WO2020001510A1 - Energy storage device - Google Patents

Abstract

An energy storage device, comprising: a shell (121) used for defining a space for containing a phase change material (122); and a heat exchanger (123) provided in the space and used for heat exchange with the phase change material (122). The heat exchanger (123) comprises at least one group of heat exchange units (1231, 1232). Each heat exchange unit (1231, 1232) comprises a heat exchange body and a heat exchange reinforced part. The heat exchange reinforced part is used for reinforcing the heat conduction of the phase change material (122) and the heat exchange body. According to the energy storage device, the phase change material (122) is used for storing and releasing cooling capacity and maintains the refrigeration environment of heat preservation devices without a power supply; a power source is not needed, and the power source-free refrigeration is realized; the heat exchange reinforced part of the energy storage device enlarges the contact area of the phase change material (122) and the heat exchanger (123), so that the energy storage device uniformly releases cooling capacity, the heat preservation device has little temperature fluctuation, accurate temperature control is achieved, and the rate of damage caused by corrosion is reduced, thereby effectively ensuring the quality of goods.

Description

Energy storage device Technical field

The invention relates to an energy storage device, in particular to an energy storage device of a thermal insulation device.

Background technique

Cold chain container is a kind of insulated transport equipment used to transport temperature sensitive goods. It is necessary to keep the products in the box within a certain temperature range during the transportation process through the thermal insulation device, and to ensure the quality of the goods without being affected by changes in ambient temperature and humidity.

In order to keep the temperature in the thermal insulation transportation equipment such as containers constant within a predetermined range, there are two main methods of thermal insulation in the prior art. One is to equip the cabinet with a refrigeration unit, and the other is to install a cold storage in the cabinet that can release the amount of cold. board. The cold storage plate contains the phase change material, and performs the function of temperature adjustment through the heat exchange with the storage space through the energy change caused by the phase change process of the material. However, in the prior art, the way to supplement the cold storage plate is to replace the entire cold storage plate, or to place the cold storage plate or the cold storage plate and the insulation box in a cold storage for freezing. These cold replenishment methods are relatively simple, with low replenishment efficiency, long time and high cost. In addition, the amount of cold released by the phase change material in the cold storage plate is uneven, which makes the temperature fluctuation in the insulation equipment large, the temperature control is not accurate, and the rate of cargo damage is high.

Summary of the invention

The main purpose of the present invention is to provide an energy storage device, which can release cold uniformly and facilitate the replenishment of cooling capacity, make the temperature fluctuation of the insulation device small, control the temperature accurately, reduce the rate of cargo damage, and effectively ensure the quality of the cargo.

To achieve the above object, according to an aspect of the present invention, an energy storage device is provided.

An energy storage device includes: a shell, the shell defining a space for accommodating a phase change material; a heat exchanger, the heat exchanger being disposed in the space and used for heat exchange with the phase change material, the heat exchanger including at least one group The heat exchange unit includes a heat exchange body and a heat exchange strengthening part, and the heat exchange strengthening part strengthens heat conduction between the phase change material and the heat exchange body.

Further, the heat exchange reinforcing portion increases a contact area between the phase change material and the heat exchanger, and is disposed around the heat exchange body.

Further, the heat exchange reinforcing portion is provided to extend at least partially radially outward from the heat exchange body.

Further, the heat exchange reinforcing portion is provided to extend at least partially axially from the heat exchange body.

Further, the heat exchange enhancement parts are arranged at different axial positions of the heat exchange body.

Further, the heat exchange reinforcing portion is coiled around the heat exchange body in a spiral manner.

Further, the heat exchange reinforcing part supports the heat exchange body and is carried on a surface of the shell facing the phase change material.

Further, the heat exchange body includes at least one tube portion.

Further, the heat exchange body includes a plurality of tube portions connected in sequence, the heat exchange reinforcement portion includes a heat exchange reinforcement unit for each tube portion, and adjacent heat exchange reinforcement units are at least partially thermally conductively connected to each other.

Further, adjacent heat exchange strengthening units are connected at least partially.

Further, the heat exchange body is configured as a bent tube, the bent tube includes one or more U-shaped bends, the plurality of tube portions are straight tube portions of the U-shaped bent tube, and the plurality of tube portions are connected by the U-shaped portion.

Further, the heat exchange enhancement unit includes a plurality of heat exchange fins.

Further, the heat exchange fins are provided as linear or arc fins extending radially outward from the tube portion.

Further, the heat exchange strengthening unit includes fins extending vertically in the abutment direction and / or abutment direction of the tube portion, respectively, and at least part of the fins provide the tube portion with vertical support in the abutment direction and / or abutment direction. force.

Further, the fins extending in the abutting direction of the tube portions include fins connected between adjacent tube portions.

Further, the fins extending in the abutting direction of the tube portion include a fin supported between the tube portion and the casing near the casing.

Further, the fins between adjacent tube portions are connected to each other.

Further, the fins between adjacent tube portions are connected together by means of snap-fitting, embedding or overlapping.

Further, the fins between adjacent tube portions extend over the entire axial length of the tube portions.

Further, the fins extending in the abutting direction of the tube portion and / or the fins extending vertically in the abutting direction extend all the way to the surface of the shell facing the phase change material.

Further, the energy storage device includes multiple groups of heat exchange units, and adjacent heat exchange units are thermally conductively connected.

Further, adjacent heat exchange reinforcing units of adjacent heat exchange units are at least partially thermally connected to each other.

Further, adjacent heat exchange strengthening units of adjacent heat exchange units are at least partially connected together.

Further, a crystal nucleus for accelerating the phase change of the phase change material is provided in the shell.

Further, the crystal nucleus has a honeycomb structure.

