CN210111617U

CN210111617U - Energy storage electrical power generating system container

Info

Publication number: CN210111617U
Application number: CN201822137592.8U
Authority: CN
Inventors: 阮超
Original assignee: Shanghai Aerospace Industry (group) Co Ltd
Current assignee: Shanghai Aerospace Industry (group) Co Ltd
Priority date: 2018-12-19
Filing date: 2018-12-19
Publication date: 2020-02-21
Anticipated expiration: 2028-12-19

Abstract

The utility model discloses an energy storage power supply system container, a truss structure is arranged in a compartment body, the rear end of the truss structure is fixed on the inner wall of the compartment body, the truss structure comprises a hollow grid for placing an energy storage battery, the hollow grid is provided with a battery connecting terminal, and the front end of the truss structure is provided with an air conditioner and a distribution box; at least part of the battery connecting terminals of the hollow spaces are connected to the distribution box in parallel; the top of the compartment body is provided with a lighting mechanism, the side wall of the compartment body is provided with an air channel and an air outlet which communicates the air channel with the inner space of the compartment body, and the air channel is connected to an air flow power mechanism. Set up the truss structure in a plurality of container and place battery energy storage group, can connect a plurality of energy storage batteries to electric wire netting to adjust the output of electric wire netting according to the actual load condition in real time, it is fast to have a reaction rate, and the energy is extravagant low, and fault-tolerant ability is strong advantage, has greatly helped maintaining the balance of electric wire netting load.

Description

Energy storage electrical power generating system container

Technical Field

The utility model relates to a power supply unit technical field especially relates to a container for placing energy storage electrical power generating system.

Background

In the present society, the demand of electric energy as clean energy is higher and higher, however, the production of electric energy still depends on traditional energy such as fossil energy, and the use of these chemical energy in power plants has already caused great environmental problems. Therefore, the cleanliness of electric power is still insufficient at present.

With the development of environmental protection, people have used green energy sources, including renewable energy sources such as solar energy, wind energy, ocean energy and the like, to convert and generate electric energy. However, the biggest problem of power generation from these green energy sources is that the energy output is not stable, and for example, solar energy varies with circadian rhythm, weather change, and season cycle. Wind energy is seasonal and random, and ocean energy also has periodic variation, so when the energy sources are used for generating electricity, the power of the generated electric energy has obvious fluctuation and intermittency. In addition, normally, the load of the power grid itself has instability, such as the characteristic of daytime peak and night valley, because the electricity consumption is greatly reduced at night, so that the price difference of day and night electricity is large. However, for example, wind power generation is usually in an optimal power generation operation state at night, and is often forced to be separated from the power grid due to the electricity utilization conditions at the daytime peak and the night valley, which causes serious resource waste.

For the energy waste caused by the unbalanced load, there are some countermeasures, such as storing the generated electric energy by various methods in the low-ebb time, and when the peak time of the electricity consumption, extracting the stored electric energy and adding it to the power grid for use. The countermeasures include pumping energy storage, flywheel energy storage and the like, which convert redundant electric energy into mechanical energy, and when electricity is needed, the mechanical energy is converted back into electric energy.

However, since this conversion method involves conversion between electrical energy and mechanical energy, the reaction speed often cannot keep up with the demand, and the optimal reaction cannot be made in time for the change of the grid load. Meanwhile, as the system is usually in a centralized energy storage mode, when any error occurs, the whole system collapses and stops working, namely the fault-tolerant capability is low. And when the energy needs to be released, the energy is centralized, and the release amount cannot be controlled according to the actual needs of the power grid, so that great inconvenience and energy waste are brought.

Thus, the prior art is yet to be improved and enhanced.

SUMMERY OF THE UTILITY MODEL

In view of foretell through converting unnecessary electric energy into mechanical energy in the electric wire netting and store the electric energy, convert the defect of the mode of electric energy again when needs back to, the utility model provides an energy storage electrical power generating system container to the problem of concentration nature and long delay in solving current electric energy storage mode.

