Low-voltage stacking light storage and charging all-in-one machine

Abstract

The utility model relates to the technical field of energy storage equipment, in particular to a low-voltage stacking light storage and charging all-in-one machine. The system comprises a battery pack module and an energy storage variable-current charging module, the energy storage variable-current charging module is connected with the battery pack module in a stacked mode, the energy storage variable-current charging module comprises an energy storage variable-current box body, an energy storage variable-current mainboard, a charging mainboard, an automatic change-over switch board, an AC connector and a charging pile, and the battery pack module is connected with the energy storage variable-current mainboard. An AC input port and an AC output port of the energy storage converter mainboard are respectively connected with the AC connector, an AC-DC bidirectional conversion unit is arranged in the energy storage converter mainboard, the charging pile is connected with the charging mainboard, the charging mainboard is connected with the automatic change-over switch board, an AC-AC bidirectional power supply unit is arranged in the charging mainboard, a switching control unit is arranged in the automatic change-over switch board, and the automatic change-over switch board is connected with the AC connector. The automatic change-over switch board is connected with the energy storage converter mainboard through the switching control unit. According to the all-in-one machine, the number of wires and interfaces is reduced, and the effects of switching of multiple energy supply modes and bidirectional power supply are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage equipment, and in particular to a low-voltage stacked photovoltaic storage and charging integrated machine. Background Art

[0002] With the emergence of various new household electrical devices, household electricity consumption is also increasing. With the rapid development of new energy vehicles and energy storage systems, the combined use of these two to solve household electricity problems is inevitable. Current energy storage battery modules and charging station modules have numerous interfaces and wiring, making installation complex, time-consuming, and inefficient. Furthermore, after the system is installed, the excessive number of power busbars and communication cables detracts from the overall aesthetics of the product. Furthermore, energy storage systems with charging stations can only charge new energy vehicles in one direction, without the ability to switch between multiple energy supply methods or reverse charging. Utility Model Content

[0003] The utility model provides a low-voltage stacked photovoltaic storage and charging integrated machine, which aims to solve the problems of existing energy storage and charging equipment such as multiple interfaces, multiple wiring, and a single charging method.

[0004] The utility model provides a low-voltage stacked photovoltaic storage and charging integrated machine, comprising a battery pack module and an energy storage conversion charging module, wherein the energy storage conversion charging module is stacked and connected with the battery pack module, and the energy storage conversion charging module comprises an energy storage conversion box, an energy storage conversion mainboard, a charging mainboard, an automatic transfer switch board, an AC connector, and a charging pile, wherein the energy storage conversion mainboard, the charging mainboard, the automatic transfer switch board, the AC connector, and the charging pile are all installed on the energy storage conversion box, the battery pack module is connected to the energy storage conversion mainboard, the AC input port and the AC output port of the energy storage conversion mainboard are respectively connected to the AC connector, the energy storage conversion mainboard has a built-in AC-DC bidirectional conversion unit, the charging pile is connected to the charging mainboard, the charging mainboard is connected to the automatic transfer switch board, the charging mainboard has a built-in AC-AC bidirectional power supply unit, the automatic transfer switch board has a built-in switching control unit, and the automatic transfer switch board is connected to the energy storage conversion mainboard via the switching control unit.

[0005] As a further improvement of the present invention, the AC input port of the energy storage converter mainboard is connected to the mains end through an AC connector, and the AC output port of the energy storage converter mainboard is connected to the load end through an AC connector.

[0006] As a further improvement of the present invention, the energy storage and conversion charging module also includes a photovoltaic connector for external photovoltaic connection and a DC isolating switch for controlling photovoltaic on and off. The photovoltaic connector and the DC isolating switch are respectively connected to the energy storage and conversion mainboard.

[0007] As a further improvement of the present invention, the energy storage and current conversion charging module further includes a socket, which is connected to the energy storage and current conversion mainboard.

[0008] As a further improvement of the present invention, the energy storage converter charging module also includes a circuit breaker for controlling the on and off of the circuit and an emergency stop switch for interrupting the charging pile. The circuit breaker and the emergency stop switch are installed on the energy storage converter box, and the circuit breaker and the emergency stop switch are respectively connected to the energy storage converter mainboard.

