Direct cooling unit and energy storage cabinet

Abstract

The direct cooling unit comprises a box body, a heat exchanger module, an electric heating evaporator, a draught fan and an electric control box, the box body comprises a first installation cabin, the heat exchanger module is arranged in the first installation cabin and comprises a first heat exchanger, the electric heating evaporator is arranged in the first installation cabin and connected with the first heat exchanger, and the draught fan is arranged in the first heat exchanger. The draught fan is arranged outside the first mounting cabin and used for conducting heat exchange on the first heat exchanger, and the electric control box is arranged in the first mounting cabin. According to the direct cooling unit, the internal space is reasonably arranged, all parts are installed without mutual interference, the electric heating evaporator is arranged, and an electric heater is used as a system heat source during low-temperature heating, so that the system is not influenced by the low temperature of the external environment, heat energy is continuously provided for the battery pack, and heating can be carried out in an extremely low-temperature environment; and on the other hand, heat entering the compressor can be accurately controlled, and the system operates stably.

Description

Technical Field

[0001] This utility model relates to the field of energy storage thermal management technology, and in particular to a direct cooling unit and energy storage cabinet. Background Technology

[0002] In existing technologies, containerized energy storage systems are increasingly used in new energy, photovoltaic, and power station applications. They require less space and are easier to install and transport, making them popular in the new energy and photovoltaic industries. Meanwhile, the cooling systems of dedicated containerized energy storage systems are increasingly moving towards high-performance and high-stability technologies. Poor temperature control of energy storage battery packs can lead to unstable battery temperatures, increasing the risk of short circuits and damage to surrounding components.

[0003] Currently, many manufacturers are researching the feasibility of direct battery cooling, where refrigerant directly enters the battery cold plate to cool the battery, and the direct cooling unit controls the heat exchange of the battery pack. However, current direct cooling units lack a coolant circuit, making the original liquid-thermal PTC solution impossible. Direct cooling systems must have a heat pump function, i.e., heating the battery at low temperatures. However, its low-temperature heating function has inherent limitations; the lowest operating ambient temperature is only around -15℃, and the internal structure of direct cooling units is complex, cumbersome to arrange, and has poor space utilization.

[0004] Therefore, it is necessary to provide a solution to overcome the defects mentioned above. Utility Model Content

[0005] The purpose of this utility model is to provide a direct cooling unit and an energy storage cabinet.

[0006] According to one aspect of the present invention, a direct-cooling unit is provided, comprising:

[0007] The enclosure includes a first mounting compartment;

[0008] A heat exchanger module is disposed in the first installation compartment, and the heat exchanger module includes a first heat exchanger.

[0009] An electrically heated evaporator is disposed in a first installation chamber and is connected to the first heat exchanger;

[0010] A fan, located outside the first installation compartment, is used for heat exchange of the first heat exchanger;

[0011] An electrical control box is located inside the first installation compartment.

[0012] Preferably, the housing further includes a second installation compartment adjacent to the first installation compartment, with a partition between the second installation compartment and the first installation compartment, and the fan is installed in the second installation compartment.

[0013] Preferably, the housing includes a bottom plate, a first side plate and a second side plate disposed on both sides of the bottom plate, a front baffle disposed opposite to the partition, and a cover plate disposed on the top, wherein a filter screen is provided in the middle of the front baffle.

[0014] Preferably, the electric heating evaporator is mounted on the first side plate, and the electrical control box is mounted on the second side plate.

[0015] Preferably, the electric heating evaporator is mounted on the second side plate, and the electrical control box is mounted on the first side plate.

[0016] Preferably, the heat exchanger module further includes a second heat exchanger, wherein the first heat exchanger is arranged parallel to the partition plate, and the second heat exchanger is arranged parallel to the first heat exchanger and located between the first heat exchanger and the partition plate.

[0017] Preferably, the partition is provided with a ventilation opening connecting the first installation compartment and the second installation compartment, and the fan is provided corresponding to the ventilation opening.

[0018] Preferably, a frequency converter is provided on the opposite surface of the electrical control box and the electric heating evaporator.

[0019] Preferably, the first installation compartment is further provided with a compressor, a regenerator, a liquid receiver, and a gas-liquid separator that are connected to the first heat exchanger and the second heat exchanger via pipelines.

[0020] Preferably, the electrically heated evaporator is arranged parallel to the first side plate.

[0021] According to another aspect of the present invention, an energy storage cabinet is provided, comprising the above-mentioned direct cooling unit, cabinet and battery pack, wherein the direct cooling unit and the battery pack are both installed inside the cabinet, and the direct cooling unit is connected to the battery pack through pipelines.

[0022] Preferably, the cabinet body is divided into multiple placement compartments, the number of battery packs is at least one, the direct cooling unit is installed in the topmost placement compartment, the battery packs are placed in the placement compartment below the direct cooling unit, and the multiple battery packs are connected in parallel with the direct cooling unit through a distributor.

