Mobile multifunctional power supply system, mobile power supply equipment including the system, and power supply control method thereof

Abstract

The present invention relates to a movable multifunctional power supply system and a movable power supply device including the system and a power supply control method thereof, wherein the power supply system includes a DC charging pile unit, an AC charging pile unit, and also includes a battery module unit, a high-voltage box unit, an energy storage converter unit, an energy management system unit and a weak current power supply unit, wherein the battery module unit is connected to the high-voltage box unit; the high-voltage box unit is respectively connected to the energy management system unit, the energy storage converter unit, and the weak current power supply unit; the energy storage converter is respectively connected to the DC charging pile unit, the AC charging pile unit, the high-voltage box unit, and the energy management system unit; the energy management system unit is respectively connected to the high-voltage box unit, the energy storage converter unit, and the weak current power supply unit; the weak current power supply unit is respectively connected to the battery module unit, the high-voltage box unit, and the energy management system unit. The present invention can be used for mobile and fast charging of products of different specifications such as electric vehicles, and is suitable for popularization and application in the field of power supply.

Description

Technical Field

[0001] The present invention relates to the technical field of energy storage and power supply, and in particular to a mobile multifunctional power supply system, a mobile power supply device including the system, and a power supply control method thereof. Background Art

[0002] With the promotion of environmental protection and sustainable development, the application of new energy equipment such as electric vehicles is becoming more and more common, but the corresponding power supply facilities are relatively lagging behind and cannot fully meet the demand, especially for electric vehicles traveling long distances and at high speeds, whose users generally have charging anxiety. The existing power supply facilities are mainly fixed charging piles, which are generally installed in residential areas, parks, underground parking lots of shopping malls, highway service stations and other large places. If there is a demand for electricity on the road, it can basically not meet the demand, which is also a common difficulty for electric vehicle users; moreover, these fixed charging piles need to occupy land and fixed space, and there are generally some problems such as time-consuming and costly civil construction, and the difficulty of expanding capacity and laying cables, and the long cost recovery period. These problems are particularly prominent for the DC fast charging piles with large installed capacity; in addition, the AC slow charging piles and DC fast charging piles commonly configured in the existing charging piles mainly adopt AC charging technology, and their input is AC power. The types and specifications of the power-consuming equipment they serve are restricted to varying degrees, and the utilization rate is low.

[0003] In the prior art, patent CN114084012B discloses a movable charging pile for new energy vehicles and a working method thereof, wherein the charging pile comprises a base and a first support rod, the upper end of the first support rod being connected to the four corners of the lower end of the base by bolts; a slidable and adjustable locking seat structure being respectively installed on the left and right sides of the inner middle position of the base; a charging pile mechanism being respectively installed on the upper end of the slidable and adjustable locking seat structure; the patent facilitates the wire storage work during use by setting a butterfly spring between the fixed box and the winding roller, thereby preventing the wire from being messy and affecting the charging work; the movable function of the patent is to drive the charging pile by sliding a short distance on the slide rail support rod, but the construction mode of the fixed charging pile is still adopted when the charging pile of the patent is applied as a whole, and the power supply mode and the type of power supply equipment are still the traditional single mode. For another example, patent CN117984831A discloses a vehicle-mounted new energy charging pile, including a base, a charging pile body is arranged on the base, an extension frame is arranged on the charging pile body, a solar soft panel is laid on the extension frame, and the extension frame includes a bottom plate, the bottom plate is fixedly mounted on the charging pile body, support plates fixedly mounted on the four corners of the bottom plate, a folding plate of the hinged support plate, the end of the solar soft panel is adhered to the folding plate, a worm gear for driving the folding plate to flip, the worm gear is fixedly connected to the folding plate, and the worm gear meshing with the worm gear is rotatably mounted on the charging pile body; the patent can realize that during the charging process of the new energy vehicle, the light energy conversion charging is carried out by itself at the same time, thereby improving the efficiency of charging itself. Secondly, the device is detachable and the solar soft panel can be folded, so that the size of the device itself can be adjusted, which is convenient for the staff to carry the device; although the patent can realize long-distance flexible mobile power supply, it is still a single mode in terms of power supply mode and types of simultaneous power supply equipment, and cannot realize simultaneous power supply to multiple devices other than automobiles, nor can it provide multiple charging modes for electrical equipment such as automobiles.

[0004] In addition, patent CN107264317B provides a power supply system for charging electric vehicles, including a plurality of electric poles equidistantly installed vertically along the road, a guide rail fixedly installed on the electric pole and located above the road, a plurality of trolley assemblies slidably connected to the guide rail, a connecting plate connected to each trolley assembly, an aircraft movably connected above the connecting plate, and an electric vehicle traveling on the road; the patent is set beside the road, and can charge the electric vehicle in time on the road without time restrictions, and the driver can charge the electric vehicle while driving, saving the driver's waiting time for charging; the electric vehicle is powered by connecting the trolley assembly to the transmission line, which is more flexible than the charging pile, and the charging location is not restricted; however, the application of the patent still belongs to the application mode of fixed charging piles, and is not suitable for flexible and maneuverable movement of the charging pile as a whole, and it is still a single mode in terms of power supply mode and types of equipment that can be powered simultaneously. For example, patent CN117601706A discloses a power supply system and power supply method for new energy vehicles, including a charging module installed on the vehicle body, a cloud processing platform, a scheduling system, and a fixed charging station; an information processing module is also installed on the vehicle body, and the information processing module is electrically connected to the charging module, the purpose of which is to facilitate the transmission of signals from the fixed charging station to the information processing module, thereby forming an information network for multiple different vehicle bodies, so as to reasonably allocate the usage of charging piles and mobile battery packs inside the fixed charging station, and improve the utilization rate of charging piles and mobile battery packs inside different fixed charging stations; this patent is not only based on the application of fixed charging piles, but also still a single mode in terms of power supply mode and types of simultaneous power supply equipment, and it cannot realize simultaneous power supply to multiple devices outside the car, nor can it provide multiple charging modes for electrical equipment such as cars.

[0005] Therefore, there is an urgent need to research and develop better power supply systems and equipment to flexibly meet the power needs of new energy vehicles and other equipment of different types and specifications under different working conditions. Summary of the invention

[0006] The purpose of the present invention is to provide a mobile multifunctional power supply system and a mobile power supply device including the system, and a power supply control method thereof, in order to address the problems existing in the prior art, save construction land, significantly reduce investment costs, and flexibly meet the different charging needs of different users.

[0007] The technical solution to the problem solved by the present invention is: a mobile multifunctional power supply system, including a DC charging pile unit, an AC charging pile unit, and also including a battery module unit, a high-voltage box unit, an energy storage inverter unit, an energy management system unit and a weak current power supply unit, wherein the battery module unit is connected to the high-voltage box unit; the high-voltage box unit is respectively connected to the energy management system unit, the energy storage inverter unit, and the weak current power supply unit; the energy storage inverter is respectively connected to the DC charging pile unit, the AC charging pile unit, the high-voltage box unit, and the energy management system unit; the energy management system unit is respectively connected to the high-voltage box unit, the energy storage inverter unit, and the weak current power supply unit; the weak current power supply unit is respectively connected to the battery module unit, the high-voltage box unit, and the energy management system unit.

[0008] Furthermore, in the mobile multifunctional power supply system described in the present invention, the battery module unit includes more than two groups of battery modules, each group of the battery modules is provided with a battery pack and a battery management unit respectively connected to the battery pack; the battery modules are connected in series; the high-voltage box unit includes a battery cluster control unit; the battery management unit provided in each group of the battery modules is connected to the battery cluster control unit; the battery cluster control unit is respectively connected to the energy management system unit and the energy storage inverter unit.

[0009] Furthermore, in the mobile multifunctional power supply system described in the present invention, the weak current power supply unit includes a black start switch, an isolating switch power supply and a power supply module connected in sequence, the black start switch is connected to the high-voltage box unit, and the power supply module is connected to the energy management system unit.

[0010] Furthermore, the mobile multifunctional power supply system described in the present invention also includes a DC charging interface and an AC charging interface, the DC charging interface is connected to the high-voltage box unit, and the AC charging interface is connected to the energy storage inverter unit; wherein the DC charging interface does not include a low-voltage auxiliary power supply; the mobile multifunctional power supply system also includes a multi-specification voltage and power output interface unit, the multi-specification voltage and power output interface unit includes more than two groups of output interfaces, and each of the output interfaces is connected to the energy storage inverter unit.

[0011] Furthermore, in the mobile multifunctional power supply system described in the present invention, the DC charging pile unit can be connected to the mains or the energy storage inverter unit; the AC charging pile unit can be connected to the mains or the energy storage inverter unit; the energy storage inverter unit can be connected to the mains and the DC charging pile unit in parallel at the same time, and / or the energy storage inverter unit can be connected to the mains and the AC charging pile unit in parallel at the same time.

[0012] Furthermore, in the mobile multifunctional power supply system described in the present invention, the energy management system unit includes an industrial gateway, an industrial Ethernet switch and an industrial control all-in-one machine connected in sequence; the industrial gateway is connected to the high-voltage box unit; the industrial Ethernet switch is connected to the energy storage inverter unit; the industrial gateway, the industrial Ethernet switch and the industrial control all-in-one machine are respectively connected to the weak current power supply unit.

[0013] The mobile multifunctional power supply system described in the present invention can be used in a variety of energy storage devices as required. For the convenience of application, the present invention also provides a mobile power supply device, including the mobile multifunctional power supply system described above.

[0014] The present invention is based on the above-mentioned mobile multifunctional power supply system and also provides a power supply control method, including: outputting current to a DC charging pile unit and / or an AC charging pile unit through a battery module unit in sequence through a high-voltage box unit and an energy storage converter unit, wherein the battery module unit is also used to send status information of the battery module unit to the high-voltage box unit and receive instructions sent by the high-voltage box unit; receiving status information of the battery module unit through the high-voltage box unit and sending it to an energy management system unit and the energy storage converter unit, receiving instructions sent by the energy management system unit, and sending instructions to the battery module unit; sending the energy storage converter unit to the energy management system unit through the energy storage converter unit. status information, receiving instructions sent by the energy management system unit, receiving information sent by the high-voltage box unit, and adjusting the current input to the DC charging pile unit and / or the AC charging pile unit; performing data processing on the received information through the energy management system unit, and sending instructions to the high-voltage box unit and to the energy storage inverter according to the data processing situation, and controlling the shutdown of the mobile multifunctional power supply system; supplying power to the battery module unit, the high-voltage box unit and the electrical components in the energy management system unit through the weak current power supply unit; and transmitting and charging the external electrical equipment with the current adjusted by the energy storage inverter unit through the DC charging pile unit and / or the AC charging pile unit.

