Integrated structure of distributed energy storage system

Abstract

The utility model provides an integrated structure of a distributed energy storage system, which comprises an energy storage cabinet, a battery module, a fire fighting system, a power distribution and control system, a PCS module, a heat dissipation air duct, a heat management air conditioner and a direct current control box are integrated in the energy storage cabinet, and a battery fixing assembly is fixedly installed on the inner wall of the energy storage cabinet. According to the utility model, the battery module is conveniently mounted in the energy storage cabinet in a loading and unloading manner through the battery fixing assembly, and the left and right clamping mechanisms are matched with the elastic structure to clamp and limit the battery module from the left and right directions; the upper and lower bearing mechanisms are arranged to be matched with the traction structure, so that the battery module can be supported from the bottom, meanwhile, auxiliary fixing can be conducted from the top of the battery module, and bottom rollers in the upper and lower bearing mechanisms can be driven in the assembling and disassembling processes of the battery module; in the assembling and disassembling process, the stability is ensured, and meanwhile, the bolts do not need to be repeatedly disassembled, so that a worker can conveniently install or replace the battery module.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage systems, in particular to an integrated structure of a distributed energy storage system. Background Art

[0002] Distributed energy storage system is a new type of technological equipment that can effectively utilize electric energy. It combines energy storage technology with distributed power generation technology and can be used to store and supply electricity. At present, the battery energy storage system is mainly in the form of container energy storage. In a standard or non-standard container, multiple battery clusters are connected in parallel to the PCS (energy storage converter) through the DC side, and AC power distribution, thermal management, fire protection, EMS, etc. are designed to realize the container integration of the energy storage system.

[0003] The core of the distributed energy storage system is the battery. In order to achieve higher energy storage efficiency, multiple groups of battery modules are often integrated inside the container. At present, the battery modules are directly installed in the container by bolts. However, due to the large number of battery modules, the bolts need to be repeatedly removed during installation. In addition, the battery modules are also frequently replaced components in the distributed energy storage system. The cumbersome installation method makes the replacement of battery modules inconvenient. Utility Model Content

[0004] The purpose of the utility model is to provide an integrated structure of a distributed energy storage system to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] An integrated structure of a distributed energy storage system comprises an energy storage cabinet, wherein a battery module, a fire protection system, a power distribution and control system, a PCS module, a heat dissipation duct, a thermal management air conditioner and a DC control box are integrated inside the energy storage cabinet, a battery fixing assembly is fixedly installed on the inner wall of the energy storage cabinet, the battery module is installed inside the energy storage cabinet through the battery fixing assembly, the battery fixing assembly is divided into left and right clamping mechanisms and upper and lower supporting mechanisms, the left and right clamping mechanisms comprise a base plate and a clamping plate, the clamping plate is parallelly and movably arranged on the base plate through an elastic structure, the base plate is detachably installed on the inner wall of the energy storage cabinet, one side of the clamping plate is attached to the side surface of the battery module, the upper and lower supporting mechanisms comprise a connecting arm, a bottom roller and a top pressing plate, the top pressing plate is movably connected to the bottom roller through a traction structure, the connecting arm is installed on the surface of the base plate, the bottom roller is rotatably arranged between two connecting arms, the bottom roller contacts the bottom surface of the battery module, and the top pressing plate contacts the top surface of the battery module.

[0007] Preferably, the elastic structure includes a first connecting seat, a second connecting seat, a traction arm and a torsion spring, the first connecting seat is fixedly mounted on the side of the clamp, the second connecting seat is slidably mounted on the surface of the base plate, the two ends of the traction arm are hinged to the first connecting seat and the second connecting seat respectively, and the torsion spring is installed at the hinge between the traction arm and the first connecting seat and at the hinge between the traction arm and the second connecting seat.

[0008] Preferably, the left and right clamping mechanisms further include a fixing seat mounted on the base plate, and a supporting seat mounted on the clamping plate, wherein the supporting seat is movably disposed inside the fixing seat, and the supporting seat is concentrically disposed with the fixing seat.

[0009] Preferably, the traction structure includes a rotating shaft, a guide rod, a gear and a gear tooth portion, the top end of the guide rod is fixed to the bottom of the top pressure plate, the guide rod passes through and is slidably arranged on the surface of the base plate, the gear tooth portion is arranged at the end of the guide rod, the rotating shaft is fixed to both ends of the bottom roller and rotates on the connecting arm, one end of the rotating shaft passes through the connecting arm, and the gear is fixed to one end of the rotating shaft and is matched with the gear tooth portion.

