CN217589290U - High-capacity battery energy storage system - Google Patents

Abstract

The application discloses a high-capacity battery energy storage system, which comprises a battery frame, wherein the battery frame comprises two push-insert frames and is characterized in that a plurality of obliquely arranged frame plates are arranged in the push-insert frames, and the frame plates are arranged in the push-insert frames in a multi-layer mode along the height direction to form an installation layer for a plurality of batteries to be installed; the batteries in the two inserting frames are arranged in a mirror image mode, and the positive electrodes/negative electrodes of the batteries are connected in series through positive/negative connectors; the connector is connected with an adaptive connector of the energy storage system; the battery embedding direction in the push-insert frame is consistent. This application is from the inside thermal balance management of solving of battery, and inside and outside simultaneous control fire control potential safety hazard is equipped with safe cooling adsorption reaction under the extreme condition, and collection device combines to survey the outage system and has improved box energy storage system's security greatly, has stopped combustible gas and has discharged the explosion hidden danger that air and air mixing caused.

Description

High-capacity battery energy storage system

Technical Field

The application relates to the field of lithium battery energy storage, in particular to a high-capacity battery energy storage system.

Background

The clean energy comprises non-fossil energy such as wind energy, light energy, water energy, biomass energy, geothermal energy and the like. However, at present, the stability of the energy is not enough, and under the conditions that the flexibility of the current power system is not enough and the regulation capability is not enough, the development of the energy storage technology becomes a key factor for judging whether the renewable clean energy can burst in the future.

China is formally in the large-scale development stage of energy storage application, and the energy storage application is taken as the key working field in decades in the future. The current energy storage system field all adopts the lithium iron phosphate battery as energy storage component, and although the lithium iron phosphate battery monomer is capacious, lithium iron phosphate battery monomer voltage is lower, for satisfying the converter demand, need establish ties the battery in order to promote input voltage, and the general way is directly to establish ties the battery monomer to the voltage that needs to promote. However, due to the technical problems of various connecting lines, complex system, fire safety, temperature control management and the like, safety accidents frequently occur. With the vigorous promotion and application of energy storage systems in China, the requirements on the energy density and the power density of the battery boxes of the energy storage systems are continuously improved, and the number of the battery boxes is increased more and more. The energy storage system generally includes a battery module formed by a certain number of battery cells, a battery box formed by a certain number of battery modules, and an energy storage system formed by stacking a certain number of battery boxes.

Current energy storage system is mostly the container formula, sets up a plurality of units in the container, including a plurality of battery cabinets, sets up the battery box accommodation space with the array form in the battery cabinet, is used for the battery box of packing into in the battery box accommodation space, and current container energy storage system has battery density little, and life is short, and the space is nervous, a series of problems such as dismouting maintenance inconvenience.

CN112768820A discloses a container energy storage system, which comprises a container and a battery inserting box; the battery subrack includes: the battery rack is arranged in a plurality of layers in the vertical direction to form a module mounting layer which is stacked up and down, and the battery modules are loaded in the module mounting layer in a layered manner; the walking wheel is arranged at the bottom of the battery rack and is used for moving the battery inserting box. But push away with this patent battery and insert a structure difference, and this patent large capacity battery is from taking the heat dissipation, and fire control heat conduction device has obvious advantage in safe and reliable, the aspect of battery life.

CN105129269A discloses an energy storage battery cabinet. However, the battery boxes in the existing energy storage system are stacked up and down, a fire-fighting safety system is absent, the cabinet body is not provided with moving wheels, the battery cabinet needs to move by using a moving vehicle, a large space is needed for battery box insertion operation in practical application, the space utilization efficiency is low, the energy density of the energy storage system is influenced, and more operators are needed for assembling and disassembling the battery modules, so that the energy storage system is inconvenient to disassemble and maintain.

CN211530802U, CN110797489a and CN212751901U mention container energy storage system structure, but are different from the arrangement of this patent. The unique embedding mode of the large capacity of this patent, positive negative pole connector and battery bypass contactor design, the parallelly connected pipeline of pressure release mouth of battery inserts cooling adsorption reaction warning collector, handles the gas of battery thermal runaway pressure release, and independent big battery itself has the fire control heat dissipation function simultaneously, does not influence other big batteries under the extreme condition, has wholly improved container energy storage system's security.

