CN220021434U

CN220021434U - Battery plug box and battery pack

Info

Publication number: CN220021434U
Application number: CN202321593416.XU
Authority: CN
Inventors: 王刚; 刘智亮; 蒙玉宝; 陈翔
Original assignee: Wuhan Eve Energy Storage Co ltd
Current assignee: Wuhan Eve Energy Storage Co ltd
Priority date: 2023-06-20
Filing date: 2023-06-20
Publication date: 2023-11-14
Anticipated expiration: 2033-06-20

Abstract

The utility model provides a battery plug box, which comprises a bottom plate and a box cover, wherein the bottom plate and the box cover form a battery chamber for installing a plurality of battery modules, two sides of each battery module are respectively provided with a pair of gas injection plates and gas exhaust plates, all the gas injection plates are connected through a vent pipe to form a gas injection plate assembly, and all the gas exhaust plates are connected through another vent pipe to form a gas exhaust plate assembly. The insulation gas is introduced into the battery plug box provided by the utility model, so that fire control in the plug box is realized, the fire control reaction speed is improved, and the influence of fire control response on an energy storage system is reduced to the plug box level; meanwhile, the insulating gas in the battery plug box circulates and is cooled in the matched external cooling device, so that the internal heat dissipation of the battery plug box is realized, and the battery module is kept to work in a proper temperature environment. The utility model further provides a battery pack, which comprises the battery plug box.

Description

Battery plug box and battery pack

Technical Field

The utility model relates to the field of energy storage batteries, in particular to a battery plug box and a battery pack.

Background

In the energy storage system, the battery plug box is a basic energy storage unit and is also an important unit for the fire safety of the whole system. At present, a plurality of fire-fighting spray heads are generally arranged on an inserting box or a container in an energy storage system, when the system detects that abnormal gas is generated by an electric core in the inserting box, the temperature is out of control and even a fire disaster occurs, the fire-fighting spray heads spray perfluorinated hexanone or heptafluoropropane, the problems of slow fire-fighting detection and slow reaction exist, and once the action of the fire-fighting spray heads influences the normal use of other inserting boxes and even the whole container system.

Disclosure of Invention

In order to solve the defects in the prior art, the utility model provides a battery plug box and a battery pack, wherein insulating fire-fighting gas is injected into the battery plug box, so that a battery module in the battery plug box works in a fire-fighting environment, and meanwhile, the insulating fire-fighting gas in the plug box is discharged and forms circulation with an external matched cooling system.

The battery plug box comprises a bottom plate and a box cover, wherein the bottom plate and the box cover form a battery chamber for installing a plurality of battery modules, two sides of each battery module are respectively provided with an air injection plate and an air exhaust plate, one surface of each air injection plate and one surface of each air exhaust plate, which faces the corresponding battery module, are provided with air holes, all the air injection plates are communicated through a first ventilation pipe to form an air injection plate assembly, and all the air exhaust plates are communicated through a second ventilation pipe to form an air exhaust plate assembly.

Preferably, a first hollow interlayer is arranged inside the gas injection plate, a first vent hole communicated with the first hollow interlayer is formed in the upper portion of the first side wall of the gas injection plate, and the first vent hole is communicated with a first vent pipe so as to inject gas in the first vent pipe into the first hollow interlayer.

Preferably, a second hollow interlayer is arranged in the exhaust plate, a second vent hole communicated with the second hollow interlayer is formed in the lower portion of the second side wall of the exhaust plate, and the second vent hole is communicated with the second vent pipe so as to exhaust gas in the second hollow interlayer into the second vent pipe.

Preferably, the air holes are uniformly formed in the air injection plate and the exhaust plate, and air guide nozzles are arranged at the air holes.

Preferably, the case cover is provided with an air injection port and an air exhaust port, which are respectively connected with the first ventilation pipe and the second ventilation pipe.

Preferably, a positioning groove for fixing the gas injection plate and the exhaust plate is formed in the bottom plate.

Preferably, a pressure release valve is arranged on the box cover, and the box cover is opened and discharges gas when the air pressure in the battery plug box is too high.

Preferably, the case cover is further provided with an air pressure detector and an air analyzer, which respectively monitor the air pressure and the air composition in the battery plug-in box in real time.

