Energy storage device and energy storage system

Abstract

The utility model relates to the technical field of energy storage, specifically relates to a kind of energy storage equipment and energy storage system.The energy storage equipment includes: heat exchange component and phase change energy storage piece;The heat exchange component has heat exchange surface, the heat exchange surface is provided with multiple, and the heat exchange surface between opposite forms has interlayer space, and the phase change energy storage piece is at least arranged in the interlayer space, and the phase change energy storage piece is used to absorb heat.The heat exchange component has heat exchange surface, the heat exchange surface is provided with multiple, and the heat exchange surface between opposite setting has interlayer space, and the phase change energy storage piece is arranged in the interlayer space, and heat exchange surface can generate heat, so when phase change energy storage piece is clamped to be arranged in clamping space, two surfaces of phase change energy storage piece can be contacted with phase change energy storage piece, so that phase change energy storage piece can have greater contact area with heat exchange surface, to make the energy storage efficiency of phase change energy storage piece higher;Phase change energy storage piece can also be applied to the equipment of heating, to make relevant equipment realize heating.

Description

Technical Field

[0001] This utility model relates to the field of energy storage, specifically to an energy storage device and an energy storage system. Background Technology

[0002] A thermal storage device is a system that uses specific devices to store temporarily unused or excess heat through a certain heat storage material, and then releases it for use when needed. This type of system is used in heating systems, air conditioning systems, and other applications. However, currently, thermal storage devices can only accommodate a limited number of phase change energy storage components, resulting in low energy density and low thermal storage efficiency. Utility Model Content

[0003] Therefore, this utility model provides an energy storage device and an energy storage system. The energy storage device can improve the energy storage density of the energy storage device and the efficiency of the phase change energy storage component.

[0004] This utility model provides the following technical solution:

[0005] An energy storage device includes: a heat exchange component and a phase change energy storage component;

[0006] The heat exchange component has a heat exchange surface, and multiple heat exchange surfaces are provided. An interlayer space is formed between the opposing heat exchange surfaces. The phase change energy storage device is at least disposed in the interlayer space, and the phase change energy storage device is used to absorb heat.

[0007] Furthermore, the heat exchange component includes: a support assembly;

[0008] The support assembly includes: a first support member; the first support members are spaced apart along a first direction, and two adjacent first support members form a sandwich space, and the phase change energy storage device is detachably disposed in the sandwich space.

[0009] Furthermore, it also includes: a second support component;

[0010] The second support member is spaced apart along the second direction and is connected to the first support member. The first support member and the second support member form a storage cavity, which is used to store the phase change energy storage device.

[0011] Furthermore, the energy storage device also includes: a heat-conducting component;

[0012] The heat-conducting component is connected to the support component, and the heat-conducting component is used to conduct heat to the first support and the second support.

[0013] Further, it includes: at least one heat spreader;

[0014] Both the first support member and the second support member have surfaces, and the heat spreader is disposed on either the first support member and / or the second support member, or the heat spreader is disposed on two adjacent surfaces of the first support member and the second support member.

[0015] Furthermore, the heat-conducting component includes: a heat collector and a heat transfer component;

[0016] The heat collector is connected to the heat transfer element, and the heat transfer element is connected to the heat spreader plate; the heat transfer element is connected to the first support element and the second support element, and the heat transfer element is used to transfer the heat absorbed by the heat collector to the first support element and the second support element.

[0017] Furthermore, it also includes: the shell;

[0018] Both the support assembly and the heat-conducting assembly are disposed within the housing; a medium cavity is provided inside the side wall of the housing, and multiple guide plates are disposed within the medium cavity, with the guide plates being alternately arranged within the medium cavity; a heat insulation layer is provided on the outer periphery of the housing.

[0019] Furthermore, it also includes: a first heat exchange pipeline, a second heat exchange pipeline, a heat exchanger, and a heater;

[0020] The side wall of the shell is provided with a water inlet hole and the top of the shell is provided with a water outlet hole. The water inlet hole is connected to the first heat exchange pipeline and the water outlet hole is connected to the second heat exchange pipeline. Both the first heat exchange pipeline and the second heat exchange pipeline are connected to the heat exchanger.

[0021] The heater is installed on the second heat exchange pipeline and is used to heat the heat exchange medium in the second heat exchange pipeline.

[0022] Furthermore, the heat exchange medium is a liquid or a gas.

[0023] Furthermore, it includes: the energy storage device, and a heat source;

[0024] The heat source is located in the energy storage device and is used to provide energy to the energy storage device.