Disclosure of Invention

In order to solve the technical problem, the technical scheme adopted by the application is as follows:

the application provides a high-capacity battery energy storage system which comprises a battery rack, wherein the battery rack comprises two push-insert racks, a plurality of obliquely arranged rack plates are arranged in the push-insert racks, and the rack plates are arranged in the push-insert racks in a multi-layer mode along the height direction to form an installation layer for a plurality of batteries to be installed; the batteries in the two inserting frames are arranged in a mirror image mode, and the positive electrodes/negative electrodes of the batteries are connected in series through positive/negative connectors; the connector is connected with an adaptive connector of the energy storage system; the battery embedding direction in the push-insert frame is consistent. The inclination angle of the frame plate is 20 degrees.

Further, the battery comprises a shell, a battery pack arranged in the shell and a heat exchange device; the heat exchange device comprises a semiconductor module arranged on the outer side of the upper cover plate of the shell and two identical heat dissipation assemblies arranged in the shell, and the condensation ends of the heat dissipation assemblies extend out of the upper cover plate of the shell to be connected with the semiconductor module. The heat dissipation assembly comprises a conductive bar connected with the positive electrode/negative electrode of the battery pack in the battery shell, a hollow pole column connected with the conductive bar and provided with an outer wall groove, and a heat conduction fire extinguishing pipe arranged in the outer wall groove. The heat conduction fire extinguishing pipe is filled with heat conduction fire extinguishing materials, and when the temperature of the battery rises, the heat conduction fire extinguishing materials in the heat conduction fire extinguishing pipe flow out from the closed end to inhibit the explosion of the battery.

Furthermore, an anti-skid insulating pad for fixing the battery is arranged between the frame plate and the battery.

Further, the cooling adsorption cavity is arranged at the bottom layer of the battery rack; the explosion venting port of the upper cover plate of the battery is connected with the cooling adsorption cavity through a collecting pipe, and the cooling adsorption cavity is filled with a cooling adsorption material and a reaction material;

the adsorption material and the reaction material in the adsorption reaction cavity can be mixed and filled, or layered and filled. The cooling adsorption material is one or more of ceramic, activated carbon, molecular sieve, activated alumina, silica gel and white carbon black. The reaction material is one or more of acid, alkali, strong base and weak acid salt. The cooling adsorption cavity comprises a collecting bag used for collecting the excessive flammable and combustible harmful gases of the battery. The collecting bag is made of aluminum plastic or PVC or TPU. And a fire extinguishing device is arranged in the cooling adsorption cavity. The fire extinguishing device is a small self-induction thermal aerosol fire extinguishing device; when the temperature reaches the preset value, the fire extinguishing device is automatically started, the nanometer fire extinguishing particles are released to dilute and inhibit the combustion of combustible gas, and the high-temperature combustible gas generated due to thermal runaway is prevented from overflowing from the collecting bag and contacting air, so that the whole energy storage system is further damaged. A sensing alarm for detecting the flowing electrolyte and gas is arranged at the inlet of the cooling adsorption cavity; the sensing alarm is connected with the energy storage system BMS, and the BMS controls the circuit of the power supply system to jump or cut off.

Further, the connector is one or a combination of a plurality of extrusion-molded aluminum ingots, aluminum pole extension pieces, aluminum gasket rows, copper flexible rows and copper cables.

Further, an insulating cover for covering the energy storage system is included. The insulating cover is made of one or a combination of PVC, PP, PS, POM, PMMA, PBT, PC and ABS.

Furthermore, the bottom of the battery rack is provided with at least four universal wheels with locking functions.

Furthermore, each 5 battery racks is an energy storage unit, bypass contactors are respectively arranged at the incoming end and the outgoing end of a circuit of the energy storage unit, and the two bypass contactors are connected in parallel; and after the BMS of the battery receives the signal of the sensing alarm, the energy storage unit with the problem is judged, and the energy storage unit is shielded by the bypass contactor.

The large-capacity battery system is ingenious in connection design, reasonable in arrangement, capable of saving container space and convenient to overhaul. From the inside thermal balance management of solving of battery, inside and outside simultaneous control fire control potential safety hazard is equipped with under the extreme condition safe cooling adsorption reaction, and collection device combines to survey the outage system and has improved box energy storage system's security greatly, has stopped combustible gas and has discharged the explosion hidden danger that air and air mix caused.

Additional advantages, objects, and features of the application will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the application.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a drawing of a push-insertion frame with a battery according to an embodiment of the present application.

FIG. 2 is a diagram of a cooled adsorption reaction collector according to an example of the present application.

Fig. 3 is a diagram of a large-capacity battery according to an embodiment of the present application.

Fig. 4 shows an internal structure of a large-capacity battery according to an embodiment of the present invention.

Fig. 5 shows a first connector structure according to an embodiment of the present application.

