Energy storage module based on alternating current and direct current control system

Abstract

The utility model discloses an energy storage module based on an alternating current and direct current control system, which comprises a lithium battery box used for installing a lithium battery pack, transverse cooling plates are arranged at the bottom and the top in the lithium battery box, and a plurality of longitudinal cooling plates are arranged in the lithium battery box. A plurality of accommodating cavities for storing lithium battery packs are formed between the plurality of longitudinal cooling plates and the transverse cooling plates; the water tank and the cooling assembly are both installed underground, the lithium battery box is installed on the ground surface, the water tank and the cooling assembly are installed underground, cooling liquid in the water tank and the cooling assembly can be cooled through the underground constant-temperature effect, and therefore it is guaranteed that the cooling liquid entering the longitudinal cooling plates and the transverse cooling plates takes away heat and provides heat; and moreover, a geographical environment is adopted to provide a constant-temperature environment for the lithium battery pack, and electric energy is also saved.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage modules, in particular to an energy storage module based on an AC / DC control system. Background Art

[0002] The AC / DC control system is a complex system involving AC and DC power supplies, which is used to control and convert electrical energy. This system usually includes various electronic devices and controllers to ensure the effective, safe and efficient conversion and transmission of electrical energy. In the process of photovoltaic panel power generation and storage, the AC / DC control system also plays a major role, mainly including AC and DC power storage modules and converters / inverters, controllers and sensors, etc. Among them, the DC power supply is usually a lithium battery pack or a DC generator.

[0003] After searching, the prior art has a publication number of CN116799373B, which discloses a photovoltaic energy storage lithium battery pack, which relates to the field of battery pack technology, including a positive charge dust removal device, a warm shell, a thermoelectric recovery conversion device, a heat dissipation and heat preservation dual circulation device, a self-temperature measurement lithium battery pack, and a storage capacitor. The heat dissipation and heat preservation dual circulation device realizes the heat dissipation function by injecting low-temperature coolant into the dual circulation channel when the temperature is high during the day.

[0004] However, the device and the prior art still have the following defects:

[0005] However, since the temperature of the lithium battery pack will rise during the process of charging and storing energy through photovoltaic panels, controllers and inverters, especially in hot weather, there are only two ways to dissipate heat for existing lithium battery packs. Method one is water cooling as mentioned in the above-mentioned comparative documents, and method two is to dissipate heat for the lithium battery through air cooling, or to dissipate heat through a combination of air cooling and water cooling.

[0006] When water cooling is used for heat dissipation, the coolant needs to be extracted from the lithium battery pack, cooled, and then reintroduced into the lithium battery pack to effectively reduce the temperature of the lithium battery during charging. However, in the process of cooling the heated coolant, air cooling is often used for cooling. Although air cooling can reduce the temperature, the temperature reduction is ineffective. At the same time, air cooling will also consume some electricity, which is not energy-efficient.

[0007] Therefore, it is necessary to provide an energy storage module based on an AC / DC control system to solve the above technical problems. Utility Model Content

[0008] The purpose of the utility model is to provide an energy storage module based on an AC / DC control system to solve the problems raised in the above background technology.

[0009] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0010] An energy storage module based on an AC / DC control system, comprising a lithium battery box for mounting a lithium battery pack, wherein the bottom and top of the lithium battery box are both mounted with transverse cooling plates, and the lithium battery box is mounted with a plurality of longitudinal cooling plates, wherein the plurality of longitudinal cooling plates and the transverse cooling plates respectively form a plurality of accommodating cavities for storing the lithium battery packs;

[0011] The second water inlet joints of the plurality of longitudinal cooling plates are all butt-jointed with the longitudinal water inlet pipe, the first water inlet joint of the transverse cooling plate is butt-jointed with the end of the transverse water inlet pipe, the longitudinal water inlet pipe and the transverse water inlet pipe are respectively butt-jointed with one end of the first water supply pipe, the other end of the first water supply pipe is butt-jointed with the water outlet end of the cooling component, the water inlet end of the cooling component is butt-jointed with the water outlet end of the water pump, the water inlet end of the water pump is butt-jointed with the interface on the bottom side wall of the water tank, the interface on the top side wall of the water tank is butt-jointed with the water inlet end of another cooling component, the water inlet end of another cooling component is butt-jointed with one end of the first water outlet pipe, the other end of the first water outlet pipe is respectively butt-jointed with one end of the longitudinal water outlet pipe and the transverse water outlet pipe, the side walls of the longitudinal water outlet pipe are respectively butt-jointed with the second water outlet joints of the plurality of longitudinal cooling plates, and the transverse water outlet pipes are respectively butt-jointed with the first water outlet joints of the transverse cooling plates;

[0012] The water tank and cooling assembly are installed underground, and the lithium battery box is installed on the surface.