[0015] Furthermore, in the power supply control method described in the present invention, when the energy storage converter unit is in the power-on state and the DC charging pile unit is connected to the energy storage converter unit, the energy storage converter unit performs DC inversion on the DC power input from the battery module unit to the energy storage converter unit, and the obtained three-phase AC power is input to the DC charging pile unit, and the DC charging pile unit then supplies power to the external power-consuming equipment; when the energy storage converter unit is in the power-on state and the AC charging pile unit is connected to the energy storage converter unit, the energy storage converter performs DC inversion on the DC power input from the battery module unit to the energy storage converter unit, and the obtained three-phase AC power is input to the AC charging pile unit, and the AC charging pile unit then supplies power to the external power-consuming equipment. Powering external electrical equipment; when the energy storage converter unit is in the on state, the energy storage converter unit is connected in parallel with the mains and the DC charging pile unit respectively, the energy storage converter unit performs DC inversion on the DC power input to the energy storage converter unit by the battery module unit, and the obtained three-phase AC power is simultaneously input into the mains power grid and the DC charging pile unit, and the DC charging pile unit is used to supply power to the external electrical equipment while realizing energy feedback to the grid where the mains is located; when the energy storage converter unit is in the on state, the energy storage converter unit is connected in parallel with the mains and the AC charging pile unit respectively, the energy storage converter unit performs DC inversion on the DC power input to the energy storage converter unit by the battery module unit, and the obtained three-phase AC power is simultaneously input into the mains power grid and the DC charging pile unit, and the DC charging pile unit is used to supply power to the external electrical equipment while realizing energy feedback to the grid where the mains is located; After the DC power of the element is DC-inverted, the obtained three-phase AC power is simultaneously input into the mains power grid and the AC charging pile unit, and the AC charging pile unit is used to supply power to external power equipment while realizing energy feedback to the power grid where the mains power is located; when the energy storage converter unit is in the on state, the DC charging pile unit and the AC charging pile unit are simultaneously and respectively connected in parallel with the energy storage converter unit, the energy storage converter performs DC-inversion on the DC power input into the energy storage converter by the battery module unit, and the obtained three-phase AC power is simultaneously input into the DC charging pile unit and the AC charging pile unit, and the DC charging pile unit and the AC charging pile unit then respectively supply power to external power equipment; when the energy storage converter unit is in the on state, the DC charging pile unit and the AC charging pile unit are simultaneously and respectively connected in parallel with the energy storage converter unit, and the energy storage converter performs DC-inversion on the DC power input into the energy storage converter by the battery module unit, and the obtained three-phase AC power is simultaneously input into the DC charging pile unit and the AC charging pile unit, and the DC charging pile unit and the AC charging pile unit then respectively supply power to external power equipment; when the When the energy storage converter unit is in the on state, and the energy storage converter unit is connected in parallel with the mains, the DC charging pile unit, and the AC charging pile unit, the energy storage converter unit performs DC inversion on the DC power input by the battery module unit to the energy storage converter unit, and the obtained three-phase AC power is simultaneously input into the mains power grid, the DC charging pile unit, and the AC charging pile unit, and the DC charging pile unit and the AC charging pile unit are used to respectively supply power to external power-consuming equipment, while energy feedback is provided to the power grid where the mains is located; when the energy storage converter unit is in the off state, the DC charging pile unit can be connected to the mains, and the DC charging pile unit can be used to supply power to external power-consuming equipment;The AC charging pile unit can be connected to the mains to supply power to external power equipment; when the energy storage converter unit is in the off state, the DC charging pile unit and the AC charging pile unit can be connected to the mains at the same time to supply power to external power equipment at the same time.

[0016] Furthermore, in the power supply control method described in the present invention, when it is necessary to perform DC charging for the battery module unit, the AC side of the energy storage inverter unit is in a disconnected state, and the battery module unit is charged via the DC charging interface without a low-voltage auxiliary power supply using a non-on-board charger through the high-voltage box unit; when it is necessary to perform AC charging for the battery module unit, the AC side of the energy storage inverter unit is in a connected state, and the three-phase AC power of the mains of the power grid is connected to the AC charging interface connected to the energy storage inverter unit, and the three-phase AC power from the mains of the power grid is rectified into DC power by the energy storage inverter unit to charge the battery module unit; when it is necessary to power more than three external electrical devices, When the energy storage converter unit is in the on state, the energy storage converter unit is connected in parallel with the multi-specification voltage and power output interface unit connected to the external power equipment, and / or the DC charging pile unit, and / or the AC charging pile unit respectively. After the energy storage converter unit performs DC inversion on the DC power input by the battery module unit to the energy storage converter unit, the obtained three-phase AC power is simultaneously input into the multi-specification voltage and power output interface unit, and / or the DC charging pile unit, and / or the AC charging pile unit, and the external power equipment is powered by the multi-specification voltage and power output interface unit, and / or the DC charging pile unit, and / or the AC charging pile unit respectively.

[0017] Compared with the prior art, the beneficial effects of the present invention are: providing an innovative power supply system, through the mobile application of the system, it is possible to realize quick charging of equipment such as pure electric vehicles and hybrid electric vehicles, and can also quickly power other electrical products such as outdoor audio and other electric tools and emergency rescue equipment, while meeting the power demand of multiple products of different specifications, and the power supply control method provided makes the power supply mode have multiple selectivity and can be adjusted according to needs, so that the relevant charging operations can be implemented with high mobility and flexibility, the system is stable and reliable, and the application is simple, which is conducive to the overall movement of the system according to the needs of different application scenarios and electrical equipment, and does not require construction land occupation, transformer expansion, cable laying and other construction. Compared with fixed charging piles, the cost investment is greatly reduced, and it is more suitable for field operations than other charging equipment, so as to solve the power supply difficulties of electric vehicles and other equipment in places where fixed charging piles are not installed or are not suitable for installation, thereby effectively alleviating the anxiety of relevant users, and also providing an effective supplement to the application of charging piles, making up for the market deficiencies, and solving some pain points of existing charging piles, which is suitable for promotion and application in the field of energy storage and power supply needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A structural block diagram of a mobile multifunctional power supply system in some embodiments of the present invention;

[0019] Figure 2 A schematic diagram of a partial circuit structure of a mobile multifunctional power supply system in some embodiments of the present invention (I);

[0020] Figure 3 A schematic diagram of a partial circuit structure of a mobile multifunctional power supply system in some embodiments of the present invention (II);

[0021] Figure 4 A schematic diagram of a partial circuit structure of a mobile multifunctional power supply system in some embodiments of the present invention (III);

[0022] Figure 5 A schematic diagram of the wiring pin structure distribution of the vehicle communication interface of the mobile multifunctional power supply system in some embodiments of the present invention;

[0023] Figure 6 A schematic diagram of the structure distribution of the DC charging interface wiring pins of the mobile multifunctional power supply system in some embodiments of the present invention;

[0024] Figure 7 for Figure 5 The vehicle communication interface wiring pins and Figure 6 The corresponding connection relationship and function table of the DC charging interface wiring pin part.

[0025] As shown in the figure:

[0026] PCS-energy storage converter unit; BMU-battery management unit; BCU-battery cluster control unit; SB1-PCS control switch; QF8-black start switch;

[0027] LA1-first indicator light, LA2-second indicator light, LA3-third indicator light;

[0028] QF1-first circuit breaker, QF2-second circuit breaker, QF3-third circuit breaker, QF4-fourth circuit breaker, QF5-fifth circuit breaker, QF6-sixth circuit breaker, QF7-seventh circuit breaker;

[0029] XS1-DC charging interface, XS2-AC charging interface;

[0030] K1-total positive relay, K2-total negative relay, K3-heating relay, K4-maintenance switch, R1-pre-charging resistor, HR1-current Hall sensor, FU1-first fuse, FU2-second fuse, FU3-third fuse. DETAILED DESCRIPTION

[0031] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but the protection scope of the present invention is not limited by the embodiments and is not limited thereto. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known structural components, components, circuits and methods of use are not described in detail.

[0032] Example 1

[0033] In some embodiments of the present invention, Figure 1 As shown, the mobile multifunctional power supply system of the present invention includes a DC charging pile unit, an AC charging pile unit, and also includes a battery module unit, a high-voltage box unit, an energy storage inverter unit (PCS for short), an energy management system unit (EMS for short) and a weak current power supply unit, wherein the battery module unit is connected to the high-voltage box unit; the high-voltage box unit is respectively connected to the energy management system unit, the energy storage inverter unit, and the weak current power supply unit; the energy storage inverter is respectively connected to the DC charging pile unit, the AC charging pile unit, the high-voltage box unit, and the energy management system unit; the energy management system unit is respectively connected to the high-voltage box unit, the energy storage inverter unit, and the weak current power supply unit; the weak current power supply unit is respectively connected to the battery module unit, the high-voltage box unit, and the energy management system unit.

[0034] In the above embodiment, under the control of the energy management system unit, the battery module unit is used to output current to the DC charging pile unit and / or AC charging pile unit in sequence through the high-voltage box unit and the energy storage inverter unit, and is used to send the status information of the battery module unit to the high-voltage box unit, and receive the instructions sent by the high-voltage box unit; the high-voltage box unit is used to receive the status information of the battery module unit and send it to the energy management system unit and the energy storage inverter unit, receive the instructions sent by the energy management system unit, and send instructions to the battery module unit; the energy storage inverter unit is used to send the status information of the energy storage inverter to the energy management system unit, and receive the instructions sent by the energy management system unit , receiving the information sent by the high-voltage box unit, adjusting the current input to the DC charging pile unit, and adjusting the current input to the AC charging pile unit; the energy management system unit is used to process the received information, and send instructions to the high-voltage box unit according to the data processing situation, and send instructions to the energy storage converter, and control the shutdown of the mobile multifunctional power supply system; the weak current power supply unit is used to supply power to the battery module unit, the high-voltage box unit and the electrical components in the energy management system unit; the DC charging pile unit is used to charge the external charging equipment with the current adjusted by the energy storage converter unit; the AC charging pile unit is used to charge the external charging equipment with the current adjusted by the energy storage converter unit. Therefore, the present invention can realize the mobile power supply away from the mains through the organic combination of each unit, which is conducive to making up for the shortcomings of fixed charging piles, alleviating the charging anxiety of users of electric vehicles and other electrical equipment far away from the mains or fixed charging piles, and effectively reducing the municipal burden, and the construction of charging piles with fixed land occupation greatly reduces the cost investment, and is convenient for field operations far away from urban areas.

[0035] In the above embodiments, the DC charging pile unit can select existing DC charging piles, DC charging guns and other auxiliary equipment; the AC charging pile unit can select existing AC charging piles, AC charging guns and other auxiliary equipment; the energy storage inverter unit can select existing energy storage inverters and related auxiliary connection components, wherein the high-voltage box unit is connected to the DC side of the energy storage inverter, and the DC charging pile unit and the AC charging pile unit are respectively connected to the AC side of the energy storage inverter; the battery module unit, the high-voltage box unit, the energy management system unit and the weak current power supply unit can all be selected from existing systems or components; therefore, the present invention is also suitable for large-scale promotion and application in various places.

[0036] When the present invention is applied specifically, it can be applied to a variety of electrical equipment according to needs, especially energy storage or power supply equipment. For the convenience of application, the present invention also provides a power supply equipment including the above-mentioned movable multifunctional power supply system. Through the application of the power supply equipment, it is possible to break away from the dependence of fixed charging equipment on municipal electricity, thereby achieving flexible movement according to the power consumption target, and then realizing the charging of the target power consumption equipment.

[0037] Specific application: When the present invention supplies power to the target electrical equipment, the control power supply method that can be used includes: outputting current to the DC charging pile unit and / or AC charging pile unit through the battery module unit in sequence through the high-voltage box unit and the energy storage inverter unit, and the battery module unit is also used to send the status information of the battery module unit to the high-voltage box unit, and receive the instructions sent by the high-voltage box unit; receiving the status information of the battery module unit through the high-voltage box unit and sending it to the energy management system unit and the energy storage inverter unit, receiving the instructions sent by the energy management system unit, and sending instructions to the battery module unit; sending the status information of the energy storage inverter to the energy management system unit through the energy storage inverter unit. state information, receive instructions sent by the energy management system unit, receive information sent by the high-voltage box unit, and adjust the current input to the DC charging pile unit and / or the AC charging pile unit; perform data processing on the received information through the energy management system unit, and send instructions to the high-voltage box unit and to the energy storage inverter according to the data processing situation, and control the shutdown of the mobile multifunctional power supply system; power the battery module unit, the high-voltage box unit and the electrical components in the energy management system unit through the weak current power supply unit; and transmit and charge the external electrical equipment with the current adjusted by the energy storage inverter unit through the DC charging pile unit and / or the AC charging pile unit.

[0038] In the above embodiment, when powering the target external power-consuming device, it is possible to select a DC charging pile unit or an AC charging pile unit for charging according to the charging setting of the target power-consuming device. In the power supply application process, when the DC charging pile unit is used to charge external power-consuming devices such as electric vehicles, the current entering the DC charging pile unit is the current adjusted by the energy storage converter unit, which is AC. After the AC enters the DC charging pile unit, it is converted into DC again in the DC charging pile unit and then output by the DC charging gun. Compared with the existing DC charging pile, the DC inverter current adjustment process is added, thereby providing a guarantee for the power supply device of the present invention to be able to move according to the location of the external power-consuming device that needs DC charging. After the power supply device of the present invention moves to the destination, the DC charging gun of the DC charging pile unit is plugged into the charging interface of the power-consuming device, such as the fast charging port of an electric vehicle, to output DC power, and fast charge the electric vehicle according to the communication protocol specified by the industry. When the AC charging pile unit is used to charge external electrical equipment such as electric vehicles, the current entering the AC charging pile unit is the current after inversion and adjustment by the energy storage converter unit. Compared with the existing AC charging piles, a current adjustment process of DC inversion is added, thereby providing a guarantee for the power supply equipment of the present invention to be able to move according to the location of the external electrical equipment that needs AC power charging. After the power supply equipment of the present invention moves to the destination, the AC charging gun of the AC charging pile unit is plugged into the charging interface of the electrical equipment, such as the slow charging port of an electric vehicle, to output single-phase AC power, and charge the electric vehicle in accordance with the communication protocol specified by the industry.

