CN218957916U - Battery pack of energy storage machine - Google Patents

Abstract

The utility model relates to a battery pack of an energy storage machine, which comprises a case, two sets of cell modules, and conductive copper bars arranged between the two groups of cell modules. The upper cover and the panel arranged on the box body, the two groups of cell modules are respectively arranged in the box body, a support plate is arranged above the corresponding two groups of cell modules in the box body, and the support plate is set There is a BMS circuit board module electrically connected to two groups of cell modules, and the BMS circuit board module includes a BMS circuit board arranged on a plurality of support columns of the support plate, and a BMS circuit board arranged on the support plate below the corresponding BMS circuit board. As for the radiator, signal terminals electrically connected to the BMS circuit board, a plurality of connectors, and an air switch are respectively arranged on the panel, and insulating partitions are arranged between the two groups of cell modules. The utility model has the advantages of simple structure, stable and reliable performance, good insulation performance and convenient assembly.

Description

battery pack for energy storage machine

technical field

The utility model relates to a battery pack, in particular to a battery pack used for an energy storage machine.

Background technique

Household energy storage equipment includes key components such as lithium-ion batteries, energy storage inverters, and control systems. The energy storage scale is between 5-10kWh. Peak-filling and valley-filling and demand-saving electricity charges. For European and American countries, due to the relatively large electricity consumption and the relatively large price difference between peak and valley electricity charges, energy storage systems are usually used by American households to store electric energy during periods of low electricity prices and to store electricity during periods of high electricity prices. It can be used during certain time periods to achieve the purpose of saving electricity bills. In addition, in remote areas and areas where natural disasters such as earthquakes and hurricanes occur frequently, home energy storage systems are used as emergency power sources to avoid the inconvenience caused by frequent power outages due to disasters or other reasons. The energy storage machine is a device used to store electric energy. When there is light, the electric energy generated by photovoltaics is used to supply power to the load through the built-in off-grid energy storage inverter, and to charge the built-in battery pack; when there is no light, it is powered by The built-in storage battery cooperates with the grid to supply power to the AC load. The BMS circuit board of the battery pack of the existing energy storage machine cannot be integrated and modularized, and the modular assembly cannot be realized. The assembly is not convenient, and the layout of the BMS circuit board is unreasonable, resulting in poor heat dissipation performance of the BMS circuit board, resulting in product failure. The temperature rise is high, and the insulation performance between the two sets of cell components of the battery pack is not ideal.

Contents of the invention

The purpose of the utility model is to overcome the defects of the prior art and provide a battery pack of an energy storage machine with simple structure, stable and reliable performance, good insulation performance and convenient assembly.

In order to achieve the above purpose, the utility model adopts a battery pack of an energy storage machine, which includes a chassis, two sets of cell modules, and conductive copper bars arranged between the two sets of cell modules. The chassis includes a box body, a set The upper cover on the box body and the panel arranged on the box body, the two groups of battery modules are respectively arranged in the box body, and a supporting plate is arranged above the corresponding two groups of battery module modules in the box body, the said A BMS circuit board module electrically connected to the two groups of cell modules is arranged on the supporting board, and the BMS circuit board module includes a BMS circuit board arranged on a plurality of supporting columns of the supporting board, and a corresponding BMS circuit board is arranged below the BMS circuit board. The heat sink on the support plate, signal terminals electrically connected to the BMS circuit board, a plurality of connectors, and an air switch are respectively arranged on the said panel, and insulating partitions are arranged between the two groups of battery core modules.

The beneficial effect of the above structure is: the BMS circuit board adopts a modular structure design, thereby facilitating the assembly of the BMS circuit board module and the support plate, and the assembly is more convenient, and the BMS circuit board is arranged on a plurality of support columns of the support plate, which is beneficial to The BMS circuit board dissipates heat, and the radiator can improve the heat dissipation performance of the battery pack, thereby helping to reduce the temperature rise of the battery pack. And the two groups of cell modules are separated by insulating partitions, the creepage distance of the two groups of cell modules is larger, and the insulation performance is better, so the battery pack of the energy storage machine has simple structure, stable and reliable performance, and good insulation performance , The advantages of convenient assembly.