[0013] Preferably, the transverse cooling plate also includes a first fixed plate and a first water trough. The first water trough is opened inside the transverse cooling plate. The first water trough is respectively connected to the first water inlet joint and the first water outlet joint. The first fixed plate is respectively welded to the side walls on both sides of the transverse cooling plate.

[0014] Preferably, the longitudinal cooling plate also includes a second fixed plate and a second water trough, the second fixed plates are respectively welded to the side walls on both sides of the longitudinal cooling plate, the second water trough is opened inside the longitudinal cooling plate, and is respectively connected to the second water inlet joint and the second water outlet joint.

[0015] Preferably, the cooling assembly includes multiple water-cooled cooling plates, a second water supply pipe, a first connecting pipe and a second connecting pipe, the third water outlet joints of the multiple water-cooled cooling plates are respectively docked and installed with the second water supply pipe, the second water supply pipes are respectively docked and installed with the interface on the side wall of the first connecting pipe, the first connecting pipes are respectively docked and installed with the first water supply pipe and the first water outlet pipe, the second connecting pipes are respectively docked and installed with the third water inlet joints of the multiple water-cooled cooling plates, the second connecting pipe is docked and installed with the water outlet end of the water pump through a water pipe, and the second connecting pipe located at the water inlet end of the water tank is directly docked and installed with the water inlet end of the water tank.

[0016] Preferably, the water-cooled cooling plate also includes a fin plate and a third water tank. A third water tank is opened inside the water-cooled cooling plate, and the third water tank is respectively connected to a third water inlet joint and a third water outlet joint. Fin plates are integrally formed on both side walls of the water-cooled cooling plate, and an anti-corrosion coating is coated on the surface of the water-cooled cooling plate.

[0017] Preferably, a connecting plate is welded inside the lithium battery box at the offset position between the first fixing plate and the second fixing plate, and the first fixing plate and the second fixing plate are fixedly installed inside the lithium battery box by threaded fasteners and the connecting plate.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] 1. By installing the water tank and cooling components underground, the coolant in the water tank and cooling components can be cooled by the constant temperature effect of the underground. At the same time, the temperature underground is often in a constant temperature state, that is, in a hot climate, the ground is in a low temperature state, and in a cold climate, the ground is in a state higher than the surface temperature. Therefore, multiple water-cooled cooling plates can be effectively cooled to ensure that the coolant entering the multiple longitudinal cooling plates and the transverse cooling plates takes away heat and provides heat, so as to ensure that the lithium battery pack is not affected by overheating and overcooling, and the geographical environment is used to provide a constant temperature environment for the lithium battery pack, which also saves electricity.

[0020] 2. At the same time, in order to further improve the constant temperature effect and ensure the normal temperature of the lithium battery pack, multiple groups of longitudinal cooling plates and multiple accommodating cavities for storing lithium battery packs are formed by longitudinal cooling plates, and multiple water-cooled cooling plates are installed at the water inlet and outlet of the water tank to improve the cooling and heating effects of the longitudinal cooling plates and longitudinal cooling plates, thereby ensuring uniform heating and cooling of the lithium battery pack.

[0021] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structures indicated in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall right axonometric structure of the utility model;

[0023] Figure 2 It is a schematic diagram of the overall left axonometric structure of the utility model;

[0024] Figure 3 This is a schematic diagram of the installation position of the cooling assembly and water tank of the utility model;

[0025] Figure 4 This is a schematic diagram of the internal structure of the lithium battery box of the utility model;

[0026] Figure 5 This is a schematic diagram of a top cross-sectional structure of a transverse cooling plate of the utility model;

[0027] Figure 6 It is a left sectional structural schematic diagram of the longitudinal cooling plate of the utility model;

[0028] Figure 7 It is a schematic diagram of the top cross-sectional structure of the water-cooling cooling plate of the utility model.

