CN211018411U - Movable low-voltage energy storage device - Google Patents

Abstract

The utility model relates to an energy storage technology field, concretely relates to portable low pressure energy memory, including energy storage ware, connector lug and removal carrier, the energy storage ware is placed on removing the carrier, and the energy storage ware passes through the connector lug and is connected with the distribution generating line, the energy storage ware includes box, a plurality of plywood, a plurality of battery BT, a plurality of PCS unit, PCS control unit and a plurality of inductance L, and battery BT is connected with the PCS unit, and the output one end of a plurality of PCS unit is through inductance L interconnect, and the output other end interconnect of a plurality of PCS unit, two interconnect ends of a plurality of PCS unit respectively with distribution generating line L line and N line connection.

Description

Movable low-voltage energy storage device

Technical Field

The utility model relates to an energy storage technology field, concretely relates to portable low pressure energy memory.

Background

In rural power supply, due to the fact that busy seasons are relatively fixed and concentrated every year, a transformer area is often in an overload operation state in the busy seasons. Because the agricultural production activities are very similar, the daily electricity utilization peak periods of the users are also concentrated in a range of hours, so that the daily load is very unbalanced. Due to the stage of the agricultural production activity, the electricity utilization level of rural users can be reduced to a lower level after the production activity is finished. For example, in the tea frying season of Anji county, the area is often overloaded by more than 20%, but the overloaded operation is usually not more than 2 hours each time. Under the condition, the expansion investment cost of the transformer area is too high relative to the income, so that the construction and operation of mobile energy storage equipment in the transformer area are needed, and the safe and stable operation of the transformer area in the tea frying season is ensured. However, the existing energy storage equipment needs to convert alternating current into direct current for storage and then convert the direct current into alternating current for output, and the technical problem of low energy conversion efficiency exists.

Like chinese patent CN109067195A, published 2018, 12 and 21, a power electronic transformer with an energy storage device relates to the technical field of electrical engineering, and comprises: the high-voltage side of the power electronic transformer is connected with a 10kV power distribution network, the low-voltage side of the power electronic transformer is connected with a 400V-grade power distribution network, three-phase 10kV alternating-current voltage is subjected to voltage division and isolation conversion through an A-phase circuit, a B-phase circuit and a C-phase circuit, high-voltage alternating current is converted into direct current and is connected with direct-current buses P and N, and the direct-current buses P and N are electrically connected with an energy-storage type Quasi-Z source inverter to convert the direct current into the three-phase 400V. The power electronic transformer reduces the number of high-frequency transformers and sub-modules, improves the power density of the power electronic transformer, and can effectively inhibit harmonic waves brought to a superior power distribution network by the power electronic transformer. But it cannot solve the technical problem of low energy conversion efficiency.

Disclosure of Invention

The to-be-solved technical problem of the utility model is: the technical problem of short-term overload operation exists in part of the current transformer area. A mobile low-voltage energy storage device is provided, wherein the energy storage device is put into the energy storage device in a staged manner to reduce the load of a platform area.

In order to solve the technical problem, the technical scheme of the utility model is that a portable low pressure energy storage device, including energy storage ware, connector lug and removal carrier, the energy storage ware is placed on removing the carrier, and the energy storage ware passes through the connector lug and is connected with the distribution bus, the energy storage ware includes box, a plurality of plywood, a plurality of battery BT, a plurality of PCS unit, PCS control unit and a plurality of inductance L, and a plurality of plywood separates the box inner space into a plurality of layers along the vertical direction, a plurality of battery BT is fixed to be set up on the plywood, and battery BT is connected with the PCS unit, and the output one end of a plurality of PCS unit passes through inductance L interconnect, and the output other end of a plurality of PCS unit interconnects, and two interconnect of a plurality of PCS unit respectively with distribution bus L line and N line connection, and a plurality of PCS unit all is connected with the PCS control unit, directly carry out AC/DC two-way conversion through the PCS unit, improve energy conversion efficiency.