Preferably, the cover is further provided with a panel assembly, and the panel assembly comprises a communication interface, a total positive electrical connector, a total negative electrical connector and the like.

The utility model also provides a battery pack, and the battery comprises the battery plug box.

In the battery plug box provided by the utility model, the two sides of the battery module are respectively provided with the gas injection plate and the gas exhaust plate, one surface of the gas injection plate and the gas exhaust plate, which faces the corresponding battery module, are provided with the gas holes, all the gas injection plates are communicated through the first vent pipe to form a gas injection plate assembly, and all the gas exhaust plates are communicated through the second vent pipe to form a gas exhaust plate assembly. The insulation gas can enter each gas injection plate through the first vent pipe, is injected into the battery cavity through the gas holes on the gas injection plate, enters the gas exhaust plate through the gas holes on the corresponding gas exhaust plate, and is discharged out of the battery cavity through the second vent pipe, so that the battery module is kept to work in the insulation gas environment, fire protection in the plug box is realized, the fire protection reaction speed is improved, and the influence of fire protection response on the energy storage system is reduced to the level of the plug box; meanwhile, insulating gas in the plug box can be cooled in a matched external cooling device after being discharged through an exhaust plate assembly formed by the exhaust plate and the second vent pipe, and further circulates through an air injection plate assembly formed by the air injection plate and the first vent pipe, so that internal heat dissipation of the battery plug box is realized, and the battery module is kept to work in a proper temperature environment.

Drawings

Fig. 1 is a front view of a battery receptacle provided by the present utility model;

fig. 2 is a front view of the internal structure of the battery receptacle provided by the present utility model;

fig. 3 is a top view of the internal structure of the battery receptacle provided by the present utility model;

FIG. 4 is a schematic diagram illustrating the installation of a gas injection plate assembly and a gas exhaust plate assembly according to the present utility model;

FIG. 5 is a right side view of the gas injection plate assembly provided by the present utility model;

FIG. 6 is an enlarged partial cross-sectional view of A-A of FIG. 5;

FIG. 7 is an enlarged partial cross-sectional view of B-B of FIG. 5;

FIG. 8 is a right side view of an exhaust plate assembly provided by the present utility model;

FIG. 9 is an enlarged partial cross-sectional view of C-C of FIG. 8;

fig. 10 is a schematic structural diagram of a base plate according to the present utility model.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. It will be apparent that the described embodiments are some, but not all, embodiments of the utility model. All other embodiments, which can be made by a person skilled in the art without creative efforts, based on the described embodiments of the present utility model fall within the protection scope of the present utility model.

Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this utility model belongs. The terms "first," "second," and the like, as used herein, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. Words such as "upper", "lower", "front", "rear", and the like merely denote relative positional relationships, and when the absolute position of the object to be described is changed, the relative positional relationship is changed accordingly.

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

The utility model provides a battery plug-in box, which is shown in figures 1, 2 and 3 and comprises a bottom plate 1 and a box cover 2, wherein the bottom plate 1 is a rectangular steel plate, and the box cover 2 is provided with a cuboid accommodating space. The case cover 2 is fastened to the bottom plate 1 to form a battery chamber 3 for accommodating the battery module. The battery chamber 3 has good air tightness, so that the insulating gas in the case cover 2 is prevented from leaking, and good circulation of the insulating gas is maintained.

In this embodiment, four groups of battery modules are disposed in the battery chamber 3, and an air injection plate 4 and an air exhaust plate 5 are vertically disposed at two sides of each battery module, wherein the left side of the battery module is the air injection plate 4, and the right side of the battery module is the air exhaust plate 5. The gas injection plate 4 and the gas exhaust plate 5 are provided with gas holes 7 on the surface facing the corresponding battery module, as shown in fig. 6. In other embodiments of the battery box of the present utility model, the number of battery modules disposed in the battery chamber 3 is not limited to four groups, and may be configured according to actual requirements.