[0029] In the figure: 1. lithium battery box; 2. horizontal cooling plate; 21. first fixed plate; 22. first water tank; 23. first water inlet joint; 24. first water outlet joint; 3. longitudinal cooling plate; 31. second fixed plate; 32. second water tank; 33. second water inlet joint; 34. second water outlet joint; 4. horizontal water inlet pipe; 5. first water supply pipe; 6. first connecting pipe; 7. second water supply pipe; 8. water-cooled cooling plate; 81. fin plate; 82. third water tank; 83. third water inlet joint; 84. third water outlet joint; 9. second connecting pipe; 10. water pump; 11. water tank; 12. first water outlet pipe; 13. accommodating chamber; 14. longitudinal water inlet pipe; 15. longitudinal water outlet pipe; 16. horizontal water outlet pipe. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0031] See also Figures 1 to 7 , the utility model provides embodiments:

[0032] like Figures 1-2As shown, an energy storage module based on an AC / DC control system includes a lithium battery box 1 for installing a lithium battery pack, a transverse cooling plate 2 is installed at the bottom and top of the lithium battery box 1, and a plurality of longitudinal cooling plates 3 are installed inside the lithium battery box 1, and a plurality of accommodating cavities 13 for storing lithium battery packs are formed between the plurality of longitudinal cooling plates 3 and the transverse cooling plates 2 respectively;

[0033] The second water inlet joints 33 of the plurality of longitudinal cooling plates 3 are all docked and installed with the longitudinal water inlet pipe 14, the first water inlet joint 23 of the transverse cooling plate 2 is docked and installed with the end of the transverse water inlet pipe 4, the longitudinal water inlet pipe 14 and the transverse water inlet pipe 4 are respectively docked and installed with one end of the first water supply pipe 5, the other end of the first water supply pipe 5 is docked and installed with the water outlet end of the cooling component, the water inlet end of the cooling component is docked and installed with the water outlet end of the water pump 10, the water inlet end of the water pump 10 is docked and installed with the interface on the bottom side wall of the water tank 11, the interface on the top side wall of the water tank 11 is docked and installed with the water inlet end of another cooling component, the water inlet end of the other cooling component is docked and installed with one end of the first water outlet pipe 12, the other end of the first water outlet pipe 12 is respectively docked and installed with one end of the longitudinal water outlet pipe 15 and the transverse water outlet pipe 16, the side walls of the longitudinal water outlet pipe 15 are respectively docked and installed with the second water outlet joints 34 of the plurality of longitudinal cooling plates 3, and the transverse water outlet pipe 16 is respectively docked and installed with the first water outlet joints 24 of the transverse cooling plates 2;

[0034] Among them, Figure 5 As shown, the transverse cooling plate 2 also includes a first fixed plate 21 and a first water trough 22. The first water trough 22 is opened inside the transverse cooling plate 2. The first water trough 22 is respectively connected to the first water inlet joint 23 and the first water outlet joint 24. The first fixed plate 21 is respectively welded to the side walls of the transverse cooling plate 2.

[0035] The coolant is introduced into the first water tank 22 through the first water inlet joint 23 and then discharged from the first water tank 22 through the first water outlet joint 24 , thereby taking away the heat absorbed by the transverse cooling plate 2 .

[0036] Specifically, Figure 6 As shown, the longitudinal cooling plate 3 also includes a second fixing plate 31 and a second water trough 32. The second fixing plate 31 is respectively welded to the side walls on both sides of the longitudinal cooling plate 3. The second water trough 32 is opened inside the longitudinal cooling plate 3 and is respectively connected to the second water inlet joint 33 and the second water outlet joint 34.

[0037] The cooling liquid is supplied and discharged to the plurality of longitudinal cooling plates 3 through the longitudinal water inlet pipe 14 and the longitudinal water outlet pipe 15, so that the cooling liquid can enter the second water tank 32 through the second water inlet joint 33, and then be discharged from the second water tank 32 into the longitudinal water outlet pipe 15 through the second water outlet joint 34, thereby further improving the heat dissipation effect of the lithium battery box 1.