[0023] Compared with the prior art, the direct-cooling unit and energy storage cabinet provided by this utility model have the following beneficial effects:

[0024] Due to the adoption of the above technical solutions, this utility model has the advantages of simple structure, ingenious design and low cost. The internal space of the direct cooling unit is reasonably arranged, and the installation of each component does not interfere with each other. It is equipped with an electric heating evaporator, and uses an electric heater as the system heat source when heating at low temperatures, so that the system is not affected by the low temperature of the external environment and continuously provides heat energy to the battery pack, and can heat in extremely low temperature environments. On the other hand, it can precisely control the heat entering the compressor, so that the system can operate stably. Attached Figure Description

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0026] Figure 1 This is a perspective view of the refrigeration unit of this utility model;

[0027] Figure 2 The internal part of the direct-cooling unit of this utility model without the cover plate is three-dimensional. Figure 1 ;

[0028] Figure 3 The internal part of the direct-cooling unit of this utility model without the cover plate is three-dimensional. Figure 2 ;

[0029] Figure 4 The internal part of the direct-cooling unit of this utility model without the cover plate is three-dimensional. Figure 3 ;

[0030] Figure 5 This is a top view of the direct-cooling unit of this utility model without the cover plate;

[0031] Figure 6 This is a perspective view of the energy storage cabinet of this utility model.

[0032] Among them, 10 is the direct cooling unit; 101 is the housing; 1011 is the bottom plate; 1012 is the first side plate; 1013 is the second side plate; 1014 is the front baffle; 10141 is the filter screen; 1015 is the cover plate; 1016 is the partition plate; 1017 is the vent; 1018 is the first installation compartment; 1019 is the second installation compartment; 102 is the heat exchanger module; 1021 is the first heat exchanger; 1022 is the second heat exchanger; 103 is the electric heating evaporator; 104 is the fan; 105 is the electrical control box; 1051 is the frequency converter; 106 is the compressor; 107 is the regenerator; 108 is the liquid receiver; 109 is the gas-liquid separator; 20 is the energy storage cabinet; 201 is the cabinet; 202 is the placement compartment; 203 is the distributor; and 30 is the battery pack. Detailed Implementation

[0033] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] To keep the drawings concise, only the parts relevant to this invention are shown schematically in each figure, and they do not represent the actual structure of the product. Furthermore, for ease of understanding, in some figures, only one of the components with the same structure or function is schematically depicted, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one."

[0035] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0036] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0038] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0039] See Figure 1 and Figure 2 This embodiment discloses a direct-cooling unit 10, including a housing 101, a heat exchanger module 102, an electric heating evaporator 103, a fan 104, and an electrical control box 105. The heat exchanger module 102, the electric heating evaporator 103, the fan 104, and the electrical control box 105 are all located inside the housing 101. The housing 101 includes a base plate 1011, a first side plate 1012 and a second side plate 1013 located on the left and right sides of the base plate 1011, a front baffle 1014 located on the front side of the base plate 1011, and a cover plate 1015 covering the top. A filter screen 10141 is provided in the middle of the front baffle 1014 for air circulation.

[0040] See Figure 3A partition 1016 is provided in the inner cavity formed by the base plate 1011, the first side plate 1012, the second side plate 1013, the front baffle 1014, and the cover plate 1015. The partition 1016 is arranged parallel to the front baffle 1014. The partition 1016 divides the inner cavity into a first mounting compartment 1018 near the front baffle 1014 and a second mounting compartment 1019 away from the front baffle 1014. The heat exchanger module 102, the electric heating evaporator 103, and the electrical control box 105 are all located in the first mounting compartment 1018. The electric heating evaporator 103 is mounted on the first side plate 1012, and the electrical control box 105 is mounted on the second side plate 1013, or the electric heating evaporator 103 is mounted on the second side plate 1013, and the electrical control box 105 is mounted on the first side plate 1012. In this embodiment, the electric heating evaporator 103 is installed on the first side plate 1012, and the electrical control box 105 is installed on the second side plate 1013. The electric heating evaporator 103 is arranged parallel to the first side plate 1012, which saves internal space.

[0041] The heat exchanger module 102 includes a first heat exchanger 1021 and a second heat exchanger 1022. The first heat exchanger 1021 is used to introduce refrigerant in heating mode, and the second heat exchanger 1022 is used to introduce refrigerant in cooling mode. The first heat exchanger 1021, the second heat exchanger 1022, and the partition 1016 are arranged parallel to each other, with the second heat exchanger 1022 located between the first heat exchanger 1021 and the partition 1016. A frequency converter 1051 is provided on the opposite surface of the electrical control box 105 and the electric heating evaporator 103.

