CN113314785A

CN113314785A - Internal cooling device and method for energy storage container

Info

Publication number: CN113314785A
Application number: CN202110860577.XA
Authority: CN
Inventors: 殷爱军; 曹政坤; 李文龙; 侯跃艳; 刘鹏; 朱洪春; 李建勇
Original assignee: Shandong Hengming Green Technology Research Institute Co ltd
Current assignee: Shandong Hengming Green Technology Research Institute Co ltd
Priority date: 2021-07-29
Filing date: 2021-07-29
Publication date: 2021-08-27
Anticipated expiration: 2041-07-29
Also published as: CN113314785B

Abstract

The invention discloses an internal cooling device of an energy storage container, which comprises: the energy storage battery module is used for storing and using a large amount of energy in a centralized manner, and a cavity is formed in the box body close to the top; the heat absorption assembly is arranged in the cavity and used for absorbing heat generated by the battery pack, and the heat absorption assembly comprises a first air inlet and a first air outlet of the supporting plate. According to the invention, through the mutual matching of the heat absorption component, the driving part and other structures, when the supporting plate moves in the cavity, the air pressure in the cavity is continuously changed, so that the first air inlet absorbs heat generated by the battery pack in the box body, and then the heat is discharged through the first air outlet, the temperature in the box body is reduced through the operation, the temperature difference among batteries is reduced, and the service life and the performance of the whole equipment are ensured.

Description

Internal cooling device and method for energy storage container

Technical Field

The invention relates to the field of energy storage equipment, in particular to an internal cooling device of an energy storage container and a method thereof.

Background

An energy storage container is an energy storage device with a high concentration formed by placing a plurality of energy storage battery packs in the container, has the advantages of short construction time, convenient movement, small occupied area and the like, and is continuously applied to various large-scale projects in recent years.

With the continuous development of energy storage technology, people have higher and higher requirements on energy storage systems. When the energy storage container is in operation, battery charge and discharge can produce a large amount of heats and be difficult to discharge, and the influence of battery spatial position can produce inhomogeneous heat gathering, makes the difference in temperature appear between the battery. The internal resistance and the capacity of each battery are inconsistent due to a large temperature difference, and over-charge or over-discharge of part of batteries is caused finally along with the accumulation of time, so that the service life and the performance of the whole system are influenced.

Disclosure of Invention

The invention aims to solve the following defects in the prior art that when an energy storage container is in operation, a large amount of heat is generated and difficult to discharge due to battery charging and discharging, and uneven heat accumulation is generated due to the influence of the spatial position of the batteries, so that temperature difference occurs among the batteries. The internal resistance and capacity of each battery are inconsistent due to large temperature difference, and over-charging or over-discharging of part of the batteries is finally caused along with the accumulation of time, so that the service life and the performance of the whole system are influenced.

In order to achieve the purpose, the invention adopts the following technical scheme:

an energy storage container internal cooling arrangement comprising:

the energy storage battery module is used for storing and using a large amount of energy in a centralized manner, and a cavity is formed in the box body close to the top;

the heat absorption assembly is arranged in the cavity and used for absorbing heat generated by the battery pack, and the heat absorption assembly comprises a supporting plate, a first air inlet and a first air outlet.

Preferably, the backup pad passes through driver part slidable mounting in the cavity, the perpendicular fixed mounting of first air inlet symmetry is in the box on the roof and be linked together with the cavity, the perpendicular fixed mounting of first air vent symmetry is in the box top and one of them a pair of first exhaust port are linked together through connecting pipe and radiating part, first air inlet port department is equipped with the check valve.

Preferably, the driving part comprises a reciprocating screw rod and a switched reluctance motor, the switched reluctance motor is fixedly mounted on the upper surface of the box body close to the uniform part, and the reciprocating screw rod is vertically and rotatably mounted on an output shaft of the switched reluctance motor, which penetrates through the surface of the box body, and is in threaded sleeve connection with the supporting plate.

Preferably, the both ends that backup pad length is shorter relatively are equipped with the spacing part of mutual symmetry, spacing part includes spacing groove, two balls and stopper, stopper level fixed connection be in on the lateral wall of backup pad, the spacing groove is seted up on the lateral wall of cavity and is cooperateed and use, two with the stopper the ball rolls respectively and installs on two lateral walls of stopper, and through spout slidable mounting at the spacing inslot.