Applying the technical solution of the present invention, the energy storage device of the heat insulation equipment is provided with a heat exchange strengthening portion, which increases the contact area of the phase change material and the heat exchanger, so that the heat insulation equipment can release the cold uniformly, the temperature fluctuation is small, and the Accurate temperature, reduce the rate of cargo corruption, and effectively ensure the quality of the cargo. The stored cold capacity of the phase change material of the energy storage device is separated from the power supply to maintain the refrigerated environment of the thermal insulation equipment, and no power source is required to achieve passive cooling; the operation safety is significantly improved, and artificial interference during the transportation is avoided to avoid refrigeration. In addition, the phase change material used in the energy storage device of the thermal insulation equipment has a large cold storage density, high latent heat value, non-toxic, non-corrosive, and no pollution; it is safe to use, non-flammable and explosive, stable cycle performance, and long service life. The energy storage device is mechanically connected to other structures, which facilitates maintenance and low transportation costs.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings, which form a part of this application, are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and the descriptions thereof are used to explain the present invention, and do not constitute an improper limitation on the present invention. In the drawings:

FIG. 1 is a schematic diagram of a thermal storage and transportation system of the present invention; and

FIG. 2 is a schematic diagram of the interior of the thermal insulation device of the present invention;

3 is a schematic diagram showing the distribution of internal energy storage devices and pipelines of the thermal insulation equipment of the present invention;

4 is a schematic structural diagram of an energy storage device according to the present invention;

5 is a sectional view taken along A-A in FIG. 4;

6 is a schematic cross-sectional view of a heat exchanger of an energy storage device in Embodiment 1 of the present invention;

7 (a) -7 (e) are schematic cross-sectional views of heat exchangers of energy storage devices in Embodiments 2 to 6 of the present invention;

FIG. 8 is a schematic structural diagram of a cold storage container according to the present invention; FIG.

FIG. 9 is a schematic view of a heat preservation water tank of a cold storage container according to the present invention; FIG.

Fig. 10 is a schematic diagram of the working principle of the cold-charge container of the present invention;

FIG. 11 is a schematic structural diagram of a thermal insulation transport vehicle according to the present invention.

The above drawings include the following reference signs:

Insulation equipment 1, cooling and cooling equipment 2, information monitoring system 3,

Incubator body 11, energy storage device 12, piping system 13,

Housing 121, phase change material 122, heat exchanger 123, heat sink fins 124, bent tubes 125, fins 126, honeycomb aluminum 127,

First heat exchange unit 1231, second heat exchange unit 1232,

The first tube portion 1251, the second tube portion 1252, the third tube portion 1253, the fourth tube portion 1254,

First fin 1261, second fin 1262, third fin 1263, divergent fin 1264,

Inlet joint 131, outlet joint 132,

Outer circulation pump 21, outer circulation pipeline 22, heat preservation water tank 23, inner circulation pump 24, inner circulation pipeline 25, refrigeration unit 26,

A first storage unit 231, a second storage unit 232, a partition 233,

A first liquid outlet pipe 221, a first liquid inlet pipe 242, a second liquid outlet pipe 241, a second liquid inlet pipe 222,

Information acquisition module 31 and central processing unit 32.

detailed description

It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the drawings and embodiments.

The present invention is described in further detail below with reference to specific embodiments, which cannot be understood as limiting the scope of protection of the present invention.

As shown in FIG. 1, the low-temperature storage and transportation system of the present invention is a multimodal cold chain transportation system based on phase change energy storage technology, and is used to transport frozen, chilled or biological products that require storage environment temperature. The low-temperature storage and transportation system includes a thermal insulation device 1, a cooling and cooling device 2 and an information control system 3 which can be transported. Insulation equipment 1; used to store items, mounted on railway, highway or water transportation equipment for transportation. The insulation equipment includes an incubator body 11, and an energy storage device 12 is provided inside the incubator body 11 to provide a substantially constant amount that meets the storage requirements of the items. Temperature and humidity environment. The charging and cooling device 2 charges and cools the energy storage device 12 of the thermal insulation device 1, and the energy storage device 12 stores and releases the cold amount, so that the interior of the thermal insulation device body 11 maintains a constant temperature. The information control system 3 obtains information data on the heat-preserving equipment 1 and / or the cooling and cooling equipment 2 and implements functions such as status monitoring, path planning, settlement and payment based on the information data. Specifically, the information control system 3 locates the thermal insulation equipment 1 and the cooling and cooling equipment 2 in real time, and collects the ambient temperature and humidity of the thermal insulation equipment 1 and the cooling and cooling equipment 2 to monitor the environment inside the thermal insulation equipment 1 and the working status of the cooling and cooling equipment 2. Return status information, and coordinate the cooling and cooling layout to plan the cooling and cooling plan.

According to the different requirements of the ambient temperature during transportation, the insulation equipment may need to be charged or cooled. The cooling equipment needs to charge the cooling medium or the heat storage medium to transmit the cooling medium. As an example. The structure using the heating and cooling equipment is the same as that using the cooling and cooling equipment, except that the medium for heat transfer with the phase change material is a heat storage medium.

As shown in Figure 2-3, the thermal insulation device 1 is used to store items. Therefore, during transportation, the temperature inside the thermal insulation device needs to be maintained within a predetermined temperature range. Based on the above requirements, the thermal insulation equipment includes a thermal insulation box body 11 for storing items, an energy storage device 12 that releases cold energy, and a piping system 13. The thermal insulation equipment includes at least one energy storage device 12, which is disposed on the top and / or sides of the thermal insulation box body 11. The phase change material is contained in the energy storage device. The phase change material has a large cold storage density and uniform energy release. Therefore, the cold energy of the energy storage device is continuously and uniformly released, and the temperature is automatically adjusted to keep the ambient temperature constant at the phase change point temperature. A refrigerated or frozen environment in the incubator body 11. Phase change materials continue to release cold energy, and after a certain time, they need to be supplemented with cold energy. The piping system 13 receives the cold carrier medium from the cooling and cooling equipment 2 and circulates the cold carrier medium to the energy storage device. The cold-carrying medium that is continuously flowing in the pipeline 13 performs heat exchange with the phase change material 122 of the energy storage device, causes the phase change material 122 to undergo a phase change, and stores the cold energy in the phase change material 122.