[0025] The heat exchange component has multiple heat exchange surfaces, and there is a sandwich space between two heat exchange surfaces facing each other. A phase change energy storage device is installed in the sandwich space. The heat exchange surfaces can generate heat. When the phase change energy storage device is sandwiched into the sandwich space, the two sides of the phase change energy storage device can come into contact with the heat exchange surfaces. This allows the phase change energy storage device to have a larger contact area with the heat exchange surfaces, thereby improving the energy storage efficiency of the phase change energy storage device. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0027] Figure 1 One of the structural schematic diagrams of the energy storage device provided in the embodiments of this utility model;

[0028] Figure 2 A second schematic diagram of the structure of the energy storage device provided in this embodiment of the utility model;

[0029] Figure 3 The third schematic diagram of the energy storage device provided in the embodiment of this utility model;

[0030] Figure 4 One of the partial structural schematic diagrams of the energy storage device provided in the embodiments of this utility model;

[0031] Figure 5 A second partial structural schematic diagram of the energy storage device provided in this embodiment of the utility model;

[0032] Figure 6 This is the third partial structural schematic diagram of the energy storage device provided in the embodiments of this utility model;

[0033] Figure 7 This is a schematic diagram of the energy storage system provided in an embodiment of the present invention.

[0034] Explanation of reference numerals in the attached figures:

[0035] 100 - Energy storage device; 10 - Heat exchange component; 11 - Heat exchange surface; 12 - Interlayer space; 20 - Phase change energy storage component; 30 - Support assembly; 31 - First support component; 32 - Second support component; 33 - Storage cavity; 40 - Heat conduction component; 41 - Heat collector; 42 - Heat transfer component; 50 - Heat spreader plate; 60 - Shell; 61 - Medium cavity; 62 - Guide plate; 63 - Insulation layer; 64 - Water inlet; 65 - Water outlet; 70 - First heat exchange pipeline; 71 - Second heat exchange pipeline; 72 - Heat exchanger; 73 - Heater; 200 - Energy storage system; 210 - Heat source. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0037] The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0038] In this document, references to "embodiment" or "implementation" mean that a particular feature, structure, or characteristic described in connection with an embodiment or implementation may be included in at least one embodiment of the present invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0039] A thermal storage device is a system that uses specific devices to store temporarily unused or excess heat through a certain heat storage material, and then releases it for use when needed. This type of system is used in heating systems, air conditioning systems, and other applications. However, currently, thermal storage devices can only accommodate a limited number of phase change energy storage components, resulting in low energy density and low thermal storage efficiency.

[0040] Therefore, this embodiment provides an energy storage device. The energy storage device can improve the energy storage density and efficiency of phase change energy storage components.

[0041] Please see Figure 1 This utility model provides an energy storage device 100, including: a heat exchange component 10 and a phase change energy storage component 20;

[0042] The heat exchange component 10 has a heat exchange surface 11, and multiple heat exchange surfaces 11 are provided. An interlayer space 12 is formed between the opposing heat exchange surfaces 11. The phase change energy storage component 20 is at least provided in the interlayer space 12, and the phase change energy storage component 20 is used to absorb heat.

[0043] Understandably, the heat exchange component 10 has heat exchange surfaces 11, and multiple heat exchange surfaces 11 are provided. There is a sandwich space 12 between two heat exchange surfaces 11 that are arranged in opposite directions. A phase change energy storage device 20 is provided in the sandwich space 12. The heat exchange surfaces 11 can generate heat. When the phase change energy storage device 20 is sandwiched into the sandwich space, the two surfaces of the phase change energy storage device 20 can come into contact with the heat exchange surfaces 11. This allows the phase change energy storage device 20 to have a larger contact area with the heat exchange surfaces 11, thereby making the energy storage efficiency of the phase change energy storage device 20 higher.

[0044] Please see Figure 2 In some embodiments, the heat exchange component 10 includes a support assembly 30;

[0045] The support assembly 30 includes: a first support member 31; the first support members 31 are spaced apart along a first direction, and two adjacent first support members 31 form a sandwich space 12, and the phase change energy storage device 20 is detachably disposed in the sandwich space 12.

[0046] Understandably, the heat exchange component 10 includes a support assembly 30, which includes a first support member 31, the first support member 31 being along a first direction (e.g., Figure 2 The first support members 31 are spaced apart in the left-right direction as shown, so that multiple interlayer spaces 12 can be formed between the multiple interlayer spaces 12, and multiple phase change energy storage devices 20 can be set in the multiple interlayer spaces 12, thus improving the energy storage density of the energy storage device 100. Both sides of the two opposing first support members 31 are heat exchange surfaces 11, so after the phase change energy storage device 20 is sandwiched in the interlayer space 12, both sides of the phase change energy storage device 20 can contact the first support member 31, so that the phase change energy storage device 20 can have a larger contact area with the heat exchange surface 11, thereby making the energy storage efficiency of the phase change energy storage device 20 higher.

