Cabinet type energy storage system

Abstract

The utility model discloses a cabinet type energy storage system, which comprises a cabinet, a plurality of battery boxes, a liquid cooling system and a circuit device, and is characterized in that the cabinet is provided with a battery cavity, an electric control cavity and a mounting cavity positioned between the battery cavity and the electric control cavity, and the battery cavity is provided with a plurality of battery positions in the vertical direction; each battery box is correspondingly and transversely arranged at one battery position and is provided with a liquid cooling flow channel; the liquid cooling system comprises a liquid feeding pipe, a liquid return pipe and a liquid cooling module, and the liquid cooling module is transversely arranged in the mounting cavity and is connected with the liquid cooling flow channel of the battery box through the liquid feeding pipe and the liquid return pipe; and the circuit device is arranged in the electric control cavity and is connected with the battery box and the liquid cooling module. According to the technical scheme, the heat dissipation effect of the battery box can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage, and particularly relates to a cabinet-type energy storage system. Background Art

[0002] With the continuous development of energy storage technology, energy storage systems are more and more widely used. At present, cabinet-type energy storage systems are widely used. Generally, a heat dissipation system is arranged in the cabinet to dissipate heat from the battery box. At present, the two relatively common heat dissipation methods are water cooling and air cooling. Generally, the effect of water cooling is better than that of air cooling. However, in some cabinets, the distance between the liquid cooling module and the battery box is relatively far, the pipeline is relatively long, and there is a large loss in the process of coolant flow, which affects the heat dissipation effect. Summary of the Utility Model

[0003] The main purpose of the utility model is to propose a cabinet-type energy storage system, aiming to improve the heat dissipation effect on the battery box.

[0004] To achieve the above purpose, the cabinet-type energy storage system proposed by the utility model includes:

[0005] A cabinet having a battery cavity, an electric control cavity, and an installation cavity located between the battery cavity and the electric control cavity. The battery cavity is provided with a plurality of battery positions in the up-and-down direction;

[0006] A plurality of battery boxes, each of which is horizontally placed corresponding to one of the battery positions and is provided with a liquid cooling flow channel;

[0007] A liquid cooling system including a liquid supply pipe, a liquid return pipe, and a liquid cooling module. The liquid cooling module is horizontally placed in the installation cavity and is connected to the liquid cooling flow channel of the battery box through the liquid supply pipe and the liquid return pipe; and

[0008] A circuit device is arranged in the electric control cavity, and the circuit device is connected to the battery box and the liquid cooling module.

[0009] Optionally, the cabinet includes a cabinet body, a first cabinet door, and a second cabinet door. The cabinet body is provided with a first opening corresponding to the battery cavity, and a third opening and a fourth opening corresponding to the installation cavity and the electric control cavity. The third opening and the fourth opening are opposite to each other. The first cabinet door covers the first opening and the third opening, and the second cabinet door covers the fourth opening.

[0010] Optionally, the first cabinet door is provided with a first ventilation opening corresponding to the third opening, and the second cabinet door is provided with a second ventilation opening corresponding to the fourth opening.

[0011] Optionally, two vertical air guide plates are provided in the installation cavity, and the two vertical air guide plates are spaced apart to form an air guide channel, one end of the air guide channel is connected to an end of the liquid cooling module away from the third opening, and is connected to the heat dissipation outlet of the liquid cooling module, and the other end of the air guide channel extends to the fourth opening.

[0012] Optionally, two heat insulation plates are vertically arranged in the electric control cavity, and the two heat insulation plates are arranged at intervals in the width direction of the cabinet to divide the electric control cavity into three vertical chambers. The circuit device includes a high-voltage box, an energy storage inverter and a control module, and the high-voltage box, the energy storage inverter and the control module are respectively arranged in one of the vertical chambers.

[0013] Optionally, one of the high-voltage box and the energy storage inverter is arranged in a vertical chamber between the two insulation boards, and the cabinet also includes an air duct, one end of which is connected to the vertical chamber between the two insulation boards, and the other end extends to the fourth opening.