[0009] As a further improvement of the present invention, the energy storage and current conversion charging module also includes an energy storage and current conversion communication adapter board, and the battery pack module includes a battery communication adapter board, and the energy storage and current conversion communication adapter board establishes a communication connection with the battery communication adapter board.

[0010] As a further improvement of the present invention, the energy storage and current conversion charging module also includes a WIFI module for communicating with a server and an APP, and the WIFI module is connected to the energy storage and current conversion mainboard.

[0011] As a further improvement of the present invention, the battery pack module includes a battery case, a battery module, a battery mainboard, and a battery plug-in connector. The battery module and the battery mainboard are installed in the battery case, the battery mainboard is connected to the battery module, the battery plug-in connector is assembled on the battery case and connected to the battery mainboard, and the energy storage and conversion charging module includes a charging plug-in connector, which is connected to the energy storage and conversion mainboard, and the charging plug-in connector is docked with the battery plug-in connector.

[0012] As a further improvement of the present invention, the battery-to-plug connector includes a battery-to-plug female connector and a battery-to-plug male connector. The multiple battery pack modules are docked in sequence through the cooperation of the battery-to-plug female connector and the battery-to-plug male connector. The positive and negative poles of the battery modules in each battery pack module are respectively connected to the positive and negative poles of the battery-to-plug female connector and the battery-to-plug male connector.

[0013] As a further improvement of the present invention, the low-voltage stacked optical storage and charging machine also includes a base operating module, which includes a base and running wheels. The base is installed at the bottom of the entire low-voltage stacked optical storage and charging machine, and the running wheels are connected to the bottom of the base.

[0014] The beneficial effects of the present invention are as follows: the battery pack module and the energy storage and conversion charging module are connected by stacking the plug connectors, which reduces the number of wiring and interfaces and makes the overall structure simpler; the energy storage and conversion charging module is equipped with an AC-DC bidirectional conversion unit, an AC-AC bidirectional power supply unit, a switching control unit, etc., which realizes the switching of multiple energy supply modes and the effect of bidirectional power supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is the overall structure diagram of the low-voltage stacked photovoltaic storage and charging integrated device of the utility model;

[0016] Figure 2 This is an exploded diagram of the structure of the low-voltage stacked photovoltaic storage and charging device of the utility model;

[0017] Figure 3 This is an exploded diagram of the structure of the energy storage current conversion charging module in the utility model;

[0018] Figure 4 This is an exploded view of the structure of the battery pack module in the present invention;

[0019] Figure 5 This is an exploded view of the structure of the base operating module in the utility model;

[0020] Figure 6 This is a schematic diagram of the internal circuit connections of the low-voltage stacked photovoltaic storage and charging integrated device of the utility model. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0022] like Figures 1 to 6 As shown, the utility model is a low-voltage stacked photovoltaic storage and charging integrated machine, including a battery pack module 2 and an energy storage conversion charging module 1. The energy storage conversion charging module 1 is stacked and connected with the battery pack module 2. The energy storage conversion charging module 1 includes an energy storage conversion box 4, an energy storage conversion mainboard 5, a charging mainboard 6, an automatic transfer switch board 7, an AC connector 8, and a charging pile 9. The energy storage conversion mainboard 5, the charging mainboard 6, the automatic transfer switch board 7, the AC connector 8, and the charging pile 9 are all installed on the energy storage conversion box 4. The battery pack module 2 is connected to the energy storage conversion mainboard 5. The AC input port and the AC output port of the energy storage conversion mainboard 5 are respectively connected to the AC connector 8. The energy storage conversion mainboard 5 has a built-in AC-DC bidirectional conversion unit. The charging pile 9 is connected to the charging mainboard 6. The charging mainboard 6 is connected to the automatic transfer switch board 7. The charging mainboard 6 has a built-in AC-AC bidirectional power supply unit. The automatic transfer switch board 7 has a built-in switching control unit. The automatic transfer switch board 7 is connected to the energy storage conversion mainboard 5 through the switching control unit.