[0047] Please see Figure 3 In some embodiments, it also includes: a second support member 32;

[0048] The second support member 32 is spaced apart along the second direction and is connected to the first support member 31. The first support member 31 and the second support member 32 form a storage cavity 33, which is used to store the phase change energy storage device 20.

[0049] Understandably, the second support member 32 is along the second direction (i.e., as shown in the image). Figure 3As shown in the vertical direction, the second support member 32 is sandwiched between two adjacent first support members 31, so that multiple storage cavities 33 can be formed between the support components 30. The phase change energy storage device 20 can be installed in the storage cavity 33. The phase change energy storage device 20 is installed in the storage cavity 33 in a detachable manner, which can effectively increase the number of phase change energy storage devices 20 in the energy storage device 100 and increase the energy storage density of the energy storage device 100.

[0050] Please see Figure 4 In some embodiments, the energy storage device 100 further includes a heat-conducting component 40;

[0051] The heat-conducting component 40 is connected to the support component 30, and the heat-conducting component 40 is used to conduct the heat to the first support 31 and the second support 32.

[0052] Understandably, the energy storage device 100 also includes a heat-conducting component 40, which is connected to the first support 31 and the second support 32. The heat-conducting component 40 can also be connected to the heat source 210. In this way, the heat-conducting component 40 can absorb the heat from the heat source 210 and transfer the heat from the heat source 210 to the first support 31 and the second support 32 through the heat-conducting component 40. This allows the heat generated by the heat source 210 to be evenly distributed on the first support 31 and the second support 32, thereby allowing the heat to be transferred to the storage cavity 33. This enables the phase change energy storage device 20 to better absorb heat, ensuring the efficiency of heat conduction, and thus achieving the goal of improving the energy storage efficiency of the energy storage device 100.

[0053] Please see Figure 4 In some implementations, it includes: at least one heat spreader 50;

[0054] Both the first support member 31 and the second support member 32 have surfaces, and the heat spreader 50 is disposed on either the first support member 31 and / or the second support member 32, or the heat spreader 50 is disposed on two adjacent surfaces of the first support member 31 and the second support member 32.

[0055] Understandably, both the first support member 31 and the second support member 32 have surfaces, which can be heat exchange surfaces 11. By setting a heat spreader 50 on the surfaces of the first support member 31 and the second support member 32, the heat spreader 50 is used to enable the phase change energy storage device 20 to directly absorb heat. Specifically, one surface of the heat spreader 50 is in contact with the first support member 31 or the second support member 32, and the other surface is in contact with the phase change energy storage device 20. In this way, the heat from the surfaces of the first support member 31 and the second support member 32 can be transferred to the entire surface of the heat spreader 50. The heat spreader 50 is set in the storage cavity 33, and the phase change energy storage device 20 is in direct contact with the heat spreader 50. This allows the phase change energy storage device 20 to absorb heat from the heat spreader 50 more evenly, thereby improving the efficiency of the phase change energy storage device 20 during energy storage.

[0056] Please see Figure 4 In some embodiments, the heat-conducting component 40 includes: a heat collector 41 and a heat transfer component 42;

[0057] The heat collector 41 is connected to the heat transfer element 42, and the heat transfer element 42 is connected to the heat spreader 50; the heat transfer element 42 is connected to the first support 31 and the second support 32, and the heat transfer element 42 is used to transfer the heat absorbed by the heat collector 41 to the first support 31 and the second support 32.

[0058] Understandably, the heat-conducting component 40 includes a heat collector 41 and a heat transfer component 42. The heat collector 41 is positioned close to the heat source 210, so that it can absorb the heat generated by the heat source 210. The heat collector 41 is connected to the heat transfer component 42, which can be a heat pipe or other heat-conducting component. After absorbing the heat generated by the heat source 210, the heat collector 41 can conduct the heat to the heat spreader 50 through the heat transfer component 42. In this way, the heat generated by the heat source 210 can be collected by the heat collector 41 and conducted to the heat spreader 50 through the heat transfer component 42. The heat spreader 50 can distribute the heat more evenly, so that the phase change energy storage device 20 can be heated more evenly, thereby improving the energy storage efficiency of the phase change energy storage device 20.