In this embodiment, as shown in fig. 4, four gas injection plates 4 are communicated through a first vent pipe 8 to form a gas injection plate assembly 41, four gas discharge plates 5 are communicated through a second vent pipe 9 to form a gas discharge plate assembly 51, and the gas injection plate assembly 41 and the gas discharge plate assembly 51 are assembled and placed in the battery chamber 3 according to the position shown in fig. 4 and the direction shown by the arrow in the drawing, as shown in fig. 2 and 3. The first ventilation pipe 8 and the second ventilation pipe 9 are respectively provided with a first connection nozzle 81 and a second connection nozzle 91. As shown in fig. 1 and 2, the front end of the case cover 2 is provided with a gas injection port 40 and a gas exhaust port 50, which communicate with the first connection nozzle 81 and the second connection nozzle 91, respectively, on the inside of the case, and communicate with an external insulating gas cooling circuit on the outside of the case. The gas injection port 40 and the gas exhaust port 50 are provided with quick-connection plugs at one side outside the plug box, so that connection and disconnection with an external insulating gas circuit are facilitated when the battery plug box is disassembled and assembled.

As shown in fig. 5 and 8, the gas injection plate 4 and the gas exhaust plate 5 are rectangular thin plates, and the length and width dimensions are equivalent to the length and height dimensions of the battery chamber. As shown in fig. 6 and 7, the gas injection plate 4 has a first hollow interlayer 44 therein, a first vent hole 43 communicating with the first hollow interlayer 44 is provided at an upper portion of the first side wall 42 of the gas injection plate 4, and the first vent hole 43 communicates with the first vent pipe 8 to inject the gas in the first vent pipe 8 into the first hollow interlayer 44 and into the battery chamber 3 through the gas hole 7 on the gas injection plate 4. As shown in fig. 9, a second hollow interlayer 54 is disposed inside the exhaust plate 5, a second vent hole 53 communicating with the second hollow interlayer 54 is disposed at a lower portion of the second side wall 52 of the exhaust plate 5, the second vent hole 53 communicates with the second vent pipe 9, and gas in the battery chamber 3 enters the second hollow interlayer 54 through the vent hole 7 on the exhaust plate 5 and is discharged into the second vent pipe 9. The first ventilation pipe 8 and the second ventilation pipe 9 are respectively communicated with the first ventilation hole 43 and the second ventilation hole 53 on the corresponding gas injection plate 4 and the corresponding gas exhaust plate 5, and can be in a welding mode or in other modes capable of realizing gas passage communication and keeping gas tightness.

The first vent pipe 8 is externally communicated with the gas injection port 40 on the case cover 2 through the connecting nozzle 81, and internally communicated with all the gas injection plates 4 through the first vent holes 43, so that on one hand, unification of connection interfaces of the battery plug box and external matched gas pipelines is realized, and on the other hand, simplification of connection structures and layout between the gas injection plates 4 in the battery plug box is realized. The function of the second ventilation pipe 9 is similar to the above-mentioned function of the first ventilation pipe 8, and will not be described again.

In this embodiment, the first ventilation pipe 8 is disposed at an upper portion of the first side wall 42, and the second ventilation pipe 9 is disposed at a lower portion of the second side wall 52, so as to avoid interference between the first ventilation pipe 8 and the second ventilation pipe 9. In other embodiments of the utility model, the first ventilation pipe 8 and the second ventilation pipe 9 may be provided on different sides.

Preferably, the air holes 7 on the air injection plate 4 and the air exhaust plate 5 are uniformly distributed, so that the insulating gas is uniformly introduced into and discharged from the plug box, the circulation of the insulating gas is enhanced, and the fire-fighting efficiency is improved.

Preferably, air guide nozzles 70 are disposed at the air holes 7 on the air injection plate 4 and the air exhaust plate 5, and the air guide nozzles 70 are in a horizontal hollow cylinder shape, as shown in fig. 6, 7 and 9, so as to guide the insulating air to form an orderly and stable air flow between the corresponding air injection plate 4 and the air exhaust plate 5. In other embodiments of the present utility model, other shapes of the nozzle 70 may be used to facilitate gas flow.

As shown in fig. 10, a plurality of fixing holes 12 are provided at the outer edge of the base plate 1 for bolting with the case cover 2. Five positioning grooves 11 are further formed in the bottom plate 1, the width of each positioning groove 11 on two sides is the width of a single gas injection plate 4 or the width of a single gas exhaust plate 5, and the width of each positioning groove 11 in the middle is the sum of the thicknesses of one gas injection plate 4 and one gas exhaust plate 5. The gas injection plate 4 and the gas exhaust plate 5 are inserted into the positioning groove 11, so that a stable vertical state can be maintained.