The technical scheme of the utility model as follows:

an energy storage power supply system container comprises a compartment body and an air flow power mechanism, wherein a truss structure is arranged in the compartment body, the rear end of the truss structure is fixed to the inner wall of the compartment body, the truss structure comprises hollow grids for placing energy storage batteries, the hollow grids are provided with battery connecting terminals, and the front end of the truss structure is provided with an air conditioner and a distribution box; at least part of the battery connecting terminals of the hollow spaces are connected to the distribution box in parallel; the top of the compartment body is provided with a lighting mechanism, the side wall of the compartment body is provided with an air channel and an air outlet which communicates the air channel with the inner space of the compartment body, and the air channel is connected to an air flow power mechanism.

In a preferred embodiment, the lighting mechanism and the air flow power mechanism are electrically connected with a battery connecting terminal in the hollow space; the battery connecting terminal in the hollow space is only electrically connected with the charging connecting terminal, the lighting mechanism and the air flow power mechanism.

In a preferred embodiment, an air outlet is provided below or above each truss structure.

In a preferred embodiment, the truss structure frame is at least partially of a hollow structure, and an air conditioner air outlet is connected with the hollow structure; the compartment body is provided with an air outlet communicated with the hollow structure.

In a preferred embodiment, a continuous supporting mechanism is arranged in the frame of the truss structure, and the supporting mechanism is provided with a mounting plate after the rear end of the truss structure extends out, and the mounting plate is fixed on the inner wall of the compartment body.

In a more preferred embodiment, the support mechanism is a U-shaped support frame.

In a more preferred embodiment, the mounting plate is provided with clips extending along the upper surface of the truss structure at a location adjacent to the upper surface of the truss structure.

In a more preferable embodiment, an insertion block extending backwards is arranged below the mounting plate, and a slot for accommodating the insertion block is arranged on the inner wall of the carriage body.

In a more preferable embodiment, the inner wall of the carriage body is provided with a clamping groove for accommodating the mounting plate.

In a preferred embodiment, the truss structure comprises at least two rows of hollow-out grids, wherein the distribution box is arranged at the end part of the truss structure corresponding to at least one row of hollow-out grids, and air conditioners are arranged at the end parts of the truss structures corresponding to other rows of hollow-out grids.

In a preferred embodiment, the hollow-out cells are arranged in n rows and m columns, the batteries in each column are serially connected to form a serial power supply, m serial power supplies are formed in total, the m serial power supplies are connected to the distribution box in parallel, n and m are natural numbers, and the natural numbers are independent and preferably 3-5.

In a preferred embodiment, an energy storage bidirectional inverter (or a bidirectional energy storage inverter, a PCS) and a battery management system are arranged in the carriage body, wherein the energy storage bidirectional inverter is electrically connected with battery connecting terminals of the hollow spaces (preferably, other hollow spaces except for hollow spaces internally used), and the bidirectional energy storage inverter is also provided with a power grid connecting terminal; the battery management system is provided with an interface for communicating with the remote monitoring system and an interface for communicating with the energy storage battery, and the bidirectional energy storage inverter is provided with an interface for communicating with the remote monitoring system.

In a preferred embodiment, the energy storage bidirectional inverter adopts a three-phase full-bridge inverter circuit; the DC side of the three-phase full-bridge inverter circuit is connected with the energy storage battery through a DC EMI filter, and the AC side is connected with a power grid connecting terminal through an LC filter, a three-phase transformer and an AC EMI filter in sequence.

In a preferred embodiment, a first dc contactor branch and a second dc contactor branch connected in parallel are arranged between the dc EMI filter and the battery connection terminals of the hollow spaces (preferably, other hollow spaces except for the hollow spaces used inside), and a dc buffer circuit is connected in series to the second dc contactor branch.

In a preferred embodiment, a first ac contactor branch and a second ac contactor branch are connected in parallel between the three-phase transformer and the ac EMI filter, and a snubber resistor is connected in series on the second ac contactor branch.

In a preferred embodiment, an ac circuit breaker is connected in series between the ac EMI filter and the grid connection terminal.

In a preferred embodiment, a lightning protection device is connected between the ac EMI filter and the grid connection terminal.