Fig. 6 shows a second connector structure according to an embodiment of the present application.

Detailed Description

The present application will now be described in further detail with reference to the accompanying drawings, whereby one skilled in the art can, with reference to the description, make an implementation.

It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.

The technical solution of the present invention is explained in detail by the accompanying drawings and the specific embodiments.

The application provides a high-capacity battery energy storage system, which comprises a battery rack, wherein the battery rack comprises two push-insert racks 2, a plurality of obliquely arranged frame plates 21 are arranged in the push-insert racks 2, and the frame plates 21 are arranged in the push-insert racks 2 in a multi-layer manner along the height direction to form an installation layer for a plurality of batteries 1 to be installed; the batteries in the two inserting frames 2 are arranged in a mirror image mode, and the positive/negative poles of the batteries are connected in series through positive/negative connectors 24; the connector 24 is connected with an adaptive connector of the energy storage system; the inserting direction of the batteries 1 in the inserting frame 2 is consistent.

Further, in the embodiment provided in the present application, the inclined angle of the shelf 21 is 20 degrees.

For example, the high-capacity battery is 3.2V,3000Ah, 224 high-capacity batteries are connected in series to form a 700V energy storage system, two adjacent pushing and inserting frames are 1 group, 8 layers of partition plates are arranged in each vertical column of the battery pushing and inserting frames, 16 high-capacity batteries are embedded in the battery pushing and inserting frames, and the system needs 14 high-capacity battery pushing and inserting frames.

The inside of the push-insert frame is provided with a frame plate 21 with an inclination angle of 20 degrees, the battery frame plates 21 are arranged in multiple layers in the upper and lower directions of the push-insert frame 2 to form an upper and lower stacked installation layer, and a large-capacity battery 1 with an inclination angle of 20 degrees is formed with the battery frame to be inserted into a cavity for the layered installation of a plurality of large-capacity batteries. In this embodiment, two adjacent push-insert frames are 1 group, 8 layers of partition plates are arranged in the battery push-insert frame, and 16 large-capacity batteries are embedded in the battery push-insert frame.

The connector 24 includes a first connector 241 and a second connector 242.

A plurality of high-capacity batteries of the system are connected in series through the positive/negative electrode connector 241, and the connector 242 is arranged at the bottom of the battery inserting frame and is finally connected with the energy storage system adaptive connector to realize charging and discharging.

In the embodiment provided by the present application, the insertion mode of the large-capacity battery is that the bottom faces the lower side of the inclination angle, the heat exchange device 15 faces the upper side of the inclination angle with the terminal 142, and the insertion direction of the large-capacity battery in each row of the battery push-insert frame is consistent, that is, it is ensured that the heat exchange device 15 of each layer of the large-capacity battery is in the same vertical direction or the terminal 142 is in the same vertical direction.

Further, two adjacent rows of large capacity batteries push away insert frame 2 in large capacity battery 1 be the mirror image and arrange, two adjacent rows of large capacity batteries push away insert frame 2 be a set of promptly, and its inside large capacity battery heat transfer device 15 leans on both sides, and utmost point post 142 leans on the centre or is reverse, should arrange the purpose for the snakelike range of establishing ties between the convenient large capacity battery, saves space, sparingly connects the consumptive material.

The inclined arrangement can exert the working efficiency of the heat exchange device and the heat dissipation assembly of the high-capacity battery TEC to the maximum extent, the high-capacity battery needs to be vertically placed, but the high-capacity battery is limited in height and cannot be stacked in multiple layers in the vertical direction, so that the high-capacity battery is arranged in an upward transverse stacking mode by being inclined by 20 degrees.

Further, in the embodiment provided in the present application, the battery 1 includes a case 11, a battery pack 14 disposed in the case 11, and a heat exchanging device 15; the heat exchange device 15 comprises a semiconductor module arranged on the outer side of the upper cover plate 13 of the shell 1 and two identical heat dissipation assemblies 151 arranged in the shell 11, wherein the condensation ends of the heat dissipation assemblies 151 extend out of the upper cover plate 13 of the shell 11 to be connected with the semiconductor module.

The battery cells 14 in the case 1 share an electrolyte.

Further, in the embodiment provided in the present application, the heat dissipation assembly 14 includes a conductive bar 141 connected to the positive/negative electrodes of the battery pack in the battery housing, a hollow pole 142 connected to the conductive bar and having an outer wall groove, and a heat conductive fire extinguishing tube 145 disposed in the outer wall groove. The heat conduction fire extinguishing pipe is filled with heat conduction fire extinguishing materials, and when the temperature of the battery rises, the heat conduction fire extinguishing materials in the heat conduction fire extinguishing pipe flow out from the closed end to inhibit the explosion of the battery. The high-capacity battery fundamentally solves the series problems of battery capacity density, uniform heat dissipation, complex connecting wires, fire safety and the like.