[0014] Optionally, the cabinet comprises a cabinet body, a first cabinet door and a back plate, the cabinet body has the battery cavity, the electric control cavity, the installation cavity, a first opening and a second opening, the first opening and the second opening are respectively arranged on opposite sides of the cabinet body and are both connected to the battery cavity, a plurality of connecting parts are arranged on the periphery of the second opening, a battery mounting rack is arranged in the battery cavity, and the battery mounting rack is formed with a plurality of the battery positions;

[0015] The first cabinet door is rotatably mounted at the first opening and has a closed state covering the first opening and an open state opening the first opening;

[0016] The back plate is formed separately from the cabinet body and covers the second opening. A sealing structure is provided between the periphery of the back plate and the second opening. A connecting structure is provided at a position on the inner side of the back plate corresponding to the connecting portion.

[0017] The connecting portion and the battery mounting frame are staggered in a direction from the first opening to the second opening, so that the connecting structure can be connected and fixed to the connecting portion from the first opening.

[0018] Optionally, the connection portion is provided with a first through hole, the connection structure has a stud, and the cabinet further includes a locking nut, the stud passes through the first through hole, the locking nut is screwed on the stud and is located on a side of the connection portion away from the back panel.

[0019] Optionally, the connection structure includes a mounting member and a threaded member. The mounting member is mounted on the inner side surface of the back plate. The mounting member is provided with a plurality of second through holes. The threaded member includes the stud and a limiting portion provided at one end of the stud. The stud passes through the second through hole, and the limiting portion is located on the side of the mounting member facing the back plate.

[0020] Optionally, the battery cavity has two opposite cavity side walls. The battery mounting frame includes a plurality of support plates. A plurality of the support plates are provided on both of the cavity side walls. The plurality of support plates on the same cavity side wall are spaced apart in the up-and-down direction. The plurality of support plates on the two cavity side walls are opposite to each other one by one to form a battery placement position on the opposite support plates on the two cavity side walls; the connecting portion is disposed corresponding to the position between two adjacent support plates.

[0021] In the technical solution of the present utility model, a battery cavity, a mounting cavity and an electronic control cavity are sequentially arranged from top to bottom in the cabinet, and the liquid cooling module is installed in the mounting cavity. In this way, the distance between the liquid cooling module and the mounting cavity can be relatively close, the pipeline length between the liquid cooling module and the battery cavity can be shortened, and thus the loss of the coolant during the flowing process can be reduced. At the same time, a plurality of vertically distributed battery positions are arranged in the battery cavity, and each battery box is horizontally placed corresponding to one battery position, and the liquid supply pipe and the liquid return pipe are respectively arranged on the opposite sides of the battery cavity. In this way, the lengths of both the liquid supply pipe and the liquid return pipe can be relatively short, the loss of the coolant during the flowing process can be reduced, and the coolant can fully exchange heat with the battery box, improving the heat dissipation effect on the battery box. Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained according to the structures shown in these drawings.

[0023] Figure 1 It is a schematic structural diagram of an embodiment of a cabinet-type energy storage system of the present utility model;

[0024] Figure 2 For Figure 1 the structural diagram of the cabinet in

[0025] Figure 3 For Figure 2 the structural diagram of the cabinet when the back plate is hidden and the second cabinet door is opened in

[0026] Figure 4 For Figure 3 the enlarged view of part A in

[0027] Figure 5 is Figure 3 an enlarged view of part B in

[0028] Figure 6 is Figure 2 a schematic structural view of the backplane in

[0029] Figure 7 is Figure 6 an enlarged view of part C in

[0030] Figure 8 is Figure 2 a schematic view of another angle of the cabinet in

[0031] Figure 9 is Figure 8 an enlarged view of part D in

[0032] Explanation of the reference numerals in the drawings:

[0033] 10, cabinet body; 11, battery cavity; 12, electric control cavity; 13, installation cavity; 101, first opening; 102, second opening; 103, third opening; 104, fourth opening; 14, connecting part; 143, first through hole; 20, first cabinet door; 21, first ventilation opening; 30, second cabinet door; 31, second ventilation opening; 40, backplane; 41, mounting member; 411, second through hole; 412, groove; 421, stud; 43, sealing ring; 51, support plate; 52, support frame; 61, heat insulation plate; 62, air guide cylinder; 63, vertical air guide plate; 71, battery box; 72, high-voltage box; 73, energy storage converter; 74, electric control module; 81, liquid cooling module.

