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 machine case, two groups of battery core modules and conductive copper bars arranged between the two groups of battery core modules, wherein the machine case comprises a box body, an upper cover arranged on the box body and a panel arranged on the box body, the two groups of battery core modules are respectively arranged in the box body, a support plate is arranged above the corresponding two groups of battery core modules in the box body, a BMS circuit board module electrically connected with the two groups of battery core modules is arranged on the support plate, the BMS circuit board module comprises BMS circuit boards arranged on a plurality of support columns of the support plate, and a radiator arranged on the support plate and 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 boards are respectively arranged on the panel, and an insulating partition plate is arranged between the two groups of battery core modules. The utility model has the advantages of simple structure, stable and reliable performance, good insulating property and convenient assembly.

Description

Battery pack of energy storage machine

Technical Field

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

Background

The household energy storage equipment comprises key components such as a lithium ion battery, an energy storage inverter, a control system and the like, the energy storage scale is between 5 and 10kWh, the household photovoltaic system can be matched to meet the daily electricity demand of a household, peak clipping and valley filling are realized, the required electricity charge is saved, the peak valley electricity charge has larger price difference for European and American countries due to larger electricity consumption, and the energy storage system is usually used by the U.S. household for storing electric energy in a period with low electricity price and using the energy storage system in a period with high electricity price so as to achieve the purpose of saving the electricity charge. In addition, in remote areas and areas where natural disasters such as earthquakes and hurricanes are high, the household energy storage system is used as an emergency power supply, so that inconvenience caused by frequent power failure due to disasters or other reasons is avoided. The energy storage machine is used for storing electric energy, and when illumination exists, the electric energy generated by photovoltaic is supplied to a load through the built-in off-grid energy storage inverter and charges the built-in storage battery; when no illumination is available, the built-in storage battery is matched with a power grid to supply power to the alternating current load. The BMS circuit board of the battery pack of the existing energy storage machine cannot be integrated and modularized, modular assembly cannot be achieved, assembly is inconvenient, and the layout of the BMS circuit board is unreasonable, so that the heat dissipation performance of the BMS circuit board is poor, the temperature rise of a product is high, and the insulation performance between two groups of battery core assemblies of the battery pack is not ideal.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provide the battery pack of the energy storage machine, which has the advantages of simple structure, stable and reliable performance, good insulating property and convenience in assembly.

In order to achieve the above purpose, the battery pack of the energy storage machine comprises a machine case, two groups of battery core modules and conductive copper bars arranged between the two groups of battery core modules, wherein the machine case comprises a box body, an upper cover arranged on the box body and a panel arranged on the box body, the two groups of battery core modules are respectively arranged in the box body, a support plate is arranged above the battery core modules corresponding to the two groups of battery core modules in the box body, a BMS circuit board module electrically connected with the two groups of battery core modules is arranged on the support plate, the BMS circuit board module comprises BMS circuit boards arranged on a plurality of support columns of the support plate, and a radiator arranged on the support plate corresponding to the position below the BMS circuit board, signal terminals electrically connected with the BMS circuit boards, a plurality of connectors and an air switch are respectively arranged on the panel, and an insulating partition plate is arranged between the two groups of battery core modules.

The beneficial effects of the structure are as follows: adopt the modularized structural design with the BMS circuit board to the assembly of BMS circuit board module and backup pad of being convenient for, the assembly is more convenient, and the BMS circuit board sets up on a plurality of support columns of backup pad, is favorable to the BMS circuit board heat dissipation, and the radiator can improve the heat dispersion of this battery package, thereby is favorable to reducing the temperature rise of this battery package. And two groups of battery cells are separated by an insulating partition board, and the creepage distance of the two groups of battery cells is larger, and the insulating property is better, so that the battery pack of the energy storage machine has the advantages of simple structure, stable and reliable performance, good insulating property and convenience in assembly.

Specifically, an insulating baffle is respectively arranged between the two groups of battery core modules and the box body, and an insulating plate is arranged between the two groups of battery core modules and the upper cover. The insulating baffle can separate the battery cell module from the box body, so that the insulating performance of the battery pack is improved, an insulating plate is arranged between the upper cover and the battery cell module, the creepage distance between the battery cell module and the upper cover can be increased, and the insulating performance is better.

Particularly, an insulating protection plate is arranged in the box body corresponding to the conductive copper bar. The creepage distance between the conductive copper bars and the box body can be increased by the insulating protection plate, and the insulating performance of the battery pack can be improved.

