Integrated energy storage device

Abstract

The invention discloses an integrated energy storage device which comprises an energy storage box and a regenerator mechanism. The energy storage box body comprises a phase change medium cavity structure, an energy-carrying medium heat exchange cavity and an energy-carrying medium inlet cavity which are integrated in the energy storage box body; the phase change medium cavity structure is used for filling a phase change medium into the regenerator mechanism; the energy-carrying medium inlet cavity is used for introducing a cold medium and a hot medium into the energy-carrying medium heat exchange cavity; the regenerator mechanism comprises a first power strip header structure and a second power strip header structure which are integrally installed in the energy storage box and communicate with the phase change medium cavity structure, and main bodies of the first power strip header structure and the second power strip header structure are located in the energy carrying medium heat exchange cavity. And the phase change medium filled in the first power strip header structure and the second power strip header structure performs phase change energy storage after performing heat energy exchange with the cold medium and the hot medium. The integrated structure solves the problems that traditional equipment is large in size and weight, low in cold storage efficiency, high in machining difficulty and the like, and the energy storage weight ratio can reach 69.0 kJ / kg and is improved by 60%.

Description

Technical Field

[0001] This invention belongs to the field of phase change energy storage and heat dissipation technology, and particularly relates to an integrated energy storage device. Background Technology

[0002] With the increasing development of industry, equipment based on technologies such as lasers, electromagnetics, and microwaves has achieved a series of developments due to its unique advantages; in particular, high-power equipment has broad application prospects.

[0003] However, while meeting the requirements of high integration, small size and weight, and high mobility, such equipment faces the problem of high heat flux density and large heat dissipation. Therefore, cooling equipment for dissipating heat from such equipment is particularly important.

[0004] These types of equipment are characterized by intermittent operation and typically employ liquid cooling technology with a cold storage system. A large cold storage container is used to store the cold storage medium, usually an aqueous solution of ethylene glycol or deionized water. The cold storage is achieved by utilizing the sensible heat generated by the temperature drop. The volume of the cold storage medium is determined by the cooling capacity and its temperature difference. Due to the relatively low sensible heat energy density, both the volume of the cold storage container and the weight of the cold storage medium are relatively large.

[0005] Compared with non-phase change cold storage media, the latent heat of phase change cold storage materials can significantly improve energy storage efficiency, and there are already relevant patents and literature reports on this.

[0006] In terms of process flow, existing phase change cold storage devices generally employ two independent devices: a phase change cold storage unit and a buffer solution tank. These devices are connected by electric valves, manual valves, temperature / pressure / flow monitoring sensors, and pipelines. A pump drives the liquid circulation in the buffer solution tank to transfer the heat and cold energy of the phase change material in the phase change cold storage unit, ultimately achieving cooling of the end equipment. The control and process are relatively complex.

[0007] Furthermore, phase change accumulators have various structural forms. Conventional phase change accumulators have low heat exchange areas, and the cold storage medium cannot meet the requirement of rapid release of cold energy in a short time. Complex accumulators use microchannel structures to increase the heat exchange area, but the manufacturing process is extremely demanding, generally using welding, assembly, or molding methods, which is difficult to process. Numerous welds can easily leak, leading to communication between the phase change medium and the energy-carrying medium, causing the entire phase change accumulator to fail. Detailed structural designs of phase change accumulators have not been reported; therefore, optimizing phase change accumulator devices by adopting a highly integrated, highly reliable, and weight- and volume-reduced approach is crucial. Summary of the Invention

[0008] Based on the above background, the purpose of this invention is to provide an integrated energy storage device.

[0009] To achieve the above objectives, the present invention adopts the following technical solution: An integrated energy storage device includes an energy storage tank and a cold storage mechanism; The energy storage box includes a phase change medium cavity structure, an energy-carrying medium heat exchange cavity, and an energy-carrying medium inlet cavity integrated within the energy storage box. The phase change medium cavity structure is used to fill the cold storage mechanism with the phase change medium, and the energy-carrying medium inlet cavity is used to pass the cold and hot media into the energy-carrying medium heat exchange cavity; The cold storage device includes a first plug-in manifold structure and a second plug-in manifold structure integrated and installed in the energy storage box. The first plug-in manifold structure and the second plug-in manifold structure are connected to the phase change medium cavity structure. The main bodies of the first and second plug-in manifold structures are located in the heat exchange chamber of the energy-carrying medium, and exchange heat energy with the cold and hot media in the heat exchange chamber of the energy-carrying medium. The surface oxide film of the power strip manifold is first removed by pickling or electrolysis. Then, tin wire containing a high proportion of silver, copper and tin is soldered to the surface of the titanium alloy pipe at a temperature range of 350~400℃.