[0010] Preferably, the upper and lower supporting mechanisms further include a silicone protective pad fixed to the bottom of the top pressure plate, and a layer of insulating rubber pad bonded to the surface of the bottom roller.

[0011] Preferably, the base plate is directly mounted inside the energy storage cabinet by bolts, and each of the battery fixing assemblies is equidistantly distributed inside the energy storage cabinet according to the specific size of the battery module.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The utility model uses a battery fixing assembly to install the battery module inside the energy storage cabinet in a form that is easy to load and unload, wherein the left and right clamping mechanisms are set in conjunction with the elastic structure to clamp and limit the battery module from the left and right directions, and the upper and lower supporting mechanisms are set in conjunction with the traction structure to support the battery module from the bottom and provide auxiliary fixation from the top of the battery module. The bottom rollers in the upper and lower supporting mechanisms can be driven during the loading and unloading process of the battery module, and stability is ensured during the loading and unloading process without the need to repeatedly remove the bolts, thereby facilitating the staff to install or replace the battery module. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the main structure of the energy storage cabinet of the utility model;

[0015] Figure 2 This is a schematic diagram of the installation of the battery fixing assembly of the utility model on the battery module;

[0016] Figure 3This is a schematic diagram of the bottom structure of the battery fixing assembly of the utility model;

[0017] Figure 4 This is a schematic diagram of the main structure of the battery fixing assembly of the utility model;

[0018] Figure 5 This is a schematic diagram of the main structure of the traction structure of the utility model;

[0019] Figure 6 It is a schematic diagram of the connection structure between the base plate and the clamping plate of the utility model.

[0020] In the figure: 1. Energy storage cabinet; 2. Battery module; 3. Fire protection system; 4. Power distribution and control system; 5. PCS module; 6. Cooling duct; 7. Thermal management air conditioner; 8. DC control box; 9. Battery fixing assembly; 91. Left and right clamping mechanism; 911. Base plate; 912. Clamping plate; 913. Fixing seat; 914. Support seat; 92. Upper and lower supporting mechanism; 921. Connecting arm; 922. Bottom roller; 923. Top pressure plate; 924. Silicone protective pad; 925. Insulating rubber pad; 10. Elastic structure; 101. First connecting seat; 102. Second connecting seat; 103. Traction arm; 104. Torsion spring; 11. Traction structure; 111. Rotating shaft; 112. Guide rod; 113. Gear; 114. Gear tooth part. DETAILED DESCRIPTION

[0021] 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.

[0022] See also Figure 1-6 The utility model provides an integrated structure of a distributed energy storage system, including an energy storage cabinet 1, wherein a battery module 2, a fire protection system 3, a power distribution and control system 4, a PCS module 5, a heat dissipation duct 6, a thermal management air conditioner 7 and a DC control box 8 are integrated in the energy storage cabinet 1, and a battery fixing assembly 9 is fixedly installed on the inner wall of the energy storage cabinet 1, and the battery module 2 is installed in the interior of the energy storage cabinet 1 through the battery fixing assembly 9, and the battery fixing assembly 9 is divided into a left and right clamping mechanism 91 and an upper and lower supporting mechanism 92;

[0023] The left and right clamping mechanism 91 includes a base plate 911 and a clamping plate 912. The clamping plate 912 is parallelly and movably arranged on the base plate 911 through an elastic structure 10. The base plate 911 is detachably installed on the inner wall of the energy storage cabinet 1. One side of the clamping plate 912 is attached to the side of the battery module 2. The left and right clamping mechanism 91 also includes a fixed seat 913 installed on the base plate 911, and a support seat 914 installed on the clamping plate 912. The support seat 914 is movably arranged inside the fixed seat 913, and the support seat 914 is concentrically arranged with the fixed seat 913.

[0024] The outer shell of the battery module 2 is mostly smooth and has no protrusions, and the battery module 2 needs to be pushed in horizontally when it is installed into the energy storage cabinet 1. Therefore, in this embodiment, when installing the battery module 2, one end of the battery module 2 needs to be inserted between the two clamps 912. At this time, the battery module 2 will squeeze the clamp 912, and the clamp 912 will translate in the direction close to the substrate 911 after being pressurized, and simultaneously apply pressure to the elastic structure 10. The battery module 2 is clamped and fixed by the reverse force of the elastic structure 10, and then the battery module 2 is slowly translated until it completely enters the energy storage cabinet 1.

