A power supply power distribution assembly and battery swap station charging system backend machine

Abstract

The utility model provides a kind of power supply power distribution assembly and battery swap station charging system back-end machine, power supply power distribution assembly includes: installation unit, including upper mounting plate and lower mounting plate, between upper mounting plate and lower mounting plate are equipped with several transverse module output parallel copper bars, several power supply power distribution boards and several power supply power distribution board mounting plates;It further includes power supply power distribution protection plate, power board isolation support and several longitudinal module output bus copper bars;Power board isolation support is located at one side of installation unit, and power supply power distribution protection plate is connected to installation unit by power board isolation support;Longitudinal module output bus copper bar is located at the other side of installation unit, and longitudinal module output bus copper bar is connected to lower mounting plate by insulating support;A kind of back-end machine provided by the utility model can simultaneously output multiple charging circuits, cabinet modular assembly, according to function partition, install transfer labor-saving, and charge and replace electricity switching freedom, maintenance is convenient, simple operation.

Description

Technical Field

[0001] This utility model belongs to the field of new energy technology, specifically a power distribution component and a back-end unit for a battery swapping station charging system. Background Technology

[0002] Charging stations are mainly used to charge electric vehicles. With the popularization of new energy vehicles, the demand for charging infrastructure is growing, and charging stations are becoming increasingly integrated into our daily lives.

[0003] With the increasing number of light electric trucks on the market, there is a greater demand for energy replenishment efficiency. Conventional charging piles cannot meet this demand in terms of power and charging time. Therefore, it is necessary to use a battery swapping system to integrate a certain number of charging modules to charge simultaneously in order to meet the needs of the large number of electric trucks on the market and the desire for the shortest possible charging time.

[0004] Battery swapping, with its high efficiency, cost optimization, and potential for large-scale deployment, has become one of the optimal solutions for replenishing energy for commercial electric light trucks and will play a core role in the future new energy logistics system. However, existing battery swapping station charging systems are not yet mature enough. As the core power distribution component of the system, traditional power distribution components have fixed power distribution, and the copper busbar connections are prone to overheating, insulation failure, and short circuits. Moreover, disassembly and replacement are complex and time-consuming. In addition, looking at the entire battery swapping system, there are also problems such as low heat dissipation efficiency of traditional charging pile cabinets, uncontrolled temperature rise when multiple modules are running simultaneously, simple or unreasonable internal structure arrangement, and difficulty in transporting heavy cabinets. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a power distribution component and a back-end unit for a battery swapping station charging system. The power distribution component can freely switch power and has high heat dissipation efficiency. The back-end unit can output multiple charging lines simultaneously to meet the charging needs of multiple battery groups. The back-end unit cabinet is modularly assembled and divided into functional zones, making installation and transportation convenient and labor-saving. It also allows for free switching between charging and battery swapping, convenient maintenance, and simple operation.

[0006] This utility model is implemented as follows:

[0007] First aspect

[0008] A power distribution component, comprising:

[0009] The mounting unit includes an upper mounting plate and a lower mounting plate;

[0010] Between the upper mounting plate and the lower mounting plate are provided several horizontal module output parallel copper busbars, several power distribution boards and several power distribution board mounting plates.

[0011] Each of the power distribution boards is provided with several terminals and several high-power relays;

[0012] Each of the horizontal modules outputs a parallel copper busbar with several elongated holes; one end of each of the horizontal modules outputs a parallel copper busbar is raised, and the other end is connected to the terminal of the power distribution board.

[0013] Each of the power distribution board mounting plates is provided with a plurality of insulating support studs on its side, and the power distribution board is fixed to the power distribution board mounting plate by the insulating support studs.

[0014] It also includes a power distribution protection board, a power board isolation bracket, and several vertical module output busbars;

[0015] The power board isolation bracket is located on one side of the mounting unit, and the power distribution protection plate is connected to the mounting unit through the power board isolation bracket; the power distribution protection plate has several air holes.