[0059] Please see Figure 5 In some embodiments, it further includes: a housing 60;

[0060] The support assembly 30 and the heat-conducting assembly 40 are both disposed within the housing 60; a medium cavity 61 is disposed inside the side wall of the housing 60, and a plurality of guide plates 62 are disposed inside the medium cavity 61, the guide plates 62 being alternately disposed within the medium cavity 61; a heat insulation layer 63 is disposed on the outer periphery of the housing 60.

[0061] Understandably, the energy storage device 100 also includes a housing 60, and the support assembly 30 and the heat conduction assembly 40 are all disposed inside the housing 60. A heat insulation layer 63 is disposed on the outside of the housing 60. The heat insulation layer 63 can insulate the temperature inside the housing 60. Under the high temperature state of the housing 60, the heat insulation layer 63 can prevent the heat inside the housing 60 from leaking out, avoid the temperature dissipation inside the housing 60, reduce the energy storage efficiency of the phase change energy storage device 20 inside the housing 60, and reduce the waste of heat energy.

[0062] Understandably, a medium cavity 61 is provided inside the side wall of the shell 60, and multiple guide plates 62 are alternately arranged in the medium cavity 61. The multiple guide plates 62 form a flow channel in the shell 60, which can extend the path length in the shell 60 so that the heat exchange medium can fully exchange heat with the shell 60.

[0063] Please see Figure 6 In some embodiments, it also includes: a first heat exchange pipeline 70, a second heat exchange pipeline 71, a heat exchanger 72, and a heater 73;

[0064] The side wall of the housing 60 is provided with a water inlet 64 and the top of the housing 60 is provided with a water outlet 65. The water inlet 64 is connected to the first heat exchange pipeline 70 and the water outlet 65 is connected to the second heat exchange pipeline 71. Both the first heat exchange pipeline 70 and the second heat exchange pipeline 71 are connected to the heat exchanger 72.

[0065] The heater 73 is disposed on the second heat exchange pipeline 71, and the heater 73 is used to heat the heat exchange medium in the second heat exchange pipeline 71.

[0066] It is understandable that the system also includes: a first heat exchange pipe 70, a second heat exchange pipe 71, and a heat exchanger 72. In order to allow water to flow from the heat exchanger 72 into the shell 60, an inlet hole 64 and an outlet hole 65 are provided on the side wall of the shell 60, and the heat exchanger 72 is provided with a water supply port and a water return port. One end of the first heat exchange pipe 70 is connected to the inlet hole 64, and the other end of the first heat exchange pipe 70 is connected to the water supply port. One end of the second heat exchange pipe 71 is connected to the outlet hole 65, and the other end of the first heat exchange pipe 71 is connected to the water return port. In this way, water can be supplied from the heat exchanger 72 to the shell 60.

[0067] Understandably, when hot water enters the shell 60, it flows through the flow channels formed by the guide plate 62. In this way, the hot water in the heat exchanger 72 can heat the shell 60, providing it with a certain amount of heat and also offering some insulation. When the heat source 210 is initially operating, the temperature of the shell 60 is relatively low. The heat from the heat exchanger 72, the first heat exchange pipe 70, and the second heat exchange pipe 71 can transfer heat from the heat exchanger 72 to the shell 60, thereby improving the heating efficiency of the energy storage device 100.

[0068] In some embodiments, the heat exchange medium is a liquid or a gas.

[0069] It is understandable that when the heat exchange medium is gas, the heating efficiency is slower, but the corrosion of the shell 60 is relatively small. When the heat exchange medium is liquid, the heating efficiency is faster, but it may cause damage to the shell 60.

[0070] Please see Figure 7 This application also provides an energy storage system 200, including: an energy storage device 100 and a heat source 210;

[0071] The heat source 210 is disposed in the energy storage device 100, and the heat source 210 is used to provide energy to the energy storage device 100.

[0072] The energy storage device 100 also includes a heat source 210, which provides heat energy to the phase change energy storage component 20. The heat source 210 can be located inside or outside the housing 60. When the heat source 210 is located inside the housing 60, the heat-conducting component 40 is also located inside the housing 60. When the heat source 210 is located outside the housing 60, the heat collector 41 needs to be located close to the heat source 210. Preferably, the heat source 210 in this invention is located inside the housing 60, so that the heat generated by the heat source 210 can be directly scattered within the housing 60, thereby reducing heat loss and improving the thermal energy utilization rate.

[0073] Understandably, the main purpose of this utility model is to store electricity using off-peak electricity and release energy using phase change energy storage device 20 during peak electricity, which can reduce the cost of use and reduce the waste of electricity.