[0042] See Figure 5 The first installation compartment 1018 also houses a compressor 106, a regenerator 107, a liquid receiver 108, and a gas-liquid separator 109, all connected to the first heat exchanger 1021 and the second heat exchanger 1022 via pipelines. The compressor 106, regenerator 107, liquid receiver 108, and gas-liquid separator 109 are all located between the electrical control box 105 and the electric heating evaporator 103. The compressor 106 outlet, gas-liquid separator 109, first heat exchanger 1021, external battery pack 30, liquid receiver 108, regenerator 107, electric heating evaporator 103, and compressor 106 inlet are sequentially connected via pipelines, forming a heating circuit in heating mode.

[0043] See Figure 4The partition 1016 has two laterally adjacent ventilation openings 1017 connecting the first installation compartment 1018 and the second installation compartment 1019. There are also two fans 104, both located within the second installation compartment 1019 and corresponding to the ventilation openings 1017. Each ventilation opening 1017 corresponds to one fan 104. When the fans 104 are operating, they direct air from the vicinity of the first heat exchanger 1021 or the second heat exchanger 1022 through the ventilation openings 1017 to the second installation compartment 1019, or they direct air from within the second installation compartment 1019 through the ventilation openings 1017 to the first heat exchanger 1021 or the second heat exchanger 1022.

[0044] See Figure 6 This embodiment also discloses an energy storage cabinet 20, including the aforementioned direct-cooling unit 10, cabinet 201, and battery pack 30. Both the direct-cooling unit 10 and the battery pack 30 are installed inside the cabinet 201, with the direct-cooling unit 10 connected to the battery pack 30 via pipes. The cabinet 201 is divided into multiple storage compartments 202. There is at least one battery pack 30. The direct-cooling unit 10 is installed in the topmost storage compartment 202, and the battery pack 30 is placed in the storage compartment 202 below the direct-cooling unit 10. Multiple battery packs 30 are connected in parallel with the direct-cooling unit 10 via a distributor 203.

[0045] It will be apparent to those skilled in the art that various modifications and variations can be made to the exemplary embodiments of the present invention without departing from the spirit and scope of the present invention. Therefore, it is intended that the present invention cover modifications and variations falling within the scope of the appended claims and their equivalents.

Claims

1. A direct-cooling unit, characterized in that, include: The enclosure includes a first mounting compartment; A heat exchanger module is disposed in the first installation compartment, and the heat exchanger module includes a first heat exchanger. An electrically heated evaporator is disposed in a first installation chamber and is connected to the first heat exchanger; A fan, located outside the first installation compartment, is used for heat exchange of the first heat exchanger; An electrical control box is located inside the first installation compartment.

2. The direct-cooling unit as described in claim 1, characterized in that, The enclosure also includes a second installation compartment adjacent to the first installation compartment, with a partition between the second installation compartment and the first installation compartment, and the fan is installed in the second installation compartment.

3. The direct-cooling unit as described in claim 2, characterized in that, The housing includes a bottom plate, a first side plate and a second side plate on both sides of the bottom plate, a front baffle plate opposite to the partition plate, and a cover plate on the top. A filter screen is provided in the middle of the front baffle plate.

4. The direct-cooling unit as described in claim 3, characterized in that, The electric heating evaporator is installed on the first side plate, and the electrical control box is installed on the second side plate.

5. The direct-cooling unit as described in claim 3, characterized in that, The electric heating evaporator is installed on the second side plate, and the electrical control box is installed on the first side plate.

6. The direct-cooling unit as described in claim 4, characterized in that, The heat exchanger module further includes a second heat exchanger. The first heat exchanger is arranged parallel to the partition plate, and the second heat exchanger is arranged parallel to the first heat exchanger and located between the first heat exchanger and the partition plate.

7. The direct-cooling unit as described in claim 5, characterized in that, The partition is provided with a ventilation opening that connects the first installation compartment and the second installation compartment, and the fan is provided corresponding to the ventilation opening.

8. The direct-cooling unit as described in claim 7, characterized in that, A frequency converter is provided on the opposite side of the electrical control box and the electric heating evaporator.

9. The direct-cooling unit as described in claim 6, characterized in that, The first installation compartment is also equipped with a compressor, a regenerator, a liquid receiver, and a gas-liquid separator that are connected to the first heat exchanger and the second heat exchanger via pipelines.

10. The direct-cooling unit as described in claim 3, characterized in that, The electric heating evaporator is arranged parallel to the first side plate.

11. An energy storage cabinet, characterized in that, The device includes the direct cooling unit, cabinet, and battery pack as described in any one of claims 1 to 10, wherein the direct cooling unit and the battery pack are both installed inside the cabinet, and the direct cooling unit is connected to the battery pack via pipelines.

12. The energy storage cabinet as described in claim 11, characterized in that, The cabinet is divided into multiple storage compartments. There is at least one battery pack. The direct cooling unit is installed in the topmost storage compartment, and the battery pack is placed in the storage compartment below the direct cooling unit. Multiple battery packs are connected in parallel with the direct cooling unit through a distributor.

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