[0010] The phase change medium filled in the first and second socket manifold structures changes from solid to liquid after exchanging heat with the cold and hot media.

[0011] Preferably, the phase change medium cavity structure includes an upper phase change medium cavity located at the top of the energy storage box and a left phase change medium cavity connected to the left side of the energy storage box. The upper phase change medium cavity is connected to the upper end of the left phase change medium cavity.

[0012] Preferably, the first power strip manifold structure includes a plurality of horizontally arranged horizontal power strip manifolds; The feed end of the horizontal manifold is connected to the left phase change medium cavity; The second plug-in manifold structure includes several vertically arranged vertical plug-in manifolds; the feed end of the vertical plug-in manifolds is connected to the upper phase change medium cavity.

[0013] Preferably, the energy-carrying medium inlet cavity is located on the right side of the energy storage box, and the energy-carrying medium inlet cavity includes a right end plate forming the outer structure of the cavity and a first maintenance shell as part of the energy storage box shell; It also includes the right-side perforated plate that forms the inner structure of the cavity; The right-side perforated plate has a first support hole for fixing the horizontal plug manifold and a diversion hole for diverting the energy-carrying medium. The top of the energy-carrying medium inlet cavity is connected to a pressure balance tube and an inlet tube for filling the energy-carrying medium.

[0014] Preferably, the right end plate is connected to a cooling medium inlet pipe for pumping cooling medium and a heating medium inlet pipe for pumping heating medium.

[0015] Preferably, the upper phase change medium cavity includes a top end plate forming the outer structure of the cavity and a second maintenance shell as part of the energy storage box shell; And a top perforated plate forming the inner structure of the cavity, wherein a second support hole for fixing the vertical plug manifold is provided on the top perforated plate; the top perforated plate of the vertical plug manifold is sealed; The top of the top end plate is connected to a first filling pipe for filling the vertical plug manifold with phase change medium.

[0016] Preferably, the top end plate has a maintenance hole, which is sealed by a detachably assembled maintenance end plate.

[0017] Preferably, the left phase change medium cavity includes a left end plate forming the outer structure of the cavity and a third maintenance shell as part of the energy storage box shell; It also includes the left-side perforated plate that forms the inner structure of the cavity; The left side perforated plate has a third support hole for fixing the horizontal plug manifold; the horizontal plug manifold is sealed by the left side perforated plate. The left orifice plate is connected to a second filling pipe for filling the horizontal plug manifold with phase change medium and a venting pipe for discharging air.

[0018] Preferably, the energy-carrying medium heat exchange cavity is formed by a front end plate and a rear end plate forming the outer structure of the cavity; And the left and right orifice plates that form the inner structure of the cavity, and the bottom orifice plate that forms the inner structure of the cavity; The bottom perforated plate is provided with a fourth support hole for fixing the vertical plug manifold; The front end plate is connected to a cooling medium outlet pipe and a heating medium outlet pipe.

[0019] Preferably, the bottom of the energy storage box is provided with a bottom vent cavity that communicates with the heat exchange chamber of the energy-carrying medium; the lower end of the vertical insertion manifold is located in the bottom vent cavity; The bottom venting cavity includes a bottom end plate forming the outer structure of the cavity and a shell portion on the energy storage box. It also includes a bottom perforated plate that forms the inner structure of the cavity, and the bottom perforated plate has an energy-carrying medium flow hole that connects to the bottom venting cavity; Several flow-guiding energy-carrying medium baffles are fixedly connected to the inner wall of the bottom venting cavity. The bottom venting cavity is connected to a venting pipe.

[0020] The present invention has the following beneficial effects: 1. Through structural coupling design, the integrated high-efficiency energy storage device is structurally designed into a right energy medium inlet cavity, a left phase change medium cavity, an upper phase change medium cavity, an energy medium heat exchange cavity, a bottom vent cavity, a vertical plug-in manifold, a horizontal plug-in manifold, an interface, and a phase change medium; each cavity is connected as needed.

[0021] The left and upper phase change medium cavities have connecting holes to achieve pressure and volume balance of the phase change medium inside the two cavities, avoiding damage to the manifold caused by volume or pressure changes. The left and upper phase change medium cavities are independent from the right energy-carrying medium inlet cavity and the bottom vent cavity, with no medium interaction.

[0022] The heat-carrying and cooling media are diverted by a designed orifice plate and then deflected by baffle fins in the heat exchange cavity of the energy-carrying medium to achieve counter-flow, thereby improving heat transfer efficiency.

[0023] The control and process flow have been optimized. The two separate devices of phase change accumulator and buffer solution tank in the conventional process have been unified into an integrated high-efficiency energy storage device. This eliminates the need for electric valves, manual valves, temperature / pressure / flow monitoring devices, and connecting pipelines between the buffer solution tank and the phase change accumulator, thereby improving product reliability.