Preferably, every the heat dissipation part all includes the heat dissipation case, two heat dissipation case fixed connection be in the roof of cavity is close to both sides and places, the heat dissipation incasement is seted up breather pipe and sealed tube, and sealed tube is located the top of breather pipe, the both ends of breather pipe are equipped with second air inlet and second gas vent respectively, be equipped with the circulation part in the sealed tube.

Preferably, the circulation member includes a chucking plate disposed near a lower end inside the sealing tube and a circulation chamber formed between the chucking plate and a side wall of the sealing tube.

Preferably, the circulation cavity is filled with liquid, and the liquid is located at the second air inlet of the sealing pipe close to the vent pipe.

Preferably, a plurality of liquid absorbing cores are arranged in the circulating cavity, and a plurality of capillary tubes are arranged on the surfaces of the liquid absorbing cores.

Preferably, the surface of the clamping plate is inclined from left to right, and a plurality of through holes are formed in the surface of the clamping plate.

In the invention, the method suitable for cooling the energy storage container comprises the following steps:

s1: firstly, when a container is used for storing energy, a large number of battery packs begin to work to generate heat, and then a power supply of a switched reluctance motor in a driving part is turned on at the moment, so that a rotating output shaft drives a reciprocating screw rod fixedly connected with the rotating output shaft to rotate;

s2: the reciprocating screw rod rotating at a high speed rotates in the cavity, so that the support plate sleeved with the screw rod is driven to move, and the support plate can only move up and down in the cavity under the action of the limiting part;

s3: in the relatively sealed cavity, the air pressure in the cavity is continuously changed due to the movement of the supporting plate, so that gas exchange is carried out between the first air inlet and the first air outlet, namely, heat generated by the battery pack in the box body is sucked into the cavity through the first air inlet, and then hot gas is exhausted through the first air outlet by the movement of the supporting plate;

s4: one part of heat is discharged into the nature, the other part of heat is transmitted into the ventilation pipe of the heat dissipation part through the connecting pipe and the second air inlet, the heat in the air is absorbed under the action of the circulating part, and then the relatively cold air is discharged through the second air outlet.

Compared with the prior art, the invention has the beneficial effects that:

1. through mutually supporting of heat absorption subassembly and driver part and other structures for when the backup pad removes in the cavity, the inside atmospheric pressure of continuous change cavity, thereby make first air inlet absorb the heat that the group battery produced in the box, then discharge through first exhaust port, make the inside temperature of box decline through this operation, reduce the difference in temperature between the battery, ensured the life-span and the performance of whole equipment.

2. Mutually support through heat absorption subassembly and other subassemblies with first exhaust port exhaust hot gas for absorb its heat through the effect of cyclic component with the heat that the breather pipe is close to second air inlet department, any temperature air lower relatively discharges through the second exhaust port, then in the same direction as near the group battery is carried to the breather pipe, thereby further cooling to the group battery, thereby better reach the cooling effect.

3. The circulating part is utilized to convert energy of air with heat, when the evaporation section of the sealing pipe is heated, volatile liquid in the sealing pipe is heated and vaporized, formed water vapor moves from the evaporation section to the cooling section through the circulating cavity of the sealing pipe, the water vapor in the cooling section with lower temperature is liquefied and changed into liquid, and then flows to the evaporation section from the cooling section, so that the heat dissipation effect is achieved in a circulating reciprocating mode.

Drawings

Fig. 1 is a schematic bottom perspective view of an internal cooling device of an energy storage container according to the present invention;

fig. 2 is a schematic left-side perspective view of an internal cooling device of an energy storage container according to the present invention;

fig. 3 is a schematic structural view of a heat absorption assembly of an internal cooling device of an energy storage container in a front cross-sectional perspective view according to the present invention;

fig. 4 is a schematic view of a sectional top perspective structure of a heat absorbing assembly of an internal cooling device of an energy storage container according to the present invention;

fig. 5 is a schematic front sectional perspective view of a heat dissipation component of an internal cooling device of an energy storage container according to the present invention;

FIG. 6 is a partially enlarged perspective view of A in FIG. 4;

fig. 7 is a partially enlarged perspective view of B in fig. 5.