[0016] The longitudinal module output busbar is located on the other side of the mounting unit. Each longitudinal module output busbar is provided with an insulating support. The longitudinal module output busbar is connected to the lower mounting plate through the insulating support. The longitudinal module output busbar is connected to the terminals on the power distribution board.

[0017] Furthermore, the upper mounting plate and the lower mounting plate are formed by bending sheet metal parts to form a box body, with extended surfaces on both sides and a number of screw holes on the remaining surfaces; the extended surfaces are provided with mounting and fixing holes.

[0018] Furthermore, the upper mounting plate has a wire groove on its inner side.

[0019] Second aspect

[0020] A back-end unit for a battery swapping station charging system includes a power distribution component as described above and a cabinet. The cabinet includes a first functional mechanism, a main control mechanism, a second functional mechanism, a third functional mechanism, a maintenance mechanism, and a fourth functional mechanism. The first functional mechanism, the main control mechanism, and the second functional mechanism are arranged sequentially from left to right on the front of the cabinet, and the third functional mechanism, the maintenance mechanism, and the fourth functional mechanism are arranged sequentially from left to right on the back of the cabinet.

[0021] The first functional mechanism consists of, from top to bottom, a first module compartment, a first power distribution compartment, and a first battery swapping DC output compartment; the exterior of the first functional mechanism is equipped with a first module air inlet door.

[0022] The main control mechanism consists of a main control compartment and an AC power input compartment from top to bottom. The AC power input compartment is equipped with two sets of AC circuit breakers and AC contactors, and the AC power input compartment is equipped with a circuit breaker protective plate. The main control mechanism is equipped with a main control door on the outside.

[0023] The second functional mechanism consists of, from top to bottom, a second module compartment, a second power distribution compartment, and a second battery swapping DC output compartment; the exterior of the second functional mechanism is equipped with a second module air inlet door.

[0024] The third functional mechanism has a third power distribution compartment in the middle and a third battery swapping DC output compartment at the bottom; the third functional mechanism also has a first module air outlet door on its exterior.

[0025] The maintenance mechanism is equipped with a maintenance compartment, and the exterior of the maintenance mechanism is equipped with a maintenance door.

[0026] The fourth functional mechanism has a fourth power distribution compartment in the middle and a fourth battery swapping DC output compartment at the bottom; the fourth functional mechanism also has a second module air outlet door on its exterior.

[0027] The power distribution components are installed in the first, second, third, and fourth power distribution compartments.

[0028] Furthermore, the upper side of the first module air inlet door and the second module air inlet door, and the lower side of the main control door are provided with air inlet grille plates, and the air inlet grille plates are provided with wire mesh and filter cotton.

[0029] Several sets of switching power supplies and relays are provided on the lower side of the air inlet doors of the first and second modules.

[0030] The first module air outlet door and the second module air outlet door are provided with an air outlet grille on the upper side, and a cooling fan is provided on the inner side corresponding to the air outlet grille. The top edge and the outer side of the cooling fan are provided with a fan baffle.

[0031] The third and fourth functional mechanisms are provided with module air outlet baffles on their upper sides. When the first module air outlet door and the second module air outlet door are closed, the fan baffle of the cooling fan is connected to the module air outlet baffle to form a sealed chamber.

[0032] Furthermore, the first module compartment and the second module compartment are equipped with several sets of charging modules arranged in a matrix.

[0033] Furthermore, the first, second, third, and fourth battery swapping DC output compartments are equipped with DC contactors, fuses, shunts, and connecting copper busbars, and are externally equipped with DC output protection plates.

[0034] Furthermore, the main control compartment is equipped with auxiliary electrical components, including a main control board, a switching power supply, a meter, a relay, a socket, and terminals.

[0035] Furthermore, the maintenance compartment is equipped with an insulation detection board and a voltage sampling board assembly.

[0036] Furthermore, the cabinet has lifting eye screws at the four corners of the top; the cabinet has a base at the bottom; the base has cutouts at positions corresponding to the first functional mechanism, main control mechanism, second functional mechanism, third functional mechanism, maintenance mechanism and fourth functional mechanism for wiring; and the base has several forklift holes on its inner sides.