[0024] 2. The integrated energy storage box structure disclosed in this invention adopts horizontal and vertical plug-in manifolds, and uses titanium alloy U-shaped tubes in an equilateral triangular fork arrangement. The plug-in manifolds are first deoxidized by pickling or electrolysis, and then tin wire containing a high proportion of silver, copper and tin is welded to the surface of the titanium alloy tube at a temperature range of 350~400℃, which effectively improves the heat exchange area.

[0025] The space is utilized to the maximum extent in both the horizontal and vertical dimensions, increasing the storage rate of phase change materials by about 50%; the processing technology of horizontal and vertical manifolds is mature, the quality is reliable, and the volume and weight are reduced.

[0026] It solves the problems of large size and weight, low cold storage efficiency and high processing difficulty of traditional equipment, and the energy storage weight ratio can reach 69.02kJ / kg, which is 60% higher than that of traditional non-phase change cold storage. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0028] Figure 1This is a front view of the integrated high-efficiency energy storage device in an embodiment of the present invention; Figure 2 As described in the embodiments of the present invention Figure 1 View A; Figure 3 As described in the embodiments of the present invention Figure 1 View from direction D; Figure 4 As described in the embodiments of the present invention Figure 1 View from direction E; Figure 5 As described in the embodiments of the present invention Figure 1 Structural view along section BB; Figure 6 As described in the embodiments of the present invention Figure 1 Structural view along the CC section; Figure 7 This is a structural view of the cold accumulator mechanism in an embodiment of the present invention; Figure 8 As described in the embodiments of the present invention Figure 1 Structural view along section HH; Figure 9 As described in the embodiments of the present invention Figure 1 Structural view along the GG section line.

[0029] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0031] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0032] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0033] Example 1 like Figure 1-9 As shown, an integrated energy storage device includes an energy storage box and a cold storage mechanism; the energy storage box includes a phase change medium cavity structure, an energy carrier medium heat exchange cavity 4, and an energy carrier medium inlet cavity 1 integrated within the energy storage box.

[0034] By integrating the phase change medium cavity structure, the energy-carrying medium heat exchange cavity 4, and the energy-carrying medium inlet cavity 1 into a single energy storage tank, an integrated energy storage tank structure is formed. Compared to traditional energy storage tank structures, the integrated structure reduces a significant number of pipes, valves, temperature control systems, pressure detection systems, and other components. Not only is it more economical in terms of manufacturing costs, but more importantly, this single integrated structure offers greater mobility and flexibility, making it more suitable for complex operational needs, such as convenient transportation.

[0035] The main working principle of the energy storage tank is as follows: the phase change medium cavity structure is used to fill the cold storage mechanism with the phase change medium. At the same time, the energy medium inlet cavity 1 is used to introduce cold and hot media into the energy medium heat exchange cavity 4. In the energy medium heat exchange cavity 4, the phase change medium stored in the cold storage mechanism exchanges heat with the energy medium.

[0036] Specifically, when the cooling medium enters the heat exchange chamber 4, the accumulator mechanism (phase change medium) immersed in the cooling medium exchanges heat with it, causing the phase change medium to change from a liquid to a solid state. Conversely, when the heating medium enters the heat exchange chamber 4, the phase change medium absorbs heat and returns to a liquid state. This process rapidly cools the heating medium to meet the operational requirements of the equipment.

[0037] Because the entire heat exchange process is conducted through the aforementioned integrated energy storage tank, the energy-carrying cold and hot media and the phase change medium can exchange heat in a more efficient and energy-saving manner. This integrated energy storage tank achieves higher heat exchange efficiency, cooling the energy-carrying hot media and exchanging heat with the energy-carrying cold media for energy storage in a shorter time. Therefore, this integrated energy storage tank can more quickly and sensitively process the heat energy generated by the working equipment.

[0038] Meanwhile, the aforementioned cold storage mechanism includes a first and a second manifold structure integrated and installed within the energy storage tank. These two manifold structures are connected to the phase change medium cavity structure. The main bodies of the first and second manifold structures are located within the energy-carrying medium heat exchange cavity 4, exchanging heat energy with the cold and hot media within the cavity. The phase change medium filled within the first and second manifold structures undergoes phase change energy storage after interacting with the cold and hot energy-carrying media.

[0039] Example 2 like Figure 1-9 As shown, this embodiment, based on the structure of embodiment 1, specifically discloses the specific structure of the phase change medium cavity structure.

[0040] Specifically, the phase change medium cavity structure consists of two parts: the upper phase change medium cavity 3 located at the top of the energy storage box, and the left phase change medium cavity 2 located on the left side of the energy storage box.

