Industrial and commercial storage battery module structure

Abstract

The utility model discloses an industrial and commercial storage battery module structure which comprises a fire-fighting module, modules, a box body and a BMU, the two modules are placed in the box body and locked in the box body through long screws, an air duct foam set is pasted to the top of the modules, the BMU and a fan are locked on the back face of a front panel through screws, a fire-fighting connector and an output connector are locked on the front face of the front panel, and the fire-fighting connector and the output connector are connected with the box body. The fire-fighting module is installed in the box body, a wire harness of the fire-fighting connector is inserted into the fire-fighting module, the whole front panel is locked on the box body, sampling wire harnesses of the modules are inserted into the BMU, the positive electrode and the negative electrode of the modules are connected with the output connector through the negative electrode copper bar and the positive electrode copper bar, and then the two modules are connected in series through the lap joint copper bar. Corresponding torsion is applied to the locking screws in the box body; and the handle and the cover plate are fixed on the box body by using screws. The service life of the industrial and commercial storage battery module is prolonged. The series aluminum bars between the battery cells are welded through laser, so that risks such as disconnection of joints in the carrying process are avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of industrial and commercial battery module structure, belong to battery module technical field. BACKGROUND

[0002] In the prior art, lithium battery is usually used as industrial and commercial storage main energy storage unit, generally includes several single batteries, EVA bubble cotton is used between each single battery, and the pole of the battery is connected in series by screwing. This series connection is not convenient for battery module assembly, and when the battery module is transported, the screw is easily loosened due to vibration.

[0003] A large amount of EVA bubble cotton is used in the battery module. EVA can act as insulation and shock absorption in normal applications, but according to the life requirements of the current industrial and commercial storage industry, the physical properties of EVA bubble cotton will gradually degrade, affecting its protective effect.

[0004] The battery and the battery are connected by fasteners. The correct fastener is crucial to the reliability of the stud connection. Over-tight or over-tight connection will reduce reliability. Over-tightness may cause material fatigue, plastic deformation or cracking. Over-looseness may cause the connection to loosen, and in high temperature, humidity or corrosive environment, the connection may be affected, thereby affecting the reliability of the connection. SUMMARY

[0005] The utility model aims to provide an industrial and commercial battery module structure to solve the problems raised in the background art.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0007] An industrial and commercial battery module structure includes a fire module, a lap copper bar, a module, a box, a BMU, two groups of modules are placed in the box and locked in the box by long screws, the air duct bubble cotton is pasted to the top of the module, the BMU and the fan are locked on the back of the front panel by screws, the fire connector and the output connector are locked on the front of the front panel, the fire module is installed inside the box, and the wire harness of the fire connector is plugged into the fire module, the overall front panel is locked on the box, the sampling wire harness of the module is inserted into the BMU, the positive and negative modules are connected to the output connector by negative copper bar and positive copper bar, and the two modules are connected in series by the lap copper bar. The locking screws in the box are all marked with corresponding torque, and the handle and the cover plate are fixed to the box by screws.

[0008] Preferably, the module comprises an electric core, an output pole base, an end plate, an end plate insulating sheet, a mica plate, a steel band, a pole post insulating sheet, a series aluminum row and a module insulating sheet, a plurality of the electric core is arranged in sequence according to positive and negative polarity on a stacking device, a layer of mica plate is pasted between adjacent electric cores, the two sides of the electric core are provided with the end plate, and the end plate insulating column is pasted between the two side end plates and the electric core, the two steel bands are sleeved into the module from the upper and lower directions respectively, and the steel band is in the clamping groove of the end plate, for preventing the steel band from falling off, the pole post insulating sheet is pasted on the module, the aluminum row positioning tool is placed on the module, the series aluminum row and the output pole base are placed into the positioning tool in sequence, and then the series aluminum row is welded, and the module insulating sheet is pasted on the module.

[0009] Preferably, the cover plate, the box body, the handle and the front panel are made of SGCC.

[0010] Preferably, the air duct foam group material is RPP.

[0011] Preferably, the lap copper row, the negative copper row and the positive copper row are made of red copper.