[0039] In the above embodiment, in order to ensure efficient control of the system and simple operation, preferably, Figure 2 As shown, the mobile multifunctional power supply system also includes a PCS control switch SB1, which is connected to the energy storage inverter unit; the PCS control switch is used to control the start and stop of the energy storage inverter unit. When the PCS control switch is in a closed state, the energy storage inverter unit is in a normal working state, including performing operations such as DC inversion on the current entering the DC charging pile unit and / or the AC charging pile unit; when the PCS control switch is disconnected, the energy storage inverter unit shuts down and disconnects the network connection with the energy management system unit after sending an alarm signal to the energy management system unit, and also stops performing operations such as DC inversion on the current entering the DC charging pile unit and / or the AC charging pile unit.

[0040] In the above embodiments, in order to ensure that the power supply equipment can supply power to external power-consuming equipment and adapt to different working conditions, preferably, the DC charging pile unit can be connected to the mains or the energy storage inverter unit; the AC charging pile unit can be connected to the mains or the energy storage inverter unit; the energy storage inverter unit can also be connected to the mains and the DC charging pile unit in parallel at the same time, and / or the energy storage inverter unit can be connected to the mains and the AC charging pile unit in parallel at the same time. In specific applications, multiple power supply modes can be provided for external power-consuming equipment, and the specific power supply control method can apply the corresponding power supply mode according to the power-on and power-off state conditions of the PCS combined with the working conditions of the power-consuming equipment. The specific power supply control method includes:

[0041] When the energy storage converter unit is in the on state and the DC charging pile unit is connected to the energy storage converter unit, the PCS performs DC inversion on the DC power input to the PCS by the battery module unit through the high-voltage box unit, and the obtained three-phase AC power is input to the DC charging pile unit, and the DC charging pile unit then supplies power to the external power-consuming equipment; when the energy storage converter unit is in the on state and the AC charging pile unit is connected to the energy storage converter unit, After the PCS performs DC inversion on the DC power input to the PCS by the high-voltage box unit, the obtained three-phase AC power is input to the AC charging pile unit, and the AC charging pile unit then supplies power to external electrical equipment; when the energy storage converter unit is in the on state, and the DC charging pile unit and the AC charging pile unit are simultaneously and respectively connected in parallel with the energy storage converter unit, after the PCS performs DC inversion on the DC power input to the PCS by the high-voltage box unit, the obtained three-phase AC power is simultaneously input to the DC charging pile unit and the AC charging pile unit, and the DC charging pile unit and the AC charging pile unit then respectively supply power to external electrical equipment; thereby, off-grid discharge is achieved while powering one or two electrical equipment. When the energy storage converter unit is in the shutdown state, it can be connected to the mains through the DC charging pile unit, and the DC charging pile unit supplies power to external electrical equipment; when the energy storage converter unit is in the shutdown state, it can be connected to the mains through the AC charging pile unit, and the AC charging pile unit supplies power to external electrical equipment; when the energy storage converter unit is in the shutdown state, the DC charging pile unit and the AC charging pile unit can be connected to the mains at the same time, and the DC charging pile unit and the AC charging pile unit can supply power to external electrical equipment at the same time; thereby, power supply to one or two electrical equipment is achieved while achieving grid-connected discharge away from PCS.

[0042] When the energy storage converter unit is in the on state, when the energy storage converter unit is connected in parallel with the mains and the DC charging pile unit at the same time, the PCS performs DC inversion on the DC power input to the PCS by the battery module unit through the high-voltage box unit, and the obtained three-phase AC power is simultaneously input into the mains power grid and the DC charging pile unit, so as to realize energy feedback to the grid where the mains is located while supplying power to external power-consuming equipment; when the energy storage converter unit is in the on state, when the energy storage converter unit is connected in parallel with the mains and the AC charging pile unit at the same time, the PCS performs DC inversion on the DC power input to the PCS by the battery module unit through the high-voltage box unit, and the obtained three-phase AC power is simultaneously input into the mains power grid and the AC charging pile unit. The charging pile unit can realize power supply to external power equipment and energy feedback to the power grid where the mains is located; when the energy storage converter unit is in the on state, the energy storage converter unit is connected in parallel with the mains, the DC charging pile unit, and the AC charging pile unit, and the PCS performs DC inversion on the DC power input to the PCS by the battery module unit through the high-voltage box unit. The obtained three-phase AC power is simultaneously input into the mains power grid, the DC charging pile unit, and the AC charging pile unit. Through the DC charging pile unit and the AC charging pile unit, power is supplied to external power equipment respectively and energy is fed back to the power grid where the mains is located; thereby, power supply to one or two power equipment can be realized while grid-connected discharge is realized. The above-mentioned application of multiple power supply modes such as off-grid or grid-connected to one or two power equipment facilitates power supply to power equipment of different specifications, and also provides different types of users with a variety of power supply control methods to choose from, which is conducive to fully eliminating power anxiety.

[0043] In the above embodiment, in order to enhance the effective regulation of power supply to external devices, preferably, three groups of circuit breakers are used to control the connectivity between the DC charging pile unit and the mains or the energy storage converter unit, three groups of circuit breakers are used to control the connectivity between the AC charging pile unit and the mains or the energy storage converter unit, three groups of circuit breakers are used to control the connectivity between the energy storage converter unit and the mains, the DC charging pile unit or the AC charging pile unit, and four groups of circuit breakers are used to control the connectivity between the energy storage converter unit and the mains, the DC charging pile unit and the AC charging pile unit, so as to facilitate power supply control according to working conditions. Preferably, as Figure 2As shown, the connectivity between the DC charging pile unit and the AC power or the energy storage converter unit is controlled by the first circuit breaker QF1, the second circuit breaker QF2 and the third circuit breaker QF3, wherein when the first circuit breaker QF1 is disconnected and the second circuit breaker QF2 and the third circuit breaker QF3 are closed, the DC charging pile unit is connected to the energy storage converter unit, and the above-mentioned off-grid discharge can be realized to supply power to an external electrical device; when the first circuit breaker QF1 and the third circuit breaker QF3 are both closed and the second circuit breaker QF2 is disconnected, the DC charging pile unit is connected to the AC power, and the above-mentioned grid-connected discharge away from the PCS can be realized to supply power to an external electrical device. Preferably, when the first circuit breaker QF1, the second circuit breaker QF2 and the third circuit breaker QF3 are all closed, the energy storage converter unit is connected to the mains and the DC charging pile unit simultaneously and separately in parallel, which can realize the above-mentioned grid-connected discharge operation mode of supplying power to an external power-consuming device while realizing energy feedback to the power grid where the mains is located. Preferably, as Figure 2 As shown, the connection state between the AC charging pile unit and the mains or the energy storage converter unit is controlled by the first circuit breaker QF1, the second circuit breaker QF2 and the fourth circuit breaker QF4, wherein when the first circuit breaker QF1 is disconnected and the second circuit breaker QF2 and the fourth circuit breaker QF4 are closed, the AC charging pile unit is connected to the energy storage converter unit, which can realize the above-mentioned off-grid discharge and supply power to an external power-consuming device; when the first circuit breaker QF1 and the fourth circuit breaker QF4 are both closed and the second circuit breaker QF2 is disconnected, the AC charging pile unit is connected to the mains, which can realize the above-mentioned grid-connected discharge separated from the PCS and supply power to an external power-consuming device; when the first circuit breaker QF1, the second circuit breaker QF2 and the fourth circuit breaker QF4 are all closed, the energy storage converter unit is simultaneously and separately connected in parallel with the mains and the AC charging pile unit, which can realize the above-mentioned grid-connected discharge operation mode of supplying power to an external power-consuming device while realizing energy feedback to the power grid where the mains is located. Preferably, if Figure 2As shown, When the first circuit breaker QF1 is disconnected and the second circuit breaker QF2, the third circuit breaker QF3 and the fourth circuit breaker QF4 are all closed, the DC charging pile unit and the AC charging pile unit are connected in parallel with the energy storage converter unit at the same time, so as to realize the above-mentioned off-grid discharge and supply power to two external electrical equipments at the same time; when the first circuit breaker QF1, the third circuit breaker QF3 and the fourth circuit breaker QF4 are all closed and the second circuit breaker QF2 is disconnected, the DC charging pile unit and the AC charging pile unit are connected with the mains respectively, so as to realize the above-mentioned grid-connected discharge away from the PCS and supply power to two external electrical equipments at the same time; when the first circuit breaker QF1, the second circuit breaker QF2, the third circuit breaker QF3 and the fourth circuit breaker QF4 are all closed, the energy storage converter unit is connected in parallel with the mains, the DC charging pile unit and the AC charging pile unit at the same time, so as to realize the above-mentioned grid-connected discharge operation mode of supplying power to two external electrical equipments and supplying energy to the power grid where the mains is located while supplying power to the two external electrical equipments.

[0044] Example 2

[0045] In some embodiments of the present invention, the basic structure is arranged in the same manner as in Embodiment 1. Specifically, in order to enhance the stability of power supply, the battery module unit includes more than two groups of battery modules, such as Figure 4 As shown, taking a battery module unit composed of two groups of battery modules, namely, battery module A and battery module B, as an example, each group of the battery modules is provided with a battery pack and a battery management unit (BMU) respectively connected to the battery pack; the battery modules are connected in series; the high-voltage box unit includes a battery cluster control unit (BCU); the battery management unit provided in each group of the battery modules is connected to the battery cluster control unit; the battery cluster control unit is respectively connected to the energy management system unit and the energy storage inverter unit.

[0046] In the above embodiment, in order to ensure the stable operation of the battery module unit, preferably, Figure 4 As shown, each group of the battery modules is also provided with a fuse, a heating device, and a cooling device. In specific applications, the fuse is used to protect the battery pack from overcurrent; the heating device and the cooling device are used to ensure the stable working temperature of the battery module.

[0047] In the above embodiment, the battery pack is used to output direct current, and the battery pack is composed of lithium batteries and / or storage batteries or other batteries with good energy storage and charging and discharging effects, preferably a lithium battery pack. The battery management unit BMU is used to collect the voltage and temperature status information of each battery cell in the battery module, perform voltage balancing, and send the collected status information of each battery cell to the BCU via the CAN bus. The battery cluster control unit BCU is used to receive the information sent by the BMU and send the status information of the battery module unit to the EMS and PCS, and perform insulation detection on the battery module unit, and is used to send the insulation detection information of the battery module to the EMS, receive instructions sent by the EMS, and send instructions to the heating device or the cooling device. The battery cluster control unit and the energy management system unit perform two-way communication via the CAN communication bus.

[0048] In the specific application process, the energy management system unit processes the received information about the battery module and sends instructions to the BCU according to the data processing situation, wherein the BCU sends the received control temperature instruction about the battery module unit to the heating device or the cooling device, controls the working temperature of the battery module, controls the heating device to heat the battery module when the temperature is less than or equal to the set minimum working temperature limit, and controls the battery module when the temperature is greater than or equal to the set maximum working temperature limit to cool, thereby ensuring the power supply to the external power-consuming equipment while providing the stability of the power supply to the battery module unit within the system. The BCU sends the status information of the battery module unit such as the battery working status, fault status, etc. to the PCS, and the PCS performs charge and discharge control according to the received information, wherein when the fault information of the battery module unit is received, the PCS sends an alarm signal to the EMS and stops working, that is, the PCS stops performing operations such as DC inversion on the current entering the DC charging pile unit and / or the AC charging pile unit, and after receiving the alarm signal, the EMS sends the charge and discharge control instruction of the battery module unit to the BCU; thereby, the control of the shutdown of the mobile multifunctional power supply system is realized.