[0041] The upper phase change medium cavity 3 is connected to the upper end of the left phase change medium cavity 2. Specifically, a communication port 27 is provided at the upper end of the left perforated plate 21, and the upper phase change medium cavity 3 and the left phase change medium cavity 2 are connected through the communication port 27.

[0042] The reason for the connection between the upper phase change medium cavity 3 and the left phase change medium cavity 2 is that the functions of both the upper phase change medium cavity 3 and the left phase change medium cavity 2 are to fill the first plug-in manifold structure and the second plug-in manifold structure with phase change medium.

[0043] Example 3 like Figure 1-9 As shown, this embodiment, based on the structure of embodiment 2, specifically discloses the specific structure of the upper phase change medium cavity 3 and the left phase change medium cavity 2, as well as the working principle of adding phase change medium into the first plug-in manifold structure and the second plug-in manifold structure.

[0044] Specifically, the first socket manifold structure includes several horizontally arranged horizontal socket manifolds 7; the horizontal socket manifolds 7 are specifically made of φ10x0.5mm titanium alloy U-shaped pipes.

[0045] The feed end of the horizontal plug-in manifold 7 is connected to the left phase change medium cavity 2; the phase change medium is filled into the horizontal plug-in manifold 7 through the left phase change medium cavity 2.

[0046] Therefore, the left-side phase change medium cavity 2 includes a left-side end plate 22 forming the outer structure of the cavity and a third maintenance shell 23 serving as part of the energy storage tank shell. It also includes a left-side perforated plate 21 forming the inner structure of the cavity.

[0047] That is, the left side of the energy storage box is formed by the third maintenance shell 23, which is part of the shell, the left end plate 22, and the left perforated plate 21 located inside the box, forming a relatively sealed cavity, which is the left phase change medium cavity 2.

[0048] A third support hole 24 for fixing the horizontal plug manifold 7 is provided on the left side orifice plate 21; the horizontal plug manifold 7 is sealed by the left side orifice plate 21.

[0049] The inlet of the horizontal manifold 7 is fixed to the third support hole 24. Because the horizontal manifold 7 seals the left orifice plate 21 from the other cavities, the phase change medium filled from the left phase change medium cavity 2 can only enter the horizontal manifold 7 through the left orifice plate 21, and will not enter the energy-carrying medium inlet cavity 1 or the energy-carrying medium heat exchange cavity 4.

[0050] The surface oxide film of the power strip manifold is first removed by pickling or electrolysis. Then, tin wire containing a high proportion of silver, copper and tin is soldered to the surface of the titanium alloy pipe at a temperature range of 350~400℃.

[0051] In the energy storage tank structure, a left-side phase change medium cavity 2, an upper phase change medium cavity 3, an energy carrier medium heat exchange cavity 4, and an energy carrier medium inlet cavity 1 are formed into an isolated structure. This allows the phase change medium and the energy carrier medium to be integrated into a single energy storage tank structure for processing. The advantages of this method are that it not only solves the technical problems of traditional cold storage devices being too large and heavy due to their complex structures, but also makes the manufacturing process more economical and the processing technology simpler. In contrast, traditional cold storage devices require separate storage structures to store and transport the phase change medium and the energy carrier medium, which inevitably leads to excessively high manufacturing costs and overly complex equipment. They are significantly inferior to the integrated structure disclosed in this invention in terms of ease of handling and transportation, production costs, operational flexibility, and energy storage efficiency.

[0052] Secondly, the left phase change medium cavity 2, the upper phase change medium cavity 3, the energy carrier medium heat exchange cavity 4, and the energy carrier medium inlet cavity 1 are integrated into a box structure. After forming an isolation structure, because the path for the phase change medium cavity to fill the energy storage mechanism with the phase change medium is short, and the path for the energy carrier medium heat exchange cavity 4 and the energy carrier medium inlet cavity 1 to fill the box with the energy carrier medium is short, the phase change medium and the energy carrier medium can interact to undergo phase change energy storage in an extreme time. Therefore, it can store energy more efficiently and with higher energy storage efficiency.

[0053] Experiments have shown that the integrated energy storage box disclosed in this invention can achieve an energy storage weight ratio of 69.02 kJ / kg, which is 60% higher than the energy storage efficiency of traditional cold storage devices. It is fundamentally superior to traditional equipment, and therefore more green, energy-saving, environmentally friendly, and economical.

[0054] Meanwhile, this sealed structure integrates the phase change medium and the energy-carrying medium into a single-structure box, making it smaller in size and weight compared to traditional cold storage equipment, thus making it more economical and convenient.

[0055] Meanwhile, the left end plate 22 is connected to a second filling pipe 25 for filling the phase change medium into the horizontal plug manifold 7 (during operation, the phase change medium is filled through the second filling pipe 25), and a vent pipe 26 for discharging the phase change medium or air.