In particular, an insulating baffle is respectively provided between the two groups of battery modules and the box body, and an insulating plate is provided between the two groups of battery modules and the upper cover. The insulating baffle can separate the cell module from the box, which is beneficial to improve the insulation performance of the battery pack, and an insulating plate is arranged between the upper cover and the cell module, which can increase the distance between the cell module and the upper cover. The creepage distance between them, the insulation performance is better.

In particular, an insulating protective plate is provided at the corresponding conductive copper bar in the box. The insulation protection plate can increase the creepage distance between the conductive copper bar and the box body, which is beneficial to improve the insulation performance of the battery pack.

In particular, the cell module includes two fixed end plates symmetrically arranged in the box, a plurality of electric cores arranged between the two fixed end plates, and a steel band ferrule sleeved on the two fixed end plates , the two fixed end plates corresponding to the steel belt ferrules are respectively provided with limit grooves, the steel belt ferrules are engaged in the limit grooves, and constitute the connection between the two fixed end plates and the steel belt ferrules snap fit. Multiple batteries are integrated and modularized through two fixed end plates, which facilitates the modular assembly of the battery module, and the two fixed end plates are clamped and fixed by steel band ferrules, so that the steel band ferrules and fixed ends are convenient The assembly of the board is conducive to improving the assembly efficiency of the battery pack.

In particular, the two fixed end plates are respectively provided with a fixed foot, and the said fixed foot is provided with a screw connected with the box body. The two fixing plates are installed in the box through the fixing feet, so that the modular assembly of the cell module and the box can be realized, and the assembly efficiency is higher.

In particular, two pull rings are symmetrically arranged on one side of the box body. A handle is provided on the box body to facilitate the installation and transportation of the battery pack.

Description of drawings

Fig. 1 is a perspective view of an embodiment of the utility model.

Fig. 2 is a three-dimensional view of the internal structure of the embodiment of the utility model.

Fig. 3 is a front view of the internal structure of the embodiment of the utility model.

Fig. 4 is a perspective view of the utility model embodiment after removing the upper cover.

Fig. 5 is a perspective view of a cell module according to an embodiment of the present invention.

Detailed ways

As shown in Figures 1 to 5, the embodiment of the utility model is a battery pack for an energy storage machine, including a case 10, two sets of cell modules 20, and conductive copper bars 21 arranged between the two sets of cell modules 20, The chassis 10 includes a box body 11, an upper cover 12 arranged on the box body 11, and a panel 13 arranged on the box body 11, and the two groups of cell modules 20 are respectively arranged in the box body 11. A support plate 111 is provided above the corresponding two sets of cell modules 20 in the box body 11, and a BMS circuit board module 30 electrically connected to the two sets of cell modules 20 is provided on the support plate 111. The BMS circuit The board module 30 includes a BMS circuit board 31 arranged on a plurality of support columns 112 of the support plate 111, and a radiator 32 arranged on the support plate 111 corresponding to the lower part of the BMS circuit board 31. The panels 13 are respectively provided with The BMS circuit board 31 is electrically connected to the signal terminal 33 , a plurality of connectors 34 , and an air switch 35 , and an insulating partition 14 is provided between the two groups of cell modules 20 . An insulating baffle 15 is respectively arranged between the two groups of cell modules 20 and the box body 11 , and an insulating plate 16 is arranged between the two groups of cell modules 20 and the upper cover 12 . The insulating baffle can separate the cell module from the box, which is beneficial to improve the insulation performance of the battery pack, and an insulating plate is arranged between the upper cover and the cell module, which can increase the distance between the cell module and the upper cover. The creepage distance between them, the insulation performance is better. An insulating protective plate 17 is provided at the place corresponding to the conductive copper bar 21 in the box body 11 . The insulation protection plate can increase the creepage distance between the conductive copper bar and the box body, which is beneficial to improve the insulation performance of the battery pack. Two pull rings 18 are symmetrically arranged on one side of the box body 11 . A handle is provided on the box body to facilitate the installation and transportation of the battery pack.