[0037] The advantages of this utility model are:

[0038] The power distribution assembly composed of the above components allows each charging module to switch power freely. With the cooperation of the power board isolation bracket and the power distribution board protection plate, the heat dissipation efficiency is greatly improved, preventing local overheating and damage to the internal power devices. The module output busbar is connected to the terminals on the lower mounting plate and the power distribution board through the insulating support, which can ensure the output of large DC power.

[0039] The charging system of the battery swapping station has powerful back-end functions, capable of outputting multiple charging lines simultaneously to meet the charging needs of multiple battery groups. The two high-power module compartments can independently allocate power, allowing for free switching between charging and battery swapping, convenient maintenance, and simple operation. The cabinet has a compact structure, novel design, and modular assembly. It is divided into functional zones, and all areas involving high current and high voltage are designed with protective plates. The design of the lifting eye screws and base makes installation and transportation convenient and labor-saving. Attached Figure Description

[0040] The present invention will now be further described with reference to the accompanying drawings and embodiments.

[0041] Figure 1 A schematic diagram of the disassembled structure of the power distribution component;

[0042] Figure 2 A schematic diagram of the assembly structure of the power distribution component;

[0043] Figure 3 A frontal structural diagram of the internal components of the functional mechanism;

[0044] Figure 4A schematic diagram of the rear structure of the internal components of the functional mechanism;

[0045] Figure 5 A schematic diagram of the front-side closed door structure of the charging back-end unit of the battery swapping station;

[0046] Figure 6 A schematic diagram of the rear door closing structure of the charging system back-end unit of the battery swapping station;

[0047] Figure 7 Schematic diagram of the front door opening structure of the charging back-end unit of the battery swapping station Figure 1 ;

[0048] Figure 8 Schematic diagram of the front door opening structure of the charging back-end unit of the battery swapping station Figure 2 ;

[0049] Figure 9 Schematic diagram of the rear door opening structure of the charging back-end unit of the battery swapping station Figure 1 ;

[0050] Figure 10 Schematic diagram of the rear door opening structure of the charging back-end unit of the battery swapping station Figure 2 ;

[0051] Figure 11 A split view of the main components on the front of the charging back-end unit of the battery swapping station;

[0052] Figure 12 A disassembled view of the main components on the back of the charging system at a battery swapping station.

[0053] Figure 13 A schematic diagram of the internal heat dissipation of the cabinet for the back-end unit of the battery swapping station charging system.

[0054] Explanation of icon numbers:

[0055] Power distribution component 100,

[0056] Mounting unit 1, upper mounting plate 11, lower mounting plate 12, extension surface 13, screw hole 14, mounting fixing hole 15, wire groove 16, horizontal module output parallel copper busbar 2, power distribution board 3, terminal 31, high power relay 32, power distribution board mounting plate 4, insulating support stud 41, power distribution protection plate 5, power board isolation bracket 6, vertical module output busbar 7, insulating support 71;

[0057] The battery swapping station charging system backend unit is 300mm, and the cabinet is 200mm.

[0058] First functional mechanism 201, first module compartment 2011, first power distribution compartment 2012, first battery swapping DC output compartment 2013, first module air inlet door 2014, air inlet grille 20141.

[0059] Main control mechanism 202, main control compartment 2021, auxiliary electrical components 20211, AC power input compartment 2022, AC circuit breaker 20222, AC contactor 20223, main control door 2023, operation indicator light 20231, central control touch screen 20232, emergency stop switch button 20233, second module air inlet door 2034.

[0060] The second functional mechanism 203, the second module compartment 2031, the charging module 8, the AC input terminal 81, the DC output terminal 82, the second power distribution compartment 2032, the second battery swapping DC output compartment 2033, and the second module air inlet door 2034 are all included.