[0023] The AC input port of the energy storage converter mainboard 5 is connected to the mains terminal through the AC connector 8 , and the AC output port of the energy storage converter mainboard 5 is connected to the load terminal through the AC connector 8 .

[0024] The charging motherboard 6 is equipped with an AC-AC bidirectional power supply unit, which enables the charging station 9 to charge the car or draw power from the car. The energy storage converter motherboard 5 is equipped with an AC-DC bidirectional conversion module, which can convert AC power to charge the battery, or convert the battery to AC power for discharge. Alternatively, it can detect photovoltaic input during the day to charge the battery.

[0025] The automatic transfer switchboard 7 has a built-in switching control unit. When charging the vehicle, it detects the user's load and calculates whether the remaining output of the user's load meets the demand of the charging station 9 for the vehicle. If so, only the user's load is supplied to the charging station 9 for charging. If not, the maximum output power of the charging station is supplemented by the mains power grid. If the mains power grid is not providing power, the charging station's power supply to the vehicle is reduced. In the event of a home power outage and power needs to be drawn from the vehicle to the user's load, the vehicle checks the load demand request from the PCS and supplies power to the home user's load.

[0026] The energy storage converter housing 4 houses the PCS (energy storage converter) and other internal components. The energy storage converter mainboard 5 is the control board within the PCS. The battery pack module 2 charges the user-side load and the vehicle through the PCS. The mainboard 5 controls the input of utility power, the output of loads, and the input of photovoltaic power. The charging mainboard 6 (EV mainboard) controls the input of power. The automatic transfer switch board 7 (ATS board) switches between battery power and grid power for the charging pile 9. An AC connector 8 connects to the mains. The charging pile 9 includes a charging cable that connects to the charging mainboard 6 to draw power from or charge the vehicle. The charging pile 9 is connected to the charging mainboard 6. The automatic transfer switch board 7 connects to and controls the charging mainboard 6, which controls the power flow between the load and grid. The mainboard 5 is secured to the energy storage converter housing 4 with waterproof tape.

[0027] The energy storage and converter charging module 1 also includes a photovoltaic connector 10 for connecting to an external photovoltaic system and a DC isolating switch 11 for controlling the photovoltaic power supply. Both the photovoltaic connector 10 and the DC isolating switch 11 are connected to the energy storage and converter mainboard 5. The DC isolating switch 11 is equipped with screw threads and a sealing gasket, and is secured to the energy storage and converter housing 4 with nuts.

[0028] The energy storage and conversion charging module 1 also includes a socket 12, which is connected to the energy storage and conversion mainboard 5. Socket 12 is used to directly provide power to the user. Socket 12 is provided with a sealing gasket and is fixed to the energy storage and conversion box 4 with screws.

[0029] The energy storage converter charging module 1 also includes a circuit breaker 13 for controlling the on / off state of the circuit and an emergency stop switch 14 for interrupting the charging station 9. These circuit breaker 13 and emergency stop switch 14 are mounted on the energy storage converter housing 4 and are respectively connected to the energy storage converter mainboard 5. The circuit breaker 13 controls the on / off state of the circuit; the emergency stop switch 14 interrupts the function of the charging station 9 in an emergency. A waterproof box 15 is also attached to the exterior of the circuit breaker 13 to provide waterproof protection. The circuit breaker 13 has a guide rail slot for attaching it to the energy storage converter housing 4. The waterproof box 15 is equipped with a sealing gasket and is secured to the energy storage converter housing 4 with screws. The emergency stop switch 14 is equipped with threads and a waterproof washer and is secured to the opening of the energy storage converter housing 4 with a nut.

[0030] The energy storage and current conversion charging module 1 also includes an energy storage and current conversion communication adapter board 16, and the battery pack module 2 includes a battery communication adapter board 34. The energy storage and current conversion communication adapter board 16 establishes a communication connection with the battery communication adapter board 34. The energy storage and current conversion communication adapter board 16 is used for communication between the PCS and the battery pack module 2, the EV system, and other systems.

[0031] The energy storage and conversion charging module 1 further includes a WIFI module 17 for communicating with a server and an APP, and the WIFI module 17 is connected to the energy storage and conversion mainboard 5. It also includes a communication connector 42, which is used for communicating with the outside.