Preferably, the storage battery BT comprises a box body, a box cover, a positive terminal, a plurality of positive plates, a positive connecting wire, a negative terminal, a plurality of negative plates, a negative connecting wire, a safety valve, a plurality of porous partition plates, acid liquor and a plurality of silicon partition plates, wherein the box body is divided into a plurality of single lattices by the silicon partition plates with an opening on the top surface, the plurality of positive plates, the plurality of porous partition plates and the plurality of negative plates are arranged in the single lattices, the positive plates and the negative plates are arranged alternately, the porous partition plates are arranged between the positive plates and the negative plates, the acid liquor is fully soaked in the porous partition plates, the plurality of positive plates are connected with the positive terminal through the positive connecting wire, the plurality of negative plates are connected with the negative terminal through the negative connecting wire, the box cover is detachably arranged at the top of the box body, and the positive terminal and, the silicon partition plate penetrates through the box cover and is connected with the box cover in a sealing mode, and the safety valve is installed on the box cover. The storage battery with the porous partition plate is adopted, so that the transportation of the energy accumulator is facilitated, and the maintenance work of the energy accumulator is reduced.

Preferably, the storage battery BT further comprises a plurality of heat dissipation silicon plates, the heat dissipation silicon plates are tightly attached to the silicon partition plates and fixedly connected with the silicon partition plates, and the heat dissipation silicon plates are provided with grid-shaped branches. Silicon has good heat conductivity, insulating property and chemical stability, and the silicon baffle can in time derive the heat of acidizing fluid to dispel the heat through the heat dissipation silicon board, improve the stability and the security of battery BT work.

Preferably, the energy storage device further comprises a temperature sensor, the storage battery BT further comprises silicon strips, the silicon partition plates are connected with each other through the silicon strips, the temperature sensor is abutted to the silicon strips and used for detecting the temperature of the silicon strips, and the temperature sensor is connected with the PCS control unit. The overheated storage battery can be found in time and replaced in time through temperature detection, and the service life and the operational reliability of the energy accumulator are prolonged.

As preferred, the accumulator still includes passive fire extinguisher, and passive fire extinguisher is installed in the box, passive fire extinguisher includes a jar body, inflation valve, metal stopper, a plurality of jack catch and paraffin piece, and the inflation valve is installed in jar body bottom, and the internal high pressure fire extinguishing gas that fills of jar, the opening of jar body is filled in to the metal stopper, scribbles airtight filler between metal stopper and the jar body, and jar body is stretched out to metal stopper one end, and the one end processing that the metal stopper is located jar body has a plurality of slot, a plurality of jack catch one end and slot bottom fixed connection, jack catch side and slot side butt, the jack catch other end and jar body butt, and the part that the jack catch is close to the slot has elasticity, the paraffin. Can delay or put out the condition of a fire when the condition of a fire takes place at the energy storage through passive fire extinguisher, improve the security and the job stabilization nature of energy storage, reduce the accident loss. The high pressure fire suppressing gas may be high pressure carbon dioxide or high pressure nitrogen.

Preferably, the part of the metal plug of the passive fire extinguisher, which is exposed out of the tank body, is provided with a plurality of radiating fins which are uniformly distributed along the circumference of the metal plug. The heat dissipation fins can accelerate the heat in the air to be conducted to the paraffin block, the paraffin block is accelerated to be softened, the passive fire extinguisher is triggered earlier, and the fire is extinguished in time.

Preferably, passive fire extinguisher still includes the clamp plate, it has the sieve mesh to distribute on the clamp plate, clamp plate fixed mounting stretches into the one end of jar body at the metal stopper, the clamp plate is pressed and is covered on the paraffin piece, and the one side that the elasticity jack catch is close to paraffin extends there is the arch, the arch extends into the clamp plate below. The sieve mesh has blockked the flow of the wax piece that softens, can adjust the chance that the wax piece softens and flows through the sieve mesh size, can adjust the pressure that the wax piece can bear under the normal atmospheric temperature through adjusting the sieve mesh size, and the difficult and easy degree that the wax piece softens and gives back.

Preferably, a plurality of fins are arranged on the position, close to the metal plug, of the tank body of the passive fire extinguisher and are uniformly distributed along the circumference of the tank body. The fin can accelerate the heat conduction in the air to the jar body, and then gives the paraffin block by jar body conduction for the paraffin block softens, makes earlier being triggered of passive fire extinguisher, in time puts out a fire.

