CN215578735U

CN215578735U - Battery box for storing energy of sodium ion battery

Info

Publication number: CN215578735U
Application number: CN202122364871.XU
Authority: CN
Inventors: 李楠; 延春明; 张彦生; 许佳庆; 王明菊; 赵广; 康利斌; 唐堃
Original assignee: Huayang New Material Technology Group Co ltd; Beijing Zhongke Haina Technology Co ltd
Current assignee: Huayang New Material Technology Group Co ltd; Beijing Zhongke Haina Technology Co ltd
Priority date: 2021-09-28
Filing date: 2021-09-28
Publication date: 2022-01-18
Anticipated expiration: 2031-09-28

Abstract

The utility model discloses a battery box for storing energy of a sodium ion battery, which belongs to the technical field of sodium ion batteries and comprises: the upper box cover, the lower shell, the front air guide plate and the rear air guide plate; the front air guide plate is installed on the inner side of the front end of the lower shell, the rear air guide plate is installed on the inner side of the rear end of the lower shell, the front air guide plate is provided with a front air guide groove, the rear air guide plate is provided with a rear air guide groove, the front air guide groove corresponds to the rear air guide groove in a front-rear mode, and the upper box cover is installed on the lower shell. The utility model provides an energy storage battery box which is rapid to install and maintain and can balance the internal temperature of the battery box.

Description

Battery box for storing energy of sodium ion battery

Technical Field

The utility model relates to the technical field of sodium ion batteries, in particular to a battery box for storing energy of a sodium ion battery.

Background

At present, "carbon neutralization and carbon peak reaching" becomes a world trend, and photovoltaics, wind power and energy storage enter a new high-speed development period. However, the power generation by renewable energy sources such as solar energy, wind energy and the like has the characteristics of discontinuity, instability and uncontrollable. In order to solve the safety and stability impact caused by large-scale integration of the electrochemical energy storage system into a power grid, the electrochemical energy storage system with the characteristics of high response speed, high conversion efficiency, flexible configuration mode and the like is vigorously developed, and the electrochemical energy storage system is an important support technology for improving the photovoltaic utilization efficiency and ensuring the safe operation of the power grid.

The electrochemical energy storage system consists of an energy management system, a power supply conversion device, a battery system and a fire fighting and extinguishing system. The battery system is composed of a battery management system and an energy storage battery box.

The energy storage battery box is used as a carrier of the battery and the battery management unit and is a key factor of electrochemical energy storage, and the sodium ion battery has the characteristics of long cycle life, low cost, high safety and good low-temperature performance and is one of the preferred batteries of large-scale electrochemical energy storage systems.

The problem that energy storage battery case exists at present:

1. the battery box adopts a natural cooling or air cooling heat dissipation mode to dissipate heat, so that the heat dissipation is uneven, the local temperature in the box is overhigh, and the consistency of the battery is influenced;

2. when the battery box forms a battery cluster, the phenomena of inaccurate positioning and complex installation and maintenance operations exist, and the daily inspection and maintenance are inconvenient.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention provides an energy storage battery box capable of being quickly installed and maintained and simultaneously balancing the internal temperature of the battery box.

In order to achieve the purpose, the utility model adopts the following technical scheme:

battery box for energy storage of sodium ion battery, comprising: the upper box cover, the lower shell, the front air guide plate and the rear air guide plate; the front air guide plate is installed on the inner side of the front end of the lower shell, the rear air guide plate is installed on the inner side of the rear end of the lower shell, the front air guide plate is provided with a front air guide groove, the rear air guide plate is provided with a rear air guide groove, the front air guide groove corresponds to the rear air guide groove in a front-rear mode, and the upper box cover is installed on the lower shell.

Further, the lower housing comprises a front end plate, a bottom plate and a rear end plate; the front end plate is installed at the front end of the bottom plate, and the rear end plate is installed at the rear end of the bottom plate.

Further, the rear end plate is provided with a vent hole.

Further, the rear end plate also comprises guide posts, and the guide posts are installed at two ends of the lower side of the rear end plate.

Further, the battery box for storing the energy of the sodium-ion battery further comprises a fan, a BMU battery management unit, a connector and a front panel, wherein the fan, the BMU battery management unit, the connector and the front panel are installed on the front end plate, the fan and the BMU battery management unit are covered by the front panel, and the fan and the connector are electrically connected with the BMU battery management unit.

Further, the front panel is provided with hexagonal vent holes arranged in a honeycomb manner.

Furthermore, the front panel both sides are provided with L type trip, and the downside is provided with two spiro union holes, be provided with draw-in groove and spiro union post on the front end plate.

Further, battery box for sodium ion battery energy storage still includes fixed ear, fixed ear is installed the both sides of front end plate.

Further, the lower shell further comprises a module fixing band, and the module fixing band is installed on the bottom plate.