[0034] The realization, functional features and advantages of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Specific embodiments

[0035] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0036] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present utility model, the directional indications are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0037] In addition, if the descriptions such as "first" and "second" are involved in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and / or" appearing throughout the text is that it includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, or solution B, or the solution where A and B are satisfied simultaneously. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0038] The present utility model provides a cabinet - type energy storage system.

[0039] In the embodiments of the present utility model, as Figures 1 to 9 shown, it includes a battery box 71 and a cabinet. The cabinet has a battery cavity 11, an electronic control cavity 12, and an installation cavity 13 located between the battery cavity 11 and the electronic control cavity 12. The battery box 71 is disposed in the battery cavity 11. Optionally, the number of battery boxes 71 is multiple, and multiple battery boxes 71 are all disposed in the battery cavity 11.

[0040] In some embodiments, the cabinet - type energy storage system further includes a high - voltage box 72 and an energy storage converter 73. The electronic control cavity 12 is formed with at least two vertical chambers, and the high - voltage box 72 and the energy storage converter 73 are respectively disposed in one vertical chamber.

[0041] In some embodiments, the cabinet - type energy storage system further includes a liquid - cooling system, a circuit device, and multiple battery boxes 71. The battery cavity 11 is provided with multiple battery positions in the up - down direction; each battery box 71 is horizontally placed corresponding to one battery position and is provided with a liquid - cooling flow channel; the liquid - cooling system includes a liquid - supply pipe, a liquid - return pipe, and a liquid - cooling module 81. The liquid - cooling module 81 is horizontally placed in the installation cavity 13 and is connected to the liquid - cooling flow channels of the battery boxes 71 through the liquid - supply pipe and the liquid - return pipe; the circuit device is disposed in the electronic control cavity 12, and the circuit device is connected to the battery boxes 71 and the liquid - cooling module 81.

[0042] Specifically, one end of the liquid - supply pipe is communicated with the liquid outlet of the liquid - cooling module 81. Multiple liquid - supply branch pipes are provided on the liquid - supply pipe, and each liquid - supply branch pipe is correspondingly connected to the liquid - cooling flow channel inlet end of one battery box 71. One end of the liquid - return pipe is communicated with the liquid return port of the liquid - cooling module 81. Multiple liquid - return branch pipes are provided on the liquid - return pipe, and each liquid - return branch pipe is correspondingly connected to the liquid - cooling flow channel outlet end of one battery box 71.

[0043] The technical solution of the present utility model is to sequentially arrange a battery chamber 11, an installation chamber 13, and an electric control chamber 12 from top to bottom within the cabinet, and install the liquid cooling module 81 in the installation chamber 13. In this way, the distance between the liquid cooling module 81 and the installation chamber 13 can be made relatively close, which can shorten the pipeline length between the liquid cooling module 81 and the battery chamber 11, thereby facilitating the reduction of the loss of the coolant during the flow process. At the same time, a plurality of battery positions are arranged vertically in the battery chamber 11, and each battery box 71 is horizontally placed corresponding to one battery position, while the liquid supply pipe and the liquid return pipe are respectively arranged on opposite sides of the battery chamber 11. In this way, the lengths of both the liquid supply pipe and the liquid return pipe can be relatively short, which can reduce the loss of the coolant during the flow process, enable the coolant to fully exchange heat with the battery box 71, and improve the heat dissipation effect on the battery box 71.

[0044] In some embodiments, two heat insulation plates 61 are vertically arranged in the electric control chamber 12, and the two heat insulation plates 61 are arranged at intervals in the width direction of the cabinet to divide the electric control chamber 12 into three vertical chambers. The circuit device includes a high-voltage box 72, an energy storage converter 73, and a control module, and the high-voltage box 72, the energy storage converter 73, and the control module are respectively arranged in one vertical chamber.

[0045] Optionally, one of the high-voltage box 72 and the energy storage converter 73 is arranged in the vertical chamber between the two heat insulation plates 61. The cabinet further includes an air guide cylinder 62, one end of the air guide cylinder 62 is communicated with the vertical chamber between the two heat insulation plates 61, and the other end extends to the fourth opening 104.

[0046] The circuit device includes at least one of a high-voltage box 72, an energy storage converter 73, and a control module (including a circuit breaker, a control circuit, etc.).