As shown in Figures 2, 3 and 5, the battery module 20 includes two fixed end plates 201 symmetrically arranged in the box body 11, a plurality of battery cells 202 arranged between the two fixed end plates 201, The steel band ferrules 203 set on the two fixed end plates 201, the two fixed end plates 201 corresponding to the steel band ferrules 203 are respectively provided with limiting grooves 2010, and the steel band ferrules 203 are engaged It is in the limiting groove 2010 and constitutes a clamping fit between the two fixed end plates 201 and the steel band ferrule 203 . Multiple batteries are integrated and modularized through two fixed end plates, which facilitates the modular assembly of the battery module, and the two fixed end plates are clamped and fixed by steel band ferrules, so that the steel band ferrules and fixed ends are convenient The assembly of the board is conducive to improving the assembly efficiency of the battery pack. The two fixed end plates 201 are respectively provided with a fixed foot 204 , and the fixed foot 204 is provided with a screw 205 connected with the box body 11 . The two fixing plates are installed in the box through the fixing feet, so that the modular assembly of the cell module and the box can be realized, and the assembly efficiency is higher.

The BMS circuit board is designed with a modular structure, which facilitates the assembly of the BMS circuit board module and the support plate, and the assembly is more convenient, and the BMS circuit board is arranged on multiple support columns of the support plate, which is conducive to the heat dissipation of the BMS circuit board and the heat dissipation The cooler can improve the heat dissipation performance of the battery pack, thereby helping to reduce the temperature rise of the battery pack. And the two groups of cell modules are separated by insulating partitions, the creepage distance of the two groups of cell modules is larger, and the insulation performance is better, so the battery pack of the energy storage machine has simple structure, stable and reliable performance, and good insulation performance , The advantages of convenient assembly.

Claims (6)

1. The utility model provides a battery package of energy storage machine, includes quick-witted case, two sets of electric core module, sets up the conductive copper bar between two sets of electric core module, machine case include the box, set up upper cover on the box, set up the panel on the box, two sets of electric core module set up in the box respectively, its characterized in that: the battery cell module comprises a box body, and is characterized in that a supporting plate is arranged at the upper part of the box body corresponding to two groups of battery cell modules, a BMS circuit board module electrically connected with the two groups of battery cell modules is arranged on the supporting plate, the BMS circuit board module comprises a BMS circuit board arranged on a plurality of supporting columns of the supporting plate, a radiator arranged on the supporting plate corresponding to the lower part of the BMS circuit board, signal terminals, a plurality of connectors and an air switch electrically connected with the BMS circuit board are respectively arranged on the panel, and an insulating partition plate is arranged between the two groups of battery cell modules.

2. The battery pack of an energy storage machine of claim 1, wherein: an insulating baffle is arranged between the two groups of battery core modules and the box body respectively, and an insulating plate is arranged between the two groups of battery core modules and the upper cover.

3. The battery pack of an energy storage machine according to claim 1 or 2, wherein: an insulating protection plate is arranged in the box body corresponding to the conductive copper bar.

4. The battery pack of an energy storage machine according to claim 1 or 2, wherein: the cell module comprises two fixed end plates symmetrically arranged in the box body, a plurality of cells arranged between the two fixed end plates and steel belt ferrules sleeved on the two fixed end plates, wherein limit grooves are respectively formed in the positions, corresponding to the steel belt ferrules, of the two fixed end plates, the steel belt ferrules are clamped in the limit grooves, and the two fixed end plates are matched with the steel belt ferrules in a clamping mode.

5. The battery pack of an energy storage machine of claim 4, wherein: the two fixing end plates are respectively provided with a fixing foot, and the fixing feet are provided with screws connected with the box body.

6. The battery pack of an energy storage machine according to claim 1 or 2, wherein: two pull rings are symmetrically arranged on one side of the box body.

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