As shown in FIGS. 4-7, the energy storage device includes a housing 121 that defines a space that houses the phase change material 122. A heat exchanger 123 is also provided in the casing 121, and the heat exchanger 123 performs heat exchange with the phase change material 122. When the energy storage device is charged and cooled, that is, under the charging and cooling conditions, the heat exchanger is continuously supplied with a cooling medium, and the phase change material exchanges heat with the cooling medium in the heat exchanger to generate a phase change. After the phase change material completely undergoes a phase change, or after meeting the predetermined requirements, the charging and cooling of the energy storage device is stopped, that is, the supply of the cooling medium is stopped. The phase change material releases the stored cold quantity into the thermal insulation device 1.

The case is made of a metal material with good thermal conductivity and rigidity, and a heat radiation reinforcing portion is provided outside the case. There are two forms of heat dissipation enhancement. In the first form, heat dissipation fins 124 are at least partially provided on the outer surface of the housing. The heat dissipation fins 124 increase the contact area between the energy storage device and the storage space in the main body of the thermal insulation box, which is conducive to the uniform release of cold energy. In the second form, the shell can adopt a flat plate structure, which also increases the heat radiation contact area between the shell and the external space in the main body of the thermal insulation box, which is conducive to the uniform release of cold energy. At least one wall of the shell is provided in the form of a curved pressing plate, and the surface structure may be a ribbed plate structure, a wavy structure, or other structures having alternating protrusions and grooves.

The heat exchanger 123 is immersed in the phase change material and can cool the phase change material 122. Of course, according to actual needs, the heat exchanger 123 can optionally heat the phase change material 122. The heat exchanger includes at least one group of heat exchange units 1231. Each group of heat exchange units has a cold carrier medium inlet a and a cold carrier medium outlet b. The heat exchanger unit includes a heat exchange body and a heat exchange reinforcing portion. The heat-exchanging body is used for accommodating the cooling medium. The heat-exchanging body is provided in the form of at least one tube portion. In the first embodiment, the heat-exchanging body is in the form of a bent pipe 125, and the bent pipe includes one or more U-shaped bends. The cold-loaded medium flows through the bent tube and performs heat transfer with the phase change material at the same time. The heat exchange strengthening part is used to strengthen the heat conduction between the phase change material and the cooling medium in the heat exchange body. In order to promote the heat exchange between the cooling medium and the phase change material, a heat exchange reinforcing portion is provided on the outside of the bending tube 125. In the first embodiment, the heat exchange reinforcing portion is a fin 126. The heat exchange unit 1231 includes a bent tube 125 and a fin 126.

As shown in the first embodiment shown in FIGS. 4 and 6, the bending pipe 125 has two U-shaped bends, and three U-shaped elbows on the two sides sequentially connect the four straight pipe sections: the first pipe section 1251, the first The second pipe section 1252, the third pipe section 1253, and the fourth pipe section 1254. The first pipe section 1251 is provided as a cold-carrying medium inlet a having the energy storage device 12, and the fourth pipe section 1254 is provided as a cold-carrying medium having an energy storage device. In the medium outlet b, the cooling medium enters the first pipe part from the inlet a, flows through the four pipe parts in sequence, and flows out from the outlet b. These four pipe sections are adjacent to each other, and this direction is defined as the adjacent direction X of the pipe sections. A heat exchange strengthening part is provided outside the heat exchange body, and a heat exchange strengthening part provided corresponding to a tube part is defined as a heat exchange strengthening unit. In the first embodiment, the heat exchange reinforcing part is a fin, and the heat exchange reinforcing unit is a fin. The fins are provided as linear or arc-shaped fins extending radially outward from the pipe portion, and adjacent fins of adjacent pipe portions are at least partially thermally connected to each other.

The heat exchange strengthening unit includes a plurality of heat exchange fins, that is, a plurality of fins 126 extending radially outwardly are provided outside each tube portion, and the fins 126 extend over the entire axial length of the tube portion, at least in part. The fins provide the tube portion with a vertical supporting force in the abutment direction and / or the abutment direction. This embodiment includes two types of fins: a connection fin and a support fin. The connecting fin is a first fin 1261 extending in the abutting direction of the tube portions between adjacent tube portions, the supporting fin includes a second fin 1262 extending in a vertical direction in the abutting direction of the tube portions, and The third fin 1263 extending between the part and the housing in the abutting direction of the tube part. As a preferred embodiment, divergent fins 1264 extending in a direction between the abutment direction of the tube portion and a direction perpendicular to the abutment direction are also included. The fins 126 are arranged around the tube portion, support the bent tube 125, and are carried on the surface of the casing facing the phase change material. When viewed in any radial section of the tube portion, the fins 126 form a sunflower pattern around the tube portion. Each tube portion includes two second fins 1262. The second fins can extend up to abut the inner surface of the housing 121, and become a ceiling mode, providing the tube portions with vertical support in adjacent directions. Each tube portion includes two first fins 1261. Adjacent first fins 1261 of adjacent tube portions are connected to each other. One of the first fins 1261 has a groove structure, and the other of the first fins 1261 has a convex shape. As a result, the first fin 1261 with a groove structure of the first pipe portion 1251 and the first fin 1261 with a convex structure of the second pipe portion are connected together by protrusions and grooves, and become a hand-in-hand mode, with the largest Increase the heat exchange area between the heat exchanger and the phase change material to the limit, to achieve the ideal cooling effect, and at the same time, provide the pipe section with a supporting force in the adjacent direction. The second tube portion 1252 and the third tube portion 1253, the third tube portion 1253, and the fourth tube portion 1254 have the same connection method. The third fin 1263 is located between the first tube portion 1251 and the casing 121 and may extend all the way to the inner surface of the casing 121 so as to support the bent tube 125, but it may not extend to the inner surface of the casing 121.