[0047] In some embodiments, the cabinet includes a cabinet body 10, a first cabinet door 20, and a back plate 40. The cabinet body 10 has a battery chamber 11, a first opening 101, and a second opening 102. The first opening 101 and the second opening 102 are respectively arranged on opposite sides of the cabinet body 10 and are both communicated with the battery chamber 11. A plurality of connecting parts 14 are provided on the periphery of the second opening 102, and a battery mounting rack is arranged in the battery chamber 11;

[0048] The first cabinet door 20 is rotatably installed at the first opening 101 and has a closed state of covering the first opening 101 and an open state of opening the first opening 101;

[0049] The back plate 40 is integrally formed with the cabinet body 10 and covers the second opening 102. A sealing structure is provided between the back plate 40 and the periphery of the second opening 102, and a connecting structure is provided at the position corresponding to the connecting part 14 on the inner side of the back plate 40;

[0050] Among them, the connecting portion 14 is staggeredly arranged with the battery mounting bracket in the direction from the first opening 101 to the second opening 102, so that the connecting structure can be fixedly connected to the connecting portion 14 through the first opening 101.

[0051] Specifically, during production, the cabinet body 10, the first cabinet door 20 and the back plate 40 can be formed separately. Since the first opening 101 and the second opening 102 are arranged on the opposite sides of the cabinet body 10, it can not only better ensure the sealing performance of the cabinet body 10, but also reduce the production difficulty, thereby reducing the production cost. When the connecting portion 14 is staggeredly arranged with the battery mounting bracket in the direction from the first opening 101 to the second opening 102, the connecting portion 14 can be exposed from the first opening 101, avoiding the battery mounting bracket from blocking the connecting portion 14. Thus, when the back plate 40 is fixed, the connecting structure on the back plate 40 can be fixedly connected to the connecting portion 14 through the first opening 101. In this way, the connecting portion 14 of the back plate 40 and the cabinet body 10 can be located inside the cabinet body 10, avoiding the situation that others disassemble the back plate 40 from the outside. Since the back plate 40 and the cabinet body 10 are fixed by assembly, there are more types of sealing structures to choose from, and it is easy to ensure the sealing performance. In some embodiments, the liquid supply pipe and the liquid return pipe are respectively arranged on the opposite sides of the battery chamber 11, and both the liquid supply pipe and the liquid return pipe are located inside the first opening 101. In this way, it is convenient to disassemble and assemble the liquid supply pipe and the liquid return pipe, and it is convenient for maintenance.

[0052] The technical solution of the present utility model is to set the opposite first opening 101 and second opening 102 on the cabinet body 10, and set the first cabinet door 20 at the first opening 101, and the second opening 102 is sealed by a cover plate. In this way, it is convenient to form the cabinet body 10, and while reducing the cost, the sealing performance of each part of the cabinet body 10 can be better. Since the connecting structure is arranged inside the cover plate and is fixedly connected to the connecting portion 14 inside the cabinet body 10, the situation of setting screw holes between the cabinet body 10 and the cover plate is avoided, the sealing performance between the cover plate and the cabinet body 10 can be improved, and at the same time, there are more optional forms of the sealing structure between the cabinet body 10 and the cover plate, which is more conducive to ensuring the sealing performance between the cabinet body 10 and the cover plate. Thus, while being convenient to form the cabinet body 10 and reducing the production cost of the cabinet, the waterproof performance of the cabinet can be improved, and the risk of water entering the battery chamber 11 can be reduced.

[0053] In some embodiments, the connecting portion 14 is provided with a first through hole 143, the connecting structure has a stud 421, the cabinet further includes a lock nut, the stud 421 passes through the first through hole 143, and the lock nut is screwed on the stud 421 and is located on the side of the connecting portion 14 away from the back plate 40. That is, each connecting portion 14 is provided with a first through hole 143, and the connecting structure is provided with a stud 421 corresponding to each first through hole 143. During installation, the studs 421 are made to pass through the corresponding first through holes 143 one by one, and then the lock nut is locked on the stud 421 in the battery cavity 11 through the first opening 101, so that the cover plate is fixed to the cabinet body 10. Such a structure is simple, easy to install, and can make the cover plate firmly fixed, reducing the risk of the cover plate loosening. Of course, in other embodiments, the connecting structure is provided with a buckle or a rivet to be snap-fitted or riveted to the connecting portion 14. The connecting structure and the connecting portion 14 can also be fixedly welded.