The utility model has the beneficial effects that:

1. through dismantling the front panel, need not whole dismantlement battery box and can accomplish the installation of components and parts such as fan, BMU battery management unit, the inspection of the voltage of single cluster battery, electric current realizes quick inspection and the maintenance of battery.

2. Lower casing C type structure, it does not have the arch to go up the case lid installation rear surface, and the outward appearance is pleasing to the eye, and uncovered design is convenient for the installation and the change of module.

3. The lower side of the rear end plate of the lower shell is provided with a guide post limiting structure, so that the battery rack can be conveniently installed and positioned.

4. Two heat dissipation modes are adopted, cold air can enter from the front panel and flows out of the battery box from the rear air guide groove; or the rear air guide groove of the battery box enters the battery gap and then passes through the front air guide plate. The temperature difference in the battery box is reduced, the stability of the battery performance is facilitated, and the occurrence of thermal runaway is reduced.

5. The fixed ear integral type design has integrateed the box and has fixed and carry the handle function, has improved space utilization, reduce cost.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an energy storage battery box according to an embodiment of the utility model.

Fig. 2 is a schematic structural diagram of the energy storage battery box according to the embodiment of the utility model, with the upper cover removed.

Fig. 3 is a schematic structural diagram of a lower shell of an energy storage battery box according to an embodiment of the utility model.

FIG. 4 is a schematic view of a fixing lug structure of an energy storage battery box according to an embodiment of the utility model

Fig. 5 is a schematic structural diagram of a front wind deflector of the energy storage battery box according to the embodiment of the utility model.

Fig. 6 is a schematic structural view of a rear air guide groove of an energy storage battery box according to an embodiment of the utility model.

Fig. 7 is a schematic diagram of the connection between the energy storage battery box and the battery rack connecting plate according to the embodiment of the utility model.

Fig. 8 is a schematic view illustrating the connection between the energy storage battery box and the rear air duct according to the embodiment of the utility model.

Wherein, in the figure:

1-front panel, 2-connector, 3-front end plate, 4-fixing lug, 5-upper box cover, 6-front air deflector, 7-blower, 8-BMU battery management unit, 9-battery module, 10-module fixing band, 11-rear air deflector, 12-bottom plate, 13-rear end plate, 14-guide column, 15-battery rack, 16-rear air duct, 17-tenon, 18-clamping groove and 19-screw column.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-7, the utility model provides a battery box for storing energy of a sodium ion battery, which comprises an upper box cover 5, a lower shell, a front air deflector 6 and a rear air deflector 11; the front air guide plate 6 is installed on the inner side of the front end of the lower shell, the rear air guide plate 11 is installed on the inner side of the rear end of the lower shell, the front air guide plate 6 is provided with a front air guide groove, the rear air guide plate 11 is provided with a rear air guide groove, the front air guide groove corresponds to the rear air guide groove in a front-rear mode, and the upper box cover 5 is installed on the lower shell. The front and rear air deflectors 11 are provided with air guide grooves with different gaps according to the distribution of the battery gaps so that cold air can uniformly pass through each battery. And cold air passes through the front air guide groove of the unequal gap structure and then passes through an air channel formed by the gap between the modules and the rear air guide groove to finish air cooling and heat dissipation. The casing is C type flanging structure down, goes up case lid 5 and also is type structure, and lower casing forms interlock connection structure with lower casing body, goes up 5 installation rear surfaces of case lid and does not have the arch, and the outward appearance is pleasing to the eye, and the installation and the change of the module of being convenient for of the uncovered design of casing down.

The lower shell comprises a front end plate 3, a bottom plate 12 and a rear end plate 13; the front end plate 3 is arranged at the front end of the bottom plate 12, the rear end plate 13 is arranged at the rear end of the bottom plate 12, and the rear end plate 13 is provided with a ventilation hole, so that ventilation and heat dissipation are facilitated; the rear end plate 13 further comprises guide posts 14, the guide posts 14 are mounted at two ends of the lower side of the rear end plate 13, and the guide posts 14 and the limiting rings on the battery rack 15 form a limiting device.