[0038] A connecting plate is welded inside the lithium battery box 1 at the offset position of the first fixing plate 21 and the second fixing plate 31. The first fixing plate 21 and the second fixing plate 31 are fixedly installed in the interior of the lithium battery box 1 by means of threaded fasteners and the connecting plate, so that multiple longitudinal cooling plates 3 and transverse cooling plates 2 can be fixedly installed in the lithium battery box 1.

[0039] The above-mentioned multiple longitudinal cooling plates 3 and transverse cooling plates 2 cooperate with the water tank 11, the cooling assembly and the water pump 10 to provide water cooling function for the lithium battery pack. However, how to cool the heated coolant requires further cooling treatment of the coolant.

[0040] like Figure 3 As shown, the water tank 11 and the cooling assembly are installed underground, and the lithium battery box 1 is installed on the surface. By installing the water tank 11 and the cooling assembly underground, the coolant in the water tank 11 and the cooling assembly can be cooled by the constant temperature effect of the underground. Specifically, when the temperature of the lithium battery pack inside the lithium battery box 1 rises, the internal temperature of the lithium battery box 1 can be detected by a temperature sensor in cooperation with a controller, and then the controller controls the water pump 10 to extract coolant from the water tank 11, and after passing through the cooling assembly, the coolant enters the horizontal cooling plate 2 and multiple longitudinal cooling plates 3 respectively, so as to cool the interior of the lithium battery box 1.

[0041] like Figure 1 As shown, the cooling assembly includes multiple water-cooled cooling plates 8, a second water supply pipe 7, a first connecting pipe 6 and a second connecting pipe 9, the third water outlet joints 84 of the multiple water-cooled cooling plates 8 are respectively docked and installed with the second water supply pipe 7, the second water supply pipe 7 is respectively docked and installed with the interface on the side wall of the first connecting pipe 6, the first connecting pipe 6 is respectively docked and installed with the first water supply pipe 5 and the first water outlet pipe 12, the second connecting pipe 9 is respectively docked and installed with the third water inlet joints 83 of the multiple water-cooled cooling plates 8, the second connecting pipe 9 is docked and installed with the water outlet end of the water pump 10 through a water pipe, and the second connecting pipe 9 located at the water inlet end of the water tank 11 is directly docked and installed with the water inlet end of the water tank 11.

[0042] By installing multiple water-cooled cooling plates 8 at the water inlet and outlet ends of the water tank 11, and because they are all pre-buried underground, the temperature underground is often in a constant temperature state, that is, in a hot climate, the ground is in a low temperature state, and in a cold climate, the ground is in a state higher than the surface temperature. Therefore, the multiple water-cooled cooling plates 8 can be effectively cooled to ensure that the coolant entering the multiple longitudinal cooling plates 3 and the transverse cooling plates 2 takes away heat and provides heat, thereby ensuring that the lithium battery pack is not affected by overheating and overcooling.

[0043] Further, such as Figure 7As shown, the water-cooled cooling plate 8 also includes a fin plate 81 and a third water tank 82. The third water tank 82 is opened inside the water-cooled cooling plate 8, and the third water tank 82 is respectively connected to the third water inlet joint 83 and the third water outlet joint 84. The side walls of the water-cooled cooling plate 8 are respectively integrally formed with fin plates 81, and the surface of the water-cooled cooling plate 8 is coated with an anti-corrosion coating. The anti-corrosion coating avoids the corrosion of the water-cooled cooling plate 8 caused by being underground for a long time. At the same time, the fin plates 81 on the side walls of the water-cooled cooling plate are used to increase the contact area with the soil, so as to better cool the coolant with a higher temperature, and at the same time, the coolant with a lower temperature can also be heated.

[0044] The control method of the present application document is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by technicians in this field, which is common knowledge in this field. In addition, the present application document is mainly used to protect mechanical devices, so the present application document no longer explains the control method and circuit connection in detail. The device is powered by a built-in power supply or an external power supply.