[0049] In the above embodiment, preferably, Figure 4As shown, the high-voltage box unit also includes a total positive relay, a total negative relay, and a heating relay, and the total positive relay, the total negative relay, and the heating relay are respectively connected to the battery cluster control unit; the heating relay is connected in series with the heating device set in each of the battery modules. In specific applications, the BCU sends the heating instruction about the battery module unit received from the EMS to the heating relay, and after the heating relay is turned on, it is sent to the heating device to start the control of the working temperature of the battery module. In addition, in specific applications, the BCU sends the charge and discharge control instruction about the battery module unit received from the EMS to the total positive relay and the total negative relay, wherein, when the battery module unit needs to be charged, the total positive relay and the total negative relay are turned on; when the battery module unit needs to be discharged to the outside, the total positive relay and the total negative relay are turned on; when it is necessary to stop charging or discharging, the total positive relay and the total negative relay are disconnected; thereby, the charge and discharge control of the battery module unit is realized.

[0050] In the above embodiment, preferably, the heating device is installed inside the shell of the battery module and is arranged near the bottom of the shell, that is, the heating device inside each group of battery modules is installed inside the corresponding battery module shell, and the heating device is preferably a polyimide film (i.e., PI heating film). In specific applications, BMU will collect and monitor the temperature information of the battery cell in real time and send it to BCU. When the temperature is less than or equal to the set minimum operating temperature limit, BCU outputs instructions to the heating relay, the heating relay is turned on, the heating device in the corresponding battery module is turned on, and heating begins; when the temperature reaches the set operating temperature range, BCU outputs instructions to the heating relay, the heating relay K3 is disconnected, the heating device in the corresponding battery module is disconnected, and heating ends. In this way, the efficient and stable operation of the battery module is enhanced.

[0051] In the above embodiment, preferably, a cooling unit interface terminal is provided on the shell of each group of the battery modules, and the cooling unit interface terminal is connected to the cooling device, and the cooling unit interface terminal is connected to the BCU, that is, the cooling device in each group of battery modules is connected to the BCU through the cooling unit interface terminal on its shell. In specific application, the BMU sends the monitored battery cell temperature information to the BCU in real time. When the battery module temperature is greater than or equal to the set maximum operating temperature limit, the BCU outputs a cooling start instruction to the cooling device in the corresponding battery module, and the cooling device in the corresponding battery module is turned on to start cooling; when the temperature reaches the set operating temperature range such as 25°C, the BCU outputs a cooling end instruction to the cooling device in the corresponding battery module, and the cooling device in the corresponding battery module is disconnected to end cooling. In this way, the working stability and service life of the battery module are further guaranteed.

[0052] Example 3

[0053] In some embodiments of the present invention, the basic structure is arranged in the same manner as in Embodiment 1 and / or Embodiment 2. Specifically, in order to enhance the operational stability of the mobile multifunctional power supply system of the present invention, as Figure 2 As shown, the energy management system unit includes an industrial gateway, an industrial Ethernet switch, and an industrial control all-in-one machine which are connected in sequence; the industrial gateway is connected to the high-voltage box unit; the industrial Ethernet switch is connected to the energy storage inverter unit; the industrial gateway, the industrial Ethernet switch, and the industrial control all-in-one machine are respectively connected to the weak current power supply unit.

[0054] In the above embodiment, the industrial gateway is used to realize the conversion between CAN communication and Ethernet (English name is Ethernet) network communication; the industrial Ethernet switch is used to realize multi-channel network connection and information exchange through Ethernet; the industrial control integrated machine is used to realize human-computer interaction, data processing, control instruction sending, and realize two-way communication with PCS and BCU. Therefore, through the simple combination of industrial gateway, industrial Ethernet switch and industrial control integrated machine, the overall energy scheduling management of the system is realized. Specifically, through the two-way communication between the energy management system unit and BCU and PCS, that is, receiving the information sent by BCU and PCS, and performing data processing on the received information, and sending instructions to BCU and PCS according to the data processing situation, the charging and discharging control of the mobile multifunctional power supply system of the present invention is realized, and the real-time data display, historical data query and abnormal information display can be realized with the human-computer interaction interface, and the voltage and temperature of each single cell of the battery module and the input and output information of the PCS can be fully displayed.

[0055] In the above embodiment, the EMS performs two-way network communication with the BCU in the high-voltage box unit through the CAN communication bus via the industrial gateway. The status information of the battery module unit received by the BCU includes voltage and temperature status signals, etc., which are transmitted to the industrial control integrated machine through the industrial gateway and the industrial Ethernet switch through Ethernet; the EMS performs two-way network communication with the energy storage inverter unit through the industrial Ethernet switch, receives the voltage, current, power of the three-phase AC power output by the PCS AC side, and the temperature, accident status, abnormal status, and switch status of the PCS itself through Ethernet, and transmits them to the industrial control integrated machine through Ethernet; in the industrial control integrated machine of the EMS, the received information is processed, and according to the data processing situation, the instructions for the battery module are sent to the BCU through Ethernet via the industrial Ethernet switch, the industrial gateway and the CAN communication bus; the instructions for the PCS are sent to the PCS through the industrial Ethernet switch through Ethernet; thereby realizing the control of the charging and discharging status of the battery module of the energy storage element.

[0056] In the above embodiment, in order to ensure data processing and monitoring by EMS, a database module is provided in the industrial control integrated machine of EMS, and a data storage module is provided in the database module, and the data storage module preferably includes a real-time database and a historical database; wherein, the real-time database is used to store real-time data collected by the system, and its data is continuously updated according to the real-time changes in the operating conditions, and records the current status of the monitored PCS, BCU and other equipment units; the historical database is used for long-term preservation of important data.

[0057] In the above embodiment, in order to ensure the efficient monitoring of the system by the EMS, preferably, an accident alarm unit and a pre-alarm unit are provided in the industrial control integrated machine of the EMS, wherein the accident alarm unit is used to send out an alarm signal for overvoltage and overtemperature caused by abnormal operation; the pre-alarm unit is used to send out an alarm signal for abnormal status information, or voltage exceeding the limit, current exceeding the limit, temperature exceeding the limit, etc. Preferably, a PCS fault alarm information status table and a fault alarm information record are provided in the industrial control integrated machine of the EMS, wherein the PCS fault alarm information status table is used to display the fault alarm status of the PCS such as CAN communication failure, grid voltage reversal, grid voltage imbalance, bus over-voltage and under-voltage, fan failure, inverter overload, etc.; the fault alarm information record is used to record the fault alarm information of the PCS and BCU, including the date, time, type, level, value, etc. of the failure.

[0058] In the above embodiment, in order to ensure the efficient monitoring of the system by EMS, a monitoring display screen is provided on the industrial control integrated machine of EMS. The monitoring interface of the monitoring display screen can monitor the overall operation of the power supply equipment and the operation of each unit in its power supply system in real time. A switch key that can directly control the start and stop operation of the power supply equipment is provided on the monitoring interface. Preferably, in the industrial control integrated machine of EMS, a display unit is provided on the monitoring interface, and the display unit includes a communication indicator light, and the communication indicator light is used to display whether the communication is normal or not. The communication indicator light has multiple groups, and each group of communication is separately indicated by a group of communication indicator lights. The communication groups are respectively the communication between BMU and BCU, the communication between BCU and EMS, the communication between BCU and PCS, and the communication between PCS and EMS. When the communication indicator lights of each group are all green, it indicates that each communication is normal. The display unit also includes a mains AC access indicator key and a DC access indicator key. The mains AC access indicator key is used to indicate the 380V mains access to PCS and the disconnection state with PCS; the DC access indicator key is used to indicate the DC access to the battery module unit and the disconnection state with the battery module unit. The display unit also includes an "off-grid mode" button and a "grid-connected mode" button. When off-grid charging or discharging is performed, click the "off-grid mode" button and the system enters the off-grid mode; when grid-connected charging or discharging is performed, click the "grid-connected mode" button and the system enters the grid-connected mode. The display unit also includes a PCS fault status indicator and a "clear fault" button. When a PCS fault occurs, the fault status indicator turns "red"; when the fault is handled, press the "clear fault" button and the fault status indicator turns "green". The display unit also includes a real-time charging and discharging status curve. Through the real-time charging and discharging status curve, real-time data information such as the total system voltage, total current, PCS line voltage, PCS phase current, etc. can be observed, so that users can understand the thresholds of charging and discharging and their operating trends, and other information, and it is also convenient to control charging and discharging according to working conditions. Therefore, through different display settings of the monitoring interface, it is convenient for operators to monitor the operating status of the power supply system.

[0059] In the above embodiments, in order to ensure efficient and stable charging and discharging operations, the EMS monitors the system stably. Preferably, during the charging of the battery module unit or the external discharge of the power supply system to charge external electrical equipment, the user can manually press the "Stop" button on the monitoring interface of the EMS main control integrated machine to stop charging or discharging; preferably, during the charging or discharging process, if the EMS receives fault information sent by the BCU or PCS, the fault information is processed in the industrial control integrated machine, and a corresponding end-of-charging or discharging instruction is made according to the severity level of the fault information. Then, the PCS receives and executes the stop work instruction, and / or the BCU receives the instruction and sends a disconnection instruction to the total positive relay and the total negative relay according to the instruction, and the contacts of the total positive relay and the total negative relay are disconnected, thereby forcing the charging or discharging to stop, so that the charging and discharging of the power supply system is efficiently controlled.

[0060] In the above embodiment, in order to ensure efficient and stable operation of the power supply system and stable monitoring of the system by the EMS, preferably, after the industrial control integrated machine of the EMS is started, the system self-check is automatically performed. After the self-check passes, charging and discharging operations such as "grid-connected mode" or "off-grid mode" are performed according to user needs.

[0061] In the above embodiment, in order to facilitate users to monitor the charging status of their electrical equipment, preferably, the mobile multifunctional power supply system also includes 3G, and / or 4G, and / or 5G Internet of Things network communication equipment, and the Internet of Things network communication equipment is arranged in the DC charging pile unit and / or the AC charging pile unit. The charging data and electricity fee information generated by the DC charging pile unit or the AC charging pile unit will be transmitted to the charging Internet of Things cloud platform through the Internet of Things network communication equipment, and charging users such as electric vehicles can query information such as the charged amount, charging time, and actual payment amount through the mobile phone APP.

[0062] Example 4

[0063] In some embodiments of the present invention, the basic structure is set the same as that of Embodiment 1, and / or Embodiment 2, and / or Embodiment 3. Specifically, to ensure the stable operation of the power supply system, Figure 2 As shown, the weak current power supply unit includes a black start switch QF8, an isolating switch power supply and a power supply module connected to each other. The black start switch QF8 is connected to the high voltage box unit, and the power supply module is connected to the energy management system unit.

[0064] In the above embodiment, the specifications of the isolating switch power supply and the power module can be selected according to the specific working conditions. Preferably, the isolating switch power supply is a DC24V power supply (i.e., a DC 24V power supply), and the power module is a DC12V power supply (i.e., a DC 12V power supply). In specific applications, the black start switch QF8 is turned on, and the isolating switch power supply uses a 24V voltage power supply to power the power module, each BMU in the battery module unit, the BCU in the high-voltage box unit, the industrial gateway and the industrial Ethernet switch in the EMS; the power module powers the industrial control integrated machine in the EMS and provides a DC 12V working power supply; thereby ensuring the stable operation of the power supply system.

[0065] In the above embodiment, the weak current power supply unit has better energy management controllability, i.e., EMC performance, compared with the conventional switching power supply through the combination setting of the isolation switching power supply and the power supply module. Accordingly, it has extremely wide voltage input high isolation voltage characteristics, low ripple noise, and is more convenient for input undervoltage protection, reverse connection protection, output overcurrent, overvoltage, and short circuit protection. Its DC input voltage range is preferably 200-1000VDC.

[0066] Example 5

[0067] In some embodiments of the present invention, the basic structure is set the same as that of embodiment 1, and / or embodiment 2, and / or embodiment 3, and / or embodiment 4. Specifically, in order to ensure the stable operation of the power supply system, the battery module unit needs to be charged in time, such as Figure 2 As shown, the mobile multifunctional power supply system of the present invention also includes a DC charging interface XS1 and an AC charging interface XS2, wherein the DC charging interface is connected to the high-voltage box unit, and the AC charging interface is connected to the energy storage inverter unit; wherein the DC charging interface does not include a low-voltage auxiliary power supply.