As shown in fig. 1, the battery box in the present embodiment is further provided with a pressure release valve 21 at the front end of the box cover 2. When the air pressure in the plug box is normal, the pressure release valve 21 is in a closed state, so that the air tightness in the plug box is kept; when the air pressure in the plug box is too high, the pressure release valve 21 is opened to release the air in the plug box to reduce the air pressure in the plug box, so that the plug box is prevented from being damaged or other safety accidents caused by the rapid increase of the pressure in the plug box.

Alternatively, the battery box may be provided with a gas pressure detector 22 and a gas analyzer 23. The air pressure detector 22 monitors the air pressure in the plug box in real time, and when the air pressure changes, signals are transmitted to a related matched battery management and control system. The gas analyzer 23 analyzes the gas components in the plug box in real time, transmits signals to a related matched battery management and control system, and judges whether the quality problem of the power core occurs according to analysis data.

The battery box in this embodiment is further provided with a panel assembly 24 at the front end of the box cover 2, where the panel assembly 24 includes various electrical connectors, such as a battery output anode, a battery output cathode, a communication interface, and the like.

The utility model also provides a battery pack which comprises the battery plug box, so that the battery pack also has the beneficial effects of quick fire-fighting response, small influence on a system, high cooling efficiency and the like.

The foregoing example only shows one embodiment of the utility model, which is described in more detail and is not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of the utility model should be assessed as that of the appended claims.

Claims

1. The utility model provides a battery subrack, includes bottom plate (1) and case lid (2), bottom plate (1) with case lid (2) constitute battery cavity (3) of a plurality of battery module of installation, its characterized in that, every battery module both sides are provided with gas injection plate (4) and exhaust plate (5) respectively, gas injection plate (4) are provided with gas pocket (7) in the one side of the battery module that corresponds towards it with exhaust plate (5), all gas injection plate (4) are through first breather pipe (8) intercommunication formation gas injection plate subassembly (41), all exhaust plate (5) are through second breather pipe (9) intercommunication formation exhaust plate subassembly (51).

2. The battery plug box according to claim 1, wherein a first hollow interlayer (44) is arranged inside the gas injection plate (4), a first vent hole (43) communicated with the first hollow interlayer (44) is arranged at the upper part of a first side wall (42) of the gas injection plate (4), and the first vent hole (43) is communicated with a first vent pipe (8).

3. The battery plug-in box according to claim 1, wherein a second hollow interlayer (54) is arranged inside the exhaust plate (5), a second vent hole (53) communicated with the second hollow interlayer (54) is arranged at the lower part of a second side wall (52) of the exhaust plate (5), and the second vent hole (53) is communicated with the second vent pipe (9).

4. The battery plug-in box according to claim 1, wherein a plurality of air holes (7) are uniformly distributed on the air injection plate (4) and the air exhaust plate (5), and air guide nozzles (70) are arranged at the air holes (7).

5. The battery plug box according to claim 1, wherein an air injection port (40) and an air exhaust port (50) are arranged on the box cover (2), the air injection port (40) is connected with the first ventilation pipe (8), and the air exhaust port (50) is connected with the second ventilation pipe (9).

6. Battery compartment according to any of claims 1-5, characterized in that the base plate (1) is provided with positioning slots (11) for fixing the gas injection plate (4) and the gas discharge plate (5).

7. The battery box according to claim 1, characterized in that the cover (2) is provided with a pressure release valve (21) which opens and vents gas when the gas pressure in the battery box is too high.

8. Battery compartment according to claim 1, characterized in that the cover (2) is provided with a gas pressure detector (22) and a gas analyzer (23) for monitoring the gas pressure and the gas composition in the battery compartment in real time, respectively.

9. Battery compartment according to claim 1, characterized in that the cover (2) is provided with a panel assembly (24), the panel assembly (24) comprising a communication interface and total positive and total negative electrical connectors.

10. A battery pack, wherein the battery comprises the battery compartment of any one of claims 1-9.