[0054] In some embodiments, the connecting structure includes a mounting member 41 and a threaded member. The mounting member 41 is mounted on the inner side surface of the back plate 40. The mounting member 41 is provided with a plurality of second through holes 411. The threaded member includes a stud 421 and a limiting portion provided at one end of the stud 421. The stud 421 passes through the second through holes 411, and the limiting portion is located on the side of the mounting member 41 facing the back plate 40. Specifically, the size of the limiting portion is larger than the diameter of the first through hole 143. Such a setting can make the connection area between the mounting member 41 and the cover plate larger, and can also strengthen the structural strength of the cover plate through the mounting member 41, reducing the risk of the cover plate deforming under force. Moreover, during installation, a plurality of threaded members can be uniformly arranged in the second through holes 411, without the need to fix the threaded members one by one, which is convenient for installation. Among them, the mounting member 41 and the back plate 40 can be welded or fixed by screws.

[0055] In some embodiments, the connecting structure includes a plurality of mounting members 41. The plurality of mounting members 41 are arranged corresponding to the respective side edges of the first opening 101. Each mounting member 41 is provided with a plurality of second through holes 411, and each second through hole 411 is provided with a threaded member. In this way, a strip-shaped mounting member 41 can be used for installation, which can simplify the structure of the mounting member 41 and is beneficial to reducing the production difficulty and cost.

[0056] In some embodiments, a groove 412 is provided on the side of the mounting member 41 facing the back plate 40. The plurality of second through holes 411 on the mounting member 41 are all located in the groove 412, and the limiting portion is located in the groove 412. In this way, the limiting portion can be received by the groove 412, allowing the mounting member 41 to be in full contact with the cover plate and improving the connection stability between the cover plate and the mounting member 41.

[0057] In some embodiments, the connecting portion 14 includes a fixing plate and a connecting plate that are perpendicularly connected to each other. The fixing plate is connected to the cabinet body 10, and the connecting plate is provided with a first through hole 143. That is, the connecting portion 14 can be integrally formed with the cabinet body 10 separately. During installation, the fixing plate is welded to the cabinet body 10, so that the structure of the connecting portion 14 is simple, and the installation position of the connecting portion 14 is relatively flexible, facilitating installation according to the actual situation of the cabinet body 10.

[0058] In some embodiments, the sealing structure includes at least one sealing ring 43. The sealing ring 43 is disposed around the first opening 101 and abuts between the first opening 101 and the back plate 40. Specifically, the sealing ring 43 is disposed outside the connecting structure. The material of the sealing ring 43 can be rubber or silica gel. During installation, the sealing ring 43 can be adhesively bonded to the periphery of the first opening 101 first, or the sealing ring 43 can be adhesively bonded to the back plate 40 first and then the back plate 40 is installed. In this way, no additional installation structure needs to be provided at the periphery of the first opening 101 and the back plate 40, which can simplify the structures of the cabinet body 10 and the back plate 40 and reduce the production cost of the cabinet. Of course, in other embodiments, the sealing structure is disposed on the cabinet body 10 or the back plate 40 and has an annular groove 412, and a sealant is provided in the annular groove 412.

[0059] In some embodiments, the battery cavity 11 has two opposite cavity side walls. The battery mounting rack includes a plurality of support plates 51. A plurality of support plates 51 are provided on both cavity side walls. The plurality of support plates 51 on the same cavity side wall are spaced apart in the up-and-down direction, and the plurality of support plates 51 on the two cavity side walls are opposite to each other one by one to form a battery placement position on the opposite support plates 51 on the two cavity side walls; the connecting portion 14 is disposed corresponding to the position between two adjacent support plates 51. That is, when installing the battery box 71, one side of the bottom of the battery box 71 is supported on the support plate 51 of one cavity side wall, and the other side of the bottom of the battery box 71 is supported on the support plate 51 of the other cavity side wall. In this way, the structure of the battery mounting rack is simple and has a light weight, which is beneficial to reducing the weight of the cabinet.

[0060] In some embodiments, the battery mounting rack further includes a plurality of support frames 52. The support frames 52 are fixed to the cabinet body 10 and are located below the support plates 51 to support the support plates 51. In this way, the support stability of the plates can be improved.