In a preferred embodiment, the energy storage bidirectional inverter comprises an outer shell, the outer shell is provided with an energy storage battery connecting terminal, and the energy storage battery connecting terminal is electrically connected with the first direct current contactor branch and the second direct current contactor branch; the power grid connection terminal is located on the surface of the shell.

In a preferred embodiment, a fan is arranged in the housing, wherein the fan can be a fan, a suction fan or a blower. The casing is equipped with air intake and air outlet, the electricity is connected between fan and the energy storage battery connecting terminal.

In a preferred embodiment, the battery management system includes a battery information acquisition device including a temperature sensor, a current and voltage monitor; the battery management system also comprises a processor, and the information acquisition device is connected with the processor and sends information to the processor; the processor is in communication connection with the remote monitoring system and the energy storage battery.

In a more preferred embodiment, the processor is connected with the human-computer interaction platform through a communication interface.

In a preferred embodiment, the current and voltage monitor comprises a voltage sampling circuit, a current sampling circuit and a current and voltage regulating unit, wherein the current sampling circuit is connected between the current and voltage regulating unit and the hollow grid battery connecting terminals in series, the voltage sampling circuit and the hollow grid battery connecting terminals are connected into the current and voltage regulating unit in parallel, and the current and voltage regulating unit comprises an adjustable resistor.

In a preferred embodiment, the voltage sampling circuit and the current sampling circuit are connected and send information to the processor. In another preferred embodiment, the voltage sampling circuit and the current sampling circuit are connected with a control chip, and the control chip is in communication connection with the processor.

In a more preferred embodiment, the current-voltage adjusting unit includes a light emitter, the adjustable resistor is a light-sensitive resistor, and the current-voltage adjusting unit further includes a PWM controller to change a magnitude of a resistance value of the light-sensitive resistor. More preferably, the processor sends instructions to the PWM controller; or the control chip is connected with and sends an instruction to the PWM controller.

In a preferred embodiment, the processor or the control chip is connected with and sends instructions to the alarm device.

The utility model discloses an energy storage electrical power generating system container places battery energy storage group through set up the truss structure in a plurality of container, can connect a plurality of energy storage battery to electric wire netting, under a remote management system's data control, it is right energy storage battery carries out the charge-discharge operation to output to the electric wire netting is adjusted according to the actual load condition in real time, and it is fast to have reaction rate, and the energy is extravagant low, and the advantage that the fault-tolerant ability is strong has greatly helped maintaining the balance of electric wire netting load.

Drawings

FIG. 1 is a schematic view of the internal structure of the container of the energy storage power supply system of the present invention;

fig. 2 is a schematic structural view of the structure of the middle truss structure mounted on the inner wall of the container carriage of the present invention;

FIG. 3 is a schematic view of the structure of the slot of the present invention;

fig. 4 is a schematic diagram of the structure of the middle truss of the present invention;

FIG. 5 is a schematic diagram of a distributed battery energy storage power system;

FIG. 6 is a schematic diagram of a medium-energy-storage bidirectional inverter according to the present invention;

fig. 7 is a schematic structural diagram of the control and monitoring system of the present invention;

in the figure: 1. the system comprises a power grid, a 2 power transmission line, a 3 communication line, a 4 energy storage bidirectional inverter, a 5 energy storage battery, a 6 remote management system, a 7 battery management system, a 8 load, a 9 carriage, a 10 lighting mechanism, an 11 air outlet, a 41 three-phase full-bridge inverter circuit, a 42 direct current EMI filter, a 43 alternating current EMI filter, a 44 LC filter, a 45 three-phase transformer, a 46 lightning arrester, a 47 circuit breaker, a 481 first direct current contactor, a 482 second direct current contactor, a 483 direct current buffer circuit, a 491 first alternating current contactor, a 492 second alternating current contactor, a 493 buffer resistor, a 40 control monitoring system, a 401 timer, a 402 signal receiving device, a 51 truss structure, a 52 cover, a 53 air conditioner, a 54 distribution box, a 55 mounting plate, a 56 hollow space, a 57 connecting head, a 550, a, Support frame, 551 inserted block, 552 clamping piece, 91 clamping groove, 92 and accommodating cavity

Detailed Description

The utility model provides a novel energy storage electrical power generating system container, for making the utility model discloses a purpose, technical scheme and effect are clearer, clear and definite, and it is right that the following reference is made to the attached drawing and the example is lifted the utility model discloses further detailed description. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In a preferred embodiment of the present invention, the energy storage power system container is configured as shown in fig. 1-5, and includes a compartment 9 and a truss structure 51 arranged in an array inside the compartment.