[0068] In the above embodiment, the AC charging interface XS2 is used to perform AC charging on the battery module unit; the DC charging interface XS1 is used to perform DC fast charging on the battery module unit. Compared with the existing DC charging pile interface, the DC charging interface XS1 of the present invention does not include a low-voltage auxiliary power supply, that is, no low-voltage auxiliary voltages A+ and A- are provided. Thus, DC fast charging is achieved with a simplified DC charging interface circuit setting.

[0069] When specifically applied to power supply equipment, in the process of charging control of the power supply equipment, when it is necessary to perform DC charging for the battery module unit, that is, off-grid charging, the AC side of the energy storage inverter unit is disconnected, such as by disconnecting the second circuit breaker QF2, so that the AC side of the PCS is disconnected, and the PCS is kept completely non-intervening, that is, the PCS is completely disengaged, and then, a charger such as a non-on-board charger is used to connect the DC charging interface XS1, and the battery module unit is directly charged through the high-voltage box unit, thereby realizing DC fast charging of each battery pack in the battery module unit.

[0070] When specifically applied to power supply equipment, in the process of charging control of the power supply equipment, when it is necessary to perform AC charging for the battery module unit, that is, grid-connected charging, the AC side of the energy storage inverter unit is connected, such as by closing the second circuit breaker QF2, so that the AC side of the PCS is connected, and the three-phase AC power of the mains power grid (or other equipment that can provide equivalent AC power) is connected to the AC charging interface XS2, and the three-phase AC power from the mains power grid begins to rectify the AC power into DC power through the PCS to charge the battery module unit, thereby realizing AC charging of each battery pack in the battery module unit.

[0071] In the above embodiment, during the DC charging process of the power supply system and the power supply equipment used therein, in order to ensure that the entire DC charging process is safely and efficiently controlled, preferably, the BCU and the off-board charger are connected via CAN bidirectional communication; in specific applications, under the monitoring of the EMS, the BCU transmits the voltage and power information of the battery module unit to the off-board charger, and the off-board charger transmits the charging voltage, power and other information to the BCU, and the BCU transmits the CAN communication information between it and the off-board charger to the industrial control integrated machine of the EMS in real time, and the BCU transmits the received status information of the battery module unit to the industrial control integrated machine; in the industrial control integrated machine of the EMS, the received information is processed, and according to the data processing situation, the charging control instructions for the relevant battery module unit are sent to the BCU, and the BCU sends the received charging and discharging control instructions for the battery module unit to the off-board charger or the total positive relay and the total negative relay, thereby realizing effective control of each stage of the overall charging process from the beginning to the end. Preferably, the DC charging control method includes:

[0072] S1: In the communication mutual configuration stage between the BCU and the off-board charger, the off-board charger sends its maximum output capacity message to the BCU, and the BCU sends the received maximum output capacity and minimum output capacity information of the charger to the industrial control integrated computer, and the industrial control integrated computer performs data judgment to determine whether the charger can be used for charging;

[0073] S2: If the voltage of each battery pack in the battery module unit received by the BCU is normal, and the battery voltage value obtained by the BCU is within the range of the maximum voltage and the minimum voltage that the off-board charger can output, the battery module unit enters the ready-to-charge state;

[0074] S3: After entering the charging state, the industrial control integrated computer determines the demand of the battery module unit based on the data, and sends a charging demand instruction to the BCU based on the demand. The BCU sends a message to the off-board charger to set the battery charging demand. The off-board charger will adjust the charging voltage, current and other requirements in real time according to the message parameters to ensure the normal charging process. At the same time, under the monitoring of the EMS, the off-board charger will continue to send charging status information such as charging voltage and current to the BCU in real time. The BCU continues to send the current battery module unit battery power, equipment temperature and other information to the industrial control integrated computer of the EMS in real time, and sends the charging demand instruction of the industrial control integrated computer to the off-board charger in real time.

[0075] S4: If the EMS receives information that the battery has reached a full state or receives a message for terminating charging from the off-board charger transmitted by the BCU, it sends a charge termination instruction to the BCU. The BCU sends a charge termination or stop charging message to the off-board charger according to the charge termination instruction, and the off-board charger terminates charging. Preferably, at the same time, the BCU sends a disconnection instruction to the total positive relay and the total negative relay according to the charge termination instruction, and the total positive relay and the total negative relay are disconnected, thereby terminating charging.

[0076] S5: Except for the case of step S4, during the charging process, the user can manually press the "Stop" button on the monitoring interface of the EMS main control integrated machine to stop charging; if the EMS receives fault information from the BCU, the fault information data is processed in the industrial control integrated machine of the EMS, and a corresponding charging end instruction is made according to the severity level of the fault information. The BCU will send a message to the off-board charger to terminate or stop charging according to the charging end instruction, and the off-board charger will terminate charging; at the same time, the BCU sends a disconnection instruction to the total positive relay and the total negative relay according to the charging end instruction, and the contacts of the total positive relay and the total negative relay are disconnected, thereby forcing charging to stop.

[0077] In the above embodiment, during the AC charging of the power supply system and the power supply equipment used therein, in order to ensure that the entire AC charging process is safely and efficiently controlled, preferably, based on the real-time communication between the PCS and the BCU and the ECS, the changes in the battery voltage and current in the battery module unit, as well as the line voltage and phase current and total power on the AC side of the PCS can be observed in real time on the monitoring interface of the industrial control all-in-one machine; preferably, during the charging process, the user can manually press the "stop" button on the monitoring interface of the main control all-in-one machine of the EMS to stop charging. During this process, the EMS sends an instruction to the PCS, and the PCS stops rectifying and charging stops; preferably, during the charging process, if the EMS receives fault information sent by the BCU or PCS, the fault information is processed in the industrial control all-in-one machine, and a corresponding end charging instruction is made according to the severity level of the fault information. Then, the PCS receives and executes the stop work instruction, or the BCU receives the instruction and sends a disconnection instruction to the total positive relay and the total negative relay according to the instruction, and the contacts of the total positive relay and the total negative relay are disconnected, thereby forcing charging to stop.

[0078] Example 6

[0079] In some embodiments of the present invention, the basic structure is arranged the same as that of Embodiment 1, and / or Embodiment 2, and / or Embodiment 3, and / or Embodiment 4, and / or Embodiment 5. Specifically, in order to improve the utilization rate of the power supply system and equipment, Figure 3 As shown, the mobile multifunctional power supply system of the present invention also includes a multi-specification voltage and power output interface unit, and the multi-specification voltage and power output interface unit includes more than two groups of output interfaces, and each of the output interfaces is connected to the energy storage inverter unit.

[0080] When specifically applied to power supply equipment, in the power supply control process, when it is necessary to power more than three external power-consuming devices, each external power-consuming device is connected through a multi-specification voltage and power output interface unit, and / or the DC charging pile unit, and / or the AC charging pile unit. When the energy storage converter unit is in the on state, the energy storage converter unit is connected in parallel with the multi-specification voltage and power output interface unit connected to the external power-consuming device, and / or the DC charging pile unit, and / or the AC charging pile unit. After the energy storage converter unit performs DC inversion on the DC power input by the battery module unit to the energy storage converter unit, the obtained three-phase AC power is simultaneously input into the multi-specification voltage and power output interface unit, and / or the DC charging pile unit, and / or the AC charging pile unit. The charging pile unit and / or the AC charging pile unit respectively supply power to the external power users, thereby enabling the simultaneous power supply of more than three external power users through the two or more groups of output interfaces of the multi-specification voltage and power output interface unit, or the simultaneous power supply of more than three external power users through the two or more groups of output interfaces of the multi-specification voltage and power output interface unit and the DC charging pile unit, or the simultaneous power supply of more than three external power users through the two or more groups of output interfaces of the multi-specification voltage and power output interface unit and the AC charging pile unit, or the simultaneous power supply of more than four external power users through the two or more groups of output interfaces of the multi-specification voltage and power output interface unit and the DC charging pile unit and the AC charging pile unit.

[0081] In the above embodiment, in the multi-specification voltage and power output interface unit, each of the output interfaces can output different powers; the multi-specification voltage and power output interface unit preferably includes an AC 380V output interface, i.e., a three-phase AC output interface, an AC 220V output interface, i.e., a single-phase AC output interface, and a DC 5V output interface; preferably, the AC 380V output interface can output currents of 16A and 25A, and the AC 220V output interface can output currents of 10A and 16A; preferably, the DC 5V output interface is a USB interface. Therefore, compared with the existing conventional single voltage or single current output interface, the setting of the multi-specification voltage and power output interface unit and the output of multiple voltages and currents are conducive to meeting the needs of people's daily electrical equipment, meeting the charging of pure electric vehicles and hybrid electric vehicles, and can also conveniently power other electrical equipment such as mobile phones, outdoor audio, emergency rescue equipment, etc. Compared with the substantial increase in fixed charging pile service products, it can also greatly improve the utilization rate of power supply system equipment, and correspondingly help save space and other resources.

[0082] In the above embodiment, preferably, each of the output interfaces is connected to the energy storage inverter unit through a circuit breaker. Preferably, the AC 380V output interface is connected through the fifth circuit breaker QF5 to control the connectivity, the AC 220V output interface capable of outputting 16A current is connected through the sixth circuit breaker QF6 to control the connectivity, and the AC 220V output interface capable of outputting 10A current is connected through the sixth circuit breaker QF7 to control the connectivity, so that users can conveniently start different output interfaces according to different needs to meet their power needs. Preferably, the inlet terminals of the fifth circuit breaker QF5 of the three-phase circuit breaker, the sixth circuit breaker QF6 of the single-phase circuit breaker, and the seventh circuit breaker QF7 of the single-phase circuit breaker are connected to the outlet terminals of the first circuit breaker QF1 and the inlet terminals of the second circuit breaker QF2 through wires; the outlet terminals of the fifth circuit breaker QF5 of the three-phase circuit breaker are connected to the 25A three-phase interface and the 16A three-phase interface through wires; when needed, the second circuit breaker QF2 and the fifth circuit breaker QF5 are connected, and the DC power output by the battery module is inverted into AC power through the PCS and sent to the 25A three-phase interface and the 16A three-phase interface; the outlet terminals of the sixth circuit breaker QF6 of the single-phase circuit breaker are connected to two 16A single-phase interfaces through wires; when needed, the second circuit breaker QF2 and the sixth circuit breaker QF6 are connected, and the DC power output by the battery module is inverted into AC power through the PCS and sent to the To the two 16A single-phase interfaces, preferably, the two 16A single-phase interfaces are each provided with a USB interface, which can output a voltage and current of 5V and 2A; the outlet terminal of the single-phase circuit breaker seventh circuit breaker QF7 is connected to the two 10A single-phase interfaces through a wire, and the second circuit breaker QF2 and the seventh circuit breaker QF7 are connected, and the DC power output by the battery module is converted into AC power through the PCS inverter and transmitted to the two 10A single-phase interfaces, preferably, the two 10A single-phase interfaces are each provided with a USB interface, which can output a voltage and current of 5V and 2A; in specific applications, it can be selected according to the working conditions. Thus, more optional charging application interfaces are provided to users, which increases convenience while effectively saving the cumbersome operations and resource costs required to configure other existing power supply equipment.

[0083] In the above embodiment, in order to more accurately monitor the external power supply information of the mobile multifunctional power supply device, preferably, an IoT network communication device is separately set at each output interface of the DC charging pile unit, the AC charging pile unit and the multi-specification voltage power output interface unit. In specific applications, the charging data and electricity fee information generated after each external load is connected will be transmitted to the charging IoT cloud platform or other relevant real-time statistics equipment of electricity consumption information through the IoT network communication device, and the charging user corresponding to the relevant external load can query the information such as the charged amount, charging time, and actual payment amount through the mobile phone APP.

[0084] Example 7

[0085] In some embodiments of the present invention, the basic structure is arranged the same as that of Embodiment 1, and / or Embodiment 2, and / or Embodiment 3, and / or Embodiment 4, and / or Embodiment 5, and / or Embodiment 6. Specifically, in order to enhance the stability and reliability of the system operation, the mobile multifunctional power supply system of the present invention further includes an indicator light unit, such as Figure 2 or Figure 3 As shown, the indicator light unit has three groups of indicator lights, which are respectively a first indicator light LA1, a second indicator light LA2 and a third indicator light LA3; wherein, the first indicator light LA1 is connected to the AC power of the mobile multifunctional power supply system of the present invention; the second indicator light LA2 is connected to the second circuit breaker QF2; the third indicator light LA3 is respectively connected to the first circuit breaker QF1, the second circuit breaker QF2, and the circuit breaker for controlling the access of external loads, wherein the circuit breakers for controlling the access of external loads are such as the third circuit breaker QF3, the fourth circuit breaker QF4, the fifth circuit breaker QF5, the sixth circuit breaker QF6, and the seventh circuit breaker QF7.