Preferably, the side surface of the box body is provided with a plurality of vent holes. The ventilation holes can accelerate the heat dissipation of the storage battery BT.

The utility model discloses a substantive effect is: through the direct AC/DC bidirectional conversion that carries on of PCS unit, improve energy conversion efficiency, through adopting the battery that has porous baffle, make things convenient for the transportation of accumulator, reduce the maintenance work of accumulator, can in time discover overheated battery and in time change through temperature detection, the life-span and the operational reliability of extension accumulator, can delay or put out the condition of a fire when the condition of a fire takes place at the accumulator through passive fire extinguisher, improve the security and the job stabilization nature of accumulator, reduce the accident loss.

Drawings

Fig. 1 is a schematic structural diagram of a low-voltage energy storage device according to an embodiment.

Fig. 2 is a schematic diagram of an embodiment of an energy storage circuit.

Fig. 3 is a schematic diagram of an energy storage device according to an embodiment.

Fig. 4 is a schematic structural diagram of a battery BT according to an embodiment.

FIG. 5 is a schematic diagram of the end face structure of a battery BT according to an embodiment.

Fig. 6 is a schematic structural view of a passive fire extinguisher according to the second embodiment.

FIG. 7 is a schematic sectional view of a passive fire extinguisher according to a second embodiment.

Wherein: 1. a sealed lead-acid storage battery comprises a sealed lead-acid storage battery body, 2, laminates, 3, a box body, 4, vent holes, 5, a box cover, 6, a positive terminal, 7, a positive connecting wire, 8, a positive plate, 9, a box body, 10, a temperature sensor, 11, a silicon strip, 12, a silicon partition plate, 13, a safety valve, 14, a heat dissipation silicon plate, 15, a negative terminal, 16, a negative connecting wire, 17, a negative plate, 18, a porous partition plate, 100, an energy accumulator, 101, a PCS control unit, 102, a PCS unit, 200, a connector lug, 300, a mobile carrier, 400, a passive fire extinguisher, 401, an inflation valve, 402, a tank body, 403, a heat dissipation fin, 404, a metal plug, 405, a claw, 406, a pressure plate, 407, a protrusion, 408.

Detailed Description

The following provides a more detailed description of the present invention, with reference to the accompanying drawings.

The first embodiment is as follows:

a low-voltage energy storage device is disclosed, as shown in FIG. 1, the embodiment includes an energy storage device 100 and a connector 200, the energy storage device 100 is connected with a distribution bus through the connector 200, the energy storage device 100 is placed on a mobile carrier 300, the mobile carrier 300 is a vehicle or a trailer, the energy storage device 100 includes a box body 3, a plurality of laminates 2, a plurality of storage batteries BT, a plurality of PCS units 102, a plurality of inductors L, a plurality of voltage meters, a communication module, a memory and a PCS control unit 101, as shown in FIG. 3, the plurality of laminates 2 divide the inner space of the box body 3 into a plurality of layers along the vertical direction, the plurality of storage batteries BT are fixedly arranged on the laminates 2, as shown in FIG. 2, the storage batteries BT are connected with the PCS units 102, one end of the output ends of the plurality of PCS units 102 are connected with each other through an inductor L, the other ends of the output ends of the plurality of PCS units 102 are connected with each other, two ends of the plurality of PCS units 102 are respectively connected with the distribution bus L line and the N line, the plurality of PCS units 102 monitor the voltages at two ends of one storage battery BT, and the two ends of the PCS units 102 are.

As shown in fig. 4 and 5, the battery BT is a sealed lead-acid battery 1, the sealed lead-acid battery 1 includes a box body 9, a box cover 5, a positive terminal 6, a plurality of positive plates 8, a positive connecting wire 7, a negative terminal 15, a plurality of negative plates 17, a negative connecting wire 16, a safety valve 13, a plurality of porous separators 18, an acid solution and a plurality of silicon separators 12, the top surface of the box body 9 is open, the box body 9 is divided into a plurality of single cells by the plurality of silicon separators 12, the single cells are internally provided with the plurality of positive plates 8, the plurality of porous separators 18 and the plurality of negative plates 17, the positive plates 8 and the negative plates 17 are arranged alternately, the porous separators 18 are arranged between the positive plates 8 and the negative plates 17, the acid solution is filled in the porous separators 18, the plurality of positive plates 8 are all connected with the positive terminal 6 through the positive connecting wire 7, the plurality, the box cover 5 is detachably arranged at the top of the box body 9, the positive terminal 6 and the negative terminal 15 penetrate and are fixed on the box cover 5, the silicon partition plate 12 penetrates through the box cover 5 and is in sealing connection with the box cover 5, and the safety valve 13 is arranged on the box cover 5. By employing a battery having a porous separator 18, transportation of the energy storage device 100 is facilitated, reducing maintenance work on the energy storage device 100.