[0061] In some embodiments, the cabinet body 10 further has an electric control cavity 12, an installation cavity 13, and a third opening 103. The electric control cavity 12 is located below the battery cavity 11, the installation cavity 13 is located between the battery cavity 11 and the electric control cavity 12, the installation cavity 13 is used for installing the liquid cooling module 81, and the electric control cavity 12 is used for installing circuit devices; the third opening 103 is located below the first opening 101 and communicates with the installation cavity 13 and the electric control cavity 12. When the first cabinet door 20 is in the closed state, it covers the first opening 101 and the third opening 103. In this way, the first opening 101 and the third opening 103 can be covered or opened simultaneously by the first cabinet door 20, which is convenient for maintenance, can also reduce the number of cabinet doors, and simplifies the cabinet structure.

[0062] In some embodiments, the cabinet body 10 further has a fourth opening 104. The fourth opening 104 is located below the second opening 102 and communicates with the installation cavity 13 and the electric control cavity 12. The cabinet further includes a second cabinet door 30 which is rotatably installed at the fourth opening 104 for covering or opening the fourth opening 104. In this way, during actual use, the liquid cooling module 81 and the circuit devices can be overhauled and maintained by opening the second cabinet door 30.

[0063] In some embodiments, the first cabinet door 20 is provided with a first ventilation opening 21 at positions corresponding to the installation cavity 13 and the electric control cavity 12, and the second cabinet door 30 is provided with a second ventilation opening 31 at positions corresponding to the installation cavity 13 and the electric control cavity 12, so as to facilitate heat dissipation of the electric control cavity 12 and the installation cavity 13.

[0064] In some embodiments, the cabinet has a battery cavity 11 and an electric control cavity 12 located below the battery cavity 11. The cabinet is provided with a first ventilation opening 21 and a second ventilation opening 31. The first ventilation opening 21 and the second ventilation opening 31 are respectively arranged on opposite sides of the electric control cavity 12 and are both communicated with the electric control cavity 12; the cabinet further includes at least one heat insulation plate 61 which is vertically installed in the electric control cavity 12 to divide the electric control cavity 12 into a plurality of vertical chambers in the width direction of the cabinet. The heat insulation plate 61 extends from the first ventilation opening 21 towards the second ventilation opening 31.

[0065] Specifically, the vertical chambers are used for installing modules such as the high-voltage box 72 and the energy storage converter 73. The heat insulation plate 61 is integrally formed with the cabinet, that is, during installation, the installation position of the heat insulation plate 61 in the electric control cavity 12 can be rotated according to actual needs. Since modules such as the high-voltage box 72 and the energy storage converter 73 are directly supported by the bottom of the cabinet when installed in the vertical chambers and do not require support from the heat insulation plate 61, the installation structure requirements for the heat insulation plate 61 are not high, and even the heat insulation plate 61 does not need to be connected to the cabinet body 10, so that the heat insulation plate 61 can be separated between adjacent two modules. Among them, the heat insulation plate 61 can be made of heat insulation materials such as heat insulation foam.

[0066] The technical solution of the present utility model is to arrange the electronic control cavity 12 below the battery cavity 11, and at least one heat insulation plate 61 is vertically installed in the electronic control cavity 12. The heat insulation plate 61 is used to divide the electronic control cavity 12 into multiple vertical chambers in the width direction of the cabinet, and the heat insulation plate 61 extends from the first ventilation opening 21 on one side of the cabinet to the second ventilation opening 31 on the other side of the cabinet. With such an arrangement, modules such as the high-voltage box 72 can be directly supported by the bottom wall of the cabinet without the need for the heat insulation plate 61 to provide support. Therefore, the requirements for the installation structure of the heat insulation plate 61 are not high, and it is even possible not to connect the heat insulation plate 61 to the cabinet body 10, which can simplify the structure of the heat insulation plate 61 while ensuring the heat insulation performance as much as possible. Moreover, the heat insulation plate 61 can be flexibly arranged according to actual needs, enabling the heat insulation plate 61 to be as close as possible to modules such as the high-voltage box 72, so as to make full use of the space of the electronic control cavity 12, improve the structural compactness of the electronic control cavity 12, and is beneficial to reducing the height of the cabinet body 10 or increasing the accommodation quantity of the battery box 71 at the same height.