In the figure: the heat absorption device comprises a box body 1, a cavity 2, a heat absorption component 3, a support plate 31, a first air inlet 32, a first air outlet 33, a driving part 4, a reciprocating screw rod 41, a switched reluctance motor 42, a heat dissipation part 5, a heat dissipation box 51, an air pipe 52, a sealing pipe 53, a second air inlet 54, a second air outlet 55, a limiting part 6, a limiting groove 61, balls 62, a limiting block 63, a circulating part 7, a clamping plate 71, a circulating cavity 72, a connecting pipe 8, a liquid absorption core 9, a capillary tube 10 and a through hole 11.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1-7, an energy storage container internal cooling arrangement includes;

the energy storage battery module is used for storing and using a large amount of energy in a centralized manner, and a cavity 2 is formed in the box body 1 close to the top;

and a heat absorbing member 3, the heat absorbing member 3 being disposed in the cavity 2 and being for absorbing heat generated from the battery pack, the heat absorbing member 3 including a support plate 31, a first air inlet 32, and a first air outlet 33.

The supporting plate 31 is slidably mounted in the cavity 2 through the driving part 4, the first air inlets 32 are symmetrically, vertically and fixedly mounted on the inner top wall of the box body 1 and communicated with the cavity 2, the first air outlets 33 are symmetrically, vertically and fixedly mounted on the top of the box body 1, one pair of the first air outlets 33 are communicated with the heat dissipation part 5 through the connecting pipe 8, one-way valves are arranged at the ports of the first air inlets 32, when the supporting plate 31 moves in the cavity 2 under the action of the driving part 4, because the cavity 2 is relatively sealed, air pressure in the cavity 2 is changed to exhaust air through the first air inlets 32 and the first air outlets 33, the one-way valves at the first air inlets 32 are opened when air is supplied and closed when air is exhausted, firstly, when the supporting plate 31 moves upwards, the air pressure at the lower end of the supporting plate 31 is gradually reduced, at the moment, heat in the box body 1 is sucked, when the supporting plate 31 moves downward, the air inside is continuously compressed due to the check valve, and the air with heat is discharged to the outside only through a portion of the first air outlet 33 and enters the inside of the heat radiating member 5 through the connecting pipe 8.

The driving part 4 comprises a reciprocating screw rod 41 and a switch type reluctance motor 42, the switch type reluctance motor 42 is fixedly arranged on the upper surface of the box body 1 close to the uniform part, the reciprocating screw rod 41 is vertically and rotatably arranged on an output shaft of the switch type reluctance motor 42 penetrating through the surface of the box body 1 and is in threaded sleeve joint with the supporting plate 31, the switch type reluctance motor 42 is powered on to rotate the output shaft at a high speed, the output shaft rotating at the high speed drives the reciprocating screw rod 41 fixedly connected with the output shaft to start rotating, and therefore the supporting plate 31 in threaded sleeve joint with the reciprocating screw rod 41 also starts moving.

The both ends that backup pad 31 length is relatively short are equipped with the spacing part 6 of mutual symmetry, spacing part 6 includes spacing groove 61, two balls 62 and stopper 63, stopper 63 level fixed connection is on the lateral wall of backup pad 31, spacing groove 61 is seted up on the lateral wall of cavity 2 and is cooperateed and use with stopper 63, two balls 62 roll respectively and install on two lateral walls of stopper 63, and through spout slidable mounting in spacing groove 61, when backup pad 31 moves, the stopper 63 of taking rather than lateral wall fixed connection at this moment also removes thereupon, the ball 62 that uses of deuterogamying rolls in the spout, thereby make stopper 63 can be smooth and easy reciprocate in spacing groove 61, the primary action of spacing part 6 is used for spacing backup pad 31, can only remove in the vertical direction promptly.

Each heat dissipation part 5 comprises heat dissipation boxes 51, the two heat dissipation boxes 51 are fixedly connected to the top wall of the cavity 2 and are placed close to two sides, a vent pipe 52 and a sealing pipe 53 are arranged in each heat dissipation box 51, the sealing pipe 53 is positioned above the vent pipe 52, a second air inlet 54 and a second air outlet 55 are respectively arranged at two ends of the vent pipe 52, a circulation part 7 is arranged in the sealing pipe 53, when heat reaches the second air inlet 54 along a connecting pipe 8 from a first air outlet 33 and finally reaches the vent pipe 52, air with heat is slowly cooled under the action of the circulation part 7, then due to the flowing of the air, the air slowly approaches the second air outlet 55 and is exhausted out of the vent pipe 52, at the moment, a vent pipe is connected to the port of the second air outlet 55, and then relatively cold air is conveyed to the vicinity of a battery pack which generates heat along the vent pipe to further cool the battery pack, thereby better achieving the cooling effect.