The fins 126 may adopt other structural forms, such as linear or arc fins. The specific form is shown in FIG. 8, as long as the contact area between the phase change material and the heat exchanger is increased. 7 (a) -7 (e) are schematic cross-sectional views of heat exchangers of the energy storage device in the second to sixth embodiments of the present invention. The fins may extend at least partially radially outward from the bending tube 125, or at least partially extend axially from the bending tube 125, or be distributed at different axial positions of the bending tube 125, or in a spiral manner Coiled around the body of the bending tube 125.

The heat exchanger 123 may have one heat exchange unit, two heat exchange units, three heat exchange units or more heat exchange units, and the inlet a of each heat exchange unit may be connected to the same pipeline to receive the cold medium, The outlet b is connected to another pipeline for returning the cooling medium. Adjacent heat exchange strengthening units of adjacent heat exchange units are at least partially thermally connected to each other. In the first embodiment, one heat exchanger has two adjacent heat exchange units, a first heat exchange unit 1231 and a second heat exchange unit 1232. Adjacent heat exchange strengthening units of adjacent heat exchange units are at least partially connected together, the first heat exchange unit and the second heat exchange unit are adjacent in the abutting direction X, and the fourth pipe portion 1254 of the first heat exchange unit The first fins 1261 and the first fins of the first tube portion 1251 of the second heat exchange unit 1232 are connected together by protrusions and grooves, and the two heat exchange units as a whole become a hand-in-hand mode. The third fin 1263 between the fourth tube portion 1254 of the second heat exchange unit 1232 and the case 121 may extend to the inner surface of the case 121 to support the bent pipe 125. Of course, the third fin 1263 may not be provided. Extends to the inner surface of the housing.

In order to accelerate the phase change of the phase change material, the fins 126 can be manufactured with a rough surface or through holes can be provided. In addition, the shell may also be filled with a crystal nucleus 127, and the crystal nucleus is preferably a honeycomb substance, such as honeycomb aluminum 127.

As shown in Figure 4-6, the cross section of the heat exchange unit includes a circular portion 1254 and multiple scattering line portions 1261-1264 around the circle. The circular portion 1254 is the heat exchange body, and the scattering line portion 1261-1264 is Thermal strengthening department. The scattering line portions 1261-1264 increase the contact area of the phase change material 122 and the heat exchanger 123. The scattering lines 1261-1264 are disposed around the circular portion 1254, and extend at least partially radially outward from the circular portion. The scattering lines 1261-1264 support the circular portion 1254 and extend to the boundary of the housing 121. Scattering lines are straight or bent lines extending radially outward from the circular portion. The cross section of the heat exchange unit includes a plurality of circular portions, and the first scattering line portions of adjacent circular portions are connected to each other. The heat exchanger 123 includes a plurality of groups of heat exchange units, the scattering line portion includes a first scattering line portion 1261, and the first scattering line portions 1261 of adjacent heat exchange units are connected to each other. The scattering line portion further includes a second scattering line portion 1262, and the second scattering line portion 1262 supports the circular portion and is carried on the housing. According to the previous record, in the first embodiment, the heat exchanger 112 includes two groups of heat exchange units 1231 and 1232. The heat exchange body is a bent pipe 125, and the bent pipe 125 includes a first pipe portion 1251, a second pipe portion 1252, and the like. The third tube portion 1253 and the fourth tube portion 1254, the heat exchange strengthening unit includes a plurality of heat exchange fins, a first fin 1261, a third fin 1263, a second fin 1262, and a divergent fin 1264. Corresponding to the cross section of the heat exchange unit, each heat exchange unit includes four circular portions 1251-1254, and the adjacent circular portions 1251 and 1252 pass through the scattering lines 1261 corresponding to the first fin and the adjacent first The scattering lines 1261 corresponding to the fins are connected together to form a hand-in-hand structure, and the scattering lines 1262 corresponding to the second fins extend to the boundary of the housing 121, thereby forming a ceiling structure. The scattering lines 1261 corresponding to the first fin, the scattering lines 1263 corresponding to the third fin, the scattering lines 1262 corresponding to the second fin, and the scattering lines corresponding to the diverging fin 1264 extend radially outward from the circular portion, respectively. The cross section constitutes the sun flower structure. The scattering lines 1261 corresponding to the first fins of the first heat exchange unit 1231 are connected to the scattering lines 1261 corresponding to the first fins of the adjacent second heat exchange unit 1232, and the two heat exchange units as a whole become a hand-in-hand mode. .

According to the temperature control requirements of the transported goods, different types of insulation equipment can be customized. The thermal insulation equipment may be a thermal insulation container (as shown in FIG. 2), a thermal insulation refrigerator, a thermal insulation cold storage room or a thermal insulation transport vehicle (as shown in FIG. 11). A plurality of energy storage devices 12 may be provided inside the thermal insulation box body 11, and the energy storage devices 12 is provided on the top and / or the side of the incubator body 11. The thermal insulation equipment can be used as a mobile cold storage, which can be directly used in a working environment without a cold storage; at the same time, it can be applied to the situation that the railway freight train cannot provide power, and it is also suitable for the public-rail combined transportation mode.

Fig. 2 is a kind of thermal insulation container, which is made of thermal insulation material polyurethane foam thermal insulation technology, which can increase the thermal insulation layer to effectively improve the thermal insulation effect. The insulated container adopts the international universal container size, such as 20 feet or 40 feet, and the container can accommodate at least 2 standard pallets in the width direction. An embedded steel plate is added to ensure that the top and end meet the load-bearing requirements. The energy storage device is fixed in the embedded steel box through a bracket. The thermal insulation container has an inlet joint 131 for receiving the cooling medium and an outlet joint 132 for outputting the cooling medium after use. The heat preservation container is provided with a charging and cooling pipe 13 therein, and the charging and cooling pipe 13 is connected to the inlet a and the outlet b of the heat exchanger 123 of the energy storage device 12. During the charging and cooling process, the heat exchanger 123 is continuously charged with a cooling medium that meets the temperature requirements, and the used cooling medium is returned to the cooling equipment, so that the cooling medium that meets the temperature requirements runs in the pipeline 13 The temperature of the phase change material 122 is reduced, and the phase change occurs when the temperature reaches the phase change point, and the cold capacity is stored. The flow rate into each energy storage device 12 can be adjusted by a valve provided in the middle portion of the pipeline 13 so as to ensure a consistent flow rate and achieve an ideal charging and cooling effect.