Referring to fig. 1, a plurality of truss structures 51 are arranged in an array, and an upper truss structure 51 and a lower truss structure 51 may be connected by a connector 57, or a spacer may be disposed between the connectors to form a gap between the upper truss structure and the lower truss structure 51. The truss structure 51 is secured at its rear end to the inner wall of the container 9.

The top 90 of the compartment 9 is provided with an illumination mechanism 10, the inner wall of the compartment 9 is provided with an air outlet 11, the periphery of each truss structure 51 can be provided with the air outlet 11, the compartment wall of the compartment 9 is provided with an air circulation pipeline, the outside of the compartment is provided with a fan, and the fan sends air into the compartment 9 through the cold air circulation pipeline or extracts hot air from the compartment 9.

Referring to fig. 4, the truss structure 51 includes hollow-out cells 56 arranged in an array, and at least one high-power lithium iron phosphate energy storage battery 5 may be placed in each hollow-out cell 56 and electrically connected to a battery connection terminal of the hollow-out cell 56. The cover plate covers the hollow space 26.

The energy storage batteries 5 are arranged in the hollow grids 56 of the truss structure 51 in N rows and M columns (M and N are both natural numbers) in an array manner. The energy storage cells 5 of each column are connected in series to form a series power supply, which together form M series power supplies, which are then connected in parallel to the distribution box 54.

Two air conditioners 53 and one electric distribution box 54 are provided at the front end of the truss structure 51. Preferably, as shown in fig. 3, two of the air conditioners 53 are symmetrically disposed outside the front end, and the electric distribution box 54 is disposed at a middle position of the end surface. The power distribution box 54, preferably comprising a high voltage power distribution box and a low voltage power distribution box, is used for supplying power to different objects in different situations.

Referring to fig. 2, a U-shaped support bracket 550 is disposed in the truss structure 51, the U-shaped support bracket 550 is disposed along the length direction of the truss structure 51, the U-shaped support bracket 550 extends out from the rear end of the truss structure 51, the extended portion is connected to the mounting plate 55, and the lower end of the mounting plate 55 is provided with an insertion block 551 protruding backwards to form an L-shaped structure. Similarly, the inner wall of the container 9 is provided with a slot 91 for embedding the L-shaped structure. The mounting plate 55 is provided with a clip 552 extending along the upper surface of the truss structure 51 to clamp the truss structure 51.

Referring to fig. 3, the locking grooves 91 are horizontally arranged along the inner wall of the container and are arranged in a plurality of rows, each truss structure 51 is fixedly provided with an accommodating cavity 92, the truss structure 51 horizontally slides to a predetermined position along the locking grooves 91, the insert block 551 is inserted into the accommodating cavity 92 of the predetermined position, and the mounting plate 55 is fixed to the inner wall of the container 9 by screws.

During the use, refer to fig. 5, electric wire netting 1 of commercial power connects each load 8 through electric power transmission line 2, and, electric power transmission line 2 still has the branch road to insert in the container 9, connects a plurality of ways of distributed battery energy storage groups in the container 9, wherein, can hold one or multichannel in every container 9 battery energy storage group, as long as guarantee safety can. The containers 9 may be one or more, for example, they may be distributed at different locations, or they may be concentrated at a certain place, or even placed underground, so as to provide great convenience for the arrangement of the whole system, especially in a dense population such as residential business districts.