[0067] In some embodiments, the cabinet includes at least two heat insulation plates 61, and the heat insulation plates 61 are arranged at intervals in the width direction of the cabinet to divide the electronic control cavity 12 into at least three vertical chambers in the width direction of the cabinet. This can result in a relatively large number of vertical chambers, allowing multiple modules to be installed separately. For example, in some embodiments, the number of heat insulation plates 61 is two, which divides the electronic control cavity 12 into three vertical chambers. One vertical chamber is used to install the high-voltage box 72, one is used to install the energy storage converter 73, and one is used to install the electronic control module 74.

[0068] In some embodiments, the cabinet further includes an air guide cylinder 62. One end of the air guide cylinder 62 communicates with the vertical chamber between the two heat insulation plates 61, and the other end extends to the second ventilation opening 31. After installing the air guide cylinder 62 corresponding to the middle vertical chamber in this way, air ducts corresponding to the two side vertical chambers can be formed between the air guide cylinder 62 and the two side walls of the cabinet, which can reduce the number of components of the cabinet and the installation process. At the same time, the size of the heat insulation plate 61 can be reduced.

[0069] Of course, in other embodiments, the heat insulation plate 61 extends from the first ventilation opening 21 to the second ventilation opening 31. This can reduce the number of components of the cabinet and the installation process.

[0070] In some embodiments, the cabinet includes a cabinet body 10, a first cabinet door 20, and a second cabinet door 30. The first cabinet door 20 is installed on the front side of the cabinet body 10 and is provided with a first ventilation opening 21, and the second cabinet door 30 is installed on the rear side of the cabinet body 10 and is provided with a second ventilation opening 31. In this way, air can enter through one of the first ventilation opening 21 and the second ventilation opening 31 and exit through the other, which is convenient for the heat dissipation of the electronic control cavity 12. And setting the ventilation openings on the cabinet doors can simplify the structure of the cabinet body 10.

[0071] In some embodiments, the cabinet further has an installation cavity 13 located between the battery cavity 11 and the electronic control cavity 12, and the installation cavity 13 is used for installing the liquid cooling module 81. By arranging the installation cavity 13 between the electronic control cavity 12 and the battery cavity 11, during use, the liquid cooling module 81 can be made closer to the battery box 71, reducing the pipeline length, reducing energy loss, and improving the heat dissipation effect.

[0072] In some embodiments, the cabinet body 10 is provided with a first opening 101, a third opening 103, and a fourth opening 104. The first opening 101 communicates with the installation cavity 13. The third opening 103 is located below the first opening 101, and both the electronic control cavity 12 and the installation cavity 13 communicate with the third opening 103. The fourth opening 104 is opposite to the third opening 103, and both the electronic control cavity 12 and the installation cavity 13 communicate with the fourth opening 104. The first cabinet door 20 covers the first opening 101 and the third opening 103, and the second cabinet door 30 covers the fourth opening 104.

[0073] In some embodiments, a heat insulation layer is provided at the position of the first cabinet door 20 corresponding to the first opening 101, and the back plate 40 is provided with a heat insulation layer. In this way, the influence of the ambient temperature on the battery box 71 in a high-temperature environment (such as a sunny day outdoors in summer) can be reduced. Optionally, heat insulation structures are provided at the top and sides of the cabinet body 10.

[0074] In some embodiments, sealing rubber rings are provided at the peripheries of the first opening 101, the third opening, and the fourth opening 104. In this way, the sealing performance between the first cabinet door 20 and the cabinet body 10 can be improved, the risk of water ingress into the cabinet body 10 can be reduced, and the structure is simple and the cost is low.

[0075] In some embodiments, two vertical air guide plates 63 are provided in the installation cavity 13. The two vertical air guide plates 63 are spaced apart to form an air guide channel. One end of the air guide channel is used to communicate with the heat dissipation outlet of the liquid cooling module 81, and the other end extends to the second ventilation opening 31. In this way, the hot air after passing through the liquid cooling module 81 is directly sent out from the second ventilation opening 31, avoiding flowing back into the cabinet body 10, and the heat dissipation effect can be improved.