Further, in the embodiment provided by the present application, a non-slip insulating pad for fixing the battery is provided between the frame plate 21 and the battery 1.

Further, in the embodiment provided by the present application, a cooling adsorption cavity 25 is included and is disposed at the bottom layer of the battery rack; the explosion venting port 12 of the upper cover plate of the battery is connected with the cooling adsorption cavity 25 through a collecting pipe. The cooling adsorption cavity is internally filled with a cooling adsorption material and a reaction material; the adsorbing material and the reaction material in the adsorption reaction cavity can be mixed and filled or filled in layers. The cooling adsorption material is one or more of ceramic, activated carbon, molecular sieve, activated alumina, silica gel and white carbon black. The reaction material is one or more of acid, alkali, strong base and weak acid salt.

Further, in the embodiment provided by the present application, the cooling adsorption chamber 25 includes a collection bag for collecting the excessive flammable and combustible harmful gas of the battery. The collecting bag is made of aluminum plastic or PVC or TPU.

Further, in the embodiment provided by the present application, a fire extinguishing device is disposed in the cooling adsorption cavity 25.

Further, in the embodiments provided in the present application, the fire extinguishing apparatus is a small self-induction warm aerosol fire extinguishing apparatus; when the temperature reaches default (180 ℃) the time automatic start extinguishing device, release nanometer put out a fire the corpuscle and dilute the burning of suppression combustible gas, avoid overflowing from the collection bag and contact the air because of the high temperature combustible gas that thermal runaway produced, further endanger whole energy storage system, also can avoid pushing away the outside conflagration burning that causes because of the special case of the frame and to pushing away inside the frame 2, cause uncontrollable loss.

Further, in the embodiment provided by the present application, a sensing alarm for detecting the inflow of the electrolyte and the gas is provided at the inlet of the cooling adsorption cavity 25;

the sensing alarm is connected with the energy storage system BMS, and the BMS controls the circuit of the power supply system to jump or cut off.

That is adsorption reaction storehouse in air inlet department be equipped with the alarm, it is multi-functional detection inductor, sensor such as collection electrolyte gas, combustion characteristic gas, temperature, smog, flame, alarm with signal transmission to BMS under the extreme condition, jump the way or cut off the power supply system circuit after BMS handles.

Further, in the embodiments provided herein, the connector 24 is one or more of an extruded aluminum ingot, an aluminum post extension, an aluminum pad row, a copper flexible row, and a copper cable.

Further, in embodiments provided herein, an insulating cover for covering the energy storage system is included. The insulating cover is made of a material which can resist high temperature of more than 130 ℃, is one or a combination of more than one of PVC, PP, PS, POM, PMMA, PBT, PC and ABS, and can effectively prevent electric leakage or wet short circuit.

Further, in the embodiments provided by the present application, the bottom of the battery rack is provided with at least four universal wheels 23 with a locking function, which is beneficial to the movement, installation and maintenance of the battery pack.

The application also provides a high-capacity battery energy storage system which comprises at least two battery racks.

Further, in the embodiment provided by the application, each 5 battery racks is an energy storage unit, bypass contactors are respectively arranged at the incoming end and the outgoing end of a line of the energy storage unit, and the two bypass contactors are connected in parallel; and after the BMS of the battery receives the signal of the sensing alarm, the energy storage unit with the problem is judged, and the energy storage unit is shielded through the bypass contactor.

Although the embodiments of the present application have been disclosed above, they are not limited to the applications listed in the description and the embodiments. It can be applied in all kinds of fields suitable for this application. Additional modifications will readily occur to those skilled in the art. Therefore, the application is not limited to the specific details and illustrations shown and described herein, without departing from the general concept defined by the claims and their equivalents.

Claims (22)

1. The utility model provides a large capacity battery energy storage system, includes the battery frame, the battery frame includes that two push away insert the frame, its characterized in that pushes away and is equipped with the frame plate that a plurality of slopes set up in the frame, the frame plate is along direction of height multilayer arrangement in pushing away the frame, forms the installation layer that supplies a plurality of batteries to pack into.

2. A large capacity battery energy storage system as claimed in claim 1, wherein the batteries in two said push-insert frames are arranged in mirror image, and positive/negative poles of a plurality of batteries are connected in series by positive/negative connectors;

the connector is connected with an adaptive connector of the energy storage system.