The battery BT also comprises a plurality of heat dissipation silicon plates 14, the heat dissipation silicon plates 14 are tightly attached to the silicon partition plates 12 and fixedly connected with the silicon partition plates 12, and the heat dissipation silicon plates 14 are provided with grid-shaped branches. Silicon has good thermal conductivity, insulating property and chemical stability, and the silicon baffle 12 can in time derive the heat of acidizing fluid to dispel the heat through heat dissipation silicon board 14, improve the stability and the security of battery BT work.

The energy accumulator 100 further comprises a temperature sensor 10, the storage battery BT further comprises a silicon strip 11, the silicon partition plates 12 are connected with each other through the silicon strip 11, the temperature sensor 10 is abutted to the silicon strip 11, the temperature sensor 10 detects the temperature of the silicon strip 11, and the temperature sensor 10 is connected with the PCS control unit 101. The overheated storage battery can be found in time and replaced in time through temperature detection, and the service life and the working reliability of the energy accumulator 100 are prolonged.

The side of the box body 3 is provided with a plurality of ventilation holes 4. The vent hole 4 can accelerate heat dissipation of the battery BT.

Example two:

in this embodiment, on the basis of the first embodiment, the safety of the energy storage device 100 is further improved, and in this embodiment, the energy storage device 100 further includes a passive fire extinguisher 400, the passive fire extinguisher 400 is installed in the box 3, as shown in fig. 6 and 7, the passive fire extinguisher 400 includes a tank 402, an inflation valve 401, a metal plug 404, a plurality of jaws 405 and a paraffin block 408, the inflation valve 401 is installed at the bottom of the tank 402, the tank 402 is filled with high-pressure fire extinguishing gas, the metal plug 404 is plugged into an opening of the tank 402, an airtight filler is coated between the metal plug 404 and the tank 402, one end of the metal plug 404 extends out of the tank 402, one end of the metal plug 404 located in the tank 402 is processed with a plurality of grooves, one end of the plurality of jaws 405 is fixedly connected with the bottoms of the grooves, the side surfaces of the jaws 405 abut against the side surfaces of the grooves, the other end of the, paraffin block 408 fills the trench.

The passive fire extinguisher 400 further comprises a pressing plate 406, sieve holes are distributed on the pressing plate 406, the pressing plate 406 is fixedly installed at one end, extending into the tank body 402, of the metal plug 404, the pressing plate 406 is pressed on the paraffin block 408, a protrusion 407 extends from one side, close to the paraffin, of the elastic claw 405, and the protrusion 407 extends into the lower portion of the pressing plate 406. The part of the metal plug 404 of the passive fire extinguisher 400 exposed out of the tank body 402 is provided with a plurality of radiating fins 403, and the plurality of radiating fins 403 are uniformly distributed along the circumference of the metal plug 404. The tank 402 of the passive fire extinguisher 400 is provided with a plurality of fins near the metal plug 404, and the plurality of fins are evenly distributed along the circumference of the tank 402. The rest of the structure is the same as the first embodiment.

Compared with the first embodiment, the present embodiment has the following beneficial effects: the passive fire extinguisher 400 can delay or extinguish the fire when the energy accumulator 100 is in fire, thereby improving the safety and working stability of the energy accumulator 100 and reducing the accident loss. The high pressure fire suppressing gas may be high pressure carbon dioxide or high pressure nitrogen. The heat dissipation fins 403 can accelerate the heat in the air to be conducted to the paraffin block 408, accelerate the paraffin block 408 to be softened, and enable the passive fire extinguisher 400 to be triggered earlier to extinguish the fire in time. The sieve mesh has stopped the flow of the wax piece 408 that softens, can adjust the time that the wax piece 408 softens and flows through the sieve mesh size, can adjust the pressure that the wax piece 408 can bear under the normal atmospheric temperature through adjusting the sieve mesh size, and the difficult degree that the wax piece 408 softens and gives up.