The thermal insulation equipment of the low-temperature storage and transportation system of the present invention uses a phase-change energy storage device for temperature control. Using the characteristics of the phase-change material, the phase-change material is charged and cooled first. It is not necessary to set a power source to achieve passive cooling; the operation safety is significantly improved, to avoid artificial interference during the transportation, and to avoid damage to the goods caused by the artificial destruction of the temperature environment. The energy storage device of the heat insulation equipment is provided with a heat exchange strengthening part, which increases the contact area of the phase change material and the heat exchanger, so that the heat insulation equipment can release the cold uniformly, the temperature fluctuation is small, the temperature control is accurate, and the cargo damage is reduced. Rate, which effectively guarantees the quality of the goods. In addition, the phase change material used in the energy storage device of the thermal insulation equipment has a large cold storage density, high latent heat value, non-toxic, non-corrosive, and no pollution; it is safe to use, non-flammable and explosive, stable cycle performance, and long service life. The energy storage device is mechanically connected to other structures, which facilitates maintenance and low transportation costs.

Charging and cooling equipment 2 is an important part of the low-temperature storage and transportation system, and is a source of cold energy for the thermal insulation equipment 1. The charging and cooling equipment 2 first cools the internal cooling medium, and then transfers the cooling medium that meets the predetermined requirements to the energy storage device 12 through the cooling and cooling pipeline and the pipeline 13 system of the heat preservation equipment, so that the The phase change material 122 undergoes a phase change. As shown in Figure 8-10, the cooling and cooling equipment 2 includes a first transmission device that outputs a cold carrier Z that meets predetermined requirements from the storage device for use, and transmits the used cold carrier Y to be stored to the storage after use. Device; storage device 23, the storage device 23 is used for accommodating the cooling medium and keeping the cooling medium within a certain temperature range. The storage device in the first embodiment is a heat preservation water tank 23; the second transmission device receives the storage device 23 The cold carrier medium Y is cooled and the cooled cold carrier medium Z that meets the predetermined requirements is transmitted to the storage device. The heat-insulating water tank 23 includes at least a first storage unit 231 and a second storage unit 232. The first storage unit is configured to accommodate a cooling medium Z that meets a predetermined requirement, such as an aqueous solution of ethylene glycol, and the second storage unit is configured to accommodate a cooling medium Carrying cold medium Y. A third storage unit or more storage units may also be included.

In the first embodiment, the first transmission device includes an external circulation pump 21 and an external circulation pipeline 22, and the second transmission device includes an internal circulation pump 24 and an internal circulation pipeline 25. The external circulation pump 21 outputs the cooling medium Z that meets the predetermined requirements from the first storage unit 231 through the external circulation pipe 22 for use, and transmits the used cooling medium Y to be cooled to the second storage unit 232 after the use. . There is a refrigeration unit 26 on the transmission path of the second transmission device. The internal circulation pump 24 receives the cooling medium Y to be cooled from the second storage unit 232 and sends the cooling medium Y to be cooled to the refrigeration unit 26 through the internal circulation pipe 25. Refrigeration is performed so that the temperature of the cooling medium meets the predetermined requirements, and the inner circulation pipeline 25 continues to transmit the cooled cooling medium Z that meets the predetermined requirements to the first storage unit 231.

The cooling and cooling equipment 2 implements the cooling and cooling mode of the cooling and cooling equipment through external circulation, and the cooling and cooling equipment 1 is charged and cooled. The first transmission device continuously inputs the cold storage medium Z of the first storage unit 231 that meets the predetermined requirements through the external circulation pump 21 to the inlet joint 131 of the thermal insulation device 1 for receiving the cold storage medium through the outer circulation pipeline 22, The cold medium enters the heat exchanger 123 of the energy storage device 12 through the pipeline 13 of the thermal insulation device 1, performs heat exchange with the phase change material 122, and introduces the cold energy into the phase change material 122. The used cooling medium Y to be cooled is output through the outlet joint 132 of the thermal insulation device 1; the outer circulation pipe 22 of the first transmission device transmits the used cooling medium Y to be cooled, and is passed through the second storage unit. The spraying device at the end of the external circulation pipe 22 is returned to the second storage unit 232.

The cooling and cooling equipment 2 realizes the cooling mode of the cooling and cooling equipment 2 through an internal cycle, and cools the used cooling medium Y to be cooled into a cooling medium Z that meets predetermined requirements. The internal circulation pump 24 of the second transmission device continuously inputs the cold storage medium Y to be cooled of the second storage unit 232 into the plate heat exchanger of the refrigeration unit 26 through the internal circulation pipe 25, and the plate heat exchanger introduces the cooling capacity Into the cold storage medium, after being cooled, the cold storage medium continues to be transmitted through the internal circulation pipeline 25, and enters the first storage unit 231 through a spraying device located at the end of the pipeline on the top 231 of the first storage unit, and reciprocates. Finally, the temperature in the heat preservation water tank 23 as a whole is reduced to a target predetermined temperature. The heat preservation water tank 23 is a box structure. There is a partition 233 in the box. The partition 233 divides the heat preservation water tank 23 into a first storage unit 231 and a second storage unit 232. The first storage unit 231 and the second storage unit 232 may be fluid. Connected. The first storage unit 231 and the second storage unit 232 are separated from each other by a partition plate 233, so that the used cooling medium Y to be cooled and the cooling medium Z that meets the predetermined requirements are generally separated. A mass flow is formed in the storage space, and the returned cooling medium is quickly and uniformly sprayed into the storage unit through a spray device, which can enhance the mass flow inside the first storage unit and the second storage unit, thereby enabling each storage of the thermal water tank The temperature of the medium in the unit is more uniform. The temperature of the cooling medium Z that meets the predetermined requirements output by the first storage unit 231 is uniform, which is convenient for improving the cooling efficiency. The second storage unit 232 receives the used cooling medium Y that is relatively cold after being used, and sends it to the refrigeration unit. Refrigeration is convenient for improving cooling efficiency.