In a single container 9, each battery energy storage group comprises an energy storage bidirectional inverter 4 and at least one energy storage battery 5 arranged in a hollow groove 56 of the truss structure 51, the energy storage bidirectional inverter 4(PCS, Power control system) comprises a DC/AC bidirectional converter and a control monitoring system 40, and each DC/AC bidirectional converter is connected with at least one energy storage battery 5; thereby forming a distributed battery energy storage power supply system. The energy storage batteries 5 can be connected in series and then connected in parallel. The DC/AC bidirectional converter is used for converting Alternating Current (AC) of a power grid 1 into Direct Current (DC) to charge the energy storage battery 5, and is also used for converting the DC output by the energy storage battery 5 into commercial power Alternating Current (AC) of the power grid 1 according to the requirement of the power grid 1 when a load 8 is overlarge so as to supplement the power grid 1.

One of the hollow spaces 56 is a hollow space for internal use, specially supplies power to the illuminating mechanism 10 and the fan, and separates the power consumption of the illuminating mechanism 10 and the fan from other distributed battery energy storage sets in terms of functions and power supply.

The control and monitoring system 40, as shown in fig. 7, includes a timer 401 and a signal receiving device 402, wherein the signal receiving device 412 is directly connected to the power grid 1 and receives data transmitted from a remote management system 6 via a communication line 3, and the data includes instructions for controlling the operation of the energy storage battery 5 and instructions for controlling the operation of the timer 401.

The utility model provides a distributed battery energy storage electrical power generating system is carried to container, when the operation, remote management system 6, general setting is deposited in power supply department, according to the current load condition of electric wire netting 1, sends data extremely through communication line 3 signal reception device 402, signal reception device 402 translation discernment is received after the data, according to the instruction of data, control energy storage battery 5 work, or the energy storage that charges, or the energy supply that discharges. Meanwhile, in consideration of the electricity utilization condition of the power grid 1 during daytime, peak and night, the remote management system 6 may also send corresponding control data to the timer 401 through the communication line 3, and set the default working time of the timer 401, so as to realize that the energy storage battery 5 automatically performs charging and discharging operations according to the time every day. Of course, the default operating time set is changeable by a new setting transmitted from the remote management system 6. To further provide flexibility and flexibility of the overall container-borne distributed battery energy storage power system.

In the utility model discloses a better embodiment, every between energy storage bidirectional inverter 4 and the energy storage battery 5 that connects, still be equipped with a battery management system 7, through communication line 3 with energy storage battery 5 exchanges data to manage and monitor every energy storage battery 5's behavior. Of course, the battery management system 7 may also be configured to exchange data with each energy storage battery 5 by wireless transmission. Therefore, the problem battery can be found in time for replacement and maintenance. The battery management system 7 may also communicate with the remote management system 6.

Referring to fig. 6, in one embodiment, the DC/AC bidirectional converter includes a three-phase full-bridge inverter circuit 41, a DC EMI filter 42 connected to a DC side of the three-phase full-bridge inverter circuit 41, and an AC EMI filter 43 connected to an AC side of the three-phase full-bridge inverter circuit 41, the DC EMI filter 42 being electrically connected to the energy storage battery connection terminal, and the AC EMI filter 43 being electrically connected to the grid connection terminal.

The first dc contactor 481 and the second dc contactor 482 are connected in parallel between the dc EMI filter 42 and the connection terminal of the energy storage battery, and the dc buffer circuit 483 is connected in series to a branch of the second dc contactor 482.

A circuit breaker 47 is connected in series between the ac EMI filter 43 and the grid connection terminal, and a branch is connected between the grid connection terminal and the circuit breaker 47, and a lightning arrester 46 is connected to the branch. An LC filter 44 and a three-phase transformer 45 are connected in series between the three-phase full-bridge inverter circuit 41 and the ac EMI filter 43 in sequence. A first ac contactor 491 and a second ac contactor 492 are connected in parallel between the three-phase transformer 45 and the ac EMI filter 43, and an ac snubber resistor 493 is connected in series to a branch of the second ac contactor 492.

The present invention has been described in detail with reference to the specific embodiments, but the present invention is only by way of example and is not limited to the specific embodiments described above. Any equivalent modifications and substitutions to those skilled in the art are intended to be within the scope of the present invention. Accordingly, variations and modifications in equivalents may be made without departing from the spirit and scope of the invention, which is intended to be covered by the following claims.