[0061] The following components are included: third functional mechanism 204, third power distribution compartment 2041, third DC output battery swapping compartment 2042, DC contactor 20421, fuse 20422, shunt 20423, connecting copper busbar 20424, first module air outlet door 2043, air outlet grille 20431, cooling fan 20432, fan baffle 20433, module air outlet baffle 20434, and DC output protection plate 2044.

[0062] Maintenance mechanism 205, maintenance compartment 2051, maintenance door 2052, insulation detection board 20511, voltage sampling board assembly 20512.

[0063] Fourth functional mechanism 206, fourth power distribution compartment 2061, fourth DC output battery swapping compartment 2062, second module air outlet door 2063.

[0064] Eye bolt 2001, base 2002, forklift hole 20021. Detailed Implementation

[0065] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model. Example 1

[0066] This embodiment provides a power distribution component 100, such as... Figures 1 to 4 As shown, it includes:

[0067] Mounting unit 1, the mounting unit includes an upper mounting plate 11 and a lower mounting plate 12;

[0068] The upper mounting plate 11 and the lower mounting plate 12 are formed by bending sheet metal of a certain thickness to form a box. Extended surfaces 13 are provided on both sides, and several screw holes 14 are provided on the remaining surfaces for fixing the components on the power distribution assembly 100.

[0069] The extended surface is provided with mounting holes 15 for mounting on the back-end machine;

[0070] The upper mounting plate 11 has a wire groove 16 on its inner side to facilitate wire routing during power supply and avoid messy wiring.

[0071] Between the upper mounting plate 11 and the lower mounting plate 12, there are several horizontal module output parallel copper busbars 2, several power distribution boards 3 and several power distribution board mounting plates 4.

[0072] Each of the power distribution boards 3 is provided with a number of terminals 31 and a number of high-power relays 32;

[0073] Each of the horizontal modules outputs a parallel copper busbar 2 with several elongated holes for easy connection to the terminals 31 of the power distribution board 3.

[0074] Each of the horizontal modules outputs a parallel copper busbar 2 with one end raised, which is connected to the wire of the DC output terminal 82 of the module, and the other end is connected to the terminal 31 of the power distribution board 3.

[0075] Each of the power distribution board mounting plates 4 is provided with a plurality of insulating support studs 41 on its side, and the power distribution board 3 is fixed on the power distribution board mounting plate 4 by the insulating support studs 41.

[0076] It also includes a power distribution protection board 5, a power board isolation bracket 6, and several vertical module output busbars 7;

[0077] The power board isolation bracket 6 is located on one side of the mounting unit 1, and the power distribution protection plate 5 is connected to the mounting unit 1 through the power board isolation bracket 6; the power board isolation bracket 6 and the power distribution protection plate 5 together form a safety structure to prevent personnel from touching it, and both are made of sheet metal with a certain strength and thickness.

[0078] The power distribution protection plate 5 has several air holes for heat dissipation and ventilation, preventing local overheating and damage to the internal power devices.

[0079] The longitudinal module output busbar 7 is located on the other side of the mounting unit 1. Each longitudinal module output busbar 7 is provided with an insulating support 71. The longitudinal module output busbar 7 is connected to the lower mounting plate 12 through the insulating support 71. The longitudinal module output busbar 7 is connected to the terminal 31 on the power distribution board 3. The main purpose is to ensure the output of large DC power.

[0080] like Figures 3 to 4 As shown, the working principle of the power distribution component 100 provided in this embodiment is as follows:

[0081] Alternating current (AC) is supplied to the AC input terminal 81 of the charging module 8 through a circuit breaker and an AC contactor. The AC is then rectified inside the charging module to convert the AC to DC. The DC output terminal 82 of the module is connected to the DC terminal of the power distribution component 100. The positive and negative terminals of the DC output terminals 82 of the 12 charging modules 8 are respectively connected to the terminals on the power distribution component 100. The terminals are the raised ends of the parallel copper busbars 2 of the horizontal module output. The power distribution component 100 includes 6 power distribution boards 3, and each power distribution board 3 is equipped with 12 high-power relays 32.