[0076] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structural transformation made under the inventive concept of the present invention by using the content of the specification and drawings of the present invention, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A cabinet-type energy storage system, characterized in that: include: A cabinet having a battery cavity, an electric control cavity and an installation cavity located between the battery cavity and the electric control cavity, wherein the battery cavity is provided with a plurality of battery positions in the up and down directions; A plurality of battery boxes, each of which is horizontally placed at a corresponding battery position and is provided with a liquid cooling channel; A liquid cooling system, comprising a liquid supply pipe, a liquid return pipe and a liquid cooling module, wherein the liquid cooling module is horizontally placed in the mounting cavity and connected to the liquid cooling channel of the battery box through the liquid supply pipe and the liquid return pipe; as well as A circuit device is arranged in the electric control cavity, and the circuit device is connected to the battery box and the liquid cooling module.

2. The cabinet type energy storage system according to claim 1, characterized in that: The cabinet includes a cabinet body, a first cabinet door and a second cabinet door. The cabinet body is provided with a first opening corresponding to the position of the battery cavity, and is provided with a third opening and a fourth opening corresponding to the positions of the installation cavity and the electric control cavity. The third opening is opposite to the fourth opening. The first cabinet door covers the first opening and the third opening, and the second cabinet door covers the fourth opening.

3. The cabinet type energy storage system according to claim 2, characterized in that: A first vent is provided at a position of the first cabinet door corresponding to the third opening, and a second vent is provided at a position of the second cabinet door corresponding to the fourth opening.

4. The cabinet type energy storage system according to claim 3, characterized in that: Two vertical air guide plates are provided in the installation cavity, and the two vertical air guide plates are spaced apart to form an air guide channel. One end of the air guide channel is connected to an end of the liquid cooling module away from the third opening and is connected to the heat dissipation outlet of the liquid cooling module, and the other end of the air guide channel extends to the fourth opening.

5. The cabinet type energy storage system according to claim 2, characterized in that: Two heat insulation plates are vertically arranged in the electric control cavity, and the two heat insulation plates are arranged at intervals in the width direction of the cabinet to divide the electric control cavity into three vertical chambers. The circuit device includes a high-voltage box, an energy storage inverter and a control module. The high-voltage box, the energy storage inverter and the control module are respectively arranged in one of the vertical chambers.

6. The cabinet type energy storage system according to claim 5, characterized in that: One of the high-voltage box and the energy storage converter is arranged in a vertical chamber between the two insulation boards. The cabinet also includes an air duct, one end of which is connected to the vertical chamber between the two insulation boards and the other end extends to the fourth opening.

7. The cabinet type energy storage system according to claim 5, characterized in that: The cabinet comprises a cabinet body, a first cabinet door and a back plate, the cabinet body has the battery cavity, the electric control cavity, the installation cavity, a first opening and a second opening, the first opening and the second opening are respectively arranged on opposite sides of the cabinet body and are both connected to the battery cavity, a plurality of connecting parts are arranged on the periphery of the second opening, a battery mounting frame is arranged in the battery cavity, and the battery mounting frame is formed with a plurality of the battery positions; The first cabinet door is rotatably mounted at the first opening and has a closed state covering the first opening and an open state opening the first opening; The back plate is formed separately from the cabinet body and covers the second opening. A sealing structure is provided between the periphery of the back plate and the second opening. A connecting structure is provided at a position on the inner side of the back plate corresponding to the connecting portion. The connecting portion and the battery mounting frame are staggered in a direction from the first opening to the second opening, so that the connecting structure can be connected and fixed to the connecting portion from the first opening.

8. The cabinet type energy storage system according to claim 7, characterized in that: The connection part is provided with a first through hole, the connection structure has a stud, and the cabinet further includes a locking nut, the stud passes through the first through hole, the locking nut is screwed on the stud and is located on a side of the connection part away from the back plate.

9. The cabinet type energy storage system according to claim 8, characterized in that: The connection structure includes a mounting member and a threaded member, the mounting member is mounted on the inner side of the back plate, the mounting member is provided with a plurality of second through holes, the threaded member includes the stud and a limiting portion provided at one end of the stud, the stud is passed through the second through hole, and the limiting portion is located on the side of the mounting member facing the back plate.

10. The cabinet type energy storage system according to claim 7, characterized in that: The battery cavity has two opposite cavity side walls, and the battery mounting frame includes a plurality of support plates. The two cavity side walls are each provided with a plurality of support plates, and the plurality of support plates on the same cavity side wall are spaced apart in the up and down directions, and the plurality of support plates on the two cavity side walls are opposite to each other one by one to form a battery placement position on the opposite support plates on the two cavity side walls; the connecting portion is arranged corresponding to the position between two adjacent support plates.

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