The circulation part 7 includes a clamping plate 71 and a circulation chamber 72, the clamping plate 71 is disposed near the lower end inside the sealing pipe 53, the circulation chamber 72 is formed between the clamping plate 71 and the side wall of the sealing pipe 53, and in the circulation chamber 72, one end near the second air inlet 54 is an evaporation section, and the other end is a cooling section, when air with heat is absorbed in the evaporation section, then the air is continuously injected in the air pipe 52, and the heat-absorbed air is discharged through the second air outlet 55.

The inside packing of circulation chamber 72 has liquid, liquid is located the second air inlet 54 department that sealed tube 53 is close to breather pipe 52, it heats to the liquid that persists in the evaporation zone just to get into breather pipe 52 air, because liquid heating needs the absorbed heat, the heat in the air is slowly absorbed this moment, liquid vaporization has become vapor this moment, then vapor removes from the evaporation zone toward the cooling zone, slowly contact lower temperature, vapor liquefaction becomes liquid this moment, flow back to the evaporation zone along splint 71, go on so repeatedly carrying out the heat absorption cooling to the air that has the heat, and liquid adopts distilled water, and distilled water is volatile and colorless tasteless nontoxic, the recovery in later stage does not pollute the environment.

Be equipped with a plurality of imbibition core 9 in the circulation chamber 72, be equipped with a plurality of capillary 10 on the imbibition core 9 surface, capillary 10 mainly used adsorbs the processing to remaining liquid on the splint 71, and the imbibition core 9 that sets up mainly reserves liquid inside it to make and absorb more heat to the air and come to vaporize liquid, make and to have thermal air cooling effect better.

Splint 71's surface is the slope form from the left hand right side, and splint 71 surface department has seted up a plurality of through-hole 11, and the face sets up to the slope form for the entering evaporation zone that makes the liquid that is liquefied in the cooling zone can be faster to improve refrigerated effect, the through-hole 11 of setting conveniently can be followed the imbibition core 9 by evaporation liquid and discharged on the one hand, on the other hand can make the drop that can be smooth by liquefied vapor in imbibition core 9.

The method suitable for cooling the energy storage container comprises the following steps:

s1: firstly, when a container is used for storing energy, a large number of battery packs begin to work to generate heat, and then the power supply of the switched reluctance motor 42 in the driving part 4 is turned on at the moment, so that the rotating output shaft drives the reciprocating screw rod 41 fixedly connected with the rotating output shaft to rotate;

s2: the reciprocating screw rod 41 rotating at a high speed rotates in the cavity 2, so that the supporting plate 31 sleeved with the screw rod starts to move, and the supporting plate 31 can only move up and down in the cavity 2 under the action of the limiting part 6;

s3: in the relatively sealed cavity 2, the air pressure inside the cavity 2 is continuously changed due to the movement of the support plate 31, so that the exchange of air is performed between the first air inlet 32 and the first air outlet 33, that is, the heat generated by the battery pack inside the case 1 is sucked into the cavity 2 through the first air inlet 32, and then the hot air is exhausted through the first air outlet 33 by the movement of the support plate 31;

s4: a part of the heat is discharged to the nature, and the other part of the heat is transferred to the air pipe 52 of the heat-radiating member 5 through the connection pipe 8 and the second air inlet 54, absorbs the heat in the gas by the circulation member 7, and then discharges the relatively cold gas through the second air outlet 55.

In the invention, when the container is used for storing energy, the power supply of the switch type reluctance motor 42 in the driving part 4 is turned on, then the output shaft rotating at high speed drives the reciprocating screw rod 41 fixedly connected with the output shaft to start rotating, so that the supporting plate 31 in threaded sleeve connection with the reciprocating screw rod 41 also starts moving, support plate 31 is caused to move up and down within cavity 2 by limiting member 6, and, when support plate 31 moves up, at this time, the air pressure at the lower end of the support plate 31 is gradually decreased, and at this time, heat inside the case 1 is sucked into the cavity 2 through the first air inlet 32, and as the support plate 31 moves downward, at this time, the gas inside is continuously compressed due to the check valve, and the air with heat is discharged to the outside only through a portion of the first exhaust port 33, and the other portion enters the inside of the heat radiating member 5 through the connection pipe 8 for further cooling.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. An energy storage container internal cooling arrangement, comprising:

the energy storage battery pack comprises a box body (1), wherein a plurality of energy storage battery modules are installed in the box body (1), the energy storage battery modules are used for storing and using a large amount of energy in a centralized mode, and a cavity (2) is formed in the position, close to the top, of the box body (1);