[0074] In some embodiments, the phase change energy storage device 20 can be sodium acetate trihydrate or paraffin wax, which is prepared by microencapsulation technology, that is, encapsulating the phase change material in tiny capsules.

[0075] When the phase change energy storage device 20 absorbs heat, the ambient temperature rises to the phase change temperature of the phase change material, at which point the phase change material inside the capsule begins to absorb heat. The heat absorbed by the phase change material causes it to change from a solid to a liquid state; this process is called melting. During this process, the temperature of the phase change material inside the capsule remains relatively constant because the absorbed heat is used to overcome intermolecular forces rather than to raise the temperature.

[0076] When the phase change energy storage device 20 releases heat, the liquid phase change material inside the capsule begins to release heat when the ambient temperature drops below the phase change temperature of the phase change material. The phase change material releases heat and changes from a liquid to a solid state; this process is called solidification. Similarly, the temperature remains relatively constant during this process.

[0077] In this utility model, the terms "embodiment" and "implementation" mean that a specific feature, structure, or characteristic described in connection with an embodiment can be included in at least one embodiment of this utility model. The appearance of these phrases in various places in the specification does not necessarily refer to the same embodiment, nor are they independent or alternative embodiments mutually exclusive with other embodiments. Those skilled in the art will understand, explicitly and implicitly, that the embodiments described in this utility model can be combined with other embodiments. Furthermore, it should be understood that the features, structures, or characteristics described in the various embodiments of this utility model can be arbitrarily combined to form another embodiment that does not depart from the spirit and scope of the technical solution of this utility model, provided there is no contradiction between them.

[0078] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to the above preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions to the technical solution of this utility model should not depart from the spirit and scope of the technical solution of this utility model.

Claims

1. An energy storage device, characterized in that, include: Heat exchange components and phase change energy storage devices; The heat exchange component has a heat exchange surface, and multiple heat exchange surfaces are provided. An interlayer space is formed between the opposing heat exchange surfaces. The phase change energy storage device is at least disposed in the interlayer space, and the phase change energy storage device is used to absorb heat.

2. The energy storage device according to claim 1, characterized in that, The heat exchange component includes: a support assembly; The support assembly includes: a first support member; the first support members are spaced apart along a first direction, and two adjacent first support members form a sandwich space, and the phase change energy storage device is detachably disposed in the sandwich space.

3. The energy storage device according to claim 2, characterized in that, Also includes: Second support component; The second support member is spaced apart along the second direction and is connected to the first support member. The first support member and the second support member form a storage cavity, which is used to store the phase change energy storage device.

4. The energy storage device according to claim 3, characterized in that, The energy storage device also includes: a heat-conducting component; The heat-conducting component is connected to the support component, and the heat-conducting component is used to conduct heat to the first support and the second support.

5. The energy storage device according to claim 4, characterized in that, include: At least one heat spreader; Both the first support member and the second support member have surfaces, and the heat spreader is disposed on either the first support member and / or the second support member, or the heat spreader is disposed on two adjacent surfaces of the first support member and the second support member.

6. The energy storage device according to claim 5, characterized in that, The heat-conducting component includes: a heat collector and a heat transfer component; The heat collector is connected to the heat transfer element, and the heat transfer element is connected to the heat spreader plate; the heat transfer element is connected to the first support element and the second support element, and the heat transfer element is used to transfer the heat absorbed by the heat collector to the first support element and the second support element.

7. The energy storage device according to claim 6, characterized in that, Also includes: case; Both the support assembly and the heat-conducting assembly are disposed within the housing; a medium cavity is provided inside the side wall of the housing, and multiple guide plates are disposed within the medium cavity, with the guide plates being alternately arranged within the medium cavity; a heat insulation layer is provided on the outer periphery of the housing.

8. The energy storage device according to claim 7, characterized in that, Also includes: First heat exchange pipeline, second heat exchange pipeline, heat exchanger, heater; The side wall of the shell is provided with a water inlet hole and the top of the shell is provided with a water outlet hole. The water inlet hole is connected to the first heat exchange pipeline and the water outlet hole is connected to the second heat exchange pipeline. Both the first heat exchange pipeline and the second heat exchange pipeline are connected to the heat exchanger. The heater is installed on the second heat exchange pipeline and is used to heat the heat exchange medium in the second heat exchange pipeline.

9. The energy storage device according to claim 8, characterized in that, The heat exchange medium is a liquid or a gas.

10. An energy storage system, characterized in that, include: The energy storage device as described in any one of claims 1 to 9, and Heat source; The heat source is located in the energy storage device and is used to provide energy to the energy storage device.

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