The battery box for storing the energy of the sodium-ion battery further comprises a fan 7, a BMU battery management unit 8, a connector 2 and a front panel 1, wherein the fan 7, the BMU battery management unit 8, the connector 2 and the front panel 1 are installed on the front end plate 3, the front panel 1 covers the fan 7 and the BMU battery management unit 8, and the fan 7 and the connector 2 are electrically connected with the BMU battery management unit 8. The BMU battery management unit 8 monitors and maintains the battery module 9 in real time, and the fan 7 provides cold air for the battery box, so that the cold air smoothly passes through an air channel formed by the front air deflector 6, the rear air deflector 11 and the battery gap to dissipate heat of the battery; the right side of the front end plate 3 is provided with two connectors 2, the left side of the front end plate can also be provided with the connectors 2 according to the requirements, and the connectors 2 realize the electric connection of the battery module 9 and external electrical equipment; the front panel 1 is a metal sheet or plastic injection molding part, hexagonal heat dissipation holes are distributed according to the fan 7, and the fan 7, the BMU battery management unit 8 and other components can be mounted and the voltage and current of a single-string battery can be checked by dismounting the front panel 1 without integrally dismounting a battery box, so that the quick check and maintenance of the battery are realized; 1 both sides of front panel are provided with L type trip 17, and the downside is provided with two spiro union holes, is provided with draw-in groove 18 and spiro union post 19 on the front end plate 3, and quick installation and location are realized with 3 draw-in grooves 18 of front end plate to L type trip 17, and two 2 screws carry out the secondary locking.

The battery box for storing the energy of the sodium-ion battery also comprises fixing lugs 4, the fixing lugs 4 are arranged on two sides of the front end plate 3, the battery box can be screwed on the battery frame 15 through the fixing lugs 4, the fixing lugs 4 can also be used as handles in the process of carrying the battery box, and the functions of fixing and carrying the handles of the battery box are integrated; fixed ear 4 is metal sheet or stamping forming spare, and its and the equal spraying of area of casing contact down are conductive coating, optimize the structure, have reduced the design of equipotential ground post.

The lower case further includes a module fixing band 10, the module fixing band 10 is installed on the bottom plate 12, and the battery is fixed on the bottom plate 12 by the module fixing band 10.

Example one

Air conditioner cold air enters from the front panel 1, the front air guide plate 6 and the lower shell front panel 1 form an air collecting cavity, and the cold air is introduced into a battery gap through unequal section holes of the front air guide groove on the front air guide plate 6 by the fan 7 and then flows out of the battery box through the rear air guide groove on the rear air guide plate 11.

Example two

Air conditioner cold air enters the battery gap from the rear air guide groove of the battery box, and then the indoor hot air is taken out of the battery box under the supplementary suction force of the fan 7 through the battery gap and the front air guide plate 6. The rear air duct 16 adopts a design with adjustable wind power, can uniformly apply pressure to each battery box with air-conditioning cold air, and then accelerates to finish air-cooling heat dissipation under the air draft effect of the fan 7, thereby greatly reducing the temperature difference inside the battery boxes, prolonging the service life of the battery and reducing the thermal runaway risk of the battery.

EXAMPLE III

The battery box is carried to the corresponding groove of battery frame 15 in the fixed ear 4 of two handheld, when pushing the battery box into battery frame 15, notices and aims at the spacing ring of battery frame 15 with guide post 14, then with 4 opening positions of the fixed ear 4 of screw on battery box both sides with battery box fixed mounting on battery frame 15.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. Battery box for sodium ion battery energy storage, its characterized in that includes: the upper box cover, the lower shell, the front air guide plate and the rear air guide plate; the front air guide plate is installed on the inner side of the front end of the lower shell, the rear air guide plate is installed on the inner side of the rear end of the lower shell, the front air guide plate is provided with a front air guide groove, the rear air guide plate is provided with a rear air guide groove, the front air guide groove corresponds to the rear air guide groove in a front-rear mode, and the upper box cover is installed on the lower shell.

2. The battery box for storing energy of sodium ion batteries according to claim 1, characterized in that said lower case comprises a front end plate, a bottom plate and a rear end plate; the front end plate is installed at the front end of the bottom plate, and the rear end plate is installed at the rear end of the bottom plate.

3. The battery box for storing energy of sodium-ion batteries according to claim 2, characterized in that the rear end plate is provided with a vent hole.

4. The battery box for storing energy of sodium-ion batteries according to claim 2, characterized in that said rear end plate further comprises guide posts, said guide posts being mounted at both ends of the lower side of said rear end plate.

5. The battery box of claim 2, further comprising a blower, a BMU battery management unit, a connector, and a front panel, wherein the blower, the BMU battery management unit, the connector, and the front panel are mounted on the front panel, the front panel houses the blower and the BMU battery management unit, and the blower and the connector are electrically connected to the BMU battery management unit.

6. The battery box for sodium ion battery energy storage according to claim 5, characterized in that the front panel is provided with hexagonal ventilation holes arranged in a honeycomb manner.

7. The battery box for storing energy of sodium-ion batteries according to claim 5, characterized in that the front panel is provided with L-shaped tenons at both sides and two screw holes at the lower side, and the front end plate is provided with a clamping groove and a screw column.

8. The battery box for storing energy of sodium-ion batteries according to claim 2, characterized in that, the battery box for storing energy of sodium-ion batteries further comprises fixing lugs, and the fixing lugs are arranged on two sides of the front end plate.

9. The battery box of claim 2, wherein the lower housing further comprises a module securing strap mounted on the bottom plate.