3. A large capacity battery energy storage system as claimed in claim 2, wherein the battery insertion direction in said push-insert rack is uniform.

4. A large capacity battery energy storage system as claimed in claim 3, wherein said shelf plate is inclined at an angle of 20 degrees.

5. A large capacity battery energy storage system as claimed in claim 4, wherein said battery comprises a housing, a battery pack disposed in said housing, and a heat exchange means;

the heat exchange device comprises a semiconductor module arranged on the outer side of the upper cover plate of the shell and two identical heat dissipation assemblies arranged in the shell, and the condensation ends of the heat dissipation assemblies extend out of the upper cover plate of the shell to be connected with the semiconductor module.

6. A large capacity battery energy storage system as claimed in claim 5, wherein the heat dissipation assembly comprises a conductive bar connected to the positive/negative electrodes of the battery pack in the battery housing, a hollow pole post connected to the conductive bar and having an outer wall groove, and a heat conducting fire extinguishing tube disposed in the outer wall groove.

7. A large capacity battery energy storage system as claimed in claim 6, wherein the heat conducting fire extinguishing pipe is filled with heat conducting fire extinguishing material, and when the temperature of the battery rises, the heat conducting fire extinguishing material inside the heat conducting fire extinguishing pipe flows out from the closed end to suppress explosion of the battery.

8. A large capacity battery energy storage system as claimed in claim 4, wherein said frame plate and said battery are provided with non-slip insulating pads therebetween for fixing the battery.

9. A large capacity battery energy storage system as claimed in claim 4, comprising a cooling adsorption chamber provided at the bottom layer of said battery holder;

and the explosion venting port of the upper cover plate of the battery is connected with the cooling adsorption cavity through a collecting pipe.

10. A large capacity battery energy storage system as claimed in claim 9, wherein the cooling adsorption cavity is filled with cooling adsorption material and reaction material;

the adsorption material and the reaction material in the cooling adsorption cavity can be filled in layers.

11. A high capacity battery energy storage system as claimed in claim 10, wherein the cooling adsorbing material is one of ceramic, activated carbon, molecular sieve, activated alumina, silica gel, and white carbon black.

12. A high capacity battery energy storage system as claimed in claim 11, wherein the reactive material is one of an acid, a base, a strong base and a weak acid salt.

13. A large capacity battery energy storage system as claimed in claim 9, wherein said cooling adsorption chamber includes a collection bag for collecting excess flammable and combustible harmful gases from the battery.

14. A high capacity battery energy storage system as claimed in claim 13, wherein the collecting bag is made of aluminum plastic or PVC or TPU.

15. A high capacity battery energy storage system as claimed in claim 14, wherein a fire extinguishing means is provided in said cooling adsorption chamber.

16. A high capacity battery energy storage system as claimed in claim 15, wherein said fire extinguishing means is a small self-induced thermal aerosol fire extinguishing means;

when the temperature reaches the preset value, the fire extinguishing device is automatically started, the nanometer fire extinguishing particles are released to dilute and inhibit the combustion of combustible gas, and the high-temperature combustible gas generated due to thermal runaway is prevented from overflowing from the collecting bag and contacting air, so that the whole energy storage system is further damaged.

17. A large capacity battery energy storage system as claimed in claim 16, wherein a sensing alarm for detecting the inflow of electrolyte and gas is provided at the inlet of said cooling adsorption chamber;

the sensing alarm is connected with the energy storage system BMS, and the BMS controls the circuit of the power supply system to be in a circuit skipping or cut off state.

18. A high capacity battery energy storage system as claimed in claim 2, wherein the connector is one or more of a combination of extruded aluminium ingot, aluminium post extension, aluminium pad row, copper soft row and copper cable.

19. A large capacity battery energy storage system as claimed in claim 1, comprising an insulating cover for covering the energy storage system.

20. A high capacity battery energy storage system as claimed in claim 19, wherein the insulating cover is made of one of PVC, PP, PS, POM, PMMA, PBT, PC and ABS.

21. A large capacity battery energy storage system as claimed in any one of claims 1 to 20, wherein the bottom of the battery holder is provided with at least four universal wheels with locking function.

22. A large capacity battery energy storage system as claimed in any one of claims 1 to 20, wherein, every 5 battery racks are an energy storage unit, the input end and the output end of the circuit of the energy storage unit are respectively provided with a bypass contactor, and the two bypass contactors are connected in parallel;

and after the BMS of the battery receives the signal of the sensing alarm, the energy storage unit with the problem is judged, and the energy storage unit is shielded by the bypass contactor.

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