[0056] In actual operation, in order to increase the exchange between the horizontal plug-in manifold 7 and the energy-carrying cold and hot medium, the horizontal plug-in manifold 7 is arranged in an equilateral triangle pattern.

[0057] That is, the left end of the horizontal plug-in manifold 7 is fixedly connected to the left orifice plate 21 on the left side using a fixed plug-in method, while the right end of the horizontal plug-in manifold 7 is also fixed to the right orifice plate 11 in the energy medium inlet chamber 1 by a plug-in fixing method, thereby fixing both ends of the horizontal plug-in manifold 7 in sequence.

[0058] Example 4 like Figure 1-9 As shown, this embodiment is based on the structure of embodiment 3, and has the same working principle and similar installation structure as the horizontal plug-in manifold 7. The above-mentioned second plug-in manifold structure includes several vertically arranged vertical plug-in manifolds 6; the feed end of the vertical plug-in manifold 6 is connected to the upper phase change medium cavity 3.

[0059] Specifically, the vertical manifold 6 is arranged vertically, which is spatially staggered with the horizontal manifold 7. This staggered arrangement increases the density of the horizontal manifold 7 and the vertical manifold 6 within the limited space of the enclosure, thereby improving heat exchange efficiency.

[0060] Similar to the structure of the left-side phase change medium cavity 2 connected to the horizontal manifold 7, the aforementioned upper phase change medium cavity 3 includes a top end plate 31 forming the outer structure of the cavity and a second maintenance shell 33 serving as part of the energy storage tank shell; and a top perforated plate 32 forming the inner structure of the cavity. That is, the top perforated plate 32 located inside the cavity, together with the top end plate 31 located outside the cavity and the energy storage tank shell, form a relatively sealed upper phase change medium cavity 3 at the top of the energy storage tank. Its function is also to fill the vertical manifold 6 with phase change medium.

[0061] Therefore, a second support hole 34 for fixing the vertical plug-in manifold 6 is provided on the top perforated plate 32; the vertical plug-in manifold 6 is sealed by the top perforated plate 32 (that is, the feed port of the vertical plug-in manifold 6 is fixed on the second support hole 34); when the phase change medium is filled into the vertical plug-in manifold 6, the phase change medium passes through the top perforated plate 32 and enters the vertical plug-in manifold 6.

[0062] Similarly, the upper end of the vertical manifold 6 is fixed with the second support hole 34 to block the top perforated plate 32 and achieve an independent isolation state between the upper phase change medium cavity 3 and the energy-carrying medium inlet cavity 1 and the energy-carrying medium heat exchange cavity 4.

[0063] Specifically, the top of the aforementioned top end plate 31 is connected to a first filling pipe 35 for filling the vertical insertion manifold 6 with phase change medium. The working principle of filling the phase change medium is the same as that of the aforementioned left-side phase change medium cavity 2.

[0064] In actual operation, to facilitate internal maintenance of the cavity, a maintenance hole 36 is provided on the top end plate 31, as per existing methods. The maintenance hole 36 is sealed by a detachable maintenance end plate 37. That is, opening the maintenance end plate 37 exposes the cavity, allowing operators to perform maintenance such as cleaning. The maintenance end plate 37 is installed using conventional methods disclosed in the prior art, such as fixing it to the top end plate 31 with bolts.

[0065] Example 5 like Figure 1-9 As shown, based on the structure of Embodiment 4, the energy storage tank mainly involves heat exchange between two media during its operation. The first is a phase change medium stored in the horizontal and vertical manifolds 6, and the second is an energy-carrying medium (specifically, a cold energy-carrying medium and a hot energy-carrying medium) that soaks in the horizontal and vertical manifolds 6. Therefore, this embodiment specifically discloses the working principle and specific working structure of the energy-carrying medium entering the energy storage tank.

[0066] Specifically, the energy-carrying medium is pumped in through the energy-carrying medium inlet chamber 1. The energy-carrying medium inlet chamber 1 is directly opposite the left-side phase change medium chamber 2, located on the right side of the energy storage tank.

[0067] Therefore, similar to the structure of the left phase change medium cavity 2, the energy-carrying medium inlet cavity 1 includes a right end plate 12 forming the outer structure of the cavity and a first maintenance shell 13 as part of the energy storage box shell.

[0068] It also includes a right-side orifice plate 11 that forms the inner structure of the cavity; that is, the energy-carrying medium inlet cavity 1 is surrounded by the right-side end plate 12, the first maintenance shell 13, and the right-side orifice plate 11 to form a cavity. At the same time, the right end of the horizontal plug manifold 7 is fixedly supported on the right-side orifice plate 11.