[0032] The AC connector 8 , the photovoltaic connector 10 , the communication connector 42 , and the WIFI module 17 are provided with threads and waterproof washers, and are fixed to the energy storage converter box 4 by nuts.

[0033] The energy storage and conversion charging module 1 also includes an energy storage vent valve 18, a maintenance cover 19, a first sealing gasket 20, a PCS light board 21, a PCS lens 22, an EV lens 23, and an EV card display panel 24. When electrical components within the energy storage and conversion housing 4 change and gas is ejected, the energy storage vent valve 18 releases pressure to prevent explosion. The maintenance cover 19 is used to open one side of the energy storage and conversion housing 4 for easy maintenance. The first sealing gasket 20 seals the maintenance cover 19. The PCS light board 21 displays the PCS status. The PCS lens 22 allows light to pass through the PCS light board 21 while preventing water from leaking through the lamp hole. The EV lens 23 allows light to pass through the EV display panel while preventing water from leaking through the lamp hole. The EV card display panel 24 displays the EV status and can also recognize an NFC card to control the charging station 9. The EV lens 23 is secured to the energy storage and conversion housing 4 with waterproof adhesive. The first sealing gasket 20 is provided with a double-sided tape, through which it is adhered to the maintenance cover 19. The energy storage converter box 4 is provided with a waterproof nut for fixing the maintenance cover 19, which is fixed thereon by screws.

[0034] The energy storage vent valve 18 itself is equipped with a plastic nut and fixed to the energy storage converter housing 4. The energy storage converter housing 4 is equipped with studs for securing the PCBA. The PCS light board 21, EV card display board 24, charging main board 6, and automatic transfer switch board 7 are fixed to it using screws. The PCS lens 22 is provided with waterproof glue and is fixed to the energy storage converter housing 4.

[0035] The battery pack module 2 includes a battery case 26, a battery module 27, a battery main board 28, and a battery plug-in connector 29. The battery module 27 and the battery main board 28 are installed in the battery case 26. The battery main board 28 is connected to the battery module 27. The battery plug-in connector 29 is assembled on the battery case 26 and connected to the battery main board 28. The energy storage and conversion charging module 1 includes a charging plug-in connector 25. The charging plug-in connector 25 is connected to the energy storage and conversion main board 5, and the charging plug-in connector 25 is docked with the battery plug-in connector 29.

[0036] The battery case 26 houses the batteries and other internal components. The battery modules 27 store and release power. The battery motherboard 28 (BMS, battery management system) manages battery data and provides better battery protection. The battery connector 29 provides power and communication to the battery pack module 2 while also preventing water ingress. The battery modules 27 are mounted within the battery case 26 via the BMS mounting bracket 43. A battery cover 32 is attached to the top of the battery case 26. This cover is connected to the battery case 26 via a second sealing gasket 33, sealing the entire battery pack module 2.

[0037] The charging connector 25 of the energy storage and converter charging module 1 provides power and communication to the battery pack module 2 while also preventing water ingress. The charging connector 25 is a female connector. The energy storage and converter housing 4 is equipped with a waterproof nut to secure the connector. The charging connector 25 is fitted with a sealing gasket and secured to the energy storage and converter housing 4 with screws.

[0038] The battery module 27 is designed with openings at both ends and is secured to the battery case 26 with screws. The BMS mounting bracket is equipped with studs, which screw the battery mainboard 28 and communication adapter board to the BMS mounting bracket 11. The BMS mounting bracket is then secured to the battery case 26 with nuts. The second sealing gasket 33 is provided with sealing tape, which is secured to the groove designed for the battery case 26. Nuts are provided on the battery case 26 to secure the battery cover 32, which is also secured with screws.

