Modular battery energy storage system

Abstract

The utility model provides a modularized battery energy storage system. The modularized battery energy storage system comprises a base, a battery pack and a top cover, the battery pack is placed on the base and is limited and fixed through a positioning pin, and the top cover is placed on the battery pack and is limited and fixed through a positioning pin and a bolt; the battery pack comprises a pack box body, a battery module, an upper cover, a BMS (Battery Management System) acquisition plate, a BMS starting plate, a BMS mounting plate, a baffle plate, a door lock, a bolt, a power quick-plug terminal, a communication terminal, a starting button, a sealing gasket, an epoxy plate, a handle, a lamp panel and a positioning pin. According to the modular battery energy storage system, the size in the depth direction is reduced by reasonably arranging the arrangement mode of stacking the battery modules and the battery boxes, the occupied space is smaller, and extension of parallel connection of the multiple battery boxes can be achieved; the protection grade performance of the system can be better ensured under the condition that the battery pack is provided with the sealing gasket; floor type installation or wall-mounted installation can be adopted according to actual needs, installation is simple, convenient and free, and installation convenience and structural stability of the battery system are guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of energy storage systems, and specifically relates to a modular battery energy storage system. Background Art

[0002] Energy storage is an important component and key technology of smart grids, renewable energy systems, and energy Internet. It can store excess electricity when energy is sufficient, and output electricity from the energy storage system when energy is insufficient. It is widely used in peak shaving, frequency regulation, emergency power supply, and some power peak shaving and valley filling in energy storage power stations.

[0003] Today’s household energy storage systems have a relatively large capacity. For the convenience of installation and transportation, many products have gradually adopted modular designs. However, the existing designs have several shortcomings: when the battery boxes are connected in parallel, the power harness and communication harness terminals are exposed, which can easily cause safety issues such as misplugging or external short circuits; some products are wall-mounted, which requires high bearing capacity of the wall, especially when multiple battery boxes are connected in parallel, and there is a risk of wall collapse; products generally use the U-box structure commonly used in large energy storage and UPS systems as modules. This structure is close to a square and takes up a lot of space in the depth direction, and does not make use of limited space. Therefore, it is particularly important to design a modular battery energy storage system that is easy to install, safe and reliable, does not rely on wall structure, and occupies a small area. Summary of the invention

[0004] Purpose of the invention: In view of the shortcomings of the prior art, the purpose of the present invention is to provide a modular battery energy storage system.

[0005] Technical solution: The utility model provides a modular battery energy storage system, including a base, a battery pack, and a top cover; the battery pack is placed on the base, and the base and the battery pack are limited and fixed by the positioning pins on the base, and the top cover is placed on the battery pack, and the battery pack and the top cover are limited by the positioning pins on the battery pack, and the battery pack and the top cover are fixed by bolts; the battery pack includes a pack box, a battery module, a top cover, a BMS acquisition board, a BMS start board, a BMS installation board, a baffle, a door lock, a latch, a power quick-plug terminal, a communication terminal, a start button, and an epoxy board; the battery module is set to be arranged in two parallel rows, and the battery module is fixed by bolts Fixed at the bottom of the box; arranging battery modules in parallel can effectively reduce the depth space of the system; the positive electrode of the battery module is connected to the power quick-plug terminal through wiring, and the negative electrode of the battery module is connected to the BMS starter board after being led out and then connected to the power quick-plug terminal through wiring. The BMS starter board plays the role of power control, system disconnection and overcurrent protection; the BMS acquisition board is connected to the CCS on the battery module through a wiring harness to collect temperature and voltage information; the baffle, power quick-plug terminal, and communication terminal are arranged on the left side of the Pack box, the baffle is connected to the Pack box through a latch, and a door lock is provided on the baffle for locking or opening the baffle; the male end of the door lock is arranged on the baffle, and the female end is arranged on the side wall of the Pack box.

[0006] The start button is arranged on the side wall of the Pack box and is connected to the BMS start board through the communication terminal to realize the system disconnection;

[0007] The epoxy board is positioned and fixed to the BMS mounting plate on the Pack box through copper columns to ensure the insulation performance of the internal space.

[0008] The base mainly supports the system. The battery pack is positioned and stacked by the positioning pins on the top of the base. The nuts on the side of the base are bolted to make the overall system more reliable.

[0009] Furthermore, the battery packs are provided in plurality, which are fixed and modularly stacked by positioning pins and bolts on the packs, and the battery packs are connected in parallel by connecting the quick-plug terminals of different battery packs through power harnesses.

[0010] Furthermore, the battery pack also includes a sealing gasket, which is adhered to the surface of the upper cover by adhesive, and when the upper cover is fixed by bolts, it is pressed downward to ensure the sealing of the entire battery pack.

[0011] Furthermore, a hidden handle is provided on the upper cover surface of the battery pack. The hidden handle is provided on the upper cover surface, and is used to transport the battery pack by locking the bolts, and does not occupy the height space of the battery pack, so as to facilitate stacking and combination.