[0069] Correspondingly, the right-side orifice plate 11 has a first support hole 15 for fixing the horizontal manifold 7. When the energy-carrying medium flows into the energy-carrying medium inlet chamber 1, the medium in the energy-carrying medium inlet chamber 1 also needs to flow into the energy-carrying medium heat exchange chamber 4.

[0070] Therefore, several diversion holes 14 are provided on the right-side orifice plate 11 for diverting the energy-carrying medium. The energy-carrying medium is diverted through the diversion holes 14 into the energy-carrying medium heat exchange chamber 4 via the right-side orifice plate 11 (the main heat exchange site is in the energy-carrying medium heat exchange chamber 4).

[0071] Meanwhile, according to the existing pressure control method, a pressure balance pipe 16 and a charging pipe 17 for charging the energy carrier medium are connected to the top of the energy carrier medium inlet 1. The pressure of the energy carrier medium in the energy storage tank is controlled by the pressure balance pipe 16. Similarly, the charging pipe 17 is used to charge the energy carrier medium.

[0072] During operation, both the cooling and heating energy-carrying media enter the energy storage tank through the energy-carrying media inlet 1, forming a fluid circulation structure. Therefore, the pumping method for the media is as follows: The right end plate 12 is connected to a cooling medium inlet pipe 19 for pumping cooling medium and a heating medium inlet pipe 18 for pumping heating medium.

[0073] Correspondingly, the front end plate 41 of the energy-carrying medium heat exchange cavity 4 is connected to the cooling medium outlet pipe 45 and the heating medium outlet pipe 44.

[0074] Cold and hot media are pumped into the independent cooling medium inlet pipe 19 and pumped out of the cooling medium outlet pipe 45, respectively. Hot media are pumped into the inlet pipe 18 and pumped out of the outlet pipe 44.

[0075] The above structure enables the circulation of cold and hot media in and out.

[0076] Example 6 like Figure 1-9 As shown, in this embodiment, based on the structure of embodiment 5, the heat exchange cavity 4 of the energy-carrying medium serves as the main location for heat exchange, and both the vertical manifold 6 and the horizontal manifold 7 pass through the heat exchange cavity 4 of the energy-carrying medium.

[0077] Therefore, the heat exchange cavity 4 for the energy-carrying medium includes a front end plate 41 and a rear end plate 42 forming the outer structure of the cavity; and a left end plate 21 and a right end plate 11 forming the inner structure of the cavity, as well as a bottom end plate 43 forming the inner structure of the cavity. That is, the heat exchange cavity 4 for the energy-carrying medium is formed by a dam formed by the left end plate 21, the right end plate 11, the front end plate 41, the rear end plate, and the bottom end plate 43. Similarly, a fourth support hole 53 for fixing the vertical insertion manifold 6 is provided on the bottom end plate 43.

[0078] The upper and lower ends of the vertical power strip manifold 6 are fixed by the bottom perforated plate 43 and the top perforated plate 32. Furthermore, similar to the arrangement of the horizontal power strip manifold 7, the aforementioned horizontal power strip manifold 7 uses a φ10x0.5mm titanium alloy U-shaped tube and is also arranged in an equilateral triangular staggered pattern.

[0079] During operation, the main bodies of the horizontal manifold 7 and the vertical manifold 6 are located in the energy-carrying medium heat exchange chamber 4 and are immersed in the energy-carrying medium (energy-carrying hot medium or energy-carrying cold medium) in the energy-carrying medium heat exchange chamber 4. The phase change medium filled in the horizontal manifold 7 and the vertical manifold 6 exchanges heat with the energy-carrying medium.

[0080] Meanwhile, in actual operation, the surfaces of the horizontal and vertical plug-in manifolds 7 and 6 are soldered and tinned using existing technology to increase the heat exchange area and improve heat exchange efficiency.

[0081] Example 7 like Figure 1-9 As shown, in this embodiment, based on the structure of embodiment 6, the bottom of the energy storage box is provided with a bottom venting cavity 5 that connects to the heat exchange chamber 4 of the energy-carrying medium; the lower end of the vertical manifold 6 is located inside the bottom venting cavity 5 (the vertical manifold 6 passes through the bottom perforated plate 43). In this way, the bottom venting cavity 5 serves as a venting structure, and at the same time, utilizing the venting structure increases the heat exchange efficiency of the vertical manifold 6. That is, the energy-carrying medium in the bottom venting cavity 5 can further exchange heat with the phase change medium inside the vertical manifold 6.

[0082] The bottom venting cavity 5 is formed as follows: The bottom venting cavity 5 includes a bottom end plate 51 forming the outer structure of the cavity and a shell portion 52 on the energy storage tank. It also includes a bottom perforated plate 43 forming the inner structure of the cavity, and the bottom perforated plate 43 has an energy-carrying medium flow hole 54 that communicates with the bottom venting cavity 5. That is, the energy-carrying medium enters the bottom venting cavity 5 through the energy-carrying medium flow hole 54.