the heat absorption component (3) is arranged in the cavity (2) and is used for absorbing heat generated by the battery pack, and the heat absorption component (3) comprises a support plate (31), a first air inlet (32) and a first air outlet (33);

the supporting plate (31) is slidably mounted in the cavity (2) through a driving part (4), the first air inlets (32) are symmetrically, vertically and fixedly mounted on the inner top wall of the box body (1) and communicated with the cavity (2), the first air outlets (33) are symmetrically, vertically and fixedly mounted on the top of the box body (1), a pair of first air outlets (33) are communicated with the heat dissipation part (5) through connecting pipes (8), and one-way valves are arranged at ports of the first air inlets (32);

the driving part (4) comprises a reciprocating screw rod (41) and a switch type reluctance motor (42), the switch type reluctance motor (42) is fixedly installed on the upper surface of the box body (1) close to the uniform part, and the reciprocating screw rod (41) is vertically and rotatably installed on an output shaft of the switch type reluctance motor (42) penetrating through the surface of the box body (1) and is in threaded sleeve joint with the supporting plate (31).

2. An energy storage container internal cooling device according to claim 1, characterized in that, the both ends that backup pad (31) length is relatively short are equipped with spacing part (6) of mutual symmetry, spacing part (6) include spacing groove (61), two balls (62) and stopper (63), stopper (63) horizontal fixed connection be in on the lateral wall of backup pad (31), spacing groove (61) are seted up on the lateral wall of cavity (2) and are cooperateed and use with stopper (63), two balls (62) roll respectively and install on two lateral walls of stopper (63), and through spout slidable mounting in spacing groove (61).

3. An energy storage container internal cooling device as claimed in claim 1, wherein each heat dissipating member (5) comprises a heat dissipating box (51), two heat dissipating boxes (51) are fixedly connected to the top wall of the cavity (2) and are disposed near two sides, a vent pipe (52) and a sealing pipe (53) are disposed in each heat dissipating box (51), the sealing pipe (53) is disposed above the vent pipe (52), a second air inlet (54) and a second air outlet (55) are disposed at two ends of the vent pipe (52), and a circulating member (7) is disposed in each sealing pipe (53).

4. An energy storage container internal cooling arrangement as claimed in claim 3, characterised in that said circulating member (7) comprises a clamping plate (71) and a circulating chamber (72), said clamping plate (71) being arranged near the lower end inside the gland (53), said circulating chamber (72) being formed between the clamping plate (71) and the side wall of the gland (53).

5. An energy storage container internal cooling arrangement as claimed in claim 4, characterised in that the circulation chamber (72) is filled with liquid at the second air inlet (54) of the air duct (52) adjacent the sealing tube (53).

6. An energy storage container internal cooling arrangement as claimed in claim 5, characterised in that a plurality of wicks (9) are provided within said circulation chamber (72), said wicks (9) having a plurality of capillary tubes (10) on the surface thereof.

7. An energy storage container internal cooling device as claimed in claim 6, characterized in that the surface of said clamping plate (71) is inclined from left to right, and a plurality of through holes (11) are opened on the surface of the clamping plate (71).

8. A method of cooling the interior of an energy storage container, the method comprising the steps of:

s1: firstly, when a container is used for storing energy, a large number of battery packs begin to work to generate heat, and then the power supply of a switched reluctance motor (42) in a driving part (4) is turned on at the moment, so that a rotating output shaft drives a reciprocating screw rod (41) fixedly connected with the rotating output shaft to rotate;

s2: the reciprocating screw rod (41) rotating at a high speed rotates in the cavity (2), so that the supporting plate (31) sleeved with the screw rod is driven to move, and the supporting plate (31) can only move up and down in the cavity (2) under the action of the limiting part (6);

s3: in the relatively sealed cavity (2), the air pressure inside the cavity (2) is continuously changed due to the movement of the support plate (31), so that the exchange of air is carried out between the first air inlet (32) and the first air outlet (33), namely, the heat generated by the battery pack inside the box body (1) is sucked into the cavity (2) through the first air inlet (32), and then the hot air is exhausted through the first air outlet (33) by the movement of the support plate (31);

s4: one part of the heat is discharged into the nature, the other part of the heat is transmitted into a vent pipe (52) of the heat-radiating member (5) through the connecting pipe (8) and the second air inlet (54), the heat in the gas is absorbed under the action of the circulating member (7), and then the relatively cold gas is discharged through the second air outlet (55).