Claims

1. An energy storage power supply system container is characterized by comprising a container body and an air flow power mechanism, wherein a truss structure is arranged in the container body, the rear end of the truss structure is fixed to the inner wall of the container body, the truss structure comprises hollow grids for placing energy storage batteries, the hollow grids are provided with battery connecting terminals, and the front end of the truss structure is provided with an air conditioner and a distribution box; at least part of the battery connecting terminals of the hollow spaces are connected to the distribution box in parallel;

the top of the compartment body is provided with a lighting mechanism, the side wall of the compartment body is provided with an air channel and an air outlet which connects the air channel with the inner space of the compartment body, and the air channel is connected to an air flow power mechanism;

the lighting mechanism and the air flow power mechanism are electrically connected with a battery connecting terminal in the hollow space; the battery connecting terminal in the hollow space is only electrically connected with the charging connecting terminal, the lighting mechanism and the air flow power mechanism; at least part of the truss structure frame is of a hollow structure, and an air outlet of the air conditioner is connected with the hollow structure; the compartment body is provided with an air outlet communicated with the hollow structure.

2. The container of claim 1, wherein the frame of the truss structure has a continuous support mechanism disposed therein, the support mechanism having a mounting plate disposed at a rear end of the truss structure, the mounting plate being fixed to an inner wall of the compartment.

3. The energy storage power system container of claim 2, wherein the mounting plate is provided with a clip extending along the upper surface of the truss structure at a position abutting the upper surface of the truss structure; an insertion block extending backwards is arranged below the mounting plate, and a slot for accommodating the insertion block is formed in the inner wall of the carriage body; the inner wall of the carriage body is provided with a clamping groove for accommodating the mounting plate.

4. The energy storage power system container as claimed in claim 1, wherein an energy storage bidirectional inverter and a battery management system are arranged in the container body, wherein the energy storage bidirectional inverter is electrically connected with the battery connection terminal of the hollow space, and the energy storage bidirectional inverter is further provided with a power grid connection terminal; the battery management system is provided with an interface for communicating with the remote monitoring system and an interface for communicating with the energy storage battery, and the energy storage bidirectional inverter is provided with an interface for communicating with the remote monitoring system.

5. The energy storage power system container as claimed in claim 4, wherein the energy storage bidirectional inverter adopts a three-phase full-bridge inverter circuit; the DC side of the three-phase full-bridge inverter circuit is connected with the energy storage battery through a DC EMI filter, and the AC side is connected with a power grid connecting terminal through an LC filter, a three-phase transformer and an AC EMI filter in sequence.

6. The energy storage power supply system container as claimed in claim 5, wherein a first dc contactor branch and a second dc contactor branch are provided in parallel between the dc EMI filter and the energy storage battery, and a dc buffer circuit is connected in series to the second dc contactor branch; a first alternating current contactor branch and a second alternating current contactor branch are connected in parallel between the three-phase transformer and the alternating current EMI filter, and a buffer resistor is connected in series on the second alternating current contactor branch.

7. The energy storage power system container of claim 4, wherein the battery management system comprises a battery information collection device comprising a temperature sensor, a current and voltage monitor; the battery management system also comprises a processor, and the information acquisition device is connected with the processor and sends information to the processor; the processor is in communication connection with the remote monitoring system and the energy storage battery.

8. The energy storage power system container as claimed in claim 7, wherein the current and voltage monitor comprises a voltage sampling circuit, a current and voltage regulating unit, the current sampling circuit is connected in series between the current and voltage regulating unit and the connection point of the cathode and the anode of the battery, the voltage sampling circuit is connected in parallel with the connection point of the cathode and the anode of the battery into the current and voltage regulating unit, and the current and voltage regulating unit comprises an adjustable resistor; the current and voltage regulating unit comprises a light emitter, the adjustable resistor is a photoresistor, and the current and voltage regulating unit further comprises a PWM (pulse width modulation) controller for changing the resistance value of the photoresistor.