[0012] Furthermore, a light board is provided on the front side wall of the Pack box, which is communicatively connected to the BMS acquisition board and is used to display the operating status and power of the battery Pack in real time.

[0013] Furthermore, the battery module includes 8 single cells.

[0014] Furthermore, a waist hole is provided on the side of the battery pack, and the system lead-out cable can be led out and connected through the side waist hole.

[0015] Furthermore, the base and the battery pack are provided with a plurality of fixing holes, which are convenient for floor-standing fixed installation and wall-mounting.

[0016] The top cover is inserted into position through the positioning pins on the top of the battery pack and is locked through the fixing bolts in the waist holes on the back, so that the entire system has a certain shape design, which can not only shield the cables but also ensure the protection of the top of the battery pack shell.

[0017] The modular battery energy storage system reduces the depth dimension by rationally arranging the battery modules and stacking the battery boxes, and occupies less space. The power harness and communication harness are completely hidden by setting the side doors of the battery box and the control box, which is both beautiful and safe. The ground installation and side fixed connection ensure the convenience of battery system installation and the structural stability of the battery system. Therefore, the modular user energy storage battery system has a good application prospect in the field of energy storage.

[0018] Beneficial effects: Compared with the prior art, the utility model has the following advantages: (1) The battery modules are arranged in parallel, and the positive and negative electrodes are led out in the left and right directions, which effectively reduces the depth of the battery box. The battery packs are stacked up and down, and multiple battery boxes can be expanded in parallel; (2) The hidden handle on the top of the battery pack does not occupy the height space of the battery pack, which is convenient for stacking and combination. The stacked installation structure enables the battery pack to better ensure the protection level performance of the system when equipped with a sealing gasket; (3) A battery pack is an independent energy storage control system, and no additional control box is required; (4) It can be installed on the floor or against the wall according to actual needs, which is simple and free to install. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the modular battery energy storage system structure provided by the utility model;

[0020] Figure 2 A schematic diagram of the Pack box structure in the modular battery energy storage system provided by the utility model;

[0021] Figure 3 This is a schematic diagram of the base structure in the modular battery energy storage system provided by the utility model. DETAILED DESCRIPTION

[0022] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0023] like Figure 1-Figure 3 As shown, the utility model provides a modular battery energy storage system, including a base 1, a battery Pack 2, and a top cover 3; the battery Pack 2 is placed on the base 1, and the base 1 and the battery Pack 2 are limited and fixed by the positioning pins 4 on the base 1, and the top cover 3 is placed on the battery Pack 2, and the battery Pack 2 and the top cover 3 are limited by the positioning pins 4 on the battery Pack 2, and the battery Pack 2 and the top cover 3 are fixed by bolts; the battery Pack 2 includes a Pack box 201, a battery module 202, an upper cover 203, a BMS acquisition board 204, a BMS start board 205, a BMS installation board 206, a baffle 207, a door lock 208, a latch 209, a power quick-plug terminal 210, a communication terminal 211, a start button 212, and an epoxy board 214;

[0024] The battery modules 202 are arranged in parallel in two pieces, and the battery modules 202 are fixed to the bottom of the box 201 by bolts. The parallel arrangement can effectively reduce the depth of the system space; the positive pole of the battery module 202 is connected to the power quick-plug terminal 210 through wiring, and the negative pole of the battery module 202 is first connected to the BMS starter board 205 and then connected to the power quick-plug terminal 210 through wiring. The BMS starter board 205 plays the role of power control, system disconnection and overcurrent protection; the BMS acquisition board 204 is connected to the CCS on the battery module 202 through a wiring harness to collect temperature and voltage information; the baffle 207, the power quick-plug terminal 210, and the communication terminal The sub-pin 211 is arranged on the left side of the Pack box 201, the baffle 207 is connected to the Pack box 201 through the latch 209, and the baffle 207 is provided with a door lock 208 for locking or opening the baffle 207. The male end of the door lock 208 is arranged on the baffle 207, and the female end is arranged on the side wall of the Pack box 201; the start button 212 is arranged on the side wall of the Pack box 201, and is connected to the BMS start board 205 through the communication terminal 211 to realize the disconnection of the system; the epoxy board 214 is positioned and fixed to the BMS mounting board 206 on the Pack box 201 through the copper column to ensure the insulation performance of the internal space.

[0025] The base 1 mainly supports the system. The battery pack 2 is positioned and stacked by the positioning pin 4 on the top of the base 1. The nuts on the side of the base are tightened with bolts to make the overall system installation more reliable.

[0026] Two battery Packs 2 are provided, which are fixed in position and modularly stacked by means of positioning pins 4 and bolts on the Packs 2, and the quick-connect terminals 210 of the two battery Packs 2 are connected by a power harness to realize parallel connection of the battery Packs 2.

[0027] The battery pack 2 also includes a sealing gasket 213, which is adhered to the surface of the upper cover 203 by adhesive. When the upper cover 203 is fixed by bolts, it is pressed downward to ensure the sealing of the entire battery pack.

[0028] A hidden handle 215 is provided on the surface of the upper cover 203 of the battery Pack 2, which is used to transport the battery Pack 2 by locking the bolts, and does not occupy the height space of the battery Pack 2, so as to facilitate stacking and assembly.