[0086] In the above embodiment, the first indicator light is used to indicate that the mains is connected, the second indicator light is used to indicate that the energy storage converter unit is connected, and the third indicator light is used to indicate that the external load connection can be started. In specific application, the first indicator light LA1 lights up, indicating that the three-phase AC power of the power grid is connected to the power supply system; the second circuit breaker QF2 is closed and connected, and the second indicator light LA2 lights up, indicating that the side of the PCS connected to the AC power has been connected to the power supply system; the first circuit breaker QF1 and / or the second circuit breaker QF2 is closed and connected, and the third indicator light LA3 lights up, indicating that external loads such as electric vehicles and other electrical equipment can be connected. Specifically, according to the charging demand of the connected external load, the circuit breaker for controlling the access of the external load is connected, such as closing the circuit breaker (QF5, and / or QF6, and / or QF7) connecting the corresponding output interface, and / or closing the circuit breaker (QF3) connecting the DC charging pile unit, and / or closing the circuit breaker (QF4) connecting the AC charging pile unit; therefore, compared with the existing indicator light that indicates that the load has been connected, the above setting indicates that the load can be connected in advance, so that the operator can effectively avoid system operation failures caused by load connection failures, and there is no need to set multiple indicator lights due to the connection of multiple external loads, thereby effectively saving circuit costs.

[0087] Example 8

[0088] In some embodiments of the present invention, the basic structure is set up the same as in embodiments 1 to 7. Specifically, in order to enhance the stable operation of the system, Figure 2-4As shown, the high-voltage box unit includes a battery cluster control unit, a total positive relay K1, a total negative relay K2, a heating relay K3, a pre-charging resistor R1, a current Hall sensor HR1, a maintenance switch K4, and a third fuse FU3; wherein the total positive relay K1 is respectively connected to the maintenance switch K4, the pre-charging resistor R1, and the BCU; the current Hall sensor HR1 is connected to the BCU; the total negative relay K2 is connected to the BCU; the heating relay K3 is respectively connected to the third fuse FU3 and the BCU.

[0089] In the above embodiment, in order to enhance the protection of the system, preferably, Figure 4 As shown, the total positive terminal of the battery module unit (i.e. Figure 4 The total positive terminal of the battery shown in the figure is connected to the total positive inlet terminal of the high-voltage box unit, and the total negative terminal of the battery module unit (i.e. Figure 4The total negative of the battery shown in the figure is connected to the total negative incoming line terminal of the high-voltage box unit; the total positive incoming line terminal of the high-voltage box unit is connected to one end of the total positive copper bar, and the other end of the total positive copper bar is respectively connected to one end of the maintenance switch K4 and the incoming line terminal of the black start switch QF8; the other end of the maintenance switch K4 is respectively connected to one foot of the main contact of the total positive relay K1 and one end of the pre-charging resistor R1, and the other foot of the main contact of the total positive relay K1 and the other end of the pre-charging resistor R1 are both connected to the total positive outgoing line terminal of the high-voltage box unit. Therefore, the pre-charging resistor R1 serves as a shunt branch when the main contact of the total positive relay K1 is connected, which can prevent the main contact from sticking due to the instantaneous large current. The two ends of the pre-charging resistor R1 and the two feet of the main contact of the total positive relay K1 are respectively connected to the wiring terminals J1-1 and J1-5 of the BCU. The two ends of the coil of the total positive relay K1 are respectively connected to the wiring terminals J2-32 and J3-9 of the BCU. The current Hall sensor HR1 is used to collect the total current output by each battery of the battery module unit and send it to the BCU for use in power calculation, overcurrent protection, etc. The current Hall sensor HR1 is mounted on the main positive copper bar from the maintenance switch K4 to one end of the main contact of the total positive relay K1. The Hall H signal end and the Hall L signal end of the current Hall sensor HR1 are connected to the BCU terminal J2-24 and J2-7 respectively, and the power supply pins 5V and GND of the current Hall sensor HR1 are connected to the BCU terminal J2-8 and J2-25 respectively. The total negative incoming line of the high-voltage box unit is connected to one end of the total negative copper bar, and the other end of the total negative copper bar is connected to one foot of the main contact of the total negative relay K2, the incoming line end of the black start switch QF8, J1-3 / J1-7 of the BCU, and the heating negative end J3-6 (for the wire to be connected to the negative pole of the battery module heating control terminal). The other foot of the main contact of the total negative relay K2 is connected to the total negative outgoing line of the high-voltage box unit. The two ends of the coil of the total negative relay K2 are connected to the BCU terminals J2-32 and J3-18 respectively. One leg of the main contact of the heating relay K3 is connected to the total positive output terminal of the high-voltage box unit and the BCU terminal J1-5 respectively, and the other leg of the main contact of the heating relay K3 is connected to one end of the third fuse FU3, and the other end of the third fuse FU3 is connected to the heating positive terminal J2-32. The third fuse FU3 is used to protect the heating relay K3. The two ends of the coil of the heating relay K3 are connected to the BCU terminals J2-32 and J3-6 respectively.

[0090] In the above embodiment, in order to facilitate the regulation and transfer of the power supply system, preferably, Figure 4As shown, the battery module unit includes two groups of battery modules connected in series, and the two groups of battery modules are respectively battery module A and battery module B. Preferably, the positive electrode of the battery group inside battery module A is connected to one end of the first fuse FU1, and the other end of the first fuse FU1 is connected to the total positive incoming line terminal of the high-voltage box unit; the negative electrode of the battery group inside battery module A is connected to one end of the second fuse FU2 inside battery module B, and the other end of the second fuse FU2 is connected to the positive electrode of the battery group inside battery module B, and the negative electrode of the battery group inside battery module B is connected to the total negative incoming line terminal of the high-voltage box unit. The CAN communication and 24V power supply terminals of battery module A, and the CAN communication and 24V power supply terminals of battery module B are respectively connected in parallel and connected to the BCU; specifically, the CAN communication and DC24V power supply interface terminals of battery module A and battery module B are connected in parallel to form five wires CANH, CANL, SG, 24V+, and 24V-, which are respectively connected to the BCU terminal blocks J2-27, J2-11, the shell ground, J2-1, and J2-17; thus, the parallel-connected CAN is used for communication between each BMU and the BCU; the voltage of the DC24V power supply interface comes from the output of the BCU and serves as the working power supply for each BMU.

[0091] In the above embodiment, in order to enhance the guarantee of efficient and stable operation of the battery module unit, the heating device is installed inside the shell of the battery module and is arranged near the bottom, that is, the heating device inside each group of battery modules is installed inside the corresponding battery module shell, and the heating device is preferably a polyimide film (i.e., PI heating film). In specific applications, BMU will collect and monitor the temperature information of the battery cell in real time and send it to BCU through CAN. When the temperature is less than or equal to the set minimum limit of the working temperature, BCU outputs a low-level instruction to the coil of the heating relay K3 of the high-voltage box unit. When the heating relay K3 coil is powered on, the heating device in the corresponding battery module is powered on and starts heating; when the temperature reaches the set working temperature such as 25°C, BCU outputs a high-level instruction to the heating relay K3 coil, the heating relay K3 coil loses power and disconnects, the heating device in the corresponding battery module is disconnected, and the heating ends.

[0092] In the above embodiment, in order to ensure the working stability and service life of the battery module unit, preferably, a cooling unit interface terminal is provided on the shell of each group of the battery modules, and the cooling unit interface terminal is connected to the cooling device, and the cooling unit interface terminal is connected to the BCU, that is, the cooling device in each group of battery modules is connected to the BCU through the cooling unit interface terminal on its shell. In specific application, the BMU sends the monitored battery cell temperature information to the BCU through CAN in real time. When the battery module temperature is greater than or equal to the set maximum operating temperature limit, the BCU outputs a cooling start instruction to the cooling device in the corresponding battery module, the cooling device in the corresponding battery module is turned on, and the cooling unit in the cooling device starts to start cooling; when the temperature reaches the set operating temperature range, such as 25°C, the BCU outputs a cooling end instruction to the cooling device in the corresponding battery module, and the cooling device in the corresponding battery module is disconnected to end cooling.

[0093] In the above embodiment, in order to further ensure the stable operation of the system, a vehicle communication interface is also provided, and the vehicle communication interface is connected to the BCU. Figure 4-7 As shown, the vehicle communication interface pins A (24V+) and B (24V-) are connected to the BCU terminals J2-32 and J2-16 respectively; the vehicle communication interface pins C (vehicle CANH), D (vehicle CANL), and E (CAN shield) are connected to the BCU terminals J2-12, J2-29 and the shell end respectively; the vehicle communication interface pins F (fast charging CANH) and G (fast charging CANL) are connected to the BCU terminals J2-9 and J2-10 respectively; the vehicle communication interface pin N (off-board charger charging connection confirmation, i.e. CC2) is connected to the BCU J2-5; the vehicle communication interface pin P (charging wake-up) is connected to the BCU terminal J2-15; the vehicle communication interface pin H (cooling control negative terminal of the cooling device of the battery module) is connected to the BCU terminal J2-16, and pin V (cooling control positive terminal of the cooling device of the battery module) is connected to the BCU terminal J3-10.

[0094] In the above embodiment, in order to further ensure that the battery module can be stably charged with DC, as Figure 2-7As shown, preferably, the DC charging interface XS1 is connected to the high-voltage box unit, the vehicle communication interface, and the shell of the movable power supply equipment through wires, wherein the first pin (DC+) of the DC charging interface XS1 is connected to the total positive output terminal of the high-voltage box unit, the second pin (DC-) is connected to the total negative output terminal of the high-voltage box unit, the third pin (PE) is connected to the shell of the movable power supply equipment, the fourth pin (S+) is connected to the F pin (fast charging CANH) of the vehicle communication interface, and the back pin of the fifth pin (S-) is connected to the G pin (fast charging CANL) of the vehicle communication interface, which is used for CAN communication between the off-board charger and the BCU; the back pin of the seventh pin (CC2) of the DC charging interface XS1 is connected to the N pin of the vehicle communication interface, which is used for charging connection confirmation between the off-board charger and the BCU. In the specific application process, when the battery module unit is DC charged, the black start switch QF8 is first turned on, and the isolating switch power supply converts the high voltage provided by the battery module unit into a 24V voltage. The 24V voltage provides power guarantee for the operation of the BCU, the BMU in the battery module, the industrial gateway of the EMS, the industrial Ethernet switch, and the industrial control integrated machine; after the industrial control integrated machine is started, under its control, the display screen lights up, the monitoring is ready, the monitoring interface EMS and BCU, BCU and BMU communication display is normal, and the "Close" button on the monitoring interface is in a closed state; insert the DC charging gun of the off-board charger into the DC charging interface XS1, the DC charging gun will communicate with the BCU, complete the charging connection confirmation, and the off-board charger starts to charge the battery module unit of the power supply system. The industrial control integrated machine display screen displays the charging status in real time. When charging is completed, turn off the power of the off-board charger, remove the DC charging gun of the off-board charger from the DC charging interface XS1, and click the "Stop" button on the industrial control integrated machine monitoring interface to end the DC charging of the battery module unit.