The above-described embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and other variations and modifications may be made without departing from the scope of the claims.

Claims (9)

1. A mobile low-voltage energy storage device comprises a PCS control unit,

comprises an energy accumulator, a connector lug and a mobile carrier, wherein the energy accumulator is arranged on the mobile carrier and is connected with a distribution bus through the connector lug,

the energy storage includes box, a plurality of plywood, a plurality of battery BT, a plurality of PCS unit and a plurality of inductance L, and a plurality of plywood separates the box inner space for a plurality of layers, a plurality of along the vertical direction battery BT is fixed to be set up on the plywood, and battery BT is connected with the PCS unit, and inductance L interconnect is passed through to the output one end of a plurality of PCS unit, and the output other end interconnect of a plurality of PCS unit, two interconnect of a plurality of PCS unit respectively with distribution bus L line and N line connection, a plurality of PCS unit all is connected with the PCS control unit.

2. The mobile low pressure energy storage device of claim 1,

the storage battery BT comprises a box body, a box cover, a positive terminal, a plurality of positive plates, a positive connecting wire, a negative terminal, a plurality of negative plates, a negative connecting wire, a safety valve, a plurality of porous partition plates, acid liquor and a plurality of silicon partition plates, wherein the top surface of the box body is open, the box body is divided into a plurality of single cells by the plurality of silicon partition plates, the plurality of positive plates, the plurality of porous partition plates and the plurality of negative plates are arranged in the single cells, the positive plates and the negative plates are arranged alternately, the porous partition plates are arranged between the positive plates and the negative plates, the acid liquor is fully soaked in the porous partition plates, the plurality of positive plates are all connected with the positive terminal through the positive connecting wire, the plurality of negative plates are all connected with the negative terminal through the negative connecting wire, the box cover is detachably installed at the top of the, the silicon partition plate penetrates through the box cover and is connected with the box cover in a sealing mode, and the safety valve is installed on the box cover.

3. The mobile low pressure energy storage device of claim 2,

the storage battery BT also comprises a plurality of heat dissipation silicon plates, wherein the heat dissipation silicon plates are tightly attached to the silicon partition plates and fixedly connected with the silicon partition plates, and the heat dissipation silicon plates are provided with grid-shaped branches.

4. A mobile low pressure energy storage device according to claim 2 or 3,

the energy storage still includes temperature sensor, battery BT still includes silicon strip, a plurality of silicon baffle passes through silicon strip interconnect, temperature sensor with silicon strip butt, temperature sensor detect silicon strip temperature, and temperature sensor is connected with PCS control unit.

5. A mobile low pressure energy storage device according to claim 2 or 3,

the accumulator still includes passive fire extinguisher, and passive fire extinguisher installs in the box, passive fire extinguisher includes a jar body, inflation valve, metal stopper, a plurality of jack catch and paraffin piece, and the inflation valve is installed in jar body bottom, and the opening of jar body is filled in to the metal stopper, scribbles airtight filler between metal stopper and the jar body, and jar body is stretched out to metal stopper one end, and the one end processing that the metal stopper is located jar body has a plurality of slot, a plurality of jack catch one end and slot bottom fixed connection, jack catch side and slot side butt, the jack catch other end and jar body butt, and the part that the jack catch is close to the slot has elasticity, the paraffin piece is filled the slot.

6. The mobile low pressure energy storage device of claim 5,

the part of the metal plug of the passive fire extinguisher, which is exposed out of the tank body, is provided with a plurality of radiating fins which are uniformly distributed along the circumference of the metal plug.

7. The mobile low pressure energy storage device of claim 5,

a plurality of fins are arranged on the position, close to the metal plug, of the tank body of the passive fire extinguisher and are uniformly distributed along the circumference of the tank body.

8. The mobile low-voltage energy storage device according to claim 1 or 2,

and a plurality of vent holes are formed in the side surface of the box body.

9. The mobile low-voltage energy storage device according to claim 1 or 2,

the mobile carrier is a trailer.

Images