[0083] Similarly, in order to achieve venting, a venting pipe 55 is connected to the bottom venting cavity 5, and the venting operation is carried out through the venting pipe 55.

[0084] Example 8 like Figure 1-9As shown, in this embodiment, based on the structure of embodiment 7, several flow-guiding baffles 56 are fixedly connected to the inner wall of the bottom venting cavity 5. During the venting process, the flow-guiding effect of the baffles 56 guides the energy-carrying medium fluid towards the vertical manifold 6 (towards the center of the bottom venting cavity 5). The purpose is that when the energy-carrying medium enters the energy-carrying medium heat exchange cavity 4, the flow-guiding effect of the baffles 56 prevents most of the energy-carrying medium from flowing along the wall, allowing it to flow around the vertical manifold 6 and the horizontal manifold 7, thereby improving the heat exchange rate.

[0085] Comparative Examples like Figure 1-9 As shown, in this embodiment, the energy storage device disclosed in this invention is compared with a conventional non-phase change cold storage device in terms of energy storage weight ratio. Specifically, taking an external dimension of 346mm × 1473mm × 1149mm (width × length × height) as an example, the energy storage weight ratio data of the integrated high-efficiency energy storage device of this invention and the conventional non-phase change cold storage device are compared: I. Main Experimental Parameters 1.1 The energy-carrying medium is a 50% concentration ethylene glycol aqueous solution (density 1090 kg / m3, specific heat capacity 3.1 kJ / (kg×℃)). 1.2 The temperature of the energy-carrying medium decreased from 26℃ to 10℃; 1.3 The energy storage tank is made of 4mm thick titanium alloy, with an internal volume of 343mm × 1470mm × 1146mm = 577L. The liquid storage capacity is 90% of the total volume, which is 0.52m³. 3 ; 1.4 The phase change medium is paraffin wax with a density of 850 kg / m³. 3 Its specific heat capacity is 250 kJ / kg; 1.5 The titanium alloy tube is 10*0.5mm (outer diameter 10, wall thickness 0.5mm). Given internal dimensions of 346mm×1473mm×1149mm, it uses a horizontal manifold arrangement of 75×41 and a vertical manifold arrangement of 65×58. The titanium alloy tube is approximately 1500m long, weighs 100.68kg, has an external volume of 0.117m³, and an internal volume of 0.0954m³. 3 The specific heat capacity of the titanium alloy tube is 0.5 kJ / (kg×℃).

[0086] II. Calculation of Energy Storage Weight Ratio for Non-Phase Change Cold Storage 2.1 Weight of a 50% ethylene glycol aqueous solution: 0.52 m³ × 10⁹ kg / m³ = 566.8 kg 2.2 The accumulator is made of titanium alloy with a wall thickness of 4mm and weighs 85kg; 2.3. Energy storage medium is a 50% concentration ethylene glycol aqueous solution: 566.8kg×3.1kJ / (kg×℃)×(26℃-10℃)=28113.28kJ.

[0087] 2.4 Energy storage weight ratio: 28113.28kJ ÷ (566.8kg + 85kg) = 43.13 kJ / kg III. Energy storage of the integrated high-efficiency energy storage device of the present invention 3.1. Weight of paraffin wax: 0.0954 m³ × 850 kg / m³ = 81.09 kg; Weight of 50% ethylene glycol aqueous solution: (0.52 m) 3 -0.117m3)×1090 kg / m 3 =439.27kg 3.2. Paraffin energy storage: 81.09 kg × 250 kJ / kg = 20272.5 kJ 3.3 Energy storage of 50% ethylene glycol aqueous solution: 439.27kg × 3.1kJ / (kg × ℃) × (26℃ - 10℃) = 21787.79kJ.

[0088] 3.4. Energy storage of the titanium alloy tube itself: 100.68kg×0.5kJ / (kg×℃)×(26℃-10℃)=805.44kJ.

[0089] 3.5. Energy storage of integrated high-efficiency energy storage device: 20272.5 kJ + 21787.79 kJ + 805.44 kJ = 42865.73 kJ; 3.6 Energy storage weight ratio: 42865.73 kJ / (81.09 kg + 439.27 kg + 100.68 kg) = 69.02 kJ / kg 3.7 The energy storage weight ratio of the integrated high-efficiency energy storage device of the present invention is 69.02 kJ / kg, and the energy storage weight ratio of the non-phase change cold accumulator is 43.13 kJ / kg. Therefore, the energy storage capacity of the energy storage device disclosed in the present invention is increased by 60%.