[0025] In this embodiment, the following elastic structure 10 is provided: the elastic structure 10 includes a first connecting seat 101, a second connecting seat 102, a traction arm 103 and a torsion spring 104, the first connecting seat 101 is fixedly installed on the side of the clamping plate 912, the second connecting seat 102 is slidably installed on the surface of the base plate 911, the two ends of the traction arm 103 are respectively hinged to the first connecting seat 101 and the second connecting seat 102, and the torsion spring 104 is installed at the hinge between the traction arm 103 and the first connecting seat 101 and the hinge between the traction arm 103 and the second connecting seat 102.

[0026] Specifically, when the clamp 912 is subjected to pressure from the battery module 2, the clamp 912 will move toward the direction close to the substrate 911. At this time, since the distance between the clamp 912 and the substrate 911 gradually decreases, the clamp 912 can drive one end of the traction arm 103 to rotate through the first connecting seat 101, thereby causing the other end of the traction arm 103 to rotate on the second connecting seat 102 while continuously pushing the second connecting seat 102 to move toward one end of the substrate 911. Overall, the two ends of the traction arm 103 rotate inside the first connecting seat 101 and the second connecting seat 102 respectively, so that the two ends of the traction arm 103 can drive the torsion spring 104 to deform when rotating, and the elastic force generated when the torsion spring 104 deforms will push the clamp 912 in the opposite direction, thereby clamping and fixing the battery module 2.

[0027] It should be noted that after the energy storage cabinet 1 is processed, the battery fixing assembly 9 can be installed inside the energy storage cabinet 1 first, and the battery module 2 can be installed when the energy storage cabinet 1 and the battery module 2 are transported to the installation site.

[0028] The upper and lower supporting mechanism 92 includes a connecting arm 921, a bottom roller 922 and a top pressure plate 923. The top pressure plate 923 is movably connected to the bottom roller 922 through the traction structure 11. The connecting arm 921 is installed on the surface of the substrate 911. The bottom roller 922 is rotatably set between the two connecting arms 921. The bottom roller 922 contacts the bottom surface of the battery module 2, and the top pressure plate 923 contacts the top surface of the battery module 2. The upper and lower supporting mechanism 92 also includes a silicone protective pad 924 fixed to the bottom of the top pressure plate 923, and a layer of insulating rubber pad 925 bonded to the surface of the bottom roller 922.

[0029] When the battery module 2 enters the energy storage cabinet 1 horizontally, the bottom of the battery module 2 needs to be in contact with the bottom roller 922 at all times. After the battery module 2 is installed, it is necessary to ensure that there is no gap between the bottom of the battery module 2 and the bottom roller 922. Since a layer of insulating rubber pad 925 is bonded to the surface of the bottom roller 922, there will be a large friction force between the bottom of the battery module 2 and the insulating rubber pad 925. This friction force will drive the bottom roller 922 to rotate, thereby facilitating the entry and removal of the battery module 2. After the battery module 2 is installed, the top pressure plate 923 will be driven by the traction structure 11 to press it against the bottom roller 922 from the top of the battery module 2, thereby further improving the stability of the installation of the battery module 2.

[0030] In this embodiment, the following traction structure 11 is provided: the traction structure 11 includes a rotating shaft 111, a guide rod 112, a gear 113 and a gear tooth portion 114, the top end of the guide rod 112 is fixed to the bottom of the top pressure plate 923, the guide rod 112 passes through and is slidably arranged on the surface of the base plate 911, the gear tooth portion 114 is arranged at the end of the guide rod 112, the rotating shaft 111 is fixed to both ends of the bottom roller 922 and rotates on the connecting arm 921, one end of the rotating shaft 111 passes through the connecting arm 921, and the gear 113 is fixed to one end of the rotating shaft 111 and is matched with the gear tooth portion 114.

[0031] Specifically, when the battery module 2 enters the energy storage cabinet 1, the battery module 2 drives the bottom roller 922 to rotate through the friction between the battery module 2 and the insulating rubber pad 925. When the bottom roller 922 rotates, it can drive the gear 113 to rotate synchronously through the rotating shaft 111. Please refer to Figure 2Assuming that the battery module 2 enters the energy storage cabinet 1 in the direction of the arrow, the bottom roller 922 will drive the gear 113 to rotate clockwise through the rotating shaft 111. When the gear 113 rotates clockwise, it can pull down the guide rod 112 through the gear tooth portion 114, so that the guide rod 112 drives the top pressure plate 923 to move downward synchronously. When the horizontal movement of the battery module 2 stops, the top pressure plate 923 just makes the silicone protective pad 924 at the bottom contact with the top of the battery module 2, thereby cooperating with the bottom roller 922 to achieve auxiliary fixation of the battery module 2.