As shown in FIG. 9, the first storage unit 231 is provided with at least one first liquid discharge pipe 221 for outputting the cold medium Z that meets predetermined requirements to the outside and a predetermined compliance for receiving transmission from the second transmission device. The first liquid inlet line 242 of the required cooling medium Z. The second storage unit 232 is provided with a second liquid outlet pipe 241 for outputting the used cooling medium Y to be cooled out and at least one second liquid inlet for receiving the used cooling medium Y to be cooled.管 222。 222. FIG. 10 shows the outlet joints of the inlet and outlet liquid pipes on the insulated water tank 23, and each outlet pipe is connected to the inside of the storage unit, where the first liquid outlet pipe 221 and / or the second liquid outlet pipe 241 are provided At the bottom of the storage unit. The first liquid inlet line 242 and / or the second liquid inlet line 222 are disposed on the upper part of the storage unit.

As shown in Fig. 9-10, the charging and cooling mode works as follows. The external circulation pump 21 of the first transmission device continuously passes the cold storage medium Z of the first storage unit 231 that meets the predetermined requirements through the first liquid outlet pipe 221 and The external circulation pipeline 22 is input to the inlet joint 131 of the heat insulation equipment 1 for receiving the cold medium, and the cold medium enters the heat exchanger 123 of the energy storage device 12 through the pipeline 13 of the heat insulation equipment 1, and the phase change material 122 performs heat exchange and introduces the cold energy into the phase change material 122. The used cooling medium Y to be cooled is output through the outlet joint 132 of the thermal insulation device 1; the outer circulation pipe 22 of the first transmission device transmits the used cooling medium Y to be cooled, and is passed through the second storage unit. The spraying device at the end of the second liquid inlet pipe 222 flows back to the second storage unit 232. The working mode of the cooling mode is as follows. The internal circulation pump 24 of the second transmission device continuously inputs the cold medium to be cooled Y of the second storage unit 232 to the refrigeration unit 26 through the second liquid outlet pipe 241 and the internal circulation pipe 25. In the plate heat exchanger, the plate heat exchanger introduces the cold energy into the cold carrier medium. After the cold carrier medium is refrigerated, it continues to be transmitted through the internal circulation pipe 25 and passes through the first inlet unit 231 placed on the top of the first storage unit. The spraying device at the end of the liquid pipe 242 enters the first storage unit 231, and reciprocates, and finally reduces the temperature in the heat preservation water tank 23 as a whole to a target predetermined temperature.

The cooling and cooling device 2 realizes a cooling and cooling mode through an external circulation, outputs a cooling medium Z that meets predetermined requirements, transmits the cooling capacity to the energy storage device 12 of the thermal insulation device 1, and receives the used cooling medium Y after cooling. The cooling and cooling device 2 realizes a cooling mode through internal circulation, and cools the used cooling medium Y after returning to the heat preservation water tank 23 into a cooling medium Z that meets predetermined requirements, so that it can be applied to cooling and cooling conditions. The working mode of the cooling and cooling device 2 can be a direct cooling mode and an indirect cooling mode. The storage device of the charging and cooling equipment 2 can store a large amount of cooling medium, so that it can charge a single or multiple thermal insulation equipment after the large amount of cooling medium has cooled to a predetermined temperature; in the direct charging and cooling mode, the cooling mode is turned on at the same time. And charge and cool mode, to achieve the effect of fast charge and cold. In the indirect charging and cooling mode, the cooling module and the charging and cooling mode are performed separately.

The charging and cooling device 2 may further include an electric control box; the first liquid inlet pipe 221 and / or the second liquid outlet pipe 241 and / or the first liquid inlet pipe 242 and / or the second liquid inlet pipe 222 A temperature sensor and a flow sensor are arranged nearby; the sensor is connected to the electric control box, and the charging and cooling equipment is automatically controlled by PLC programming. You can use the display device to view the cooling and cooling flow of the cooling and cooling equipment, the temperature of the liquid outlet pipe and the liquid inlet pipe, the temperature of the cooling medium at each position of the water tank, and the average temperature of the cooling medium. status information.

According to the different cooling and cooling requirements, with the information monitoring system, you can build a cooling and cooling network and customize cooling and cooling solutions. The cooling and cooling equipment can be miniaturized and made into a mobile cooling and cooling equipment. Minimize the heat preservation water tank, place it in a container with a high-efficiency refrigeration unit and a control cabinet, and install heat insulation materials in the container and / or outside the heat preservation water tank to form a cold-filled container, which will require a certain amount of cooling medium at high speed Refrigerate and charge repeatedly. Charging and cooling containers use standard container sizes such as 20 feet or 40 feet, and are transportable. The heat preservation water tank, refrigeration unit and control cabinet are placed in the compartment, and heat insulation materials are provided in the compartment and / or outside the heat preservation water tank to form a cold-filled vehicle that can be replenished with the movement of the vehicle; suitable for short-distance trunk transportation Recharge cold sources at temporary cargo sources such as insufficient radiation areas in charging and cooling stations, and can replenish cooling capacity for two insulation boxes at the same time. A heat preservation layer is provided on the outside of the heat preservation water tank, and the heat preservation layer can also be provided inside the flushing container and the refrigerated car, so that the heat preservation water tank has a good thermal insulation effect. In actual work, the cooling medium stored in the heat preservation water tank is within 24 hours. The temperature change does not exceed 1 ° C.

The cooling and cooling equipment can also be large-scaled and made into the form of cooling and cooling stations or cooling and cooling piles. The cooling and cooling stations are suitable for railway freight yards, enterprise warehouses, e-commerce warehouses with centralized cargo, or centralized turnaround places or logistics bases in insulated boxes. The prepared cold is filled into the equipment in the form of a cooling medium through quick-installed pipes and cold-filling piles, which can simultaneously meet the cooling and cooling requirements of multiple thermal insulation equipment. The small charging and cooling pile can be matched with the charging pile of new energy vehicles to match the interface of the charging and cooling pile and the interface of the charging pile, or use the power source of the charging pile as a power source to charge and cool a single insulation device.