The battery cell module comprises two fixed end plates symmetrically arranged in the box body, a plurality of battery 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. The plurality of battery cells are integrated and modularized through the two fixed end plates, so that the modularized assembly of the battery cell module is facilitated, and the two fixed end plates are fixed through the steel belt ferrule in a clamping manner, so that the assembly of the steel belt ferrule and the fixed end plates is facilitated, and the assembly efficiency of the battery pack is improved.

Specifically, two fixed end plates are respectively provided with a fixed foot, and the fixed feet are provided with screws connected with the box body. The two fixing plates are arranged in the box body through the fixing pins, so that the modular assembly of the battery cell module and the box body can be realized, and the assembly efficiency is higher.

In particular, two pull rings are symmetrically arranged on one side of the box body. The handle is arranged on the box body, so that the battery pack can be conveniently installed and carried.

Drawings

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

Fig. 2 is a perspective view showing an internal structure of the embodiment of the present utility model.

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

Fig. 4 is a perspective view of an embodiment of the present utility model with the upper cover removed.

Fig. 5 is a perspective view of a battery cell module according to an embodiment of the utility model.

Detailed Description

As shown in fig. 1 to 5, an embodiment of the present utility model is a battery pack of an energy storage machine, including a case 10, two sets of battery cell modules 20, and a conductive copper bar 21 disposed between the two sets of battery cell modules 20, the case 10 includes a case 11, an upper cover 12 disposed on the case 11, and a panel 13 disposed on the case 11, the two sets of battery cell modules 20 are disposed in the case 11, a support plate 111 is disposed in the case 11 above the two sets of battery cell modules 20, a BMS circuit board module 30 electrically connected to the two sets of battery cell modules 20 is disposed on the support plate 111, the BMS circuit board module 30 includes a BMS circuit board 31 disposed on a plurality of support posts 112 of the support plate 111, a heat sink 32 disposed below the corresponding BMS circuit board 31 and disposed on the support plate 111, signal terminals 33 electrically connected to the BMS circuit board 31, a plurality of connectors 34, and an air switch 35 are disposed on the panel 13, and an insulating partition 14 is disposed between the two sets of battery cell modules 20. An insulating baffle 15 is respectively arranged between the two groups of cell modules 20 and the box 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 battery cell module from the box body, so that the insulating performance of the battery pack is improved, an insulating plate is arranged between the upper cover and the battery cell module, the creepage distance between the battery cell module and the upper cover can be increased, and the insulating performance is better. An insulating protection plate 17 is arranged in the box 11 corresponding to the conductive copper bar 21. The creepage distance between the conductive copper bars and the box body can be increased by the insulating protection plate, and the insulating performance of the battery pack can be improved. Two pull rings 18 are symmetrically arranged on one side of the box body 11. The handle is arranged on the box body, so that the battery pack can be conveniently installed and carried.

As shown in fig. 2, 3 and 5, the cell module 20 includes two fixed end plates 201 symmetrically disposed in the case 11, a plurality of cells 202 disposed between the two fixed end plates 201, and steel belt ferrules 203 sleeved on the two fixed end plates 201, limiting grooves 2010 are respectively disposed on the two fixed end plates 201 corresponding to the steel belt ferrules 203, the steel belt ferrules 203 are engaged in the limiting grooves 2010, and the two fixed end plates 201 are engaged with the steel belt ferrules 203. The plurality of battery cells are integrated and modularized through the two fixed end plates, so that the modularized assembly of the battery cell module is facilitated, and the two fixed end plates are fixed through the steel belt ferrule in a clamping manner, so that the assembly of the steel belt ferrule and the fixed end plates is facilitated, and the assembly efficiency of the battery pack is improved. The two fixing end plates 201 are respectively provided with a fixing foot 204, and the fixing feet 204 are provided with screws 205 connected with the box 11. The two fixing plates are arranged in the box body through the fixing pins, so that the modular assembly of the battery cell module and the box body can be realized, and the assembly efficiency is higher.

Adopt the modularized structural design with the BMS circuit board to the assembly of BMS circuit board module and backup pad of being convenient for, the assembly is more convenient, and the BMS circuit board sets up on a plurality of support columns of backup pad, is favorable to the BMS circuit board heat dissipation, and the radiator can improve the heat dispersion of this battery package, thereby is favorable to reducing the temperature rise of this battery package. And two groups of battery cells are separated by an insulating partition board, and the creepage distance of the two groups of battery cells is larger, and the insulating property is better, so that the battery pack of the energy storage machine has the advantages of simple structure, stable and reliable performance, good insulating property and convenience in 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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