air extraction effect, the air extractor 10 may extract external air into the heat dissipation channel 16 and then discharge the air, so that heat concentrated on the heat dissipation channel 16 can be timely dissipated, the heat dissipation efficiency can be remarkably improved, and the time can be saved, so that the first heating power module 12 and the second heating power module 13 can normally and permanently operate.

As shown in fig. 4, preferably, the system control module 11 is located on a side of the first heat generation power module 12 away from the second heat generation power module 13, and further, the charging module 1 further includes a shielding plate 17, where the shielding plate 17 is located between the system control module 11 and the first heat generation power module 12, so as to shield the system control module 11 and the first heat generation power module 12, and prevent signal interference between the two, so that the two can operate stably.

Further, the alternating current filter module 14 is in the second heating power module 13 deviates from one side of the first heating power module 12, the system control module 11 and the first heating power module 12 are arranged on one side of the heat dissipation channel 16, the first heating power module 12 is close to the heat dissipation channel, the second heating power module 13 and the alternating current filter module 14 are arranged on the other side of the heat dissipation channel 16, and the second heating power module 13 is close to the heat dissipation channel 16, so that reasonable layout among the plurality of modules can be achieved, the first heating power module 12 and the second heating power module 13 can be intensively cooled, the heat dissipation efficiency is high, and an effective protection effect can be achieved.

As shown in fig. 4, the second heat-generating power module 13 further includes a fixing frame 132 covering the outside thereof, and the second heat-generating power module 13 is preferably fixed in the fixing frame 132 so as to be protected.

As shown in fig. 3 to 6, 9 and 10, preferably, the charging module 1 further includes a lower case 18 and an upper case 19, and further, the system control module 11, the first heating power module 12 and the shielding plate 17 are fixed in the upper case 19, and the second heating power module 13, the ac filter module 14 and the dc filter module 15 are fixed in the lower case 18, so that a plurality of modules can be effectively assembled and fixed. Further, the heat dissipation channel 16 is located between the upper casing 19 and the lower casing 18, so that heat in the heat dissipation channel 16 can be dissipated from the side surface of the heat dissipation channel in time, the heat dissipation efficiency is improved, and the heat is prevented from flowing into the upper casing 19 or the lower casing 18.

Further, the charging module 1 further includes a first circuit board 111, a second circuit board 121, a third circuit board 131, and a fourth circuit board 141, and further, the system control module 11 is disposed on the first circuit board 111, the first heating power module 12 is disposed on the second circuit board 121, the second heating power module 13 is disposed on the third circuit board 131, the ac filter module 14 is disposed on the fourth circuit board 14, and preferably, the dc filter module 15 is disposed on the third circuit board 131. Further, the first circuit board 111 and the second circuit board 121 are detachably fixed in the upper case 19, and can be detachably connected by a fastening manner of a fastening block and a fastening groove, or by other detachable connection manners; the third circuit board 131 and the fourth circuit board 141 are detachably fixed in the lower case 18, and can be detachably connected through a fastening manner of a fastening block and a fastening groove, and also can be detachably connected through other detachable connection manners, the first circuit board 111 and the second circuit board 121 are detachably fixed in the upper case 19, the third circuit board 131 and the fourth circuit board 141 are detachably fixed in the lower case 18, so that the system control module 11 and the first heating power module 12 are fixed in the upper case 19, the second heating power module 12, the ac filtering module 14 and the dc filtering module 15 are fixed in the lower case 18, and the disassembly can be conveniently performed, the maintenance is convenient, and the difficulty and the maintenance cost of the maintenance are reduced. Preferably, the first circuit board 111 is an aluminum-based circuit board, so that an effective heat dissipation effect can be achieved.