[0012] Preferably, the series aluminum row is made of aluminum 6061.

[0013] Preferably, the electric core is a lithium iron phosphate square aluminum shell electric core.

[0014] Preferably, the end plate insulating sheet, the pole post insulating sheet and the module insulating sheet are made of PC.

[0015] Preferably, the mica plate is composed of a mica sheet and RPP.

[0016] Compared with the prior art, the utility model has the advantages that the RPP material is used for the foam, the RPP material has many properties of EVA foam, has longer durability and further improves the service life of the industrial and commercial storage battery module. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is the battery module assembly schematic diagram of the utility model;

[0018] Figure 2 The utility model module stacking schematic diagram;

[0019] In the diagram: 1. Cover plate; 2. Fire protection module; 3. Copper busbar; 4. Module; 5. Housing; 6. Air duct foam assembly; 7. Handle; 8. BMU; 9. Fan; 10. Front panel; 11. Fire protection connector; 12. Output connector; 13. Negative copper busbar; 14. Positive copper busbar; 15. Battery cell; 16. Output terminal; 17. End plate; 18. End plate insulating sheet; 19. Mica board; 20. Steel strip; 21. Terminal post insulating sheet; 22. Series aluminum busbar; 23. Module insulating sheet. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0021] Module stacking as Figure 2 As shown, several battery cells 15 are arranged sequentially on a stacking device according to their positive and negative polarities, with a mica plate 19 pasted between adjacent battery cells 15. Insulating posts 18 need to be pasted between the end plates 17 on both sides of the module 4 and the battery cells 15. Based on the extrusion parameters provided by the battery cell manufacturer, the stacking device parameters are adjusted for extrusion. Two steel strips 20 are inserted into the module from both top and bottom directions. The steel strips 20 need to be moved into the slots of the end plates 17 to prevent them from falling off. Insulating sheets 21 are pasted onto the module. After placing the aluminum busbar positioning fixture on the module, the series aluminum busbar 22 and the output terminal 16 are placed into the positioning fixture in sequence. The entire assembly is then transferred to a laser welding device to weld the series aluminum busbar 22. Voltage and temperature acquisition lines are then welded using a handheld laser welding device. Cable ties are used to organize the internal wiring of the module. Finally, insulating sheets 23 are pasted onto the module.

[0022] Battery module assembly such as Figure 1 As shown, place the two modules 4 into the housing 5 and secure them to the housing 5 with long screws. Simultaneously, attach the air duct foam assembly 6 to the top of the modules according to the design requirements. Secure the BMU 8 and fan 9 to the back of the front panel 10 with screws, and then secure the fire connector 11 and output connector 12 to the front of the front panel 10. Install the fire module 2 inside the housing 5 and connect the fire connector 11 wiring harness to the fire module 2. Secure the entire front panel 10 to the housing 5. Insert the module sampling wiring harness into the BMU 8, and connect the positive and negative terminals of module 4 to the output connector 12 via the negative copper busbar 13 and positive copper busbar 14. Connect the two modules in series via the overlapping copper busbar 03. Set the screws inside the housing to the corresponding torque. Finally, secure the handle 7 and cover plate 1 to the housing 5 with screws.