[0095] In the above embodiment, in order to further ensure that the battery module unit can be stably charged by AC, Figure 2-3As shown, preferably, the pins on the back of the AC charging interface XS2 are connected to the mains input switch, i.e., the incoming line end of the first circuit breaker QF1, through wires, and the first circuit breaker QF1 is a three-phase circuit breaker; the outgoing line end of the first circuit breaker QF1 is connected in parallel with the incoming line ends of the second circuit breaker QF2, the third circuit breaker QF3, the fourth circuit breaker QF4, the fifth circuit breaker QF5, the sixth circuit breaker QF6, and the seventh circuit breaker QF7 through wires; the outgoing line end of the second circuit breaker QF2 is connected to the AC side terminal of the PCS. In the specific application process, when the battery module unit is charged with AC, first close the PCS control switch SB1 of the mobile power supply system to start the PCS, then turn on the black start switch QF8, and the isolating switch power supply converts the high voltage of the battery module into a 24V voltage. The 24V voltage provides power guarantee for the operation of the BCU, the BMU of the battery module, the industrial gateway of the EMS system, the industrial Ethernet switch, and the industrial control all-in-one machine; after the industrial control all-in-one machine is started, under its control, the display screen lights up, the monitoring is ready, the EMS and BCU, PCS and EMS, PCS and BCU communication indicators on the monitoring interface show normal, and the "Close" button on the monitoring interface is in a closed state; connect the three-phase AC power of the mains to the AC charging interface XS2, the first indicator light LA1 lights up, and then the first circuit breaker The circuit breaker QF1 is turned on, and the third indicator light LA3 is on; then the second circuit breaker QF2 is turned on, and the second indicator light LA2 is on. At this time, the PCS is successfully connected to the mains, and then the charging power value is entered in the "Grid-connected Charging and Discharging Power Setting" box on the industrial control integrated machine monitoring interface, and the "Grid-connected Mode" button is clicked. Finally, the "Start" button is clicked, and the three-phase AC power from the mains grid starts to be rectified by the PCS to charge the battery module unit. After the charging is completed, press the "Stop" button on the industrial control integrated machine monitoring interface, remove the AC charging gun from the AC charging interface XS2, the first indicator light LA1 goes out, disconnect the second circuit breaker QF2 and the first circuit breaker QF1, the second indicator light LA2 goes out, and the third indicator light LA3 goes out, then the AC charging of the battery module is completed.

[0096] In the above embodiment, in order to ensure the stable operation of the weak current power supply unit to the internal electrical components of the system, preferably, as Figure 2-4As shown, the inlet end of the black start switch QF8 is connected to the total positive inlet end and the total negative inlet end of the high-voltage box unit, that is, the total positive end and the total negative end of the battery module, through wires, and the outlet end of the black start switch QF8 is connected to the input voltage end of the isolation switch power supply. The output voltage ends 24V+ and 24V- of the isolation switch power supply are connected to the wiring terminals J2-32 and J2-16 of the BCU, the V1+ and V1- terminals of the industrial Ethernet switch of the EMS, the V+ and V- terminals of the industrial gateway of the EMS, and the V2+ and V2- terminals of the input end of the DC12V power module through wires; so that the isolation switch power supply can provide working power for the BCU, the industrial Ethernet switch, the industrial gateway, and the 12V power module respectively; the 12V+ and 12V- terminals of the output end of the DC12V power module are connected to the industrial control integrated machine power supply end of the EMS through wires, so as to provide 12V working power for the industrial control integrated machine.

[0097] In the above embodiment, in order to enhance the stability of the power supply system operation, as Figure 2-4 As shown, preferably, the AC side operating voltage range of the energy storage converter unit PCS is 380V-400V, and the DC side operating voltage range is 150-750V; the AC side terminals L1-1, L2-1, L3-1 and N-1 of the energy storage converter PCS are respectively connected to the output terminal of the second circuit breaker QF2 to ensure that the AC side of the energy storage converter unit PCS is respectively connected to the DC charging pile unit, the AC charging pile unit, and the multi-specification voltage power output interface unit; the DC side terminals DC+ and DC- of the energy storage converter unit PCS are respectively connected through The wire connects the total positive output terminal of the high-voltage box unit and the total negative output terminal of the high-voltage box unit to ensure that the DC side of the energy storage converter unit PCS is connected to the high-voltage box unit; the Ethernet port of the energy storage converter unit PCS is connected to port 2 of the industrial Ethernet switch of the EMS through a category 5 twisted pair cable to ensure the stability of the two-way network communication between the PCS and the EMS; the R-IN+ and R-IN- ends of the energy storage converter unit PCS are connected to the PCS control switch SB1 through wires so that the start and stop of the PCS can be controlled by the PCS control switch.

[0098] In the above embodiment, in order to enhance the operation monitoring of the power supply system, preferably, as Figure 2 -7, in the energy management system unit, the CANH and CANL ends of the CAN communication bus interface of the industrial gateway are respectively connected to the pins C and D of the vehicle communication interface through CAN twisted pair cables; the Ethernet port of the industrial gateway, i.e., the Ethernet port, is connected to the port 1 of the industrial Ethernet switch through a category 5 twisted pair cable, and the port 3 of the industrial Ethernet switch is connected to the Ethernet port of the industrial control integrated machine through a category 5 twisted pair cable.

[0099] In the above embodiment, in order to enhance the guarantee of the operating stability of the indicator light unit, preferably, Figure 2-3 As shown, the first indicator light LA1 is connected to the A terminal and the N terminal of the incoming terminal of the first circuit breaker QF1 through a wire; the second indicator light LA2 is connected to the L1-1 terminal and the N-1 terminal of the outgoing terminal of the second circuit breaker QF2 through a wire; the third indicator light LA3 is connected in parallel to the L1 terminal and the N terminal of the first circuit breaker QF1 outgoing terminal, the second circuit breaker QF2 incoming terminal, the third circuit breaker QF3 incoming terminal, the fourth circuit breaker QF4 incoming terminal, the fifth circuit breaker QF5 incoming terminal, the sixth circuit breaker QF6 incoming terminal, and the seventh circuit breaker QF7 incoming terminal through a wire; thereby, effective and stable indication of the operation of the power supply system is achieved.

[0100] Application Examples

[0101] In order to further illustrate the functional effect of the mobile multifunctional power supply system of the present invention, taking the specific application of the mobile power supply equipment of the present invention including the mobile multifunctional power supply system as an example, a more specific application demonstration is provided to more intuitively illustrate the application effect of the mobile power supply equipment provided by the present invention, but the application of the present invention is not limited to this.

[0102] Taking the application of 60kWh mobile power supply equipment as an example, it can be charged with DC by an off-board DC charger, or with AC by the mains. When using 60kWh mobile power supply equipment to charge electrical equipment, it can charge pure electric vehicles and other electrical appliances. The external power supply can be charged with DC or AC as needed, and can also use multi-specification voltage and power output interfaces to power electrical equipment of different specifications. The specific application examples are as follows:

[0103] Application Example 1

[0104] When a non-vehicle DC charger is used for DC charging, take the use of a 7kW non-vehicle DC charger to charge a 60kWh mobile power supply device as an example:

[0105] First, close the black start switch QF8 of the mobile power supply equipment, connect the weak current power supply unit, and ensure the operation of BCU, BMU, EMS, etc. After the industrial control integrated machine of EMS is started, under its control, the display screen lights up, and the monitoring is ready. In the monitoring interface of the industrial control integrated machine, the green lights of the communication indicators of BMU and BCU and BCU and EMS are on, indicating that each communication is normal. The "Close" button on the monitoring interface of the industrial control integrated machine shows the closed state; turn on the power supply of the 7kW non-onboard DC charger, insert the DC charging gun of the 7kW non-onboard DC charger into the DC charging interface of the energy station, and the BCU and the DC charging gun of the 7kW non-onboard DC charger communicate, complete the CC2 charging connection confirmation, the DC charging gun is locked, and the charging preparation is completed;

[0106] Then, click "Off-grid Mode" in the monitoring interface, the off-grid status indicator lights up, charging starts, and the industrial computer screen displays the charging status in real time. You can observe that the battery power value is rising;

[0107] When the battery is fully charged, charging is completed. Press the "Stop" button on the monitoring interface, the DC charging gun is unlocked, remove the DC charging gun of the 7kW off-board DC charger, and complete the DC charging of the 60kWh mobile power supply device.

[0108] Application Example 2

[0109] When AC charging is performed for a mobile power supply device using AC power, take the example of charging a 60kWh mobile power supply device using three-phase AC power of 380V from the mains:

[0110] First, close the PCS control switch SB1 of the mobile power supply equipment, start the PCS, close the black start switch QF8 of the mobile power supply equipment, connect the weak current power supply unit, and ensure the operation of BCU, BMU, EMS, etc. After the industrial control integrated machine of EMS is started, under its control, the display screen lights up, the monitoring is ready, and the monitoring interface EMS and BCU, PCS and EMS, PCS and BCU, BCU and BMU communication display is normal, and the "Close" button on the industrial control integrated machine monitoring interface shows the closed state; close the first circuit breaker QF1 and the second circuit breaker QF2; then, click the "Grid-connected Mode" button in the monitoring interface, and enter the charging power in the "Grid-connected Charging and Discharging Power Setting" box; then, connect the 380V three-phase AC power of the mains to the AC charging interface, and the first indicator light LA1, the second indicator light LA2, and the third indicator light LA3 are on;

[0111] Then, click the "Start" button on the monitoring interface, charging starts, and the industrial computer screen displays the charging status in real time. You can observe that the battery power value is rising;

[0112] When the battery power reaches full capacity, press the "Stop" button on the monitoring interface to end charging, disconnect the AC charging interface, and complete the AC charging of the 60kWh mobile power supply device.

[0113] Application Example 3

[0114] When using a 60kWh mobile power supply device to perform DC charging for electrical equipment, take the DC charging of the Leapmotor T03 pure electric vehicle as an example:

[0115] First, close the PCS control switch SB1 of the mobile power supply equipment, start the PCS, close the black start switch QF8, connect the weak current power supply unit, and ensure the operation of BCU, BMU, EMS, etc. After the industrial control integrated computer of EMS is started, under its control, the display screen lights up, the monitoring is ready, and the communication between EMS and BCU, PCS and EMS, PCS and BCU, BCU and BMU on the monitoring interface is normal, and the "Close" button on the industrial control integrated computer monitoring interface shows the closed state; close the second circuit breaker QF2, the second indicator light LA2 lights up, indicating that the PCS is connected to the DC charging pile input terminal, and the third indicator light LA3 lights up, indicating that the external load can be connected; then close the third circuit breaker QF3, and then click the "off-grid mode" button on the monitoring interface, and the DC charging pile unit starts;

[0116] Then, insert the DC charging gun of the DC charging pile unit into the fast charging port of the Leapmotor T03 electric vehicle. After the DC gun is locked and the DC charging pile unit and the BMS communication of the electric vehicle are confirmed, click the "Auto Full" button on the DC charging pile unit screen to start charging the Leapmotor T03 electric vehicle. During this charging process, the DC voltage output by the battery module in the mobile power supply equipment is inverted into 380V AC through the PCS, and then transmitted to the DC charging pile unit, which then charges the Leapmotor T03 electric vehicle.

[0117] After charging is completed, remove the DC charging gun from the fast charging port of the Leapmotor T03 electric vehicle, disconnect the third circuit breaker QF3 and the second circuit breaker QF2, and complete the DC charging of the Leapmotor T03 electric vehicle.

[0118] Application Example 4

[0119] When using a 60kWh mobile power supply device to charge the power-consuming equipment with AC, take the AC charging of the Leapmotor T03 pure electric vehicle as an example:

[0120] First, close the PCS control switch SB1 of the mobile power supply equipment, start the PCS, close the black start switch QF8, connect the weak current power supply unit, and ensure the operation of BCU, BMU, EMS, etc. After the industrial control integrated machine of EMS is started, under its control, the display screen lights up, the monitoring is ready, and the monitoring interface EMS and BCU, PCS and EMS, PCS and BCU, BCU and BMU communication display is normal, and the "Close" button on the industrial control integrated machine monitoring interface shows the closed state; close the second circuit breaker QF2, the second indicator light LA2 lights up, indicating that the PCS is connected to the input end of the AC charging pile, and the third indicator light LA3 lights up, indicating that the external load can be connected; then close the fourth circuit breaker QF4, and the AC charging pile unit starts;

[0121] Then, click the "Off-grid Mode" button on the monitoring interface, and then insert the AC charging gun of the AC charging pile unit into the slow charging port of the Leapmotor T03 electric vehicle. The AC gun is locked. After the communication between the Leapmotor T03 electric vehicle and the mobile power supply device is confirmed, the mobile power supply device starts to charge the Leapmotor T03 electric vehicle. During this charging process, the DC voltage output by the battery module in the mobile power supply device is inverted into 380V AC power through the PCS, and then converted into a single-phase 220V voltage and transmitted to the AC charging pile unit, and the AC charging pile unit then charges the Leapmotor T03 electric vehicle.