[0029] A light board 216 is provided on the front side wall of the Pack box 201, which is in communication connection with the BMS acquisition board 204 and is used to display the operating status and power of the battery Pack in real time.

[0030] Battery module 202 consists of 8 single cells, CCS, steel tie, structural parts, etc.

[0031] There is a waist hole on the side of the battery pack 2, and the system lead-out cable can be connected through the side waist hole, so that the whole system has a certain shape design, which can not only play the role of shielding the cables, but also ensure the protection of the top of the battery pack 2 shell.

[0032] The base 1 and the battery pack 2 are provided with a plurality of fixing holes, which are convenient for floor-standing fixed installation and wall-mounting.

[0033] The following takes two modular battery packs 2 in parallel as an example to illustrate the implementation process of the modular household energy storage battery system: Step 1, place and fix the base to the specified position or against the wall; Step 2, screw the positioning pins into the upper surface of the base 1 to ensure that it is locked; Step 3, place the first battery pack on the base, and position it through the positioning pins of the base when placing it; Step 4, place the second battery pack 2 on the first battery pack 2, and position it through the positioning pins of the first battery pack when placing it; Step 5, place the top cover on the second battery pack, and position it through the positioning pins of the second battery pack when placing it; Step 6, place the fixing parts on the nut holes of the base and the battery pack, adjust the position, and lock it with bolts; the connection between the first battery pack and the second battery pack is the same; Step 7, align the top cover with the positioning pins on the second battery pack, and then fix it with the bolts on the back of the top cover 3; Step 8, connect the power harness and communication harness on one side of the battery pack; Step 9, lead out the system total power line and communication line to connect with the inverter.

[0034] The modular battery energy storage system provided by the utility model reduces the size in the depth direction by rationally arranging the battery modules and stacking the battery boxes, and occupies less space; the power harness and the communication harness are completely hidden by arranging the side doors of the battery box and the control box, which is both beautiful and safe; the ground installation and side fixed connection method ensures the convenience of battery system installation and the structural stability of the battery system, and has a good application prospect in the field of energy storage.

Claims

1. A modular battery energy storage system, characterized in that: The battery pack (2) comprises a base (1), a battery pack (2), and a top cover (3); the battery pack (2) is placed on the base (1), and the base (1) and the battery pack (2) are limited and fixed by means of positioning pins (4) on the base (1); the top cover (3) is placed on the battery pack (2), and the battery pack (2) and the top cover (3) are limited by means of positioning pins (4) on the battery pack (2); the battery pack (2) and the top cover (3) are fixed by means of bolts; the battery pack (2) comprises a pack box (201), a battery module (202), a top cover (203), a BMS acquisition board (204), a BMS start board (205), a BMS installation board (206), a baffle (207), a door lock (208), a latch (209), a power quick-plug terminal (210), a communication terminal (211), a start button (212), and an epoxy board (214); The battery modules (202) are arranged in parallel in two pieces, and the battery modules (202) are fixed to the bottom of the box (201) by bolts; The positive electrode of the battery module (202) is connected to the power quick-plug terminal (210) through wiring, and the negative electrode of the battery module (202) is first connected to the BMS starter board (205) and then connected to the power quick-plug terminal (210) through wiring; The BMS acquisition board (204) is connected to the CCS on the battery module (202) via a wiring harness; The baffle (207), the power quick-plug terminal (210), and the communication terminal (211) are arranged on the left side of the Pack box (201); the baffle (207) is connected to the Pack box (201) via a latch (209); and a door lock (208) is provided on the baffle (207) for locking or opening the baffle (207); The start button (212) is arranged on the side wall of the Pack box (201) and is communicatively connected with the BMS start board (205) via the communication terminal (211); The epoxy plate (214) is positioned and fixed on the BMS mounting plate (206) on the Pack box (201).

2. The modular battery energy storage system according to claim 1, characterized in that: The battery pack (2) is provided in plurality, and is fixed in position and modularly stacked by means of positioning pins (4) and bolts on the pack (2), and the battery packs (2) are connected in parallel by means of a power harness to the quick-plug terminals (210) of different battery packs (2).

3. The modular battery energy storage system according to claim 1, characterized in that: The battery pack (2) also includes a sealing gasket (213) which is adhered to the surface of the upper cover (203) by means of adhesive.

4. The modular battery energy storage system according to claim 1, characterized in that: A hidden handle (215) is provided on the surface of the upper cover (203) of the battery pack (2).

5. The modular battery energy storage system according to claim 1, characterized in that: A light board (216) is provided on the front side wall of the Pack box (201) and is communicatively connected to the BMS acquisition board (204).

6. The modular battery energy storage system according to claim 1, characterized in that: The battery module (202) includes 8 single battery cells.

7. The modular battery energy storage system according to claim 1, characterized in that: The battery pack (2) is provided with a waist hole on its side.

8. The modular battery energy storage system according to claim 1, characterized in that: The base (1) and the battery pack (2) are provided with a plurality of fixing holes.

Images