[0082] Assuming the module has an output power of 30kW, after the power distribution component 100 distributes the power, 5kW is allocated to each power distribution board 3, and the 12 charging modules have a total output power of 60kW. After passing through the vertical module output busbar 7, each output has a power of 60kW. The back-end unit of the power distribution component 100 provided in this embodiment has a total of 24 charging modules 8, that is, a total power of 720kW, divided into 6 channels on the left and 6 channels on the right, each channel having a power of 60kW. This allows the power of each charging module to be freely switched. Example 2

[0083] like Figures 3 to 13 As shown, this embodiment provides a back-end unit 300 for a battery swapping station charging system, including a power distribution component 100 as described in Embodiment 1 and a cabinet 200. The cabinet 200 includes a first functional mechanism 201, a main control mechanism 202, a second functional mechanism 203, a third functional mechanism 204, a maintenance mechanism 205, and a fourth functional mechanism 206. The first functional mechanism 201, the main control mechanism 202, and the second functional mechanism 203 are arranged sequentially from left to right on the front of the cabinet 200, and the third functional mechanism 204, the maintenance mechanism 205, and the fourth functional mechanism 206 are arranged sequentially from left to right on the back of the cabinet 200.

[0084] The first functional mechanism 201 is provided with a first module compartment 2011, a first power distribution compartment 2012 and a first battery swapping DC output compartment 2013 from top to bottom; the first functional mechanism 201 is provided with a first module air inlet door 2014 on the outside;

[0085] The main control mechanism 202 is provided with a main control compartment 2021 and an AC power input compartment 2022 from top to bottom. The main control compartment 2021 is provided with auxiliary electrical components 20211, which include a main control board, a switching power supply, a meter, a relay, a socket, and a terminal block.

[0086] The AC input compartment 2022 is equipped with two sets of AC circuit breakers 20222 and AC contactors 20223, and the AC input compartment 2022 is equipped with a circuit breaker protective plate 20221 outside the AC input compartment 2022;

[0087] The main control mechanism 202 is provided with a main control door 2023 on the outside; the main control door 2023 is provided with a running indicator light 20231, a central control touch screen 20232 and an emergency stop switch button 20233 on the door panel, so that the operation status of the battery swapping system can be clearly understood without opening the door;

[0088] The second functional mechanism 203 is provided with a second module compartment 2031, a second power distribution compartment 2032, and a second battery swapping DC output compartment 2033 from top to bottom; the second functional mechanism 203 is provided with a second module air inlet door 2034 on the outside;

[0089] The first module compartment 2011 and the second module compartment 2031 are equipped with several sets of charging modules 8 arranged in a matrix.

[0090] The third functional mechanism 204 has a third power distribution compartment 2041 in the middle and a third battery swapping DC output compartment 2042 at the bottom; the third functional mechanism 204 has a first module air outlet door 2043 on the outside.

[0091] The maintenance mechanism 205 is provided with a maintenance compartment 2051, and the maintenance mechanism is provided with a maintenance door 2052 on the outside; the maintenance compartment 2051 is provided with functional components such as an insulation detection board 20511 and a voltage sampling board assembly 20512 that do not often require intuitive data.

[0092] The fourth functional mechanism 206 has a fourth power distribution compartment 2061 in the middle and a fourth battery swapping DC output compartment 2062 at the bottom; the fourth functional mechanism 206 has a second module air outlet door 2063 on the outside.

[0093] The power distribution compartments on the front and back of the cabinet 200 operate independently.

[0094] The power distribution assembly 100 is provided in the first power distribution compartment 2012, the second power distribution compartment 2032, the third power distribution compartment 2041 and the fourth power distribution compartment 2061.

[0095] The first module air inlet door 2014 and the second module air inlet door 2034 are provided with an air intake grille 20141 on the upper side and the main control door 2023 on the lower side. The air intake grille 20141 is provided with wire mesh and filter cotton to prevent dust and insects.

[0096] The first module air inlet door 2014 and the second module air inlet door 2034 are provided with several sets of switching power supplies and relays on the lower side for controlling the feedback function of the battery.