The source of cold energy is not only cooled by the equipment or the cooling station's own refrigeration unit, but also absorbed and transformed by an external cold source, such as collecting and using the lost cold energy of the liquefied gas industry. Greatly improve the cold economic effect and reduce costs. At the same time, the refrigeration unit can also prepare the cooling capacity in advance through low-cost electricity between the valleys, reducing the overall cost of the power grid and the cost of charging and cooling.

The structure of the charging and cooling equipment of the low-temperature storage and transportation system of the present invention is reasonable in structure and the temperature of the medium in the thermal insulation water tank is uniform, which can significantly improve the overall efficiency of cooling and cooling. At the same time, the charging and cooling equipment is separated from the thermal insulation equipment, which separates the refrigeration and charging and cooling conditions. The interior of the thermal insulation equipment is physical refrigeration, and no failure of mechanical structure or electrical control equipment occurs, which reduces the equipment failure rate of the thermal insulation equipment during transportation. It is convenient for maintenance, meanwhile, it is impossible to artificially close or prevent the phase change material from releasing the cold quantity, to prevent the occurrence of cold chain disconnection, and the transportation is safe and reliable.

The control system 3 of the low-temperature storage and transportation system of the present invention has the functions of condition monitoring, path planning, and settlement and payment, and is the basis for the low-temperature storage and transportation system to realize the status monitoring of the thermal insulation equipment and its energy storage device, and the system information processing platform. The information control system 3 includes an information acquisition module 31 and a central processing unit 32. The information acquisition module 31 acquires the status data and position data of the thermal insulation equipment and the cooling and cooling equipment. The information acquisition module 31 is located in the equipment to be monitored (including the thermal insulation equipment and the cooling and cooling equipment). Board, main control device, power supply, antenna and other devices, among which the main control device sends status data and position data to the central processing unit 32 through a wireless communication module, where the central processing unit 32 is a remote server 32 and the central processing unit Obtain planning data of the thermal insulation equipment and / or cooling and cooling equipment during transportation based on the status data and location data.

The condition monitoring module performs condition monitoring on the thermal insulation equipment and the cooling and cooling equipment. The main body of the thermal insulation equipment constitutes a storage space for the articles. In order to ensure that the items stored in various parts of the thermal insulation equipment are in a suitable environment, multi-point monitoring of the thermal insulation equipment is needed, and multiple temperature sensors and humidity sensors are evenly arranged in the storage space. . The energy storage device is an important component to ensure the normal operation of the thermal insulation equipment. The state of the phase change material needs to be monitored. A plurality of temperature sensors are evenly arranged inside the energy storage device. In order to monitor the main control device, a temperature sensor and a humidity sensor are also built in the main control device. The charging and cooling equipment is provided with a plurality of temperature sensors, and a flow sensor is also provided in the outlet pipeline of the cooling medium that meets the predetermined requirements.

Calibrate each sensor to clarify the corresponding relationship between the sensor's resistance value and temperature and humidity values. Each sensor transmits the change of resistance value in the form of electrical signals to the acquisition board through a cable. Each acquisition board is connected to the main control device and the power supply through a multi-core cable. The data of each acquisition board is transmitted to the main control in the form of electrical signals. The device, the chip in the main control device compiles the program in advance, and calculates the different resistance values into temperature or humidity through the previous calibration work. The temperature and humidity information of each device is transmitted by the antenna device to the remote server in the form of data packets. The server builds a network platform to crack and store data packets. Customers can log in to view device information via the Internet. Including probe temperature at each location of the energy storage device, ambient temperature and humidity in the insulation equipment. The server stores data for a certain period of time as a backup to achieve traceability.

The remote server 32 includes an algorithm module that calculates the cold storage capacity of the energy storage device based on the temperature and humidity information of the received energy storage device, so as to determine whether the energy storage device needs to be recharged, how much cold energy is needed, or how much How long does it take to complete the charging and cooling, and remind when it is necessary to provide a planned charging and cooling path. According to the above description, it can be seen that the status data obtained by the remote server includes one or more of temperature data, humidity data, cooling capacity data, and cooling and cooling device temperature data and flow data. Through the algorithm module, one or more of the cooling time data, the cooling position data, and the cooling capacity data for the cooling equipment to cool the thermal insulation equipment can be planned.

Use the path planning module to plan the cooling and cooling paths for the thermal insulation or cooling and cooling equipment. There is a positioning module on the thermal insulation equipment or mobile cooling equipment. The positioning module transmits the location information of the thermal insulation equipment or the mobile cooling and cooling equipment to the path planning module of the remote server. The path planning module stores the above information, and also stores the location distribution information of the cooling and cooling stations or cooling and cooling piles, which can obtain the railway network. Data, highway network data, and weather network data, route planning based on actual conditions. The path planning module indicates that the thermal insulation equipment needs to be recharged according to the cooling capacity information of the thermal insulation equipment energy storage device transmitted to the remote server, and plans the cooling pathway for the thermal insulation equipment. The railway network data, highway network data, and weather network data are used to match the optimal path for the thermal insulation equipment to the cooling station or to the cooling pile, or the optimal path for the mobile cooling equipment to the thermal insulation equipment. When the cooling equipment is charging and cooling, the cooling equipment can control the cooling location, the cooling time, the cooling flow and the cooling capacity of the cooling equipment.

The path planning module can also plan the transportation path of the thermal insulation equipment, and implement the transportation path planning of the thermal insulation equipment based on the customer's item transportation needs and the object transportation destination.

According to the above description, it can be seen that the location data obtained by the remote server includes the location data of the heat preservation equipment and the location data of the cooling and cooling equipment, and the remote server plans the path of the insulation equipment or the cooling and cooling vehicle according to the above data. Since the data is transmitted to the remote server, the customer can log in to check the shipping location of the item through the Internet.