[0039] The battery pack module 2 also includes a battery communication adapter board 34, a battery switch 35, a battery light board 36, a battery lens 37, and a battery vent valve 38. The battery communication adapter board 34 enables communication between the battery main board 28 and other external systems. The battery switch 35 controls the opening and closing of the battery pack module 2. The battery light board 36 displays the battery status. The battery lens 37 allows light to pass through while preventing water from escaping through the light hole. The battery vent valve 38 relieves pressure when internal battery changes and gas is emitted, preventing explosion. The battery vent valve 38 itself is equipped with a plastic nut that locks onto the battery case 26. The battery case 26 is equipped with studs to which the battery light board 36 is screwed. The battery lens 37 is coated with waterproof adhesive and secured to the battery case 26.

[0040] The battery-to-plug connector 29 includes a female battery-to-plug connector 30 and a male battery-to-plug connector 31. Multiple battery pack modules 2 are sequentially connected through the mating of the female battery-to-plug connector 30 and the male battery-to-plug connector 31. The positive and negative poles of the battery modules 27 in each battery pack module 2 are connected to the positive and negative poles of the female battery-to-plug connector 30 and the male battery-to-plug connector 31, respectively. This connection between the positive and negative poles of the battery modules 27 and the female battery-to-plug connector 30 and the male battery-to-plug connector 31 enables multiple battery modules 27 to be connected in parallel to form a low-voltage power supply. The battery case 26 is equipped with a waterproof nut to secure the socket. The female battery-to-plug connector 30 and the male battery-to-plug connector 31 are equipped with sealing gaskets and secured to the battery case 26 with screws.

[0041] The low-voltage stacked photovoltaic storage and charging system also includes a base operating module 3, which includes a base 39 and a running wheel 40. The base 39 is installed at the bottom of the entire low-voltage stacked photovoltaic storage and charging system, and the running wheel 40 is connected to the bottom of the base 39. The base 39 is used to support the entire low-voltage stacked photovoltaic storage and charging system, and the running wheel 40 is used to support the movement of the entire low-voltage stacked photovoltaic storage and charging system. The base 39 is also connected to a third sealing gasket 41, which is used to seal the battery-to-female connector 30 at the bottom of the lowest battery pack module 2 to prevent accumulated water from entering the connector. The base 39 is provided with a nut, and the running wheel 40 is fixed to the base 39 by screws. The third sealing gasket 41 is provided with sealing tape, which is fixed to the groove provided in the base 39.

[0042] The base 39 of the base operating module 3 is equipped with a guide screw. The battery housing 26 of the battery pack module 2 is equipped with mounting locating nuts at the bottom, allowing it to be installed on the base operating module 3. The top of the battery housing 26 of the battery pack module 2 is also equipped with guide screws, allowing easy installation between battery pack modules 2 and between the battery pack module 2 and the energy storage and conversion charging module 1. The energy storage and conversion charging module 1 has a mounting locating nut at the bottom of the energy storage and conversion charging module 1, allowing it to be installed on the battery pack module 2. The battery housing cover 32 of the battery pack module 2 is equipped with a pair of handles, allowing the battery housing 26 to be easily lifted.

[0043] This low-voltage stacked photovoltaic storage and charging device has the following advantages:

[0044] (1) Through the photovoltaic battery energy storage system, the photovoltaic power generation can be used to directly charge the car during the day; or the photovoltaic power generated during the day can be stored in the battery and then charged to the car at night.

[0045] (2) When the household load has a power demand, the batteries in the solar-powered battery energy storage system will give priority to supplying power to the household. When the battery power is insufficient, the household power demand can be met temporarily by taking power from the car through the solar-powered battery energy storage system's charging station 9.

[0046] (3) No exposed wiring, simple installation, equipped with wheels, can be easily moved to meet the needs of moving due to changes in regional electricity demand.

[0047] (4) Equipped with WIFI, you can set the timer for car charging or other home power supply needs in the APP. It is easy to operate and more intelligent.

[0048] (5) The solar-rechargeable battery energy storage system is designed with internal heat transfer and heat conduction. The entire system has good sealing performance and can withstand complex natural environments, such as wind and rain.

[0049] (6) Hidden handles make transportation and installation easier without affecting the overall appearance.

[0050] The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For those skilled in the art of the present invention, without departing from the concept of the present invention, several simple deductions or substitutions can be made, which should be considered to fall within the scope of protection of the present invention.