As shown in fig. 1 to 3, 7 and 8, the housing structure 2 includes a frame 21, a cover plate 22 located above the frame 21, and a hanging plate 23 located below the frame 21. The frame body 21 is configured to accommodate the charging module 1, and further, the charging module 1 is detachably fixed in the frame body 21, and can be detachably connected by a fastening manner of a fastening block and a fastening groove, or can be detachably connected by other manners. Further, apron 22 detachable is fixed in on the upper surface of framework 21 to can cover the upper end of framework 21, it is preferred, apron 22 with framework 21 buckle is connected, thereby can make things convenient for apron 22 to dismantle, so that take out the maintenance with its inside module 1 that charges, it is further, can set up display screen (not shown in the drawing) on the upper surface of apron 22, thereby can show the relevant information that charges, the preferred touch-control display screen of display screen, the person of facilitating the use inputs relevant information and realizes man-machine interaction. Furthermore, the frame body 21 is fixedly connected with the wall hanging plate 23, and further, a side surface of the wall hanging plate 23 away from the frame body 21 can be provided with a hook or a hanging groove for hanging, so that the wall hanging plate can be hung on a wall surface or a supporting frame or other supporting structures, and the charger of the invention is convenient to use.

Further, the frame body 21 with be equipped with on the side that the heat dissipation passageway air intake is relative a plurality of with the fresh air inlet 211 of 16 air intakes of heat dissipation passageway intercommunication, be equipped with a plurality of exhaust vents 212 on the side that is adjacent with the side that is equipped with the fresh air inlet 211 on the frame body 21 to can make outside air in the fresh air inlet 211 enters into the heat dissipation passageway 16, take away the back with the heat in the heat dissipation passageway 16, discharge through the exhaust vents 212 again, realize the quick effectual heat dissipation of module 1 that charges and handle, improve radiating efficiency, make radiating more abundant.

Further, as shown in fig. 3 and 8, the charger of the present invention further includes a flow guiding assembly 3 disposed in the housing structure 2. Diversion assembly 3 set up in heat dissipation channel 16's air outlet with discharge to exhaust vent 212 with the discharged hot-air water conservancy diversion of heat dissipation channel 16 between the exhaust vent 212, it is preferred, diversion assembly 3's head end with heat dissipation channel 16's air outlet is relative, diversion assembly 3's tail end with the exhaust vent 212 is relative to make the 16 air outlet exhaust hot-air of heat dissipation channel smoothly discharge from exhaust vent 212 behind diversion assembly 3's the water conservancy diversion effect, improve the efficiency that hot-air flows, make timely discharge of hot-air.

Preferably, the flow guide assemblies 3 are two and symmetrically arranged relative to the central axis of the charging module 1 in the width direction. Further, the flow guiding assembly 3 includes a first flow guiding plate 31, a second flow guiding plate 32, a flow dividing plate 33 and a baffle 34. The head end of the first air deflector 31 is opposite to the air outlet of the heat dissipation channel 16, so that the hot air exhausted from the heat dissipation channel 16 is guided to the second air deflector 32 through the first air deflector 31, and the tail end of the first air deflector 31 is fixedly connected with the inner surface of the frame body 21, so that the first air deflector 31 is fixed in the frame body 21. The head end of second guide plate 32 with the tail end of first guide plate 32 sets up relatively, second guide plate 32 can be with hot-blast water conservancy diversion exhaust vent 212 and the flow distribution plate 33 department of first guide plate 32 water conservancy diversion, the tail end of second guide plate 33 with exhaust vent 212 is relative and with the internal surface fixed connection of framework 21 to be fixed in second guide plate 33 in the framework 21. The head end of flow distribution plate 33 is just to the side of charging module 1, flow distribution plate 33's tail end with the internal surface fixed connection of framework 21, it is further, flow distribution plate 33's tail end is just right exhaust vent 212, a plurality of exhaust vent 212 are in flow distribution plate 33's the left and right sides, as shown in the figure to can discharge from exhaust vent 212 to the hot-blast of water conservancy diversion, and play the effect of reposition of redundant personnel. Baffle 34 is located exhaust vent 212 deviates from one side of first guide plate 31, baffle 34 one end with the internal surface fixed connection of framework 21, baffle 34's the other end is close to on the side of the module of charging 1, it is preferred, baffle 34's the other end paste and is in on the side of the module of charging 1 to can make the hot-blast whole process exhaust vent 212 discharge, prevent that hot-blast air from flowing to the air intake department of radiating passage 16 influences the radiating efficiency to first heating power module 12 and second heating power module 13, be favorable to improving radiating efficiency, fully protect the electronic components in the module of charging 1.