The settlement payment module realizes online settlement of transportation expenses or charging and cooling charges. The settlement module includes a payment module and a collection module. Customers use the payment module to pay for transportation costs online, and transportation personnel use the payment module to collect payments online. The transportation personnel can pay the cooling and cooling expenses online through the payment module.

The information system can monitor the environment inside the insulation equipment in real time, return the status information of the insulation equipment, and implement dynamic management of the system. At the same time, combined with railway and highway road network data and weather network data, it realizes the planning and cooling calculation of the heat preservation box transportation path, issues cold warning, and integrates the server platform to achieve status monitoring, path planning, settlement and payment, etc. Kind of function.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims (30)

1. An energy storage device includes a casing (121), which defines a space for accommodating a phase change material (122), and a heat exchanger (123), where the heat exchanger (123) is disposed at The heat exchanger (123) includes at least one group of heat exchange units (1231, 1232), and the heat exchange unit (1231) 1231, 1232) includes a heat exchange body and a heat exchange reinforcement portion, and the heat exchange reinforcement portion enhances heat conduction between the phase change material (122) and the heat exchange body.
2. The energy storage device according to claim 1, wherein the heat exchange reinforcing portion increases a contact area between the phase change material (122) and the heat exchanger (123), and is disposed around the heat exchange body .
3. The energy storage device according to claim 1, wherein the heat exchange reinforcing portion is provided to extend at least partially radially outward from the heat exchange body.
4. The energy storage device according to claim 1, wherein the heat exchange reinforcing portion is provided to extend at least partially axially from the heat exchange body.
5. The energy storage device according to claim 1, wherein the heat exchange reinforcing portions are arranged at different axial positions of the heat exchange body.
6. The energy storage device according to claim 1, wherein the heat exchange reinforcing portion is coiled around the heat exchange body in a spiral manner.
7. The energy storage device according to claim 1, wherein a cross section of the heat exchange unit includes at least one circular portion and a plurality of scattering line portions around the circle, and the circular portion is the heat exchange The body, the scattering line part is the heat exchange strengthening part.
8. The energy storage device according to claim 7, wherein the scattering line portion extends at least partially radially outward from the circular portion.
9. The energy storage device according to claim 7, wherein a cross section of the heat exchange unit includes a plurality of circular portions, and first scattering line portions of adjacent circular portions are connected to each other.
10. The energy storage device according to claim 7, wherein the heat exchanger (123) comprises a plurality of groups of heat exchange units, and the scattering line portion includes a first scattering line portion, and the first A scattering line portion is connected to each other.
11. The energy storage device according to claim 7, wherein the scattering line portion includes a second scattering line portion, and the second scattering line portion supports the circular portion and is carried on the housing.
12. The energy storage device according to claim 1, wherein the heat exchange reinforcing portion supports the heat exchange body and is carried on a surface of the casing (121) facing the phase change material (122) .
13. The energy storage device according to any one of claims 2-12, wherein the heat exchange body includes at least one tube portion (1251, 1252, 1253, 1254).
14. The energy storage device according to claim 13, wherein the heat exchange body comprises a plurality of pipe portions (1251, 1252, 1253, 1254) connected in sequence, and the heat exchange enhancement portion includes The heat exchange strengthening units of the tube part, the adjacent heat exchange strengthening units are at least partially thermally connected to each other.
15. The energy storage device according to claim 14, wherein the adjacent heat exchange strengthening units are at least partially connected together.
16. The energy storage device according to claim 14, wherein the heat exchange body is provided as a bent tube (125), the bent tube includes one or more U-shaped bends, and the plurality of tube portions (1251, 1252, 1253, 1254) are straight pipe portions of the bent pipe (125), and the plurality of pipe portions (1251, 1252, 1253, 1254) are connected by U-shaped portions.
17. The energy storage device according to claim 16, wherein the heat exchange enhancement unit comprises a plurality of heat exchange fins.
18. The energy storage device according to claim 17, wherein the heat exchange fins are provided as linear or arc fins extending radially outward from the tube portion.
19. The energy storage device according to claim 17, wherein the heat exchange strengthening unit includes fins extending vertically in the abutment direction (X) and / or the abutment direction (X) of the tube portion, respectively. Sheet, at least part of the fins provides the tube portion with a vertical supporting force in the abutting direction (X) and / or the abutting direction (X).
20. The energy storage device according to claim 19, wherein the fins extending in the abutting direction of the tube portions include fins connected between the adjacent tube portions.
21. The energy storage device according to claim 19, wherein the fins extending in the abutting direction of the tube portion include a tube portion and the casing (121) supported near the casing (121). Between the fins.
22. The energy storage device according to claim 20, wherein the fins between the adjacent tube portions are connected to each other.
23. The energy storage device according to claim 22, wherein the fins between the adjacent tube portions are connected together by means of snap-fitting, engaging or overlapping.
24. The energy storage device according to claim 23, wherein the fins between the adjacent tube portions extend over the entire axial length of the tube portions.
25. The energy storage device according to claim 21, wherein the fins extending in the abutting direction of the pipe portion and / or the fins extending vertically in the abutting direction are extended to abut the housing (121) faces the surface of the phase change material (122).
26. The energy storage device according to any one of claims 1-12 or 14-20, wherein the energy storage device comprises a plurality of groups of heat exchange units (1231, 1232), and adjacent heat exchange units (1231, 1232) Thermally conductively connected.
27. The energy storage device according to claim 26, wherein adjacent heat exchange reinforcing units of the adjacent heat exchange units (1231, 1232) are at least partially thermally connected to each other.
28. The energy storage device according to claim 27, wherein adjacent heat exchange reinforcing units of the adjacent heat exchange units (1231, 1232) are at least partially connected together.
29. The energy storage device according to claim 1, wherein a crystal nucleus for accelerating phase change of the phase change material (122) is further provided in the casing (121).
30. The energy storage device according to claim 29, wherein the crystal nuclei have a honeycomb structure.

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