[0122] After charging is completed, remove the AC charging gun from the slow charging port of the Leapmotor T03 electric vehicle, disconnect the fourth circuit breaker QF4 and the second circuit breaker QF2, and end the AC charging of the Leapmotor T03 electric vehicle.

[0123] Application Example 5

[0124] When some electrical appliances are not suitable for charging with a DC charging pile unit or an AC charging pile unit, they can be charged with a voltage power output interface of other specifications, taking charging of a argon arc welder, an outdoor oven, and an outdoor speaker as an example:

[0125] First, close the PCS control switch SB1 of the mobile power supply equipment, start the PCS, close the black start switch QF8, connect the weak current power supply unit, and ensure the operation of BCU, BMU, EMS, etc. After the industrial control integrated machine of EMS is started, under its control, the display screen lights up, the monitoring is ready, and the monitoring interface EMS and BCU, PCS and EMS, PCS and BCU, BCU and BMU communication display is normal, and the "Close" button on the industrial control integrated machine monitoring interface shows the closed state; close the second circuit breaker QF2, and the second indicator LA2 lights up to indicate that the PCS is connected to the corresponding other specifications of voltage power output interface input terminal;

[0126] Then, close the circuit breakers QF5, QF6, and QF7, connect the portable argon arc welder to the 25A three-phase AC interface of the AC 380V output interface, and the argon arc welder can be powered on; connect the outdoor oven to the 16A single-phase AC interface of the AC 220V output interface, and the oven can be powered on; connect the outdoor audio to the 10A single-phase AC interface of the AC 220V output interface, and the audio can be powered on;

[0127] After using the above appliances, disconnect QF5, QF6, and QF7 respectively; you can also connect other appliances simultaneously or separately as needed.

[0128] Through the application of the present invention, it can be seen that the mobile multifunctional power supply system of the present invention and the mobile power supply equipment including the mobile multifunctional power supply system, with an innovative structural setting, integrates DC charging, discharging and energy storage and AC charging, discharging and energy storage, and can meet the charging needs of new energy vehicles and other electrical equipment of different categories and specifications under different working conditions, and a variety of power supply methods can be controlled and selected, with high mobility and flexibility, and can flexibly implement charging of external electrical equipment and internal charging of the system itself. The system runs stably and reliably, and the operation is simple and fast, which is conducive to overall movement according to the needs of different application scenarios and electrical equipment. Compared with existing fixed charging piles, it greatly saves occupied space and economic costs, can efficiently meet the charging needs of users such as electric vehicles on the way or in the suburbs or other places without fixed charging piles, and effectively alleviates the charging anxiety of relevant users. It can serve as a good supplement to the existing charging pile market, and is particularly suitable for promotion and use in areas with mobile and flexible power supply requirements.

[0129] The present invention is not limited to the above-mentioned embodiments, and any obvious improvements or changes to the above-mentioned embodiments made by those skilled in the art will not exceed the concept of the present invention and the protection scope of the appended claims.

Claims

1. A mobile multifunctional power supply system, comprising a DC charging pile unit and an AC charging pile unit, characterized in that: It also includes battery module unit, high voltage box unit, energy storage converter unit, energy management system unit and weak current power supply unit, among which, The battery module unit is connected to the high-voltage box unit; the battery module unit is used to output current to the DC charging pile unit and / or AC charging pile unit through the high-voltage box unit and the energy storage converter unit in sequence, and is used to send status information of the battery module unit to the high-voltage box unit and receive instructions sent by the high-voltage box unit; The high-voltage box unit is respectively connected to the energy management system unit, the energy storage converter unit, and the weak current power supply unit; the high-voltage box unit is used to receive status information of the battery module unit and send it to the energy management system unit and the energy storage converter unit, receive instructions sent by the energy management system unit, and send instructions to the battery module unit; The energy storage converter unit is respectively connected to the DC charging pile unit, the AC charging pile unit, the high-voltage box unit, and the energy management system unit; the energy storage converter unit is used to send status information of the energy storage converter to the energy management system unit, receive instructions sent by the energy management system unit, receive information sent by the high-voltage box unit, adjust the current input to the DC charging pile unit, and adjust the current input to the AC charging pile unit; The energy management system unit is respectively connected to the high-voltage box unit, the energy storage converter unit, and the weak current power supply unit; the energy management system unit is used to process the received information, and send instructions to the high-voltage box unit and the energy storage converter according to the data processing situation, and control the shutdown of the mobile multi-functional power supply system; The weak current power supply unit is connected to the battery module unit, the high voltage box unit and the energy management system unit respectively; the weak current power supply unit is used to supply power to the electrical components in the battery module unit, the high voltage box unit and the energy management system unit; The DC charging pile unit is used to charge the external device to be charged with the current adjusted by the energy storage converter unit; the AC charging pile unit is used to charge the external device to be charged with the current adjusted by the energy storage converter unit.

2. The mobile multifunctional power supply system according to claim 1, characterized in that: The battery module unit includes two or more battery modules, each of which is provided with a battery pack and a battery management unit respectively connected to the battery pack; The battery modules are connected in series. The high-voltage box unit includes a battery cluster control unit; The battery management unit provided in each group of the battery modules is connected to the battery cluster control unit; The battery cluster control unit is connected to the energy management system unit and the energy storage converter unit respectively.

3. The mobile multifunctional power supply system according to claim 1, characterized in that: The weak current power supply unit includes a black start switch, an isolating switch power supply and a power supply module connected in sequence. The black start switch is connected to the high voltage box unit, The power supply module is connected to the energy management system unit.

4. The mobile multifunctional power supply system according to claim 1, characterized in that: The mobile multifunctional power supply system further includes a DC charging interface and an AC charging interface, wherein the DC charging interface is connected to the high-voltage box unit, and the AC charging interface is connected to the energy storage converter unit; Wherein, the DC charging interface does not include a low-voltage auxiliary power supply; The mobile multifunctional power supply system further includes a multi-specification voltage and power output interface unit, which includes more than two groups of output interfaces, and each of the output interfaces is connected to the energy storage converter unit.

5. The mobile multifunctional power supply system according to claim 1, characterized in that: The DC charging pile unit can be connected to the mains or the energy storage converter unit; The AC charging pile unit can be connected to the mains or the energy storage converter unit; The energy storage converter unit can be connected to the mains power and the DC charging pile unit in parallel at the same time, and / or the energy storage converter unit can be connected to the mains power and the AC charging pile unit in parallel at the same time.

6. The mobile multifunctional power supply system according to any one of claims 1 to 5, characterized in that: The energy management system unit includes an industrial gateway, an industrial Ethernet switch and an industrial control all-in-one computer connected in sequence; The industrial gateway is connected to the high-voltage box unit; The industrial Ethernet switch is connected to the energy storage converter unit; The industrial gateway, the industrial Ethernet switch, and the industrial control all-in-one computer are respectively connected to the weak current power supply unit.

7. A mobile power supply device, characterized in that: The mobile power supply device includes the mobile multifunctional power supply system according to any one of claims 1 to 6.

8. A power supply control method for a mobile multifunctional power supply system according to any one of claims 1 to 6, characterized in that: include: Outputting current to the DC charging pile unit and / or the AC charging pile unit through the battery module unit in sequence through the high-voltage box unit and the energy storage converter unit, wherein the battery module unit is further used to send status information of the battery module unit to the high-voltage box unit and receive instructions sent by the high-voltage box unit; receiving the status information of the battery module unit through the high-voltage box unit and sending it to the energy management system unit and the energy storage converter unit, receiving instructions sent by the energy management system unit, and sending instructions to the battery module unit; Sending status information of the energy storage converter to the energy management system unit through the energy storage converter unit, receiving instructions sent by the energy management system unit, receiving information sent by the high-voltage box unit, and adjusting the current input to the DC charging pile unit and / or the AC charging pile unit; The energy management system unit processes the received information and sends instructions to the high-voltage box unit and the energy storage converter according to the data processing results, and controls the shutdown of the mobile multifunctional power supply system; Powering the electrical components in the battery module unit, high-voltage box unit and energy management system unit through the weak current power supply unit; The current adjusted by the energy storage converter unit is transmitted to charge external electrical equipment through the DC charging pile unit and / or the AC charging pile unit.

9. The power supply control method according to claim 8, wherein: When the energy storage converter unit is powered on and the DC charging pile unit is connected to the energy storage converter unit, the energy storage converter unit performs DC inversion on the DC power input from the battery module unit to the energy storage converter unit, and the obtained three-phase AC power is input to the DC charging pile unit, and the DC charging pile unit then supplies power to the external electrical equipment; When the energy storage converter unit is powered on and the AC charging pile unit is connected to the energy storage converter unit, the energy storage converter performs DC inversion on the DC power input to the energy storage converter by the battery module unit, and the obtained three-phase AC power is input to the AC charging pile unit, and the AC charging pile unit then supplies power to external electrical equipment; When the energy storage converter unit is in the on state and is connected in parallel with the mains and the DC charging pile unit, the energy storage converter unit performs DC inversion on the DC power input from the battery module unit to the energy storage converter unit, and the resulting three-phase AC power is simultaneously input into the mains grid and the DC charging pile unit. The DC charging pile unit is used to supply power to external electrical equipment while also feeding energy back to the grid where the mains is located. When the energy storage converter unit is in the on state, and the energy storage converter unit is connected in parallel with the mains and the AC charging pile unit, the energy storage converter unit performs DC inversion on the DC power input to the energy storage converter unit by the battery module unit, and the obtained three-phase AC power is simultaneously input into the mains power grid and the AC charging pile unit, thereby supplying power to external electrical equipment through the AC charging pile unit and feeding energy back to the grid where the mains is located; When the energy storage converter unit is in the power-on state, and the DC charging pile unit and the AC charging pile unit are both connected in parallel with the energy storage converter unit, the energy storage converter performs DC inversion on the DC power input by the battery module unit to the energy storage converter, and the obtained three-phase AC power is simultaneously input into the DC charging pile unit and the AC charging pile unit, respectively, and the DC charging pile unit and the AC charging pile unit then respectively supply power to external power devices; When the energy storage converter unit is in the on state, the energy storage converter unit is connected in parallel with the mains, the DC charging pile unit, and the AC charging pile unit respectively, the energy storage converter unit performs DC inversion on the DC power input to the energy storage converter unit by the battery module unit, and the obtained three-phase AC power is simultaneously input into the mains power grid, the DC charging pile unit, and the AC charging pile unit, while the DC charging pile unit and the AC charging pile unit are used to respectively supply power to external electrical equipment and realize energy feedback to the grid where the mains is located; When the energy storage converter unit is in a shutdown state, the DC charging pile unit can be connected to the mains to supply power to external electrical equipment; When the energy storage converter unit is in a shutdown state, the AC charging pile unit can be connected to the mains to supply power to external electrical equipment; When the energy storage converter unit is in shutdown state, the DC charging pile unit and the AC charging pile unit can be connected to the mains at the same time, so that the DC charging pile unit and the AC charging pile unit can supply power to external power devices at the same time.

10. The power supply control method according to claim 8 or 9, characterized in that: When the battery module unit needs to be DC charged, the AC side of the energy storage converter unit is disconnected, and the battery module unit is charged via the high-voltage box unit using an off-board charger through a DC charging interface without a low-voltage auxiliary power supply; When the battery module unit needs to be AC ​​charged, the AC side of the energy storage converter unit is in a connected state, and the three-phase AC power of the mains power grid is connected to the AC charging interface connected to the energy storage converter unit. The three-phase AC power from the mains power grid is rectified into DC power by the energy storage converter unit and then charged to the battery module unit; When power supply is required for three or more external electrical devices, the energy storage converter unit is in the on state, and the energy storage converter unit is connected in parallel with the multi-specification voltage and power output interface unit connected to the external electrical devices, and / or the DC charging pile unit, and / or the AC charging pile unit. After the energy storage converter unit performs DC inversion on the DC power input by the battery module unit to the energy storage converter unit, the obtained three-phase AC power is simultaneously input into the multi-specification voltage and power output interface unit, and / or the DC charging pile unit, and / or the AC charging pile unit, and the external electrical devices are respectively powered by the multi-specification voltage and power output interface unit, and / or the DC charging pile unit, and / or the AC charging pile unit.

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