[0023] The cover plate 1, the box body 5, the handle 7 and the front panel 10 are made of SGCC, which protects the battery unit and other components from the external environment, improves the heat dissipation performance of the battery, and maintains the stability and safety of the battery pack. The air duct foam group 6 is made of RPP, which is heat-insulating, buffering, flame-retardant, sealing, supporting and shock-absorbing. The lap joint copper bar 3, the negative copper bar 13 and the positive copper bar 14 are made of red copper, which has excellent electrical conductivity and high current-carrying capacity, as well as good corrosion resistance and oxidation resistance. The series aluminum bar 22 is made of aluminum 6061, which mainly includes current conduction, stability and reliability, heat dissipation and heat balance, and safety. The BMU 8 is the core component of the battery management system (BMS), which is responsible for real-time monitoring, control and protection of the battery pack, and ensures efficient, safe and reliable operation of the battery system. The fire-fighting module 2 and the fire-fighting connector 11 mainly ensure the safe operation of the battery, prevent the occurrence of fire and other safety accidents. The fire-fighting module 2 and the fire-fighting connector 11 mainly ensure the safe operation of the battery, prevent the occurrence of fire and other safety accidents. The output connector 12 is one of the key components for converting the electrical energy output by the battery into mechanical energy. The cell 13 is a square aluminum shell lithium iron phosphate cell, which stores and releases electrical energy, and the quality of the cell directly determines the performance of the battery, including the endurance, safety and overall performance. The end plate insulating sheet 18, the pole insulating sheet 21 and the module insulating sheet 23 are made of PC, which has the characteristics of fireproof, flame-retardant, insulating and high-temperature-resistant, and plays the role of insulating protection and short circuit prevention, ensuring that the circuit remains in an open state. The mica plate 19 is composed of mica sheet + RPP, which insulates the heat transfer between the cells, and the RPP foam in it absorbs the cell expansion space.

[0024] The above is the preferred embodiment of the present application. For ordinary skilled persons in the art, according to the teaching of the present application, the changes, modifications, replacements and variations of the embodiments without departing from the principles and spirits of the present application still fall within the protection scope of the present application.

Claims

1. A structure for an industrial and commercial battery storage module, characterized in that, The system includes a fire suppression module, connecting copper busbars, modules, a housing, and a BMU. Two sets of the modules are placed inside the housing and secured with long screws. Air duct foam is attached to the top of the modules. The BMU and fan are screwed to the back of the front panel. The fire suppression connector and output connector are secured to the front of the front panel. The fire suppression module is installed inside the housing, and the wiring harness of the fire suppression connector is plugged into the fire suppression module. The entire front panel is secured to the housing. The sampling wiring harness of the module is inserted into the BMU. The positive and negative terminals of the module are connected to the output connector via negative and positive copper busbars. The two modules are then connected in series via connecting copper busbars. All screws inside the housing are tightened to the corresponding torque. The handle and cover are fixed to the housing with screws.

2. The structure of an industrial / commercial battery storage module as described in claim 1, characterized in that, The module includes a battery cell, an output terminal, an end plate, an end plate insulating sheet, a mica plate, steel strips, terminal insulating sheets, series aluminum busbars, and a module insulating sheet. Several battery cells are arranged sequentially on a stacking device according to positive and negative polarities. A layer of mica plate is pasted between adjacent battery cells. End plates are provided on both sides of the battery cell, and end plate insulating posts are pasted between the end plates and the battery cells. Two steel strips are respectively inserted into the module from the top and bottom, and the steel strips are in the slots of the end plates to prevent the steel strips from falling off. Terminal insulating sheets are pasted on the module. After the aluminum busbar positioning fixture is placed on the module, the series aluminum busbars and the output terminal are placed in the positioning fixture in sequence, and the series aluminum busbars are welded. The module insulating sheet is pasted onto the module.

3. The structure of an industrial / commercial battery module as described in claim 2, characterized in that, The cover, box body, handle and front panel are made of SGCC.

4. The structure of an industrial / commercial battery storage module as described in claim 2, characterized in that, The material of the air duct foam assembly is RPP.

5. The structure of an industrial / commercial battery storage module as described in claim 2, characterized in that, The copper busbars, negative copper busbars, and positive copper busbars mentioned are made of copper.

6. The structure of an industrial / commercial battery storage module as described in claim 2, characterized in that, The series aluminum busbar is made of aluminum 6061.

7. The structure of an industrial / commercial battery storage module as described in claim 2, characterized in that, The battery cell is a lithium iron phosphate square aluminum-cased battery cell.

8. The structure of an industrial / commercial battery storage module as described in claim 2, characterized in that, The end plate insulating sheet, pole insulating sheet and module insulating sheet are made of PC.

9. The structure of an industrial / commercial battery storage module as described in claim 2, characterized in that, The mica plate is composed of mica sheets and RPP.

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