[0097] The first module air outlet door 2043 and the second module air outlet door 2063 are provided with an air outlet grille 20431 on the upper side. A cooling fan 20432 is provided on the inner side corresponding to the air outlet grille 20431, which can effectively exchange hot and cold air and control the temperature rise of the charging module 8 within a reasonable range. The top edge and the outer side of the cooling fan 20432 are provided with a fan baffle 20433.

[0098] The third functional mechanism 204 and the fourth functional mechanism 206 are provided with module air outlet baffles 20434 on the upper side. When the first module air outlet door 2043 and the second module air outlet door 2063 are closed, the fan baffle 20433 of the cooling fan 20432 is connected to the module air outlet baffle 20434 to form a sealed chamber, which can effectively exchange hot and cold air and control the temperature rise of the charging module 8 within a reasonable range.

[0099] The internal heat dissipation method of the cabinet 200 is as follows Figure 13 As shown in the figure, the arrows indicate the direction of the heat dissipation airflow: after the airflow enters through the air inlet door, it is cooled by the charging module 8, and then exits through the air outlet door.

[0100] The first battery swapping DC output compartment 2013, the second battery swapping DC output compartment 2033, the third battery swapping DC output compartment 2042 and the fourth battery swapping DC output compartment 2062 are equipped with DC contactors 20421, fuses 20422, shunts 20423 and connecting copper busbars 20424, which are connected to the power distribution assembly 100 above.

[0101] The first battery swapping DC output compartment 2013, the second battery swapping DC output compartment 2033, the third battery swapping DC output compartment 2042 and the fourth battery swapping DC output compartment 2062 are equipped with DC output protection plates 2044.

[0102] Each of the protective panels has ventilation holes to allow for air exchange, ensuring the normal operation of the equipment. Each of the six doors can be opened and closed independently and is equipped with an access control switch. Opening a door will shut down the system to ensure the safety of maintenance personnel.

[0103] The cabinet 200 has four lifting eye screws 2001 at the top corners; the cabinet 200 has a base 2002 at the bottom for mounting the cabinet 200. The base 2002 has cutouts at positions corresponding to the first functional mechanism 201, the main control mechanism 202, the second functional mechanism 203, the third functional mechanism 204, the maintenance mechanism 205, and the fourth functional mechanism 206 for wiring; the base 2002 has several forklift holes 20021 on its inner sides, so that the cabinet 200 can be hoisted, used, or installed on the ground, which is convenient and labor-saving.

[0104] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0105] The above embodiments and figures are not intended to limit the product form and style of this utility model. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of this utility model.

Claims

1. A power distribution component, characterized in that: include The mounting unit includes an upper mounting plate and a lower mounting plate; Between the upper mounting plate and the lower mounting plate are provided several horizontal module output parallel copper busbars, several power distribution boards and several power distribution board mounting plates. Each of the power distribution boards is provided with several terminals and several high-power relays; Each of the horizontal modules outputs a parallel copper busbar with several elongated holes; one end of each of the horizontal modules outputs a parallel copper busbar is raised, and the other end is connected to the terminal of the power distribution board. Each of the power distribution board mounting plates is provided with a plurality of insulating support studs on its side, and the power distribution board is fixed to the power distribution board mounting plate by the insulating support studs. It also includes a power distribution protection board, a power board isolation bracket, and several vertical module output busbars; The power board isolation bracket is located on one side of the mounting unit, and the power distribution protection plate is connected to the mounting unit through the power board isolation bracket; the power distribution protection plate has several air holes. The longitudinal module output busbar is located on the other side of the mounting unit. Each longitudinal module output busbar is provided with an insulating support. The longitudinal module output busbar is connected to the lower mounting plate through the insulating support. The longitudinal module output busbar is connected to the terminals on the power distribution board.

2. The power distribution component as described in claim 1, characterized in that: The upper and lower mounting plates are formed by bending sheet metal parts into a box body, with extended surfaces on both sides and several screw holes on the remaining surfaces; the extended surfaces are provided with mounting and fixing holes.