[0045] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An energy storage module based on an AC / DC control system, comprising a lithium battery box (1) for mounting a lithium battery pack, characterized in that: The bottom and top of the lithium battery box (1) are both provided with transverse cooling plates (2), and a plurality of longitudinal cooling plates (3) are provided inside the lithium battery box (1), and a plurality of accommodating cavities (13) for storing lithium battery packs are formed between the plurality of longitudinal cooling plates (3) and the transverse cooling plates (2); The second water inlet joints (33) of the plurality of longitudinal cooling plates (3) are all butt-jointed with the longitudinal water inlet pipe (14), the first water inlet joint (23) of the transverse cooling plate (2) is butt-jointed with the end of the transverse water inlet pipe (4), the longitudinal water inlet pipe (14) and the transverse water inlet pipe (4) are respectively butt-jointed with one end of the first water supply pipe (5), the other end of the first water supply pipe (5) is butt-jointed with the water outlet end of the cooling component, the water inlet end of the cooling component is butt-jointed with the water outlet end of the water pump (10), the water inlet end of the water pump (10) is butt-jointed with the connection on the bottom side wall of the water tank (11), The water tank (11) is butt-jointed with the water inlet end of another cooling component, the water inlet end of the other cooling component is butt-jointed with one end of a first water outlet pipe (12), the other end of the first water outlet pipe (12) is butt-jointed with one end of a longitudinal water outlet pipe (15) and a transverse water outlet pipe (16), the side walls of the longitudinal water outlet pipe (15) are butt-jointed with the second water outlet joints (34) of a plurality of longitudinal cooling plates (3), and the transverse water outlet pipe (16) is butt-jointed with the first water outlet joints (24) of the transverse cooling plates (2); The water tank (11) and cooling assembly are both installed underground, and the lithium battery box (1) is installed on the ground surface.

2. An energy storage module based on an AC / DC control system according to claim 1, characterized in that: The transverse cooling plate (2) further comprises a first fixing plate (21) and a first water trough (22); the first water trough (22) is provided inside the transverse cooling plate (2); the first water trough (22) is respectively connected to a first water inlet joint (23) and a first water outlet joint (24); the first fixing plate (21) is respectively welded to the side walls on both sides of the transverse cooling plate (2).

3. The energy storage module based on an AC / DC control system according to claim 1, characterized in that: The longitudinal cooling plate (3) also includes a second fixing plate (31) and a second water trough (32), wherein the second fixing plate (31) is respectively welded to the side walls on both sides of the longitudinal cooling plate (3), and the second water trough (32) is opened inside the longitudinal cooling plate (3) and is respectively connected to the second water inlet joint (33) and the second water outlet joint (34).

4. The energy storage module based on an AC / DC control system according to claim 1, characterized in that: The cooling assembly comprises a plurality of water-cooled cooling plates (8), a second water supply pipe (7), a first connecting pipe (6) and a second connecting pipe (9); the third water outlet joints (84) of the plurality of water-cooled cooling plates (8) are respectively docked and installed with the second water supply pipe (7); the second water supply pipe (7) is respectively docked and installed with the interface on the side wall of the first connecting pipe (6); the first connecting pipe (6) is respectively docked and installed with the first water supply pipe (5) and the first water outlet pipe (12); the second connecting pipe (9) is respectively docked and installed with the third water inlet joints (83) of the plurality of water-cooled cooling plates (8); the second connecting pipe (9) is docked and installed with the water outlet end of the water pump (10) through a water pipe; and the second connecting pipe (9) located at the water inlet end of the water tank (11) is directly docked and installed with the water inlet end of the water tank (11).

5. The energy storage module based on AC / DC control system according to claim 4, characterized in that: The water-cooled cooling plate (8) also includes a fin plate (81) and a third water tank (82). The third water tank (82) is provided inside the water-cooled cooling plate (8), and the third water tank (82) is respectively connected to a third water inlet joint (83) and a third water outlet joint (84). The side walls on both sides of the water-cooled cooling plate (8) are respectively integrally formed with the fin plates (81), and the surface of the water-cooled cooling plate (8) is coated with an anti-corrosion coating.

6. The energy storage module based on AC / DC control system according to claim 1, characterized in that: A connecting plate is welded inside the lithium battery box (1) at a position where the first fixing plate (21) and the second fixing plate (31) are offset from each other, and the first fixing plate (21) and the second fixing plate (31) are fixedly installed inside the lithium battery box (1) by means of threaded fasteners in cooperation with the connecting plate.

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