Claims

1. A low-voltage stacked photovoltaic storage and charging integrated device, characterized in that: It includes a battery pack module and an energy storage and current conversion charging module. The energy storage and current conversion charging module is stacked and connected with the battery pack module. The energy storage and current conversion charging module includes an energy storage and current conversion box, an energy storage and current conversion mainboard, a charging mainboard, an automatic transfer switch board, an AC connector, and a charging pile. The energy storage and current conversion mainboard, the charging mainboard, the automatic transfer switch board, the AC connector, and the charging pile are all installed on the energy storage and current conversion box. The battery pack module is connected to the energy storage and current conversion mainboard. The AC input port and the AC output port of the energy storage and current conversion mainboard are respectively connected to the AC connector. The energy storage and current conversion mainboard has a built-in AC-DC bidirectional conversion unit. The charging pile is connected to the charging mainboard. The charging mainboard is connected to the automatic transfer switch board. The charging mainboard has a built-in AC-AC bidirectional power supply unit. The automatic transfer switch board has a built-in switching control unit. The automatic transfer switch board is connected to the energy storage and current conversion mainboard through the switching control unit.

2. The low-voltage stacked photovoltaic storage and charging device according to claim 1, characterized in that: The AC input port of the energy storage converter mainboard is connected to the mains terminal through an AC connector, and the AC output port of the energy storage converter mainboard is connected to the load terminal through an AC connector.

3. The low-voltage stacked photovoltaic storage and charging device according to claim 1, characterized in that: The energy storage and conversion charging module also includes a photovoltaic connector for external photovoltaic connection and a DC isolating switch for controlling photovoltaic on and off. The photovoltaic connector and the DC isolating switch are respectively connected to the energy storage and conversion mainboard.

4. The low-voltage stacked photovoltaic storage and charging integrated device according to claim 1, characterized in that: The energy storage and current conversion charging module also includes a socket, which is connected to the energy storage and current conversion mainboard.

5. The low-voltage stacked photovoltaic storage and charging integrated device according to claim 1, characterized in that: The energy storage converter charging module also includes a circuit breaker for controlling the on and off of the circuit and an emergency stop switch for interrupting the charging pile. The circuit breaker and the emergency stop switch are installed on the energy storage converter box, and the circuit breaker and the emergency stop switch are respectively connected to the energy storage converter mainboard.

6. The low-voltage stacked photovoltaic storage and charging device according to claim 1, characterized in that: The energy storage and current conversion charging module also includes an energy storage and current conversion communication adapter board, and the battery pack module includes a battery communication adapter board. The energy storage and current conversion communication adapter board establishes a communication connection with the battery communication adapter board.

7. The low-voltage stacked photovoltaic storage and charging device according to claim 1, characterized in that: The energy storage and current conversion charging module also includes a WIFI module for communicating with a server and an APP, and the WIFI module is connected to the energy storage and current conversion mainboard.

8. The low-voltage stacked photovoltaic storage and charging integrated device according to claim 1, characterized in that: The battery pack module includes a battery case, a battery module, a battery mainboard, and a battery plug-in connector. The battery module and the battery mainboard are installed in the battery case. The battery mainboard is connected to the battery module. The battery plug-in connector is assembled on the battery case and connected to the battery mainboard. The energy storage and conversion charging module includes a charging plug-in connector. The charging plug-in connector is connected to the energy storage and conversion mainboard, and the charging plug-in connector is docked with the battery plug-in connector.

9. The low-voltage stacked photovoltaic storage and charging device according to claim 8, characterized in that: The battery-to-plug connector includes a battery-to-plug female connector and a battery-to-plug male connector. The multiple battery pack modules are docked in sequence through the cooperation of the battery-to-plug female connector and the battery-to-plug male connector. The positive and negative poles of the battery modules in each battery pack module are respectively connected to the positive and negative poles of the battery-to-plug female connector and the battery-to-plug male connector.

10. The low-voltage stacked photovoltaic storage and charging device according to claim 1, characterized in that: It also includes a base operating module, which includes a base and a running wheel. The base is installed at the bottom of the entire low-voltage stacked photovoltaic storage and charging integrated machine, and the running wheel is connected to the bottom of the base.

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