3. The power distribution component as described in claim 2, characterized in that: The upper mounting plate has a wire groove on its inner side.

4. A back-end unit for a battery swapping station charging system, characterized in that... The device includes a power distribution component as described in any one of claims 1-3 and a cabinet. The cabinet includes a first functional mechanism, a main control mechanism, a second functional mechanism, a third functional mechanism, a maintenance mechanism, and a fourth functional mechanism. The first functional mechanism, the main control mechanism, and the second functional mechanism are arranged sequentially from left to right on the front of the cabinet, and the third functional mechanism, the maintenance mechanism, and the fourth functional mechanism are arranged sequentially from left to right on the back of the cabinet. The first functional mechanism consists of, from top to bottom, a first module compartment, a first power distribution compartment, and a first battery swapping DC output compartment; the exterior of the first functional mechanism is equipped with a first module air inlet door. The main control mechanism consists of a main control compartment and an AC power input compartment from top to bottom. The AC power input compartment is equipped with two sets of AC circuit breakers and AC contactors, and the AC power input compartment is equipped with a circuit breaker protective plate. The main control mechanism is equipped with a main control door on the outside. The second functional mechanism consists of, from top to bottom, a second module compartment, a second power distribution compartment, and a second battery swapping DC output compartment; the exterior of the second functional mechanism is equipped with a second module air inlet door. The third functional mechanism has a third power distribution compartment in the middle and a third battery swapping DC output compartment at the bottom; the third functional mechanism also has a first module air outlet door on its exterior. The maintenance mechanism is equipped with a maintenance compartment, and the exterior of the maintenance mechanism is equipped with a maintenance door. The fourth functional mechanism has a fourth power distribution compartment in the middle and a fourth battery swapping DC output compartment at the bottom; the fourth functional mechanism also has a second module air outlet door on its exterior. The power distribution components are installed in the first, second, third, and fourth power distribution compartments.

5. The back-end unit of the battery swapping station charging system as described in claim 4, characterized in that: The first module air intake door and the second module air intake door are provided with air intake grille plates on the upper side and the main control door on the lower side. The air intake grille plates are provided with wire mesh and filter cotton. Several sets of switching power supplies and relays are provided on the lower side of the air inlet doors of the first and second modules. The first module air outlet door and the second module air outlet door are provided with an air outlet grille on the upper side, and a cooling fan is provided on the inner side corresponding to the air outlet grille. The top edge and the outer side of the cooling fan are provided with a fan baffle. The third and fourth functional mechanisms are provided with module air outlet baffles on their upper sides. When the first module air outlet door and the second module air outlet door are closed, the fan baffle of the cooling fan is connected to the module air outlet baffle to form a sealed chamber.

6. The back-end unit of the battery swapping station charging system as described in claim 4, characterized in that: The first module compartment and the second module compartment are equipped with several sets of charging modules arranged in a matrix.

7. The back-end unit of the battery swapping station charging system as described in claim 4, characterized in that: The first, second, third, and fourth battery swapping DC output compartments are equipped with DC contactors, fuses, shunts, and connecting copper busbars, and are externally equipped with DC output protection plates.

8. The back-end unit of the battery swapping station charging system as described in claim 4, characterized in that: The main control compartment is equipped with auxiliary electrical components, including a main control board, a switching power supply, a meter, a relay, a socket, and terminals.

9. The back-end unit of the battery swapping station charging system as described in claim 4, characterized in that: The maintenance compartment is equipped with an insulation detection board and a voltage sampling board assembly.

10. The back-end unit of the battery swapping station charging system as described in claim 4, characterized in that: The cabinet has four lifting eye screws at the top corners; the cabinet has a base at the bottom; the base has cutouts at the positions corresponding to the first functional mechanism, main control mechanism, second functional mechanism, third functional mechanism, maintenance mechanism and fourth functional mechanism for wiring; the base has several forklift holes on its inner sides.

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