[0090] Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. An integrated energy storage device, characterized in that, Including energy storage tank and cold storage mechanism; The energy storage box includes a phase change medium cavity structure, an energy-carrying medium heat exchange cavity, and an energy-carrying medium inlet cavity integrated within the energy storage box. The phase change medium cavity structure is used to fill the cold storage mechanism with the phase change medium, and the energy-carrying medium inlet cavity is used to pass the cold and hot media into the energy-carrying medium heat exchange cavity; The cold storage device includes a first plug-in manifold structure and a second plug-in manifold structure integrated and installed in the energy storage box. The first plug-in manifold structure and the second plug-in manifold structure are connected to the phase change medium cavity structure. The main bodies of the first and second plug-in manifold structures are located in the heat exchange chamber of the energy-carrying medium; the phase change medium filled in the first and second plug-in manifold structures undergoes phase change energy storage after exchanging heat energy with the cold and hot media.

2. The integrated energy storage device according to claim 1, characterized in that, The phase change medium cavity structure includes an upper phase change medium cavity located at the top of the energy storage box and a left phase change medium cavity connected to the left side of the energy storage box. The upper phase change medium cavity is connected to the upper end of the left phase change medium cavity.

3. The integrated energy storage device according to claim 2, characterized in that, The first power strip manifold structure includes several horizontally arranged horizontal power strip manifolds; The feed end of the horizontal manifold is connected to the left phase change medium cavity; The second plug-in manifold structure includes several vertically arranged vertical plug-in manifolds; the feed end of the vertical plug-in manifolds is connected to the upper phase change medium cavity. The surface oxide film of the power strip manifold is first removed by pickling or electrolysis. Then, tin wire containing a high proportion of silver, copper and tin is soldered to the surface of the titanium alloy pipe at a temperature range of 350~400℃.

4. The integrated energy storage device according to claim 3, characterized in that, The energy-carrying medium inlet cavity is located on the right side of the energy storage box. The energy-carrying medium inlet cavity includes a right end plate forming the outer structure of the cavity and a first maintenance shell that serves as the outer shell of the energy storage box. It also includes the right-side perforated plate that forms the inner structure of the cavity; The right-side perforated plate has a first support hole for fixing the horizontal plug manifold and a diversion hole for diverting the energy-carrying medium. The top of the energy-carrying medium inlet cavity is connected to a pressure balance tube and an inlet tube for filling the energy-carrying medium.

5. The integrated energy storage device according to claim 4, characterized in that, The right end plate is connected to both a cooling medium inlet pipe for pumping cooling medium and a heating medium inlet pipe for pumping heating medium.

6. The integrated energy storage device according to claim 4, characterized in that, The upper phase change medium cavity includes a top end plate forming the outer structure of the cavity and a second maintenance shell that serves as part of the energy storage box shell. And a top perforated plate forming the inner structure of the cavity, wherein a second support hole for fixing the vertical plug manifold is provided on the top perforated plate; the top perforated plate of the vertical plug manifold is sealed; The top of the top end plate is connected to a first filling pipe for filling the vertical plug manifold with phase change medium.

7. The integrated energy storage device according to claim 6, characterized in that, The top end plate has a maintenance hole, which is sealed by a detachable maintenance end plate.

8. The integrated energy storage device according to claim 6, characterized in that, The left-side phase change medium cavity includes a left-side end plate forming the outer structure of the cavity and a third maintenance shell that serves as part of the energy storage box shell. It also includes the left-side perforated plate that forms the inner structure of the cavity; The left side perforated plate has a third support hole for fixing the horizontal plug manifold; the horizontal plug manifold is sealed by the left side perforated plate. The left orifice plate is connected to a second filling pipe for filling the horizontal plug manifold with phase change medium and a venting pipe for discharging air.

9. The integrated energy storage device according to claim 8, characterized in that, The energy-carrying medium heat exchange cavity is formed by a front end plate and a rear end plate that form the outer structure of the cavity. And the left and right orifice plates that form the inner structure of the cavity, and the bottom orifice plate that forms the inner structure of the cavity; The bottom perforated plate is provided with a fourth support hole for fixing the vertical plug manifold; The front end plate is connected to a cooling medium outlet pipe and a heating medium outlet pipe.

10. The integrated energy storage device according to claim 9, characterized in that, The bottom of the energy storage box is provided with a bottom vent cavity that connects to the heat exchange chamber of the energy-carrying medium; the lower end of the vertical insertion manifold is located in the bottom vent cavity. The bottom venting cavity includes a bottom end plate forming the outer structure of the cavity and a shell portion on the energy storage box. It also includes a bottom perforated plate that forms the inner structure of the cavity, and the bottom perforated plate has an energy-carrying medium flow hole that connects to the bottom venting cavity; Several flow-guiding energy-carrying medium baffles are fixedly connected to the inner wall of the bottom venting cavity. The bottom venting cavity is connected to a venting pipe.

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