As shown in fig. 1 to 10, when the charger of the present invention is used, the electric connection line 4 is electrically connected to the charging pile, so that an alternating current can be introduced, the alternating current is filtered by the alternating current filter module 14 and then transmitted to the second heating power module 14, the alternating current is transformed and converted into a direct current by the second heating power module 14 and then transmitted to the first heating power module 12, the alternating current is processed by the switch module of the first heating power module 12 to obtain a required voltage, the direct current is filtered by the direct current filter module 15 and then transmitted to the charging gun 5, and the electric vehicle is charged by the charging gun 5. In the using process, the first heating power module 12 and the second heating power module 13 can quickly flow the generated heat and concentrate the generated heat in the heat dissipation channel 16, the air extractor 10 can extract the outside air into the heat dissipation channel 16 through the air inlet holes 211 to take away the heat in the heat dissipation channel 16, and then the exhausted hot air is quickly exhausted from the air outlet holes 212 through the flow guiding effect of the first flow guiding plate 31 and the second flow guiding plate 32 of the flow guiding assembly 3, so that the heat dissipation efficiency is improved, the time is saved, meanwhile, the arrangement of the baffle 34 can prevent the exhausted hot air from flowing back into the heat dissipation channel 16 from the air inlet holes of the heat dissipation channel 16, the heat dissipation efficiency of electronic components in the charging module 1, particularly the electronic components of the first heating power module 12 and the second heating power module 13 is ensured, so that the electronic components can normally operate, and the service life of the electronic components is prolonged. In addition, the charging module 1 is designed into a plurality of modules, and the electronic components mainly generating heat are divided into the first heating power module 12 and the second heating power module 13 which are positioned at two sides of the heat dissipation channel 16, so that the structure of each module can be conveniently detected and maintained, the maintenance convenience is improved, the maintenance cost is reduced, the heat dissipation efficiency can be improved, the centralized heat dissipation of the electronic components mainly generating heat can be conveniently realized, the generated heat can be quickly guided and discharged under the arrangement of the guide assembly 3, the heat dissipation efficiency is improved, and the stable and long-term operation of the charging module 1 is ensured. So far, the use process of the charger is described.

The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. The utility model provides a machine charges, includes shell structure, set up in the interior module and the rifle that charges of charging of shell structure, its characterized in that: the charging module comprises a system control module, a first heating power module, a second heating power module arranged opposite to the first heating power module, an alternating current filtering module and a direct current filtering module, wherein the alternating current filtering module and the direct current filtering module are used for being electrically connected with an alternating current power supply;

the charging module further comprises a heat dissipation channel, and the heat dissipation channel is located between the first heating power module and the second heating power module;

the shell structure further comprises a frame body, a plurality of air outlet holes are formed in the frame body, and the charger further comprises a flow guide assembly arranged between the air outlet of the heat dissipation channel and the air outlet holes so as to guide hot air of the heat dissipation channel to the air outlet holes;

the guide assembly comprises a first guide plate and a second guide plate, the head end of the first guide plate is over against the air outlet of the heat dissipation channel, the head end of the second guide plate is aligned with the tail end of the first guide plate, and the tail end of the second guide plate is over against the air outlet;

the flow guide assembly further comprises a baffle, the baffle is located at one side, away from the first flow guide plate, of the air outlet, one end of the baffle is fixedly connected with the inner surface of the frame body, and the other end of the baffle is attached to the side face of the charging module.

2. The charger according to claim 1, characterized in that: the charging module further comprises an air extractor which is positioned in the heat dissipation channel.

3. The charger according to claim 2, characterized in that: the charging module further comprises an upper shell and a lower shell, and the heat dissipation channel is located between the upper shell and the lower shell.

4. The charger according to claim 3, characterized in that: the first heating power module is fixed in the upper shell, and the second heating power module is fixed in the lower shell.

5. The charger according to claim 4, characterized in that: the system control module is fixed in the upper shell, and the alternating current filtering module and the direct current filtering module are fixed in the lower shell.

6. The charger according to claim 1, characterized in that: the shell structure further comprises a wall hanging plate arranged below the frame body, and the frame body is fixedly connected with the wall hanging plate.