[0032] The base plate 911 is directly mounted inside the energy storage cabinet 1 by means of bolts, and each battery fixing assembly 9 is evenly distributed inside the energy storage cabinet 1 according to the specific size of the battery module 2 .

[0033] It should be noted that since the bolts can be disassembled and no loss will occur before and after loading and unloading, the way the bolts are installed on the substrate 911 is a detachable connection. In this embodiment, only one solution is provided for reference. Since the specific dimensions of the battery modules 2 of different specifications may be different, it is necessary to measure the actual dimensions of the battery modules 2 before installing the substrate 911 so that the internal space of the energy storage cabinet 1 can achieve a higher utilization rate.

[0034] 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 integrated structure of a distributed energy storage system, comprising an energy storage cabinet (1), wherein a battery module (2), a fire protection system (3), a power distribution and control system (4), a PCS module (5), a heat dissipation duct (6), a thermal management air conditioner (7) and a DC control box (8) are integrated inside the energy storage cabinet (1), characterized in that: A battery fixing assembly (9) is fixedly mounted on the inner wall of the energy storage cabinet (1), and the battery module (2) is mounted inside the energy storage cabinet (1) via the battery fixing assembly (9); The battery fixing assembly (9) is divided into left and right clamping mechanisms (91) and upper and lower supporting mechanisms (92); The left and right clamping mechanisms (91) comprise a base plate (911) and a clamping plate (912); the clamping plate (912) is arranged on the base plate (911) in parallel and movably via an elastic structure (10); the base plate (911) is detachably mounted on the inner wall of the energy storage cabinet (1); and one side of the clamping plate (912) is attached to the side surface of the battery module (2); The upper and lower supporting mechanisms (92) comprise a connecting arm (921), a bottom roller (922) and a top pressure plate (923); the top pressure plate (923) is movably connected to the bottom roller (922) via a traction structure (11); the connecting arm (921) is mounted on the surface of a base plate (911); the bottom roller (922) is rotatably disposed between the two connecting arms (921); the bottom roller (922) contacts the bottom surface of the battery module (2); and the top pressure plate (923) contacts the top surface of the battery module (2).

2. The integrated structure of a distributed energy storage system according to claim 1, characterized in that: The elastic structure (10) comprises a first connecting seat (101), a second connecting seat (102), a traction arm (103) and a torsion spring (104); the first connecting seat (101) is fixedly mounted on a side surface of a clamping plate (912); the second connecting seat (102) is slidably mounted on a surface of a base plate (911); two ends of the traction arm (103) are respectively hinged to the first connecting seat (101) and the second connecting seat (102); and the torsion spring (104) is mounted at a hinge between the traction arm (103) and the first connecting seat (101) and at a hinge between the traction arm (103) and the second connecting seat (102).

3. The integrated structure of a distributed energy storage system according to claim 2, characterized in that: The left and right clamping mechanisms (91) further include a fixing seat (913) mounted on the base plate (911), and a supporting seat (914) mounted on the clamping plate (912); the supporting seat (914) is movably arranged inside the fixing seat (913), and the supporting seat (914) and the fixing seat (913) are arranged concentrically.

4. The integrated structure of a distributed energy storage system according to claim 1, characterized in that: The traction structure (11) comprises a rotating shaft (111), a guide rod (112), a gear (113) and a gear tooth portion (114); the top end of the guide rod (112) is fixed to the bottom of the top pressure plate (923); the guide rod (112) penetrates and is slidably arranged on the surface of the base plate (911); the gear tooth portion (114) is arranged at the end of the guide rod (112); the rotating shaft (111) is fixed to both ends of the bottom roller (922) and rotates on the connecting arm (921); one end of the rotating shaft (111) penetrates the connecting arm (921); the gear (113) is fixed to one end of the rotating shaft (111) and is matched and connected with the gear tooth portion (114).

5. The integrated structure of a distributed energy storage system according to claim 4, characterized in that: The upper and lower supporting mechanism (92) further comprises a silicone protective pad (924) fixed to the bottom of the top pressing plate (923), and a layer of insulating rubber pad (925) bonded to the surface of the bottom roller (922).

6. The integrated structure of a distributed energy storage system according to claim 1, characterized in that: The base plate (911) is directly mounted inside the energy storage cabinet (1) by means of bolts, and each of the battery fixing assemblies (9) is equidistantly distributed inside the energy storage cabinet (1) according to the specific size of the battery module (2).

Images